CN118578515A - A PCCPL outer protective layer horizontal forming mold - Google Patents

Abstract

The present invention relates to the technical field of prestressed steel cylinder concrete pipe, and specifically to a horizontal forming mold for the outer protective layer of PCCPL. The forming mold comprises a horizontally arranged forming outer mold, the inner circumferential surface of the forming outer mold is adapted to the outer contour of the outer protective layer used for forming, the forming outer mold is used to be installed on the radial outer side of the tube core to form an annular interval with the outer wall of the tube core, a grouting port and an exhaust port are provided on the forming outer mold, and the exhaust port is provided on the top of the forming outer mold, and the axial ends of the forming outer mold are respectively provided with a first plugging structure and a second plugging structure, and the first plugging structure and the second plugging structure are respectively used to seal the axial ends of the annular interval to form an annular grouting space, so as to solve the technical problems that when the outer protective layer of PCCPL is made by the roller spraying process in the prior art, the roller spraying mortar will damage the surface of the prestressed steel wire, and in severe cases, the steel wire will be broken, and at the same time, the environmental pollution is serious, the material is wasted, and the protective layer molding quality is low.

Description

A PCCPL outer protective layer horizontal forming mold

Technical Field

The invention relates to the technical field of prestressed concrete cylinder pipes, and in particular to a horizontal forming mould for a PCCPL outer protective layer.

Background Art

Prestressed steel cylinder concrete pipe (PCCP for short) is a pipe made by winding annular prestressed steel wire around the outside of a concrete pipe core with a steel cylinder and making a cement mortar protective layer. It is specifically divided into small-diameter lined prestressed steel cylinder concrete pipe (PCCPL for short) and large-diameter embedded steel cylinder concrete pipe (PCCPE for short).

Among them, PCCPL is a pipe made of a steel cylinder and a concrete lining, with a circumferential prestressed steel wire wrapped around the outside of the steel cylinder, and then a cement mortar protective layer is made. PCCPE is a pipe made of a steel cylinder and concrete layers on both sides of the steel cylinder, with a circumferential prestressed steel wire wrapped around the outside of the core concrete, and then a cement mortar protective layer is made.

In actual production, PCCPE generally adopts a vertical method to produce the tube core and protective layer. However, PCCPL is usually produced horizontally due to its small diameter and large aspect ratio, and PCCPL is also arranged horizontally during transportation. In the prior art, when making the outer protective layer of PCCPL, the tube core is first arranged horizontally, and then a roller spraying process is used to use a roller spraying machine to spray the dry hard mortar mixed evenly according to the ratio on the surface of the tube core to form a dense mortar protective layer.

However, when the above roller spraying process is used to produce the outer protective layer of PCCPL, on the one hand, the mortar sprayed by the roller spraying machine is directly exposed to the air, which will cause environmental pollution and harm the health of workers. On the other hand, it will cause waste of mortar raw materials and high production costs. At the same time, due to the direct high-speed spraying of mortar, the surface of the prestressed steel wire will be damaged, and in severe cases, the steel wire will be broken. In addition, the formed protective layer has low density and high water absorption, and thus the protective ability of the protective layer is weak and the molding quality is low.

Summary of the invention

The purpose of the present invention is to provide a horizontal forming mold for the outer protective layer of PCCPL to solve the technical problems in the prior art of using the roller injection process to manufacture the outer protective layer of PCCPL, such as high-speed mortar injection damaging the steel wire, serious environmental pollution, material waste and low protective layer forming quality.

To achieve the above object, the technical solution of the PCCPL outer protective layer horizontal forming mold of the present invention is:

A horizontal molding die for a PCCPL outer protective layer comprises a horizontally arranged molding outer mold, the inner circumferential surface of the molding outer mold is adapted to the outer contour of the outer protective layer used for molding, the molding outer mold is used to be installed on the radial outside of a tube core to form an annular interval with the outer wall of the tube core, a grouting port and an exhaust port are provided on the molding outer mold, and the exhaust port is provided at the top of the molding outer mold, a first plugging structure and a second plugging structure are respectively provided at two axial ends of the molding outer mold, and the first plugging structure and the second plugging structure are respectively used to seal the two axial ends of the annular interval to form an annular grouting space.

