A concrete drying equipment for building construction

Abstract

The present invention relates to the technical field of concrete drying, and specifically discloses a concrete drying device for building construction, including a conveying frame. A double-belt type plate moving assembly for conveying and moving concrete hollow precast slabs is installed on the top wall of the conveying frame, and a hand-adjustable centering assembly is installed at the top end of the conveying frame on one side of the double-belt type plate moving assembly. U-shaped hanging frames are fixed on the front and rear outer walls of the conveying frame, and a double-shaft position adjustment assembly is installed at the bottom end of the U-shaped hanging frames. The present invention enables the outer layer and the inner layer of the precast slab to be dried synchronously, reducing the quality problems caused by uneven drying in the traditional unidirectional drying method. Especially inside the hollow chamber, hot air is blown in from multiple points and at multiple angles through the multi-tube type blowing assembly, effectively promoting the evaporation and migration of moisture and accelerating the drying speed.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete drying, and specifically to a concrete drying device for building construction. Background Art

[0002] Drying equipment plays a crucial role in the drying treatment of wet precast slabs in building construction. It can effectively remove the moisture on the surface and inside of the slabs, thereby improving their adhesion and overall strength, and ensuring the construction quality. Its main functions include accelerating the drying speed, improving the surface dryness of the precast slabs, enhancing the bonding performance between the steel bars and the concrete, reducing cracks and deformations caused by moisture retention, and ensuring the stability and durability of the structure. In addition, the structure of the drying equipment usually consists of a heating system, an air circulation system, a transmission support frame, a control system, and a moisture exhaust system. The heating system provides heat energy, and the air circulation system evenly blows hot air onto the surface of the precast slab through a fan to ensure uniform drying; the support frame is used to place the precast slab to avoid deformation; the control system is equipped with temperature and humidity sensors to monitor the environmental parameters in real time to ensure precise control of the drying process; the moisture exhaust system removes the water vapor in the air to maintain a dry environment. The drying process generally includes three stages: preheating, drying, and cooling. First, gradually increase the air temperature to avoid cracks caused by sudden temperature differences; then, under the conditions of controlling the temperature and humidity, continuously blow hot air to gradually evaporate the moisture, and the duration depends on the humidity and thickness of the slab; finally, gradually lower the air temperature to avoid stress caused by rapid cooling. However, at present, the drying equipment mainly acts on the outer surface of the concrete steel bar hollow precast slab during use. Due to the special structure of the cavity and the deep part inside the concrete steel bar hollow precast slab, there is a strong drying hysteresis, that is, the hot air or hot wind mainly acts on the outer surface of the precast slab and is difficult to penetrate deep into the slab, and the efficiency of heat conduction is limited, resulting in the difficulty of effectively evaporating the deep moisture. Especially inside the cavity, due to poor air circulation and difficulty in heat energy penetration, the moisture retention time is longer, forming a drying hysteresis. At this time, only relying on the water to gradually migrate to the surface through diffusion or penetration, this process is relatively slow and is restricted by the path and speed of moisture migration, resulting in the difficulty of timely and thorough removal of the moisture inside the cavity. The remaining moisture may cause poor bonding, cracks, or even structural defects in the subsequent construction, affecting the service life and safety of the precast slab. Moreover, in order to make up for the drying deficiency, it is also necessary to extend the drying time or take supplementary measures, thereby reducing the construction efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a concrete drying device for building construction. The double-belt type moving plate assembly and the hand-adjustable centering assembly send the concrete reinforced hollow precast slab to the drying station. The double-axis position adjustment assembly and the gear-rack lifting assembly control the multi-tube type blowing assembly with equal torque division at the drying station to move in the X, Y, and Z axes until the multi-tube type blowing assembly with equal torque division enters the hollow chamber of the precast slab. The double-zone blowing assembly supplies hot air to the multi-tube type blowing assembly with equal torque division and the matrix swing leaf type air-drying blowing assembly. Part of the hot air is sent into the air chamber of the precast slab by the multi-tube type blowing assembly with equal torque division, and the other part of the hot air is sent to the outer surface of the precast slab by the matrix swing leaf type air-drying blowing assembly, so as to dry the outer surface and the inner layer of the precast slab simultaneously with hot air, and solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A concrete drying device for building construction, comprising:

[0005] A conveying frame, on the top wall of the conveying frame, there is installed a double-belt type moving plate assembly for conveying the concrete hollow precast slab to move, and at the top end of the conveying frame on one side of the double-belt type moving plate assembly, there is installed a hand-adjustable centering assembly. The front and rear outer walls of the conveying frame are fixed with U-shaped hanging frames, and at the bottom end of the U-shaped hanging frames, there is installed a double-axis position adjustment assembly. The moving end of the double-axis position adjustment assembly is installed with a gear-rack lifting assembly, and the moving end of the gear-rack lifting assembly is installed with a multi-tube type blowing assembly with equal torque division;

[0006] A matrix swing leaf type air-drying blowing assembly, the matrix swing leaf type air-drying blowing assembly is installed on the front and rear inner walls of the U-shaped hanging frame above the double-belt type moving plate assembly. On the outer wall of the U-shaped hanging frame below the double-belt type moving plate assembly far from the hand-adjustable centering assembly, there is installed a double-zone blowing assembly. The double-zone blowing assembly supplies air flow to the two multi-tube type blowing assemblies with equal torque division and the matrix swing leaf type air-drying blowing assembly. On one side of the surface of the conveying frame, there is installed a PLC control panel electrically connected to the input ends of the double-belt type moving plate assembly, the double-axis position adjustment assembly, the gear-rack lifting assembly, the double-zone blowing assembly, the multi-tube type blowing assembly with equal torque division, and the matrix swing leaf type air-drying blowing assembly.

