A pipe breaking method improves the drill bit

Abstract

The application relates to the field of building construction and discloses an improved drill bit for the broken pipe method, which comprises a fixed pipe, a connecting pipe arranged on one side of the fixed pipe, an ejection unit arranged on the side, away from the fixed pipe, of the connecting pipe and used for ejecting the whole drill bit forward, a crushing unit arranged between the fixed pipe and the ejection unit and used for crushing the gravel impurities at the pipe collapse position, and a power unit arranged in the fixed pipe and connected with the crushing unit and used for driving the crushing unit to rotate. The ejection unit comprises a connecting head arranged on the side, away from the fixed pipe, of the connecting pipe. The application can effectively solve the problem that the ejection force of the ejection unit is increased due to the pipe collapse or partial collapse during the pipe repair process of the broken pipe method, then the crushing unit is used for crushing the collapse position, and the problem that the drill bit is stuck in the pipe is reduced.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to an improved drill bit for the pipe-breaking method. Background Technology

[0002] The pipe-breaking method, also known as pipe expansion and lining short pipe repair or short pipe lining replacement repair, can be divided into two processes based on the power source: static pipe breaking and pneumatic pipe breaking. The pipe-breaking method involves breaking the existing pipe under static force or cutting it open with a cutting tool, and then expanding it with an expansion head. Compared with the excavation method, the pipe-breaking method has advantages such as faster construction speed, higher efficiency, lower price, better environmental protection, and less ground disturbance.

[0003] The existing equipment has the following disadvantages: when the push rod (guide rod) is pushed to the downstream well chamber, if part of the pipeline collapses and cannot be pushed in or the pushing force is too large, it is necessary to manually excavate the working well to clear the collapsed area or use excavation to repair it, which is time-consuming and costly.

[0004] Therefore, this application proposes an improved drill bit for pipe breaking to solve the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide an improved drill bit for pipe breaking to solve the problems mentioned above, such as the need for manual excavation of working wells to clear the collapsed area or the need for excavation to repair when a part of the pipe collapses and cannot be pushed forward or the pushing force is too large, which is time-consuming and costly.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an improved drill bit for pipe breaking, comprising a fixed pipe and a connecting pipe disposed on one side of the fixed pipe, and further comprising:

[0007] The ejection unit is located on the side of the connecting pipe away from the fixed pipe, and is used to push the drill bit forward as a whole;

[0008] A crushing unit is disposed between the fixed pipe and the ejection unit, and is used to crush the gravel and impurities at the pipe collapse site;

[0009] A power unit is located inside the fixed tube and connected to the crushing unit, used to drive the crushing unit to rotate.

[0010] The ejector unit includes a connector disposed on the side of the connecting pipe away from the fixed pipe, a movable disc sleeved on the connector, a fixed rod disposed on the upper part of the movable disc, and a mounting disc disposed on the upper part of the fixed rod. The mounting disc is connected to the power unit, and a top is disposed on the upper part of the mounting disc.

[0011] The connecting pipe is fitted with an elastic element between the mounting plate and the movable plate.

[0012] The pulverizing unit includes a rotating rod disposed on the movable disc, a connecting block disposed on the connecting pipe, and a pulverizing blade disposed on the side of the rotating rod away from the movable disc. A support rod is disposed between the connecting block and the rotating rod to support the rotating rod.

[0013] The connecting pipe is provided with a support component between the connecting pipe and the fixed pipe to support the connecting pipe. The support component includes a collar sleeved on the bottom of the connecting pipe, and the collar is connected to the fixed pipe through a support seat.

[0014] The power unit includes a motor disposed inside the fixed tube, a transmission component disposed above the motor, and a rotating shaft disposed above the transmission component. A transmission sleeve is disposed on the upper part of the rotating shaft, and the transmission sleeve is sleeved inside the mounting plate.

[0015] The mounting plate has a movable block connected to the transmission sleeve on the side adjacent to the transmission sleeve, and the connector has a movable groove at the position corresponding to the movable block for the movable block to move.

[0016] The mounting plate has a through groove at the position corresponding to the connector for the connector to pass through.

[0017] The transmission component includes a gear disposed at the bottom of the rotating shaft and a gear ring disposed at the power output end of the motor, wherein the gear is threadedly connected to the gear ring.

