Rapid miniature pipe jacking machine applied to short distance

Abstract

The utility model discloses a quick miniature pipe jacking machine applied to short distance, which comprises a leading tool pipe, a pushing driving mechanism, a pushing plate, a jacking pipe and a spiral unearthing mechanism, the leading tool pipe is arranged at the front end of the jacking pipe, and the pushing driving mechanism comprises a pushing shaft and a pushing driving source. One end of each pushing shaft is in driving connection with an output shaft of the corresponding pushing driving source, the other end of each pushing shaft is fixedly connected with one side of the pushing plate, the multiple pushing driving mechanisms are arranged, the multiple pushing shafts and the multiple pushing driving sources are integrally formed, and the multiple pushing shafts are arranged in parallel; the end faces of the ends, away from the pushing driving source, of the multiple pushing shafts are located on the same horizontal plane. The pushing driving mechanisms are arranged in the working well through the leveling base, and the leveling base is arranged at the bottom end of the working well. The miniature pipe jacking device is applied to the field of miniature pipe jacking in which the distance between a working well and a receiving well is short, the project construction efficiency is improved, the project progress is facilitated, and the project investment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking, in particular to a fast micro pipe jacking machine used for short distances. Background Art

[0002] Traditional micro-pipe jacking technology is a commonly used technology in underground pipeline construction, especially when urban underground space is limited or large-scale excavation is not allowed on the surface. This technology is mainly used to install small-diameter pipes, such as drainage pipes, cable pipes, etc.

[0003] The traditional micro pipe jacking technology is generally a secondary pipe jacking process. First, the construction site must be arranged and geological surveys must be conducted. Secondly, pits for installing the pipe jacking machine and receiving pipes must be excavated to determine the axis, elevation and control points of the pipeline. The pipe jacking machine must be installed in the working pit and adjusted to the correct position. Secondly, the front guide pipe must be installed on the pipe jacking machine and pushed through into the receiving well to complete the first jacking. Then the inner pipe of the front guide pipe must be pulled out and replaced with a spiral conveying pipe. The reaming cutting head must be installed to jack the pipeline and excavate it through the spiral excavation mechanism. During the jacking process of the pipeline, slurry is injected around the pipeline to reduce friction. Finally, as the pipeline is jacked, the prefabricated pipeline is connected section by section. The above is the construction process of the traditional micro pipe jacking technology. The entire process requires two jacking constructions. The construction steps are relatively complex, difficult and time-consuming. It is more suitable for long-distance jacking work, that is, the distance between the working well and the receiving well is far.

[0004] However, in our daily construction, we often encounter short-distance jacking of small-diameter pipes with a diameter of less than 500mm and a length of less than 50mm. The above method has low work efficiency and complicated construction process, which is not conducive to the progress of the project and increase of project investment. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and provide a fast micro pipe jacking machine for short distances, so as to solve the technical problems in the field of short-distance pipe jacking technology, such as low work efficiency, complex construction process, disadvantageous to project progress and increased project investment.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model provides a fast micro pipe jacking machine applied to short distances, comprising:

[0007] Pilot tool pipe, jacking drive mechanism, pushing plate, jacking pipe and spiral soil discharging mechanism; the pilot tool pipe is placed at the front end of the jacking pipe; the jacking drive mechanism includes a jacking shaft and a jacking drive source; one end of the jacking shaft is drivingly connected to the output shaft of the jacking drive source; the other end of the jacking shaft is fixedly connected to one side of the pushing plate; a plurality of the jacking drive mechanisms are provided; the plurality of jacking shafts and the plurality of jacking drive sources are integrally formed; the plurality of jacking shafts are arranged in parallel; the end faces of the plurality of jacking shafts away from the jacking drive source are in the same horizontal plane.

[0008] The plurality of jacking drive mechanisms are arranged in the working shaft through a leveling base; the leveling base is arranged at the bottom end of the working shaft; the jacking drive mechanism is arranged at the top end of the leveling base.

[0009] Compared with the prior art, the beneficial effects of the present utility model include:

[0010] 1. High working efficiency: The rapid micro-tunneling machine for short distances provided by this utility model utilizes the principle of a Luoyang shovel. Through the jacking drive mechanism, the pilot tool pipe is directly inserted through to the receiving shaft at one time. The spiral soil discharging mechanism is used to discharge the soil in the jacking pipe. The construction is simple, greatly improving the jacking working efficiency of the jacking pipe.

