An integrated device for prefabricated pier column butt jointing and wet joint casting and its construction method

Abstract

The present invention provides an integrated device for docking and wet joint casting of prefabricated piers, comprising a base for docking prefabricated piers and a bridge-erecting machine for hoisting prefabricated piers, and also comprising an automatic opening and closing mold mechanism arranged on the top of the base for wet joint casting. The front end of the bridge-erecting machine is provided with a front support leg mounted on the automatic opening and closing mold mechanism. A lifting trolley is slidably provided on the bridge-erecting machine. The lifting trolley is connected to a sling for hoisting the prefabricated piers via a steel wire rope, and automatic measuring devices for docking and positioning are provided on both sides of the bottom edge of the crossbeam of the sling. Through the cooperation between the bridge-erecting machine, the automatic measuring device and the automatic opening and closing mold mechanism, the positioning and installation of the prefabricated piers and the mold closing effect of wet joint casting are achieved, and the whole process is completed automatically without the need for additional lifting command personnel, thereby achieving fast and efficient initial positioning.

Description

Technical Field

[0001] The present invention relates to the field of prefabricated assembled bridge erection, and in particular to an integrated device for prefabricated pier column butt connection and wet joint casting and a construction method thereof. Background Art

[0002] With the gradual popularization of prefabricated bridges in China, prefabricated piers are widely used in bridge projects. Prefabricated piers are connected to the abutments through cast-in-place wet joints. Extended steel bars are usually reserved at the bottom of the prefabricated piers, and exposed steel bars are also reserved at the abutments. The pier steel bars and the abutment steel bars must be connected into a whole through steel bar connectors to ensure the reliability of the connection between the piers and the abutments. Therefore, the installation accuracy requirements of prefabricated piers are very high.

[0003] At present, the Chinese patent CN115233563A discloses a method for installing prefabricated pier columns, which includes the following steps: Building a pedestal foundation: Casting a pedestal. Installing a positioning system: Screw assemblies and jacks are set around the pedestal. Preparation for pier column installation. Pre-installation of pier columns: The pier columns are gradually lowered along the prestressed steel bars on the pedestal. When the lifting force of the gantry crane is reduced to a preset value, the pier columns are adjusted. Cleaning the pedestal foundation: Blowing off the dust on the surface of the pedestal and removing rust from the prestressed steel bars. Formal lifting of the pier columns: The pier columns are gradually lowered along the prestressed steel bars on the pedestal. Prestressed steel bar tensioning construction: The prestressed steel bars are tensioned. Grouting construction: The slurry is pressed into the grouting port of the pier column by a grouting machine. Anchor concrete pouring: The anchor is poured on the pier column with concrete. The purpose of the present invention is a prefabricated pier column installation method, which can facilitate construction personnel to adjust the pier columns, thereby ensuring the connection strength of the pier columns and the quality of the project.

[0004] Then the alignment of prefabricated pier columns mainly relies on manual hand winches and jacks for alignment, and manual formwork for wet joints. Manual formwork is difficult in a small space with limited site conditions, and the turnover of formwork is difficult and inefficient. Therefore, an integrated device for prefabricated pier column docking and wet joint casting and its construction method are proposed to solve the above problems. Summary of the Invention

[0005] The main purpose of the present invention is to provide an integrated device for prefabricated pier column docking and wet joint casting and its construction method, so as to solve the problems that the existing solutions mainly rely on manual hand winches and jacks for alignment, manual formwork for wet joints, difficulty in manual formwork in a small space with limited site, and difficulty in the turnover and use of formwork, which is inefficient.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an integrated device for docking and wet joint casting of prefabricated piers, including a base for docking prefabricated piers and a bridge-building machine for lifting prefabricated piers, and also including an automatic opening and closing mold mechanism for wet joint casting arranged on the top of the base. The front end of the bridge-building machine is provided with front support legs mounted on the automatic opening and closing mold mechanism. A lifting trolley is slidably arranged on the bridge-building machine. The lifting trolley is connected to a sling for lifting the prefabricated piers through a steel wire rope, and automatic measuring devices for docking positioning are provided at the edges on both sides of the bottom of the sling beam.

[0007] In a preferred embodiment, the automatic measuring device is composed of two groups of high-definition cameras respectively arranged at the edges of both sides of the bottom of the spreader beam, and the output ends of the high-definition cameras are connected to the photographic imaging system.

