A dual mode shield machine screw conveyor support

Abstract

This utility model relates to the field of dual-mode tunnel boring machine (TBM) technology, and in particular to a screw conveyor support for a dual-mode TBM; it includes a support beam, a support base, a telescopic sleeve, and a connecting seat. The support beam has flange structures at both ends and the bottom. The flanges on both sides are connected to the tunnel segment bridge, and the bottom flange is connected to the support base. The bottom of the support base is equipped with a slide rail, on which the slide plate of the screw conveyor slides. The lugs at both ends of the support base are connected to one end of the telescopic sleeve by pins. The telescopic sleeve is a telescopic structure with lugs at both ends and a length adjustment device. The other end of the telescopic sleeve is connected to the connecting seat by a pin, and the other end of the connecting seat is welded and fixed to the central shield.

Description

Technical Field

[0001] This utility model relates to the field of dual-mode tunnel boring machine technology, and in particular to a screw conveyor support for a dual-mode tunnel boring machine. Background Technology

[0002] A dual-mode tunnel boring machine (TBM) is a tunnel construction machine integrating mechanical, hydraulic, electric, and other technologies. It features two operating modes that can be switched between. In TBM tunnel construction, the TBM is primarily responsible for excavation and support; therefore, the "dual-mode" design allows for the selection of the optimal construction method based on different geological formations and tunnel conditions, thereby improving construction efficiency. The screw conveyor is a crucial component of the dual-mode TBM. In earth pressure balance mode, its rotation transports excavated soil from the excavation chamber to a belt conveyor for transport to the outside of the tunnel. The soil discharge rate can be controlled by adjusting the rotation speed to maintain earth pressure balance.

[0003] Currently, the internal space of dual-mode tunnel boring machines is very compact. The screw conveyor is mostly suspended and fixed by the upper support. However, there are many workpieces in the upper space, and the space is narrow. It is difficult to adjust the angle during installation, resulting in poor stability. Furthermore, when switching modes, the screw conveyor support is very prone to interference with other components such as belt conveyors, which seriously affects construction efficiency.

[0004] Therefore, this utility model provides a dual-mode shield tunneling machine screw conveyor support to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the internal space of existing dual-mode tunnel boring machines is very compact. The screw conveyor is mostly suspended and fixed by the upper support. However, there are many workpieces in the upper space and the space is narrow. It is difficult to adjust the angle during installation, resulting in poor stability. Furthermore, when switching modes, the screw conveyor support is very likely to interfere with other components such as belt conveyors, which seriously affects the construction efficiency.

[0006] This utility model provides the following technical solution: a dual-mode shield machine screw conveyor support, including a support beam, a support base, a telescopic sleeve, and a connecting seat. The support beam has flange structures at both ends and the bottom. The flanges on both sides are connected to the tunnel segment bridge, and the bottom flange is connected to the support base. The bottom of the support base is equipped with a slide rail, on which the slide plate of the screw conveyor slides. The lugs at both ends of the support base are connected to one end of the telescopic sleeve by pins. The telescopic sleeve is a telescopic structure with lugs at both ends and a length adjustment device. The other end of the telescopic sleeve is connected to the connecting seat by a pin, and the other end of the connecting seat is welded and fixed to the central shield.

[0007] Preferably, the flange mounting holes at both ends and the bottom of the supporting beam are elongated holes to facilitate adjustment of the screw conveyor angle. The flanges on both sides are connected to the segment bridge, and the bottom flange is connected to the supporting base.

[0008] Preferably, the length adjustment device includes a fixed seat, a screw, and a nut. The fixed seat has a central threaded hole that is fixed to the inner cylinder of the telescopic sleeve. One end of the screw is screwed into the fixed seat, and the other end presses against the outer cylinder of the telescopic sleeve. The length of the telescopic sleeve is adjusted by adjusting the screw's screwing length, and finally, it is fixed with a nut.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. This utility model provides a dual-mode shield tunneling machine screw conveyor support. The upper space inside the dual-mode shield tunneling machine is compact, and the screw conveyor support is fixed to the lower part of the middle shield. The structure is simple, saves space, improves the construction efficiency of the shield tunneling machine, realizes rapid adjustment and fixation of the screw conveyor installation angle, ensures that the screw conveyor installation angle does not change due to the sliding of the screw conveyor, and provides safe and stable support. Attached Figure Description

[0011] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is an overall structural diagram of the present invention;

[0013] Figure 2 This is an installation diagram of the present invention;

[0014] Figure 3 This is a structural diagram of the supporting beam of this utility model;

[0015] Figure 4 This is a structural diagram of the telescopic sleeve of this utility model.

[0016] In the diagram: 1. Support beam; 2. Support base; 3. Telescopic sleeve; 4. Connecting seat; 5. Middle shield; 6. Segment bridge; 7. Screw conveyor; 11. Gasket; 21. Slide rail; 31. Length adjustment device; 32. Pin; 33. Outer cylinder of telescopic sleeve; 34. Inner cylinder of telescopic sleeve; 311. Fixed seat; 312. Screw; 313. Nut. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for 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.

