Pipe jacking equipment

Abstract

The present invention relates to a pipe jacking construction equipment, comprising an embedded steel plate arranged in a working well, wherein an installation position for fixing a jack cylinder body is arranged on the embedded steel plate, and at least two push plates for pushing unit pipe sections are arranged on the embedded steel plate, and the plate surfaces of the push plates are arranged vertically and symmetrically arranged on the embedded steel plate, the oil cylinder of the jack is started and the push plates are linked to move horizontally, and the linked push plates abut against one end of the unit pipe section and move toward the hole opening of the working well. During the actual construction process, the pipe jacking construction equipment digs a working well at the middle section of a path to be constructed, and the embedded steel plate of the pipe jacking construction equipment is hoisted to the lower end position of the working well, and then installed and fixed, and the jack cylinder body is fixed on the installation position of the embedded steel plate, and the push plates for pushing the unit pipe sections are symmetrically arranged on the embedded steel plate, and starting the jack can realize pipe jacking operation on the bidirectional wellbore of the working well, significantly improving the turnover utilization rate of the machine head, and further significantly improving the construction efficiency of the pipe jacking.

Description

Technical Field

[0001] The present invention relates to the field of engineering technology, in particular to pipe jacking construction equipment. Background Art

[0002] Pipe jacking machines are often seen in conventional slurry balance (earth pressure balance) construction. In the above-mentioned slurry balance construction process, the pipe jacking machine can only push the unit pipe segment in one direction at a time. This is because the jack cylinder used to push the unit pipe segment toward the hole requires a rear backrest support. The backrest is set in the opposite direction of the jacking. The above-mentioned backrest is mostly concrete-molded backrest. Before the unit pipe segment is pushed into the hole for construction, a backrest needs to be made of concrete at the bottom of the working well. It takes 2 to 3 days to ensure that the backrest is completely solidified, and then the jack is installed. Therefore, when implementing the unit pipe segment jacking operation, it causes low efficiency. When implementing the pipe jacking operation on the pipe segment at the other end of the hole, it is necessary to reinstall the track and re-adjust the machine head, which takes a long time and reduces the turnover utilization rate of the machine head. Summary of the Invention

[0003] The purpose of the present invention is to provide a pipe jacking construction device, which can significantly improve the efficiency of pipe jacking construction and can simultaneously realize multi-directional pipe jacking operations on a working well.

[0004] The present invention solves the technical problem by adopting the following technical solutions:

[0005] A pipe jacking construction equipment includes an embedded steel plate arranged in a working well, wherein the embedded steel plate is provided with a mounting position for fixing a jack cylinder body, and at least two push plates for pushing unit pipe sections are provided on the embedded steel plate. The plate surfaces of the push plates are arranged vertically and symmetrically arranged on the embedded steel plate. The oil cylinder of the jack is started and linked to the push plate to move horizontally, and the push plate abuts against one end of the unit pipe section and moves toward the opening of the working well.

[0006] The present invention also has the following technical features:

[0007] The cylinder of the jack is arranged vertically, and the jack is connected to the push plate through a linkage mechanism. The jack moves vertically and links the push plate to move horizontally.

[0008] The embedded steel plate is provided with support rods at intervals in the circumferential direction, and the rod ends of the support rods are in contact with the inner wall of the working well.

[0009] One end of the support rod is hinged to the embedded steel plate, the hinge axis is arranged horizontally, the support rod is connected to the support mechanism, and the support mechanism is used to adjust the angle between the support rod and the embedded steel plate.

[0010] The supporting mechanism includes a supporting roller, the wheel core of the supporting roller is horizontal and perpendicular to the length direction of the support rod, the rim of the supporting roller is in abutment against the rod body of the support rod, the wheel frame of the supporting roller is fixed on the adjusting plate, an adjusting screw is vertically arranged on the adjusting plate, the upper end of the adjusting screw extends out of the upper plate surface of the embedded steel plate, and an adjusting nut is provided at the upper end of the adjusting screw.

[0011] The support rod is a telescopic rod structure, and the front end of the support rod is hingedly provided with an arc-shaped top plate. The outer edge of the arc-shaped top plate abuts against the inner wall of the working well, and the hinge axis of the arc-shaped top plate is horizontal and arranged perpendicular to the support rod.

[0012] The lower end of the push plate forms a horizontal sliding fit with the track, and the track is horizontally and parallelly arranged in two rows.

