Urban rail transit engineering bridge support overhauling device and construction technology thereof

Abstract

The application relates to the technical field of bridge maintenance, in particular to a city rail transit engineering bridge support maintenance device, which comprises a bridge column, a limiting mechanism is fixedly arranged on the side of the bridge column, a lifting mechanism is movably arranged on the periphery of the limiting mechanism, the limiting mechanism comprises a limiting frame, two winding rollers are rotationally connected in the limiting frame, the two winding rollers are arranged in parallel, two upper and lower tensioning hoops are fixedly connected to the outer walls of the two winding rollers. The limiting mechanism is arranged to avoid loosening of the limiting frame, improve the stability and safety during construction, the winding length of the tensioning hoops can be controlled, the limiting frame can be fixed on the surfaces of bridge columns with different thicknesses, the use range of the device is greatly improved, the use flexibility of the device is expanded, the lifting mechanism is arranged, local self-locking effect is achieved, the situation that the lifting platform falls is avoided, and the safety of maintenance personnel during construction is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge maintenance, in particular to a city rail transit engineering bridge support maintenance device and a construction process thereof. BACKGROUND

[0002] According to the authorized announcement number: CN 216238112 U discloses a kind of city rail transit engineering bridge support maintenance special tool, including bridge pier column, bridge pier column outside is equipped with two ring sleeves, ring sleeve top is fixed with base, ring sleeve top is screwed with platform, platform bottom is screwed with reinforcing rod, ring sleeve inside is screwed with climbing assembly relative to the position of platform bottom, two support seats are screwed with front and rear symmetrical structure relative to the position of climbing assembly outside, support seat middle part is rotatably connected with rolling wheel.The utility model discloses through being added rolling wheel in ring sleeve, the frictional resistance between the device and bridge pier column is reduced by rolling wheel, so that ring sleeve is more labor-saving when being moved outside bridge pier column, the lifting efficiency of device is greatly improved;

[0003] After using the above-mentioned city rail transit engineering bridge support maintenance special tool, it is found that the specifications of the two ring sleeves of the tool cannot be adjusted, so that the above-mentioned maintenance special tool can only be installed on bridge pier columns of a specified size, resulting in that the above-mentioned existing maintenance special tool has strong use limitations and narrow adaptability, and the above-mentioned city rail transit engineering bridge support maintenance special tool can only adjust the lifting by the rolling wheel, cannot avoid the slipping problem between the rolling wheel and the bridge pier column, resulting in that the lifting efficiency is not high, and there is also the risk of falling. SUMMARY

[0004] Therefore, the present application provides a city rail transit engineering bridge support maintenance device and a construction process thereof to solve the problems of the existing city rail transit engineering bridge support maintenance special tool, such as strong use limitations, narrow adaptability, low lifting efficiency and the risk of falling.

[0005] The present application provides the following technical solutions: a city rail transit engineering bridge support maintenance device, including a bridge column, a limiting mechanism is fixedly arranged on the side of the bridge column, and a lifting mechanism is movably arranged on the periphery of the limiting mechanism.

[0006] The limiting mechanism includes a limiting frame, two winding rollers are rotatably connected in the limiting frame, the two winding rollers are arranged in parallel, two upper and lower tension clamps are fixedly connected to the outer wall of each winding roller, a ring buckle is fixedly connected to the end of each tension clamp, the tension clamp is sleeved on the outer wall of the bridge column, and the end of the tension clamp is fixed by the ring buckle.

[0007] The lifting mechanism comprises two I-shaped guide rails, the two I-shaped guide rails are arranged in parallel, and the two I-shaped guide rails are fixedly connected to one side of the limiting frame away from the bridge column, two I-shaped sliding blocks are slidingly connected to the periphery of the two I-shaped guide rails, a lifting platform is fixedly connected to the outer side surfaces of the two I-shaped sliding blocks, the lifting platform is located at the periphery of the bridge column, an adjusting plate is fixedly connected to the top of the lifting platform, the adjusting plate is located on one side of the limiting frame, a rotating shaft is rotatably connected to the inside of the adjusting plate, a walking gear is fixedly connected to the end of the rotating shaft, a walking rack is engaged with the periphery of the walking gear, and the walking rack is fixedly connected to the outer side surface of the limiting frame and located between the two I-shaped guide rails.

