A turnover hoisting device for prefabricated foundation molds

Abstract

The application discloses a turnover hoisting device for a prefabricated foundation mold and particularly relates to the technical field of prefabricated foundation production and manufacturing. The application is characterized in that side mold pieces are arranged on both sides of the upper mold piece and move with the connecting plates. The eccentric wheel is driven to rotate by a servo motor, the two eccentric ends of the eccentric wheel respectively push the corresponding push rods to move, and then the two connecting plates drive the side mold pieces on both sides to be separated from the lower mold piece synchronously, so that the side mold dismounting process is changed from manual side-by-side dismounting to mechanical synchronous demolding, manual mold dismounting operation is reduced, and the mold dismounting efficiency of the prefabricated foundation mold is improved. The dismounting actions of the two side mold pieces have good synchronism, one side is prevented from being demolded first and the other side from still being attached, so that the prefabricated foundation is not subjected to uneven stress, and thus the edges and corners of the prefabricated foundation are prevented from being pulled. The lower mold piece is sent into a cleaning seat after being turned over by 180 degrees by the hoisting unit, so that the mold cavity of the lower mold piece is converted from an upward state to a downward state.

Description

Technical Field

[0001] This invention relates to the field of prefabricated foundation manufacturing technology, specifically to a tilting and hoisting device for prefabricated foundation molds. Background Technology

[0002] Precast foundations are commonly used structural components in engineering fields such as power, construction, and transportation. They typically require casting in molds, followed by curing, demolding, transportation, and installation. Due to their large size, high weight, and high structural strength requirements, precast foundations necessitate the use of hoisting equipment to lift, transfer, and rotate the molds containing the precast foundations or the demolded foundations during production to meet subsequent processing, testing, and transportation needs.

[0003] Currently, the tilting and hoisting of precast foundation molds is typically accomplished using traditional hoisting methods such as cranes, slings, and hooks. During use, the side molds usually require manual disassembly side by side, which is not only inefficient but also prone to uneven stress on the precast foundation due to asynchronous disassembly of the side molds, leading to pulling, bumping, or even damage to the edges and corners. Furthermore, the lack of an effective automatic centering and positioning structure after the lower mold is placed makes it prone to installation misalignment, affecting the mold-closing accuracy between the upper, side, and lower molds. Using a fixed limiting structure can easily interfere with subsequent hoisting of the lower mold. In addition, after demolding, concrete residue and other impurities easily adhere to the inner wall of the lower mold. Current methods rely heavily on manual scraping and cleaning of the mold cavity. Due to the depth of the mold cavity and the strong adhesion of impurities, cleaning is difficult, labor-intensive, inefficient, and prone to re-falling and remaining inside the mold cavity, affecting the subsequent reuse of the mold. Summary of the Invention

[0004] The purpose of this invention is to provide a tilting and hoisting device for prefabricated foundation molds to solve the problems mentioned in the background art.

[0005] The main technical problem solved by this invention is: The side molds of the precast foundation mold need to be disassembled manually side by side, which not only has low disassembly efficiency, but also easily causes uneven stress on the precast foundation when the two side molds are disassembled at different times, resulting in the corners of the precast foundation being pulled, bumped, or even damaged. At the same time, after the lower mold is placed, there is no effective automatic centering and positioning structure, which is prone to installation offset and affects the mold closing accuracy between the upper mold, side mold and lower mold.

[0006] This invention can be achieved through the following technical solutions: A tilting and hoisting device for a precast foundation mold includes two track frames, with a crossbeam slidably installed between the two track frames. A U-shaped support seat is placed on the ground directly below the crossbeam. A lower mold is installed inside the support seat, and an upper mold is installed on the upper end of the lower mold. The two ends of the bottom surface of the crossbeam are connected to a lifting plate by a hoisting rope. A hoisting unit for lifting the upper or lower mold is installed on the bottom surface of the lifting plate. The bottom surface of the bearing seat is provided with sliding lifting stops at both ends to limit the movement of the lower module; The upper surface of the upper mold is symmetrically provided with two connecting pieces that slide along the top surface of the upper mold, and the bottom surface of the connecting pieces is connected to a side mold that blocks the side of the lower mold. The upper surface of the upper mold is provided with a fixed seat on one side of the connector. The fixed seat is fixed to the upper mold. A push rod extending into the fixed seat is connected to the top side of the connector. The end of the push rod is arc-shaped. An eccentric wheel driven by a servo motor is rotatably installed in the middle of the upper surface of the upper mold. The two eccentric ends of the eccentric wheel rotate and abut against the push rods on the corresponding sides. The two side molds separate from the corresponding sides of the lower mold.

