Device for butt joint of steel pipes in pipe jacking well

Abstract

The utility model discloses a device for butt joint of steel pipes in a pipe jacking well, belongs to the technical field of steel bar butt joint, and solves the problem that the strength of a welding joint is easily reduced due to welding defects in the prior art. The device comprises inner clamping pieces matched with steel bars at all ends, and outer clamping pieces for fixing the inner clamping pieces on the steel bars in butt joint pairwise, the inner clamping piece comprises a first external thread clamping piece, a second external thread clamping piece matched with the first external thread clamping piece to clamp a reinforcing steel bar, and a first nut matched with the first external thread clamping piece and the second external thread clamping piece; the outer clamping piece comprises an outer thread clamping piece A, an outer thread clamping piece B matched with the outer thread clamping piece A and used for clamping the inner clamping piece, and a second nut matched with the outer thread clamping piece A and the outer thread clamping piece B. The steel pipe butt joint device is used for butt joint of steel pipes in the pipe-jacking well.

Description

Technical Field

[0001] A device for butt - jointing steel pipes in a pipe - jacking well, which is used for butt - jointing steel pipes in a pipe - jacking well and belongs to the technical field of steel bar butt - jointing. Background Art

[0002] The pipe - jacking well is an important part of pipe - jacking construction. It is a well - shaped structure excavated during the laying of underground pipelines for pipe - jacking operations. Pipe - jacking wells are usually located at the starting and ending points of pipe - jacking construction, which are respectively called the working well and the receiving well.

[0003] The working well is the starting point of pipe - jacking operation. Its main function is to accommodate pipe - jacking equipment and construction personnel and provide enough space for pipe - jacking operations. The size and depth of the working well depend on specific construction requirements, including factors such as the diameter of the pipeline, the jacking distance, the groundwater level, and geological conditions.

[0004] The receiving well is the ending point of pipe - jacking operation, which is used to receive the pipe - jacking machine and the pipeline. After the pipe - jacking operation is completed, the receiving well is usually filled or used as an inspection well.

[0005] The construction of pipe - jacking wells needs to consider various factors, including groundwater level, geological stability, and the protection of surrounding buildings and facilities. During the construction process, a series of measures also need to be taken to ensure the safety and efficiency of construction, such as setting up support structures, drainage systems, etc.

[0006] The butt - jointing of steel pipes in a pipe - jacking well refers to connecting two or more sections of steel pipes inside the pipe - jacking well during pipe - jacking construction to form a complete pipeline. This kind of butt - joint usually occurs in the working well or the receiving well, or when it is necessary to extend the pipeline length in a segmented manner.

[0007] However, the steel bars in the existing technology are butt - jointed by welding, and there are the following technical problems:

[0008] 1. The problem that the strength of the welded joint is reduced easily due to welding defects;

[0009] 2. It is impossible to effectively ensure the precise alignment of the dimensions of two steel bars, thus easily causing poor butt - jointing effects. Content of the Utility Model

[0010] The purpose of the present utility model is to provide a device for butt - jointing steel pipes in a pipe - jacking well, and solve the problem that the strength of the welded joint is reduced easily due to welding defects in the existing technology.

[0011] In order to achieve the above - mentioned purpose, the technical solution adopted by the present utility model is as follows:

[0012] A device for butt - jointing steel pipes in a pipe - jacking well, comprising inner clamping members that cooperate with the steel bars at each end, and outer clamping members that fix the inner clamping members on the two butt - jointed steel bars;

[0013] The inner clamping member includes a first externally - threaded clamping piece, a second externally - threaded clamping piece that cooperates with the first externally - threaded clamping piece to clamp the steel bar, and a first nut that cooperates with the first externally - threaded clamping piece and the second externally - threaded clamping piece;

[0014] The outer clamping member includes an externally - threaded clamping piece A, an externally - threaded clamping piece B that cooperates with the externally - threaded clamping piece A to clamp the inner clamping member, and a second nut that cooperates with the externally - threaded clamping piece A and the externally - threaded clamping piece B.

[0015] Furthermore, a limiting piece for limiting the second externally - threaded clamping piece and the first nut is provided at one end of the first externally - threaded clamping piece.

[0016] Furthermore, the externally - threaded clamping piece A and the externally - threaded clamping piece B include a clamping section A at both ends that respectively cooperates with the two butt - jointed steel bars, a clamping section B connected to the clamping section A to clamp the first externally - threaded clamping piece or the second externally - threaded clamping piece, and a clamping section C connected to the clamping sections B at both ends to clamp the first nut and the limiting piece on the two inner clamping members;

[0017] The second nut cooperates with the clamping section A.

