Large-diameter cast-in-place pile construction platform device

Abstract

The utility model discloses a large-diameter cast-in-place pile construction platform device in the technical field of bridge pile foundation construction. The large-diameter cast-in-place pile construction platform device comprises a platform device body and a reinforcement cage fixing device. The platform device comprises a supporting frame body and a base plate arranged on the supporting frame body, a round hole allowing a reinforcement cage to penetrate through is formed in the center area of the base plate, the reinforcement cage fixing device comprises a movable plate and a fixing frame, the movable plate is arranged on the platform device in a sliding mode, and a check block is arranged at the end, close to a hole opening, of the movable plate. A positioning rod is arranged at the end, away from the hole opening, of the movable plate, and the fixing frame is arranged on the platform device and used for limiting the movable plate so that the movable plate can only move in the length direction. According to the construction method, rapid and accurate connection of the cast-in-place pile reinforcement cage lengthening sleeve can be achieved, and the safety guarantee coefficient of reinforcement cage lengthening connection and concrete guide pipe mounting and dismounting construction is low.

Description

Technical Field

[0001] The present application relates to the technical field of bridge pile foundation construction, and belongs to a large-diameter bored pile construction platform device, and specifically to a large-diameter bored pile construction platform device. Background Art

[0002] In bridge engineering, bored piles are a common type of pile foundation. The pile body is formed by drilling holes in the ground, installing steel cages and pouring concrete. It has a high bearing capacity and good bending resistance. The fixing and vertical suspension of the steel cage are the key to ensuring the fast and accurate connection of the steel cage extension sleeve.

[0003] The existing temporary construction platform for fixing the steel cage usually uses two I-beams to insert in the gap between the main bars of the steel cage, so that the steel cage is suspended in the bored pile hole. The I-beams are not inserted smoothly between the main bars of the steel cage, which is time-consuming and labor-intensive. It is also difficult to ensure that the I-beams are placed in a horizontal state, which seriously affects the rapid and accurate connection of the steel cage extension sleeve. The existing temporary construction platform for installing and removing concrete conduits usually uses I-beams and steel to build a simple trestle construction platform to support the concrete conduit and concrete hopper. The above-mentioned existing temporary construction platforms for fixing steel cages and installing and removing concrete conduits lack protective devices for the bored pile holes, and have a low construction safety factor. There is a safety risk that construction operators may accidentally fall into the bored pile holes during construction. They can no longer meet the requirements for the extension connection of steel cages and the installation and removal of concrete conduits for bored piles with a pile diameter greater than or equal to 2.2m. Utility Model Content

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a large-diameter bored pile construction platform device, including a platform device and a steel cage fixing device; the platform device includes a support frame and a base plate arranged on the support frame, a circular hole for the steel cage to pass through is opened in the central area of ​​the base plate, the steel cage fixing device includes a movable plate and a fixed frame, the movable plate is slidably arranged on the platform device, a stop block is arranged at one end of the movable plate close to the hole, and a positioning rod is arranged at one end of the movable plate away from the hole, and the fixed frame is arranged on the platform device, which is used to limit the movable plate so that the movable plate can only move along the length direction.

[0005] As a further solution of the present application, the support frame is designed as a "mouth" shaped structure, and oblique supports are arranged on adjacent sides of the inner side of the support frame.

[0006] As a further solution of the present application, the fixing frame includes a transverse plate and two bolts. The two bolts pass through the base plate and are connected to the transverse plate. A hole for the movable plate to pass through is formed between the two bolts and the transverse plate.

[0007] As a further solution of the present application, a plurality of the fixing frames are arranged at intervals along the length direction of the movable plate.

[0008] As a further solution of the present application, a roller bracket is provided on the platform device corresponding to the bottom of the movable plate, and a roller for supporting the movable plate is rotatably connected to the roller bracket. A pad is detachably provided on the platform device corresponding to the bottom of the movable plate, and the height of the pad is not less than the height of the roller.

[0009] As a further solution of the present application, positioning holes are provided at intervals along the length direction of the movable plate, and the movement of the movable plate along the length direction is limited by inserting limit rods into the positioning holes on both sides of the fixing frame.

