A detachable temporary support device for repairing pipe jacking cutterheads

Abstract

This utility model provides a detachable temporary support device for repairing pipe jacking cutterheads. The device includes: a detachable inner circular support frame; a detachable support cylinder, which is detachably fitted around the outer periphery of the detachable inner circular support frame to provide support; and an insulation board, which is detachably mounted on the outer wall of the detachable support cylinder along its circumference. This utility model provides support and fixation for the surrounding soil through the detachable inner circular support frame and the externally fitted detachable support cylinder. The external insulation board provides insulation for the surrounding soil, and the combined buffering effect of the detachable support cylinder and the insulation board effectively withstands soil pressure, ensuring the safety of the repair operation. Furthermore, both the detachable inner circular support frame and the detachable support cylinder are detachable structures, making installation and disassembly convenient and quick, greatly improving construction efficiency. They can be disassembled and reused multiple times, reducing construction costs.

Description

Technical Field

[0001] This utility model relates to the field of underground engineering construction equipment maintenance technology, and more specifically, to a detachable temporary support device for repairing pipe jacking cutterheads. Background Technology

[0002] During pipe jacking construction, the cutterhead, as a key component, is prone to wear, cracks, and other malfunctions due to complex geological conditions and long-term operation, requiring repair work.

[0003] However, when repairing the cutterhead, it is necessary to effectively support the surrounding soil to prevent collapse. Most existing support structures are fixed, which have problems such as inconvenient installation and disassembly, low construction efficiency, and poor versatility, making it difficult to meet the needs of rapid repair of pipe jacking cutterheads. Summary of the Invention

[0004] In view of this, the present invention proposes a detachable temporary support device for repairing pipe jacking cutterheads, which aims to solve the problem of inconvenient installation and disassembly of existing fixed support structures, resulting in low speed of pipe jacking cutterhead repair.

[0005] This utility model proposes a detachable temporary support device for repairing a pipe jacking cutterhead. The device includes: a detachable inner circular support frame; a detachable support cylinder, which is detachably fitted around the outer periphery of the detachable inner circular support frame to provide support; and an insulation board, which is detachably mounted on the outer wall of the detachable support cylinder along its circumference.

[0006] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, the detachable inner circular support frame includes: a detachable circular support frame; and a cross-shaped support frame disposed inside the detachable circular support frame, wherein the cross-shaped support frame and the detachable circular support frame are detachably connected.

[0007] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, the detachable circular support frame includes: a plurality of arc-shaped support bars; wherein, the plurality of arc-shaped support bars are arranged opposite to each other and surround to form a circular support frame, and the connecting ends of any two adjacent arc-shaped support bars are detachably connected.

[0008] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, the arc-shaped support bar is an arc-shaped structure formed by bending an I-beam structure. Both connecting ends of the arc-shaped support bar are provided with auxiliary connecting plates, and the auxiliary connecting plates provided at the connecting ends of two adjacent arc-shaped support bars are detachably connected.

[0009] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, the cross-shaped support frame includes: two first radial frames and two second radial frames; wherein, the two first radial frames are arranged in a straight line along the radial direction of the detachable circular support frame, and the two first radial frames are detachably connected to each other; the two second radial frames are arranged on both sides of the first radial frame in a direction perpendicular to the first radial frame, and the ends of the two second radial frames are detachably connected to the two sides of the first radial frame respectively, forming a cross structure.

[0010] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, one end of each of the two first radial frames is provided with a first radial connecting plate, and the two first radial connecting plates on the two first radial frames are in abutting contact and detachably connected to each other; one end of each of the two second radial frames is provided with a second radial connecting plate, and the connection point of the two first radial frames is detachably connected to both sides with a third radial connecting plate, and the second radial connecting plate and the third radial connecting plate are in abutting contact and detachably connected to each other.

[0011] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, both the first radial frame and the second radial frame are I-beam structures.

