Positioning fixture for expanding arch springing

Abstract

The utility model provides a positioning fixture for expanding arch feet, and belongs to the field of tunnel construction. The positioning fixture aims to solve the problems that in the prior art, an expanded arch foot positioning fixture is complex in structure and time-consuming and labor-consuming to operate. Comprising an outer frame, outer supporting assemblies and inner supporting assemblies, the side face of the outer frame is connected with at least one outer supporting assembly, the inner supporting assemblies are arranged in the outer frame, and the surface, away from the outer supporting assemblies, of the outer frame and the surface, away from the outer supporting assemblies, of the inner supporting assemblies are coplanar. The technical effects are that the clamp mainly utilizes the frame and the inner support assembly to detect, utilizes the outer support assembly to place and fix, does not need to use an adjusting mechanism, a positioning device, an auxiliary part and other structures, is simple in structure, and is convenient and fast to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an expanded arch foot positioning fixture. Background Art

[0002] During tunnel excavation construction, the expansion of the arch foot is carried out by manual cooperation with mechanical operations. The control accuracy of the inner side of the expanded arch foot set to improve the bearing capacity of the arch foot is insufficient, and the over-excavation and under-excavation phenomenon is serious. Therefore, the expansion arch foot positioning fixture is used to ensure the accuracy of the expanded arch foot. The fixture used for precision control of the expanded arch foot in the existing technology usually includes basic fixing components, connecting parts, adjustment mechanisms, positioning devices and auxiliary components. The structure is relatively complex and the operation is relatively time-consuming and labor-intensive. Utility Model Content

[0003] The utility model provides an enlarged arch foot positioning fixture, which is used to solve the defects of the enlarged arch foot positioning fixture in the prior art that the structure is relatively complex and the operation is relatively time-consuming and labor-intensive, and realizes a relatively simple structure and relatively convenient and quick operation.

[0004] The utility model provides an expanded arch foot positioning fixture, comprising an outer frame, an outer support assembly and an inner support assembly. At least one outer support assembly is connected to the side of the outer frame, an inner support assembly is arranged inside the outer frame, and the surface of the outer frame facing away from the outer support assembly is coplanar with the surface of the inner support assembly facing away from the outer support assembly.

[0005] According to the positioning fixture of the present invention, the outer frame can be prevented from being deformed by the arrangement of the inner support assembly. The arrangement of the outer support assembly can further increase the strength of the outer frame while the outer support assembly can be used as a handle for easy manual operation. The arrangement of the surface of the outer frame away from the outer support assembly and the surface of the inner support assembly away from the outer support assembly being coplanar allows the outer frame and the inner support assembly to be kept in the same horizontal plane. When the operator uses this fixture, the surface of the outer frame away from the outer support assembly is fitted to the position where the expanded arch foot needs to be positioned, and the forward position and over-excavation position can be visually seen. The excavation quality and the sprayed concrete loss caused by over-excavation and under-excavation can be effectively controlled, effectively solving the problems of over-excavation and under-excavation control of traditional mechanical excavation, time-consuming and labor-intensive adjustment, inconsistent protective layer sizes, large errors, and excessive consumption. In addition, the present device mainly utilizes the frame and inner support assembly for detection, and utilizes the outer support assembly for placement and fixation. There is no need to use adjustment mechanisms, positioning devices, auxiliary components, and other structures. The structure is relatively simple and the operation is relatively convenient and quick.

[0006] In addition, the expanded arch foot positioning fixture according to the present invention may also have the following additional technical features:

[0007] In some embodiments of the present invention, the inner support assembly includes an inner connecting member and a diagonal support member;

[0008] One end of the inner connecting member is connected to the diagonal support member, the other end of the inner connecting member is connected to the first inner side wall of the outer frame, and the end of the diagonal support member facing away from the inner connecting member is connected to the second inner side wall of the outer frame;

[0009] The surface of the inner connecting member facing away from the outer supporting assembly and the surface of the diagonal bracing member facing away from the outer supporting assembly are both coplanar with the surface of the outer frame facing away from the outer supporting assembly.

