Lifting frame for construction of sliding formwork of squat silo and using method of lifting frame

Abstract

The invention discloses a lifting frame for squat silo sliding formwork construction and a using method of the lifting frame, and relates to the technical field of squat silo construction. According to the lifting frame for squat silo sliding formwork construction and the using method of the lifting frame, the lifting frame comprises a door-shaped frame, the door-shaped frame comprises two vertical legs, the top ends of the vertical legs are fixedly connected with a cross beam, the outer surfaces of the vertical legs are fixedly connected with fixing sleeves, fixing channel steel and formwork supporting devices, and one sides of the vertical legs are fixedly connected with rod body supporting devices; a lifting jack is fixedly connected to the middle of the upper surface of the cross beam, a supporting rod is arranged in the lifting jack, a rod body cleaning device is fixedly connected to the upper surface of the cross beam, the formwork supporting device comprises a fixing base, and a threaded rod is in threaded connection with the interior of the fixing base; through cooperation of multiple devices of adjustable formwork supporting, rod body multi-point rolling constraint, automatic cleaning and online flaw detection, the construction efficiency, safety and forming quality of the squat silo slip form can be remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of shallow circular silo construction technology, specifically to a lifting frame for shallow circular silo sliding formwork construction and its usage method. Background Technology

[0002] Shallow silo sliding formwork construction is a concrete pouring process that uses a hydraulic system to drive the continuous sliding of formwork, making it particularly suitable for the construction of vertical thin-walled structures such as silos. This technology achieves continuous concrete pouring and shaping through an integrated formwork system, steel operating platform, and hydraulic lifting device, featuring high construction efficiency and strong structural integrity. During construction, the formwork system requires high-precision steel plate assembly, strict control of upper and lower opening dimensional errors, and the use of slight tapers to prevent concrete adhesion. The operating platform is designed as a double-layered truss structure with comprehensive safety protection facilities. The hydraulic lifting system consists of multiple sets of synchronous jacks, high-strength support rods, and an intelligent control system to ensure stability during the lifting process. Concrete pouring must be carried out symmetrically in layers, with strict control of slump and initial setting time, and verticality is corrected in real time using a laser monitoring system.

[0003] Shallow circular silo sliding formwork construction is a concrete forming process that uses a hydraulic lifting system to drive the continuous sliding of the formwork. It is widely used in the construction of vertical cylindrical structures such as silos and grain silos. Although this process has the advantages of high construction efficiency and good overall integrity, there are still several technical challenges in practical applications: First, the traditional lifting frame provides relatively simple support for the formwork, relying solely on connecting rods. During multiple lifting and concrete pouring processes, the connecting rods are frequently subjected to stress, which may lead to a decline in structural performance or even deformation and breakage. Furthermore, the formwork may undergo local deformation under the lateral pressure of the concrete, easily resulting in uneven silo wall thickness and poor surface quality. Second, the support rods serving as climbing tracks lack effective lateral constraints and condition monitoring under conditions of high slenderness ratio and frequent loads, making them prone to bending, instability, or even breakage, posing safety hazards. Third, during construction, dirt may adhere to the surface of the support rods. If not cleaned in time, it will seriously affect the climbing performance of the jacks and may even cause hydraulic system failure. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a lifting frame for the construction of sliding formwork in shallow circular silos and its usage method, thereby solving the problems mentioned in the background art, such as the single support method of traditional lifting frames leading to formwork deformation, the lack of constraint on support rods leading to bending, and dirt adhering to support rods affecting the jack's climbing ability.

[0005] To solve the above problems, the present invention provides the following technical solution: a lifting frame for shallow circular silo sliding formwork construction and its usage method, comprising a portal frame, the portal frame including two legs, a crossbeam fixedly connected to the top of each leg, a fixing sleeve, a fixing channel steel, and a formwork support device fixedly connected to the outer surface of each leg, a rod support device fixedly connected to one side of each leg, a jack fixedly connected to the middle of the upper surface of the crossbeam, a support rod provided inside the jack, a rod cleaning device fixedly connected to the upper surface of the crossbeam, the formwork support device including a fixing seat, a threaded rod threadedly connected inside the fixing seat, and the rod support device including two... The main support rod has a secondary support rod fixedly connected to its outer surface. Both the main support rod and the secondary support rod have clamps fixedly connected to their ends. A ball bearing is rotatably mounted on the concave surface of the clamp. The rod cleaning device includes a fixed shell. A fixed frame, a fixed plate, and a fixed rod are fixedly connected to the inner wall of the fixed shell. An internal gear is rotatably mounted inside the fixed frame. An L-shaped connecting rod is fixedly connected to the lower surface of the internal gear. An annular cleaning brush is fixedly connected to the horizontal end of the L-shaped connecting rod. A connecting sleeve is fixedly connected to the end of the fixed rod. A vertical rod is fixedly connected to the upper surface of the connecting sleeve. An annular plate is fitted onto the outer surface of the vertical rod. An annular guide plate is fixedly connected to the outer edge of the annular plate.

