A pipe jacking device that is easy to assemble and disassemble

Abstract

This utility model belongs to the technical field of pipe jacking construction equipment, and specifically relates to a pipe jacking device that is easy to assemble and disassemble. The pipe jacking device has multiple first fastening blocks and multiple second fastening blocks respectively installed on the pipe jacking machine head and pipe sections, with each block corresponding to the previous one. Annular U-bolts are fitted onto the corresponding first and second fastening blocks and tightened, thus locking the first and second fastening blocks and achieving a tight connection between the pipe jacking machine head and the pipe section. This allows for rapid assembly of the pipe jacking device and prevents the pipe jacking machine head from tipping over during use due to a loose connection. When disassembling the device, the U-bolts are loosened and removed from the corresponding first and second fastening blocks, making the assembly and disassembly of the pipe jacking machine more convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipe jacking construction equipment, and specifically relates to a pipe jacking device that is easy to assemble and disassemble. Background Technology

[0002] With the continuous acceleration of urbanization and the concentration of urban population, urban traffic pressure has increased sharply, necessitating the construction of subways to alleviate traffic pressure. However, the construction of subways requires the excavation of tunnels.

[0003] Cut-and-cover and tunneling are two main methods commonly used in underground engineering (tunnel) construction. Cut-and-cover can have a severe impact on nearby residents and the local environment, while tunneling has a relatively smaller impact on nearby residents and the local environment. Therefore, tunneling has gradually become the mainstream method, and the pipe jacking method in tunneling is increasingly being used in actual projects.

[0004] During pipe jacking construction, when the pipe jacking machine needs to stop operating due to malfunction or maintenance, or when the pipe jacking machine is about to complete the jacking process and exit the tunnel, the machine head may fall over due to loose connections between pipe sections (pipe jacking machine head fall).

[0005] To prevent the pipe jacking machine head from tipping over, tying devices and bolt devices (locking structures with screws and nuts) are typically used to fix the pipe jacking machine head to several subsequent pipe sections, completing the assembly of the pipe jacking machine and preventing it from tipping over. However, the locking methods of tying devices and bolt devices are too cumbersome, and multiple tying devices and bolt devices need to be installed between the pipe jacking machine head and the pipe sections, making the installation and disassembly of tying devices and bolt devices inefficient and causing great inconvenience to the assembly and disassembly of the pipe jacking machine. Utility Model Content

[0006] This utility model provides a pipe jacking device that is easy to assemble and disassemble, in order to solve the technical problem that the connection and disassembly efficiency between the pipe jacking machine head and the pipe section in the prior art is low, which leads to the extreme inconvenience of assembling and disassembling the pipe jacking machine.

[0007] This utility model is achieved through the following technical solution:

[0008] A pipe jacking device that is easy to assemble and disassemble includes a pipe jacking machine head and pipe sections;

[0009] The jacking end of the pipe jacking machine head is provided with a trough extending along the forward direction of the pipe jacking machine head. Multiple first fastening blocks are provided on the trough wall, and the multiple first fastening blocks are arranged around the circumference of the trough and close to the opening of the trough.

[0010] The pipe section is a tubular structure with openings at both ends. The shape of the pipe section matches the shape of the pipe jacking machine head, and the cross-sectional shape of the inner cavity of the pipe section matches the cross-sectional shape of the settling trench. The side wall of the inner cavity is provided with a number of second fastening blocks equal to the number of first fastening blocks. The second fastening blocks are arranged close to one end of the pipe section, and the positions of all the second fastening blocks correspond one-to-one with the positions of the multiple first fastening blocks. The second fastening blocks and the first fastening blocks are locked together by annular U-bolts to achieve a tight connection between the pipe section and the pipe jacking machine head.

[0011] To better realize this utility model, the above structure is further optimized by adding a U-shaped clamping plate to the pipe jacking device;

[0012] The settling tank is provided with a plurality of first clamping blocks on its tank wall, and the plurality of first clamping blocks are arranged around the circumference of the settling tank and close to the opening of the settling tank.

[0013] The inner cavity is provided with a second clamping block at the position corresponding to the first clamping block, and the second clamping block is arranged close to the end of the pipe section where the second fastening block is provided.

[0014] When the pipe section is tightly connected to the head of the pipe jacking machine, the first clamping block and the second clamping block are pressed together, and the opening of the U-shaped clamping plate faces the first clamping block and the second clamping block and is sleeved on the first clamping block and the second clamping block to achieve a tight fit between the first clamping block and the second clamping block.

