Convenient insertion type large-diameter jacking pipe retaining device

Abstract

The utility model discloses a convenient plug-in type large-diameter jacking pipe retaining device. The convenient insertion type large-diameter jacking pipe retaining device comprises a supporting structure and longitudinal profile steel. The longitudinal section steel is arranged on the outer side of the pipe joint; the supporting structure comprises a profile steel bracket; the upper end of the profile steel support is fixedly connected with the longitudinal profile steel, and the lower end of the profile steel support is arranged on the bottom plate so as to achieve the supporting effect on the convenient insertion type large-diameter jacking pipe retaining device. Longitudinal profile steel reserved holes are formed in the longitudinal profile steel and matched with pipe joint hoisting holes formed in the pipe joints, and the longitudinal profile steel is connected with the pipe joints through iron pins. The convenient insertion type large-diameter pipe jacking retaining device is high in applicability, can be applied to pipe jacking working wells of different sizes and shapes by adjusting the size and length of the profile steel, is small in occupied space, and does not affect pipe joint jacking construction.

Description

Technical Field

[0001] The utility model relates to a pipe jacking machine construction technology, in particular to a convenient insertion type large-diameter pipe jacking anti-retraction device. Background Art

[0002] Pipe jacking is a trenchless pipeline construction technology used in the field of construction for complex geology and many ground structures. It has less impact on the surrounding environment, a small construction site, low noise, and is less affected by natural conditions. The general construction process is to first excavate the starting well for pipe jacking, use the pipe jacking machine to advance, and use the thrust of the main jacking cylinder of the jack and the relay room between pipelines to push behind the pipe jacking machine and the tool pipe, and push the tool pipe or pipe jacking machine from the starting well through the soil layer to the receiving well for lifting. In the process of the initial jacking of the pipe jacking machine head, the head-on soil pressure is greater than the friction between the pipe section and the head and the soil. Due to the effect of the soil pressure, the head and the pipe section will be pushed back, making it difficult to carry out the next step of pipe jacking construction. This problem often occurs, especially in deep and weak silt layers. There are generally two solutions to this problem. One is to reinforce the soil layer along the jacking route, but this method is not economical and has high requirements for the reinforcement effect. The other is to use auxiliary devices to prevent pushback. For example, there is a published patent CN116291611A, which is a detachable multifunctional jacking auxiliary device and method for rectangular jacking construction. However, this method requires special guide rails for construction, many types of materials, complex construction, high costs, and is not very practical. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a convenient insertable large-diameter jacking pipe stop device.

[0004] To achieve the above purpose, the utility model adopts the following technical solution: a convenient insertion type large diameter jacking pipe stop device, comprising a support structure and a longitudinal steel; the longitudinal steel is arranged on the outside of the pipe section;

[0005] The support structure includes a steel bracket; the upper end of the steel bracket is fixedly connected to the longitudinal steel, and the lower end is arranged on the bottom plate to achieve the supporting function of the convenient plug-in large-diameter jacking pipe stop device;

[0006] The longitudinal steel section is provided with a longitudinal steel section reserved hole, which is matched with the pipe section hoisting hole provided on the pipe section, and the connection between the longitudinal steel section and the pipe section is achieved through an iron pin.

[0007] In the utility model, the longitudinal steel is arranged along the axial direction of the pipe segment.

[0008] The provision of the medium-sized steel bracket of the utility model can not only increase the overall stability of the thrust stop device, but also serve as a vertical supporting component of the anti-retraction device to control the elevation accuracy of the longitudinal steel section reserved holes and ensure that the longitudinal steel section reserved holes are aligned with the pipe section lifting holes.

[0009] A further improvement is that the longitudinal steel sections are arranged in parallel on both sides of the pipe segment.

[0010] A further improvement is that the number of the longitudinal steel section is at least one.

[0011] A further improvement is that the steel support is in the form of a tripod support.

[0012] A further improvement is that the support structure also includes transverse steel sections.

[0013] A further improvement is that one end of the transverse steel is vertically arranged on the outside of the longitudinal steel and parallel to the horizontal plane; one end of the transverse steel away from the longitudinal steel is fixedly connected to the working pit enclosure structure; the transverse steel is fixedly connected to the longitudinal steel.

