A hanging rail device for bridge pier construction

Abstract

The present application relates to a kind of for bridge pier construction of hanging rail device, it includes the automatic lifting device of being set on bridge pier, the automatic lifting device is provided with hanging rail;The automatic lifting device includes ring pole, the radial inner periphery of the ring pole is arrayed with the climbing mechanism that is attached to the outer periphery of bridge pier, the radial inner periphery of the ring pole is simultaneously provided with driving mechanism, the driving mechanism drives the climbing mechanism along the bridge pier climbs or falls and leads the hanging rail moves up and down.The present application can climb or fall along bridge pier to transport construction personnel to bridge pier fixed point position and carry out construction, construction is safe, and efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bridge construction equipment, and relates to a hanging rail device for bridge pier construction. BACKGROUND

[0002] At present, in the construction process or maintenance operation of a bridge pier, a crane is used to hoist a construction worker to a construction height to complete a work task on the bridge pier, or when the crane cannot operate, a steel pipe fastener frame is erected at the bottom of the bridge pier to form a work platform for construction operation. When the height is adjusted, the original work platform is not suitable, and needs to be continuously built, which requires a large number of building accessories and workers, increases the construction cost and the labor intensity of the workers, and meanwhile, the construction workers have safety risks when hoisted by the crane. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a hanging rail device for bridge pier construction, which can climb or descend along the bridge pier to transport construction workers to a fixed point position of the bridge pier for construction, and is safe and efficient.

[0004] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0005] A hanging rail device for bridge pier construction, comprising an automatic lifting device sleeved on a bridge pier, wherein a hanging rail is arranged on the automatic lifting device; the automatic lifting device comprises a ring lever, the ring lever is sleeved on the outer periphery of the bridge pier, the inner periphery of the ring lever is arrayed with a climbing mechanism which is attached to the outer periphery of the bridge pier, and the inner periphery of the ring lever is simultaneously provided with a driving mechanism, the driving mechanism drives the climbing mechanism to climb or descend along the bridge pier to drive the hanging rail to move up and down.

[0006] Further, a launching device is arranged on the hanging rail, the launching device is provided with a traction rope, and the launching device launches the traction rope to pull a safety rope suspended on a bent cap.

[0007] Further, the ring lever comprises a pair of oppositely hinged semicircular clamping levers, the climbing mechanism and the driving mechanism are arranged on each semicircular clamping lever, the climbing mechanism comprises a first support frame, one end of the first support frame is arranged on the semicircular clamping lever, and the other end of the first support frame is hinged with a climbing wheel; the driving mechanism comprises a second support frame, one end of the second support frame is arranged on the semicircular clamping lever, and the other end of the second support frame is provided with a first driving motor, and the first driving motor drives the climbing wheel to rotate.

[0008] Further, the ejecting device further comprises an ejecting tube, an electromagnetic mechanism is arranged on the outer periphery of one end of the ejecting tube, an ejecting rib opposite to the electromagnetic mechanism is arranged on the outer periphery of the other end of the ejecting tube, a lead head is sleeved in the ejecting tube, the lead head is adsorbed by the electromagnetic mechanism, the traction rope is connected to the lead head, and one end of the ejecting rib is extended and connected to the electromagnetic mechanism; the electromagnetic mechanism is released, the ejecting rib ejects the lead head, and the traction rope is ejected to the other end of the ejecting tube to pull the safety rope suspended on the bent cap.

[0009] Further, the other end of the ejecting tube is further provided with a traction rope clamping device, the traction rope clamping device comprises a second telescopic cylinder and a pair of clamping plates, the pair of clamping plates are respectively hinged on the upper sides of the end portions of the ejecting tube and are oppositely buckled to be in the shape of a claw, the end portion of the second telescopic cylinder is provided with a wedge-shaped block, the wedge-shaped block is embedded in one end of the pair of clamping plates which are oppositely buckled, the other end of the pair of clamping plates is respectively provided with a rope clamping shaft, and the second telescopic cylinder drives the wedge-shaped block to perform telescopic movement, so that the pair of clamping plates are opened and closed to drive the pair of rope clamping shafts to loosen the traction rope.

