A prefabricated beam all-around steam curing device

Abstract

The present application relates to a kind of prefabricated beam all-around steam curing device including mobile steam curing shed, fixed steam curing shed and outer steam curing device;The mobile steam curing shed is at the construction front end of fixed steam curing shed, and is used to carry out preliminary mould steam curing to prefabricated beam;It includes stand, track, mobile frame, mobile steam curing shed and spray head;Fixed steam curing shed includes main structure, internal steam curing component and ground rail;Internal steam curing component includes double rope track, steam curing frame, steam curing seat, filter cover body, third spray head, collection core and collection head;The middle part of steam curing frame is provided with rope wheel, both sides of steam curing frame are fixed with steam curing seat, third spray head is fixedly arranged on the upper portion of steam curing seat, and filter cover body is arranged on the lower portion of steam curing seat.The present application is combined by mobile steam curing shed and fixed steam curing shed, realizes the all-around maintenance of prefabricated beam in steam curing process, improves steam curing efficiency and maintenance quality, so that steam can be evenly distributed in the inside and outside of prefabricated beam, effectively solve the problem of uneven steam curing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precast beam manufacturing, in particular to a full-range steam curing device for precast beams. BACKGROUND

[0002] A precast beam, also known as a large precast concrete beam, is one of the commonly used structural components in engineering construction. It is manufactured in a standardized and normative manner in a factory and then transported to the construction site for installation. A precast box beam steam curing device is a device used for the curing of precast box beams. It uses steam heating to heat the interior of the precast box beam to achieve the purpose of curing.

[0003] Currently, fixed steam curing sheds are commonly used for steam curing, and some use mobile steam curing sheds. For example, patent number 202121473374.7 discloses an adjustable steam curing shed. The adjustable steam curing shed includes side wall columns that form the two sides of the shed. The side wall columns are arranged in multiple groups along the length of the shed, and the spacing between the side wall columns on the same side can be adjusted. The upper ends of the side wall columns are provided with shed top arc rods, and the ends of the shed top arc rods on the upper ends of the side wall columns on both sides form a telescopic connection.

[0004] However, the internal steam curing structure of the precast beam in the prior art is relatively simple. The water pipes and nozzles are directly arranged inside the precast beam. During the steam curing of the precast beam, the moisture generated during steam curing will be retained inside the precast beam, causing the bottom of the precast beam to be soaked with water for a long time, resulting in uneven curing of the precast beam, and the following disadvantages:

[0005] Uneven strength: If the steam curing is uneven, it may cause different hardening degrees inside the concrete, resulting in inconsistent strength of different parts of the precast beam. The parts with lower strength are more likely to be damaged when bearing load, affecting the safety and stability of the entire structure.

[0006] Deformation and cracking: Uneven steam curing may also cause uneven shrinkage and expansion of the precast beam, leading to deformation and cracking. These deformations and cracks not only affect the appearance quality of the beam, but also reduce its carrying capacity, and even cause structural failure.

[0007] Reduced durability: Uneven steam curing affects the compactness and impermeability of the concrete, making the precast beam more susceptible to moisture, oxygen, and other harmful substances. Over time, the concrete may experience carbonation, steel corrosion, and other durability issues, shortening the service life of the precast beam.

[0008] Safety hazard: uneven strength, deformation cracking and durability reduction caused by uneven steam curing may have adverse effects on the safety performance of the precast beam. In extreme cases, it may cause serious accidents such as fracture or collapse of the precast beam during service, threatening people's life and property safety.

[0009] Therefore, it is necessary to study a kind of precast beam all-around steam curing device. SUMMARY

[0010] Therefore, the purpose of the present application is to provide a kind of precast beam all-around steam curing device, effectively solve the problem of uneven steam curing of precast beam structure caused by the fact that steam curing water gathers at the bottom of precast beam during internal steam curing process.

