Fabricated inhaul cable fixing device applied to curve pipe jacking rollback construction

Abstract

The utility model provides an assembly type inhaul cable fixing device applied to curve pipe jacking rollback construction. The assembly type inhaul cable fixing device applied to curve pipe jacking rollback construction comprises a plurality of pipe joints, a plurality of inhaul cable fixing devices and a plurality of connecting pieces, wherein a plurality of inhaul cable fixing devices are arranged in the plurality of pipe joints; the inhaul cable fixing device comprises a flange plate and a plurality of fixing supports, a sleeve hole and a plurality of inhaul cable holes are formed in the flange plate, a rotating shaft is installed in the sleeve hole, each fixing support comprises an arc long plate, a plurality of connecting pipes are fixedly installed on the top of each arc long plate, a radial supporting frame is fixedly installed on each arc long plate, and the radial supporting frames are fixedly installed on the connecting pipes. The radial supporting frame comprises two stand columns, and shaft holes are formed in the top ends of the two stand columns. The assembly type inhaul cable fixing device applied to curve pipe jacking rollback construction has the advantages that the side face and the inclination angle can be machined, and parts of round or square instruments and meters can be effectively positioned and clamped.

Description

TECHNICAL FIELD

[0001] The utility model belongs to underground engineering pipe jacking technical field especially relates to a kind of assembly type inhaul cable fixing device applied to curve pipe jacking back construction. BACKGROUND

[0002] Pipe jacking construction is to top into underground soil layer by the jacking force of main jack, with the top pipe jacking machine excavates front soil body, and the pipe jacking machine keeps advancing, and then pipe section is successively top into its back until by starting well penetrates to receiving well, to complete the entire jacking construction method.For the reasons of complex underground environment, more uncertain factors, limited geophysical prospecting technology capability and the like, pipe jacking construction will inevitably encounter various underground obstacles.If underground obstacle is encountered in pipe jacking construction process, pipe back scheme can be adopted at this time.Pipe jacking back system mainly includes counter pushing device (counter jacking jack), force transmission device (counterforce frame), force transmission inhaul cable (finishing rolled thread steel) and grouting backfill system.

[0003] However, if pipe jacking back construction is straight section, inhaul cable position is basically coincident with pipeline center line, and pipe section back movement can be realized by gradually pulling back inhaul cable based on jacking force of jack.But when pipe jacking back construction is curve section (horizontal curve and vertical curve superposition), after connecting the ends of back pipe inhaul cable to inside of pipe jacking machine and end part of jack diffusion plate, position of inhaul cable cannot be coincident with center line of curve section pipeline (inhaul cable even scratches with pipe section side wall) when tensioning, resulting in that pipe section stress direction is inconsistent with hole diameter trend during back tensioning, pipe section cannot be effectively back, and even causes excessive extrusion deformation of surrounding soil body, pipe section is extruded and damaged, and back construction failure engineering accident.

[0004] Therefore, it is necessary to provide a new assembly type inhaul cable fixing device applied to curve pipe jacking back construction to solve the technical problems that tensioning direction of inhaul cable is inconsistent with center line of curve pipeline, and pipe section stress direction points to surrounding soil body during pipe section back construction process of curve pipeline section. INVENTION CONTENTS

[0005] The utility model solves the technical problem to provide a kind of assembly type inhaul cable fixing device applied to curve pipe jacking back construction, which can adjust and constrain the trend of inhaul cable, make the trend of inhaul cable basically coincident with the center line of curve pipeline, and provide basic guarantee for curve pipeline back construction.

[0006] To solve the above technical problem, the assembly type inhaul cable fixing device applied to curve pipe jacking back construction provided by the utility model comprises: a plurality of pipe sections, a plurality of inhaul cable fixing devices are arranged in the plurality of pipe sections;

[0007] The cable fixing device comprises a flange plate and a plurality of fixing supports, the flange plate is provided with a sleeve hole and a plurality of cable holes, a rotating shaft is arranged in the sleeve hole, the fixing support comprises a circular arc long plate, a plurality of connecting pipes are fixedly arranged on the top of the circular arc long plate, a radial support frame is fixedly arranged on the circular arc long plate, the radial support frame comprises two vertical columns, shaft holes are formed in the top of the two vertical columns, the rotating shaft penetrates through the shaft holes and is matched with the shaft holes, and a fixing steel bar is arranged between every two adjacent circular arc long plates and penetrates through the connecting pipes and is matched with the connecting pipes.