[0008] As a preferred scheme of the present application, the bottom wall of the limiting frame is fixedly connected with a double-shaft motor, the output shaft end of the double-shaft motor is fixedly connected with two torsion rods through a shaft coupling, two winding worms are fixedly connected to the outer walls of the two torsion rods, the spiral directions of the two winding worms are opposite, and two winding gears are engaged with the side edges of the two winding worms, and the two winding gears are fixedly connected to the outer walls of the two winding rollers.

[0009] As a preferred scheme of the present application, the two winding rollers are rotatably connected to the top wall and the bottom wall of the limiting frame through bearings.

[0010] As a preferred scheme of the present application, two upwardly and downwardly distributed winding grooves are formed through the two side surfaces of the limiting frame, the two winding grooves are located at the periphery of the two tensioning hoops, and two upwardly and downwardly distributed supporting wheels are fixedly connected to the two side surfaces of the limiting frame, and the outer walls of the two supporting wheels abut against the inner side surfaces of the tensioning hoops.

[0011] As a preferred scheme of the present application, two coupling slots are formed in the bottom of the limiting frame, and two coupling blocks are fixedly connected to the top of the limiting frame, and the positions and specifications of the two coupling blocks are matched with those of the two coupling slots.

[0012] As a preferred scheme of the present application, an alternating-current motor is fixedly connected to the top of the lifting platform, a driving pulley is fixedly connected to the output shaft end of the alternating-current motor, a power belt is sleeved in the groove of the driving pulley, a driven pulley is fixedly connected to one end of the power belt away from the driving pulley, an adjusting rod is fixedly connected to the inside of the driven pulley, the adjusting rod is rotatably connected to one side of the adjusting plate through two rotating supporting frames, an adjusting worm is fixedly connected to the outer wall of the adjusting rod, an adjusting worm gear is engaged with the bottom of the adjusting worm, and the adjusting worm gear is fixedly connected to one end of the rotating shaft away from the walking gear.

[0013] As a preferred scheme of the present application, a torsion handle is fixedly connected to the end of the adjusting rod, and the torsion handle is located at the end of the adjusting rod away from the driven pulley.

[0014] As a preferred scheme of the present application, a protective frame is fixedly connected to the top edge of the lifting platform.

[0015] As a preferred scheme of the present application, a support block is fixedly connected to the bottom of the limiting frame, and a plurality of walking rollers are fixedly connected to the bottom of the lifting platform.

[0016] The construction process of the bridge support maintenance device for urban rail transit engineering comprises the following steps:

[0017] S1, first, the limiting frame is placed on the side of the bridge column, and the support block is used to support and fix the limiting frame, so as to improve the stability of the bottom of the limiting frame; then, the ends of the tensioning hoops are connected by the ring buckle, so that the ends of the two tensioning hoops of the same height are connected by the ring buckle; then, the control circuit of the double-shaft motor is started, so that after power input, the output shaft of the double-shaft motor drives the two torsion rods to rotate, so that the two winding worms fixed on the outer walls of the two torsion rods rotate synchronously, further driving the two winding worms to rotate, and since the two winding worms are reversely spirally arranged, the two winding worms rotate reversely, and directly drive the two winding rollers fixedly connected with the two winding worms to rotate reversely, so as to wind the tensioning hoops, so that the tensioning hoops tightly wrap the outer wall of the bridge column, further fixing the limiting frame on one side of the limiting frame, avoiding loosening of the limiting frame, and improving the stability and safety during construction;