[0007] Preferably, the double-belt type moving plate assembly includes two symmetrical shaft frames fixed on the top wall of the conveying frame, a plurality of synchronous wheels rotatably installed at equal intervals on the outer walls of the two shaft frames close to each other, and conveyor belts sleeved between several synchronous wheels. On the outer wall of one side of the conveying frame, there is installed a reduction motor, and the output shaft of the reduction motor is connected to two synchronous wheels in the same Y-axis direction.

[0008] Preferably, multi-roller auxiliary conveying frames are installed on the left and right outer walls of the conveying frame, and the central axis of the roller body of the multi-roller auxiliary conveying frame is on the same horizontal plane as the central axis of the driving shaft of the reduction motor. The manually adjustable centering assembly includes a bidirectional threaded shaft rotatably installed on one side of the interior of the conveying frame, a nut pair installed at the threaded positions at both ends of the surface of the bidirectional threaded shaft, and a side plate installed at the top of the nut pair through a steel column, the lower surface of the side plate is higher than the upper surface of the conveyor belt, and one end of the bidirectional threaded shaft passes through the outside of the conveying frame and is equipped with a handle.

[0009] Preferably, the dual-axis positioning assembly includes a Y-axis bidirectional screw electric linear module installed on one side of the bottom end of the U-shaped hanger, a support frame installed on the two moving ends of the Y-axis bidirectional screw electric linear module, a Z-frame slidably installed inside the support frame, and a telescopic rod installed between the two Z-frames, one of the support frames is internally installed with an X-axis screw electric linear module for driving the Z-frame and the telescopic rod to move in the X-axis, and the gear rack lifting assembly is installed at the top of the Z-frame.

[0010] Preferably, the equal-magnitude multi-tube blowing assembly includes a back plate installed on the movable end of the gear rack lifting assembly, a plurality of inverted U-shaped sliding arms slidably installed at equal intervals on the surface of the back plate, and a screw-driven lifting module installed at the edge position of one side of the back plate surface. The movable end of the screw-driven lifting module is installed with a dividing plate, and a plurality of inclined slots are provided inside the dividing plate. A protrusion penetrating to the outside of the inclined slot is installed at one end of the surface of the inverted U-shaped sliding arm. A nozzle assembly is installed on the outer wall of the inverted U-shaped sliding arm away from the dividing plate, and the air inlet end of the nozzle assembly and the air outlet end of the dual-zone blowing assembly are connected to each other.

[0011] Preferably, the nozzle assembly includes a switch valve installed on the outer wall of one side of the inverted U-shaped sliding arm, an air intake riser, a tee pipe and a corrugated hose installed in sequence at the bottom end of the switch valve, and a right-angle nozzle installed at the top end of the switch valve.

[0012] Preferably, the dual-zone blower assembly includes a blower installed on the outer wall of one side of the U-shaped hanger, three ventilation ducts installed at the bottom of the blower outlet, and exhaust hoses installed at both ends of the three ventilation ducts. The dual-zone blower assembly also includes an electric heating box installed at the bottom of the Z-shaped frame, one end of the electric heating box and one end of the exhaust hose are connected to each other, and the bottom end of the corrugated hose extends to the interior of the electric heating box and is fixedly connected to the electric heating box.

[0013] Preferably, the matrix swing-blade air-drying and blowing assembly includes two bearing seats fixed on the front and rear inner walls of the U-shaped hanger, an X-axis nozzle rotatably installed between the two bearing seats, and a connecting pipe installed on the outer wall of one side of the exhaust hose. A rotating joint is installed between the connecting pipe and the opposite ends of the X-axis nozzle. A synchronous wheel transmission structure is also installed between two adjacent X-axis nozzles in the Y-axis direction. A three-link reciprocating rotary drive mechanism for driving one of the X-axis nozzles to reciprocate forward and reverse deflection is installed on the outer wall of one side of the U-shaped hanger.

[0014] Preferably, the three-link reciprocating rotary drive mechanism includes an angled plate installed on the outer wall of one side of the U-shaped hanger, a stepper motor installed on the back of the angled plate, and a first-level short link installed on one end of the stepper motor drive shaft. One end of the X-axis nozzle passes through the outside of the angled plate and is fixed with a second-level short link. One end of the surface of the second-level short link is hinged with a middle link, and the bottom end of the middle link and one end of the first-level short link are hinged to each other.

