Pipe jacking machine cutter head with replacement structure

Abstract

The utility model relates to the technical field of pipe jacking machine cutter head, disclose a pipe jacking machine cutter head with replacement structure, including the connecting pipe, the connecting pipe left side rotationally connected have the turntable, the turntable left side front and back both sides all are equipped with the limit slot, the limit slot inner wall inserts and has the connecting block, the limit slot inner wall is connected with the connecting block inner wall through the limiting component to be used for the location of connecting block, two the connecting block is apart from one side fixedly connected with cutter head connecting ring, cutter head connecting ring front side fixedly connected with cutter head main part, cutter head main part right side fixedly connected with the filter screen, the filter screen outer wall rotationally connected have broken ring, in the utility model, when disassembling, only need to rotate the screw of cutter head connecting ring top, drive the gear post of screw bottom end to rotate, drive the limit block to rotate and separate the limit slot, can remove the location of connecting block, quickly tear down cutter head connecting ring and cutter head main part, when installing, reverse operation can be fixed.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking machine cutterhead technology, and in particular to a pipe jacking machine cutterhead with a replaceable structure. Background Technology

[0002] The cutterhead of a pipe jacking machine is a key component, playing a crucial role in underground pipeline construction. It is typically located at the front of the machine and is generally circular in shape. The cutterhead is equipped with various types of blades, such as roller cutters, cutting blades, and scrapers. Each blade has a specific function: roller cutters break hard rock, cutting blades cut through soil layers, and scrapers level and clean the excavation face. During operation, the cutterhead rotates via a power system, relying on the blades to contact the soil and rock, cutting and breaking them to create space for the subsequent pipe jacking. Furthermore, the cutterhead's structural design is also very sophisticated; some models feature adjustable opening ratios to better handle different geological conditions and control the amount of excavated soil. Its performance directly affects the efficiency and quality of pipe jacking construction, as well as the degree of disturbance to the surrounding environment, making it one of the core elements ensuring the smooth progress of pipe jacking projects.

[0003] The disassembly of existing pipe jacking machine cutterheads requires strict adherence to specific procedures, which is extremely time-consuming and labor-intensive, adding considerable inconvenience to daily maintenance and troubleshooting. Furthermore, the underground environment is complex during cutterhead operation, often encountering large rocks. These rocks can easily mix into the discharged mud flow during excavation, becoming lodged in the mud discharge pipe, causing poor or even blocked mud discharge, preventing normal mud-water circulation, affecting construction progress, and potentially damaging related systems of the pipe jacking machine due to abnormal pressure. To address this technical problem, this application proposes a pipe jacking machine cutterhead with a replaceable structure. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a replacement cutterhead for a pipe jacking machine. During disassembly, simply rotate the screw at the top of the cutterhead connecting ring to rotate the toothed column at the bottom of the screw, thereby driving the limiting block to rotate out of the limiting groove and releasing the limiting of the connecting block. This allows for quick removal of the cutterhead connecting ring from the cutterhead body. During installation, the reverse operation is performed to fix the cutterhead. This significantly reduces the time and manpower required for disassembly, providing convenience for daily maintenance and troubleshooting.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A pipe jacking machine cutterhead with a replaceable structure includes a connecting pipe. A turntable is rotatably connected to the left side of the connecting pipe. Limiting grooves are formed on both the front and rear sides of the left side of the turntable. Connecting blocks are inserted into the inner walls of the limiting grooves. The inner walls of the limiting grooves are connected to the inner walls of the connecting blocks through limiting components to limit the movement of the connecting blocks. A cutterhead connecting ring is fixedly connected to one side of the two connecting blocks. A cutterhead body is fixedly connected to the front side of the cutterhead connecting ring. A filter screen is fixedly connected to the right side of the cutterhead body. A crushing ring is rotatably connected to the outer wall of the filter screen. A crushing blade is fixedly connected to the left side of the outer wall of the crushing ring. The inner wall of the crushing ring is connected to the outer wall of the connecting pipe through a rotating component to rotate the crushing ring.

[0006] Furthermore, the limiting component includes a limiting block rotatably connected to the inner wall of the connecting block, the outer wall of the limiting block abutting against the inner wall of the limiting groove, a third gear fixedly connected to one end of each of the two limiting blocks, and a toothed ring rotatably connected to the inner wall of the cutter disc connecting ring.

[0007] Furthermore, two first tooth sets are fixedly connected to the left side of the tooth ring, and the outer wall of the first tooth set meshes with the outer wall of the third gear.

[0008] Furthermore, a screw is threadedly connected to the top of the cutter head connecting ring, and a toothed column is fixedly connected to the bottom end of the screw. The outer wall of the toothed column is engaged with the right side of the toothed ring.

[0009] Furthermore, the rotating assembly includes a first gear rotatably connected to the right side of the inner wall of the cutter head connecting ring, a second gear rotatably connected to the left side of the inner wall of the cutter head connecting ring, and a second set of teeth fixedly connected to the outer wall of the connecting tube.

