A clamp-type locking device attached to a safety ladder on a bridge cylindrical pier

Abstract

This invention discloses a clamp-type locking device for a safety ladder attached to a bridge cylindrical pier, belonging to the field of safety ladders. It includes a mounting base and a locking mechanism located at the top of the mounting base. The locking mechanism comprises a lifting assembly, a telescopic assembly, and a locking component. The lifting assembly includes a threaded rod, a handwheel, and a lifting plate groove. The outer wall of the mounting base is provided with a threaded rod, and a handwheel is fixedly connected to the top of the threaded rod. The outer wall of the threaded rod is threadedly connected to a lifting plate groove that slides slidably with the outer wall of the mounting base. By setting locking teeth and connecting toothed rings, the telescopic guide groove slides through the telescopic guide post, driving the telescopic connecting rod to slide along the inner wall of the limiting sleeve. The telescopic connecting rod slides through the connecting hole plate, driving two sets of clamp plates to rotate relative to each other. The rotation of the clamp plates causes the locking teeth to engage with the connecting toothed ring on the outer wall of the locking post. Through the locking operation of the four sets of locking posts, a rapid and stable installation operation between the mounting base and the ladder base is achieved.

Description

Technical Field

[0001] The invention relates to the field of safety ladders, and in particular to an attached clamp-shaped locking device for a bridge cylindrical pier safety ladder. Background Art

[0002] The cylindrical pier of the bridge is a substructure that supports the bridge span structure and transmits the dead load and vehicle live load to the foundation. The abutments are located on both sides of the bridge, and the piers are between the two abutments. The function of the pier is to support the bridge span structure. During the construction of the cylindrical pier of the bridge, a safety ladder needs to be placed on one side of the pier. The main components of the safety ladder scaffolding are vertical poles, horizontal poles and diagonal poles. The vertical poles must have a reliable self-locking function, which can effectively improve the stability, strength and safety of the entire scaffolding. It is widely used in various engineering construction projects such as building construction, bridges, overpasses, tunnels, culverts, chimneys, water towers, dams and large-span scaffolding.

[0003] However, the existing bridge cylindrical pier safety ladder attached with a clamp-shaped locking device requires four sets of vertical poles to be self-locked separately when in use, which makes the self-locking operation complicated. In addition, when the existing bridge cylindrical pier safety ladder is in use, the vertical pole assembly requires bolt connection, which is difficult to disassemble the vertical poles. In addition, when the existing bridge cylindrical pier safety ladder is in use, only a protective net is installed on the outside. When a safety accident occurs, the protective capacity of the protective net is limited and cannot guarantee the personal safety of personnel, which does not meet people's use needs. For this reason, we propose a bridge cylindrical pier safety ladder attached with a clamp-shaped locking device. Summary of the invention

[0004] The purpose of the present invention is to provide a clamp-type locking device attached to a safety ladder of a bridge cylindrical pier to solve the problems of the inability to synchronously self-lock four groups of vertical poles, the disassembly and assembly of the vertical poles, and the limited protection capacity of the safety ladder proposed in the above-mentioned background technology.

[0005] The present invention is implemented as follows: a bridge cylindrical pier safety ladder attachment type clamp-shaped locking device, including a mounting base and a locking mechanism arranged on the top of the mounting base, the locking mechanism including a lifting assembly, a telescopic assembly and a locking assembly;

[0006] The lifting assembly comprises a threaded rod, a hand wheel and a lifting plate slot, the outer wall of the mounting base is provided with a threaded rod, the top end of the threaded rod is fixedly connected to the hand wheel, and the outer wall of the threaded rod is threadedly connected to the lifting plate slot slidably connected to the outer wall of the mounting base;

[0007] The telescopic assembly includes a telescopic guide groove, a telescopic connecting rod, a telescopic guide column and a limit sleeve. The outer wall of the lifting plate groove is provided with a telescopic guide groove. The outer wall of the telescopic guide groove is movably connected with a telescopic connecting rod slidably connected with the outer wall of the mounting base. The connecting part of the telescopic connecting rod and the telescopic guide groove is provided with a telescopic guide column. The outer part of the telescopic connecting rod is sleeved with a limit sleeve fixedly connected with the outer wall of the mounting base.

