Quick connecting device for I-shaped steel lagging jack

Abstract

The utility model discloses a quick connecting device for an I-shaped steel arch frame, which is characterized in that a positioning column is formed at the edge of one side of one of two adjacent connecting steel plates opposite to the other connecting steel plate, and a bayonet capable of being sleeved into the two adjacent connecting steel plates from the edge is formed between a first pressing piece and a second pressing piece at an interval; a positioning hole capable of being arranged on the positioning piece in a sleeved mode is formed in the first pressing piece, and a locking piece is movably connected to the second pressing piece in a screwed mode. During construction, after the first pressing piece and the second pressing piece are arranged on the two adjacent connecting steel plates in a sleeving mode and the positioning holes are arranged on the positioning columns in a sleeving mode, the locking piece is screwed into the position to abut against the other one of the two adjacent connecting steel plates, and then the two adjacent connecting steel plates can be fixedly clamped together through the first pressing piece and the locking piece; and the position matching requirement does not exist, the height alignment requirement between the two adjacent connecting steel plates does not exist any more, it is guaranteed that each locking assembly is smoothly locked and connected with the two adjacent connecting steel plates, and the structural strength and construction efficiency of the tunnel primary support are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an I-beam arch frame quick connection device. Background Art

[0002] During the tunnel construction process, it is generally necessary to use corresponding types of steel arch frames for initial support of the tunnel according to the properties of the rock mass around the tunnel. Among them, I-beam arch frames are generally used for initial support of IV and V grade surrounding rocks. The construction sequence of I-beam arch frames is to gradually connect them into a ring from top to bottom along the tunnel, and finally close them at the inverted arch. During the construction process, the connection between adjacent (generally adjacent in the annular direction) I-beam arch frames is an important and weak link in the construction. Ensuring the firmness of the connection between I-beams plays a very important role in ensuring the safety of subsequent tunnel construction and improving the construction quality.

[0003] The prior art is to open a plurality of corresponding bolt holes at the edge positions of the two connecting steel plates at the ends of adjacent I-beam arch frames, and make each bolt pass through the corresponding bolt hole on one side and then be screwed with a nut to fasten the two adjacent connecting plates, thereby fixing the adjacent I-beam arch frames. However, when installing the I-beam arch frame, due to the cumulative influence of errors such as the flatness error of the surrounding rock surface, the processing error of the I-beam arch frame, and the manual assembly error, it is very easy to cause the bolt holes of the connecting steel plate of the I-beam arch frame at the arch part and the connecting steel plate of the I-beam arch frame at the side wall to not be accurately aligned, so that the rod of some bolts cannot pass through the bolt holes, making it impossible to lock some positions of the adjacent I-beam arch frames with bolts, or requiring re-drilling holes on site to install bolts. This will inevitably lead to problems such as weak initial support of the tunnel and low construction efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide an I-beam arch quick connection device, aiming to improve the structural strength and construction efficiency of the initial support of the tunnel.

[0005] To achieve the above object, the utility model provides an I-beam arch quick connection device, comprising:

[0006] A positioning column, wherein the positioning column is arranged at an edge position of one side of two adjacent connected steel plates facing away from the other; and

[0007] A locking assembly, the locking assembly includes a locking piece and a first clamping piece and a second clamping piece connected to each other. The gap between the first clamping piece and the second clamping piece forms a bayonet that can be sleeved on the two connected steel plates from the edge. The first clamping piece is formed with a positioning hole that is suitable for the positioning column and can be sleeved on the positioning column. The locking piece is movably screwed to the second clamping piece and can move between a position of being tightly abutted and separated from the other of the two adjacent connected steel plates. When the locking piece is tightly abutted against the other of the two adjacent connected steel plates, the first clamping piece and the locking piece press the two adjacent connected steel plates tightly and fix them.