Beneficial effects: The present invention pioneered the design of a horizontal forming mold for the outer protective layer of PCCPL, using a horizontally arranged forming outer mold and a tube core to form an annular interval, and using the first plugging structure and the second plugging structure to form an annular grouting space, so that the entire annular grouting space constitutes the forming space of the outer protective layer of PCCPL, so that the outer protective layer of PCCPL can be horizontally produced and manufactured using the mold, and this production method is produced by vacuum grouting, so there is no need to use a roller shooting process to produce the outer protective layer, which reduces environmental pollution and ensures the personal safety of operators. At the same time, the outer protective layer formed by vacuum grouting can ensure the density of the mortar, ensure the molding quality of the outer protective layer, and ensure the protective effect. At the same time, the mortar is completely injected into the mold, there is no waste of raw materials, the utilization rate of raw materials can be improved, and the production cost can be reduced. In summary, the horizontal forming mold for the outer protective layer of PCCPL of the present invention solves the technical problems of high-speed spraying of mortar damaging steel wire, serious environmental pollution, waste of materials, and low molding quality of the protective layer when the outer protective layer of PCCPL is made by the roller shooting process in the prior art.

Furthermore, the first sealing structure is an elastic sealing ring which is compressed and arranged between the outer molding die and the socket steel ring of the tube core.

Beneficial effect: Through the above design, the elastic sealing ring is used to seal the gap between the outer molding mold and the tube core to ensure the sealing performance.

Furthermore, the elastic sealing ring is detachably connected to the outer molding die, and a stopping structure for positioning and stopping the elastic sealing ring is provided on a side of the outer molding die facing away from the elastic sealing ring.

Beneficial effect: Through the above design, on the one hand, the stopping structure can be used to facilitate the actual assembly, ensure the installation accuracy of the elastic sealing ring, and then ensure the sealing effect of the elastic sealing ring; on the other hand, during actual grouting, the elastic sealing ring can be squeezed toward the stopping structure after being pressurized, so that the inner and outer peripheral surfaces of the elastic sealing ring are respectively more closely fitted to the outer peripheral surface of the socket steel ring and the inner wall of the molding mold, thereby improving the sealing effect.

Furthermore, the molding outer mold and the elastic sealing ring are both spliced in petals around the circumferential direction, the molding outer mold is fixedly connected by a locking device, and the petals of the elastic sealing ring are adapted to the petals of the molding outer mold.

Beneficial effect: Through the above design, the petal design of the elastic sealing ring is convenient for the installation of the elastic sealing ring, and the petals of the elastic sealing ring are matched with the petals of the molding outer mold, so that each petal of the elastic sealing ring can be installed corresponding to each petal of the molding outer mold, which is convenient for docking and positioning, and ensures that the splicing surfaces of each petal of the elastic sealing ring can be squeezed tight after the molding outer mold is fixed to ensure sealing.

Furthermore, the second sealing structure includes a socket baffle, which is arranged on the outside of one end of the socket steel ring of the molding outer mold for sleeve-mounting the tube core, and is fixedly connected to the molding outer mold by fasteners. The side of the socket baffle facing the molding outer mold is respectively provided with sealing structures for sealingly cooperating with the molding outer mold and the socket steel ring of the tube core.

Beneficial effect: The above design facilitates the actual assembly of the socket baffle, and when the forming outer mold and the socket baffle are fixed with fasteners, the corresponding sealing structure on the socket baffle can be squeezed and sealed with the corresponding sections of the forming outer mold and the socket steel ring.

Furthermore, an insertion section extending in the axial direction is provided on the side of the socket baffle facing the outer forming mold, and the outer circumferential surface of the insertion section is used for adapting and plugging with the inner circumferential surface of the socket steel ring.

