A precast component curing rack

Abstract

This invention relates to a precast component curing frame, comprising uprights and multiple sets of vertically arranged crossbeams on the uprights; a row of rollers is installed along the length of the lowest crossbeam, which is used to drive the pallet on it to move horizontally in and out; a row of "L"-shaped supports are hinged along the length of the remaining crossbeams, and two rows of "L"-shaped supports at the same level are used to place the pallets; a lifting assembly is used to lift the pallets for vertical transfer, and the upper surface of the pallets is used to place the precast components; the output end of the steam generator is connected to the inner cavity of the uprights and crossbeams through a steam pipe; the multi-layered precast components are accommodated within the folding curing shed, and the vertical and horizontal steam inlets on the uprights and crossbeams facilitate the uniform use of steam to cure the multi-layered vertically arranged precast components, solving the problem of high steam loss in existing precast component curing; the multi-layered arrangement of precast components helps to improve curing efficiency.

Description

Technical Field

[0001] This invention relates to a precast component curing frame, belonging to the field of precast component technology. Background Technology

[0002] With the continuous improvement of the level of industrialization in the construction industry, precast concrete components are widely used in various engineering constructions. In the factory production of precast components, in order to shorten curing time, accelerate mold turnover, and improve production efficiency, PC factories adopt steam curing technology. Steam curing can rapidly improve the early strength of concrete, reaching the strength requirements for demolding and lifting precast components, thereby accelerating mold turnover and improving factory efficiency.

[0003] Currently, most PC factories use three-dimensional curing kilns for the curing of precast components. For wall panels, this method uses a mold platform for transfer. If the precast components are not distributed properly in the mold platform, especially when producing small, non-standard components, it can easily lead to empty space on the mold platform. In addition, the mold platform itself has a large area and requires a large amount of steam for curing, resulting in energy waste. For beams and columns, a membrane-covered steam curing method is used, in which geotextile is completely covered on the outside of the mold. This method results in a large amount of steam loss and uneven steam coverage, causing one end to overheat and the other end to be insufficiently cured. Moreover, the membrane covering operation is cumbersome, difficult to fix, and incomplete coverage can easily lead to insufficient concrete strength and color differences in appearance.

[0004] For example, CN213055316U is a curing device for precast components. By setting up drainage ditches and drainage pipes at the bottom of the steam curing chamber, it can promptly drain the water generated during the curing of precast concrete components, effectively reducing the safety hazards caused by slippery ground due to water accumulation, and also avoiding the impact of water accumulation on the quality of precast concrete components.

[0005] However, this solution cannot provide quick and convenient maintenance for small or non-standard components, resulting in most such components having to be maintained on outdoor or indoor formwork, which leads to poor maintenance results and takes up a lot of space; at the same time, the maintenance efficiency is low with only one layer. Summary of the Invention

[0006] The purpose of this invention is to provide a precast component curing frame to solve the problems mentioned in the background art.

[0007] The technical solution of the present invention is as follows:

[0008] A precast component curing frame, comprising:

[0009] Upright poles and multiple sets of vertically arranged crossbeams mounted on the upright poles;

[0010] A row of rollers is installed along the length of the bottom crossbeam, which is used to move the pallet on it horizontally in and out; a row of "L"-shaped supports is hinged along the length of the other crossbeams, and two rows of "L"-shaped supports at the same level are used to place the pallet.

[0011] A lifting assembly for vertically transferring a pallet between two rows of rollers on the upper surface and two rows of supports on each crossbeam, the upper surface of which is used to place prefabricated components.

[0012] A steam generator, the output end of which is connected to the inner cavity of the upright and crossbeam via a steam pipe;

[0013] The upright has several vertically arranged vertical steam inlets, and the crossbeam has several horizontally arranged horizontal steam inlets.

[0014] A folding curing shed, which is folded or unfolded to cover or expose components on the uprights and beams.

[0015] Preferably, the "L"-shaped support is kept in a normal state by a torsion spring, in which case the tray can pass through the support unidirectionally from bottom to top.

[0016] Preferably, the tray includes a fixed vertical bar, multiple sets of hollow horizontal bars fixedly arranged along the length of the fixed vertical bar, and movable vertical bars distributed on both sides of the fixed vertical bar. The two movable vertical bars move closer to or further away from the fixed vertical bar simultaneously through an adjustment assembly. The movable vertical bars are used to cooperate with the "L"-shaped support to place the tray.