[0010] Furthermore, the outer wall of the second tooth assembly meshes with the outer wall of the first gear, and the outer wall of the second gear meshes with the outer side of the inner wall of the crushing ring.

[0011] Furthermore, the outer wall of the first gear is inserted into the connecting pipe and the outer wall of the turntable.

[0012] This utility model has the following beneficial effects: 1. In this utility model, during disassembly, it is only necessary to rotate the screw at the top of the cutter head connecting ring to rotate the toothed column at the bottom of the screw, thereby driving the limiting block to rotate and disengage from the limiting groove, thus releasing the limiting of the connecting block and quickly removing the cutter head connecting ring from the cutter head body; during installation, the reverse operation can be used to fix it; it greatly reduces the time and manpower required for disassembly, and provides convenience for daily maintenance and fault diagnosis.

[0013] 2. In this invention, the filter screen can intercept large rocks mixed with mud during underground construction. Simultaneously, when the cutterhead is working, the crushing ring and crushing blades rotate in opposite directions, crushing the large rocks intercepted by the filter screen. This design prevents large rocks from getting stuck in the mud discharge pipe, thus avoiding obstruction or blockage and ensuring normal mud-water circulation. Attached Figure Description

[0014] Figure 1 This is a perspective view of a pipe jacking machine cutterhead with a replaceable structure proposed in this utility model; Figure 2 This is a schematic diagram of a filter screen for a pipe jacking machine cutterhead with a replaceable structure, as proposed in this utility model. Figure 3 This is a schematic diagram of a toothed ring on the cutterhead of a pipe jacking machine with a replaceable structure, as proposed in this utility model. Figure 4 This is a schematic diagram of a connecting block for a pipe jacking machine cutterhead with a replaceable structure, as proposed in this utility model. Figure 5 This is a schematic diagram of the toothed column of a pipe jacking machine cutterhead with a replaceable structure proposed in this utility model; Figure 6 This is a schematic diagram of the third gear of a pipe jacking machine cutterhead with a replaceable structure proposed in this utility model.

[0015] Legend: 1. Connecting pipe; 2. Turntable; 3. Cutter head connecting ring; 4. Cutter head body; 5. Screw; 6. Filter screen; 7. Crushing ring; 8. Crushing blade; 9. Gear ring; 10. First gear; 11. Second gear; 12. Gear column; 13. First tooth set; 14. Third gear; 15. Connecting block; 16. Limiting block; 17. Second tooth set. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figure 1 , Figure 4 and Figure 5This utility model provides an embodiment of a pipe jacking machine cutterhead with a replaceable structure, including a connecting pipe 1. A turntable 2 is rotatably connected to the left side of the connecting pipe 1, and the turntable 2 rotates via a motor. Limiting grooves are provided on both the front and rear sides of the left side of the turntable 2. Connecting blocks 15 are inserted into the inner walls of the limiting grooves, and limiting blocks 16 are rotatably connected to the inner walls of the connecting blocks 15. The outer walls of the limiting blocks 16 abut against the inner walls of the limiting grooves and engage with the limiting grooves to fix the connecting blocks 15. (See reference...) Figure 5 Two limiting blocks 16 are connected at one end and a third gear 14 is fixedly connected to each other. The rotation of the third gear 14 drives the limiting blocks 16 to rotate. A toothed ring 9 is rotatably connected to the inner wall of the cutter head connecting ring 3. Two first tooth groups 13 are fixedly connected to the left side of the toothed ring 9. The outer wall of the first tooth group 13 meshes with the outer wall of the third gear 14. The rotation of the toothed ring 9 drives the first tooth group 13 to rotate and mesh with the third gear 14, thereby causing the third gear 14 to rotate. A screw 5 is threadedly connected to the top of the cutter head connecting ring 3. A toothed column 12 is fixedly connected to the bottom of the screw 5. The outer wall of the toothed column 12 meshes with the right side of the toothed ring 9. Rotating the screw 5 causes the screw 5 to rotate and move according to the thread groove, thereby causing the toothed column 12 to slide and rotate and mesh with the toothed ring 9, causing the toothed ring 9 to rotate. Two connecting blocks 15 are fixedly connected to the cutter head connecting ring 3 on one side away from each other. A cutter head body 4 is fixedly connected to the front side of the cutter head connecting ring 3. The limiting blocks 16 engage with the limiting groove to fix the cutter head connecting ring 3 and the cutter head body 4. Reference Figures 1-3 A filter screen 6 is fixedly connected to the right side of the cutter head body 4 to intercept large stones. A crushing ring 7 is rotatably connected to the outer wall of the filter screen 6. A crushing blade 8 is fixedly connected to the left side of the outer wall of the crushing ring 7. The crushing ring 7 and the crushing blade 8 are in opposite directions to the cutter head body 4 to crush the stones and prevent them from clogging the mud discharge pipe. A first gear 10 is rotatably connected to the right side of the inner wall of the cutter head connecting ring 3, and a second gear 11 is rotatably connected to the left side of the inner wall of the cutter head connecting ring 3. A second tooth set 17 is fixedly connected to the outer wall of the connecting pipe 1. The outer wall of the second tooth set 17 meshes with the outer wall of the first gear 10. The first gear 10 meshes with the second tooth set 17 when the cutter head connecting ring 3 rotates. The outer wall of the second gear 11 meshes with the outer side of the inner wall of the crushing ring 7. The rotation of the first gear 10 drives the rotation of the second gear 11, and the rotation of the second gear 11 meshes with the crushing ring 7, driving the crushing ring 7 to rotate. The outer wall of the first gear 10 is inserted into the outer wall of the connecting pipe 1 and the turntable 2, and the equipment can be disassembled.

