Reinforcement cage mounting and positioning frame and construction method thereof

Abstract

The invention provides a reinforcement cage mounting and positioning frame and a construction method thereof. The reinforcement cage mounting and positioning frame comprises a frame, a center cylinder is arranged in the frame, a plurality of telescopic clamping columns are annularly arranged at the top end of the center cylinder around the center point of the center cylinder, each telescopic clamping column comprises a sleeve, and a positioning rod is telescopically inserted into the sleeve. The positioning frame is arranged at the top of the pile foundation hole to form a horizontal supporting structure, the reinforcement cage can be accurately and horizontally erected in the center of the pile foundation hole, the centering performance and stability of installation are remarkably improved, and in the erection process of the reinforcement cage, synchronous rotation of the center cylinder and the telescopic guide disc is achieved through the locking mechanism; therefore, the insertion angle and position of the telescopic clamping column are flexibly adjusted, interference or collision between the telescopic clamping column and a vertical main reinforcement of the reinforcement cage is effectively avoided, meanwhile, the telescopic guide disc can be independently rotated to control the telescopic clamping column to stretch out and draw back synchronously by only locking the center cylinder and the frame, and the telescopic clamping column is accurately inserted below a stirrup at the top of the reinforcement cage. And stable supporting and rapid positioning of the reinforcement cage are achieved.

Description

Technical Field

[0001] The present invention relates to the field of pile foundation construction, and in particular to a steel reinforcement cage installation positioning frame and a construction method thereof. Background Art

[0002] In the construction of pile foundation projects, the installation quality of the steel reinforcement cage directly affects the overall bearing capacity and structural safety of the pile body. Especially during the hoisting of the steel reinforcement cage for deep piles, due to the large length of the steel reinforcement cage, it is often necessary to adopt a segmented installation method for construction. However, in the actual operation process, affected by factors such as the complex construction site environment, limited accuracy of hoisting equipment, and manual operation errors, the steel reinforcement cage is extremely prone to deviation during hoisting and positioning. The deviation of the steel reinforcement cage will not only cause uneven concrete cover thickness, affecting the durability and crack resistance of the pile foundation, but may also result in excessive deviation in the butt joint position of the main reinforcement, thereby affecting the welding quality and connection strength. Unqualified main reinforcement connection quality will directly weaken the overall structural performance of the steel reinforcement cage, reduce its bearing capacity, and even cause structural quality problems such as pile hole deviation. Once such problems occur, it is often necessary to carry out rework, which not only increases the construction cost, seriously affects the construction progress, but also brings greater quality hazards and safety risks. Therefore, a steel reinforcement cage installation positioning frame and a construction method thereof are proposed to solve the above problems. Summary of the Invention

[0003] The main purpose of the present invention is to provide a steel reinforcement cage installation positioning frame and a construction method thereof, which solve the problem that the segmented steel reinforcement cage is extremely prone to deviation during installation and alignment.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a steel reinforcement cage installation positioning frame and a construction method thereof, including a frame, a central cylinder is arranged in the frame, a plurality of telescopic clamping columns are arranged annularly around the center point at the top of the central cylinder, the telescopic clamping column includes a sleeve, a positioning rod is telescopically inserted in the sleeve, an ear plate for fixing is arranged outside the sleeve, a guide rod is arranged at the bottom of the tail end of the positioning rod, a telescopic guide disk is rotatably arranged outside the central cylinder, a guide arc groove with the same number as the telescopic clamping column is arranged at the top of the telescopic guide disk, the guide rod is slidably matched with the corresponding guide arc groove, a first driving device for driving the telescopic guide disk to rotate is arranged on the side surface of the frame, a plurality of unloading blocks arranged annularly around the center point are hinged at the bottom of the frame, the central cylinder is rotatably arranged in the frame, and a locking mechanism that can be locked with the telescopic guide disk and / or the frame is arranged outside the adjustable central cylinder.

[0005] In a preferred solution, the first driving device includes a first driving device, a first driving gear is installed on the output end of the first driving device, and a driven gear meshing with the first driving gear is arranged on the outer ring of the telescopic guide disk.

[0006] In the preferred embodiment, the locking mechanism includes a mounting ring fixed to the outside of the central tube, the mounting ring is located between the telescopic guide plate and the frame, and a locking structure that can move up and down is provided on the mounting ring through a movable groove. There are multiple locking structures, which are distributed in a ring around the center point of the mounting ring. The mounting ring is also provided with a control mechanism for controlling the up and down movement of the locking structure.