[0011] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: a kind of precast beam all-around steam curing device, including mobile steam curing shed, fixed steam curing shed and external steam curing device;The mobile steam curing shed is located at the front end of the fixed steam curing shed construction, and is used for the preliminary mold steam curing of precast beam;It includes stand, track, moving frame, mobile steam curing shed and spray head;The stand is distributed on both sides, and the track is arranged on the inner side of the two stands, and the moving frame is arranged on the track on both sides through the moving wheel;The mobile steam curing shed is fixed on the moving frame, and the first spray head is arranged on the inner side of the mobile steam curing shed, and the first spray head is communicated with the external steam boiler through the water pipe;

[0012] The fixed steam curing shed includes main structure, internal steam curing assembly and ground rail;The inner wall of the main structure is provided with second spray head towards the inside on both sides, and the second spray head is used for curing the outside of the precast beam, and the ground rail is arranged in the middle region of the main structure and carries the shipping seat of the moving precast beam;

[0013] The internal steam curing assembly includes double rope rail, steam curing frame, steam curing seat, filter cover, third spray head, collection core and collection head;The middle part of the steam curing frame is provided with a rope wheel, and a support frame is provided on both sides of the precast beam, and the double rope rail is arranged on the support frame, so that the double rope rail passes through the inside of the precast beam and provides a moving support point for the rope wheel;The steam curing seat is fixed on both sides of the steam curing frame, the third spray head is fixedly arranged on the upper part of the steam curing seat, the filter cover is arranged on the lower part of the steam curing seat, and the filter cover and the inside of the steam curing seat have a collection area, the collection core is arranged on the steam curing seat and extends into the collection area, and the collection head is arranged on the steam curing seat and extends into the collection area;A plurality of steam curing frames are arranged side by side, and the adjacent collection core and steam curing seat are linearly connected by using the corresponding collection pipe and steam curing pipe, wherein the steam curing pipe is connected with the external steam boiler, and the collection pipe is connected with the pump.

[0014] Further, the rope wheel is arranged on one side of the support frame, one side of the double rope rail is wound on the winding roller, and the other side is fixed on the support frame on the other side.

[0015] Further, the upper center of the steam curing seat is provided with a mounting hole, the bottom of the third spray head is screwed in the mounting hole through a mounting head, and the two sides of the third spray head lead out a butt joint for mounting a soft steam curing pipe.

[0016] Further, the collecting core is fixed in the steam curing seat, a cavity exists in the collecting core, the bottom of the collecting core is provided with a base, a collecting area is formed between the two sides of the base and the filter cover, the middle of the filter cover is provided with a center hole for avoiding the base, collecting heads are distributed on the two sides of the base, and the collecting core leads out a collecting joint outward.

[0017] Further, the lower part of the collecting core leads out a reinforcing base for reinforcing the collecting head, and the lower part of the collecting head is provided with a filter head.

[0018] Further, the upper part of the filter cover is provided with a connecting part with internal threads, the connecting part is screwed on the outside of the steam curing seat, and the lower part is a filter part in a mesh shape.

[0019] Further, the two sides of the steam curing frame are fixed with clamping sleeves, the clamping sleeves are fixed on the outside of the steam curing seat, the steam curing frame is in a symmetrical trapezoidal structure, the middle part is provided with a middle reinforcing plate, and the rope wheels are located on the two sides of the middle reinforcing plate.

[0020] Further, the middle part of the steam curing frame is further provided with a fourth spray head.

[0021] Further, the lower part of the steam curing frame is provided with an adjusting base, the adjusting base can move up and down along the steam curing frame, and the lower part of the adjusting base is provided with a moving wheel.

[0022] Further, the two sides of the middle reinforcing plate are provided with holders, and the outer sides are provided with holders adapted to the holders.

[0023] The beneficial effects of the above technical solution are that the precast beam steam curing is carried out three times, the first time is preliminary steam curing. After the concrete is poured, a movable steam curing shed is used for mold steam curing to accelerate the improvement of the initial strength of the concrete, so that the requirement of rapid form removal is met. The second and third times of steam curing are indoor curing in a fixed intelligent temperature control steam curing room, the naked beam is sent to the steam curing room in turn through a moving base to carry out relay steam curing; when the production requirement is higher, the next high-temperature steam curing room is preheated to connect with the preliminary curing, the naked beam is sent to the preheated high-temperature steam curing room for curing after the naked beam is cured to a certain strength or a certain time; meanwhile, the rising and falling temperature rates of the steam curing room are controlled to further improve the strength of the concrete to the design strength. The iterative intelligent steam curing system of the precast beam can accelerate the rapid formation of the strength of the concrete, effectively shorten the curing time, and reduce the steam curing energy consumption.

