Sandy soil layer pipe jacking working well support steel insertion pipe anchoring part and self-tightening connector

Abstract

The utility model discloses a sandy soil layer pipe jacking working well support steel insertion pipe anchoring part and self-tightening connector, which comprises an anchoring part and a self-tightening connector, the anchoring part comprises an anchor plate and reinforcing steel bars, the anchor plate is a square steel plate, two reinforcing steel bars are welded on two sides of the square steel plate, each reinforcing steel bar is of a U-shaped structure, and two ends of each reinforcing steel bar are connected with a steel grating main bar in a welding manner; a circular through hole is formed in the center of the square steel plate, and the steel insertion pipe directly penetrates through the through hole and is fixed; the self-tightening connector is composed of a split screw rod and a nut, the screw rod is of a structure with the hollow interior and the conical exterior, a circle of threads are arranged on the conical surface of the exterior of the screw rod, the screw rod is formed by combining two semi-arc screw rods, and the exterior of the screw rod is fastened through the nut; the steel insertion pipe is connected with a grouting rubber hose through the self-tightening connector. The steel inserting pipe anchoring part is machined in a factory and can be produced in batches, the construction progress is accelerated, and the safety and reliability of a supporting structure are guaranteed; the self-tightening connector is arranged during grouting of the steel inserting pipe, connection is safe and reliable, and the grouting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a supporting steel pipe anchor piece and a self-tightening joint for a pipe top working well in a sandy soil layer, belonging to the field of machinery. Background Art

[0002] The anchor rods of the pipe-jacking working well in sandy soil are generally designed as steel plugs, which have both sand fixation and anchoring functions after grouting, and more effectively ensure the safety of the working well support structure. However, the connection between the steel plug and the support structure and the connection with the grouting rubber tube during grouting are relatively backward. The existing steel plug design for supporting pipe-jacking working wells in sandy soil layers has only one steel pipe. There are no clear requirements for how to connect in the relevant design and specifications. The construction site generally adopts welding of steel bars and steel pipes, and finally fixes them with steel bars of steel grid by welding. The amount of welding on site is large, and the connection reliability is poor. Moreover, when grouting the steel plug, the rubber hose and the steel pipe are generally connected by tightening with iron wire, which is time-consuming and labor-intensive, and the connection reliability is poor. There is an urgent need for a steel plug device for supporting pipe-jacking working wells in sandy soil layers. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the utility model provides a sand layer jacking working well support steel pipe anchor and self-tightening joint, which has strong connection reliability and avoids the problems of large amount of on-site welding and time-consuming and labor-intensive problems.

[0004] The technical solution adopted by the utility model is: a steel plug-in anchor and a self-tightening joint for supporting a top pipe working well in a sand layer, comprising an anchor and a self-tightening joint, wherein the anchor comprises an anchor plate and a steel bar, wherein the anchor plate is a square steel plate, two steel bars are welded on both sides of the square steel plate, the steel bar is a U-shaped structure, and both ends of the steel bar are welded and connected with the main steel bar of the steel grid; a circular through hole is provided in the center of the square steel plate, and the steel plug-in directly passes through the through hole and is fixed;

[0005] The self-tightening joint is composed of a segmented screw and a nut. The screw is a structure that is hollow inside and conical outside. A circle of threads is provided on the conical surface of the outside. The screw is composed of two semi-circular arc screws, and the outside is fastened by a nut. The steel insert is connected to the rubber hose for grouting through the self-tightening joint. The two semi-circular arc screws are wrapped around the outside of the rubber hose to form a circular ring structure, and the outside is provided with threads and nuts for fastening.

[0006] The specifications of the steel bars are the same as the main bars of the steel grating in the working pit.

[0007] The steel insert pipe and the rubber hose are fastened by a screw rod and a nut, and a conical thread is arranged inside the nut to match the screw rod.

[0008] The square steel plate and the steel insert are fixed by welding.

[0009] The utility model provides a sand layer jacking working well support steel pipe anchor and self-tightening joint, which brings the following beneficial effects:

[0010] (1) Steel pipe anchors are processed in factories and can be mass-produced and directly used in support structures, which speeds up the construction progress without incurring additional costs and ensures the safety and reliability of the support structure;

[0011] (2) When grouting steel pipes, self-tightening joints are set up. The joints can be reused after processing. On-site installation and disassembly are more convenient than traditional methods. The connection is safe and reliable, which improves the grouting efficiency.

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of a steel pipe anchor for supporting a pipe jacking working well in a sand layer.

