Movable segment erector rack for small-diameter shield tunneling machine

Abstract

The movable segment erector rack for the small-diameter shield tunneling machine comprises a main body, a flange plate, an inner protruding edge, an inner support and an outer support, the main body extends in the front-back direction and is formed by rolling a steel plate, and the main body comprises a straight part located at the bottom and an arc-shaped part connected with the straight part; the length of the straight part in the front-back direction is not smaller than one half of the diameter of the arc-shaped part, the flange plate is coaxially connected to the end of the main body, and threaded holes and mounting grooves are formed in the two end faces of the flange plate; the inner ribs are arranged on the inner walls of the arc-shaped parts and extend in the front-back direction, so that the front and rear end faces of the inner ribs are flush with the front and rear end faces of the main body; compared with the prior art, the machine frame can keep high strength, a red and blue oil cylinder, a hydraulic motor, an assembling platform and other components can be conveniently arranged, the machine frame can move front and back through the walking rollers installed on the inner protruding edges and the inner support connected with the translation oil cylinder, the requirement for retreating to replace the shield tail brush is met, a box girder structure is abandoned, the thickness is small, and the machine frame is suitable for the small-diameter shield tunneling machine.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a mobile segment assembling machine frame for a small-diameter shield machine. Background Art

[0002] The segment assembler is the core structure of the shield machine, which is used to quickly and accurately install the prefabricated concrete segments to the inner wall of the newly excavated tunnel to form a support to prevent underground water and soil infiltration and surface settlement. Usually, the segment assembler needs to be able to achieve the actions of lifting, translation, rotation, yaw and roll of the segments, and needs to be equipped with red and blue cylinders, hydraulic motors, assembly platforms and other components. In addition, the segment assembler needs to be installed at the tail of the shield machine, and the slag conveying mechanism in the shield machine needs to pass through the middle of the segment assembler, which makes the design of the segment assembler frame difficult.

[0003] Existing segment assembly machine frames are roughly divided into two categories. One is a fixed type, which has a simple structure and occupies a small space. It is widely used in small-diameter shield machines (less than 6 meters in diameter). However, it is limited by the short movement of the segment grabbing device and cannot meet the demand for retreating and replacing the shield tail brush. The other is a mobile type, which is usually used in large-diameter shield machines (8 meters in diameter and above). This type of shield machine has a large internal space, and a box-beam structured ring frame can be used as the main body of the segment assembly machine frame, as shown in the attached figure. Figure 1 A frame of this type has been disclosed, which can move forward and backward along the support beam for a long distance and can meet the needs of replacing the shield tail brush. However, in order to ensure strength, the wall thickness between the inner and outer rings of the frame is relatively thick. In addition, components such as support beams and slag conveying mechanisms need to be installed inside the frame, making it difficult to use on small-diameter shield machines. Utility Model Content

[0004] The purpose of the utility model is to overcome one or more disadvantages in the prior art and to provide a mobile segment assembling machine frame for a small-diameter shield machine.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that a mobile segment assembly machine frame for a small-diameter shield machine includes:

[0006] A main body, the main body extends in the front-to-back direction, the main body is in the shape of a cylinder with two ends open, the main body includes a straight portion extending in the horizontal direction at the bottom and an arc portion connected to the straight portion, the main body is rolled from a steel plate, and the length of the main body in the front-to-back direction is not less than half of the diameter of the arc portion;

[0007] A flange, the flange is coaxially connected to the end of the main body, one end surface of the flange is provided with a threaded hole for connecting the outer ring of the slewing bearing, and the other end surface is provided with a mounting groove for mounting an encoder and a drive motor, and the mounting groove is located directly below the straight portion;

[0008] An inner convex ridge, the inner convex ridge is arranged on the inner wall of the arc-shaped portion and extends in the front-to-back direction, the front and rear end surfaces of the inner convex ridge are flush with the front and rear end surfaces of the main body, and a roller groove for installing a walking roller is opened on the surface of the inner convex ridge facing the axis of the arc-shaped portion;

[0009] An inner support, the inner support is connected to the inner wall of the arc-shaped portion and is located above the inner convex ridge, the inner support includes two connecting plates for connecting the translation cylinder, and the connecting plates are parallel to the straight portion;

[0010] An external support is arranged on the outer wall of the main body, there are multiple external supports and they are distributed at intervals, and the external support is used to fix the assembly platform.

