A tool pipe for artificial pipe jacking construction

Abstract

The utility model discloses a tool pipe for manual pipe jacking construction, including tool pipe, the tool pipe is the pipe body structure, and a circle annular end plate is welded in the tool pipe, a plurality of hexagon nuts are welded on the tool pipe inner wall, a plurality of protective steel bars that match with the screw hole diameter of hexagon nut are also installed on the tool pipe, the protective steel bar is inserted in the hexagon nut, and the front end is stretched outside the tool pipe, and the rear end is abutted on the end face of end plate, compared with prior art, the utility model welds hexagon nut on the tool pipe, and utilizes the steel bar to pass through the nut and hits into the soil layer to enhance the stability of soil layer, prevents the hole from collapsing, and ensures construction safety. Moreover, only need to weld hexagon nut in the corresponding position of tool pipe, and can insert protective steel bar according to need, and the technical reformation is simple, and the cost is low, and it is economic and practical, easy to implement, and the reinforcing effect is good, can improve construction safety significantly, improves the overall construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of trenchless construction technology for municipal engineering, and in particular to a tool pipe for manual pipe jacking construction. Background Technology

[0002] Manual pipe jacking is a trenchless construction technique widely used in urban underground pipeline projects. During construction, soil stability is crucial for safety. Existing soil reinforcement methods primarily involve injecting a solidifying grout into the soil to fill pores and bind soil particles, forming a unified reinforced body that improves soil strength and impermeability. This method is mainly suitable for deeper soil layers, requires sophisticated equipment, and is costly, making it unsuitable for shallow soils.

[0003] In some shallower soil layers, excavation is often carried out directly using jacking tools without any reinforcement, posing certain safety hazards. When workers discover loose soil that may collapse during excavation, temporary mechanical reinforcement methods are used in localized areas, such as driving in sheet piles and H-beams to form support structures and prevent soil collapse. This approach is not only inefficient but also suffers from inconsistent reinforcement effectiveness and questionable safety. A new type of reinforcement device is urgently needed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a tool pipe that is simple in structure, low in cost, safe and stable in construction, and suitable for manual pipe jacking construction.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tool tube for manual pipe jacking construction, comprising a tool tube, the tool tube being a tube structure, a ring-shaped end plate welded inside the tool tube, the front end of the tool tube being a cutting edge section, the upper part of the cutting edge section protruding forward to form an arc-shaped digging part, multiple hexagonal nuts welded on the inner wall of the tool tube, the hexagonal nuts being evenly spaced in a fan shape along the edge of the digging part, and multiple protective steel bars matching the diameter of the screw holes of the hexagonal nuts being installed on the tool tube, the protective steel bars being inserted into the hexagonal nuts, with the front end extending outside the tool tube and the rear end abutting against the end face of the end plate.

[0006] Preferably, the protective reinforcing bar is a threaded steel bar, available in various specifications with the same diameter but different lengths.

[0007] Preferably, the front ends of the protective reinforcing bars are all ground with a cutting edge that facilitates insertion into the soil layer.

[0008] Preferably, the spacing between the hexagonal nuts is 100mm.

[0009] Preferably, the front end of the cutting edge section is machined with a cutting edge that facilitates jacking into the soil layer.

[0010] Preferably, a ring of cement pipe is poured inside the tool tube, with the front end of the cement pipe tightly attached to the side wall of the end plate, and the rear end of the cement pipe having a notch to facilitate the insertion of the jacking pipe.

[0011] Preferably, the tool tube is also equipped with a protective railing to prevent collapse. The protective railing is made of metal pipes welded together in a crisscross pattern and is located at the upper front end of the tool tube.

