A prefabricated fixed-foot on-site prefabrication method

Abstract

The present invention discloses a method for on-site prefabrication of precast fixed feet, which includes the following steps: site selection, setting up decentralized prefabrication points and centralized prefabrication points on-site to achieve in-situ prefabrication and hoisting; production of bottom forms, pouring concrete after cleaning and leveling the original ground surface, compacting and smoothing the surface; steel bar processing and installation, re-inspecting according to models and specifications, and after passing the inspection, classifying, labeling and stacking; classifying and stacking the semi-finished products of steel bars after cutting and bending. Pop the steel bar installation control lines on the bottom form, and ensure that the installation position and dimension deviations meet the requirements of the design and specifications. Check the steel bar connection or welding joints one by one to ensure the quality of steel bar connection; formwork installation, using standardized steel formwork for all formworks, and the strength and stiffness meet the specification requirements. After the acceptance of steel bars and embedded parts, apply release agent, install formwork, concrete pouring and curing. The concrete is commercial concrete, and the chute of the tanker can directly enter the bin, vibrate the concrete densely with a vibrator, roughen the surface layer after pouring, and start curing in time after final setting.

Description

Technical Field

[0001] The present invention relates to the technical field of bank construction, and specifically to a precast foundation foot on-site precast method. Background Technique

[0002] A river channel is a flood discharge channel, and a dike is a flood defense barrier. The river channel belongs to a natural slope. Under the influence of various factors such as water flow, sediment, geology, and human activities, the bank slope often becomes unstable and suffers erosion damage. In severe cases, the bank slope collapses to form dangerous works, endangering the river dike and flood control safety. According to the law of river sediment movement, taking effective bank protection engineering measures is an important guarantee for river dike and flood control safety.

[0003] However, for a river channel, there are high tide levels and low tide levels. Adding a membrane bag sand cofferdam or a water stop steel sheet pile cofferdam will greatly increase the construction cost. Therefore, the in-situ casting of the bank concrete structure cannot meet the actual needs of this section. For the above-mentioned river channel, the construction process of the bank concrete structure is "demolishing and reshaping the old dike at high tide, precast foundation foot segmented hoisting, and in-situ casting of the dike top reinforcement structure". After the old dike is demolished and the foundation is cleared, the stone pitching for foundation foot construction is carried out first, and then a 15 cm thick gravel layer and a 10 cm thick C20 plain concrete cushion are laid. The bottom of the dike concrete structure is a precast foundation foot.

[0004] Since the precast foundation foot is large in size and heavy in weight, it is inconvenient for long-distance transportation, and the foundation foot is easily damaged during the transportation process, wasting manpower and material resources. Therefore, there is an urgent need for a method for on-site casting of precast foundation feet. Summary of the Invention

[0005] The present invention provides a precast foundation foot on-site precast method to solve the problems raised in the background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] A precast foundation foot on-site precast method includes the following steps:

[0008] S1: Select a site, and after cleaning and leveling the site, pour concrete as the bottom formwork;

[0009] S2: Pop the steel bar installation control lines on the bottom formwork and install the steel bars;

[0010] S3: Fix the formwork outside the steel bars, pour concrete between the formworks, vibrate the concrete between the formworks, and roughen the surface after pouring is completed.

[0011] Preferably, in step S1, the selected site includes decentralized precast points and centralized precast points;

[0012] In step S2, the concrete surface of the bottom formwork is compacted and troweled smooth;

[0013] In step S3, a release agent is applied to the contact surface between the formwork and the concrete.

[0014] Preferably, in step S2, the steel bars are re-inspected according to their models and specifications. After passing the inspection, they are classified, labeled, and stacked. The semi-finished products of the steel bars after cutting and bending are stacked separately.

[0015] In step S2, the connection joints of the steel bars are checked one by one before pouring concrete between the formworks.

[0016] Preferably, in step S3, the formwork is composed of several plate members spliced together. Two side edges of the plate members are provided with positioning protrusions, and grooves adapted to the positioning protrusions are provided on the opposite sides of the plate members where the positioning protrusions are located. The plate members are connected by a connection component.

[0017] Preferably, the connection component includes a fixing plate and a connecting frame arranged on the plate member. The connecting frame is provided with several connecting mounting plates. A connecting ball is fixedly connected to the connecting mounting plate, and the connecting ball is clamped in a connecting seat. The connecting seat is fixedly connected to the fixing plate.