[0018] S2, when the limiting frame is fixed, the construction worker can stand on the top of the lifting platform, place the maintenance tools needed for use on the top of the lifting platform, start the control circuit of the alternating current motor, so that under the driving of electricity, the output shaft of the alternating current motor drives the driving pulley to rotate, further drives the driven pulley to rotate under the transmission of the power belt, further drives the adjusting rod fixedly connected with the driven pulley to rotate, so that the adjusting worm fixedly connected with the adjusting rod rotates, further drives the adjusting worm to rotate, further drives the adjusting worm to rotate, further drives the adjusting worm to rotate, and drives the walking gear to rotate, so that the walking gear drives the lifting platform to move under the meshing relationship with the walking rack, and the lifting platform is slidably connected with the I-shaped guide rail through the two I-shaped sliding blocks, further ensuring the accuracy and stability of the upward and downward sliding of the lifting platform, and since the driving of the adjusting worm on the adjusting worm is irreversible, the adjusting worm can be self-locked, so as to avoid the situation that the lifting platform falls, greatly improving the safety of the maintenance worker during construction.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1、The present application, through the output shaft of the double-shaft motor in the limiting mechanism drives two torsion rods to rotate, makes two winding worms fixed on the outer wall of the two torsion rods rotate synchronously, further drives two winding worms gears meshing with the two winding worms to rotate, and since the two winding worms are reversely spirally arranged, the two winding worms gears rotate reversely, and directly drive two winding rollers fixedly connected with the two winding worms gears to rotate reversely, wind the tensioning hoop, make the tensioning hoop tightly wrap on the outer wall of the bridge column, further fix the limiting frame on one side of the limiting frame, avoid the loosening of the limiting frame, and improve the stability and safety during construction.

[0021] 2、The present application, through the output shaft of the alternating current motor in the lifting mechanism drives the driving pulley to rotate, further drives the driven pulley to rotate under the transmission action of the power belt, further drives the adjusting rod fixedly connected with the driven pulley to rotate, makes the adjusting worm fixedly connected with the adjusting rod rotate, further drives the adjusting worm gear meshing with the adjusting worm to rotate, further makes the rotating shaft fixedly connected with the adjusting worm gear rotate, and drives the walking gear to rotate, so that the walking gear drives the lifting platform to move under the meshing relationship with the walking rack, and the lifting platform is slidably connected with the I-shaped guide rail through the two I-shaped sliding blocks, further ensures the accuracy and stability of the lifting platform sliding up and down, and since the driving of the adjusting worm on the adjusting worm gear is irreversible, the adjusting worm gear can rotate the adjusting worm to be self-locked, thereby avoiding the situation that the lifting platform falls, and greatly improving the safety of the maintenance personnel during construction.

[0022] 3、The present application, by controlling the winding length of the tensioning hoop by the double-shaft motor of the limiting mechanism, the limiting frame can be fixed on the surface of the bridge column with different thicknesses, greatly improving the use range of the device and expanding the use flexibility of the device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the structure schematic view of the use state of the present application;

[0024] Figure 2 is the structure schematic view of the bottom perspective of the present application;

[0025] Figure 3 is the structure schematic view of the top perspective of the present application;

[0026] Figure 4 is the structure schematic view of the limiting mechanism of the present application;

[0027] Figure 5 is the structure schematic view of the cross section of the limiting mechanism of the present application;

[0028] Figure 6 is Figure 5 is the local enlarged structure schematic view of the present application A;

[0029] Figure 7 Structure diagram of the lifting mechanism of the present application;

[0030] Figure 8 Structure diagram of the lifting mechanism of the present application;

[0031] In the figure: 1, bridge column; 2, limiting mechanism; 3, lifting mechanism; 4, walking roller; 5, support block; 201, limiting frame; 202, winding roller; 203, tensioning hoop; 204, ring buckle; 205, double-shaft motor; 206, torsion rod; 207, winding worm; 208, winding worm wheel; 209, winding groove; 2010, support wheel; 2011, coupling slot; 2012, coupling block; 301, I-shaped guide rail; 302, I-shaped sliding block; 303, lifting platform; 304, adjusting plate; 305, rotating shaft; 306, walking gear; 307, walking rack; 308, AC motor; 309, driving pulley; 3010, power belt; 3011, driven pulley; 3012, adjusting rod; 3013, adjusting worm; 3014, adjusting worm wheel; 3015, torsion handle; 3016, guard frame. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0033] Embodiment: Please refer to Figures 1-8 The urban rail transit engineering bridge support maintenance device shown in the figure comprises a bridge column 1, a limiting mechanism 2 is fixedly arranged on the side of the bridge column 1, and a lifting mechanism 3 is movably arranged on the periphery of the limiting mechanism 2;

