Micro pipe jacking construction well

Abstract

The utility model relates to a micro pipe jacking construction well which comprises a well way. The multiple steel rings are connected up and down to form a barrel shape, the steel rings are arranged in the hoistway, and the outer surfaces of the steel rings make contact with the inner wall of the hoistway; the bottom plate is arranged at the bottom of the hoistway; the propelling support frame is arranged on the bottom plate and comprises a lower panel arranged on the bottom plate; the side plate is vertically arranged, and the lower part of the side plate is connected with the lower panel; the propelling supporting frame further comprises a first-stage supporting rod and a second-stage supporting rod, wherein the first-stage supporting rod and the second-stage supporting rod are transversely arranged. One end of the first-stage supporting rod is connected with the side plate, the other end of the first-stage supporting rod is arranged on the second-stage supporting rod in a sleeving mode, and the end, away from the first-stage supporting rod, of the second-stage supporting rod makes contact with the inner surface of the steel ring. The bottom plate is arranged at the bottom of the hoistway, and the propelling supporting frame is arranged on the bottom plate. And the surface of the bottom plate is flat, so that equipment is convenient to mount and place, and the stability of the equipment can be better ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a micro-pipe jacking construction shaft. Background Technique

[0002] With the development of urban construction, the underground projects in urban areas face complex surrounding environments. The emergence of pipe jacking construction technology has solved the problems such as the damage to urban buildings and the blockage of road traffic during construction, and has highlighted its advantages in stabilizing soil layers and environmental protection. Pipe jacking construction technology is a non-excavation form of underground space construction technology. Its principle is to use a pipe jacking machine to push pipe segments through the soil layer from the launching shaft until they reach the receiving shaft, so as to form a through tunnel between the launching shaft and the receiving shaft. Compared with construction methods such as shield tunneling and open cut, pipe jacking construction technology has significant advantages such as low comprehensive cost and little traffic interference, and plays an important role in municipal engineering projects passing through areas with dense pipelines and traffic arteries.

[0003] However, during the construction of small-diameter pipe jacking, the small-diameter pipe jacking has higher requirements for the stability of the thrust. And the power to push the pipe jacking comes from the hydraulic propulsion equipment in the construction shaft. The space in the construction shaft is narrow, the installation conditions of the hydraulic propulsion equipment are simple, and the installation stability is not high. This makes the hydraulic propulsion equipment prone to deviation during the propulsion process, and the thrust of the hydraulic propulsion equipment on the micro-pipe jacking is unstable, making it difficult to meet the requirements of small-diameter micro-pipe jacking.

[0004] It should be noted that the information disclosed in the above background section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Content of the Utility Model

[0005] Aiming at the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a micro-pipe jacking construction shaft to enhance the installation stability of the hydraulic propulsion equipment.

[0006] The technical solution of the utility model is as follows:

[0007] A micro-pipe jacking construction shaft, including a shaft, characterized by further comprising:

[0008] Steel rings, a plurality of the steel rings are connected up and down to form a cylindrical shape, the steel rings are arranged in the shaft, and the outer surface of the steel rings contacts the inner wall of the shaft;

[0009] A bottom plate, arranged at the bottom of the shaft;

[0010] A propulsion support frame, arranged on the bottom plate, including:

[0011] A lower panel, arranged on the bottom plate;

[0012] The side plate is vertically arranged, and the lower part of the side plate is connected to the bottom plate.

[0013] Wherein, the propulsion support frame further includes a first support rod and a second support rod arranged horizontally; one end of the first support rod is connected to the side plate, the other end of the first support rod is sleeved on the second support rod, and the end of the second support rod away from the first support rod contacts the inner surface of the steel ring.

[0014] A further technical solution thereof is that a limiting plate is arranged on the lower surface of the bottom plate, and the limiting plate is snapped into the bottom plate.

[0015] A further technical solution thereof is that a fastening screw is threadedly connected to the first support rod, and the fastening screw faces the second support rod.

[0016] A further technical solution thereof is that an arc-shaped top plate is further arranged on the second support rod, and the outer arc surface of the arc-shaped top plate contacts the inner arc surface of the steel ring; the second support rod contacts the steel ring through the arc-shaped top plate.

