Socket separation device for large diameter pipe jacking

Abstract

The application provides a socket separation device for large-diameter pipe jacking, which comprises a front clamping system, a rear clamping system and a jack. The front clamping system comprises a front clamping vertical plate and a front clamping bottom plate. The bottom of the front clamping vertical plate is higher than the front clamping bottom plate, and a plurality of front clamping tooth plates are formed on the front clamping vertical plate. Adjacent two front clamping tooth plates define an open downward groove. The rear clamping system comprises a rear clamping vertical plate and a rear clamping bottom plate. One end of the rear clamping bottom plate extends downward to form a plurality of rear clamping tooth plates. The rear clamping tooth plates are detachably inserted into the groove to compensate for at least part of the opening of the groove, and the front clamping vertical plate and the rear clamping vertical plate are arranged oppositely. The jack is suspended above the rear clamping bottom plate and is used for connecting the front clamping vertical plate and the rear clamping vertical plate. The application solves the technical problem that the socket cannot be quickly separated and damaged during pipe jacking construction in the prior art.

Description

Technical Field

[0001] This invention relates to the field of municipal underground engineering technology, and in particular to a socket separation device for large-diameter pipe jacking. Background Technology

[0002] During pipe jacking construction, the following problems may arise: pipe withdrawal may be necessary due to geological or mechanical equipment issues or other unforeseen factors; such as: failure of pressure testing at the pipe section socket, damage or deformation of the pipe section, or substandard installation quality of the pipe section; the common point in handling these problems is that the socket of the pipe section needs to be separated.

[0003] Currently, there are no mature technologies or equipment in the industry. Most methods involve manually or using cranes to separate the pipe sections by shaking or pulling them, which can easily damage the socket of the pipe section and cause safety accidents due to oblique pulling of the cranes.

[0004] For example, JPCCP pipe (a new type of composite jacking pipe) has an outer diameter of 4800mm, a single section weight of 43t, a single section length of 3000mm, and a socket sealing width of less than 30mm. Its large size means that currently, there is no equipment in the industry capable of bearing the weight of two pipe sections and applying tensile force to them. Furthermore, because the inner and outer walls of JPCCP pipe are smooth, tensile force cannot be applied to them. Moreover, because JPCCP pipe uses prestressed steel cylinder concrete pipe production technology, stress points cannot be set on the pipe sections without damaging them. Additionally, because JPCCP pipe is located inside the working shaft, the working face restricts the use of large equipment, and due to the large initial jacking force, the socket of the JPCCP pipe is too tight to easily separate. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a socket separation device for large-diameter jacking pipes, which solves the technical problem in existing technologies where the socket of the jacking pipe cannot be quickly separated without being damaged during pipe retreat construction.

[0006] According to an embodiment of the present invention, a socket separation device for large-diameter jacking pipes includes:

[0007] A front card system includes a front card vertical plate and a front card bottom plate connected together. The bottom of the front card vertical plate protrudes below the front card bottom plate and forms a plurality of front card tooth plates. A downward-opening groove is defined between two adjacent front card tooth plates.

[0008] A rear-clamping system includes a connected rear-clamping vertical plate and a rear-clamping bottom plate. One end of the rear-clamping bottom plate extends downward to form a plurality of rear-clamping toothed plates. The rear-clamping toothed plates are detachably inserted into the groove to compensate for at least a partial opening of the groove and to ensure that the front-clamping vertical plate and the rear-clamping vertical plate are arranged opposite to each other.

[0009] A jack is suspended above the rear card base plate and is used to connect the front card vertical plate and the rear card vertical plate.

[0010] Preferably, the front card base plate and / or the rear card base plate are provided with contact surfaces, which are arc-shaped curved surfaces or flat surfaces, for tightly adhering to the inner and outer walls of the top pipe.

[0011] Preferably, the front card vertical plate and / or the rear card vertical plate are arc-shaped blocks or rectangular blocks, so as to be seamlessly connected with the corresponding front card bottom plate or the rear card bottom plate.