[0034] The limiting mechanism 2 comprises a limiting frame 201, two winding rollers 202 are rotationally connected inside the limiting frame 201, the two winding rollers 202 are arranged in parallel, two upper and lower distributed tensioning hoops 203 are fixedly connected to the outer walls of the two winding rollers 202, the end portions of the tensioning hoops 203 are fixedly connected with ring buckles 204, the tensioning hoops 203 are sleeved on the outer wall of the bridge column 1, the end portions of the tensioning hoops 203 are clamped and fixed through the ring buckles 204, a double-shaft motor 205 is fixedly connected to the bottom wall of the limiting frame 201, two torsion rods 206 are fixedly connected to the output shaft end portions of the double-shaft motor 205 through a shaft coupling, two winding worms 207 are fixedly connected to the outer walls of the two torsion rods 206, the screw directions of the two winding worms 207 are opposite, two winding worms 208 are engaged on the side edges of the two winding worms 207, and the two winding worms 208 are fixedly connected to the outer walls of the two winding rollers 202;

[0035] The end portions of the two tensioning hoops 203 of the same height are connected through the ring buckles 204, the two end-to-end tensioning hoops 203 are further sleeved on the outside of the bridge column 1, the output shaft of the double-shaft motor 205 is used to drive the two torsion rods 206 to rotate, the two winding worms 207 fixedly connected to the outer walls of the two torsion rods 206 are synchronously rotated, the two winding worms 208 engaged with the two winding worms 207 are further rotated, the two winding rollers 202 fixedly connected with the two winding worms 208 are reversely rotated due to the opposite screw directions of the two winding worms 207, and the two winding rollers 202 are reversely rotated to wind the tensioning hoops 203, so that the tensioning hoops 203 are tightly wrapped on the outer wall of the bridge column 1, the limiting frame 201 is further fixed on one side of the limiting frame 201, the limiting frame 201 is prevented from loosening, the stability and safety during construction are improved, the winding length of the tensioning hoops 203 can be controlled, the limiting frame 201 can be fixed on the surfaces of bridge columns 1 with different thicknesses, and the use range of the device is greatly improved, and the use flexibility of the device is expanded.

[0036] The lifting mechanism 3 comprises two I-shaped guide rails 301 arranged in parallel, which are fixedly connected to one side of the limiting frame 201 away from the bridge column 1. Two I-shaped sliding blocks 302 are slidingly connected to the periphery of the two I-shaped guide rails 301. An lifting platform 303 is fixedly connected to the outer side of the two I-shaped sliding blocks 302. The lifting platform 303 is located outside the bridge column 1. An adjusting plate 304 is fixedly connected to the top of the lifting platform 303 and located on one side of the limiting frame 201. A rotating shaft 305 is rotatably connected to the inside of the adjusting plate 304. A walking gear 306 is fixedly connected to the end of the rotating shaft 305. A walking rack 307 is engaged with the outside of the walking gear 306 and fixedly connected to the outer side of the limiting frame 201. The walking rack 307 is located between the two I-shaped guide rails 301. An alternating current motor 308 is fixedly connected to the top of the lifting platform 303. A driving pulley 309 is fixedly connected to the output shaft end of the alternating current motor 308. A power belt 3010 is sleeved in the wheel groove of the driving pulley 309. A driven pulley 3011 is fixedly connected to the inside of the power belt 3010. An adjusting rod 3012 is fixedly connected to the inside of the driven pulley 3011. The adjusting rod 3012 is rotatably connected to one side of the adjusting plate 304 through two rotating supports. An adjusting worm 3013 is fixedly connected to the outer wall of the adjusting rod 3012. An adjusting worm wheel 3014 is engaged with the bottom of the adjusting worm 3013 and fixedly connected to the end of the rotating shaft 305 away from the walking gear 306.

[0037] When the limiting frame 201 is fixed, the construction worker can stand on the top of the lifting platform 303 and place the maintenance tools needed on the top of the lifting platform 303. Then the control circuit of the alternating current motor 308 is started. Under the action of electric power, the output shaft of the alternating current motor 308 drives the driving pulley 309 to rotate, further drives the driven pulley 3011 to rotate under the transmission action of the power belt 3010, further drives the adjusting rod 3012 fixedly connected to the driven pulley 3011 to rotate, drives the adjusting worm 3013 fixedly connected to the adjusting rod 3012 to rotate, further drives the adjusting worm wheel 3014 engaged with the adjusting worm 3013 to rotate, further drives the rotating shaft 305 fixedly connected to the adjusting worm wheel 3014 to rotate, and drives the walking gear 306 to rotate, so that the walking gear 306 drives the lifting platform 303 to move under the engagement relationship with the walking rack 307. The lifting platform 303 is slidingly connected to the I-shaped guide rails 301 through the two I-shaped sliding blocks 302, which further ensures the accuracy and stability of the upward and downward sliding of the lifting platform 303. At the same time, since the driving of the adjusting worm 3013 to the adjusting worm wheel 3014 is irreversible, the adjusting worm wheel 3014 can realize the self-locking effect of the adjusting worm 3013, thereby avoiding the situation that the lifting platform 303 falls, greatly improving the safety of the maintenance worker during the construction process.