[0008] The locking assembly includes a connecting hole plate, a clamp plate, a locking tooth plate, a connecting tooth ring and a locking column. One end of the telescopic connecting rod is fixedly connected to the connecting hole plate, and the outer wall of the connecting hole plate is movably connected to the clamp plate screwed to the outer wall of the mounting base. One end of the clamp plate is fixedly connected to the locking tooth plate, and the outer wall of the locking tooth plate is meshed with a connecting tooth ring. The outer wall of the connecting tooth ring is located at the top of the mounting base and is fixedly connected to the locking column.

[0009] Preferably, the top of the locking column is fixedly connected to the ladder base, the top edge of the ladder base is fixedly connected to the connecting column, an installation column is arranged above the connecting column, the outer portion of the installation column is sleeved with a connecting frame fixedly connected to the top of the connecting column, the top of the ladder base is located on one side of the connecting column and is fixedly connected to a ladder body, the top edge of the ladder body is fixedly connected to a guardrail, and the outer wall of the guardrail is slidably connected to a safety frame.

[0010] Preferably, four groups of telescopic guide grooves are provided, and the positions of the four groups of telescopic guide grooves are symmetrical with respect to the lifting plate grooves. The telescopic guide grooves are inclined, and the telescopic connecting rod forms a sliding structure through the lifting plate grooves and the telescopic guide grooves and the limiting sleeve.

[0011] Preferably, the pliers are provided with two groups, and the positional relationship of the two groups of pliers is symmetrical with respect to the telescopic connecting rod. The pliers form a rotating structure with the mounting base through the telescopic connecting rod and the connecting hole plate, and the locking tooth plate forms a locking structure with the pliers and the connecting tooth ring.

[0012] Preferably, the connecting frame includes a limit guide rod, a return spring, a lifting slider, a lifting plate, a connecting rod, a locking guide block, a locking guide rod, a contact slider, a fixed abutment block, a locking slider and a locking groove, the interior of the connecting frame is fixedly connected to the inner wall of the mounting column, the outside of the limit guide rod is provided with a return spring, the top of the return spring is fixedly connected to a lifting slider slidably connected to the outer wall of the limit guide rod, the top of the lifting slider is fixedly connected to the lifting plate extending to the outside of the mounting column, The side wall of the lifting slider is screwed with a connecting rod, and the bottom end of the connecting rod is screwed with a locking guide block, and the connecting portion between the locking guide block and the mounting column is provided with a locking guide rod, and the bottom end of the locking guide block is fixedly connected with an abutment slider, and the abutment surface of the abutment slider abuts with a fixed abutment block fixedly connected to the top of the connecting column, and one end of the abutment slider away from the fixed abutment block is fixedly connected with a locking slider slidably connected to the bottom end of the mounting column, and one end of the locking slider is located on the inner wall of the connecting frame and is provided with a locking groove.

[0013] Preferably, four groups of the abutting sliding blocks are provided, and the positional relationship of the four groups of the abutting sliding blocks is distributed in an equiangular circle with respect to the fixed abutting block, and the contact surface between the abutting sliding blocks and the fixed abutting block is an inclined surface.

[0014] Preferably, the engaging slider forms an engaging structure by abutting against the slider and the engaging groove, and the lifting slider forms a sliding structure by connecting the connecting rod and the engaging guide block and the limiting guide rod.

[0015] Preferably, the safety frame comprises a sliding slide, a safety rope, a connecting oblique groove, a connecting column, a telescopic connecting block, an abutment block, an active orifice plate, a connecting rotating plate, a driven orifice plate, a working spring and a roller, the outer wall of the safety frame is slidably connected with the sliding slide, the top of the sliding slide is fixedly connected with the safety rope, the outer wall edge of the sliding slide is provided with a connecting oblique groove, the inner wall of the connecting oblique groove is movably connected with a connecting connecting column, the bottom end of the connecting connecting column is fixedly connected with the telescopic connecting block slidably connected with the outer wall of the safety frame, the outer wall of the telescopic connecting block is fixedly connected with the abutment block that fits with the outer wall of the guardrail, one end of the telescopic connecting block is fixedly connected with the active orifice plate, the outer wall of the active orifice plate is movably connected with a connecting rotating plate rotated with the outer wall of the safety frame, one end of the connecting rotating plate is movably connected with the driven orifice plate slidably connected with the inner wall of the safety frame, the connecting part of the driven orifice plate and the safety frame is provided with a working spring, and the side wall of the driven orifice plate away from the working spring is rotated with a roller.

