High-altitude operation anti-falling guide rail steering and changing device

Abstract

The invention relates to the technical field of anti-falling guide rails, in particular to a high-altitude operation anti-falling guide rail steering and changing device which comprises a base assembly and a rotary guide rail assembly, the base assembly comprises a base body with a through hole, a rotatable rotating shaft is arranged in the through hole, and the top of the rotating shaft is fixedly connected with the rotary guide rail assembly. The rotating guide rail assembly comprises a straight guide rail, a right side arc guide rail and a left side arc guide rail, the right side arc guide rail and the left side arc guide rail are arranged on the two sides, connectors of the rotating guide rail assembly are in a convex arc shape, a plurality of outer guide rails with concave arc connectors are arranged on the outer edge of the base assembly, and a driving block moving vertically is arranged in a rotating shaft and connected with a limiting mechanism capable of stretching out and drawing back in the radial direction through a linkage mechanism. According to the high-altitude operation anti-falling guide rail steering and transferring device, the target outer guide rail is in butt joint with the connector of the rotating guide rail assembly by rotating the rotating shaft, the limiting mechanism is triggered by pressing the driving block in two steps to be locked into the second space of the side wall of the rotating shaft to achieve self-locking, and self-locking can be relieved by pressing the driving block again.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-falling guide rails, in particular to a high-altitude operation anti-falling guide rail steering and track changing device. Background Art

[0002] In high-altitude operations on energy infrastructure such as nuclear power and high-voltage power transmission (e.g., transmission line tower maintenance and nuclear reactor casing inspection), workers need to move between complex framework structures tens of meters high. This type of environment presents two core challenges: Multi-directional access requirements: Nuclear power equipment often uses a three-dimensional mesh support structure, and the operation points are distributed on different planes of the tower (such as horizontal beams, vertical columns, and diagonal supports). The anti-fall rail system is required to be able to achieve multi-angle track switching such as horizontal, vertical, and diagonal. Extreme safety requirements: Nuclear power facilities have a "zero tolerance" for fall risks. Existing segmented guide rails require manual disassembly and assembly of connectors or the use of bulky articulated turntables. This operation is not only time-consuming (single switching takes >5 minutes), but is also prone to hidden dangers such as interface loose connections and locking failures under strong winds and vibration conditions.

[0003] The current mainstream solutions have significant flaws: Fixed guide rails cannot adapt to the needs of multi-directional track changes, resulting in the need to repeatedly install multiple sets of guide rails on the same working surface, increasing the equipment load (the additional weight of a single tower is ≥ 200kg); While simple turntable devices can rotate and change direction, they lack reliable locking mechanisms. For example, document CN212141203U, while capable of turning, lacks a locking mechanism, posing a risk of backlash. Furthermore, when operating in high-radiation areas of nuclear power plants, where protective clothing is required, the probability of bolt loosening increases by 37% when using bolts (cited in the "White Paper on Safety of High-Altitude Work in Nuclear Power Plants," 2023). Furthermore, these devices lack the ability to quickly lock and unlock with a single button.

[0004] Therefore, there is an urgent need for an anti-fall steering device that combines rapid track change accuracy, mechanical reliable self-locking and lightweight integrated design to meet the stringent requirements of nuclear power engineering for high-altitude operation safety and efficiency.

[0005] To this end, we propose a high-altitude work anti-fall guide rail steering track changing device. Summary of the Invention

[0006] One of the technical problems to be solved by this application is that there is an urgent need for an anti-fall steering device that combines rapid track change accuracy, mechanical reliable self-locking and lightweight integrated design to meet the stringent requirements of nuclear power engineering for high-altitude work safety and efficiency.

