A liaison channel jacking pipe mold

Abstract

The application discloses a liaison channel top pipe mold, which comprises a base, a bottom mold, a top mold, an inner side mold, an outer side mold and two end molds, the bottom mold, the top mold, the inner side mold, the outer side mold and the two end molds are mutually spliced to form a forming cavity for forming a pipe piece; the outer side mold comprises two symmetrically arranged outer mold bodies, and a pouring opening is formed between the two outer mold bodies; the base is rotatably arranged on the bottom mold; after mold closing, the bottom mold is rotated upwards by 90 DEG, so that the bottom mold and the top mold are both placed on the base, and the pouring opening faces upwards; before demolding, the bottom mold is rotated downwards by 90 DEG, so that the bottom mold is placed on the ground, and the top mold faces upwards. The liaison channel top pipe mold occupies a small space, is convenient for pouring and demolding, and does not affect the sealing performance of the pipe piece splicing position.

Description

Technical Field

[0001] This application relates to the field of pipe jacking mold technology, specifically a pipe jacking mold for a connecting passage. Background Technology

[0002] Currently, tunnel construction support methods are mainly divided into shield tunneling and pipe jacking. Shield tunneling typically uses five precast concrete segments assembled to form the support structure, while pipe jacking uses precast single concrete pipe sections sequentially spliced ​​together to form the support structure.

[0003] However, the existing pipe jacking molds still have the following defects: (1) Since the concrete pipe sections constructed by the pipe jacking method are circular structures, the pipe jacking mold is a complete ring structure. The overall size of the mold is large, making it difficult to demold the pipe sections and occupying a large space, which is not conducive to on-site construction; (2) The pipe sections must be cast using vertical molds during the precasting and casting process. The casting operation opening is small, and the construction progress is slow. Moreover, the overall control of the flatness of the water collection surface of the pipe segments is not ideal, which can easily affect the sealing of the pipe section splice. Gas on the concrete surface in some places cannot escape effectively. After the pipe segments are demolded, special personnel need to be assigned to repair the deficient positions. The construction cycle is long and the cost is high.

[0004] Therefore, how to improve the existing pipe jacking mold to overcome the above-mentioned shortcomings is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] One objective of this application is to provide a jacking mold for a connecting channel that occupies little space, is easy to cast and demold, and does not affect the sealing of the segment joints.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a pipe jacking mold for a connecting channel, comprising a base, a bottom mold, a top mold, an inner mold, an outer mold, and two end molds. The bottom mold, the top mold, the inner mold, the outer mold, and the two end molds are spliced ​​together to form a forming cavity for forming pipe segments. The outer mold comprises two symmetrically arranged outer mold bodies, and a pouring port is formed between the two outer mold bodies. The base is rotatably disposed on the bottom mold. After the mold is closed, the bottom mold is rotated upward by 90°, so that both the bottom mold and the top mold fall on the base, and the pouring port faces upward. Before demolding, the bottom mold is rotated downward by 90°, so that the bottom mold falls on the ground, and the top mold faces upward.

[0007] Preferably, the outer formwork comprises at least two outer modules; when pouring concrete, each outer module is sequentially assembled from bottom to top, thereby achieving segmented pouring of the tunnel segment. Its advantage is that if the outer formwork is a single integral structure, concrete can only enter through the pouring port between the two outer formworks, and the entering concrete requires a considerable amount of time to reach the end formwork position. This inevitably increases the concrete pouring time. Furthermore, prolonged vibration is required to fully compact the concrete near the end formwork position. However, when the outer formwork comprises at least two outer modules, the outer modules can be assembled sequentially from bottom to top during concrete pouring. That is, the lowest outer module (the one closest to the end formwork) is assembled first, and then the corresponding section of that module is poured directly. After that section is poured, the next outer module is assembled, and pouring is repeated. This process continues until all outer modules are assembled before a final pour. In other words, by configuring the outer formwork as multiple outer modules, segmented pouring of the tunnel segment is achieved, significantly reducing concrete pouring time and shortening concrete vibration time.