[0010] As a further solution of the present application, the large-diameter bored pile construction platform device also includes a hole mouth protection device arranged at the circular hole position in the central area of ​​the base plate, and the hole mouth protection device includes two foot pedals, and the foot pedals are connected to hinge plates by hinges, and a semicircular hole is provided on the side of the hinge plate away from the foot pedals, and the semicircular holes of the two hinge plates are combined to form a catheter opening for passing a catheter.

[0011] As a further solution of the present application, a stepped notch is arranged around the circular hole in the central area of ​​the substrate, and the hole protection device is arranged in the notch.

[0012] As a further solution of the present application, an anti-skid patterned steel plate is arranged on the top surface of the substrate, and a circular hole with the same size as the circular hole in the central area of ​​the substrate is arranged in the central area of ​​the anti-skid patterned steel plate.

[0013] As a further solution of the present application, a circular hanging ring 14 is arranged in the middle of each side of the outer side of the support frame.

[0014] This application has the following beneficial effects:

[0015] By using a platform device to support and transfer the weight of the steel cage suspension and concrete pouring, the platform device is prevented from sagging on the center side and warping on the outside after being subjected to gravity; the concrete conduit is fixed by an orifice protection device; an anti-skid device is used to prevent construction operators from slipping and falling, thereby improving the safety of the cast-in-place pile steel cage extension connection and concrete conduit installation and removal construction; a steel cage fixing device is used to hook, cantilever and support the steel cage, so as to achieve the fixation of the cast-in-place pile steel cage, vertical suspension and fast and accurate connection of the steel cage extension sleeve. The technical solution of this application effectively solves the technical problem of fast and accurate connection of the cast-in-place pile steel cage extension sleeve, and improves the low safety factor of the steel cage extension connection and concrete conduit installation and removal construction.

[0016] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 Construction platform device structure diagram;

[0019] Figure 2 yes Figure 1 Middle Ⅰ-Ⅰ section;

[0020] Figure 3 It is the longitudinal section of the roller support structure;

[0021] Figure 4 It is a cross-sectional view of the roller support structure;

[0022] Figure 5 This is a structural diagram of the fixed frame.

[0023] Legend:

[0024] 1. Platform device; 11. Support frame; 111. Double I-beam; 112. Oblique support; 12. Base plate; 13. Notch; 14. Lifting ring; 2. Steel cage fixing device; 21. Moving plate; 22. Fixing frame; 221. Bolt; 222. Horizontal plate; 223. Nut; 23. Stopper; 24. Positioning hole; 25. Positioning rod; 26. Roller bracket; 261. Base plate; 262. Mounting frame; 263. Mounting area; 264, rolling drum; 2641, rolling shaft; 2642, cylindrical roller; 2643, rolling bearing; 27, pad; 3, hole protection device; 31, foot pedal; 32, hinge plate; 33, hinge; 34, concrete conduit port; 35, steel cage lifting port; 36, lifting ring; 37, operating handle; 4, anti-slip device; 41, patterned steel plate; 6, ground; 7, steel casing; 8, conduit; 9, concrete hopper. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-5 This application is described in further detail.

[0026] Reference Figure 1 The present application provides a large-diameter bored pile construction platform device to solve the technical problems of fast and accurate connection of bored pile reinforcement cage extension sleeves and low safety factor in the installation and removal of reinforcement cage extensions and concrete conduit 8.

[0027] Large-diameter cast-in-place pile construction platform device, including platform device 1 and steel cage fixing device 2; Platform device 1 includes a support frame 11 and a base plate 12 arranged on the support frame 11. A round hole for the steel cage to pass through is opened in the central area of the base plate 12. The steel cage fixing device 2 includes a moving plate 21 and a fixing frame 22. The moving plate 21 is slidably arranged on the platform device 1. A stop block 23 is arranged at one end of the moving plate 21 close to the hole opening, and a positioning rod 25 is arranged at the other end of the moving plate 21 away from the hole opening. The fixing frame 22 is arranged on the platform device to limit the moving plate 21 so that the moving plate 21 can only move along the length direction.

[0028] Adopt a movable steel cage fixing device and a platform device 1 with a central round hole. This structure enables the steel cage to stably pass through the platform and be accurately positioned, thereby reducing the displacement and adjustment time during construction. The design of the stop block 23 and the positioning rod 25 on the moving plate 21 ensures that the moving plate 21 can accurately move to the required position in the length direction and is limited by the fixing frame 22 to prevent the moving plate 21 from exceeding the predetermined range, thereby improving the construction efficiency and safety.