[0006] Preferably, a connecting rod is fixedly connected inside the fixed channel steel, and an outer template and an inner template are provided between the two upright legs. A ring is fixedly connected to the outer surface of the outer template and the inner surface of the inner template, and the ring is fixedly connected to the connecting rod.

[0007] Preferably, a connecting column is rotatably connected to the end of the threaded rod, a support plate is fixedly connected to the end of the connecting column away from the threaded rod, a pressure sensor is fixedly connected to the side of the support plate away from the connecting column, the outer surface of the fixed seat is fixedly connected to the outer surface of the upright leg, a handwheel is fixedly connected to the end of the threaded rod away from the connecting column, a reinforcing plate is fixedly connected to the outer surface of the connecting column, and the edge of the reinforcing plate is fixedly connected to the outer surface of the support plate.

[0008] Preferably, sliders are fixedly connected to both the upper and lower sides of the connecting column, guide grooves are provided at the top and bottom of the inner cavity of the fixing seat, the outer surface of the slider is slidably disposed inside the guide groove, and an indicator light is fixedly connected to the side of the support plate away from the pressure sensor.

[0009] Preferably, the rod support device is disposed between the two legs. A first mounting plate is fixedly connected to the end of the main support rod away from the clamping plate. Insert plates are fixedly connected to the top and bottom of the first mounting plate. The outer surface of the insert plate is adapted to the slot on the surface of the leg. An audible and visual alarm is fixedly connected to the outer surface of the clamping plate. The concave surfaces of the two clamping plates form a circle. The support rod passes through the space between the two clamping plates. The outer surface of the ball bearing is in contact with the outer surface of the support rod. An ultrasonic flaw detector is fixedly connected to the concave surface of the clamping plate. The ball bearing and the ultrasonic flaw detector are both distributed in a ring around the central axis of the support rod.

[0010] Preferably, support legs are fixedly connected to both sides of the fixed shell, and a second mounting plate is fixedly connected to the bottom end of the support legs. The second mounting plate is fixedly connected to the upper surface of the crossbeam by bolts. A motor is fixedly connected to the outer surface of the fixed shell, and a rotating shaft is fixedly connected to the output end of the motor. The outer surface of the rotating shaft extends into the inner cavity of the fixed shell, and a first bevel gear is fixedly connected to the end of the rotating shaft away from the motor.

[0011] Preferably, a first rotating rod is rotatably connected to the lower surface of the fixed plate, a second bevel gear is fixedly connected to the outer surface of the first rotating rod, the first bevel gear meshes with the second bevel gear, an external gear is fixedly connected to the bottom end of the first rotating rod, the internal gear meshes with the external gear, the cleaning part of the annular cleaning brush contacts the outer surface of the support rod, a first synchronous pulley is fixedly connected to the outer surface of the rotating shaft, a second rotating rod is rotatably connected to the inner wall of the fixed shell, a second synchronous pulley is fixedly connected to the outer surface of the second rotating rod, and a synchronous belt is provided on the outer surfaces of the first and second synchronous pulleys.

[0012] Preferably, a cam is fixedly connected to the end of the second rotating rod, the cam is located below the annular plate, a top plate is fixedly connected to the top of the upright, a spring is fixedly connected to the lower surface of the annular plate, the bottom end of the spring is fixedly connected to the upper surface of the connecting sleeve, and the annular guide plate is located below the annular cleaning brush.

[0013] Preferably, the outer surface of the annular guide plate is provided with a through groove, the second rotating rod and the fixing rod both pass through the through groove, an annular rubber pad is fixedly connected to the top of the annular guide plate, the inner surface of the annular rubber pad is in contact with the outer surface of the support rod, an annular collecting groove is threadedly connected to the outer surface of the connecting sleeve, the annular collecting groove is located below the annular guide plate, and a handle is fixedly connected to the lower surface of the annular collecting groove.

