A D-shaped fixing structure for pre-embedded connection of shield segment longitudinal seams

Abstract

The utility model discloses a shield segment longitudinal seam pre-embedded connection D-shaped piece fixing structure, which relates to the segment mold technical field, and the specific structure comprises: a mold; a D-shaped piece, which is arranged on the outside of the mold, and a notch is arranged on the side of the D-shaped piece facing the mold; a cylinder fixing seat, which is installed on the mold; a rotating cylinder, which is installed on the cylinder fixing seat, and the output end of the rotating cylinder extends from the notch into the inside of the D-shaped piece; a pressing block, which is installed on the output end of the rotating cylinder. The utility model solves the technical problems of long operation time and low efficiency of the existing embedded parts of the segment during pre-embedded production.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe segment moulds, in particular to a shield pipe segment longitudinal seam pre-embedded connection D-shaped piece fixing structure. Background Art

[0002] Shield construction is the safest and most effective construction method for subway construction, and has been gradually adopted by construction units. With the rapid development of shield construction, the demand for tunnel lining segments is growing; as the main prefabricated concrete components for subway shield construction, the production process of tunnel lining segments is relatively complex and the requirements are becoming increasingly stringent. Among them, the casting of each shield segment is mainly completed with the help of segment molds.

[0003] During the production of pipe segments, the fixation of embedded connectors is particularly important, which is directly related to the ring connection of pipe segments. The existing fixing method of D-type parts is bolt locking, and the thread is easily worn after repeated use; and the bolts are locked manually, and the locking force is relatively random, resulting in uneven local force on the D-type parts of the embedded connection throughout the length. At the same time, the above methods take a long time for manual operation and are inefficient. Utility Model Content

[0004] The utility model aims to provide a shield segment longitudinal seam pre-embedded connection D-shaped piece fixing structure, which solves the technical problems of long operation time and low efficiency in the pre-embedded production of the segment pre-embedded parts in the prior art.

[0005] The embodiment of the present application discloses a D-shaped member fixing structure for pre-embedded connection of longitudinal seams of shield segments, comprising:

[0006] Mould;

[0007] A D-shaped piece is arranged on the outer side of the mold, and a notch is arranged on a side of the D-shaped piece facing the mold;

[0008] A cylinder fixing seat, mounted on the mold;

[0009] A rotary cylinder is mounted on the cylinder fixing seat, and the output end of the rotary cylinder extends from the notch into the interior of the D-shaped member;

[0010] A pressing block is installed at the output end of the rotary cylinder.

[0011] The present application is provided with a rotary cylinder and a clamping block, and the locking assembly of the D-shaped part is achieved by the rotation of the rotary cylinder, thereby simplifying the operation and installation steps of the embedded part.

[0012] Based on the above technical solution, the embodiment of the present application can also be improved as follows:

[0013] Furthermore, a fixing nut is installed on the mold, and the fixing nut corresponds to the notch of the D-shaped part. The beneficial effect of adopting this step is that the fixing nut is used as a support to facilitate the subsequent assembly of the positioning pin.

[0014] Furthermore, a positioning pin is provided inside the fixing nut, and an end of the positioning pin extends into the interior of the D-shaped member. The beneficial effect of adopting this step is that preliminary positioning is performed through the positioning pin.

[0015] Furthermore, the height of the clamping block is greater than the width of the notch, and the width of the clamping block is less than the width of the notch. The beneficial effect of adopting this step is that it facilitates the subsequent locking or loosening of the clamping block.

[0016] Furthermore, the rotating cylinder drives the clamping block to rotate to achieve switching between the locked state and the released state of the D-shaped part; when in the locked state, the rotating cylinder drives the clamping block to rotate to the vertical state, and when in the released state, the rotating cylinder drives the clamping block to rotate to the horizontal state. The beneficial effect of adopting this step is that the rotating cylinder drives the clamping block to rotate to achieve the locking or opening of the D-shaped part.

[0017] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0018] 1. The present application is provided with a rotating cylinder and a pressing block, which cooperate with each other to achieve the locking or loosening of the D-shaped part, facilitating the subsequent production and processing of the pipe segment.

[0019] 2. The present application is provided with a positioning pin and a fixing nut, which can complete the initial locking of the D-shaped part and facilitate the processing of the D-shaped part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a D-shaped piece fixing structure for pre-embedded connection of longitudinal seams of shield segments according to a specific embodiment of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0023] 1-mold; 2-D-shaped part; 3-cylinder fixing seat; 4-rotating cylinder; 5-pressing block; 6-fixing nut; 7-locating pin;

[0024] 201-Slot. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Example:

[0030] like Figure 1 , 2 As shown, the present application discloses a D-shaped part fixing structure for pre-embedded connection of longitudinal seams of shield segments, which is used to fix pre-embedded parts, namely D-shaped parts, so as to ensure the production efficiency of the segments.

