Hydraulic type anti-drag jacking and pulling equipment

Abstract

The utility model discloses hydraulic type anti-drag jacking and pulling equipment which comprises a hydraulic jack and further comprises a self-locking socket solid-wall pipe, the self-locking socket solid-wall pipe is installed at the power output end of the hydraulic jack, and a conical anti-drag machine head is installed at the end, away from the hydraulic jack, of the self-locking socket solid-wall pipe. A conical anti-drag machine head, a rigid dowel bar, an anchoring base plate, an anchoring locking rod, a self-locking socket solid wall pipe and a hydraulic jack are installed on a rotating pin shaft on the rear portion of a reverse reamer bit to form hydraulic type anti-drag jacking and pulling equipment, the reverse reamer bit is started to conduct tunneling, the conical anti-drag machine head adopts a conical shell so that soft soil can be squeezed towards the two sides, and then the reverse reamer bit is started to conduct tunneling. The forward resistance for jacking and pulling the drill pipe is reduced, the locking force towards the conical resistance reducing machine head is generated to the anchoring base plate through the hydraulic jack, the extrusion force on the self-locking socket solid wall pipe is formed, the forward direction of the pipeline is fixed through the rigid dowel bar, and the locking stability and the construction precision are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground pipeline construction, in particular to hydraulic drag-reducing jacking equipment. Background Art

[0002] Underground pipelines are pipes laid underground for transporting liquids, gases or loose solids. They and their ancillary facilities together constitute urban underground pipelines and are an important part of urban infrastructure. With the advancement of urbanization and the increase in daily sewage flow, the original municipal sewage pipeline network can no longer meet the discharge requirements. Moreover, with the development of the economy, the industry continues to increase, and a large amount of domestic sewage is directly discharged into rivers, lakes and reservoirs. Environmental pollution is becoming increasingly serious, and the construction of sewage pipeline networks is increasing. The construction plan and construction level of underground pipelines often mark a country's infrastructure capacity and modernization level. The traditional trenchless construction methods of underground pipelines mainly include two construction processes: jacking pipe and traction pipe.

[0003] The existing underground pipeline construction method has the following disadvantages during the construction process: the existing underground pipeline construction top-pull drill pipe has a large running resistance during the laying process, which leads to poor locking stability of the drill pipe and construction operation accuracy during the construction process. For this reason, we propose a hydraulic drag reduction top-pull equipment. Utility Model Content

[0004] The main purpose of the utility model is to provide a hydraulic drag-reducing jacking and pulling equipment, which can reduce the forward resistance of the jacking and pulling drill pipe through the cooperation of various components, improve the locking stability and construction accuracy, and effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The hydraulic drag reduction jacking and pulling equipment includes a hydraulic jack and a self-locking socket-and-spigot solid wall pipe. The power output end of the hydraulic jack is equipped with a self-locking socket-and-spigot solid wall pipe, and the end of the self-locking socket-and-spigot solid wall pipe away from the hydraulic jack is equipped with a conical drag reduction machine head. A rigid force transmission rod is installed horizontally inside the self-locking socket-and-spigot solid wall pipe, and the end of the rigid force transmission rod contacts the end of the conical drag reduction machine head.

[0007] Furthermore, it also includes a fixed seat and a sleeve, the outer wall of the rigid force transmission rod is welded with a fixed seat and the inside of the fixed seat is detachably connected with a sleeve, the end of the sleeve away from the fixed seat is threadedly connected with a screw and the end of the screw hits the inner wall of the self-locking socket solid wall tube; a fixed seat is welded on the outer wall of the rigid force transmission rod, when the outer wall of the self-locking socket solid wall tube is under great pressure, an internal support component can be installed before assembly, the outer screw groove at the end of the sleeve is aligned with the inner screw groove inside the fixed seat and screwed in to fix the position of the sleeve, and then the screw is turned to adjust its extended length until its end hits the inner wall of the self-locking socket solid wall tube, and through the cooperation of multiple groups of support components, during the operation of the self-locking socket solid wall tube, its internal support structure strength is improved and the construction stability is maintained.

[0008] Furthermore, an anchor plate is installed at the connection between the power end of the hydraulic jack and the end of the self-locking socket solid wall pipe, and an anchor locking rod is provided at one end of the hydraulic jack away from the anchor plate; the anchor plate plays a connecting role between the hydraulic jack and the self-locking socket solid wall pipe, and the anchor locking rod plays a locking role.

[0009] Furthermore, a reverse hole reaming drill bit is installed at one end of the conical drag reduction machine head away from the self-locking socket solid wall pipe; the reverse hole reaming drill bit plays a drilling role.