[0014] A method for using a lifting frame for shallow circular silo sliding formwork construction includes the following steps: S1. Assemble the lifting frame system: Erect the portal frame on the shallow circular silo foundation, install connecting rods, template support devices, pole support devices, jacks and pole cleaning devices on the portal frame, and fix the bottom of the support rods to the foundation; S2. Install the template system: Connect the outer template and the inner template with the ring and connecting rod, adjust the template taper to ensure that the top opening is small and the bottom opening is large, and the single-sided inclination is 0.1% to 0.3% of the template height. Rotate the handwheel to support the template with the support plate. S3. Concrete Pouring and Slipforming Operation: After completing all pre-construction preparations, concrete is poured in layers between the outer and inner formwork. When slipforming is possible, the jacks are activated to lift the formwork system along the support rods. During slipforming, the motor of the rod cleaning device drives the annular cleaning brush through the gear set to clean the surface of the support rods. The rod support device provides multi-point support to the support rods through the main support rods and sub-support rods. At the same time, the support rods are monitored in real time for cracks by an ultrasonic flaw detector.

[0015] This invention provides a lifting frame for shallow circular silo sliding formwork construction and its usage method. It has the following beneficial effects: 1. The lifting frame and its usage method for shallow circular silo sliding formwork construction, by setting an adjustable formwork support device, uses a handwheel to drive the threaded rod to move forward and backward, so that the support plate is tightly against the formwork. Combined with pressure sensors to monitor the support force in real time, it provides controllable rigid support for the inner and outer formwork. This not only effectively suppresses the local deformation of the formwork during concrete pouring and ensures the cross-sectional accuracy and construction quality of the silo wall, but more importantly, it directly transfers part of the load borne by the formwork to the uprights of the portal frame, providing effective stress diversion for the upper and lower connecting rods, significantly reducing the risk of fatigue damage to the connecting rods under alternating loads and extending their service life.

[0016] 2. The lifting frame and its usage method for shallow circular silo sliding formwork construction utilize a rod support device installed between two upright legs. This device, with its ball-bearing clamping structure, provides multi-point radial constraint to the support rod. Simultaneously, rolling friction reduces the resistance of the support device to the support rod during lifting. This design provides uniform radial constraint to the slender support rod, effectively preventing buckling, instability, or skewing during lifting. It ensures the verticality of the support rod and the smooth sliding of the formwork, thereby guaranteeing construction accuracy and significantly extending the service life of the support rod.

[0017] 3. The lifting frame and its usage method for shallow circular silo sliding formwork construction utilize a motor-driven rod cleaning device that combines the rotating brush of an annular cleaning brush with the high-frequency vibration of an annular guide plate to automatically and continuously remove dirt adhering to the surface of the support rod. This ensures that the swept-down dirt falls completely into the annular collection trough below, effectively avoiding problems such as jack climbing blockage, hydraulic system abnormalities, or excessive wear of support rods caused by dirt accumulation. This guarantees a smooth and efficient lifting process and provides a key guarantee for the reliable operation of the system.

[0018] 4. The lifting frame and its usage method for shallow circular silo sliding formwork construction, by integrating a ring-shaped ultrasonic flaw detector and a matching audible and visual alarm on the clamping plate of the pole support device, realizes real-time online non-destructive monitoring of the health status of the support pole. This design can continuously detect micro-fatigue cracks or damage that may occur in the support pole due to alternating loads during the slipform construction process. Once a defect signal is identified, an audible and visual alarm is immediately triggered, providing operators with intuitive and timely danger warnings. This allows workers to quickly stop work and take emergency measures such as replacement or reinforcement, greatly improving the safety and initiative of the construction process and preventing the occurrence of major safety accidents. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lifting frame of the present invention in use; Figure 3 This is a schematic diagram of the portal frame structure of the present invention; Figure 4 This is a schematic diagram of the template support device of the present invention; Figure 5 This is a cross-sectional view of the template support device of the present invention; Figure 6 This is a schematic diagram of the structure of the rod support device of the present invention; Figure 7 This is a cross-sectional view of the two clamping plates of the present invention; Figure 8 This is a schematic diagram of the rod cleaning device of the present invention; Figure 9 This is a cross-sectional view of the fixing shell of the present invention; Figure 10 This is an enlarged structural schematic diagram of invention A; Figure 11 This is a schematic diagram of the connecting sleeve and annular guide plate of the present invention.