[0007] A further technical improvement of the present invention is that: one end of the push rod that extends into the fixed seat is fitted with a retaining ring that slides within the fixed seat, and a spring is fitted around the outside of the push rod between the fixed seat and the retaining ring.

[0008] A further technical improvement of the present invention is that: the sliding lifting stop includes an adjustment cavity located at the edge of the bearing seat, the bottom of the inner cavity of the adjustment cavity is provided with an inclined platform, and a horizontally oriented electric cylinder is installed on the inner wall of the adjustment cavity. The pushing end of the electric cylinder is connected to a limiting frame that moves within the adjustment cavity. A positioning plate with an initial height not higher than the adjustment cavity is movably installed within the limiting frame. The inclined side of the positioning plate abuts against the inclined platform, and a spring is sleeved between the bottom of the positioning plate and the limiting frame.

[0009] A further technical improvement of the present invention is that the end of the adjustment cavity is located below one side of the edge of the lower mold.

[0010] A further technical improvement of the present invention is that: the hoisting unit includes an adjusting screw installed inside the hoisting plate and driven by a dual-axis motor, and a moving plate is sleeved on the threaded end of each adjusting screw. A rotating seat is rotatably installed on the bottom inner side of the moving plate, and a clamping cylinder for clamping the upper or lower mold is installed on the inner side of the rotating seat. The turning gap formed between the rotating seat and the bottom surface of the hanging plate is greater than the width of the lower mold.

[0011] A further technical improvement of the present invention is that a winding rod driven by a winch motor and wound around the suspension ropes at both ends is installed inside the crossbeam.

[0012] A further technical improvement of the present invention is that: a cleaning frame for supporting the upper module and a cleaning seat that enters after the support seat is flipped are sequentially provided on one side of the support seat along the sliding direction of the crossbeam.

[0013] A further technical improvement of the present invention is that: the bottom surface of the inner cavity of the cleaning seat is provided with a liquid storage tank, a guide rail is installed on the top side wall of the liquid storage tank, and the liquid storage tank stores cleaning liquid; an adjustment tube is installed on the slider of the guide rail; the adjustment tube is connected to the liquid storage tank through a hose; and nozzles are installed on the top and side surfaces of the adjustment tube; the nozzles are used to spray cleaning liquid onto the inner wall of the lower mold and soften impurities adhering to the inner wall of the lower mold.