[0007] To solve the above technical problems, the embodiment of the present application provides a high-altitude work anti-fall guide rail steering and track changing device, including a base assembly and a rotating guide rail assembly. The base assembly includes a base body with a through hole, a rotatable rotating shaft is provided in the through hole, and the top of the rotating shaft is fixedly connected to the rotating guide rail assembly; the rotating guide rail assembly includes a straight guide rail and a right arc guide rail and a left arc guide rail on both sides, the interface of which is an outward convex arc shape, and the outer edge of the base assembly is provided with multiple outer guide rails with inward concave arc interfaces; A vertically moving drive block is provided inside the rotating shaft, and the drive block is connected to a radially retractable limit mechanism through a linkage mechanism; By rotating the rotating shaft, the target outer guide rail is docked with the interface of the rotating guide rail assembly, and by pressing the drive block, the limit mechanism is triggered in two steps to lock into the space 2 on the side wall of the rotating shaft to achieve self-locking. Pressing the drive block again can release the self-locking.

[0008] In some embodiments, a second spring is provided at the bottom of the driving block, with ears fixed on both sides thereof, and the lower side of the ears abuts against a first limiting block fixed to the inner wall of the rotating shaft.

[0009] In some embodiments, the linkage mechanism includes a side plate 1 symmetrically hinged on both sides of the driving block, an axis 1 connecting the side plate 1, a connecting rod 1 hinged to the axis 1, and an axis 2 connected to the inner side of the connecting rod 1.

[0010] In some embodiments, the limiting mechanism includes a side plate 2 connected to the shaft 2, a connecting block 1 fixed on the side plate 2, a space 3 with a top rod is provided in the connecting block 1, and a plurality of spaces 2 for accommodating the connecting block 1 are evenly distributed circumferentially on the side wall of the rotating shaft, and a limiting block 2 is provided in the space 2.

[0011] In some embodiments, a push rod and a spring 1 are provided in space 3, and the two sides of the push rod are hinged to the connecting rod 2 through axis 4, and the outer side of the connecting rod 2 is connected to the radially retractable connecting block 2 through axis 3.

[0012] In some embodiments, the right circular arc guide rail, the left circular arc guide rail and the straight guide rail of the rotating guide rail assembly are fixedly connected by a connecting plate, and the interfaces of the three are arranged in the same plane.

[0013] In some embodiments, a protrusion and a concave surface are provided on the edge of the base body, and the three together form a cavity for accommodating the rotating guide rail assembly.

[0014] In some embodiments, the outer guide rail is fixed to the outward extending plate on the outer edge of the base body through a stepped plate and bolts.

[0015] In some embodiments, when the driving block is pressed for the first time, the connecting block 1 extends into the space 2, causing the spring 1 to push the push rod, triggering the connecting rod 2 to lock the connecting block 2 into a side wall of the space; When the driving block is pressed again, the push rod compresses spring 1, triggering connecting rod 2 to drive connecting block 2 to retract, thereby releasing the lock on connecting block 1.

[0016] In some embodiments, the rotation axis rotates by forty-five degrees each time, so that the straight guide rail or the right circular arc guide rail and the left circular arc guide rail are docked with the outer guide rail in the selected direction.

[0017] The present invention has at least the following beneficial effects: 1. Significantly improve the safety and convenience of track change operations: Through the innovative mechanical linkage self-locking mechanism, especially based on the synergy of the drive block, linkage mechanism, connecting block one and connecting block two set inside the rotating shaft, a "one-button dual-function" operation is achieved. The staff only needs to rotate the rotating shaft to a specified angle such as forty-five or ninety degrees with one hand, and press the drive block once to instantly lock the position of the rotating guide rail assembly, so that its interface is firmly docked with the interface of the outer guide rail and completes reliable self-locking, effectively preventing the risk of falling caused by accidental rotation or detachment; when the track needs to be changed, only the same drive block needs to be pressed again to easily release the self-locking state for rotation adjustment. The entire operation is simple, fast, and controllable with one hand, which greatly reduces the difficulty and error rate of complex operations at high altitudes and ensures the safety of personnel.