[0020] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0021] This disclosure aims to address the problem that existing inner packaging requires removing the outer box or damaging the box to display the product during promotional displays, which negatively impacts brand image and results in packaging waste. Existing inner packaging structures are too simple to simultaneously meet the triple requirements of pressure resistance, easy handling, and visual display. Therefore, this disclosure proposes a dual-mode shield tunneling machine screw conveyor support. By combining the left and right side liner plates with the dairy products to form a triangular stable structure, the pressure resistance of the inner liner is significantly improved, effectively protecting the dairy products from damage. Secondly, the coordinated design of the top groove and the fixing groove ensures the stable fixation of the dairy products, preventing displacement or tipping, and enhancing the stability of the packaging and the neatness of the display. Furthermore, the bent design on the inner liner handle allows the handle to bend during packaging to reduce volume, and quickly return to an upright position when needed, facilitating handling and improving packaging flexibility and user experience.

[0022] like Figures 1 to 4 As shown, a dual-mode shield tunneling machine screw conveyor 7 support includes a support beam 1, a support base 2, a telescopic sleeve 3, and a connecting seat 4. The support beam 1 has flange structures at both ends and the bottom. The flanges on both sides are connected to the segment bridge 6, and the bottom flange is connected to the support base 2. The bottom of the support base 2 is equipped with a slide rail 21, on which the slide plate of the screw conveyor 7 slides. The lugs at both ends of the support base 2 are connected to one end of the telescopic sleeve 3 by a pin 32. The telescopic sleeve 3 is a telescopic structure with lugs at both ends and a length adjustment device 31. The other end of the telescopic sleeve 3 is connected to the connecting seat 4 by a pin 32. The other end of the connecting seat 4 is welded and fixed to the central shield 5.

[0023] The flange structure and elongated hole design of the supporting beam 1, combined with the adjustable thickness gasket 11, provide high flexibility for the installation of the screw conveyor 7, allowing for precise adjustment of the position of the supporting beam 1 to ensure the screw conveyor 7 is in the correct working position. Secondly, the telescopic structure and length adjustment device 31 of the telescopic sleeve 3 further enhance the adaptability of the support, allowing for flexible adjustment of the angle of the screw conveyor 7 as needed to adapt to different construction conditions. The slide rail 21 design at the bottom of the support base 2 not only provides stable support for the sliding of the screw conveyor 7 but also ensures the stability of its installation angle during sliding, avoiding angle changes caused by sliding, thereby improving the safety and reliability of construction.

[0024] like Figures 1 to 3As shown, the flange mounting holes at both ends and the bottom of the supporting beam 1 are elongated holes, which facilitates the adjustment of the angle of the screw conveyor 7. The flanges on both sides are connected to the segment bridge 6, and the bottom flange is connected to the supporting base 2. Through the flange structure at both ends and the bottom of the supporting beam 1 and the design of the elongated holes, the angle of the screw conveyor 7 can be flexibly adjusted, while ensuring a stable connection with the segment bridge 6 and the supporting base 2. This not only improves the convenience of installation and adjustment, but also enhances the stability of the support, effectively ensuring the stable operation of the screw conveyor 7 under different working conditions, and significantly improving construction efficiency and reliability.

[0025] like Figures 1 to 2 As shown, the bottom of the support base 2 is equipped with a slide rail 21, on which the slide plate of the screw conveyor 7 slides. The lugs at both ends of the support base 2 are connected to one end of the telescopic sleeve 3 via pins 32. By setting the slide rail 21 at the bottom of the support base 2, the slide plate of the screw conveyor 7 can slide smoothly on the slide rail 21, thus ensuring that the screw conveyor 7 remains stable and does not deviate from the track during movement. Simultaneously, the lugs at both ends of the support base 2 are connected to the telescopic sleeve 3 via pins 32. This connection method not only provides stable support for the telescopic sleeve 3 but also allows the telescopic sleeve 3 to be adjusted within a certain range, further enhancing the flexibility and adaptability of the support. This structural design effectively avoids instability caused by angle changes during the movement of the screw conveyor 7, improving the safety and reliability of construction, while also reducing the risk of malfunctions that may be caused by equipment movement, significantly improving the construction efficiency and stability of the tunnel boring machine under complex working conditions.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the telescopic sleeve 3 is a telescopic structure with lugs at both ends and a length adjustment device 31. The other end of the telescopic sleeve 3 is connected to the connecting seat 4 via a pin 32. The telescopic structure of the telescopic sleeve 3 and the lug design at both ends, combined with the length adjustment device 31, allow the support to flexibly adjust its length according to actual construction needs, thereby adapting to screw conveyors 7 of different sizes and positions. This design not only enhances the versatility and adaptability of the support but also ensures the stability and reliability of the structure through the connection between the pin 32 and the connecting seat 4. By adjusting the length of the telescopic sleeve 3, the angle and position of the screw conveyor 7 can be precisely controlled, further improving the flexibility and accuracy of construction.