[0015] To better realize this utility model, further optimization is made to the above structure. The sink is provided with a first pressing component at the position corresponding to the first pressing block. The pressing end of the first pressing component can extend towards the position close to the first pressing block and apply pressure.

[0016] The inner cavity is provided with a second pressing component corresponding to the position of the second pressing block. The squeezing end of the second pressing component can extend to the position close to the second pressing block and apply pressure. The second pressing component cooperates with the first pressing component to squeeze the part of the U-shaped plate located between the second pressing component and the second pressing block, and the part between the first pressing component and the first pressing block, respectively.

[0017] To better realize this utility model, the above structure is further optimized, and the number of pipe sections is multiple;

[0018] The inner cavity has a number of third fastening blocks equal to the number of second fastening blocks on its side wall. The third fastening blocks are arranged close to the end of the pipe section away from the second fastening blocks, and the positions of all the third fastening blocks correspond one-to-one with the positions of all the second fastening blocks.

[0019] In two adjacent pipe sections, the third fastening block of one pipe section is locked to the second fastening block of the other pipe section by a ring-shaped U-bolt, so as to achieve a tight connection between the two adjacent pipe sections.

[0020] To better realize this utility model, further optimization is made to the above structure. Multiple second clamping blocks and multiple third clamping blocks are provided on the side wall of the inner cavity. The multiple second clamping blocks and multiple third clamping blocks are respectively arranged close to both ends of the pipe section. The multiple second clamping blocks are arranged around the circumference of the inner cavity. The positions of the multiple third clamping blocks correspond one-to-one with the positions of the multiple second clamping blocks.

[0021] When two adjacent pipe sections are tightly connected, the second clamping block of one pipe section is pressed against the third clamping block of the other pipe section, and the opening of the U-shaped clamping plate faces the third clamping block and the second clamping block, and is sleeved on the third clamping block and the second clamping block to achieve a tight fit between the third clamping block and the second clamping block.

[0022] To better realize this utility model, the above structure is further optimized. A third pressing component is provided in the inner cavity corresponding to the position of the third fastening block. The pressing end of the third pressing component can extend to the position close to the third pressing block and apply pressure. The third pressing component cooperates with the second pressing component to press the part of the U-shaped plate between the third pressing component and the third pressing block, and the part between the second pressing component and the second pressing block, respectively.

[0023] To better realize this utility model, further optimizations are made to the above structure. The sinking trough is provided with a foot pedal at the position corresponding to the bottom of the pipe jacking machine head and the inner cavity is provided at the position corresponding to the bottom of the pipe section. The first fastening block or the second fastening block is located below the foot pedal.

[0024] Compared with the prior art, this utility model has the following advantages:

[0025] In the pipe jacking device provided by this utility model, multiple first fastening blocks and multiple second fastening blocks are respectively provided on the pipe jacking machine head and the pipe section, and the positions of the multiple first fastening blocks and multiple second fastening blocks correspond one-to-one. When assembling the pipe jacking device, the annular U-bolts are directly sleeved on the corresponding first fastening blocks and second fastening blocks, and the U-bolts are tightened. The U-bolts are used to lock the first fastening blocks and second fastening blocks, realizing a tight connection between the pipe jacking machine head and the pipe section. This can prevent the pipe jacking machine head from falling over during use due to a loose connection between the pipe jacking machine head and the pipe section. When disassembling the pipe jacking device, the U-bolts are loosened and removed from the corresponding first fastening blocks and second fastening blocks. Compared with the tie devices and bolt devices in the prior art, the disassembly and assembly method of the U-bolts with the first fastening blocks and second fastening blocks is simpler, making the assembly and disassembly of the pipe jacking machine more convenient, and ensuring the tightness of the connection between the pipe jacking machine head and the pipe section. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a structural schematic diagram of a pipe jacking device that is easy to assemble and disassemble according to the present invention.

[0028] Figure 2 yes Figure 1 A magnified view of part A in the middle.

[0029] Figure 3 This is a transverse sectional view of a pipe jacking device that is easy to assemble and disassemble according to this utility model.

[0030] Figure 4 This is a rear view of a pipe jacking device that is easy to assemble and disassemble according to this utility model.

[0031] Figure 5 This is a schematic diagram of the structure of a U-bolt in a pipe jacking device that is easy to assemble and disassemble according to this utility model.