[0008] The technical solution of the utility model is to prefabricate a positioning column at the edge position of one side of the two adjacent connecting steel plates facing away from the other, and to form a bayonet that can be inserted into the two adjacent connecting steel plates from the edge between the connected first and second clamping parts, and to form a positioning hole that can be sleeved on the positioning part on the first clamping part, and to movably screw a locking part on the second clamping part. During construction, after the first and second clamping parts are sleeved on the two adjacent connecting steel plates and the positioning holes are sleeved on the positioning columns, the locking part is screwed in until it is tightly against the other of the two adjacent connecting steel plates, so that the first clamping part and the locking part can clamp the two adjacent connecting steel plates together, thereby achieving a fixed connection between the two adjacent connecting steel plates. And because the positioning holes and the locking parts are independent of each other and there is no position matching requirement, there is no need for a high degree of alignment between the two adjacent connecting steel plates, so that each locking component can be smoothly locked and connected to the two adjacent connecting steel plates, thereby improving the structural strength and construction efficiency of the initial support of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the cooperation between the locking component and the connecting steel plate;

[0010] Figure 2 is a three-dimensional diagram of a locking assembly;

[0011] Figure 3 is a three-dimensional diagram of a second pressing member;

[0012] Figure 4 It is a three-dimensional diagram of the rotating shaft and the limiting member;

[0013] Figure 5 This is a schematic diagram of multiple I-beam arches connected adjacently in a circular direction. DETAILED DESCRIPTION

[0014] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0016] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0017] The utility model provides an I-beam arch frame quick connection device.

[0018] In the embodiment of the utility model, Figures 1 to 5 As shown, the I-beam arch quick connection device includes a positioning column and a locking assembly.

[0019] Among them, the positioning column 1 is arranged at the edge position of one side of one of the two adjacent connecting steel plates 100 facing away from the other. It can be understood that the two adjacent connecting steel plates 100 are respectively fixed at the ends of the two circumferentially adjacent I-beam arch frames. The connection between the two adjacent I-beam arch frames can be achieved by fixing the two adjacent connecting steel plates 100. The two adjacent I-beam arch frames can be the arch I-beam arch frame and the side wall I-beam arch frame respectively, or they can be I-beam arch frames at other positions of the tunnel. The locking assembly includes a locking piece 4 and a first clamping piece 2 and a second clamping piece 3 connected to each other. The interval between the first clamping piece 2 and the second clamping piece 3 forms a bayonet 200 that can be sleeved on the two connecting steel plates 100 from the edge. The first clamping piece 2 is formed with a positioning hole 11 that is suitable for the positioning column 1 and can be sleeved on the positioning column 1. The locking piece 4 is movably screwed to the second clamping piece 3 and can move between a position of being pressed against and separated from the other of the two adjacent connecting steel plates 100. When the locking piece 4 is pressed against the other of the two adjacent connecting steel plates 100, the first clamping piece 2 and the locking piece 4 press and fix the two adjacent connecting steel plates 100. During construction, after the first pressing member 2 and the second pressing member 3 are sleeved on the two adjacent connecting steel plates 100 and the positioning hole 11 is sleeved on the positioning column 1, the locking member 4 is screwed in until it is tightly against the other of the two adjacent connecting steel plates 100, so that the first pressing member 2 and the locking member 4 can clamp the two adjacent connecting steel plates 100 together to achieve a fixed connection between the two adjacent connecting steel plates 100. And because the positioning hole 11 and the locking member 4 are independent of each other and have no position matching requirements, there is no need for a high degree of alignment between the two adjacent connecting steel plates 100, so that each locking assembly can be smoothly locked and connected with the two adjacent connecting steel plates 100, thereby improving the structural strength and construction efficiency of the initial support of the tunnel.

[0020] It can be understood that each first pressing member 2 is formed with one or more positioning holes 11, and each positioning hole 11 has a corresponding positioning column 1, such as Figure 1 The illustrated example is a case where only one positioning hole 11 is formed on each first pressing member 2 .

[0021] Specifically, the locking member 4 is a rod-shaped structure with external threads, such as a bolt, specifically a hexagonal countersunk bolt, an external hexagonal bolt or a butterfly bolt, etc. Correspondingly, the second pressing member 3 is formed with an internal threaded hole suitable for the locking member 4 .

[0022] Specifically, the first pressing member 2 and the second pressing member 3 are an integrally formed structure, or a split structure formed separately and connected by an intermediate member. When the first pressing member 2 and the second pressing member 3 are an integrally formed structure, the height of the bayonet 200 (understandably, the height of the bayonet 200 is formed by the interval between the first pressing member 2 and the second pressing member 3) is equal to or greater than the sum of the thicknesses of the two adjacent connecting steel plates 100 and the positioning column 1. If the first pressing member 2 and the second pressing member 3 are a split structure formed separately and connected by an intermediate member, the height of the bayonet 200 is equal to or slightly greater than the sum of the thicknesses of the two adjacent connecting steel plates 100.