[0029] Refer to Figure 1 and Figure 2 Refer to

[0030] The fixing frame 22 includes a transverse plate 222 and two bolts 221. The two bolts 221 pass through the base plate 12 and are connected to the transverse plate 222. A hole for the moving plate 21 to pass through is formed between the two bolts 221 and the transverse plate 222. The fixing frame 22 designed in this way has a simple and effective structure. Through the connection method of the transverse plate 222 and the two bolts 221, the stability and reliability of the fixing frame 22 are ensured. The two bolts 221 pass through the base plate 12 and are connected to the transverse plate 222, forming a hole for the moving plate 21 to pass through. This design enables the moving plate 21 to be easily connected to the fixing frame 22, thereby realizing the fixation of the steel cage and the limitation of the moving plate 21. At the same time, such a design also facilitates the installation and adjustment of the moving plate 21, improves the operability and use convenience of the construction platform device, and further improves the construction efficiency and safety.

[0031] A plurality of fixing frames 22 are arranged at intervals along the length direction of the movable plate 21. The design of arranging a plurality of fixing frames 22 at intervals along the length direction of the movable plate 21 is mainly for enhancing the connection stability and bearing capacity between the fixing frames 22 and the movable plate 21. By arranging a plurality of fixing frames 22, the force applied to the movable plate 21 can be dispersed, making the entire structure more balanced and stable, thereby effectively preventing the movable plate 21 from becoming unstable or deforming during the construction process.

[0032] A roller bracket 26 is provided on the platform device 1 corresponding to the bottom of the moving plate 21, and a roller for supporting the moving plate 21 is rotatably connected to the roller bracket 26. Through the arrangement of the roller bracket 26 and the roller, the moving plate 21 can slide easily on the platform device 1, reducing the power consumption of the operator and reducing the friction between the moving plate 21 and the platform device 1, thereby improving the operation efficiency during the construction process.

[0033] A pad 27 is detachably provided on the platform device 1 corresponding to the bottom of the moving plate 21, and the height of the pad 27 is not less than the height of the roller. The pad 27 is provided to raise the height of the moving plate 21 so that it contacts the bottom surface of the top transverse plate 222 in the fixing frame 22, forming an integral force-bearing structure of the steel cage fixing device 2 and the platform device 1. This can effectively disperse the suspension gravity of the steel cage to the ground 6 through the integral force-bearing structure, and prevent the roller bracket 26 from being damaged by the weight of the moving plate 21 during the dispersion and transmission of the suspension gravity of the steel cage.

[0034] Positioning holes 24 are provided at intervals along the length direction on the movable plate 21 , and the movement of the movable plate 21 along the length direction is limited by inserting limiting rods into the positioning holes 24 on both sides of the fixing frame 22 .

[0035] A stepped notch 13 is arranged around the circular hole in the central area of ​​the base plate 12, and the hole protection device 3 is arranged in the notch 13. An anti-skid patterned steel plate 41 is arranged on the top surface of the base plate 12, and a circular hole with the same size as the circular hole in the central area of ​​the base plate 12 is arranged in the central area of ​​the anti-skid patterned steel plate 41. A circular hanging ring 14 is arranged in the middle of each side of the outer side of the support frame 11.

[0036] Reference Figure 1 and Figure 2, the platform device 1 is composed of a support frame 11, a base plate 12, a checkered steel plate 41, a notch 13, and a lifting ring 14. The support frame 11 is designed in the shape of a "square", mainly supporting and transmitting the gravity generated by the suspension of the steel reinforcement cage and the pouring of concrete, to prevent the overall instability of the platform device 1, such as the central side sagging and the outer side翘曲 upward after being subjected to gravity; circular lifting rings 14 are arranged in the middle of each side of the outer side of the support frame 11 to facilitate the hoisting of the platform device 1; diagonal braces 112 are respectively arranged at the adjacent sides of the four right angles inside the support frame 11, which helps to improve the stiffness of the support frame 11 and bear the base plate 12, and prevent the base plate 12 from being concave and uneven after installation.