[0008] In the preferred embodiment, the automatic opening and closing mold mechanism includes a frame and an intermediate automatic opening and closing mold assembly and an end automatic opening and closing mold assembly built into the frame. When the automatic opening and closing mold assembly and the end automatic opening and closing mold assembly are closed, the docking point between the prefabricated pier column and the base is enclosed.

[0009] In the preferred embodiment, the intermediate automatic opening and closing mold assembly is composed of four symmetrically distributed intermediate automatic opening and closing mold units. The automatic opening and closing mold unit includes an intermediate opening and closing arm hinged at one end on the inside of the frame, an intermediate template opening and closing cylinder hinged at both ends between the inside of the frame and the back of the intermediate opening and closing arm, an intermediate template telescopic cylinder arranged on the inner side of the intermediate opening and closing arm, and an intermediate template arranged on the inner side of the intermediate opening and closing arm and connected to the telescopic end of the intermediate template telescopic cylinder.

[0010] In the preferred embodiment, the end automatic opening and closing mold assembly is composed of two symmetrically distributed end automatic opening and closing mold units, and the end automatic opening and closing mold unit includes an end template telescopic cylinder arranged on the inside of the frame, an end template arranged on the telescopic end of the end template telescopic cylinder, a corner template hingedly arranged on both sides of the end template, a corner connector arranged on both sides of the back of the end template, and a corner opening and closing cylinder with both ends hingedly arranged on the corner connector and the back of the corner template.

[0011] In a preferred embodiment, the tops of the end formwork and the middle formwork are both provided with guide inclined plates, and the contact surfaces between the guide inclined plates and the prefabricated pier columns are provided with polytetrafluoroethylene slide plates.

[0012] In a preferred embodiment, automatic plug-in and pull-out pins are provided on both sides of the spreader, and sockets adapted to the automatic plug-in and pull-out pins are provided on both sides of the top of the prefabricated pier.

[0013] In the preferred embodiment, the top of the frame is provided with an inverted docking seat connected to the bottom end of the front support leg, and the bottom end of the front support leg is provided with a docking plate adapted to the inverted docking seat. The inverted docking seat includes a support platform fixed on the top of the frame, an inverted docking seat slidably arranged on the top of the support platform, two inverted plates symmetrically arranged on the inverted docking seat and movable in opposite directions, and an electric push rod arranged on the support platform for pushing the inverted docking seat to slide.

[0014] In a preferred embodiment, the support platform includes a support plate fixed to the top of the frame, a vertical plate arranged at one end of the support plate, a through hole arranged on the vertical plate for the telescopic end of the electric push rod to pass through, two grooves provided on the top of the vertical plate, and a sliding rod arranged in the groove;

[0015] The reverse-lock docking seat includes a sliding platform with a concave cross-section, two sliding sleeves arranged at the bottom of the sliding platform and slidably connected to the two sliding rods respectively, a docking platform arranged at the center of the top of the sliding platform for docking the front legs, and two limiting sliding rods and a reverse moving screw assembly arranged between the opposite inner walls of the sliding platform and passing through the docking platform, wherein the docking platform is provided with a through hole for the limiting sliding rod and the reverse moving screw assembly to pass through;

[0016] The reverse moving screw assembly includes two rotating bearings respectively arranged on opposite walls of the sliding platform, a rotating screw arranged between the two rotating bearings, and a driving motor arranged on one side of the sliding platform and drivingly connected to one end of the rotating screw, wherein the rotating screw has two opposite threaded sections;

[0017] The reverse buckle plate includes a vertical plate and a buckle plate arranged on the top of the vertical plate and extending to one side. The vertical plate is provided with a limit sliding hole and a threaded hole for the limit sliding rod and the rotating screw to pass through. The two reverse buckle plates are respectively connected to the two opposite threaded wires through the threaded holes.

[0018] The top of the docking platform is provided with an embedded hole, in which an electric plug is embedded. The docking plate and the buckle plate are provided with insertion holes for the electric plug to pass through.