[0007] In the preferred embodiment, the locking structure includes two arc plates arranged radially along the mounting ring, the arc plates movably penetrate the mounting ring through movable grooves, and the top and bottom of the two arc plates are respectively provided with upper locking plates and lower locking plates, and the top of the lower locking plate is provided with multiple tension springs located between the two arc plates, the top of the tension spring is connected to the bottom of the mounting ring, and the upper locking plate maintains a contact and fit relationship with the telescopic guide plate under the action of the tension spring.

[0008] In the preferred embodiment, both sides of the lower locking plate are provided with lower abutment strips extending to the outside of the arc-shaped plate, and the insertion ends thereof are provided with wedge-shaped grooves; The control mechanism includes an outer rotating ring rotatably mounted on the outside of the mounting ring, the inner side below the outer rotating ring is connected to a lower inner rotating ring via a lower connecting block, and parallel downward pressing wedge blocks are arranged at the bottom of the outer rotating ring and the lower inner rotating ring. The number of the downward pressing wedge blocks is the same as the locking structure and corresponds to the lower interference strip. When the downward pressing wedge block is rotated to interfere with the corresponding lower interference strip, the locking structure can be pressed down and the lower locking plate can maintain an interference and fitting relationship with the frame.

[0009] In the preferred embodiment, a second driving device for driving the control mechanism to rotate is provided on the side of the frame, and the second driving device includes a second driving device and a second driving gear. A plurality of key bars are provided on the output shaft of the second driving device. The second driving gear is movably mounted on the output shaft of the second driving device, and a key groove for slidingly matching with the key bar is provided on its inner ring. An upper limit plate and a lower limit plate respectively located at both ends of the key bar are also provided on the output shaft of the second driving device. A tension spring located between the lower limit plate and the second driving gear is also mounted on the output shaft of the second driving device, and the outer ring of the outer rotating ring is provided with driven teeth that can mesh with the second driving gear.

[0010] In a preferred embodiment, a gear disengagement assembly is also provided on the side of the frame, which includes a telescopic cylinder, and a lower pressure plate located above the second driving gear is provided at the telescopic end of the telescopic cylinder.

[0011] In the preferred embodiment, a movable slot is provided on the top of the two arc plates, a plug plate that movably cooperates with the movable slot is provided at the bottom of the upper locking plate, and upper abutment strips extending to the outside of the arc plate are provided on both sides of the upper locking plate, and a wedge-shaped groove is provided at the insertion end.

[0012] In the preferred embodiment, the inner side of the upper part of the outer rotating ring is connected to the upper inner rotating ring through the upper connecting block, and the tops of the outer rotating ring and the upper inner rotating ring are provided with parallel upper pressing wedge blocks, the number of the upper pressing wedge blocks is the same as the locking structure, and corresponds to the upper abutment strip, the upper pressing wedge block is located behind the lower pressing wedge block, and the length of the lower abutment strip can maintain an abutment relationship with the lower pressing wedge block after the upper pressing wedge block is inserted into the upper abutment strip; When the downwardly pressed wedge block is inserted into the upper abutment strip, the upper locking piece can be abutted against and fitted with the telescopic guide plate while the lower locking piece abuts against and fits with the frame.