[0024] In order to ensure the steaming effect of the fixed steaming chamber, ensure the uniformity of the overall curing of the precast beam, and improve the quality of the precast beam, the present invention provides a structure inside the precast beam that can drain the accumulated water in time. The structure has multiple steaming parts connected in series through a pipe body, and forms multiple spraying and water collection points inside the precast beam. The collected water can be collected and discharged while spraying, thereby avoiding excessive water accumulation at the bottom of the precast beam.

[0025] During the implementation process, the present invention adopts a double rope track as a mobile basis. This structure is easy to store and unfold, and can easily form a track foundation inside the prefabricated beam. The steaming rack is arranged on the double rope track, so that the steaming rack can be quickly and spaced apart in the prefabricated beam, thereby improving construction efficiency.

[0026] Structurally, the accumulated water of the present invention is filtered by the filter cover and then enters the collection area, thus preventing impurities from entering the area. The relative height of the filter cover relative to the steaming and curing seat is adjustable, thereby realizing the adjustment of the collection height of the water collection point.

[0027] Therefore, the present invention has a novel structure. Through the combination of a mobile steaming shed and a fixed steaming shed, all-round curing of prefabricated beams during the steaming process is achieved, and the steaming efficiency and curing quality are improved. The design of the internal steaming components enables the steam to be evenly distributed inside and outside the prefabricated beam, avoiding the problem of uneven steaming, achieving all-round curing of the prefabricated beams during the steaming process, and improving the quality and steaming efficiency of the prefabricated beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the implementation structure of the present invention;

[0029] Figure 2 A schematic diagram of the internal steaming component configuration;

[0030] Figure 3 for Figure 2 Schematic diagram of the main structure;

[0031] Figure 4 for Figure 2 A side structural diagram of

[0032] Figure 5 This is a schematic diagram of the internal structure of the steaming seat;

[0033] Figure 6 It is a structural schematic diagram of a single steaming rack;

[0034] Figure 7 A schematic diagram of the further implementation structure of the steaming rack;

[0035] Figure 8 for Figure 6 Schematic diagram of the top view structure;

[0036] Figure 9 Figure 1 is a schematic view of the side structure of the present application; Figure 6 Figure 2 is a schematic view of the side structure of the present application;

[0037] Figure 10 Figure 3 is a schematic view of the principle of the solar-steam combined heating group.

[0038] Figure 1 is a schematic view of the side structure of the present application; Figure 2 is a schematic view of the side structure of the present application; Figure 3 is a schematic view of the principle of the solar-steam combined heating group. DETAILED DESCRIPTION

[0039] The present application will be further described in detail below in combination with the drawings and specific embodiments:

[0040] Embodiment 1: The present embodiment aims to provide a full-range precast beam curing device, which is mainly used for curing precast beams. In the production process of precast beams, curing is a key process step, which directly affects the quality and performance of precast beams. Traditional curing devices often have problems such as uneven curing and poor curing effect, which leads to unstable quality of precast beams and affects engineering safety. Based on this, the present embodiment provides a full-range precast beam curing device, which realizes full-range curing of precast beams during the curing process and improves the quality and curing efficiency of precast beams.

[0041] As shown in Figure 1 A full-range precast beam curing device, which includes a mobile curing shed 4, a fixed curing shed 6, and an internal curing assembly. The mobile curing shed 4 is located at the front end of the fixed curing shed 6 and is used for preliminary mold-curing of precast beams. As shown in Figure 1 In the present embodiment, according to the production process of precast beams, mold-curing is performed in the pouring curing area, and internal and external synchronous curing is performed in the curing area, so that curing can be performed before the precast beam concrete is demolded, accelerating the curing intervention time and effectively reducing the curing period. One-time and two-time fixed curing chamber curing makes the beam strength realize progressive growth in time, and at the same time, effectively alleviates the problem of insufficient space, queuing and waiting for curing after precast beam pouring is completed, greatly shortens the curing time.