[0015] Preferably, a flow guide pipe is installed between two adjacent connecting pipes, and the flow guide pipe and the two connecting pipes form an inverted U-shaped structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the concrete drying equipment for building construction is provided with a double-belt type moving plate assembly, a hand-adjusted centering assembly, a double-axis positioning assembly, a gear rack lifting assembly, an equally divided multi-tube blowing assembly, a double-zone blasting assembly and a matrix swing blade air drying blowing assembly, etc. The double-belt type moving plate assembly and the hand-adjusted centering assembly send the concrete reinforced hollow prefabricated plate to the drying station, and the double-axis positioning assembly and the gear rack lifting assembly control the drying. The equally divided multi-tube blowing assembly at the drying station moves along the X, Y, and Z axes until it enters the hollow chamber of the prefabricated board. The dual-zone blowing assembly supplies hot air to the equally divided multi-tube blowing assembly and the matrix swing-blade air-drying and blowing assembly. Part of the hot air is sent into the air chamber of the prefabricated board by the equally divided multi-tube blowing assembly, and the other part of the hot air is sent to the outer surface of the prefabricated board by the matrix swing-blade air-drying and blowing assembly, so that the outer surface and inner layer of the prefabricated board are dried by hot air at the same time.

[0017] Among them, through the double-belt type moving plate assembly and the hand-adjustable centering assembly, the precast slabs are accurately and smoothly sent to the drying station, ensuring that each precast slab can be evenly processed during the drying process. The double-axis positioning assembly and the rack and pinion lifting assembly control the X, Y, and Z-axis movements of the equally divided torque multi-tube type blowing assembly, enabling the equally divided torque multi-tube type blowing assembly to accurately enter the hollow cavity of the precast slab, ensuring that the hot air can penetrate into every corner of the cavity. Its multi-angle and multi-position blowing method effectively solves the problem that the hot air in traditional drying equipment is difficult to penetrate deep into the cavity, avoiding the phenomenon of insufficient local drying; Secondly, the double-zone blowing assembly supplies hot air to the equally divided torque multi-tube type blowing assembly and the matrix swing leaf type air-drying blowing assembly, enabling the hot air to act on the outer surface and the internal cavity of the precast slab simultaneously, so that the outer layer and the inner layer of the precast slab can be dried synchronously, reducing the quality problems caused by uneven drying in the traditional single-direction drying method. Especially inside the hollow cavity, the hot air is blown in through multiple points and multi-angles of the multi-tube type blowing assembly, effectively promoting the evaporation and migration of moisture and accelerating the drying speed;

[0018] Finally, the multi-tube type blowing assembly is used to directly send the hot air into the cavity interior, significantly enhancing the penetration ability of the hot air, shortening the path and time of moisture migration, thereby achieving deep drying. At the same time, the matrix swing leaf type air-drying blowing assembly blows the outer surface of the precast slab evenly, effectively avoiding the problems of too fast or too slow local drying, ensuring the uniformity and integrity of drying. Uniform and deep drying reduces problems such as cracks, deformation, and poor bonding caused by moisture residue, ensuring the structural integrity and service life of the precast slab. Especially the drying effect inside the hollow cavity is significantly improved, helping to avoid quality defects caused by residual moisture inside the cavity. And the hot air can cover all areas of the precast slab in a short time, accelerating the evaporation speed of moisture, thereby shortening the overall drying cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view structural schematic diagram of the present invention;

[0020] Figure 2 is the three-dimensional structural schematic Figure 1 ;

[0021] Figure 3 is the three-dimensional structural schematic Figure 2 ;

[0022] Figure 4 is the upper and lower isometric axonometric three-dimensional structural schematic diagram of the present invention;

[0023] Figure 5 is the three-dimensional sectional structural schematic diagram of the present invention;

[0024] Figure 6 is the three-dimensional structural schematicFigure 3 ;

[0025] Figure 7 Schematic three - dimensional structure of the double - axis positioning assembly for the second embodiment of the present invention Figure 1 ;

[0026] Figure 8 Schematic three - dimensional structure of the double - axis positioning assembly for the second embodiment of the present invention Figure 2 ;

[0027] Figure 9 Schematic three - dimensional structure diagram of the equal - torque multi - tube blowing assembly for the second embodiment of the present invention;

[0028] Figure 10 Schematic three - dimensional structure of the double - zone blowing assembly for the third embodiment of the present invention Figure 1 ;

[0029] Figure 11 Schematic three - dimensional structure of the double - zone blowing assembly for the third embodiment of the present invention Figure 2 ;

[0030] Figure 12 Schematic three - dimensional sectional structure diagram of the electric heating box for the third embodiment of the present invention;

[0031] Figure 13 Schematic three - dimensional structure diagram of the matrix swing - blade air - drying and blowing assembly for the third embodiment of the present invention.

