A bridge tower tensioning platform for municipal bridge construction and construction method thereof

Abstract

The invention discloses a bridge tower tensioning platform for municipal bridge construction and a construction method thereof, comprising a bridge member, a steel strand, a support platform, a hoisting mechanism and a locking mechanism, wherein a plurality of steel strands are arranged on the inner side of the bridge member, a support platform is arranged on the outer side of the bridge member, a hoisting mechanism is arranged on one side of the support platform, and a locking mechanism is arranged on the other side of the support platform; the support platform comprises a gusset plate, a flat gusset plate, a corner frame, a flat gusset, a sliding plate, a sliding sleeve plate, a rotating arm, a moving plate, a first screw, a gear set, a first hydraulic motor, a support frame, a supporting wheel, a first hand-cranked hoist, a fixed plate and a hanging plate, and the adjacent two sides of the gusset plate are fixedly connected with a plurality of sliding plates; the invention makes adjustments according to the width change of the bridge member to avoid the tensioning platform and the bridge member being too close to each other, causing the member to interfere with the movement of the tensioning platform, and to avoid the tensioning platform and the bridge member being too far away, and to avoid the gap between the tensioning platform and the bridge member being too large, which leads to increased construction difficulty and increased risk factor.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a bridge tower tensioning platform for municipal bridge construction and a construction method thereof. Background Art

[0002] At present, for the tensioning of steel strands, a hollow jack is first put on the steel strands, and a clip is placed in the hole of the anchor plate. After the steel strands are clamped, the steel strands are prestressed by the hollow jack, thereby reducing the tensile stress of the bridge components and avoiding the premature appearance of cracks in the reinforced concrete. Since the bridge components themselves do not have an operating platform for construction workers, it is necessary to build a tensioning platform during the prestressing tensioning operation to facilitate the construction workers to perform tensioning operations;

[0003] After searching, a cantilever beam 0# block diaphragm prestressed tensioning operation platform with application number CN202211139915.1 includes: a tower, the bottom of the tower is fixed on the ground, the top of the tower is fixed on the 0# block, the top of the tower is provided with a tensioning device and a horizontal movement mechanism, and the tower is provided with a lifting device and a tensioning operation platform. There are the following problems in the processing process: the tensioning operation platform can only move vertically up and down. When tensioning construction is performed on components with variable cross-sections, the distance between the tensioning operation platform and the components will be different, which is prone to too close interference, or the distance is too far, which will increase the difficulty and danger of construction. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a bridge tower tensioning platform for municipal bridge construction. The support platform provides support for construction personnel and tensions the steel strands on the bridge components. The lifting mechanism facilitates the operation of the hollow jack. The locking mechanism can prevent the support platform from falling in time to protect the safety of construction personnel.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A bridge tower tensioning platform for municipal bridge construction, comprising a bridge member, a steel strand, a support platform, a hoisting mechanism, and a locking mechanism, wherein a plurality of steel strands are arranged on the inner side of the bridge member, a support platform is arranged on the outer side of the bridge member, a hoisting mechanism is arranged on one side of the support platform, and a locking mechanism is arranged on the other side of the support platform;

[0007] The support platform includes an angle gusset plate, a flat gusset plate, a corner frame, a flat gusset, a sliding plate, a sliding sleeve plate, a rotating arm, a movable plate, a first screw, a gear set, a first hydraulic motor, a support frame, a support wheel, a first hand-cranked hoist, a fixed plate, and a hanging plate. The adjacent two sides of the angle gusset plate are fixedly connected to a plurality of sliding plates, one end of the sliding plate is movably connected to one end of the rotating arm, the other end of the rotating arm is movably connected to the movable plate, the movable plate is connected to the first screw by a thread, one end of the first screw is connected to the output end of the first hydraulic motor by a gear set, and the first hydraulic motor is connected to the motor bracket by a motor bracket. The flat support plate is fixedly connected, the sliding plug plate is slidably connected to the sliding sleeve plate respectively, the sliding sleeve plate and the flat support plate are fixedly connected, the flat support plate is alternately connected end to end with the gusset plate through the sliding plug plate and the sliding sleeve plate to form a closed loop, a support frame is provided on one side of the sliding sleeve plate, a pair of supporting wheels is provided on one side of the support frame, one side of the gusset plate is fixedly connected to the corner frame, both ends of the corner frame are slidably connected to the flat support frame, the flat support frame is fixedly connected to the flat support plate, a pair of hanging plates are provided on one side of the flat support plate, the hanging plate is connected to one end of the first hand-cranked hoist, the other end of the first hand-cranked hoist is connected to the fixed plate, and the fixed plate is fixed on the bridge member;

