A manufacturing method of a hydraulically adjustable multi-compartment precast pipe gallery mold and a multi-compartment precast pipe gallery

Abstract

The present invention relates to a hydraulically adjustable multi-compartment precast pipe gallery mold, which includes a base, an inner mold, and an outer mold. A precast cavity of the pipe gallery is formed among the base, the inner mold, and the outer mold. The number of inner molds is three groups. Each group of inner molds includes two inner side molds in the left-right direction and one inner top mold above. The three groups of inner molds also include an inner mold adjusting plate detachably connected to the middle of the inner top mold through a flange, so that the length of the inner mold in the left-right direction is adjustable. The outer mold includes outer side molds on the left and right sides and end molds on the front and back sides. The end mold also includes an end mold adjusting plate at the corresponding position of the inner mold adjusting plate. The number of inner mold adjusting plates, bases, and end mold adjusting plates is multiple, and multiple models are set corresponding to different lengths in the left-right direction. The present invention also relates to a manufacturing method of a multi-compartment precast pipe gallery. The structure of the present invention is simple, with modular design and strong versatility, improving the utilization rate of the mold, and belongs to the technical field of construction equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of construction equipment, and particularly relates to a hydraulically adjustable multi-compartment precast pipe gallery mold, and also relates to a manufacturing method of a multi-compartment precast pipe gallery. Background Art

[0002] A pipe gallery refers to a municipal shared tunnel built under a city, integrating various municipal pipelines such as electricity, communication, water supply, and gas. It is equipped with special inspection openings, hoisting openings, and monitoring systems, and is implemented with unified planning, unified design, unified construction, and unified management. It is an important infrastructure and "lifeline" to ensure the operation of the city. For the production of traditional pipe galleries, most of them use on-site manual formwork support and pouring, with a long construction period, high difficulty, and high labor costs. At present, the replacement of traditional cast-in-place pipe galleries with precast pipe galleries is the trend of building industrialization. A traditional precast pipe gallery mold can only produce a pipe gallery with one cross-sectional form, cannot meet the needs of different cross-sectional sizes, has low mold utilization rate, low flexibility, and high mold input cost. Summary of the Invention

[0003] Aiming at the technical problems existing in the prior art, the purpose of the present invention is to provide a hydraulically adjustable multi-compartment precast pipe gallery mold with strong versatility and easy to realize modular production of pipe galleries.

[0004] Another purpose of the present invention is to provide a manufacturing method of a multi-compartment precast pipe gallery using a hydraulically adjustable multi-compartment precast pipe gallery mold to prepare a pipe gallery.

[0005] In order to achieve the above purposes, the present invention adopts the following technical solutions:

[0006] A hydraulically adjustable multi-compartment precast pipe gallery mold, including a base, an inner mold, and an outer mold. The inner mold and the outer mold are arranged on the base, and the inner mold is inside the outer mold. Thus, a precast cavity of the pipe gallery is formed between the base, the inner mold, and the outer mold. It is characterized in that: the number of inner molds is three groups, and each group of inner molds includes two inner side molds in the left-right direction and one inner top mold in the upper direction. Each group of inner molds also includes an inner mold adjusting plate detachably lapped in the middle of the inner top mold, so that the length of this group of inner molds in the left-right direction is adjustable; the outer mold includes outer side molds on the left and right sides and end molds on the front and back sides. The end mold also includes an end mold adjusting plate at the corresponding position of the inner mold adjusting plate; the number of inner mold adjusting plates is multiple, and multiple models are set corresponding to different lengths in the left-right direction; the number of bases is multiple, and multiple models are set corresponding to different lengths in the left-right direction; the number of end mold adjusting plates is multiple, and multiple models are set corresponding to different lengths in the left-right direction.

[0007] As a preference, the inner mold further includes an inner mold support and a hydraulic driving device; the inner mold support is placed on the base and supports the inner top mold from below; the inner side mold and the inner top mold are hinged, and a hydraulic driving device is installed between the two, so that the inner side mold rotates relative to the inner top mold.

