Quick release structure and tunnel segment

Abstract

The utility model relates to a quick release structure and a tunnel segment, the quick release structure comprises a male head assembly and a female head assembly, the female head assembly comprises a laterally through connecting groove, and at least one groove wall surface of the connecting groove is an inclined wedge-shaped surface. The male head assembly comprises a connector matched with the connecting groove, and the minimum cross section area of the connecting groove is smaller than or equal to the minimum cross section area of the connector. The connecting groove penetrates through the female head assembly, the sectional dimension of the connecting groove is gradually reduced from one end to the other end through the inclined wedge-shaped face, an approximately conical space or a trapezoid space is formed, the male head assembly can be conveniently inserted in the direction from the large end to the small end in a directional mode and matched with the wedge-shaped face to achieve positioning, combination is tight, and the complexity of the overall structure is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel technical field relates to a quick release structure and tunnel segment. BACKGROUND

[0002] In the process of tunnel, underground pipe gallery and shaft underground construction, it needs to lay tunnel segment in excavated channel, and multiple tunnel segments are combined in ring shape. Among them, the lateral of adjacent two tunnel segments is provided with complementary quick release structure for connection.

[0003] The public file with the announcement number CN210087336U provides a buried flexible shield tunnel segment joint, and the clamping plate is arranged in the first joint body. The public file with the announcement number CN212774312U provides a ring quick joint for shield tunnel segment installation, which comprises a T joint and a C joint, a slot matched with the T-shaped convex head is arranged on the C-shaped concave head, the end of the slot is a closed end, and a pull-resistant convex is arranged on the tail bolt of the C joint.

[0004] In the above-mentioned tunnel segment, the joint structure is connected by lateral sliding fit, one of the ways is to adopt a straight slot structure with consistent cross-sectional size, which is not easy to position the fitting position of the sliding fit direction of the tunnel segment, and the other joint structure adopts an end-closed structure, although the two can position the final fitting configuration, however, the structure is complex, the processing difficulty is great, the production cost is high, and there is also the technical problem that the activity gap between the joints is uncontrollable, therefore, it needs to be improved. UTILITY MODEL CONTENTS

[0005] In order to overcome the problems in the related art, the utility model embodiment provides a quick release structure and a tunnel segment to solve the technical problems of complex joint structure and uncontrollable fitting gap.

[0006] According to the first aspect of the utility model embodiment, a quick release structure is provided, which comprises a male head assembly and a female head assembly:

[0007] The female head assembly comprises a lateral through connection slot, and at least one slot wall surface of the connection slot is an inclined wedge surface;

[0008] The male head assembly comprises a connection head matched with the connection slot, and the minimum cross-sectional area of the connection slot is less than or equal to the minimum cross-sectional area of the connection head.

[0009] In an embodiment, the connection slot comprises a limiting area and a notch area, and the width of the limiting area is greater than the opening width of the notch area.

[0010] The transverse section of the limiting area is trapezoidal, T-shaped, dovetail-shaped, rectangular, curved surface-shaped or polygonal with part of the angle being arc-shaped.

[0011] In one embodiment, the female connector assembly includes a female connector body and a reinforcing structure, the reinforcing structure being a rib-like or columnar protrusion from the surface of the female connector body.

[0012] In one embodiment, a compression-moving check component is further included. The check component is installed on one of the connecting groove and the connector. The other of the connecting groove and the connector is provided with at least one check groove. After the connector is inserted into the connecting groove, part of the check component elastically resets and snaps into the check groove.

[0013] In one embodiment, the check valve assembly is mounted on the connector, and the lateral surface of the connecting groove is partially recessed to form the check valve groove.

[0014] In one embodiment, in the insertion direction of the connector, the cross-sectional dimension of the insertion end of the check assembly is smaller than the cross-sectional dimension of the check end of the check assembly.

[0015] In one embodiment, the check valve assembly includes at least one check valve block and an elastic element, the check valve block being configured with an inclined surface, and the elastic element elastically pushing against a portion of the check valve block that extends beyond the surface of the connector.

[0016] In one embodiment, an inclined guide surface is provided on one side of the check groove, and the guide surface is located on the opposite sidewall in the insertion direction of the connector.

[0017] In one embodiment, the female connector assembly is an integral structure; or,

[0018] The female head assembly includes two clamping blocks, which are locked together by a locking element.

[0019] According to a second aspect of the present invention, a tunnel segment is provided, including a quick-release structure and a segment body as described above, wherein the female connector is pre-embedded and connected to the segment body, and the male connector is pre-embedded and connected to another segment body.