[0008] The gusset plate and the flat support plate provide working support for the construction workers. The fixed plate is fixed on the bridge member, and is respectively connected to the fixed plate and the hanging plate through the first hand-cranked hoist, and then the support platform is hung on the bridge member. According to the progress of the construction, the first hand-cranked hoist is pulled to pull the support platform upward as a whole. After moving up a certain distance, another set of fixed plates is fixed on the bridge member, and the height is higher than the previous set of fixed plates. Then, another set of first hand-cranked hoists is used to hang them, thereby replacing the previous set of hand-cranked hoists to drive the support platform upward; the first hydraulic motor is driven by the first hand-cranked hoist to move the support platform upward. The gear set provides power for the rotation of the first lead screw, and the first lead screw in turn drives the moving plate to move, and then drives the sliding plate to move through the rotating arm, and the sliding plate slides on the sliding sleeve plate, and then drives the gusset plate to move, adjusts the spacing between the gusset plates, and at the same time adjusts the spacing between the flat support plates, and adaptive sliding occurs between the corner frame and the flat support frame; the support wheel contacts the bridge component, and then provides side support for the flat support plate through the support frame and the sliding sleeve plate, and the support wheel also provides guidance for the movement of the support platform to prevent the flat support plate and the gusset plate from directly contacting the bridge component.

[0009] Preferably, the support frame includes a first leg seat, a first adjusting gear, a second hydraulic motor, a first sliding frame, a second sliding frame, a second leg seat, a slide rail, a pulling plate, a limiting slider, a first gear box, and a third hydraulic motor, wherein both sides of the first leg seat and the second leg seat are provided with tooth grooves, the tooth grooves are meshed with the first adjusting gear, the first adjusting gear is connected to the output end of the second hydraulic motor, the first leg seat is slidably connected to the first sliding frame, the second leg seat and the second sliding frame are slidably connected, the first sliding frame and the second sliding frame are respectively connected to the second hydraulic motor, the second leg seat is slidably connected to a pair of slide rails, the slide rails are respectively fixedly connected to the sliding sleeve plates, one side of the second leg seat is fixedly connected to the pulling plate, one side of the pulling plate is provided with a plurality of tooth grooves, the pulling plate is meshed with the tooth grooves and the second adjusting gear, the second adjusting gear is connected to the output end of the third hydraulic motor through the first gear box, the third hydraulic motor is connected to the limiting slider, the limiting slider and the pulling plate are slidably connected, and the limiting slider and the flat support plate are fixedly connected;

[0010] The second hydraulic motor provides power for the rotation of the first adjusting gear, and the first adjusting gear then cooperates with the teeth and grooves on both sides of the first leg seat and the second leg seat respectively, and then drives the first sliding frame and the second sliding frame to slide on the first leg seat and the second leg seat respectively, and then adjusts the position of the support wheel relative to the flat support plate. The third hydraulic motor drives the second adjusting gear to rotate through the first gear box, and the second adjusting gear then cooperates with the teeth and groove on one side of the pulling plate, driving the pulling plate to slide on the limiting slider, and then drives the second leg seat to slide on the slide rail, adjusting the distance between the second leg seat and the first leg seat.

[0011] Preferably, the hoisting mechanism includes a movable rail, a movable arm, a fourth hydraulic motor, a second gear box, a second lead screw, a rotating sleeve, a rotating frame, a hanging rail, a hanging block, a rotating block, a hanger, and a second hand-cranked hoist, a second hand-cranked hoist is provided in the middle of the hanger, the hanger is slidably connected to a pair of rotating blocks, the rotating block and the hanging block are movably connected, the hanging block and the hanging rail are slidably connected, the hanging rail and the rotating frame are fixedly connected, the rotating frame and the rotating sleeve are fixedly connected, the rotating sleeve is movably connected to the movable arm, the movable arm and a pair of movable rails are slidably connected, the movable rails and the flat support frame are fixedly connected, a second gear box is provided on one side of a group of movable arms, a fourth hydraulic motor is provided on one side of the second gear box, an output end of the fourth hydraulic motor is connected through the second gear box and the second lead screw, the second lead screw is movably connected to a group of movable arms, and the second lead screw is connected to another group of movable arms through a threaded connection;