[0020] In the diagram: 1. Portal frame; 2. Vertical leg; 3. Horizontal beam; 4. Fixing sleeve; 5. Fixing channel steel; 6. Formwork support device; 7. Connecting rod; 8. Outer formwork; 9. Inner formwork; 10. Enclosure ring; 11. Jack; 12. Support rod; 13. Rod support device; 14. Rod cleaning device; 15. Fixed seat; 16. Threaded rod; 17. Handwheel; 18. Connecting column; 19. Support plate; 20. Reinforcing plate; 21. Guide groove; 22. Sliding block; 23. Pressure sensor; 24. Indicator light; 25. Main support rod; 26. Sub-support rod; 27. First mounting plate; 28. Insert plate; 29. ​​Clamping plate; 30. Audible and visual alarm; 31. Ball bearing; 32. Ultrasonic... 33. Flaw detector; 34. Fixed housing; 35. Support leg; 36. Second mounting plate; 37. Motor; 38. Fixing frame; 39. Internal gear; 40. Rotating shaft; 41. First bevel gear; 42. Fixing plate; 43. First rotating rod; 44. Second bevel gear; 45. External gear; 46. L-shaped connecting rod; 47. Annular cleaning brush; 48. First synchronous pulley; 49. Second rotating rod; 50. Second synchronous pulley; 51. Synchronous belt; 52. Cam; 53. Fixing rod; 54. Connecting sleeve; 55. Upright pole; 56. Annular plate; 57. Top plate; 58. Spring; 59. Annular guide plate; 60. Through groove; 61. Annular rubber pad; 62. Annular collection groove; 63. Handle. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose. Example

[0022] like Figures 1-11As shown, the present invention provides a technical solution: a lifting frame for the construction of a shallow circular silo sliding formwork and its usage method, comprising a portal frame 1, the portal frame 1 including two legs 2, a crossbeam 3 fixedly connected to the top of the legs 2, a fixing sleeve 4, a fixing channel steel 5 and a formwork support device 6 fixedly connected to the outer surface of the legs 2, a rod support device 13 fixedly connected to one side of the legs 2, a jack 11 fixedly connected to the middle of the upper surface of the crossbeam 3, a support rod 12 provided inside the jack 11, a rod cleaning device 14 fixedly connected to the upper surface of the crossbeam 3, the formwork support device 6 including a fixing seat 15, a threaded rod 16 threadedly connected inside the fixing seat 15, and the rod support device 13 including two main support rods 25, the outer surface of the main support rods 25... The main support rod 25 and the end of the branch support rod 26 are fixedly connected to a clamping plate 29. The concave surface of the clamping plate 29 is rotatably provided with a ball bearing 31. The rod cleaning device 14 includes a fixed shell 33. The inner wall of the fixed shell 33 is fixedly connected to a fixed frame 37, a fixed plate 41 and a fixed rod 52. The fixed frame 37 is rotatably provided with an internal gear 38. The lower surface of the internal gear 38 is fixedly connected to an L-shaped connecting rod 45. The end of the horizontal part of the L-shaped connecting rod 45 is fixedly connected to an annular cleaning brush 46. The end of the fixed rod 52 is fixedly connected to a connecting sleeve 53. The upper surface of the connecting sleeve 53 is fixedly connected to a vertical rod 54. The outer surface of the vertical rod 54 is fitted with an annular plate 55. The outer edge of the annular plate 55 is fixedly connected to an annular guide plate 58.

[0023] The fixed channel steel 5 is internally fixedly connected with a connecting rod 7. An outer template 8 and an inner template 9 are provided between the two upright legs 2. A ring 10 is fixedly connected to the outer surface of the outer template 8 and the inner surface of the inner template 9. The ring 10 is fixedly connected to the connecting rod 7.

[0024] A connecting post 18 is rotatably connected to the end of the threaded rod 16. A support plate 19 is fixedly connected to the end of the connecting post 18 away from the threaded rod 16. A pressure sensor 23 is fixedly connected to the side of the support plate 19 away from the connecting post 18. The outer surface of the fixed seat 15 is fixedly connected to the outer surface of the upright leg 2. A handwheel 17 is fixedly connected to the end of the threaded rod 16 away from the connecting post 18. A reinforcing plate 20 is fixedly connected to the outer surface of the connecting post 18. The edge of the reinforcing plate 20 is fixedly connected to the outer surface of the support plate 19.

[0025] The upper and lower sides of the connecting column 18 are fixedly connected to sliders 22. The top and bottom of the inner cavity of the fixed base 15 are provided with guide grooves 21. The outer surface of the slider 22 is slidably disposed inside the guide groove 21. An indicator light 24 is fixedly connected to the side of the support plate 19 away from the pressure sensor 23.