[0019] The method includes:

[0020] S1. Start the crane trolley and hoist the prefabricated pier column with the sling, and then reach the initial horizontal and vertical positioning position under the guidance of the automatic measuring device;

[0021] S2, control the middle template opening and closing oil cylinder to gradually close the middle template, and control the lifting system of the crane trolley to drop the hook under the guidance of the automatic measuring device;

[0022] S3, control the telescopic oil cylinder of the middle template and the telescopic oil cylinder of the end template to adjust the telescopic movement of the middle template and the end template, so as to use the guide inclined plates on the top of the middle template and the end template to achieve the precise positioning of the prefabricated pier column;

[0023] S4. After the prefabricated pier column and the reserved steel bars of the cap are connected, the middle formwork is precisely closed by using the middle formwork opening and closing cylinder and the middle formwork telescopic cylinder. The corner formwork and the end formwork are precisely closed under the control of the end formwork telescopic cylinder and the corner opening and closing cylinder. After closing, the wet joint is poured.

[0024] S5. After the cast-in-place wet joints are strengthened, the middle template opening and closing oil cylinder, the middle template telescopic oil cylinder, the end template telescopic oil cylinder and the corner opening and closing oil cylinder are controlled to open the middle template, corner template and end template;

[0025] S6. Control the bridge erection machine to move forward and repeat the above alignment and mold closing process to achieve accurate alignment of the next pier column and mold closing of the wet joint template.

[0026] The present invention provides an integrated device for prefabricated pier column butt jointing and wet joint casting and a construction method thereof, which has the following beneficial effects:

[0027] 1. Through the coordination between the bridge erection machine, automatic measuring device and automatic mold opening and closing mechanism, the positioning and installation of prefabricated pier columns and the mold closing effect of wet joint casting are achieved. The whole process is completed automatically without the need for additional lifting and command personnel, achieving fast and efficient initial positioning;

[0028] 2. By setting up guiding inclined plates and polytetrafluoroethylene slides on the formwork, it is easy for the prefabricated pier columns to slide down along the guiding inclined surface on the upper part of the formwork after positioning. When the prefabricated pier columns reach the connection height with the reserved steel bars of the pedestal, the automatic measuring device guides the extension and contraction of the oil cylinder. The polytetrafluoroethylene slides on the guiding contact surface achieve precise positioning of the pier columns. The whole process is intelligent and efficient, and no manual intervention or assistance is required.

[0029] 3. By setting the automatic opening and closing mold mechanism on the front support leg, it is convenient to combine the automatic opening and closing mold mechanism with the bridge erection machine, which not only plays a supporting effect but also facilitates transportation and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings and examples:

[0031] Figure 1 This is a structural diagram of the prefabricated pier column hoisting of the present invention;

[0032] Figure 2 This is a structural diagram of the connection between the cap, prefabricated pier and automatic opening and closing mould mechanism of the present invention;

[0033] Figure 3 This is a top view of the automatic opening and closing mold mechanism structure of the present invention;

[0034] Figure 4 This is a structural diagram of the intermediate automatic opening and closing mold assembly of the present invention;

[0035] Figure 5 This is a structural diagram of the end automatic opening and closing mold assembly of the present invention;

[0036] Figure 6 This is a top view of the automatic opening and closing mold mechanism structure of the present invention;

[0037] Figure 7 This is a structural diagram of the connection between the guide ramp and the polytetrafluoroethylene slide plate of the present invention;

[0038] Figure 8 This is a schematic diagram of the docking structure of the prefabricated pier and the cap in the present invention;

[0039] Figure 9 This is a schematic diagram of the wet joint structure of the prefabricated pier and the cap in the present invention;

[0040] Figure 10 It is a structural diagram of the sling of the present invention;

[0041] Figure 11 This invention Figure 10 A magnified view of the structure in the middle;

[0042] Figure 12 This is a structural diagram of the reverse-button docking seat of the present invention;

[0043] Figure 13 This is a structural diagram of the connection between the reverse buckle docking seat and the front legs of the present invention;

[0044] Figure 14 It is a structural diagram of the support platform of the present invention;

[0045] Figure 15 This is a structural diagram of the reverse-button docking seat of the present invention;

[0046] Figure 16 This is a top view of the reverse buckle docking seat structure of the present invention;

[0047] Figure 17 It is a structural diagram of the buckle plate of the present invention;

[0048] Figure 18 This is an exploded structural diagram of the reverse-lock docking seat and the electric latch of the present invention;