[0012] The hollow jack is hoisted on the second hand-cranked hoist, and the fourth hydraulic motor drives the second screw to rotate through the second gear box, and the second screw then drives the moving arm to move, adjusts the spacing between the moving arms, and at the same time rotates the rotating sleeve on the moving arm to drive the rotating frame to rotate, and the rotating frame then drives another set of rotating frames to rotate through the hanging rails, hanging blocks, rotating blocks, and hangers, and the rotating frames then rotate away from the moving rails, thereby extending the moving range of the hanging blocks, rotating blocks, and hangers, thereby increasing the operating range of the hollow jack, and when the rotating sleeve and the moving frame rotate on the moving arm, the rotating block and the hanging block rotate relative to each other, thereby maintaining the angle of the hanger and the second screw. No change; push the moving arm to slide on the moving rail, and the moving arm then drives the fourth hydraulic motor, the second gear box, the second screw, the rotating sleeve, the rotating frame, the hanging rail, the hanging block, the rotating block, the hanger, and the second hand-cranked hoist to move, and the hollow jack then moves with the second hand-cranked hoist, and the height of the hollow jack relative to the steel strand is adjusted by the second hand-cranked hoist, so that the hollow jack can be put on the steel strand that needs to be tensioned. Push the hollow jack and then drive the hanger and the hanging block to slide on the hanging rail through the second hand-cranked hoist, and then put the hollow jack on the steel strand for subsequent tensioning construction. After the construction is completed, push the hollow jack back.

[0013] Preferably, the locking mechanism comprises a connecting frame, a sliding block, a pushing rod, a spring, a pushing box, a one-way wheel, a pull rope, a locking arm, a locking block, and a connecting plate. The connecting frame and the flat support plate are fixedly connected, the connecting frame is slidably connected to a pair of sliding blocks, the sliding block is slidably connected to the pushing rod, a spring is arranged on the outer side of the pushing rod, one end of the pushing rod is fixedly connected to the pushing box, the inner side of the pushing box is movably connected to the one-way wheel, a ratchet is arranged on the inner side of the one-way wheel, one side of the pushing box is fixedly connected to one end of the pull rope, the other end of the pull rope is fixedly connected to the locking block, the locking block is fixedly connected to the locking arm, one end of the locking arm is movably connected to the connecting plate, and the connecting plate and the flat support plate are fixedly connected;

[0014] The spring provides elastic support for the push box, and then pushes the one-way wheel toward the bridge member through the push box, so that the one-way wheel is close to the bridge member. When the flat support plate moves upward along the bridge member, the one-way wheel rotates. When the flat support plate moves downward along the bridge member, the ratchet in the one-way wheel prevents the one-way wheel from rotating, and the one-way wheel then moves upward relative to the connecting frame, thereby driving the push box to move, driving the push rod, spring, and sliding block to move, and then pulling the locking block and locking arm to rotate through the pull rope, and the locking block then sticks to the surface of the bridge member, and cooperates with other locking blocks to clamp the bridge member, and then provides support for the flat support plate through the locking block, locking arm, and connecting plate to prevent the flat support plate and gusset plate from continuing to move downward.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The first hydraulic motor provides power for the rotation of the first screw through the gear set, and the first screw drives the moving plate to move, and then drives the sliding plate to move through the rotating arm, and the sliding plate slides on the sliding sleeve plate, and then drives the gusset plate to move, and adjusts the spacing between the gusset plates, and at the same time adjusts the spacing between the flat support plates, and adaptive sliding occurs between the corner frame and the flat support frame, so as to make corresponding adjustments according to the width change of the bridge component, so as to avoid the tensioning platform and the bridge component being too close, causing the component to interfere with the movement of the tensioning platform, and avoid the tensioning platform and the bridge component being too far away, and avoid the tensioning platform and the bridge component. The gap is too large to increase the construction difficulty and the risk factor;

[0017] 2) The spring provides elastic support for the push box, and then the one-way wheel is pushed toward the bridge member through the push box, so that the one-way wheel is close to the bridge member. When the flat support plate moves upward along the bridge member, the one-way wheel rotates. When the flat support plate moves downward along the bridge member, the ratchet in the one-way wheel prevents the one-way wheel from rotating, and the one-way wheel then moves upward relative to the connecting frame, thereby driving the push box to move, driving the push rod, spring, and sliding block to move, and then pulling the locking block and locking arm to rotate through the pull rope, and the locking block then sticks to the surface of the bridge member, and cooperates with other locking blocks to clamp the bridge member, thereby ensuring that when the tensioning platform unexpectedly stalls and descends, the locking block, locking arm, and connecting plate can be used to provide support for the flat support plate in time to prevent the flat support plate and gusset plate from continuing to move downward, thereby ensuring the safety of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 This is a schematic diagram of the structure of a bridge tower tensioning platform for municipal bridge construction according to the present invention;

[0019] Attached Figure 2 This is a schematic diagram of the support platform structure in a bridge tower tensioning platform for municipal bridge construction of the present invention;

[0020] Attached Figure 3 Yes Figure 2 Enlarged view of point A in the middle;

[0021] Attached Figure 4 It is a structural schematic diagram of one side of a support platform in a bridge tower tensioning platform for municipal bridge construction of the present invention;