[0012] Preferably, the guardrail is closely attached to the end plate and is welded and fixed to the inner wall of the tool tube and the side wall of the end plate, respectively.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] (1) This utility model enhances the stability of the soil layer, prevents hole collapse, and ensures construction safety by welding hexagonal nuts onto the tool tube and driving steel bars through the nuts into the soil layer. Moreover, it only requires welding hexagonal nuts at the corresponding positions on the tool tube and inserting protective steel bars as needed. The technical modification is simple, easy to implement, and has a good reinforcement effect, which can significantly improve construction safety and overall construction efficiency.

[0015] (2) Hexagonal nuts and threaded steel are common waste materials in engineering. They are inexpensive, economical and practical. They are not only easy to process and manufacture, but can also be reused, which reduces construction costs and meets the requirements of green and environmentally friendly construction.

[0016] (3) By selecting appropriate length and quantity of protective steel bars, the stability of the soil layer can be enhanced, the safety risks during construction can be reduced, and it is applicable to various soil conditions and has wide applicability.

[0017] (4) The addition of guardrails not only solved the problem of large-area collapse during soil excavation, but also increased the upper part of the ring end plate to be connected into a whole, improving the overall structural strength of the end plate. At the same time, it also increased the structural connection strength between the end plate and the tool tube, enabling it to better cope with axial stress. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front-end structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0020] Figure 3 This is a top view of the present invention.

[0021] In the diagram: 1. Tool pipe; 11. Excavation section; 2. End plate; 3. Cement pipe; 4. Hexagonal nut; 5. Protective steel reinforcement; 6. Guardrail. Detailed Implementation

[0022] The present invention will be further described below.

[0023] Example: A tool pipe for manual pipe jacking construction, including tool pipe 1, see [link / reference]. Figures 1 to 3 The tool tube 1 has a tube structure, and an annular end plate 2 is welded inside the tool tube 1. The front end of the tool tube 1 is a cutting edge section, and the upper part of the cutting edge section protrudes forward to form an arc-shaped digging part 11. The protruding arc-shaped digging part 11 structure facilitates the tool tube 1 to easily insert into the soil layer during the jacking process. Multiple hexagonal nuts 4 are welded on the inner wall of the tool tube 1. The hexagonal nuts 4 are evenly distributed in a fan shape along the edge of the digging part 11. The tool tube 1 is also equipped with multiple hexagonal nuts 5 that match the screw hole diameter of the hexagonal nuts 4. The hexagonal nuts 5 are inserted into the hexagonal nuts 4, and their installation and disassembly are very convenient. The front end of the hexagonal nut 5 extends outside the tool tube 1, which facilitates insertion into the soil to reinforce the soil layer above. The rear end of the hexagonal nut 5 abuts against the end face of the end plate 2, and the end plate 2 provides the thrust for insertion into the soil.

[0024] This utility model welds a hexagonal nut 4 onto the tool pipe 1, which facilitates the installation of a hexagonal nut 5 at the front end of the tool pipe 1. During the pipe jacking process, steel bars are inserted into the soil layer to enhance the stability of the soil layer above, prevent hole collapse, ensure construction safety, greatly reduce the risk of soil collapse, and improve construction efficiency.

[0025] The utility model has low modification cost. Both hexagonal nuts and threaded steel are common waste materials in engineering, which can realize waste utilization. It is not only simple to process and manufacture, but also can be reused, which meets the requirements of green and environmentally friendly construction.

[0026] Because the slump of soil layers varies in different geological conditions, this invention allows for the installation of different numbers and lengths of hexagonal nuts 5 to suit various soil conditions, thus possessing wide applicability. Multiple hexagonal nuts 4 provide convenience and space for the installation of hexagonal nuts 5. The hexagonal nuts 5 are made of threaded steel, which is readily available, has high structural strength, and comes in various specifications with the same diameter but different lengths, allowing selection based on soil conditions.

[0027] To facilitate better insertion of the hexagonal nuts 5 into the soil, a cutting edge is ground at the front end of the hexagonal nuts 5. The spacing of the hexagonal nuts 4 is 100mm, which can effectively prevent the soil above from collapsing. The front end of the cutting edge section is machined with a cutting edge to facilitate pushing into the soil layer.