[0010] Furthermore, an inner screw groove is provided inside the fixing seat, and an outer screw groove matching the inner screw groove is provided at the outer peripheral end of the sleeve; the inner screw groove and the outer screw groove cooperate to facilitate the docking between the sleeve and the fixing seat.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the self-locking socket-and-spigot solid wall pipe adopts a flexible seal with a ring stiffness of not less than 12.5KN / m2. The pipe is light, has good corrosion resistance, good fluid flow performance, and can withstand the pressure inside the pipe and the static and dynamic loads outside the pipe. The pipe connection adopts a toothed hook buckle to squeeze and install the self-sealing lock, which is also convenient for installation in a small space. After the reverse hole expansion stage is completed, the self-locking socket-and-spigot solid wall pipe is installed in the last working well, the sediment hole cleaner is removed, and the conical drag reduction machine head, rigid force transmission rod, anchor pad, anchor locking rod, self-locking socket-and-spigot solid wall pipe, and hydraulic jack are installed to the rotating pin shaft at the rear of the reverse hole expansion drill bit to form a hydraulic drag reduction and top pulling equipment. The reverse hole expansion drill bit is started for excavation. The conical drag reduction machine head adopts a conical outer shell to squeeze the soft soil to both sides, and keep the annulus of the pipe at least 40mm when moving forward, thereby reducing the forward resistance of the top pulling drill pipe, and through the liquid The pressure jack generates a locking force toward the conical drag reduction machine head toward the anchor pad, forming an extrusion force on the self-locking socket solid wall pipe, and uses the rigid force transmission rod to fix the forward direction of the pipeline, further improving the locking stability and construction accuracy. If the self-locking socket solid wall pipe has completely entered the channel, start the hydraulic jack in reverse, remove the anchor locking rod and anchor pad, increase the rigid force transmission rod and self-locking socket solid wall pipe, and connect the anchor locking rod, anchor pad and hydraulic jack, continue to start the reverse reaming drill bit to advance, and repeat the above advancement process. If the self-locking socket solid wall pipe between the two working wells is full, separate the anchor locking rod, anchor pad, conical drag reduction machine head, rigid force transmission rod from the self-locking socket solid wall pipe, remove the top pull drill pipe, and splice and install it in the top pull drilling process of the next section, so that the self-locking socket solid wall pipe can be fully inserted into the hole drilled by the reverse reaming drill bit in a smaller space, reducing the construction operation area. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the hydraulic drag-reducing jacking and pulling equipment of the utility model.

[0013] Figure 2 The utility model is a schematic diagram of the casing installation structure of the hydraulic drag reduction jacking equipment.

[0014] In the figure: 1. hydraulic jack; 2. anchor locking rod; 3. self-locking socket solid wall pipe; 4. anchor pad; 5. conical drag reduction head; 6. rigid force transmission rod; 7. reverse hole expansion drill bit; 8. fixing seat; 801, inner thread groove; 9. casing; 901, outer thread groove; 10. screw. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0016] like Figure 1-2 As shown, the hydraulic drag reduction jacking equipment includes a hydraulic jack 1 and a self-locking socket-and-spigot solid wall pipe 3. The self-locking socket-and-spigot solid wall pipe 3 is installed at the power output end of the hydraulic jack 1, and a conical drag reduction machine head 5 is installed at the end of the self-locking socket-and-spigot solid wall pipe 3 away from the hydraulic jack 1. A rigid force transmission rod 6 is installed horizontally inside the self-locking socket-and-spigot solid wall pipe 3, and the end of the rigid force transmission rod 6 contacts the end of the conical drag reduction machine head 5.

[0017] Among them, it also includes a fixed seat 8 and a sleeve 9. The outer wall of the rigid force transmission rod 6 is welded with a fixed seat 8 and the inside of the fixed seat 8 is detachably connected with a sleeve 9. The sleeve 9 is threadedly connected with a screw 10 at one end away from the fixed seat 8, and the end of the screw 10 contacts the inner wall of the self-locking socket-and-spigot solid wall pipe 3; the fixed seat 8 is welded on the outer wall of the rigid force transmission rod 6. When the outer wall of the self-locking socket-and-spigot solid wall pipe 3 is under great pressure, an internal support component can be installed before assembly, and the outer screw groove 901 at the end of the sleeve 9 is aligned with the inner screw groove 801 inside the fixed seat 8 and screwed in to fix the position of the sleeve 9, and then the screw 10 is turned to adjust its extended length until its end contacts the inner wall of the self-locking socket-and-spigot solid wall pipe 3. Through the cooperation of multiple groups of support components, the internal support structure strength of the self-locking socket-and-spigot solid wall pipe 3 is improved during its operation, and the construction stability is maintained.

[0018] Among them, an anchor plate 4 is installed at the connection between the power end of the hydraulic jack 1 and the end of the self-locking socket solid wall pipe 3, an anchor locking rod 2 is arranged at the end of the hydraulic jack 1 away from the anchor plate 4, and a reverse reaming drill bit 7 is installed at the end of the conical drag reduction head 5 away from the self-locking socket solid wall pipe 3; the anchor plate 4 plays a connecting role between the hydraulic jack 1 and the self-locking socket solid wall pipe 3, the anchor locking rod 2 plays a locking role, and the reverse reaming drill bit 7 plays a drilling role.

