Shield tunneling machine cutterhead for complex stratum
By introducing cooling components into the shield machine cutter plate, using coolant real-time cooling nozzles to spray on the blade, the problem of low excavation efficiency caused by blade overheating is solved, and a continuous and efficient excavation process is achieved.
Patent Information
- Application Number
- CN202421730516.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-22
AI Technical Summary
During the excavation process, the blades of the existing shield machine are overheated and need to be stopped to cool down, resulting in low excavation efficiency of the shield machine.
A shield machine cutter plate for complex formations is designed, including a cooling assembly, a water supply cavity, a water supply pipe and a cooling nozzle. The cooling liquid is extracted by starting the water pump and sprayed onto the blade through the cooling nozzle to cool the blade in real time.
It effectively avoids blade overheating, improves the excavation efficiency of the shield machine, and prevents gravel sputtering and blocking of cooling nozzles through anti-blocking components to ensure continuous cooling.
Smart Images
Figure CN222759796U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shield machines, in particular to a shield machine cutter head used for complex strata. Background Art
[0002] The basic working principle of a shield machine is that a cylindrical steel component advances forward along the axis of the tunnel while excavating the soil. The shell of the cylindrical component is the shield, which plays a temporary support role for the excavated tunnel section that has not yet been lined, bearing the pressure of the surrounding soil layers, and sometimes also bearing the groundwater pressure and keeping the groundwater out. Excavation, soil discharge, lining and other operations are carried out under the cover of the shield. The shield machine cutterhead is the tool used by the shield machine for mining.
[0003] In the process of excavation, the existing shield machine cutterhead often overheats the blades on the cutterhead, and it is necessary to stop excavation to cool down the blades on the cutterhead, which leads to low excavation efficiency of the shield machine. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the shortcomings of the prior art, the utility model provides a shield machine cutterhead for complex strata, which has the advantage of real-time cooling of the blades, thereby solving the problem of overheating of the blades on the cutterhead and the need to stop excavation to cool down the blades on the cutterhead, which leads to low excavation efficiency of the shield machine.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a shield machine cutterhead for complex strata, comprising a cutterhead body, wherein the cutterhead body comprises:
[0008] A support plate, one side of which is provided with a support arm;
[0009] A double-edged hobbing blade, arranged on the support arm;
[0010] The support plate is provided with a cooling component, and the cooling component comprises:
[0011] A water delivery cavity is arranged inside the support plate;
[0012] A water delivery pipe, arranged inside the water delivery cavity;
[0013] A cooling nozzle is arranged at one end of the water delivery pipe;
[0014] The anti-blocking component is arranged inside the water delivery cavity.
[0015] In some embodiments, the anti-blocking component includes:
[0016] The first dustproof net is arranged inside the water delivery cavity and is located on one side of the cooling nozzle.
[0017] In some embodiments, a slide plate is disposed on the outer side of the first dustproof net, and a slide groove matching the slide plate is disposed on the inner side wall of the water delivery cavity.
[0018] In some embodiments, fixing bolts are provided on the slide plate so that the slide plate is threadedly connected to the water delivery cavity.
[0019] In some embodiments, a foam spray nozzle is disposed on the outer side of the support arm and passes through the support plate and the support arm. An anti-wear bushing matching the foam spray nozzle is disposed on the support arm and is located on the outer side of the foam spray nozzle.
[0020] In some embodiments, a second dustproof net is provided on the outer side of the foam spray nozzle and is located on one side of the support arm.
[0021] In some embodiments, a single-edged rolling blade is disposed on one side of the support arm and passes through the support arm.
[0022] In some embodiments, a peripheral scraper is provided on the outer side of the support arm.
[0023] (III) Beneficial effects
[0024] Compared with the prior art, the utility model provides a shield machine cutterhead for complex strata, which has the following beneficial effects:
[0025] The cutter head of the shield machine used in complex strata starts a water pump to extract coolant through a water pipe, and continuously sprays the coolant onto the double-edged rolling blade through a cooling nozzle, thereby continuously cooling the double-edged rolling blade that is in excavation work, thereby preventing the blade from overheating during the excavation process of the double-edged rolling blade, and improving the excavation efficiency of the shield machine. While the cooling nozzle continuously sprays coolant onto the rolling blade, an anti-blocking component blocks gravel generated during the excavation of the rolling blade, thereby preventing the gravel from splashing into the water delivery cavity and damaging the water delivery pipe and the cooling nozzle, and simultaneously preventing the gravel from clogging the cooling nozzle, thereby preventing the double-edged rolling blade from being cooled by spraying coolant. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the structure of the utility model;
[0027] Figure 2 It is a schematic diagram of the structure of the utility model from a side view;
[0028] Figure 3 It is a schematic diagram of the structure of the cooling nozzle in the structure of the utility model;
[0029] Figure 4for Figure 2 A magnified schematic diagram of center A.
