Shield segment combined anti-loose connecting screw
Through the combined design of cylindrical and conical threaded columns and the coordination of the anti-loosening connection fastening sleeve and the main body fastening assembly, the problem of looseness and earthquake resistance of the shield pipe sheet tightening connection is solved, and the connection firmness and durability of the shield pipe sheet are improved.
Patent Information
- Application Number
- CN202422587346.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The fastening connections of existing shield pipe sheets have shortcomings in terms of looseness and shock resistance, and the looseness at the connection position is poor, the connection fit strength during tightening is poor, and the durability and shock resistance are poor.
The combination design of cylindrical threaded column and conical threaded column is adopted, combining the conical anti-loose connection fastening sleeve and the main body fastening combination seat, tightening is achieved through threaded connection, and the convenient position avoidance groove of the anti-loose connection fastening sleeve and the matching groove of the main body fastening combination seat are used during the tightening process to enhance the anti-loose resistance stability and smoothness.
It improves the looseness and shock resistance of the fastening connection, enhances the load bearing capacity and durability during tightening, and ensures the overall connection firmness and service life of the shield pipe sheet.
Smart Images
Figure CN223177930U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shield segment fastening components, in particular to a combined anti-loosening connecting screw for shield segments. Background Technique
[0002] Shield segments are important structural components during the construction of track projects. When constructing inside a tunnel, shield segments can cooperate with the tunnel for reinforcement. During the construction of track projects, other mechanical components or equipment need to be connected to the shield segments. Currently, during fastening, screws are usually used for connection, which can only play a role in fastening connection. The anti-loosening property at the connection position is relatively poor, the connection and cooperation strength during fastening is relatively weak, and the durability and seismic resistance during use are relatively poor. Content of the Utility Model
[0003] The purpose of the utility model is to provide a combined anti-loosening connecting screw for shield segments. When in use, it can cooperate with the fastening components on the shield segments for fastening connection. It is fastened through the cylindrical threaded column and conical threaded column arranged on the main body structure. And the conical anti-loosening connection fastening sleeve can ensure a larger fitting area during fastening, and can have a reliable anti-loosening fitting effect after fastening. During fastening, through the convenient fitting avoidance groove on the anti-loosening connection fastening sleeve, deformation can occur during the fastening process, making the anti-loosening stability better. The other end is combined with the main body fastening seat through the convenient fastening fitting groove, which can ensure better smoothness during fastening, stronger fitting acting force during fastening, higher bearing capacity, better overall connection firmness during later use, and stronger seismic resistance and durability.
[0004] The technical solution of the utility model is as follows:
[0005] A combined anti-loosening connecting screw for shield segments, comprising a cylindrical main body connecting and fastening column with its central axis in the up-down direction. A main body fastening thread groove is provided on the outer cylindrical surface of the main body connecting and fastening column. It is characterized in that: a conical anti-loosening and stabilizing fastening column is integrally formed at the lower end of the main body connecting and fastening column. An anti-loosening fastening mating thread groove is provided on the outer cylindrical surface of the anti-loosening and stabilizing fastening column. A positioning mating connecting column is integrally formed at the central position of the lower end of the anti-loosening and stabilizing fastening column. A conical anti-loosening connecting and fastening sleeve connected together by threaded connection is provided on the outer cylindrical surface of the main body connecting and fastening column. The outer taper of the anti-loosening connecting and fastening sleeve is the same as the taper of the anti-loosening and stabilizing fastening column. A mating convenient avoidance groove connecting the inside and outside of the whole is provided at the lower end of the anti-loosening connecting and fastening sleeve. A main body fastening combined seat with threaded fit is connected to the upper end of the main body connecting and fastening column. A cylindrical fastening safety mating groove is provided at the central position of the upper end of the main body connecting and fastening column. Fastening convenient mating grooves that are evenly distributed in a circle and connect the inside of the fastening safety mating groove with the outside of the main body connecting and fastening column are provided at the upper end of the main body connecting and fastening column. A cylindrical fastening stop safety column is integrally formed at the lower end of the main body fastening combined seat. Circumferentially evenly distributed mating reinforcing connecting columns are provided between the upper end of the fastening stop safety column and the outer position of the main body fastening combined seat.
[0006] Further, the diameter of the upper end position of the anti-loosening and stabilizing fastening column is the same as the diameter of the main body connecting and fastening column.