[0018] 2. Optimize the structural design to enhance interface reliability and equipment durability: The interface design of the rotating guide rail assembly, including the right-side arc guide rail, the left-side arc guide rail and the straight guide rail, is an outward convex arc shape, which precisely matches the inward concave arc shape of the outer guide rail interface fixed to the outer edge of the base assembly. This design ensures that after the rotating shaft drives the guide rail to rotate into place, the interface can achieve smooth and precise automatic guide alignment and engagement, reducing docking deviation and providing a smoother and more stable sliding channel. At the same time, the radial locking structure formed by space two and limit block two, as well as the anti-retraction lock formed by connecting block two, significantly improves the mechanical strength and impact resistance of the locked state through a solid mechanical connection rather than relying solely on friction or simple buckles to bear the load, thereby enhancing the long-term reliability and durability of the equipment in harsh high-altitude environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 It is a schematic diagram of the overall structure of the base assembly of the present invention; Figure 4 The rotary guide rail assembly of the present invention; Figure 5 It is a top view and AA cross-sectional view of the overall structure of the present invention; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 It is a front view and CC cross-sectional view of the overall structure of the present invention; Figure 8 for Figure 7 Enlarged view of point D in the middle; Figure 9 for Figure 7 Enlarged view of point E in the middle; Figure 10 It is a three-dimensional cross-sectional view of the overall structure of the present invention; Figure 11 for Figure 10 Enlarged view of point F in the middle; Figure 12 is a three-dimensional cross-sectional view of the base assembly of the present invention; Figure 13 for Figure 12 Enlarged view of point G in the middle.

[0020] In the figure: 100 - base assembly; 101 - base body; 102 - protrusion; 103 - concave surface; 104 - outer guide rail; 105 - stepped plate; 106 - overhanging plate; 107 - bolt; 108 - rotating shaft; 109 - driving block; 110 - through hole; 111 - limit block 1; 112 - ear piece; 113 - space 1; 114 - side plate 1; 115 - shaft 1; 116 - connecting rod 1; 117 - shaft 2; 118 - side plate 2; 119-Connecting block one; 120-Top rod; 121-Spring one; 122-Space two; 123-Limiting block two; 124-Spring two; 125-Space three; 126-Connecting block two; 127-Side plate three; 128-Axis three; 129-Connecting rod two; 130-Side plate four; 131-Axis four; 200-Rotating guide rail assembly; 201-Right circular arc guide rail; 202-Left circular arc guide rail; 203-Straight guide rail; 204-Connecting plate. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1, please refer to Figures 1-13The present invention provides a technical solution: a guide rail steering and track changing device for preventing falling at height, comprising a base assembly 100 and a rotating guide rail assembly 200. The base assembly 100 comprises a base body 101 with a through hole 110, a rotatable rotating shaft 108 being provided in the through hole 110, and the top of the rotating shaft 108 being fixedly connected to the rotating guide rail assembly 200; the rotating guide rail assembly 200 comprises a straight guide rail 203 and a right circular arc guide rail 201 and a left circular arc guide rail 202 on both sides, the interfaces of which are convex arc-shaped, and a plurality of outer guide rails 104 with concave arc interfaces are provided on the outer edge of the base assembly 100; A vertically movable driving block 109 is provided inside the rotating shaft 108, and the driving block 109 is connected to a radially retractable limiting mechanism through a linkage mechanism; By rotating the rotating shaft 108, the target outer guide rail 104 is docked with the interface of the rotating guide rail assembly 200, and by pressing the driving block 109, the limiting mechanism is triggered in two steps to lock into the space 2 122 on the side wall of the rotating shaft 108 to achieve self-locking. Pressing the driving block 109 again can release the self-locking.

[0023] When the driving block 109 is pressed for the first time, the connecting block 119 extends into the space 2 122, causing the spring 121 to push the push rod 120, triggering the connecting rod 2 129 to lock the connecting block 2 126 into the side wall of the space 1 113; When the driving block 109 is pressed again, the push rod 120 compresses the spring 121 to trigger the connecting rod 2 129 to drive the connecting block 2 126 to retract, thereby releasing the lock on the connecting block 119.

[0024] Specifically, the purpose of this design is to realize a double-press mechanical interlocking mechanism. The first press of the drive block 109 triggers the hard lock. The drive block 109 presses down the compression spring 2 124. The linkage mechanism drives the connecting block 119 to extend radially into the space 2 122. The spring 121 in the space 3 125 pushes the push rod 120 to move outward. The push rod 120 drives the connecting rod 2 129 to rotate through the shaft 4 131. The connecting rod 2 129 forces the connecting block 2 126 to be horizontally stuck in the side wall limit groove of the space 1 113, forming a physical interlock between the connecting block 119 and the connecting block 2 126.

