Improved pipe jacking machine head suitable for backfilling rock stratum

Abstract

The utility model belongs to the technical field of pipe jacking machine heads, and discloses an improved pipe jacking machine head suitable for backfilling block stone stratums, which comprises a pipe jacking machine head body, a square block I is fixedly arranged on the outer side of the lower end face of the pipe jacking machine head body, a column groove I is formed in the middle of the square block I, a round body is rotatably arranged in the column groove I, and the round body is fixedly arranged on the lower end face of the pipe jacking machine head body. A first inner semicircular hob is fixedly arranged on the right side of the outer end face of the round body, a long heavy hob is fixedly arranged on the left end face of the first inner semicircular hob and rotates in the middle of the outer side of the round body, and a second inner semicircular hob is fixedly arranged on the left end face of the long heavy hob and rotates on the left side of the outer end face of the round body. By means of the device, when a cutter is used for cutting block stones, the block stones with different sizes can be cut and smashed, and the situation that the cutter needs to be replaced and maintained due to the fact that the block stones are clamped into the cutter after being cut into small blocks, time and labor are wasted, the working efficiency is affected, and benefits are lost can be prevented.

Description

Technical Field

[0001] This utility model belongs to the field of pipe jacking head technology, specifically an improved pipe jacking head suitable for backfilling rock formations. Background Technology

[0002] The pipe jacking machine head is placed at the very front of the pipe section being jacked. Its main functions are: first, to excavate the soil in front while maintaining the stability of the soil and water pressure; and second, to control the attitude of the pipe jacking machine through the correction device to ensure that the pipe section is jacked in the designed axial direction. Currently, the main types of pipe jacking machines are slurry balance and earth pressure balance.

[0003] Meanwhile, the expansion device disclosed in the announcement (CN202370533U) includes a pipe jacking head, a front expansion pipe and a rear expansion pipe respectively fixed to the front and rear ends of the pipe jacking head. The front expansion pipe is formed by two semi-circular rings. The rear expansion pipe is also formed by two semi-circular rings. A special-shaped movable connecting component is provided at the end of the rear expansion pipe away from the front expansion pipe. The special-shaped movable connecting component consists of a large end of a diameter-changing device for connecting the pipe and a small end of a diameter-changing device for connecting the pipe jacking head.

[0004] The aforementioned pipe jacking head expansion device can only be used to adjust the diameter of the pipe jacking head. It cannot improve the pipe jacking head's ability to cut different types of stones, prevent stones that are too small from getting stuck inside the cutter, thus avoiding excessively long cutter maintenance time and affecting work efficiency, or prevent the need to replace severely damaged cutters, which would result in losses during use.

[0005] Therefore, an improved pipe jacking head suitable for backfilled rock formations is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides an improved pipe jacking head suitable for backfilled rock formations. It has the advantages of preventing the cutting tool from cutting rocks of different sizes, and preventing the rocks from getting stuck in the cutting tool after being cut into small pieces, thus avoiding time-consuming and labor-intensive replacements and repairs that affect work efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an improved pipe jacking head suitable for backfilling rock formations, comprising a block I fixedly disposed on the outer side of the lower end face of the pipe jacking head body, a column groove I opened in the middle of the block I, a circular body rotatably disposed inside the column groove I, an inner semi-circular cutter I fixedly disposed on the right side of the outer end face of the circular body, a long heavy-duty cutter fixedly disposed on the left end face of the inner semi-circular cutter I, and the long heavy-duty cutter rotates in the middle of the outer side of the circular body, and an inner semi-circular cutter II fixedly disposed on the left end face of the long heavy-duty cutter, and the inner semi-circular cutter II rotates on the left side of the outer end face of the circular body.

[0008] Preferably, the left end face of the circular body is provided with a second square block, the inside of the second square block is provided with a second column groove, and the left side of the circular body rotates inside the second column groove. The lower end face of the jacking machine head body is provided with an inner groove, and the inner groove is located on the upper side of the long heavy-duty roller cutter.

[0009] By adopting the above technical solution, rolling cutting can be performed.

[0010] Preferably, a long groove is provided in the middle of both the front and rear sides of the lower end face of the pipe jacking machine head body, and a circular groove is provided on the left side of the inner end face of the long groove, with a column rotatably provided in the middle of the circular groove.

[0011] By adopting the above technical solution, the entire structure can be rotated.

