Continuous beam cast-in-place section support auxiliary installation device and method

Abstract

The invention relates to the technical field of bridge construction auxiliary tools, and provides a continuous beam cast-in-place section support auxiliary installation device and method.The continuous beam cast-in-place section support auxiliary installation device comprises an annular positioning frame, the annular positioning frame is composed of two semicircular positioning frames, and the two semicircular positioning frames are detachably connected through locking bolts; the annular positioning frame is fixedly installed at the top end of the steel pipe short column, an annular cavity is formed in the annular positioning frame, and an annular inner gear is arranged in the annular cavity. Through the arrangement of the detachable annular positioning frame, when the steel pipe short columns in the cast-in-place section support are spliced, rapid positioning between the two steel pipe short columns can be facilitated, manual righting is not needed, auxiliary installation is facilitated, the installation efficiency is greatly improved, meanwhile, the safety of high-altitude butt joint operation of operators is improved, and the labor intensity of the operators is lowered. The device is divided into two parts which are fixed on the steel pipe short column, and the annular positioning frame can be quickly disassembled after the bracket is mounted, so that the subsequent repeated use is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction auxiliary tools, and in particular to a continuous beam cast-in-situ section bracket auxiliary installation device and method. Background Art

[0002] With the continuous improvement of bridge construction technology, the installation of continuous beams has become the norm in large structures such as those crossing rivers and railways. The issue of safe, green and environmentally friendly construction of bridge projects has also led many scholars to think about the application and exploration of improved bridge construction technology.

[0003] The cast-in-place side spans of continuous beams are typically constructed using full-span scaffolding, scaffolding, and bracketing methods. This technology is mature, safe, and reliable. However, in the high-speed railway construction environment, facilitating transportation, installation, recycling, and reducing costs and increasing efficiency have become challenges. Using traditional steel pipe column brackets for welding poses a risk of weld burns on the column cross-section, impacting structural stress and resulting in poor recycling rates. High-altitude welding poses significant safety risks, making it difficult to meet design requirements for welding quality and precision, which can easily cause column tilt. Construction is also time-consuming, and the high-altitude cutting required for on-site installation and welding of transverse connecting members is inefficient during removal.

[0004] The patent with application number CN221798127U proposes an assembled continuous beam side span cast-in-place section support structure, which includes an I-beam distribution beam, and a plurality of I-beam longitudinal beams are arranged longitudinally below the I-beam distribution beam. A steel guardrail is installed on the top of the I-beam distribution beam and a wooden formwork is erected. The wooden formwork is used to cast the side span cast-in-place section beam body, and a steel pipe column is connected to the bottom of the I-beam longitudinal beam. A positioning mechanism is provided on one end of the I-beam distribution beam extending above the bridge pier, and a transverse parallel connection structure is provided between two adjacent steel pipe columns. In this application, there is no need to weld the steel pipe columns, which avoids damage to the steel pipe columns, and the steel pipe columns and steel clamps are turnover materials and can be used in a turnover manner. In addition, the steel clamps can be installed on the steel pipe short columns first, and then the steel pipe short columns are assembled. The clamps are installed on the ground, which reduces the number of workers' high-altitude operations and is safer.

[0005] However, when the short steel pipe columns are butt-jointed and installed, since the steel pipe columns are hoisted by a car crane, it is difficult to accurately control the installation position of the two sections of steel pipe columns when they are butt-jointed, and there is no corresponding centering device. Manual straightening is usually required. Since the steel pipe piles are long and heavy, a huge amount of manpower is required, and manual high-altitude butt-jointing poses a great safety hazard. Therefore, a continuous beam cast-in-place section bracket auxiliary installation device and method are proposed to solve the above problems. Summary of the Invention

