A cutterhead for an earth pressure balance pipe jacking machine

Abstract

This utility model discloses a cutterhead for an earth pressure balance pipe jacking machine, relating to the technical field of pipe jacking construction equipment. It includes a disc body, with a first cutter detachably connected to the edge of the disc body. The first cutter has toothed grooves on both sides. A third cutter is detachably connected to one side of the first cutter via the toothed grooves, and a filler block is detachably connected to the other side of the first cutter via the toothed grooves. By detachably connecting the disc body, the first cutter, and the connecting block, and by detachably connecting the first cutter, the third cutter, and the filler block via the toothed grooves, this utility model makes the installation, replacement, and maintenance of each component more convenient, effectively reducing maintenance costs and time. It solves the problems of difficult cutterhead component replacement and low maintenance efficiency in the prior art. Simultaneously, the filler block can be flexibly replaced according to actual working conditions, greatly enhancing the adaptability of the cutterhead to different geological formations and improving the equipment's versatility.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking construction equipment technology, and in particular to a cutterhead for an earth pressure balance pipe jacking machine. Background Technology

[0002] The cutterhead of an earth pressure balance pipe jacking machine is a key component of the machine, mainly used to cut the soil and maintain the soil balance within the soil chamber.

[0003] However, in the existing technology, most of the components of the cutterhead are fixedly connected. When the cutter wears out or needs to be replaced according to different strata, the disassembly and installation process is cumbersome, with high maintenance costs and low efficiency. At the same time, the positioning accuracy of the cutter is insufficient during installation, and it is easy to shift due to vibration during cutting operations, resulting in poor cutting stability, large soil disturbance, and affecting construction efficiency and safety. In addition, it has weak adaptability to different strata and is difficult to meet the needs of complex construction conditions. Utility Model Content

[0004] The purpose of this invention is to solve the problems of inconvenient replacement and maintenance of cutterhead components, inaccurate cutter positioning, poor cutting stability, and weak adaptability to different strata in the existing technology, and to propose a cutterhead for an earth pressure balance pipe jacking machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cutterhead for an earth pressure balance pipe jacking machine, comprising a disc body, a first cutter detachably connected to the edge of the disc body, toothed grooves on both sides of the first cutter, a third cutter detachably connected to one side of the first cutter via the toothed groove, and a filling block detachably connected to the other side of the first cutter via the toothed groove.

[0006] Preferably, a connecting block is detachably connected to the center of the disc body, and an interface is fixedly installed inside the connecting block.

[0007] Preferably, a second cutting tool and a limiting protrusion are also fixedly installed at the edge of the connecting block, and the second cutting tool and the limiting protrusion are staggered at the eight equal division points of the connecting block.

[0008] Preferably, a protrusion is fixedly installed on one side edge of the upper surface of the second tool.

[0009] Preferably, an extension is fixedly installed on the other side edge of the upper surface of the second cutter.

[0010] Preferably, a positioning groove is provided at the junction of the disc body and the limiting protrusion.

[0011] Preferably, a receiving groove is provided at the junction of the disc body and the second cutter, and a notch is provided at the junction of the receiving groove and the extension.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by detachably connecting the disc body with the first cutter and the connecting block, and by detachably connecting the first cutter with the third cutter and the filling block through the tooth groove, the installation, replacement and maintenance of each component are made more convenient, effectively reducing maintenance costs and time, solving the problems of difficult replacement of cutter disc components and low maintenance efficiency in the prior art. At the same time, the filling block can be flexibly replaced according to the actual working conditions, greatly enhancing the adaptability of the cutter disc to different formations and improving the versatility of the equipment.