[0049] Figure: Cap 1; Automatic mold opening and closing mechanism 2; Frame 21; Automatic mold opening and closing assembly 22; Middle opening and closing arm 221; Middle template opening and closing cylinder 222; Middle template telescopic cylinder 223; Middle template 224; End automatic mold opening and closing assembly 23; End template telescopic cylinder 231; End template 232; Corner connector 233; Corner opening and closing cylinder 234; Corner template 235; Guide ramp 24; Polytetrafluoroethylene slide 25; Prefabricated pier 3; Bridge erection machine 4; Lifting trolley 5; Spreader 7; Front outrigger 8; Docking plate 81; Automatic measuring device 9; Automatic plug-in / extraction pin 1 0; reverse-lock docking seat 11; support platform 12; reverse-lock sliding seat 13; electric push rod 14; reverse-lock plate 15; support plate 121; vertical plate 122; through hole 123; groove 124; sliding rod 125; docking platform 131; sliding sleeve 132; sliding platform 133; limiting slide 134; reverse moving screw rod assembly 135; through hole 136; electric latch 137; embedded hole 138; rotating bearing 1351; rotating screw rod 1352; driving motor 1353; vertical plate 151; buckle plate 152; limiting slide hole 153; threaded hole 154; insertion hole 155. DETAILED DESCRIPTION

[0050] Example 1

[0051] like Figure 1-11 As shown, an integrated device for prefabricated pier column docking and wet joint casting includes a base 1 for docking prefabricated pier columns 3 and a bridge-building machine 4 for lifting the prefabricated pier columns 3, and also includes an automatic opening and closing mold mechanism 2 for wet joint casting arranged on the top of the base 1. The front end of the bridge-building machine 4 is provided with a front support leg 8 mounted on the automatic opening and closing mold mechanism 2, and the rear end of the bridge-building machine 4 is mounted on the prefabricated pier column 3 or prefabricated beam that has been completed. A lifting trolley 5 is slidably provided on the bridge-building machine 4, and the lifting trolley 5 is connected to a hoist 7 for lifting the prefabricated pier column 3 through a steel wire rope. Automatic measuring devices 9 for docking positioning are provided on both side edges of the bottom of the crossbeam of the hoist 7.

[0052] During use, the prefabricated pier column 3 is lifted to the top of the automatic opening and closing mold mechanism 2 by controlling the lifting device 7 through the lifting trolley 5, and then docking and positioning are carried out through the automatic measuring device 9 to ensure that the prefabricated pier column 3 can fall into the automatic opening and closing mold mechanism 2 and complete docking with the base 1, and the lifting system of the lifting trolley 5 is used to complete the docking installation of the prefabricated pier column 3. After the docking is completed, the docking point is automatically closed by the automatic opening and closing mold mechanism 2, thereby facilitating the pouring of the wet joint, and at the same time, the automatic opening and closing mold mechanism 2 is connected to the front support leg 8 of the bridge-building machine 4, so as to facilitate the installation of the automatic opening and closing mold mechanism 2 in combination with the bridge-building machine 4.

[0053] In the preferred embodiment, the automatic measuring device 9 is composed of two groups of high-definition cameras arranged at the edges of both sides of the bottom of the crossbeam of the sling 7. The output end of the high-definition camera is connected to the photographic imaging system. The top sections of the two groups of high-definition cameras are vertically distributed. In this embodiment, the number of high-definition cameras in a group is two. The high-definition camera is used to measure the distance between the prefabricated pier 3 and the automatic opening and closing mold mechanism 2 when docking, thereby realizing docking positioning.

[0054] In the preferred embodiment, the automatic opening and closing mold mechanism 2 includes a frame 21 and an intermediate automatic opening and closing mold assembly 22 and an end automatic opening and closing mold assembly 23 built into the frame 21. When the intermediate automatic opening and closing mold assembly 22 and the end automatic opening and closing mold assembly 23 are closed, the docking point between the docking prefabricated pier 3 and the base 1 is enclosed.

[0055] It should be noted that the frame 21 is a rectangular frame, and the base 1 is pre-embedded with embedded connecting ribs extending to its top. The frame 21 is provided with holes for the embedded connecting ribs to pass through. After the embedded connecting ribs pass through the frame 21, nuts for locking are threadedly installed.