Beneficial effect: Through the above design, the insertion section and the socket steel ring are plugged together, which can facilitate the positioning of the socket baffle and the positioning and installation of the plug steel ring, and also facilitate the installation and positioning of the socket baffle and the forming outer mold, and facilitate the installation of fasteners. On the other hand, during actual grouting, the insertion section can support the socket steel ring to prevent the socket steel ring from shrinking under pressure, thereby ensuring the dimensional accuracy of the socket steel ring. At the same time, during the pressure process, one end of the socket steel ring that cooperates with the corresponding sealing structure on the socket baffle has a tendency to tilt inward, and under the support of the insertion section, the end will only press against the sealing structure, thereby improving the sealing effect at this location.

Furthermore, the sealing structure is a sealing ring installed on the socket baffle and used to tightly fit with the forming outer mold and the socket steel ring respectively.

Beneficial effect: Through the above design, it is easy to achieve the sealing cooperation between the socket baffle and the forming outer mold and the socket steel ring respectively.

Furthermore, the molding outer mold is spliced in petals around the circumferential direction and fixedly connected by a locking device, and the petals of the molding outer mold are sealed and matched.

Beneficial effect: Through the above design, the forming outer mold is designed to be split, which makes it easy to install the forming outer mold on the radial outside of the tube, simplifies the installation steps and improves production efficiency.

Furthermore, the outer molding mold is symmetrically divided into two halves in the up and down directions, namely an upper half mold and a lower half mold.

Beneficial effect: Through the above design, on the one hand, the outer molding mold is designed to be two symmetrical petals, which is convenient for actual docking and installation; on the other hand, the number of petals can be reduced as much as possible, the docking surface between the petals can be reduced, and the sealing effect can be improved.

Furthermore, among the two mating surfaces of the upper mold and the lower mold, one is provided with a trapezoidal protrusion, and the other is provided with a dovetail groove, and the trapezoidal surface of the trapezoidal protrusion is adapted to the outer expansion opening of the dovetail groove, and an adapted stop-paddle rubber strip is provided in the closed groove cavity surrounded by the trapezoidal protrusion and the dovetail groove, so that the stop-paddle rubber strip can be squeezed by the trapezoidal protrusion and the dovetail groove to achieve sealing.

Beneficial effect: The trapezoidal protrusion and the dovetail groove are provided, on the one hand, to facilitate the actual positioning and docking, and on the other hand, the sealing effect between the two mating surfaces can be improved through the trapezoidal surface and the outward expansion opening. At the same time, the stop blade strip is squeezed tightly in the closed groove cavity, which not only ensures that the stop blade strip has good sealing performance, but also can protect the stop blade strip, increase its service life, and facilitate the installation of the stop blade strip to avoid falling off.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of a PCCPL outer protective layer horizontal molding die embodiment 1 of the present invention;

FIG2 is a cross-sectional view showing the matching relationship between the upper half mold and the tube core of Example 1 of a horizontal molding mold for the outer protective layer of PCCPL of the present invention;

Fig. 3 is a cross-sectional view taken along line B-B in Fig. 1;

Fig. 4 is an enlarged view of point A in Fig. 2;

Figure 5 is a schematic structural diagram of the socket baffle of embodiment 1 of a horizontal forming mold for the PCCPL outer protective layer of the present invention.

Description of reference numerals:

1. Socket steel ring; 2. Socket steel ring; 3. Concrete lining; 4. Prestressed steel wire; 5. Forming outer mold; 51. Upper mold; 52. Lower mold; 6. Bolt assembly; 61. Upper bolt liner; 62. Lower bolt liner; 63. Clamping bolt; 64. Clamping nut; 65. Pin; 7. Socket flange; 8. Socket baffle; 81. Insertion section; 9. Fastener; 91. Fastening nut; 92. Fastening bolt; 10. Elastic sealing ring; 11. Positioning stop ring; 12. Sealing ring; 13. Annular reinforcement rib; 14. Transverse reinforcement rib; 15. Grouting port; 16. Exhaust port; 17. Stop rubber strip; 18. Stop rib plate.