[0023] Specifically, when the first pressing member 2 and the second pressing member 3 are an integrally formed structure, the two members are integrally formed into a U shape or a C shape. When the first pressing member 2 and the second pressing member 3 are a split-formed structure, the first pressing member 2 and the second pressing member 3 are hinged at one end away from the connecting steel plate 100, so that the first pressing member 2 and the second pressing member 3 can swing between positions where the height of the bayonet 200 is enlarged and reduced, and a limiting structure is also provided between the first pressing member 2 and the second pressing member 3 to limit the height of the bayonet 200 to a predetermined size.

[0024] Specifically, the limiting structure has multiple implementations. In the present embodiment: the first clamping member 2 and the second clamping member 3 include a first main body 21 and a second main body 31 which are spaced apart to form the bayonet 200, and a first extension portion 22 and a second extension portion 32 respectively extending from the first main body 21 and the second main body 31 in a direction away from the connecting steel plate 100, the first extension portion 22 and the second extension portion 32 are hinged at one end away from the connecting steel plate 100 (thereby hinged the first clamping member 2 and the second clamping member 3 together, the end of the first extension portion 22 and the second extension portion 32 away from the connecting steel plate 100 is the end of the first clamping member 2 and the second clamping member 3 away from the connecting steel plate 100), the first extension portion 22 and the second extension portion 32 are formed with relative through holes 300, the limiting structure includes a bolt 51 and a first nut 52, the bolt 51 passes through the through hole 300 and is screwed with the first nut 52 to lock the first clamping member 2 and the second clamping member 3 so that the buckle is in a predetermined height state.

[0025] Specifically, in one embodiment, the through hole 300 is an internal threaded hole adapted to the bolt 51 .

[0026] Specifically, the first main body portion 21 and the second main body portion 31 are L-shaped bending structures arranged in a mirror image, and the first extension portion 22 and the second extension portion 32 extend vertically from the ends of the relatively extended portions of the first main body portion 21 and the second main body portion 31. After the bolt 51 and the first nut 52 are screwed together, the first extension portion 22 and the second extension portion 32 are tightly abutted against each other.

[0027] Specifically, the first main body 21 and the first extension 22, and the second extension 32 and the second main body 31 are respectively welded and connected or integrally formed. The integral forming may be integrally formed by a CNC machine tool or by stamping with a stamping die.

[0028] Specifically, there are multiple groups of locking components, the number of positioning posts 1 corresponds to the positioning holes 11 of the multiple groups of locking components, and are spaced apart along the edge of one side of two adjacent connecting steel plates 100 facing away from the other.

[0029] Specifically, the first pressing member 2 and the second pressing member 3 are hinged at one end away from the connecting steel plate 100 through the rotating shaft 6, and caps 61 are formed at both ends of the rotating shaft 6 to prevent the first pressing member 2 and the second pressing member 3 from being separated from the rotating shaft 6; or the two ends of the rotating shaft 6 are exposed, one end is provided with a cap 61, and the other end is provided with a plug hole 62, and the limiting member 7 can be detachably inserted into the plug hole 62 to prevent the first pressing member 2 and the second pressing member 3 from being separated from the rotating shaft 6. When the caps 61 are provided at both ends of the rotating shaft 6, the first pressing member 2 and the second pressing member 3 cannot be disassembled; when the cap 61 is provided at one end of the rotating shaft 6 and the plug hole 62 is provided at the other end, the limiting member 7 can cooperate with the rotating shaft 6 to realize the rapid hinge and disassembly of the first pressing member 2 and the second pressing member 3.

[0030] Specifically, the limiting member 7 is provided with a V-shaped elastic portion 71, and the two ends of the elastic portion 71 can be forced to approach each other through an external force to pass through the insertion hole 62, so that the limiting member 7 is inserted into the insertion hole 62. After the external force is lost, the two ends of the elastic portion 71 are reset and partially elastically resist the insertion hole 62.

[0031] Specifically, the locking member 4 is also screwed to the second nut 8, and the second nut 8 can move along the locking member 4 between the position of abutting and separating from the second clamping member 3. When the second nut 8 is screwed in to abut against the second clamping member 3, the connection strength between the locking member 4 and the second clamping member 3 can be improved and the locking member 4 can be prevented from loosening.

[0032] It can be understood that each component of the present invention is made of materials with good rigidity and strength, for example, steel or cast steel.