[0013] The method comprises: S1, after the pile foundation is bored, a positioning frame is installed above the steel casing at the top of the pile foundation hole, and the flatness of the positioning frame is adjusted by a load-relief block at the bottom of the positioning frame; S2. After the flatness of the positioning frame is adjusted, its center position is measured and positioned at the center point of the pile foundation; S3, hoisting the first section of the steel cage into the steel casing, locking the center tube and the telescopic guide plate by using the locking mechanism, and then driving the telescopic guide plate and the center tube to rotate simultaneously by the first driving device, adjusting the insertion position of the telescopic clamping column to avoid the vertically arranged main reinforcement; S4, then release the lock between the central tube and the telescopic guide plate, and use the locking mechanism to lock the central tube and the frame at the same time, then drive the telescopic guide plate to rotate through the first driving device, so that the guide rod of the telescopic clamping column is inserted under the stirrups at the top of the steel cage to ensure the stability of the steel cage, and use the locking structure to lock the telescopic guide plate, the central tube and the frame at the same time; S5, hoist the second steel cage to the top of the first steel cage, connect the main bars of the two, hoist the connected steel cage again, adjust the locking mechanism to the locking state of the center tube and the frame, then drive the telescopic guide plate to reverse through the first driving device to retract the guide rod, and then continue to lower the steel cage; S6. Repeat steps S3 to S5 to complete the installation of the subsequent steel cage. The present invention provides a steel reinforcement cage installation positioning frame and a construction method thereof. By arranging a positioning frame at the top of the pile foundation hole to form a horizontal support structure, the steel reinforcement cage can be accurately horizontally erected at the center position of the pile foundation hole, significantly improving the centering and stability of the installation. During the erection process of the steel reinforcement cage, the locking mechanism is used to realize the synchronous rotation of the central cylinder and the telescopic guide disc, thereby flexibly adjusting the insertion angle and position of the telescopic clamping column, effectively avoiding interference or collision with the vertical main bars of the steel reinforcement cage. At the same time, by only locking the central cylinder and the frame, the telescopic guide disc can be rotated independently to control the synchronous expansion and contraction of the telescopic clamping column, and accurately insert it under the top stirrups of the steel reinforcement cage to achieve the stable support and rapid positioning of the steel reinforcement cage. In addition, during the hoisting operation, the central cylinder, the telescopic guide disc and the frame can be synchronously locked through the locking mechanism, enhancing the rigidity and stability of the overall structure, ensuring the safety and controllability of the hoisting process, realizing the automatic operation of the positioning and support of the steel reinforcement cage, improving the construction efficiency and installation accuracy, and facilitating the efficient and accurate butt joint between multiple sections of the steel reinforcement cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the drawings and embodiments: Figure 1 is the overall structure diagram of the present invention; Figure 2 is the structure diagram of the telescopic clamping column of the present invention; Figure 3 is the present invention Figure 1 semi-sectional structure diagram; Figure 4 is the structure diagram of the frame of the present invention; Figure 5 is the structure diagram of the central cylinder, the telescopic guide disc and the locking mechanism of the present invention; Figure 6 is the present invention Figure 6 semi-sectional structure diagram; Figure 7 is the connection structure diagram of the installation ring and the anti-lock structure of the present invention; Figure 8 is the connection structure diagram of the control mechanism of the present invention; Figure 9 is the exploded structure diagram of the second driving device of the present invention; Figure 10 is the locking structure schematic diagram of the locking mechanism and the telescopic guide disc of the present invention; Figure 11 is the locking structure diagram of the locking mechanism and the frame of the present invention; Figure 12 is the locking structure diagram of the locking mechanism and the telescopic guide disc and the frame simultaneously of the present invention; In the figure: frame 1; unloading block 2; telescopic clamping column 3; sleeve 301; ear plate 302; positioning rod 303; guide rod 304; rotating bearing 4; center tube 5; telescopic guide plate 6; guide arc groove 7; first driving device 8; first driving device 802; first driving gear 803; locking mechanism 9; mounting ring 90; movable groove 91; locking structure 92; arc plate 920; lower locking plate 921; upper locking plate 922; tension spring 924; lower contact strip 92 5; control mechanism 93; outer rotating ring 930; lower connecting block 931; lower inner rotating ring 932; downward pressing wedge block 933; upward pressing wedge block 934; upper connecting block 935; upper inner rotating ring 936; movable slot 927; second driving device 10; second driving device 101; key bar 102; second driving gear 103; keyway 104; lower limit plate 105; upper limit plate 106; tension spring 107; telescopic cylinder 108; lower pressure plate 109. DETAILED DESCRIPTION

[0015] Example 1 like Figures 1-12 As shown, a steel cage installation positioning frame includes a frame 1, a center tube 5 is arranged in the frame 1, the center tube 5 is penetrated in the frame 1, and its inner diameter is larger than the outer diameter of the steel cage, so that the steel cage is inserted into the pile foundation hole therefrom. A plurality of telescopic clamping columns 3 are arranged in a ring around the center point of the top of the center tube 5. In this embodiment, the number of the telescopic clamping columns 3 is specifically four, and the four telescopic clamping columns 3 are equidistantly distributed. The telescopic clamping column 3 includes a sleeve 301, and a positioning rod 303 is telescopically inserted in the sleeve 301. The end of the positioning rod 303 can be inserted into or out of the inner ring range of the center tube 5 by telescoping the positioning rod 303 in the sleeve 301. An ear plate 302 for fixing is arranged on the outside of the sleeve 301. The specific number of the ear plates 302 is two, and they are arranged front and back on the outside of the sleeve 301, so that the telescopic clamping column 3 can be firmly fixed on the top of the center tube 5. A guide rod 304 is arranged at the bottom of the tail end of the positioning rod 303.