[0016] Preferably, the sliding slide forms a sliding structure between the safety rope and the safety frame, two groups of connecting bevel grooves are provided, the positional relationship of the two groups of connecting bevel grooves is symmetrical with respect to the sliding slide, and the telescopic connecting block forms a sliding structure between the connecting bevel grooves and the safety frame.

[0017] Preferably, the active orifice plates are provided in two groups, and the positional relationship of the two groups of active orifice plates is symmetrical with respect to the telescopic connecting block. The connecting rotating plate forms a rotating structure with the safety frame through the telescopic connecting block and the active orifice plate, and the roller forms a sliding structure with the safety frame through the connecting rotating plate and the driven orifice plate.

[0018] The invention provides a bridge cylindrical pier safety ladder attachment type clamp-shaped locking device, which has the following beneficial effects when used:

[0019] 1. A clamp-shaped locking device attached to a safety ladder for a bridge cylindrical pier is provided with a locking tooth plate and a connecting tooth ring. The telescopic guide groove slides through the telescopic guide column to drive the telescopic connecting rod to slide along the inner wall of the limiting sleeve. The telescopic connecting rod slides through the connecting hole plate to drive the two sets of clamp plates to rotate relative to each other. The rotation of the clamp plates drives the locking tooth plate to engage with the connecting tooth ring on the outer wall of the locking column. Through the locking operation of the four sets of locking columns, the installation base and the ladder base can be quickly and stably installed.

[0020] 2. This kind of clamp-shaped locking device attached to the safety ladder of the cylindrical pier of the bridge is equipped with a locking slider and a locking groove. The self-gravity of the installation column drives the abutment slider to fit with the fixed block, and the inclined fixed block drives four groups of abutment sliders to slide along the outer wall of the locking guide rod. The sliding of the abutment slider drives the locking slider to engage with the locking groove on the inner wall of the connecting frame, thereby realizing the automatic splicing operation of the connecting column and the installation column.

[0021] 3. This kind of clamp-shaped locking device attached to the safety ladder of the cylindrical pier of the bridge is equipped with an abutting slider. The abutting slider slides through the connecting rod to drive the lifting slider to overcome the elastic force of the return spring and slide along the outer wall of the limiting guide rod. The sliding of the lifting slider drives the connecting rod to slide synchronously, thereby realizing the rapid disassembly operation of the engaging slider and the engaging groove.

[0022] 4. This kind of clamp-shaped locking device attached to the safety ladder of the cylindrical pier of the bridge is provided with an abutment block. When a safety accident occurs, the construction personnel drive the sliding plate to slide along the outer wall of the safety frame through the safety rope. The sliding of the sliding plate drives the two sets of connecting inclined grooves to slide synchronously, so that the sliding of the connecting inclined groove drives the telescopic connecting block to slide along the outer wall of the safety frame through the connecting column. The sliding of the telescopic connecting block drives the abutment block to fit with the guardrail, thereby realizing the safety protection operation for the construction personnel when using the ladder.

[0023] 5. This kind of clamp-shaped locking device attached to the safety ladder of the cylindrical pier of the bridge is equipped with a roller. The sliding of the telescopic connecting block drives the two sets of active orifice plates to slide synchronously, and then the sliding of the active orifice plate drives the connecting rotating plate to rotate. The rotation of the connecting rotating plate drives the roller to overcome the elastic force of the working spring and slide along the outer wall of the safety frame through the driven orifice plate, thereby realizing the control operation of the relative movement of the roller and the guardrail. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. As shown in the accompanying drawings, the above and other purposes, features and advantages of the present invention will be clearer. The same reference numerals in all the drawings indicate the same parts. The drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the top structure of the mounting base of the present invention;

[0027] Figure 3 It is a schematic diagram of the connection structure of the telescopic guide groove and the telescopic connecting rod of the present invention;

[0028] Figure 4 It is a schematic diagram of the connection structure of the connection hole plate of the present invention;

[0029] Figure 5 It is a schematic diagram of the connection structure of the locking tooth plate and the connecting tooth ring of the present invention;

[0030] Figure 6 It is a schematic diagram of the cross-sectional structure of the connection frame of the present invention;

[0031] Figure 7 It is a schematic diagram of the working structure of the abutting sliding block and the fixed abutting block of the present invention;

[0032] Figure 8 It is a schematic diagram of the safety framework structure of the present invention;

[0033] Fig. 9 It is a schematic diagram of the connection structure between the abutment block and the roller of the present invention.