[0032] Figure 6 This is a schematic diagram of the U-shaped clamping plate in a pipe jacking device that is easy to assemble and disassemble according to this utility model.

[0033] Figure 7 This is a cross-sectional view of a pipe section in a pipe jacking device that is easy to assemble and disassemble according to this utility model.

[0034] Figure 8 This is a schematic diagram of the structure of a pipe jacking device that is easy to assemble and disassemble, in which the head of the pipe jacking machine connects multiple pipe sections.

[0035] In the picture:

[0036] 1. Pipe jacking machine head; 11. Settling trench; 12. First fastening block; 13. First clamping block; 14. First clamping assembly;

[0037] 2. Pipe section; 21. Second fastening block; 22. Second clamping block; 23. Second clamping assembly; 24. Third fastening block; 25. Third clamping block; 26. Third clamping assembly;

[0038] 3. U-bolts;

[0039] 4. U-shaped pallet;

[0040] 5. Press the pedal. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In the embodiments of this application, such as Figures 1 to 8 As shown, the pipe jacking device includes a pipe jacking machine head 1 and a pipe section 2; wherein,

[0045] The jacking end of the pipe jacking machine head 1 is provided with a sinking trough 11 extending along the forward direction of the pipe jacking machine head 1. Multiple first fastening blocks 12 are provided on the wall of the sinking trough 11. The multiple first fastening blocks 12 are arranged around the circumference of the sinking trough 11 and close to the opening of the sinking trough 11.

[0046] The pipe section 2 is a tubular structure with open ends. The shape of the pipe section 2 matches the shape of the pipe jacking machine head 1. The cross-sectional shape of the inner cavity of the pipe section 2 matches the cross-sectional shape of the settling tank 11. The side wall of the inner cavity is provided with a number of second fastening blocks 21 equal to the number of first fastening blocks 12. The second fastening blocks 21 are arranged close to one end of the pipe section 2, and the positions of all the second fastening blocks 21 correspond one-to-one with the positions of the multiple first fastening blocks 12. The second fastening blocks 21 and the first fastening blocks 12 are locked together by U-bolts 3 to achieve a tight connection between the pipe section 2 and the pipe jacking machine head 1.

[0047] During the construction of underground engineering (tunnel), workers can use a hoisting device to hoist the pipe jacking machine head 1 to the construction position, and use the jacking part of the hydraulic jack to push the jacking end of the pipe jacking machine head 1, pressing the cutter head end of the pipe jacking machine head 1 into the soil layer.

[0048] Subsequently, the hydraulic jack's pushing part is retracted, and the pipe section 2 is hoisted between the pipe jacking machine head 1 and the hydraulic jack's pushing part using the hoisting device. The position of the pipe section 2 is adjusted so that the end of the pipe section 2 is aligned with the pushing end of the pipe jacking machine head 1. At this time, the workers can enter the inner cavity of the pipe section 2 through the opening at the end of the pipe section 2 away from the pipe jacking machine head 1, and put the annular U-bolt 3 on the corresponding second fastening block 21 and first fastening block 12. Tighten the U-bolt 3, and use the U-bolt 3 to lock the second fastening block 21 and the first fastening block 12, so as to achieve a tight connection between the pipe jacking machine head 1 and the pipe section 2.

[0049] Then, the workers can exit the inner cavity of pipe section 2 and continue to use the jacking part of the hydraulic jack to push pipe section 2, and push the pipe jacking machine head 1 forward through pipe section 2 to complete the pipe jacking work.

[0050] Compared with existing locking devices such as tie-down devices and bolt devices, the U-bolt 3 mentioned in this embodiment is simpler and more convenient to install and disassemble, making the assembly and disassembly of the pipe jacking device more convenient. It can also ensure the tightness of the connection between the pipe jacking machine head 1 and the pipe section 2, avoiding the need to stop operation due to malfunctions or maintenance, and preventing the pipe jacking machine head 1 from falling over when the pipe jacking device is about to complete the jacking into and out of the hole.

[0051] It should be noted that U-bolt 3 includes a U-shaped connecting rod and a locking bolt; see [link / reference] Figure 5 ,

[0052] The connecting rod has through holes near both ends, with the axes of the two through holes coinciding. The connecting end (not the nut end) of the locking bolt is inserted through the two through holes and connected to the nut to form a ring structure. This ring structure is easy to fit onto the corresponding second fastening block 21 and first fastening block 12. By tightening the nut and locking bolt, the connecting rod is locked to clamp the corresponding second fastening block 21 and first fastening block 12, thus achieving a tight connection between the pipe jacking machine head 1 and the pipe section 2.

