Cutter head and cutter structure of shield tunneling machine

Abstract

The utility model provides a shield tunneling machine cutterhead and cutter structure, and relates to the technical field of shield tunneling machine cutters, the shield tunneling machine cutterhead comprises a cutterhead main body, the cutterhead main body is provided with a plurality of auxiliary beams and a plurality of main beams, reinforcing parts are arranged between the auxiliary beams and the main beams, and the reinforcing parts are used for reinforcing the auxiliary beams and the main beams. The reinforcing parts are arranged between the auxiliary beams and the main beams, the overall rigidity of the cutterhead is effectively enhanced through the additional arrangement of the reinforcing parts, the cutterhead can keep better stability under complex geological conditions, and the risks of deformation and damage are reduced; by improving the rigidity of the cutterhead, cutter abrasion caused by vibration and deformation can be reduced, so that the service life of the cutter and the cutterhead is prolonged, and the replacement frequency and cost are reduced; the stable cutterhead can ensure that the shield tunneling machine keeps an efficient and stable operation state in the tunneling process, and the tunneling speed and the construction efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine cutters, in particular to a shield machine cutterhead and a cutter structure. Background Art

[0002] In the field of underground engineering construction, shield machines, as efficient and safe tunnel boring equipment, are widely used in projects such as subways, highway tunnels, and water conservancy culverts. One of the core components of a shield machine is the cutterhead, which is directly responsible for crushing and excavating the rock and soil in front of it, providing the necessary space for the shield machine's continuous excavation. Therefore, the performance of the cutterhead, especially its stability and durability, has a crucial impact on the overall operating efficiency of the shield machine and the quality of the project.

[0003] As underground engineering construction continues to deepen, the geological conditions faced by shield machines are becoming increasingly complex and varied. From soft soil to hard rock, and even complex strata rich in water, sand, and pebbles, these conditions pose greater challenges to cutterhead design. Traditional shield machine cutterhead designs, while meeting basic tunneling requirements to a certain extent, often suffer from insufficient rigidity and susceptibility to damage when faced with high-strength, high-wear geological conditions. These problems not only increase shield machine maintenance costs, but can also slow down tunneling speeds and even affect construction safety. Therefore, we have made improvements to this problem and proposed a shield machine cutterhead and tool structure. Utility Model Content

[0004] The purpose of the utility model is to solve the problems that the cutter head of the conventional shield machine is insufficient in rigidity and easy to be damaged.

[0005] In order to achieve the above-mentioned purpose of the invention, the utility model provides a shield machine cutterhead and tool structure to improve the above-mentioned problems.

[0006] The specific application is as follows:

[0007] A shield machine cutterhead comprises a cutterhead body, wherein the cutterhead body is provided with a plurality of auxiliary beams and a plurality of main beams, and reinforcement parts are provided between the plurality of auxiliary beams and the plurality of main beams, and the reinforcement parts are used for reinforcing the auxiliary beams and the main beams.

[0008] As a preferred technical solution of the present application, the reinforcement portion includes a plurality of first reinforcement ribs, which are fixedly connected between the auxiliary beam and the main beam.

[0009] As a preferred technical solution of the present application, the reinforcement portion further includes a plurality of second reinforcement ribs, which are fixedly connected between the auxiliary beam and the main beam.

[0010] As a preferred technical solution of the present application, a transmission part is provided on the back of the cutterhead body, and the transmission part is used to connect with the shield machine drive system to drive the cutterhead body to operate.

[0011] As a preferred technical solution of the present application, the transmission part includes a connecting plate located on the back of the cutter disc body, and a plurality of connecting frames are fixedly connected between the connecting plate and the cutter disc body.

[0012] As a preferred technical solution of the present application, a cooling portion is provided between the second reinforcing rib and the cutter disc body.

[0013] As a preferred technical solution of the present application, the cooling portion includes a chamber arranged between the cutter disc body and the second reinforcing rib, and a nozzle connected to the chamber is provided on the second reinforcing rib.

[0014] As a preferred technical solution of the present application, a delivery pipe is further connected to the cutter head body, and the delivery pipe is connected to the chamber.