[0014] The fixed connection described in the present invention can be a welding or a threaded connection.

[0015] A further improvement is that channel steels are fixedly connected to both sides of the upper end of the steel support to increase the stability of the steel support.

[0016] A further improvement is that a pin shaft and a reinforcing rib are also provided on the inner side of the longitudinal steel section, and the pin shaft and the reinforcing rib are located at the longitudinal steel section reserved hole on the longitudinal steel section. They have two functions: one is to serve as a pin shaft for the iron pin to ensure smooth insertion of the iron pin and to transmit the force to the longitudinal steel section; the other is to enhance the strength of the convenient insertion type large diameter jacking pipe stop device to prevent the stop device from being deformed due to the reverse thrust of the pipe section after the iron pin is inserted.

[0017] A further improvement is that the longitudinal steel is in an I-shape; and the transverse steel is in an H-shape.

[0018] The longitudinal steel in the utility model can be made of Q235 steel with a specification of 300×305×15×15 steel. The steel material and specification can also be adjusted according to the actual situation on site. The length of the longitudinal steel is adjusted according to the position of the pipe segment lifting hole, and is at least not shorter than the sum of the length of 3 pipe segments, the jack and the back wall.

[0019] The transverse steel in the utility model can be made of Q235 steel with a specification of 194×150×6×9 steel. The steel material and specification can also be adjusted according to the actual situation on site, and the length can be determined according to the actual situation on site.

[0020] A further improvement is that the longitudinal steel reserved hole is cut and manufactured on the longitudinal steel, has a diameter of 100-200 mm, and is arranged in the middle of the longitudinal steel.

[0021] A further improvement is that 2-4 longitudinal steel section reserved holes can be provided, and the spacing is the same as the spacing of the pipe segment lifting holes.

[0022] A further improvement is that the pipe segment hoisting hole is welded in the steel bar skeleton of the pipe segment, is made integrally with the pipe segment, and is fixed inside the pipe segment.

[0023] The utility model can set the lifting hole of the middle pipe section by welding a seamless steel pipe with a thickness of 8mm and a diameter of 121mm to a steel plate with a thickness of 5mm and a diameter of 1500mm, and then set anchor bars around the seamless steel pipe. The anchor bars have a diameter of 8mm, a length of 200mm, a spacing of 60mm, and a total of 24 bars.

[0024] The setting of the pipe section lifting hole in the utility model can better transmit the force to the pipe section without causing damage to the pipe section; at the same time, it can be used as the pin shaft of the iron pin, so that the reaction force of the convenient insertion type large-diameter jacking pipe stopping device of the utility model can be better transmitted to the pipe section; in addition, it can also be used as the pipe section lifting hole for lifting and transportation.

[0025] Further improvements are that the diameter of the iron pin is 100-150mm; a handle is provided on the iron pin; and the length of the iron pin is not less than the sum of the depth of the pipe segment lifting hole and the width of the longitudinal steel section.

[0026] The arrangement of the iron pin in the utility model can transmit the pipe segment back thrust to the longitudinal steel section and provide reaction force after being inserted into the anti-retraction device and the pipe segment hoisting hole, and is a key force transmission component.

[0027] Compared with the prior art, the beneficial effects of the utility model are:

[0028] (1) The components of the convenient insertable large-diameter jacking stop device of the utility model are made of steel sections, which are easy to obtain, simple to manufacture and install, convenient to construct, can be quickly applied, and have a fast construction speed, which effectively improves the construction efficiency. At the same time, it can be recycled, and the steel sections, iron pins, etc. can be disassembled and reused, which has good economy.

[0029] (2) The utility model has a convenient insertable large-diameter jacking pipe stop device with strong applicability. By adjusting the length of the steel section, it can be used in jacking pipe working pits of different sizes and shapes. In addition, the device occupies little space and does not affect the jacking construction of the pipe section.

[0030] (3) The utility model has a convenient insertion type large-diameter jacking pipe anti-retraction device with a low operating threshold, and the anti-retraction effect is achieved by inserting and pulling out the iron pin, which is simple and easy to operate.