[0022] Attached Figure 5 Yes Figure 4 Enlarged view of point B in the middle;

[0023] Attached Figure 6 It is a schematic diagram of a hoisting mechanism in a bridge tower tensioning platform structure for municipal bridge construction according to the present invention;

[0024] Attached Figure 7 It is a schematic diagram of a locking mechanism in a bridge tower tensioning platform structure for municipal bridge construction according to the present invention;

[0025] In the figure: 1, bridge member; 2, steel strand; 3, support platform; 31, gusset plate; 32, flat support plate; 33, corner frame; 34, flat support frame; 35, sliding plate; 36, sliding sleeve plate; 37, rotating arm; 38, moving plate; 39, first lead screw; 301, gear set; 302, first hydraulic motor; 303, support frame; 11, first leg seat; 12, first adjusting gear; 13, second hydraulic motor; 14, first sliding frame; 15, second sliding frame; 16, second leg seat; 17, slide rail; 18, pulling plate; 19, limit slider; 101, first gear box; 102, third hydraulic motor; 3 04, supporting wheel; 305, first hand-cranked hoist; 306, fixed plate; 307, hanging plate; 4, lifting mechanism; 41, moving rail; 42, moving arm; 43, fourth hydraulic motor; 44, second gear box; 45, second lead screw; 46, rotating sleeve; 47, rotating frame; 48, hanging rail; 49, hanging block; 401, rotating block; 402, hanging frame; 403, second hand-cranked hoist; 5, locking mechanism; 51, connecting frame; 52, sliding block; 53, pushing rod; 54, spring; 55, pushing box; 56, one-way wheel; 57, pull rope; 58, locking arm; 59, locking block; 501, connecting plate. DETAILED DESCRIPTION

[0026] To facilitate the understanding of those skilled in the art, Figure 1-7 , the technical solution of the present invention is further specifically described.

[0027] A bridge tower tensioning platform for municipal bridge construction, comprising a bridge member 1, steel strands 2, a support platform 3, a hoisting mechanism 4, and a locking mechanism 5, wherein a plurality of steel strands 2 are arranged on the inner side of the bridge member 1, a support platform 3 is arranged on the outer side of the bridge member 1, a hoisting mechanism 4 is arranged on one side of the support platform 3, and a locking mechanism 5 is arranged on the other side of the support platform 3;

[0028] The support platform 3 includes a gusset plate 31, a flat support plate 32, a corner frame 33, a flat support frame 34, a sliding plate 35, a sliding sleeve plate 36, a rotating arm 37, a movable plate 38, a first screw 39, a gear set 301, a first hydraulic motor 302, a support frame 303, a support wheel 304, a first hand-cranked hoist 305, a fixed plate 306, and a hanging plate 307. The adjacent two sides of the gusset plate 31 are fixedly connected to a plurality of sliding plates 35, one end of the sliding plate 35 is movably connected to one end of the rotating arm 37, the other end of the rotating arm 37 is movably connected to the movable plate 38, the movable plate 38 and the first screw 39 are connected by threads, one end of the first screw 39 is connected to the output end of the first hydraulic motor 302 through the gear set 301, the first hydraulic motor 302 is fixedly connected through the motor bracket and the flat support plate 32, the sliding plate 35 are respectively connected with the sliding sleeve plate 36 for sliding movement, the sliding sleeve plate 36 is fixedly connected with the flat support plate 32, the flat support plate 32 is connected with the gusset plate 31 alternately end to end through the sliding insert plate 35 and the sliding sleeve plate 36 to form a closed loop, a support frame 303 is provided on one side of the sliding sleeve plate 36, a pair of support wheels 304 is provided on one side of the support frame 303, one side of the gusset plate 31 is fixedly connected with the corner frame 33, both ends of the corner frame 33 are connected with the flat support frame 34 for sliding movement, the flat support frame 34 is fixedly connected with the flat support plate 32, a pair of hanging plates 307 are provided on one side of the flat support plate 32, the hanging plate 307 is connected with one end of the first hand-cranked hoist 305, the model of the first hand-cranked hoist 305 is HSZ-5, which is purchased on the market or obtained by private customization; the other end of the first hand-cranked hoist 305 is connected with the fixed plate 306, and the fixed plate 306 is fixed on the bridge member 1;

