CN116038876B - A connecting channel jacking mold - Google Patents

Abstract

This application discloses a jacking mold for a connecting tunnel, including a base, a bottom mold, a top mold, an inner mold, an outer mold, and two end molds. The bottom mold, top mold, inner mold, outer mold, and two end molds are spliced together to form a forming cavity for forming tunnel segments. The outer mold includes two symmetrically arranged outer mold bodies, with a pouring port 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 upwards by 90°, so that both the bottom mold and the top mold rest on the base, with the pouring port facing upwards. Before demolding, the bottom mold is rotated downwards by 90°, so that the bottom mold rests on the ground, with the top mold facing upwards. This jacking mold for the connecting tunnel occupies little space, facilitates pouring and demolding, and does not affect the sealing performance of the tunnel segment joints.

Description

Connecting channel pipe jacking die

Technical Field

The application relates to the technical field of pipe jacking molds, in particular to a connecting channel pipe jacking mold.

Background

At present, the supporting mode of tunnel construction is mainly divided into shield construction and pipe jacking construction. The shield method is mainly used for constructing a supporting structure by splicing five prefabricated concrete segments, and the pipe jacking method is used for constructing a supporting structure by splicing prefabricated single-section concrete segments in sequence.

The existing pipe jacking die still has the defects that (1) because the concrete pipe joint constructed by a pipe jacking method is of a circular ring structure, the pipe jacking die is of a whole ring structure, the die is large in overall size, difficult to demold, large in occupied space and unfavorable for site construction, and (2) the pipe joint is required to be poured by adopting a vertical die in the prefabrication pouring process, the pouring operation opening is small, the construction progress is slow, the overall control of the flatness of the pipe section water receiving surface is not ideal, the tightness of the joint of the pipe joint is easy to be influenced, part of the surface gas of the concrete at a part of the position cannot be effectively escaped, special persons are required to repair the defect position after the pipe section is demolded, the construction period is long, and the cost is high.

Therefore, how to improve the existing pipe jacking die to overcome the above-mentioned shortcomings is a problem to be solved by the skilled person.

Disclosure of Invention

The application aims to provide a connecting channel jacking pipe die which is small in occupied space, convenient to pour and demold and free from affecting tightness of a duct piece splicing part.

The technical scheme includes that the connecting channel jacking die comprises a base, a bottom die, a top die, an inner die, an outer die and two end dies, wherein a forming cavity for forming a duct piece is formed by mutually splicing the bottom die, the top die, the inner die, the outer die and the two end dies, the outer die comprises two symmetrically arranged outer die bodies, a pouring opening is formed between the two outer die bodies, the base is rotatably arranged on the bottom die, after die assembly, the bottom die is rotated upwards by 90 degrees, so that the bottom die and the top die are both located on the base, the pouring opening faces upwards, the bottom die is rotated downwards by 90 degrees before die assembly, so that the bottom die falls on the ground, and the top die faces upwards.

Preferably, the outer mold body comprises at least two outer mold blocks, and when concrete is poured, the outer mold blocks are spliced sequentially from bottom to top, so that sectional pouring of the duct piece is realized. The concrete pouring device has the advantages that if the outer die body is of an integral structure, when concrete is poured, the concrete can only enter from the pouring opening between the two outer die bodies, the entering concrete can only fall to the end die position after a long time, the pouring time of the concrete is increased, and meanwhile, the concrete close to the end die position can be fully tamped after long-time vibration is needed. However, when the outer mold body comprises at least two outer mold blocks, the outer mold blocks can be spliced from bottom to top in turn when concrete is poured, namely, the lowermost outer mold block (namely, the outer mold block close to the end mold) is spliced, then a section of area corresponding to the outer mold block is directly poured, after the pouring of the section of area is finished, the next outer mold block is spliced, and pouring is performed again, and the like, and after the splicing of the outer mold blocks is finished, the final pouring is performed. That is, by arranging the outer mold body as a plurality of outer mold blocks, the segment casting of the segment can be realized, thereby being capable of sufficiently reducing the casting time of the concrete and being beneficial to shortening the vibrating time of the concrete.