[0028] A ring of cement pipe 3 is poured inside the tool pipe 1. The front end of the cement pipe 3 is close to the side wall of the end plate 2. The poured cement pipe 3 can effectively transfer the thrust of the jacking pipe to the pipe body of the tool pipe 1. The rear end of the cement pipe 3 has a notch to facilitate the insertion of the jacking pipe. The notch enables the tool pipe 1 to be connected and installed with the jacking pipe.

[0029] After the tool pipe 1 is pushed into the soil layer, workers need to excavate and transport the soil inside the tool pipe 1. Some larger pipes have a diameter of more than 2 meters. During the manual excavation process, the soil above is prone to fall, and if there are stones, they can easily injure people. Therefore, this utility model can add a protective railing 6 to the tool pipe 1 to prevent collapse. The protective railing 6 is made of metal pipes welded in a crisscross pattern and is located at the upper front end of the tool pipe 1. It can hold the soil in the upper part of the pipe to prevent large-scale soil collapse and facilitate soil excavation work.

[0030] The guardrail 6 is closely attached to the end plate 2 and is welded and fixed to the inner wall of the tool tube 1 and the side wall of the end plate 2 respectively. Through the above structure, the guardrail 6 not only solves the problem of large-area collapse during soil excavation, but also increases the connection of the upper part of the annular end plate 2 into a whole, improves the overall structural strength of the end plate 2, and also increases the structural connection strength between the end plate 2 and the tool tube 1, so that it can better cope with axial stress.

[0031] The above provides a detailed description of a tool pipe for manual pipe jacking construction provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, based on the idea of ​​this utility model, there will be changes in the specific implementation and application scope. Changes and improvements to this utility model are possible without exceeding the concept and scope specified in the appended claims. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A tool pipe for manual pipe jacking construction, comprising a tool pipe, characterized in that: The tool tube has a tubular structure with a ring-shaped end plate welded inside. The front end of the tool tube is a cutting edge section, and the upper part of the cutting edge section protrudes forward to form an arc-shaped digging part. Multiple hexagonal nuts are welded to the inner wall of the tool tube. The hexagonal nuts are evenly spaced in a fan shape along the edge of the digging part. The tool tube is also equipped with multiple protective steel bars that match the diameter of the screw holes of the hexagonal nuts. The protective steel bars are inserted into the hexagonal nuts, with their front ends extending outside the tool tube and their rear ends abutting against the end face of the end plate.

2. The tool pipe for manual pipe jacking construction according to claim 1, characterized in that: The protective reinforcing bars are threaded steel bars, available in various specifications with the same diameter but different lengths.

3. A tool pipe for manual pipe jacking construction according to claim 2, characterized in that: The front ends of the protective steel bars are all ground with cutting edges to facilitate insertion into the soil.

4. A tool pipe for manual pipe jacking construction according to claim 1, characterized in that: The hexagonal nuts are spaced 100mm apart.

5. A tool pipe for manual pipe jacking construction according to claim 1, characterized in that: The front end of the cutting edge section is machined with a cutting edge to facilitate pushing into the soil layer.

6. A tool pipe for manual pipe jacking construction according to claim 1, characterized in that: A ring of cement pipe is poured inside the tool tube. The front end of the cement pipe is close to the side wall of the end plate, and the rear end of the cement pipe has a notch to facilitate the insertion of the jacking pipe.

7. A tool pipe for manual pipe jacking construction according to claim 1, characterized in that: The tool tube is also equipped with a protective railing to prevent collapse. The protective railing is made of metal pipes welded together in a crisscross pattern and is located at the upper front end of the tool tube.

8. A tool pipe for manual pipe jacking construction according to claim 7, characterized in that: The guardrail is attached tightly to the end plate and is welded and fixed to the inner wall of the tool tube and the side wall of the end plate, respectively.

Images