[0010] By adopting the above embodiment, the setting of the diagonal bracing members can support the internal connecting members; the setting of the internal connecting members and the diagonal bracing members can also make a certain hollow surface exist in the outer frame. While ensuring the supporting strength of the outer frame, it is possible to realize the detection of multiple points of the expanded arch foot, and the position of over-excavation and under-excavation of the expanded arch foot can be seen more intuitively, making the operation more convenient and quick.

[0011] In some embodiments of the present invention, the inner support assembly further includes a triangular support member, the triangular support member is connected between the inner connecting member and the diagonal support member, and the surface of the triangular support member facing away from the outer support assembly is coplanar with the surface of the outer frame facing away from the outer support assembly.

[0012] By adopting the above embodiment, the setting of the triangular support makes the setting of the connecting part in the outer frame more stable, and at the same time enables the positioning fixture to perform multi-point detection of the arch foot more comprehensively, and more intuitively see the position of over-excavation and under-excavation of the expanded arch foot.

[0013] In some embodiments of the present invention, the outer support assembly includes at least two vertical tubes, and the at least two vertical tubes are spaced apart and arranged on the side of the outer frame.

[0014] By adopting the above embodiment, the provision of the vertical pipe can provide better external support for the clamp.

[0015] In some embodiments of the present invention, the outer support assembly further includes a crossbeam, and in at least two vertical tubes, a crossbeam is provided between at least one group of two adjacent vertical tubes.

[0016] By adopting the above embodiment, the provision of the crossbeam can increase the convenience of picking up and testing the fixture.

[0017] In some embodiments of the present invention, the outer support assembly further includes a handle, and the handle is provided on a side of the crossbeam facing away from the outer frame.

[0018] By adopting the above embodiment, the provision of the handle makes the picking up operation of the clamp more convenient.

[0019] In some embodiments of the present invention, at least two vertical pipes are parallel to each other.

[0020] In some embodiments of the present invention, the triangular support member includes a plurality of support rods, which are connected in sequence from head to tail, and the plurality of support rods are all connected between the inner connecting member and the outer frame.

[0021] By adopting the above embodiment, multiple support rods are provided to achieve measurement of multiple positions of the arch foot, and a reciprocating wave line is formed inside by connecting them in sequence, which ensures that the detection is as comprehensive as possible while allowing staff to see it more intuitively.

[0022] In some embodiments of the present invention, the inner connecting member includes a plurality of connecting rods, and the plurality of connecting rods are sequentially connected from the beginning to the end;

[0023] A connecting rod is connected between the support rod at the head end and the first inner side wall of the outer frame, and the connecting rod at the tail end is connected to the diagonal support member;

[0024] Among the remaining connecting rods, a connecting rod is provided between every two adjacent support rods.

[0025] By adopting the above embodiment, the connection of the multiple support rods is made more stable through the provision of the multiple connecting rods.

[0026] In some embodiments of the present invention, the diagonal support member includes a first diagonal support rod and a second diagonal support rod. The first diagonal support rod, the second diagonal support rod and the inner side wall of the outer frame are connected end to end in sequence to form a triangle. The first diagonal support rod and / or the second diagonal support rod are connected to the connecting rod located at the tail end.

[0027] By adopting the above embodiment, the first diagonal support rod, the second diagonal support rod and the inner side wall of the outer frame are connected end to end in sequence to form a triangular arrangement. In combination with the connecting rod, the stability of the fixture can be guaranteed while saving materials.

[0028] In summary, this application has the following beneficial technical effects:

[0029] First, the arrangement of the inner support assembly can prevent the outer frame from being deformed.

[0030] Second, the provision of the outer support assembly can further increase the strength of the outer frame and at the same time the outer support assembly can be used as a handle to facilitate manual operation.

[0031] Third, by setting the surface of the outer frame away from the outer support assembly and the surface of the inner support assembly away from the outer support assembly to be coplanar, the outer frame and the inner support assembly are kept in the same horizontal plane. When the operator uses this clamp, the surface of the outer frame away from the outer support assembly is attached to the position where the arch foot needs to be expanded, and the forward position and over-excavation position can be intuitively seen. The excavation quality and the loss of sprayed concrete caused by over-excavation and under-excavation can be effectively controlled, and the problems of over-excavation and under-excavation control of traditional mechanical excavation, time-consuming and labor-intensive adjustment, inconsistent protective layer size, large errors and excessive consumption are effectively solved.