[0016] The outside of the center tube 5 is rotatably set on the telescopic guide plate 6. Specifically, an annular groove is set on the outside of the center tube 5, and a bearing is set in the annular groove. The telescopic guide plate 6 is rotatably installed in the annular groove through the bearing. The top of the telescopic guide plate 6 is provided with guide arc grooves 7 with the same number as the telescopic clamping column 3. The guide rod 304 is slidably matched with the corresponding guide arc groove 7. The side of the frame 1 is provided with a first driving device 8 for driving the telescopic guide plate 6 to rotate.

[0017] With such a design, the telescopic guide plate 6 can be driven to rotate by the first driving device 8, so that the positioning rod 303 can be extended and retracted under the guidance of the guiding arc groove 7 by utilizing the sliding cooperation between the guide rod 304 and the guiding arc groove 7, thereby realizing the synchronous extension and retraction of multiple positioning rods 303.

[0018] A plurality of unloading blocks 2 arranged annularly around the center point are hinged to the bottom of the frame 1. The frame 1 can be located above the pile foundation hole through the unloading blocks 2. At the same time, it is convenient to level the frame 1 by adjusting the height of the unloading blocks 2. In this embodiment, the number of the unloading blocks 2 is four, and they are specifically hinged to the bottom of the frame 1 through spherical hinges. In addition, the unloading blocks 2 are composed of four isosceles trapezoidal blocks, and adjusting bolts and nuts are arranged between the two isosceles trapezoidal blocks arranged vertically on the left and right, and limiting rods for moving towards each other are arranged between the two isosceles trapezoidal blocks arranged horizontally on the upper and lower. They are ordinary commercially available products and are common existing technologies in this field, so they will not be described in detail here.

[0019] The central tube 5 is rotatably arranged in the frame 1. Specifically, an installation bearing 4 for installing the central tube 5 is arranged in the frame 1. The central tube 5 is provided with an installation groove on the outside that fits with the installation bearing 4, and a locking mechanism 9 that can be locked with the telescopic guide disk 6 and / or the frame 1 is arranged outside the central tube 5.

[0020] With such a design, the central tube 5 can be locked with the telescopic guide disk 6 through the locking mechanism 9. Therefore, the telescopic guide disk 6 and the central tube 5 can be driven to rotate synchronously by the first driving device 8, so as to adjust the insertion position of the telescopic clamping column 3 and avoid conflicting with the vertical main reinforcement of the steel reinforcement cage. At the same time, when it is necessary to adjust the telescopic length of the telescopic clamping column 3, the locking relationship between the central tube 5 and the telescopic guide disk 6 can be released, and the central tube 5 can be locked with the frame 1. Thus, the first driving device 8 can be used to only drive the telescopic guide disk 6 to rotate to adjust the telescopic length of the telescopic clamping column 3. At the same time, the locking of the central tube 5 and the frame 1 can provide a stable rotation environment for the telescopic guide disk 6. In addition, after the adjustment is completed, the telescopic guide disk 6, the central tube 5 and the frame 1 can be locked simultaneously by using the locking mechanism 9, so as to avoid unnecessary movement of the device during use.

[0021] In a preferred solution, the first driving device 8 includes a first driving device 802. A first driving gear 803 is installed on the output end of the first driving device 802. A driven tooth meshing with the first driving gear 803 is arranged on the outer ring of the telescopic guide disk 6. Thus, the telescopic guide disk 6 can be rotated by the output of the first driving gear 803. In this embodiment, in order to improve the installation stability of the first driving device 802, a support frame for supporting the first driving gear 803 is further arranged at the bottom of the frame 1. In the preferred embodiment, the locking mechanism 9 includes a mounting ring 90 fixed to the outside of the central tube 5, the mounting ring 90 is located between the telescopic guide plate 6 and the frame 1, and a locking structure 92 that can move up and down is provided on the mounting ring 90 through a movable groove 91. The number of the locking structures 92 is multiple and they are distributed in a ring around the center point of the mounting ring 90. In this embodiment, the number of the locking structures 92 is two, and the mounting ring 90 is also provided with a control mechanism 93 for controlling the up and down movement of the locking structure 92.