[0014] A further technical improvement of the present invention is that: lifting cylinders are installed at both ends of one side surface of the regulating tube, the pushing end of the two lifting cylinders is connected to the same upper scraper, and the pushing end of each lifting cylinder is fixed with a connecting plate that slides along the vertical direction of the regulating tube. An regulating cylinder is installed on the inner side of the connecting plate, and a side scraper pushed by the regulating cylinder is provided on the outer side of the connecting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting side molds that move with the connecting parts on both sides of the upper mold, and using a servo motor to drive the eccentric wheel to rotate, the two eccentric ends of the eccentric wheel push the corresponding push rods to move. Then, through the two connecting parts, the side molds on both sides are driven to separate from the lower mold synchronously. This changes the side mold disassembly process from manual disassembly one side at a time to mechanical synchronous demolding, reducing manual demolding operations and improving the demolding efficiency of the precast foundation mold. The separation action of the two side molds has good synchronicity, avoiding uneven stress on the precast foundation caused by one side demolding first while the other side remains attached, thereby reducing the pulling on the corners of the precast foundation. 2. By setting sliding lifting stops on both sides of the bearing seat, the limit frame is driven by an electric cylinder to move horizontally along the adjustment cavity. The horizontal displacement of the limit frame is converted into the vertical lifting of the positioning plate through the inclined surface cooperation between the positioning plate and the inclined platform. As the positioning plate moves toward the lower mold, it extends upward into the adjustment cavity, so that the lower mold can be pushed and limited by both sides. This allows the lower mold to automatically adjust to the middle position of the bearing seat, improving the accuracy and stability of the installation position of the lower mold and reducing the assembly error caused by the positional deviation of the lower mold during subsequent mold closing, casting, and demolding. When the electric cylinder retracts, the positioning plate is hidden inside the bearing seat while releasing the limitation on the lower mold, avoiding interference from the fixed stop structure on the placement and lifting of the lower mold. 3. After the lower mold is rotated 180 degrees by the hoisting unit, it is sent into the cleaning seat, so that the mold cavity of the lower mold changes from an upward state to a downward state. On the one hand, it is convenient for the nozzles, upper scrapers and side scrapers inside the cleaning seat to enter the mold cavity for cleaning. On the other hand, it allows the scraped concrete residue to be directly removed from the mold cavity under the action of gravity, reducing the possibility of impurities remaining or accumulating inside the lower mold after cleaning. The cleaning method adopts the pre-softening of cleaning fluid and mechanical scraping by scrapers. 4. The upper scraper is driven to rise and fall synchronously by two lifting cylinders. The upper scraper actively adjusts the scraping height according to the position of the inner top wall of the lower mold and maintains stable contact with the inner top wall of the lower mold during cleaning, thereby improving the removal effect of impurities in the top area. After cleaning, the upper scraper can actively descend and retract to slide and remove impurities that have fallen on the liquid storage tank. The height of the side scraper is adjusted synchronously with the upper scraper, so that the top scraping structure and the side scraping structure can change their working positions synchronously according to the internal space of the lower mold, improving the coordination between cleaning actions in different areas. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the push rod and the fixed base of the present invention; Figure 3 This is a schematic diagram of the installation structure of the positioning plate of the present invention; Figure 4 This is a schematic diagram of the installation structure of the clamping cylinder of the present invention; Figure 5 This is a schematic diagram of the installation structure of the regulating tube of the present invention; Figure 6 This is a schematic diagram of the three-dimensional installation structure of the upper scraper and the side scraper of the present invention.

[0018] In the diagram: 1. Track frame; 2. Crossbeam; 3. Hanging plate; 4. Moving plate; 5. Bearing seat; 6. Upper mold; 7. Eccentric wheel; 8. Push rod; 9. Fixed seat; 10. Connecting piece; 11. Limiting frame; 12. Adjusting cavity; 13. Positioning plate; 14. Inclined platform; 15. Electric cylinder; 16. Winding rod; 17. Adjusting screw; 18. Rotating seat; 19. Clamping cylinder; 20. Lower mold; 21. Cleaning seat; 22. Liquid storage tank; 23. Adjusting pipe; 24. Nozzle; 25. Upper scraper; 26. Guide rail; 27. Lifting cylinder; 28. Connecting plate; 29. ​​Side scraper; 30. Adjusting cylinder. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0020] Please see Figures 1-6 As shown, the present invention provides a tilting and hoisting device for a precast foundation mold, including two track frames 1, a crossbeam 2 slidably installed between the two track frames 1, a bearing seat 5 with a U-shaped structure placed on the ground directly below the crossbeam 2, a lower mold 20 installed in the bearing seat 5, an upper mold 6 matchedly installed on the upper end face of the lower mold 20, and a lifting plate 3 connected to the bottom two ends of the crossbeam 2 by a lifting rope, and a hoisting unit for lifting the upper mold 6 or the lower mold 20 installed on the bottom surface of the lifting plate 3; The bottom surface of the support base 5 is provided with sliding lifting stops at both ends to limit the lower mold 20; Two connecting pieces 10 are symmetrically provided on the upper surface of the upper mold 6, which slide along the top surface of the upper mold 6. The bottom surface of the connecting piece 10 is connected to a side mold that blocks the side of the lower mold 20. A fixing seat 9 is provided on the upper surface of the upper mold 6 and on one side of the connector 10. The fixing seat 9 is fixed to the upper mold 6. A push rod 8 extending into the fixing seat 9 is connected to the top side of the connector 10. The end of the push rod 8 is arc-shaped. An eccentric wheel 7 driven by a servo motor is rotatably installed in the middle of the upper surface of the upper mold 6. The two eccentric ends of the eccentric wheel 7 rotate and abut against the push rod 8 on the corresponding side. The two side molds are separated from the corresponding side of the lower mold 20.