[0012] Preferably, the rear card bottom plate includes a first splicing part and a second splicing part that are detachably connected, the rear card tooth plate is formed in the first splicing part, and the rear card vertical plate is fixed to the second splicing part.

[0013] Preferably, the first splicing part is provided with a plurality of first splicing through holes at intervals along its length direction, and the second splicing part is provided with second splicing through holes. The first splicing part and the second splicing part are fitted together so that any one of the first splicing through holes and the second splicing through hole are connected, and the locking member passes through the first splicing through hole and the second splicing through hole in sequence to lock the first splicing part and the second splicing part.

[0014] Preferably, a plurality of ribs are provided between the front card vertical plate and the front card bottom plate and / or between the rear card vertical plate and the rear card bottom plate.

[0015] Preferably, the separation device further includes a support frame for supporting the front card vertical plate or the rear card vertical plate, the support frame comprising:

[0016] The upper support base has a clamping opening for fixing the front card vertical plate or the rear card vertical plate;

[0017] The lower support base, and the lower support base are disposed opposite to each other; and

[0018] A connecting rod connects the upper support base and the lower support base. The connecting rod is provided with a connector for rotating with the upper support base.

[0019] Preferably, the connector is provided with a first fixing through hole and a second fixing through hole, the upper support is provided with an adjustment through hole adapted to the first fixing through hole and an arc-shaped adjustment groove adapted to the second fixing through hole, the first fastening bolt passes through the adjustment through hole and the first fixing through hole in sequence, and the second fastening bolt passes through the arc-shaped adjustment groove and the second fixing through hole in sequence to fix the upper support to the connector.

[0020] The arc-shaped adjustment groove is arranged along the rotation direction of the upper support.

[0021] Preferably, the upper support base has two support blocks that move relative to each other, the clamping opening is formed between the two support blocks, and one of the support blocks is fixed to the upper support base, while the other support block is locked to the upper support base by screws.

[0022] Preferably, the connecting rod has a telescopic section for adjusting the length of the connecting rod.

[0023] Compared with existing technologies, this invention has the following advantages: During installation, the front clamping base plate is placed on one side of the socket, and the front clamping tooth plate is placed inside the socket seam of the jacking pipe. Then, the rear clamping base plate is placed on the other side of the socket, and the rear clamping tooth plate is placed inside the socket seam of the jacking pipe through the corresponding groove. Finally, a jack is installed to connect the front clamping vertical plate and the rear clamping vertical plate. The socket is separated by applying jacking force. This device can bring the front and rear clamping systems into the jacking pipe, using the socket of the jacking pipe as the force point of the front and rear clamping tooth plates. The socket of the jacking pipe is separated by the action of the jacking jacks on the front and rear clamping vertical plates. The structure is simple, easy to operate, low in cost, occupies little space, has high construction efficiency, low safety hazards, and does not require the cooperation of large equipment. At the same time, by utilizing the cooperation of the front and rear clamping tooth plates, the socket can be separated without damage, avoiding irreversible damage to the socket caused by the shaking and pulling of traditional large machinery. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the front and rear card system in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the front card system in one embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the rear card system in one embodiment of the present invention;

[0027] Figure 4 This is an exploded view of the rear card system in one embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the support frame in one embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the upper support base in one embodiment of the present invention.

[0030] In the picture:

[0031] 1. Front clamping vertical plate; 2. Front clamping bottom plate; 3. Front clamping toothed plate; 4. Groove; 5. Rear clamping vertical plate; 6. Rear clamping bottom plate; 601. First splicing part; 602. Second splicing part; 603. First splicing through hole; 604. Second splicing through hole; 7. Rear clamping toothed plate; 8. Jack; 9. Rib plate; 10. Upper support base; 11. Clamping port; 12. Connecting rod; 13. Connecting head; 14. First fastening bolt; 15. Second fastening bolt; 16. Arc-shaped adjustment groove; 17. Support block; 18. Lower support base. Detailed Implementation

[0032] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," etc., 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; 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 invention according to the specific circumstances.