[0031] (4) The utility model convenient insertion type large diameter jacking pipe anti-retraction device utilizes the lifting hole of the original pipe joint as the force-bearing part of the anti-retraction device, thereby reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0033] Attached Figure 1 It is a plan view of the convenient insertable large-diameter jacking pipe anti-retraction device of the utility model.

[0034] Attached Figure 2 It is an enlarged schematic diagram of structure A in the plan view of the convenient insertable large-diameter jacking pipe stopping device of the utility model.

[0035] Attached Figure 3 It is a cross-sectional view of the convenient insertion type large-diameter jacking pipe anti-retraction device of the utility model.

[0036] Attached Figure 4 It is a vertical view of the convenient insertable large-diameter jacking pipe anti-retraction device of the utility model.

[0037] Attached Figure 5 It is an enlarged schematic diagram of the B structure in the elevation view of the convenient insertable large-diameter jacking pipe stopping device of the utility model.

[0038] Attached Figure 6 It is a structural schematic diagram of the utility model's convenient insertion type large-diameter jacking pipe stop device before the iron pin is inserted.

[0039] Attached Figure 7 It is a schematic structural diagram of the utility model after the iron pin of the convenient insertion type large-diameter jacking pipe stopping device is inserted.

[0040] Attached Figure 8 It is a structural schematic diagram of the pipe section lifting hole in the convenient insertion type large-diameter jacking pipe stopping device of the utility model.

[0041] Among them: 1. Longitudinal steel; 2. Horizontal steel; 3. Steel bracket; 4. Reserved holes in longitudinal steel; 5. Iron pins; 6. Pipe segment lifting holes; 61. Seamless steel pipe; 62. Steel plate; 63. Anchor bars; 7. Pins and reinforcing ribs; 8. Guide rails; 9. Bottom plate; 10. Tunnel door; 11. Pipe segment; 12. Pipe jacking machine; 13. Hydraulic jack; 14. Back wall; 15. Working pit enclosure structure. DETAILED DESCRIPTION

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be said to be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments.

[0043] Reference Figure 1-8 A convenient insertion type large diameter jacking pipe stop device comprises a support structure and a longitudinal steel section 1; the longitudinal steel section 1 is arranged outside the pipe section 11;

[0044] The support structure includes a steel bracket 3; the upper end of the steel bracket 3 is fixedly connected to the longitudinal steel 1, and the lower end is arranged on the bottom plate 9 to achieve the supporting function of the convenient plug-in large-diameter jacking pipe stop device;

[0045] The longitudinal steel section 1 is provided with a longitudinal steel section reserved hole 4 , which is matched with the pipe section hoisting hole 6 provided on the pipe section 11 , and the longitudinal steel section 1 is connected to the pipe section 11 through an iron pin 5 .

[0046] In the utility model, the longitudinal steel 1 is arranged along the axial direction of the pipe segment 11 .

[0047] The longitudinal steel section 1 in the utility model is provided as the main force transmission component of the anti-retraction device, which is not only used to connect other device components, but also has sufficient strength to transmit reaction force.

[0048] The setting of the medium-sized steel bracket 3 of the utility model can increase the overall stability of the thrust stop device; at the same time, it can also serve as a vertical supporting component of the anti-retraction device to control the elevation accuracy of the longitudinal steel reserved hole 4 and ensure that the longitudinal steel reserved hole 4 is aligned with the pipe segment lifting hole 6.

[0049] The working principle of this utility model:

[0050] The first step is to complete the construction of the anti-retraction device. First, construct the steel support 3 and place it on the bottom plate 9, then install the longitudinal steel 1, and set it above the steel support 3 for fixed connection; the second step is to hoist and push the pipe section 11 into place. At this time, the jack will retract the pipe section and push it back. Therefore, the jack is started to push the pipe section 11 until the pipe section hoisting hole 6 and the longitudinal steel reserved hole 4 are on the same center line and then stop pushing; the third step is to insert the iron pin 5 into the longitudinal steel reserved hole 4 and the pipe section hoisting hole 6 to prevent the pipe section 11 from pushing back; the fourth step is to retract the jack, hoist the new pipe section onto the guide rail, and push it to the rear of the previous pipe section; the fifth step is to remove the iron pin 5 and start the hydraulic jack to continue the jacking construction; the sixth step is to repeat the operations of the second step to the fifth step; the seventh step is to push the pipe forward to ensure that the pipe section does not push back or remove the anti-retraction device for recycling after the jacking construction is completed.