[0010] Further, the end portion of the clamping plate on one side of each rope clamping shaft is provided with a third driving motor, the third driving motor drives the rope clamping shaft to rotate and pull the traction rope.

[0011] Further, the hanging rail is further provided with a second driving motor and a rope winding device, the output end of the second driving motor drives one end of the ejecting device to rotate, and the other end of the traction rope is connected to the rope winding device; a fourth driving motor is arranged on the lower side of the second driving motor on the outer side of the hanging rail, and the fourth driving motor is drivingly connected to the rope winding device after being connected to a clutch, and the power of the fourth driving motor and the rope winding device is cut off or transmitted through the clutch.

[0012] Further, the outer periphery of the ring lever is provided with a first telescopic cylinder, the two ends of the first telescopic cylinder are respectively connected to the two ends of a pair of semicircular clamping levers which are oppositely hinged, and the inner diameter of the pair of semicircular clamping levers after buckling is adjusted through the telescopic adjustment of the first telescopic cylinder.

[0013] Further, a remote controller is further included, and the remote controller wirelessly controls the actions of the first driving motor, the second driving motor, the third driving motor, the fourth driving motor, the electromagnetic mechanism, the first telescopic cylinder and the second telescopic cylinder.

[0014] Further, the automatic lifting devices are respectively sleeved on a pair of bridge piers adjacent in the transverse direction, and a connecting guardrail is arranged between the hanging rails of each automatic lifting device, and the connecting guardrail is integrated with the hanging rails at both ends.

[0015] The present application has the following advantages and effects due to the above technical scheme:

[0016] The automatic climbing device arranged around the pier can drive the hanging rail to automatically ascend and descend, avoiding the use of hoisting or the construction of operation platform to perform construction on different height positions of the pier, and the construction is convenient and efficient; meanwhile, the ejection device arranged on the hanging rail can hook the safety rope extended from the bent cap at the front end of the pier through the ejection mode, and the construction is performed through the binding of the safety rope, and the safety protection effect of the construction is improved.

[0017] The hanging rail device can be arranged on the adjacent piers, and the hanging rails are connected to form an integral operation platform, the operation area of the construction is expanded, the construction personnel can perform arbitrary operation in the space below the width range of the bent cap, and the construction efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a front view structural schematic diagram of a pair of hanging rail devices of the application during butt joint construction.

[0019] Figure 2 is a top view structural schematic diagram of a hanging rail device of the application during construction.

[0020] Figure 3 is a structural schematic diagram of an ejection device of the application.

[0021] Figure 4 is Figure 3 a top view.

[0022] Figure 5 is Figure 3 a left view enlarged structural schematic diagram.

[0023] Figure 6 is Figure 3 a right view enlarged structural schematic diagram.

[0024] In the figure: 1-pier, 2-bent cap, 3-semi-circular clamping lever, 4-first support frame, 5-pin cylinder, 6-climbing wheel, 7-hinge shaft, 8-universal shaft, 9-ejection pipe, 10-rope clamping wheel shaft, 11-first driving motor, 12-first telescopic cylinder, 13-wire head, 14-ejection rib, 15-electromagnetic machine cover, 16-pulling rope, 17-second driving motor, 18-lead rope wheel, 19-spring, 20-second support frame, 21-safety rope, 22-rope winding device, 23-clamping plate, 24-hanging rail, 25-convex plate, 26-clutch, 27-driving gear, 28-remote controller, 29-connection guardrail, 30-rotary gear, 31-roller, 32-wedge block, 33-sliding groove, 34-fixing plate, 35-rotary shaft, 36-ejection rib fixing column, 37-shaft sleeve, 38-ejection seat, 39-second telescopic cylinder, 40-third driving motor, 41-connection disc, 42-hinge plate, 43-fourth driving motor. DETAILED DESCRIPTION