[0017] Preferably, the adjusting assembly includes a rotating device, an active turntable mounted on the output end of the rotating device, a driven turntable mounted on a fixed vertical rod, and a connecting rod. The two ends of the connecting rod are respectively connected to the fixed vertical rod and the movable vertical rod, and the active turntable and the driven turntable are connected together in abutment.

[0018] Preferably, the lifting assembly includes a hydraulic telescopic cylinder and a bracket installed at the output end of the hydraulic telescopic cylinder. The bracket is recessed in the middle to accommodate the adjusting assembly. The rotating device is installed in the middle of the bracket. The hydraulic telescopic cylinder extends and retracts to drive the active turntable to approach and abut against the driven turntable, forming an integral part or separating them.

[0019] Preferably, the hollow crossbar has transverse steam ports on its upper and lower / left and right sides along its length, and the hollow crossbar and the movable vertical bar are connected by a flexible hose.

[0020] Preferably, the support is hollow inside and connected to the inner cavity of the crossbeam through an air pipe. The support has an air outlet on the side that supports the movable vertical rod, and the movable vertical rod has an air inlet along its length. When the movable vertical rod is placed on the support, the air outlet and the air inlet correspond one-to-one.

[0021] Preferably, the air outlet of the support is opened and closed by a movable seat, and the movable seat is normally closed by an elastic element. The movable seat is provided with an air channel, and when the movable vertical rod is placed on the support, pressing the movable seat makes the air channel communicate with the inside of the support.

[0022] Preferably, the steam generator is a cross-flow chamber fully premixed steam generator.

[0023] Preferably, the rollers in the same row are connected by a drive belt assembly.

[0024] The present invention has the following beneficial effects:

[0025] The folding curing shed accommodates multiple layers of precast components arranged vertically. The vertical and horizontal steam inlets on the uprights and beams facilitate the uniform use of steam to cure the multiple layers of vertically arranged precast components, solving the problem of high steam loss in the existing curing of precast components. The multi-layer arrangement of precast components also improves curing efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the unfolded structure of the folding maintenance shed of the present invention;

[0028] Figure 3 This is a front view of the assembly of the upright and crossbeam of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the pallet placed on the support according to the present invention;

[0030] Figure 5 This is a schematic diagram of the tray structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the lifting component structure of the present invention;

[0032] Figure 7 This is a schematic diagram showing the fit between the support and the movable seat of the air outlet of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the upright and crossbeam of the present invention.

[0034] The reference numerals in the figure are as follows:

[0035] 1. Upright pole; 2. Horizontal beam; 3. Support; 31. Air pipe; 32. Movable seat; 321. Air passage; 33. Elastic component; 4. Transmission belt assembly; 5. Motor; 6. Lifting assembly; 61. Hydraulic telescopic cylinder; 62. Trailer; 63. Rotating device; 64. Active turntable; 8. Roller; 9. Tray; 91. Fixed vertical pole; 92. Hollow horizontal bar; 921. Horizontal steam port; 93. Movable vertical pole; 931. Air inlet; 94. Driven turntable; 95. Connecting rod; 11. Vertical steam port; 12. Horizontal steam port; 13. Folding curing shed; 131. Folding door; 14. Steam generator; 15. Steam pipe; 16. Monitoring and controller; 17. Precast components. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0037] Example: Figure 1-8 As shown:

[0038] Steam generator 14 is a fully premixed steam generator with a cross-flow chamber; precast components 17 are various non-standard, small-scale concrete products. Folding curing shed 13 is made of galvanized square steel and pearl cotton for heat preservation and moisture retention.

[0039] Four uprights 1 are fixed vertically to the ground. The interior of each upright is hollow. The output end of the steam generator 14 is connected to the interior of the four uprights 1 through a steam pipe 15. Multiple vertically arranged crossbeams 2 are fixedly connected between two uprights 1 on the same side. The crossbeams 2 are hollow and connected to the interior of the uprights 1. Multiple sets of vertical steam ports 11 are opened on the side wall of the uprights 1 along the vertical / length direction. The steam inside the uprights 1 is horizontally discharged through the vertical steam ports 11 and blown towards the precast component 17. Multiple sets of horizontal steam ports 12 are opened on the upper and lower sides of the crossbeams 2 along the length / horizontal direction. The steam inside the crossbeams 2 is vertically discharged through the horizontal steam ports 12 and blown towards the precast component 17.