[0013] The front end of the track is provided with a material receiving slide for receiving the unit pipe section. The material receiving slide is composed of multiple material receiving slide rods horizontally spaced apart. The multiple material receiving slide rods are arranged parallel to the track. The multiple material receiving slide rods form an arc-shaped plate structure. The position of the material receiving slide and the track in the length direction is adjustable.

[0014] Both ends of the multiple material receiving slide rods are provided with mounting support rods, and the mounting support rods extend vertically downward and form an integral body. The outer edge of the push plate is an arc-shaped plate structure as a whole, and the edge of the push plate is provided with an avoidance notch, and the avoidance notch is arranged along the length direction of the push plate, and the avoidance notch is used to form avoidance with the material receiving slide rod.

[0015] A column is vertically arranged on the embedded steel plate, and a fixed flange for fixing the jack is arranged on the column. The piston rod of the jack is vertically downward and hinged to one end of the push rod, and the other end of the push rod is hinged to the push plate. The hinge axes at both ends of the push rod are horizontal and perpendicular to the moving direction of the push plate. A bottom plate is prefabricated at the bottom of the working well, and reserved bolts are vertically arranged on the bottom plate. The upper ends of the reserved bolts extend out of the upper plate surface of the fixed flange and are provided with nuts.

[0016] Compared with the existing technology, the beneficial effects of the present invention are reflected in: during the actual construction process of the jacking construction equipment, a working well is dug at the middle position of the path to be constructed, the embedded steel plate of the jacking construction equipment is hoisted to the lower end position of the working well, and then installed and fixed, and the jack cylinder is fixed to the installation position of the embedded steel plate, and the push plates for pushing the unit pipe sections are symmetrically arranged on the embedded steel plate. Starting the jack can realize the jacking operation of the two-way wellbore of the working well, significantly improving the turnover utilization rate of the machine head, and thus significantly improving the construction efficiency of the jacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 and Figure 2It is a schematic diagram of the structure of the pipe jacking construction equipment located in the working pit from two perspectives;

[0018] Figure 3 This is a schematic diagram of the structure of the pipe jacking construction equipment after it is located in the working pit and moved out of the bottom plate;

[0019] Figure 4 This is the main view of the pipe jacking construction equipment in the working pit;

[0020] Figure 5 It is a structural diagram of pipe jacking construction equipment;

[0021] Figure 6 This is the main view of the pipe jacking construction equipment;

[0022] Figure 7 and Figure 8 It is a schematic diagram of the structure of part of the pipe jacking construction equipment from two perspectives;

[0023] Figure 9 It is a structural diagram of the push plate. DETAILED DESCRIPTION

[0024] Reference Figures 1 to 9 The structural features of this pipe jacking construction equipment are described in detail as follows:

[0025] A pipe jacking construction device includes an embedded steel plate 20 disposed in a working well 10. The embedded steel plate 20 is provided with a mounting position for fixing the cylinder body of a jack 30. The embedded steel plate 20 is provided with at least two push plates 40 for pushing unit pipe sections. The push plates 40 are arranged vertically and symmetrically on the embedded steel plate 20. The oil cylinder of the jack 30 is activated and linked to the push plates 40 for horizontal movement. The push plates 40 abut against one end of the unit pipe section and move toward the opening of the working well 10.

[0026] Combine Figures 1 to 5 As shown, before the pipe jacking equipment is hoisted into the working well 10, the working well 10 needs to be dug first. The working well 10 is dug in the middle section of the pipe jacking construction path. Mounting bolts are reserved in the working well 10 for installing embedded steel plates 20. The embedded steel plates 20 are hoisted into the working ribs 10 by a truss crane and fixed with embedded bolts. Then, the cylinder of the jack 30 is installed on the mounting position of the embedded steel plate 20, the jack 30 is started, and the push plates 40 are linked to push toward their respective openings, thereby realizing two-way simultaneous pipe jacking operation on the working well 10. When the machine head on one side of the wellbore of the working well fails, the other side of the working well can still move normally, so as to reduce the serious problem of the entire project being shut down due to machine head failure during one-way jacking.

[0027] As a preferred embodiment of the present invention, in order to reduce the horizontal space occupied by the jack 30 in the working pit 10, so that the working pit 10 leaves sufficient horizontal space for arranging other equipment, the cylinder of the jack 30 is arranged vertically, and the jack 30 is connected to the push plate 40 through a linkage mechanism. The jack 30 moves vertically and links the push plate 40 to move horizontally.

[0028] The above-mentioned jack 30 moves vertically, converting the vertical movement into horizontal movement of the push plate 40, thereby realizing the jacking operation on one end of the unit pipe section, gradually jacking the jacking pipe, and completing the construction operation. The above-mentioned jack 30 is arranged vertically, so that the jack 30 occupies a smaller horizontal space in the working shaft 10, thereby reserving enough space for the installation of other equipment.