[0056] Among them, the intermediate automatic opening and closing mold assembly 22 is composed of four symmetrically distributed intermediate automatic opening and closing mold units. The automatic opening and closing mold unit includes an intermediate opening and closing arm 221 with one end hingedly set on the inner side of the frame 21, an intermediate template opening and closing cylinder 222 with both ends hingedly set between the inner side of the frame 21 and the back side of the intermediate opening and closing arm 221, an intermediate template telescopic cylinder 223 fixed on the inner side of the intermediate opening and closing arm 221, and an intermediate template 224 set on the inner side of the intermediate opening and closing arm 221 and connected to the telescopic end of the intermediate template telescopic cylinder 223. In this embodiment, the number of intermediate template telescopic cylinders 223 is two.

[0057] When in use, the middle template opening and closing arm 221 is opened and closed by telescoping the middle template opening and closing oil cylinder 222, thereby realizing the opening and closing of the middle template 224. At the same time, the middle template telescopic oil cylinder 223 can realize the precise opening and closing control of the middle template 224.

[0058] In the preferred embodiment, the end automatic opening and closing mold assembly 23 is composed of two symmetrically distributed end automatic opening and closing mold units, and the end automatic opening and closing mold units include an end template telescopic cylinder 231 fixed on the inner side of the frame 21, an end template 232 fixed on the telescopic end of the end template telescopic cylinder 231, a corner template 235 hingedly arranged on both sides of the end template 232, a corner connector 233 fixed on both sides of the back of the end template 232, and a corner opening and closing cylinder 234 hingedly arranged at both ends on the corner connector 233 and the back of the corner template 235, wherein the number of the end template telescopic cylinder 231 is two.

[0059] When in use, the end template 232 is controlled to be extended and retracted by the end template extension cylinder 231 to open and close the mold of the end of the prefabricated pier column 3. At the same time, the opening and closing of the corner template 235 can be controlled by the extension and retraction of the corner opening and closing cylinder 234, thereby opening and closing the mold of the corner of the prefabricated pier column 3.

[0060] It should be noted that when the middle template telescopic cylinder 223, the end template 232 and the corner template 235 are closed, the joint between the prefabricated pier column 3 and the base 1 is enclosed, thereby facilitating the pouring of the wet joint at the joint.

[0061] In the preferred embodiment, the tops of the end formwork 232 and the middle formwork 224 are both welded with guide ramps 24, which are inclined inward. A polytetrafluoroethylene slide 25 is provided on the contact surface between the guide ramp 24 and the prefabricated pier 3, and the polytetrafluoroethylene slide 25 is fixed to the contact surface of the prefabricated pier 3 by bolts.

[0062] When in use, the positions of the guide inclined plate 24 and the polytetrafluoroethylene slide plate 25 can be controlled by controlling the expansion and contraction of the template, thereby utilizing the contact between the prefabricated pier column 3 and the polytetrafluoroethylene slide plate 25 for precise positioning and guidance.

[0063] In the preferred embodiment, automatic plug-in pins 10 are fixed on both sides of the sling 7, and sockets compatible with the automatic plug-in pins are respectively provided on both sides of the top of the prefabricated pier 3. The telescopic end of the automatic plug-in pin 10 passes through the sling 7 and is inserted into the corresponding socket to achieve docking between the sling 7 and the prefabricated pier 3.

[0064] Example 2

[0065] Further illustrate with reference to Example 1, Figure 12-18 In the structure shown, the top of the frame 21 is fixedly provided with an inverted docking seat 11 connected to the bottom end of the front leg 8. The inverted docking seat 11 can be connected to the frame 21 by welding or bolting. The bottom end of the front leg 8 is fixedly provided with a docking plate 81 adapted to the inverted docking seat 11. The front leg 8 is connected to the frame 21 by the inverted connection of the inverted docking seat 11 and the docking plate 81.

[0066] Among them, the reverse-locking docking seat 11 includes a support platform 12 fixed on the top of the frame 21, an reverse-locking sliding seat 13 slidingly arranged on the top of the support platform 12, two reverse-locking plates 15 symmetrically arranged on the reverse-locking sliding seat 13 and movable in opposite directions, and an electric push rod 14 arranged on the support platform 12 for pushing the reverse-locking sliding seat 13 to slide. By pushing the reverse-locking sliding seat 13 to slide on the support platform 12 through the electric push rod 14, the position of the reverse-locking sliding seat 13 can be appropriately adjusted according to the position of the front support leg 8, and when the docking plate 81 is connected to the reverse-locking sliding seat 13, the reverse-locking effect can be realized by moving the reverse-locking plates 15 in opposite directions.