[0021] In use, the lower mold 20 is placed inside the U-shaped support 5, and the lower mold 20 is centered and positioned by the sliding lifting stops at both ends of the bottom surface of the support 5, so that the lower mold 20 is held in the predetermined position of the support 5. Then, the upper mold 6 is installed on the upper surface of the lower mold 20, and the side molds on both sides of the upper mold 6 are respectively located on the corresponding sides of the lower mold 20. When the connecting piece 10 moves, it synchronously drives the side molds to move closer to or further away from the lower mold 20.

[0022] In the mold-closed state, the side mold pieces on both sides fit against the corresponding sides of the lower mold piece 20, so that the upper mold piece 6, the lower mold piece 20, and the side mold pieces on both sides together form a mold cavity for precast foundation casting. After the concrete pouring is completed and the predetermined demolding conditions are met, the servo motor located in the middle of the upper surface of the upper mold piece 6 is activated. The servo motor drives the eccentric wheel 7 to rotate. When the eccentric wheel 7 rotates, the two eccentric ends apply a pushing force to the arc-shaped ends of the corresponding push rods 8, causing the two push rods 8 to move in opposite directions. The push rods 8 further drive the corresponding connecting piece 10 to slide along the top surface of the upper mold piece 6, and the connecting piece 10 drives the side mold pieces on both sides to move synchronously away from the lower mold piece 20, so that the two side mold pieces separate from the corresponding sides of the lower mold piece 20, making it convenient to remove the precast product.

[0023] The end of the push rod 8 adopts an arc-shaped structure, which enables the push rod 8 and the eccentric wheel 7 to maintain a relatively smooth rotational contact state. This reduces the possibility of jamming at the contact position during the rotation of the eccentric wheel 7 and helps to stably convert the rotational motion of the eccentric wheel 7 into the linear displacement of the push rod 8.

[0024] When it is necessary to remove the upper mold 6 first, the hoisting unit connects to the upper mold 6, and then lifts the hoisting plate 3 upward to separate the upper mold 6 from the formed precast foundation. The upper mold 6 is then moved to the designated position by moving along the track frame 1 through the crossbeam 2.

[0025] When it is necessary to hoist the lower mold 20, the prefabricated product is taken out in advance, the sliding lifting stops at both ends are withdrawn and lowered, and then the hoisting unit is connected to the lower mold 20. The lower mold 20 is lifted and transferred laterally through the hoisting plate 3 and the crossbeam 2.

[0026] See Figure 2 As shown, one end of the push rod 8 that extends into the fixed seat 9 is fitted with a retaining ring that slides inside the fixed seat 9, and a spring is fitted on the outside of the push rod 8 between the fixed seat 9 and the retaining ring.

[0027] When the eccentric wheel 7 rotates and applies a pushing force to the arc-shaped end of the push rod 8, the push rod 8 slides inside the fixed seat 9. The push rod 8 drives the retaining ring to move synchronously, so that the retaining ring gradually compresses the spring 1 sleeved on the outside of the push rod 8. The spring 1 stores elastic potential energy during the compression process. At the same time, the push rod 8 drives the connecting piece 10 to move, so that the corresponding side mold piece gradually moves away from the lower mold piece 20, thereby completing the demolding action of the side mold piece.

[0028] See Figure 3As shown, the sliding lifting stop includes an adjustment cavity 12 located at the edge of the bearing seat 5. The bottom of the inner cavity of the adjustment cavity 12 is provided with a ramp 14, and a horizontally oriented electric cylinder 15 is installed on the inner wall of the adjustment cavity 12. The pushing end of the electric cylinder 15 is connected to a limiting frame 11 that limits movement within the adjustment cavity 12. A positioning plate 13 with an initial height not higher than the adjustment cavity 12 is movably installed within the limiting frame 11. The inclined side of the positioning plate 13 abuts against the ramp 14, and a spring 2 is sleeved between the bottom of the positioning plate 13 and the limiting frame 11. The positioning plate 13 extends into the notch at the edge of the lower mold 20 and is flush with the lower mold 20. The end of the adjustment cavity 12 is located below one side of the edge of the lower mold 20; this facilitates the entry of the hoisting unit and the clamping of the edge.