[0011] Preferably, the width of the straight portion in the left-right direction is 70% to 85% of the diameter of the arc-shaped portion.

[0012] Preferably, the flange is sleeved on the front end of the main body and is located behind the front end surface of the main body, so that the front end surface of the main body protrudes forward to form a connecting edge.

[0013] Further preferably, the threaded hole is a blind hole, there are a plurality of threaded holes and they are evenly distributed on the front end surface of the flange along the axis of the flange, and the threaded holes are arranged close to the edge of the flange.

[0014] Further preferably, the projection of the mounting groove in the front-to-back direction is V-shaped, the mounting groove is a blind groove, and the bottom wall of the mounting groove is provided with a through hole that penetrates the flange along the front-to-back direction, the through hole comprising a middle through hole located in the middle and side through holes symmetrically distributed on the left and right sides of the middle through hole, the middle through hole is used to install the encoder, and the side through holes are used to install the drive motor.

[0015] Further preferably, the front end surface of the flange is further provided with a docking edge docking with the connecting edge, the docking edge is arc-shaped and coaxial with the arc-shaped portion, and the diameter of the docking edge is equal to the diameter of the arc-shaped portion.

[0016] Further preferably, the axial center line of the through hole intersects the butt edge perpendicularly.

[0017] Further preferably, the docking edge and the connecting edge form a docking cavity, and a semi-enclosed enclosure for covering the opening of the through hole in the docking cavity is provided in the docking cavity.

[0018] Preferably, there are two inner convex ridges, and the two inner convex ridges are symmetrically distributed on both sides of the axis of the arc portion.

[0019] Further preferably, there are two inner supports, and each inner support corresponds to one inner convex ridge.

[0020] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0021] The utility model provides a mobile segment assembler frame for a small-diameter shield machine, comprising a main body, a flange, an inner convex rib, an inner support and an outer support. The main body is extended in the front-to-back direction and rolled from a steel plate, so that it includes a straight portion located at the bottom and an arc-shaped portion connected to the straight portion, so that the length of the straight portion in the front-to-back direction is not less than half of the diameter of the arc-shaped portion, the flange is coaxially connected to the end of the main body, and threaded holes and mounting grooves are arranged on both end surfaces thereof; the inner convex rib is arranged on the inner wall of the arc-shaped portion and extends in the front-to-back direction, so that the front and rear end surfaces are flush with the front and rear end surfaces of the main body; the frame can maintain a high strength and facilitate the arrangement of components such as red and blue oil cylinders, hydraulic motors and assembly platforms, and the frame can be moved forward and backward by installing walking rollers through the inner convex ribs and connecting the inner support to the translation oil cylinder, thereby meeting the need for retreating and replacing the shield tail brush, abandoning the box beam structure, having a thin thickness in the radial direction, and being suitable for small-diameter shield machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of a frame of a mobile segment assembly machine in the prior art.

[0023] Figure 2 It is a main schematic diagram of a preferred embodiment of the utility model.

[0024] Figure 3 , Figure 4 , Figure 5 yes Figure 2 A three-dimensional schematic diagram of .

[0025] Figure 6 yes Figure 2 Schematic diagram of the structure used in the small-diameter shield machine segment assembly machine.

[0026] Among them: 10. Main body; 11. Straight part; 12. Arc-shaped part; 13. Connecting edge; 20. Flange; 21. Threaded hole; 22. Mounting groove; 23. Middle through hole; 24. Side through hole; 25. Docking edge; 26. Docking cavity; 27. Semi-enclosed enclosure; 30. Inner ridge; 31. Roller groove; 311. Connecting hole; 40. Inner support; 41. Connecting plate; 50. Outer support. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0028] The up-down, left-right, front-back directions described in the present invention are Figure 2 The up and down, left and right, inside and outside directions.