[0040] It also includes a folding maintenance shed 13, which has an opening on one side and can be opened or closed through a folding door 131, allowing for easy access during maintenance. Figure 2 As shown, when the folding curing shed 13 is unfolded and the folding door 131 is closed, the uprights 1, the crossbeams 2, and the multi-layer prefabricated components 17 are inside the closed folding curing shed 13. The folding door 131 can be opened to store the folding curing shed 13, and the folding curing shed 13 can be folded down, at which point the uprights 1, the crossbeams 2, and the multi-layer prefabricated components 17 are exposed.

[0041] like Figure 3 , 6As shown, the lifting assembly 6 includes a hydraulic telescopic cylinder 61 and a bracket 62 installed on the upward output end of the hydraulic telescopic cylinder 61. A row of rollers 8 is rotatably installed on the lowest set of crossbeams 2 on the same side along its length direction, and a transmission belt assembly 4 is installed on the lowest crossbeam 2. The transmission belt assembly 4 is driven by a motor 5, and the transmission belt assembly 4 drives the row of rollers 8 on the same side to rotate synchronously. The tray 9 is used to be placed on the two rows of rollers 8, and the rollers 8 roll to drive the tray 9 on them to move horizontally in and out.

[0042] A row of L-shaped supports 3 are hinged along the length of the other crossbeams 2 located above the roller 8. The L-shaped supports 3 are symmetrically arranged on the left and right sides. The L-shaped supports 3 are held in a normal state by torsion springs. Figure 3 , 4 As shown, the support 3 is hollow inside and is connected to the inside of the crossbeam 2 through the air pipe 31;

[0043] like Figure 7 As shown, the support 3 has an air outlet on one side of the movable vertical rod 93 for placing the tray 9. A movable seat 32 is linearly slidably connected to the air outlet of the movable vertical rod 93. An elastic element 33 connects the movable seat 32 and the support 3. The elastic force of the elastic element 33 pushes the movable seat 32 to the closed state of the air outlet of the movable vertical rod 93 under normal conditions. At this time, the air passage 321 in the movable seat 32 is blocked from the inner cavity of the support 3. Figure 7 As shown; the upper surface area of ​​the movable seat 32 is larger than the air inlet 931 of the movable vertical rod 93, to prevent the movable seat 32 from being inserted into the air inlet 931 and affecting the horizontal movement of the movable vertical rod 93 from detaching from the upper surface of the support 3.

[0044] like Figure 5 , 8 As shown, the tray 9 includes fixed vertical bars 91, hollow horizontal bars 92, and movable vertical bars 93. Multiple sets of hollow horizontal bars 92 are arranged in a straight line at equal intervals. The middle of the multiple sets of hollow horizontal bars 92 is fixedly connected by the fixed vertical bars 91. Two sets of movable vertical bars 93 are located on the left and right sides of the fixed vertical bars 91. Horizontal steam inlets 921 are opened on the upper and lower / front and back sides of the hollow horizontal bars 92 along their length. The movable vertical bars 93 slide linearly relative to the hollow horizontal bars 92, moving closer to or away from the fixed vertical bars 91. Multiple air inlets 931 are opened on the bottom wall of the movable vertical bars 93 along their length. The inner cavity of the movable vertical bars 93 is connected to the inner cavity of the multiple sets of hollow horizontal bars 92 through a flexible hose. Figure 5 The tray 9 shown facilitates the passage of steam.

[0045] The support 3 is positioned between two adjacent hollow horizontal bars 92 to achieve a misalignment. The width formed by the two movable vertical bars 93 is smaller than the distance between the two horizontal beams 2 at the same level, so that the hollow horizontal bars 92 will not interfere with the support 3 or the horizontal beams 2 during the vertical lifting and lowering process.

[0046] like Figure 5 , 6 As shown, the adjustable distance assembly includes a rotating device 63, an active turntable 64 mounted on the output end of the rotating device 63, a driven turntable 94 rotatably mounted on the bottom wall of the fixed vertical rod 91, and connecting rods 95. The two ends of the connecting rods 95 are hinged to the fixed vertical rod 91 and the movable vertical rod 93, respectively. The rotating device 63 is mounted in the middle of the bracket 62. The rotation of the driven turntable 94, via the two connecting rods 95, causes the movable vertical rod 93 to move linearly towards or away from the fixed vertical rod 91. The rotation angle of the driven turntable 94 on the bottom wall of the fixed vertical rod 91 is limited to a certain range.

[0047] like Figure 6 As shown, the lifting assembly 6 includes multiple hydraulic telescopic cylinders 61 buried underground. The upward-facing output ends of the multiple hydraulic telescopic cylinders 61 are jointly mounted on a bracket 62. The space formed by the downward-recessed middle part of the bracket 62 is used for the movement of the driven turntable 94, the driving turntable 64, and the two connecting rods 95.