[0032] Fourth, the fixture mainly utilizes the frame and inner support components for detection, and utilizes the outer support components for placement and fixation. It does not require the use of adjustment mechanisms, positioning devices, auxiliary components and other structures. The structure is relatively simple and the operation is relatively convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0034] Figure 1 The first perspective view schematically shows a perspective view of an enlarged abutment positioning fixture according to some embodiments of the present invention.

[0035] Figure 2 A second perspective view schematically illustrates an enlarged abutment positioning fixture according to some embodiments of the present invention.

[0036] Figure 3 A first view of an abutment enlargement positioning fixture without a crossbeam according to some embodiments of the present invention is schematically shown.

[0037] Figure 4 A second view of the expanded abutment positioning fixture without a crossbeam according to some embodiments of the present invention is schematically shown.

[0038] Figure 5 A third view schematically illustrates an abutment foot enlargement positioning fixture without a crossbeam according to some embodiments of the present invention.

[0039] Reference numerals:

[0040] 1. Outer frame, 11. First cross bar, 12. Second cross bar, 13. First vertical bar, 14. Second vertical bar, 2. Vertical tube, 3. Triangular support member, 31. First support bar, 32. Second support bar, 33. Third support bar, 34. Fourth support bar, 35. Fifth support bar, 36. Sixth support bar, 37. Seventh support bar, 38. Eighth support bar, 4. Inner connecting member, 41. First connecting bar, 42. Second connecting bar, 43. Third connecting bar, 44. Fourth connecting bar, 45. Fifth connecting bar, 5. Diagonal bracing member, 51. First diagonal bracing bar, 52. Second diagonal bracing bar, 53. Third diagonal bracing bar, 6. Crossbeam, 7. Handle. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0042] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "the" as used in the text may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0043] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0044] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," etc. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented rotated 90 degrees or in other orientations and the spatially relative descriptors used herein are interpreted accordingly.

[0045] like Figures 1 to 5 As shown, according to an embodiment of the first aspect of the present utility model, an expanded arch foot positioning fixture is proposed, comprising an outer frame 1, an outer support assembly and an inner support assembly, at least one outer support assembly is connected to the side of the outer frame 1, an inner support assembly is arranged inside the outer frame 1, and the surface of the outer frame 1 facing away from the outer support assembly is coplanar with the surface of the inner support assembly facing away from the outer support assembly.

[0046] In the above embodiment, it should be noted that a hollow structure is provided in the inner support assembly to enable more intuitive viewing of the over-excavation and under-excavation positions of the expanded arch foot.

[0047] The technical effects achieved by the above embodiment are as follows: First, the outer frame 1 can be prevented from being deformed by the arrangement of the inner support assembly.

[0048] Second, the provision of the outer support assembly can further increase the strength of the outer frame 1 and at the same time the outer support assembly can be used as a handle to facilitate manual operation.

[0049] Third, by setting the surface of the outer frame 1 away from the outer support assembly and the surface of the inner support assembly away from the outer support assembly to be coplanar, the outer frame 1 and the inner support assembly are kept in the same horizontal plane. When the operator uses this clamp, the surface of the outer frame 1 away from the outer support assembly is attached to the position where the arch foot needs to be expanded, and the forward position and the over-excavation position can be intuitively seen. The excavation quality and the loss of sprayed concrete caused by over-excavation and under-excavation can be effectively controlled, and the problems of over-excavation and under-excavation control of traditional mechanical excavation, time-consuming and labor-intensive adjustment, inconsistent protective layer size, large errors and excessive consumption are effectively solved.

[0050] Fourth, the device mainly utilizes a frame and inner support components for detection, and utilizes outer support components for placement and fixation, without the need for adjustment mechanisms, positioning devices, auxiliary components and other structures. The structure is relatively simple, and the operation is relatively convenient and quick.

