A two-stage screw machine telescopic stabilizing structure of a shield machine

Abstract

The utility model discloses a shield machine two level screw machine telescopic stable structure, including one level screw machine and two level screw machine still include setting on the arc plate of two level screw machine, install the support frame of girder between shield body and trailer, with two level screw machine center line as the axle symmetry setting on the support frame tow wheel, tow wheel supports on arc plate. Screw machine telescopic by one level screw machine through the transmission of articulated joint bearing to two level screw machine power drive its movement, support the arc plate through the symmetric setting tow wheel, guarantee self -stability through the close cooperation of tow wheel and arc plate, and through tow wheel bears the gravity of two level screw machine, guarantee to have stable support.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a telescopic stabilization structure for a secondary screw conveyor in a tunnel boring machine. Background Technology

[0002] The push-and-assemble synchronous shield tunneling machine overcomes the drawbacks of traditional shield tunneling machines where propulsion and assembly are performed separately, enabling simultaneous operation of the two core processes of tunnel boring and tunnel lining segment assembly. The core advantage of the push-and-assemble synchronous shield tunneling machine is its ability to operate continuously. Traditional single-screw conveyors must be stopped during segment assembly; however, in the push-and-assemble synchronous continuous construction process, the two-stage screw conveyor structure is crucial for ensuring continuous muck removal.

[0003] The secondary screw conveyor consists of a primary screw conveyor, a secondary screw conveyor, and a hinged spherical bearing assembly. The primary screw conveyor is directly connected to the tunnel boring machine's soil chamber. When the primary screw conveyor section extends or retracts, it drives the secondary screw conveyor through the hinged spherical bearing. For example, patent application number CN201910917961.1, entitled "An Invention Patent for a Series-Type Double Screw Conveying Device and its Conveying Method," includes a primary screw conveyor and a secondary screw conveyor connected in series. The primary screw conveyor includes a primary telescopic section with a shaftless screw shaft inside, and a double slag discharge door and a slag discharge door on the cylinder wall. The secondary screw conveyor includes a secondary screw conveyor section with a composite rotating shaft inside, and a front slag discharge door and a rear slag discharge door on the cylinder wall. The front slag discharge door corresponds to the equipment belt conveyor, and the rear slag discharge door corresponds to the continuous belt conveyor.

[0004] However, the secondary screw compressor must maintain stable movement along the extension / retraction direction during operation. The above-mentioned solution cannot achieve stable movement of the secondary screw compressor, which is prone to deflection. Utility Model Content

[0005] The purpose of this invention is to solve the above problems and provide a telescopic stabilization structure for the secondary screw conveyor of a tunnel boring machine, which can limit the deflection of the secondary screw conveyor and ensure that the secondary screw conveyor can only move along the axial direction.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A telescopic stabilization structure for a secondary screw conveyor of a tunnel boring machine includes a primary screw conveyor and a secondary screw conveyor, and also includes an arc plate disposed on the secondary screw conveyor, a support frame installed on the main beam between the shield body and the trailer, and a towing wheel symmetrically disposed on the support frame about the center line of the secondary screw conveyor, the towing wheel being supported on the arc plate.

[0008] Furthermore, the arc plate is welded onto the cylinder of the secondary screw press.

[0009] Furthermore, a guide plate is provided at the lower end of the arc plate, and guide wheels are symmetrically arranged on the support frame with the center line of the secondary screw conveyor as the axis.

[0010] Furthermore, reinforcing ribs are provided between the arc plate and the guide plate.

[0011] Furthermore, baffles are provided at both ends of the arc plate.

[0012] Furthermore, a connecting frame is provided at the lower end of the support frame.

[0013] Furthermore, the support frame is provided with a mounting bracket that rotates on the support frame, and the towing wheel is disposed within the mounting bracket.

[0014] Furthermore, the primary screw compressor and the secondary screw compressor are connected by a hinged spherical bearing.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model includes a primary screw conveyor and a secondary screw conveyor, and also includes an arc plate mounted on the secondary screw conveyor, a support frame mounted on the main beam between the shield body and the trailer, and towing wheels symmetrically arranged on the support frame about the center line of the secondary screw conveyor. The towing wheels are supported on the arc plate. When the screw conveyor extends or retracts, the primary screw conveyor transmits power to the secondary screw conveyor through a hinged joint bearing to drive its movement. The symmetrically arranged towing wheels support the arc plate, and the tight cooperation between the towing wheels and the arc plate ensures its own stability. The towing wheels also bear the weight of the secondary screw conveyor, ensuring stable support. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the arc plate structure of this utility model. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the arc plate structure of this utility model. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the support frame structure of this utility model.

[0022] In the diagram: 1. Primary screw conveyor; 2. Secondary screw conveyor; 3. Arc plate; 4. Support frame; 5. Drag wheel; 6. Guide plate; 7. Guide wheel; 8. Reinforcing rib; 9. Baffle; 10. Connecting frame; 11. Mounting frame; 12. Hinge bearing. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this utility model, 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 embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, a telescopic stabilization structure for a secondary screw conveyor of a tunnel boring machine includes a primary screw conveyor 1 and a secondary screw conveyor 2, as well as an arc plate 3 mounted on the secondary screw conveyor 2, a support frame 4 mounted on the main beam between the shield body and the trailer, and a towing wheel 5 symmetrically arranged on the support frame 4 about the center line of the secondary screw conveyor 2. The towing wheel 5 is supported on the arc plate 3.