[0008] As a further scheme of the utility model, the outer arc radius of the circular arc long plate is equal to the inner radius of the pipe section.

[0009] As a further scheme of the utility model, the rotating shaft is provided with anti-off holes at both ends, and fixing bolts are arranged in the anti-off holes.

[0010] As a further scheme of the utility model, the pipe section is provided with a plurality of cables, and the plurality of cables penetrate through the cable holes of the plurality of flange plates in sequence.

[0011] As a further scheme of the utility model, the plurality of cable fixing devices are arranged in the pipeline direction of the plurality of pipe sections in sequence, and the direction of the plurality of cables is consistent with the pipeline direction of the pipe sections.

[0012] As a further scheme of the utility model, the length of the circular arc long plate is higher than the length of the pipe section, the plurality of connecting pipes are symmetrically distributed on the circular arc long plate, and the center lines of the connecting pipes are on the same straight line.

[0013] Compared with the related art, the assembly type cable fixing device applied to the curved pipe back-off construction has the following beneficial effects:

[0014] 1. The utility model provides basic guarantee for the curved pipeline back-off construction by basically coinciding the direction of the cable with the center line of the pipeline of the pipe section.

[0015] 2. The cable fixing device in the utility model is assembled by a plurality of fixing supports, each component has simple structure, convenient processing and manufacturing, light weight and low cost.

[0016] 3. The position of the cable fixing device needs to be adjusted at any time during the pipe section back-off construction process, the cable fixing device only needs to be disassembled and separated from the rotating shaft and the fixing steel bar when the position is adjusted, and then reassembled at the new installation position, which is convenient for the pipeline inside the pipe section to be carried, disassembled and installed, and provides convenience for engineering construction. BRIEF DESCRIPTION OF DRAWINGS

[0017] For the convenience of those skilled in the art to understand, the utility model will be further described below with reference to the drawings.

[0018] Figure 1 It is three-dimensional schematic view of fixed support in the utility model;

[0019] Figure 2 It is three-dimensional schematic view of flange plate in the utility model;

[0020] Figure 3 It is installation schematic view of one fixed support and flange plate in the utility model;

[0021] Figure 4 It is installation schematic view of two fixed supports and flange plate in the utility model;

[0022] Figure 5 It is installation schematic view of three fixed supports and flange plate in the utility model;

[0023] Figure 6 It is three-dimensional schematic view of installation and pipe section inside of cable fixing device in the utility model;

[0024] Figure 7 It is sectional view of installation and pipe section inside of cable fixing device in the utility model;

[0025] Figure 8 It is longitudinal section view of cable fixing device applied to curve pipeline back-off construction in the utility model;

[0026] Figure 9 It is transverse section view of cable fixing device applied to curve pipeline back-off construction in the utility model.

[0027] In the drawing: 1, circular arc long plate; 2, radial support frame; 3, shaft hole; 4, connecting pipe; 5, flange plate; 6, sleeve hole; 7, cable hole; 8, rotating shaft; 9, anti-drop hole; 10, fixed steel bar; 11, fixed bolt; 12, pipe section; 13, cable; 14, cable fixing device; 15, pipe jacking machine; 16, working well; 17, counterforce frame; 18, jack. DETAILED DESCRIPTION