Preferably, two adjacent outer modules are rotatably connected. The method has the advantages that when two adjacent outer mold blocks are rotatably connected, concrete is poured, one of the outer mold blocks at the lowest part is completely spliced, the other outer mold blocks are rotated to the outer side of the forming cavity so as to avoid interference to the poured concrete, after one-time pouring is finished, the next outer mold block can be directly rotated to the position of the forming cavity to complete splicing, and the other outer mold blocks above can still be rotated to the outer side of the forming cavity. In other words, the rotatable connection mode at least omits the splicing and fixing between two adjacent outer modules, and in addition, the integrity of the outer module is ensured (namely, although the outer module comprises at least two outer modules, the outer modules are rotatably connected together in sequence), so that the wrong sequence of the outer modules can be avoided.

Preferably, the connecting channel jacking pipe die further comprises an elastic piece, wherein the elastic piece is arranged between two adjacent outer die blocks, and the elastic piece is used for forcing the outer die block close to one side of the pouring opening to rotate in a direction away from the forming cavity. The elastic piece has the advantages that under the action of the elastic piece, the outer module close to one side of the pouring opening can be forced to rotate in the direction away from the forming cavity, namely the elastic piece forces the outer module which is not spliced to automatically rotate in the direction away from the forming cavity, so that the outer module which is not spliced is prevented from rotating due to vibration, otherwise, once the outer module rotates due to vibration, pouring of concrete is easily affected.

Preferably, the connecting channel jacking pipe die further comprises a stop piece, wherein the stop piece is arranged between two adjacent outer die blocks, and the stop piece is used for limiting the outer die blocks to continue to rotate after the elastic piece forces the outer die blocks close to one side of the pouring opening to be far away from the forming cavity. The elastic piece has the advantages that if the stop piece does not act, after the elastic piece forces the outer module close to one side of the pouring opening to be far away from the forming cavity, the weight of the outer module which is not spliced acts on the elastic piece completely, so that the elastic piece bears a larger load for a long time, and the service life of the elastic piece is shortened easily. However, under the action of the stop piece, after the elastic piece forces the outer module close to one side of the pouring opening to be far away from the forming cavity, the stop piece can limit the outer module to continuously rotate, so that the weight of the outer module is prevented from being fully acted on the elastic piece, and the service life of the elastic piece is prolonged.

The stop piece comprises a fixing frame, a stop rod and a connecting arm, wherein the fixing frame is arranged on the outer module close to one side of the end die, the stop rod is horizontally arranged on the fixing frame, the connecting arm is arranged on the outer module close to one side of the pouring opening, and when the outer module rotates in a direction away from the forming cavity, the outer module is limited to continuously rotate until the connecting arm is contacted with the stop rod. The outer die has the advantages that after the outer die block rotates in the direction away from the forming cavity, the connecting arm on the outer die block also rotates until the connecting arm rotates to be in contact with the corresponding stop rod, and the stop rod can limit the outer die block to rotate.

Preferably, the fixing frame is provided with a mounting hole, the stop rod is detachably arranged in the mounting hole, the connecting arm horizontally penetrates through a jack for adapting to the stop rod, and the jack passes through the axis of the mounting hole along with the rotating motion track of the connecting arm. The connecting arm has the advantages that when the stop rod is inserted into the mounting hole, the corresponding outer module can be limited to rotate when the connecting arm rotates to be in contact with the stop rod. When the outer module is rotated first until the jack on the connecting arm on the outer module is aligned with the mounting hole, the stop rod is inserted into the jack and the mounting hole in sequence, and then the two adjacent outer modules can be locked.

Preferably, the connecting channel jacking pipe die further comprises an attached vibrator, and the attached vibrator is arranged on the inner die and/or the outer die. The attached vibrator has the advantage that compared with a manually operated plug-in vibrator, the attached vibrator does not need manual operation. In addition, when the attached vibrator is arranged on the inner side die, the occupied space of the die is not increased.

Preferably, when the central angle of the segment is less than or equal to 180 degrees, the inner die is arranged on the bottom die in a vertically sliding manner. The pipe piece mold has the advantages that when the central angle of the pipe piece is smaller than or equal to 180 degrees, the inner mold is directly arranged on the bottom mold in a vertically sliding mode, and at the moment, no matter mold closing or demolding is carried out, only the inner mold is required to slide upwards or downwards, so that the inner mold is not required to be completely detached, and further the mold closing and demolding efficiency of the inner mold is improved.

Preferably, when the central angle of the duct piece is greater than 180 degrees, the inner die comprises an upper die body and two lower die bodies, wherein the upper die body can be arranged on the bottom die in an up-down sliding manner, and the two lower die bodies can be arranged on the bottom die in a left-right sliding manner. The pipe piece has the advantages that when the central angle of the pipe piece is larger than 180 degrees, if the inner side die is of an integral structure, the pipe piece can limit the inner side die to slide up and down. However, when the inner mold comprises an upper mold body and two lower mold bodies, the upper mold body can slide downwards when the two lower mold bodies slide in opposite directions along the left-right direction during demolding, and demolding can be completed. And similarly, when the mold is closed, the upper mold body slides upwards, and then the two lower mold bodies slide back along the left-right direction, so that the mold can be closed.