[0022] Among them, the locking structure 92 includes two arc plates 920 radially arranged along the mounting ring 90, and the arc plates 920 are movably inserted through the mounting ring 90 through the movable groove 91, and the top and bottom of the two arc plates 920 are respectively provided with an upper locking plate 922 and a lower locking plate 921, and the length of the arc plates 920 meets the requirements that when the upper locking plate 922 is moved up and down, the upper locking plate 922 is in contact with the telescopic guide disk 6, and the lower locking plate 921 is in contact with the frame 1, and the top of the lower locking plate 921 is provided with a plurality of tension springs 924 located between the two arc plates 920, the top of the tension spring 924 is connected to the bottom of the mounting ring 90, and the two ends of the tension spring 924 are respectively fixed to the lower locking plate 921 and the mounting ring 90, and the upper locking plate 922 maintains a contacting and fitting relationship with the telescopic guide disk 6 under the action of the tension spring 924.

[0023] Such a design allows the locking structure 92 to maintain the upper locking plate 922 in contact with the telescopic guide disk 6 through the pulling force of the tension spring 924 when it is not affected by the outside, thereby achieving the effect of locking the telescopic guide disk 6 and the center tube 5. It should be noted that the tension of the tension spring 924 satisfies the force required to lock the telescopic guide disk 6 and the center tube 5. In order to increase the friction between the upper locking plate 922 and the lower locking plate 921 when they are in contact, a rubber sheet is provided on the contact surface.

[0024] In addition, lower abutment strips 925 extending to the outside of the arc-shaped plate 920 are provided on both sides of the lower locking piece 921, and a wedge-shaped groove is provided at the insertion end thereof.

[0025] The control mechanism 93 includes an outer rotating ring 930 rotatably mounted on the outside of the mounting ring 90, and the inner side below the outer rotating ring 930 is connected to a lower inner rotating ring 932 through a lower connecting block 931, so that the lower inner rotating ring 932 can rotate synchronously with the outer rotating ring 930, and parallel downward pressing wedge blocks 933 are arranged at the bottom of the outer rotating ring 930 and the lower inner rotating ring 932. The number of downward pressing wedge blocks 933 is the same as that of the locking structure 92, and corresponds to the lower contact strip 925. After the downward pressing wedge block 933 is rotated to come into contact with the corresponding lower contact strip 925, the locking structure 92 can be pressed down, and the lower locking plate 921 can maintain a contacting and fitting relationship with the frame 1, thereby switching the locking of the center tube 5 and the telescopic guide plate 6 or the frame 1.

[0026] In a preferred embodiment, a second driving device 10 for driving the rotation of the driving control mechanism 93 is provided on the side surface of the frame 1. The second driving device 10 includes a second driving device 101 and a second driving gear 103. A plurality of key bars 102 are provided on the output shaft of the second driving device 101. In this embodiment, the number of key bars 102 is four, and they are annularly and equidistantly distributed. The second driving gear 103 is movably sleeved on the output shaft of the second driving device 101, and key grooves 104 slidably engaged with the key bars 102 are provided on its inner ring. Thus, while the second driving gear 103 can rotate synchronously with the output shaft, it can slide up and down on its outside. Upper limit plates 106 and lower limit plates 105 are respectively provided at both ends of the key bars 102 on the output shaft of the second driving device 101, which play a role of sliding limit. A tension spring 107 is also sleeved on the output shaft of the second driving device 101 between the lower limit plate 105 and the second driving gear 103. A driven tooth that can be engaged with the second driving gear 103 is provided on the outer ring of the outer rotating ring 930.

[0027] In addition, a gear disengaging assembly is also provided on the side surface of the frame 1, which includes a telescopic cylinder 108, and a lower pressing plate 109 located above the second driving gear 103 is provided at the telescopic end of the telescopic cylinder 108.

[0028] With such a design, the second driving gear 103 can maintain the meshing relationship with the driven tooth of the outer rotating ring 930 under the tension of the tension spring 107, so as to achieve the transmission effect. At the same time, by retracting the telescopic cylinder 108, the lower pressing plate 109 can press down the second driving gear 103 to disengage it from the driven tooth of the outer rotating ring 930 and disconnect the transmission relationship, thereby facilitating the synchronous rotation of the central cylinder 5 and the telescopic guide disk 6. At the same time, when the lower pressing plate 109 rises, the second driving gear 103 can be reset under the action of the tension spring 107.