[0038] In this embodiment, referring to Figure 5 As shown in the figure, the two winding rollers 202 are rotatably connected with the top wall and the bottom wall of the limiting frame 201 through bearings;

[0039] By setting the bearings to limit the rotation of the two winding rollers 202 within the limiting frame 201, the position of the two winding rollers 202 is fixed while ensuring good rotation of the two winding rollers 202, thereby providing good winding and tensioning effect on the tensioning hoop 203.

[0040] In this embodiment, referring to Figure 4 As shown in the figure, the two side walls of the limiting frame 201 are provided with two winding grooves 209 distributed vertically, and the two winding grooves 209 are located outside the two tensioning hoops 203. The two side walls of the limiting frame 201 are fixedly connected with two support wheels 2010 distributed vertically, and the outer wall of the two support wheels 2010 abuts against the inner side wall of the tensioning hoop 203.

[0041] By setting the winding grooves 209, the winding of the tensioning hoop 203 is prevented from being interfered by the side plate of the limiting frame 201, ensuring that the tensioning hoop 203 has good winding and stretching properties. The support wheels 2010 provided at the same time play a supporting role for the tensioning hoop 203, avoiding direct contact between the tensioning hoop 203 and the limiting frame 201 to generate friction and cause loss of kinetic energy, further ensuring the winding effect of the tensioning hoop 203.

[0042] In this embodiment, referring to Figure 4 As shown in the figure, the bottom of the limiting frame 201 is provided with two coupling slots 2011, and the top of the limiting frame 201 is fixedly connected with two coupling blocks 2012. The position and size of the two coupling blocks 2012 are adapted to the position and size of the two coupling slots 2011.

[0043] By setting the coupling slots 2011 and the coupling blocks 2012, the two limiting frames 201 adjacent to each other can be positioned and connected by the coupling of the coupling slots 2011 and the coupling blocks 2012. Therefore, in actual use, the height of the limiting frame 201 can be stacked according to the actual height of the bridge column 1, so as to adapt to bridge columns 1 of different heights.

[0044] In this embodiment, referring to Figure 8 As shown in the figure, the end of the adjusting rod 3012 is fixedly connected with a twisting handle 3015, and the twisting handle 3015 is located at the end of the adjusting rod 3012 away from the driven pulley 3011.

[0045] By setting the twist handle 3015, so that in the case of power failure or other power outage, when the AC motor 308 can not continue to use, the maintenance personnel can drive the adjusting rod 3012 to rotate by manually rotating the twist handle 3015, so that the adjusting worm 3013 drives the adjusting worm gear 3014 to rotate, drives the rotating shaft 305 and the walking gear 306 to rotate, adjusts the height of the lifting platform 303, and lowers the lifting platform 303 to the lowest height, to avoid being trapped on the top of the lifting platform 303 and unable to fall to the ground due to long power failure.

[0046] In this embodiment, referring to Figure 7 As shown in the figure, the top edge of the lifting platform 303 is fixedly connected with a guard frame 3016;

[0047] By setting the guard frame 3016, the function of safely protecting the periphery of the lifting platform 303 is achieved, so that the safety accident of falling from high altitude during maintenance is effectively avoided.

[0048] In this embodiment, referring to Figures 1-3 As shown in the figure, the bottom of the limiting frame 201 is fixedly connected with a support block 5, and the bottom of the lifting platform 303 is fixedly connected with a plurality of walking rollers 4;

[0049] By setting the support block 5, the function of supporting the bottom of the limiting frame 201 is achieved, and the stability of the bottom of the limiting frame 201 is improved. After the maintenance is completed, the lifting platform 303 can be lowered to the lowest height position, at this time the plurality of support blocks 5 are in contact with the ground, and the limiting frame 201 is lifted upward by a proper height, so that the device can be moved through the walking property of the plurality of support blocks 5, greatly improving the use convenience of the device.