[0008] Preferably, adjacent outer modules are rotatably connected. The advantage is that when adjacent outer modules are rotatably connected, during concrete pouring, the lowest outer module is completely joined, and the remaining outer modules are rotated to the outside of the molding cavity to avoid interference with the concrete pouring. After one pour is completed, the next outer module can be directly rotated to the molding cavity position and joined, while the remaining upper outer modules can still be rotated to the outside of the molding cavity. In other words, this rotatable connection method eliminates the need for splicing and fixing between adjacent outer modules; furthermore, it ensures the integrity of the outer mold body (i.e., although the outer mold body includes at least two outer modules, each outer module is rotatably connected sequentially), thereby preventing incorrect assembly order of the outer modules.

[0009] Preferably, the connecting channel jacking mold further includes an elastic element disposed between two adjacent outer modules. The elastic element is used to force the outer module closer to the pouring port to rotate away from the forming cavity. Its advantage is that, under the action of the elastic element, the outer module closer to the pouring port can be forced to rotate away from the forming cavity. That is, the elastic element forces the outer module that is not yet fully assembled to automatically rotate away from the forming cavity, thus avoiding rotation of the unassembled outer module due to vibration; otherwise, once the outer module rotates due to vibration, it can easily affect the pouring of concrete.

[0010] Preferably, the connecting channel jacking mold further includes a stop member, which is disposed between two adjacent outer modules. When the elastic member forces the outer module near the pouring port to move away from the molding cavity, the stop member restricts the outer module from continuing to rotate. The advantage is that without the stop member, when the elastic member forces the outer module near the pouring port to move away from the molding cavity, the weight of the incompletely assembled outer module is entirely on the elastic member, causing it to bear a large load for a long time, thus easily shortening its service life. However, with the stop member, when the elastic member forces the outer module near the pouring port to move away from the molding cavity, the stop member can restrict the outer module from continuing to rotate, thereby preventing the entire weight of the outer module from being placed on the elastic member, which helps to extend the service life of the elastic member.

[0011] Preferably, the stop component includes a fixed frame, a stop bar, and a connecting arm; the fixed frame is disposed on the outer module near the end mold side, and the stop bar is horizontally disposed on the fixed frame; the connecting arm is disposed on the outer module near the pouring port side, and when the outer module rotates away from the molding cavity until the connecting arm contacts the stop bar, the rotation of the outer module is restricted. Its advantage is that when the outer module rotates away from the molding cavity, the connecting arm on the outer module also rotates until it contacts the corresponding stop bar, at which point the stop bar restricts the rotation of the outer module.

[0012] Preferably, the fixing frame is provided with a mounting hole, and the stop bar is detachably disposed in the mounting hole; the connecting arm is horizontally provided with a insertion hole for fitting the stop bar, and the movement trajectory of the insertion hole as the connecting arm rotates passes through the axis of the mounting hole. Its advantage is that when the stop bar is first inserted into the mounting hole, when the connecting arm rotates to contact the stop bar, the rotation of the corresponding outer module can be restricted. When the outer module is first rotated until the insertion hole on the connecting arm of the outer module is aligned with the mounting hole, and then the stop bar is sequentially inserted into the insertion hole and the mounting hole, the two adjacent outer modules can be locked.

[0013] Preferably, the jacking mold for the connecting passage further includes an attached vibrator, which is disposed on the inner mold and / or the outer mold. Its advantages are: compared to manually operated insert vibrators, this attached vibrator requires no manual operation. Furthermore, when the attached vibrator is disposed on the inner mold, it does not increase the space occupied by the mold.

[0014] Preferably, when the central angle of the tube segment is less than or equal to 180°, the inner mold is slidably mounted on the bottom mold. The advantage is that when the central angle of the tube segment is less than or equal to 180°, by directly mounting the inner mold slidably on the bottom mold, both mold closing and demolding only require sliding the inner mold up or down, thus eliminating the need to completely remove the inner mold and improving the efficiency of mold closing and demolding.