[0019] Among them, the fixing seat 8 has an inner screw groove 801, and the outer end of the sleeve 9 has an outer screw groove 901 matching the inner screw groove 801; the cooperation between the inner screw groove 801 and the outer screw groove 901 facilitates the docking between the sleeve 9 and the fixing seat 8.

[0020] It should be noted that the utility model is a hydraulic drag reduction jacking equipment. When working, the self-locking socket-and-spigot solid wall pipe 3 adopts a flexible seal with a ring stiffness of not less than 12.5KN / m2. The pipeline is light, has good corrosion resistance, good fluid flow performance, and can withstand the pressure inside the pipe and the static and dynamic loads outside the pipe. The pipeline connection adopts a toothed hook buckle to squeeze and install the self-sealing lock, which is also convenient for installation in a small space. After the reverse expansion stage is completed, the self-locking socket-and-spigot solid wall pipe 3 is installed in the last working well, and the sediment is removed. The hole cleaner installs the conical drag reduction head 5, the rigid force transmission rod 6, the anchor pad 4, the anchor locking rod 2, the self-locking socket solid wall pipe 3, and the hydraulic jack 1 to the rotating pin at the rear of the reverse hole reaming drill bit 7 to form a hydraulic drag reduction and top pulling equipment. The reverse hole reaming drill bit 7 is started to advance. The conical drag reduction head 5 adopts a conical shell to squeeze the soft soil to both sides. When advancing, the annulus of the pipeline is kept at least 40mm, thereby reducing the forward resistance of the top pulling drill pipe. The hydraulic jack 1 generates a pressure to the anchor pad 4. The locking force of the tapered drag reducing machine head 5 forms an extrusion force on the self-locking socket-and-spigot solid wall pipe 3, and the forward direction of the pipeline is fixed by the rigid force transmission rod 6, which further improves the locking stability and construction accuracy. If the self-locking socket-and-spigot solid wall pipe 3 has completely entered the hole, the hydraulic jack 1 is started in the reverse direction, the anchor locking rod 2 and the anchor pad 4 are removed, the rigid force transmission rod 6 and the self-locking socket-and-spigot solid wall pipe 3 are added, and the anchor locking rod 2, the anchor pad 4 and the hydraulic jack 1 are connected, and the reverse expansion drill bit 7 is started to excavate, and the process is repeated. In the above advancement process, if the self-locking socket-and-spigot solid wall pipe 3 between the two working wells is fully laid, the anchor locking rod 2, the anchor pad 4, the conical drag reduction head 5, and the rigid force transmission rod 6 are separated from the self-locking socket-and-spigot solid wall pipe 3, the top-pull drill pipe is disassembled, and the next section of the top-pull drilling process is performed. Splicing and installation, so that the self-locking socket-and-spigot solid wall pipe 3 can be fully inserted into the hole drilled by the reverse expansion drill bit 7 in a smaller space, reducing the construction operation area and facilitating the docking between the casing 9 and the fixing seat 8.

[0021] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydraulic drag reduction jacking equipment, comprising a hydraulic jack (1), characterized in that: It also includes a self-locking socket-and-spigot solid wall pipe (3), the power output end of the hydraulic jack (1) is equipped with the self-locking socket-and-spigot solid wall pipe (3), and the end of the self-locking socket-and-spigot solid wall pipe (3) away from the hydraulic jack (1) is equipped with a conical drag reduction machine head (5), a rigid force transmission rod (6) is installed in the horizontal direction inside the self-locking socket-and-spigot solid wall pipe (3), and the end of the rigid force transmission rod (6) abuts against the end of the conical drag reduction machine head (5), and also includes a fixed seat (8) and a sleeve (9), the outer wall of the rigid force transmission rod (6) is welded with a fixed seat (8), and the inside of the fixed seat (8) is detachably connected with the sleeve (9), and the end of the sleeve (9) away from the fixed seat (8) is screwed with a screw (10), and the end of the screw (10) abuts against the inner wall of the self-locking socket-and-spigot solid wall pipe (3).

2. The hydraulic drag reduction jacking equipment according to claim 1, characterized in that: An anchoring pad (4) is installed at the connection between the power end of the hydraulic jack (1) and the end of the self-locking socket solid wall pipe (3), and an anchoring locking rod (2) is arranged at one end of the hydraulic jack (1) away from the anchoring pad (4).

3. The hydraulic drag reduction jacking equipment according to claim 1, characterized in that: A reverse hole expansion drill bit (7) is installed at one end of the conical drag reduction machine head (5) away from the self-locking socket solid wall pipe (3).

4. The hydraulic drag reduction jacking equipment according to claim 2, characterized in that: An inner screw groove (801) is provided inside the fixing seat (8), and an outer screw groove (901) matching the inner screw groove (801) is provided at the outer peripheral end of the sleeve (9).

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