[0018] Several second connecting pieces are fixedly connected to the connecting seat, and the second connecting pieces are made of elastic material.

[0019] Several first connecting pieces are rotatably connected to the connecting seat. One end of the first connecting piece close to the fixing plate is fixedly connected with a spring piece. Clamps are arranged on the outer peripheries of the first connecting piece and the second connecting piece.

[0020] Preferably, in step S3, the concrete between the formworks is vibrated by a vibrator arranged on the outer side of the formwork, and the vibrator is connected to the formwork through a vibration safety component.

[0021] The vibration safety component includes a vibration safety connecting plate fixedly connected to the formwork and a vibration safety mounting plate connecting the vibrator. Several vibration diffusion springs are arranged between the vibration safety connecting plate and the vibration safety mounting plate.

[0022] A safety component and a follow-up connection component are arranged on the vibration safety mounting plate.

[0023] Preferably, an installation fixing strip is fixedly connected to the vibration safety mounting plate. Both ends of the installation fixing strip are fixedly connected with worm connecting sleeves. A worm is rotatably connected in the worm connecting sleeves. One end of the worm penetrates through one of the worm connecting sleeves, and a rotating head is fixedly connected to the worm located outside the worm connecting sleeve.

[0024] The worm is located on one side of the installation fixing strip.

[0025] Preferably, the safety component includes a worm gear mounting bracket fixedly connected to the vibrating safety mounting plate. A first worm gear is rotatably connected to the worm gear mounting bracket and meshes with a worm. An outer edge convex plate is fixedly connected to the first worm gear. The distal end of the outer edge convex plate abuts against a contact sliding piece fixedly connected to a safety slider. The safety slider is slidably connected to the vibrating safety mounting plate and penetrates through the vibrating safety mounting plate. One end of a limit telescopic rod is fixedly connected to the safety slider above the vibrating safety mounting plate, and the other end of the limit telescopic rod is fixedly connected to the vibrating safety mounting plate. A safety spring is sleeved outside the limit telescopic rod. One end of the safety spring is fixedly connected to the safety slider, and the other end of the safety spring is fixedly connected to the vibrating safety mounting plate;

[0026] An interface seat is fixedly connected to the safety slider. An interface is provided on the interface seat and communicated with a driving control line.

[0027] Preferably, the follow-up connection component includes a limit disc rotatably connected inside a mounting fixing strip. A rotating shaft is fixedly connected to the center of the limit disc. A second worm gear is fixedly connected to the rotating shaft and meshes with the worm. A driving roller is fixedly connected to the rotating shaft. Two groups of driving chutes are symmetrically arranged on the driving roller. The two ends of the two groups of driving chutes are communicated. A driving slider is slidably connected inside the driving chute and fixedly connected to a sleeve. The sleeve is sleeved outside the driving roller and slides axially along the connection hole inside the connection hole;

[0028] Two flexible connection heads are fixed to one end of the sleeve away from the limit disc. The end of the flexible connection head away from the sleeve is provided with an involute inclined surface;

[0029] Connection recovery frames are fixedly connected to the two flexible connection heads respectively. A connection recovery spring is arranged between the two connection recovery frames. The two ends of the connection recovery spring respectively abut against the two connection recovery frames. The connection recovery spring is sleeved on a limit sliding shaft, and the limit sliding shaft is inserted into the connection recovery frame.

[0030] Preferably, a separation positioning plate is fixedly connected inside the connection hole. A separation block is fixedly connected to the separation positioning plate. The separation block is wedge-shaped and adapted to the inclined surface of the flexible connection head;

[0031] A positioning head is slidably connected to the center of the separation positioning plate. One end of the positioning head is inserted into the separation block. The diameters of both ends of the positioning head are larger than the middle diameter. A positioning recovery spring is sleeved on the middle section of the positioning head. The two ends of the positioning recovery spring are respectively connected to the separation positioning plate and the positioning head.