[0012] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, the end of the cross-shaped support frame is provided with a first frame connecting plate, and the inner wall of the detachable circular support frame is detachably connected to a second frame connecting plate, which is detachably connected to the first frame connecting plate.

[0013] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, the detachable support cylinder includes: a plurality of arc-shaped support plates; wherein, the plurality of arc-shaped support plates are arranged sequentially along the outer periphery of the detachable inner circular support frame to form a circular support cylinder.

[0014] Furthermore, in the aforementioned detachable temporary support device for repairing the jacking cutterhead, the widths of the detachable support cylinder and the insulation board are both greater than the width of the detachable inner circular support frame.

[0015] This utility model provides a detachable temporary support device for repairing pipe jacking cutterheads. It uses a detachable inner circular support frame and an externally fitted detachable support cylinder for support and fixation, enabling support of the surrounding soil. An external insulation board provides insulation for the surrounding soil. Combined with the buffering effect of the detachable support cylinder and insulation board, it effectively withstands soil pressure, ensuring the safety of the repair operation. Furthermore, both the detachable inner circular support frame and the detachable support cylinder are detachable structures, allowing for convenient and quick installation and disassembly, greatly improving construction efficiency. It can be disassembled and reused multiple times, reducing construction costs and conforming to the concept of green construction. This solves the problem of inconvenient installation and disassembly of existing fixed support structures, which hinders the rapid repair of pipe jacking cutterheads. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0017] Figure 1 A cross-sectional view of a detachable temporary support device for repairing a jacking cutterhead provided in an embodiment of this utility model;

[0018] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0019] Figure 3 for Figure 1 Sectional view at point BB;

[0020] Figure 4 for Figure 3 Sectional view at CC;

[0021] Figure 5 for Figure 3 A magnified view of a section at point D;

[0022] Figure 6 for Figure 3 A magnified view of a section at point E in the middle;

[0023] Figure 7 for Figure 3 A magnified view of a section at point F in the middle;

[0024] Figure 8 for Figure 7 G-direction view;

[0025] Figure 9 This is a schematic diagram of the structure of the arc-shaped support strip provided in an embodiment of the present utility model;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Disassembled inner circular support frame, 11-Disassembled circular support frame, 111-Arc-shaped support bar, 112-Auxiliary connecting plate, 12-Cross-shaped support frame, 121-First radial frame, 122-Second radial frame, 123-First radial connecting plate, 124-Second radial connecting plate, 125-Third radial connecting plate, 13-First frame connecting plate, 14-Second frame connecting plate, 2-Disassembled support cylinder, 3-Insulation board, 4-Jack pipe cutterhead, 5-Jack pipe front shell plate, 6-Excavation profile surface, 7-Reinforcing support rod. Detailed Implementation

[0028] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] See Figures 1 to 8 This is a structural schematic diagram of a detachable temporary support device for repairing a jacking cutterhead provided in an embodiment of this utility model. As shown in the figure, the support device includes: a detachable inner circular support frame 1, a detachable support cylinder 2, and an insulation board 3; wherein,

[0030] The detachable support cylinder 2 is detachably fitted onto the outer circumference of the detachable inner circular support frame, serving a supporting function. Specifically, there can be multiple detachable inner circular support frames 1, providing multi-segment internal support to support the front side of the jacking cutterhead 4 to be repaired (e.g., Figure 1The internal support of the cylindrical space at the soil excavation site (shown on the left) is as follows: A detachable support cylinder 2 is fitted around the outer periphery of the detachable inner circular support frame, allowing for pressure contact between the two. The detachable support cylinder 2 provides inner wall support for the soil surrounding the cylindrical space. In this embodiment, the detachable support cylinder 2 has a multi-segment structure, particularly divided into multiple segments along the excavation direction, and is correspondingly arranged one-to-one with the detachable inner circular support frame 1. Both the detachable support cylinder 2 and the detachable inner circular support frame 1 are detachable structures, allowing easily disassembled small modules to pass through the openings in the front shell plate 5 of the jacking pipe and be placed inside the soil excavation space (i.e., the chamber) in front of the jacking pipe cutterhead 4 for assembly. The jacking pipe cutterhead 4 is rotatably mounted on the front shell plate 5 of the jacking pipe. To improve the stability of the detachable inner circular support frame 1, preferably, a reinforcing support rod 7 can be provided between the detachable inner circular support frame 1 and the front shell plate 5 of the jacking pipe, and the reinforcing support rod 7 can be aligned along the axial direction of the excavated space (e.g., along the soil excavation space). Figure 1 The structure is arranged horizontally as shown, with both ends detachably connected to the detachable inner circular support frame 1 on the right and the front shell plate 5 of the jacking pipe, respectively. Multiple reinforcing support rods 7 are arranged circumferentially near the outer edge of the detachable inner circular support frame 1 to improve its stability.