[0032] In the figure: 1. Conveyor frame; 101. Multi - roller auxiliary conveyor frame; 2. Double - belt type moving plate assembly; 201. Shaft frame; 202. Reducing motor; 203. Synchronous pulley; 204. Conveyor belt; 3. Hand - adjustable centering assembly; 301. Bi - directional threaded shaft; 302. Handle; 303. Nut pair; 304. Side plate; 4. U - shaped hanger; 5. Double - axis positioning assembly; 501. Y - axis bi - screw electric linear module; 502. Support frame; 503. Z - shaped frame; 504. X - axis screw electric linear module; 505. Telescopic rod; 6. Gear - rack lifting assembly; 7. Equal - torque multi - tube blowing assembly; 701. Back plate; 702. Inverted U - shaped sliding arm; 703. Torque - dividing plate; 704. Convex column; 705. Oblique slot; 706. Screw - driven lifting module; 707. Nozzle assembly; 7071. On - off valve; 7072. Right - angle nozzle; 7073. Intake riser; 7074. Three - way pipe; 7075. Corrugated hose; 8. Double - zone blowing assembly; 801. Blower; 802. Three - way ventilation pipe; 803. Exhaust hose; 804. Electric heating box; 9. Matrix swing - blade air - drying and blowing assembly; 901. Bearing seat; 902. X - axis nozzle; 903. Rotary joint; 904. Connecting pipe; 905. Three - link reciprocating rotary drive mechanism; 906. Synchronous pulley drive structure; 10. PLC control panel. Detailed implementation manners

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1 is given by Figures 1 to 6 The present invention includes a conveying frame 1. A double-belt type plate moving assembly 2 for conveying and moving a concrete hollow precast slab is installed on the top wall of the conveying frame 1. A hand-adjustable centering assembly 3 is installed at the top end of the conveying frame 1 on one side of the double-belt type plate moving assembly 2. U-shaped hanging brackets 4 are fixed on the front and rear outer walls of the conveying frame 1, and a double-axis position adjustment assembly 5 is installed at the bottom end of the U-shaped hanging brackets 4. A gear-rack lifting assembly 6 is installed at the moving end of the double-axis position adjustment assembly 5, and an equally divided torque multi-tube type blowing assembly 7 is installed at the moving end of the gear-rack lifting assembly 6.

[0035] A matrix swing blade type air drying and blowing assembly 9 is installed on the front and rear inner walls of the U-shaped hanging brackets 4 above the double-belt type plate moving assembly 2. A double-zone air blowing assembly 8 is installed on the outer wall of the U-shaped hanging brackets 4 below the double-belt type plate moving assembly 2 away from the hand-adjustable centering assembly 3. The double-zone air blowing assembly 8 supplies air to the two equally divided torque multi-tube type blowing assemblies 7 and the matrix swing blade type air drying and blowing assembly 9. A PLC control panel 10 electrically connected to the input ends of the double-belt type plate moving assembly 2, the double-axis position adjustment assembly 5, the gear-rack lifting assembly 6, the double-zone air blowing assembly 8, the equally divided torque multi-tube type blowing assembly 7, and the matrix swing blade type air drying and blowing assembly 9 is installed on one side of the surface of the conveying frame 1.

[0036] Embodiment 2 is based on Embodiment 1 and is composed of Figure 7 、 Figure 8 and Figure 9Given that, the double-belt type moving plate assembly 2 includes two symmetric shaft brackets 201 fixed on the top wall of the conveying rack 1, a plurality of synchronous pulleys 203 rotatably installed at equal intervals on the outer walls of the two shaft brackets 201 close to each other, and a conveyor belt 204 sleeved between several synchronous pulleys 203. A reduction motor 202 is installed on the outer wall of one side of the conveying rack 1, and the output shaft of the reduction motor 202 is connected to two synchronous pulleys 203 in the same Y-axis direction. The staff places the concrete reinforced hollow precast slab to be dried on the multi-roller type auxiliary conveying rack 101, and makes the opening direction of the precast slab cavity face the equal-divided moment multi-tube type blowing assembly 7. Then, manually push the concrete reinforced hollow precast slab, so that the precast slab enters the double-belt type moving plate assembly 2 with the assistance of the multi-roller type auxiliary conveying rack 101. By turning on the reduction motor 202 through the PLC control panel 10 to work, the drive shaft of the reduction motor 202 drives one of the synchronous pulleys 203 to rotate, and then drives the precast slab into the drying area where the equal-divided moment multi-tube type blowing assembly 7 and the matrix swing blade type air-drying and blowing assembly 9 are located through the conveyor belt 204;

[0037] Multi-roller type auxiliary conveying racks 101 are installed on the left and right outer walls of the conveying rack 1. The central axis of the roller body of the multi-roller type auxiliary conveying rack 101 and the central axis of the drive shaft of the reduction motor 202 are on the same horizontal plane. The manual centering assembly 3 includes a bidirectional threaded shaft 301 rotatably installed on one side inside the conveying rack 1, nut pairs 303 installed at the threaded positions at both ends of the surface of the bidirectional threaded shaft 301, and side plates 304 installed at the top of the nut pairs 303 through steel columns. The lower surface of the side plate 304 is higher than the upper surface of the conveyor belt 204. One end of the bidirectional threaded shaft 301 penetrates to the outside of the conveying rack 1 and is installed with a handle 302. During the movement of the precast slab, the staff drives the bidirectional threaded shaft 301 to rotate through the handle 302, and then the bidirectional threaded shaft 301 drives the two nut pairs 303 and the side plates 304 in its own axis direction to move towards each other, so that when the precast slab deviates on the multi-roller type auxiliary conveying rack 101 and the conveyor belt 204, it can be corrected in time to avoid damage to the equipment caused by collision between the subsequent equal-divided moment multi-tube type blowing assembly 7 and the precast slab due to positioning errors;

