A shield tunneling machine spray dust removal device

Abstract

The utility model discloses a shield machine sprays dust removal device, including spray head mechanism and water supply mechanism, spray head mechanism includes butt joint pipe, direct head, plug, fixed seat and nozzle, and the fixed seat is fixed in the front end of shield machine, and the lateral wall on butt joint pipe is equipped with the water outlet joint, and the both ends of direct head are connected with plug and water outlet joint respectively, and nozzle is screwed in direct head, and is close to or stretches out plug and is away from the one end of butt joint pipe, and the middle part of fixed seat is penetrated and has the socket hole, and plug is inserted in socket hole, and the inner wall on the one end of socket hole away from butt joint pipe is equipped with the limit ring, and plug and limit ring abut, and the fixed seat is equipped with the restriction mechanism for limiting plug and pulling out from socket hole, and butt joint pipe is connected with water supply mechanism. This shield machine sprays dust removal device is convenient to replace nozzle, and the dismounting is convenient, and improves construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, specifically to a tunnel boring machine spray dust removal device. Background Technology

[0002] Existing dust removal devices for tunnel boring machines generally include nozzles and a water supply mechanism. The nozzles are welded to the front end of the tunnel boring machine, and the water supply mechanism is connected to the nozzles to supply water to them. The method of fixing the nozzles by welding has the following drawbacks: on the one hand, it is inconvenient to replace them, and on the other hand, it is difficult to disassemble and assemble, which affects the construction efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a shield machine spray dust removal device that is easy to replace nozzles, convenient to disassemble and assemble, and improves construction efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A dust suppression spraying device for a tunnel boring machine (TBM) includes a nozzle mechanism and a water supply mechanism. The nozzle mechanism includes a connecting pipe, a direct head, a plug connector, a fixed base, and a nozzle. The fixed base is fixed to the front end of the TBM. A water outlet connector is provided on the side wall of the connecting pipe. The two ends of the direct head are respectively connected to the plug connector and the water outlet connector. The nozzle is threaded into the direct head and is close to or extends from the end of the plug connector away from the connecting pipe. A socket hole is passed through the middle of the fixed base. The plug connector is inserted into the socket hole. A limiting ring is provided on the inner wall of the socket hole away from the connecting pipe. The plug connector abuts against the limiting ring. A limiting mechanism is provided on the fixed base to prevent the plug connector from being pulled out of the socket hole. The connecting pipe is connected to the water supply mechanism.

[0005] As a further improvement to the above technical solution: The limiting mechanism includes a limiting block and a screwing component. A radial guide hole is provided on the side wall of the socket hole. The limiting block is slidably disposed in the radial guide hole. One end of the screwing component is rotatably connected to the limiting block, and the other end extends out of the fixed seat and is provided with a screwing part. The screwing component is threadedly connected to the fixed seat. A limiting groove is provided on the outer wall of the water outlet connector, and the limiting block is inserted into the limiting groove.

[0006] The bottom surface of the limiting block extending into the limiting groove is an inclined abutment surface that is higher on the outside and lower on the inside, and the lower side surface of the limiting groove is a receiving surface that is lower on the outside and higher on the inside. The inclined abutment surface abuts against the receiving surface.

[0007] The radial guide hole penetrates the side wall of the socket hole, and the fixing seat is provided with a mounting block on the outside of the radial guide hole. The screwing component passes through the mounting block and is threadedly connected to the mounting block.

[0008] Both ends of the mounting block are fixed to the mounting base by fixing bolts.

[0009] The fixing seat abuts against the connecting pipe.

[0010] The limiting mechanism is provided in multiple parts, which are arranged at intervals around the central axis of the fixed seat, and the limiting groove is annular.

[0011] The two ends of the direct connector are respectively inserted into the plug connector and the water outlet connector, and are threadedly connected to the plug connector and the water outlet connector respectively.