[0029] The gusset plate 31 and the flat support plate 32 provide working support for the construction workers. The fixed plate 306 is fixed on the bridge component 1, and the first hand-cranked hoist 305 is used to hang the fixed plate 306 and the hanging plate 307 respectively, so as to hang the support platform 3 on the bridge component 1. According to the construction progress, the first hand-cranked hoist 305 is pulled to pull the support platform 3 upward as a whole. After moving up a certain distance, another set of fixed plates 306 is fixed on the bridge component 1, and the height is higher than the previous set of fixed plates 306. Then, another set of first hand-cranked hoists 305 are used to hang them, so as to replace the previous set of hand-cranked hoists to drive the support platform 3 to move upward; the first hydraulic motor 302 provides power for the rotation of the first screw 39 through the gear set 301. The first lead screw 39 then drives the moving plate 38 to move, and then drives the sliding plate 35 to move through the rotating arm 37. The sliding plate 35 is on the sliding plate 36, and then drives the gusset plate 31 to move, adjusts the spacing between the gusset plates 31, and at the same time adjusts the spacing between the flat support plates 32. Adaptive sliding occurs between the corner frame 33 and the flat support frame 34, so as to make corresponding adjustments according to the width change of the bridge component 1, so as to adapt to the bridge component 1 with a variable cross-section; the support wheel 304 contacts the bridge component 1, and then provides side support for the flat support plate 32 through the support frame 303 and the sliding plate 36. The support wheel 304 also provides guidance for the movement of the support platform 3 to prevent the flat support plate 32 and the gusset plate 31 from directly contacting the bridge component 1.

[0030] The support frame 303 includes a first leg seat 11, a first adjusting gear 12, a second hydraulic motor 13, a first sliding frame 14, a second sliding frame 15, a second leg seat 16, a slide rail 17, a pulling plate 18, a limiting slider 19, a first gear box 101, and a third hydraulic motor 102. The first leg seat 11 and the second leg seat 16 are both provided with teeth and grooves on both sides, and the teeth and the first adjusting gear 12 are meshed. The first adjusting gear 12 is connected to the output end of the second hydraulic motor 13. The first leg seat 11 is slidably connected to the first sliding frame 14, the second leg seat 16 is slidably connected to the second sliding frame 15, and the first sliding The frame 14 and the second sliding frame 15 are respectively connected to the second hydraulic motor 13, the second leg seat 16 is slidably connected to a pair of slide rails 17, the slide rails 17 are respectively fixedly connected to the sliding sleeve plate 36, one side of the second leg seat 16 is fixedly connected to the pulling plate 18, one side of the pulling plate 18 is provided with a plurality of tooth grooves, the pulling plate 18 is meshed with the second adjusting gear through the tooth grooves, the second adjusting gear is connected to the output end of the third hydraulic motor 102 through the first gear box 101, the third hydraulic motor 102 is connected to the limit slider 19, the limit slider 19 is slidably connected to the pulling plate 18, and the limit slider 19 is fixedly connected to the flat support plate 32;

[0031] The second hydraulic motor 13 provides power for the rotation of the first adjusting gear 12, and the first adjusting gear 12 then cooperates with the teeth and grooves on both sides of the first leg seat 11 and the second leg seat 16 respectively, and then drives the first sliding frame 14 and the second sliding frame 15 to slide on the first leg seat 11 and the second leg seat 16 respectively, and then adjusts the position of the support wheel 304 relative to the flat support plate 32. The third hydraulic motor 102 drives the second adjusting gear to rotate through the first gear box 101, and the second adjusting gear then cooperates with the teeth and groove on one side of the pulling plate 18, driving the pulling plate 18 to slide on the limiting slider 19, and then drives the second leg seat 16 to slide on the slide rail 17, and adjusts the distance between the second leg seat 16 and the first leg seat 11.

[0032] The hoisting mechanism 4 includes a moving rail 41, a moving arm 42, a fourth hydraulic motor 43, a second gear box 44, a second lead screw 45, a rotating sleeve 46, a rotating frame 47, a hanging rail 48, a hanging block 49, a rotating block 401, a hanger 402, and a second hand-cranked hoist 403. A second hand-cranked hoist 403 is arranged in the middle of the hanger 402. The second hand-cranked hoist 403 is of HSZ-5 model and is purchased from the market or customized privately. The hanger 402 is slidably connected to a pair of rotating blocks 401, the rotating block 401 is movably connected to the hanging block 49, and the hanging block 49 is slidably connected to the hanging rail 48. , the hanging rail 48 is fixedly connected to the rotating frame 47, the rotating frame 47 is fixedly connected to the rotating sleeve 46, the rotating sleeve 46 is movably connected to the moving arm 42, the moving arm 42 is slidably connected to a pair of moving rails 41, the moving rails 41 are fixedly connected to the flat support frame 34, a second gear box 44 is provided on one side of a group of moving arms 42, a fourth hydraulic motor 43 is provided on one side of the second gear box 44, an output end of the fourth hydraulic motor 43 is connected through the second gear box 44 and the second lead screw 45, the second lead screw 45 is movably connected to a group of moving arms 42, and the second lead screw 45 is connected to another group of moving arms 42 through a threaded connection;