[0026] The pole support device 13 is set between the two upright legs 2. The end of the main support rod 25 away from the clamping plate 29 is fixedly connected to the first mounting plate 27. The top and bottom of the first mounting plate 27 are fixedly connected to the insert plate 28. The outer surface of the insert plate 28 is adapted to the slot on the surface of the upright leg 2. The outer surface of the clamping plate 29 is fixedly connected to the sound and light alarm 30. The concave surfaces of the two clamping plates 29 form a circle. The support rod 12 passes through the two clamping plates 29. The outer surface of the ball bearing 31 is in contact with the outer surface of the support rod 12. The concave surface of the clamping plate 29 is fixedly connected to the ultrasonic flaw detector 32. The ball bearing 31 and the ultrasonic flaw detector 32 are both distributed in a ring around the central axis of the support rod 12.

[0027] Support legs 34 are fixedly connected to both sides of the fixed housing 33. A second mounting plate 35 is fixedly connected to the bottom end of the support legs 34. The second mounting plate 35 is fixedly connected to the upper surface of the crossbeam 3 by bolts. A motor 36 is fixedly connected to the outer surface of the fixed housing 33. A rotating shaft 39 is fixedly connected to the output end of the motor 36. The outer surface of the rotating shaft 39 extends into the inner cavity of the fixed housing 33. A first bevel gear 40 is fixedly connected to the end of the rotating shaft 39 away from the motor 36.

[0028] A first rotating rod 42 is rotatably connected to the lower surface of the fixed plate 41. A second bevel gear 43 is fixedly connected to the outer surface of the first rotating rod 42. The first bevel gear 40 meshes with the second bevel gear 43. An external gear 44 is fixedly connected to the bottom end of the first rotating rod 42. An internal gear 38 meshes with the external gear 44. The cleaning part of the annular cleaning brush 46 contacts the outer surface of the support rod 12. A first synchronous wheel 47 is fixedly connected to the outer surface of the rotating shaft 39. A second rotating rod 48 is rotatably connected to the inner wall of the fixed shell 33. A second synchronous wheel 49 is fixedly connected to the outer surface of the second rotating rod 48. A synchronous belt 50 is provided on the outer surfaces of the first synchronous wheel 47 and the second synchronous wheel 49.

[0029] The end of the second rotating rod 48 is fixedly connected to a cam 51, which is located below the annular plate 55. The top of the upright rod 54 is fixedly connected to a top plate 56. The lower surface of the annular plate 55 is fixedly connected to a spring 57, and the bottom end of the spring 57 is fixedly connected to the upper surface of the connecting sleeve 53. The annular guide plate 58 is located below the annular cleaning brush 46.

[0030] The outer surface of the annular guide plate 58 is provided with a through groove 59. The second rotating rod 48 and the fixing rod 52 both pass through the through groove 59. An annular rubber pad 60 is fixedly connected to the top of the annular guide plate 58. The inner surface of the annular rubber pad 60 is in contact with the outer surface of the support rod 12. An annular collecting groove 61 is threadedly connected to the outer surface of the connecting sleeve 53. The annular collecting groove 61 is located below the annular guide plate 58. A handle 62 is fixedly connected to the lower surface of the annular collecting groove 61.

[0031] A method for using a lifting frame for shallow circular silo sliding formwork construction includes the following steps: S1. Assemble the lifting frame system: Erect the portal frame 1 on the shallow circular silo foundation, install the connecting rod 7, template support device 6, pole support device 13, jack 11 and pole cleaning device 14 on the portal frame 1, and fix the bottom end of the support rod 12 to the foundation; S2. Install the template system: Connect the outer template 8 and the inner template 9 to the connecting rod 7 via the ring 10, adjust the template taper to ensure that the top opening is small and the bottom opening is large, and the single-sided inclination is 0.1% to 0.3% of the template height. Rotate the handwheel 17 to make the support plate 19 support the template. S3. Concrete pouring and slipforming operation: After all pre-construction preparations are completed, concrete is poured in layers between the outer formwork 8 and the inner formwork 9. When slipforming is possible, the jack 11 is started to drive the lifting frame to lift the formwork system along the support rod 12. During slipforming, the motor 36 of the rod cleaning device 14 drives the annular cleaning brush 46 through the gear set to clean the surface of the support rod 12. The rod support device 13 provides multi-point support for the support rod 12 through the main support rod 25 and the sub-support rod 26. At the same time, the ultrasonic flaw detector 32 monitors in real time whether cracks appear in the support rod 12.