[0017] A further technical solution thereof is that a tooth part is vertically arranged downward on the lower surface of the lowermost steel ring.

[0018] A further technical solution thereof is that the tooth part includes a plurality of first teeth and a plurality of second teeth, the first teeth are longer than the second teeth, and the first teeth and the second teeth are arranged alternately.

[0019] A further technical solution thereof is that the thickness of the second teeth is greater than the thickness of the first teeth.

[0020] A further technical solution thereof is that there is an arc transition between the first teeth and the second teeth, an arc transition between the first teeth and the steel ring, and an arc transition between the second teeth and the steel ring.

[0021] A further technical solution thereof is that adjacent steel rings are connected by welding, and the lower part of the steel ring is buried between the bottom plate and the shaft.

[0022] A further technical solution thereof is that the bottom plate is made of concrete.

[0023] The beneficial technical effects of the present utility model are as follows:

[0024] (1) In the micro-pipe jacking construction well of the present utility model, a bottom plate is provided at the bottom of the well passage, and a propulsion support frame is provided on the bottom plate. The surface of the bottom plate is flat, which is convenient for installing and placing equipment and can better ensure the stability of the placed equipment. In addition, when the propulsion support frame is placed on the bottom plate, the inner surface of the steel ring is contacted through the first-level support rod and the second-level support rod, enhancing the stability of the propulsion support frame to better install the hydraulic propulsion equipment. The first-level support rod and the second-level support rod are sleeved and connected, and the relative positions between the first-level support rod and the second-level support rod can be adjusted, so that the propulsion support member can be placed at different positions on the bottom plate, and the side plates can all be supported by the steel ring through the first-level support rod and the second-level support rod, improving the flexibility of placing the propulsion support frame.

[0025] (2) Further, a fastening screw is threadedly connected to the first-level support rod, and the fastening screw faces the second-level support rod. By screwing the fastening screw, it is convenient to drive the fastening screw to abut against the second-level support rod, thereby fixing the relative positions between the first-level support rod and the second-level support rod and making the total length of the first-level support rod and the second-level support rod fixedly support the side plate.

[0026] (3) Further, a tooth part is also provided below the steel ring, which is convenient for the steel ring to break the soil and improves the efficiency of processing the construction well. Description of the Drawings

[0027] Figure 1 Shows the cross-sectional structure diagram of the micro-pipe jacking construction well of the present utility model after backfilling.

[0028] Figure 2 Shows a partial cross-sectional view of the micro-pipe jacking construction well of the present utility model in the state of installing the propulsion support frame.

[0029] Figure 3 Shows a partial structural schematic diagram of the steel ring in the micro-pipe jacking construction well of the present utility model.

[0030] Reference Signs in the Drawings:

[0031] 1, well passage; 2, bottom plate; 3, steel ring; 4, propulsion support frame; 41, lower panel; 42, limiting plate; 43, side plate; 44, first-level support rod; 45, second-level support rod; 46, fastening screw; 47, arc top plate; 5, tooth part; 51, first tooth; 52, second tooth. Detailed Embodiment

[0032] In order to make the objectives, features, and advantages of the present utility model more apparent and understandable, please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have any substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy that the present utility model can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0033] In the description of the present utility model, the defined terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model.