[0031] The insulation board 3 is detachably mounted on the outer wall of the detachable support cylinder 2 along its circumference. Specifically, both the detachable support cylinder 2 and the insulation board 3 are multi-segment structures, especially divided into multiple segments along the excavation direction, and are arranged in a one-to-one correspondence with the detachable inner circular support frame 1. The insulation board 3 can be fitted onto the outer wall of the detachable support cylinder 2 to insulate the surrounding soil. In this embodiment, the insulation board 3 and the detachable support cylinder 2 can also be cylindrical structures with one open end, adapted to and attached to the inner wall of the soil excavation space in front of the cutterhead 4, i.e., the excavation contour surface 6. The insulation board 3 can be installed first, followed by the detachable support cylinder 2 and the detachable inner circular support frame 1, to achieve soil support. In this embodiment, the width of the detachable inner circular support frame 1 is slightly narrow, while the width of the detachable support cylinder 2 and the insulation board 3, which are arranged one-to-one, is wider. In order to provide support stability for the detachable support cylinder 2 and the insulation board 3, preferably, the detachable inner circular support frame 1 is set in the middle position in the width direction of the detachable support cylinder 2 to avoid tilting of the detachable support cylinder 2 and ensure the stability of the detachable support cylinder 2.

[0032] See also Figure 3The detachable inner circular support frame 1 includes a detachable circular support frame 11 and a cross-shaped support frame 12; wherein the cross-shaped support frame 12 is disposed inside the detachable circular support frame, and the cross-shaped support frame 12 is detachably connected to the detachable circular support frame 11.

[0033] Specifically, the detachable circular support frame can be a circular frame structure, especially a ring structure, which can provide internal support for the entire circumference of the detachable support cylinder 2. The cross-shaped support frame 12 can be installed inside the detachable circular support frame to reinforce its inner circumference and prevent deformation or damage under external pressure. The cross-shaped support frame 12 can also be a star-shaped support frame, a grid-shaped support frame, or other internal support frames; this embodiment does not impose any limitations on it. In this embodiment, the detachable circular support frame 11 and the cross-shaped support frame 12 are detachably connected, and both the detachable circular support frame 11 and the cross-shaped support frame 12 are detachable structures that can be passed through openings in the front shell plate 5 of the jacking pipe for assembly within the excavation space.