[0025] To address the issue of maintaining the stability of the secondary screw conveyor during the extension and retraction of the primary screw conveyor, a stabilizing structure for the extension and retraction of the secondary screw conveyor is provided. The primary and secondary screw conveyors are connected via a hinged spherical bearing. The secondary screw conveyor does not have independent extension and retraction power; during extension and retraction, the power is transmitted from the primary screw conveyor to the secondary screw conveyor through the hinged spherical bearing. Symmetrically arranged rollers 5 support the arc plate 3, and the tight cooperation between the rollers 5 and the arc plate 3 ensures its own stability. The rollers also bear the weight of the secondary screw conveyor, ensuring stable support.

[0026] like Figure 1 As shown, the arc plate 3 is welded to the cylinder of the secondary screw conveyor 2. If the arc plate 3 is not installed, the drag wheel 5 will be directly supported on the cylinder of the secondary screw conveyor 2. Since the secondary screw conveyor 2 is heavy, the drag wheel 5 will cause the cylinder of the secondary screw conveyor 2 to deform, causing the drag wheel 5 to get stuck and the secondary screw conveyor 2 to be unable to extend or retract.

[0027] like Figure 3 and Figure 4 As shown, the lower end of the arc plate 3 is provided with a guide plate 6, and the support frame 4 is symmetrically provided with guide wheels 7 about the center line of the secondary screw machine 2. The guide wheels 7 are in contact with the corresponding side of the guide plate 6, thereby realizing the guiding function and preventing the secondary screw machine from deflecting.

[0028] like Figure 3As shown, a reinforcing rib 8 is provided between the arc plate 3 and the guide plate 6.

[0029] like Figure 3 As shown, baffles 9 are provided at both ends of the arc plate 3 to prevent the towing wheel 5 from separating from the arc plate 3.

[0030] like Figure 1 As shown, the lower end of the support frame 4 is provided with a connecting frame 10, which is fixed on the beam connecting the shield body and the trailer.

[0031] like Figure 4 As shown, the support frame 4 is equipped with a mounting frame 11 that rotates on the support frame 4. The towing wheels 5 are disposed within the mounting frame 11. The mounting frame 11 is symmetrically arranged about the center line of the secondary screw conveyor 2, corresponding to two rows of towing wheels respectively. The wheelsets are in contact with the arc plate. When the plane angle between the secondary screw conveyor and the tunnel boring machine changes, the mounting frame 11 is connected to the support frame 4 through a pin shaft to ensure that the angle of the wheelsets can change with the change of the angle of the secondary screw conveyor.

[0032] like Figure 1 As shown, the primary screw conveyor 1 and the secondary screw conveyor 2 are connected by a hinged spherical bearing 12.

[0033] In the description of this utility model, it should be noted that the terms "left", "right", "up", "down", 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.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.

Claims

1. A telescopic stabilization structure for a secondary screw conveyor of a tunnel boring machine, comprising a primary screw conveyor (1) and a secondary screw conveyor (2), characterized in that, It also includes an arc plate (3) set on the secondary screw machine (2), a support frame (4) installed on the beam between the shield body and the trailer, and a towing wheel (5) set symmetrically on the support frame (4) with the center line of the secondary screw machine (2) as the axis, the towing wheel (5) being supported on the arc plate (3).

2. The telescopic stabilization structure of the secondary screw conveyor of a tunnel boring machine as described in claim 1, characterized in that, The arc plate (3) is welded to the cylinder of the secondary screw press (2).

3. The telescopic stabilization structure of the secondary screw conveyor of a tunnel boring machine as described in claim 1, characterized in that, The lower end of the arc plate (3) is provided with a guide plate (6), and the support frame (4) is provided with guide wheels (7) symmetrically arranged with the center line of the secondary screw machine (2) as the axis.

4. The telescopic stabilization structure of the secondary screw conveyor of a tunnel boring machine as described in claim 3, characterized in that, A reinforcing rib (8) is provided between the arc plate (3) and the guide plate (6).

5. The telescopic stabilization structure of the secondary screw conveyor of a tunnel boring machine as described in claim 3, characterized in that, Both ends of the arc plate (3) are provided with baffles (9).

6. The telescopic stabilization structure of the secondary screw conveyor of a tunnel boring machine as described in claim 1, characterized in that, The lower end of the support frame (4) is provided with a connecting frame (10).

7. The telescopic stabilization structure of the secondary screw conveyor of a tunnel boring machine as described in claim 1, characterized in that, The support frame (4) is provided with a mounting frame (11) that rotates on the support frame (4), and the tug wheel (5) is disposed in the mounting frame (11).

8. The telescopic stabilization structure of the secondary screw conveyor of a tunnel boring machine as described in claim 1, characterized in that, The primary screw compressor (1) and the secondary screw compressor (2) are connected by a hinged spherical bearing (12).

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