[0051] Optional, such as Figures 1 to 5 As shown, the inner support assembly includes an inner connecting member 4 and a diagonal supporting member 5; one end of the inner connecting member 4 is connected to the diagonal supporting member 5, the other end of the inner connecting member 4 is connected to the first inner side wall of the outer frame 1, and the end of the diagonal supporting member 5 facing away from the inner connecting member 4 is connected to the second inner side wall of the outer frame 1; the surface of the inner connecting member 4 facing away from the outer support assembly and the surface of the diagonal supporting member 5 facing away from the outer support assembly are both coplanar with the surface of the outer frame 1 facing away from the outer support assembly.

[0052] The inner support assembly further includes a triangular support member 3, which is connected between the inner connecting member 4 and the diagonal support member 5. The surface of the triangular support member 3 facing away from the outer support assembly is coplanar with the surface of the outer frame 1 facing away from the outer support assembly.

[0053] The triangular support member 3 includes a plurality of support rods, which are connected in sequence from the beginning to the end, and are all connected between the inner connecting member 4 and the outer frame 1 .

[0054] The inner connecting member 4 includes a plurality of connecting rods, which are connected in sequence from the beginning to the end;

[0055] A connecting rod is connected between the support rod at the head end and the first inner side wall of the outer frame 1, and the connecting rod at the tail end is connected to the diagonal support member 5;

[0056] Among the remaining connecting rods, a connecting rod is provided between every two adjacent support rods.

[0057] The diagonal support member 5 includes a first diagonal support rod 51 and a second diagonal support rod 52. The first diagonal support rod 51, the second diagonal support rod 52 and the inner side wall of the outer frame are connected end to end to form a triangle. The first diagonal support rod 51 and / or the second diagonal support rod 52 are connected to the connecting rod at the tail end.

[0058] In the above optional embodiments, it should be noted that the multiple support rods, multiple connecting rods, the first diagonal support rod 51, the second diagonal support rod 52 and the outer frame are connected individually and to each other by welding, clamping or bonding.

[0059] The outer frame 1 includes a first cross bar 11, a second cross bar 12, a first vertical bar 13 and a second vertical bar 14. The first cross bar 11, the second cross bar 12, the first vertical bar 13 and the second vertical bar 14 are connected and combined in sequence to form a quadrilateral. The first inner side wall of the outer frame 1 is the inner side wall of the first vertical bar 13, the second inner side wall of the outer frame 1 is the inner side wall of the second vertical bar 14, and the third inner side wall of the outer frame 1 is the inner side wall of the first cross bar 11.

[0060] The number of support rods can be three, four, five, six, seven, eight, nine, ten or more, and the number of connecting rods can be three, four, five, six, seven or more.

[0061] Taking the example of eight support rods and five connecting rods, the eight support rods are the first support rod 31, the second support rod 32, the third support rod 33, the fourth support rod 34, the fifth support rod 35, the sixth support rod 36, the seventh support rod 37 and the eighth support rod 38, and the five connecting rods are the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, the fourth connecting rod 44 and the fifth connecting rod 45. The first connecting rod 41 is the connecting rod located at the tail end, the fifth connecting rod 45 is the connecting rod located at the head end, the first support rod 31 is the support rod located at the tail end, and the eighth support rod 38 is the support rod located at the head end. The first support rod 31, the second support rod 32 and the first cross bar 11 form a triangle, the second support rod 32, the third support rod 33 and the second connecting rod 43 form a triangle, and so on.

[0062] The beneficial effects of the above optional embodiment are: by using multiple connecting rods, multiple supporting rods and the arrangement of the first diagonal support rod 51 and the second diagonal support rod 52, the stability of the fixture is ensured while measuring multiple positions of the arch foot, thereby ensuring that the detection is as comprehensive as possible and allowing the staff to see it more intuitively, thereby increasing the convenience of detection.

[0063] Optional, such as Figures 1 to 5 As shown, the outer support assembly includes at least two vertical tubes 2 , and the at least two vertical tubes 2 are spaced apart and arranged on the side of the outer frame 1 .