[0029] It should be noted that both the first driving device 802 and the second driving device 101 are composed of a motor and a speed reducer drive combination. The telescopic cylinder 108 can be one of a pneumatic cylinder, an electric cylinder, and a hydraulic cylinder. In addition, a support frame for supporting the second driving device 101 and the telescopic cylinder 108 is provided on the side surface of the frame 1.

[0030] In a preferred embodiment, in order to achieve the effect of simultaneously locking the central cylinder 5, the telescopic guide disk 6, and the frame 1, movable slots 927 are provided at the tops of both arc-shaped plates 920. A plug plate 923 that is movably engaged with the movable slots 927 is provided at the bottom of the upper locking piece 922. Thus, it is convenient for the upper locking piece 922 to move through the plug plate 923 in the movable slots 927 to achieve the effect of rising and fitting with the telescopic guide disk 6 while fitting with the frame 1 at the same time as the lower locking piece 921.

[0031] It should be noted that in order to prevent the plug plate 923 from detaching from the movable slot 927, the length of the plug plate 923 plus the length of the arc plate 920 is greater than the length of the telescopic guide plate 6 and the frame 1. In order to further improve the stability during sliding, a vertical sliding limit groove and limit block can be set between the plug plate 923 and the movable slot 927.

[0032] Upper abutment strips 926 extending to the outside of the arc-shaped plate 920 are provided on both sides of the upper locking piece 922, and the insertion ends thereof are provided with wedge-shaped grooves.

[0033] The inner side above the outer rotating ring 930 is connected to the upper inner rotating ring 936 through the upper connecting block 935. The upper inner rotating ring 936 and the lower inner rotating ring 932 are respectively located on the upper and lower sides of the mounting ring 90. The tops of the outer rotating ring 930 and the upper inner rotating ring 936 are provided with parallel upper pressure wedge blocks 934. The number of the upper pressure wedge blocks 934 is the same as that of the locking structure 92, and corresponds to the upper contact bar 926. The upper pressure wedge block 934 is located behind the lower pressure wedge block 933, and the length of the lower contact bar 925 can maintain a contact relationship with the lower pressure wedge block 933 after the upper pressure wedge block 934 is inserted into the upper contact bar 926.

[0034] With such a design, after the wedge block 933 is pressed down and inserted into the upper abutment strip 926 , the upper locking piece 922 can be abutted against and fitted with the telescopic guide plate 6 while the lower locking piece 921 abuts against and fits with the frame 1 .

[0035] It should be noted that the upper connecting block 935 and the lower connecting block 931 are arranged in a position to avoid affecting the rotational conflict between the upper pressing wedge block 934 , the lower pressing wedge block 933 and the lower contact bar 925 , the upper contact bar 926 .

[0036] Example 2 Further illustrate with reference to Examples 1 and 2, Figures 1-12 The structure shown, according to the above-mentioned construction method of installing a steel cage positioning frame, the method includes: S1. After the pile foundation is formed, a positioning frame is installed above the steel casing at the top of the pile foundation hole, and its flatness is adjusted by the unloading block 2 of the positioning frame; S2. After the flatness of the positioning frame is adjusted, measure its center position to ensure that it is positioned at the center point of the pile foundation; S3, hoist the first section of the steel cage into the steel casing, and after it is in place, ensure that the locking structure 92 locks the central tube 5 and the telescopic guide plate 6, and the second driving gear 103 of the second driving device 10 is disengaged from the outer rotating ring 930 through the gear disengagement assembly, and then the telescopic guide plate 6 and the central tube 5 are driven simultaneously by the first driving device 802, and the insertion position of the telescopic clamping column 3 is adjusted to avoid the vertical main reinforcement; S4. Then unlock the central cylinder 5 from the telescopic guide disk 6. At the same time, use the anti-lock structure 92 to lock the central cylinder 5 to the frame 1. Then drive the telescopic guide disk 6 to rotate by the first driving device 802, so that the guide rod 304 of the telescopic locking post 3 is inserted under the top stirrup of the steel reinforcement cage to ensure the stability of the steel reinforcement cage, and use the anti-lock structure 92 to lock the telescopic guide disk 6, the central cylinder 5 and the frame 1 simultaneously; S5. Lift the second section of the steel reinforcement cage above the first section of the steel reinforcement cage and connect the main reinforcements of the two sections. The main reinforcements of the two sections can be installed by welding or threaded sleeves. Lift the connected steel reinforcement cage again, and adjust the anti-lock structure 92 to the locked state between the central cylinder 5 and the frame 1. Then drive the telescopic guide disk 6 to reverse by the first driving device 802 to retract the guide rod 304, and then continue to lower the steel reinforcement cage; S6. Repeat the steps of S3 to S5 to complete the installation of the subsequent steel reinforcement cages.