[0032] The working principle of the above embodiments: The hydraulic jacks 11 periodically climb along the vertical support rods 12, lifting the portal frame 1 as a whole. The portal frame 1 is connected to the inner formwork 9 and outer formwork 8 via fixed channel steel 5 and connecting rods 7 on its two side legs 2, thus pulling the outer formwork 8 and inner formwork 9 upwards synchronously. This achieves coordinated operation of continuous layered concrete pouring and continuous formwork lifting. During this process, two sets of formwork support devices 6 are installed on each lifting frame to provide support for the inner formwork 9 and outer formwork 8 respectively. The formwork support devices 6 adopt an adjustable structure before pouring concrete between the inner formwork 9 and outer formwork 8. The two sets of formwork support devices 6 are positioned so that the support parts of the inner formwork 9 and the outer formwork 8 are respectively placed against the inner side of the inner formwork 9 and the outer side of the outer formwork 8. During the concrete pouring process, the formwork support devices 6 provide rigid support for the inner formwork 9 and the outer formwork 8 to prevent the inner formwork 9 and the outer formwork 8 from undergoing large deformation under the impact of the concrete. By setting the rod support device 13 between the two upright legs 2 of the lifting frame, the support rod 12 is provided with multi-point support to prevent the support rod 12 from bending and affecting the lifting of the formwork. By setting the rod cleaning device 14, the surface of the support rod 12 is cleaned to prevent dirt attached to the surface of the support rod 12 from affecting the lifting of the jack 11.

[0033] During pre-construction preparations using the template support device 6, the operator drives the threaded rod 16 to rotate and advance towards the outer template 8 or inner template 9 by rotating the handwheel 17. Under the constraint of the slider 22 and the guide groove 21, the connecting column 18 pushes the support plate 19 to move linearly towards the outer template 8 or inner template 9 until it is tightly pressed against the surface of the outer template 8 or inner template 9. The magnitude of the support force is monitored in real time by the pressure sensor 23. When the support force reaches a suitable threshold, the indicator light 24 lights up to remind the operator to stop rotating the handwheel 17. By applying controllable rigid support to the template, the local rigidity of the template system is effectively enhanced.

[0034] When installing the rod support device 13, the operator fixes the device between the two legs 2 using the first mounting plate 27 and the insert plate 28. The insert plate 28 is inserted into the corresponding slot on the leg 2, and the first mounting plate 27 is fixed with bolts. The support rod 12 passes through the center of the circular space formed by the concave surfaces of the two clamping plates 29. Multiple ball bearings 31 distributed in a ring within the concave surfaces of the clamping plates 29 form rolling contact with the outer surface of the support rod 12. This rolling friction greatly reduces the frictional resistance experienced by the support rod 12 during the lifting process of the jack 11, while providing uniform multi-point radial constraint, effectively preventing the support rod 12 from buckling or tilting during the lifting process and ensuring its verticality. Straightness is ensured, thus guaranteeing the smooth sliding of the template and extending the service life of the support rod 12. The ultrasonic flaw detector 32, embedded in the concave surface of the clamping plate 29, is also arranged in a ring. Its monitoring head is always aligned with the surface of the support rod 12. During construction, the ultrasonic flaw detector 32 performs real-time, online non-destructive testing on the support rod 12, continuously monitoring whether the rod body has micro-fatigue cracks or damage due to alternating loads. Once a crack or other defect signal is detected, the device will immediately trigger the audible and visual alarm 30, emitting a sharp alarm and flashing lights, providing operators with intuitive and timely danger warnings, enabling workers to immediately stop work and take replacement or reinforcement measures, greatly improving the safety and reliability of the construction process.

[0035] During operation of the rod cleaning device 14, the motor 36 drives the rotating shaft 39 to rotate, which in turn drives the first bevel gear 40 to rotate. The first bevel gear 40, in conjunction with the meshing second bevel gear 43, transmits power to the first rotating rod 42, thereby driving the external gear 44 fixed at the bottom of the first rotating rod 42 to rotate. The external gear 44 meshes with a large internal gear 38, and power is transmitted to the internal gear 38. Since the internal gear 38 is connected to the annular cleaning brush 46 through the L-shaped connecting rod 45, the rotation of the internal gear 38 is ultimately converted into the circumferential motion of the annular cleaning brush 46 around the support rod 12. The bristles of the annular cleaning brush 46 are in close contact with the outer surface of the support rod 12. Under its high-speed rotation and brushing, the dust and other dirt adhering to the surface of the support rod 12 are fully removed. The cleaned dirt falls downward onto the annular guide plate 58 and along... The material falls into the annular collection trough 61 through the conical inclined surface of the annular guide plate 58. At the same time, the first synchronous pulley 47, fixed on the rotating shaft 39, transmits power to the second synchronous pulley 49 through the synchronous belt 50, thereby driving the second rotating rod 48 and the cam 51 at its end to rotate continuously. The rotating cam 51 periodically pushes up the annular plate 55, which is fixedly connected to the annular guide plate 58, and stretches the spring 57. When the cam 51 rotates past the highest point, the annular plate 55 and the annular guide plate 58 move rapidly downward under the restoring force of the spring 57, generating high-frequency vibration. This high-frequency vibration effect fully shakes off the residual dirt remaining on the surface of the annular guide plate 58, so that the dirt can fall completely into the annular collection trough 61. The operator can periodically unscrew the annular collection trough 61 through the handle 62 to clean it, thereby maintaining the continuous and effective operation of the device.