[0011] 2. High safety and higher structural stability of the working shaft: The rapid micro-tunneling machine for short distances provided by this utility model sets the shape of the jacking reaction plate as an arc, increasing the contact area with the working shaft, so that the reaction force generated during the jacking work of the jacking drive mechanism is evenly applied to the inner wall of the working shaft, preventing the generated reaction force from concentrating at a point on the inner wall of the working shaft, which may cause structural damage to the working shaft, and improving its structural stability.

[0012] 3. Low project investment: Compared with the traditional micro-tunneling machine, the rapid micro-tunneling machine for short distances provided by this utility model has a more simplified process and lower human and material resources. Description of the Drawings

[0013] Figure 1 is the front view structural schematic diagram of the rapid micro-tunneling machine for short distances provided by the present utility model;

[0014] Figure 2 is the top view structural schematic diagram of the working shaft in the rapid micro-tunneling machine for short distances provided by the present utility model;

[0015] Figure 3 is the installation structural schematic diagram of the jacking pipe and the pushing plate in the rapid micro-tunneling machine for short distances provided by the present utility model;

[0016] Figure 4It is a schematic structural diagram of the spiral soil discharging mechanism in the fast micro pipe jacking machine for short distances provided by the present utility model. Detailed implementation manners

[0017] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manners.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used herein in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0020] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , this embodiment provides a fast micro pipe jacking machine applied to short distances, including: a jacking drive mechanism 1, a pushing plate 2, a jacking pipe 3, a spiral soil discharging mechanism 4, and a jacking reaction force plate 5.

[0021] Furthermore, the jacking drive mechanism 1 includes a jacking shaft 11 and a jacking drive source 12. One end of the jacking shaft 11 is drivingly connected to the output shaft of the jacking drive source 12, and the other end of the jacking shaft 11 is fixedly connected to one side of the pushing plate 2. There are multiple jacking drive mechanisms 1. The multiple jacking shafts 11 and the multiple jacking drive sources 12 are integrally formed. The multiple jacking shafts 11 are arranged in parallel, and the end faces of the multiple jacking shafts 11 away from the jacking drive source 12 are in the same horizontal plane.

[0022] Furthermore, the leading tool pipe includes a steel casing 9 and a conical soil bin 10. Specifically, the conical soil bin belongs to the lower end area of the inner cavity of the steel casing 9. The steel casing 9 is pushed into the soil under the action of the jacking drive mechanism 1, so that the soil body is squeezed into the conical soil bin 10. One end of the screw soil discharging mechanism 4 is inserted into the conical soil bin 10 and discharges the soil body in the conical soil bin 10.

[0023] The jacking drive mechanism 1 can be an electric push rod or a hydraulic jacking device. When the soil is soft (N≤15, N represents the number of hammer blows in the standard penetration test), the required thrust is small, and the jacking drive mechanism can be an electric push rod, which is more convenient to drive with electricity. When the soil is hard (N>15, N represents the number of hammer blows in the standard penetration test), the required thrust is large, and the jacking drive mechanism can be a hydraulic jacking device, which is driven by electro-hydraulic, and the jacking work is more stable.

[0024] Preferably, in this embodiment, the jacking drive mechanism 1 is a hydraulic jacking device.

[0025] Preferably, in this embodiment, there are 3 jacking shafts 11 and jacking drive sources 12. The 3 jacking shafts 11 and the jacking drive sources 12 are arranged in parallel in an array. At the same time, the end faces of the 3 jacking shafts 11 far from the jacking drive source 12 are on the same horizontal plane. At the same time, the end faces of the 3 jacking shafts 11 far from the jacking drive source 12 are in contact with the side of the pushing plate 2 close to the jacking drive source 12.

[0026] Furthermore, multiple jacking drive mechanisms 1 are arranged in the working well 7 through a leveling base 6. The leveling base 6 is arranged at the bottom end of the working well 7, and the jacking drive mechanism 1 is arranged at the top end of the leveling base 6.

[0027] Specifically, the material of the leveling base 6 is steel, and the weight is heavy. When the leveling base 6 is placed at the bottom end of the working well 7, the weight of the leveling base 6 is used to compact and flatten the soil residue in the working well 7, so that the upper end face of the leveling base 6 is in a horizontal state, which is convenient for the arrangement of the jacking drive mechanism 1. If the upper end face of the leveling base 6 is in an inclined state, the jacking shaft 11 will be inclined accordingly, resulting in the inclination of the jacking pipe 3 and deviation from the set direction.