[0015] A shield machine cutter structure uses a shield machine cutter head and also includes a first cutter and a second cutter installed on a main beam and a fifth cutter installed on a secondary beam.

[0016] A third cutter is also installed on the main beam, and a fourth cutter is installed on the outer peripheral side of the cutter head body. The outer surfaces of the first cutter, the second cutter, the third cutter and the fourth cutter are all provided with a wear-resistant coating.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the scheme of this application:

[0019] In order to solve the problem of insufficient rigidity and easy damage of the shield machine cutterhead in the prior art, the present application sets a reinforcement part between the auxiliary beam and the main beam. The addition of the reinforcement part effectively enhances the overall rigidity of the cutterhead, so that it can maintain better stability when facing complex geological conditions and reduce the risk of deformation and damage; by increasing the rigidity of the cutterhead, the tool wear caused by vibration and deformation can be reduced, thereby extending the service life of the tool and cutterhead, and reducing the replacement frequency and cost; a stable cutterhead can ensure that the shield machine maintains an efficient and stable operating state during the excavation process, thereby improving the excavation speed and construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the shield machine cutterhead and tool structure provided for this application;

[0021] Figure 2 This is a schematic diagram of the front view of the shield machine cutterhead and tool structure provided in this application;

[0022] Figure 3A schematic diagram of the structure of the shield machine cutterhead and the connecting plate and connecting frame of the tool structure provided in this application;

[0023] Figure 4 This is a side view structural diagram of the shield machine cutterhead and tool structure provided in this application.

[0024] Indicated in the figure:

[0025] 1. Cutterhead body; 101. Subbeam; 102. Main beam; 103. First reinforcement rib; 104. Second reinforcement rib;

[0026] 2, first tool; 201, second tool; 202, third tool; 203, fourth tool; 205, fifth tool;

[0027] 3. Nozzle; 301. Delivery pipe;

[0028] 4. Connecting plate; 401. Connecting frame. DETAILED DESCRIPTION

[0029] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0030] As recorded in the background technology, with the continuous deepening of underground engineering construction, the geological conditions faced by shield machines are becoming increasingly complex and changeable. From soft soil layers to hard rocks, and even complex strata rich in water, sand, and pebbles, all pose higher challenges to the design of the cutterhead. Although the traditional shield machine cutterhead design meets the basic excavation needs to a certain extent, when faced with high-strength and high-wear geological conditions, it often exposes problems of insufficient rigidity and easy damage. These problems not only increase the maintenance cost of the shield machine, but may also lead to a slowdown in excavation speed and even affect construction safety.

[0031] In order to solve this technical problem, the utility model provides a shield machine cutterhead and tool structure.

[0032] Specifically, please refer to Figure 1-Figure 2 , the shield machine cutterhead specifically includes:

[0033] The cutterhead body 1 is provided with a plurality of sub-beams 101 and a plurality of main beams 102 . Reinforcement parts are provided between the plurality of sub-beams 101 and the plurality of main beams 102 . The reinforcement parts are used to strengthen the gap between the sub-beams 101 and the main beams 102 .

[0034] The shield machine cutterhead and tool structure provided by the present invention, the present application arranges a reinforcement part between the auxiliary beam 101 and the main beam 102, and the addition of the reinforcement part effectively enhances the overall rigidity of the cutterhead, so that it can maintain better stability when facing complex geological conditions, and reduce the risk of deformation and damage; by improving the rigidity of the cutterhead, it can reduce tool wear caused by vibration and deformation, thereby extending the service life of the tool and cutterhead, and reducing the replacement frequency and cost; the stable cutterhead can ensure that the shield machine maintains an efficient and stable operating state during the excavation process, thereby improving the excavation speed and construction efficiency.