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an auxiliary installation device for a cast-in-situ section support of a continuous beam, comprising an annular positioning frame, the annular positioning frame consisting of two semicircular positioning frames, the two semicircular positioning frames being detachably connected by a locking bolt, the annular positioning frame being fixedly mounted on the top of a steel pipe short column; An annular cavity is provided inside the annular positioning frame, an annular internal gear is provided inside the annular cavity, and the annular internal gear is meshedly connected with at least four pinions, and each of the semicircular positioning frames is divided into two pinions, one side of the pinion is meshedly connected with a movable rack, a steel pipe positioning rod is installed on the upper surface of the movable rack, and a cylinder is provided below any one of the movable racks, and the cylinder is fixed to the lower surface of the annular positioning frame, and the telescopic end of the cylinder is fixedly connected to the movable rack through a connecting plate. When the cylinder is fully retracted, the steel pipe positioning rod is connected to the outer surface of the steel pipe short column to achieve positioning; The annular internal gear includes a first semicircular internal gear and a second semicircular internal gear. Both ends of the first semicircular internal gear are connected with a clamping assembly, and both ends of the second semicircular internal gear are provided with slots matching the clamping assembly.

[0007] Preferably, an annular slide is fixed to the inner wall of the annular cavity, an annular slide groove matching the annular slide is formed on the outer surface of the annular internal gear, and the annular slide is slidably connected to the annular slide groove.

[0008] Preferably, a support groove is fixed on the outer surface of the annular positioning frame, the movable rack is located inside the support groove, a support rod is fixed on the inner wall of the support groove, and the movable rack is slidably sleeved on the outer surface of the support rod.

[0009] Preferably, the steel pipe positioning rod includes a vertical rod fixed on the upper surface of the movable rack, a horizontal rod is fixed to the top of the vertical rod, a positioning pulley is installed at one end of the horizontal rod, and a strip-shaped opening is opened on the upper surface of the annular positioning frame to facilitate the movement of the steel pipe positioning rod inside the strip-shaped opening.

[0010] Preferably, the snap-on assembly includes a connecting block fixed at the first semicircular inner gear port, an outer surface of the connecting block is provided with an opening, a spring is fixed inside the opening, a clamping block is fixed at one end of the spring, a clamping hole is provided on the slotted surface, and the clamping hole is engaged with the clamping block.

[0011] Preferably, a retractable positioning bead is embedded in the side wall of the movable rack, and a first positioning groove and a second positioning groove matching the positioning bead are opened on the inner wall of the supporting groove.

[0012] Preferably, when the positioning bead is engaged with the first positioning groove, the steel pipe positioning rod is connected to the steel pipe short column, and when the positioning bead is engaged with the second positioning groove, the cylinder is extended to the maximum stroke, and at the same time, the docking point of the first semicircular internal gear and the second semicircular internal gear and the docking point of the two semicircular positioning frames are located on the same straight line.

[0013] A method for installing a continuous beam cast-in-place section support includes the following specific steps: S1. Fix the surface of the steel pipe short column with a clamp in advance, and fix the top of the steel pipe short column with a ring positioning frame; S2. The operator first connects the first section of the steel pipe short column to the pre-buried steel pipe pile foundation on the ground, and then uses a truck crane to lift the steel pipe short column to be spliced ​​to the top of the first section of the steel pipe short column; S3. When the hoist is about to contact the first section of the steel pipe short column, start the cylinder to fully retract the telescopic end of the cylinder. At this time, the four steel pipe positioning rods move simultaneously to contact and position the steel pipe short column, so that the hoisted steel pipe short column and the first section of the steel pipe short column are neatly connected and connected by bolts.

[0014] S4. Splice in the same manner as S3.

[0015] The present invention provides a device and method for auxiliary installation of supports for cast-in-situ sections of continuous beams. It has the following beneficial effects: The present invention provides a detachable annular positioning frame, which can facilitate rapid positioning between the two steel pipe short columns when splicing the steel pipe short columns in the cast-in-place section bracket, without the need for manual straightening, and facilitates auxiliary installation, greatly improving the installation efficiency and the safety of the operator's high-altitude docking operation. The device is divided into two parts and fixed on the steel pipe short columns. After the bracket is installed, the annular positioning frame can be quickly disassembled to facilitate subsequent reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an overall three-dimensional diagram of an auxiliary installation device for a cast-in-situ section bracket of a continuous beam according to the present invention; Figure 2 This is a diagram of a first use state of a continuous beam cast-in-situ section bracket auxiliary installation device according to the present invention; Figure 3 This is a diagram of a second use state of a continuous beam cast-in-situ section bracket auxiliary installation device according to the present invention; Figure 4 This is a diagram showing the internal structure of a continuous beam cast-in-situ section bracket auxiliary installation device according to the present invention; Figure 5 This is a partial top-sectional view of a continuous beam cast-in-situ section support auxiliary installation device according to the present invention; Figure 6This is an overall structural diagram of the annular internal gear in an auxiliary installation device for a cast-in-situ continuous beam section support according to the present invention; Figure 7 The invention provides a continuous beam cast-in-situ section bracket auxiliary installation device Figure 6 Enlarged view of point A in the middle; Figure 8 This is an exploded view of the moving gear and support groove in the auxiliary installation device of the continuous beam cast-in-situ section bracket of the present invention.