[0033] The following will be combined with the appendix Figure 1-6 The present invention will be further described below.

[0034] In embodiments of the present invention, such as Figures 1-3 As shown, the socket separation device for the large-diameter jacking pipe includes a front clamping system, a rear clamping system, and a jack 8. The front clamping system includes a front clamping vertical plate 1 and a front clamping bottom plate 2 connected together. The bottom of the front clamping vertical plate 1 protrudes below the front clamping bottom plate 2 and forms a plurality of front clamping toothed plates 3. A downward-opening groove 4 is defined between two adjacent front clamping toothed plates 3. The rear clamping system includes a rear clamping vertical plate 5 and a rear clamping bottom plate 6 connected together. One end of the rear clamping bottom plate 6 extends downward to form a plurality of rear clamping toothed plates 7. The rear clamping toothed plates 7 are detachably inserted into the groove 4 to compensate for at least part of the opening of the groove 4 and to make the front clamping vertical plate 1 and the rear clamping vertical plate 5 arranged opposite each other. The jack 8 is suspended above the rear clamping bottom plate 6 and is used to connect the front clamping vertical plate 1 and the rear clamping vertical plate 5.

[0035] Specifically, in this embodiment of the invention, the front clamping system includes a front clamping vertical plate 1 and a front clamping bottom plate 2. The front clamping vertical plate 1 is arranged vertically, and the front clamping bottom plate 2 is arranged horizontally, with one end of the bottom plate 2 connected to the front clamping vertical plate 1 by double-sided welding. The front clamping bottom plate 2 is used to install on the inner wall of the jacking pipe and to support the front clamping vertical plate 1. Figure 2As shown, the bottom of the front card vertical plate 1 protrudes below the front card bottom plate 2, that is: the bottom of the front card vertical plate 1 extends downward beyond the front card bottom plate 2, and the extended part of the front card vertical plate 1 forms a plurality of front card tooth plates 3 arranged at intervals for insertion into the socket; in addition, a groove 4 is formed between two adjacent front card tooth plates 3, and the opening direction of the groove 4 is set downward.

[0036] In this embodiment of the invention, the rear clamping system includes a rear clamping vertical plate 5 and a rear clamping bottom plate 6. The rear clamping vertical plate 5 and the rear clamping bottom plate 6 are respectively arranged vertically and horizontally, and the rear clamping vertical plate 5 is located in the middle of the rear clamping bottom plate 6. When the rear clamping bottom plate 6 is placed on the inner wall of the jacking pipe, the rear clamping bottom plate 6 can support the rear clamping vertical plate 5; for example Figure 3 As shown, an integrally formed rear card tooth plate 7 is provided at one end of the rear card base plate 6. The number of rear card tooth plates 7 is the same as the number of grooves 4, and they are used for detachable insertion into the corresponding grooves 4. The thickness of the front card tooth plate 3 is equal to the thickness of the rear card tooth plate 7. When the rear card tooth plate 7 is inserted into the groove 4, it not only serves to connect the front and rear card systems, but also allows the groove 4 to avoid the rear card tooth plate 7, so that the rear card tooth plate 7 can be placed in the socket along with the front card tooth plate 3. Furthermore, the front and rear card systems are detachably connected to the rear card tooth plate 7 provided on the rear card base plate 6 through the groove 4 provided on the front card vertical plate 1. The two systems exist independently when not in use, which is convenient for transportation and storage. And during installation, it is also convenient for the front card tooth plate 3 and the rear card tooth plate 7 to be placed in the socket in sequence.