DETAILED DESCRIPTION

A horizontal forming mold for the outer protective layer of a PCCPL of the present invention. The use of a horizontally arranged forming outer mold enables the PCCPL to horizontally produce a protective layer, and the use of an annular spacer and a first plugging structure and a second plugging structure enables an annular grouting space to be formed, which is convenient for forming the protective layer, and thus there is no need to use a roller injection process to produce the protective layer, thereby reducing environmental pollution and ensuring the personal safety of operators. The exhaust port can be used to evacuate air during grouting, keeping the annular grouting space in a vacuum state at all times, thereby ensuring the compactness of the mortar injected into the annular grouting space, improving the forming quality of the protective layer, and thereby improving the protective effect of the outer protective layer.

The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

Specific embodiment 1 of a PCCPL outer protective layer horizontal forming mold provided by the present invention:

As shown in Figures 1 and 2, the PCCPL outer protective layer horizontal molding mold (hereinafter referred to as the molding mold) in this embodiment includes a horizontally arranged molding outer mold 5, which is used to be installed on the radial outside of the tube core to form an annular interval with the outer wall of the tube core, and the inner circumferential surface of the molding outer mold 5 is adapted to the outer contour of the PCCPL outer protective layer.

In this embodiment, as shown in Figures 1 and 2, a grouting port 15 and an exhaust port 16 are provided at the top of the outer mold 5, wherein the exhaust port 16 is used to connect an external vacuum pumping device (not shown in the figure), and the first and second plugging structures are respectively provided at the axial ends of the outer mold 5, and the first and second plugging structures are respectively used to seal the axial ends of the annular interval to form an annular grouting space, and the shape of the annular grouting space is adapted to the shape of the PCCPL outer protective layer, so that the PCCPL outer protective layer can be produced horizontally using the molding mold. In this way, before grouting, the annular grouting space is first vacuumed using a vacuum pumping device, and then during grouting, the cement mortar injected into the annular grouting space can be made more compact, reduce water absorption, improve compactness, and thus improve the protective quality of the outer protective layer. Of course, in other embodiments, under the condition of meeting the actual grouting quality, the exhaust port 16 may not be connected to the external vacuum pumping device, and at this time, the exhaust port 16 is only used for exhaust during grouting, and because the outer protective layer is formed by grouting, the compactness of the cement mortar can also be guaranteed, and the protective effect can be improved.

As shown in Figs. 1 and 3, in this embodiment, the molding outer mold 5 is symmetrically divided into two halves in the vertical direction, namely, an upper half mold 51 and a lower half mold 52. The upper half mold 51 and the lower half mold 52 are sealed and matched with each other, and the upper half mold 51 and the lower half mold 52 are fixedly connected by a locking device. On the one hand, the molding outer mold 5 is designed to be divided into two halves, which can facilitate the installation of the molding outer mold 5 on the radial outer side of the tube core and simplify the installation steps. On the other hand, the molding outer mold 5 is divided into two halves that are symmetrical in the upper and lower directions, which can facilitate the docking of the upper half mold 51 and the lower half mold 52. Of course, in other embodiments, the number of the petals of the molding outer mold 1 can be set to three, four, five, etc. according to actual needs.

Specifically, as shown in FIG3 , the locking device includes an upper bolt liner 61 and a lower bolt liner 62 respectively arranged on the upper half mold 51 and the lower half mold 52, and a notch opening outward is arranged on the upper bolt liner 61 and the lower bolt liner 62, and a pin 65 whose axis is parallel to the axis of the tube core is also arranged on the lower bolt liner 62, and a clamping bolt 63 is rotatably installed in the notch of the lower bolt liner 62 by the pin 65, so that the clamping bolt 63 is rotated to the notch of the upper bolt liner 61 and tightened by the clamping nut 64, so that the upper half mold 51 and the lower half mold 52 can be tightened, and the disassembly and assembly of the upper half mold 51 and the lower half mold 52 are convenient.