[0038] The double-axis positioning assembly 5 includes a Y-axis bidirectional lead screw electric linear module 501 installed on one side of the bottom end of the U-shaped hanger 4, a support frame 502 installed on two moving ends of the Y-axis bidirectional lead screw electric linear module 501, a Z-shaped frame 503 slidably installed inside the support frame 502, and a telescopic rod 505 installed between the two Z-shaped frames 503. An X-axis lead screw electric linear module 504 for driving the Z-shaped frame 503 and the telescopic rod 505 to move in the X-axis direction is installed inside one of the support frames 502. The gear-rack lifting assembly 6 is installed on the top end of the Z-shaped frame 503. After the double-belt type moving plate assembly 2 transfers the precast slab to the lower part of the matrix swing blade type air-drying and blowing assembly 9, the staff controls the Y-axis bidirectional lead screw electric linear module 501, the X-axis lead screw electric linear module 504, and the gear-rack lifting assembly 6 to act through the PLC control panel 10. The gear-rack lifting assembly 6 is used to control the Z-axis height of the equal-divided torque multi-tube type blowing assembly 7, and the X-axis lead screw electric linear module 504 drives the Z-shaped frame 503, the telescopic rod 505, and the equal-divided torque multi-tube type blowing assembly 7 to move in the X-axis direction. The X-axis lead screw electric linear module 504 is used to drive the two support frames 502 and the two equal-divided torque multi-tube type blowing assemblies 7 to move towards each other. During this process, the telescopic rod 505 is used to connect the two Z-shaped frames 503 and allow the two Z-shaped frames 503 and the two support frames 502 to approach each other until the air outlet end of the equal-divided torque multi-tube type blowing assembly 7 enters the hollow chamber of the concrete precast slab, so as to realize the rapid positioning and fine adjustment of the equal-divided torque multi-tube type blowing assembly 7 through the double-axis positioning assembly 5, reduce the adjustment time, improve the production efficiency, and its adjustment range is wide, which can adapt to precast parts of different sizes and shapes;

[0039] The equal-divided torque multi-tube type blowing assembly 7 includes a back plate 701 installed on the moving end of the gear-rack lifting assembly 6, a number of inverted U-shaped sliding arms 702 slidably installed at equal intervals on the surface of the back plate 701, and a lead screw-driven lifting module 706 installed at one side edge position on the surface of the back plate 701. A torque dividing plate 703 is installed on the moving end of the lead screw-driven lifting module 706. A number of inclined slots 705 are arranged inside the torque dividing plate 703. A convex column 704 penetrating outside the inclined slot 705 is installed at one end of the surface of the inverted U-shaped sliding arm 702. A nozzle assembly 707 is installed on the outer wall of the inverted U-shaped sliding arm 702 away from the torque dividing plate 703. The air inlet end of the nozzle assembly 707 is connected to the air outlet end of the double-zone air blowing assembly 8. When the nozzle assembly 707 enters the hollow chamber of the precast slab, the hot air flow sent by the double-zone air blowing assembly 8 enters the right-angle nozzle 7072 through the corrugated hose 7075, the three-way pipe 7074, the air inlet riser 7073, and the on-off valve 7071, and the right-angle nozzle 7072 sends the hot air flow into the hollow chamber to realize the uniform distribution of the air flow, avoid local insufficient drying or over-drying, and ensure the overall drying quality of the precast slab;

[0040] The nozzle assembly 707 includes a switch valve 7071 installed on the outer wall of one side of the inverted U-shaped sliding arm 702, an intake riser pipe 7073, a tee pipe 7074, and a corrugated hose 7075 installed in sequence at the bottom end of the switch valve 7071, and a right-angle nozzle 7072 installed at the top end of the switch valve 7071. Each nozzle assembly 707 can adjust the air supply volume independently by the switch valve 7071, and implement precise air supply according to the humidity difference in different sections of the cavity;

[0041] When using the equal-divided torque multi-pipe blowing assembly 7, the staff controls the screw rod to drive the lifting module 706 to work through the PLC control panel 10. The screw rod drives the lifting module 706 to drive the torque dividing plate 703 to lift. During the lifting and sliding of the torque dividing plate 703, since the convex column 704 of the inverted U-shaped sliding arm 702 is located in the inclined notch 705, the inverted U-shaped sliding arm 702 moves horizontally when the torque dividing plate 703 lifts and slides, so that the distance between adjacent inverted U-shaped sliding arms 702 can be adjusted until the nozzle assembly 707 faces the hollow chamber of the precast slab, facilitating the double-axis positioning assembly 5 to send the nozzle assembly 707 into the hollow chamber of the precast slab.