[0012] Preferably, a circular groove is provided on the right side of the elongated groove, and the right side of the column rotates inside the circular groove. A small hobbing cutter is fixedly provided around the outer side of the column.

[0013] By adopting the above technical solution, cutting can be performed.

[0014] Preferably, short baffles are fixedly provided on both sides of the interior of the long groove, and the short baffles have grooves inside, with the grooves extending below the small hobbing cutter.

[0015] By adopting the above technical solutions, it is possible to prevent stones from entering.

[0016] Preferably, the pipe jacking head body has an elongated groove in the middle, an elongated baffle is fixedly provided on the inner end face of the elongated groove, the elongated baffle has a groove inside, the lower end face of the pipe jacking head body is provided with an axial cutter, and there are several axial cutters. The outer periphery of the pipe jacking head body is provided with trapezoidal cutters.

[0017] By adopting the above technical solution, it is possible to crush stones.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model uses a long heavy-duty roller cutter and an inner semi-circular roller cutter to prevent the cutting tool from breaking stones of different sizes. It can also prevent the stones from getting stuck in the cutter after being cut into small pieces, thus avoiding the need to replace and repair the cutter, which would be time-consuming, labor-intensive, and affect work efficiency and profits.

[0020] 2. This utility model uses long baffles and short baffles, along with a small roller cutter, to prevent stone fragments from entering the small roller cutter when cutting stones. This increases the service life of the cutter and reduces the hassle of cutting the cutter, thereby increasing work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the novel mounting structure for the utility model of a long, heavy-duty hobbing cutter.

[0023] Figure 3 This is a schematic diagram of the novel installation structure of the long slot in this utility model;

[0024] Figure 4 This is a schematic diagram of the installation structure of the small hobbing cutter of this utility model.

[0025] In the diagram: 1. Pipe jacking machine head body; 2. Trapezoidal cutter; 3. Long groove; 4. Long baffle; 5. Axial cutter; 6. Block 1; 7. Inner semi-circular roller cutter 1; 8. Long heavy-duty roller cutter; 9. Inner groove; 10. Small roller cutter; 11. Circular body; 12. Column groove 1; 13. Column; 14. Circular groove 1; 15. Inner semi-circular roller cutter 2; 16. Long groove; 17. Circular groove 2; 18. Groove; 19. Block 2; 20. Column groove 2; 21. Short baffle. Detailed Implementation

[0026] 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.

[0027] The following describes an embodiment of this utility model based on its overall structure.

[0028] like Figures 1 to 4 As shown, this utility model provides an improved pipe jacking head suitable for backfilled rock formations. It includes a block 6 fixedly mounted on the outer side of the lower end face of the pipe jacking head body 1 for a fixing function. A column groove 12 is opened in the middle of the block 6. A circular body 11 is rotatably mounted inside the column groove 12 for a rotating whole function. An inner semi-circular cutter 7 is fixedly mounted on the right side of the outer end face of the circular body 11 for a rolling cutting function. A long heavy-duty cutter 8 is fixedly mounted on the left end face of the inner semi-circular cutter 7, and the long heavy-duty cutter 8 rotates in the middle of the outer side of the circular body 11 for a rotating whole function. An inner semi-circular cutter 2 15 is fixedly mounted on the left end face of the long heavy-duty cutter 8, and the inner semi-circular cutter 2 15 rotates on the left side of the outer end face of the circular body 11.

[0029] The left end face of the circular body 11 is provided with a square block 19 for fixing. The inside of the square block 19 is provided with a column groove 20, and the left side of the circular body 11 rotates inside the column groove 20. The lower end face of the jacking machine head body 1 is provided with an inner groove 9, and the inner groove 9 is located on the upper side of the long heavy-duty hobbing cutter 8.

[0030] The lower end of the pipe jacking machine head body 1 has a long groove 3 on both the front and rear sides. The inner end face of the long groove 3 has a circular groove 14 on the left side. A column 13 is rotatably installed in the middle of the circular groove 14 to play a rotational role.

[0031] The right side of the elongated groove 3 is provided with a circular groove 2 17, and the right side of the column 13 rotates inside the circular groove 2 17. A small hob cutter 10 is fixed around the outside of the column 13 to perform a rotating cutting function.