[0037] In this embodiment of the invention, the front clamping vertical plate 1 and the rear clamping vertical plate 5 are connected by a jack 8. The jack 8 is activated to separate the socket by linking the front clamping vertical plate 1 and the rear clamping vertical plate 5 with the corresponding front clamping tooth plate 3 and the rear clamping tooth plate 7.

[0038] This invention achieves rapid separation of the jacking pipe's socket by placing both the front locking plate 3 and the rear locking plate 7 at the socket of the jacking pipe, and then using a jack 8 to open the front locking plate 1 and the rear locking plate 5. During this process, the socket of the jacking pipe itself is used as the force-bearing point of this device, allowing the front locking plate 3 and the rear locking plate 7 to extend into it. Simultaneously, this device has a simple structure and small size, allowing it to be directly inserted into the jacking pipe for operation. The installed jack 8 can quickly separate the socket, making operation convenient and fast without the need for large equipment. Furthermore, directly separating the socket avoids the irreversible damage to the socket caused by traditional methods of large-scale mechanical shaking and forceful pulling, resulting in low safety risks.

[0039] like Figures 1-3As shown, in one embodiment, the front base plate 2 and the rear base plate 6 are provided with contact surfaces, which are arc-shaped curved surfaces used to tightly adhere to the inner and outer walls of the jacking pipe. Specifically, in order to install the front base plate 2 and the rear base plate 6 on the inner wall of the jacking pipe, so that the two fit tightly together to generate lateral tension in the jack 8, and to facilitate the insertion of the front toothed plate 3 and the rear toothed plate 7 into the socket, this embodiment provides a contact surface on both the front base plate 2 and the rear base plate 6. This contact surface is an arc-shaped curved surface used to adapt to the cylindrical inner wall of the jacking pipe; in actual operation, the curvature of the contact surface can be changed to suit pipes of different diameters.

[0040] Of course, in other embodiments, the contact surfaces of the front base plate 2 and the rear base plate 6 can be flat, for adapting to the square cross-section of the pipe section.

[0041] Preferably, the front clamping vertical plate 1 and the rear clamping vertical plate 5 are arc-shaped blocks to seamlessly connect with the corresponding front clamping bottom plate 2 or the rear clamping bottom plate 6. Specifically, since both the front clamping bottom plate 2 and the rear clamping bottom plate 6 in this embodiment are arc-shaped curved surface structures, in order to allow multiple front clamping tooth plates 3 and multiple rear clamping tooth plates 7 to extend into the socket and cooperate with each other, this embodiment sets both the front clamping vertical plate 1 and the rear clamping vertical plate 5 as arc-shaped blocks, with the bottom of the arc-shaped blocks aligned with the corresponding front clamping bottom plate 2 or the rear clamping bottom plate 6, so that they are seamlessly connected and can be installed close to the pipe wall. Alternatively, when the socket of the jacking pipe is exposed above the ground, the front clamping bottom plate 2 and the rear clamping bottom plate 6 are placed on the outer surface of the jacking pipe. In this case, the front clamping bottom plate 2 and the rear clamping bottom plate 6 need to be reversed in their arc direction, and the front clamping vertical plate 1 and the rear clamping vertical plate 5 need to be modified accordingly. No further restrictions are imposed here.

[0042] like Figure 4 As shown, in one embodiment, the rear clamping base plate 6 includes a detachably connected first splicing part 601 and a second splicing part 602. The rear clamping toothed plate 7 is formed in the first splicing part 601, and the rear clamping vertical plate 5 is fixed to the second splicing part 602. Specifically, in order to achieve greater jacking force to install different models of jacks 8, this embodiment divides the rear clamping base plate 6 into a detachably connected first splicing part 601 and a second splicing part 602. During installation, a suitable length of the first splicing part 601 and / or the second splicing part 602 is selected to change the overall length of the rear clamping base plate 6, thereby changing the distance between the front clamping vertical plate 1 and the rear clamping vertical plate 5 to accommodate different models of jacks 8. On the other hand, the number of the front clamping system and the rear clamping system can be increased or decreased according to actual needs to achieve greater jacking force.