[0020] The technical solution provided by the embodiments of this utility model may include the following beneficial effects: the connecting groove penetrates the female head assembly, and the inclined wedge-shaped surface gradually reduces the cross-sectional size of the connecting groove from one end to the other, forming an approximately conical or trapezoidal space, which facilitates the directional insertion of the male head assembly from the large end to the small end and achieves positioning in conjunction with the wedge-shaped surface. This not only results in a tight fit but also reduces the complexity of the overall structure. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0022] Figure 1This is a schematic diagram illustrating the lateral mating of a male connector assembly and a female connector assembly according to one embodiment.

[0023] Figure 2 This is a cross-sectional structural schematic diagram of the female head assembly according to one embodiment.

[0024] Figure 3 This is a cross-sectional schematic diagram of the female head assembly according to one embodiment.

[0025] Figure 4 A schematic diagram of a female head assembly with a reinforced structure is shown according to one embodiment.

[0026] Figure 5 A cross-sectional schematic diagram of a check valve assembly locking the female and male connector assemblies is shown according to one embodiment.

[0027] Figure 6 This is a cross-sectional schematic diagram of a male connector assembly and a female connector assembly used for segment connection according to an embodiment.

[0028] Figure 7 This is a cross-sectional schematic diagram illustrating another quick-release structure for segment connection according to one embodiment.

[0029] Figure 8 This is a schematic diagram illustrating another female head assembly according to one embodiment.

[0030] Figure 9 This is a schematic diagram of a quick-release structure with a rectangular limiting area, according to one embodiment.

[0031] Figure 10 This is a schematic diagram of a quick-release structure with a polygonal limiting area, according to one embodiment.

[0032] Figure 11 This is a schematic diagram of a quick-release structure with a curved limiting area, according to one embodiment.

[0033] In the figure, male connector 10; connector 11; mounting groove 12; female connector 20; connecting groove 21; limiting area 211; notch area 212; check groove 22; guide surface 221; check surface 222; wedge surface 23; female connector body 24; reinforcing structure 25; clamping block 26; check component 30; check block 31; inclined surface 311; elastic element 32; segment body 40. Detailed Implementation

[0034] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] like Figures 1 to 4 As shown, this utility model provides a quick-release structure, which includes a complementary male connector assembly 10 and a female connector assembly 20.

[0036] The female connector assembly 20 includes a lateral through-hole connecting groove 21. The connecting groove 21 is a through-hole structure that extends from one side of the female connector assembly 20 to the opposite side. The width of the groove opening of the connecting groove 21 is smaller than the width of the inner groove wall.

[0037] Preferably, the connecting groove 21 includes a limiting area 211 and a notch area 212, wherein the width of the limiting area 211 is greater than the opening width of the notch area 212. The shape of the connector 11 of the male connector assembly 10 is complementary to that of the connecting groove 21. The connector 11 is confined to the limiting area 211 and extends from the notch area 212, thereby forming a tensile-resistant structure between the male connector assembly 10 and the female connector assembly 20.

[0038] like Figure 1 , Figures 9 to 11 As shown, the transverse cross-section of the limiting area 211 is trapezoidal, T-shaped, dovetail-shaped, rectangular, curved, or a polygon with some corners set as arcs. The limiting area 211 forms the pull-out resistant part of the male connector assembly 10. By setting the limiting area 211 in the above-mentioned shape, a limiting part can be formed to prevent the connector 11 from being pulled out of the notch area 212. When applied to the tube segments, it can realize the lateral sliding assembly of the tube segments, and a pull-out resistant connection can be formed between the end faces of the tube segments, and multiple tube segments can form an integral ring structure.

[0039] Furthermore, at least one wall surface of the connecting groove 21 is an inclined wedge-shaped surface 23. The wedge-shaped surface 23 forms a wedge assembly structure in the limiting area 211, enabling unidirectional assembly and tight locking. Typically, after the tunnel segments are assembled into a ring, they can be used in conjunction with the annular assembly of the tunnel segments. The tunnel segment rings inside the tunnel abut one another, with unidirectional wedge-shaped mating connections, which can be used in conjunction with the annular tunnel segment assembly positioning to improve connection accuracy.

[0040] The minimum cross-sectional area of ​​the connecting groove 21 is less than or equal to the minimum cross-sectional area of ​​the connector 11. The maximum insertion depth of the connector 11 is controlled by the cross-section of the connecting groove 21 to prevent the small end of the connector 11 from exceeding the small end of the connecting groove 21.

[0041] Optionally, the female connector assembly 20 includes a female connector body 24 and a reinforcing structure 25. The reinforcing structure 25 protrudes from the surface of the female connector body 24 in a rib-like or columnar shape. The female connector body 24 is a rigid structural component, and the connecting groove 21 penetrates from one side of the female connector body 24 to the other, forming a through groove structure. The reinforcing structure 25 protrudes laterally from the female connector body 24 and combines with part of the female connector body 24 embedded in the concrete of the tunnel segment, thereby improving the bonding strength between the female connector assembly 20 and the concrete.