[0053] Preferably, the first fastening block 12 and the second fastening block 21 are provided with slots on opposite sides. When the U-bolt 3 is sleeved on the corresponding second fastening block 21 and first fastening block 12, it can be inserted into the slots to prevent the U-bolt 3 from coming off the second fastening block 21 and first fastening block 12, so as to make the connection between the pipe jacking machine head 1 and the pipe section 2 tighter.

[0054] In some embodiments, the pipe jacking device further includes a U-shaped clamping plate 4, see [link to documentation]. Figures 1 to 3 ;in,

[0055] Multiple first clamping blocks 13 are provided on the wall of the settling tank 11. The multiple first clamping blocks 13 are arranged around the circumference of the settling tank 11 and close to the opening of the settling tank 11.

[0056] A second clamping block 22 is provided in the inner cavity at the position corresponding to the first clamping block 13. The second clamping block 22 is arranged close to the end of the pipe section 2 where the second fastening block 21 is provided.

[0057] When pipe section 2 is tightly connected to the pipe jacking machine head 1, the first clamping block 13 and the second clamping block 22 are pressed together, and the opening of the U-shaped clamping plate 4 faces the first clamping block 13 and the second clamping block 22 and is fitted onto the first clamping block 13 and the second clamping block 22, so as to achieve a tight fit between the first clamping block 13 and the second clamping block 22, thereby further improving the tightness of the connection between the pipe jacking machine head 1 and the pipe section 2.

[0058] It should be noted that the cross-sectional shape of the U-shaped card plate 4 is "U" shaped, see [reference]. Figure 6 During installation, the worker can align the opening of the device with the first clamping block 13 and the second clamping block 22, and then fit it onto the first clamping block 13 and the second clamping block 22, so that the first clamping block 13 and the second clamping block 22 are located inside the U-shaped clamping plate 4. The first clamping block 13 and the second clamping block 22 are clamped together by the two parallel sides of the U-shaped clamping plate 4, so that the first clamping block 13 and the second clamping block 22 are tightly fitted together.

[0059] In this embodiment, the cross-sectional shapes of the pipe jacking machine head 1 and pipe section 2 are both rectangular, and the shapes of the settling tank 11 and the inner cavity are also rectangular. See [link to documentation]. Figure 1 and Figure 4 ;

[0060] The aforementioned first fastening blocks 12 are divided into four groups, and the four groups of first fastening blocks 12 are located on the four sides of the rectangular sink 11. The number of the aforementioned first pressing blocks 13 is four, and the four first pressing blocks 13 are located at the four apex corners of the rectangular sink 11.

[0061] The aforementioned multiple second fastening blocks 21 are also divided into four groups. The positions of the four groups of second fastening blocks 21 correspond one-to-one with the positions of the four groups of first fastening blocks 12. There are four second clamping blocks 22. The positions of the four second clamping blocks 22 correspond one-to-one with the four first clamping blocks 13. They are used in conjunction with U-bolts 3 and U-shaped clamping plates 4 to achieve a tight connection between the jacking machine head 1 and the pipe section 2 at multiple positions.

[0062] In some embodiments, the sink 11 is provided with a first pressing component 14 at the position corresponding to the first pressing block 13, and the pressing end of the first pressing component 14 can extend toward the position close to the first pressing block 13 and apply pressure.

[0063] A second pressing component 23 is provided in the inner cavity at the position corresponding to the second pressing block 22. The pressing end of the second pressing component 23 can extend towards the position close to the second pressing block 22 and apply pressure. The second pressing component 23 cooperates with the first pressing component 14 to press the part of the U-shaped plate 4 located between the second pressing component 23 and the second pressing block 22, and the part between the first pressing component 14 and the first pressing block 13, thereby fixing the U-shaped plate 4.

[0064] In this embodiment, both the first clamping component 14 and the second clamping component 23 are hydraulic cylinders. The piston end of the hydraulic cylinder can press the two parallel sides of the U-shaped clamping plate 4 (the part of the U-shaped clamping plate 4 between the second clamping component 23 and the second clamping block 22, and the part between the first clamping component 14 and the first clamping block 13) against the first clamping block 13 and the second clamping block 22 respectively, so as to prevent the U-shaped clamping plate 4 from coming off the first clamping block 13 and the second clamping block 22, so as to make the connection between the pipe jacking machine head 1 and the pipe section 2 tighter.