[0067] Specifically, the support platform 12 includes a support plate 121 fixed to the top of the frame 21, a vertical plate 122 provided at one end of the support plate 121, a through hole 123 provided on the vertical plate 122 for the telescopic end of the electric push rod 14 to pass through, two grooves 124 provided on the top of the vertical plate 122, and a sliding rod 125 provided in the groove 124;

[0068] The inverted sliding seat 13 includes a sliding platform 133 with a concave cross-section, two sliding sleeve shafts 132 fixed to the bottom of the sliding platform 133 and slidably connected to the two sliding rods 125 respectively, a docking platform 131 integrally provided at the center of the top of the sliding platform 133 for docking with the front support leg 8, and two limiting sliding rods 134 and a reverse moving screw rod assembly 135 provided between the opposite inner walls of the sliding platform 133 and passing through the docking platform 131. The docking platform 131 is provided with a through hole 136 for the limiting sliding rod 134 and the reverse moving screw rod assembly 135 to pass through.

[0069] The reverse moving screw assembly 135 includes two rotating bearings 1351 fixed to opposite walls of the sliding platform 133, a rotating screw 1352 disposed between the two rotating bearings 1351, and a drive motor 1353 disposed on one side of the sliding platform 133 and drivingly connected to one end of the rotating screw 1352. The rotating screw 1352 has two oppositely threaded sections.

[0070] The reverse buckle plate 15 includes a vertical plate 151 and a buckle plate 152 arranged on the top of the vertical plate 151 and extending to one side. The vertical plate 151 is provided with a limiting sliding hole 153 and a threaded hole 154 for the limiting sliding rod 134 and the rotating screw rod 1352 to pass through. The two reverse buckle plates 15 are respectively threadedly connected to the two sections of opposite threaded wires through the threaded holes 154.

[0071] During use, the electric push rod 14 pushes the reverse locking sliding seat 13 to slide on the support plate 121, thereby adjusting the specific position of the reverse locking sliding seat 13 according to the position of the front leg 8. After the docking plate 81 of the front leg 8 falls on the reverse locking sliding seat 13, the driving motor 1353 drives the rotating screw 1352 to rotate, so that the two symmetrically arranged reverse locking plates 15 move in opposite directions, and then the buckle plate 152 is used to buckle the docking plate 81 in it. At the same time, by reversing the driving motor 1353, the two reverse locking plates 15 can be driven to move in the opposite direction to release the buckle.

[0072] In the preferred embodiment, an embedded hole 138 is provided on the top of the docking platform 131, and an electric bolt 137 is embedded in the embedded hole 138. An insertion hole 155 for the electric bolt 137 to pass through is provided on the docking plate 81 and the buckle plate 152, so that the electric bolt 137 can pass through the insertion holes 155 on the docking plate 81 and the buckle plate 152 in turn to achieve a complete locking effect.

[0073] In the preferred embodiment, a groove is provided on the top of the docking platform 131, in which a stress sensor is embedded. The stress sensor senses the rise and fall of the docking plate 81 on the docking platform 131, and transmits a signal to start the drive motor 1353 to work, thereby controlling the two flip plates 15 to move toward each other.

[0074] In the preferred embodiment, the vertical plate 122 is at the same height as the docking platform 131 , so that the long strip docking plate 81 can be fixed by using a plurality of reverse-locking docking seats 11 .

[0075] Example 3

[0076] Further illustrate with reference to Example 1, Figure 1-18 The structure shown,

[0077] S1. Start the lifting trolley 5 and hoist the prefabricated pier 3 through the sling 7, and then reach the initial horizontal and elevation positioning position under the guidance of the automatic measuring device 9;

[0078] S2, control the middle template opening and closing oil cylinder 222 to gradually close the middle template 224, and control the lifting system of the crane 5 to drop the hook under the guidance of the automatic measuring device 9;

[0079] S3, control the middle template telescopic oil cylinder 223 and the end template telescopic oil cylinder 231 to adjust the middle template 224 and the end template 232 to extend and retract, thereby using the guide inclined plates 24 on the top of the middle template 224 and the end template 232 to achieve accurate positioning of the prefabricated pier 3;