In this embodiment, as shown in FIG3 , of the two mating surfaces of the upper half mold 51 and the lower half mold 52, a trapezoidal protrusion is provided on the mating surface of the lower half mold 52, a dovetail groove is provided on the mating surface of the upper half mold 51, and the trapezoidal surface of the trapezoidal protrusion is adapted to the outer expansion of the dovetail groove, and an adapted stop-paddle rubber strip 17 is provided in the closed groove cavity surrounded by the trapezoidal protrusion and the dovetail groove, so that the stop-paddle rubber strip 17 is squeezed by the trapezoidal protrusion and the dovetail groove to achieve sealing. This arrangement, on the one hand, facilitates the positioning and docking of the two mating surfaces of the upper half mold 51 and the lower half mold 52, and on the other hand, the sealing effect between the two mating surfaces can be improved through the trapezoidal surface and the outer expansion.

At the same time, the stopper rubber strip 17 is squeezed tightly in the closed groove cavity, which can not only ensure the good sealing performance of the stopper rubber strip 17, but also protect the stopper rubber strip 17 and improve its service life. In addition, the closed groove cavity can facilitate the installation of the stopper rubber strip 17 and prevent it from falling off when the upper half mold 51 and the lower half mold 52 are separated. Of course, in other embodiments, a trapezoidal protrusion can be provided on the mating surface of the upper half mold 51, and a dovetail groove can be provided on the mating surface of the lower half mold 52.

In this embodiment, as shown in Figures 2 and 4, the first blocking structure is an elastic sealing ring 10 disposed between the outer molding die 5 and the socket steel ring 1 of the tube core. Specifically, the elastic sealing ring 10 is detachably connected to the outer molding die 5, and a stopper structure for positioning and stopping the elastic sealing ring 10 is disposed on the side of the outer molding die 5 facing away from the elastic sealing ring 10. Specifically, in this embodiment, the stopper structure is a positioning stopper ring 11 disposed on the side of the outer molding die 5 facing away from the elastic sealing ring 10. On the one hand, such a setting can facilitate actual assembly by utilizing the stopper structure, ensure the installation accuracy of the elastic sealing ring 10, and further ensure the sealing effect of the elastic sealing ring 10. On the other hand, during actual grouting, the elastic sealing ring 10 can be squeezed toward the stopper structure after being pressurized, so that the inner and outer peripheral surfaces of the elastic sealing ring 10 are respectively more closely fitted to the outer peripheral surface of the socket steel ring 1 and the inner wall of the molding die, thereby improving the sealing effect.

In this embodiment, as shown in FIG. 4 , a stop rib 18 is further provided on the inner circumferential surface of the molding die. Specifically, the stop rib 18 is provided on the side of the elastic sealing ring 10 that is away from the positioning stop ring 11. In this way, during actual installation, the stop rib 18 and the positioning stop ring 11 can be used to clamp the elastic sealing ring 10 to ensure the installation accuracy of the elastic sealing ring 10.

In this embodiment, the elastic sealing ring 10 is designed to be divided into petals around the circumferential direction, and the petals of the ring sealing baffle 10 are matched with the petals of the molding outer mold 5, that is, in this embodiment, the elastic sealing ring 10 is also symmetrically divided into two petals. In this way, when actually installing, the two petals of the elastic sealing ring 10 can be arranged corresponding to the upper half mold 51 and the lower half mold 52, which is convenient for the installation of the elastic sealing ring 10, and at the same time, it can be convenient for the docking and positioning of the two petals of the elastic sealing ring 10, and ensure that the joint surfaces of each petal of the elastic sealing ring 10 can be squeezed tightly after the upper half mold 51 and the lower half mold 52 are fixed to ensure sealing. The elastic sealing ring 10 is arranged as two symmetrical petals, which can also facilitate processing and manufacturing.

As shown in Fig. 2 and Fig. 5, in this embodiment, the second blocking structure is a bell baffle 8 arranged on one side of the bell steel ring 2 of the tube core. Specifically, the bell baffle 8 is arranged on the outer side of one end of the bell steel ring 2 of the tube core on the outer mold 5 for sleeve, and the bell baffle 8 is fixedly connected to the outer mold 5 by fasteners. Specifically, an outwardly extending outer edge is arranged on this side of the outer mold 5, and the bell baffle 8 is fixedly installed on the outwardly extending outer edge by fastening bolts 92 and fastening nuts 91, so that the bell baffle 8 is fixedly connected to the outer mold 5.