[0017] Among them, 1. annular positioning frame; 11. semicircular positioning frame; 110. locking bolt; 111. annular cavity; 112. annular internal gear; 1121. first semicircular internal gear; 1121-1. connecting block; 1121-2. spring; 1121-3. clamping block; 1122. second semicircular internal gear; 1123. annular slide; 113. pinion; 114. movable rack; 1141. positioning card bead; 1141. positioning card bead; 115. steel pipe positioning rod; 1151. vertical rod; 1152. horizontal rod; 1153. positioning pulley; 116. connecting plate; 117. annular slide; 118. support groove; 119. support rod; 1110. cylinder. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0019] Example 1: like Figures 1-8As shown, an embodiment of the present invention provides an auxiliary installation device for a continuous beam cast-in-situ section bracket, including an annular positioning frame 1, the annular positioning frame 1 is composed of two semicircular positioning frames 11, the two semicircular positioning frames 11 are detachably connected by a locking bolt 110, and the annular positioning frame 1 is fixedly installed on the top of the steel pipe short column; an annular cavity 111 is provided inside the annular positioning frame 1, and an annular internal gear 112 is provided inside the annular cavity 111, and the annular internal gear 112 is meshedly connected with at least four small gears 113, and each semicircular positioning frame 11 is divided into two small gears 113, and one side of the small gear 113 is meshedly connected with a moving rack 114, and the upper end of the moving rack 114 is meshed with the lower end of the small gear 113. A steel pipe positioning rod 115 is installed on the surface, and a cylinder 1110 is provided under any movable rack 114. The cylinder 1110 is fixed to the lower surface of the annular positioning frame 1, and the telescopic end of the cylinder 1110 is fixedly connected to the movable rack 114 through the connecting plate 116. When the cylinder 1110 is fully retracted, the steel pipe positioning rod 115 contacts the outer surface of the steel pipe short column to achieve positioning; the annular internal gear 112 includes a first semicircular internal gear 1121 and a second semicircular internal gear 1122. Both ends of the first semicircular internal gear 1121 are connected to a clamping assembly, and both ends of the second semicircular internal gear 1122 are provided with a slot 1122-1 that matches the clamping assembly.

[0020] An annular slide 117 is fixed to the inner wall of the annular cavity 111, and an annular groove 1123 matching the annular slide 117 is provided on the outer surface of the annular internal gear 112. The annular slide 117 is slidably connected to the annular groove 1123, which can improve the stability of the rotation of the annular internal gear 112 inside the annular cavity 111.

[0021] A support groove 118 is fixed to the outer surface of the annular positioning frame 1. The movable rack 114 is located inside the support groove 118. A support rod 119 is fixed to the inner wall of the support groove 118. The movable rack 114 is slidably sleeved on the outer surface of the support rod 119, allowing the movable rack 114 to move on the surface of the support rod 119. The steel pipe positioning rod 115 includes a vertical rod 1151 fixed to the upper surface of the movable rack 114. A horizontal rod 1152 is fixed to the top of the vertical rod 1151. A positioning pulley 1153 is installed at one end of the horizontal rod 1152. A strip-shaped opening is opened on the upper surface of the annular positioning frame 1 to facilitate the movement of the steel pipe positioning rod 115 inside the strip-shaped opening.

[0022] The clamping assembly includes a connecting block 1121-1 fixed at the port of the first semicircular internal gear 1121. The outer surface of the connecting block 1121-1 is provided with an opening, and a spring 1121-2 is fixed inside the opening. A clamping block 1121-3 is fixed to one end of the spring 1121-2. A clamping hole 1122-2 is provided on the surface of the slot 1122-1, and the clamping hole 1122-2 is engaged with the clamping block 1121-3 for easy installation.