[0048] Working principle before maintenance:

[0049] The precast component 17 to be steam cured is placed on the upper surface of the tray 9. The tray 9 is placed on the upper surface of the two rows of rollers 8. The monitoring controller 16 drives the motor 5 to rotate, thereby driving the two rows of rollers 8 to roll, thus moving the outer tray 9 horizontally and precisely extending it into the set position through the limiting component. Then, the monitoring controller 16 controls the hydraulic telescopic cylinder 61 to extend vertically, so that the bracket 62 abuts against the lower surface of the tray 9. Then, the hydraulic telescopic cylinder 61 continues to extend, driving the tray 9 to rise vertically. During this process, the movable vertical rods 93 on the left and right sides of the tray 9 can pass over the "L"-shaped support 3 from bottom to top in one direction. Then, the hydraulic telescopic cylinder 61 is controlled to lower the movable vertical rods 93 on the left and right sides of the tray 9 to abut against the upper surface of the two rows of supports 3 placed on the same horizontal plane. At this time, the air inlet 931 opened on the lower surface of the movable vertical rod 93 is aligned with the air inlet of the row of supports 3.

[0050] At this time, since the movable vertical rod 93 is placed on the upper surface of the support 3 and presses down on the movable seat 32, the upper end of the air channel 321 in the movable seat 32 is connected to the air inlet 931. The movable seat 32 moves down and compresses the elastic element 33, so that the lower end of the air channel 321 of the movable seat 32 is connected to the inner cavity of the support 3, thereby realizing the connection between the inner cavity of the support 3 and the inner cavity of the movable vertical rod 93. Since the inner cavity of the support 3 is connected to the inner cavity of the crossbeam 2 through the air pipe 31, and the inner cavity of the movable vertical rod 93 is connected to the inner cavity of the hollow crossbar 92 through the hose, the crossbeam 2 is connected to the inner cavity of the hollow crossbar 92 at this time. Thus, the transverse steam ports 921 arranged vertically / horizontally on the hollow crossbar 92 can also deliver steam outward. With this setting, even when the distance between the two trays 9 is small, there can be enough steam to enter, further improving the uniformity of temperature and humidity of various parts of the precast component 17 during curing.

[0051] Through the above steps, multiple pallets 9 are placed sequentially from top to bottom on the two rows of supports 3 of the crossbeam 2, and the spacing between two adjacent pallets 9 can be selected according to the height of the prefabricated components 17 placed on the upper surface of the pallet 9.

[0052] Subsequently, the folding curing shed 13 is unfolded via the monitoring controller 16 and then closed via the folding door 131, thus enclosing the multiple vertically arranged trays 9 and the prefabricated components on their upper surfaces. The monitoring controller 16 then controls the steam generator 14 to operate, which supplies steam through steam pipes 15 to the interior of each upright 1 and crossbeam 2 of the hollow structure, and discharges it through vertical steam inlets 11 and horizontal steam inlets 12. This multi-angle, three-dimensional steam injection ensures uniform temperature and humidity across the multi-layered prefabricated components 17 during curing. The enclosed folding protective shed 13 helps maintain the internal temperature while reducing steam consumption. It also includes sensors to monitor the internal temperature and humidity of the folding protective shed 13, facilitating the control of these parameters within the required range.

[0053] Working principle after maintenance:

[0054] After the maintenance is completed, open the folding door 131 and put away the folding maintenance shed 13; the two rows of rollers 8 roll in opposite directions to transport the tray 9 on it horizontally outward;

[0055] Then, the hydraulic telescopic cylinder 61 extends vertically, causing the bracket 62, except for the recessed part in the middle, to abut against the lower surface of the remaining bottom tray 9 (fixed vertical rod 91 and a row of hollow horizontal rods 92), and slightly lifting the tray 9 upwards by a small distance. At the same time, the upper surface of the active turntable 64 at the output end of the rotating device 63 abuts tightly against the lower surface of the driven turntable 94 on the lower surface of the bottom tray 9. Both the upper surface of the active turntable 64 and the lower surface of the driven turntable 94 are provided with friction textures to increase friction. Then, the rotating device 63... The rotation is achieved through the friction between the active turntable 64 and the driven turntable 94, which in turn drives the driven turntable 94 to rotate. The rotation of the driven turntable 94, via two connecting rods 95, causes two sets of movable vertical rods 93 to move closer together, resulting in the movable vertical rods 93 moving horizontally away from directly above the support 3. This allows the pallet 9 to detach from the two rows of supports 3. Then, the hydraulic telescopic cylinder 61 retracts, causing the pallet 9 to descend until it is caught by the two rows of rollers 8. The two rows of rollers 8 then transport the pallet 9 and the prefabricated components 17 placed on it outward.