[0018] Furthermore, it further includes an inner ring;

[0019] The externally - threaded clamping piece A is arranged on the inner ring; or

[0020] Along the circumferential direction of the first nut, multiple positioning rods are arranged on any one first nut or two first nuts;

[0021] Perforations that cooperate with the positioning rods are provided on the clamping section C.

[0022] Furthermore, connecting blocks are equidistantly arranged on the inner ring, and the connecting blocks are connected to the externally - threaded clamping piece A.

[0023] Furthermore, the first nut and the limiting piece are of a cylindrical structure.

[0024] Compared with the prior art, the advantages of the present utility model are as follows:

[0025] First, the present utility model fixes the first externally - threaded clamping piece, the second externally - threaded clamping piece, and the first nut of the inner clamping member at the ends of each butt - jointed steel bar, and then fixes the butt - jointed steel bars and the inner clamping member through the externally - threaded clamping piece A, the externally - threaded clamping piece B, and the second nut of the outer clamping member to precisely control the alignment of the steel bars, reduce stress concentration and structural weaknesses caused by poor butt - jointing, and at the same time improve the construction efficiency of steel bar butt - jointing, that is, avoid the problem of reduced strength of the welded joint easily caused by welding defects;

[0026] Second, the limit piece in the present utility model can ensure that the first externally threaded clamping piece, the second externally threaded clamping piece and the first nut maintain the correct relative positions during the operation process, prevent the structural instability caused by the position movement, and at the same time, the alignment and clamping force of the steel bars can be precisely controlled through the limit piece, thereby improving the docking accuracy and ensuring the quality of the steel bar joints;

[0027] Third, the externally threaded clamping member A and the externally threaded clamping member B in the present utility model include two clamping sections A, two clamping sections B and one clamping section C, which can precisely control the butt-jointed steel bars and the internal clamping members on the butt-jointed steel bars to be aligned and fixed in each clamping section, and are fixed by the second nut to ensure the docking accuracy, thereby improving the quality of the steel bar joints;

[0028] Fourth, the present utility model sets the externally threaded clamping member A on the inner ring to improve the stability of the entire docking device, that is, to fix the steel bar in the correct position during the docking process. The method of matching the positioning rod and the perforation is to ensure that the external clamping member can be quickly fixed on the internal clamping member, and achieve the purpose of improving the docking accuracy and the quality of the steel bar joints;

[0029] Fifth, the connecting blocks in the present utility model are equally spaced on the inner ring, which can ensure that the externally threaded clamping member A is evenly distributed on the inner ring, so that the load during the docking process is more evenly transmitted to the steel bar, reducing the deformation or damage caused by uneven load;

[0030] Sixth, the purpose of the present utility model to define the first nut and the limit piece as cylindrical structures is to avoid using other shapes, which are prone to problems such as rotation errors that cannot be matched with the groove of the clamping section C or are difficult to match. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the present utility model for butt-jointing steel pipes by setting the externally threaded clamping member A on the inner ring;

[0033] Figure 2 It is a schematic diagram of the present utility model for butt-jointing steel bars by setting the positioning rod and passing through;

[0034] Figure 3 It is a schematic diagram of the structure of the internal clamping member and the steel bar in the present utility model;

[0035] Figure 4 This is a schematic structural view of the external-thread clamping member A in the present utility model, where a connecting block is provided and cooperates with the external-thread clamping member B;

[0036] In the figure: 1 - inner clamping member, 2 - outer clamping member, 3 - first external-thread clamping piece, 4 - second external-thread clamping piece, 5 - steel bar, 6 - first nut, 7 - external-thread clamping member A, 8 - external-thread clamping member B, 9 - second nut, 10 - clamping section A, 11 - clamping section B, 12 - clamping section C, 13 - limiting piece, 14 - inner ring, 15 - positioning rod, 16 - through hole, 17 - connecting block. Specific embodiments

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0040] In addition, if terms such as "first", "second", "third", etc. are used only for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] In addition, if terms such as "horizontal", "vertical", "hanging" are used, it does not mean that the component is required to be absolutely horizontal or hanging, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0042] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, terms such as "set", "installed", "connected", "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] It should be noted that, without conflict, the features in the embodiments of the present utility model can be combined with each other.