[0029] In the initial state, the electric cylinder 15 is in the retracted state, and the limiting frame 11 is located in the adjustment cavity 12 on the side away from the edge of the lower mold 20. At this time, the inclined side of the positioning plate 13 is in the lower position of the inclined platform 14, and the top of the positioning plate 13 is not higher than the adjustment cavity 12, so it will not protrude from the bearing surface of the bearing seat 5, and will not obstruct the insertion or lifting of the lower mold 20.

[0030] After the lower module 20 is placed inside the support seat 5, the pushing end of the electric cylinder 15 extends out, pushing the limiting frame 11 to move horizontally along the adjustment cavity 12 toward the edge of the lower module 20. As the limiting frame 11 moves forward, the inclined edge of the positioning plate 13 gradually slides to a higher position along the inclined platform 14, so that the positioning plate 13 gradually rises relative to the limiting frame 11 while moving horizontally with the limiting frame 11. The upper part of the two side positioning plates 13 gradually extends out of the adjustment cavity 12 and approaches the lower module 20, so that the lower module 20 is gradually adjusted to the middle position of the support seat 5, realizing the centering positioning of the lower module 20. The spring 2 generates elastic deformation with the relative movement of the positioning plate 13.

[0031] See Figure 4 As shown, the hoisting unit includes an adjusting screw 17 located inside the hoisting plate 3 and driven by a dual-axis motor. Each adjusting screw 17 has a moving plate 4 sleeved on its threaded end. A rotating seat 18 is rotatably mounted on the bottom inner side of the moving plate 4. A clamping cylinder 19 for clamping the upper mold 6 or the lower mold 20 is mounted on the inner side of the rotating seat 18. The tilting gap formed between the rotating seat 18 and the bottom surface of the hanging plate 3 is greater than the width of the lower mold 20; Inside the crossbeam 2 is a winding rod 16 driven by a winch motor and wound around the ropes at both ends.

[0032] After the dual-axis motor starts, it simultaneously drives the adjusting screws 17 on both sides inside the hanging plate 3 to rotate, so that the two moving plates 4 sleeved on the threaded ends of the corresponding adjusting screws 17 move closer or further apart along the hanging plate 3. When it is necessary to hoist the upper module 6 or the lower module 20, the distance between the two moving plates 4 is adjusted according to the width of the module to be hoisted, so that the two rotating seats 18 move to the two sides of the module to be hoisted respectively, so that the clamping cylinder 19 set inside the rotating seat 18 is opposite to the corresponding side of the module to be hoisted.

[0033] After the movable plate 4 is adjusted to the predetermined position, the two clamping cylinders 19 extend synchronously, so that the clamping ends of the clamping cylinders 19 respectively abut against the two sides of the upper mold 6 or the lower mold 20, clamping and fixing the mold to be hoisted from both sides. By adjusting the lead screw 17, the positions of the two movable plates 4 are adjusted synchronously, so that the hoisting unit can change the clamping distance according to the size of the upper mold 6 and the lower mold 20, so as to ensure that the clamping position matches the size of the mold.

[0034] After the module is clamped and stabilized, the winch motor drives the winding rod 16 inside the crossbeam 2 to rotate. The winding rod 16 simultaneously winds the lifting ropes at both ends, causing the two lifting ropes to shorten synchronously. This, in turn, drives the lifting plate 3 to move upward as a whole, thereby lifting the upper module 6 or lower module 20 clamped by the clamping cylinder 19 from the support seat 5. The lifting ropes at both ends are wound by the same winding rod 16, which helps to make the lifting plate 3 rise and fall at approximately the same time, reducing the likelihood of significant tilting of the lifting plate 3 during the lifting process.

[0035] When the lower mold 20 needs to be flipped, after the lower mold 20 is lifted off the support seat 5 and raised to a predetermined height, the lower mold 20 flips around the rotation center of the two rotating seats 18. Since the flipping gap formed between the rotating seat 18 and the bottom surface of the hanging plate 3 is greater than the width of the lower mold 20, the lower mold 20 has enough rotation space during the flipping process, avoiding the edge of the lower mold 20 from colliding or interfering with the bottom surface of the hanging plate 3, thereby providing space for the lower mold 20 to change from the mold cavity facing upward to the tilted state or the mold cavity facing downward.