[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0026] This invention provides a hoisting device for bridge pier construction. An automatic lifting device is fitted onto the pier, and a hoisting rail is mounted on the automatic lifting device. The automatic lifting device automatically moves the hoisting rail up and down along the pier's axial direction, encircling the pier's radial periphery. A launcher device is also installed on the hoisting rail, which hooks a traction rope onto a safety rope suspended at the front end of the cap beam. This invention avoids the need to erect a working platform or perform hoisting operations at the bottom of the pier, resulting in high construction efficiency. Furthermore, the launcher device secures the safety rope at the end of the cap beam, making construction safer and more reliable.

[0027] like Figure 1 As shown. A lifting device for bridge pier construction according to the present invention includes an automatic lifting device sleeved on the pier 1, with a lifting rail 24 mounted on the automatic lifting device; the automatic lifting device includes a ring bar sleeved on the outer periphery of the pier 1, and a climbing mechanism arranged in a radial inner array on the ring bar that conforms to the outer peripheral surface of the pier 1; a driving mechanism is also arranged in the radial inner periphery of the ring bar, the driving mechanism driving the climbing mechanism to climb or descend along the pier 1, thereby moving the lifting rail 24 up and down; a launching device is provided on the lifting rail 24, and a traction rope 16 is provided on the launching device, the launching device launching the traction rope 16 to pull the safety rope 21 suspended on the cap beam 2.

[0028] Specifically, the automatic lifting device is slidably mounted on the radial outer circumference of the pier 1, and the hanging railing 24 is laterally positioned at the upper front end of the automatic lifting device. The automatic lifting device can automatically control the climbing or lowering of the pier 1 to drive the hanging railing 24 on it to rise or fall.

[0029] The upper end of the automatic lifting device is also equipped with a connecting plate 41, and the hanging rail 24 is mounted on the connecting plate 41. The launching device is mounted on one horizontal end of the hanging rail 24, and the launching device is rotatably connected to the hanging rail 24. When the launching device pulls the safety rope 21, the launching device can rotate to a position perpendicular to the hanging rail 24 or the cap beam 2, and the safety rope 21 is vertically suspended at the end of the cap beam 2. Since the front end of the cap beam 2 extends out of the pier 1, the launching device horizontally launches the traction rope 16 to a position vertically below the cap beam 2 to pull the safety rope 21 onto the hanging rail 24, thus securing the safety rope 21.

[0030] Furthermore, the ring bar includes a pair of opposing hinged semi-circular clamps 3, each semi-circular clamp 3 is provided with the climbing mechanism and the driving mechanism. The climbing mechanism includes a first support frame 4, one end of the first support frame 4 is provided on the semi-circular clamp 3, and the other end of the first support frame 4 is hinged to a climbing wheel 6. The driving mechanism includes a second support frame 20, one end of the second support frame 20 is provided on the semi-circular clamp 3, and the other end of the second support frame 20 is provided with a first drive motor 11. The output end of the first drive motor 11 is drivenly connected to the climbing wheel 6, and the first drive motor 11 drives the climbing wheel 6 to rotate.

[0031] Specifically, the two opposite ends of the rear side of a pair of semi-circular clamps 3 are hinged by a hinge shaft 7, and the two opposite ends of the front side are hinged by a pin cylinder 5. Multiple pin holes can be provided at the ends of the pair of semi-circular clamps 3 at one end of the hinge shaft 7, and the tensioning and slack of the pair of semi-circular clamps 3 can be achieved through the cooperation of the pin holes and the hinge shaft 7.