In this embodiment, as shown in Fig. 2 and Fig. 5, a sealing structure for sealing with the outer molding die 5 and the bell steel ring 2 of the tube core is respectively provided on the side of the bell baffle 8 facing the outer molding die 5. Specifically, the side of the bell baffle 8 facing the outer molding die 5 is provided with a matching groove at the position corresponding to the end face of the outer molding die 5 and the end face of the bell baffle 8, and a matching sealing ring 12 is installed in the groove, so that when the bell baffle 8 is fixed to the outer molding die 5, the sealing ring 12 at the corresponding position can be squeezed to achieve sealing, and the actual assembly of the bell baffle 8 can be facilitated.

In this embodiment, as shown in Figs. 2 and 5, the side of the bell baffle 8 facing the outer mold 5 is provided with an insertion section 81 extending in the axial direction, and the outer peripheral surface of the insertion section 81 is adapted to be inserted and connected with the inner peripheral surface of the bell steel ring 2. In this way, after the bell baffle 8 is installed, the insertion section 81 can be inserted and matched with the bell steel ring 2, which can facilitate the positioning and installation of the bell baffle 8 and the socket steel ring 1, and can also make the corresponding bolt holes of the bell baffle 8 and the outer edge of the molding outer mold 5 positioned, which can also facilitate the installation of the bell baffle 8 and the molding outer mold 5. On the other hand, during the actual grouting, the insertion section 81 can support the bell steel ring 2, prevent the bell steel ring 2 from shrinking under pressure, and ensure the dimensional accuracy of the bell steel ring 2. At the same time, during the pressure process, the end of the bell steel ring 2 that cooperates with the corresponding sealing structure on the bell baffle 8 has a tendency to tilt inward, and under the support of the insertion section 81, the end will only press against the sealing structure, thereby improving the sealing effect at this location.

The use process of the PCCPL outer protective layer horizontal molding mold of the present invention is as follows: first, the two petals of the elastic sealing ring 10 are respectively installed at the corresponding positions of the upper mold 51 and the lower mold 52, and each petal of the elastic sealing ring 10 is ensured to be arranged between the corresponding positioning stop ring 11 and the stop rib plate 18, and an arc-shaped gasket prefabricated according to the thickness size of the protective layer is placed in the mold cavity of the lower mold 52, and then the tube core is placed on the lower mold 52, the upper mold 51 and the lower mold 52 are snap-fitted and spliced, the mold bolt 63 is rotated into the notch of the upper bolt liner 61, and the mold nut 64 is tightened to complete the mold closing of the upper mold 51 and the lower mold 52 and make the docking surface of the upper mold 51 and the lower mold 52 sealed.

Insert the insertion section 81 of the socket baffle 8 into the interior of the socket steel ring 2 until the ends of the forming outer mold 5 and the socket steel ring 2 contact the corresponding sealing ring 12, tighten the fastening bolts 92 and the fastening nuts 91 to fix the forming outer mold 5 and the socket baffle 8, and seal the forming outer mold 5 and the end of the socket steel ring 2 toward the socket baffle 8, thereby forming an annular grouting space.

In this way, the assembly of the forming mold is completed, and then the exhaust port 16 is connected to an external vacuum device to vacuum the annular grouting space. After the vacuum is completed, cement mortar is injected into the annular grouting space through the grouting port 15, and vacuum is continuously drawn during the injection process. After the grouting is completed, the molding work is completed after the cement mortar hardens and takes shape.

In summary, the horizontal forming mold for the outer protective layer of PCCPL of the present invention forms an annular interval between the horizontally arranged forming outer mold 5 and the tube core, and forms an annular grouting space by using the first plugging structure and the second plugging structure, so that the entire annular grouting space constitutes the forming space of the outer protective layer of PCCPL, so that the outer protective layer of PCCPL can be produced by using the mold. And this production method is produced by grouting, so there is no need to use the roller injection process to produce the outer protective layer, which reduces environmental pollution and ensures the personal safety of operators. The exhaust port 16 can be used to evacuate air during grouting, so that the annular grouting space is always in a vacuum state, thereby ensuring the compactness of the mortar injected into the annular grouting space, improving the forming quality of the outer protective layer, and improving the protective effect. At the same time, the mortar is completely injected into the mold, there is no waste of raw materials, the utilization rate of raw materials can be improved, and the production cost can be reduced. In order to solve the technical problems of high-speed injection of mortar damaging steel wire, serious environmental pollution, and low forming quality of the protective layer when the PCCPL protective layer is made by the roller injection process in the prior art.