[0034] See also Figure 3 , Figure 7 and Figure 8The cross-shaped support frame 12 has a first frame connecting plate 13 at its end. A second frame connecting plate 14 is detachably connected to the inner wall of the detachable circular support frame 11, and is detachably connected to the first frame connecting plate 13. Specifically, there can be four first frame connecting plates 13, respectively located at the four ends of the cross-shaped support frame 12. Each first frame connecting plate 13 is arranged perpendicular to the end of the cross-shaped support frame 12. There are also four second frame connecting plates 14, each corresponding to one of the first frame connecting plates 13. These can be located at four different positions on the inner wall of the detachable circular support frame 11, particularly at the intersection of two perpendicular radial connecting lines and the detachable circular support frame 11. Each second frame connecting plate 14 is arranged perpendicular to the radial direction of the detachable circular support frame 11. During installation, the four first frame connecting plates 13 press against the inner sides of the four second frame connecting plates 14, and are detachably connected to their respective second frame connecting plates 14 via bolts. Of course, the cross-shaped support frame 12 is a split structure. The assembly of the detachable circular support frame 11, the assembly of the cross-shaped support frame 12, and the connecting components between the two are not sequential. Both the first frame connecting plate 13 and the second frame connecting plate 14 can be made of steel plate, and bolt holes can be provided at all four corners for connection and fixation. In this embodiment, the second frame connecting plate 14 can be connected to the connection point between two adjacent modules of the detachable circular support frame 11, increasing the connection stability. The second frame connecting plate 14 and the detachable circular support frame 11 can also be detached and connected via bolts. The first frame connecting plate 13 can be fixedly installed at the end of the cross-shaped support frame 12 by welding, or it can be fixed by other connection methods; this embodiment does not impose any limitations.

[0035] See also Figure 3 , Figure 5 and Figure 7 , Figure 9 The detachable circular support frame 11 includes: a plurality of arc-shaped support bars 111; wherein, the plurality of arc-shaped support bars 111 are arranged opposite to each other and surround to form a circular support frame, and the connecting ends of any two adjacent arc-shaped support bars 111 are detachably connected.

[0036] Specifically, the sum of the arcs of the plurality of arc-shaped support bars 111 is 360°. The plurality of arc-shaped support bars 111 are arranged opposite each other, forming a circular support frame. The connecting ends of any two adjacent arc-shaped support bars 111 are detachably connected. To facilitate the connection between the arc-shaped support bars 111, preferably, each connecting end of the arc-shaped support bar 111 can be provided with an auxiliary connecting plate 112. The auxiliary connecting plate 112 can be arranged radially along the arc-shaped support bar 111 and can be fixedly installed at the end of the arc-shaped support bar 111 by welding. The auxiliary connecting plates 112 at the connecting ends of two adjacent arc-shaped support bars 111 are in abutting contact and can be detachably connected by bolts. Bolt holes can be provided at the four corners of the auxiliary connecting plate 112 to facilitate bolt installation and fixing. The arc-shaped support bar 111 can be an arc-shaped structure formed by bending an I-beam, such as an 18# I-beam. Figure 4 As shown, the arc-shaped support bar 111 has an I-shaped cross-section and is supported by its upper flange plate for detachable support cylinder 2. In this embodiment, there are eight arc-shaped support bars 111, each with an arc of 45°, forming a 360° circular support frame. The second frame connecting plate 14 is bolted to the inner flange plate of the arc-shaped support bar 111.

[0037] See also Figure 3 , Figure 6 The cross-shaped support frame 12 includes two first radial frames 121 and two second radial frames 122. The two first radial frames 121 are arranged in a straight line along the radial direction of the detachable circular support frame 11, and the two first radial frames 121 are detachably connected to each other. The two second radial frames 122 are arranged on both sides of the first radial frames 121 in a direction perpendicular to the first radial frames 121, and the ends of the two second radial frames 122 are detachably connected to the two sides of the first radial frames 121, forming a cross structure.