[0037] The base plate 12 is installed on the top surface of the support frame 11, and a non-slip checkered steel plate 41 is arranged on the top surface of the base plate 12 to prevent construction workers from slipping on the top surface of the base plate 12. A round hole is opened in the central area of the base plate 12 and processed into a notch 13 in the shape of a "stepped step", which is beneficial to the installation of the orifice protection device 3. This can prevent construction workers from falling into the cast-in-place pile hole when installing and disassembling the conduit on the top surface of the orifice protection device 3 due to the instability of the orifice protection device 3. At the same time, a round hole with the same size as the round hole in the central area of the base plate 12 is arranged in the central area of the non-slip checkered steel plate 41.

[0038] The platform device 1 is composed of a support frame 11, a base plate 12, a checkered steel plate 41, a notch 13, and a lifting ring 14. The support frame 11 is welded by double splicing of I-beams made of Q235 material, and four double-spliced I-beams are welded into a "square" support frame 11. At the four right angles inside the support frame 11, two diagonal braces 112 are respectively welded to the adjacent sides. The height of the support frame 11 needs to be greater than the exposed ground height of the embedded steel casing by 200 mm. A round hole with a diameter greater than the outer diameter of the steel casing by 200 mm is cut in the central area of the base plate 12 and processed into a notch 13 in the shape of a "stepped step". The base plate 12 is arranged on the top surface of the support frame 11, the non-slip checkered steel plate 41 is arranged on the top surface of the base plate 12, and a round hole with the same size as the round hole in the central area of the base plate 12 is arranged in the central area of the non-slip checkered steel plate 41.

[0039] In a specific implementation manner, the manufacturing method of the support frame 11 is as follows:

[0040] The support frame 11 is welded by double splicing of 50 I-beams with a length of 4000 mm and a height of 500 mm, forming a double-spliced I-beam 111 in the shape of "Ⅱ". Four double-spliced I-beams 111 are welded into a "square" support frame 11, and its height is greater than the exposed ground height of the embedded steel casing 7 by 200 mm. A circular lifting ring 14 with a diameter of 100 mm is welded to the web of each double-spliced I-beam 111 in the middle of each side of the outer side of the support frame 11. Two diagonal braces 112 are respectively welded to the adjacent sides at the four right angles inside the support frame 11.

[0041] The oblique support 112 is made of 50 I-beam of Q235 material. A short oblique support 112 with a length of 700 mm and a height of 320 mm is arranged at four right angles close to the inner side of the support frame 11; a long oblique support 112 with a length of 1200 mm and a height of 320 mm is arranged at four right angles away from the inner side of the support frame 11. The distance between the long oblique support 112 and the short oblique support 112 is 500 mm.

[0042] In a specific embodiment, the method for manufacturing the substrate 12 is as follows:

[0043] The substrate 12 is made of Q345C, a stainless steel square plate with a thickness of 40 mm. Its length and width are both 10 mm less than the outer length and width of the support frame 11, so as to realize the welding connection between the substrate 12 and the support frame 11. In the central area of ​​the substrate 12, a circular hole with a diameter greater than the outer diameter of the steel casing 7 of 200 mm is cut, and a "stair step"-shaped notch 13 with a height of 20 mm and a width of 60 mm is processed. Among them, the upper notch diameter of the "stair step"-shaped notch 13 is greater than the outer diameter of the steel casing 7 of 320 mm, and the lower notch diameter is greater than the outer diameter of the steel casing 7 of 200 mm.

[0044] Reference Figure 1-4 The steel cage fixing device 2 is composed of a moving plate 21, a fixing frame 22, a stopper 23, a positioning hole 24, a positioning rod 25, a roller bracket 26, and a cushion block 27. The moving plate 21 is slidably arranged on the platform device 1. Two moving plates 21 are symmetrically arranged on both sides of the orifice of the platform device 1. A stopper 23 is arranged at one end of the moving plate 21 close to the orifice, and a positioning rod 25 is arranged at one end of the moving plate 21 away from the orifice; the fixing frame 22 is arranged on the platform device 1 to limit the moving plate 21 so that the moving plate 21 can only move along the length direction. Positioning holes 24 are arranged at intervals along the length direction on the moving plate 21, and the movement of the moving plate 21 along the length direction is limited by inserting limiting rods into the positioning holes 24 on both sides of the fixing frame 22. A roller bracket 26 is arranged on the platform device, and a roller for supporting the moving plate 21 is rotatably connected in the roller bracket 26.