[0015] Preferably, when the central angle of the tube segment is greater than 180°, the inner mold includes an upper mold body and two lower mold bodies; the upper mold body is slidably disposed on the bottom mold, and the two lower mold bodies are slidably disposed on the bottom mold. The advantage is that when the central angle of the tube segment is greater than 180°, if the inner mold is a single integral structure, the tube segment will restrict the vertical sliding of the inner mold. However, when the inner mold includes an upper mold body and two lower mold bodies, during demolding, when the two lower mold bodies slide towards each other in the left-right direction, the upper mold body can slide downwards, thus completing demolding. Similarly, during mold closing, the upper mold body first slides upwards, and then the two lower mold bodies slide away from each other in the left-right direction, thus completing mold closing.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] (1) Since the jacking mold of the connecting channel also includes the base, and the base is rotatably connected to the bottom mold, after the mold is closed, the bottom mold is rotated upward by 90° so that the bottom mold and the top mold fall on the base at the same time. That is, the base supports the bottom mold and the top mold and makes the pouring port face upward. At this time, concrete can be poured into the pouring port from top to bottom, that is, the vertical pouring of the pipe segment is realized, which facilitates the pouring of concrete (i.e. the pipe segment). After the pouring is completed, the concrete at the pouring port is smoothed and finished. That is, the water-receiving surface of the concrete is located on the outer ring surface of the formed pipe segment. After construction, the water-receiving surface is located on the outside of the pipe segment, that is, not at the splice between two adjacent pipe segments. In other words, even if the flatness of the water-receiving surface of the pipe segment is not ideal, it will not affect the sealing of the pipe segment splice.

[0018] (2) Before demolding, rotate the bottom mold downwards by 90° so that the bottom mold falls on the ground and the top mold faces upwards. At this time, the top mold is located above the bottom mold, and the inner mold, the outer mold and the two end molds are located around it. This makes it easy to disassemble the top mold, the inner mold, the outer mold and the two end molds, and thus makes it easy to lift the formed tube segment by lifting equipment to achieve horizontal demolding. The demolding operation is simpler and traditional lifting equipment can be used directly, so there is no need to design specific lifting equipment.

[0019] (3) Compared with the traditional method of directly casting annular segments, this method of casting the segments can effectively reduce the volume of the mold, thereby reducing the space occupied by the mold and making it easier to carry out construction on site. Attached Figure Description

[0020] Figure 1 A perspective view of a connecting passage jacking mold (front view) provided for this application.

[0021] Figure 2 Provided for this application Figure 1 A three-dimensional view of the jacking mold (back view) for the central connecting tunnel.

[0022] Figure 3 Provided for this application Figure 1 A schematic diagram showing the transformation of the jacking mold for the central connecting channel from a vertical to a horizontal state.

[0023] Figure 4 Provided for this application Figure 1 Exploded view of part of the jacking mold for the central connecting tunnel.

[0024] Figure 5 Provided for this application Figure 4 A magnified view of a section at point I.

[0025] Figure 6 An exploded view of a portion of the structure in body 4 provided in this application.

[0026] Figure 7 Provided for this application Figure 6 Enlarged view of the Chinese and foreign phantoms.

[0027] Figure 8 Provided for this application Figure 7 A magnified view of section II in the middle.

[0028] Figure 9 Provided for this application Figure 8 Front view of each structure.

[0029] Figure 10 Provided for this application Figure 9Another state diagram of each structure.

[0030] Figure 11 Provided for this application Figure 10 Another state diagram of each structure.

[0031] Figure 12 Provided for this application Figure 6 Enlarged view of the inner mold.

[0032] Figure 13 Provided for this application Figure 12 Another perspective view of the inner side mold.

[0033] Figure 14 Provided for this application Figure 13 A magnified view of section III in the middle.

[0034] Figure 15 Provided for this application Figure 6 Enlarged view of the midsole mold.

[0035] Figure 16 Provided for this application Figure 15 A magnified view of section IV in the middle.

[0036] Figure 17 Provided for this application Figure 4 The front view of the top mold state is omitted.