[0038] Specifically, two first radial frames 121 can be arranged radially up and down along the vertical direction of the detachable circular support frame 11, and two second radial frames 122 can be arranged radially on the left and right sides of the two first radial frames 121 along the horizontal direction of the detachable circular support frame 11, forming a cross-shaped arrangement and detachably connected. One end of the two first radial frames 121 (e.g. Figure 6The bottom end of the upper first radial frame 121 and the top end of the lower first radial frame 121 shown are each provided with a first radial connecting plate 123. The two first radial connecting plates 123 on the two first radial frames 121 are in abutting contact with each other and can be detachably connected by bolts. The first radial connecting plate 123 can be arranged perpendicularly to one end of the first radial frame 121 and can be fixed by welding. The other end of the first radial frame 121 can be welded with a first frame connecting plate 13. One end of the two second radial frames 122 (e.g., Figure 6 The right end of the left second radial frame 122 and the left end of the right second radial frame 122 shown are both provided with second radial connecting plates 124. The second radial connecting plates 124 can be arranged perpendicular to one end of the second radial frame 122 and can be fixed by welding. The other end of the second radial frame 122 can be welded with a first frame connecting plate 13. The connection between the two first radial frames 121 is that a third radial connecting plate 125 can be detachably connected to both sides of the first radial frame 121. The third radial connecting plate 125 can be detachably connected to the two first radial frames 121 by bolts. The second radial connecting plate 124 and the third radial connecting plate 125 are in abutting contact and can be detachably connected by bolts. Bolt holes can be provided at the four corners of the first radial connecting plate 123, the second radial connecting plate 124, and the third radial connecting plate 125 to facilitate bolt installation. In this embodiment, both the first radial frame 121 and the second radial frame 122 can be I-beam structures, and the third radial connecting plate 125 is fixed to the flange plate of the second radial frame 122 by bolts.

[0039] In this embodiment, the detachable support cylinder 2 includes several arc-shaped support plates. These arc-shaped support plates are arranged sequentially along the outer periphery of the detachable inner circular support frame 1, forming a circular support cylinder. Specifically, the sum of the arc angles of the arc-shaped support plates is 360°. The arc-shaped support plates are arranged opposite each other, forming a circular support frame. The arc-shaped support plates can be arc-shaped steel plate structures. In this embodiment, there are eight arc-shaped support plates, each with a cross-sectional arc angle of 45°, combined to form a 360° detachable support cylinder 2.

[0040] In this embodiment, the detachable support cylinder 2 can be made of wood backing, which can protect the insulation board 3. Since the insulation board 3 is usually relatively soft and easily damaged by external forces, the wood backing provides physical protection, preventing damage from collisions, scratches, or other external forces during construction or use, thus ensuring the insulation performance and service life of the insulation board 3. Simultaneously, it enhances structural stability. Because the wood backing has a certain rigidity and strength, it can enhance the stability of the entire structure to a certain extent. The wood backing can share the load from above with the detachable circular support frame 11, and distribute the load more evenly to the cross-shaped support frame 12 below, preventing the insulation board 3 from deforming or being damaged due to excessive local pressure. Furthermore, the wood backing facilitates construction and installation. Especially during construction, the wood backing can serve as a relatively flat and sturdy base layer, facilitating the installation and fixing of the insulation board 3 and other subsequent materials. For example, the insulation board 3 can be installed more easily on the wood backing by nailing or gluing, which is simpler than installing the insulation board 3 directly on the I-beam. The wooden back panel also provides sound insulation and cushioning. Since wood itself has a certain sound insulation property, the wooden back panel can buffer the transmission of sound to a certain extent, reduce the impact of external noise on the internal space, and at the same time reduce the transmission of internal sound outward, thus playing a certain role in sound insulation and noise reduction for the space on both sides of the insulation layer.

[0041] In this embodiment, when the cutterhead 4 needs repair, a construction space is first cleared around the cutterhead. The arc-shaped support bars 111 are assembled into a top, bottom, and side support system via auxiliary connecting plates 112, forming a detachable three-dimensional frame structure. By adjusting the position of the supports and connecting bolts, the support structure is made to fit tightly with the cutterhead outline and the surrounding soil. The cushioning effect of the wooden frame and insulation board 3 is used to evenly transmit soil pressure. After the repair work is completed, the connecting parts and supports are disassembled in reverse order to achieve rapid disassembly and reuse of the support structure.