[0042] In order to achieve this object, the mobile steam curing shed 4 in the embodiment comprises a stand 1, a track 2, a moving frame 3, a steam curing shed and a spray head; the stand 1 is distributed on both sides, and the track 2 is arranged on the inner side of the two stands 1, and the moving frame 3 is correspondingly arranged on the track 2 on both sides through the moving wheel; the mobile steam curing shed 4 is fixed on the moving frame 3, and the first spray head 5 is arranged on the inner side of the mobile steam curing shed 4, and the first spray head 5 is communicated with the external steam boiler through the water pipe; the structure provides a mobile steam curing structure, and the preliminary steam curing of the precast beam is carried out.

[0043] The fixed steam curing shed 6 is arranged in the steam curing area, and the steam curing area is located at the rear side of the pouring and steam curing, and in the specific structure, the fixed steam curing shed 6 comprises a main body structure, an internal steam curing assembly and a ground rail; as shown in Figure 2 , the main body structure is in a U-shaped structure, the second spray head 7 is arranged on the inner wall of the main body structure, the second spray head 7 is used for curing the outside of the precast beam, and the ground rail 8 is arranged in the middle region of the main body structure and carries the shipping seat 9 of the moving precast beam.

[0044] As shown in Figures 2-4 , the internal steam curing assembly comprises a double rope track 13, a steam curing frame 11, a steam curing seat 14, a filter cover 19, a third spray head 16, a collection core 21 and a collection head 22; the middle part of the steam curing frame 11 is provided with a rope wheel 12, and a support frame is provided on both sides of the precast beam 10, the both ends of the double rope track 13 are arranged on the support frame, so that the double rope track 13 passes through the inside of the precast beam 10 and provides a moving support point for the rope wheel; in order to facilitate storage, the rope wheel is arranged on the support frame on one side, one side of the double rope track is wound on the winding roller, and the other side is fixed on the support frame on the opposite side, so that the track rope as the track can be quickly unfolded and wound on the winding roller.

[0045] In the specific structure, the rope wheel 12 is a wheel body structure with a groove, which is fixed on both sides of the middle part of the precast beam 10, in order to ensure that the structure is symmetrical, centered, stable during moving and storage, the steam curing frame 11 is arranged in a hollow trapezoidal structure in the embodiment, the clamping sleeve 15 is fixed on both sides of the steam curing frame 11, the clamping sleeve 15 is fixedly sleeved on the outside of the steam curing seat 14, the steam curing frame 11 is a symmetrical trapezoidal structure, the middle reinforcing plate 20 is arranged in the middle part of the steam curing frame 11, and the rope wheel is arranged on both sides of the middle reinforcing plate 20, and the middle reinforcing plate 20 can ensure the stability and strength of the steam curing frame.

[0046] As shown in Figure 5As shown in the figure, the two sides of the steaming rack 11 are fixed with steaming seats 14, the upper part of the steaming seat 14 is fixedly provided with a third nozzle 16, the upper center of the steaming seat 14 is provided with a mounting hole 162, the bottom of the third nozzle 16 is screwed into the mounting hole 162 through a mounting head 161, and the two sides of the third nozzle 16 lead out a butt joint 163 for installing a soft steaming pipe. Through this structure, the installation and disassembly of the third nozzle 16 can be facilitated, and the overall structure can be assembled.

[0047] A filter cover 19 is arranged at the lower part of the steaming seat 14, and the filter cover 19 and the steaming seat 14 have a collection area inside. A collection core 21 is arranged on the steaming seat 14 and extends into the collection area with a collection head 22. By arranging a plurality of steaming racks 11 side by side and linearly connecting adjacent collection cores 21 and steaming seats 14 by using corresponding collection pipes 18 and steaming pipes 17, wherein the steaming pipe 17 is connected to an external steam boiler, and the collection pipe 18 is connected to a pump, the pump is a negative pressure pump and provides suction force, the collection heads 22 at the ends are under negative pressure by connecting each collection core 21 through the collection pipe.

[0048] As shown in the figure, Figure 7 As shown in the figure, in a further embodiment, a fourth nozzle can be arranged in the middle of the steaming rack 11. The fourth nozzle is connected to the third nozzle 16 on both sides through a pipeline and is connected to an external steam boiler, thereby providing steaming points in the middle and on both sides of the precast beam. The steaming pipes on both sides and the steaming pipe in the middle can be connected to a main pipe, and the main pipe is connected to the steaming boiler.