[0043] Further, in one embodiment, the first splicing portion 601 is provided with a plurality of first splicing through holes 603 spaced apart along its length direction, and the second splicing portion 602 is provided with second splicing through holes 604. The first splicing portion 601 and the second splicing portion 602 are fitted together so that any one of the first splicing through holes 603 and the second splicing through hole 604 is connected, and the locking member passes through the first splicing through hole 603 and the second splicing through hole 604 in sequence to lock the first splicing portion 601 and the second splicing portion 602. Specifically, in order to change the overall length of the rear card base plate 6, such as Figure 4 As shown, multiple first splicing through holes 603 are spaced apart along the length of the first splicing part 601, and second splicing through holes 604 are provided on the second splicing part 602. Thus, when the first splicing part 601 and the second splicing part 602 are attached together, any one of the first splicing through holes 603 and the second splicing through hole 604 is connected and locked by a locking member, so that the first splicing part 601 and the second splicing part 602 are relatively fixed. When it is necessary to adjust the length of the rear base plate 6, the contact area of ​​the first splicing part 601 and the second splicing part 602 is changed so that different first splicing through holes 603 and second splicing through holes 604 are connected. Finally, the locking member locks and fixes the connection, so as to achieve the purpose of adjustable length of the rear base plate 6 to accommodate greater top force. The inner wall of the splicing through hole is provided with an internal thread structure, and the locking element is a screw. The screw passes through and is screwed into the splicing through hole to achieve relative fixation of the two splicing parts; loosening the screw can adjust the overall length of the first splicing part 601 and the second splicing part 602.

[0044] like Figures 1-4 As shown, in one embodiment, there are several ribs 9 between the front card vertical plate 1 and the front card bottom plate 2, and between the rear card vertical plate 5 and the rear card bottom plate 6. Specifically, in order to improve the strength of this separation device, this embodiment provides multiple spaced ribs 9 between the front card vertical plate 1 and the front card bottom plate 2, and between the rear card vertical plate 5 and the rear card bottom plate 6. These ribs 9 have a triangular structure and are welded to the corresponding vertical plate and bottom plate on both sides to improve the overall strength of the front card system or the rear card system and prevent deformation during operation.

[0045] like Figure 5 As shown, in one embodiment, the separation device further includes a support frame for supporting the front card vertical plate 1 or the rear card vertical plate 5. The support frame includes an upper support seat 10, a lower support seat 18, and a connecting rod 12. The upper support seat 10 has a clamping opening 11 for fixing the front card vertical plate 1 or the rear card vertical plate 5. The lower support seat 18 is arranged opposite to the upper support seat 10. The connecting rod 12 connects the upper support seat 10 and the lower support seat 18. The connecting rod 12 has a connector 13 for rotating with the upper support seat 10.

[0046] Specifically, to adapt this device to the side of the pipe section, i.e., to install the front clamping system and the rear clamping system on the inner wall side of the jacking pipe, a support frame is required. This support frame is connected to the front clamping vertical plate 1 or the rear clamping vertical plate 5 to support the front clamping system or the rear clamping system. Specifically, the support frame includes an upper support seat 10, a connecting rod 12, and a lower support seat 18 connected in sequence. The upper support seat 10 forms a clamping opening 11 for clamping or releasing the front clamping vertical plate 1 or the rear clamping vertical plate 5. (In actual operation, since the front clamping vertical plate 1 and the rear clamping vertical plate 5 are independent components, two support frames can be set to connect the front clamping vertical plate 1 and the rear clamping vertical plate 5 respectively. The two support frames can be connected by a telescopic structure, which is adapted to the jacking force applied by the jack 8; or A support frame is provided for clamping the front clamping vertical plate 1 or the rear clamping vertical plate 5. Under the action of the jack 8, one of the front clamping vertical plate 1 or the rear clamping vertical plate 5 can move relative to the other. The lower support seat 18 is used to abut against the pipe wall, and after forming friction with the pipe wall, it fixes the corresponding front clamping system or rear clamping system to the side of the pipe section. A connecting rod 12 is used to connect the upper support seat 10 and the lower support seat 18. To ensure that the front clamping vertical plate 1 or the rear clamping vertical plate 5 is installed on the corresponding side of the pipe section, a connector 13 is provided at the end of the connecting rod 12 near the upper support seat 10. This connector 13 can rotate with the upper support seat 10, so that the clamping opening 11 can clamp the corresponding vertical plate by rotating the upper support seat 10, and the lower support seat 18 can abut against the pipe wall. Of course, to adjust the angle of the lower support seat 18, a connector 13 is also provided at the end of the connecting rod 12 near the lower support seat 18, which can also rotate with the lower support seat 18.