[0037] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A steel reinforcement cage installation positioning frame, characterized in that: The invention comprises a frame (1), wherein a central tube (5) is arranged in the frame (1), a plurality of telescopic clamping columns (3) are arranged in a ring around the center point of the central tube (5) at the top end, the telescopic clamping column (3) comprises a sleeve (301), a positioning rod (303) is telescopically inserted in the sleeve (301), an ear plate (302) for fixing is arranged on the outside of the sleeve (301), a guide rod (304) is arranged at the bottom of the tail end of the positioning rod (303), the outside of the central tube (5) is rotatably arranged on a telescopic guide plate (6), and the top of the telescopic guide plate (6) is provided with a The frame (1) is provided with guide arc grooves (7) having the same number as the telescopic clamping column (3), the guide rods (304) are slidably matched with the corresponding guide arc grooves (7), a first driving device (8) for driving the telescopic guide disk (6) to rotate is provided on the side of the frame (1), a plurality of unloading blocks (2) arranged in a ring around a center point are hingedly connected to the bottom of the frame (1), a central cylinder (5) is rotatably arranged in the frame (1), and a locking mechanism (9) capable of locking with the telescopic guide disk (6) and / or the frame (1) is provided on the outside of the adjustable central cylinder (5).

2. The cage installation positioning frame according to claim 1, characterized in that: The first driving device (8) comprises a first driving device (802), a first driving gear (803) being mounted on the output end of the first driving device (802), and an outer ring of the telescopic guide plate (6) being provided with driven teeth meshing with the first driving gear (803).

3. The installation and positioning frame for a steel reinforcement cage according to claim 2, characterized in that: The locking mechanism (9) comprises a mounting ring (90) fixedly mounted on the outside of the central tube (5), the mounting ring (90) being located between the telescopic guide plate (6) and the frame (1), a locking structure (92) movable up and down is provided on the mounting ring (90) through a movable groove (91), the locking structures (92) being provided in a plurality and being distributed in a ring shape around the center point of the mounting ring (90), and a control mechanism (93) for controlling the upward and downward movement of the locking structure (92) is also provided on the mounting ring (90).

4. The cage reinforcement installation positioning frame according to claim 3, wherein: The locking structure (92) comprises two arc-shaped plates (920) radially arranged along the mounting ring (90); the arc-shaped plates (920) movably penetrate the mounting ring (90) through the movable groove (91); and the top and bottom of the two arc-shaped plates (920) are respectively provided with an upper locking plate (922) and a lower locking plate (921); the top of the lower locking plate (921) is provided with a plurality of tension springs (924) located between the two arc-shaped plates (920); the top of the tension spring (924) is connected to the bottom of the mounting ring (90); and the upper locking plate (922) maintains a contacting and fitting relationship with the telescopic guide plate (6) under the action of the tension spring (924).

5. The positioning frame for installing a steel reinforcement cage according to claim 4, characterized in that: Both sides of the lower locking plate (921) are provided with lower abutment strips (925) extending to the outside of the arc-shaped plate (920), and the insertion ends thereof are provided with wedge-shaped grooves; The control mechanism (93) comprises an outer rotating ring (930) rotatably mounted on the outside of the mounting ring (90); the inner side below the outer rotating ring (930) is connected to a lower inner rotating ring (932) via a lower connecting block (931); parallel downward pressing wedge blocks (933) are arranged at the bottom of the outer rotating ring (930) and the lower inner rotating ring (932); the number of the downward pressing wedge blocks (933) is the same as that of the locking structure (92), and they correspond to the lower abutment strips (925); when the downward pressing wedge blocks (933) are rotated to come into abutment with the corresponding lower abutment strips (925), the locking structure (92) can be pressed downward, and the lower locking plate (921) can be kept in abutment and fit relationship with the frame (1).