[0028] Please refer to Figures 1 to 9 Among them, Figure 1 It is three-dimensional schematic view of fixed support in the utility model; Figure 2 It is three-dimensional schematic view of flange plate in the utility model; Figure 3 It is installation schematic view of one fixed support and flange plate in the utility model; Figure 4 It is installation schematic view of two fixed supports and flange plate in the utility model; Figure 5 It is installation schematic view of three fixed supports and flange plate in the utility model; Figure 6The utility model discloses a three -dimensional schematic view of inside pipe section and installation of cable fixing device, Figure 7 The utility model discloses a section view of inside pipe section and installation of cable fixing device, Figure 8 The utility model discloses a longitudinal section view of cable fixing device applied to curve pipeline back construction, Figure 9 The utility model discloses a longitudinal section view of cable fixing device applied to curve pipeline back construction,

[0029] The cable fixing device 14 includes a flange plate 5 and a plurality of fixing supports, the flange plate 5 is provided with a sleeve hole 6 and a plurality of cable holes 7, a rotating shaft 8 is installed in the sleeve hole 6, the fixing support includes a circular arc long plate 1, a plurality of connecting pipes 4 are fixedly installed on the top of the circular arc long plate 1, a radial support frame 2 is fixedly installed on the circular arc long plate 1, the radial support frame 2 includes two stand columns, shaft holes 3 are formed in the top of the two stand columns, the rotating shaft 8 penetrates the shaft holes 3 and is matched with the shaft holes 3, a fixing steel bar 10 is arranged between the adjacent two circular arc long plates 1, and the fixing steel bar 10 penetrates the connecting pipes 4 and is matched with the connecting pipes 4.

[0030] As shown in Figure 6 and Figure 7 , the outer arc radius of the circular arc long plate 1 is equal to the inner radius of the pipe section 12.

[0031] Through the above setting, the circular arc long plate 1 can be attached to the pipe wall of the pipe section 12, and the stability of the cable fixing device 14 is improved.

[0032] As shown in Figure 3 and Figure 5 , the two ends of the rotating shaft 8 are provided with anti-dropping holes 9, and fixing bolts 11 are installed in the two anti-dropping holes 9.

[0033] By setting the anti-dropping holes 9 and the fixing bolts 11, after the cable fixing device 14 is assembled, the rotating shaft 8 cannot be separated and fallen off from the fixing support based on the fixing bolts 11.

[0034] As shown in Figures 7 to 9 , the pipe section 12 is provided with a plurality of cables 13, and the plurality of cables 13 penetrate the cable holes 7 on the plurality of flange plates 5 in sequence.

[0035] As shown in Figure 8 and Figure 9 , the plurality of cable fixing devices 14 are sequentially arranged in the pipeline direction of the plurality of pipe sections 12, and the trend of the plurality of cables 13 is consistent with the pipeline direction of the pipe section 12.

[0036] The setting can limit the cable 13 by the cable fixing device 14, so that the cable 13 is basically coincided with the center line of the curved pipe line of the pipe section 12.

[0037] As shown in Figure 6 and Figure 7 The length of the circular arc long plate 1 is higher than that of the pipe section 12, the plurality of connecting pipes 4 are symmetrically distributed on the circular arc long plate 1, and the center lines of the connecting pipes 4 are on the same straight line.

[0038] By making the length of the circular arc long plate 1 not less than the length of the pipe section 12, the overall stability of the fixing support is ensured, and the center lines of the plurality of connecting pipes 4 provided at both ends of the circular arc long plate 1 are on the same straight line, so that the fixing steel bars 10 can be inserted into the plurality of connecting pipes 4 in the same row.

[0039] The working principle of the assembly type cable fixing device for curved pipe back-off construction provided by the utility model is as follows:

[0040] The first step: when the curved pipe section 12 in place is determined to be back-off, the number and position of the assembly type cable fixing device 14 are designed and arranged according to the curvature of the pipe line, so that the cable 13 adjusted by the cable fixing device 14 is basically coincided with the center line of the curved pipe line.

[0041] The second step: the specific structure and component size of the assembly type cable fixing device 14 are designed and determined according to the diameter of the pipe section 12, and the components with corresponding size and number are manufactured and processed for subsequent installation and use.

[0042] The third step: according to the design scheme, the cable 13 is inserted into the cable hole 7 of the flange plate 5 equal to the number of the assembly type cable fixing device 14 during installation, and the cable 13 should be uniformly and symmetrically distributed in the cable hole 7 of the flange plate 5.