[0018] The toothed ring is equipped with a micro switch inside, and the micro switch is electrically connected to the motor.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention first pre-treats the pipeline by placing the new pipeline to be replaced above the drainage pipeline. Then, a hydraulic pipe jacking machine is installed in a side well, and the pipeline to be replaced is mounted on the machine. The pipeline is then jacked into the drainage pipeline using a jacking rod. The jacking unit, driven by the hydraulic pipe jacking machine, breaks up the old pipeline. The new pipeline is then inserted into the drainage pipeline. When the pipeline experiences internal collapse, the jacking unit compresses the crushing unit, causing it to extend outwards. The jacking unit then drives the power unit, which in turn powers the crushing unit to rotate, crushing the debris and blockages inside the collapsed pipeline. After crushing, the jacking unit can continue moving forward under the drive of the hydraulic pipe jacking machine, completing the pipeline replacement. This effectively solves the problem of increased jacking force on the jacking unit caused by pipeline collapse or partial collapse during the pipe-breaking method. The crushing unit breaks up the collapsed area, reducing the problem of drill bits getting stuck in the pipeline. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a front view in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a side view in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a cross-sectional view in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the ejector unit in one embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the power unit structure in one embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the pulverizing unit in one embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the support component in one embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the installation structure of the installation disk in one embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure in which the mounting disk is installed in the movable slot according to one embodiment of the present invention;

[0031] Figure 11 for Figure 4Enlarged structural diagram of Part A;

[0032] Figure 12 for Figure 6 Enlarged structural diagram of section B;

[0033] Figure 13 for Figure 7 Enlarged structural diagram of section C.

[0034] In the diagram: 1. Fixed pipe; 2. Connecting pipe; 21. Connector; 211. Moving groove; 3. Ejector unit; 31. Ejector head; 32. Mounting plate; 321. Moving block; 322. Through groove; 33. Fixed rod; 34. Movable plate; 35. Elastic element; 4. Crushing unit; 41. Rotating rod; 42. Support rod; 43. Connecting block; 44. Crushing blade; 45. Support component; 451. Collar; 452. Support base; 5. Power unit; 51. Transmission sleeve; 52. Rotating shaft; 53. Transmission component; 531. Gear; 532. Gear ring; 533. Micro switch; 54. Motor. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-13 The present invention provides a technical solution: an improved drill bit for pipe breaking, comprising a fixed pipe 1 and a connecting pipe 2 disposed on one side of the fixed pipe 1, and further comprising:

[0037] The ejector unit 3 is located on the side of the connecting pipe 2 away from the fixed pipe 1, and is used to push the drill bit forward as a whole;

[0038] The crushing unit 4 is set between the fixed pipe 1 and the ejection unit 3 and is used to crush the gravel and impurities at the pipe collapse site.

[0039] The power unit 5 is located inside the fixed tube 1 and connected to the crushing unit 4, and is used to drive the crushing unit 4 to rotate.

[0040] It should be noted that during operation, the pipeline is first pre-treated by placing the new pipeline to be replaced above the drainage pipeline. Then, the hydraulic pipe jacking machine is installed in one side well, and the pipeline to be replaced is installed on the hydraulic pipe jacking machine. The pipeline is then pushed into the pipeline by the jacking rod. The jacking unit 3, driven by the hydraulic pipe jacking machine, breaks up the old pipeline, and then the new pipeline is inserted into the drainage pipeline. When the pipeline collapses internally, the jacking unit 3 squeezes the crushing unit 4, causing the crushing unit 4 to extend outward. Then, the jacking unit 3 drives the power unit 5 to move, so that the power unit 5 provides power to the crushing unit 4 to rotate, allowing the crushing unit 4 to crush the gravel and blockages inside the collapsed pipeline. After crushing, the jacking unit 3 can continue to move forward under the drive of the hydraulic pipe jacking machine to complete the pipeline replacement work. This method can effectively solve the problem of increased jacking force of the jacking unit 3 caused by pipeline collapse or partial collapse during the pipeline repair process using the pipe breaking method. Then, the crushing unit 4 breaks up the collapsed area, reducing the problem of the drill bit getting stuck in the pipeline.