[0037] In the diagram: 1. Bottom mold; 2. Top mold; 3. Inner mold; 31. Upper mold body; 32. Lower mold body; 4. Outer mold; 41. Outer mold body; 411. Outer module; 5. End mold; 6. Base; 7. Elastic component; 8. Stop component; 81. Fixing frame; 811. Mounting hole; 82. Stop bar; 83. Connecting arm; 831. Insertion hole; 9. Attached vibrator; 100. Pouring port; 200. Rotating arm; 300. Rotating shaft; 400. Slide rail; 500. Screw drive mechanism; 600. Roller. Detailed Implementation

[0038] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0039] In the description of this application, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this application 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. They should not be construed as limiting the specific scope of protection of this application. The terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "comprising" and "having," and any variations thereof, in the specification and claims of this application, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0040] Reference Figures 1 to 3 One embodiment of this application provides a jacking mold for a connecting channel, including a base 6, a bottom mold 1, a top mold 2, an inner mold 3, an outer mold 4, and two end molds 5. The bottom mold 1, top mold 2, inner mold 3, outer mold 4, and two end molds 5 are spliced ​​together to form a molding cavity for forming pipe segments. The outer mold 4 includes two symmetrically arranged outer mold bodies 41, and a pouring port 100 is formed between the two outer mold bodies 41. The base 6 is rotatably disposed on the bottom mold 1. After the mold is closed, the bottom mold 1 is rotated upward by 90°, so that both the bottom mold 1 and the top mold 2 fall on the base 6, and the pouring port 100 faces upward. Before demolding, the bottom mold 1 is rotated downward by 90°, so that the bottom mold 1 falls on the ground, and the top mold 2 faces upward. It should be noted that this application does not limit the rotatable connection method between the base 6 and the bottom mold 1, for example, a rotatable connection can be achieved by hinge.

[0041] The working principle of this connecting channel jacking mold is as follows: Since the connecting channel jacking mold also includes a base 6, which is rotatably connected to the bottom mold 1, after the mold is closed, the bottom mold 1 is first rotated upwards by 90°, so that the bottom mold 1 and the top mold 2 simultaneously fall on the base 6. That is, the base 6 supports the bottom mold 1 and the top mold 2, and makes the pouring port 100 face upwards. At this time, if... Figure 1 and Figure 2As shown, concrete can be poured into the pouring opening 100 from top to bottom, thus achieving vertical pouring of the tunnel segments and facilitating the pouring of concrete (i.e., tunnel segments). After pouring, the concrete at the pouring opening 100 is smoothed and finished, meaning the water-receiving surface of the concrete is located on the outer ring surface of the formed tunnel segment. Therefore, after construction, the water-receiving surface is located on the outside of the tunnel segment, not at the joint between two adjacent tunnel segments. In other words, even if the flatness of the water-receiving surface of the tunnel segment is not ideal, it will not affect the sealing performance of the tunnel segment joint. Before demolding, as... Figure 3 As shown, the bottom mold 1 is rotated downwards by 90°, so that it rests on the ground, and the top mold 2 faces upwards. At this time, the top mold 2 is located above the bottom mold 1, and the inner mold 3, outer mold 4, and two end molds 5 are located around it. This facilitates the disassembly of the top mold 2, inner mold 3, outer mold 4, and two end molds 5, and makes it easier to lift the formed segments using lifting equipment to achieve horizontal demolding. The demolding operation is simpler and can directly use traditional lifting equipment, thus eliminating the need to design specific lifting equipment. Compared with the traditional method of directly casting annular segments, this method of casting segments can effectively reduce the volume of the mold, thereby reducing the space occupied by the mold and facilitating direct on-site construction.