[0064] The outer support assembly further includes a crossbeam 6 . In at least two vertical tubes 2 , a crossbeam 6 is provided between at least one group of two adjacent vertical tubes 2 .

[0065] The outer support assembly further includes a handle 7 , and a handle 7 is provided on a side of the crossbeam 6 facing away from the outer frame 1 .

[0066] Optional, such as Figure 2 and Figure 3 As shown, at least two vertical pipes 2 are parallel to each other.

[0067] In the above optional embodiment, it should be noted that the bottom surfaces of at least two vertical tubes 2 are coplanar so that the fixture can be placed upright when in use.

[0068] The beneficial effect of the above optional embodiment is that the arrangement of the handle 7 and the crossbeam 6 makes the picking up operation of the clamp more convenient.

[0069] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A positioning fixture for enlarging an arch foot, characterized in that: The invention comprises an outer frame (1), an outer support assembly and an inner support assembly, wherein at least one outer support assembly is connected to a side surface of the outer frame (1), the inner support assembly is arranged inside the outer frame (1), and the surface of the outer frame (1) facing away from the outer support assembly is coplanar with the surface of the inner support assembly facing away from the outer support assembly.

2. The expanded arch foot positioning fixture according to claim 1, characterized in that: The inner support assembly comprises an inner connecting member (4) and an oblique support member (5); One end of the inner connecting member (4) is connected to the diagonal support member (5), the other end of the inner connecting member (4) is connected to the first inner side wall of the outer frame (1), and the end of the diagonal support member (5) facing away from the inner connecting member (4) is connected to the second inner side wall of the outer frame (1); The surface of the inner connecting member (4) facing away from the outer supporting assembly and the surface of the diagonal supporting member (5) facing away from the outer supporting assembly are both coplanar with the surface of the outer frame (1) facing away from the outer supporting assembly.

3. The expanded arch foot positioning fixture according to claim 2, characterized in that: The inner support assembly further comprises a triangular support member (3), the triangular support member (3) being connected between the inner connecting member (4) and the diagonal support member (5), and the surface of the triangular support member (3) facing away from the outer support assembly being coplanar with the surface of the outer frame (1) facing away from the outer support assembly.

4. The expanded arch foot positioning fixture according to claim 1, characterized in that: The outer support assembly comprises at least two vertical pipes (2), and the at least two vertical pipes (2) are arranged at intervals on the side of the outer frame (1).

5. The expanded arch foot positioning fixture according to claim 4, characterized in that: The outer support assembly further comprises a crossbeam (6), and in at least two of the vertical tubes (2), the crossbeam (6) is provided between at least one group of two adjacent vertical tubes (2).

6. The expanded arch foot positioning fixture according to claim 5, characterized in that: The outer support assembly further comprises a handle (7), and the handle (7) is provided on a side of the crossbeam (6) facing away from the outer frame (1).

7. The enlarged arch foot positioning fixture according to any one of claims 4 to 6, characterized in that: At least two of the vertical pipes (2) are parallel to each other.

8. The expanded arch foot positioning fixture according to claim 3, characterized in that: The triangular support member (3) comprises a plurality of support rods, the plurality of support rods being connected in sequence from head to tail, and the plurality of support rods being connected between the inner connecting member (4) and the outer frame (1).

9. The expanded arch foot positioning fixture according to claim 3, characterized in that: The inner connecting member (4) comprises a plurality of connecting rods, and the plurality of connecting rods are connected in sequence from the beginning to the end; A connecting rod is connected between the support rod at the head end and the first inner side wall of the outer frame (1), and the connecting rod at the tail end is connected to the diagonal support member (5); Among the remaining connecting rods, one connecting rod is provided between every two adjacent support rods.

10. The expanded arch foot positioning fixture according to claim 9, characterized in that: The diagonal bracing member (5) comprises a first diagonal bracing rod (51) and a second diagonal bracing rod (52); the first diagonal bracing rod (51), the second diagonal bracing rod (52) and the inner side wall of the outer frame are connected end to end in sequence to form a triangle; the first diagonal bracing rod (51) and / or the second diagonal bracing rod (52) are connected to the connecting rod at the tail end.

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