[0023] The side wall of the movable rack 114 is embedded with a retractable positioning bead 1141, and the inner wall of the support groove 118 is provided with a first positioning groove and a second positioning groove matching the positioning bead 1141. When the positioning bead 1141 is engaged with the first positioning groove, the steel pipe positioning rod 115 contacts the steel pipe short column. When the positioning bead 1141 is engaged with the second positioning groove, the cylinder 1110 extends to the maximum stroke. At the same time, the docking point of the first semicircular internal gear 1121 and the second semicircular internal gear 1122 is located on the same straight line as the docking point of the two semicircular positioning frames 11, which facilitates disassembly between the first semicircular internal gear 1121 and the second semicircular internal gear 1122.

[0024] Working principle: First, fix the annular fixing frame 1 on the unmounted steel pipe short column. Specifically, when it is not in use, the positioning beads 1141 on the movable rack 114 are engaged with the second positioning groove. At this time, the joint of the first semicircular internal gear 1121 and the second semicircular internal gear 1122 are located on the same straight line as the joints of the two semicircular positioning frames 11 (such as Figure 5-Figure 6 ), at this time, the two semicircular positioning frames 11 are docked on the steel pipe short column, first press the clamping block 1121-3 to insert the connecting block 1121-1 into the slot 1122-1, and make the clamping block 1121-3 pop out from the clamping hole 1122-2, and the first semicircular internal gear 1121 and the second semicircular internal gear 1122 can be connected together, and then the two semicircular positioning frames 11 are fixed by the locking bolt 110, so that the device is stably fixed on the steel pipe short column. When positioning is required, the cylinder 1110 is started, and the positioning clamping bead 1141 is separated from the second positioning groove under the action of external force, driving the movable rack 114 connected thereto to move, and the movable rack 114 drives the movable rack 114 to move when moving. The small gear 113 connected to it rotates, and the small gear 113 drives the annular tube inner gear 112 to rotate, so that the other small gears 113 drive the other movable racks 114 to move, so that the steel pipe positioning rods 115 on the surfaces of the four movable racks 114 move at the same time to achieve the centering positioning of the steel pipe short column. After the overall installation of the bracket is completed, the device is disassembled. First, the cylinder 1110 is extended to the maximum stroke, and the positioning card bead 1141 on the movable rack 114 is engaged with the second positioning groove, so that the docking point of the first semicircular inner gear 1121 and the second semicircular inner gear 1122 are re-located on the same straight line with the docking point of the two semicircular positioning frames 11, and then it can be easily disassembled.

[0025] Example 2 A method for installing a continuous beam cast-in-place section support includes the following specific steps: S1. Fix the surface of the steel pipe short column with a clamp in advance, and fix the top of the steel pipe short column with a ring positioning frame 1; S2. The operator first connects the first section of the steel pipe short column to the pre-buried steel pipe pile foundation on the ground, and then uses a truck crane to lift the steel pipe short column to be spliced ​​to the top of the first section of the steel pipe short column; S3, when it is about to touch the first section of steel pipe short column (such as Figure 2 ), start the cylinder 1110, so that the telescopic end of the cylinder 1110 is completely retracted, and at this time the four steel pipe positioning rods 115 move simultaneously to contact and position with the steel pipe short column (such as Figure 3 ), make the hoisted steel pipe short column and the first section of steel pipe short column neatly docked and connected by bolts; S4. Splice in the same manner as S3.