[0012] The nozzle mechanism is provided in multiple parts, and the connecting pipes of each nozzle mechanism are connected in series.

[0013] The mounting base is fixed to the inspection door at the front end of the tunnel boring machine.

[0014] Compared with the prior art, the advantages of this utility model are: The shield tunneling machine spray dust removal device of this utility model adopts a plug-in connection method and a welding fixing method, which facilitates nozzle replacement and makes disassembly and assembly convenient, thereby improving construction efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the shield tunneling machine spray dust removal device of this utility model.

[0016] Figure 2 This is a cross-sectional structural schematic diagram of the nozzle mechanism of the shield machine spray dust removal device of this utility model.

[0017] Figure 3 yes Figure 2 A magnified structural diagram of point A in the middle.

[0018] The labels in the diagram represent: 1. Nozzle mechanism; 11. Connecting pipe; 12. Direct connector; 13. Plug connector; 14. Fixing base; 141. Socket hole; 142. Limiting ring; 143. Radial guide hole; 145. Mounting block; 146. Fixing bolt; 15. Nozzle; 16. Water outlet connector; 161. Limiting groove; 162. Abutting surface; 2. Water supply mechanism; 3. Restriction mechanism; 31. Limiting block; 311. Angled abutting surface; 32. Tightening component; 321. Tightening part; 4. Inspection door. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Figures 1 to 3 This invention illustrates an embodiment of the shield tunneling machine spray dust suppression device. The device includes a nozzle mechanism 1 and a water supply mechanism 2. The nozzle mechanism 1 includes a connecting pipe 11, a direct head 12, a plug connector 13, a fixing base 14, and nozzles 15. The fixing base 14 is fixed to the front end of the shield tunneling machine. A water outlet connector 16 is provided on the side wall of the connecting pipe 11. The two ends of the direct head 12 are respectively connected to the plug connector 13 and the water outlet connector 16. The nozzles 15 are threadedly connected. Inside the direct connector 12 and near or extending from the end of the connector 13 away from the connecting pipe 11, the middle of the fixing base 14 has a socket hole 141 through which the connector 13 is inserted. The connector 13 is inserted into the socket hole 141. A limiting ring 142 is provided on the inner wall of the end of the socket hole 141 away from the connecting pipe 11. The connector 13 abuts against the limiting ring 142. The fixing base 14 is provided with a limiting mechanism 3 for preventing the connector 13 from being pulled out of the socket hole 141. The connecting pipe 11 is connected to the water supply mechanism 2.

[0024] The installation process of the nozzle mechanism 1 of the dust suppression spraying device for this tunnel boring machine is as follows: First, thread the nozzle 15 into the direct head 12. Then, connect one end of the direct head 12 to the connector 13 and the other end to the water outlet connector 16, and position the nozzle 15 close to or out of the connector 13 away from the end of the connecting pipe 11. Next, insert the connector 13 into the socket 141 of the fixed base 14 until it abuts against the limiting ring 142. Then, use the limiting mechanism 3 to prevent the connector 13 from being pulled out of the socket 141. Finally, connect the connecting pipe 11 to the water supply mechanism 2. Conversely, the nozzle mechanism 1 can be disassembled. The water supply mechanism 2 is a conventional mechanism including a water pump and a water tank. The water pump draws water from the water tank to the nozzle mechanism 1.

[0025] The replacement process of the nozzle 15 of the dust removal spraying device of this tunnel boring machine is as follows: First, release the restriction function of the restriction mechanism 3, then pull the connector 13 out of the socket 141 of the fixed seat 14, then unscrew the old nozzle 15, replace it with the new nozzle 15, and then insert the connector 13 into the socket 141 of the fixed seat 14.

[0026] This shield tunneling machine spray dust removal device uses a plug-in connection method, which is different from the welding fixing method. On the one hand, it is convenient to replace the nozzle 15, and on the other hand, it is easy to disassemble and assemble, thus improving construction efficiency.