[0042] Reference Figure 6 as well as Figure 7 In some embodiments of this application, the outer mold 41 includes at least two outer modules 411; when pouring concrete, each outer module 411 is assembled sequentially from bottom to top, thereby realizing segmented pouring of the tunnel lining segments. If the outer mold 41 is an integral structure, when pouring concrete, the concrete can only enter from the pouring port 100 between the two outer molds 41, and the entering concrete needs a long time to fall to the end mold 5 position, which will inevitably increase the concrete pouring time. At the same time, it also needs to undergo a long period of vibration to fully compact the concrete near the end mold 5 position. However, when the outer formwork 41 includes at least two outer modules 411, the outer modules 411 can be assembled sequentially from bottom to top during concrete pouring. That is, the lowest outer module 411 (the one closest to the end formwork 5) is assembled first, and then the corresponding section of that module 411 is poured directly. After that section is poured, the next outer module 411 is assembled, and the pouring is repeated. This process continues until all outer modules 411 are assembled, at which point the final pour is performed. In other words, by setting the outer formwork 41 as multiple outer modules 411, segmented pouring of the tunnel segments can be achieved, significantly reducing concrete pouring time and shortening concrete vibration time.

[0043] Reference Figure 7In some embodiments of this application, adjacent outer modules 411 are rotatably connected. When adjacent outer modules 411 are rotatably connected, during concrete pouring, the lowest outer module 411 is completely spliced ​​together, and the remaining outer modules 411 are rotated to the outside of the molding cavity to avoid interference with the concrete pouring. After one pour is completed, the next outer module 411 can be directly rotated to the molding cavity position and spliced, while the remaining outer modules 411 above can still be rotated to the outside of the molding cavity. That is to say, this rotatable connection method eliminates the need for splicing and fixing between adjacent outer modules 411; in addition, it also ensures the integrity of the outer mold body 41 (i.e., although the outer mold body 41 includes at least two outer modules 411, the outer modules 411 are rotatably connected together in sequence), thereby avoiding incorrect assembly order of the outer modules 411.

[0044] It should be noted that this application does not limit the method of implementing the rotatable connection between two adjacent external modules 411, for example, such as Figure 8 As shown, each of the two adjacent outer modules 411 is provided with a rotating arm 200, and the two corresponding rotating arms 200 are rotatably connected by a rotating shaft 300.

[0045] Reference Figure 8 In some embodiments of this application, the connecting channel jacking mold further includes an elastic element 7, which is disposed between two adjacent outer modules 411. The elastic element 7 is used to force the outer module 411 on the side closer to the pouring port 100 to rotate away from the molding cavity. Under the action of the elastic element 7, the outer module 411 on the side closer to the pouring port 100 can be forced to rotate away from the molding cavity. That is, the elastic element 7 forces the outer module 411 that has not been fully spliced ​​to automatically rotate away from the molding cavity, so as to avoid the outer module 411 that has not been fully spliced ​​from rotating due to vibration; otherwise, once the outer module 411 rotates due to vibration, it will easily affect the pouring of concrete.

[0046] Reference Figure 8In some embodiments of this application, the connecting channel jacking mold also includes a stop 8, which is disposed between two adjacent outer modules 411. When the elastic member 7 forces the outer module 411 near the pouring port 100 away from the molding cavity, the stop 8 is used to restrict the outer module 411 from continuing to rotate. Without the action of the stop 8, when the elastic member 7 forces the outer module 411 near the pouring port 100 away from the molding cavity, the weight of the unassembled outer module 411 is entirely on the elastic member 7, causing the elastic member 7 to bear a large load for a long time, which can easily shorten the service life of the elastic member 7. However, with the action of the stop 8, when the elastic member 7 forces the outer module 411 near the pouring port 100 away from the molding cavity, the stop 8 can restrict the outer module 411 from continuing to rotate, thereby avoiding the weight of the outer module 411 being entirely on the elastic member 7, which helps to extend the service life of the elastic member 7.

[0047] Reference Figure 8 In some embodiments of this application, the stop member 8 includes a fixing frame 81, a stop bar 82, and a connecting arm 83; the fixing frame 81 is disposed on the outer module 411 near the end mold 5, and the stop bar 82 is horizontally disposed on the fixing frame 81; the connecting arm 83 is disposed on the outer module 411 near the pouring port 100, and when the outer module 411 rotates away from the molding cavity until the connecting arm 83 contacts the stop bar 82, the rotation of the outer module 411 is restricted. When the outer module 411 rotates away from the molding cavity, the connecting arm 83 on the outer module 411 will also rotate until the connecting arm 83 rotates to contact the corresponding stop bar 82 (e.g., when the outer module 411 rotates away from the molding cavity). Figures 9 to 10 As shown, the stop bar 82 can restrict the rotation of the outer module 411.