[0036] After the flipping is completed, the lower mold 20 is moved along the two track frames 1 by the crossbeam 2 to the cleaning station, and the concrete impurities remaining inside the lower mold 20 are cleaned.

[0037] See Figure 1 , Figure 5 and Figure 6 As shown, a cleaning frame for supporting the upper module 6 and a cleaning seat 21 that enters after the support seat 5 is rotated 180 degrees are arranged sequentially along the sliding direction of the crossbeam 2 on one side of the support seat 5. The bottom surface of the inner cavity of the cleaning seat 21 is provided with a liquid storage tank 22. A guide rail 26 is installed on the top side wall of the liquid storage tank 22, and the liquid storage tank 22 stores cleaning liquid. An adjustment tube 23 is installed on the slider of the guide rail 26. The adjustment tube 23 is connected to the liquid storage tank 22 through a hose. A nozzle 24 is installed on the top and side of the adjustment tube 23. The nozzle 24 is used to spray cleaning liquid onto the inner wall of the lower mold 20 and soften the impurities adhering to the inner wall of the lower mold 20. Lifting cylinders 27 are installed at both ends of one side surface of the regulating pipe 23. The pushing end of the two lifting cylinders 27 is connected to the same upper scraper 25. The pushing end of each lifting cylinder 27 is fixed with a connecting plate 28 that slides along the vertical direction of the regulating pipe 23. An regulating cylinder 30 is installed on the inner side of the connecting plate 28, and a side scraper 29 pushed by the regulating cylinder 30 is provided on the outer side of the connecting plate 28.

[0038] After the precast foundation is demolded, the upper mold 6 is first lifted off the lower mold 20 using the hoisting unit, and then moved along the track frame 1 by the crossbeam 2 to transfer the upper mold 6 to the cleaning frame set on one side of the bearing seat 5 for subsequent cleaning or maintenance.

[0039] After the precast foundation is removed from the lower mold 20, the sliding lifting stop releases its restriction on the lower mold 20. The hoisting unit clamps both sides of the lower mold 20 and lifts it above the support seat 5 by winding the hoisting rope with the winding rod 16. The lower mold 20 is rotated 180 degrees with the help of the rotating seat 18, so that the lower mold 20, which was originally facing upwards, is now facing downwards. Then, the crossbeam 2 moves along the track frame 1 to hoist the rotated lower mold 20 above the cleaning seat 21, so that the lower mold 20 enters or covers the cleaning area of ​​the cleaning seat 21.

[0040] At the start of the cleaning operation, the cleaning fluid stored inside the storage tank 22 is delivered to the regulating pipe 23 via a hose and sprayed out by multiple nozzles 24 located on the top and sides of the regulating pipe 23. Since the lower mold 20 is rotated 180 degrees with its cavity facing downwards, the regulating pipe 23 can enter the cavity of the lower mold 20. The nozzles 24 on the top surface spray the cleaning fluid towards the inner top wall of the lower mold 20, while the nozzles 24 on the sides spray the cleaning fluid towards the inner side wall of the lower mold 20, so that the concrete residue, release agent residue, and other impurities adhering to the inner wall of the lower mold 20 cavity are fully soaked and softened.

[0041] During the spraying process, the guide rail 26 drives the slider to move along the top side wall of the liquid storage tank 22, and drives the regulating pipe 23 to move synchronously, so that the nozzle 24 set on the regulating pipe 23 can change the spraying position along the length of the lower mold 20, thereby expanding the coverage of the cleaning liquid and avoiding only localized spraying of the lower mold 20.

[0042] After the attached impurities are soaked and softened by the cleaning solution, the two lifting cylinders 27 operate synchronously, driving the same upper scraper 25 to rise and fall relative to the adjusting tube 23, so that the upper scraper 25 approaches and abuts against the inner top wall of the lower mold 20. As the guide rail 26 continues to drive the adjusting tube 23 to move along the inside of the lower mold 20, the upper scraper 25 moves synchronously along the inner top wall of the lower mold 20, thereby scraping off the softened attached impurities from the inner top wall.