[0032] As a preferred embodiment, the hinge shaft 7 can be an electric actuator, which automatically controls the separation of the hinged ends of a pair of semi-circular clamps 3. When an electric actuator is used, it is fixed to the end of one semi-circular clamp 3, and its telescopic end freely passes through the radial direction of the semi-circular clamp 3. The other semi-circular clamp has a radial array of pin holes, and the telescopic end of the electric actuator can be extended or retracted into different pin holes to achieve the fixation, tensioning, and relaxation of the pair of semi-circular clamps 3.

[0033] The first support frame 4 of the climbing mechanism includes a fixed rod and a U-shaped groove, with the closed ends of the fixed rod and the U-shaped groove connected as a single unit. A climbing wheel axle is fitted inside the U-shaped groove, and the climbing wheel 6 is fitted on the climbing wheel axle. One end of the fixed rod is fitted on the radial inner circumference of the semi-circular clamp 3, and the fixed rod extends towards the inner circumference of the semi-circular clamp 3. A spring 19 is fitted on the fixed rod extending out of the outer circumference of the semi-circular clamp 3, and the spring 19 provides elastic force to press the climbing wheel 6 against the outer circumference of the bridge pier 1.

[0034] The second support frame 20 of the drive mechanism includes a fixed rod and a U-shaped groove, with the closed ends of the fixed rod and the U-shaped groove connected as a single unit. The first drive motor 11 is sleeved inside the U-shaped groove of the second support frame 20, the fixed rod of the second support frame 20 is embedded in the radial inner circumference of the semi-circular clamp 3, and the first drive motor 11 is disposed inside the U-shaped groove of the second support frame 20. The end of the first drive motor 11 is spaced apart from the outer peripheral surface of the pier 1.

[0035] In this invention, the driving mechanism is set in the middle of each semi-circular clamp 3, and adjacent climbing mechanisms are set on both sides of each driving mechanism. Both ends of the first driving motor 11 of each driving mechanism are used as output ends. Each output end is connected to the climbing wheel shaft on the climbing mechanism through a universal joint 8. The climbing wheel shafts of adjacent climbing mechanisms are driven and connected through the universal joint 8. When the first driving motor 11 of the driving mechanism rotates, it can simultaneously drive the climbing wheel 6 on each climbing mechanism to rise or fall axially along the outer periphery of the pier 1.

[0036] Furthermore, the ejection device also includes an ejection tube 9, with an electromagnetic actuator 15 disposed on the outer periphery of one end of the ejection tube 9, and an ejection rib 14 disposed on the outer periphery of the other end of the ejection tube 9 opposite to the electromagnetic actuator 15. A lead wire head 13 is sleeved inside the ejection tube 9, and the lead wire head 13 is attracted by the electromagnetic actuator 15. The tail of the lead wire head 13 is connected to a traction rope 16. One end of the ejection rib 14 extends and is connected to the electromagnetic actuator 15. When the electromagnetic actuator 15 at one end of the ejection tube 9 is released, the ejection rib 14 ejects the lead wire head 13, which drives the traction rope 16 to eject to the other end of the ejection tube 9, pulling the safety rope 21 suspended on the cap beam 2.

[0037] Specifically, the ejection device is rotatably connected to one side of the upper end of the railing 24. The ejection device can move around the railing 24 to a position parallel or perpendicular to the railing 24. When the ejection device is perpendicular to the railing 24, the ejection traction rope 16 extends out of the traction safety rope 21 for safety protection.