[0044] Embodiment 1

[0045] In order to solve the problem that in the prior art, the strength of the welded joint is easily reduced due to welding defects. As Figures 1-4 shown, a device for butt - jointing steel pipes in a jacking pipe well is provided, which includes an inner clamping member 1 that cooperates with the reinforcing bars at each end, and an outer clamping member 2 that fixes the inner clamping members 1 on the two butt - jointing reinforcing bars; the inner clamping member 1 includes a first external - thread clip 3, a second external - thread clip 4 that cooperates with the first external - thread clip 3 to clamp the reinforcing bar 5, and a first nut 6 that cooperates with the first external - thread clip 3 and the second external - thread clip 4; the outer clamping member 2 includes an external - thread clip member A7 and an external - thread clip member B8 that cooperates with the external - thread clip member A7 to clamp the inner clamping member, and a second nut 9 that cooperates with the external - thread clip member A7 and the external - thread clip member B8.

[0046] In practice, for a group of butt - jointing reinforcing bars, first, the two inner clamping members 1 are respectively fixed at the butt - joint ends of the reinforcing bars through the first external - thread clip, the second external - thread clip, and the first nut. After fixation, the outer clamping member 2 is used to clamp the butt - jointing reinforcing bars and the two inner clamping members 1 through the external - thread clip member A7 and the external - thread clip member B8, and is fixed through the second nut 9, thus realizing the butt - joint of the reinforcing bars. This embodiment can accurately control the alignment of the reinforcing bars, reduce stress concentration and structural weaknesses caused by poor butt - jointing, and at the same time improve the construction efficiency of the butt - jointing of the reinforcing bars, that is, avoid the problem that the strength of the welded joint is easily reduced due to welding defects.

[0047] Embodiment 2

[0048] On the basis of Embodiment 1, a limiting piece 13 for limiting the second external-thread clamping piece 4 and the first nut 6 is provided at one end of the first external-thread clamping piece 3. When the inner clamping piece 1 cooperates with the steel bar, first put the first nut on the steel bar, then clamp the first external-thread clamping piece 3 on the steel bar, and make the limiting piece 13 contact with the end of the steel bar. Then clamp the second external-thread clamping piece 4 on the steel bar and make one end of it contact with the limiting piece. Finally, rotate and fix the first nut on the first external-thread clamping piece 3 and the second external-thread clamping piece 4 until it contacts the limiting piece. The limiting piece in this embodiment can ensure that the first external-thread clamping piece, the second external-thread clamping piece and the first nut maintain the correct relative positions during the operation, prevent the structural instability caused by position movement, and at the same time, the alignment and clamping force of the steel bar can be accurately controlled through the limiting piece, so as to improve the docking accuracy and ensure the quality of the steel bar joint.

[0049] Embodiment 3

[0050] On the basis of Embodiment 2, the external-thread clamping piece A7 and the external-thread clamping piece B8 include a clamping section A10 located at both ends and cooperating with the two butt-jointed steel bars respectively, a clamping section B11 connected to the clamping section A10 and clamping the first external-thread clamping piece 3 or the second external-thread clamping piece 4, and a clamping section C12 connected to the clamping sections B11 at both ends and clamping the first nut 6 and the limiting piece 13 on the two inner clamping pieces 1; the second nut 9 cooperates with the clamping section A10.

[0051] In practice, after the two inner clamping pieces 1 are respectively fixed on the butt-jointed steel bars, the two clamping sections A, the two clamping sections B and one clamping section C of the external-thread clamping piece A7 and the external-thread clamping piece B8 are respectively cooperated with the two steel bars, the first external-thread clamping piece 3 and the second external-thread clamping piece 4, and the two first nuts 6 and the limiting piece 13, and are fixed by cooperating with the clamping section A10 through the second thread. The external-thread clamping piece A and the external-thread clamping piece B in this embodiment include two clamping sections A, two clamping sections B and one clamping section C, which can accurately control the butt-jointed steel bars and the inner clamping pieces on the butt-jointed steel bars to be aligned and fixed in each clamping section, and are fixed by the second nut, ensuring the docking accuracy, thereby improving the quality of the steel bar joint.

[0052] Embodiment 4

[0053] On the basis of Embodiment 3, an inner ring 14 is further included; the external-thread clamping piece A7 is arranged on the inner ring 14; in practice, first put the second nut on each butt-jointed steel bar, fix the inner clamping piece 1 on the steel bar to be butt-jointed (the butt-jointed steel bar), then place the inner ring with the external-thread clamping piece A7 on the inner side of the steel bar, place each steel bar and the inner clamping piece on the external-thread clamping piece A7, and then cooperate the external-thread clamping piece B8 with the external-thread clamping piece A7 and fix it through the second nut.