[0041] In one embodiment, the ejector unit 3 includes a connector 21 disposed on the side of the connecting pipe 2 away from the fixed pipe 1, a movable disc 34 sleeved on the connector 21, a fixed rod 33 disposed on the upper part of the movable disc 34, and a mounting disc 32 disposed on the upper part of the fixed rod 33. The mounting disc 32 is connected to the power unit 5, and an ejector head 31 is disposed on the upper part of the mounting disc 32.

[0042] With this design, the diameter of the jacking head 31 is larger than the original pipe size. Then, driven by the hydraulic pipe jacking machine, the jacking head 31 is pushed into the inside of the pipe to break up the original pipe. When the pipe encounters a collapse, the jacking head 31 will come into contact with the collapse, and then drive the mounting plate 32 to move closer to the fixed pipe 1. Then, the fixed rod 33 drives the movable plate 34 to move on the connecting pipe 2. Then, the movable plate 34 drives the crushing unit 4 to expand outward. During the movement of the mounting plate 32, the power unit 5 moves, so that the power unit 5 drives the crushing unit 4 to rotate and break up the collapsed area.

[0043] In one embodiment, the connecting pipe 2 is fitted with an elastic element 35 between the mounting plate 32 and the movable plate 34. The elastic element 35 is made of a spring or an elastic pad.

[0044] With this design, once the collapsed area is cleared, the collapse will no longer compress the top 31. Then, the elastic element 35 will drive the mounting plate 32 to move back to its original position, causing the crushing unit 4 and the power unit 5 to move back to their original positions.

[0045] In one embodiment, the crushing unit 4 includes a rotating rod 41 disposed on the movable disk 34, a connecting block 43 disposed on the connecting pipe 2, and a crushing blade 44 disposed on the side of the rotating rod 41 away from the movable disk 34. A support rod 42 is disposed between the connecting block 43 and the rotating rod 41 to support the rotating rod 41.

[0046] With this design, the movable disc 34 drives the rotating rod 41 to move downward, which in turn allows the support rod 42 to support the rotating rod 41. Then, the rotating rod 41 drives the crushing blade 44 to extend outward, so that the crushing blade 44 comes into contact with the rocks at the collapse site.

[0047] In one embodiment, a support component 45 is provided between the connecting pipe 2 and the fixed pipe 1 to support the connecting pipe 2. The support component 45 includes a collar 451 sleeved on the bottom of the connecting pipe 2. The collar 451 is connected to the fixed pipe 1 through a support base 452.

[0048] With this design, the collar 451 can be fixed to the upper part of the fixed tube 1 by the support base 452, and then the connecting tube 2 can be rotatably connected to the inside of the collar 451.

[0049] In one embodiment, the power unit 5 includes a motor 54 disposed inside the fixed tube 1, a transmission component 53 disposed on the upper part of the motor 54, and a rotating shaft 52 disposed on the upper part of the transmission component 53. A transmission sleeve 51 is disposed on the upper part of the rotating shaft 52, and the transmission sleeve 51 is sleeved inside the mounting plate 32.

[0050] With this design, when the mounting plate 32 moves closer to the fixed pipe 1, it drives the transmission sleeve 51 to move closer to the fixed pipe 1, causing the rotating shaft 52 to drive the transmission component 53 to mesh with each other. This causes the motor 54 to drive the rotating shaft 52 to rotate through the transmission component 53, which in turn causes the transmission sleeve 51 to drive the mounting plate 32 to rotate, which in turn causes the fixed rod 33 to drive the movable plate 34 to rotate, thus causing the crushing unit 4 to crush the collapsed area.

[0051] In one embodiment, a movable block 321 connected to the transmission sleeve 51 is provided on the side of the mounting plate 32 near the transmission sleeve 51, and a movable groove 211 for the movable block 321 to move is provided at the position of the connector 21 corresponding to the movable block 321.

[0052] With this design, when the mounting plate 32 moves down, the moving block 321 drives the transmission sleeve 51 to move downward, and the moving groove 211 facilitates the movement of the moving block 321.

[0053] In one embodiment, a through groove 322 is provided at the position of the corresponding connector 21 on the mounting plate 32 for the connector 21 to pass through.

[0054] With this design, the connector 21 can pass through the inside of the through groove 322 during its up-and-down movement. The through groove 322 limits the movement position of the connector 21, making the up-and-down movement of the connector 21 more stable.