[0045] Reference Figure 5The fixing frame 22 is formed into a "well" shape by high-strength bolts 221, transverse plates 222, and nuts 223. Positioning rods 25 are arranged on both sides of the rear end of the moving plate 21, which helps the construction operator to quickly push the moving plate 21 to move to the center side of the platform device 1, prevent the rear end of the moving plate 21 from exceeding the fixing frame 22, and play a role of pushing and limiting. A raised stopper 23 is arranged on the top surface of the front end of the moving plate 21 to prevent the front end of the moving plate 21 from moving outward beyond the fixing frame 22, which plays a role of limiting, and is conducive to the front end of the moving plate 21 extending into the cast-in-place pile steel cage, hooking, cantilevering and supporting the steel cage, preventing the steel cage from sliding into the cast-in-place pile hole, and playing a fixing role. Positioning holes 24 are arranged on the side of the moving plate 21, and steel bars are inserted to connect with the fixing frame 22 to fix the moving plate 21 together to prevent it from moving to the center side or outside of the platform device 1, thereby preventing the steel cage from horizontal displacement in the cast-in-place pile hole, and ensuring the fast and accurate connection of the steel cage extension sleeve. The roller bracket 26 is arranged on the top surface of the anti-skid patterned steel plate 41 corresponding to the bottom end of the moving plate 21, and the free movement is achieved through the rolling cylinder 264 in the roller bracket 26. The cushion block 27 is arranged on the top surface of the anti-skid patterned steel plate 41 corresponding to the bottom end of the moving plate 21 to raise the height of the moving plate 21 so that it contacts the bottom surface of the top transverse plate 222 in the fixing frame 22, forming an integral force-bearing structure of the steel cage fixing device 2 and the platform device 1. This can effectively disperse the suspension gravity of the steel cage to the ground 6 through the integral force-bearing structure, and prevent the roller bracket 26 from being damaged by the heavy pressure of the moving plate 21 during the dispersion and transmission of the suspension gravity of the steel cage.

[0046] In a specific embodiment, the manufacturing method of the steel cage fixing device 2 is as follows:

[0047] On the top surface of the patterned steel plate 41 at four right angles of the platform device 1, two sets of steel cage fixing devices 2 are arranged facing each other, so that the ends of the raised stoppers 23 of the steel cage fixing devices 2 are all facing the center side of the platform device 1. Two fixing frames 22 are arranged for each set of steel cage fixing devices 2.

[0048] The movable plate 21 is made of Q345C stainless steel plate with a thickness of 60mm and is processed into a rectangular steel plate with a length of 1300mm, a width of 60mm and a height of 300mm. In the middle of the height side of the movable plate 21, 250mm away from the front end surface, 10 positioning holes 24 with a spacing of 100mm and a diameter of 20mm are drilled horizontally. A 360mm long, HPB300φ20mm hot-rolled round steel bar is passed through the rear end positioning hole 24 of the movable plate 21 to form a positioning rod 25.

[0049] Reference Figure 1 , Figure 2 and Figure 5The fixing frame 22 is formed into a "well" shape by high-strength bolts 221, transverse plates 222, and nuts 223. Among them: the bolts 221 are high-strength bolts for steel structures with a length of 690mm, and each bolt 221 is provided with a threaded screw with a length of 100mm, and its end is a circular arc convex surface; the transverse plate 222 is made of Q345C stainless steel plate with a thickness of 30mm and is processed into a rectangular steel plate with a length of 160mm and a width of 60mm, and a φ22mm round hole is drilled at both ends of the steel plate at a position 30mm away from the end face, and the distance between the two round holes is greater than the thickness of the movable plate 21 by 20mm, so that the movable plate 21 can move freely in the fixing frame 22; the nuts 223 are high-strength φ20mm nuts for steel structures.

[0050] In the area from the right angle inside the support frame 11 to the short oblique support 112, two φ22mm round holes are drilled on the base plate 12 and the patterned steel plate 41 close to and parallel to the short oblique support 112 to install a fixing frame 22; in the area from the short oblique support 112 to the long oblique support 112, two φ22mm round holes are drilled on the base plate 12 and the patterned steel plate 41 close to and parallel to the long oblique support 112 to install a fixing frame 22, and the distance between the two fixing frames 22 is 500mm. The fixing frame 22 close to the center side of the platform device 1 in each group of steel cage fixing devices 2 is 300mm away from the edge of the notch 13 on the center circular hole of the platform device 1.