[0007] Further, the cross-section of the positioning mating connecting column is a regular hexagon structure.
[0008] Further, the outer taper angle of the anti-loosening connecting and fastening sleeve is 4 degrees.
[0009] Further, the cross-section of the main body fastening combined seat is a regular hexagon structure.
[0010] The beneficial effects of the present utility model:
[0011] When in use, the present utility model can cooperate with the fastening components on the shield segments for fastening connection, and is fastened through the cylindrical threaded column and the conical threaded column provided on the main body structure. Moreover, the conical anti-loosening connecting and fastening sleeve can ensure a larger mating area during fastening, and can have a reliable anti-loosening mating effect after fastening. During fastening, through the mating convenient avoidance groove on the anti-loosening connecting and fastening sleeve, deformation can occur during the fastening process, making the anti-loosening stability better; at the other end, through the main body fastening combined seat cooperating with the fastening convenient mating groove, it can ensure better smoothness during fastening, stronger mating acting force during fastening, higher bearing capacity, better overall connection firmness during later use, stronger earthquake resistance and durability. Brief Description of the Drawings
[0012] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;
[0013] Figure 2 is a front schematic diagram of the present utility model;
[0014] Figure 3 is a left-side schematic diagram of the present utility model;
[0015] Figure 4 is a cross-sectional schematic diagram at the A-A position of the present utility model;
[0016] Figure 5 is a top-view schematic diagram of the present utility model;
[0017] Figure 6 is a bottom-view schematic diagram of the present utility model;
[0018] Figure 7 is a three-dimensional structure schematic diagram of the present utility model in the second direction;
[0019] In the figure: 1. Main body connection fastening column, 2. Anti-loosening stable fastening column, 3. Positioning and mating connection column, 4. Anti-loosening connection fastening sleeve, 5. Convenient mating avoidance groove, 6. Fastening safety mating groove, 7. Fastening convenient mating groove, 8. Main body fastening combination seat, 9. Fastening stop safety column, 10. Mating and reinforcing connection column. Specific embodiments
[0020] Such as Figures 1 to 7As shown, a shield segment assembly anti-loosening connection screw comprises a cylindrical main connecting fastening column 1 with a central axis in the vertical direction. The main connecting fastening column 1 has a main fastening thread groove on its outer cylindrical surface. The lower end of the main connecting fastening column 1 is provided with an integrally formed conical anti-loosening and stabilizing fastening column 2. The outer cylindrical surface of the anti-loosening and stabilizing fastening column 2 has an anti-loosening and fastening matching thread groove. During tightening, the main structure is connected and assembled by threaded engagement. The center position of the lower end of the anti-loosening and stabilizing fastening column 2 is provided with an integrally formed positioning and matching connection column 3, which enables positioning and matching during overall assembly, ensuring higher connection accuracy during assembly and greater convenience during assembly. The outer cylindrical surface of the main connecting fastening column 1 is provided with a conical anti-loosening connection fastening sleeve 4 connected by threaded engagement. The outer taper of the anti-loosening and stabilizing fastening sleeve 4 is the same as the taper of the anti-loosening and stabilizing fastening column 2, ensuring better structural stability of the mating position during tightening and higher mating security during assembly. The lower end of the anti-loosening connection fastening sleeve 4 is provided with a convenient avoidance groove 5 that connects the inner and outer sides of the whole. When fastening at this position, it can produce a certain deformation, so that it has a reliable anti-loosening effect after fastening, making the fastening position more secure and having stronger shock resistance during later use. The upper end of the main body connection fastening column 1 is connected to a main body fastening assembly seat 8 with a threaded fit, through which the other end can be fastened and assembled. A cylindrical fastening safety fitting groove 6 is provided at the center position of the upper end of the main body connection fastening column 1, and a convenient fastening fitting groove 7 is provided at the upper end of the main body connection fastening column 1 that is evenly distributed around the circumference and connects the inner side of the fastening safety fitting groove 6 with the outer side of the main body connection fastening column 1, ensuring that there is a certain deformation space when the ends are fitted, so that the smoothness during fitting and fastening is better. The lower end of the main body fastening assembly seat 8 is provided with an integrally formed cylindrical fastening stop safety column 9, which ensures better strength of this structure and stronger bearing capacity during fastening. Between the upper end of the fastening stop safety column 9 and the outer position of the main body fastening assembly seat 8, there is a circumferentially evenly distributed matching reinforcement connection column 10, which can make the strength of the upper end fastening structure component more stable, have a stronger bearing capacity during use, and have better durability. It can be fastened with the fastening components on the shield pipe segment during use, and is fastened through the cylindrical threaded column and the conical threaded column set on the main structure, and the conical anti-loosening connection fastening sleeve can ensure a larger matching area during fastening, and can have a reliable anti-loosening matching effect after fastening. When fastening, the matching convenient avoidance groove on the anti-loosening connection fastening sleeve can produce deformation during the fastening process, making the anti-loosening stability better. The other end is matched with the fastening convenient matching groove of the main body fastening assembly seat, which can ensure better smoothness during fastening, stronger matching force during fastening, higher bearing capacity, better overall connection firmness during later use, and stronger seismic resistance and durability.