[0035] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0038] Example 1, please refer to Figure 1-Figure 2 A shield machine cutterhead includes a cutterhead body 1, on which are arranged several sub-beams 101 and several main beams 102, and reinforcement parts are arranged between the several sub-beams 101 and the several main beams 102, and the reinforcement parts are used to strengthen the relationship between the sub-beams 101 and the main beams 102. In this application, by arranging reinforcement parts between the sub-beams 101 and the main beams 102, the addition of reinforcement parts effectively enhances the overall stiffness of the cutterhead, so that it can maintain better stability when facing complex geological conditions and reduce the risk of deformation and damage; by increasing the stiffness of the cutterhead, the tool wear caused by vibration and deformation can be reduced, thereby extending the service life of the tool and cutterhead, and reducing the replacement frequency and cost; a stable cutterhead can ensure that the shield machine maintains an efficient and stable operating state during the excavation process, thereby improving the excavation speed and construction efficiency.

[0039] Further, such as Figure 1As shown, the reinforcement portion includes a plurality of first reinforcing ribs 103, which are fixedly connected between the sub-beam 101 and the main beam 102, further enhancing the strength and rigidity of the connection between the sub-beam 101 and the main beam 102, so that the connection can better withstand forces from different directions, reduce stress concentration and fatigue damage at the connection, thereby improving the overall reliability of the cutter head and extending the service life of the cutter head; the design of the first reinforcing ribs 103 specifically strengthens the connection area between the sub-beam 101 and the main beam 102, which are usually areas where the forces are more complex and concentrated. The presence of the first reinforcing ribs 103 can effectively disperse the stress and prevent structural damage caused by local overload.

[0040] Further, such as Figure 1 and Figure 2 As shown, the reinforcement portion also includes a plurality of second reinforcement ribs 104, which are fixedly connected between the auxiliary beam 101 and the main beam 102. The added second reinforcement ribs 104 cooperate with the first reinforcement ribs 103 to form a more stable reinforcement system. They work together to enhance the overall structural strength of the cutterhead, enabling it to adapt to more severe and complex excavation conditions; this helps to improve the accuracy and efficiency of excavation and reduce errors and repetitive work caused by deformation of the cutterhead.

[0041] Further, such as Figure 3 As shown, a transmission part is provided on the back of the cutter head body 1, and the transmission part is used to connect with the shield machine drive system to drive the cutter head body 1 to operate.

[0042] Further, such as Figure 3 As shown, the transmission part includes a connecting plate 4 located on the back of the cutter disc body 1, and a number of connecting frames 401 are fixedly connected between the connecting plate 4 and the cutter disc body 1. The design of the connecting plate 4 and the connecting frame 401 forms a solid connection system, which can effectively resist various forces and vibrations during the transmission process. Their synergistic effect ensures a tight connection between the cutter disc and the drive system, reducing power loss and equipment failure caused by connection problems.

[0043] Example 2 further optimizes the shield machine cutterhead provided in Example 1. Specifically, a cooling part is provided between the second reinforcement rib 104 and the cutterhead body 1, which effectively reduces the temperature of the cutterhead and the tool during operation and significantly reduces the thermal deformation and thermal wear caused by high temperature. This enables the cutterhead and the tool to maintain a good shape and cutting performance during long-term excavation work, thereby extending their service life. At the same time, the lower operating temperature can also improve the strength and hardness of the cutterhead and tool materials, further enhancing their wear resistance and fatigue resistance. During the excavation of the shield machine, the friction between the cutterhead and the tool and the rock will generate a large amount of heat. If it cannot be dissipated in time, it will lead to a decrease in material performance and structural deformation. The setting of the cooling part can quickly take away the heat and keep the cutterhead and the tool working within a suitable temperature range, thereby improving their reliability and durability.

[0044] Further, such as Figure 2 As shown, the cooling part includes a chamber arranged between the cutter head body 1 and the second reinforcing rib 104, and a nozzle 3 connected to the chamber is provided on the second reinforcing rib 104. The nozzle 3 is used to spray coolant to cool the tool in real time during the excavation process and reduce the speed of the tool wear due to high temperature.

[0045] Further, such as Figure 3 As shown, the cutter disc body 1 is also connected to a delivery pipe 301, which is connected to the chamber. The existence of the delivery pipe 103 provides a smooth passage for the coolant from the external source to the chamber inside the cutter disc, ensuring the stability of the flow and pressure of the coolant, so that the cooling system can work stably for a long time.

[0046] Example 3, please refer to Figure 1-3 A shield machine tool structure uses a shield machine cutter head and also includes a first tool 2 and a second tool 201 installed on the main beam 102 and a fifth tool 205 installed on the secondary beam 101.