[0033] The hollow jack is hoisted on the second hand-cranked hoist 403, and the fourth hydraulic motor 43 drives the second lead screw 45 to rotate through the second gear box 44, and the second lead screw 45 then drives the movable arm 42 to move, and adjusts the spacing between the movable arms 42. At the same time, the rotating sleeve 46 is rotated on the movable arm 42 to drive the rotating frame 47 to rotate, and the rotating frame 47 then drives another group of rotating frames 47 to rotate through the hanging rail 48, the hanging block 49, the rotating block 401, and the hanger 402. The rotating frame 47 then rotates away from the moving rail 41, thereby extending the moving range of the hanging block 49, the rotating block 401, and the hanger 402, thereby increasing the operating range of the hollow jack. When the rotating sleeve 46 and the movable frame rotate on the movable arm 42, the rotating block 401 and the hanging block 49 rotate relative to each other, thereby maintaining the hanger 402 and the first The angle of the second lead screw 45 does not change; the movable arm 42 is pushed to slide on the movable rail 41, and the movable arm 42 then drives the fourth hydraulic motor 43, the second gear box 44, the second lead screw 45, the rotating sleeve 46, the rotating frame 47, the hanging rail 48, the hanging block 49, the rotating block 401, the hanger 402, and the second hand-cranked hoist 403 to move, and the hollow jack then moves with the second hand-cranked hoist 403, and the height of the hollow jack relative to the steel strand 2 is adjusted by the second hand-cranked hoist 403, so that the hollow jack can be put on the steel strand 2 that needs to be tensioned. The hollow jack is pushed and then the hanger 402 and the hanging block 49 are driven to slide on the hanging rail 48 through the second hand-cranked hoist, and then the hollow jack is put on the steel strand 2 for subsequent tensioning construction. After the construction is completed, the hollow jack is pushed back.

[0034] The locking mechanism 5 includes a connecting frame 51, a sliding block 52, a pushing rod 53, a spring 54, a pushing box 55, a one-way wheel 56, a pull rope 57, a locking arm 58, a locking block 59, and a connecting plate 501. The connecting frame 51 is fixedly connected to the flat support plate 32, the connecting frame 51 is slidably connected to a pair of sliding blocks 52, the sliding block 52 is slidably connected to the pushing rod 53, a spring 54 is arranged on the outer side of the pushing rod 53, one end of the pushing rod 53 is fixedly connected to the pushing box 55, the inner side of the pushing box 55 is movably connected to the one-way wheel 56, a ratchet is arranged on the inner side of the one-way wheel 56, one side of the pushing box 55 is fixedly connected to one end of the pull rope 57, the other end of the pull rope 57 is fixedly connected to the locking block 59, the locking block 59 is fixedly connected to the locking arm 58, one end of the locking arm 58 is movably connected to the connecting plate 501, and the connecting plate 501 and the flat support plate 32 are fixedly connected;

[0035] The spring 54 provides elastic support for the push box 55, and then the one-way wheel 56 is pushed toward the bridge component 1 through the push box 55, so that the one-way wheel 56 is close to the bridge component 1, and when the flat support plate 32 moves upward along the bridge component 1, the one-way wheel 56 rotates. When the flat support plate 32 moves downward along the bridge component 1, the ratchet inside the one-way wheel 56 prevents the one-way wheel 56 from rotating, and the one-way wheel 56 then moves upward relative to the connecting frame 51, thereby driving the push box 55 to move, driving the push rod 53, the spring 54, and the sliding block 52 to move, and then pulling the locking block 59 and the locking arm 58 to rotate through the pull rope 57, and the locking block 59 then sticks to the surface of the bridge component 1, and cooperates with other locking blocks 59 to clamp the bridge component 1, and then the locking block 59, the locking arm 58, and the connecting plate 501 provide support for the flat support plate 32 to prevent the flat support plate 32 and the gusset plate 31 from continuing to move downward.