[0021] Preferably, the diameter of the upper end position of the anti-loosening and stable fastening column 2 is the same as that of the main body connection fastening column 1, so that the overall structural support strength is better, the service life during use is longer, the flatness of the main body structure is better during production, and the processing operation is more convenient.
[0022] Preferably, the cross-section of the positioning and mating connection column 3 is a regular hexagon structure, which can ensure further improvement of the combined strength during positioning and mating, and the mating safety is also better.
[0023] Preferably, the outer taper angle of the anti-loosening connection fastening sleeve 4 is 4 degrees, so that the combined anti-loosening safety during mating can reach the best. If the angle is too large, the anti-loosening strength will be affected. If the angle is too small, the anti-loosening mating space will be reduced, and the combined stability will also be affected.
[0024] Preferably, the cross-section of the main body fastening combination seat 8 is a regular hexagon structure, which can cooperate with clamping tools for combination during fastening, and the convenience during fastening is stronger.
[0025] The above is the preferred implementation mode of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle described in the present invention, several improvements or replacements can be made, and these improvements or replacements should also be regarded as the protection scope of the present invention.
Claims
1. A combined anti-loosening connecting screw for shield segments, comprising a cylindrical main body connecting and fastening column (1) with a central axis in the up-down direction, and a main body fastening thread groove is arranged on the outer cylindrical surface of the main body connecting and fastening column (1), characterized in that: The lower end of the main body connecting fastening column (1) is provided with an integrally formed conical anti-loosening and stabilizing fastening column (2). An anti-loosening fastening mating thread groove is provided on the outer cylindrical surface of the anti-loosening and stabilizing fastening column (2). The center position at the lower end of the anti-loosening and stabilizing fastening column (2) is provided with an integrally formed positioning mating connection column (3). A conical anti-loosening connection fastening sleeve (4) connected together by a threaded connection is provided on the outer cylindrical surface of the main body connecting fastening column (1). The outer taper of the anti-loosening connection fastening sleeve (4) is the same as the taper of the anti-loosening and stabilizing fastening column (2). A mating convenient avoidance groove (5) for connecting the inside and outside of the whole is provided at the lower end of the anti-loosening connection fastening sleeve (4). The upper end of the main body connecting fastening column (1) is connected with a main body fastening combination seat (8) with a threaded fit. A cylindrical fastening safety mating groove (6) is provided at the center position of the upper end of the main body connecting fastening column (1). Fastening convenient mating grooves (7) which are circumferentially and uniformly distributed and connect the inside of the fastening safety mating groove (6) with the outside of the main body connecting fastening column (1) are provided at the upper end of the main body connecting fastening column (1). A cylindrical fastening stop safety column (9) is integrally formed at the lower end of the main body fastening combination seat (8). Circumferentially and uniformly distributed mating reinforcement connection columns (10) are provided between the upper end of the fastening stop safety column (9) and the outer position of the main body fastening combination seat (8).
2. The shield segment combined anti-loosening connecting screw according to claim 1, characterized in that: The diameter of the anti-loosening and stabilizing fastening column (2) at the upper end position is the same as the diameter of the main body connecting fastening column (1).
3. The combined anti-loosening connecting screw for shield segments according to claim 1, wherein: The cross-section of the positioning mating connection column (3) is a regular hexagon structure.
4. A combined anti-loosening connecting screw for shield segments according to claim 1, characterized in that: The outer taper angle of the anti-loosening connection fastening sleeve (4) is 4 degrees.
5. A combined anti-loosening connecting screw for shield segments according to claim 1, characterized in that: The cross-section of the main body fastening combination seat (8) is a regular hexagon structure.