A prefabricated column hoisting positioning device

Abstract

The embodiment of the present application provides a prefabricated column hoisting and positioning device, which relates to the technical field of building construction equipment. A prefabricated column hoisting and positioning device includes a prefabricated column, the top of which is fixedly connected with a U-shaped hanging point, the bottom of which is provided with a reserved hole, and the bottom of which is provided with a cement boss. In the present invention, a worker squeezes the connecting rod inward, and the connecting rod pushes the limit push plate to move, and the limit push plate drives the push-pull member, the reset rod and the lifting triangle block to rise. The lifting triangle block squeezes the inclined surface of the limit triangle block during the rising process. When the lifting triangle block continues to move upward, the bottom surface of the lifting triangle block contacts the straight surface of the limit triangle block, so that the limit triangle block limits the movement of the lifting triangle block. At this time, the hook will be stuck in the U-shaped hanging point, reducing the risk of falling of the prefabricated column due to shaking and other reasons during the movement, and improving the safety of the prefabricated column during the lifting process.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction equipment, and in particular relates to a prefabricated column hoisting and positioning device. Background Art

[0002] The precast column hoisting and positioning device is a device used in building construction, especially in large-scale structural projects such as bridges and high-rise buildings, to ensure that the precast columns can be accurately and safely hoisted to the designated position. During the installation of precast concrete columns, the precast columns need to be accurately positioned, and the key indicator for the precise positioning of precast columns is verticality. Usually, large-scale lifting equipment is used to lift the precast columns and install them at the predetermined position on the top surface of the pedestal.

[0003] In the prior art (the patent application with announcement number CN111362141A and patent name of prefabricated column hoisting and positioning device), the control unit identifies the input signal and feeds back the signal to the actuator unit to control the actuator unit to act as required, thereby realizing the positioning of the prefabricated column. The actuator unit converts various forms of energy into mechanical energy according to the instructions of the control unit to push the prefabricated column to move, thereby positioning the prefabricated column. The use of this mechatronic prefabricated column hoisting and positioning device can realize the automatic positioning of the prefabricated column, with high installation and positioning efficiency, high positioning accuracy, and convenient transfer operation. In the process of realizing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] At present, workers mainly push the prefabricated columns manually to eliminate the offset error, which results in low construction quality and efficiency. Especially during the hoisting process, the lifting and lowering of the prefabricated columns, as well as the shaking of the prefabricated columns in the air, will produce a certain inertia, which will increase the risk of the prefabricated columns falling. After each hoisting is completed, the hook needs to be manually disassembled and reinstalled in preparation for the next hoisting, which increases the operation time and labor intensity and reduces work efficiency. Frequent manual disassembly and assembly can easily lead to wear of the hook, affecting the service life and safety of the equipment. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems of the prior art that a hook needs to be manually disassembled. To this end, the present application proposes a prefabricated column hoisting and positioning device.

[0006] To achieve the above object, the specific technical solution of the present invention is as follows: a prefabricated column hoisting and positioning device, comprising a prefabricated column, the top of which is fixedly connected to two U-shaped hanging points, the bottom of which is provided with a reserved hole, the bottom of which is provided with a cement boss, the top of which is fixedly connected to a pre-buried steel bar, and further comprising:

[0007] The hoisting mechanism comprises a positioning and limiting plate arranged on the top of the prefabricated column, the top of the positioning and limiting plate is fixedly connected to a connecting frame, the side wall of the connecting frame is fixedly connected to an I-shaped support plate, the top of the I-shaped support plate is fixedly connected to a limited sliding column, the outer wall of the limited sliding column is slidably connected to a placing and pressing frame, the inner wall of the placing and pressing frame is fixedly connected to an annular slide, the outer wall of the annular slide is slidably connected to a rotating slider, and the top of the rotating slider is fixedly connected to a lifting chain;

[0008] The clamping mechanism comprises a connecting seat fixedly connected to the bottom of the I-shaped support plate, the side wall of the connecting seat is rotatably connected to an axle pin, and the outer wall of the axle pin is rotatably connected to a hook.