[0032] Compared with the prior art, the present invention has at least the following beneficial effects:

[0033] Set up dispersed prefabrication points and centralized prefabrication points on site to maximize on-site prefabrication and hoisting, conduct re-inspections according to models and specifications, and classify and label and stack qualified products. Semi-finished products after cutting and bending are classified and stacked; pop up the steel bar installation control line on the bottom mold, and the installation position and dimensional deviation meet the design and specification requirements; check the steel bar connections or welded joints one by one to ensure the quality of the steel bar connections. The templates are all made of standardized steel molds, and the strength and rigidity meet the specification requirements. After the steel bars and embedded parts are accepted, apply the release agent and install the template. Commercial concrete is used for concrete, and the tank truck chute can be directly put into the warehouse. The vibrator is used to vibrate and compact it. The surface layer is roughened after pouring, and maintenance begins in time after final setting;

[0034] The present application provides a method for on-site casting of pre-placed fixed feet, which avoids the defects of remote casting and then transportation, and meets the needs of on-site casting of pre-placed fixed feet in the construction process of "dismantling and shaping the old embankment to catch the tide, segmented lifting of prefabricated fixed feet, and cast-in-place reinforcement structure of the embankment top". BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a flow chart of the steps of the present invention;

[0036] Figure 2 It is a schematic diagram of the plate connection structure of the present invention;

[0037] Figure 3 It is a schematic diagram of the position of the positioning protrusion of the present invention;

[0038] Figure 4 It is a schematic diagram of the structure of the connection assembly of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of the vibrating safety component of the present invention;

[0040] Figure 6 It is a schematic diagram of the local structure of the follow-up connecting assembly of the present invention;

[0041] Figure 7 This is a schematic diagram of the installation position structure of the safety component of the present invention;

[0042] Figure 8 It is a schematic diagram of the structure of the safety component of the present invention;

[0043] Figure 9 It is a schematic cross-sectional view of the follower connection assembly structure of the present invention;

[0044] Figure 10 It is a partial cross-sectional schematic diagram of the follower connection assembly structure of the present invention;

[0045] Figure 11 It is a schematic diagram of the local structure of the follow-up connecting component of the present invention.

[0046] In the figure: 1, plate member; 2, connection assembly; 3, connection frame; 4, positioning protrusion; 5, connection mounting plate; 6, first connection piece; 7, connection ball; 8, connection seat; 9, fixing plate; 10, elastic piece; 11, second connection piece; 12, vibrating safety connection plate; 13, vibrating safety mounting plate; 14, vibrating diffusion spring; 15, installation fixing strip; 16, installation positioning plate; 17, connection hole; 18, first worm gear; 19, outer edge convex plate; 20, worm gear mounting frame; 21, follower connection assembly; 22, drive control line; 23, abutting sliding piece; 24, safety slider; 25, safety spring; 26, limit telescopic rod; 27, interface; 28, interface seat; 29, separation positioning plate; 30, limit disc; 31, second worm gear; 32, rotating shaft; 33, drive roller; 34, sleeve; 35, drive slider; 36, drive chute; 37, connection recovery frame; 38, flexible connection head; 39, positioning head; 40, positioning recovery spring; 41, separation block; 42, connection recovery spring; 43, limit sliding shaft; 44, worm gear connection sleeve; 45, worm; 46, rotating head. Specific implementation mode

[0047] In the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are merely used to distinguish protection components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0048] Embodiment 1

[0049] Please refer to Figure 1 , an embodiment provided by the present invention: a prefabricated fixed-foot on-site prefabrication method, including the following steps:

[0050] S1: Select a site, and after cleaning and leveling the site, pour concrete as the bottom mold;

[0051] S2: Pop the steel bar installation control line on the bottom mold and install the steel bars;

[0052] S3: Fix the formwork outside the steel bars, pour concrete between the formworks, vibrate the concrete between the formworks, and roughen the surface layer after pouring.

[0053] Preferably, in step S1, the selected sites include dispersed prefabrication sites and centralized prefabrication sites;

[0054] In step S2, the concrete surface of the bottom mold is compacted and smoothed;

[0055] In step S3, a release agent is applied to the contact surface between the formwork and the concrete.

[0056] Preferably, in step S2, the steel bars are re-inspected according to the model and specification, and the qualified ones are classified, labeled and stacked, and the semi-finished products after the steel bars are cut and bent are classified and stacked;

[0057] In step S2, before pouring concrete between the formworks, the connection joints of the steel bars are checked one by one.