6. The cage installation positioning frame according to claim 5, characterized in that: A second driving device (10) for driving the control mechanism (93) to rotate is arranged on the side of the frame (1). The second driving device (100) comprises a second driving device (101) and a second driving gear (103). A plurality of key bars (102) are arranged on the output shaft of the second driving device (101). The second driving gear (103) is movably mounted on the output shaft of the second driving device (101), and a key groove (104) for slidingly matching with the key bar (102) is arranged on the inner ring of the second driving gear (103). An upper limit plate (106) and a lower limit plate (105) respectively located at two ends of the key bar (102) are arranged on the output shaft of the second driving device (101). A tension spring (107) located between the lower limit plate (105) and the second driving gear (103) is also mounted on the output shaft of the second driving device (101). The outer ring of the outer rotating ring (930) is provided with driven teeth that can mesh with the second driving gear (103).

7. The a steel reinforcement cage installation positioning frame according to claim 6, wherein: A gear disengagement assembly is also provided on the side of the frame (1), which comprises a telescopic cylinder (108), and a lower pressing plate (109) located above the second driving gear (103) is provided at the telescopic end of the telescopic cylinder (108).

8. The cage installation positioning frame according to any one of claims 5-7, characterized in that: The tops of the two arc-shaped plates (920) are each provided with a movable slot (927), the bottom of the upper locking plate (922) is provided with an insert plate (923) that movably cooperates with the movable slot (927), and both sides of the upper locking plate (922) are provided with upper abutment strips (926) that extend to the outside of the arc-shaped plates (920), and the insertion ends thereof are provided with wedge-shaped grooves.

9. The cage installation positioning frame according to claim 8, characterized in that: The inner side above the outer rotating ring (930) is connected to an upper inner rotating ring (936) via an upper connecting block (935). Upper pressing wedge blocks (934) are arranged in parallel on the top of the outer rotating ring (930) and the upper inner rotating ring (936). The number of the upper pressing wedge blocks (934) is the same as that of the locking structure (92) and corresponds to the upper abutment bar (926). The upper pressing wedge blocks (934) are located behind the lower pressing wedge blocks (933). The length of the lower abutment bar (925) can maintain a abutment relationship with the lower pressing wedge block (933) after the upper pressing wedge block (934) is inserted into the upper abutment bar (926). After the pressing wedge block (933) is inserted into the upper contact strip (926), the upper locking piece (922) can be in contact with the telescopic guide disc (6) while the lower locking piece (921) is in contact with and fits against the frame (1).

10. The construction method of a steel cage installation positioning frame according to any one of claims 1-9, characterized in that: The method includes: S1. After the pile foundation hole is formed, install a positioning frame above the steel casing at the top of the pile foundation hole, and adjust its flatness through the unloading block (2) at the bottom of the positioning frame; S2. After the flatness of the positioning frame is adjusted, measure its central position and position it at the center point of the pile foundation; S3. Hoist the first section of the steel reinforcement cage into the steel casing, lock the central cylinder (5) and the telescopic guide disc (6) by using the locking mechanism (9), and then simultaneously drive the telescopic guide disc (6) and the central cylinder (5) to rotate through the first driving device (8) to adjust the insertion position of the telescopic clamping column (3) so that it avoids the main reinforcement arranged vertically; S4. Then unlock the central cylinder (5) and the telescopic guide disc (6), and at the same time lock the central cylinder (5) and the frame (1) by using the locking mechanism (9), and then drive the telescopic guide disc (6) to rotate through the first driving device (8) so that the guide rod (304) of the telescopic clamping column (3) is inserted under the stirrup at the top of the steel reinforcement cage to ensure the stability of the steel reinforcement cage, and lock the telescopic guide disc (6), the central cylinder (5) and the frame (1) simultaneously by using the locking structure (92); S5. Hoist the second section of the steel reinforcement cage above the first section of the steel reinforcement cage, connect the main reinforcements of the two sections, hoist the connected steel reinforcement cage again, adjust the locking mechanism (9) to the locked state of the central cylinder (5) and the frame (1), then drive the telescopic guide disc (6) to reverse by the first driving device (8) to retract the guide rod (304), and then continue to lower the steel reinforcement cage; S6. Repeat steps S3 to S5 to complete the installation of the subsequent steel reinforcement cages.

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