[0034] Figure 1 The cross-sectional structure diagram after backfilling of the micro-pipe jacking construction well of the present utility model is shown. Figure 2 The partial cross-sectional view of the micro-pipe jacking construction well of the present utility model in the state of installing the propulsion support frame 4 is shown. Please refer to Figure 1 and Figure 2, A micro pipe jacking construction well, comprising a well shaft 1, a steel ring 3, a bottom plate 2 and a propulsion support frame 4. A plurality of steel rings 3 are connected up and down to form a cylinder, the steel ring 3 is arranged in the well shaft 1, and the outer surface of the steel ring 3 contacts the inner wall of the well shaft 1. The bottom plate 2 is arranged at the bottom of the well shaft 1. The surface of the plate is flat, which is convenient for installing and placing equipment and can better ensure the stability of the installed equipment. The propulsion support frame 4 is arranged on the bottom plate 2, and the propulsion support frame 4 includes a lower panel 41 and side plates 43. The lower panel 41 is arranged on the bottom plate 2. The side plates 43 are arranged vertically, and the lower part of the side plates 43 is connected to the lower panel 41. Among them, the propulsion support frame 4 further includes a horizontally arranged first support rod 44 and a second support rod 45. One end of the first support rod 44 is connected to the side plate 43, and the other end of the first support rod 44 is sleeved on the second support rod 45. The end of the second support rod 45 away from the first support rod 44 contacts the inner surface of the steel ring 3. The propulsion support frame 4 contacts the inner surface of the steel ring 3 through the first support rod 44 and the second support rod 45, enhancing the stability of the propulsion support frame 4 to better install the hydraulic propulsion equipment. The first support rod 44 and the second support rod 45 are sleeved and connected. Adjusting the relative position between the first support rod 44 and the second support rod 45 can make the propulsion support member placed at different positions on the bottom plate 2, and the side plates 43 can be supported by the steel ring 3 through the first support rod 44 and the second support rod 45, improving the flexibility of placing the propulsion support frame 4.

[0035] The specific structures of the propulsion support frame 4 and the bottom plate 2 are described as follows:

[0036] Please refer to Figure 1 and Figure 2 , a limiting plate 42 is arranged on the lower surface of the lower panel 41, and the limiting plate 42 is clamped into the bottom plate 2. Specifically, the bottom plate 2 is made of concrete. When pouring the bottom plate 2 with concrete, the limiting plate 42 is inserted into the unfixed concrete. After the concrete dries, the dried concrete firmly connects the limiting plate 42, thereby ensuring the connection strength between the propulsion support frame 4 and the bottom plate 2.

[0037] Furthermore, a fastening screw 46 is threadedly connected to the first support rod 44, and the fastening screw 46 faces the second support rod 45. By turning the fastening screw 46, it is convenient to drive the fastening screw 46 to abut against the second support rod 45, thereby fixing the relative position between the first support rod 44 and the second support rod 45 and making the total length of the first support rod 44 and the second support rod 45 fixedly support the side plate 43.

[0038] Furthermore, an arc-shaped top plate 47 is also arranged on the second support rod 45, and the outer arc surface of the arc-shaped top plate 47 contacts the inner arc surface of the steel ring 3. The second support rod 45 contacts the steel ring 3 through the arc-shaped top plate 47. The arc-shaped top plate 47 increases the connection area between the second support rod 45 and the steel ring 3 and enhances the stability of the connection between the second support rod 45 and the steel ring 3.

[0039] The specific structure of the steel ring 3 is described as follows:

[0040] Figure 3 The partial structural schematic diagram of the steel ring in the micro-pipe jacking construction well of the present utility model is shown. Please refer to Figure 1 and Figure 3 , on the lower surface of the lowermost steel ring 3, a tooth part 5 is vertically arranged downward. The tooth part 5 facilitates the steel ring 3 to break through the soil and improves the efficiency of processing the construction well. The tooth part 5 includes a plurality of first teeth 51 and a plurality of second teeth 52. Among them, the first teeth 51 are longer than the second teeth 52, the first teeth 51 and the second teeth 52 are arranged alternately, and the thickness of the second teeth 52 is greater than that of the first teeth 51. When the steel ring 3 is inserted into the soil, the longer first teeth 51 first break through the soil, and then the second teeth 52 with a larger thickness break through the soil for the second time, facilitating the subsequent insertion of the steel ring 3 into the soil. There is an arc transition between the first teeth 51 and the second teeth 52, an arc transition between the first teeth 51 and the steel ring 3, and an arc transition between the second teeth 52 and the steel ring 3. The resistance encountered when the tooth part 5 is inserted into the soil is reduced. Adjacent steel rings 3 are connected by welding, that is, the size of a single steel ring 3 is small, which is convenient for transportation. The lower part of the steel ring 3 is buried between the bottom plate 2 and the shaft 1, enhancing the stability of the steel ring 3 in the shaft 1.