[0018] Working principle: When the machine starts working, the turntable 2 rotates, which in turn drives the connecting block 15 to rotate. This, in turn, drives the cutter head connecting ring 3, causing the cutter head body 4 to rotate. The cutter head body 4 then contacts the soil and rocks, cutting and crushing them. At the same time, the first gear 10 meshes with the second gear set 17 when the cutter head connecting ring 3 rotates. This causes the first gear 10 to rotate, which in turn drives the second gear 11 to rotate. The second gear 11 then meshes with the crushing ring 7, causing the crushing ring 7 and the crushing blades 8 to rotate in the opposite direction, crushing the rocks and preventing them from clogging the mud discharge pipe.

[0019] When it is necessary to disassemble the cutter head connecting ring 3 and the cutter head body 4, rotate screw 5 to rotate and displace it according to the thread groove, thereby causing the tooth column 12 to slide and rotate and mesh with the tooth ring 9, causing the tooth ring 9 to rotate. The rotation of the tooth ring 9 drives the first tooth set 13 to rotate and mesh with the third gear 14, thereby causing the third gear 14 to rotate. The rotation of the third gear 14 drives the limit block 16 to rotate, releasing the limit groove from the limit block 16, thereby releasing the limit on the connecting block 15 and the cutter head connecting ring 3, and disassembling the cutter head connecting ring 3 and the cutter head body 4. During installation, align the connecting block 15 with the limit groove and insert it. Rotate screw 5 in the opposite direction to rotate the limit block 16, which engages with the limit groove to fix the cutter head connecting ring 3 and the cutter head body 4.

[0020] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cutterhead for a pipe jacking machine with a replaceable structure, characterized in that, The device includes a connecting pipe (1), a turntable (2) is rotatably connected to the left side of the connecting pipe (1), and a limiting groove is opened on both the front and rear sides of the left side of the turntable (2). A connecting block (15) is inserted into the inner wall of the limiting groove. The inner wall of the limiting groove is connected to the inner wall of the connecting block (15) through a limiting component to limit the connecting block (15). A cutter disc connecting ring (3) is fixedly connected to one side away from the two connecting blocks (15). A cutter disc body (4) is fixedly connected to the front side of the cutter disc connecting ring (3). A filter screen (6) is fixedly connected to the right side of the cutter disc body (4). A crushing ring (7) is rotatably connected to the outer wall of the filter screen (6). A crushing blade (8) is fixedly connected to the left side of the outer wall of the crushing ring (7). The inner wall of the crushing ring (7) is connected to the outer wall of the connecting pipe (1) through a rotating component to rotate the crushing ring (7).

2. The cutterhead of a pipe jacking machine with a replaceable structure according to claim 1, characterized in that: The limiting component includes a limiting block (16) rotatably connected to the inner wall of the connecting block (15). The outer wall of the limiting block (16) abuts against the inner wall of the limiting groove. A third gear (14) is fixedly connected to one end of each of the two limiting blocks (16). A toothed ring (9) is rotatably connected to the inner wall of the cutter head connecting ring (3).

3. The cutterhead of a pipe jacking machine with a replaceable structure according to claim 2, characterized in that: The toothed ring (9) has two first tooth groups (13) fixedly connected to its left side, and the outer wall of the first tooth group (13) meshes with the outer wall of the third gear (14).

4. The cutterhead of a pipe jacking machine with a replaceable structure according to claim 3, characterized in that: The top of the cutter head connecting ring (3) is threaded with a screw (5), and the bottom end of the screw (5) is fixedly connected with a toothed column (12). The outer wall of the toothed column (12) meshes with the right side of the toothed ring (9).

5. The cutterhead of a pipe jacking machine with a replaceable structure according to claim 1, characterized in that: The rotating assembly includes a first gear (10) rotatably connected to the right side of the inner wall of the cutter head connecting ring (3), a second gear (11) rotatably connected to the left side of the inner wall of the cutter head connecting ring (3), and a second tooth set (17) fixedly connected to the outer wall of the connecting pipe (1).

6. A pipe jacking machine cutterhead with a replaceable structure according to claim 5, characterized in that: The outer wall of the second tooth group (17) meshes with the outer wall of the first gear (10), and the outer wall of the second gear (11) meshes with the outer side of the inner wall of the crushing ring (7).

7. A pipe jacking machine cutterhead with a replaceable structure according to claim 6, characterized in that: The outer wall of the first gear (10) is inserted into the outer wall of the connecting pipe (1) and the turntable (2).

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