Tool bit structure of pipe jacking machine for pipe jacking construction in water-rich pebble stratum

Abstract

The utility model discloses a tool bit structure of a pipe jacking machine for pipe jacking construction in a water-rich pebble stratum. The tool bit structure comprises a cutter head and a crushing bin assembly, a plurality of scrapers are fixedly welded to the two sides of the supporting block, the number of the scrapers is at least two pairs, by increasing the number of the scrapers, more soil bodies can be treated by the pipe jacking machine within the same time, the construction efficiency is improved, meanwhile, the soil bodies between the scrapers can be fully stirred, and the construction quality is improved; meanwhile, the inner wall of the crushing bin is filled with a plurality of slag inlet holes in an array mode, and the slag inlet holes at least occupy half of the interior of the crushing bin. A square through groove is formed in the inner wall of the other half of the crushing bin, slag feeding can be more convenient by additionally arranging the slag feeding holes, the crushing efficiency is improved, the situation of blockage in the crushing process is prevented, the situation can be effectively prevented through the slag feeding holes, the number of times of manual clearing is reduced, and the clearing cost is greatly reduced. And smooth proceeding of crushing work is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of pipe jacking machine technology, specifically relating to a cutter head structure for pipe jacking construction in water-rich pebble strata. Background Technology

[0002] Pipe jacking machines are mechanical equipment used in municipal underground trenchless engineering. They can complete the laying of tunnels, railways, rivers, ground buildings, underground structures and various underground pipelines without excavating the surface layer. Under the action of the jacking machine, the tunnel or pipeline is jacked to the predetermined position.

[0003] Using pipe jacking machines allows for the completion of large amounts of work in a shorter time, reducing manpower requirements and thus lowering labor costs. This significantly improves project progress and quality while minimizing collateral damage. Furthermore, pipe jacking machines can maintain optimal performance under various environmental conditions, such as high temperatures, thunderstorms, strong winds, and heavy snow. Therefore, pipe jacking machines play a crucial role in constructing small tunnels or pipelines.

[0004] However, current pipe jacking machines are still not efficient and fast enough in cutting soil when dealing with hard soil or working for long periods of time. At the same time, when the current pipe jacking machines work for a long time, the cut soil tends to accumulate in and around the slag discharge hole, causing soil accumulation in the crushing chamber and blockage, which greatly reduces the efficiency of the machine. Sometimes, manual cleaning is even required, which is very inconvenient.

[0005] Therefore, a new cutter head structure for pipe jacking machines in water-rich pebble formations is needed to solve the above problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model designs a cutter head structure for pipe jacking machines in water-rich pebble strata. This structure can increase the cutting ability of the pipe jacking machine and increase its working efficiency. At the same time, it can increase the equipment's soil discharge capacity, so that soil and gravel will not accumulate in or near the slag discharge hole, which would cause soil accumulation and blockage in the crushing chamber. This reduces the number of times manual cleaning is required, greatly reduces the cleaning cost, and makes the entire cutting process highly efficient.

[0007] To achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution: a cutter head structure for pipe jacking construction in water-rich pebble strata, comprising: a cutter head and a crushing chamber assembly; the cutter head is detachably installed on the upper end of the crushing assembly, the cutter head is generally circular, and several square grooves are opened along the diameter direction of the cutter head, with roller cutters movably installed on the square grooves; U-shaped grooves are opened on both sides of the square grooves with a diameter perpendicular to the direction of the square grooves, and support blocks are fixedly installed on the U-shaped grooves, with several scrapers fixedly welded to both sides of the support blocks;

[0008] The crushing chamber assembly includes a drive motor and a crushing chamber. The crushing chamber is funnel-shaped and has a circular through hole at its bottom. The drive motor is detachably installed on the circular through hole. The inner wall of the crushing chamber is filled with an array of several slag inlet holes, and the slag inlet holes occupy at least half of the interior of the crushing chamber. The other half of the inner wall of the crushing chamber has a square through groove.

[0009] Furthermore, there are at least five square grooves, and at least two pairs of scrapers located on both sides of the support block;

[0010] Furthermore, a single roller cutter is obliquely mounted on the cutter disc between the scraper and the roller cutter, and the obliquely mounted roller cutter and the center of the cutter disc are at a 45-degree angle.

[0011] Furthermore, the spacing between the scrapers is between 20cm and 30cm, and the outermost scraper is surrounded by an arc-shaped block, the radius of curvature of which is equal to the radius of curvature of the entire blade disc.

[0012] The beneficial effects of this utility model are:

[0013] This invention features several scrapers fixedly welded to both sides of the support block, with at least two rows of scrapers. Increasing the number of scrapers allows the pipe jacking machine to process more soil in the same amount of time, improving construction efficiency. It also ensures thorough mixing of the soil between the scrapers, improving construction quality. Furthermore, the invention includes an array of slag inlets on the inner wall of the crushing chamber, with each inlet occupying at least half of the chamber's interior. A square through-groove is formed on the other half of the inner wall of the crushing chamber. Increasing the number of slag inlets makes slag feeding more convenient, improving crushing efficiency and preventing blockages during crushing. These slag inlets effectively prevent blockages, reducing the frequency of manual cleaning, significantly lowering cleaning costs, and ensuring smooth crushing operations. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1This is a cross-sectional schematic diagram of the cutter head structure of a pipe jacking machine used in water-rich pebble formations.