[0025] Press the driving block 109 again to achieve safe unlocking. The driving block 109 is pressed down for the second time to continue to compress the spring 2 124. The connecting block 119 moves inward in the space 2 122. The top rod 120 is blocked by the limiting block 2 123 to compress the spring 121. The connecting rod 2 129 rotates in the opposite direction to pull the connecting block 2 126 out of the limiting groove. The spring 2 124 resets and pushes the driving block 109 to rise. The connecting block 119 withdraws to the space 113 to release the lock.

[0026] Specifically, rotate the rotation axis 108 45 or 90 degrees clockwise or counterclockwise to align the straight guide rail 203, the right circular guide rail 201, and the left circular guide rail 202 with the target outer guide rail 104. Pressing the actuator block 109 for the first time locks the connecting block 126 to the side wall of space 113. Pressing the actuator block 109 a second time unlocks the side wall of space 113. In a nuclear power plant scenario, protective gear personnel can quickly complete this operation with a single finger.

[0027] Specifically, the core function of the connecting block 2 126 is to lock into the side wall of the space 113 to form a hard barrier to prevent retreat, and to form a double mechanical interlock with the connecting block 119. When unlocked, the priority exit ensures a safe reset sequence, and the interface has a precise matching mechanism.

[0028] The outer guide rail 104 has a concave interface, and the rotating guide rail assembly 200 has a convex interface, which can be automatically guided when rotated into place (the matching clearance is ≤0.5mm).

[0029] The springs work in coordination logic: spring one 121 ensures that the connecting block two 126 is locked in place; spring two 124 drives the mechanism to reset and cushion the impact.

[0030] It also has structural redundancy characteristics: the space 2 122 is evenly distributed with 8 locking positions (45° division), and the connecting block 1 19 and the connecting block 2 126 jointly bear vibration impact.

[0031] This device controls the mechanical sequence by double-pressing actuator block 109: the first press establishes a lock between connector block 119 and spacer 2 122, and a hard interlock between connector block 2 126 and spacer 113. A second press preferentially unlocks connector block 2 126 and simultaneously releases connector block 119. This ensures zero-error, safe operation of the anti-fall track change device in high-altitude nuclear power plant operations.

[0032] Example 2, please refer to Figure 1-12 The linkage mechanism includes a side plate 114 symmetrically hinged on both sides of the driving block 109, a shaft 115 connecting the side plate 114, a connecting rod 116 hinged to the shaft 115, and a shaft 2 117 connected to the inner side of the connecting rod 116.

[0033] A second spring 124 is provided at the bottom of the driving block 109 , with ears 112 fixed on both sides thereof. The lower side of the ears 112 abuts against a first limit block 111 fixed to the inner wall of the rotating shaft 108 .

[0034] Specifically, the purpose of this arrangement is that the side plate 114 is symmetrically hinged to the drive block 109, so as to ensure that the pressure under the drive block 109 is evenly transmitted to both sides, avoid unilateral load causing the mechanism to jam, and ensure the linearity of the pressing action.

[0035] Shaft 115 connects side plate 114 and connecting rod 116 to convert the vertical linear motion of driving block 109 into the rotational motion of connecting rod 116, thereby realizing the power direction conversion (Z-axis to radial direction).

[0036] The inner side of connecting rod 116 is hinged to shaft 2 117 , and its purpose is to amplify the small downward displacement of driving block 109 into the radial extension stroke of connecting block 119 through the lever amplification effect, so as to ensure that the lock tongue (connecting block 119 ) is completely embedded in space 2 122 .

[0037] The second spring 124 provides the driving block 109 with a restoring force (the restoring stroke is precisely controlled), buffers external impact loads, and prevents the mechanism from being damaged by overload.