[0050] The construction process of the urban rail transit engineering bridge support maintenance device comprises the following use steps:

[0051] S1. First, place the limiting frame 201 on the side of the bridge column 1, and use the support block 5 to support and fix the limiting frame 201 to improve the stability of the bottom of the limiting frame 201. Then, use the ring buckle 204 to snap the ends of the tension hoop 203 together, so that the ends of the two tension hoops 203 of the same height are connected by the ring buckle 204. Then, start the control circuit of the dual-axis motor 205, so that after the power input, the output shaft of the dual-axis motor 205 drives the two torsion bars 206 to rotate, so that the two winding worms 207 fixed on the outer wall of the two torsion bars 206 rotate together. The step rotation further drives the two winding worm wheels 208 meshing with the two winding worms 207 to rotate. Since the two winding worms 207 are set with opposite spirals, the two winding worm wheels 208 rotate in opposite directions, and directly drive the two winding rollers 202 fixedly connected to the two winding worm wheels 208 to rotate in opposite directions, winding up the tension hoop 203, so that the tension hoop 203 tightly wraps around the outer wall of the bridge column 1, further fixing the limit frame 201 to one side of the limit frame 201, preventing the limit frame 201 from loosening, and improving the stability and safety during construction.

[0052] S2, After the limit frame 201 is fixed, the construction worker can stand on top of the lifting platform 303, place the necessary maintenance tools on top of the lifting platform 303, and start the control circuit of the AC motor 308. Under electric drive, the output shaft of the AC motor 308 drives the drive pulley 309 to rotate, which in turn drives the driven pulley 3011 to rotate under the transmission action of the power belt 3010. This further drives the adjusting rod 3012, which is fixedly connected to the driven pulley 3011, to rotate. This causes the adjusting worm gear 3013, which is fixedly connected to the adjusting rod 3012, to rotate, which in turn drives the adjusting worm wheel 3014, which meshes with the adjusting worm gear 3013, to rotate. This further drives the adjusting worm wheel 3014, which meshes with the adjusting worm gear 3013, to rotate. The rotating shaft 305, which is fixedly connected to the worm gear 3014, rotates and drives the traveling gear 306 to rotate. Under the meshing relationship between the traveling gear 306 and the traveling rack 307, the traveling gear 306 drives the lifting platform 303 to move. The lifting platform 303 is slidably connected to the I-shaped guide rail 301 through two I-shaped sliders 302, which further ensures the accuracy and stability of the lifting platform 303 sliding up and down. At the same time, since the driving of the adjusting worm gear 3013 to the adjusting worm gear 3014 is irreversible, the adjusting worm gear 3014 can achieve a self-locking effect on the adjusting worm gear 3013, thereby preventing the lifting platform 303 from falling and greatly improving the safety of maintenance personnel during construction.

[0053] When the bridge bearing maintenance device of this urban rail transit project is working, the limiting frame 201 is first placed on the side of the bridge column 1, and the supporting block 5 is used to support and fix the limiting frame 201 to improve the stability of the bottom of the limiting frame 201. Then, the end of the tension hoop 203 is snapped together with the ring buckle 204 so that the ends of the two tension hoops 203 of the same height are connected by the ring buckle 204. Then, the control circuit of the dual-shaft motor 205 is started so that after the power input, the output shaft of the dual-shaft motor 205 drives the two torsion bars 206 to rotate, so that the two winding worms 207 fixed on the outer wall of the two torsion bars 206 rotate synchronously.

[0054] This further drives the two winding worm wheels 208 that mesh with the two winding worms 207 to rotate. Since the two winding worms 207 are set with opposite spirals, the two winding worm wheels 208 rotate in opposite directions, and directly drive the two winding rollers 202 that are fixedly connected to the two winding worm wheels 208 to rotate in opposite directions, winding up the tension hoop 203, so that the tension hoop 203 tightly wraps around the outer wall of the bridge column 1, further fixing the limiting frame 201 to one side of the limiting frame 201, preventing the limiting frame 201 from loosening, and improving the stability and safety during construction.