[0016] Figure 2 This is a schematic diagram of the crushing chamber structure of a pipe jacking machine cutter head for pipe jacking construction in water-rich pebble strata.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1-Cutter head, 11-Square groove, 12-Rolling cutter, 13-U-shaped groove, 14-Support block, 15-Scraper, 16-Arc block, 2-Crushing assembly, 21-Drive motor, 22-Crushing chamber, 221-Circular through hole, 222-Slag inlet hole, 223-Square through groove. Detailed Implementation

[0019] This utility model discloses a cutter head structure for pipe jacking construction in water-rich pebble formations, including: a cutter head 1 and a crushing chamber 22 assembly; the cutter head 1 is detachably installed on the upper end of the crushing assembly 2, the cutter head 1 is generally circular, and the cutter head 1 has several square grooves 11 along the diameter direction, on which roller cutters 12 are movably installed; U-shaped grooves 13 are opened on both sides of the square grooves 11 with a diameter perpendicular to the direction of the square grooves 11, and support blocks 14 are fixedly installed on the U-shaped grooves 13, and several scrapers 15 are fixedly welded to both sides of the support blocks 14;

[0020] The crushing chamber 22 assembly includes a drive motor 21 and a crushing chamber 22. The crushing chamber 22 is funnel-shaped and has a circular through hole 221 at its bottom. The drive motor 21 is detachably installed on the circular through hole 221. The inner wall of the crushing chamber 22 is filled with an array of several slag inlet holes 222, and the slag inlet holes 222 occupy at least half of the interior of the crushing chamber 22. The other half of the inner wall of the crushing chamber 22 has a square through groove 223. By increasing the number of slag inlet holes 222 in the crushing chamber 22, the crushing efficiency is improved, and blockage during the crushing process is prevented. The slag inlet holes 222 can effectively prevent this from happening, reduce the number of times manual cleaning is required, greatly reduce the cleaning cost, and ensure the smooth operation of the crushing work.

[0021] Example 1

[0022] In this embodiment, there are at least five square grooves 11, and at least two pairs of scrapers 15 located on both sides of the support block 14. In this embodiment, increasing the number of scrapers 15 allows the pipe jacking machine to process more soil in the same amount of time, improving construction efficiency. It also ensures thorough mixing of the soil between the scrapers 15, improving construction quality. In this embodiment, the spacing between the scrapers 15 is between 20cm and 30cm, and an arc-shaped block 16 is provided around the outermost scraper 15. The radius of curvature is equal to the radius of curvature of the entire cutter head 1. The spacing of the scrapers 15 is set between 20-30cm. The gap between the scrapers 15 allows the crushed stones and soil to fall into the crushing chamber for further crushing. If the spacing is too large, the scrapers 15 will not be able to grind the rocks or soil into finer particles, which may block the slag inlet 222. If the gap is too small, the crushed rocks and soil will not be able to enter the crushing chamber 22. Therefore, setting the spacing of the scrapers 15 between 20-30cm is most suitable.

[0023] Example 2

[0024] In this embodiment, a single roller cutter 12 is obliquely installed on the cutter head 1 between the scraper 15 and the roller cutter 12, and the obliquely installed roller cutter 12 and the center of the cutter head 1 are at a 45-degree angle. The 45-degree angle installation of the roller cutter 12 makes it easier for the tool to cut into the workpiece, reduces the cutting force, and makes it easier for the chips to be discharged, reducing the possibility of chip blockage and accumulation, which is beneficial to improving processing quality and efficiency. In this embodiment, the roller cutter 12 is obliquely installed on the cutter head 1. The obliquely installed roller cutter 12 is used to roll the rock of the excavation face to break the rock and advance the tunnel. This is mainly applicable to full-section rock strata and some mixed strata. During the operation of the pipe jacking machine, the roller cutter 12 is installed on the cutter head 1 at a certain angle. The obliquely installed roller cutter 12 can cut into the rock better, thereby effectively breaking the rock and realizing the tunneling of the pipe jacking machine.

[0025] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation methods described.

Claims

1. A cutter head structure for pipe jacking machine in water-rich pebble formations, characterized in that, include: The cutter head and crushing chamber assembly are detachably mounted on the upper end of the crushing chamber assembly. The cutter head is circular in shape and has several square slots along its diameter. Roller cutters are movably mounted on the square slots. U-shaped slots are opened on both sides of the square slots with a diameter perpendicular to the square slots. Support blocks are fixedly installed on the U-shaped slots, and several scrapers are fixedly welded to both sides of the support blocks. The crushing chamber assembly includes a drive motor and a crushing chamber. The crushing chamber is funnel-shaped and has a circular through hole at its bottom. The drive motor is detachably installed on the circular through hole. The inner wall of the crushing chamber is filled with an array of several slag inlet holes, and the slag inlet holes occupy at least half of the interior of the crushing chamber. The other half of the inner wall of the crushing chamber has a square through groove.

2. The cutter head structure for pipe jacking in water-rich pebble formations according to claim 1, characterized in that, There are at least 5 square grooves, and at least two pairs of scrapers located on both sides of the support block.

3. The cutter head structure for pipe jacking in water-rich pebble formations according to claim 1, characterized in that, A single roller cutter is mounted at an angle on the cutter head between the scraper and the roller cutter, and the center of the roller cutter and the cutter head are at a 45-degree angle.

4. The cutter head structure for pipe jacking in water-rich pebble formations according to claim 1, characterized in that, The spacing between the scrapers is between 20cm and 30cm, and the outermost scraper is surrounded by an arc-shaped block with a radius of curvature equal to that of the entire scraper disc.

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