[0047] like Figure 6 As shown, in one embodiment, the connector 13 is provided with a first fixing through hole and a second fixing through hole, the upper support 10 is provided with an adjustment through hole adapted to the first fixing through hole, and an arc-shaped adjustment groove 16 adapted to the second fixing through hole, the first fastening bolt 14 passes through the adjustment through hole and the first fixing through hole in sequence, and the second fastening bolt 15 passes through the arc-shaped adjustment groove 16 and the second fixing through hole in sequence to fix the upper support 10 to the connector 13;

[0048] The arc-shaped adjustment groove 16 is arranged along the rotation direction of the upper support 10.

[0049] Specifically, to achieve a rotatable connection between the upper support 10 and the connector 13, a first fixing hole is provided in the connector 13, and an adjustment through hole adapted to the first fixing hole is provided in the upper support 10. The first fixing hole and the adjustment through hole are locked by a first fastening bolt 14 to fix the upper support 10 and the connector 13 relatively. When the first fastening bolt 14 is loosened, the upper support 10 can rotate about the axis of the first fastening bolt 14. After rotating to a certain angle, the first fastening bolt 14 can be tightened. On the other hand, to improve the connection strength between the upper support 10 and the connector 13, a first fixing hole is provided in the connector 13. A second fixing hole is provided, spaced apart from the first fixing hole. An arc-shaped adjustment groove 16 is provided on the upper support 10, which communicates with the second fixing hole and is locked in place by a second fastening bolt 15. The arc-shaped adjustment groove 16 is arranged along the rotation direction of the upper support 10, so that the upper support 10 is fixed at a predetermined angle after rotation by the second fastening bolt. Of course, for ease of operation, the first fastening bolt 14 can also be a pin passing through the first fixing hole and the adjustment hole, in which case the rotation angle of the upper support 10 can be changed simply by loosening or tightening the second fastening bolt 15. Similarly, the above structure is also adapted to the connection of the lower support 18 to change the specific rotation angle of the lower support 18, which will not be described in detail here.

[0050] like Figure 6 As shown, in one embodiment, the upper support base 10 is provided with two relatively movable support blocks 17, and the clamping opening 11 is formed between the two support blocks 17. One of the support blocks 17 is fixed to the upper support base 10, and the other support block 17 is locked to the upper support base 10 by a screw. Specifically, in order to facilitate clamping or releasing the front clamping vertical plate 1 or the rear clamping vertical plate 5, two support blocks 17 arranged opposite to each other are provided on the upper support base 10. The two support blocks 17 move relative to each other, that is, one of the two support blocks 17 can slide relative to the other support block 17 to move closer to or away from the other support block 17, thereby changing the size of the clamping opening 11 formed between them, so as to achieve the purpose of quick clamping and release. On the other hand, in order to fix the two support blocks 17 relatively to fix the corresponding vertical plate in the clamping opening 11, a screw is threaded on the upper support block 17. The screw connects the movable support block 17 to control its movement state.