[0027] like Figure 4As shown, the length adjustment device 31 includes a fixed base 311, a screw 312, and a nut 313. The fixed base 311 has a central threaded hole that is fixed to the inner cylinder 34 of the telescopic sleeve. One end of the screw 312 is screwed into the fixed base 311, and the other end abuts against the outer cylinder 33 of the telescopic sleeve. The length of the telescopic sleeve 3 is adjusted by adjusting the screw 312's screwing length. Finally, it is fixed with the nut 313. Through the combination of the fixed base 311, the screw 312, and the nut 313, the precise adjustment of the length of the telescopic sleeve 3 is achieved. The central threaded hole of the fixed base 311 is fixed to the inner cylinder 34 of the telescopic sleeve, ensuring the stability of the connection. One end of the screw 312 is screwed into the fixed base 311, and the other end abuts against the outer cylinder 33 of the telescopic sleeve, so that the telescopic length of the telescopic sleeve 3 can be precisely controlled by rotating the screw 312. Finally, it is fixed with the nut 313, ensuring that the adjusted length remains stable. This design not only provides a high degree of flexibility and precision, but also enhances the reliability and stability of the structure, enabling the support to adapt to different construction conditions and equipment requirements.

[0028] like Figures 1 to 2 As shown, the other end of the connecting seat 4 is welded and fixed to the central shield 5. This welding provides a high-strength connection, ensuring a firm and reliable connection between the connecting seat 4 and the central shield 5, thus providing a stable support foundation for the entire screw conveyor 7 support structure. This robust connection effectively prevents the support from loosening or shifting due to vibration or external forces during the tunnel boring machine's operation, ensuring the stability of the screw conveyor 7 during operation and thereby improving the accuracy and safety of the tunnel boring machine construction. Simultaneously, the welding method also helps simplify the structure, reduce the number of connecting parts, and lower the risks caused by connecting part failures.

[0029] The working principle of this invention is as follows: When the screw conveyor 7 is installed, the position of the support beam 1 can be adjusted by changing the thickness of the shims between the two sides of the screw conveyor support beam 1 and the segment bridge 6. The angle of the screw conveyor 7 can be adjusted by changing the length of the telescopic sleeve 3. The fact that each mounting hole of the support beam 1 is an elongated hole increases the flexibility of fixing the screw conveyor support. These adjustments ultimately place the screw conveyor in the correct working position. When the screw conveyor slides, the screw conveyor 7 slide plate moves on the slide rail 21 of the support base 2. The support base 2 ensures that the installation angle of the screw conveyor 7 does not change due to the sliding of the screw conveyor 7 and provides safe and stable support. This screw conveyor support structure, arranged in the lower space of a dual-mode tunnel boring machine, avoids the confined upper space, reduces the possibility of interference between workpieces, makes the position of the screw conveyor easy to adjust and provides stable support, and greatly improves the working efficiency of the tunnel boring machine.

[0030] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dual mode shield machine screw conveyor support, characterized by, It includes a support beam (1), a support base (2), a telescopic sleeve (3) and a connecting seat (4). The support beam (1) has flanges at both ends and at the bottom. The flanges on both sides are connected to the segment bridge (6), and the bottom flange is connected to the support base (2). The support base (2) is equipped with a slide rail (21) at the bottom. The slide plate of the screw conveyor (7) slides on the slide rail (21). The lugs at both ends of the support base (2) are connected to one end of the telescopic sleeve (3) through a pin (32). The telescopic sleeve (3) is a telescopic structure with lugs at both ends and a length adjustment device (31). The other end of the telescopic sleeve (3) is connected to the connecting seat (4) through a pin (32). The other end of the connecting seat (4) is welded and fixed to the central shield (5).

2. A dual mode shield machine screw conveyor support according to claim 1, characterised in that: The flange mounting holes at both ends and the bottom of the support beam (1) are elongated holes, which facilitates the adjustment of the angle of the screw conveyor (7). The flanges on both sides are connected to the segment bridge (6), and the left and right positions of the support beam (1) can be adjusted by adjusting the thickness of the gasket (11) between the flanges.

3. A dual mode shield machine screw conveyor support according to claim 2, characterised in that: The length adjustment device (31) includes a fixed seat (311), a screw (312) and a nut (313). The fixed seat (311) has a central threaded hole that is fixed to the inner cylinder (34) of the telescopic sleeve. One end of the screw is screwed into the fixed seat (311), and the other end presses against the outer cylinder (33) of the telescopic sleeve. The length of the telescopic sleeve (3) is adjusted by adjusting the screw (312) screwing in. Finally, it is fixed with the nut (313).

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