[0049] In this embodiment, the pipeline connecting the steaming seat 14 and the collection core 21 is a flexible PVC steel wire composite pipeline, which has certain flexibility and strength and can adaptively accommodate deformation or be disassembled in sections when stored. The steam boiler uses a biomass energy boiler for steam curing. The biomass energy steam boiler has a wide range of applications, is green and environmentally friendly, has a clean process with low pollution, mainly burns biomass particles, and uses sawdust and straw as fuel, so the cost is relatively low and the economy is relatively high. At the same time, solar energy is used to raise the water temperature, which saves fuel combustion and reduces costs.

[0050] The steam pipeline is transmitted from the boiler to the curing shed. The main steam pipe is provided with a pressure regulating valve, a throttle valve, an electrically operated mechanical regulator for adjusting the steam flow, and a stop valve as a total on-off valve. Each auxiliary pipe is a stainless steel pipe, and a steam injection hole with a diameter of 2-3 mm is arranged every 2 m in the steaming chamber. When arranged, the auxiliary pipe is placed longitudinally under the bottom plate at the steaming shed wall plate. The pipeline of the movable steaming shed 4 is arranged in the same way under the wall plate, and a hose connected to the external main pipe is arranged at the end of the shed chamber to steam the concrete products at the same time.

[0051] Thus, in use, the precast beam is first moved into position, then the support frames are erected on both sides of the precast beam, the steam curing frame 11 is arranged at the front end, the double rope track is passed through all the steam curing frames 11 and led out from the middle of the precast beam to the other side and fixed, after the double rope track is arranged, the steam curing frames 11 are moved to each point one by one, of course, the position points can be arranged on the double rope track, the steam curing frames 11 are arranged in front of the position points, then the height of the double rope track and the pumping speed are adjusted, so that the filter cover 19 touches the ground or is at a certain height, the steam curing boiler is started, and the generated steam curing water will accumulate at the bottom of the precast beam, then the negative pressure pump is started to timely pump away the accumulated water, thereby avoiding the problem of uneven maintenance caused by the accumulated water in the precast beam.

[0052] In the embodiment 2, the structure of the collection core 21 is further described.

[0053] As shown in the embodiment, the collection core 21 is fixed in the steam curing seat 14, and a cavity exists in the collection core 21. The bottom of the collection core 21 is provided with a base 24, and a collection area is formed between the two sides of the base 24 and the filter cover 19. The middle part of the filter cover 19 is provided with a center hole for avoiding the base. The collection heads 22 are distributed on both sides of the base, and the collection core 21 is provided with a collection connector which is led out outward. Figure 5 The lower part of the collection core 21 is provided with a reinforcing seat for reinforcing the collection heads 22. The lower part of the collection head 22 is provided with a filter head 23, thereby improving the structural stability of the collection head 22.

[0054] In the embodiment, the base is used for ground support, so that the filter cover 19 is higher than the ground, thereby avoiding that the filter cover 19 bears the whole load, and at the same time, the filter cover 19 is kept at a certain distance from the ground. For example, when placed, the filter cover 19 is higher than 2 mm, and the reinforcing seat provides a support point.

[0055] Further, the upper part of the filter cover 19 is provided with a connecting part 191 which is internally threaded. The connecting part 191 is threadedly connected to the outer side of the steam curing seat 14, and the lower part of the filter cover 19 is a filter part 192 which is net-shaped. In combination with the base structure, the position of the filter cover 19 can be quickly adjusted through the threaded adjusting connection structure, so as to adjust the depth of the accumulated water filtering.

[0056] In the embodiment 3, the structure of the steam curing frame 11 is further described.

[0057] As shown in the embodiment, the lower part of the steam curing frame 11 is provided with an adjusting seat 26 which can move up and down along the steam curing frame 11. The lower part of the adjusting seat is provided with a moving wheel 27. The two sides of the reinforcing plate are provided with a support seat 28, and the outer side is provided with a support frame 29 which is adapted to the support seat. The support frame structure is used for storing each steam curing frame on the support frame 29 in the storage state.

