Conversion support for laying guide pipe in underground pre-buried sliding groove section of rail transit

Abstract

The utility model belongs to the technical field of track construction, and solves the problem that a duct piece needs to be punched in the construction of a dense guide pipe bracket. The conversion support for laying the guide pipe in the underground pre-buried sliding groove section of the rail transit comprises the guide pipe, a guide pipe fixing clamping piece, a connecting base, a support bottom support and a junction box. The two parallel guide pipes are bound to the upper end of the connecting base through guide pipe fixing clamping pieces, the two ends of the connecting frame are detachably connected with support bottom supports through connecting assemblies, and the support bottom supports are perpendicular to the guide pipes and fixed to the interval pre-buried sliding grooves through pre-buried bolts. The junction box is arranged at the upper end of the connecting seat. The device is designed according to the structure of the underground pre-buried sliding groove interval, the requirement for the distance between the guide pipe fixing clamping pieces is met, punching does not need to be conducted on the duct piece, construction is easy and convenient, disassembly and maintenance are easy, and a large amount of cost and construction period are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of track construction, and in particular relates to a conversion bracket used for laying conduits in underground pre-buried chute sections of rail transportation. Background Art

[0002] In the construction of conduit laying in underground shield tunnel sections of rail transit, holes are usually drilled on the pipe segments to fix the conduit brackets, and the conduits are fixed to the conduit brackets with pipe clamps. Fixed pipe clamps should be installed within 150mm to 500mm from the terminal, the midpoint of the elbow, or the edge of the cabinet, table, box, tray, etc. The maximum distance between the fixed pipe clamps in the middle straight section of the rigid steel conduit with a wall thickness of ≤2mm and a diameter of 20mm is 1000mm.

[0003] At present, the segment pre-embedded chute technology has been gradually adopted in the design of underground shield sections of rail transit in many cities in China. Since the design width of the segment is mostly 1200mm, the spacing of the pre-embedded chute is also 1200mm, and the design specifications of the conduit are mostly hot-dip galvanized steel pipes with a diameter of 20mm and a wall thickness of 2.0mm. If only a conduit bracket is installed on the pre-embedded chute, it cannot meet the requirements of the construction quality acceptance specifications for building electrical engineering.

[0004] To solve the above problems, the existing technical solutions are generally handled by increasing the density of conduit brackets. That is, in addition to fixing a conduit bracket on each embedded chute, holes are punched in the pipe segment in the middle of the two embedded chute and then one or two pairs of conduit brackets are fixed. This can meet the spacing requirements for conduit laying in the construction quality acceptance specifications for building electrical engineering.

[0005] However, the above scheme requires drilling holes in the segments, which firstly destroys the structure of the segments, secondly violates the original intention of the design of the pre-embedded chute in the shield section, and thirdly increases a lot of labor and material costs. At the same time, the duct brackets fixed by drilling holes on the segments are difficult to disassemble, which greatly increases the difficulty of subsequent operation and maintenance.

[0006] Therefore, how to ensure that the fixed pipe clamp spacing for conduit laying meets the requirements of the construction quality acceptance specifications for building electrical engineering without drilling holes in the pipe segments to increase the density of conduit brackets has become an urgent problem to be solved. Utility Model Content

[0007] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides a conversion bracket for laying conduits in underground pre-buried chute sections of rail transit.

[0008] The utility model is implemented by the following technical scheme: a conversion bracket for laying conduits in an underground pre-buried chute section of rail transit, comprising a conduit, a conduit fixing clamp, a connecting seat, a bracket bottom support and a junction box; two parallel conduits are bound to the upper end of the connecting seat via the conduit fixing clamp, both ends of the connecting seat are detachably connected to a bracket bottom support via a connecting assembly, the bracket bottom support is vertically arranged with the conduit and fixed to the pre-buried chute section via pre-buried bolts; the junction box is arranged at the upper end of the connecting seat.

[0009] Preferably, the catheter fixing fixture includes a cross arm and a pipe clamp, a plurality of cross arms are fixed at intervals on the upper portion of the connecting seat, and each cross arm is bolted with two pipe clamps for clamping the catheter.

[0010] Preferably, the connecting assembly includes an angle steel and a connecting plate, wherein the angle steel is fixedly connected to the end of the connecting seat, the horizontal section of the angle steel is fixedly connected to the connecting plate via connecting bolts, and the connecting plate is fixedly connected to the upper end of the bracket bottom support.

[0011] Preferably, the longitudinal section of the bracket bottom support is a C-shaped structure.