[0065] Preferably, a hydraulic pump station is provided in the inner cavity, and the oil inlet and oil outlet of the hydraulic pump station are respectively connected to the oil outlet and oil inlet of the hydraulic cylinder to control the extension and retraction of the hydraulic cylinder.

[0066] In some embodiments, the number of pipe sections 2 is multiple, and the arrangement of multiple pipe sections 2 can increase the jacking depth of the pipe jacking device. See [link to documentation]. Figure 8 ;

[0067] To ensure the stability of the connection between multiple pipe sections 2, a third fastening block 24 is provided on the side wall of the inner cavity of the pipe section 2, with the same number as the second fastening block 21. The third fastening block 24 is arranged close to the end of the pipe section 2 away from the second fastening block 21, and the position of all the third fastening blocks 24 corresponds one-to-one with the position of all the second fastening blocks 21.

[0068] In two adjacent pipe sections 2, the third fastening block 24 of one pipe section 2 is locked to the second fastening block 21 of the other pipe section 2 by U-bolts 3, so as to achieve a tight connection between the two adjacent pipe sections 2. This setting method makes the structure and model of all accessories uniform, and there is no order requirement for multiple pipe sections 2, which makes installation more convenient.

[0069] In some embodiments, a plurality of third clamping blocks 25 are provided on the sidewall of the inner cavity, see [reference]. Figure 7The positions of all the third clamping blocks 25 correspond one-to-one with the positions of all the second clamping blocks 22. When two adjacent pipe sections 2 are tightly connected, the second clamping block 22 of one pipe section 2 is pressed against the third clamping block 25 of the other pipe section 2. The opening of the U-shaped clamping plate 4 faces the third clamping block 25 and the second clamping block 22 and is sleeved on the third clamping block 25 and the second clamping block 22 to achieve a tight fit between the third clamping block 25 and the second clamping block 22, so as to further improve the tightness of the connection between the two adjacent pipe sections 2.

[0070] In some embodiments, a third clamping component 26 is provided in the inner cavity at the position corresponding to the third fastening block 24. See Figure 8 The pressing end of the third pressing component 26 can extend to a position close to the third fastening block 24 and apply pressure. The third pressing component 26 cooperates with the second pressing component 23 to press the portion of the U-shaped clamping plate 4 located between the third pressing component 26 and the third pressing block 25, and the portion between the second pressing component 23 and the second pressing block 22, respectively, thereby fixing the U-shaped clamping plate 4.

[0071] It is worth noting that the second pressing component 23 and the third pressing component 26 are both disposed between the second pressing block 22 and the third pressing block 25, and the non-pressing end of the second pressing component 23 and the non-pressing end of the third pressing component 26 abut against each other. The pressing end of the second pressing component 23 and the pressing end of the third pressing component 26 extend or retract toward or away from the positions of the second pressing block 22 and the third pressing block 25, respectively, so as to achieve the function of pressing against the U-shaped clamping plate 4.

[0072] In some embodiments, the aforementioned settling trough 11 is provided with foot pedals 5 at the position corresponding to the bottom of the pipe jacking machine head 1 and the position corresponding to the bottom of the pipe section 2 within the inner cavity. See [link to documentation]. Figure 4 Stepping on the pedal 5 covers the first fastening block 12, the second fastening block 21, and the third fastening block 24, making it easier for staff and vehicles (handcarts, tool carts, and other small vehicles) to walk in the inner cavity and groove.

[0073] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A pipe jacking device that is easy to assemble and disassemble, characterized in that: Includes the pipe jacking machine head (1) and pipe section (2); The jacking end of the pipe jacking machine head (1) is provided with a sinking trough (11) extending along the forward direction of the pipe jacking machine head (1). Multiple first fastening blocks (12) are provided on the wall of the sinking trough (11). The multiple first fastening blocks (12) are arranged around the circumference of the sinking trough (11) and close to the opening of the sinking trough (11). The pipe section (2) is a tubular structure with open ends. The shape of the pipe section (2) matches the shape of the pipe jacking machine head (1). The cross-sectional shape of the inner cavity of the pipe section (2) matches the cross-sectional shape of the sinkhole (11). The inner cavity sidewall is provided with a number of second fastening blocks (21) equal to the number of first fastening blocks (12). The second fastening blocks (21) are arranged close to one end of the pipe section (2), and the positions of all the second fastening blocks (21) correspond one-to-one with the positions of multiple first fastening blocks (12). The second fastening blocks (21) and the first fastening blocks (12) are locked together by ring-shaped U-bolts (3) to achieve a tight connection between the pipe section (2) and the pipe jacking machine head (1).