[0038] The ear pieces 112 are fixed on both sides of the driving block 109 to disperse the concentrated stress of the spring 2 124 on the driving block 109 , establish a rigid contact surface with the limit block 1 111 , and ensure a stable force transmission path.

[0039] The limit block 111 is fixed to the inner wall of the rotating shaft 108 to limit the downward pressing end position of the driving block 109 (to prevent overtravel), withstand the impact load of the ear piece 112, and protect the structural integrity of the rotating shaft 108.

[0040] The symmetrical layout of the two ears 112 ensures that even if one ear 112 fails, the other side can still maintain 50% locking force. (ISO 14122-3 fall protection standard) The pre-compression of spring 2 124 initially maintains the upward position of the actuator 109 to prevent accidental unlocking caused by vibration. The articulation clearance between shaft 115 and connecting rod 1 116 allows for a 0.1mm dynamic tolerance to compensate for dimensional deformation caused by high temperature and vibration.

[0041] When spring 2 124 breaks, limit block 111 rigidly prevents drive block 109 from pressing down through ear piece 112, preventing accidental locking. The double-hinged design of side plate 114 ensures that even if one side of the hinge shaft breaks, the mechanism can still maintain the minimum safety locking function.

[0042] This linkage mechanism achieves efficient vertical to radial force transmission through a mechanical sequence of symmetrical articulation (side plate 114) → motion conversion (shaft 115) → lever amplification (connecting rod 116); spring 2 124 and limit block 111 form a two-way protection mechanism, which not only provides controllable elastic reset but also establishes a rigid anti-failure barrier, providing anti-fall and track change protection that complies with ASME / ISO standards for high-altitude operations in nuclear power plants.

[0043] Example 3, see Figure 1-12The limiting mechanism includes a side plate 118 connected to the second shaft 117, a connecting block 119 fixed on the side plate 118, a space 125 with a top rod 120 is provided in the connecting block 119, and a plurality of spaces 122 for accommodating the connecting block 119 are evenly distributed in the side wall of the rotating shaft 108 in an annular direction, and a limiting block 123 is provided in the space 122.

[0044] Specifically, this configuration aims to achieve the core goal of uniformly distributed spacers 122 around the circumference, providing omnidirectional locking adaptability. Spacer 122 has eight locking positions spaced 45° apart, covering horizontal, vertical, and diagonal operating angles. This ensures that connecting block 119 can precisely lock into the target position at any rotation angle (positioning error ≤ 0.5°). Load distribution is also enhanced. Once connecting block 119 extends into spacer 122, radial loads are borne by limit blocks 123, while adjacent spacers 122 share eccentric loads (measured distribution rate ≥ 60%).

[0045] Connecting block 119 acts as the main locking tongue embedded in space 2 122, bearing radial impact loads. Space 3 125 houses a built-in push rod 120, which transmits the elastic force of spring 121 to connecting rod 2 129, driving connecting block 2 126 to lock laterally into the sidewall of space 1 113. Stopper 2 123 defines the end point of travel for connecting block 119 and serves as a force transmission fulcrum for push rod 120.

[0046] The purpose of the collaboration between shaft 2 117 and side plate 2 118 is motion conversion. Shaft 2 117 converts the rotational motion of connecting rod 116 into radial linear motion of side plate 2 118, thereby reducing friction losses. To compensate for thermal deformation, a 0.05mm dynamic clearance is reserved between side plate 2 118 and shaft 2 117 to compensate for thermal deformation of rotating shaft 108 (ΔT ≥ 80°C) under nuclear power plant operating conditions.

[0047] The limiting mechanism realizes a three-level protection mechanism: the first level physical anchoring: the connecting block 119 is precisely embedded in the space 2 122; the second level lateral locking: the top rod 120 relies on the limiting block 2 123 to trigger the connecting block 2 126 to lock into the space 1 113; the third level continuous retention: the spring 121 maintains the thrust of the top rod 120 to offset the vibration of the virtual position.

[0048] Example 4, see Figure 1-12 The space three 125 is provided with a push rod 120 and a spring 121. The two sides of the push rod 120 are hinged to the connecting rod 2 129 through the shaft four 131. The outer side of the connecting rod 2 129 is connected to the radially retractable connecting block 2 126 through the shaft three 128.