[0009] Preferably, the clamping mechanism also includes a return spring fixedly connected to the outer surface of the hook, and the end of the return spring away from the hook is fixedly connected to the bottom of the I-shaped support plate, the side wall of the hook is fixedly connected to a connecting rod, the outer wall of the connecting rod is rotatably connected to a limiting push plate, and the end of the limiting push plate away from the connecting rod is rotatably connected to a push-pull member.

[0010] Preferably, a reset mechanism is provided on the outer wall of the push-pull member, and the reset mechanism comprises a reset rod fixedly connected to the outer wall of the push-pull member, and the reset rod passes through the bottom of the I-shaped support plate and extends to the outside.

[0011] Preferably, the top of the reset rod is fixedly connected to a lifting triangle block, the top of the I-shaped support plate is fixedly connected to a fixing frame, and a limiting sliding rod is slidably connected to a through hole on the side wall of the fixing frame.

[0012] Preferably, one end of the limiting slide rod is fixedly connected to a circular plate, the outer surface of the circular plate is fixedly connected to a connecting spring, the end of the connecting spring away from the circular plate is fixedly connected to the side wall of the fixed frame, the other end of the limiting slide rod is fixedly connected to a limiting triangle block, and the outer surface of the circular plate is fixedly connected to an axis rod.

[0013] Preferably, a lower pressing plate is fixedly connected to the bottom of the lower pressing frame, and a side wall of the lower pressing plate is arranged in contact with an outer wall of the shaft rod.

[0014] Preferably, a positioning mechanism is provided on the outer side of the prefabricated column, and the positioning mechanism comprises a fixing plate provided on the outer side of the prefabricated column, a guide rail is fixedly connected to the top of the fixing plate, and an I-shaped sliding block is slidably connected to the inner wall of the guide rail.

[0015] Preferably, a positioning movable plate is fixedly connected to the top of the I-shaped sliding block, a positioning bracket is fixedly connected to the top of the positioning movable plate, and a guide plate is fixedly connected to the side of the positioning bracket close to the prefabricated column.

[0016] Preferably, the top of the guide rail is fixedly connected to a cleaning box, the side wall of the cleaning box is fixedly connected to a connecting shaft seat, the side wall of the connecting shaft seat is fixedly connected to a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected to a connecting head, and the side wall of the connecting head is rotatably connected to a hinged seat.

[0017] Preferably, the side wall of the hinged seat is fixedly connected with a rotating plate, the top of the rotating plate is provided with a guiding inclined groove, the inner wall of the guiding inclined groove is slidably connected with a guiding slide rod, and the top of the guiding slide rod is fixedly connected with the bottom of the positioning movable plate.

[0018] A prefabricated column hoisting and positioning device of the present invention:

[0019] The prefabricated column hoisting positioning device, the staff first installs the positioning limit plate on the prefabricated column, and clamps the uncombined hook in the U-shaped lifting point, the staff squeezes the connecting rod inward, the connecting rod pushes the limit push plate to move, the limit push plate drives the push-pull member, the reset rod and the lifting triangle block to rise, the lifting triangle block squeezes the inclined surface of the limit triangle block during the rising process, when the lifting triangle block continues to move upward, the bottom surface of the lifting triangle block contacts the straight surface of the limit triangle block, so that the limit triangle block limits the movement of the lifting triangle block, and the hook at this time will be stuck in the U-shaped lifting point, reducing the risk of falling of the prefabricated column due to shaking and other reasons during the movement, and improving the safety of the prefabricated column during the lifting process.

[0020] The prefabricated column lifting and positioning device, after installation, the crane drives the lifting chain to descend, and the lifting chain falls into the placing and pressing frame. When the weight of the placing and pressing frame reaches a certain level, the placing and pressing frame drives the pressing plate to squeeze the shaft rod. The squeezed shaft rod moves outward along the inclined surface of the pressing plate, and the shaft rod drives the limiting sliding rod and the limiting triangle block to separate from the lifting triangle block. After the limiting triangle block releases the restriction on the lifting triangle block, the reset spring drives the hook to reset, and the hook expands to the outside of the U-shaped lifting point and separates from the U-shaped lifting point. The crane drives the lifting mechanism, the clamping mechanism and the reset mechanism to rise and separate from the prefabricated column. No manual disassembly is required, which is convenient for the next clamping. The operation is simple and can be used repeatedly to improve work efficiency.