[0036] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A lifting frame for shallow circular silo sliding formwork construction, comprising a portal frame (1), characterized in that: The portal frame (1) includes two legs (2). A crossbeam (3) is fixedly connected to the top of the legs (2). A fixing sleeve (4), a fixing channel steel (5), and a template support device (6) are fixedly connected to the outer surface of the legs (2). A rod support device (13) is fixedly connected to one side of the legs (2). A jack (11) is fixedly connected to the middle of the upper surface of the crossbeam (3). A support rod (12) is provided inside the jack (11). A rod cleaning device (14) is fixedly connected to the upper surface of the crossbeam (3). The template support device (6) includes a fixing seat (15). A threaded rod (16) is threadedly connected inside the fixing seat (15). The rod support device (13) includes two main support rods (25). A branch support rod (26) is fixedly connected to the outer surface of the main support rod (25). The main support rod (25) and the branch support rod (26) are connected to the branch support rod (26). The ends of the support rod (26) are all fixedly connected to the clamp plate (29). The concave surface of the clamp plate (29) is rotatably provided with a ball bearing (31). The rod cleaning device (14) includes a fixed shell (33). The inner wall of the fixed shell (33) is fixedly connected to a fixed frame (37), a fixed plate (41) and a fixed rod (52). The fixed frame (37) is rotatably provided with an internal gear (38). The lower surface of the internal gear (38) is fixedly connected to an L-shaped connecting rod (45). The end of the horizontal part of the L-shaped connecting rod (45) is fixedly connected to an annular cleaning brush (46). The end of the fixed rod (52) is fixedly connected to a connecting sleeve (53). The upper surface of the connecting sleeve (53) is fixedly connected to a vertical rod (54). The outer surface of the vertical rod (54) is fitted with an annular plate (55). The outer edge of the annular plate (55) is fixedly connected to an annular guide plate (58).

2. The lifting frame for shallow circular silo sliding formwork construction according to claim 1, characterized in that: The fixed channel steel (5) is internally fixedly connected to a connecting rod (7), and an outer template (8) and an inner template (9) are provided between the two legs (2). A ring (10) is fixedly connected to the outer surface of the outer template (8) and the inner surface of the inner template (9). The ring (10) is fixedly connected to the connecting rod (7).

3. The lifting frame for shallow circular silo sliding formwork construction according to claim 1, characterized in that: The end of the threaded rod (16) is rotatably connected to a connecting column (18). The end of the connecting column (18) away from the threaded rod (16) is fixedly connected to a support plate (19). The side of the support plate (19) away from the connecting column (18) is fixedly connected to a pressure sensor (23). The outer surface of the fixed seat (15) is fixedly connected to the outer surface of the upright leg (2). The end of the threaded rod (16) away from the connecting column (18) is fixedly connected to a handwheel (17). The outer surface of the connecting column (18) is fixedly connected to a reinforcing plate (20). The edge of the reinforcing plate (20) is fixedly connected to the outer surface of the support plate (19).

4. A lifting frame for shallow circular silo sliding formwork construction according to claim 3, characterized in that: The upper and lower sides of the connecting column (18) are fixedly connected to sliders (22), the top and bottom of the inner cavity of the fixed seat (15) are provided with guide grooves (21), the outer surface of the slider (22) is slidably disposed inside the guide groove (21), and the support plate (19) is fixedly connected to an indicator light (24) on the side away from the pressure sensor (23).