[0058] The working principle and beneficial effects of the above scheme:

[0059] For example, during the construction of the embankment on the north bank of Lingshan Island and the right bank of Jiaomen Waterway in the starting area of ​​Pearl Bay Area in Nansha New District, Guangzhou, four dispersed prefabrication sites were set up on site, each of which was about 100 square meters, and one centralized prefabrication site was about 1,500 square meters, to maximize the on-site prefabrication and hoisting. After the original ground was cleaned and leveled, 10 cm thick concrete was poured, and the surface was compacted and smoothed; then re-inspected according to model and specification, and classified and marked and stacked after passing the inspection. The semi-finished products after the steel bars were cut and bent were classified and stacked; the steel bar installation control line was popped up on the bottom mold, and the installation position and dimensional deviation met the design and specification requirements; the steel bar connections or welded joints were checked one by one to ensure the quality of the steel bar connections. The templates all use standardized steel molds, and the strength and rigidity meet the specification requirements. After the steel bars and embedded parts are accepted, the release agent is applied and the template is installed. The concrete uses commercial concrete, and the tank truck chute can be directly put into the warehouse. The vibrator is vibrated to make it dense, and the surface layer is roughened after pouring. After final setting, maintenance begins in time;

[0060] The present application provides a method for on-site casting of pre-placed fixed feet, which avoids the defects of remote casting and then transportation, and meets the needs of on-site casting of pre-placed fixed feet in the construction process of "dismantling and shaping the old embankment to catch the tide, segmented lifting of prefabricated fixed feet, and cast-in-place reinforcement structure of the embankment top".

[0061] Example 2

[0062] See also Figures 2 - 4 On the basis of Example 1, in step S3, the template is formed by splicing a plurality of panels 1 together, two sides of the panels 1 are provided with positioning protrusions 4, and the opposite side of the panel 1 provided with the positioning protrusions 4 is provided with a groove adapted to the positioning protrusions 4, and the panels 1 are connected by a connecting component 2.

[0063] Preferably, the connecting component 2 includes a fixing plate 9 provided on the plate member 1 and a connecting frame 3. A number of connecting mounting plates 5 are provided on the connecting frame 3. A connecting ball 7 is fixedly connected to the connecting mounting plate 5. The connecting ball 7 is clamped in a connecting seat 8, and the connecting seat 8 is fixedly connected to the fixing plate 9;

[0064] A number of second connecting pieces 11 are fixedly connected to the connecting seat 8, and the second connecting pieces 11 are made of an elastic material;

[0065] A number of first connecting pieces 6 are rotatably connected to the connecting seat 8. A spring piece 10 is fixedly connected to one end of the first connecting piece 6 close to the fixing plate 9;

[0066] A clamp is provided on the outer periphery of the first connecting piece 6 and the second connecting piece 11.

[0067] The working principle and beneficial effects of the above solution:

[0068] In this application, a number of plate members 1 are spliced and combined to form a template to meet the requirements of on-site casting of precast fixed feet. After the casting is completed, the template can be disassembled into smaller plate members 1, which is convenient for transportation. Moreover, the template is modularly designed. When a certain plate member 1 is deformed and cannot be used, only one plate member 1 needs to be replaced, rather than replacing the entire template, which saves the maintenance cost;

[0069] When connecting the plate members 1, only need to insert the connecting ball 7 on the connecting frame 3 into the connecting seat 8 on the plate member 1, and initially fix the connecting ball 7 through the elastic first connecting piece 6 and second connecting piece 11. Then lock the clamp on the outer periphery of the first connecting piece 6 and the second connecting piece 11 to complete the fixation of the plate member 1, and assemble the plate members 1 into a template for casting operations.

[0070] Embodiment 3

[0071] Please refer to Figure 5 、 7 , on the basis of Embodiments 1-2, in step S3, the concrete between the templates is vibrated by a vibrator provided on the outer side of the template, and the vibrator is connected to the template through a vibration safety component;

[0072] The vibration safety component includes a vibration safety connecting plate 12 fixedly connected to the template and a vibration safety mounting plate 13 connecting the vibrator. A number of vibration diffusion springs 14 are provided between the vibration safety connecting plate 12 and the vibration safety mounting plate 13;

[0073] A safety component and a follow-up connection component 21 are provided on the vibration safety mounting plate 13.

[0074] Preferably, an installation fixing strip 15 is fixedly connected to the vibration safety installation plate 13. Both ends of the installation fixing strip 15 are fixedly connected with worm gear connecting sleeves 44. A worm gear 45 is rotatably connected inside the worm gear connecting sleeves 44. One end of the worm gear 45 penetrates through one of the worm gear connecting sleeves 44, and the worm gear 45 located outside the worm gear connecting sleeve 44 is fixedly connected with a rotating head 46;

[0075] The worm gear 45 is located on one side of the installation fixing strip 15.