[0051] During installation, each fixing frame 22 is installed perpendicular to the central axis of the steel cage fixing device 2. The specific installation steps are: pass the threaded screw end of a bolt 221 through a high-strength washer, a circular hole of a bottom transverse plate 222, a circular hole of a base plate 12, a circular hole of a patterned steel plate 41, a circular hole of a top transverse plate 222, a high-strength washer and two high-strength nuts 223, and tighten the nuts 223 to fix; pass the threaded screw end of another bolt 221 through a high-strength washer, a circular hole of a bottom transverse plate 222, a circular hole of a base plate 12, a circular hole of a patterned steel plate 41, a circular hole of a top transverse plate 222, a high-strength washer and two high-strength nuts 223, and tighten the nuts 223 to fix. At the circular hole on the top surface of the anti-skid patterned steel plate 41 , the high-strength bolts 221 are welded and connected to the anti-skid patterned steel plate 41 by artificial arc welding, so that the fixing frame 22 and the platform device 1 form a stable whole.

[0052] A solid steel plate raised stopper 23 with a length of 70 mm, a width of 60 mm and a height of 60 mm is welded on the top surface at a position 20 mm away from the front end surface of the moving plate 21 and is made of a Q345C stainless steel plate with a thickness of 60 mm.

[0053] The roller bracket 26 includes a base plate 261, a mounting frame 262, a mounting area 263, and a rolling drum 264. Three roller brackets 26 are arranged on the top surface of the anti-skid patterned steel plate 41 corresponding to the bottom end of the moving plate 21 in each set of the steel cage fixing device 2. During installation, the roller bracket 26 is installed perpendicular to the central axis of the steel cage fixing device 2, and the bottom surface of the base plate 261 of the roller bracket 26 is welded to the top surface of the anti-skid patterned steel plate 41. After installation, the roller bracket 26 is parallel to the fixing frame 22 to ensure that the moving plate 21 can move freely toward the center side of the platform device 1 or toward the outside of the platform device 1 in the fixing frame 22 and on the top surface of the roller bracket 26.

[0054] The base plate 261 is made of Q345C 10mm thick stainless steel plate and is processed into a rectangular steel plate with a length of 160mm, a width of 100mm and a height of 10mm. The top surfaces of both ends of the length are welded with mounting frames 262 facing upward and perpendicular to the length side of the base plate 261. The two mounting frames 262 are arranged at intervals to form an installation area 263.

[0055] The mounting frame 262 is made of Q345C stainless steel plate with a thickness of 30mm and is processed into a rectangular steel plate with a length of 100mm, a width of 30mm and a height of 90mm. A φ42mm round hole is drilled at a position 30mm from the center of the length side of the steel plate from the top end surface of the height side to install the rolling bearing 2643. The rolling bearing 2643 adopts NNCF5004CV SKF cylindrical roller bearing 2643 with an inner diameter of 20mm, an outer diameter of 42mm and a thickness of 30mm.

[0056] The rolling drum 264 includes a rolling shaft 2641, a cylindrical roller 2642, and a rolling bearing 2643. The rolling drum 264 is arranged in the installation area 263. The rolling shaft 2641 is made of HPB300φ20mm hot-rolled round steel bar. A steel cylindrical roller 2642 with a length of 70mm and a diameter of 100mm is inserted into the middle of the rolling shaft 2641. The outer surface of the cylindrical roller 2642 is smooth. During installation, the two ends of the rolling shaft 2641 are fixedly connected to the mounting frame 262 through the rolling bearing 2643. After installation, the outer peripheral top surface of the cylindrical roller 2642 is 20mm higher than the top surface of the mounting frame 262.

[0057] Three pads 27 are arranged on the top surface of the anti-slip patterned steel plate 41 corresponding to the bottom end of the moving plate 21 in each set of steel cage fixing devices 2. The pads 27 are made of Q345C stainless steel plate with a thickness of 60 mm and are processed into rectangular steel plates with a length of 160 mm, a width of 60 mm and a height of 150 mm.