[0034] Summary of reference numerals: 1. Mounting base; 2. Threaded rod; 3. Hand wheel; 4. Lifting plate slot; 5. Telescopic guide slot; 6. Telescopic connecting rod; 7. Telescopic guide column; 8. Limiting sleeve; 9. Connecting hole plate; 10. Clamp plate; 11. Locking tooth plate; 12. Connecting gear ring; 13. Locking column; 14. Ladder base; 15. Connecting column; 16. Mounting column; 17. Connecting frame; 1701. Limiting guide rod; 1702. Return spring; 1703. Lifting slider; 1704. Lifting plate; 1705. Connecting connecting rod; 1706. Card 1707, engaging guide block; 1708, abutting slider; 1709, fixed abutting block; 1710, engaging slider; 1711, engaging groove; 18, ladder body; 19, guardrail; 20, safety frame; 2001, sliding plate; 2002, safety rope; 2003, connecting inclined groove; 2004, connecting column; 2005, telescopic connecting block; 2006, abutting block; 2007, active orifice plate; 2008, connecting rotating plate; 2009, driven orifice plate; 2010, working spring; 2011, roller. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0039] For examples, see Figures 1 to 9 , this embodiment provides a bridge cylindrical pier safety ladder attachment type clamp-shaped locking device, including a mounting base 1 and a locking mechanism arranged at the top of the mounting base 1, the locking mechanism including a lifting assembly, a telescopic assembly and a locking assembly;

[0040] The lifting assembly includes a threaded rod 2, a hand wheel 3 and a lifting plate slot 4. The outer wall of the mounting base 1 is provided with a threaded rod 2, the top of the threaded rod 2 is fixedly connected with the hand wheel 3, and the outer wall of the threaded rod 2 is threadedly connected with the lifting plate slot 4 which is slidably connected with the outer wall of the mounting base 1;

[0041] The telescopic assembly includes a telescopic guide groove 5, a telescopic connecting rod 6, a telescopic guide column 7 and a limit sleeve 8. The outer wall of the lifting plate groove 4 is provided with a telescopic guide groove 5. The outer wall of the telescopic guide groove 5 is movably connected with a telescopic connecting rod 6 that is slidably connected to the outer wall of the mounting base 1. The connecting portion of the telescopic connecting rod 6 and the telescopic guide groove 5 is provided with a telescopic guide column 7. The outer portion of the telescopic connecting rod 6 is sleeved with a limit sleeve 8 that is fixedly connected to the outer wall of the mounting base 1.

[0042] The locking assembly includes a connecting hole plate 9, a clamp plate 10, a locking tooth plate 11, a connecting tooth ring 12 and a locking column 13. One end of the telescopic link 6 is fixedly connected to the connecting hole plate 9. The outer wall of the connecting hole plate 9 is movably connected to the clamp plate 10 screwed to the outer wall of the mounting base 1. One end of the clamp plate 10 is fixedly connected to the locking tooth plate 11. The outer wall of the locking tooth plate 11 is meshed with the connecting tooth ring 12. The outer wall of the connecting tooth ring 12 is located at the top of the mounting base 1 and is fixedly connected to the locking column 13.

[0043] Furthermore, the top of the locking column 13 is fixedly connected to a ladder base 14, the top edge of the ladder base 14 is fixedly connected to a connecting column 15, a mounting column 16 is arranged above the connecting column 15, the outer portion of the mounting column 16 is sleeved with a connecting frame 17 fixedly connected to the top of the connecting column 15, the top of the ladder base 14 is located on one side of the connecting column 15 and is fixedly connected to a ladder body 18, the top edge of the ladder body 18 is fixedly connected to a guardrail 19, and the outer wall of the guardrail 19 is slidably connected to a safety frame 20.

[0044] Furthermore, four groups of telescopic guide grooves 5 are provided, and the positional relationship of the four groups of telescopic guide grooves 5 is symmetrical with respect to the lifting plate groove 4. The telescopic guide grooves 5 are inclined, and the telescopic connecting rod 6 forms a sliding structure through the lifting plate groove 4 and the telescopic guide groove 5 and the limiting sleeve 8. By providing four groups of telescopic guide grooves 5, it is beneficial for the lifting plate groove 4 to slide and drive the four groups of telescopic guide grooves 5 to slide vertically synchronously, and then the telescopic guide grooves 5 slide through the telescopic guide column 7 to drive the telescopic connecting rod 6 to slide along the inner wall of the limiting sleeve 8, thereby realizing the control operation of the synchronous sliding of the four groups of telescopic connecting rods 6.