[0049] Specifically, this design aims to ensure the central function of the mechanical control system. Space Three 125 integrates the energy storage function of Spring One 121, the force transmission function of Push Rod 120, and the switching function of Connecting Rod Two 129 into a single cavity, converting the vertical spring force into a horizontal locking force. As an anti-vibration mechanism, Spring One 121 maintains a pre-compression of 3±0.2mm, maintaining close contact between Push Rod 120 and Stop Block Two 123. The dual-function structure of Push Rod 120 is designed to receive spring force at its upper end and connect to Shaft Four 131 at its lower end to drive the connecting rod mechanism.

[0050] Example 5, see Figure 1-12 The right circular arc guide rail 201, the left circular arc guide rail 202 and the straight guide rail 203 of the rotating guide rail assembly 200 are fixedly connected through a connecting plate 204, and the interfaces of the three are arranged in the same plane.

[0051] Specifically, this design aims to evenly distribute dynamic loads. The right-side circular guide rail 201, the left-side circular guide rail 202, and the straight guide rail 203 are rigidly connected to form a single frame via connecting plates 204. Impact loads from movement are dispersed through connecting plates 204, preventing overload and deformation of a single guide rail. The anti-sway stabilization mechanism and the coplanarity tolerance of the three guide rail interfaces of ≤0.05mm eliminate the risk of misalignment associated with traditional split guide rails (displacement differences under vibration conditions can result in an 8mm sticking gap).

[0052] The right circular guide rail 201 covers a 60° clockwise rotation range, with a curvature radius of R = 300mm (adapting to the angle of the nuclear power tower ladder). The left circular guide rail 202 covers a 60° counterclockwise rotation range, and its symmetrical arrangement with the right circular guide rail 201 ensures balanced bidirectional operation. The centrally located straight guide rail 203 provides a linear reference section, with a length of 150mm covering the standard step distance. The integrally welded connecting plate 204 maintains the relative position accuracy of the three guide rails.

[0053] Example 6, see Figure 1-12 The edge of the base body 101 is provided with a protrusion 102 and a concave surface 103 , which together form a cavity for accommodating the rotating guide rail assembly 200 .

[0054] Specifically, protrusion 102 provides a radial hard limit for the rotating guide rail assembly 200, bearing lateral impact forces during operation. Concave surface 103 forms the guide rail mounting datum surface (flatness ≤ 0.1 mm) and accommodates rotating grease. The combined cavity of protrusion 102 and concave surface 103 creates a three-degree-of-freedom constraint: in the Z axis, concave surface 103 supports vertical loads, while in the X / Y axes, protrusion 102 limits horizontal displacement.

[0055] Example 7, see Figure 1-12The outer guide rail 104 is fixed to the outward extension plate 106 on the outer edge of the base body 101 through a stepped plate 105 and bolts 107. The rotation axis 108 rotates by 45 degrees each time, so that the straight guide rail 203 or the right circular arc guide rail 201 and the left circular arc guide rail 202 dock with the outer guide rail 104 in the selected direction.

[0056] Specifically, the core purpose of the 45-degree indexing rotation is precise path switching. The rotating shaft 108 rotates at a fixed 45-degree indexing, ensuring that the straight guide rail 203, the right circular guide rail 201, and the left circular guide rail 202 are precisely aligned with the outer guide rail 104 in different orientations. The 360-degree rotation range provides eight standard workstations (45° x 8), covering three typical paths in nuclear power plants: horizontal tower inspections, inclined ladder climbing, and equipment compartment transitions.

[0057] The multi-level positioning of the stepped plate 105 provides lateral shoulder restraint for radial displacement, while the trapezoidal groove structure resists shear (bolts 107 bear only tensile loads). Bolts 107 are preloaded to prevent loosening. NASM 1311 nuclear-grade bolts 107, with a preload of 12 kN, maintain axial restraint and exhibit no loosening under vibration conditions (20 Hz). The overhang plate 106 optimizes load-bearing performance, and a stress diffusion design reduces bending stress.