[0054] Or

[0055] Along the circumferential direction of the first nut 6, multiple positioning rods 15 are provided on any one of the first nuts 6 or both first nuts 6; perforations 16 that cooperate with the positioning rods 15 are provided on the clamping section C12. In practice, first put on the second nuts on each butt-jointed steel bar, fix the inner clamping member 1 on the steel bar to be butt-jointed (the butt-jointed steel bar), then correspondingly pass the perforations on the external thread clamping member A7 and the external thread clamping member B8 through the positioning rods for precise cooperation, and finally fix the external thread clamping member A7 and the external thread clamping member B8 with the second nuts.

[0056] In this embodiment, the external thread clamping member A is arranged on the inner ring to improve the stability of the entire butt-joint device, that is, to enable the steel bar to be fixed in the correct position during the butt-joint process. The method of using the cooperation of the positioning rod and the perforation is to ensure that the external clamping member can be quickly fixed on the inner clamping member, and achieve the purpose of improving the butt-joint accuracy and the quality of the steel bar joint.

[0057] Embodiment 5

[0058] On the basis of Embodiment 4, connecting blocks 17 are equidistantly arranged on the inner ring 14, and the connecting blocks 17 are connected to the external thread clamping member A7. The equidistant arrangement of the connecting blocks on the inner ring can ensure the uniform distribution of the external thread clamping member A on the inner ring, so that the load during the butt-joint process is more evenly transmitted to the steel bar, reducing deformation or damage caused by uneven load.

[0059] Embodiment 6

[0060] On the basis of Embodiment 4, the first nut 6 and the limiting piece 13 are of cylindrical structures. The purpose of defining the first nut and the limiting piece as cylindrical structures is to avoid problems that other shapes are likely to cause rotation errors, resulting in inability to cooperate with the groove body of the clamping section C or difficult cooperation.

Claims

1. A device for butt jointing steel pipes in a pipe jacking well, characterized in that: It comprises an inner clamping piece (1) matched with the steel bars at each end, and an outer clamping piece (2) fixing the inner clamping piece (1) on the steel bars butted against each other; The inner clamping member (1) comprises a first externally threaded clamping piece (3), a second externally threaded clamping piece (4) that cooperates with the first externally threaded clamping piece (3) to clamp the steel bar (5), and a first nut (6) that cooperates with the first externally threaded clamping piece (3) and the second externally threaded clamping piece (4); The outer clamping member (2) comprises an outer thread clamping member A (7), an outer thread clamping member B (8) which matches with the outer thread clamping member A (7) and clamps the inner clamping member, and a second nut (9) which matches with the outer thread clamping member A (7) and the outer thread clamping member B (8).

2. The device for butt jointing steel pipes in a pipe jacking well according to claim 1, characterized in that: A limiting piece (13) for limiting the position of the second external thread clamp (4) and the first nut (6) is provided on one end of the first external thread clamp (3).

3. The device for butt jointing steel pipes in a pipe jacking well according to claim 2, characterized in that: The external thread clamp A (7) and the external thread clamp B (8) comprise clamp sections A (10) at both ends respectively matched with two butted steel bars, a clamp section B (11) connected to the clamp section A (10) for clamping the first external thread clamp (3) or the second external thread clamp (4), and a clamp section C (12) connected to the clamp sections B (11) at both ends for clamping the first nut (6) and the limit plate (13) on the two inner clamping members (1); The second nut (9) cooperates with the clamping section A (10).

4. The device for butt jointing steel pipes in a pipe jacking well according to claim 3, characterized in that: Also includes an inner ring (14); The external thread clamp A (7) is arranged on the inner ring (14); or Along the circumference direction of the first nut (6), a plurality of positioning rods (15) are arranged on any one of the first nuts (6) or both of the first nuts (6); The clamping section C (12) is provided with a through hole (16) which matches with the positioning rod (15).

5. The device for butt jointing steel pipes in a pipe jacking well according to claim 4, characterized in that: The inner ring (14) is provided with connection blocks (17) at equal intervals, and the connection blocks (17) are connected to the external thread clamp A (7).

6. The device for butt jointing steel pipes in a pipe jacking well according to claim 2, characterized in that: The first nut (6) and the limiting plate (13) are cylindrical structures.

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