[0030] In the figure:
[0031] 1. Cutter body; 11. Support plate; 12. Support arm; 13. Double-edged hob; 14. Single-edged hob; 15. Peripheral scraper;
[0032] 2. Cooling component; 21. Bath spray nozzle; 22. Anti-wear bushing; 23. Water pipe; 24. Cooling nozzle; 25. Anti-blocking component; 251. First dust-proof net; 252. Slide plate; 253. Slide groove; 254. Second dust-proof net; 26. Water supply cavity; 27. Fixing bolt. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0034] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0035] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0036] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0037] The basic working principle of a shield machine is that a cylindrical steel component advances forward along the axis of the tunnel while excavating the soil. The shell of the cylindrical component is the shield, which plays a temporary support role for the excavated tunnel section that has not yet been lined, bearing the pressure of the surrounding soil layers, and sometimes also bearing the groundwater pressure and keeping the groundwater out. Excavation, soil discharge, lining and other operations are carried out under the cover of the shield. The shield machine cutterhead is the tool used by the shield machine for mining.
[0038] In the related art, during the excavation process, the shield machine cutterhead often overheats due to the blades on the cutterhead, and it is necessary to stop excavation to cool down the blades on the cutterhead, resulting in low excavation efficiency of the shield machine.
[0039] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a shield machine cutter head for complex strata. When it is needed, it only needs to start the water pump to extract the coolant through the water pipe 23, and continuously spray it onto the double-edged rolling blade 13 through the cooling nozzle 24, so as to continuously cool down the double-edged rolling blade 13 that is excavating, thereby avoiding overheating of the blade during the excavation of the double-edged rolling blade 13, and improving the excavation efficiency of the shield machine. While the cooling nozzle 24 continuously sprays coolant on the double-edged rolling blade 13, the anti-blocking component 25 blocks the gravel generated during the excavation of the double-edged rolling blade 13, thereby avoiding the gravel splashing into the water cavity 26 and damaging the water pipe 23 and the cooling nozzle 24, and at the same time avoiding the gravel blocking the cooling nozzle 24, resulting in the inability to cool the double-edged rolling blade 13 sprayed with coolant.
[0040] The present application is described below with reference to the accompanying drawings and specific embodiments:
[0041] Combination Figure 1-Figure 4 The embodiment of the present application provides a shield machine cutterhead for complex formations, including a cutterhead body 1, the cutterhead body 1 includes: a support arm 12 is arranged on one side of a support plate 11; a double-edged hob blade 13 is arranged on the support arm 12; a cooling component 2 is arranged on the support plate 11, and the cooling component 2 includes: a water supply cavity 26 is arranged inside the support plate 11; a water supply pipe 23 is arranged inside the water supply cavity 26; a cooling nozzle 24 is arranged at one end of the water supply pipe 23; and an anti-blocking component 25 is arranged inside the water supply cavity 26.
[0042] When in use, the drive device of the shield machine drives the cutter head body 1 to rotate, and the rotating cutter head body 1 drives the double-edged rolling blade 13 to rotate for excavation. While the double-edged rolling blade 13 is excavating, the water pump is started, and the coolant is extracted through the water pipe 23, and is continuously sprayed onto the double-edged rolling blade 13 through the cooling nozzle 24, so as to continuously cool down the double-edged rolling blade 13 in the excavation work, thereby avoiding overheating of the blade during the excavation process of the double-edged rolling blade 13, thereby improving the excavation efficiency of the shield machine. While the cooling nozzle 24 continuously sprays the coolant on the double-edged rolling blade 13, the anti-blocking component 25 blocks the gravel generated during the excavation of the double-edged rolling blade 13, thereby avoiding the gravel from splashing into the water supply cavity 26 and damaging the water supply pipe 23 and the cooling nozzle 24, and at the same time avoiding the gravel from clogging the cooling nozzle 24, resulting in the inability to cool the double-edged rolling blade 13 sprayed with coolant.
[0043] Specifically, the drive device of the shield machine directly drives the rotation of the cutterhead through the motor, which has the advantages of simple structure, high precision, and fast response. In the control system, the electric drive method can also achieve precise control of the speed through the frequency converter, which improves the construction efficiency and stability. The principle structure is not drawn in the attached figure.
[0044] In some embodiments, the anti-blocking component 25 includes: a first dust-proof net 251 is arranged inside the water supply cavity 26 and located on one side of the cooling nozzle 24, and the first dust-proof net 251 is used to block the gravel generated when the double-edged rolling blade 13 digs.