[0012] Preferably, the connecting seat is two flat steel structures arranged in parallel, and the cross arm is fixedly connected between the two flat steel structures.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] This device is designed according to the structure of the underground pre-buried chute section, meets the requirements of the spacing of the conduit fixing fixtures, and does not require drilling holes on the pipe segments. It is easy to construct, disassemble and maintain, and saves a lot of cost and construction time. On the basis of the conventional conduit bracket, a layer of conversion bracket is added. By adding conduit fixing points on the conversion bracket, the fixed spacing of the conduit is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a front view of the present embodiment;

[0017] Figure 2 is a top view of this embodiment;

[0018] Figure 3 It is a side view of this embodiment.

[0019] In the figure: 1-conduit; 2.1-cross arm; 2.2-pipe clamp; 3-connecting seat; 4-bracket bottom support; 5-junction box; 6-embedded bolt; 7.1-angle steel; 7.2-connecting plate. DETAILED DESCRIPTION

[0020] Combined with the drawings in the embodiments of the utility model, the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0022] The utility model provides an embodiment:

[0023] like Figures 1 to 3 As shown, a conversion bracket for laying conduits in an underground pre-buried chute section of rail transit comprises a conduit 1, a conduit fixing clamp, a connecting seat 3, a bracket bottom support 4 and a junction box 5; two parallel conduits 1 are bound to the upper end of the connecting seat 3 via the conduit fixing clamp, both ends of the connecting seat 3 are detachably connected to a bracket bottom support 4 via a connecting assembly, the bracket bottom support 4 is vertically arranged with the conduit 1 and fixed to the pre-buried chute section via embedded bolts 6; the junction box 5 is arranged at the upper end of the connecting seat 3.

[0024] In this embodiment, the conduit fixing fixture includes a cross arm 2.1 and a pipe clamp 2.2. A plurality of cross arms 2.1 are fixed to the upper portion of the connecting seat 3 at intervals of 300 mm, and each cross arm 2.1 is bolted with two pipe clamps 2.2 for clamping the conduit 1.

[0025] The connecting seat 3 is two parallel flat steel structures, and the cross arm 2.1 is fixedly connected between the two flat steel structures. The longitudinal section of the bracket bottom support 4 is a C-shaped structure, and the embedded bolts 6 are T-shaped bolts.

[0026] The connecting assembly includes an angle steel 7.1 and a connecting piece 7.2, wherein the angle steel 7.1 is welded and fixed to the end of the connecting seat 3, the horizontal section of the angle steel 7.1 is fixedly connected to the connecting piece 7.2 via connecting bolts, and the connecting piece 7.2 is welded and fixed to the upper end of the bracket bottom support 4.

[0027] Specific installation steps:

[0028] During installation, first fix the bracket bottom support 4 to the embedded slide groove of the interval with embedded bolts 6, then fix the connecting seat 3 to the bracket bottom support 4 through the connecting assembly, and use the pipe clamp 2.2 to fix the conduit 1 to the cross arm 2.1.

[0029] The support of the present invention can avoid drilling holes on the pipe segments of the section, ensure the integrity of the shield section pipe segment structure, and can greatly reduce the amount of support used.

[0030] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A conversion bracket for laying conduits in underground pre-buried chute sections of rail transit, characterized in that: It comprises a conduit (1), a conduit fixing fixture, a connecting seat (3), a bracket bottom support (4) and a junction box (5); Two parallel conduits (1) are bound to the upper end of a connection seat (3) via conduit fixing clamps; both ends of the connection seat (3) are detachably connected to a bracket bottom support (4) via a connection assembly; the bracket bottom support (4) is arranged perpendicular to the conduit (1) and is fixed to the interval pre-embedded slide groove via pre-embedded bolts (6); a junction box (5) is arranged at the upper end of the connection seat (3).

2. A conversion bracket for laying conduits in underground pre-buried chute sections of rail transit according to claim 1, characterized in that: The conduit fixing clamp comprises a cross arm (2.1) and a pipe clamp (2.2); a plurality of cross arms (2.1) are fixed at intervals on the upper portion of the connection seat (3); and each cross arm (2.1) is bolted with two pipe clamps (2.2) for clamping the conduit (1).

3. The conversion bracket for laying conduits in underground pre-buried chute sections of rail transit according to claim 1 is characterized in that: The connection assembly comprises an angle steel (7.1) and a connection plate (7.2), wherein the angle steel (7.1) is fixedly connected to the end of the connection seat (3), the horizontal section of the angle steel (7.1) is fixedly connected to the connection plate (7.2) via a connection bolt, and the connection plate (7.2) is fixedly connected to the upper end of the bracket bottom support (4).

4. The conversion bracket for laying conduits in underground pre-buried chute sections of rail transit according to claim 1 is characterized in that: The longitudinal section of the bracket bottom support (4) is a C-shaped structure.

5. The conversion bracket for laying conduits in underground pre-buried chute sections of rail transit according to claim 1 is characterized in that: The connecting seat (3) is two flat steel structures arranged in parallel, and the cross arm (2.1) is fixedly connected between the two flat steel structures.

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