[0051] The fixed connection described in the present invention can be a welding or a threaded connection.

[0052] As a preferred embodiment of the present invention, the longitudinal steel sections 1 are arranged in parallel on both sides of the pipe section 11 .

[0053] As a preferred embodiment of the present invention, the number of the longitudinal steel section 1 is at least one.

[0054] As a preferred embodiment of the present utility model, the steel support 3 is in the form of a tripod support.

[0055] As a preferred embodiment of the present invention, the support structure further includes a transverse steel section 2 .

[0056] As a preferred embodiment of the utility model, one end of the transverse steel section 2 is vertically arranged on the outside of the longitudinal steel section 1 and parallel to the horizontal plane; the end of the transverse steel section 2 away from the longitudinal steel section 1 is fixedly connected to the working pit enclosure structure 15; the transverse steel section 2 is fixedly connected to the longitudinal steel section 1.

[0057] In the utility model, a transverse steel section 2 can be arranged on the outer side of the longitudinal steel section 1 to further increase the overall stability of the convenient insertable large-diameter jacking pipe stopping device and avoid twisting of the longitudinal steel section 1. At the same time, the transverse steel section 2 is made of steel, which is easy to obtain and simple to construct, and is convenient for subsequent dismantling and recycling.

[0058] As a preferred embodiment of the present invention, channel steels are fixedly connected to both sides of the upper end of the steel support 3 to increase the stability of the steel support.

[0059] As a preferred embodiment of the utility model, a pin shaft and a reinforcing rib 7 are also provided inside the longitudinal steel 1, and the pin shaft and the reinforcing rib 7 are located at the longitudinal steel reserved hole 4 on the longitudinal steel 1. They have two functions: one is to serve as a pin shaft for the iron pin 5 to ensure smooth insertion of the iron pin and to transmit the force to the longitudinal steel; the other is to enhance the strength of the convenient insertion type large diameter jacking pipe stop device to prevent the stop device from being deformed due to the reverse thrust of the pipe section after the iron pin is inserted.

[0060] As a preferred embodiment of the present invention, the longitudinal steel section 1 is in an I-shape; the transverse steel section 2 is in an H-shape.

[0061] The longitudinal steel section 1 in the utility model can be made of Q235 steel with a specification of 300×305×15×15 steel. The steel material and specification can also be adjusted according to the actual situation on site. The length of the longitudinal steel section 1 is adjusted according to the position of the pipe segment lifting hole 6, and is at least not shorter than the sum of the length of 3 pipe segments, the jack, and the back wall.

[0062] The transverse steel 2 in the present invention can be made of Q235 steel with specifications of 194×150×6×9 steel. The steel material and specifications can also be adjusted according to the actual situation on site, and the length can be determined according to the actual situation on site.

[0063] The longitudinal steel sections 1 and the transverse steel sections 2 in the utility model are both made of steel sections, which can effectively reduce the difficulty of construction. After the subsequent anti-retraction device is used, it can also be cut, dismantled and recycled, which is beneficial to reducing construction costs.

[0064] As a preferred embodiment of the utility model, the longitudinal steel reserved hole 4 is cut and manufactured on the longitudinal steel 1 , has a diameter of 100-200 mm, and is arranged in the middle of the longitudinal steel 1 .

[0065] As a preferred embodiment of the utility model, the longitudinal steel reserved holes 4 can be set 2-4, and the spacing is the same as the spacing of the pipe segment hanging holes 6. The longitudinal steel reserved holes 4 are set to better control the insertion position of the iron pin 5.

[0066] As a preferred embodiment of the present utility model, the pipe segment hoisting hole 6 is welded in the steel reinforcement skeleton of the pipe segment 11, is made integrally with the pipe segment, and is fixed inside the pipe segment.