[0029] In order to achieve stable and reliable installation of the embedded steel plate 20, support rods 50 are provided at intervals in the circumferential direction of the embedded steel plate 20, and the rod ends of the support rods 50 abut against the inner wall of the working well 10;

[0030] First, the embedded steel plate 20 is hoisted into the working pit 10 using a truss crane and installed smoothly. The ends of the support rods 50 are placed against the inner wall of the working pit 10 and installed, thereby effectively fixing the embedded steel plate 20 and preventing the embedded steel plate 20 from being lifted up due to the reverse action of the jack 30 when it is working.

[0031] In order to achieve effective abutment between the support rod 50 and the inner wall of the working pit 10 and ensure stable installation of the entire equipment, one end of the support rod 50 is hinged to the embedded steel plate 20, and the hinge axis is arranged horizontally. The support rod 50 is connected to a support mechanism, and the support mechanism is used to adjust the angle between the support rod 50 and the embedded steel plate 20;

[0032] When the truss crane equipment lifts the embedded steel plate 20, the support rod 50 extends obliquely downward, and the embedded steel plate 20 sinks horizontally to the bottom of the working well 10, and then the rod end of the support rod 50 abuts against the inner wall of the working well 10. The supporting mechanism is adjusted to reduce the angle between the support rod 50 and the embedded steel plate 20, so that the angle becomes smaller, and then the rod end of the support rod 50 can be stably abutted against the inner wall of the working well 10 to ensure the tightening installation operation of the entire equipment.

[0033] In order to adjust the angle between the support rod 50 and the embedded steel plate 20, the support mechanism includes a support roller 51. The wheel core of the support roller 51 is horizontal and perpendicular to the length direction of the support rod 50. The rim of the support roller 51 abuts against the rod body of the support rod 50. The wheel frame of the support roller 51 is fixed to an adjustment plate 52. An adjustment screw rod 53 is vertically arranged on the adjustment plate 52. The upper end of the adjustment screw rod 53 extends out of the upper plate surface of the embedded steel plate 20. An adjustment nut 54 is provided at the upper end of the adjustment screw rod 53.

[0034] During the actual adjustment operation, after the embedded steel plate 20 is hung at the bottom of the working well 10, a large wrench tool is used to tighten the adjusting nut 54 to lift the adjusting plate 52 upward, thereby causing the supporting roller 51 to move toward the rod end of the support rod 51, thereby reducing the angle between the support rod 51 and the embedded steel plate 20, thereby effectively fixing the embedded steel plate 20 in the working well 10 to achieve effective fixation of the equipment.

[0035] More specifically, the support rod 50 is a telescopic rod structure, and a curved top plate 55 is hingedly provided at the front end of the support rod 50. The outer edge of the curved top plate 55 abuts against the inner wall of the working well 10, and the hinge axis of the curved top plate 55 is horizontal and arranged perpendicular to the support rod 50.

[0036] The above-mentioned support rod 50 is a sleeve rod structure, which makes it easy to adjust the length of the support rod 50. After adjusting the appropriate length, the entire embedded steel plate 20 and the support rod 50 are hung in the working well 10 to fix the embedded steel plate 20, and then the adjusting nut 54 is rotated so that the edge of the arc-shaped top plate 55 abuts against the inner wall of the working well 10 to achieve stable fixation of the entire equipment, and the position of the push plate 40 is adjusted so that the moving direction of the push plate 40 is exactly at the mouth of the wellbore.

[0037] In order to achieve the horizontal progressive pushing of the unit pipe section, the lower end of the push plate 40 forms a horizontal sliding fit with the track 60, and the track 60 is horizontally and parallelly arranged in two rows.

[0038] More preferably, the front end of the track 60 is provided with a material receiving slide 61 for receiving the unit pipe section, and the material receiving slide 61 is composed of a plurality of material receiving slide rods 611 spaced horizontally. The plurality of material receiving slide rods 611 are arranged parallel to the track 60, and the plurality of material receiving slide rods 611 form an arc-shaped plate structure. The position of the material receiving slide 61 and the track 60 in the length direction is adjustable.

[0039] The above-mentioned material receiving slide 61 can effectively scoop up a single unit pipe section, so that the unit pipe section is in a horizontal state with the tube core against the rod body of the material receiving slide 611, and the above-mentioned jack 30 is started to make the push plate 40 move horizontally and parallel to the moving direction of the material receiving slide 611, so that the unit pipe section can be effectively pushed horizontally into the wellbore to realize the gradual pushing operation of the unit pipe section.