[0008] As a preference, each inner top mold includes two base plate members, which are located on the left and right sides and are respectively hinged to the two inner side molds, and the inner mold adjusting plate is connected between the two base plate members through a flange.

[0009] As a preference, guide rails are provided on both the outer side mold and the end mold, and pulleys are provided on the base. The guide rails are matched with the pulleys, so that the two outer side molds slide relative to the base in the left-right direction, and the two end molds slide relative to the base in the front-back direction.

[0010] As a preference, a hydraulic adjustable multi-compartment precast pipe gallery mold further includes an attached vibrator; the two outer side molds are both connected with an attached vibrator by means of a buckle.

[0011] As a preference, positioning pins are provided on the base, and the positioning pins position the metal corrugated pipe.

[0012] As a preference, the end molds are divided into two categories according to the structure. The first category is the end mold with a socket and a spigot for the combination of precast pipe gallery segments, and the second category is the end mold with a rubber water stop groove for the combination of precast pipe gallery segments and cast-in-place segments; all end molds are reserved with high-elasticity sealant grooves.

[0013] As a preference, a hydraulic adjustable multi-compartment precast pipe gallery mold is a three-compartment split horizontal mold, which is divided into an upper half mold for pouring the upper half of the pipe gallery and a lower half mold for pouring the lower half of the pipe gallery. The upper half and the lower half of the pipe gallery are both poured prone.

[0014] A manufacturing method of a multi-compartment precast pipe gallery uses a hydraulic adjustable multi-compartment precast pipe gallery mold, and includes the following steps: (1) Select and install the corresponding type of inner mold adjusting plate, end mold adjusting plate and base according to the length of the precast pipe gallery in the left-right direction; (2) Weld positioning pins on the base for positioning the metal corrugated pipe; (3) The inner mold retracts inward, and the outer mold expands outward. After providing space to hoist the steel reinforcement cage, install the metal corrugated pipe and embedded parts, and the inner mold and the outer mold are reset and locked; (4) Pour concrete; (5) After curing, the inner mold retracts inward, and the outer mold expands outward to complete demolding; (6) Move the pipe gallery to the curing area to complete subsequent curing.

[0015] As a preference, in step (4), first pour concrete with a height of one-third of the cross-sectional height into the precast cavity, use an attached vibrator for vibration, and use a vibrating rod for manual vibration. Repeat this process and complete the pouring of the remaining cross-sectional height of concrete, which is poured in three times in total.

[0016] The principle of the present invention is as follows:

[0017] The multi-compartment precast pipe gallery mold is modularly designed to achieve multiple uses with one mold and repeated utilization. The precast three-compartment pipe gallery includes a natural gas compartment, an electric power compartment, and a comprehensive compartment. Each compartment has a designed minimum size and is equipped with inner mold adjusting plates of different specifications. The inner mold adjusting plates are connected to the original inner top plate by flanges and are detachable. In this way, on the basis of the minimum size, by adding inner mold adjusting plates in the middle of the inner top plate and adding end mold adjusting plates on the end molds while replacing the base, the width of the compartment can be changed, and then the cross-sectional size can be adjusted. Multiple types of inner mold adjusting plates and end mold adjusting plates are equipped according to the size and are used in combination with the corresponding types of bases. Two types of end molds are equipped according to the structure. One type is used for the combination of precast pipe gallery segments, and the other type is used for the combination of precast pipe gallery segments and cast-in-place segments. Thus, it can be applicable to the production of most pipe galleries, has strong versatility, and the mold can be reused.

[0018] The present invention has the following advantages:

[0019] 1. Simple structure, modular design, strong versatility, and improved utilization rate of the mold.

[0020] 2. The inner mold is provided with a hydraulic driving device, which can control the inner contraction and restoration of the inner mold, that is, control the demolding and positioning of the pipe gallery, and improve the working efficiency of the mold.