[0043] At the same time, when the pushing end of the lifting cylinder 27 moves, the connecting plate 28 fixed on its pushing end slides synchronously along the vertical direction of the adjusting pipe 23, thereby driving the corresponding adjusting cylinder 30 and the side scraper 29 to adjust their height, so that the side scraper 29 can maintain the corresponding positional relationship with the upper scraper 25.

[0044] In use, this invention provides side molds that move with the connecting parts 10 on both sides of the upper mold 6. A servo motor drives the eccentric wheel 7 to rotate, causing the two eccentric ends of the eccentric wheel 7 to push the corresponding push rods 8 to move. This, in turn, causes the two connecting parts 10 to simultaneously separate the side molds from the lower mold 20. This transforms the side mold disassembly process from manual disassembly to mechanical synchronous demolding, reducing manual demolding operations and improving the demolding efficiency of the precast foundation mold. The separation action of the two side molds has good synchronicity, avoiding uneven stress on the precast foundation caused by one side demolding first while the other side remains attached, thereby reducing the pulling on the corners of the precast foundation. By setting sliding lifting stops on both sides of the bearing seat 5, the electric cylinder 15 drives the limiting frame 11 to move horizontally along the adjustment cavity 12. Through the inclined surface cooperation between the positioning plate 13 and the inclined platform 14, the horizontal displacement of the limiting frame 11 is converted into the vertical lifting of the positioning plate 13. As the positioning plate 13 moves towards the lower mold 20, it extends upward into the adjustment cavity 12, so that the lower mold 20 is pushed and limited by both sides. This allows the lower mold 20 to automatically adjust to the middle position of the bearing seat 5, improving the accuracy and stability of the installation position of the lower mold 20 and reducing the assembly error caused by the positional deviation of the lower mold 20 during subsequent mold closing, casting, and demolding. When the electric cylinder 15 retracts, the positioning plate 13 is hidden inside the bearing seat 5 while releasing the limitation on the lower mold 20, avoiding interference from the fixed stop structure on the placement and lifting of the lower mold 20. After the lower mold 20 is rotated 180 degrees by the hoisting unit, it is sent into the cleaning seat 21, so that the mold cavity of the lower mold 20 changes from an upward state to a downward state. On the one hand, it is convenient for the nozzle 24, upper scraper 25 and side scraper 29 inside the cleaning seat 21 to enter the mold cavity for cleaning. On the other hand, it allows the scraped concrete residue to be directly removed from the mold cavity under the action of gravity, reducing the possibility of impurities remaining or accumulating inside the lower mold 20 after cleaning. The cleaning method adopts the pre-softening of cleaning fluid and mechanical scraping by scraper. Two lifting cylinders 27 synchronously drive the upper scraper 25 to rise and fall. The upper scraper 25 actively adjusts the scraping height according to the position of the inner top wall of the lower mold 20 and maintains stable contact with the inner top wall of the lower mold 20 during cleaning, thereby improving the removal effect of impurities in the top area. After cleaning, the upper scraper 25 can actively descend and exit to slide and remove impurities that have fallen on the liquid storage tank 22. The height of the side scraper 29 is adjusted synchronously with the upper scraper 25, so that the top scraping structure and the side scraping structure can synchronously change their working positions according to the internal space of the lower mold 20, improving the coordination between cleaning actions in different areas.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A tilting and hoisting device for precast foundation molds, characterized in that: It includes two track frames (1), a crossbeam (2) is slidably installed between the two track frames (1), a bearing seat (5) with a U-shaped structure placed on the ground is provided directly below the crossbeam (2), a lower mold (20) is installed in the bearing seat (5), an upper mold (6) is matched and installed on the upper end face of the lower mold (20), and a lifting plate (3) is connected to the bottom two ends of the crossbeam (2) by a lifting rope. A lifting unit for lifting the upper mold (6) or the lower mold (20) is installed on the bottom surface of the lifting plate (3). The bottom surface of the bearing seat (5) is provided with sliding lifting stops at both ends to limit the lower module (20); The upper surface of the upper mold (6) is symmetrically provided with two connecting parts (10) that slide along the top surface of the upper mold (6). The bottom surface of the connecting parts (10) is connected to a side mold that blocks the side of the lower mold (20). A fixed seat (9) is provided on the upper surface of the upper mold (6) and on one side of the connector (10). The fixed seat (9) is fixed to the upper mold (6). A push rod (8) extending into the fixed seat (9) is connected to the top side of the connector (10). The end of the push rod (8) is arc-shaped. An eccentric wheel (7) driven by a servo motor is rotatably installed in the middle of the upper surface of the upper mold (6). The two eccentric ends of the eccentric wheel (7) rotate and abut against the push rod (8) on the corresponding side. The two side molds are separated from the corresponding side of the lower mold (20).