[0042] Embodiment 3, on the basis of Embodiment 2, consists of Figure 10 , Figure 11 , Figure 12 and Figure 13 The double-zone blowing assembly 8 includes a blower 801 installed on the outer wall of one side of the U-shaped hanger 4, a three-way air pipe 802 installed at the bottom end of the air outlet of the blower 801, and exhaust hoses 803 installed at both ends of the three-way air pipe 802. The double-zone blowing assembly 8 also includes an electric heating box 804 installed at the bottom end of the Z-shaped frame 503. One end of the electric heating box 804 is connected to one end of the exhaust hose 803. The bottom end of the corrugated hose 7075 extends into the electric heating box 804 and is fixedly connected to the electric heating box 804. Electric heating tubes are installed inside the electric heating box 804, and the input end of the electric heating tubes is electrically connected to the output end of the PLC control panel 10;

[0043] The blower 801 and the electric heating box 804 are controlled by the PLC control panel 10 to achieve the purpose of controlling the wind speed and temperature. The blower 801 sends high-speed air flow into the electric heating box 804 through the three-way air pipe 802 and the exhaust hose 803. The high-speed air flow passing through the electric heating box 804 is heated up and enters the nozzle assembly 707 of the equal-divided torque multi-pipe blowing assembly 7. Its strategy of sectional blowing reduces the energy consumption of the equipment while ensuring the drying effect;

[0044] The matrix swinging blade air-drying and blowing assembly 9 includes two bearing seats 901 fixed on the front and rear inner walls of the U-shaped hanger 4, an X-axis nozzle 902 rotatably installed between the two bearing seats 901, and a connecting pipe 904 installed on the outer wall of one side of the exhaust hose 803. A rotary joint 903 is installed between the opposite ends of the connecting pipe 904 and the X-axis nozzle 902. When the blower 801 is working, a part of the air flow passing through the exhaust hose 803 also enters the X-axis nozzle 902 through the connecting pipe 904 and the rotary joint 903, and the X-axis nozzle 902 blows this part of the air flow onto the upper surface of the precast slab;

[0045] A synchronous pulley drive structure 906 is also installed between two adjacent X-axis nozzles 902 in the Y-axis direction, and a three-link reciprocating rotary drive mechanism 905 for driving one of the X-axis nozzles 902 to reciprocate and rotate forward and backward is installed on the outer wall of one side of the U-shaped hanger 4;

[0046] The three-link reciprocating rotary drive mechanism 905 includes an angle plate installed on the outer wall of one side of the U-shaped hanger 4, a stepping motor installed on the back of the angle plate, and a first-stage short link installed at one end of the driving shaft of the stepping motor. One end of the X-axis nozzle 902 penetrates to the outside of the angle plate and is fixed with a second-stage short link. One end of the surface of the second-stage short link is hinged with a middle-section link, and the bottom end of the middle-section link and one end of the first-stage short link are hinged to each other. A diversion pipe is installed between two adjacent connecting pipes 904, and the diversion pipe and the two connecting pipes 904 form an inverted U-shaped structure;

[0047] While the X-axis nozzle 902 is blowing air, the staff turns on the three-link reciprocating rotary drive mechanism 905 through the PLC control panel 10. Then, the stepping motor in the three-link reciprocating rotary drive mechanism 905 drives the first-stage short link to rotate. The rotation action of the first-stage short link is converted into a reciprocating swing action of the second-stage short link through the middle-section link. Since the X-axis nozzle 902 is rotatably installed between the two bearing seats 901, and one end of the X-axis nozzle 902 is fixedly connected to one end of the second-stage short link, the second-stage short link drives the X-axis nozzle 902 to reciprocate and rotate forward and backward, thereby continuously changing the air outlet angle of the X-axis nozzle 902. At this time, the other X-axis nozzle 902 also moves synchronously under the drive of the synchronous pulley drive structure 906. The periodic swing of the X-axis nozzle 902 enables the air flow to sweep the surface of the precast slab at different angles, realizing uniform drying of the surface of the precast slab.