[0036] A construction method of a bridge tower tensioning platform for municipal bridge construction is as follows:

[0037] Step 1): the support platform is connected to the bridge member; the fixing plate is fixed to the bridge member, and is respectively connected to the fixing plate and the hanging plate by a first hand-cranked hoist;

[0038] Step 2): the support platform moves on the bridge member; the first hand-cranked hoist is pulled to pull the support platform upward for a certain distance as a whole, and then another set of fixed plates is fixed on the bridge member, and the height is higher than the previous set of fixed plates, and then another set of first hand-cranked hoists are respectively hung with the fixed plates and the hanging plates, replacing the previous set of hand-cranked hoists to drive the support platform to move upward, the support wheels are in contact with the bridge member, the support wheels, the support frame, and the sliding sleeve plate provide side support for the flat support plate, and the movement of the support platform drives the support wheels to move on the surface of the bridge member;

[0039] Step 3): The support platform is adapted to the variable cross-section of the bridge member; the first hydraulic motor provides power for the rotation of the first screw through the gear set, the first screw drives the moving plate to move, the rotating arm drives the sliding plate to move, the sliding plate slides on the sliding sleeve plate, drives the gusset plate to move, adjusts the spacing between the gusset plates, adjusts the spacing between the flat support plates, and adaptively slides between the corner frame and the flat support frame;

[0040] Step 4): tensioning operation; hoist the hollow jack onto the second hand-cranked hoist, the fourth hydraulic motor drives the second lead screw to rotate through the second gear box, the second lead screw then drives the moving arm to move, adjust the spacing between the moving arms, push the moving arm to slide on the moving rail, the moving arm then drives the fourth hydraulic motor, the second gear box, the second lead screw, the rotating sleeve, the rotating frame, the hanging rail, the hanging block, the rotating block, the hanging frame, and the second hand-cranked hoist to move, the hollow jack then follows the second hand-cranked hoist to move, through the second hand-cranked hoist Use the reed to adjust the height of the hollow jack relative to the steel strand so that the hollow jack can be put on the steel strand that needs to be tensioned. Push the hollow jack and then drive the hanger and the hanging block to slide on the hanging rail through the second hand winch, and then put the hollow jack on the steel strand, and put the anchor plate on the steel strand, put the clips on the steel strand respectively, and fix the clips on the anchor plate. At the same time, put the anchor plate against the output end of the hollow jack, and drive the anchor plate, clip and steel strand to move through the hollow jack to tension the steel strand.

[0041] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A bridge tower tensioning platform for municipal bridge construction, comprising a bridge member, a steel strand, a support platform, a hoisting mechanism, and a locking mechanism, characterized in that A plurality of steel strands are arranged on the inner side of the bridge member, a support platform is arranged on the outer side of the bridge member, a hoisting mechanism is arranged on one side of the support platform, and a locking mechanism is arranged on the other side of the support platform; The support platform includes an angle gusset plate, a flat gusset plate, a corner frame, a flat gusset, a sliding plate, a sliding sleeve plate, a rotating arm, a movable plate, a first screw, a gear set, a first hydraulic motor, a support frame, a support wheel, a first hand-cranked hoist, a fixed plate, and a hanging plate. The adjacent two sides of the angle gusset plate are fixedly connected to a plurality of sliding plates, one end of the sliding plate is movably connected to one end of the rotating arm, the other end of the rotating arm is movably connected to the movable plate, the movable plate is connected to the first screw by a thread, one end of the first screw is connected to the output end of the first hydraulic motor by a gear set, and the first hydraulic motor is connected to the motor bracket by a motor bracket. The flat support plate is fixedly connected, the sliding plug plate is slidably connected to the sliding sleeve plate respectively, the sliding sleeve plate and the flat support plate are fixedly connected, the flat support plate is alternately connected end to end with the gusset plate through the sliding plug plate and the sliding sleeve plate to form a closed loop, a support frame is provided on one side of the sliding sleeve plate, a pair of supporting wheels is provided on one side of the support frame, one side of the gusset plate is fixedly connected to the corner frame, both ends of the corner frame are slidably connected to the flat support frame, the flat support frame is fixedly connected to the flat support plate, a pair of hanging plates are provided on one side of the flat support plate, the hanging plate is connected to one end of the first hand-cranked hoist, the other end of the first hand-cranked hoist is connected to the fixed plate, and the fixed plate is fixed on the bridge member; The lifting mechanism includes a movable rail, a movable arm, a fourth hydraulic motor, a second gear box, a second screw, a rotating sleeve, a rotating frame, a hanging rail, a hanging block, a rotating block, a hanger, and a second hand-cranked hoist. A second hand-cranked hoist is provided in the middle of the hanger. The hanger is slidably connected to a pair of rotating blocks, the rotating block and the hanging block are movably connected, the hanging block and the hanging rail are slidably connected, the hanging rail and the rotating frame are fixedly connected, the rotating frame and the rotating sleeve are fixedly connected, the rotating sleeve and the movable arm are movably connected, the movable arm and a pair of movable rails are slidably connected, the movable rail and the flat support frame are fixedly connected, a second gear box is provided on one side of a group of movable arms, a fourth hydraulic motor is provided on one side of the second gear box, an output end of the fourth hydraulic motor is connected through the second gear box and the second screw, the second screw is movably connected to a group of movable arms, and the second screw is connected to another group of movable arms by a threaded connection.