[0021] 3. Stiffening ribs are provided on the mold panel, which can strengthen the stiffness of the mold, avoid the lateral pressure of the concrete slurry on the inner mold during the preparation of the pipe gallery from causing its deformation, and further cause the deformation of the prepared pipe gallery, and at the same time prevent slurry leakage.

[0022] 4. The outer mold adopts a guiding mechanism structure. Preferably, the guide rail and the pulley are in clearance fit, which can enable the end mold and the outer side mold to extend outward or retract inward in the horizontal direction. Moreover, the guiding mechanism can play a role in accurate positioning and limiting, avoiding deviation when the outer mold moves. This guiding mechanism can keep the outer side mold in a vertical state during the mold assembly and demolding processes of the mold outer mold, and enable the outer side mold to move in the left and right horizontal directions, keep the end mold in a vertical state, and enable the end mold to move in the front and back horizontal directions.

[0023] 5. Attached vibrators are installed. The vibrators are fixed in the middle and lower parts of the outer side mold by buckles, with two on each side, a total of four. Such a setting ensures that the concrete pouring process can be fully vibrated.

[0024] 6. The positioning pins can accurately position the spatial position of the metal corrugated pipe. Description of the Drawings

[0025] Figure 1 It is a front view of a hydraulic adjustable multi-compartment precast pipe gallery mold as the upper half mold.

[0026] Figure 2 It is a top view of a hydraulically adjustable multi - compartment precast pipe gallery mold as the upper half mold.

[0027] Figure 3 It is a front view of a hydraulically adjustable multi - compartment precast pipe gallery mold as the lower half mold.

[0028] Figure 4 It is a top view of a hydraulically adjustable multi - compartment precast pipe gallery mold as the lower half mold.

[0029] Among them, 1 is the base, 2 is the outer mold, 3 is the end mold, 4 is the inner mold, 5 is the inner top mold, 6 is the inner mold support, 7 is the hydraulic drive device, 8 is the inner mold adjustment plate, 9 is the end mold adjustment plate, 10 is the guide rail, 11 is the pulley, 12 is the positioning pin, 13 is the rubber water stop groove, 14 is the reserved high - elasticity sealant groove, 15 is the attached vibrator, and 16 is the flange. Specific implementation mode

[0030] The following will further elaborate on the present invention in combination with the specific implementation mode.

[0031] A hydraulically adjustable multi - compartment precast pipe gallery mold can be used as the upper half mold for pouring the upper half of the pipe gallery (see Figure 1 and Figure 2 ) and the lower half mold for pouring the lower half of the pipe gallery (see Figure 3 and Figure 4 ). Both the upper half and the lower half of the pipe gallery are poured prone. After the lower half of the pipe gallery is poured, it is flipped 180°, and the upper half and the lower half of the pipe gallery are assembled. The following is an explanation of the upper half mold.

[0032] A hydraulically adjustable multi - compartment precast pipe gallery mold includes a base and a split inner mold and outer mold. The number of inner molds is three groups, corresponding to three compartments. Each compartment includes inner molds on the left and right sides, an inner top mold on the top, an inner mold support, and a hydraulic drive device. Among them, the inner molds and the inner top mold are hinged, a hydraulic drive device is installed between the inner molds and the inner top mold, and the inner top mold is supported by the inner mold support. The outer mold includes outer molds arranged oppositely on the left and right sides and end molds arranged oppositely in the front and back. The base, the outer mold, and the inner mold enclose a precast cavity.

[0033] The guide rail and the fixed pulley constitute a guiding mechanism. The guide rail is fixed on the outer mold and the end mold, and the fixed pulley is fixed on the base and can rotate. In this way, the outer mold can be horizontally translated in the left - right direction through the guiding mechanism, and the end mold can be horizontally translated in the front - back horizontal direction through the guiding mechanism. Thus, the retraction and outward extension of the outer mold and the end mold are controlled to achieve mold assembly and demolding.