[0041] The specific working process of the present utility model is as follows:

[0042] On-site, multiple steel rings 3 are welded into a whole. The welded steel rings 3 are inserted into the soil through a pipe jacking machine. During this process, the longer first teeth 51 first break through the soil, then the second teeth 52 with a larger thickness break through the soil for the second time, and finally the subsequent steel rings 3 are inserted into the soil. After the steel rings are inserted into the soil to a sufficient depth, the soil inside the steel rings 3 is excavated to form the shaft 1. Concrete is poured at the bottom of the shaft 1, and during the curing process of the concrete, the limiting plate 42 is inserted into the concrete, and the concrete dries to form the bottom plate 2. Then, the secondary support rod 45 is slid along the primary support rod 44 until the secondary support rod 45 contacts the inner side of the steel ring 3, and the fastening screw 46 is tightened. The setting of the construction well is completed, and a hydraulic jacking device can be installed for micro-pipe jacking construction. After the construction is completed, the propulsion support frame 4 is removed, the steel rings 3 are pulled out, and the shaft 1 is backfilled.

[0043] It can be seen that in the above-mentioned micro-pipe jacking construction well, a bottom plate 2 is provided at the bottom of the shaft 1, and a propulsion support frame 4 is provided on the bottom plate 2. The surface of the bottom plate 2 is flat, which is convenient for installing and placing equipment and can better ensure the stability of the installed equipment. In addition, while the propulsion support frame 4 is placed on the bottom plate 2, the inner surface of the steel ring 3 is contacted through the primary support rod 44 and the secondary support rod 45, enhancing the stability of the propulsion support frame 4 to better install the hydraulic jacking device.

[0044] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0045] The above embodiments only express several implementation manners of the present utility model, and the description is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A micro pipe jacking construction well, comprising a well passage, characterized in that, It further includes: Steel rings, a plurality of which are connected up and down to form a cylinder, the steel rings are arranged in the shaft, and the outer surface of the steel rings contacts the inner wall of the shaft; A bottom plate, arranged at the bottom of the shaft; A propulsion support frame, arranged on the bottom plate, including: A lower panel, arranged on the bottom plate; Side plates, arranged vertically, and the lower part of the side plates is connected to the lower panel; Wherein, the propulsion support frame further includes a first-level support rod and a second-level support rod arranged horizontally; one end of the first-level support rod is connected to the side plate, the other end of the first-level support rod is sleeved on the second-level support rod, and the end of the second-level support rod away from the first-level support rod contacts the inner surface of the steel ring.

2. The micro-pipe jacking construction well according to claim 1, characterized in that: A limiting plate is arranged on the lower surface of the lower panel, and the limiting plate is snapped into the bottom plate.

3. The micro-pipe jacking construction well according to claim 1, characterized in that: A fastening screw is threadedly connected to the first-level support rod, and the fastening screw faces the second-level support rod.

4. The micro-pipe jacking construction well according to claim 1, characterized in that: An arc-shaped top plate is further arranged on the second-level support rod, and the outer arc-shaped surface of the arc-shaped top plate contacts the inner arc-shaped surface of the steel ring; the second-level support rod contacts the steel ring through the arc-shaped top plate.

5. The micro-pipe jacking construction well according to claim 1, wherein: A tooth part is vertically arranged downward on the lower surface of the lowermost steel ring.

6. The micro-pipe jacking construction well according to claim 5, wherein: The tooth part includes a plurality of first teeth and a plurality of second teeth, the first teeth are longer than the second teeth, and the first teeth and the second teeth are arranged alternately.

7. The micro-pipe jacking construction well according to claim 6, characterized in that: The thickness of the second teeth is greater than the thickness of the first teeth.

8. The micro-pipe jacking construction well according to claim 6, characterized in that: There is an arc transition between the first teeth and the second teeth, an arc transition between the first teeth and the steel ring, and an arc transition between the second teeth and the steel ring.

9. The micro-pipe jacking construction well according to claim 1, characterized in that: Adjacent steel rings are connected by welding, and the lower part of the steel ring is buried between the bottom plate and the shaft.

10. The micro pipe jacking construction well according to claim 1, characterized in that: The bottom plate is made of concrete.

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