[0013] 2. In this utility model, by setting a protrusion on the second cutter to enhance the cutting and crushing ability, and by setting an extension to match the receiving groove and notch of the disc body to achieve precise positioning, and by cooperating with the positioning groove of the disc body and the limiting protrusion of the connecting block to limit the positioning, not only is the cutting efficiency and installation stability of the second cutter improved, but also the soil disturbance during cutting is effectively reduced, and the components are prevented from shifting due to vibration. This solves the problems of inaccurate tool positioning and poor cutting stability in the prior art, and ensures efficient and stable construction. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the cutterhead of an earth pressure balance pipe jacking machine proposed in this utility model; Figure 2 This is a schematic diagram of the planar structure of the cutterhead of an earth pressure balance pipe jacking machine proposed in this utility model; Figure 3 This is a three-dimensional structural diagram of the connecting block of the cutterhead of an earth pressure balance pipe jacking machine proposed in this utility model; Figure 4 This is a three-dimensional structural diagram of the cutterhead of an earth pressure balance pipe jacking machine proposed in this utility model.

[0015] Legend: 1. Disc body; 2. First cutter; 3. Connecting block; 4. Interface; 5. Second cutter; 6. Filler block; 7. Third cutter; 8. Protrusion; 9. Extension; 10. Limiting protrusion; 11. Receiving groove; 12. Notch; 13. Positioning groove; 14. Tooth groove. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a cutterhead for an earth pressure balance pipe jacking machine, including a disc body 1. A first cutter 2 is detachably connected to the edge of the disc body 1. The first cutter 2 has toothed grooves 14 on both sides. A third cutter 7 is detachably connected to one side of the first cutter 2 through the toothed groove 14. A filling block 6 is detachably connected to the other side of the first cutter 2 through the toothed groove 14. A connecting block 3 is detachably connected to the center of the disc body 1. An interface 4 is fixedly installed inside the connecting block 3. A second cutter 5 and a limiting protrusion 10 are also fixedly installed on the edge of the connecting block 3. The second cutter 5 and the limiting protrusion 10 are staggered at eight equal division points of the connecting block 3.

[0019] The specific settings and functions of this embodiment are described below. The disc body 1 serves as the main structure. The first cutter 2 at the edge performs the main cutting operation when the cutter head rotates. The first cutter 2 is connected to a third cutter 7 and a filler block 6 on both sides via toothed grooves 14. The third cutter 7 assists the first cutter 2 in enhancing the cutting effect, while the filler block 6 fills the space to ensure cutting stability. The connecting block 3 at the center of the disc body 1 is connected to the drive system via an interface 4, driving the entire cutter head to rotate. Second cutters 5 and limiting protrusions 10 are staggered at eight equal division points along the edge of the connecting block 3. The second cutters 5 cut the soil in the central area, while the limiting protrusions 10 limit the soil movement during the cutting process. To prevent excessive soil displacement, all components work together to complete the cutting operation on the soil. The disc body 1, the first cutter 2, and the connecting block 3 are all detachably connected. The first cutter 2, the third cutter 7, and the filler block 6 are detachably connected through the toothed groove 14, which facilitates the installation, replacement, and maintenance of each component, reducing maintenance costs and time. The combination of the first cutter 2, the second cutter 5, and the third cutter 7 can adapt to the cutting needs of different areas and improve cutting efficiency. The design of the toothed groove 14 makes the installation of the third cutter 7 and the filler block 6 more stable. The limiting protrusion 10 can reduce soil disturbance during cutting and ensure construction stability. The filler block 6 can be flexibly replaced according to the actual working conditions, enhancing the adaptability of the cutter disc to different strata.

[0020] Example 2: Figure 1 , Figure 3 and Figure 4As shown, a protrusion 8 is fixedly installed on one side edge of the upper surface of the second cutter 5, and an extension 9 is fixedly installed on the other side edge of the upper surface of the second cutter 5. A positioning groove 13 is provided at the junction of the disc body 1 and the limiting protrusion 10. A receiving groove 11 is provided at the junction of the disc body 1 and the second cutter 5. A notch 12 is provided at the junction of the receiving groove 11 and the extension 9.