2. The tilting and hoisting device for a precast foundation mold according to claim 1, characterized in that, One end of the push rod (8) that extends into the fixed seat (9) is fitted with a retaining ring that slides inside the fixed seat (9), and a spring is fitted on the outside of the push rod (8) between the fixed seat (9) and the retaining ring.

3. The tilting and hoisting device for a precast foundation mold according to claim 1, characterized in that, The sliding lifting stop includes an adjustment cavity (12) located at the edge of the bearing seat (5). The bottom of the inner cavity of the adjustment cavity (12) is provided with a ramp (14), and the inner wall of the adjustment cavity (12) is equipped with a horizontally oriented electric cylinder (15). The pushing end of the electric cylinder (15) is connected to a limiting frame (11) that limits movement within the adjustment cavity (12). A positioning plate (13) with an initial height not higher than the adjustment cavity (12) is movably installed within the limiting frame (11). The inclined side of the positioning plate (13) abuts against the ramp (14), and a spring is sleeved between the bottom of the positioning plate (13) and the limiting frame (11). The positioning plate (13) extends into the notch at the edge of the lower mold (20) and is flush with the lower mold (20).

4. The tilting and hoisting device for a precast foundation mold according to claim 3, characterized in that, The end of the adjustment cavity (12) is located below the edge of the lower mold (20).

5. The tilting and hoisting device for a precast foundation mold according to claim 1, characterized in that, The hoisting unit includes an adjusting screw (17) located inside the hoisting plate (3) and driven by a dual-axis motor. Each adjusting screw (17) has a moving plate (4) sleeved on its threaded end. A rotating seat (18) is rotatably mounted on the bottom inner side of the moving plate (4). A clamping cylinder (19) for clamping the upper mold (6) or the lower mold (20) is installed on the inner side of the rotating seat (18). The turning gap formed between the rotating seat (18) and the bottom surface of the hanging plate (3) is greater than the width of the lower mold (20).

6. The tilting and hoisting device for a precast foundation mold according to claim 1, characterized in that, The inside of the crossbeam (2) is a winding rod (16) driven by a winch motor and wound around the ropes at both ends.

7. The tilting and hoisting device for a precast foundation mold according to claim 1, characterized in that, The support seat (5) is provided with a cleaning rack for supporting the upper module (6) and a cleaning seat (21) that enters after the support seat (5) is rotated 180 degrees along the sliding direction of the crossbeam (2).

8. The tilting and hoisting device for a precast foundation mold according to claim 7, characterized in that, The bottom surface of the inner cavity of the cleaning seat (21) is provided with a liquid storage tank (22). A guide rail (26) is installed on the top side wall of the liquid storage tank (22), and the liquid storage tank (22) stores cleaning liquid. An adjustment tube (23) is installed on the slider of the guide rail (26). The adjustment tube (23) is connected to the liquid storage tank (22) through a hose. A nozzle (24) is installed on the top and side of the adjustment tube (23). The nozzle (24) is used to spray cleaning liquid onto the inner wall of the lower mold (20) and soften the impurities adhering to the inner wall of the lower mold (20).

9. The tilting and hoisting device for a precast foundation mold according to claim 8, characterized in that, Lifting cylinders (27) are installed at both ends of one side surface of the regulating pipe (23). The pushing ends of the two lifting cylinders (27) are connected to the same upper scraper (25). Each lifting cylinder (27) has a connecting plate (28) that slides along the vertical direction of the regulating pipe (23) fixed at its pushing end. An regulating cylinder (30) is installed on the inner side of the connecting plate (28), and a side scraper (29) pushed by the regulating cylinder (30) is provided on the outer side of the connecting plate (28).

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