[0076] The working principle and beneficial effects of the above solution:

[0077] In this application, the vibration diffusion spring 14 of the vibration safety component diffuses the oscillation of the vibrator, increasing the action range of the vibrator, which is beneficial to removing the air bubbles in the concrete in the formwork, making the concrete densely combined, eliminating the honeycombing and pockmarks of the concrete, improving the fixing strength, and ensuring the quality of the fixing;

[0078] The safety component of the vibration safety component is connected to the follower connection component 21 through the worm gear 45, making the safety component and the follower connection component 21 related. When the follower connection component 21 does not firmly fix the vibrator, the safety component makes the vibrator unable to work, effectively extending the service life of the vibrator.

[0079] Embodiment 4

[0080] Please refer to Figure 7 、 8 On the basis of Embodiments 1-3, the safety component includes a worm gear installation frame 20. The worm gear installation frame 20 is fixedly connected to the vibration safety installation plate 13. A first worm gear 18 is rotatably connected to the worm gear installation frame 20. The first worm gear 18 meshes with the worm gear 45. The first worm gear 18 is fixedly connected with an outer edge convex plate 19. The distal end of the outer edge convex plate 19 abuts against a contact sliding piece 23. The contact sliding piece 23 is fixedly connected to a safety slider 24. The safety slider 24 is slidably connected to the vibration safety installation plate 13, and the safety slider 24 penetrates through the vibration safety installation plate 13. One end of a limit expansion rod 26 is fixedly connected to the safety slider 24 located above the vibration safety installation plate 13. The other end of the limit expansion rod 26 is fixedly connected to the vibration safety installation plate 13. A safety spring 25 is sleeved outside the limit expansion rod 26. One end of the safety spring 25 is fixedly connected to the safety slider 24, and the other end of the safety spring 25 is fixedly connected to the vibration safety installation plate 13;

[0081] An interface seat 28 is fixedly connected to the safety slider 24. An interface 27 is arranged on the interface seat 28. The interface 27 is communicated with the drive control line 22.

[0082] The working principle and beneficial effects of the above solution:

[0083] In this application, by setting up a safety component, it is ensured that the vibrator cannot work when the follower connection component 21 fails to firmly fix the vibrator, effectively avoiding damage caused by the fall of the vibrator.

[0084] Rotate the rotating head 46. While fixing the vibrator, it drives the worm 45 to rotate. The first worm wheel 18 meshing with the worm 45 drives the outer edge convex plate 19 to rotate. The outermost end of the outer edge convex plate 19 rotates to abut against the side of the abutting slide piece 23, canceling the extrusion of the abutting slide piece 23. The safety slider 24 connected to the abutting slide piece 23 approaches the vibrator under the action of the safety spring 25, and the interface 27 is inserted into the electrical signal port of the vibrator, completing the communication between the drive control line 22 and the vibrator, that is, fixing the vibrator and also completing the connection between the vibrator and the drive control line 22.

[0085] Among them, the transmission between the worm 45 and the first worm wheel 18 ensures the one-way transmission of power. It can only be locked and unlocked by rotating the rotating head 46, and the rotation of the worm 45 cannot be controlled by the first worm wheel 18.

[0086] Embodiment 5

[0087] Please refer to Figure 6 、 7 Figures 9 - 11. On the basis of Embodiments 1 - 4, the follower connection component 21 includes a limit disk 30. The limit disk 30 is rotatably connected within the installation and fixing strip 15. A rotating shaft 32 is fixedly connected to the center of the limit disk 30. A second worm wheel 31 is fixedly connected to the rotating shaft 32. The second worm wheel 31 meshes with the worm 45. A driving roller 33 is fixedly connected to the rotating shaft 32. Two groups of driving chutes 36 are symmetrically arranged on the driving roller 33. The two ends of the two groups of driving chutes 36 are communicated. A driving slider 35 is slidably connected within the driving chute 36. The driving slider 35 is fixedly connected to a sleeve 34. The sleeve 34 is sleeved outside the driving roller 33, and the sleeve 34 slides within the connection hole 17 along the axial direction of the connection hole 17.

