A new type of large-diameter shaft segment assembly precision control auxiliary tool and device

Abstract

The utility model provides a kind of novel large-diameter vertical shaft segment assembly precision control's auxiliary tool and device, the auxiliary tool includes fixed frame, the top of one end of the fixed frame is symmetrically provided with two auxiliary plates, two auxiliary plates are arranged in the shape of splay, two side plates of the fixed frame below auxiliary plate are respectively provided with one for adjusting inverted trapezoidal segment angle separation type jack, the bottom of the fixed frame is fixed to the end of right trapezoidal segment, and the lower area of inverted trapezoidal segment is formed between two auxiliary plates.The utility model is simple in structure, reasonable in design, can constrain the turning direction of segment vertical surface, prevent inside and outside turning when vertical shaft segment is lowered and assembled, ensure the perpendicularity of vertical shaft segment lowering, and make screw positioning more accurate when inverted trapezoidal segment is lowered and assembled.

Description

Technical Field

[0001] This utility model relates to the field of shaft construction, specifically to a new type of auxiliary tooling and device for controlling the precision of large-diameter shaft segment assembly. Background Technology

[0002] Shaft construction refers to the general term for operations such as vertical excavation, wall construction (forming a shaft), and equipment installation. Old-style shafts are shallow, small in diameter, and have short service lives. Their cross-sections are mostly rectangular, and they are often supported by wooden frames. However, as shaft depth and diameter increase, ground pressure multiplies, making wooden frames insufficient. Shafts are now often constructed using stone, steel reinforcement, and concrete. This method requires waiting for the concrete to solidify, resulting in long construction times and numerous factors affecting shaft strength, making quality control difficult and a long-standing challenge in shaft construction. To address these issues, engineers applied the method of assembling precast tunnel segments into ring supports, used in tunnel boring machines (TBMs), to shaft construction, creating a construction method that uses vertically assembled shaft segments.

[0003] In the assembly process of large-diameter vertical shaft segments, the vertical shaft segments are divided into regular trapezoidal and inverted trapezoidal segments. No wedges are set for the segments. After the regular trapezoidal segments are assembled, the segments are prone to outward flipping when assembling the inverted trapezoidal segments, which affects the assembly quality and efficiency. This problem needs to be solved.

[0004] Observations during the on-site segment assembly process revealed that the traditional inverted trapezoidal segment assembly in vertical shafts is installed between two regular trapezoidal segments by its own weight. When the segment is lowered to about 20 cm from the top of the upper ring segment, the waterstop strips on both sides of the lower part are in contact with the force, while the middle part is not under force. If the segment continues to descend, it will overturn. The segment assembly is carried out by a crawler crane, which does not have circumferential tension, making it difficult to control the overturning phenomenon of the segment. Summary of the Invention

[0005] To address the shortcomings of the existing technology, this utility model provides a novel auxiliary tooling and device for controlling the assembly precision of large-diameter vertical shaft segments. During the assembly process, it prevents the segments from flipping inside and out, achieves precise positioning of the segments, and improves construction efficiency.

[0006] The technical solution provided by this utility model is as follows: A novel auxiliary tooling for precision control of large-diameter vertical shaft segment assembly, including a fixed frame. Two auxiliary plates are symmetrically arranged at the top of one end of the fixed frame. The two auxiliary plates are arranged in a figure-eight shape. A separate jack for adjusting the angle of the inverted trapezoidal segment is respectively arranged on the two arc-shaped side plates of the fixed frame located below the auxiliary plates. The bottom opening of the fixed frame is fixed to the end of the regular trapezoidal segment. The inverted trapezoidal segment lowering area is formed between the two auxiliary plates.

[0007] Furthermore, the fixing frame includes an outer arc-shaped side plate and an inner arc-shaped side plate. An upper top plate is welded to the top of the outer arc-shaped side plate and the inner arc-shaped side plate. A first bolt hole is opened on the upper top plate, and the fixing frame is installed on the trapezoidal tube segment by the top fixing bolt.

[0008] Furthermore, multiple second bolt holes are provided on both the outer arc-shaped side plate and the inner arc-shaped side plate, and the arc-shaped side plate is fastened to the inner arc surface and outer arc surface of the trapezoidal tube segment by side fixing bolts.

[0009] Furthermore, the outer arc-shaped side plate and the inner arc-shaped side plate are respectively provided with mounting brackets for fixing the split jacks. The piston ends of the two split jacks are arranged facing each other towards the inside of the mounting brackets, and the piston ends extend out to adjust the verticality of the inverted trapezoidal tube segment located inside the mounting brackets laterally.