[0055] In one embodiment, the transmission component 53 includes a gear 531 disposed at the bottom of the rotating shaft 52 and a gear ring 532 disposed at the power output end of the motor 54, wherein the gear 531 and the gear ring 532 are threadedly connected.

[0056] With this design, the rotating shaft 52 drives the gear 531 to move downward, so that the gear 531 is inserted into the inside of the gear ring 532, thereby making the gear 531 mesh with the gear ring 532. As a result, the motor 54 drives the rotating shaft 52 to rotate during the rotation process through the meshing of the gear 531 and the gear ring 532.

[0057] In one embodiment, a micro switch 533 is provided inside the toothed ring 532, and the micro switch 533 is electrically connected to the motor 54.

[0058] With this design, after the gear 531 is inserted into the gear ring 532, it will squeeze the micro switch 533, which will then turn on the motor 54. After the collapse is resolved, the elastic element 35 will drive the gear 531 to perform a reset movement, and the gear 531 will stop squeezing the micro switch 533, thereby stopping the motor 54 from rotating.

Claims

1. An improved drill bit for pipe breaking, comprising a fixed pipe (1) and a connecting pipe (2) disposed on one side of the fixed pipe (1), characterized in that, Also includes: The ejection unit (3) is located on the side of the connecting pipe (2) away from the fixed pipe (1) and is used to push the drill bit forward as a whole. The crushing unit (4) is set between the fixed pipe (1) and the ejection unit (3) for crushing the gravel and impurities at the pipe collapse site; The power unit (5) is located inside the fixed tube (1) and connected to the crushing unit (4) for driving the crushing unit (4) to rotate; The ejector unit (3) includes a connector (21) disposed on the side of the connecting pipe (2) away from the fixed pipe (1), a movable disc (34) sleeved on the connector (21), a fixed rod (33) disposed on the upper part of the movable disc (34), and a mounting disc (32) disposed on the upper part of the fixed rod (33). The mounting disc (32) is connected to the power unit (5), and the upper part of the mounting disc (32) is provided with an ejector head (31). The power unit (5) includes a motor (54) disposed inside the fixed tube (1), a transmission component (53) disposed on the upper part of the motor (54), and a rotating shaft (52) disposed on the upper part of the transmission component (53). A transmission sleeve (51) is disposed on the upper part of the rotating shaft (52), and the transmission sleeve (51) is sleeved inside the mounting plate (32).

2. The improved drill bit for the pipe-breaking method according to claim 1, characterized in that: The connecting pipe (2) is fitted with an elastic element (35) between the mounting plate (32) and the movable plate (34).

3. The improved drill bit for the pipe-breaking method according to claim 1, characterized in that: The crushing unit (4) includes a rotating rod (41) disposed on the movable disc (34), a connecting block (43) disposed on the connecting pipe (2), and a crushing blade (44) disposed on the side of the rotating rod (41) away from the movable disc (34). A support rod (42) is disposed between the connecting block (43) and the rotating rod (41) to support the rotating rod (41).

4. The improved drill bit for the pipe-breaking method according to claim 1, characterized in that: A support component (45) is provided between the connecting pipe (2) and the fixed pipe (1) to support the connecting pipe (2). The support component (45) includes a collar (451) sleeved on the bottom of the connecting pipe (2). The collar (451) is connected to the fixed pipe (1) through a support seat (452).

5. An improved drill bit for pipe breaking according to claim 1, characterized in that: The mounting plate (32) is provided with a movable block (321) connected to the transmission sleeve (51) on the side close to the transmission sleeve (51), and the connector (21) is provided with a movable groove (211) for the movable block (321) to move at the position corresponding to the movable block (321).

6. The improved drill bit for pipe breaking method according to claim 5, characterized in that: The mounting plate (32) has a through groove (322) at the position corresponding to the connector (21) for the connector (21) to pass through.

7. An improved drill bit for pipe breaking according to claim 5, characterized in that: The transmission component (53) includes a gear (531) disposed at the bottom of the rotating shaft (52) and a gear ring (532) disposed at the power output end of the motor (54), wherein the gear (531) is threadedly connected to the gear ring (532).

8. An improved drill bit for pipe breaking according to claim 7, characterized in that: The toothed ring (532) is equipped with a micro switch (533), which is electrically connected to the motor (54).

Images