[0045] In some embodiments, a slide plate 252 is provided on the outside of the first dustproof net 251, and a slide groove 253 matching the slide plate 252 is provided inside the water supply cavity 26, so that the first dustproof net 251 is slidably connected to the inside of the water supply cavity 26, which facilitates the disassembly and assembly of the first dustproof net 251.
[0046] In some embodiments, a fixing bolt 27 is provided on the slide plate 252, so that the slide plate 252 is threadedly connected to the water delivery cavity 26, which increases the stability of the first dustproof net 251 after installation, and does not affect the convenience of disassembly and assembly of the first dustproof net 251.
[0047] In some embodiments, a bubble agent nozzle 21 is provided on the outside of the support arm 12 and penetrates the support plate 11 and the support arm 12. A wear-resistant bushing 22 matching the bubble agent nozzle 21 is provided on the support arm 12 and is located on the outside of the bubble agent nozzle 21. The bubble agent nozzle 21 is sprayed onto the soil layer to be excavated through the bubble agent generator, and the soil layer is softened and soaked by the bubble agent, thereby reducing the heat generated by the friction between the double-edged rolling blade 13 and the soil layer. At the same time, the bubble agent nozzle 21 is protected by the wear-resistant bushing 22 to prevent the bubble agent nozzle 21 from being damaged by the impact of gravel in the tunnel.
[0048] Specifically, the working principle of the foam generator is to generate foam by mixing air and liquid. Usually, the foam generator has two inlets, one for liquid and the other for air. The liquid is sprayed into the foam generator through the nozzle, and air is input through the air inlet. The liquid and air are mixed to form foam. The principle structure is not drawn in the attached figure.
[0049] In some embodiments, a second dustproof net 254 is provided on one side of the support arm 12 to cooperate with the foam spray nozzle 21 to prevent the foam spray nozzle 21 from being blocked by mud and sand generated when the double-edged rolling blade 13 digs.
[0050] In some embodiments, a single-edged rolling blade 14 is provided on one side of the support arm 12 and penetrates the support arm 12 to assist the double-edged rolling blade 13 in excavation, thereby increasing the excavation speed of the shield machine cutterhead.
[0051] In some embodiments, a peripheral scraper 15 is provided on the outer side of the support arm 12 to increase the excavation efficiency of the cutter head of the shield machine.
[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.
[0053] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A shield machine cutterhead for use in complex strata, comprising a cutterhead body (1), wherein the cutterhead body (1) comprises: A support plate (11) having a support arm (12) disposed on one side thereof; A double-edged rolling blade (13) is arranged on the support arm (12); The feature is that: a cooling component (2) is arranged on the support plate (11), and the cooling component (2) comprises: A water delivery cavity (26) is arranged inside the support plate (11); A water delivery pipe (23) is arranged inside the water delivery cavity (26); A cooling nozzle (24) is arranged at one end of the water delivery pipe (23); An anti-blocking component (25) is arranged inside the water delivery cavity (26).
2. The shield machine cutterhead for complex strata according to claim 1, characterized in that: The anti-blocking component (25) comprises: The first dustproof net (251) is arranged inside the water delivery cavity (26) and is located on one side of the cooling nozzle (24).
3. The shield machine cutterhead for complex strata according to claim 2, characterized in that: A slide plate (252) is arranged on the outer side of the first dustproof net (251), and a slide groove (253) matching the slide plate (252) is arranged on the inner side wall of the water delivery cavity (26).
4. The shield machine cutterhead for complex strata according to claim 3, characterized in that: The slide plate (252) is provided with a fixing bolt (27) so that the slide plate (252) is threadedly connected to the water delivery cavity (26).
5. The shield machine cutterhead for complex strata according to claim 1, characterized in that: A foam spray nozzle (21) is arranged on the outside of the support arm (12) and penetrates the support plate (11) and the support arm (12); an anti-wear bushing (22) matching the foam spray nozzle (21) is arranged on the support arm (12) and is located on the outside of the foam spray nozzle (21).
6. The shield machine cutterhead for complex strata according to claim 5, characterized in that: A second dustproof net (254) is provided on the outer side of the bath agent spray head (21) and is located on one side of the support arm (12).
7. The shield machine cutterhead for complex strata according to claim 1, characterized in that: A single-edged rolling blade (14) is provided on one side of the support arm (12) and passes through the support arm (12).
8. The shield machine cutterhead for complex strata according to claim 7, characterized in that: A peripheral scraper (15) is arranged on the outer side of the support arm (12).