[0056] Repeat the above steps to remove the pallet 9 from bottom to top and place it on the two rows of rollers 8, and then transport the prefabricated components 17 on the cured pallet 9 outward in sequence.

[0057] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A precast component curing frame, characterized in that: include: Upright pole (1) and multiple sets of vertically arranged crossbeams (2) on upright pole (1); A row of rollers (8) is installed along the length of the bottom crossbeam (2). The row of rollers (8) is used to drive the pallet (9) on it to move horizontally in and out. A row of "L"-shaped supports (3) is hinged along the length of the remaining crossbeams (2). Two rows of "L"-shaped supports (3) at the same level are used to place the pallet (9). Lifting assembly (6), which is used to lift the pallet (9) vertically between the upper surface of the two rows of rollers (8) and the two rows of supports (3) on each crossbeam (2), the upper surface of the pallet (9) being used to place prefabricated components; A steam generator (14) is provided, the output end of which is connected to the inner cavity of the upright (1) and the crossbeam (2) via a steam pipe (15); The upright (1) has several vertically arranged vertical steam inlets (11), and the crossbeam (2) has several horizontally arranged horizontal steam inlets (12). Folding maintenance shed (13), which is folded or unfolded to cover or expose components on the uprights (1) and crossbeams (2); The tray (9) includes a fixed vertical bar (91), multiple sets of hollow horizontal bars (92) fixedly arranged along the length of the fixed vertical bar (91), and movable vertical bars (93) distributed on both sides of the fixed vertical bar (91). The two movable vertical bars (93) move closer to or further away from the fixed vertical bar (91) simultaneously through the distance adjustment component. The movable vertical bars (93) are used to cooperate with the "L"-shaped support (3) to place the tray (9). The adjustable distance assembly includes a rotating device (63), an active turntable (64) installed at the output end of the rotating device (63), a driven turntable (94) installed on a fixed vertical rod (91), and a connecting rod (95). The two ends of the connecting rod (95) are respectively connected to the fixed vertical rod (91) and the movable vertical rod (93). The active turntable (64) and the driven turntable (94) are connected together in abutment.

2. The precast component curing frame as described in claim 1, characterized in that: The support (3) with an "L" shape is kept in a normal state by a torsion spring. At this time, the tray (9) can pass through the support (3) from bottom to top in one direction.

3. The precast component curing frame as described in claim 2, characterized in that: The lifting assembly (6) includes a hydraulic telescopic cylinder (61) and a bracket (62) installed at the output end of the hydraulic telescopic cylinder (61). The bracket (62) is recessed in the middle to accommodate the adjusting assembly. The rotating device (63) is installed in the middle of the bracket (62). The hydraulic telescopic cylinder (61) extends and retracts to drive the active turntable (64) to approach and abut against the driven turntable (94) to form an integral or separate assembly.

4. The precast component curing frame as described in claim 2, characterized in that: The hollow crossbar (92) has horizontal steam ports (921) on its upper and lower / left and right sides along its length. The hollow crossbar (92) and the movable vertical bar (93) are hollow inside and connected by a flexible hose.

5. A precast component curing frame as described in claim 4, characterized in that: The support (3) is hollow inside and connected to the inner cavity of the crossbeam (2) through the air pipe (31). The support (3) is used to support the movable vertical rod (93) and has an air outlet on one side. The movable vertical rod (93) has an air inlet (931) along its length. When the movable vertical rod (93) is placed on the support (3), the air outlet and the air inlet (931) correspond one-to-one.

6. A precast component curing frame as described in claim 5, characterized in that: The air outlet of the support (3) is opened and closed by the movable seat (32). The movable seat (32) is normally closed by the elastic element (33). An air channel (321) is provided on the movable seat (32). When the movable vertical rod (93) is placed on the support (3), pressing the movable seat (32) makes the air channel (321) communicate with the inside of the support (3).

7. A precast component curing frame as described in claim 1, characterized in that: The steam generator (14) is a cross-flow chamber fully premixed steam generator.

8. A precast component curing frame as described in claim 1, characterized in that: The rollers (8) in the same row are connected by a drive belt assembly (4).

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