[0045] Furthermore, two groups of pliers 10 are provided, and the positional relationship of the two groups of pliers 10 is symmetrical with respect to the telescopic connecting rod 6. The pliers 10 form a rotating structure with the mounting base 1 through the telescopic connecting rod 6 and the connecting hole plate 9. The locking tooth plate 11 forms a locking structure between the pliers 10 and the connecting tooth ring 12. By providing two groups of pliers 10, it is beneficial for the telescopic connecting rod 6 to slide through the connecting hole plate 9 to drive the two groups of pliers 10 to rotate relative to each other. The rotation of the pliers 10 drives the locking tooth plate 11 to engage with the connecting tooth ring 12 on the outer wall of the locking column 13. Through the locking operation of the four groups of locking columns 13, the stable installation operation of the mounting base 1 and the ladder base 14 is achieved.

[0046] Furthermore, the connecting frame 17 includes a limiting guide rod 1701, a return spring 1702, a lifting slider 1703, a lifting plate 1704, a connecting rod 1705, a locking guide block 1706, a locking guide rod 1707, abutting slider 1708, a fixed abutting block 1709, a locking slider 1710 and a locking groove 1711. The interior of the connecting frame 17 is located on the inner wall of the mounting column 16 and is fixedly connected to the limiting guide rod 1701. The outer side of the limiting guide rod 1701 is provided with a return spring 1702. The return spring The top of 1702 is fixedly connected with a lifting slider 1703 that is slidably connected to the outer wall of the limiting guide rod 1701, and the top of the lifting slider 1703 is fixedly connected with a lifting plate 1704 that extends to the outside of the mounting column 16. The side wall of the lifting slider 1703 is screwed with a connecting rod 1705, and the bottom end of the connecting rod 1705 is screwed with a locking guide block 1706. The connecting portion of the locking guide block 1706 and the mounting column 16 is provided with a locking guide rod 1707, and the bottom end of the locking guide block 1706 is fixedly connected with abutting slider 1706. 708, the abutting surface of the abutting slider 1708 abuts against a fixed abutment block 1709 fixedly connected to the top of the connecting column 15, and one end of the abutting slider 1708 away from the fixed abutment block 1709 is fixedly connected to a clamping slider 1710 slidably connected to the bottom of the mounting column 16, and one end of the clamping slider 1710 is located on the inner wall of the connecting frame 17 and has a clamping groove 1711. By setting the connecting frame 17, it is beneficial to drive the abutting slider 1708 and the fixed abutment block 1709 through the self-gravity of the mounting column 16 The four groups of abutting sliders 1708 are driven to slide along the outer wall of the engaging guide rod 1707 through the inclined fixed abutting block 1709. The abutting slider 1708 slides through the connecting rod 1705 to drive the lifting slider 1703 to overcome the elastic force of the return spring 1702 and slide along the outer wall of the limiting guide rod 1701. At the same time, the sliding of the abutting slider 1708 drives the engaging slider 1710 to engage with the engaging groove 1711 on the inner wall of the connecting frame 17, thereby realizing the automatic splicing operation of the connecting column 15 and the installing column 16.

[0047] Furthermore, four groups of abutment sliders 1708 are provided, and the position relationship of the four groups of abutment sliders 1708 is distributed in an equiangular circle with respect to the fixed stop block 1709. The contact surface between the abutment slider 1708 and the fixed stop block 1709 is an inclined surface. By providing four groups of abutment sliders 1708, it is beneficial to drive the abutment slider 1708 and the fixed stop block 1709 to fit together through the own gravity of the mounting column 16. The four groups of abutment sliders 1708 are driven by the inclined fixed stop block 1709 to slide along the outer wall of the engaging guide rod 1707, thereby realizing the control operation of the synchronous sliding of the four groups of abutment sliders 1708.

[0048] Furthermore, the engaging slider 1710 forms an engaging structure with the engaging groove 1711 through the abutting slider 1708, and the lifting slider 1703 forms a sliding structure with the limiting guide rod 1701 through the connecting rod 1705 and the engaging guide block 1706, which is conducive to the sliding of the abutting slider 1708 through the connecting rod 1705 to drive the lifting slider 1703 to overcome the elastic force of the return spring 1702 and slide along the outer wall of the limiting guide rod 1701. At the same time, the sliding of the abutting slider 1708 drives the engaging slider 1710 to engage with the engaging groove 1711 on the inner wall of the connecting frame 17, thereby realizing the automatic splicing operation of the connecting column 15 and the installing column 16.