[0088] Two flexible connection heads 38 are fixed to one end of the sleeve 34 away from the limit disk 30. The end of the flexible connection head 38 away from the sleeve 34 is provided with an involute inclined surface.

[0089] Two connection restoration frames 37 are fixedly connected to the two flexible connection heads 38. A connection restoration spring 42 is arranged between the two connection restoration frames 37. The two ends of the connection restoration spring 42 respectively abut against the two connection restoration frames 37. The connection restoration spring 42 is sleeved on the limit sliding shaft 43, and the limit sliding shaft 43 is inserted into the connection restoration frame 37.

[0090] Preferably, a separation positioning plate 29 is fixedly connected inside the connection hole 17. A separation block 41 is fixedly connected to the separation positioning plate 29. The separation block 41 is wedge-shaped and adapted to the inclined surface of the flexible connection head 38.

[0091] A positioning head 39 is slidably connected to the center of the separation positioning plate 29. One end of the positioning head 39 is inserted into the separation block 41. The diameters of both ends of the positioning head 39 are larger than the diameter of the middle section. A positioning recovery spring 40 is sleeved on the middle section of the positioning head 39. Both ends of the positioning recovery spring 40 are respectively connected to the separation positioning plate 29 and the positioning head 39.

[0092] The working principle and beneficial effects of the above solution:

[0093] In this application, by setting the follow-up connection assembly 21, when the follow-up connection assembly 21 fails to firmly fix the vibrator, the control line 22 cannot be connected to the vibrator either, so that the vibrator cannot work, effectively avoiding damage caused by the fall of the vibrator.

[0094] Rotate the rotating head 46, the worm 45 drives the second worm gear 31 to rotate, so that the driving roller 33 fixed to the second worm gear 31 rotates. Since the sleeve 34 sleeved outside the driving roller 33 slides along the axial direction of the connection hole 17, and the driving slider 35 on the sleeve 34 is slidably connected to the driving chute 36 on the driving roller 33, when the driving roller 33 rotates, it drives the sleeve 34 to slide in the axial direction of the connection hole 17, and drives the flexible connection head 38 to separate from both sides of the separation positioning plate 29 and enter the fixing hole of the vibrator. Under the action of the separation block 41 and the inclined surface of the flexible connection head 38, the fixing hole of the vibrator is squeezed to fix the vibrator.

[0095] While fixedly connecting the vibrator, the connection between the vibrator and the drive control line 22 is also completed by driving the worm 45 and the first worm gear 18.

[0096] Among them, the transmission between the worm 45 and the second worm gear 31 ensures the one-way transmission of power. It can only be locked and unlocked by rotating the rotating head 46, and the rotation of the worm 45 cannot be controlled by the second worm gear 31.

[0097] Among them, the slidably connected positioning head 39 is beneficial to better match the follow-up connection assembly 21 with the fixing hole of the vibrator.

[0098] Among them, the setting of the connection recovery spring 42 is beneficial to the retraction of the flexible connection head 38 after the vibrator is disassembled.