[0055] After the limit frame 201 is fixed, the construction worker can stand on top of the lifting platform 303, place the necessary maintenance tools on top of the lifting platform 303, and start the control circuit of the AC motor 308. Under electric drive, the output shaft of the AC motor 308 drives the drive pulley 309 to rotate, which in turn drives the driven pulley 3011 to rotate under the transmission action of the power belt 3010. This further drives the adjusting rod 3012, which is fixedly connected to the driven pulley 3011, to rotate. This causes the adjusting worm gear 3013, which is fixedly connected to the adjusting rod 3012, to rotate, which in turn drives the adjusting worm wheel 3014, which meshes with the adjusting worm gear 3013, to rotate. This further drives the adjusting worm wheel 3014, which meshes with the adjusting worm gear 3013, to rotate. The rotating shaft 305, which is fixedly connected to 3014, rotates and drives the traveling gear 306 to rotate. Under the meshing relationship between the traveling gear 306 and the traveling rack 307, the traveling gear 306 drives the lifting platform 303 to move. The lifting platform 303 is slidably connected to the I-shaped guide rail 301 through two I-shaped sliders 302, which further ensures the accuracy and stability of the lifting platform 303 sliding up and down. At the same time, since the driving of the adjusting worm 3013 on the adjusting worm wheel 3014 is irreversible, the adjusting worm wheel 3014 can rotate and self-lock the adjusting worm 3013, thereby preventing the lifting platform 303 from falling and greatly improving the safety of the maintenance personnel during the construction process.

[0056] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A bridge bearing maintenance device for urban rail transit engineering, comprising a bridge pier (1), characterized in that: The side of the bridge column (1) is fixedly provided with a limiting mechanism (2), and the periphery of the limiting mechanism (2) is provided with a lifting mechanism (3). The limiting mechanism (2) includes a limiting frame (201), inside which two take-up rollers (202) are rotatably connected. The two take-up rollers (202) are arranged in parallel. Two tensioning hoops (203) are fixedly connected to the outer walls of the two take-up rollers (202). The ends of the tensioning hoops (203) are fixedly connected to ring buckles (204). The tensioning hoops (203) are sleeved on the outer wall of the bridge column (1), and the ends of the tensioning hoops (203) are fixedly engaged by the ring buckles (204). The lifting mechanism (3) includes two I-shaped guide rails (301), which are arranged in parallel and fixedly connected to the side of the limiting frame (201) away from the bridge column (1). Two I-shaped sliders (302) are slidably connected to the outer periphery of the two I-shaped guide rails (301). The outer surfaces of the two I-shaped sliders (302) are fixedly connected to a lifting platform (303). The lifting platform (303) is located on the periphery of the bridge column (1). An adjusting plate (304) is fixedly connected to the top of the limiting frame (201). The adjusting plate (304) is located on one side of the limiting frame (201). A rotating shaft (305) is rotatably connected inside the adjusting plate (304). A traveling gear (306) is fixedly connected to the end of the rotating shaft (305). A traveling rack (307) meshes with the periphery of the traveling gear (306). The traveling rack (307) is fixedly connected to the outer surface of the limiting frame (201) and is located between two I-shaped guide rails (301). A dual-shaft motor (205) is fixedly connected to the bottom wall of the limiting frame (201). Two torsion bars (206) are fixedly connected to the output shaft end of the dual-shaft motor (205) via a coupling. A winding worm (207) is fixedly connected to the outer wall of each of the two torsion bars (206). The two winding worms (207) have opposite helical directions, and both winding worms (207) have winding worm wheels (208) meshing on their sides. The two winding worm wheels (208) are fixedly connected to the outer walls of two winding rollers (202). The two winding rollers (202) are rotatably connected to the top and bottom walls of the limiting frame (201) via bearings. Two winding grooves (209) are provided on both sides of the limiting frame (201), and the two winding grooves (209) are located on the periphery of the two tensioning hoops (203). Two support wheels (2010) are fixedly connected to both sides of the limiting frame (201). The outer walls of the two support wheels (2010) abut against the inner side of the tensioning hoop (203). Two coupling slots (2011) are provided at the bottom of the limiting frame (201). Two coupling blocks (2012) are fixedly connected to the top of the limiting frame (201). The position and specifications of the two coupling blocks (2012) are adapted to the position and specifications of the two coupling slots (2011).