[0049] Furthermore, the safety frame 20 includes a sliding plate 2001, a safety rope 2002, a connecting chute 2003, a connecting column 2004, a telescopic connecting block 2005, an abutment block 2006, an active orifice plate 2007, a connecting rotating plate 2008, a driven orifice plate 2009, a working spring 2010 and a roller 2011. The outer wall of the safety frame 20 is slidably connected with the sliding plate 2001, the top of the sliding plate 2001 is fixedly connected with the safety rope 2002, and the outer wall edge of the sliding plate 2001 is provided with a connecting The inclined groove 2003 is connected to the inner wall of the inclined groove 2003 in a movable manner with a connecting column 2004, the bottom end of the connecting column 2004 is fixedly connected to a telescopic connecting block 2005 that is slidably connected to the outer wall of the safety frame 20, the outer wall of the telescopic connecting block 2005 is fixedly connected to an abutment block 2006 that fits the outer wall of the guardrail 19, one end of the telescopic connecting block 2005 is fixedly connected to an active orifice plate 2007, the outer wall of the active orifice plate 2007 is movably connected to a connecting rotating plate 2008 that is rotatably connected to the outer wall of the safety frame 20, and the connecting rotating plate One end of 2008 is movably connected with a driven hole plate 2009 which is slidably connected to the inner wall of the safety frame 20. A working spring 210 is provided at the connection portion between the driven hole plate 2009 and the safety frame 20. A roller 211 is screwed to the side wall of the driven hole plate 2009 away from the working spring 210. By providing the safety frame 20, it is beneficial for the sliding slide 2001 to slide and drive the two sets of connecting inclined grooves 2003 to slide synchronously, so that the connecting inclined grooves 2003 slide through the connecting column 2004 to drive the telescopic connecting block 2005 to slide along the connecting column 2004. The outer wall of the safety frame 20 slides, and the sliding of the telescopic connecting block 2005 drives the two sets of active orifice plates 2007 to slide synchronously, thereby causing the active orifice plate 2007 to slide and drive the connecting rotating plate 2008 to rotate. The connecting rotating plate 2008 rotates and drives the roller 2011 to overcome the elastic force of the working spring 2010 and slide along the outer wall of the safety frame 20 through the driven orifice plate 2009. At the same time, the sliding of the telescopic connecting block 2005 drives the abutment block 2006 to fit with the guardrail 19, thereby realizing the safety protection operation for the construction personnel when using the ladder.

[0050] Furthermore, the sliding plate 2001 forms a sliding structure with the safety frame 20 through the safety rope 2002, and two groups of connecting inclined grooves 2003 are provided. The positional relationship of the two groups of connecting inclined grooves 2003 is symmetrical with respect to the sliding plate 2001. The telescopic connecting block 2005 forms a sliding structure with the safety frame 20 through the connecting inclined grooves 2003, which is conducive to the sliding of the sliding plate 2001 to drive the two groups of connecting inclined grooves 2003 to slide synchronously, so that the sliding of the connecting inclined grooves 2003 drives the telescopic connecting block 2005 to slide along the outer wall of the safety frame 20 through the connecting column 2004, thereby realizing the control operation of the sliding of the telescopic connecting block 2005.

[0051] Furthermore, two groups of active orifice plates 2007 are provided, and the positional relationship of the two groups of active orifice plates 2007 is symmetrical with respect to the telescopic connecting block 2005. The connecting rotating plate 2008 forms a rotating structure with the safety frame 20 through the telescopic connecting block 2005 and the active orifice plate 2007, and the roller 2011 forms a sliding structure with the safety frame 20 through the connecting rotating plate 2008 and the driven orifice plate 2009, which is conducive to the sliding of the telescopic connecting block 2005 to drive the two groups of active orifice plates 2007 to slide synchronously, and then the sliding of the active orifice plate 2007 drives the connecting rotating plate 2008 to rotate, and the rotation of the connecting rotating plate 2008 drives the roller 2011 to overcome the elastic force of the working spring 2010 and slide along the outer wall of the safety frame 20 through the driven orifice plate 2009, thereby realizing the sliding control operation of the roller 2011.