Embodiment 2 of the horizontal forming mold of the PCCPL outer protective layer of the present invention:

This embodiment provides a different molding outer mold. The difference from Embodiment 1 is that, in this embodiment, the molding outer mold is an integrated structure. During installation, the tube core is installed inside the molding outer mold by insertion. The elastic sealing strip is a complete ring and is elastically deformed and mounted on the socket steel ring.

Embodiment 3 of the horizontal forming mold of the PCCPL outer protective layer of the present invention:

This embodiment provides a different locking device, which is different from Embodiment 1 in that, in this embodiment, the locking device is a clamp, which clamps the molding mold to fix the upper mold and the lower mold.

Embodiment 4 of the horizontal forming mold of the PCCPL outer protective layer of the present invention:

This embodiment provides a different mating surface between the upper and lower molds, which is different from Embodiment 1 in that, in this embodiment, both mating surfaces of the upper and lower molds are planes, and a groove for installing the stopper rubber strip is provided on the mating surface of the upper mold. Of course, in other embodiments, both mating surfaces of the upper and lower molds are planes, and a groove for installing the stopper rubber strip may be provided on the mating surface of the lower mold, or grooves may be provided on both mating surfaces of the upper and lower molds.

Embodiment 5 of the horizontal forming mold of the PCCPL outer protective layer of the present invention:

The present embodiment provides a different first sealing structure, which is different from Embodiment 1 in that, in the present embodiment, the first sealing structure comprises a metal ring and an elastic ring included on the inner circumference of the metal ring, wherein the outer circumference of the metal ring is used for welding and fixing on the inner circumference of the molding outer mold to achieve sealing between the first sealing structure and the molding outer mold, and the inner circumference of the elastic ring is used for sticking on the outer circumference of the socket steel ring to achieve sealing between the first sealing structure and the socket steel ring.

Embodiment 6 of the horizontal forming mold of the PCCPL outer protective layer of the present invention:

This embodiment provides a different installation method between an elastic sealing ring and a molding outer mold, which is different from Embodiment 1 in that, in this embodiment, the elastic sealing ring is directly fixedly installed on the molding outer mold.

Embodiment 7 of the PCCPL outer protective layer horizontal forming mold of the present invention:

This embodiment provides a different elastic sealing ring, which is different from Embodiment 1 in that, in this embodiment, the elastic sealing ring is designed as an integral part and is directly mounted on the corresponding position of the socket steel ring during installation.

Embodiment 8 of the horizontal forming mold of the PCCPL outer protective layer of the present invention:

This embodiment provides a different second sealing structure. The difference from Embodiment 1 is that, in this embodiment, the second sealing structure is an annular sealing plate arranged between the molding outer mold and the socket steel ring. At this time, the thickness of the annular sealing plate needs to be considered to avoid affecting the molding size of the protective layer.

Embodiment 9 of the horizontal forming mold of the PCCPL outer protective layer of the present invention:

This embodiment provides a different second blocking structure, which is different from Embodiment 1 in that, in this embodiment, when actual needs are met, the side of the socket baffle facing the outer molding mold may not be provided with an insertion section, and this side is a plane.

Embodiment 10 of the horizontal forming mold of the PCCPL outer protective layer of the present invention:

In this embodiment, the difference from the embodiment 1 described above is that a composite vacuum treatment method of simultaneous water absorption is adopted, that is, a plurality of grouting ports and a plurality of exhaust ports are arranged on the molding outer mold, some of the exhaust ports are located at the top of the molding outer mold, and other parts of the exhaust ports are located at the sides and bottom of the molding outer mold, and the exhaust ports at the sides and bottom are equipped with water-permeable filter cloths and exhaust valves.