[0058] The large-diameter bored pile construction platform device also includes a hole mouth protection device 3 arranged at the circular hole position in the central area of ​​the base plate 12. The hole mouth protection device 3 includes two foot pedals 31. The foot pedals 31 are connected with hinge plates 32 through hinges 33. The hinge plates 32 are provided with semicircular holes on the side away from the foot pedals 31. The semicircular holes of the two hinge plates 32 are combined to form a conduit 8 opening for inserting the conduit 8. The hole mouth protection device 3 is provided with two foot pedals 31 connected by hinges 33 and hinge plates 32 with semicircular holes at the central circular hole position of the base plate 12, so that the semicircular holes of the two hinge plates 32 can be combined to form a complete conduit 8 opening. Such a design not only ensures the safety of construction personnel when operating the bored pile hole mouth, prevents falling through the protection device, but also provides convenience, so that the conduit 8 can be smoothly inserted and easily disassembled when needed, thereby improving construction efficiency and ensuring construction safety.

[0059] The hole protection device 3 is composed of a foot pedal 31, a hinge plate 32, a patterned steel plate 41, a hinge 33, a conduit port 34, a steel cage hoisting port 35, a lifting ring 36, and an operating handle 37. The hole protection device 3 includes a foot pedal 31 and a hinge plate 32 rotatably connected to the foot pedal 31. The hinge plate 32 is opened during the process of lowering the concrete conduit 8, and is closed to support the concrete conduit 8 during the process of lengthening or / and removing the concrete conduit 8.

[0060] The foot pedal 31 and the hinge plate 32 are combined into a circular plate. A semicircular hole is provided in the middle position of the hinge plate 32 on the opposite side of the hinge 33. When the hinge plate 32 is closed, a conduit opening 34 is formed to facilitate the lifting or removal of the conduit. An operating handle 37 is provided in the middle part of the hinge plate 32 near the conduit opening 34 to facilitate the closing or flipping up of the hinge plate 32. A steel cage hoisting opening 35 is provided on the arc side of the foot pedal 31 to facilitate the hanging of the steel cage. A lifting ring 36 is provided on the top surface of the foot pedal 31 to facilitate the hoisting of the hole protection device 3.

[0061] Anti-skid patterned steel plates 41 are provided on the top surfaces of the foot pedal 31 and the hinge plate 32, respectively, to prevent construction operators from slipping on the foot pedal 31 or the top surfaces of the hinge plate 32. The orifice protection device 3 is provided with a foot pedal 31, which is convenient for construction operators to stand on the top surface to lift or remove the conduit 8. The orifice protection device 3 is also provided with a hinge plate 32. When the hinge plate 32 is closed, the conduit 8 can be lifted or removed; when the hinge plate 32 is flipped up and opened, the conduit 8 can be lowered.

[0062] During the construction process, safety is the primary task. In order to protect the life safety and health of construction workers, it is necessary to install an anti-skid patterned steel plate 41 on the top surface of the base plate 12. In this way, construction workers can prevent slipping accidents caused by wet or greasy ground when operating. At the same time, considering that the foot pedal 31 and the hinge plate 32 are also areas where construction workers often stand and move, it is also necessary to install an anti-skid patterned steel plate 41 on the top surface of these parts.

[0063] In a specific embodiment, the method for making the orifice protection device 3 is as follows:

[0064] The hole protection device 3 is composed of a foot pedal 31, a hinge plate 32, a hinge 33, a conduit port 34, a steel cage hoisting port 35, a lifting ring 36, and an operating handle 37. Two foot pedals 31 and two hinge plates 32 are combined to form a circular plate with a diameter equal to the diameter of the circular hole upper notch 13 on the top surface of the base plate 12 and the anti-slip patterned steel plate 41.

[0065] The foot pedal 31 and the hinge plate 32 are both made of Q345C stainless steel plate with a thickness of 20 mm, wherein: each foot pedal 31 is 1000 mm wide, and each hinge plate 32 is 400 mm wide. The foot pedal 31 and the hinge plate 32 are connected by a hinge 33, so that the two hinge plates 32 can be flipped upward.