5. A lifting frame for shallow circular silo sliding formwork construction according to claim 1, characterized in that: The rod support device (13) is set between the two legs (2). The end of the main support rod (25) away from the clamp (29) is fixedly connected to the first mounting plate (27). The top and bottom of the first mounting plate (27) are fixedly connected to the insert plate (28). The outer surface of the insert plate (28) is adapted to the slot on the surface of the leg (2). The outer surface of the clamp (29) is fixedly connected to the sound and light alarm (30). The concave surfaces of the two clamps (29) form a circle. The support rod (12) passes through the two clamps (29). The outer surface of the ball (31) is in contact with the outer surface of the support rod (12). The concave surface of the clamp (29) is fixedly connected to the ultrasonic flaw detector (32). The ball (31) and the ultrasonic flaw detector (32) are both distributed in a ring around the central axis of the support rod (12).

6. A lifting frame for shallow circular silo sliding formwork construction according to claim 1, characterized in that: Both sides of the fixed shell (33) are fixedly connected to support legs (34). The bottom end of the support legs (34) is fixedly connected to a second mounting plate (35). The second mounting plate (35) is fixedly connected to the upper surface of the crossbeam (3) by bolts. The outer surface of the fixed shell (33) is fixedly connected to a motor (36). The output end of the motor (36) is fixedly connected to a rotating shaft (39). The outer surface of the rotating shaft (39) extends into the inner cavity of the fixed shell (33). The end of the rotating shaft (39) away from the motor (36) is fixedly connected to a first bevel gear (40).

7. A lifting frame for shallow circular silo sliding formwork construction according to claim 6, characterized in that: The lower surface of the fixed plate (41) is rotatably connected to a first rotating rod (42), the outer surface of the first rotating rod (42) is fixedly connected to a second bevel gear (43), the first bevel gear (40) meshes with the second bevel gear (43), the bottom end of the first rotating rod (42) is fixedly connected to an external gear (44), the internal gear (38) meshes with the external gear (44), the cleaning part of the annular cleaning brush (46) is in contact with the outer surface of the support rod (12), the outer surface of the rotating shaft (39) is fixedly connected to a first synchronous wheel (47), the inner wall of the fixed shell (33) is rotatably connected to a second rotating rod (48), the outer surface of the second rotating rod (48) is fixedly connected to a second synchronous wheel (49), and the outer surfaces of the first synchronous wheel (47) and the second synchronous wheel (49) are provided with a synchronous belt (50).

8. A lifting frame for shallow circular silo sliding formwork construction according to claim 7, characterized in that: The end of the second rotating rod (48) is fixedly connected to a cam (51), which is located below the annular plate (55). The top of the upright rod (54) is fixedly connected to a top plate (56). The lower surface of the annular plate (55) is fixedly connected to a spring (57), and the bottom end of the spring (57) is fixedly connected to the upper surface of the connecting sleeve (53). The annular guide plate (58) is located below the annular cleaning brush (46).

9. A lifting frame for shallow circular silo sliding formwork construction according to claim 7, characterized in that: The outer surface of the annular guide plate (58) is provided with a through groove (59), and the second rotating rod (48) and the fixing rod (52) both pass through the through groove (59). An annular rubber pad (60) is fixedly connected to the top of the annular guide plate (58). The inner surface of the annular rubber pad (60) is in contact with the outer surface of the support rod (12). An annular collecting groove (61) is threadedly connected to the outer surface of the connecting sleeve (53). The annular collecting groove (61) is located below the annular guide plate (58). A handle (62) is fixedly connected to the lower surface of the annular collecting groove (61).

10. A method of using a lifting frame for shallow circular silo sliding formwork construction according to claims 1-9, characterized in that, Includes the following steps: S1. Assemble the lifting frame system: Place the portal frame (1) on the shallow circular silo foundation, install the connecting rod (7), template support device (6), pole support device (13), jack (11) and pole cleaning device (14) on the portal frame (1), and fix the bottom end of the support rod (12) to the foundation; S2. Install the template system: Connect the outer template (8) and the inner template (9) to the connecting rod (7) through the ring (10), adjust the template taper to ensure that the upper opening is small and the lower opening is large, and the single-sided inclination is 0.1% to 0.3% of the template height. Rotate the handwheel (17) to make the support plate (19) support the template. S3. Concrete pouring and slipforming operation: After all the pre-construction preparations are completed, concrete is poured in layers between the outer formwork (8) and the inner formwork (9). When slipforming is possible, the jack (11) is started to drive the lifting frame to lift the formwork system along the support rod (12). During the slipforming process, the motor (36) of the rod cleaning device (14) drives the ring cleaning brush (46) through the gear set to clean the surface of the support rod (12). The rod support device (13) provides multi-point support to the support rod (12) through the main support rod (25) and the sub-support rod (26). At the same time, the ultrasonic flaw detector (32) monitors in real time whether cracks appear on the support rod (12).

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