[0032] Both sides of the long groove 3 are fixedly provided with short baffles 21 to block the gravel. The short baffles 21 have grooves 18 inside, and the grooves 18 are located below the small hobbing cutter 10.

[0033] The pipe jacking head body 1 has an elongated groove 16 in the middle. An elongated baffle 4 is fixed on the inner end face of the elongated groove 16. A groove 18 is opened inside the elongated baffle 4. An axial cutter 5 is provided on the lower end face of the pipe jacking head body 1. Several axial cutters 5 are provided. A trapezoidal cutter 2 is provided on the outer periphery of the pipe jacking head body 1 to perform a cutting function.

[0034] The working principle and process of an improved pipe jacking head suitable for backfilled rock strata:

[0035] We set several trapezoidal cutters 2 around the outer perimeter of the pipe jacking head body 1 to cut the stones. Then, we set an axial cutter 5 on the lower side of the pipe jacking head body 1 to cut the stones subsequently cut by the trapezoidal cutters 2. To facilitate the cutting of stones, we opened a long groove 3 and long grooves 16 on the front and rear sides of the lower end face of the pipe jacking head body 1 to install small roller cutters 10 for stone cutting. To facilitate the cutting of different stones, we fixedly set a block 1 6 and a block 2 19 on the lower end face of the pipe jacking head body 1. We opened a column groove 12 and a column groove 20 in the middle of them and set a circular body 11 for internal rotation. We set a long heavy-duty roller cutter 8 in the middle of the circular body 11 to cut large stones. To prevent small stones from clogging the cutter, we fixedly set an inner semi-circular roller cutter 7 and an inner semi-circular roller cutter 2 15 on the left and right sides of the circular body 11 to cut the subsequent small stones.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved pipe jacking head suitable for backfilled rock formations, comprising a pipe jacking head body (1), characterized in that: A block 1 (6) is fixedly provided on the outer side of the lower end face of the jacking machine head body (1). A column groove 1 (12) is provided in the middle of the block 1 (6). A circular body (11) is rotatably provided inside the column groove 1 (12). An inner semi-circular cutter 1 (7) is fixedly provided on the right side of the outer end face of the circular body (11). A long heavy-duty cutter (8) is fixedly provided on the left end face of the inner semi-circular cutter 1 (7). The long heavy-duty cutter (8) rotates in the middle of the outer side of the circular body (11). An inner semi-circular cutter 2 (15) is fixedly provided on the left end face of the long heavy-duty cutter (8). The inner semi-circular cutter 2 (15) rotates on the left side of the outer end face of the circular body (11).

2. The improved pipe jacking head suitable for backfilled rock formations according to claim 1, characterized in that: The left end face of the circular body (11) is provided with a square two (19), and the inside of the square two (19) is provided with a column groove two (20). The left side of the circular body (11) rotates inside the column groove two (20). The lower end face of the jacking machine head body (1) is provided with an inner groove (9), and the inner groove (9) is located on the upper side of the long heavy-duty hobbing cutter (8).

3. The improved pipe jacking head suitable for backfilled rock formations according to claim 1, characterized in that: The lower end of the pipe jacking machine head body (1) is provided with a long groove (3) on both the front and rear sides. A circular groove (14) is provided on the left side of the inner end face of the long groove (3). A column (13) is rotatably provided in the middle of the circular groove (14).

4. An improved pipe jacking head suitable for backfilled rock formations according to claim 3, characterized in that: The elongated groove (3) has a circular groove two (17) on the right side inside, and the right side of the column (13) rotates inside the circular groove two (17). A small hobbing cutter (10) is fixedly provided around the outer side of the column (13).

5. An improved pipe jacking head suitable for backfilled rock formations according to claim 3, characterized in that: Both sides of the long groove (3) are fixedly provided with short baffles (21), and the short baffles (21) have grooves (18) inside, and the grooves (18) are located below the small hob (10).

6. An improved pipe jacking head suitable for backfilled rock formations according to claim 1, characterized in that: The pipe jacking head body (1) has an elongated groove (16) in the middle. An elongated baffle (4) is fixedly provided on the inner end face of the elongated groove (16). A groove (18) is provided inside the elongated baffle (4). An axial cutter (5) is provided on the lower end face of the pipe jacking head body (1). There are several axial cutters (5). A trapezoidal cutter (2) is provided on all four sides of the outer side of the pipe jacking head body (1).

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