[0031] The specific structure of this application includes:

[0032] Mold 1, which is an existing mold for producing pipe segments and will not be described in detail here;

[0033] The D-shaped part 2 is arranged outside the mold 1, and a notch 201 is arranged on the side of the D-shaped part 2 facing the mold 1; the D-shaped part 2 is an existing embedded part, which will not be described in detail here;

[0034] A cylinder fixing seat 3 is installed on the mold 1. The cylinder fixing seat 3 is used to install the subsequent rotating cylinder, that is, to drive the corresponding parts to move to lock the D-shaped part;

[0035] The rotary cylinder 4 is mounted on the cylinder fixing seat 3, and the output end of the rotary cylinder 4 extends from the notch 201 into the interior of the D-shaped member 2;

[0036] The clamping block 5 is installed at the output end of the rotating cylinder 4. The clamping block 5 is driven by the rotating cylinder 4 to lock the D-shaped part 2, which is convenient for the processing of the pipe segment. After the processing is completed, the clamping block 5 is rotated to drive it to disengage, and it can be used repeatedly to improve production efficiency.

[0037] In one embodiment, a fixing nut 6 is installed on the mold 1, and the fixing nut 6 corresponds to the notch 201 of the D-shaped part 2. A positioning pin 7 is arranged inside the fixing nut 6, and the end of the positioning pin 7 extends to the inside of the D-shaped part 2. In the present application, the fixing nut 6 and the positioning pin 7 cooperate with each other to achieve the initial fixation of the D-shaped part 2. When the pipe segment is demolded later, the positioning pin 7 is first removed and then rotated by the rotating cylinder 4.

[0038] In another embodiment, the height of the clamping block 5 is greater than the width of the slot 201, and the width of the clamping block 5 is less than the width of the slot 201; the clamping block 5 in the present application is specifically designed to facilitate locking, and the clamping block can be detached from the slot 201 during subsequent demolding.

[0039] Specifically, the rotating cylinder 4 drives the clamping block 5 to rotate to realize the switching of the locking state and the releasing state of the D-shaped part 2; when in the locking state, the rotating cylinder 4 drives the clamping block 5 to rotate to the vertical state, and when in the releasing state, the rotating cylinder 4 drives the clamping block 5 to rotate to the horizontal state; that is, in the locking state, the clamping block 5 is in the vertical state, and at this time, the height limit of the clamping block 5 can lock the D-shaped part to prevent it from detaching; when in the releasing state, the clamping block 5 is in the horizontal state, and at this time, the width limit of the clamping block can facilitate the subsequent detachment of the D-shaped part.

[0040] The following description is made with respect to the use and assembly process of the present application: the fixing nut 6 is welded to the mold 1, and the rotating cylinder 4 is fixed to the mold 1 through the cylinder fixing seat 3; the clamping block 5 is fixed to the shaft of the rotating cylinder 4 through bolts; the locating pin 7 is installed in the mold through the fixing nut 6; the notch 201 of the D-shaped part 2 passes through the locating pin 7 and the clamping block 5 (in the loosened state); the rotating cylinder 4 rotates 90 degrees to drive the clamping block 5 to press down and fix the D-shaped part 2; the mold begins to pour concrete, and the manual valve in the control system of the rotating cylinder 4 has a pressure maintaining function to prevent loosening; after the casting of the mold is completed, the air pipe is loosened and the mold is twisted; when the concrete pipe segment reaches the demoulding state, the locating pin 7 is first removed, and the manual reversing valve in the cylinder control system is adjusted to the rising air intake side, and the rotating cylinder 4 rotates 90 degrees to drive the clamping block 5 to rise and loosen; the demoulding of the pipe segment is completed, and the D-shaped part is embedded in the pipe segment.

[0041] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A shield segment longitudinal seam pre-embedded connection D-shaped piece fixing structure, characterized in that: include: Mould; A D-shaped piece is arranged on the outer side of the mold, and a notch is arranged on a side of the D-shaped piece facing the mold; A cylinder fixing seat, mounted on the mold; A rotary cylinder is mounted on the cylinder fixing seat, and the output end of the rotary cylinder extends from the notch into the interior of the D-shaped member; A pressing block is installed at the output end of the rotary cylinder.

2. The shield segment longitudinal seam pre-embedded connection D-shaped piece fixing structure according to claim 1 is characterized in that: A fixing nut is installed on the mold, and the fixing nut corresponds to the notch of the D-shaped piece.

3. The shield segment longitudinal seam pre-embedded connection D-shaped piece fixing structure according to claim 2 is characterized in that: A positioning pin is arranged inside the fixing nut, and an end of the positioning pin extends into the interior of the D-shaped member.

4. The shield segment longitudinal seam pre-embedded connection D-shaped piece fixing structure according to claim 1 is characterized in that: The height of the pressing block is greater than the width of the notch, and the width of the pressing block is less than the width of the notch.

5. The shield segment longitudinal seam pre-embedded connection D-shaped piece fixing structure according to claim 4 is characterized in that: The rotating cylinder drives the clamping block to rotate to realize the switching of the locking state and the releasing state of the D-shaped part; when in the locking state, the rotating cylinder drives the clamping block to rotate to the vertical state, and when in the releasing state, the rotating cylinder drives the clamping block to rotate to the horizontal state.

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