[0021] The prefabricated column hoisting and positioning device, before installation, the staff uses an infrared electronic level to install the positioning mechanism around the cement boss, and installs the fixed plate on the ground through expansion bolts. After the installation is completed, the hydraulic cylinder pulls the connecting head and the hinged seat to move, and the connecting head drives the rotating plate to rotate. During the rotation process, the guide bevel guides the guide slide bar, so that the guide slide bar moves along the guide bevel guide, and the guide slide bar drives the positioning moving plate and the guide plate to approach the cement boss. The size of the area surrounded by the guide plate is adjustable, with a certain degree of flexibility, and can adapt to prefabricated columns of different sizes. When the prefabricated column is lowered, the guide plate positions it, which can reduce the labor of cooperating personnel on the hoisting site. At the same time, the inclined surface of the guide plate guides the prefabricated column to prevent it from deflecting during the hoisting process. The device can make the hoisting and lowering more stable, thereby improving the installation efficiency of the prefabricated column hoisting.

[0022] The prefabricated column hoisting positioning device has a method of pulling the L-shaped moving rod and the extrusion plate to move when the positioning moving plate moves toward the cement boss. The extrusion plate squeezes the gas in the cleaning box. The extruded gas is discharged into the exhaust box through the exhaust pipe and discharged toward the cement boss through the injection port, so as to clean the cement boss and prevent small stones on the cement boss from affecting the displacement of the prefabricated column after it is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the reserved hole structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the top structure of the prefabricated column of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the hoisting mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0029] Figure 6 For the present invention Figure 5 A magnified view of the structure at center;

[0030] Figure 7It is an exploded view of the positioning mechanism structure of the present invention;

[0031] Figure 8 It is a schematic diagram of the guide plate structure of the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the positioning movable plate of the present invention;

[0033] Fig.10 It is a schematic diagram of the structure of the rotating plate of the present invention;

[0034] Fig.11 It is a cross-sectional view of the cleaning mechanism structure of the present invention.

[0035] Explanation of the markings in the figure: 101, prefabricated column; 102, U-shaped hanging point; 103, reserved hole; 104, cement boss; 105, embedded steel bar; 2, lifting mechanism; 201, positioning limit plate; 202, connecting frame; 203, I-shaped support plate; 204, limit sliding column; 205, placing down-pressing frame; 206, annular slide; 207, rotating slide block; 208, lifting chain; 3, clamping mechanism; 301, connecting seat; 302, shaft pin; 303, hook; 304, reset spring; 305, connecting rod; 306, limit push plate; 307, push-pull member; 4, reset mechanism; 401, reset rod; 402, lifting triangle block; 403, fixing frame; 404, limit slide bar; 405, circular plate; 406, connecting spring; 407, limit triangle block; 408, shaft rod; 409, lower pressure plate; 5, positioning mechanism; 501, fixed plate; 502, guide rail; 503, I-shaped slide block; 504, positioning movable plate; 505, positioning bracket; 506, guide plate; 51, cleaning box; 52, connecting shaft seat; 53, hydraulic cylinder; 54, connecting head; 55, hinged seat; 56, rotating plate; 57, guide inclined groove; 58, guide slide bar; 6, cleaning mechanism; 601, L-shaped movable rod; 602, extrusion plate; 603, one-way valve; 604, exhaust pipe; 605, exhaust box; 606, injection port. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 6As shown, a prefabricated column hoisting and positioning device of the present invention comprises a prefabricated column 101, the top of the prefabricated column 101 is fixedly connected with two U-shaped hanging points 102, the bottom of the prefabricated column 101 is provided with a reserved hole 103, the bottom of the prefabricated column 101 is provided with a cement boss 104, the top of the cement boss 104 is fixedly connected with an embedded steel bar 105, the prefabricated column 101 needs to be moved to the embedded steel bar 105, the prefabricated column 101 is connected with 12 embedded steel bars 105 embedded in the foundation through 12 reserved holes 103 at the bottom, and also includes:

[0038] The hoisting mechanism 2 comprises a positioning and limiting plate 201 arranged on the top of the prefabricated column 101, the top of the positioning and limiting plate 201 is fixedly connected with a connecting frame 202, the side wall of the connecting frame 202 is fixedly connected with an I-shaped support plate 203, the top of the I-shaped support plate 203 is fixedly connected with a limited sliding column 204, the outer wall of the limited sliding column 204 is slidably connected with a placing and pressing frame 205, the inner wall of the placing and pressing frame 205 is fixedly connected with an annular slide 206, the outer wall of the annular slide 206 is slidably connected with a rotating slider 207, such an arrangement is convenient for the rotating slider 207 to slide on the annular slide 206, and its position can be adjusted by the staff rotating the bottom of the prefabricated column 101, and the top of the rotating slider 207 is fixedly connected with a lifting chain 208;

[0039] The clamping mechanism 3 includes a connecting seat 301 fixedly connected to the bottom of the I-shaped support plate 203, a shaft pin 302 is rotatably connected to the side wall of the connecting seat 301, and a hook 303 is rotatably connected to the outer wall of the shaft pin 302. The clamping mechanism 3 also includes a reset spring 304 fixedly connected to the outer surface of the hook 303, and one end of the reset spring 304 away from the hook 303 is fixedly connected to the bottom of the I-shaped support plate 203. This arrangement is convenient for the reset spring 304 to drive the hook 303 to reset. The hook 303 is expanded toward the outside of the U-shaped hanging point 102 and detached from the U-shaped hanging point 102. The side wall of the hook 303 is fixedly connected to the connecting rod 305. The outer wall of the connecting rod 305 is rotatably connected to the limiting push plate 306. The end of the limiting push plate 306 away from the connecting rod 305 is rotatably connected to the push-pull member 307. This arrangement is for the staff to squeeze the connecting rod 305 inward, the connecting rod 305 pushes the limiting push plate 306 to move, and the limiting push plate 306 drives the push-pull member 307 to move.

[0040] The outer wall of the push-pull member 307 is provided with a reset mechanism 4, which includes a reset rod 401 fixedly connected to the outer wall of the push-pull member 307, the reset rod 401 passes through the bottom of the I-shaped support plate 203 and extends to the outside, the top of the reset rod 401 is fixedly connected to a lifting triangle block 402, the top of the I-shaped support plate 203 is fixedly connected to a fixing frame 403, and the side wall through hole of the fixing frame 403 is slidably connected to a limiting slide rod 404, one end of the limiting slide rod 404 is fixedly connected to a circular plate 405, and the outer surface of the circular plate 405 is fixedly connected to a connecting spring 406, and the end of the connecting spring 406 away from the circular plate 405 is fixedly connected to the side wall of the fixing frame 403, and the other end of the limiting slide rod 404 is fixedly connected to the limiting triangle block 407. 5 is fixedly connected with an axle rod 408 on its outer surface, and a lower pressing plate 409 is fixedly connected with the bottom of the lower pressing frame 205, and the side wall of the lower pressing plate 409 is arranged in contact with the outer wall of the axle rod 408. This arrangement is for when the weight of the lower pressing frame 205 reaches a certain level, the lower pressing frame 205 drives the lower pressing plate 409 to squeeze the axle rod 408, and the axle rod 408 after squeezing moves outward along the inclined surface of the lower pressing plate 409, and the axle rod 408 drives the limiting slide bar 404 and the limiting triangle block 407 to separate from the lifting triangle block 402. After the limiting triangle block 407 releases the restriction on the lifting triangle block 402, the reset spring 304 drives the hook 303 to reset, and the hook 303 expands to the outside of the U-shaped hanging point 102 and separates from the U-shaped hanging point 102.