[0038] Both sides of the upper outer periphery of the ejection tube 9 are provided with spring-loaded fixing posts 36, which are located on the outer side of the middle of the ejection tube 9. The two ends of the ejection rib 14 are respectively fixed to the spring-loaded fixing posts 36, and the middle part of the ejection rib 14 is hinged to the ejection seat 38 at one end of the electromagnetic mechanism 15 in a V-shape. A sliding groove 33 is also provided on the upper central axis of the ejection tube 9. The ejection seat 38 is embedded in the sliding groove 33 and can move along the axial direction of the sliding groove 33. When the ejection seat 38 is located at the same end of the electromagnetic mechanism 15, the ejection seat 38 is attracted and connected by the electromagnetic mechanism 15. The ejection seat 38 is connected and fixed to the lead head 13, which drives the lead head 13 to move. The front end of the traction rope 16 extends out of the end of the lead head 13, and the end of the traction rope 16 can be provided with a hook for hooking the safety rope 21. When the electromagnetic actuator 15 is released, the electromagnetic actuator 15 releases the ejector seat 38. The elastic force of the ejector rib 14 causes the ejector seat 38 to move the lead wire head 13 along one end of the ejector tube 9 to the other end to pull the safety rope 21.

[0039] The length of the slide 33 extends from one end of the electromagnetic actuator 15 on the catapult tube 9 to one end of the spring rib fixing post 36.

[0040] Furthermore, a first telescopic cylinder 12 is provided on the outer periphery of the ring bar. The two ends of the first telescopic cylinder 12 are respectively connected to the two ends of a pair of semi-circular clamping bars 3 that are hinged to each other. The inner diameter of the pair of semi-circular clamping bars 3 after they are engaged is adjusted by extending and retracting the first telescopic cylinder 12.

[0041] Specifically, to facilitate adjustment of the inner diameter of the ring bar or disassembly and fixing of the automatic lifting device, outwardly extending convex plates 25 are provided at both ends of the pair of semi-circular clamping bars 3 hinged by the pin cylinder 5. The first telescopic cylinder 12 is connected to the pair of convex plates 25. The two ends of the first telescopic cylinder 12 are respectively fixed to the pair of spaced convex plates 25. After pulling out the telescopic end of the hinge shaft 7 or the electric push rod and exiting the pin hole, one end of the pin cylinder 5 of the pair of semi-circular clamping bars 3 forms a hinge. At this time, the pair of convex plates 25 and the pair of semi-circular clamping bars 3 form a scissor-hand hinge. By extending or pressing the pair of convex plates 25 through the first telescopic cylinder 12, the tension and relaxation force of the ring bar can be automatically controlled and adjusted. After adjustment, the pair of semi-circular clamping bars 3 are fixed by the hinge shaft 7 to achieve a tight grip on the bridge pier 1. Or, the pair of semi-circular clamping bars 3 can be released to achieve detachment from the bridge pier 1. The lower end face of the connecting plate 41 is welded and fixed to the upper end of the pin cylinder 5, and the upper end of the connecting plate 41 is welded to the hanging railing 24.

[0042] Furthermore, a traction rope clamping device is provided at the other end of the ejection tube 9. The traction rope clamping device includes a second telescopic cylinder 39 and a pair of clamping plates 23. The pair of clamping plates 23 are respectively hinged to the upper side of the end of the ejection tube 9 and are locked together in a claw-like manner. A wedge block 32 is provided at the end of the second telescopic cylinder 39. The wedge block 32 is embedded in the locked end of the pair of clamping plates 23. A rope clamping wheel axle 10 is provided at the other end of the pair of clamping plates 23. The second telescopic cylinder 39 drives the wedge block 32 to telescopically move, causing the pair of clamping plates 23 to open and close, thereby causing the pair of rope clamping wheel axles 10 to loosen the traction rope 16 or safety rope 21.

[0043] Specifically, a fixing plate 34 is radially fixed at the end of the slide groove 33 at the upper end of the ejection tube 9. The second telescopic cylinder 39 is axially arranged in the middle of the fixing plate 34. The bottom of the fixed end of the second telescopic cylinder 39 is connected to the fixing plate 34. The telescopic end of the second telescopic cylinder 39 extends toward the outer end of the ejection tube 9. The wedge block 32 is fixed at the end of the telescopic end of the second telescopic cylinder 39. The small end of the wedge block 32 is connected to the telescopic end of the second telescopic cylinder 39.