[0048] Reference Figure 8 In some embodiments of this application, the fixing frame 81 is provided with a mounting hole 811, and the stop rod 82 is detachably disposed in the mounting hole 811; the connecting arm 83 is horizontally provided with an insertion hole 831 for adapting to the stop rod 82, and the movement trajectory of the insertion hole 831 as the connecting arm 83 rotates passes through the axis of the mounting hole 811. When the stop rod 82 is first inserted into the mounting hole 811, when the connecting arm 83 rotates to contact the stop rod 82 (e.g. Figure 9 and Figure 10 As shown), this can restrict the rotation of the corresponding outer module 411. When the outer module 411 is rotated until the insertion hole 831 on the connecting arm 83 of the outer module 411 aligns with the mounting hole 811, the stop rod 82 is then inserted into the insertion hole 831 and the mounting hole 811 in sequence (as shown). Figure 9 and Figure 11 As shown in the figure, the two adjacent external modules 411 can be locked.

[0049] Reference Figure 4 as well as Figure 5 In some embodiments of this application, the jacking mold for the connecting passage also includes an attached vibrator 9, which is disposed on the inner mold 3 and / or the outer mold 4. Compared to manually operated insert vibrators, this attached vibrator does not require manual operation. In addition, when the attached vibrator 9 is disposed on the inner mold 3, it does not increase the space occupied by the mold.

[0050] Reference Figure 6 , Figure 12 as well as Figure 13 In some embodiments of this application, when the central angle of the tube segment is greater than 180°, the inner mold 3 includes an upper mold body 31 and two lower mold bodies 32; the upper mold body 31 can move up and down (the up and down direction refers to...). Figure 17 The bottom mold 1 is slidably mounted on the bottom mold 1 (the vertical direction of the drawing), and both lower mold bodies 32 can slide left and right (left and right direction refers to...). Figure 17 The inner mold 3 (in the left-right direction of the drawing) is slidably set on the bottom mold 1. When the central angle of the tube segment is greater than 180°, if the inner mold 3 is a single integral structure, the tube segment will restrict the vertical sliding of the inner mold 3. However, if... Figure 17 As shown, when the inner mold 3 includes an upper mold body 31 and two lower mold bodies 32, during demolding, the two lower mold bodies 32 are first controlled to slide towards each other in the left-right direction to provide sufficient space for the upper mold body 31 to slide downwards. Then, the upper mold body 31 is controlled to slide downwards to complete demolding. Similarly, during mold closing, the upper mold body 31 first slides upwards, and then the two lower mold bodies 32 slide away from each other in the left-right direction to complete mold closing.

[0051] It should be noted that this application does not limit the vertical sliding of the upper mold body 31 or the horizontal sliding of the lower mold body 32. For example, as Figure 4 , Figure 5 as well as Figures 13 to 16 As shown, slide rails 400 are provided on the bottom mold 1 along the vertical and horizontal directions. Rollers 600 on the upper mold body 31 are slidably connected to the slide rails 400 arranged in the vertical direction, and rollers 600 on the lower mold body 32 are slidably connected to the slide rails 400 arranged in the horizontal direction. At the same time, screw drive mechanisms 500 are provided between the upper mold body 31 and the bottom mold 1, and between the lower mold body 32 and the bottom mold 1. The screw drive mechanisms 500 ensure that the rollers 600 do not disengage from the slide rails 400, and can drive the upper mold body 31 to slide vertically or the lower mold body 32 to slide horizontally by rotating the screw drive mechanisms 500.

[0052] In some embodiments of this application, when the central angle of the tube segment is less than or equal to 180°, the inner mold 3 is slidably mounted on the bottom mold 1. When the central angle of the tube segment is less than or equal to 180°, by directly mounting the inner mold 3 slidably on the bottom mold 1, both mold closing and demolding only require sliding the inner mold 3 upwards or downwards, thus eliminating the need to completely remove the inner mold 3 and improving the efficiency of mold closing and demolding. It should be noted that the upward and downward sliding installation method of the inner mold 3 can be the same as the upward and downward sliding installation method of the upper mold body 31.