[0080] S4. After the prefabricated pier column 3 is connected to the steel bars reserved for the cap 1, the middle template 224 is precisely molded using the middle template opening and closing cylinder 222 and the middle template telescopic cylinder 223. The corner template 235 and the end template 232 are precisely molded under the control of the end template telescopic cylinder 231 and the corner opening and closing cylinder 234. After the mold is completed, the wet joint is poured;

[0081] S5. After the cast-in-place wet joints are strong, the middle template opening and closing cylinder 222, the middle template telescopic cylinder 223, the end template telescopic cylinder 231 and the corner opening and closing cylinder 234 are controlled to open the middle template 224, the corner template 235 and the end template 232;

[0082] S6, control the bridge erection machine 4 to move forward, repeat the above-mentioned alignment and mold closing process to achieve accurate alignment of the next pier column and mold closing of the wet joint template.

[0083] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. In other words, equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An integrated device for butt jointing and wet joint casting of prefabricated pier columns, comprising a cap (1) for butt jointing prefabricated pier columns (3) and a bridge erection machine (4) for hoisting the prefabricated pier columns (3), characterized in that: It also includes an automatic opening and closing mold mechanism (2) arranged on the top of the pedestal (1) for wet joint casting, a front end of the bridge erection machine (4) is provided with a front support leg (8) erected on the automatic opening and closing mold mechanism (2), a lifting trolley (5) is slidably provided on the bridge erection machine (4), the lifting trolley (5) is connected to a sling (7) for lifting the prefabricated pier (3) through a steel wire rope, and automatic measuring devices (9) for docking positioning are provided at both side edges of the bottom of the crossbeam of the sling (7); The automatic measuring device (9) is composed of two sets of high-definition cameras respectively arranged at the edges of both sides of the bottom of the crossbeam of the sling (7), and the output ends of the high-definition cameras are connected to a photographic imaging system; The automatic opening and closing mold mechanism (2) comprises a frame (21) and an intermediate automatic opening and closing mold assembly (22) and an end automatic opening and closing mold assembly (23) built into the frame (21). When the automatic opening and closing mold assembly (22) and the end automatic opening and closing mold assembly (23) are closed, the joint between the butt-jointed prefabricated pier column (3) and the bearing platform (1) is closed. The intermediate automatic opening and closing mold assembly (22) is composed of four symmetrically distributed intermediate automatic opening and closing mold units, each of which includes an intermediate opening and closing arm (221) hingedly arranged at one end on the inner side of the frame (21), an intermediate template opening and closing oil cylinder (222) hingedly arranged at both ends between the inner side of the frame (21) and the back side of the intermediate opening and closing arm (221), an intermediate template telescopic oil cylinder (223) arranged on the inner side of the intermediate opening and closing arm (221), and an intermediate template (224) arranged on the inner side of the intermediate opening and closing arm (221) and connected to the telescopic end of the intermediate template telescopic oil cylinder (223); The end automatic opening and closing mold assembly (23) is composed of two symmetrically distributed end automatic opening and closing mold units, the end automatic opening and closing mold units comprising an end template telescopic oil cylinder (231) arranged on the inner side of the frame (21), an end template (232) arranged on the telescopic end of the end template telescopic oil cylinder (231), a corner template (235) hingedly arranged on both sides of the end template (232), a corner connector (233) arranged on both sides of the back of the end template (232), and a corner opening and closing oil cylinder (234) hingedly arranged at both ends on the corner connector (233) and the back of the corner template (235); A guide inclined plate (24) is provided on the top of each of the end template (232) and the middle template (224), and a polytetrafluoroethylene slide plate (25) is provided on the contact surface between the guide inclined plate (24) and the prefabricated pier column (3).

2. The integrated device for prefabricated pier column butt jointing and wet joint casting according to claim 1, characterized in that: Automatic plug-in and pull-out pins (10) are provided on both sides of the sling (7), and sockets adapted to the automatic plug-in and pull-out pins are provided on both sides of the top of the prefabricated pier column (3).