[0044] Each clamping plate 23 has an arc-shaped structure, and one end of each clamping plate 23 is hinged to the upper side of the end of the ejection tube 9. The pair of arc-shaped clamping plates 23 have V-shaped claws that hug each other, and the open ends of the claws extend outward toward the end of the ejection tube 9.

[0045] Hinged plates 42 are respectively provided on both sides of the lower end of the catapult tube 9. The hinged plates 42 have the same structure as the clamping plates 23. One end of a pair of hinged plates 42 is hinged to the outer periphery of the lower end of the catapult tube 9. Each hinged plate 42 and the clamping plate 23 are arranged vertically opposite each other. The upper and lower ends of the rope clamping wheel axle 10 are respectively slidably sleeved on the ends of the clamping plate 23 and the hinged plates 42. When the lead wire head 13 of the catapult device drives the end of the traction rope 16 to reach the end of the catapult tube 9, the second telescopic cylinder 39 extends and retracts, driving the wedge block 32 to move. The wedge block 32 causes the pair of clamping plates 23 to open and close simultaneously, driving the pair of hinged plates 42 to open and close accordingly, so that the pair of rope clamping wheel axles 10 are relatively close or separate. When the rope clamping wheel axles 10 are relatively close, the end of the traction rope 16 is clamped horizontally and hooked onto the vertically lowered safety rope 21. After the traction is successfully completed, the pair of rope clamping wheel axles 10 can be released from the traction rope 16 or the safety rope 21.

[0046] Furthermore, the suspension rail 24 is also equipped with a second drive motor 17 and a rope winder 22. The output end of the second drive motor 17 drives one end of the ejection device to rotate, and the rope winder 22 is connected to the other end of the traction rope 16.

[0047] Specifically, a fixing plate 34 is provided at the lower part of the ejector tube 9 located at one end of the electromagnetic actuator 15. The fixing plate 34 extends beyond the end of the ejector tube 9. A guide rope wheel 18 is provided on the fixing plate 34. The traction rope 16 at one end of the lead wire 13 passes around the guide rope wheel 18 and changes from a horizontal state to a vertical state before being wound onto the rope winder 22. A rotating shaft 35 is provided at the lower end of the fixing plate 34. The rotating shaft 35 is slidably sleeved in the bushing 37. One end of the bushing 37 is connected to the outside of the hanging rail 24. The rotating shaft 35 extends beyond both ends of the bushing 37. A rotating gear 30 is sleeved on the lower end of the rotating shaft 35. The second drive motor 17 and the rope winder 22 are located on the outer surface of the hanging rail 24 on the same side as the bushing 37. A drive gear 27 is sleeved on the output end of the second drive motor 17 and meshes with the rotating gear 30 for transmission. The second drive motor 17 drives the ejector tube 9 to rotate through the drive gear 27 and the rotating gear 30.

[0048] Furthermore, to facilitate the initiation and disengagement of the rope reel 22, the rope reel 22 is connected to the clutch 26 via the fourth drive motor 43, which in turn drives the rope reel 22. The clutch 26 controls the cutting off or transmission of power between the rope reel 22 and the fourth drive motor 43. The fourth drive motor 43 is located on the outer side of the hanging frame 24, below the second drive motor. When the clutch 26 is disengaged, the rope reel 22 can disengage from the drive control of the fourth drive motor 43, allowing the traction rope 16 to be released freely.

[0049] Furthermore, a third drive motor 40 is provided at the end of the clamping plate 23 on one side of each rope clamping wheel shaft 10. The third drive motor 40 drives the rope clamping wheel shaft 10 to rotate and pull the traction rope 16 or safety rope 21.