[0040] More specifically, in order to effectively push the unit pipe section into the wellbore and separate the unit pipe section from the slide 61, the two ends of the multiple material receiving slide rods 611 are provided with mounting support rods 612, and the mounting support rods 612 extend vertically downward and form an integral body. The outer edge of the push plate 40 is an arc-shaped plate structure as a whole, and the edge of the push plate 40 is provided with an avoidance notch 41. The avoidance notch 41 is arranged along the length direction of the push plate 40, and the avoidance notch 41 is used to form an avoidance with the material receiving slide rod 611;

[0041] After the jack 30 is started, the push plate 40 is linked to move horizontally. The push plate 40 moves horizontally and forms an avoidance gap 41 with the material receiving slide 611 when moving horizontally, so that the unit pipe section on the material receiving slide 611 can be effectively pushed in gradually from one end of the wellbore to complete the pipe jacking operation. By adjusting the position of the material receiving slide 61 and the track 60 to adapt the position of the material receiving slide 61 and the wellbore, it can be ensured that after the unit pipe section is pushed into the wellbore, it can be effectively separated from the material receiving slide 61.

[0042] Finally, in order to realize the horizontal drive of the push plate 40, a column 71 is vertically provided on the embedded steel plate 20, and a fixing flange 72 for fixing the jack 30 is provided at the upper end of the column 71. The piston rod of the jack 30 is vertically downward and hinged to one end of the push rod 73. The other end of the push rod 73 is hinged to the push plate 40. The hinge axes at both ends of the push rod 73 are horizontal and perpendicular to the moving direction of the push plate 40. A bottom plate 80 is prefabricated at the bottom of the working well 10, and a reserved bolt 81 is vertically provided on the bottom plate 80. The upper end of the reserved bolt 81 extends out of the upper plate surface of the fixing flange 72 and is provided with a nut.

[0043] The piston of the jack 30 is arranged vertically, and the cylinder of the jack 30 can be effectively fixed by fixing the flange 72. When the jack 30 moves vertically and drives the push rod 73, the push plate 40 is linked to slide along the track 60, thereby realizing the horizontal jacking operation of one end of the unit pipe section and completing the jacking construction;

[0044] In actual operation, the size of the jack 30 is appropriately selected based on the diameter of the working well 10 and the number of pipe sections to be pushed, the pipe section diameter, and the pushing length. In accordance with existing construction, the length of the jack 30 is mostly 1.5m, the diameter of the fixed flange 72 is mostly 2m, the diameter of the base plate 80 is 2-3m, the reserved bolts 81 are arranged in 16 to 24 groups at equal angles along the circumferential direction of the base plate 80, and the same number of through holes are provided on the fixed flange 72.

[0045] When installing the jack 30, use a lifting device to hang the jack 30 into the working well 10, and then pass all the through holes on the fixed flange 72 through the reserved bolts 81, so that the fixed flange 72 fits with the base plate 80, and then nuts are respectively set on the reserved bolts 81, so that the jack 30 can be effectively fixed and the reliability of the fixation to the bottom of the working well 10 can be ensured.

[0046] From the above force analysis of the jack 30 pushing the push rod 73, it can be concluded that the cylinder of the jack 30 bears the vertical upward reverse force. Therefore, the prefabricated base plate 80 and the reserved bolts 81 are fastened through multiple installation positions to achieve stable installation of the equipment.

[0047] The following describes the pipe jacking construction process, which uses the above-mentioned equipment and includes the following steps:

[0048] The first step is to determine the jacking route and dig a working well 10 in the middle of the jacking route;

[0049] The second step is to pour concrete foundation embedded bolts at the bottom of the working well 10, and also set embedded bolts on the inner wall of the working well;

[0050] The third step is to dig a foundation pit at the bottom of the working pit 10, pour concrete in the foundation pit, and after the concrete solidifies, place the bottom plate 80 in the foundation pit so that the bottom plate 80 is laid flat. Pour concrete again in the foundation pit to cover the bottom plate 80 with concrete, and arrange reserved bolts 81 at intervals in the circumferential direction of the bottom plate 80. Embedded bolts are also set on the inner wall of the working pit.