[0027] Furthermore, such as Figure 2 and Figure 3 As shown, in this embodiment, the limiting mechanism 3 includes a limiting block 31 and a screwing component 32. A radial guide hole 143 is provided on the side wall of the socket 141. The limiting block 31 slides in the radial guide hole 143. One end of the screwing component 32 is rotatably connected to the limiting block 31, and the other end extends outside the fixed base 14 and is provided with a screwing portion 321. The screwing component 32 is threadedly connected to the fixed base 14. A limiting groove 161 is provided on the outer wall of the water outlet connector 16, and the limiting block 31 is inserted into the limiting groove 161. By twisting the screwing component 32 in the reverse direction using the screwing portion 321, the limiting block 31 can be pulled out of the limiting groove 161, releasing the limiting mechanism 3 from restricting the connector 13 from being pulled out of the socket 141. Conversely, by twisting the screwing component 32 in the forward direction using the screwing portion 321, the limiting block 31 can be inserted into the limiting groove 161, causing the limiting mechanism 3 to restrict the connector 13 from being pulled out of the socket 141. It has a simple structure and is easy to operate.

[0028] Furthermore, such as Figure 3As shown, in this embodiment, the bottom surface of the limiting block 31 extending into the limiting groove 161 is a sloping abutment surface 311 with an outer higher and inner lower profile (relative to the outer side of the radial guide hole 143 being higher and the inner side being lower). The lower side surface of the limiting groove 161 is a receiving surface 162 with an outer lower and inner higher profile (relative to the outer side of the limiting groove 161 being lower and the inner side being higher). The sloping abutment surface 311 abuts against the receiving surface 162. Thus, during the tightening process of the screwing component 32, the sloping abutment surface 311 exerts a component force on the receiving surface 162 in the direction of the limiting ring 142 to clamp the connector 13 and improve stability.

[0029] Furthermore, in this embodiment, the radial guide hole 143 penetrates the sidewall of the socket hole 141, and the fixing base 14 is provided with a mounting block 145 on the outside of the radial guide hole 143. The screwing component 32 passes through the mounting block 145 and is threadedly connected to the mounting block 145. Specifically, the screwing part 321 is located on the outside of the mounting block 145. Preferably, the radial guide hole 143 extends radially along the socket hole 141, the cross-section of the radial guide hole 143 is polygonal, and the limiting block 31 is adapted to the radial guide hole 143, so that the radial guide hole 143 can restrict the rotation of the limiting block 31.

[0030] Furthermore, in this embodiment, both ends of the mounting block 145 are fixed to the mounting base 14 by fixing bolts 146, which makes disassembly and assembly convenient.

[0031] Furthermore, in this embodiment, the fixing base 14 abuts against the connecting pipe 11, improving the stability of the overall connection. Of course, in other embodiments, the fixing base 14 and the connecting pipe 11 may also be spaced apart.

[0032] Furthermore, in this embodiment, multiple limiting mechanisms 3 are provided, arranged at intervals around the central axis of the fixed base 14, and the limiting groove 161 is annular. The multiple limiting mechanisms 3 restrict the insertion connector 13 from being pulled out of the socket 141, improving the limiting effect. Preferably, the limiting mechanisms 3 are evenly spaced around the central axis of the fixed base 14, providing good symmetry and a better limiting effect.

[0033] Furthermore, in this embodiment, the two ends of the direct connector 12 are respectively inserted into the plug connector 13 and the water outlet connector 16, and are threadedly connected to the plug connector 13 and the water outlet connector 16 respectively, making disassembly and assembly convenient. Preferably, the direct connector 12 has an outwardly protruding ring in the middle, and the circumferential surface of the outwardly protruding ring is polygonal, which facilitates the wrench turning operation. The outwardly protruding ring is sandwiched between the plug connector 13 and the water outlet connector 16.