Compared with the prior art, the application has the beneficial effects that:

(1) The connecting channel jacking pipe die further comprises the base, and the base is rotatably connected with the bottom die, so that the bottom die is firstly rotated by 90 degrees after die assembly, the bottom die and the jacking die are enabled to fall on the base at the same time, namely, the base supports the bottom die and the jacking die, the pouring opening just faces upwards, at the moment, concrete can be poured into the pouring opening from top to bottom, namely, vertical pouring of the duct piece is achieved, pouring of the concrete (namely, the duct piece) is facilitated, after pouring is completed, trowelling and light receiving are conducted on the concrete at the pouring opening, namely, the water receiving surface of the concrete is located on the outer ring surface of the formed duct piece, after construction, the water receiving surface is located on the outer side of the duct piece, namely, the joint between two adjacent duct pieces is not located, namely, even if the water receiving surface flatness is not ideal, the sealing performance of the joint of the duct piece is not affected.

(2) Before the drawing of patterns, will the die block rotates 90 downwards, thereby makes the die block falls on subaerial, just the cope match-die orientation is upwards, at this moment, the cope match-die is located the top of die block, just interior side form outside mould and two the end mould is located just all around, thereby is convenient for unpack the cope match-die inside mould outside mould and two the end mould, and then be convenient for through lifting by crane equipment with the segment lifting after the shaping, in order to realize horizontal drawing of patterns, drawing of patterns operation is simpler, and can directly use traditional lifting by crane equipment, thereby need not to design the lifting by crane equipment of pertinence.

(3) Compared with the traditional casting mode of directly casting the annular duct piece, the casting mode of casting the duct piece can effectively reduce the size of the die, so that the occupied space of the die can be reduced, and the construction is convenient to directly perform on site.

Drawings

Fig. 1 is a perspective view of a connecting channel jacking pipe die (front surface) provided by the application.

Fig. 2 is a perspective view of the connecting channel jacking die (back) in fig. 1 according to the present application.

Fig. 3 is a schematic diagram of the connecting channel jacking pipe die in fig. 1 according to the present application, which is changed from a vertical state to a horizontal state.

Fig. 4 is a partial exploded view of the communication channel jacking die of fig. 1 provided by the present application.

Fig. 5 is an enlarged view of a portion of the fig. 4 article at I provided by the present application.

Fig. 6 is an exploded view of a part of the structure of the body 4 provided by the present application.

Fig. 7 is an enlarged view of the outer mold body of fig. 6 provided by the present application.

Fig. 8 is an enlarged view of part II in fig. 7 provided by the present application.

Fig. 9 is a front view of each of the structures of fig. 8 provided by the present application.

Fig. 10 is another state diagram of the structures of fig. 9 provided by the present application.

Fig. 11 is another state diagram of the structures of fig. 10 provided by the present application.

Fig. 12 is an enlarged view of the inner die of fig. 6 provided by the present application.

Fig. 13 is another view of the inner mold of fig. 12 according to the present application.

Fig. 14 is an enlarged view of a portion of fig. 13 at III, provided by the present application.

Fig. 15 is an enlarged view of the bottom mold of fig. 6 provided by the present application.

Fig. 16 is an enlarged view of a portion of the IV of fig. 15 provided by the present application.

Fig. 17 is a front view of the top mold omitted in fig. 4 provided by the present application.

In the figure, 1, a bottom die, 2, a top die, 3, an inner die, 31, an upper die, 32, a lower die, 4, an outer die, 41, an outer die, 411, an outer die, 5, an end die, 6, a base, 7, an elastic piece, 8, a stop piece, 81, a fixing frame, 811, a mounting hole, 82, a stop rod, 83, a connecting arm, 831, an inserting hole, 9, an attached vibrator, 100, a pouring opening, 200, a rotating arm, 300, a rotating shaft, 400, a sliding rail, 500, a screw driving mechanism, 600 and a roller.