[0014] Figure 2 It is a schematic diagram of the connection between the supporting steel insert pipe and the self-tightening joint of the utility model for the jacking working well in the sand layer.

[0015] In the figure: 1 is a steel insert, 2 is an anchor plate, 3 is a steel bar, 4 is a screw rod, 5 is a thread, 6 is a nut, 7 is a rubber hose, and 8 is a through hole. DETAILED DESCRIPTION Example

[0016] like Figure 1 and 2 As shown, a steel pipe anchor and self-tightening joint for supporting a jacking working shaft in a sandy soil layer include an anchor and a self-tightening joint, wherein the anchor includes an anchor plate 2 and a steel bar 3, wherein the anchor plate 2 is composed of a square steel plate, and two steel bars 3 are welded on both sides of the square steel plate, and the steel bar 3 is a U-shaped structure, and its ends are welded and connected to the main steel bars of the steel grating; a circular through hole 8 is provided in the center of the square steel plate, and the steel pipe 1 directly passes through the through hole 8, and the anchor plate 2 and the steel pipe 1 are fixed by welding.

[0017] The self-tightening joint is composed of a screw rod 4 and a nut 6. The screw rod is a hollow structure with a conical outer surface. A circle of external threads 5 is arranged on the conical surface of the screw rod. The screw rod is composed of two semi-circular arc screw rods, and the outer part is fastened by a nut. The steel cannula 1 is connected to the grouting rubber hose 7 through the self-tightening joint. The two semi-circular arc screw rods are wrapped around the outer side of the rubber hose to form a circular ring structure, and the outer side is provided with threads and fastened with nuts.

[0018] The specifications of the steel bars 3 are the same as the main bars of the steel grid in the working pit.

[0019] The steel cannula 1 and the rubber hose 7 are fastened by a screw rod 4 and a nut 6 , and a conical thread is provided inside the nut 6 to cooperate with the screw rod 4 .

[0020] The specific production method is:

[0021] ①Use the combination of steel plate and steel bar, weld two steel bars on both sides of the square steel plate. The steel bar specifications are the same as the main bars of the steel grille in the working well. Process it into a U shape and weld it to the main bars of the steel grille. The welding length of the steel bar, steel plate and main bars of the steel grille is strictly implemented in accordance with the specifications to ensure firmness and reliability. The above welding is completed directly in the steel bar processing plant, which is efficient and has better quality assurance. A circular hole is processed in the middle of the steel plate in advance, and the steel plug is directly passed through the circular hole on site. Finally, the circular hole and the steel plug can be welded on site;

[0022] ② When the steel pipe is grouting, a new type of self-tightening joint is used to connect the grouting rubber hose. The self-tightening joint consists of two parts of the screw and the nut outside. Figure 2 As shown, the internal screw part adopts a segmented structure, consisting of two semicircular arc screws. The outside of the screw is provided with threads, which can play a self-tightening role when matched with the nut. The joint is simple, and on-site installation and disassembly are relatively simple.

Claims

1. A steel pipe anchor and self-tightening joint for supporting a pipe jacking work well in a sand layer, characterized by: It includes an anchor and a self-tightening joint. The anchor includes an anchor plate and a steel bar. The anchor plate is a square steel plate. Two steel bars are welded on both sides of the square steel plate. The steel bar is a U-shaped structure. Both ends of the steel bar are welded and connected with the main steel bar of the steel grid. A circular through hole is provided in the center of the square steel plate. The steel insert is directly passed through the through hole and fixed. The self-tightening joint is composed of a segmented screw and a nut. The screw is a structure that is hollow inside and conical outside. A circle of threads is provided on the external conical surface. The screw is composed of two semi-circular arc screws and is fastened on the outside by a nut. The steel insert is connected to the rubber hose for grouting through the self-tightening joint.

2. The supporting steel pipe anchor and self-tightening joint for the pipe jacking work well in the sand layer according to claim 1 is characterized by: Two semicircular arc screws are wrapped around the outside of the rubber hose to form a circular ring structure. The steel insert and the rubber hose are fastened by screws and nuts. The inner side of the nut is provided with a conical thread to cooperate with the screw.

3. The supporting steel pipe anchor and self-tightening joint for the pipe jacking work well in the sand layer according to claim 1 is characterized by: The specifications of the steel bars are the same as the main bars of the steel grating in the working pit.

4. The supporting steel pipe anchor and self-tightening joint for the pipe jacking work well in the sand layer according to claim 1 is characterized by: The square steel plate and the steel insert are fixed by welding.

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