[0052] like Figure 1 As shown, the attached clamp-shaped locking device for the safety ladder of the bridge cylindrical pier, when in use, first, the locking column 13 at the bottom end of the ladder base 14 is locked, and the construction personnel turn the hand wheel 3, and the rotation of the hand wheel 3 drives the lifting plate slot 4 to slide vertically along the installation base 1 through the threaded rod 2, so that the sliding of the lifting plate slot 4 drives the four groups of telescopic guide grooves 5 to slide vertically synchronously, and then the telescopic guide groove 5 slides through the telescopic guide column 7 to drive the telescopic connecting rod 6 to slide along the inner wall of the limiting sleeve 8, and the telescopic connecting rod 6 slides through the connecting hole plate 9 to drive the two groups of clamp plates 10 to rotate relative to each other, and the rotation of the clamp plate 10 drives the locking tooth plate 11 to engage with the connecting tooth ring 12 on the outer wall of the locking column 13, and the locking operation of the four groups of locking columns 13 is realized. Stable installation operation of the installation base 1 and the ladder base 14 is achieved.

[0053] Next, for the splicing operation of the connecting column 15 and the installing column 16, the construction personnel place the installing column 16 in the connecting frame 17 at the top of the connecting column 15, and drive the abutting slider 1708 to fit with the fixed abutment block 1709 through the self-gravity of the installing column 16, and drive the four groups of abutting sliders 1708 to slide along the outer wall of the engaging guide rod 1707 through the inclined fixed abutment block 1709, and the abutting slider 1708 slides through the connecting rod 1705 to drive the lifting slider 1703 to overcome the elastic force of the return spring 1702 and slide along the outer wall of the limiting guide rod 1701. At the same time, the sliding of the abutting slider 1708 drives the engaging slider 1710 to engage with the engaging groove 1711 on the inner wall of the connecting frame 17, thereby realizing the automatic splicing operation of the connecting column 15 and the installing column 16.

[0054] Finally, safety protection operations are performed on the construction workers. The construction workers wear safety ropes 2002. When a safety accident occurs, the construction workers drive the sliding plate 2001 to slide along the outer wall of the safety frame 20 through the safety rope 2002. The sliding of the sliding plate 2001 drives the two sets of connecting inclined grooves 2003 to slide synchronously, so that the connecting inclined grooves 2003 slide through the connecting columns 2004 to drive the telescopic connecting block 2005 to slide along the outer wall of the safety frame 20. The sliding of the telescopic connecting block 2005 drives the two sets of active orifice plates 2007 to slide synchronously, and then the active orifice plate 2007 slides to drive the connecting rotating plate 2008 to rotate. The connecting rotating plate 2008 rotates and drives the roller 211 to overcome the elastic force of the working spring 2010 and slide along the outer wall of the safety frame 20 through the driven orifice plate 2009. At the same time, the sliding of the telescopic connecting block 2005 drives the abutment block 2006 to fit with the guardrail 19, thereby realizing safety protection operations for the construction workers when using ladders.

[0055] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A clamp-shaped locking device attached to a safety ladder of a bridge cylindrical pier, comprising a mounting base and a locking mechanism arranged on the top of the mounting base, characterized in that: The locking mechanism comprises a lifting assembly, a telescopic assembly and a locking assembly; The lifting assembly comprises a threaded rod, a hand wheel and a lifting plate slot, the outer wall of the mounting base is provided with a threaded rod, the top end of the threaded rod is fixedly connected to the hand wheel, and the outer wall of the threaded rod is threadedly connected to the lifting plate slot slidably connected to the outer wall of the mounting base; The telescopic assembly includes a telescopic guide groove, a telescopic connecting rod, a telescopic guide column and a limit sleeve. The outer wall of the lifting plate groove is provided with a telescopic guide groove. The outer wall of the telescopic guide groove is movably connected with a telescopic connecting rod slidably connected with the outer wall of the mounting base. The connecting part of the telescopic connecting rod and the telescopic guide groove is provided with a telescopic guide column. The outer part of the telescopic connecting rod is sleeved with a limit sleeve fixedly connected with the outer wall of the mounting base. The locking assembly comprises a connecting hole plate, a clamp plate, a locking tooth plate, a connecting tooth ring and a locking column, one end of the telescopic connecting rod is fixedly connected to the connecting hole plate, the outer wall of the connecting hole plate is movably connected to the clamp plate screwed to the outer wall of the mounting base, one end of the clamp plate is fixedly connected to the locking tooth plate, the outer wall of the locking tooth plate is meshed with a connecting tooth ring, the outer wall of the connecting tooth ring is fixedly connected to the locking column, and the locking column is located at the top of the mounting base; The telescopic guide grooves are provided with four groups, and the positions of the four groups of telescopic guide grooves are symmetrical with respect to the lifting plate grooves. The telescopic guide grooves are inclined, and the telescopic connecting rod forms a sliding structure through the lifting plate grooves and the telescopic guide grooves and the limiting sleeve.