[0042] In summary, the detachable temporary support device for repairing the pipe jacking cutterhead 4 provided in this embodiment is supported and fixed by a detachable inner circular support frame 1 and an externally fitted detachable support cylinder 2, which can support the surrounding soil and insulate the surrounding soil through an external insulation board 3. Combined with the buffering effect of the detachable support cylinder 2 and the insulation board 3, it can effectively withstand soil pressure and ensure the safety of repair operations. At the same time, both the detachable inner circular support frame 1 and the detachable support cylinder 2 are detachable structures, which are convenient and quick to install and disassemble, greatly improving construction efficiency. They can be disassembled and used multiple times, reducing construction costs and conforming to the concept of green construction. This solves the problem of inconvenient installation and disassembly of existing fixed support structures, which leads to low speed of repair of the pipe jacking cutterhead 4.

[0043] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0044] Furthermore, it should be noted that, in the description of this utility model, 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A detachable temporary support device for repairing a pipe jacking cutterhead, characterized in that, include: Detachable inner circular support frame; The detachable support cylinder is detachably fitted onto the outer periphery of the detachable inner circular support frame to provide support. An insulation board is detachably mounted on the outer wall of the detachable support cylinder along its circumference.

2. The detachable temporary support device for repairing the jacking cutterhead according to claim 1, characterized in that, The detachable inner ring circular support frame includes: Demountable circular support frame; A cross-shaped support frame is disposed inside the detachable circular support frame, and the cross-shaped support frame is detachably connected to the detachable circular support frame.

3. The detachable temporary support device for repairing the pipe jacking cutterhead according to claim 2, characterized in that, The detachable circular support frame includes: a plurality of arc-shaped support bars; wherein... Multiple arc-shaped support bars are arranged opposite each other and surround to form a circular support frame, and the connecting ends of any two adjacent arc-shaped support bars are detachably connected.

4. The detachable temporary support device for repairing the pipe jacking cutterhead according to claim 3, characterized in that, The arc-shaped support bar is an arc-shaped structure formed by bending an I-beam. Both ends of the arc-shaped support bar are provided with auxiliary connecting plates, and the auxiliary connecting plates provided at the connecting ends of two adjacent arc-shaped support bars are detachably connected.

5. The detachable temporary support device for repairing the jacking cutterhead according to claim 2, characterized in that, The cross-shaped support frame includes: two first radial frames and two second radial frames; wherein... The two first radial frames are arranged in a straight line along the radial direction of the detachable circular support frame, and the two first radial frames are detachably connected to each other; Two second radial frames are arranged on both sides of the first radial frame in a direction perpendicular to the first radial frame, and the ends of the two second radial frames are detachably connected to the two sides of the first radial frame to form a cross structure.

6. The detachable temporary support device for repairing the pipe jacking cutterhead according to claim 5, characterized in that, Each of the two first radial frames has a first radial connecting plate at one end, and the two first radial connecting plates on the two first radial frames are in abutting contact with each other and are detachably connected. Each of the two second radial frames has a second radial connecting plate at one end, and the connection between the two first radial frames is detachably connected to a third radial connecting plate on both sides. The second radial connecting plate and the third radial connecting plate are in abutting contact and are detachably connected.

7. The detachable temporary support device for repairing the pipe jacking cutterhead according to claim 5, characterized in that, Both the first radial frame and the second radial frame are I-beam structures.

8. The detachable temporary support device for repairing the pipe jacking cutterhead according to claim 2, characterized in that, The end of the cross-shaped support frame is provided with a first frame connecting plate, and the inner wall of the detachable circular support frame is detachably connected to a second frame connecting plate, which is detachably connected to the first frame connecting plate.

9. The detachable temporary support device for repairing the pipe jacking cutterhead according to any one of claims 1 to 8, characterized in that, The detachable support cylinder includes: several arc-shaped support plates; wherein... Multiple arc-shaped support plates are arranged sequentially along the outer periphery of the detachable inner circular support frame to form a circular support cylinder.

10. The detachable temporary support device for repairing the pipe jacking cutterhead according to any one of claims 1 to 8, characterized in that, The widths of the detachable support cylinder and the insulation board are both greater than the width of the detachable inner circular support frame.

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