[0028] Furthermore, the jacking reaction plate 5 is arc-shaped, and the arc of the jacking reaction plate 5 is consistent with the arc of the working well 7. The jacking reaction plate 5 is placed in the inner cavity of the working well 7 and closely adheres to the inner wall of the working well 7.

[0029] Specifically, when the pushing drive mechanism 1 is lowered to the bottom of the working well 7, the pushing reaction force plate 5 is placed at one end of the pushing drive mechanism 1 close to the inner wall of the working well 7, so that the pushing reaction force plate 5 is in close contact with the inner wall of the working well 7.

[0030] Specifically, the shape of the pushing reaction force plate 5 is arc-shaped, which improves the safety of the jacking pipe jacking operation, increases the contact area with the working well 7, so that the reaction force generated when the pushing drive mechanism 1 performs the jacking operation is evenly applied to the inner wall of the working well 7, preventing the generated reaction force from concentrating at a point on the inner wall of the working well 7, which may cause structural damage to the working well 7.

[0031] Further, the fixed end of the pushing drive source 12 abuts against the pushing reaction force plate 5. The pushing reaction force plate 5 is provided with a first abutting platform 51 and a second abutting platform 52. The table surfaces of the first abutting platform 51 and the second abutting platform 52 are flat surfaces, and the first abutting platform 51, the second abutting platform 52 and the pushing reaction force plate 5 are integrally formed.

[0032] Specifically, the end face of the fixed end of the pushing drive source 12 is placed on the first abutting platform 51 and the second abutting platform 52, so that the end face of the fixed end of the pushing drive source 12 is in close contact with the table surfaces of the first abutting platform 51 and the second abutting platform 52. When the pushing drive source 12 works, it pushes the pushing shaft 11 to move towards the receiving well 8, thereby pushing the jacking pipe 3. When the jacking pipe 3 is jacked, a certain reaction force will be generated by the jacking force, which acts on the first abutting platform 51 and the second abutting platform 52. The setting of the first abutting platform 51 and the second abutting platform 52 reduces the damage caused by the reaction force generated by the pushing drive source 12 to the working well 7 and increases the structural stability of the working well 7.

[0033] Further, a pipe jacking limiting groove 2a is formed on the side of the pushing plate 2 away from the pushing drive source 12. The pipe jacking limiting groove 2a is circular to accommodate the end of the jacking pipe 3.

[0034] Specifically, the cross-section of the pipe jacking limiting groove 2a is circular, and the diameter of the pipe jacking limiting groove 2a is slightly larger than the pipe diameter of the jacking pipe 3, which is used for limiting the jacking pipe 3 to prevent the jacking pipe 3 from detaching from the pushing plate 2 when the jacking drive source 12 jacks the jacking pipe 3.

[0035] Furthermore, the spiral soil excavation mechanism 4 includes a spiral soil excavation driving source 41 and a bolt soil excavation assembly 42. The spiral soil excavation assembly 42 is inserted into the conical soil bin 10, and the soil in the conical soil bin 10 is spirally transported into the working well 7. The spiral soil excavation assembly 42 includes a spiral blade 421 and a spiral shaft 422. A plurality of the spiral blades 421 are fixedly connected to the peripheral wall of the spiral shaft 422. One end of the spiral shaft 422 is drivingly connected to the output end of the spiral soil excavation driving source 41. A plurality of the spiral shafts 422 are fixedly connected by bolts to increase the length of the spiral soil excavation assembly 42.

[0036] Specifically, when the jacking pipe 3 is jacked from the working well 7 into the receiving well 8, at this time, the spiral soil excavation mechanism 4 is used to spirally excavate the soil in the jacking pipe 3. The output shaft of the spiral soil excavation driving source 41 rotates to drive the spiral shaft 422 to rotate, thereby driving the spiral blade 421 to rotate, so as to transport the soil away from the jacking pipe 3. When the length of one section of the spiral soil excavation assembly 42 fails to penetrate into the receiving well 8, bolts are used for fixation, so that another section of the spiral soil excavation assembly 42 is fixedly connected to the previous section of the spiral soil excavation assembly 42, thereby increasing the spiral soil excavation distance until it penetrates into the receiving well 8.