2. The clamp-type locking device for the safety ladder attached to a bridge cylindrical pier according to claim 1 is characterized in that: The top of the locking column is fixedly connected to the ladder base, the top edge of the ladder base is fixedly connected to the connecting column, a mounting column is arranged above the connecting column, the outer portion of the mounting column is sleeved with a connecting frame fixedly connected to the top of the connecting column, the top of the ladder base is located on one side of the connecting column and is fixedly connected to a ladder body, the top edge of the ladder body is fixedly connected to a guardrail, and the outer wall of the guardrail is slidably connected to a safety frame.

3. The clamp-type locking device attached to a bridge cylindrical pier safety ladder according to claim 1 is characterized in that: The pliers are provided with two groups, and the positional relationship of the two groups of pliers is symmetrical with respect to the telescopic connecting rod. The pliers form a rotating structure with the mounting base through the telescopic connecting rod and the connecting hole plate, and the locking tooth plate forms a locking structure with the pliers and the connecting tooth ring.

4. The clamp-type locking device attached to a bridge cylindrical pier safety ladder according to claim 2 is characterized in that: The top end of the sliding panel also is provided with an interlocking groove, and the interlocking groove is provided with a toothed connecting strip which is cooperatively connected with the toothed connecting strip.

5. The clamp-type locking device attached to the safety ladder of a bridge cylindrical pier according to claim 4 is characterized in that: The abutting sliding blocks are provided in four groups, and the positional relationship of the four groups of abutting sliding blocks is distributed in an equiangular circle with respect to the fixed abutting block, and the contact surface between the abutting sliding blocks and the fixed abutting block is an inclined surface.

6. The clamp-type locking device attached to the safety ladder of a bridge cylindrical pier according to claim 5 is characterized in that: The engaging slider forms an engaging structure by abutting against the slider and the engaging groove, and the lifting slider forms a sliding structure by connecting the connecting rod and the engaging guide block and the limiting guide rod.

7. The clamp-type locking device attached to a bridge cylindrical pier safety ladder according to claim 2 is characterized by: The safety frame comprises a sliding slide, a safety rope, a connecting oblique groove, a connecting column, a telescopic connecting block, an abutment block, an active orifice plate, a connecting rotating plate, a driven orifice plate, a working spring and a roller, the outer wall of the safety frame is slidably connected with the sliding slide, the top of the sliding slide is fixedly connected with the safety rope, the outer wall edge of the sliding slide is provided with a connecting oblique groove, the inner wall of the connecting oblique groove is movably connected with a connecting column, the bottom end of the connecting column is fixedly connected with the telescopic connecting block slidably connected with the outer wall of the safety frame, the outer wall of the telescopic connecting block is fixedly connected with the abutment block that fits with the outer wall of the guardrail, one end of the telescopic connecting block is fixedly connected with the active orifice plate, the outer wall of the active orifice plate is movably connected with a connecting rotating plate rotated with the outer wall of the safety frame, one end of the connecting rotating plate is movably connected with the driven orifice plate slidably connected with the inner wall of the safety frame, the connecting part of the driven orifice plate and the safety frame is provided with a working spring, and the side wall of the driven orifice plate away from the working spring is rotated with a roller.

8. The clamp-type locking device attached to a bridge cylindrical pier safety ladder according to claim 7, characterized in that: The sliding slide forms a sliding structure between the safety rope and the safety frame, two groups of connecting bevel grooves are provided, and the positional relationship of the two groups of connecting bevel grooves is symmetrical with respect to the sliding slide, and the telescopic connecting block forms a sliding structure between the connecting bevel grooves and the safety frame.

9. The clamp-type locking device attached to the safety ladder of a bridge cylindrical pier according to claim 8, characterized in that: The active orifice plates are provided with two groups, and the positional relationship of the two groups of active orifice plates is symmetrical with respect to the telescopic connecting block. The connecting rotating plate forms a rotating structure with the safety frame through the telescopic connecting block and the active orifice plate, and the roller forms a sliding structure with the safety frame through the connecting rotating plate and the driven orifice plate.

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