[0029] like Figures 2 to 6 As shown, the mobile segment assembler frame for a small-diameter shield machine provided by the utility model comprises: a main body 10, a flange 20, an inner convex rib 30, an inner support 40, and an outer support 50, wherein the main body 10 extends in the front-to-back direction, and the main body 10 is in the shape of a cylinder with openings at both ends, and the main body 10 comprises a straight portion 11 extending in the horizontal direction at the bottom and an arc-shaped portion 12 connected to the straight portion 11, and the main body 10 is formed by rolling a steel plate, and the length of the main body 10 in the front-to-back direction is half of the diameter of the arc-shaped portion 12; the flange 20 is coaxially connected to the end of the main body 10, and one end face of the flange 20 is provided with a threaded hole 21 for connecting the outer ring of the slewing bearing, and the other end face is provided with a mounting groove 22 for mounting an encoder and a drive motor, and the mounting groove 22 is located directly below the straight portion 11; the inner convex rib 30 is arranged on the inner wall of the arc-shaped portion 12 and extends in the front-to-back direction, and the front and rear end faces of the inner convex rib 30 are aligned with the The front and rear end surfaces are flush, and there are two inner ridges 30. The two inner ridges 30 are symmetrically distributed on the left and right sides of the axis of the arc-shaped portion 12. The surface of the inner ridge 30 facing the axis of the arc-shaped portion 12 is provided with a roller groove 31 for installing a walking roller. There are two roller grooves 31, and the two roller grooves 31 are arranged at intervals along the front and rear directions. A connecting hole 311 is provided on the bottom wall of the roller groove 31, and the connecting hole 311 passes through the inner ridge 30 and the arc-shaped portion 12 along the radial direction of the arc-shaped portion 12; the inner support 40 is connected to the inner wall of the arc-shaped portion 12 and is located above the inner ridge 30. There are two inner supports 40, each inner support 40 is arranged corresponding to an inner ridge 30, and each inner support 40 includes two connecting plates 41 for connecting a translation cylinder, and the connecting plates 41 are parallel to the straight portion 11; the outer support 50 is arranged on the outer wall of the main body 10, and there are multiple outer supports 50 and they are distributed at intervals, and the outer support 50 is used to fix the assembly platform.

[0030] The advantage of this setting is that it can not only maintain a high strength of the frame, facilitate the installation of red and blue cylinders, hydraulic motors, assembly platforms and other components, but also realize the forward and backward movement of the frame by installing walking rollers through the inner ridges and connecting the translation cylinders with the inner supports, thereby meeting the needs of retreating and replacing the shield tail brush. It abandons the box beam structure, has a thin thickness in the radial direction, and is suitable for small-diameter shield machines.

[0031] To facilitate the installation of the mounting groove 22 , the width of the straight portion 11 in the left-right direction is preferably 70% to 85% of the diameter of the arc portion 12 . In this embodiment, the width of the straight portion 11 in the left-right direction is preferably 78% of the diameter of the arc portion 12 .

[0032] In this embodiment, the flange 20 is sleeved on the front end of the main body 10 and is located behind the front end surface of the main body 10, so that the front end surface of the main body 10 protrudes forward to form a connecting edge 13. Furthermore, the threaded hole 21 is a blind hole. There are multiple threaded holes 21 and they are evenly distributed on the front end surface of the flange 20 along the axis of the flange 20. The threaded holes 21 are arranged close to the edge of the flange 20. The projection of the mounting groove 22 in the front-to-back direction is V-shaped. The mounting groove 22 is a blind groove. The bottom wall of the mounting groove 22 is provided with a through hole that penetrates the flange 20 along the front-to-back direction. The through holes include a middle through hole 23 located in the middle and side through holes 24 symmetrically distributed on the left and right sides of the middle through hole 23. The middle through hole 23 is used to install the encoder, and the side through holes 24 are used to install the drive motor.