Detailed Description

The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation. The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1 to 3, an embodiment of the present application provides a tie channel jacking mold, which comprises a base 6, a bottom mold 1, a jacking mold 2, an inner mold 3, an outer mold 4 and two end molds 5, wherein a molding cavity for molding a pipe piece is formed by mutually splicing the bottom mold 1, the jacking mold 2, the inner mold 3, the outer mold 4 and the two end molds 5, the outer mold 4 comprises two outer mold bodies 41 which are symmetrically arranged, a pouring opening 100 is formed between the two outer mold bodies 41, the base 6 is rotatably arranged on the bottom mold 1, after mold clamping, the bottom mold 1 is rotated upwards by 90 degrees, so that the bottom mold 1 and the jacking mold 2 are both fallen on the base 6, the pouring opening 100 is upwards, and before mold stripping, the bottom mold 1 is rotated downwards by 90 degrees, so that the bottom mold 1 falls on the ground, and the jacking mold 2 is upwards. The rotatable connection between the base 6 and the bottom die 1 is not limited in the present application, and the rotatable connection is realized by, for example, hinging.

The working principle of the connecting channel jacking die is that the connecting channel jacking die further comprises a base 6 and is rotatably connected with the bottom die 1, so that after die assembly, the bottom die 1 is rotated upwards by 90 degrees, and then the bottom die 1 and the top die 2 are simultaneously placed on the base 6, namely, the base 6 supports the bottom die 1 and the top die 2, and the pouring opening 100 is just upwards, at the moment, as shown in fig. 1 and 2, concrete can be poured into the pouring opening 100 from top to bottom, namely, vertical pouring of a duct piece is realized, pouring of the concrete (namely, the duct piece) is facilitated, after pouring is completed, trowelling and light receiving are carried out on the concrete at the pouring opening 100, namely, the water receiving surface of the concrete is positioned on the outer ring surface of the formed duct piece, namely, the water receiving surface of the formed duct piece is positioned on the outer side of the duct piece, namely, not positioned at the joint between two adjacent duct pieces, namely, the water receiving surface of the duct piece is not ideal, and the sealing performance of the joint is not influenced. Before the drawing of patterns, as shown in fig. 3, rotate 90 downwards with die block 1 to make die block 1 fall on subaerial, and top mould 2 orientation top, at this moment, top mould 2 is located die block 1's top, and inboard mould 3, outside mould 4 and two end moulds 5 are located just all around, thereby be convenient for dismantle top mould 2, inboard mould 3, outside mould 4 and two end moulds 5, and then be convenient for through lifting by crane the section of jurisdiction after the shaping, in order to realize horizontal drawing of patterns, drawing of patterns operation is simpler, and can directly use traditional lifting by crane equipment, thereby need not to design the lifting by crane of pertinence. Compared with the traditional casting mode of directly casting the annular duct piece, the casting mode of casting the duct piece can effectively reduce the size of the die, so that the occupied space of the die can be reduced, and the construction is convenient to directly perform on site.

Referring to fig. 6 and 7, in some embodiments of the present application, the outer mold 41 includes at least two outer mold blocks 411, and when concrete is poured, each outer mold block 411 is sequentially spliced from bottom to top, thereby realizing the sectional pouring of the segment. If the outer mold 41 is of an integral structure, when concrete is poured, the concrete can only enter from the pouring opening 100 between the two outer mold 41, and the entering concrete can only fall to the position of the end mold 5 after a long time, which can increase the pouring time of the concrete, and meanwhile, the concrete close to the position of the end mold 5 can be fully tamped after long-time vibration. However, when the outer mold 41 includes at least two outer mold blocks 411, the outer mold blocks 411 can be spliced from bottom to top when concrete is poured, i.e., the lowermost outer mold block 411 (i.e., the outer mold block 411 close to the end mold 5) is spliced, then a section of the area corresponding to the outer mold block 411 is directly poured, after the casting of the section of the area is completed, the next outer mold block 411 is spliced, and casting is performed again, and so on, after the splicing of each outer mold block 411 is completed, the final casting is performed. That is, by arranging the outer mold 41 as the plurality of outer mold blocks 411, the segment casting of the segment is realized, so that the casting time of the concrete can be sufficiently reduced, and the vibrating time of the concrete can be advantageously shortened.