2. A bridge tower tensioning platform for municipal bridge construction according to claim 1, characterized in that The support frame includes a first leg seat, a first adjusting gear, a second hydraulic motor, a first sliding frame, a second sliding frame, a second leg seat, a slide rail, a pulling plate, a limiting slider, a first gear box, and a third hydraulic motor. The first leg seat and the second leg seat are both provided with teeth grooves on both sides, the teeth grooves are meshed with the first adjusting gear, the first adjusting gear is connected to the output end of the second hydraulic motor, the first leg seat is slidably connected to the first sliding frame, the second leg seat and the second sliding frame are slidably connected, the first sliding frame and the second sliding frame are respectively connected to the second hydraulic motor, the second leg seat is slidably connected to a pair of slide rails, the slide rails are respectively fixedly connected to the sliding sleeve plates, one side of the second leg seat is fixedly connected to the pulling plate, one side of the pulling plate is provided with a plurality of teeth grooves, the pulling plate is meshed with the teeth groove and the second adjusting gear, the second adjusting gear is connected to the output end of the third hydraulic motor through the first gear box, the third hydraulic motor is connected to the limiting slider, the limiting slider is slidably connected to the pulling plate, and the limiting slider is fixedly connected to the flat support plate.

3. A bridge tower tensioning platform for municipal bridge construction according to claim 1, characterized in that The locking mechanism includes a connecting frame, a sliding block, a pushing rod, a spring, a pushing box, a one-way wheel, a pull rope, a locking arm, a locking block, and a connecting plate. The connecting frame and the flat support plate are fixedly connected, the connecting frame and a pair of sliding blocks are slidably connected, the sliding block and the pushing rod are slidably connected, a spring is provided on the outside of the pushing rod, one end of the pushing rod is fixedly connected to the pushing box, the inside of the pushing box is movably connected to the one-way wheel, a ratchet is provided on the inside of the one-way wheel, one side of the pushing box is fixedly connected to one end of the pull rope, the other end of the pull rope is fixedly connected to the locking block, the locking block is fixedly connected to the locking arm, one end of the locking arm is movably connected to the connecting plate, and the connecting plate is fixedly connected to the flat support plate.

4. The construction method of a bridge tower tensioning platform for municipal bridge construction according to claim 1, characterized in that: Step 1): the support platform is connected to the bridge member; the fixing plate is fixed to the bridge member, and is respectively connected to the fixing plate and the hanging plate by a first hand-cranked hoist; Step 2): the support platform moves on the bridge member; the first hand-cranked hoist is pulled to pull the support platform upward for a certain distance as a whole, and then another set of fixed plates is fixed on the bridge member, and the height is higher than the previous set of fixed plates, and then another set of first hand-cranked hoists are respectively hung with the fixed plates and the hanging plates, replacing the previous set of hand-cranked hoists to drive the support platform to move upward, the support wheels are in contact with the bridge member, the support wheels, the support frame, and the sliding sleeve plate provide side support for the flat support plate, and the movement of the support platform drives the support wheels to move on the surface of the bridge member; Step 3): The support platform is adapted to the variable cross-section of the bridge member; the first hydraulic motor provides power for the rotation of the first screw through the gear set, the first screw drives the moving plate to move, the rotating arm drives the sliding plate to move, the sliding plate slides on the sliding sleeve plate, drives the gusset plate to move, adjusts the spacing between the gusset plates, adjusts the spacing between the flat support plates, and adaptively slides between the corner frame and the flat support frame; Step 4): tensioning operation; hoist the hollow jack onto the second hand-cranked hoist, the fourth hydraulic motor drives the second lead screw to rotate through the second gear box, the second lead screw then drives the moving arm to move, adjust the spacing between the moving arms, push the moving arm to slide on the moving rail, the moving arm then drives the fourth hydraulic motor, the second gear box, the second lead screw, the rotating sleeve, the rotating frame, the hanging rail, the hanging block, the rotating block, the hanging frame, and the second hand-cranked hoist to move, the hollow jack then follows the second hand-cranked hoist to move, through the second hand-cranked hoist Use the reed to adjust the height of the hollow jack relative to the steel strand so that the hollow jack can be put on the steel strand that needs to be tensioned. Push the hollow jack and then drive the hanger and the hanging block to slide on the hanging rail through the second hand winch, and then put the hollow jack on the steel strand, and put the anchor plate on the steel strand, put the clips on the steel strand respectively, and fix the clips on the anchor plate. At the same time, put the anchor plate against the output end of the hollow jack, and drive the anchor plate, clip and steel strand to move through the hollow jack to tension the steel strand.

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