[0033] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An I-beam arch quick connection device, characterized in that: include: A positioning column (1), wherein the positioning column (1) is arranged at an edge position of one side of two adjacent connected steel plates (100) facing away from the other; as well as A locking assembly, the locking assembly comprising a locking member (4) and a first pressing member (2) and a second pressing member (3) connected to each other, the interval between the first pressing member (2) and the second pressing member (3) forming a bayonet (200) which can be sleeved on the edge of two connecting steel plates (100), the first pressing member (2) being formed with a positioning hole (11) which is adapted to a positioning column (1) and can be sleeved on the positioning column (1), the locking member (4) being movably screwed to the second pressing member (3) and being movable between a position of being in close contact with and a position of being separated from the other of the two adjacent connecting steel plates (100), when the locking member (4) is in close contact with the other of the two adjacent connecting steel plates (100), the first pressing member (2) and the locking member (4) press and fix the two adjacent connecting steel plates (100).

2. The I-beam arch quick connection device according to claim 1, characterized in that: The first pressing piece (2) and the second pressing piece (3) are integrally formed structures, or are split structures that are formed separately and connected via an intermediate piece. When the first pressing piece (2) and the second pressing piece (3) are integrally formed structures, the height of the bayonet (200) is equal to or greater than the sum of the thicknesses of the two adjacent connecting steel plates (100) and the positioning column (1).

3. The I-beam arch quick connection device according to claim 2, characterized in that: The first pressing piece (2) and the second pressing piece (3) are hinged at one end away from the connecting steel plate (100), so that the first pressing piece (2) and the second pressing piece (3) can swing between positions where the height of the bayonet (200) is expanded and reduced. A limiting structure is also provided between the first pressing piece (2) and the second pressing piece (3) for limiting the height of the bayonet (200) to a predetermined size.

4. The I-beam arch quick connection device according to claim 3, characterized in that: The first clamping member (2) and the second clamping member (3) comprise a first main body (21) and a second main body (31) which are spaced apart to form the bayonet (200), and a first extension portion (22) and a second extension portion (32) which extend from the first main body (21) and the second main body (31) in a direction away from the connecting steel plate (100), respectively; the first extension portion (22) and the second extension portion (32) are hinged at one end away from the connecting steel plate (100); the first extension portion (22) and the second extension portion (32) are formed with opposite through holes (300); the limiting structure comprises a bolt (51) and a first nut (52); the bolt (51) passes through the through hole (300) and is screwed to the first nut (52).

5. The I-beam arch quick connection device according to claim 4, characterized in that: The first main body portion (21) and the second main body portion (31) are L-shaped bent structures arranged in a mirror image, the first extension portion (22) and the second extension portion (32) extend vertically from the ends of the first main body portion (21) and the second main body portion (31) relative to the extension portion, and after the bolt (51) and the first nut (52) are screwed together, the first extension portion (22) and the second extension portion (32) are tightly abutted against each other.

6. The I-beam arch quick connection device according to claim 5, characterized in that: The first main body portion (21) and the first extension portion (22), and the second extension portion (32) and the second main body portion (31) are respectively welded together or integrally formed.

7. The I-beam arch quick connection device according to claim 1, characterized in that: There are multiple groups of locking components, the number of positioning columns (1) corresponds to the positioning holes (11) of the multiple groups of locking components, and they are arranged at intervals along the edge of one side of two adjacent connecting steel plates (100) facing away from the other.

8. The I-beam arch quick connection device according to claim 3, characterized in that: The first pressing member (2) and the second pressing member (3) are hingedly connected at one end away from the connecting steel plate (100) via a rotating shaft (6), both ends of the rotating shaft (6) are exposed, one end is provided with a cap (61), and the other end is provided with an insertion hole (62), and the limiting member (7) is detachably inserted into the insertion hole (62) to prevent the first pressing member (2) and the second pressing member (3) from being separated from the rotating shaft (6).

9. The I-beam arch quick connection device according to claim 8, characterized in that: The limiting member (7) is provided with a V-shaped elastic portion (71), and an external force can be used to force two ends of the elastic portion (71) to approach each other so as to pass through the insertion hole (62), thereby inserting the limiting member (7) into the insertion hole (62); after the external force is removed, the two ends of the elastic portion (71) are reset and a part of the elastic portion is elastically abutted against the insertion hole (62).

10. The I-beam arch quick connection device according to claim 1, characterized in that: The locking member (4) is also screwed with a second nut (8), and the second nut (8) can move along the locking member (4) between a position of abutting against and separating from the second pressing member (3).

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