[0041] like Figures 7 to 10 As shown, a positioning mechanism 5 is provided on the outer side of the prefabricated column 101, and the positioning mechanism 5 includes a fixed plate 501 arranged on the outer side of the prefabricated column 101, and the fixed plate 501 is installed on the ground by expansion bolts, and the top of the fixed plate 501 is fixedly connected with a guide rail 502, and the inner wall of the guide rail 502 is slidably connected with an I-shaped slider 503, so that the I-shaped slider 503 can move in the guide rail 502, and the top of the I-shaped slider 503 is fixedly connected with a positioning movable plate 504, and the top of the positioning movable plate 504 is fixedly connected with a positioning bracket 505, and the positioning bracket 505 is fixedly connected with a guide plate 506 on the side close to the prefabricated column 101.

[0042] The top of the guide rail 502 is fixedly connected with a cleaning box 51, and the side wall of the cleaning box 51 is fixedly connected with a connecting shaft seat 52, and the side wall of the connecting shaft seat 52 is fixedly connected with a hydraulic cylinder 53, and the output end of the hydraulic cylinder 53 is fixedly connected with a connecting head 54, and the side wall of the connecting head 54 is rotatably connected with an articulated seat 55, and the side wall of the articulated seat 55 is fixedly connected with a rotating plate 56, and a guide inclined groove 57 is provided on the top of the rotating plate 56, and a guide slide bar 58 is slidably connected to the inner wall of the guide inclined groove 57, and the top of the guide slide bar 58 is fixedly connected to the bottom of the positioning movable plate 504. This arrangement is to enable the hydraulic cylinder 53 to pull the connecting head 54 and the articulated seat 55 to move, and the connecting head 54 drives the rotating plate 56 to rotate. During the rotation process, the guide inclined groove 57 guides the guide slide bar 58, so that the guide slide bar 58 moves along the guide inclined groove 57, and the guide slide bar 58 drives the positioning movable plate 504 and the guide plate 506 to approach the cement boss 104.

[0043] like Fig.11 As shown, before the prefabricated columns are lowered, small stones, debris or other uneven objects on the foundation surface can easily affect the positioning accuracy of the columns, causing the columns to deviate after being lowered, affecting the installation quality and subsequent construction. A cleaning mechanism 6 is provided on the top of the positioning movable plate 504. The cleaning mechanism 6 includes an L-shaped movable rod 601 fixedly connected to the top of the positioning movable plate 504. The top of the L-shaped movable rod 601 is fixedly connected to an extrusion plate 602. The side wall of the extrusion plate 602 is slidably connected to the inner wall of the cleaning box 51. A one-way valve 603 is provided on the top of the cleaning box 51. An exhaust pipe 604 is connected to one side of the cleaning box 51. The end of the exhaust pipe 604 away from the cleaning box 51 is fixedly connected to Exhaust box 605, the bottom of exhaust box 605 is fixedly connected to the top of positioning movable plate 504, and the side wall of exhaust box 605 is fixedly connected with injection port 606. Such arrangement is for when positioning movable plate 504 moves toward cement boss 104, positioning movable plate 504 pulls L-shaped movable rod 601 and extrusion plate 602 to move, and extrusion plate 602 squeezes the gas in cleaning box 51, and the squeezed gas is discharged into exhaust box 605 through exhaust pipe 604, and is discharged toward cement boss 104 through injection port 606, so as to clean cement boss 104 and prevent small stones on cement boss 104 from affecting the displacement of prefabricated column 101 after lowering.