[0010] Furthermore, multiple reinforcing ribs are welded to the outer side of the fixing frame.

[0011] Another technical solution provided by this utility model: an auxiliary device for controlling the assembly accuracy of large-diameter vertical shaft segments, including auxiliary tooling. Two sets of auxiliary tooling are symmetrically arranged and fixed to the ends of two trapezoidal segments on the left and right sides, respectively. The middle area of ​​the auxiliary plates of the two sets of auxiliary tooling is the lowering area of ​​the inverted trapezoidal segments. The inverted trapezoidal segments are adjusted by four separate jacks located on both sides of the segments.

[0012] This invention features a simple structure and reasonable design, effectively constraining the rotation direction of the vertical surface of the tunnel segments to prevent inward and outward rotation during the lowering and assembly of the shaft segments. This ensures the verticality of the shaft segments during descent and makes the screw positioning more accurate during the lowering and assembly of inverted trapezoidal segments. This invention effectively solves the problem of misalignment during the assembly of large-diameter shaft segments, achieves precise quality control over the assembly of shaft construction segments, greatly improves construction efficiency, and has high practical value. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural schematic diagram of the utility model in use;

[0015] Figure 3 This is a partial top view of the structure of this utility model in use;

[0016] Figure 4 This is a cross-sectional view of the present invention;

[0017] In the diagram: 1—fixed frame, 101—outer arc-shaped side plate, 102—inner arc-shaped side plate, 103—top plate, 104—first bolt hole, 105—second bolt hole, 2—auxiliary plate, 3—separable jack, 4—inverted trapezoidal segment, 5—positive trapezoidal segment, 6—side fixing bolt, 7—mounting frame, 8—reinforcing rib plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figures 1 to 4 All accompanying drawings are simplified versions of embodiments and are intended solely for the purpose of clearly and concisely illustrating the embodiments of this utility model. The technical solutions shown in the drawings below are specific solutions of embodiments of this utility model and are not intended to limit the scope of the claimed utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", 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 commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component 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] like Figure 1-4 The present invention discloses an auxiliary tooling for precision control of large-diameter vertical shaft segment assembly, comprising a fixed frame 1, wherein two auxiliary plates 2 are symmetrically arranged at the top of one end of the fixed frame 1, the two auxiliary plates being arranged in a figure-eight shape, and a separate jack 3 for adjusting the angle of the inverted trapezoidal segment 4 is respectively arranged on the two arc-shaped side plates of the fixed frame 1 below the auxiliary plates 2. The bottom opening of the fixed frame 1 is fixed to the end of the trapezoidal segment 5, and the two auxiliary plates 2 form a lowering area for the inverted trapezoidal segment 4.

[0021] The fixing frame 1 includes an outer arc-shaped side plate 101 and an inner arc-shaped side plate 102. An upper top plate 103 is welded to the top of the outer arc-shaped side plate 101 and the inner arc-shaped side plate 102. A first bolt hole 104 is provided on the upper top plate 103. The fixing frame 1 is installed on the trapezoidal tube 5 by the top fixing bolt.

[0022] Both the outer arc-shaped side plate 101 and the inner arc-shaped side plate 102 are provided with multiple second bolt holes 105, and the arc-shaped side plates are fastened to the inner and outer arc surfaces of the trapezoidal tube 5 by the side fixing bolts 6.

[0023] The outer arc-shaped side plate 101 and the inner arc-shaped side plate 102 are respectively provided with mounting brackets 7 for fixing the detachable jacks 3. The piston ends of the two detachable jacks 3 are arranged facing each other towards the inside of the mounting bracket 1, and the piston ends extend out to adjust the verticality of the inverted trapezoidal tube 4 located inside the mounting bracket 1 laterally. Through holes are opened on the arc-shaped side plates for the piston ends of the detachable jacks 3 to extend out. Multiple reinforcing ribs 8 are welded to the outside of the mounting bracket 1.

[0024] An auxiliary device for controlling the assembly accuracy of large-diameter vertical shaft segments includes auxiliary tooling. Two sets of auxiliary tooling are symmetrically arranged and fixed to the ends of two trapezoidal segments 5 on the left and right sides, respectively. The middle area of ​​the auxiliary plate 2 of the two sets of auxiliary tooling is the lowering area of ​​the inverted trapezoidal segment 4. The inverted trapezoidal segment 4 is adjusted by four separate jacks 3 located on both sides of the segment.