[0066] A semicircular hole with a radius equal to the outer radius of the conduit 8 is arranged in the middle of the hinge plate 32 on the opposite side of the hinge 33. When the two hinge plates 32 are closed together, a concrete conduit opening 34 with a diameter equal to the outer diameter of the conduit 8 is formed. An operating handle 37 is arranged in the middle of the hinge plate 32 near the conduit opening 34. Three square steel cage hoisting openings 35 with a side length of 100 mm are evenly arranged on the arc side of each footboard 31. A lifting ring 36 is welded on the top surface of each footboard 31.

[0067] In a specific embodiment, the manufacturing method of the anti-slip device 4 is as follows:

[0068] The anti-skid device 4 is composed of a patterned steel plate 41 on the top surface of the base plate 12, a patterned steel plate 41 on the top surface of the footrest 31, and a patterned steel plate 41 on the top surface of the hinge plate 32. The anti-skid patterned steel plate 41 made of Q235B and 5 mm thick is welded on the top surface of the base plate 12; the anti-skid patterned steel plates 41 made of Q235B and 5 mm thick are welded on the top surfaces of the footrest 31 and the hinge plate 32, respectively.

[0069] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A large diameter cast-in-place pile construction platform device, characterized in that: It comprises a platform device (1) and a steel cage fixing device (2); The platform device (1) comprises a support frame (11) and a base plate (12) arranged on the support frame (11), wherein a circular hole for a steel cage to pass through is provided in the central area of ​​the base plate (12). The steel cage fixing device (2) comprises a movable plate (21) and a fixing frame (22); the movable plate (21) is slidably arranged on the platform device (1); a stopper (23) is arranged at one end of the movable plate (21) close to the hole; a positioning rod (25) is arranged at one end of the movable plate (21) away from the hole; the fixing frame (22) is arranged on the platform device (1) and is used to limit the movable plate (21) so that the movable plate (21) can only move along the length direction.

2. The large-diameter bored pile construction platform device according to claim 1, characterized in that: The support frame (11) is designed as a "mouth"-shaped structure, and oblique supports (112) are respectively arranged on adjacent sides inside the support frame (11).

3. The large diameter bored pile construction platform device according to claim 1, characterized in that: The fixing frame (22) comprises a transverse plate (222) and two bolts (221). The two bolts (221) pass through the base plate (12) and are connected to the transverse plate (222). A hole for the movable plate (21) to pass through is formed between the two bolts (221) and the transverse plate (222).

4. The large diameter bored pile construction platform device according to claim 1, characterized in that: A plurality of the fixing frames (22) are arranged at intervals along the length direction of the movable plate (21).

5. The large diameter bored pile construction platform device according to claim 1, characterized in that: A roller bracket (26) is provided on the platform device (1) corresponding to the bottom of the movable plate (21), and a roller for supporting the movable plate (21) is rotatably connected to the roller bracket (26). A cushion block (27) is detachably provided on the platform device (1) corresponding to the bottom of the movable plate (21), and the height of the cushion block (27) is not less than the height of the roller.

6. The large-diameter bored pile construction platform device according to claim 5, characterized in that: Positioning holes (24) are provided at intervals along the length direction on the movable plate (21), and the movement of the movable plate (21) along the length direction is limited by inserting limiting rods into the positioning holes (24) on both sides of the fixing frame (22).

7. The large-diameter bored pile construction platform device according to claim 1, characterized in that: The large-diameter bored pile construction platform device also includes a hole mouth protection device (3) arranged at the circular hole position in the central area of ​​the base plate (12), and the hole mouth protection device (3) includes two foot pedals (31), and the foot pedals (31) are connected to hinge plates (32) through hinges (33), and the hinge plates (32) are provided with semicircular holes on the side away from the foot pedals (31), and the semicircular holes of the two hinge plates (32) are combined to form a conduit (8) opening for passing the conduit (8).

8. The large-diameter bored pile construction platform device according to claim 7, characterized in that: A stepped notch (13) is arranged around the circular hole in the central area of ​​the base plate (12), and the hole protection device (3) is arranged in the notch (13).

9. The large-diameter bored pile construction platform device according to claim 2, characterized in that: An anti-skid patterned steel plate (41) is arranged on the top surface of the base plate (12), and a circular hole having the same size as the circular hole in the central area of ​​the base plate (12) is arranged in the central area of ​​the anti-skid patterned steel plate (41).

10. The large-diameter bored pile construction platform device according to claim 1, characterized in that: A circular hanging ring (14) is arranged in the middle of each side of the outer side of the support frame (11).

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