[0053] When using this vertical (segmented) casting method, open concrete feeding is possible, increasing the concrete feeding speed by over 50%, and the open feed inlet facilitates segmented casting. Positioning the water collection surface on the outside of the segments does not affect the sealing of the segment joints, resulting in more precise overall segment width and strictly guaranteed flatness of the jacking surface. Simultaneously, the combination with a flip-type formwork allows for horizontal demolding, making formwork assembly more convenient and safer, saving manpower and space requirements. Actual production experiments have verified that this connecting tunnel jacking mold can significantly shorten the construction cycle and reduce construction costs. Actual production tests showed that the casting construction cycle for one segment was reduced by approximately 40%, and the overall cost decreased by approximately 20%.

[0054] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A pipe jacking mold for a connecting passage, characterized in that, The system includes a base, a bottom mold, a top mold, an inner mold, an outer mold, and two end molds. The bottom mold, the top mold, the inner mold, the outer mold, and the two end molds are spliced ​​together to form a forming cavity for forming a tube segment. The outer mold includes two symmetrically arranged outer mold bodies, and a pouring port is formed between the two outer mold bodies. The base is rotatably mounted on the bottom mold. After the mold is closed, the bottom mold is rotated upward by 90° so that both the bottom mold and the top mold fall on the base, with the pouring gate facing upward; before demolding, the bottom mold is rotated downward by 90° so that the bottom mold falls on the ground, with the top mold facing upward. The outer mold body includes at least two outer modules; when pouring concrete, each of the outer modules is assembled sequentially from bottom to top, thereby realizing the segmented pouring of the pipe segment; The two adjacent outer modules are rotatably connected; The connecting channel jacking mold also includes an elastic element, which is disposed between two adjacent outer modules. The elastic element is used to force the outer module near the pouring port to rotate away from the molding cavity. When pouring concrete, the bottom outer module is fully assembled, and the remaining outer modules are rotated to the outside of the forming cavity to avoid interfering with the concrete pouring. After one pour is completed, the next outer module can be directly rotated to the forming cavity position and assembled, while the remaining outer modules above can still be rotated to the outside of the forming cavity.

2. The jacking mold for the connecting passage as described in claim 1, characterized in that, The connecting channel jacking mold also includes a stop member, which is disposed between two adjacent outer modules; when the elastic member forces the outer module near the pouring port to rotate away from the molding cavity, the stop member is used to restrict the outer module from continuing to rotate.

3. The jacking mold for the connecting passage as described in claim 2, characterized in that, The stop component includes a fixed frame, a stop bar, and a connecting arm; the fixed frame is disposed on the outer module near the end mold side, and the stop bar is horizontally disposed on the fixed frame; the connecting arm is disposed on the outer module near the pouring port side, and when the outer module rotates away from the molding cavity until the connecting arm contacts the stop bar, the rotation of the outer module is restricted.

4. The jacking mold for the connecting passage as described in claim 3, characterized in that, The mounting bracket is provided with a mounting hole, and the stop bar is detachably mounted in the mounting hole; the connecting arm is horizontally provided with a insertion hole for fitting the stop bar, and the movement trajectory of the insertion hole as the connecting arm rotates passes through the axis of the mounting hole.

5. The jacking mold for the connecting passage as described in claim 1, characterized in that, The jacking mold for the connecting passage also includes an attached vibrator, which is disposed on the inner mold and / or the outer mold.

6. The jacking mold for the connecting passage as described in any one of claims 1-5, characterized in that, When the central angle of the tube segment is less than or equal to 180°, the inner mold can be slidably disposed on the bottom mold.

7. The jacking mold for the connecting passage as described in any one of claims 1-5, characterized in that, When the central angle of the tube segment is greater than 180°, the inner mold includes an upper mold body and two lower mold bodies; the upper mold body is slidably disposed on the bottom mold, and the two lower mold bodies are slidably disposed on the bottom mold.

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