[0051] like Figure 5As shown, in one embodiment, the connecting rod 12 has a telescopic section for adjusting its length. Specifically, to enable the support frame to abut against the pipe wall, a telescopic section is provided in the middle of the connecting rod 12. The telescopic amount of this section is adjusted to change the overall length of the connecting rod 12, so that the upper support seat 10 is connected to the front clamping vertical plate 1 or the rear clamping vertical plate 5, and the lower support seat 18 abuts against the pipe wall. The telescopic section can be a sliding sleeve structure or a threaded pipe structure, or a spliced ​​structure can be used to add or remove the telescopic section.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A socket separation device for large-diameter jacking pipes, characterized in that, include: The front card system includes a front card vertical plate and a front card bottom plate connected together, the bottom of the front card vertical plate protruding from the front card. Below the base plate, multiple front retaining plates are formed, and a downward-opening groove is defined between two adjacent front retaining plates; The rear card system includes a connected rear card vertical plate and a rear card bottom plate, one end of the rear card bottom plate extending downward to form a... A rear retaining plate, which is detachably inserted into the groove to compensate for at least a partial opening of the groove. And the front card vertical plate and the rear card vertical plate are arranged opposite to each other; The front and rear base plates are provided with contact surfaces, which are arc-shaped curved surfaces or flat surfaces, for tightly adhering to the inner and outer walls of the top pipe; Several ribs are provided between the front card vertical plate and the front card bottom plate, and between the rear card vertical plate and the rear card bottom plate; and A jack is suspended above the rear card base plate and is used to connect the front card vertical plate and the rear card vertical plate. The separation device further includes a support frame for supporting the front card vertical plate or the rear card vertical plate. The support frame includes an upper support base with a clamping opening for fixing the front card vertical plate or the rear card vertical plate. The lower support base, and the lower support base are disposed opposite to each other; and A connecting rod connects the upper support base and the lower support base. The connecting rod is provided with a connector for rotating with the upper support base.

2. The socket separation device for large-diameter jacking pipes according to claim 1, characterized in that, The front card vertical plate and / or the rear card vertical plate are arc-shaped or rectangular blocks, so as to be seamlessly connected with the corresponding front card bottom plate or rear card bottom plate.

3. The socket separation device for large-diameter jacking pipes according to claim 2, characterized in that, The rear card base plate includes a first splicing part and a second splicing part that are detachably connected. The rear card tooth plate is formed in the first splicing part, and the rear card vertical plate is fixed to the second splicing part.

4. The socket separation device for large-diameter jacking pipes according to claim 3, characterized in that, The first splicing part is provided with a plurality of first splicing through holes at intervals along its length direction, and the second splicing part is provided with second splicing through holes. The first splicing part and the second splicing part are fitted together so that any one of the first splicing through holes and the second splicing through hole are connected, and the locking member passes through the first splicing through hole and the second splicing through hole in sequence to lock the first splicing part and the second splicing part.

5. The socket separation device for large-diameter jacking pipes according to claim 1, characterized in that, The connector is provided with a first fixing through hole and a second fixing through hole. The upper support is provided with an adjustment through hole adapted to the first fixing through hole and an arc-shaped adjustment groove adapted to the second fixing through hole. The first fastening bolt passes through the adjustment through hole and the first fixing through hole in sequence, and the second fastening bolt passes through the arc-shaped adjustment groove and the second fixing through hole in sequence to fix the upper support to the connector. The arc-shaped adjustment groove is arranged along the rotation direction of the upper support.

6. The socket separation device for large-diameter jacking pipes according to claim 5, characterized in that, The upper support base is provided with two support blocks that move relative to each other. The clamping opening is formed between the two support blocks, and one of the support blocks is fixed to the upper support base, while the other support block is locked to the upper support base by screws.

7. The socket separation device for large-diameter jacking pipes according to any one of claims 1-6, characterized in that, The connecting rod has a telescopic section for adjusting its length.

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