[0058] The following combination Figures 1-13 Introduce the working process of this device: When the outer guide rail 104 on the left side needs to be docked with the outer guide rail 104 on the right side, the staff rotates the rotating shaft 108 by hand forty-five degrees counterclockwise, driving the straight guide rail 203 to rotate forty-five degrees counterclockwise, so that the interface of the straight guide rail 203 is docked with the inner end interface of the outer guide rail 104. At this time, the driving block 109 is pressed inward, and the driving block 109 drives the ear piece 112, the side plate 114, and the shaft 115 to move inward. The bottom of the driving block 109 compresses the spring 2 124, and the connecting rod 116 is wound around the inner side. The shaft 115 rotates inward, that is, the connecting rod 116 on the left rotates counterclockwise around the shaft 115, and the connecting rod 116 on the right rotates clockwise around the shaft 115. At this time, the outer side of the connecting rod 116 performs radial expansion movement on the shaft 2 117, the side plate 2 118, and the connecting block 119. The connecting rod 116 pushes the connecting block 119 through the channels on the left and right sides of the space 113 into the space 2 122. At this time, the spring 121 changes from a compressed state to an extended state, pushing the top When the rod 120 moves outward, the side plate 4 130 and the shaft 4 131 move outward together with the top rod 120. At this time, the inner side of the connecting rod 2 129 rotates inward around the shaft 4 131, that is, the connecting rod 2 129 on the left side moves counterclockwise around the shaft 4 131, and the connecting rod 2 129 on the right side moves clockwise around the shaft 4 131. At this time, the connecting rod 2 129 makes an outward radial movement with respect to the shaft 3 128, the side plate 3 127, and the connecting block 2 126. When the channels on the left and right sides of the space 3 125 of the connecting block 1 119 are When the position follows the connecting block 119 into the space 2 122, the connecting block 2 126 just extends out of the left and right channels of the space 3 125 and is stuck in the rotating shaft 108 and the left and right sides of the space 2 122 to prevent the connecting block 119 from retreating into the left and right channels of the space 1 113, forming a self-locking device. At this time, the push rod 120 extends out of the connecting block 119 and abuts against the limit block 2 123 of the space 2 122. At this time, the spring 2 124 has not been compressed to the limit state, and the connecting rod 1 116 has an angle greater than zero with the horizontal direction.

[0059] When the upper and lower outer guide rails 104 need to be docked, the self-locking contact must be made first. The specific operation is as follows: Press the driving block 109 inward again. The driving block 109 drives the ear piece 112, the side plate 114, and the shaft 115 to move inward. The bottom of the driving block 109 continues to compress the spring 2 124. At this time, the inner side of the connecting rod 116 rotates inward around the shaft 115, that is, the connecting rod 116 on the left rotates counterclockwise around the shaft 115, and the connecting rod 116 on the right rotates clockwise around the shaft 115. At this time, the outer side of the connecting rod 116 performs an outward radial movement to the outer side of the shaft 2 117, the side plate 2 118, and the connecting block 119. The connecting rod 116 pushes the connecting block 119 to pass through the left and right sides of the space 113. The passage enters the second space 122. At this time, the second connecting block 126 just extends out of the left and right channels of the third space 125 and is stuck in the rotating shaft 108 and the second space 122 and continues to move forward with the first connecting block 119. At this time, the ejector rod 120 changes from the state of extending the first connecting block 119 and abutting the second limit block 123 of the second space 122 to the state of continuing to move forward with the first connecting block 119. The spring 121 of the ejector rod 120 changes from the extended state to the compressed state, that is, the limit block 123 does not move while the ejector rod 120 moves inward. At this time, the side plate 4 130 and the shaft 4 131 move inward together with the ejector rod 120. At this time, the inner side of the connecting rod 2 129 is around The fourth shaft 131 performs an outward-bending rotational movement, that is, the second connecting rod 129 on the left side performs a clockwise movement around the fourth shaft 131, and the second connecting rod 129 on the right side performs a counterclockwise movement around the fourth shaft 131. At this time, the second connecting rod 129 performs an inward-contracting radial movement on the third shaft 128, the third side plate 127, and the second connecting block 126. When the positions of the channels on the left and right sides of the space 3 125 of the connecting block 119 follow the connecting block 119 to exit the space 2 122 and enter the channels on the left and right sides of the space 113 of the rotating shaft 108, the connecting block 2 126 changes from the state of extending from the channels on the left and right sides of the space 3 125 to the state of being stuck between the rotating shaft 108 and the space 2 122 on the left and right sides. Space three 125 abuts against rotating shaft 108 to form channels on both sides of space one 113; at this time, spring two 124 changes from a compressed state to an extended state, and the inner side of connecting rod one 116 rotates outward around shaft one 115, that is, the left connecting rod one 116 rotates clockwise around shaft one 115, and the right connecting rod one 116 rotates counterclockwise around shaft one 115. At this time, the outer side of connecting rod one 116 performs a radial inward movement relative to shaft two 117, side plate two 118, and connecting block one 119. When connecting blocks one 119 on both sides retreat into space one 113 and ear piece 112 abuts limit block one 111, the self-locking state is released.At this point, you need to manually rotate the rotating shaft 108 90 degrees clockwise and press the drive block 109. The subsequent self-locking action is the same as the process of docking the left outer guide rail 104 with the right outer guide rail 104. Similarly, when the upper outer guide rail 104 needs to be docked with the left outer guide rail 104, based on the previous docking operation of the upper and lower outer guide rails 104, you only need to release the self-locking and rotate it 45 degrees clockwise.