[0021] The overall effect of this embodiment is that the disc body 1 serves as the basic carrier of the cutter head, and the receiving groove 11 on it is used to place the second cutter 5. The protrusion 8 on one side of the upper surface of the second cutter 5 can enhance the crushing ability when cutting soil. The extension 9 on the other side is embedded into the receiving groove 11 during installation and is adapted to the notch 12 at the junction of the receiving groove 11 to achieve initial positioning. At the same time, the positioning groove 13 at the junction of the disc body 1 and the limiting protrusion 10 cooperates with the limiting protrusion 10 on the connecting block 3 to accurately limit the second cutter 5 and surrounding components, ensuring that the position of each component is stable during the rotation of the cutter head to cut the soil. The second cutter 5 completes the soil cutting operation. The protrusion 8 improves the efficiency and crushing effect of the second cutter 5 in cutting the soil, and enhances the cutting ability of the cutter head on the soil. The adaptable structure of the extension 9, the receiving groove 11, and the notch 12 makes the installation of the second cutter 5 on the disc body 1 more convenient and the positioning more accurate, ensuring the overall structural stability of the cutter head. The positioning groove 13 and the limiting protrusion 10 work together to further limit the displacement of the components during operation, avoid the displacement of the components due to vibration, improve the reliability and continuity of the cutter head operation, optimize the soil cutting operation performance of the pipe jacking machine cutter head, and help to carry out pipe jacking construction efficiently.

[0022] The device's operation and working principle are as follows: The disc body 1 serves as the main structure. A detachable first cutter 2 at the edge is connected via toothed grooves 14 on both sides to a third cutter 7 for auxiliary cutting and a filling block 6 for filling space. A detachable connecting block 3 at the center is connected to the drive system via an interface 4. A second cutter 5 and a limiting protrusion 10 are staggered at eight equally spaced points along its edge. On the second cutter 5, a protrusion 8 enhances the crushing capacity, and an extension 9 is embedded in the receiving groove 11 of the disc body 1 and initially positioned by adapting to the notch 12. The positioning groove 13 of the disc body 1 and the limiting protrusion 10 of the connecting block 3 precisely limit the second cutter 5 and surrounding components. During operation, the drive system rotates the cutter head via the interface 4. The first cutter 2 primarily performs edge cutting, while the third cutter 7 assists and the filling block 6 ensures stability. The second cutter 5 cuts the central soil, and the limiting protrusion 10 restricts soil displacement. All components work together to complete soil cutting.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A cutterhead for an earth pressure balance pipe jacking machine, comprising a disc body (1), characterized in that: The first cutter (2) is detachably connected to the edge of the disc (1). The first cutter (2) has toothed grooves (14) on both sides. The third cutter (7) is detachably connected to one side of the first cutter (2) through the toothed groove (14). The filling block (6) is detachably connected to the other side of the first cutter (2) through the toothed groove (14).

2. The earth pressure balance pipe jacking machine cutterhead according to claim 1, characterized in that: The center of the disk body (1) is detachably connected to a connecting block (3), and an interface (4) is fixedly installed inside the connecting block (3).

3. The cutterhead of an earth pressure balance pipe jacking machine according to claim 1, characterized in that: A second cutter (5) and a limiting protrusion (10) are also fixedly installed at the edge of the connecting block (3). The second cutter (5) and the limiting protrusion (10) are staggered at the eight equal division points of the connecting block (3).

4. The cutterhead of an earth pressure balance pipe jacking machine according to claim 1, characterized in that: The second cutter (5) has a protrusion (8) fixedly installed on one side edge of its upper surface.

5. The cutterhead of an earth pressure balance pipe jacking machine according to claim 1, characterized in that: An extension (9) is fixedly installed on the other side edge of the upper surface of the second cutter (5).

6. The cutterhead of an earth pressure balance pipe jacking machine according to claim 1, characterized in that: A positioning groove (13) is provided at the junction of the disc body (1) and the limiting protrusion (10).

7. The cutterhead of an earth pressure balance pipe jacking machine according to claim 1, characterized in that: A receiving groove (11) is provided at the junction of the disc body (1) and the second cutter (5), and a notch (12) is provided at the junction of the receiving groove (11) and the extension (9).

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