[0048] When the embodiment of the present application is in use, first, the staff comprehensively checks the conveying rack 1, the hand-adjustable centering assembly 3, the double-axis positioning assembly 5, the gear-rack lifting assembly 6, the equal-division multi-tube blowing assembly 7, the double-zone blowing assembly 8, the matrix swing leaf air-drying and blowing assembly 9 and the PLC control panel 10 to ensure that all parts of the equipment are firmly connected without abnormalities, well lubricated, and in a normal electrical connection state. It is also confirmed that the concrete reinforced hollow precast slab is completed, the surface is clean, without obvious defects or impurities, and is ready to enter the drying process. The operator places the concrete reinforced hollow precast slab on the double-belt plate transfer assembly 2, and the double-belt plate transfer assembly 2 sends the concrete reinforced hollow precast slab to the drying station where the equal-division multi-tube blowing assembly 7 and the matrix swing leaf air-drying and blowing assembly 9 are located. During the period when the precast slab enters the drying area, the staff manually operates the hand-adjustable centering assembly 3. By observing the alignment of the edge of the precast slab with the double-belt plate transfer assembly 2, it is ensured that the central axis of the precast slab is approximately coincident with the vertical central reference plane of the conveying rack 1, laying a position foundation for the subsequent spatial movement of the two equal-division multi-tube blowing assemblies 7 and for entering the hollow chamber of the precast slab. After the concrete reinforced hollow precast slab stops being conveyed, the staff adjusts the positions of the two equal-division multi-tube blowing assemblies 7 on the X, Y, and Z axes according to the size and shape of the precast slab through the PLC control panel 10, the double-axis positioning assembly 5, and the gear-rack lifting assembly 6 to ensure that the air outlet ends of the equal-division multi-tube blowing assemblies 7 enter the hollow chambers of the concrete reinforced hollow precast slab. After the position of the equal-division multi-tube blowing assembly 7 is adjusted, the staff loads the working temperature and wind speed of the double-zone blowing assembly 8 through the PLC control panel 10 so that the double-zone blowing assembly 8 injects hot air currents into the two equal-division multi-tube blowing assemblies 7 and the matrix swing leaf air-drying and blowing assembly 9 at the same time. At this time, a part of the hot air current is sent into the hollow chamber of the precast slab through the equal-division multi-tube blowing assembly 7 to accelerate the replacement of the humid air in the cavity, and another part of the hot air current is evenly blown onto the upper surface of the precast slab through the matrix swing leaf air-drying and blowing assembly 9. The matrix swing leaf air-drying and blowing assembly 9 periodically swings to alternately change the blowing direction to change the hot air projection angle, thereby eliminating the drying blind spots at the sunken or convex parts on the surface. During the drying process, the staff closely monitors the operating state of the equipment, promptly discovers and eliminates faults, such as insufficient hot air or equipment vibration, and reasonably arranges the drying time according to the thickness and humidity of the precast slab, combined with the time and parameters displayed on the PLC control panel 10. When necessary, the hot air temperature or wind speed can be adjusted through the PLC control panel 10 to optimize the drying effect.When the precast slab reaches the expected drying standard, the staff sends a stop signal to the equipment through the PLC control panel 10. At this time, the double-zone air-blowing assembly 8 gradually reduces the air supply temperature, maintains the air flow circulation to balance the temperature difference inside and outside the component. The double-axis positioning assembly 5, the gear-rack lifting assembly 6, and the equal-divided torque multi-tube blowing assembly 7 return to their initial positions, while the double-belt plate-transferring assembly 2 conveys the processed precast slab to the next process to check the drying effect of the precast slab, confirm that there are no defects such as cracks and deformations, and then continue the drying operation of the next precast slab. After the operation is completed, the staff cleans and maintains the equipment to ensure its good operating condition.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete drying device for building construction, characterized in that, Including: A conveying rack (1), on the top wall of the conveying rack (1), a double-belt type plate moving assembly (2) for conveying the movement of precast concrete hollow slabs is installed, and at the top end of the conveying rack (1) on one side of the double-belt type plate moving assembly (2), a hand-adjustable centering assembly (3) is installed. U-shaped hanging brackets (4) are fixed on the front and rear outer walls of the conveying rack (1), and at the bottom end of the U-shaped hanging brackets (4), a double-axis position adjustment assembly (5) is installed. The moving end of the double-axis position adjustment assembly (5) is installed with a gear-rack lifting assembly (6), and the moving end of the gear-rack lifting assembly (6) is installed with an equally divided torque multi-tube type blowing assembly (7); A matrix swing blade type air drying and blowing assembly (9), the matrix swing blade type air drying and blowing assembly (9) is installed on the front and rear inner walls of the U-shaped hanging brackets (4) above the double-belt type plate moving assembly (2). On the outer wall of the U-shaped hanging brackets (4) below the double-belt type plate moving assembly (2) away from the hand-adjustable centering assembly (3), a double-zone air blowing assembly (8) is installed. The double-zone air blowing assembly (8) feeds air into two equally divided torque multi-tube type blowing assemblies (7) and the matrix swing blade type air drying and blowing assembly (9). On one side of the surface of the conveying rack (1), a PLC control panel (10) electrically connected to the input ends of the double-belt type plate moving assembly (2), the double-axis position adjustment assembly (5), the gear-rack lifting assembly (6), the double-zone air blowing assembly (8), the equally divided torque multi-tube type blowing assembly (7), and the matrix swing blade type air drying and blowing assembly (9) is installed; The double-axis position adjustment assembly (5) includes a Y-axis bidirectional lead screw electric linear module (501) installed on one side of the bottom end of the U-shaped hanging bracket (4), a support frame (502) installed on the two moving ends of the Y-axis bidirectional lead screw electric linear module (501), a Z-shaped frame (503) slidably installed inside the support frame (502), and a telescopic rod (505) installed between the two Z-shaped frames (503). Inside one of the support frames (502), an X-axis lead screw electric linear module (504) for driving the Z-shaped frame (503) and the telescopic rod (505) to move in the X-axis direction is installed. The gear-rack lifting assembly (6) is installed at the top end of the Z-shaped frame (503); The equally divided torque multi-tube type blowing assembly (7) includes a back plate (701) installed on the moving end of the gear-rack lifting assembly (6), a number of inverted U-shaped sliding arms (702) slidably installed at equal intervals on the surface of the back plate (701), and a lead screw-driven lifting module (706) installed at the edge position on one side of the surface of the back plate (701). The moving end of the lead screw-driven lifting module (706) is installed with a torque dividing plate (703). Inside the torque dividing plate (703), a number of inclined slots (705) are provided. At one end of the surface of the inverted U-shaped sliding arm (702), a convex column (704) penetrating outside the inclined slot (705) is installed. On the outer wall of the inverted U-shaped sliding arm (702) away from the torque dividing plate (703), a nozzle assembly (707) is installed. The air inlet end of the nozzle assembly (707) is connected to the air outlet end of the double-zone air blowing assembly (8).