[0042] Optionally, the reinforcing structure 25 is fixed at intervals to multiple studs on the female head body 24 to form a detachable connection structure. The protruding direction of some studs intersects with the pull-out direction of the female head body 24 to further improve the pull-out resistance. The protruding direction of some studs is opposite to the direction of the female head body 24 to further improve the pull-out resistance.

[0043] Optionally, the reinforcing structure 25 consists of multiple reinforcing bars fixed to the main body 24 of the female head to form an integral connection structure. The arrangement of the reinforcing bars can be similar to that of a stud. The difference from a stud is that the reinforcing bars can be set in different shapes, such as partially bent, to increase the connection area and the bonding range between the female head assembly 20 and the concrete body.

[0044] Optionally, the reinforcing structure 25 is a protrusion protruding from the side of the main body 24 of the female head, so as to form its own tensile resistance structure.

[0045] As a preferred option, the reinforcing structure 25 can be applied to the male connector assembly 10, which can be understood by reference and will not be elaborated here.

[0046] like Figures 2 to 6 As shown, in one embodiment, the quick-release structure further includes a compressible check valve assembly 30, which is installed in either the connecting groove 21 or the connector 11. The other of the connecting groove 21 and the connector 11 is provided with at least one check valve groove 22. After the connector 11 is inserted into the connecting groove 21, the check valve assembly 30 elastically resets and snaps into the check valve groove 22.

[0047] The check valve assembly 30 is movable and can be elastically compressed and reset, so that the check valve assembly 30 can be compressed during the insertion of the male connector assembly 10 and the female connector assembly 20, and reset when the male connector assembly 10 and the female connector assembly 20 are in place. Part of the check valve assembly 30 extends into the check valve groove 22, thereby locking the quick-release structure.

[0048] Optionally, the check valve assembly 30 is installed in the connecting groove 21, and the connector 11 is provided with at least one check valve groove 22, with the check valve assembly 30 and the check valve groove 22 matching each other. The check valve groove 22 is provided on the outer wall of the connector 11 for easy processing.

[0049] Optionally, the check valve assembly 30 is mounted on the connector 11, and the connecting groove 21 is provided with at least one check valve groove 22, with the check valve assembly 30 and the check valve groove 22 matching each other. In this embodiment, the assembly position of the check valve assembly 30 is located on the outside, improving the ease of assembly.

[0050] In a preferred embodiment, the check valve assembly 30 is mounted on the connector 11, and the lateral surface of the connecting groove 21 is partially recessed to form a check valve groove 22. The connector 11 has a recessed mounting groove 12 on its side, and the check valve assembly 30 is compressed and movable in the mounting groove 12 to achieve the technical effect of unidirectional compression and reverse locking.

[0051] In the insertion direction of the connector 11, the cross-sectional dimension of the insertion end of the check assembly 30 is smaller than that of the check end. There is a height difference between the insertion end and the check end of the check assembly 30. The check assembly 30 is compressed into the mounting groove 12 during the insertion of the connector 11 into the connecting groove 21, and resets and locks into the check groove 22 after passing the check end. Because the check end relies on the check surface 222 of the check groove 22, reverse pull-out is prevented. Combined with the wedge-shaped surface 23 of the connecting groove 21, the female connector assembly 20 and the male connector assembly 10 are completely locked together.

[0052] like Figure 4 and Figure 5 As shown, in an optional embodiment, the check valve assembly 30 includes at least one check valve block 31 and an elastic member 32. The check valve block 31 is provided with an inclined surface 311, and the elastic member 32 elastically pushes a portion of the check valve block 31 that extends beyond the surface of the connector 11. The check valve block 31 is a rigid structural member that can be rotatably connected to the connector 11 by a pin; or, the check valve block 31 can be rotatably connected to the connector 11 by its own shaft-like protrusion structure.

[0053] The elastic element 32 elastically pushes the check block 31 outward toward the mounting groove 12, that is, the check block 31 is in a normally protruding state.

[0054] Preferably, the check block 31 is configured as a trapezoidal block structure, a triangular block structure, or a rectangular block structure with a curved surface. The inclined surface 311 of the inclined or curved surface of the check block 31 faces the large end of the connecting groove 21, so as to facilitate the compression of the inclined surface 311 during the insertion of the connector 11 into the connecting groove 21, and the check block 31 is compressed into the mounting groove 12.

[0055] After the connector 11 is inserted into place, the elastic element 32 elastically pushes the check block 31 back to its original position, and the end of the check block 31 is engaged in the check groove 22. Preferably, the check block 31 is provided with a vertical check surface 222, which abuts against the mounting groove 12.