[0025] The arc-shaped side plate of this utility model is made of 40mm thick steel plate, with a length of 1800mm, a width of 570mm, and a height of 930mm. The inner arc is processed with a radius of 7.49m, and the outer arc is processed with a radius of 8.065m. It is equipped with two separate jacks. The top plate is made of steel plate with bolt holes. The auxiliary tooling is connected to the trapezoidal tube segment through the bolt holes of the tube segment. The inverted trapezoidal tube segment is lowered into the V-shaped auxiliary plate at the top of the tooling. The auxiliary plate acts as a guide plate to help the tube segment be lowered smoothly into the slot. Separate jack storage positions are added on the inner and outer sides of the arc-shaped plate.

[0026] When using this invention, during the assembly of the inverted trapezoidal segments, a tool is first placed at each end of the left and right trapezoidal segments. The tool is then connected to the segments via bolts through the original screw holes on the segments. The tool assists in lowering the segments vertically during assembly. If the inverted trapezoidal segments become misaligned during lowering, the separate jacks on the tooling at both ends are used for adjustment to ensure the segments descend vertically under their own weight. This not only solves the problem of misalignment during segment lowering and assembly but also makes screw positioning more accurate. This tool effectively solves the problem of large misalignment during the assembly of large-diameter vertical shaft segments, ensuring the accuracy and quality control of segment assembly in vertical shaft construction.

[0027] Through actual field use, this new tooling has greatly reduced the difficulty of assembling large-diameter vertical shaft segments, saved half the time in terms of assembly efficiency, and significantly improved the accuracy of segment convergence and misalignment control in terms of vertical shaft segment assembly quality control. Compared with traditional assembly methods, this new tooling has extremely obvious advantages in all aspects.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel auxiliary tooling for precision control of large-diameter vertical shaft segment assembly, characterized in that, Includes a fixed frame (1), on one end of which two auxiliary plates (2) are symmetrically arranged. The two auxiliary plates are arranged in a figure-eight shape. On the two arc-shaped side plates of the fixed frame (1) below the auxiliary plates (2), there is a separate jack (3) for adjusting the angle of the inverted trapezoidal tube segment (4). The bottom opening of the fixed frame (1) is fixed to the end of the positive trapezoidal tube segment (5). The two auxiliary plates (2) form the lowering area of ​​the inverted trapezoidal tube segment (4).

2. The auxiliary tooling for precision control of large-diameter vertical shaft segment assembly according to claim 1, characterized in that, The fixing frame (1) includes an outer arc-shaped side plate (101) and an inner arc-shaped side plate (102). An upper top plate (103) is welded to the top of the outer arc-shaped side plate (101) and the inner arc-shaped side plate (102). A first bolt hole (104) is provided on the upper top plate (103). The fixing frame (1) is installed on the trapezoidal tube segment (5) by the top fixing bolt.

3. The auxiliary tooling for precision control of large-diameter vertical shaft segment assembly according to claim 2, characterized in that, Multiple second bolt holes (105) are provided on both the outer arc-shaped side plate (101) and the inner arc-shaped side plate (102). The arc-shaped side plate is fastened to the inner and outer arc surfaces of the trapezoidal tube (5) by the side fixing bolts (6).

4. The auxiliary tooling for precision control of large-diameter vertical shaft segment assembly according to claim 2, characterized in that, The outer arc-shaped side plate (101) and the inner arc-shaped side plate (102) are respectively provided with mounting brackets (7) for fixing the split jacks (3). The piston ends of the two split jacks (3) are arranged facing each other towards the inside of the fixing bracket (1). The piston ends extend out to adjust the verticality of the inverted trapezoidal tube (4) located inside the fixing bracket (1) laterally.

5. The auxiliary tooling for precision control of large-diameter vertical shaft segment assembly according to claim 1, characterized in that, The outer side of the fixing frame (1) is welded with multiple reinforcing ribs (8).

6. A novel auxiliary device for controlling the assembly precision of large-diameter vertical shaft segments, comprising the auxiliary tooling described in any one of claims 1-5, characterized in that, The auxiliary tooling is symmetrically arranged in two sets, which are fixed to the ends of the left and right trapezoidal tube segments (5). The middle area of ​​the auxiliary plate (2) of the two sets of auxiliary tooling is the lowering area of ​​the inverted trapezoidal tube segment (4). The inverted trapezoidal tube segment (4) is adjusted by four separate jacks (3) located on both sides of the tube segment.

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