[0043] The fourth step: according to the design scheme, the fixing support is assembled at the designed position, the cables 13 are independent of each other, the fixing support should be installed on the pressure side, that is, the cable 13 is tensioned during back-off construction, so that the cable fixing device 14 should be subjected to pressure instead of tension, and the cable 13 adjusted by the cable fixing device 14 is basically coincided with the center line of the curved pipe line.

[0044] The fifth step: the formal pipe back-off, the back-off rate is controlled, and the backfill material is pumped into the cavity in front of the pipe jacking machine 15 at the same time, and the jack 18 is started to cooperate with the counterforce frame 17 to perform the back-off work. When the first pipe section 12 is jacked into the working well 16, the back-off work is paused, and the pipe section 12 is lifted out of the working well 16. Continue back-off construction, when the second pipe section 12 is jacked into the working well 16, the back-off work is paused, and the pipe section 12 is lifted out of the working well 16, and the same is true for the subsequent steps.

[0045] It should be noted that the device structure and the drawings of the utility model mainly describe the principle of the utility model, and the setting of the power mechanism, the power supply system and the control system of the device is not completely described in the technical principle of the design, and under the premise that the technical personnel in the field understand the principle of the above-mentioned utility model, the specific of the power mechanism, the power supply system and the control system can be clearly known, and the control mode of the application file is automatically controlled through the controller, and the control circuit of the controller can be realized by simple programming of the technical personnel in the field;

[0046] The standard parts used can be purchased from the market, and can be ordered according to the description and drawings, the specific connection mode of each part adopts the conventional screw, rivet, welding and other conventional means in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the components known by the technical personnel in the field, the structure and principle thereof can be known by the technical personnel through the technical manual or through the conventional experimental method.

[0047] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations or direct or indirect application can be made to these embodiments without departing from the principle and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents, and the same reason includes in the patent protection scope of the utility model.

Claims

1. An assembled cable fixing device applied to curved pipe back-pulling construction, characterized in that, include: The plurality of pipe sections, wherein a plurality of cable fixing devices are provided within the plurality of pipe sections; The cable fixing device includes a flange and multiple fixing brackets. The flange has a sleeve hole and multiple cable holes. A rotating shaft is installed in the sleeve hole. The fixing bracket includes an arc-shaped long plate. Multiple connecting pipes are fixedly installed on the top of the arc-shaped long plate. A radial support frame is fixedly installed on the arc-shaped long plate. The radial support frame includes two columns. The top of each of the two columns has a shaft hole. The rotating shaft passes through the shaft hole and is adapted to the shaft hole. A fixing steel bar is provided between two adjacent arc-shaped long plates. The fixing steel bar passes through the connecting pipe and is adapted to the connecting pipe.

2. The assembled in-line cable fixing device for curved pipe back-pulling construction according to claim 1, characterized in that: The outer radius of the arc plate is equal to the inner radius of the pipe section.

3. The assembled in-line cable fixing device for curved pipe back-pulling construction according to claim 1, characterized in that: Both ends of the rotating shaft are provided with anti-detachment holes, and fixing bolts are installed in both anti-detachment holes.

4. The assembled in-line cable fixing device for curved pipe back-pulling construction according to claim 1, characterized in that: The pipe section is equipped with multiple cables, which sequentially pass through cable holes on multiple flanges.

5. The assembled in-line cable fixing device for curved pipe back-pulling construction according to claim 1, characterized in that: Multiple cable fixing devices are sequentially arranged along the pipeline direction of multiple pipe sections, and the direction of the multiple cables is consistent with the pipeline direction of the pipe sections.

6. The assembled in-line cable fixing device for curved pipe back-pulling construction according to claim 1, characterized in that: The length of the arc-shaped plate is greater than the length of the pipe section, and multiple connecting pipes are symmetrically distributed on the arc-shaped plate, with the center lines of the connecting pipes on the same straight line.

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