[0058] Figure 7 The lower part of the steam curing frame 11 is provided with an adjusting seat 26 which can move up and down along the steam curing frame 11. The lower part of the adjusting seat is provided with a moving wheel 27. The two sides of the reinforcing plate are provided with a support seat 28, and the outer side is provided with a support frame 29 which is adapted to the support seat. The support frame structure is used for storing each steam curing frame on the support frame 29 in the storage state. ​

[0059] In this embodiment, an adjustment seat 26 and a moving wheel 27 structure are provided to enable the steaming rack 11 structure to move on the ground, and to adjust the height of the filter cover 19 from the ground when in use.

[0060] Example 4: This example further illustrates the steam-curing boiler structure.

[0061] like Figure 10 As shown in , this embodiment utilizes a curing chamber and a combined solar-steam heating system. The curing chamber primarily consists of insulated walls and internal steam piping. The combined solar-steam heating system includes solar heating tubes, steam piping, temperature and humidity sensors within the curing chamber, and a temperature and humidity controller and solenoid valve located outdoors. These control the steam temperature, assessing the relationship between the temperature curve and the flow of precast beams, and ensuring steam curing efficiency. Combined solar-steam curing automatically relays heating between solar and steam, effectively utilizing solar energy, significantly reducing heating fuel, and significantly lowering precast beam production costs.

[0062] The temperature sensor is mainly used to measure the steam temperature in the curing shed. When the temperature is lower than the design value, the temperature controller adjusts the combustion volume of the outdoor boiler to make the steam in the pipeline reach the set temperature.

[0063] The embodiments of the present invention described above do not limit the scope of protection of the present invention. The basic concept of the present invention is to achieve all-round curing of precast beams during the steaming process through the combination of mobile and fixed steaming sheds, improving steaming efficiency and curing quality. The design of the internal steaming components ensures that steam is evenly distributed inside and outside the precast beams, avoiding the problem of uneven steaming. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims.

Claims

1. A device for all-around steam curing of precast beams, characterized in that: The utility model provides a prefabricated beam steam curing device, which comprises a mobile steam curing shed, a fixed steam curing shed and an external steam curing device. The fixed steam curing shed comprises a main structure, an internal steam curing assembly and a ground rail. The internal steam curing assembly comprises a double-rope rail, a steam curing frame, a steam curing seat, a filter cover, a third nozzle, a collection core and a collection head.

2. The precast beam all-around steam curing device according to claim 1, characterized in that: The double-rope rail is wound on the winding roller on one side of the support frame and is fixed on the support frame on the other side.

3. The precast beam all-around steam curing device according to claim 1, characterized in that: The upper center of the steam curing seat is provided with a mounting hole, and the bottom of the third nozzle is screw-mounted in the mounting hole through a mounting head.

4. The precast beam all-around steam curing device of claim 1, wherein: The collection core is fixed in the steam curing seat and has a cavity therein.

5. The precast beam all-around steam curing device according to claim 4, characterized in that: The bottom of the collection core is provided with a base, and the collection area is formed between the two sides of the base and the filter cover.

6. The precast beam all-around steam curing device of claim 4, wherein: The middle part of the filter cover is provided with a center hole for avoiding the base.

7. The precast beam all-around steam curing device of claim 1, wherein: The collection head is distributed on the two sides of the base, and the collection core has a collection connector led out outward.

8. The precast beam omnibearing steam curing device according to claim 7, characterized in that: The lower part of the collection head is provided with a filter head.

9. The precast beam omnibearing steam curing device of claim 7, wherein: The upper part of the filter cover is provided with a connection part with internal threads.

10. The precast beam omnibearing steam curing device of claim 7, wherein: The lower part of the filter cover is a mesh filter part. The two sides of the steam curing frame are fixed with clamping sleeves. The middle part of the steam curing frame is also provided with a fourth nozzle. The lower part of the steam curing frame is provided with an adjusting seat. The two sides of the middle reinforcing plate are provided with supporting seats, and the outer side is provided with a supporting frame matched with the supporting seat. The supporting seat is fixedly arranged on the supporting frame.

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