[0037] Working principle: The rapid micro-tunneling machine applicable to short distances provided by the utility model includes a jacking driving mechanism 1, a pushing plate 2, a jacking pipe 3 and a spiral soil excavation mechanism 4. The jacking driving mechanism 1 includes a jacking shaft 11 and a jacking driving source 12. One end of the jacking shaft 11 is drivingly connected to the output shaft of the jacking driving source 12. The other end of the jacking shaft 11 is fixedly connected to one side of the pushing plate 2. A plurality of the jacking driving mechanisms 11 are provided. A plurality of the jacking shafts 11 and a plurality of the jacking driving sources 12 are integrally formed. A plurality of the jacking shafts 11 are arranged in parallel. The end faces of a plurality of the jacking shafts 11 far from the jacking driving source 12 are in the same horizontal plane. A plurality of the jacking driving mechanisms 1 are arranged in the working well through a leveling base 6. The leveling base 6 is arranged at the bottom end of the working well 7.

[0038] Specifically, the rapid micro-tunneling machine applicable to short distances provided by the utility model uses the jacking driving mechanism 1 to directly insert and penetrate the leading tool pipe 9 and the jacking pipe 3 into the receiving well 8, and uses the spiral soil excavation mechanism 4 to excavate the soil in the jacking pipe 3, which greatly improves the jacking work efficiency of the jacking pipe 3 and greatly reduces the investment of the project. Among them, the first abutting platform 51 and the second abutting platform 52 provided on the jacking reaction plate 5 greatly improve the stability of the working well 7 during the jacking process of the jacking pipe and improve the safety of the overall construction.

[0039] The specific implementation manners of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A fast micro pipe jacking machine for short distances, used in working wells, characterized in that: include: A leading tool pipe, a jacking drive mechanism, a propulsion plate, a jacking pipe and a spiral excavation mechanism; the leading tool pipe is placed at the front end of the jacking pipe; the jacking drive mechanism includes a jacking shaft and a jacking drive source; one end of the jacking shaft is drivingly connected to the output shaft of the jacking drive source; the other end of the jacking shaft is fixedly connected to one side of the propulsion plate; the jacking drive mechanism is provided with a plurality of jacking shafts and a plurality of jacking drive sources are integrally formed; The plurality of pushing shafts are arranged in parallel; and the end surfaces of the plurality of pushing shafts away from the pushing driving source are in the same horizontal plane.

2. The fast micro pipe jacking machine for short distances according to claim 1, characterized in that: The advance tool pipe includes a steel casing and a conical soil bin; the steel casing penetrates into the soil under the action of the jacking drive mechanism, so that the soil is squeezed into the conical soil bin; one end of the spiral excavation mechanism is inserted into the conical soil bin and discharges the soil in the conical soil bin.

3. The fast micro pipe jacking machine for short distances according to claim 2 is characterized in that: A plurality of the pushing drive mechanisms are arranged in the working well through a leveling base; the leveling base is arranged at the bottom end of the working well; and the pushing drive mechanism is arranged at the top end of the leveling base.

4. The fast micro pipe jacking machine for short distances according to claim 3 is characterized in that: It also includes a thrust reaction plate; the thrust reaction plate is in an arc shape; the arc shape of the thrust reaction plate is consistent with the arc shape of the working well; the thrust reaction plate is placed in the inner cavity of the working well and is close to the inner wall of the working well.

5. The fast micro pipe jacking machine for short distances according to claim 4, characterized in that: The fixed end of the push driving source abuts against the push reaction plate; the push reaction plate is provided with a first abutment platform and a second abutment platform; the surfaces of the first abutment platform and the second abutment platform are plane; the first abutment platform, the second abutment platform and the push reaction plate are integrally formed.

6. The fast micro pipe jacking machine for short distances according to claim 5, characterized in that: A jacking pipe limiting groove is provided on one side of the pushing plate away from the jacking driving source; the jacking pipe limiting groove is circular to accommodate the end of the jacking pipe.

7. The fast micro pipe jacking machine for short distances according to claim 6, characterized in that: The spiral excavation mechanism includes a spiral excavation driving source and a spiral excavation component; the spiral excavation component is inserted into the conical soil bin and spirally transmits the soil in the conical soil bin to the working well; the spiral excavation component includes a spiral blade and a spiral shaft; a plurality of the spiral blades are fixedly connected to the peripheral wall of the spiral shaft; one end of the spiral shaft is drivingly connected to the output end of the spiral excavation driving source; a plurality of the spiral shafts are fixedly connected by bolts to increase the length of the spiral excavation component.

Images