[0099] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A method for on-site prefabrication of precast fixed feet, characterized in that: It includes the following steps: S1: Select a site, clean and level the site, and then pour concrete as the bottom formwork; S2: Pop the steel bar installation control line on the bottom formwork and install the steel bars; S3: Fix the formwork outside the steel bars, pour concrete between the formworks, vibrate the concrete between the formworks, and roughen the surface after pouring; In step S3, the concrete between the formworks is vibrated by a vibrator arranged outside the formwork, and the vibrator is connected to the formwork through a vibration safety component; The vibration safety component includes a vibration safety connecting plate fixedly connected to the formwork and a vibration safety mounting plate connecting the vibrator. There are several vibration diffusion springs arranged between the vibration safety connecting plate and the vibration safety mounting plate; A safety component and a follow-up connection component are arranged on the vibration safety mounting plate; An installation fixing strip is fixedly connected to the vibration safety mounting plate. Both ends of the installation fixing strip are fixedly connected with worm connecting sleeves. A worm is rotatably connected inside the worm connecting sleeves. One end of the worm penetrates through one of the worm connecting sleeves, and a rotating head is fixedly connected to the worm located outside the worm connecting sleeve; The worm is located on one side of the installation fixing strip; The safety component and the follow-up connection component of the vibration safety component are connected through the worm. In the case where the follow-up connection component does not firmly fix the vibrator, the safety component makes the vibrator unable to work; The follow-up connection component includes a limit disk rotatably connected inside the installation fixing strip. A rotating shaft is fixedly connected to the center of the limit disk. A second worm gear is fixedly connected to the rotating shaft. The second worm gear meshes with the worm. A driving roller is fixedly connected to the rotating shaft. Two groups of driving chutes are symmetrically arranged on the driving roller. Both ends of the two groups of driving chutes are connected. A driving slider is slidably connected inside the driving chute. The driving slider is fixedly connected to a sleeve. The sleeve is sleeved outside the driving roller, and the sleeve slides axially along the connection hole inside the connection hole; Two flexible connection heads are fixed to one end of the sleeve away from the limit disk. The end of the flexible connection head away from the sleeve is provided with an involute inclined surface; Two connection recovery frames are fixedly connected to both flexible connection heads. A connection recovery spring is arranged between the two connection recovery frames. Both ends of the connection recovery spring respectively abut against the two connection recovery frames. The connection recovery spring is sleeved on a limit sliding shaft, and the limit sliding shaft is inserted into the connection recovery frame; A separation positioning plate is fixedly connected inside the connection hole. A separation block is fixedly connected to the separation positioning plate. The separation block is wedge-shaped and adapted to the inclined surface of the flexible connection head; A positioning head is slidably connected to the center of the separation positioning plate. One end of the positioning head is inserted into the separation block. The diameters of both ends of the positioning head are larger than the middle diameter. A positioning recovery spring is sleeved on the middle section of the positioning head. Both ends of the positioning recovery spring are respectively connected to the separation positioning plate and the positioning head.

2. The method for on-site prefabrication of precast fixed feet according to claim 1, characterized in that: In step S1, the selected site includes decentralized prefabrication points and centralized prefabrication points; In step S2, the concrete surface of the bottom formwork is compacted and polished; In step S3, a release agent is applied to the contact surface between the formwork and the concrete.

3. The method for on-site prefabrication of precast fixed feet according to claim 1, characterized in that: In step S2, the steel bars are re-inspected according to their models and specifications. After passing the inspection, they are classified, labeled, and stacked. The semi-finished products after cutting and bending of the steel bars are stacked separately. In step S2, the connection joints of the steel bars are inspected one by one before pouring concrete between the formworks.

4. A method for on-site prefabrication of a precast fixed foot according to claim 1, characterized in that In step S3, the formwork is composed of several plate members spliced together. Two side edges of the plate members are provided with positioning protrusions, and grooves adapted to the positioning protrusions are provided on the opposite sides of the plate members where the positioning protrusions are provided. The plate members are connected by a connection component.

5. A method for on-site prefabrication of a precast fixed foot according to claim 4, characterized in that The connection component includes a fixing plate provided on the plate member and a connecting frame. The connecting frame is provided with several connecting mounting plates. A connecting ball is fixedly connected to the connecting mounting plate. The connecting ball is clamped in a connecting seat, and the connecting seat is fixedly connected to the fixing plate. Several second connecting pieces are fixedly connected to the connecting seat. The second connecting pieces are made of elastic material. Several first connecting pieces are rotatably connected to the connecting seat. One end of the first connecting piece close to the fixing plate is fixedly connected with a spring plate. Clamps are provided on the outer peripheries of the first connecting piece and the second connecting piece.

6. A method for on-site prefabrication of a precast fixed foot according to claim 1, characterized in that The safety component includes a worm gear mounting frame fixedly connected to the vibrating safety mounting plate. A first worm gear is rotatably connected to the worm gear mounting frame. The first worm gear meshes with a worm. The first worm gear is fixedly connected with an outer edge convex plate. The distal end of the outer edge convex plate abuts against an abutting sliding piece. The abutting sliding piece is fixedly connected to a safety slider. The safety slider is slidably connected to the vibrating safety mounting plate, and the safety slider penetrates through the vibrating safety mounting plate. One end of a limit expansion rod is fixedly connected to the safety slider located above the vibrating safety mounting plate. The other end of the limit expansion rod is fixedly connected to the vibrating safety mounting plate. A safety spring is sleeved outside the limit expansion rod. One end of the safety spring is fixedly connected to the safety slider, and the other end of the safety spring is fixedly connected to the vibrating safety mounting plate. An interface seat is fixedly connected to the safety slider. An interface is provided on the interface seat. The interface is communicated with a driving control line.

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