[0044] The working principle of a prefabricated column hoisting and positioning device: when in use, the staff first installs the positioning limit plate 201 on the prefabricated column 101, and clamps the uncombined hook 303 in the U-shaped hanging point 102, and the staff squeezes the connecting rod 305 inward, and the connecting rod 305 pushes the limit push plate 306 to move, and the limit push plate 306 drives the push-pull member 307, the reset rod 401 and the lifting triangle block 402 to rise, and the lifting triangle block 402 squeezes the inclined surface of the limit triangle block 407 during the rising process. When the lifting triangle block 402 continues to move upward, the bottom surface of the lifting triangle block 402 and the straight line of the limit triangle block 407 The lifting mechanism 101 is in contact with the surface, so that the limiting triangle block 407 limits the movement of the lifting triangle block 402. At this time, the hook 303 will be stuck in the U-shaped lifting point 102, reducing the risk of the precast column 101 falling due to shaking and other reasons during the movement, and improving the safety of the precast column 101 during the lifting process. During the lifting process, the crane pulls the lifting mechanism 2 and the clamping mechanism 3 through the lifting chain 208 to move, and the clamping mechanism 3 drives the precast column 101 to rise. The crane moves the precast column 101 to the embedded steel bars 105, and the precast column 101 is connected to the 12 embedded steel bars 105 embedded in the foundation through the 12 reserved holes 103 at the bottom;

[0045] Before installation, the staff uses an infrared electronic level to install the positioning mechanism 5 around the cement boss 104, so that the center line of the prefabricated column 101 is aligned with the axis position set on the foundation, and the positioning process is completed. During the positioning process, it is also necessary to install the prefabricated column 101 according to the actual slope and the direction of the beam and plate, so as to avoid mistakes that affect the construction progress. The fixed plate 501 is installed on the ground with expansion bolts. After the installation is completed, the hydraulic cylinder 53 pulls the connecting head 54 and the articulated seat 55 to move, and the connecting head 54 drives the rotating plate 56 to rotate. During the rotation process, the guide inclined groove 57 The rod 58 is guided, so that the guide slide bar 58 moves along the guide inclined groove 57, and the guide slide bar 58 drives the positioning movable plate 504 and the guide plate 506 to approach the cement boss 104. The size of the area surrounded by the guide plate 506 is adjustable, which has a certain flexibility and can adapt to prefabricated columns 101 of different sizes. When the prefabricated column 101 is lowered, the guide plate 506 positions it, which can reduce the labor of the cooperating personnel on the hoisting site. At the same time, the inclined surface of the guide plate 506 guides the prefabricated column 101 to prevent it from deflecting during the hoisting process. The device makes the hoisting and lowering more stable, and improves the installation efficiency of the prefabricated column hoisting;

[0046] In order to reduce the elevation error of the prefabricated column 101, a 25mm leveling layer is set above the cement boss 104, which is adjusted with a steel gasket, and an infrared electronic level is used to coordinate the adjustment to ensure the elevation and flatness of the top surface of the prefabricated column 101. When the positioning movable plate 504 moves toward the cement boss 104, the positioning movable plate 504 pulls the L-shaped moving rod 601 and the extrusion plate 602 to move, and the extrusion plate 602 squeezes the gas in the cleaning box 51. The extruded gas is discharged into the exhaust box 605 through the exhaust pipe 604 and discharged toward the cement boss 104 through the injection port 606, so as to clean the cement boss 104 and prevent small stones on the cement boss 104 from affecting the displacement of the prefabricated column 101 after it is lowered.

[0047] After the installation is completed, the crane drives the lifting chain 208 to descend, and the lifting chain 208 falls into the placing lower pressing frame 205. When the weight of the placing lower pressing frame 205 reaches a certain level, the placing lower pressing frame 205 drives the lower pressing plate 409 to squeeze the shaft rod 408. The squeezed shaft rod 408 moves outward along the inclined surface of the lower pressing plate 409, and the shaft rod 408 drives the limiting slide bar 404 and the limiting triangle block 407 to separate from the lifting triangle block 402. After the limiting triangle block 407 releases the restriction on the lifting triangle block 402, the reset spring 304 drives the hook 303 to reset, and the hook 303 expands to the outside of the U-shaped hanging point 102 and separates from the U-shaped hanging point 102. The crane drives the lifting mechanism 2, the clamping mechanism 3 and the reset mechanism 4 to rise and separate from the prefabricated column 101, without manual disassembly, which is convenient for the next clamping, easy to operate, can be used repeatedly, and improves work efficiency;

[0048] After the precast column 101 is positioned and corrected for verticality, two diagonal braces are installed on both sides of the column for temporary reinforcement (installed by a aerial platform) to ensure that the precast column 101 does not move before and during grouting.