Referring to fig. 7, in some embodiments of the application, there is a rotatable connection between two adjacent outer modules 411. When two adjacent outer mold blocks 411 are rotatably connected, concrete is poured, one outer mold block 411 at the lowest position is completely spliced, the other outer mold blocks 411 are rotated to the outer side of the forming cavity so as to avoid interference to the poured concrete, after one pouring is finished, the next outer mold block 411 can be directly rotated to the position of the forming cavity to complete splicing, and the other outer mold blocks 411 at the upper position can still be rotated to the outer side of the forming cavity. That is, the rotatable connection at least omits the splicing and fixing between two adjacent outer modules 411, and in addition, the integrity of the outer mold 41 is ensured (that is, although the outer mold 41 includes at least two outer modules 411, the outer modules 411 are rotatably connected together in sequence), so that the wrong sequence of the outer modules 411 can be avoided.

It should be noted that the rotatable connection manner between two adjacent outer modules 411 is not limited in the present application, for example, as shown in fig. 8, the two adjacent outer modules 411 are each provided with a rotating arm 200, and the corresponding two rotating arms 200 are rotatably connected through the rotating shaft 300.

Referring to fig. 8, in some embodiments of the present application, the tie channel jacking mold further includes an elastic member 7, where the elastic member 7 is disposed between two adjacent outer mold blocks 411, and the elastic member 7 is used to force the outer mold block 411 on the side close to the pouring opening 100 to rotate in a direction away from the molding cavity. Under the action of the elastic piece 7, the outer module 411 on one side close to the pouring opening 100 can be forced to rotate in the direction away from the forming cavity, namely the elastic piece 7 forces the outer module 411 which is not spliced to automatically rotate in the direction away from the forming cavity, so that the outer module 411 which is not spliced can be prevented from rotating due to vibration, otherwise, once the outer module 411 rotates due to vibration, the pouring of concrete is easily affected.

Referring to fig. 8, in some embodiments of the present application, the tie-channel jacking mold further includes a stopper 8, where the stopper 8 is disposed between two adjacent outer mold blocks 411, and the stopper 8 is used to limit the outer mold blocks 411 from continuing to rotate when the outer mold blocks 411 on the side close to the pouring opening 100 are forced to move away from the forming cavity by the elastic member 7. If the stopper 8 does not act, after the elastic member 7 forces the outer mold block 411 on the side close to the pouring opening 100 to move away from the molding cavity, the weight of the outer mold block 411 which is not spliced acts on the elastic member 7, so that the elastic member 7 bears a larger load for a long time, and the service life of the elastic member 7 is easily shortened. However, under the action of the stop member 8, when the elastic member 7 forces the outer module 411 on the side close to the pouring opening 100 to move away from the forming cavity, the stop member 8 can limit the outer module 411 to rotate continuously, so that the weight of the outer module 411 is prevented from acting on the elastic member 7, and the service life of the elastic member 7 is prolonged.

Referring to fig. 8, in some embodiments of the present application, the stopper 8 includes a fixing frame 81, a stopper rod 82 and a connecting arm 83, the fixing frame 81 is disposed on an outer module 411 on a side close to the end mold 5, the stopper rod 82 is horizontally disposed on the fixing frame 81, the connecting arm 83 is disposed on the outer module 411 on a side close to the pouring opening 100, and when the outer module 411 rotates in a direction away from the molding cavity, the outer module 411 is restricted from continuing to rotate until the connecting arm 83 contacts the stopper rod 82. 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 with the corresponding stop lever 82 (as shown in fig. 9 to 10), and the stop lever 82 can limit the outer module 411 to rotate.

Referring to fig. 8, in some embodiments of the present application, a mounting hole 811 is formed in the fixing frame 81, the stopper rod 82 is detachably disposed in the mounting hole 811, the connection arm 83 is horizontally provided with a receptacle 831 for adapting to the stopper rod 82, and a movement track of the receptacle 831 along with the rotation of the connection arm 83 passes through an axis of the mounting hole 811. When the stopper rod 82 is inserted into the mounting hole 811, the corresponding outer module 411 can be restricted from rotating when the connection arm 83 rotates to contact with the stopper rod 82 (as shown in fig. 9 and 10). When the outer module 411 is rotated until the insertion hole 831 of the connecting arm 83 of the outer module 411 is aligned with the mounting hole 811, and then the stop rod 82 is sequentially inserted into the insertion hole 831 and the mounting hole 811 (as shown in fig. 9 and 11), two adjacent outer modules 411 can be locked.

Referring to fig. 4 and 5, in some embodiments of the present application, the communication channel jacking mold further includes an attached vibrator 9, and the attached vibrator 9 is disposed on the inner mold 3 and/or the outer mold 4. Compared with a manually operated plug-in vibrator, the attached vibrator does not need manual operation. In addition, when the attached vibrator 9 is provided on the inner mold 3, the occupied space of the mold is not increased.