[0051] Step 4: Adjust the support mechanism so that the angle between the support rod 50 and the embedded steel plate 20 becomes smaller, and the rod end of the support rod 50 abuts against the hole wall of the working rib 10, and is fastened to the embedded bolts on the inner wall of the working well 10 through nuts;

[0052] Step 5: After the hydraulic station is debugged, the single unit pipe section is hoisted onto the material receiving carriage 61 so that the pipe opening of the unit pipe section corresponds to the orifice of the wellbore;

[0053] Step 6: Start the jack 30, so that the piston rod of the jack 30 extends, which drives the push plate 40 to move horizontally and push the unit pipe section into the wellbore, completing the jacking of the single unit pipe section;

[0054] Step 7. Repeat steps 5 and 6 until all the unit pipe sections are arranged in the wellbore.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0056] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pipe jacking construction equipment, characterized in that: The invention comprises an embedded steel plate (20) arranged in a working well (10), wherein the embedded steel plate (20) is provided with a mounting position for fixing a cylinder body of a jack (30), wherein the embedded steel plate (20) is provided with at least two push plates (40) for pushing unit pipe sections, wherein the plate surfaces of the push plates (40) are arranged vertically and symmetrically arranged on the embedded steel plate (20), and the oil cylinder of the jack (30) is started and linked to move the push plates (40) horizontally, and the push plates (40) abut against one end of the unit pipe section and move toward the opening of the working well (10); The cylinder of the jack (30) is arranged vertically, and the jack (30) is connected to the push plate (40) through a linkage mechanism, so that the jack (30) moves vertically and links the push plate (40) to move horizontally; The embedded steel plate (20) is provided with support rods (50) at intervals in the circumferential direction, and the rod ends of the support rods (50) are in contact with the inner wall of the working well (10); One end of the support rod (50) is hinged to the embedded steel plate (20), the hinge axis of the support rod (50) is arranged horizontally, the support rod (50) is connected to a support mechanism, and the support mechanism is used to adjust the angle between the support rod (50) and the embedded steel plate (20); The support mechanism comprises a support roller (51), the wheel core of the support roller (51) is horizontal and perpendicular to the length direction of the support rod (50), the wheel rim of the support roller (51) abuts against the rod body of the support rod (50), the wheel frame of the support roller (51) is fixed on the adjustment plate (52), an adjustment screw rod (53) is vertically arranged on the adjustment plate (52), the upper end of the adjustment screw rod (53) protrudes from the upper plate surface of the embedded steel plate (20), and the upper end of the adjustment screw rod (53) is provided with an adjustment nut (54); The support rod (50) is a telescopic rod structure, and a curved top plate (55) is hingedly provided at the front end of the support rod (50), the outer edge of the curved top plate (55) abuts against the inner wall of the working well (10), and the hinge axis of the curved top plate (55) is horizontal and arranged vertically with the support rod (50).

2. The pipe jacking construction equipment according to claim 1, characterized in that: The lower end of the push plate (40) forms a horizontal sliding fit with the track (60), and the track (60) is arranged in two rows horizontally and in parallel at intervals.

3. The pipe jacking construction equipment according to claim 2, characterized in that: The front end of the track (60) is provided with a material receiving slide (61) for receiving the unit pipe section. The material receiving slide (61) is composed of a plurality of material receiving slide rods (611) spaced horizontally. The plurality of material receiving slide rods (611) are arranged in parallel with the track (60). The plurality of material receiving slide rods (611) enclose an arc-shaped plate structure. The material receiving slide (61) and the track (60) are in adjustable position in the length direction.

4. The pipe jacking construction equipment according to claim 3, characterized in that: Both ends of the plurality of material receiving slide bars (611) are provided with mounting support bars (612), the mounting support bars (612) extending vertically downward and forming an integral body, the outer edge of the push plate (40) as a whole presents an arc-shaped plate-like structure, the edge of the push plate (40) is provided with an avoidance notch (41), the avoidance notch (41) is arranged through the length direction of the push plate (40), and the avoidance notch (41) is used to form an avoidance with the material receiving slide bar (611).

5. The pipe jacking construction equipment according to claim 4, characterized in that: A column (71) is vertically arranged on the embedded steel plate (20), and a fixing flange (72) for fixing the jack (30) is arranged on the column (71). The piston rod of the jack (30) is vertically downward and is hinged to one end of a push rod (73), and the other end of the push rod (73) is hinged to the push plate (40). The hinge axes at both ends of the push rod (73) are horizontal and perpendicular to the moving direction of the push plate (40). A bottom plate (80) is prefabricated at the bottom of the working well (10), and a reserved bolt (81) is vertically arranged on the bottom plate (80). The upper end of the reserved bolt (81) protrudes from the upper plate surface of the fixing flange (72) and is provided with a nut.

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