Embodiment 11 of the PCCPL outer protective layer horizontal molding die of the present invention:

In this embodiment, the difference from the embodiment 1 described above is that the locking device adopts the locking device for locking the first and second clamping mold bodies in the mold opening and closing mechanism and the tube mold device as disclosed in Publication (Announcement) No.: CN215660988U.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims (10)

1. A horizontal molding die for a PCCPL outer protective layer, characterized in that it comprises a horizontally arranged molding outer die (5), the inner circumferential surface of the molding outer die (5) is adapted to the outer contour of the outer protective layer used for molding, the molding outer die (5) is used to be installed on the radial outer side of the tube core to form an annular interval with the outer wall of the tube core, a grouting port (15) and an exhaust port (16) are provided on the molding outer die (5), and at least the exhaust port (16) is provided on the top of the molding outer die (5), and a first plugging structure and a second plugging structure are respectively provided at the axial ends of the molding outer die (5), and the first plugging structure and the second plugging structure are respectively used to seal the axial ends of the annular interval to form an annular grouting space. 2. The PCCPL outer protective layer horizontal forming mold according to claim 1 is characterized in that the first sealing structure is an elastic sealing ring (10) that is compressed between the forming outer mold (5) and the socket steel ring (1) of the tube core. 3. The PCCPL outer protective layer horizontal molding mold according to claim 2 is characterized in that the elastic sealing ring (10) is detachably connected to the molding outer mold (5), and a stopping structure for positioning and stopping the elastic sealing ring (10) is provided on the side of the molding outer mold (5) facing away from the elastic sealing ring (10). 4. The PCCPL outer protective layer horizontal molding mold according to claim 2 or 3 is characterized in that the molding outer mold (5) and the elastic sealing ring (10) are both spliced in petals around the circumferential direction, the molding outer mold (5) is fixedly connected by a locking device, and the petals of the elastic sealing ring (10) are adapted to the petals of the molding outer mold (5). 5. The PCCPL outer protective layer horizontal molding mold according to any one of claims 1-3 is characterized in that the second sealing structure includes a socket baffle (8), which is arranged on the outer side of one end of the socket steel ring (2) of the molding outer mold (5) for sleeve-mounting the tube core, and is fixedly connected to the molding outer mold (5) by fasteners (9), and the side of the socket baffle (8) facing the molding outer mold (5) is respectively provided with sealing structures for sealingly cooperating with the molding outer mold (5) and the socket steel ring (2) of the tube core. 6. The PCCPL outer protective layer horizontal molding mold according to claim 5 is characterized in that a plug-in section (81) extending axially is provided on the side of the socket baffle (8) facing the molding outer mold (5), and the outer peripheral surface of the plug-in section (81) is used for adapting and plugging with the inner peripheral surface of the socket steel ring (2). 7. The PCCPL outer protective layer horizontal forming mold according to claim 5 is characterized in that the sealing structure is a sealing ring (12) installed on the socket baffle (8) and used to fit tightly with the forming outer mold (5) and the socket steel ring (2) respectively. 8. The PCCPL outer protective layer horizontal molding mold according to any one of claims 1-3 is characterized in that the molding outer mold (5) is spliced in petals around the circumferential direction and fixedly connected by a locking device, and the petals of the molding outer mold (5) are sealed and matched. 9. The PCCPL outer protective layer horizontal molding mold according to claim 8 is characterized in that the molding outer mold (5) is symmetrically divided into two halves in the up and down directions, namely an upper half mold (51) and a lower half mold (52). 10. The PCCPL outer protective layer horizontal forming mold according to claim 9 is characterized in that, of the two mating surfaces of the upper half mold (51) and the lower half mold (52), one is provided with a trapezoidal protrusion, and the other is provided with a dovetail groove, and the trapezoidal surface of the trapezoidal protrusion is adapted to the outer expansion of the dovetail groove, and an adapted stop-paddle rubber strip (17) is provided in the closed groove cavity surrounded by the trapezoidal protrusion and the dovetail groove, so that the stop-paddle rubber strip (17) is squeezed by the trapezoidal protrusion and the dovetail groove to achieve sealing.