[0033] Furthermore, the front end face of the flange 20 is also provided with a docking edge 25 docked with the connecting edge 13, the docking edge 25 is arc-shaped and coaxial with the arc-shaped portion 12, and the diameter of the docking edge 25 is equal to the diameter of the arc-shaped portion 12. Furthermore, the axis lines of the middle through hole 23 and the side through hole 24 intersect the docking edge 25 vertically, so that a part of the openings of the middle through hole 23 and the side through hole 24 are located in the docking cavity 26 surrounded by the docking edge 25 and the connecting edge 13. In order to achieve isolation, further, a semi-enclosed cover 27 for covering the openings of the middle through hole 23 and the side through hole 24 in the docking cavity 26 is also provided in the docking cavity 26.

[0034] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A mobile segment assembler frame for a small-diameter shield machine, characterized in that: include: A main body, the main body extends in the front-to-back direction, the main body is in the shape of a cylinder with two ends open, the main body includes a straight portion extending in the horizontal direction at the bottom and an arc portion connected to the straight portion, the main body is rolled from a steel plate, and the length of the main body in the front-to-back direction is not less than half of the diameter of the arc portion; A flange, the flange is coaxially connected to the end of the main body, one end surface of the flange is provided with a threaded hole for connecting the outer ring of the slewing bearing, and the other end surface is provided with a mounting groove for mounting an encoder and a drive motor, and the mounting groove is located directly below the straight portion; An inner convex ridge, the inner convex ridge is arranged on the inner wall of the arc-shaped portion and extends in the front-to-back direction, the front and rear end surfaces of the inner convex ridge are flush with the front and rear end surfaces of the main body, and a roller groove for installing a walking roller is opened on the surface of the inner convex ridge facing the axis of the arc-shaped portion; An inner support, the inner support is connected to the inner wall of the arc-shaped portion and is located above the inner convex ridge, the inner support includes two connecting plates for connecting the translation cylinder, and the connecting plates are parallel to the straight portion; An external support is arranged on the outer wall of the main body, there are multiple external supports and they are distributed at intervals, and the external support is used to fix the assembly platform.

2. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 1 is characterized in that: The width of the straight portion in the left-right direction is 70% to 85% of the diameter of the arc-shaped portion.

3. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 1 is characterized in that: The flange is sleeved on the front end of the main body and is located behind the front end surface of the main body, so that the front end surface of the main body protrudes forward to form a connecting edge.

4. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 3 is characterized in that: The threaded holes are blind holes. There are a plurality of threaded holes which are evenly distributed on the front end surface of the flange along the axis of the flange. The threaded holes are arranged close to the edge of the flange.

5. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 3 is characterized in that: The projection of the mounting groove in the front-to-back direction is V-shaped, and the mounting groove is a blind groove. The bottom wall of the mounting groove is provided with a through hole that penetrates the flange along the front-to-back direction. The through hole includes a middle through hole located in the middle and side through holes symmetrically distributed on the left and right sides of the middle through hole. The middle through hole is used to install the encoder, and the side through holes are used to install the drive motor.

6. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 5 is characterized in that: The front end surface of the flange is also provided with a butt joint edge butted with the connecting edge, the butt joint edge is arc-shaped and coaxial with the arc-shaped portion, and the diameter of the butt joint edge is equal to the diameter of the arc-shaped portion.

7. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 6 is characterized in that: The axis center line of the through hole intersects the butt edge perpendicularly.

8. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 7 is characterized in that: The butt joint edge and the connecting edge form a butt joint cavity, and a semi-enclosed enclosure for covering the opening of the through hole in the butt joint cavity is provided in the butt joint cavity.

9. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 1 is characterized in that: There are two inner convex ridges, and the two inner convex ridges are symmetrically distributed on both sides of the axis of the arc portion.

10. The mobile segment assembling machine frame for a small-diameter shield machine according to claim 9, characterized in that: There are two inner supports, and each inner support corresponds to one inner convex ridge.

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