Referring to fig. 6, 12 and 13, in some embodiments of the present application, when the central angle of the segment is greater than 180 °, the inner mold 3 includes an upper mold body 31 and two lower mold bodies 32, wherein the upper mold body 31 is slidably disposed on the bottom mold 1 up and down (the up and down direction refers to the up and down direction of the drawing sheet in fig. 17), and the two lower mold bodies 32 are slidably disposed on the bottom mold 1 both right and left (the right and left direction refers to the right and left direction of the drawing sheet in fig. 17). When the central angle of the pipe piece is larger than 180 degrees, if the inner side die 3 is of an integral structure, the pipe piece can limit the inner side die 3 to slide up and down. However, as shown in fig. 17, when the inner mold 3 includes the upper mold body 31 and the two lower mold bodies 32, the two lower mold bodies 32 are controlled to slide in the left-right direction during demolding, so that sufficient space is provided for the downward sliding of the upper mold body 31, and then the upper mold body 31 is controlled to slide downward, thereby completing demolding. Similarly, during mold closing, the upper mold body 31 slides upward, and then the two lower mold bodies 32 slide backward in the left-right direction, thereby completing mold closing.

The present application is not limited to the manner of mounting the upper mold body 31 to slide up and down and the lower mold body 32 to slide left and right, and for example, as shown in fig. 4, 5 and 13 to 16, a slide rail 400 is provided on the bottom mold 1 in the up-down and left-right directions, a roller 600 on the upper mold body 31 is connected to the slide rail 400 provided in the up-down direction in a sliding manner up and down manner, and the roller 600 on the lower mold body 32 is connected to the slide rail 400 provided in the left-right direction in a sliding manner left and right, and at the same time, a screw driving mechanism 500 is provided between the upper mold body 31 and the bottom mold 1 and between the lower mold body 32 and the bottom mold 1, and the screw driving mechanism 500 ensures that the roller 600 does not separate from the slide rail 400, and the screw driving mechanism 500 is rotated to drive the upper mold body 31 to slide up and down or drive the lower mold body 32 to slide left and right.

In some embodiments of the present application, when the central angle of the segment is less than or equal to 180 °, the inner mold 3 is slidably disposed on the bottom mold 1. When the central angle of the duct piece is smaller than or equal to 180 degrees, the inner side die 3 is directly arranged on the bottom die 1 in a vertically sliding manner, and at the moment, the inner side die 3 only needs to slide upwards or downwards no matter the die is closed or released, so that the inner side die 3 does not need to be completely detached, and the die closing and releasing efficiency of the inner side die 3 is improved. The manner of vertically sliding the inner mold 3 may be the same as the manner of vertically sliding the upper mold 31.

When the vertical (sectional type) pouring mode is adopted, open concrete feeding can be realized, the feeding speed of concrete is improved by more than 50%, the open feeding hole is more beneficial to sectional pouring and tamping, the water collecting surface is arranged on the outer side of the duct piece, the tightness of the duct piece splicing position is not affected, the whole width of the duct piece is more accurate, and the flatness of the pushing surface is strictly ensured. Meanwhile, the horizontal demolding can be realized by combining a turnover type mold assembling form, the mold assembling is more convenient and safe, and the manpower and site configuration are saved. According to practical production experimental verification, the connecting channel jacking pipe die can greatly shorten the construction period and save the construction cost. Through production practical tests, the casting construction period of one duct piece is reduced by about 40%, and the overall cost is reduced by about 20%.

The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims (7)

1. A jacking mold for a connecting channel, characterized in that it comprises a base, a bottom mold, a top mold, an inner mold, an outer mold, and two end molds, wherein 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, 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 channel as described in claim 1, characterized in that the jacking mold for the connecting channel further includes a stop member, the stop member being 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 connecting channel jacking mold as described in claim 2, characterized in that the stop member includes a fixed frame, a stop rod, and a connecting arm; the fixed frame is disposed on the outer module near the end mold side, and the stop rod 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 rod, the rotation of the outer module is restricted. 4. The jacking mold for the connecting channel as described in claim 3, characterized in that 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 an insertion hole for adapting to 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, wherein the jacking mold for the connecting passage further includes an attached vibrator, the attached vibrator being disposed on the inner mold and/or the outer mold. 6. The jacking mold for the connecting channel as described in any one of claims 1-5, characterized in that, when the central angle of the pipe 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 channel as described in any one of claims 1-5, characterized in that, when the central angle of the pipe 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.