[0034] The mold is made according to the minimum cross-sectional size of the pipe gallery. The mold can be adjusted according to the actual cross-sectional size of the pipe gallery during the actual prefabrication process. The cross-sectional size can be adjusted by adding or replacing different types of inner mold adjustment plates, end mold adjustment plates and replacing the base. The inner mold adjustment plate is connected to the original inner top mold with a flange.

[0035] The mold can use the inner mold adjustment plate and the end mold adjustment plate to adjust the cross section of the pipe gallery. In the inner mold, the inner mold bracket is designed according to the minimum cross section of the mold, and the stress condition after the cross section is increased is considered in the design. Therefore, when the cross section size of the pipe gallery needs to be changed, the size of the inner mold bracket does not need to be changed.

[0036] A method for manufacturing a multi-cabin prefabricated pipe gallery, using a hydraulically adjustable multi-cabin prefabricated pipe gallery mold, comprises the following steps:

[0037] (1) According to the length of the prefabricated pipe gallery in the left and right directions, select and install the corresponding models of inner mold adjustment plates, end molds and bases. For example, a number of inner mold adjustment plates and end mold adjustment plates with lengths of 0.8m, 1.2m, 1.6m, 2m and 2.4m in the left and right directions are equipped to achieve the inner top mold lengths of 2.6m, 3m, 3.4m, 3.8m and 4.2m in the left and right directions. The bottom plate is replaced accordingly. For example, when the lengths of the inner mold adjustment plates and end mold adjustment plates of the natural gas tank, integrated tank and power tank are 0.8m, 2.4m and 0.8m respectively, a base with a length of 11.4m is equipped. At this time, the horizontal length of the pipe gallery is 10.8m. (2) After the mold assembly process of the base is completed, a positioning sheath is set on the base. The positioning pin is connected to the base by welding. The positioning pin helps to position the metal corrugated pipe after the steel cage is placed.

[0038] (3) Before placing the steel cage, the hydraulic drive device of the inner mold is controlled to make the inner mold retract inward, while the outer mold and the end mold are both in an outward extension state, providing space for the mold to facilitate the placement of the steel cage. The steel cage is placed by a gantry crane. After the steel cage is in place, embedded parts such as metal bellows, lightning protection parts and Hafen grooves are embedded in the mold, where the metal bellows is accurately positioned by the positioning pins on the base. After the embedded parts are installed, the hydraulic drive device of the inner mold is controlled to reset the inner mold, push the end mold to reset and fix the end mold. The end mold includes an end mold with a socket and a plug for combining prefabricated sections and an end mold with a rubber water stop groove for combining prefabricated sections and cast-in-place sections. The rubber water stop is generally reserved 4 cm outward. The above end molds are all reserved with a high-elastic sealant groove. After the end mold is reset, the outer mold is pushed to retract inward, and the side mold is fixed by a locking device. The attached vibrator is fixed to the middle and lower part of the outer wall by a buckle. At this point, a hydraulically adjustable multi-cabin prefabricated pipe gallery mold assembly is completed.

[0039] (4) Pouring concrete: After the mold is locked, check the working condition of the mold and the positioning of the steel reinforcement cage, and prepare to pour concrete. When pouring concrete, first pour one-third of the cross-sectional height of the concrete into the mold, and use the attached vibrator for vibration, and use the vibrating rod for manual vibration. Repeat the above process and complete the pouring of the remaining cross-sectional height of the concrete, which is poured in three times in total.

[0040] (5) After pouring, cure the poured concrete. Demold when the strength reaches 65% of the design strength, and use a special lifting tool to lift the precast pipe gallery when the strength reaches 75% of the design strength. When demolding, first unlock the locking device on the mold, pull out the outer mold and end mold of the mold outward, and start the hydraulic drive device of the inner mold to retract to complete demolding.

[0041] (6) After demolding, lift and transfer the precast pipe gallery to the curing area position to complete subsequent curing.