[0047] Further, such as Figure 2 As shown, a third cutter 202 is further mounted on the main beam 102, and a fourth cutter 203 is mounted on the outer periphery of the cutterhead body 1. The outer surfaces of the first cutter 2, the second cutter 201, the third cutter 202, and the fourth cutter 203 are all provided with a wear-resistant coating. During the excavation process, the cutters at different positions undertake different cutting tasks. A reasonable arrangement enables them to work together to more efficiently crush rock and soil, reduce excavation resistance, and increase excavation speed.

[0048] The intense friction between the tool and rocks and other materials will cause wear on the tool surface. The presence of the wear-resistant coating forms a hard protective film that can resist wear and scratches, maintain the sharpness and cutting ability of the tool, and at the same time, wear-resistant coatings are set on tools in different positions to ensure the durability and stability of the entire tool system; the wear-resistant coating can be tungsten carbide coating or titanium nitride coating; tungsten carbide coating has extremely high hardness and wear resistance, and can effectively resist wear and impact during the cutting process. When tungsten carbide coating is used on shield machine tools, when the tool breaks hard rock, the coating can withstand the friction and impact of the rock and reduce the wear of the tool body; titanium nitride coating has good hardness, wear resistance and high temperature resistance. In the high temperature and high friction tunneling environment, titanium nitride coating can maintain its stable performance and prevent the tool from rapid wear due to high temperature.

[0049] The use process of the shield machine cutterhead and tool structure provided by the utility model is as follows:

[0050] The connecting disc 4 is connected to the drive system of the shield machine. The drive system drives the cutter head body 1 to rotate through the connecting disc 4 and the connecting frame 401, thereby causing the tool structure to advance. During this process, the delivery pipe 301 delivers cooling liquid into the chamber, and the cooling liquid is sprayed out by the nozzle 3 to cool the tool structure.

[0051] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0052] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the present invention patent.

Claims

1. A shield machine cutterhead, characterized in that: The cutterhead comprises a main body (1), wherein a plurality of auxiliary beams (101) and a plurality of main beams (102) are provided on the main body (1), and a reinforcement portion is provided between the plurality of auxiliary beams (101) and the plurality of main beams (102), and the reinforcement portion is used to reinforce the auxiliary beams (101) and the main beams (102); The reinforcement portion comprises a plurality of first reinforcement ribs (103), wherein the first reinforcement ribs (103) are fixedly connected between the auxiliary beam (101) and the main beam (102); The reinforcement portion further comprises a plurality of second reinforcement ribs (104), wherein the second reinforcement ribs (104) are fixedly connected between the auxiliary beam (101) and the main beam (102); A cooling portion is provided between the second reinforcing rib (104) and the cutter head body (1); The cooling portion comprises a chamber arranged between the cutter head body (1) and the second reinforcing rib (104), and a nozzle (3) communicating with the chamber is provided on the second reinforcing rib (104); The cutter head body (1) is also connected to a delivery pipe (301), and the delivery pipe (301) is connected to the chamber.

2. A shield machine cutterhead according to claim 1, characterized in that: A transmission part is provided on the back of the cutterhead body (1), and the transmission part is used to be connected to the shield machine drive system to drive the cutterhead body (1) to operate.

3. A shield machine cutterhead according to claim 2, characterized in that: The transmission part comprises a connecting disk (4) located on the back of the cutter disc body (1), and a plurality of connecting frames (401) are fixedly connected between the connecting disk (4) and the cutter disc body (1).

4. A shield machine cutter structure, using the shield machine cutter head according to any one of claims 1 to 3, characterized in that: It also includes a first tool (2) and a second tool (201) installed on the main beam (102), and a fifth tool (205) installed on the auxiliary beam (101).

5. A shield machine cutter structure according to claim 4, characterized in that: A third cutter (202) is also installed on the main beam (102), a fourth cutter (203) is installed on the outer peripheral side of the cutter head body (1), and outer surfaces of the first cutter (2), the second cutter (201), the third cutter (202), and the fourth cutter (203) are all provided with a wear-resistant coating.

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