[0050] Specifically, to facilitate the further lowering of the safety rope 21 after the ejection device clamps it, a third drive motor 40 is installed on the end of each clamping plate 23 extending from the ejection tube 9. The output end of the third drive motor 40 is connected to the rope clamping wheel axle 10 via gear drive. When the second telescopic cylinder 39 telescopically moves to clamp the end of the traction rope 16 horizontally and hooks the vertically lowered safety rope 21, the third drive motor 40 can be started to drive the rope clamping wheel axle 10 to rotate, causing the traction rope 16 to continue to descend. At the same time, the rope reel 22 is started to pull the traction rope 16 and the safety rope 21.

[0051] Furthermore, in order to prevent the traction rope 16 and safety rope 21 from rubbing against the catapult tube 9 during the lowering process, a roller 31 is provided on the lower side of the end face of the catapult tube 9. The two ends of the roller 31 are slidably sleeved on the end of the catapult tube 9 and spaced apart from the end face of the catapult tube 9.

[0052] Furthermore, to facilitate wireless remote control, the device of the present invention also includes a remote controller 28, which wirelessly controls the operation of the first drive motor 11, the second drive motor 17, the third drive motor 40, the fourth drive motor 43, the rope winder 22, the clutch 26, the electromagnetic actuator 15, the first telescopic cylinder 12, the second telescopic cylinder 39, or the electric push rod. The entire suspended platform device can be remotely controlled automatically via the remote controller 28, which is convenient and quick.

[0053] Furthermore, in order to expand the construction space of the hanging railing device, the aforementioned automatic lifting device is installed on a pair of horizontally adjacent bridge piers 1 respectively. A connecting guardrail 29 is provided between the hanging railings 24 on each automatic lifting device, and the connecting guardrail 29 is connected to the hanging railings 24 at both ends as a whole.

[0054] Specifically, in order to facilitate the construction of the lower end of the cap beam 2, this invention involves installing lifting railing devices on two adjacent piers 1. Connecting guardrails 29 can be erected between the lifting railings 24 of adjacent lifting railing devices, connecting the lifting railings 24 of the two lifting railing devices to form a single unit. At this point, the connecting guardrails 29 and the lifting railings 24 on both sides form the entire operating platform, which can meet the construction requirements for the entire width of the cap beam 2. By controlling a pair of automatic lifting devices to simultaneously raise or lower, the entire operating platform can be raised and lowered simultaneously, enabling the interchangeable construction operations of adjacent piers 1 and the construction of the area below the cap beam 2.

[0055] When using this invention, firstly, the automatic lifting device is fixed on the pier 1, so that the climbing wheel 6 is in close contact with the concrete surface of the pier 1. Then, the first drive motor 11 is started to drive the climbing wheel 6 to rotate and rise, and it rises along the pier 1 to the designated position (or the bottom of the cap beam 2) and stops. Then start the second drive motor 17 to rotate the ejector tube 9 to a position with a 90° angle to the cover beam 2. Press the button on the electromagnetic actuator 15 on the remote control 28 to cause the ejector 14 ejector lead head 13 to drive the traction rope 16 to eject to the other end of the cover beam 2 to pull the safety rope 21. At the same time, the rope reel 22 releases the traction rope 16 under the drive of the lead head 13. Start the second telescopic cylinder 39 to drive the rope clamping wheel shaft 10 to move and clamp the end of the traction rope 16 horizontally and hook the safety rope 21. After the traction rope 16 hooks the safety rope 21, start the fourth drive motor 43 to drive the clutch 26 and make the rope reel 22 rotate so that the traction rope 16 pulls the safety rope 21 down to the position of the hanging rail device 24. After the safety rope 21 is tied to the hanging rail 24, safety protection is provided.