[0042] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. A hydraulically adjustable multi-compartment precast pipe gallery mold, comprising a base, an inner mold, and an outer mold. The inner mold and the outer mold are arranged on the base, and the inner mold is on the inner side of the outer mold, so that a precast cavity of the pipe gallery is formed between the base, the inner mold, and the outer mold. It is characterized in that: The number of inner molds is three groups. Each group of inner molds includes two inner side molds in the left - right direction and one inner top mold in the upper direction. Each group of inner molds also includes a detachable inner mold adjusting plate lapped in the middle of the inner top mold, so that the length of this group of inner molds in the left - right direction is adjustable; the outer mold includes outer side molds on the left and right sides and end molds on the front and back sides. The end mold also includes an end mold adjusting plate at the corresponding position of the inner mold adjusting plate; the number of inner mold adjusting plates is multiple, and multiple models are set corresponding to different lengths in the left - right direction; the number of bases is multiple, and multiple models are set corresponding to different lengths in the left - right direction; the number of end mold adjusting plates is multiple, and multiple models are set corresponding to different lengths in the left - right direction. The inner mold also includes an inner mold support and a hydraulic driving device; the inner mold support is placed on the base and supports the inner top mold from below; the inner side mold and the inner top mold are hinged, and a hydraulic driving device is installed between them, so that the inner side mold rotates relative to the inner top mold. Each inner top mold includes two base plate parts. The two base plate parts are located on the left and right sides and are respectively hinged to the two inner side molds. The inner mold adjusting plate is connected between the two base plate parts by a flange. The mold is a three - compartment split horizontal mold, which is divided into an upper - half mold for pouring the upper half of the culvert and a lower - half mold for pouring the lower half of the culvert. Both the upper - half culvert and the lower - half culvert are poured lying down.

2. A hydraulically adjustable multi-compartment precast pipe gallery mold according to claim 1, characterized in that: Guide rails are provided on both the outer side molds and the end molds, and pulleys are provided on the base. The guide rails cooperate with the pulleys, so that the two outer side molds slide relative to the base in the left - right direction, and the two end molds slide relative to the base in the front - back direction.

3. A hydraulic adjustable multi-compartment precast pipe gallery mold according to claim 1, characterized in that: It also includes an attached vibrator; both outer side molds are connected with attached vibrators by means of buckles.

4. A hydraulic adjustable multi-compartment precast pipe gallery mold according to claim 1, characterized in that: Positioning pins are provided on the base, and the positioning pins position the metal corrugated pipe.

5. A hydraulic adjustable multi-compartment precast pipe gallery mold according to claim 1, characterized in that: The end molds are divided into two categories according to their structures. The first category is the end mold with a socket and a spigot for the connection of precast segments of the culvert, and the second category is the end mold with a rubber water stop groove for the connection of precast segments and cast - in - place segments of the culvert; all end molds are reserved with high - elasticity sealant grooves.

6. A manufacturing method of a multi-compartment precast pipe gallery, using a hydraulic adjustable multi-compartment precast pipe gallery mold according to any one of claims 1 to 5, characterized in that: It includes the following steps: (1) Select and install the corresponding models of inner mold adjusting plates, end mold adjusting plates and bases according to the length of the precast culvert in the left - right direction. (2) Weld positioning pins on the base for positioning the metal corrugated pipe. (3) The inner mold retracts inward, and the outer mold expands outward. After providing space to lift in the steel reinforcement cage, install the metal corrugated pipe and embedded parts, and the inner mold and the outer mold are reset and locked. (4) Pour concrete. (5) After curing, the inner mold retracts inward, and the outer mold expands outward to complete demolding. (6) Move the culvert to the curing area to complete subsequent curing.

7. The manufacturing method of a multi-compartment precast pipe gallery according to claim 6, characterized in that: In step (4), first pour concrete with a height of one - third of the cross - section into the precast cavity, use the attached vibrator for vibration, and use a vibrating rod for manual vibration. Repeat this process and complete the pouring of the remaining cross - section height of concrete, which is poured in three times in total.

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