Shield cutterhead additive injection opening structure
A shield cutter head and injection port technology, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve problems such as wear, additives cannot be injected, and additive injection ports are blocked, achieving anti-blocking wear, simple structure, and avoiding blockages and the effect of wear
Inactive Publication Date: 2015-11-25
CHONGQING TENGHAN IND & TRADE
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- Abstract
- Description
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- Application Information
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Problems solved by technology
When using the existing additive injection port to inject additives, the output port of the additive injection port is in direct contact with the face, and the slag easily enters the additive injection port, causing blockage and wear of the additive injection port, resulting in the failure of the additive to be injected into the face
Method used
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[0013] The present invention will be described in further detail below by means of specific embodiments:
[0014] Such as figure 1 As shown, a shield cutterhead additive injection port structure includes six additive injection ports. The additive injection port includes a connecting pipe 4, and the connecting pipe 4 is threadedly connected with an output valve group, and the output valve group includes a valve seat 1, a poppet valve 3 and a pin shaft 2. The valve seat 1, the cone valve 3 and the pin shaft 2 are connected in sequence. One end of the valve seat 1 is connected to the connecting pipe 4, and the other end of the valve seat 1 is provided with a conical groove 5 that matches the cone valve 3, and there are two holes in the valve seat 1 that connect the connecting pipe 4 and the conical groove 5. The through hole 6. The additive injection port includes four special foam injection ports and two special bentonite injection ports. The special foam injection port and t...
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Abstract
The invention discloses a shield cutterhead additive injection opening structure and belongs to the field of soil pressing shield machines. The shield cutterhead additive injection opening structure comprises six additive injection openings. Each additive injection opening comprises a connection pipe and an output valve set. Each output valve set comprises a valve seat, a cone valve and a pin shaft. One end of each valve seat is connected with the corresponding connection pipe, and the other end of each valve seat is provided with a conical groove matched with the corresponding cone valve. Each valve seat is internally provided with through holes for connecting the corresponding connection pipe and the corresponding conical groove. The end, close to the corresponding connection pipe, of each pin shaft is connected with the corresponding valve seat. The additive injection openings comprise special foam injection openings and special bentonite injection openings. The segment, away from the corresponding connection pipe, of each pin shaft is provided with a limiting block. The shield cutterhead additive injection opening structure is simple in structure, convenient to maintain and capable of effectively preventing blocking and wear to a rubber mat.
Description
technical field [0001] The invention relates to the field of earth pressure shield machines, in particular to the structure of an additive injection port of a shield machine cutter head. Background technique [0002] The shield machine, the full name of the shield tunnel boring machine, is a special construction machine for tunnel boring. The modern shield tunneling machine integrates optical, mechanical, electrical, hydraulic, sensing, and information technologies. It has the functions of excavating and cutting soil, transporting soil residue, assembling tunnel lining, and measuring, guiding, and correcting deviations. The basic working principle of the shield machine is that a cylindrical steel component is pushed forward along the tunnel axis to excavate the soil. The shell of the cylindrical assembly is the shield, which acts as a temporary support for the excavated, unlined tunnel section, withstands the pressure of the surrounding soil and sometimes groundwater pressu...
Claims
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Inventor 丁丽霞
Owner CHONGQING TENGHAN IND & TRADE