[0034] Furthermore, in this embodiment, multiple nozzle mechanisms 1 are provided, and the connecting pipes 11 of each nozzle mechanism 1 are connected in series to improve the dust removal effect of spraying.

[0035] Furthermore, in this embodiment, the fixing seat 14 is fixed (e.g., welded) to the inspection door 4 at the front end of the tunnel boring machine.

[0036] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A shield tunneling machine spray dust removal device, comprising a spray head mechanism (1) and a water supply mechanism (2), characterized in that: The nozzle mechanism (1) includes a connecting pipe (11), a direct head (12), a plug connector (13), a fixed base (14), and a nozzle (15). The fixed base (14) is fixed to the front end of the tunnel boring machine. A water outlet connector (16) is provided on the side wall of the connecting pipe (11). The two ends of the direct head (12) are respectively connected to the plug connector (13) and the water outlet connector (16). The nozzle (15) is threaded into the direct head (12) and is close to or extends out of the plug connector (13) away from the connecting pipe (11). One end of the fixed base (14) has a socket hole (141) through the middle of the fixed base (14). The plug (13) is inserted into the socket hole (141). A limiting ring (142) is provided on the inner wall of the end of the socket hole (141) away from the connecting pipe (11). The plug (13) abuts against the limiting ring (142). The fixed base (14) is provided with a limiting mechanism (3) for limiting the plug (13) from being pulled out of the socket hole (141). The connecting pipe (11) is connected to the water supply mechanism (2).

2. The shield tunneling machine spray dust removal device of claim 1, wherein: The limiting mechanism (3) includes a limiting block (31) and a screwing component (32). The side wall of the socket (141) is provided with a radial guide hole (143). The limiting block (31) slides in the radial guide hole (143). One end of the screwing component (32) is rotatably connected to the limiting block (31), and the other end extends to the outside of the fixed seat (14) and is provided with a screwing part (321). The screwing component (32) is threadedly connected to the fixed seat (14). The outer wall of the water outlet connector (16) is provided with a limiting groove (161), and the limiting block (31) is inserted into the limiting groove (161).

3. The shield tunneling machine spray dust removal device of claim 2, wherein: The bottom surface of the limiting block (31) extending into the limiting groove (161) is an inclined abutment surface (311) with the outside higher than the inside, and the lower side surface of the limiting groove (161) is a receiving surface (162) with the outside lower than the inside. The inclined abutment surface (311) abuts against the receiving surface (162).

4. The shield tunneling machine spray dust removal device of claim 2, wherein: The radial guide hole (143) penetrates the side wall of the socket hole (141), and the fixing seat (14) is provided with a mounting block (145) on the outside of the radial guide hole (143). The screwing component (32) passes through the mounting block (145) and is threadedly connected to the mounting block (145).

5. The shield tunneling machine spray dust removal device of claim 4, wherein: The two ends of the mounting block (145) are fixed to the mounting base (14) by fixing bolts (146).

6. The shield tunneling machine spray dust removal device of claim 2, wherein: The fixed seat (14) abuts against the connecting pipe (11).

7. The shield tunneling machine spray dust removal device of claim 2, wherein: The limiting mechanism (3) is provided in multiple ways and is arranged at intervals around the central axis of the fixed seat (14). The limiting groove (161) is annular.

8. The shield tunneling machine spray dusting device of any one of claims 1-7, wherein: The two ends of the direct head (12) are respectively inserted into the plug (13) and the water outlet (16) and are threadedly connected to the plug (13) and the water outlet (16) respectively.

9. The shield spraying dust removal device according to any one of claims 1 to 7, characterized in that: The nozzle mechanism (1) is provided in multiple ways, and the connecting pipes (11) of each nozzle mechanism (1) are connected in series.

10. The shield tunneling machine spray dusting device of any one of claims 1-7, wherein: The mounting base (14) is fixed to the inspection door (4) at the front end of the tunnel boring machine.

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