3. The integrated device for prefabricated pier column butt jointing and wet joint casting according to claim 1, characterized in that: The top of the frame (21) is provided with an inverted docking seat (11) connected to the bottom end of the front leg (8), and the bottom end of the front leg (8) is provided with a docking plate (81) adapted to the inverted docking seat (11). The inverted docking seat (11) includes a support platform (12) fixed on the top of the frame (21), an inverted sliding seat (13) slidably arranged on the top of the support platform (12), two inverted plates (15) symmetrically arranged on the inverted sliding seat (13) and movable in opposite directions, and an electric push rod (14) arranged on the support platform (12) for pushing the inverted sliding seat (13) to slide.

4. The integrated device for prefabricated pier column butt jointing and wet joint casting according to claim 3, characterized in that: The support platform (12) includes a support plate (121) fixed to the top of the frame (21), a vertical plate (122) arranged at one end of the support plate (121), a through hole (123) provided on the vertical plate (122) for the telescopic end of the electric push rod (14) to pass through, two grooves (124) provided on the top of the vertical plate (122), and a sliding rod (125) arranged in the groove (124); The reverse-locking sliding seat (13) includes a sliding platform (133) with a concave cross-section, two sliding sleeve shafts (132) arranged at the bottom of the sliding platform (133) and respectively slidably connected to the two sliding rods (125), a docking platform (131) arranged at the center of the top of the sliding platform (133) for docking the front support leg (8), and two limiting sliding rods (134) and a reverse moving screw rod assembly (135) arranged between the opposite inner wall surfaces of the sliding platform (133) and passing through the docking platform (131), wherein a through hole (136) is provided on the docking platform (131) for the limiting sliding rod (134) and the reverse moving screw rod assembly (135) to pass through; The reverse moving screw assembly (135) comprises two rotating bearings (1351) respectively arranged on opposite walls of the sliding platform (133), a rotating screw (1352) arranged between the two rotating bearings (1351), and a driving motor (1353) arranged on one side of the sliding platform (133) and connected to one end of the rotating screw (1352), wherein the rotating screw (1352) is provided with two oppositely threaded wires; The reverse buckle plate (15) includes a vertical plate (151) and a buckle plate (152) arranged on the top of the vertical plate (151) and extending to one side. The vertical plate (151) is provided with a limit sliding hole (153) and a threaded hole (154) for the limit sliding rod (134) and the rotating screw rod (1352) to pass through. The two reverse buckle plates (15) are respectively connected to the two opposite threaded wires through the threaded holes (154). The top of the docking platform (131) is provided with an embedded hole (138), an electric plug (137) is embedded in the embedded hole (138), and an insertion hole (155) for the electric plug (137) to pass through is provided on the docking plate (81) and the buckle plate (152).

5. A construction method for an integrated device for prefabricated pier column butt jointing and wet joint casting according to any one of claims 1 to 4, characterized in that: The method includes: S1, start the lifting trolley (5), and hoist the prefabricated pier (3) through the lifting device (7), and then reach the initial horizontal and elevation positioning position under the guidance of the automatic measuring device (9); S2, controlling the middle template opening and closing oil cylinder (222) to gradually close the middle template (224), and controlling the lifting system of the crane trolley (5) to drop the hook under the guidance of the automatic measuring device (9); S3, controlling the telescopic oil cylinder (223) of the middle template and the telescopic oil cylinder (231) of the end template to adjust the telescopic movement of the middle template (224) and the end template (232), thereby utilizing the guide inclined plates (24) on the top of the middle template (224) and the end template (232) to achieve accurate positioning of the prefabricated pier column (3); S4. After the prefabricated pier column (3) and the reserved steel bars of the pedestal (1) are connected, the middle template (224) is precisely molded by using the middle template opening and closing oil cylinder (222) and the middle template telescopic oil cylinder (223). The corner template (235) and the end template (232) are precisely molded under the control of the end template telescopic oil cylinder (231) and the corner opening and closing oil cylinder (234). After the mold is completed, the wet joint is poured; S5, after the cast-in-place wet joints are strengthened, the middle template opening and closing oil cylinder (222), the middle template telescopic oil cylinder (223), the end template telescopic oil cylinder (231) and the corner opening and closing oil cylinder (234) are controlled to realize the opening of the middle template (224), the corner template (235) and the end template (232); S6, control the bridge erection machine (4) to move forward, repeat the above alignment and mold closing process to achieve the precise alignment of the next pier column and the mold closing of the wet joint template.

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