[0049] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention.

Claims

1. A prefabricated column hoisting and positioning device, comprising a prefabricated column, the top of which is fixedly connected to two U-shaped hanging points, the bottom of which is provided with a reserved hole, the bottom of which is provided with a cement boss, the top of which is fixedly connected to a pre-buried steel bar, characterized in that: Also includes: The lifting mechanism comprises an I-shaped support plate, the top of the I-shaped support plate is fixedly connected with a limited sliding column, the outer wall of the limited sliding column is slidably connected with a placing and pressing frame, and the top of the placing and pressing frame is provided with a lifting chain; The clamping mechanism includes a connecting seat fixedly connected to the bottom of the I-shaped support plate, a side wall of the connecting seat is rotatably connected to an axle pin, and an outer wall of the axle pin is rotatably connected to a hook; The clamping mechanism also includes a return spring fixedly connected to the outer surface of the hook, one end of the return spring away from the hook is fixedly connected to the bottom of the I-shaped support plate, the side wall of the hook is fixedly connected to a connecting rod, the outer wall of the connecting rod is rotatably connected to a limited push plate, and one end of the limited push plate away from the connecting rod is rotatably connected to a push-pull member; The outer wall of the push-pull member is provided with a reset mechanism, which includes a reset rod fixedly connected to the outer wall of the push-pull member, and the reset rod passes through the bottom of the I-shaped support plate and extends to the outside; The top of the reset rod is fixedly connected with a lifting triangle block, the top of the I-shaped support plate is fixedly connected with a fixing frame, and the side wall through hole of the fixing frame is slidably connected with a limited sliding rod; One end of the limiting slide rod is fixedly connected to a circular plate, the outer surface of the circular plate is fixedly connected to a connecting spring, the end of the connecting spring away from the circular plate is fixedly connected to the side wall of the fixing frame, the other end of the limiting slide rod is fixedly connected to the limiting triangular block, and the outer surface of the circular plate is fixedly connected to a shaft rod; A lower pressing plate is fixedly connected to the bottom of the lower pressing frame, and a side wall of the lower pressing plate is arranged in contact with the outer wall of the shaft rod.

2. The prefabricated column hoisting and positioning device according to claim 1 is characterized in that: The lifting mechanism also includes a positioning and limiting plate arranged on the top of the prefabricated column, the top of the positioning and limiting plate is fixedly connected to a connecting frame, the side wall of the connecting frame is fixedly connected to an I-shaped support plate, the inner wall of the lower pressure frame is fixedly connected to an annular slide, the outer wall of the annular slide is slidably connected to a rotating slider, the top of the rotating slider is fixedly connected to a lifting chain, a positioning mechanism is arranged on the outside of the prefabricated column, the positioning mechanism includes a fixed plate arranged on the outside of the prefabricated column, the top of the fixed plate is fixedly connected to a guide rail, and the inner wall of the guide rail is slidably connected to the I-shaped slider.

3. The prefabricated column hoisting and positioning device according to claim 2 is characterized in that: The top of the I-shaped sliding block is fixedly connected with a positioning movable plate, the top of the positioning movable plate is fixedly connected with a positioning bracket, and the side of the positioning bracket close to the prefabricated column is fixedly connected with a guide plate.

4. The prefabricated column hoisting and positioning device according to claim 3 is characterized in that: The top of the guide rail is fixedly connected with a cleaning box, the side wall of the cleaning box is fixedly connected with a connecting shaft seat, the side wall of the connecting shaft seat is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a connecting head, and the side wall of the connecting head is rotatably connected with a hinged seat.

5. The prefabricated column hoisting and positioning device according to claim 4 is characterized in that: The side wall of the hinged seat is fixedly connected with a rotating plate, the top of the rotating plate is provided with a guiding inclined groove, the inner wall of the guiding inclined groove is slidably connected with a guiding slide bar, and the top end of the guiding slide bar is fixedly connected with the bottom of the positioning movable plate.

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