[0067] See also Figure 8 The utility model can be provided with the hoisting hole 6 of the middle pipe section by welding a seamless steel pipe 61 with a thickness of 8 mm and a diameter of 121 mm and a steel plate 62 with a thickness of 5 mm and a diameter of 1500 mm, and then an anchor bar 63 is provided around the seamless steel pipe. The anchor bar has a diameter of 8 mm, a length of 200 mm, a spacing of 60 mm, and a total of 24 bars.

[0068] The setting of the pipe section lifting hole 6 in the utility model can better transmit the force to the pipe section without causing damage to the pipe section; at the same time, it can be used as the pin shaft of the iron pin 5, so that the reaction force of the convenient insertion type large-diameter jacking pipe stopping device of the utility model can be better transmitted to the pipe section; in addition, it can also be used as a pipe section lifting hole for lifting and transportation.

[0069] As a preferred embodiment of the utility model, the diameter of the iron pin 5 is 100-150 mm; a handle is provided on the iron pin 5; and the length of the iron pin 5 is not less than the sum of the depth of the pipe segment hanging hole 6 and the width of the longitudinal steel section 1.

[0070] The iron pin 5 of the utility model has the following functions: first, after the anti-retraction device and the pipe segment hoisting hole 6 are inserted, the pipe segment thrust is transmitted to the longitudinal steel 1 and a reaction force is provided, and the iron pin 5 is a key force transmission component; second, the pipe segment is connected with the anti-retraction device to form a whole.

[0071] In the figure, the description of the positional relationship is only for illustrative purposes and cannot be understood as a limitation of this patent; obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not limitations on the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A convenient plug-in large diameter jacking pipe stop device, It is characterized in that It includes a supporting structure and longitudinal steel; the longitudinal steel is arranged outside the pipe section; The support structure includes a steel bracket; the upper end of the steel bracket is fixedly connected to the longitudinal steel, and the lower end is arranged on the bottom plate to achieve the supporting function of the convenient plug-in large-diameter jacking pipe stop device; The longitudinal steel section is provided with a longitudinal steel section reserved hole, which is matched with the pipe section hoisting hole provided on the pipe section, and the connection between the longitudinal steel section and the pipe section is achieved through an iron pin.

2. The convenient plug-in large diameter jacking pipe stop device as claimed in claim 1, It is characterized in that The support structure also includes transverse steel sections.

3. The convenient plug-in large diameter jacking pipe stop device as claimed in claim 2, It is characterized in that One end of the transverse steel is vertically arranged on the outside of the longitudinal steel and parallel to the horizontal plane; one end of the transverse steel away from the longitudinal steel is fixedly connected to the working pit enclosure structure; the transverse steel is fixedly connected to the longitudinal steel.

4. The convenient plug-in large diameter jacking pipe stop device as claimed in claim 1, It is characterized in that Channel steels are fixedly connected to both sides of the upper end of the steel support to increase the stability of the steel support.

5. The convenient plug-in large diameter jacking pipe stop device as claimed in claim 1, It is characterized in that A pin shaft and a reinforcing rib are also arranged on the inner side of the longitudinal steel section, and the pin shaft and the reinforcing rib are located at the longitudinal steel section reserved hole on the longitudinal steel section.

6. The convenient plug-in large diameter jacking pipe stop device as claimed in claim 2, It is characterized in that The longitudinal steel is in an I-shape; the transverse steel is in an H-shape.

7. The convenient plug-in large diameter jacking pipe stop device as claimed in claim 1, It is characterized in that The longitudinal steel reserved hole is cut and manufactured on the longitudinal steel, has a diameter of 100-200 mm, and is arranged in the middle of the longitudinal steel.

8. The convenient plug-in large diameter jacking pipe stop device as claimed in claim 1, It is characterized in that The pipe segment hoisting hole is welded in the steel bar skeleton of the pipe segment, is made integrally with the pipe segment, and is fixed inside the pipe segment.

9. The convenient plug-in large diameter jacking pipe stop device as claimed in claim 1, It is characterized in that The diameter of the iron pin is 100-150mm; a handle is provided on the iron pin; and the length of the iron pin is not less than the sum of the depth of the pipe segment hoisting hole and the width of the longitudinal steel section.

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