[0026] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A continuous beam cast-in-situ section bracket auxiliary installation device, characterized by: The annular positioning frame (1) is composed of two semicircular positioning frames (11), the two semicircular positioning frames (11) are detachably connected via locking bolts (110), and the annular positioning frame (1) is fixedly mounted on the top of a steel pipe short column; An annular cavity (111) is provided inside the annular positioning frame (1), an annular internal gear (112) is provided inside the annular cavity (111), the annular internal gear (112) is meshedly connected with at least four pinions (113), each of the semicircular positioning frames (11) is divided into two pinions (113), one side of the pinion (113) is meshedly connected with a moving rack (114), a steel pipe positioning rod (115) is installed on the upper surface of the moving rack (114), a cylinder (1110) is provided below any one of the moving racks (114), the cylinder (1110) is fixed to the lower surface of the annular positioning frame (1), the telescopic end of the cylinder (1110) is fixedly connected to the moving rack (114) through a connecting plate (116), and when the cylinder (1110) is fully retracted, the steel pipe positioning rod (115) contacts the outer surface of the steel pipe short column to achieve positioning; The annular internal gear (112) comprises a first semicircular internal gear (1121) and a second semicircular internal gear (1122), wherein both ends of the first semicircular internal gear (1121) are connected to a clamping assembly, and both ends of the second semicircular internal gear (1122) are provided with slots (1122-1) matching the clamping assembly.

2. The auxiliary installation device for the cast-in-situ section of a continuous beam according to claim 1, characterized in that: An annular slide (117) is fixed to the inner wall of the annular cavity (111), and an annular slide groove (1123) matching the annular slide groove (1123) is formed on the outer surface of the annular internal gear (112), and the annular slide groove (1123) is slidably connected to the annular slide groove (1123).

3. The auxiliary installation device for the cast-in-situ section of a continuous beam according to claim 1, characterized in that: A support groove (118) is fixed on the outer surface of the annular positioning frame (1), the movable rack (114) is located inside the support groove (118), a support rod (119) is fixed on the inner wall of the support groove (118), and the movable rack (114) is slidably sleeved on the outer surface of the support rod (119).

4. The auxiliary installation device for the cast-in-situ section of a continuous beam according to claim 1, characterized in that: The steel pipe positioning rod (115) includes a vertical rod (1151) fixed on the upper surface of the movable rack (114), a horizontal rod (1152) is fixed to the top of the vertical rod (1151), and a positioning pulley (1153) is installed at one end of the horizontal rod (1152). The upper surface of the annular positioning frame (1) is provided with a strip-shaped opening to facilitate the movement of the steel pipe positioning rod (115) inside the strip-shaped opening.

5. The auxiliary installation device for the cast-in-situ section of a continuous beam according to claim 1, characterized in that: The clamping assembly comprises a connecting block (1121-1) fixed at the port of the first semicircular internal gear (1121); an opening is provided on the outer surface of the connecting block (1121-1); a spring (1121-2) is fixed inside the opening; a clamping block (1121-3) is fixed to one end of the spring (1121-2); a clamping hole (1122-2) is provided on the surface of the slot (1122-1); the clamping hole (1122-2) is engaged with the clamping block (1121-3).

6. The auxiliary installation device for the cast-in-situ section support of a continuous beam according to claim 1, characterized in that: A retractable positioning bead (1141) is embedded in the side wall of the movable rack (114), and a first positioning groove and a second positioning groove matching the positioning bead (1141) are formed on the inner wall of the support groove (118).

7. The auxiliary installation device for the cast-in-situ section support of a continuous beam according to claim 6, characterized in that: When the positioning bead (1141) is engaged with the first positioning groove, the steel pipe positioning rod (115) contacts the steel pipe short column. When the positioning bead (1141) is engaged with the second positioning groove, the cylinder (1110) extends to the maximum stroke, and the joints of the first semicircular internal gear (1121) and the second semicircular internal gear (1122) are located on the same straight line as the joints of the two semicircular positioning frames (11).

8. The method for installing a cast-in-situ continuous beam support according to claim 1, characterized in that: The specific steps are as follows: S1. Fix the surface of the steel pipe short column with a clamp in advance, and fix the top of the steel pipe short column with a ring positioning frame (1); S2. The operator first connects the first section of the steel pipe short column to the pre-buried steel pipe pile foundation on the ground, and then uses a truck crane to lift the steel pipe short column to be spliced ​​to the top of the first section of the steel pipe short column; S3. When the lifting is about to contact the first section of the steel pipe short column, the cylinder (1110) is started to completely retract the telescopic end of the cylinder (1110). At this time, the four steel pipe positioning rods (115) are simultaneously moved to contact and position the steel pipe short column, so that the hoisted steel pipe short column and the first section of the steel pipe short column are neatly connected and connected by bolts; S4. Splice in the same manner as S3.

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