2. The bridge bearing maintenance device for urban rail transit engineering according to claim 1, characterized in that: An AC motor (308) is fixedly connected to the top of the lifting platform (303). An active pulley (309) is fixedly connected to the end of the output shaft of the AC motor (308). A power belt (3010) is fitted inside the groove of the active pulley (309). A passive pulley (3011) is connected to the end of the power belt (3010) away from the active pulley (309). An adjusting rod (3012) is fixedly connected inside the passive pulley (3011). The adjusting rod (3012) is rotatably connected to one side of the adjusting plate (304) through two rotating support frames. An adjusting worm (3013) is fixedly connected to the outer wall of the adjusting rod (3012). An adjusting worm wheel (3014) is engaged at the bottom of the adjusting worm (3013). The adjusting worm wheel (3014) is fixedly connected to the end of the rotating shaft (305) away from the traveling gear (306).

3. The bridge bearing maintenance device for urban rail transit engineering according to claim 2, characterized in that: The end of the adjusting rod (3012) is fixedly connected to a torsion handle (3015), which is located at the end of the adjusting rod (3012) away from the passive pulley (3011).

4. The bridge bearing maintenance device for urban rail transit engineering according to claim 3, characterized in that: A protective frame (3016) is fixedly connected to the top edge of the lifting platform (303).

5. The bridge bearing maintenance device for urban rail transit engineering according to claim 4, characterized in that: The bottom of the limiting frame (201) is fixedly connected to a support block (5), and the bottom of the lifting platform (303) is fixedly connected to multiple traveling rollers (4).

6. The construction process of the bridge bearing maintenance device for urban rail transit engineering according to claim 5, characterized in that: The following usage steps are included: S1, firstly, place the limiting frame (201) on the side of the bridge column (1), and use the support block (5) to support and fix the limiting frame (201) to improve the stability of the bottom of the limiting frame (201). Then, use the ring buckle (204) to snap the end of the tension hoop (203) so that the ends of the two tension hoops (203) of the same height are connected by the ring buckle (204). Then, start the control circuit of the dual-axis motor (205) so that after the power input, the output shaft of the dual-axis motor (205) drives the two torsion bars (206) to rotate, so that the two winding worms (207) fixed on the outer wall of the two torsion bars (206) rotate. The synchronous rotation further drives the two winding worm wheels (208) meshing with the two winding worms (207) to rotate. Since the two winding worms (207) are set with opposite spirals, the two winding worm wheels (208) rotate in opposite directions and directly drive the two winding rollers (202) fixedly connected to the two winding worm wheels (208) to rotate in opposite directions, winding the tension hoop (203) so that the tension hoop (203) tightly wraps around the outer wall of the bridge column (1), further fixing the limit frame (201) to one side of the limit frame (201), preventing the limit frame (201) from loosening, and improving the stability and safety during construction. S2, after the limit frame (201) is fixed, the construction worker can stand on the top of the lifting platform (303), place the necessary maintenance tools on the top of the lifting platform (303), and start the control circuit of the AC motor (308). Under electric drive, the output shaft of the AC motor (308) drives the drive pulley (309) to rotate, which in turn drives the driven pulley (3011) to rotate under the transmission action of the power belt (3010). This further drives the adjusting rod (3012) fixedly connected to the driven pulley (3011) to rotate, which in turn drives the adjusting worm gear (3013) fixedly connected to the adjusting rod (3012) to rotate. This causes the adjusting worm gear (3013) to rotate, which in turn drives the adjusting worm wheel (3014) meshing with the adjusting worm gear (3013) to rotate, which further drives the adjusting worm wheel (3014) meshing with the adjusting worm gear (3013) to rotate. The rotating shaft (305) fixedly connected to the wheel (3014) rotates, driving the traveling gear (306) to rotate. Under the meshing relationship with the traveling rack (307), the traveling gear (306) drives the lifting platform (303) to move. The lifting platform (303) is slidably connected to the I-shaped guide rail (301) through two I-shaped sliders (302), which further ensures the accuracy and stability of the lifting platform (303) sliding up and down. At the same time, since the driving of the adjusting worm gear (3013) to the adjusting worm wheel (3014) is irreversible, the adjusting worm wheel (3014) can rotate and self-lock the adjusting worm gear (3013), thereby preventing the lifting platform (303) from falling and greatly improving the safety of the maintenance personnel during the construction process.

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