2. The concrete drying equipment for building construction according to claim 1, characterized in that: The double-belt type shifting plate assembly (2) includes two symmetric shaft brackets (201) fixed on the top wall of the conveying rack (1), a plurality of synchronous pulleys (203) rotatably installed at equal intervals on the outer walls of the two shaft brackets (201) close to each other, and a conveyor belt (204) sleeved between several synchronous pulleys (203). A reduction motor (202) is installed on the outer wall of one side of the conveying rack (1), and the output shaft of the reduction motor (202) is connected to two synchronous pulleys (203) in the same Y-axis direction.

3. The concrete drying equipment for building construction according to claim 2, characterized in that: Multi-roller type auxiliary conveying racks (101) are installed on the left and right outer walls of the conveying rack (1). The central axis of the roller body of the multi-roller type auxiliary conveying rack (101) is on the same horizontal plane as the central axis of the driving shaft of the reduction motor (202). The manual centering assembly (3) includes a bidirectional threaded shaft (301) rotatably installed on one side inside the conveying rack (1), nut pairs (303) installed at the threaded positions at both ends of the surface of the bidirectional threaded shaft (301), and side plates (304) installed at the top of the nut pairs (303) through steel columns. The lower surface of the side plate (304) is higher than the upper surface of the conveyor belt (204). One end of the bidirectional threaded shaft (301) penetrates to the outside of the conveying rack (1) and is installed with a handle (302).

4. The concrete drying equipment for building construction according to claim 3, characterized in that: The nozzle assembly (707) includes a switch valve (7071) installed on the outer wall of one side of the inverted U-shaped sliding arm (702), an air inlet riser pipe (7073), a three-way pipe (7074), and a corrugated hose (7075) sequentially installed at the bottom end of the switch valve (7071). A right-angle nozzle (7072) is installed at the top end of the switch valve (7071).

5. The concrete drying equipment for building construction according to claim 4, characterized in that: The double-zone air blowing assembly (8) includes a blower (801) installed on the outer wall of one side of the U-shaped hanging bracket (4), a three-way air pipe (802) installed at the bottom end of the air outlet of the blower (801), and exhaust hoses (803) installed at both ends of the three-way air pipe (802). The double-zone air blowing assembly (8) also includes an electric heating box (804) installed at the bottom end of the Z-shaped bracket (503). One end of the electric heating box (804) is connected to one end of the exhaust hose (803). The bottom end of the corrugated hose (7075) extends into the interior of the electric heating box (804) and is fixedly connected to the electric heating box (804).

6. The concrete drying equipment for building construction according to claim 5, characterized in that: The matrix swing blade type air drying and blowing assembly (9) includes two bearing seats (901) fixed on the front and rear inner walls of the U-shaped hanging bracket (4), an X-axis nozzle (902) rotatably installed between the two bearing seats (901), and a connecting pipe (904) installed on the outer wall of one side of the exhaust hose (803). A rotary joint (903) is installed between the opposite ends of the connecting pipe (904) and the X-axis nozzle (902). A synchronous pulley transmission structure (906) is also installed between two adjacent X-axis nozzles (902) in the Y-axis direction. A three-link reciprocating rotary drive mechanism (905) for driving one of the X-axis nozzles (902) to reciprocate and deflect in both positive and negative directions is installed on the outer wall of one side of the U-shaped hanging bracket (4).

7. The concrete drying equipment for building construction according to claim 6, characterized in that: The three-link reciprocating rotary drive mechanism (905) includes an angle plate installed on the outer wall of one side of the U-shaped hanger (4), a stepping motor installed on the back of the angle plate, and a first-stage short link installed at one end of the drive shaft of the stepping motor. One end of the X-axis nozzle (902) penetrates to the outside of the angle plate and is fixed with a second-stage short link. One end of the surface of the second-stage short link is hinged with a middle-section link, and the bottom end of the middle-section link and one end of the first-stage short link are hinged to each other.

8. A concrete drying device for building construction according to claim 7, characterized in that: A diversion pipe is installed between two adjacent said communicating pipes (904), and the diversion pipe and the two communicating pipes (904) form an inverted U-shaped structure.

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