[0056] After the safety rope 21 is secured, the automatic lifting device is activated to carry the safety rope 21 and the construction personnel for lifting operations. Throughout the lifting operation, the safety rope 21 follows and protects the workers to ensure construction safety.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting device for bridge pier construction, characterized in that: The device includes an automatic lifting device mounted on a bridge pier, with a hanging railing on the device. The automatic lifting device includes a ring bar, which is mounted on the outer periphery of the bridge pier. A climbing mechanism that fits against the outer periphery of the bridge pier is arranged in an array on the radial inner periphery of the ring bar. A driving mechanism is also arranged on the radial inner periphery of the ring bar. The driving mechanism drives the climbing mechanism to climb or descend along the bridge pier, thereby moving the hanging railing up and down. The suspension railing is equipped with an ejection device, and the ejection device is equipped with a traction rope. The ejection device ejects the traction rope to pull the safety rope suspended on the cover beam. The ejection device also includes an ejection tube, one end of which is provided with an electromagnetic mechanism, and the other end of which is provided with an ejection rib opposite to the electromagnetic mechanism. A lead wire is sleeved inside the ejection tube, and the lead wire is attracted by the electromagnetic mechanism. The lead wire is connected to the traction rope. One end of the ejection rib extends and is connected to the electromagnetic mechanism. When the electromagnetic mechanism is released, the ejection rib ejects the lead wire, which drives the traction rope to eject to the other end of the ejection tube, pulling the safety rope suspended on the cap beam. The other end of the catapult tube is also provided with a traction rope clamping device, which includes a second telescopic cylinder and a pair of clamping plates. The pair of clamping plates are respectively hinged to the upper side of the end of the catapult tube and are locked together in a claw-like configuration. The end of the second telescopic cylinder is provided with a wedge block, which is embedded in one end of the pair of clamping plates that are locked together. The other end of the pair of clamping plates is provided with a rope clamping wheel axle. The second telescopic cylinder drives the wedge block to extend and retract, causing the pair of clamping plates to open and close, which in turn causes the pair of rope clamping wheel axles to loosen the traction rope.

2. The lifting device for bridge pier construction according to claim 1, characterized in that: The ring bar includes a pair of opposing hinged semi-circular clamps, each semi-circular clamp being provided with the climbing mechanism and the driving mechanism; the climbing mechanism includes a first support frame, one end of the first support frame being disposed on the semi-circular clamp, and the other end of the first support frame being hinged to a climbing wheel; the driving mechanism includes a second support frame, one end of the second support frame being disposed on the semi-circular clamp, and the other end of the second support frame being provided with a first drive motor, the first drive motor driving the climbing wheel to rotate.

3. A lifting device for bridge pier construction according to claim 2, characterized in that: A third drive motor is provided at the end of the clamping plate on one side of each rope clamping wheel axle. The third drive motor drives the rope clamping wheel axle to rotate and pull the traction rope.

4. A lifting device for bridge pier construction according to claim 3, characterized in that: The suspension rail is also equipped with a second drive motor and a rope winder. The output end of the second drive motor drives one end of the ejection device to rotate, and the rope winder is connected to the other end of the traction rope. A fourth drive motor is provided on the outer side of the suspension rail, below the second drive motor. After the fourth drive motor is connected to a clutch, it is driven by the rope winder. The clutch controls the cutting off or transmission of power between the rope winder and the fourth drive motor.

5. A lifting device for bridge pier construction according to claim 4, characterized in that: A first telescopic cylinder is provided on the outer periphery of the ring bar. The two ends of the first telescopic cylinder are respectively connected to the two ends of a pair of semi-circular clamps that are hinged to each other. The inner diameter of the pair of semi-circular clamps after they are engaged is adjusted by extending and retracting the first telescopic cylinder.

6. A lifting device for bridge pier construction according to claim 5, characterized in that: It also includes a remote control, which wirelessly controls the operation of the first drive motor, the second drive motor, the third drive motor, the fourth drive motor, the electromagnetic actuator, the first telescopic cylinder, and the second telescopic cylinder.

7. A lifting device for bridge pier construction according to claim 1, characterized in that: The aforementioned automatic lifting devices are respectively installed on a pair of horizontally adjacent bridge piers. A connecting guardrail is provided between the hanging rails of each automatic lifting device, and the connecting guardrail is connected to the hanging rails at both ends as a whole.

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