[0056] The check groove 22 has a recessed structure, for example, it can be a rectangular countersunk hole, a trapezoidal countersunk hole, a triangular countersunk hole, etc. Optionally, the depth of the check groove 22 is greater than or equal to the height of the check block 31 extending beyond the connector 11, so that the extended portion of the check block 31 is fully inserted into the check groove 22. Optionally, the depth of the check groove 22 is less than the height of the check block 31 extending beyond the connector 11, so that the extended portion of the check block 31 is compressed and elastically abuts against the bottom of the check groove 22.

[0057] In one embodiment, an inclined guide surface 221 is provided on one side of the check groove 22, and the guide surface 221 is located on the opposite sidewall of the connector 11 in the insertion direction. The guide surface 221 has an inclined structure and is located in the sliding direction of the check block 31, thereby guiding the check block 31 to gradually slide out of the check groove 22 and into the next area. The groove wall in the check groove 22 opposite to the guide surface 221 is configured with a check surface 222, and the angle of the check surface 222 relative to the sliding direction is greater than 60 degrees and less than 135 degrees. Preferably, the check wall is perpendicular to the sliding direction.

[0058] In this embodiment, multiple check grooves 22 can be provided, and correspondingly, the number of check blocks 31 is less than or equal to the number of check grooves 22.

[0059] like Figure 4 and Figure 8 As shown, in one embodiment, the female head body 24 is an integral structure, and the female head body 24 and the steel bar are welded together to form an integral structure. The female head body 24 can be cast or machined, thereby improving the overall structural strength of the female head assembly 20.

[0060] In one embodiment, the female head body 24 is an integral structure, and the female head body 24 and the stud are detachably connected. In this embodiment, the female head body 24 is an integral structure.

[0061] In another embodiment, the female head assembly 20 includes two clamping blocks 26, which are joined together to form the female head body 24. The two clamping blocks 26 are locked together by a locking member to facilitate the processing of the connecting groove 21 and the check groove 22.

[0062] like Figures 1 to 7 As shown, the quick-release structure disclosed in the above embodiments is applied to tunnel segments. The tunnel segment includes the quick-release structure and the segment body 40. The female connector assembly 20 is pre-embedded and connected to the segment body 40, and the male connector assembly 10 is pre-embedded and connected to another segment body 40.

[0063] The female connector 20 and the male connector 10 are used in pairs to connect and lock the two tunnel segments into one piece, which will not separate, greatly improving the assembly efficiency and stability of the entire tunnel segment ring.

[0064] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this invention.

Claims

1. A quick-release structure, comprising a male connector assembly and a female connector assembly, characterized in that: The female connector assembly includes a laterally penetrating connecting groove, at least one groove wall surface of which is an inclined wedge-shaped surface; The male connector assembly includes a connector that adapts to the connecting slot, wherein the minimum cross-sectional area of ​​the connecting slot is less than or equal to the minimum cross-sectional area of ​​the connector.

2. The quick-release structure according to claim 1, characterized in that, The connecting groove includes a limiting area and a notch area, wherein the width of the limiting area is greater than the opening width of the notch area; The transverse cross-section of the limiting area is trapezoidal, T-shaped, swallowtail-shaped, rectangular, curved, or a polygon with some corners set as arcs.

3. The quick-release structure according to claim 1, characterized in that, The female head assembly includes a female head body and a reinforcing structure, wherein the reinforcing structure protrudes from the surface of the female head body in a rib-like or columnar manner.

4. The quick-release structure according to any one of claims 1 to 3, characterized in that, It also includes a compression-activated check valve assembly, which is installed in one of the connecting groove and the connector. The other of the connecting groove and the connector is provided with at least one check valve groove. After the connector is inserted into the connecting groove, part of the check valve assembly elastically resets and snaps into the check valve groove.

5. The quick-release structure according to claim 4, characterized in that, The check valve assembly is installed on the connector, and the lateral surface of the connecting groove is partially recessed to form the check valve groove.

6. The quick-release structure according to claim 5, characterized in that, In the insertion direction of the connector, the cross-sectional dimension of the insertion end of the check assembly is smaller than the cross-sectional dimension of the check end of the check assembly.

7. The quick-release structure according to claim 5, characterized in that, The check valve assembly includes at least one check valve block and an elastic element. The check valve block is configured with an inclined surface, and the elastic element elastically pushes against a portion of the check valve block that extends beyond the surface of the connector.

8. The quick-release structure according to claim 4, characterized in that, One side of the check groove is provided with an inclined guide surface, which is located on the opposite side wall in the insertion direction of the connector.

9. The quick-release structure according to claim 4, characterized in that, The female connector assembly is a single, integrated structure; or... The female head assembly includes two clamping blocks, which are locked together by a locking element.

10. A tunnel segment, characterized in that, Includes the quick-release structure and segment body as described in any one of claims 1-9, wherein the female connector assembly is pre-embedded and connected to the segment body, and the male connector assembly is pre-embedded and connected to another segment body.

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