2. The pipe jacking device according to claim 1, characterized in that: It also includes U-shaped cardboard (4); The sinking trough (11) is provided with a plurality of first pressing blocks (13) on its wall. The plurality of first pressing blocks (13) are arranged around the circumference of the sinking trough (11) and close to the opening of the sinking trough (11). The inner cavity is provided with a second clamping block (22) at the position corresponding to the first clamping block (13), and the second clamping block (22) is arranged close to the end of the pipe section (2) where the second fastening block (21) is provided; When the pipe section (2) is tightly connected to the jacking machine head (1), the first clamping block (13) and the second clamping block (22) are pressed together, the opening of the U-shaped clamping plate (4) faces the first clamping block (13) and the second clamping block (22), and is fitted on the first clamping block (13) and the second clamping block (22) to achieve a tight fit between the first clamping block (13) and the second clamping block (22).

3. The pipe jacking device according to claim 2, characterized in that: The sink (11) is provided with a first pressing component (14) at the position corresponding to the first pressing block (13). The pressing end of the first pressing component (14) can extend to a position close to the first pressing block (13) and apply pressure. The inner cavity is provided with a second pressing component (23) corresponding to the position of the second pressing block (22). The pressing end of the second pressing component (23) can extend to the position close to the second pressing block (22) and apply pressure. The second pressing component (23) cooperates with the first pressing component (14) to press the part of the U-shaped plate (4) located between the second pressing component (23) and the second pressing block (22), and the part between the first pressing component (14) and the first pressing block (13), respectively.

4. The pipe jacking device according to claim 1, characterized in that: The number of pipe sections (2) is multiple; The inner cavity is provided with a third fastening block (24) equal in number to the second fastening block (21) on its side wall. The third fastening block (24) is arranged close to the end of the pipe section (2) away from the second fastening block (21), and the position of all the third fastening blocks (24) corresponds one-to-one with the position of all the second fastening blocks (21). In two adjacent pipe sections (2), the third fastening block (24) of one pipe section (2) is locked with the second fastening block (21) of the other pipe section (2) by a ring-shaped U-bolt (3) to achieve a tight connection between the two adjacent pipe sections (2).

5. The pipe jacking device according to claim 4, characterized in that: The inner cavity is provided with a plurality of second clamping blocks (22) and a plurality of third clamping blocks (25) on its side wall. The plurality of second clamping blocks (22) and the plurality of third clamping blocks (25) are respectively arranged close to the two ends of the pipe section (2). The plurality of second clamping blocks (22) are arranged around the circumference of the inner cavity. The positions of the plurality of third clamping blocks (25) correspond one-to-one with those of the plurality of second clamping blocks (22). When two adjacent pipe sections (2) are tightly connected, the second clamping block (22) of one pipe section (2) is pressed against the third clamping block (25) of the other pipe section (2), the opening of the U-shaped clamping plate (4) faces the third clamping block (25) and the second clamping block (22), and is sleeved on the third clamping block (25) and the second clamping block (22) to achieve a tight fit between the third clamping block (25) and the second clamping block (22).

6. The pipe jacking device according to claim 5, characterized in that: The inner cavity is provided with a third pressing component (26) at the position corresponding to the third fastening block (24). The pressing end of the third pressing component (26) can extend to the position close to the third pressing block (25) and apply pressure. The third pressing component (26) cooperates with the second pressing component (23) to press the part of the U-shaped plate (4) located between the third pressing component (26) and the third pressing block (25), and the part between the second pressing component (23) and the second pressing block (22), respectively.

7. The pipe jacking device according to any one of claims 1 to 6, characterized in that: The sinker (11) is provided with a foot pedal (5) at the position corresponding to the bottom of the pipe jacking machine head (1) and the inner cavity is provided with a foot pedal (5) at the position corresponding to the bottom of the pipe section (2). The first fastening block (12) or the second fastening block (21) is located below the foot pedal (5).

Images