[0060] The convenience of this device is that the staff only needs to manually rotate the rotating shaft 108 and press the driving block 109 to complete the docking of the corresponding rails and complete the self-locking. Then press the driving block 109 to contact the self-locking, and then rotate the corresponding angle to complete the docking of the corresponding guide rails. The operation is simple and the safety performance is high.

[0061] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0062] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A high-altitude work anti-fall guide rail steering and track changing device, comprising a base assembly (100) and a rotating guide rail assembly (200), characterized in that: The base assembly (100) comprises a base body (101) with a through hole (110), a rotatable rotation shaft (108) being provided in the through hole (110), and the top of the rotation shaft (108) being fixedly connected to a rotation guide rail assembly (200); the rotation guide rail assembly (200) comprises a straight guide rail (203) and a right circular arc guide rail (201) and a left circular arc guide rail (202) on both sides, the interfaces of which are convex circular arcs, and a plurality of outer guide rails (104) with concave circular arc interfaces are provided on the outer edge of the base assembly (100); A vertically movable driving block (109) is provided inside the rotating shaft (108), and the driving block (109) is connected to a radially retractable limiting mechanism via a linkage mechanism; The outer guide rail (104) is docked with the interface of the rotating guide rail assembly (200) by rotating the rotating shaft (108), and the limiting mechanism is triggered in two steps by pressing the driving block (109) to lock into the second space (122) on the side wall of the rotating shaft (108) to achieve self-locking. Pressing the driving block (109) again can release the self-locking.

2. The anti-fall guide rail turning and track changing device for high-altitude work according to claim 1, characterized in that: A second spring (124) is provided at the bottom of the driving block (109), and ear pieces (112) are fixed on both sides thereof. The lower side of the ear piece (112) abuts against a first limiting block (111) fixed to the inner wall of the rotating shaft (108).

3. The anti-fall guide rail turning and track changing device for high-altitude work according to claim 1, characterized in that: The linkage mechanism includes a side plate 1 (114) symmetrically hinged on both sides of the driving block (109), a shaft 1 (115) connected to the side plate 1 (114), a connecting rod 1 (116) hinged to the shaft 1 (115), and a shaft 2 (117) on the inner side of the connecting rod 1 (116).

4. The anti-fall guide rail turning and track changing device for high-altitude work according to claim 3, characterized in that: The limiting mechanism includes a side plate 2 (118) connected to the shaft 2 (117), a connecting block 1 (119) fixed on the side plate 2 (118), a space 3 (125) with a top rod (120) is provided in the connecting block 1 (119), and a plurality of spaces 2 (122) for accommodating the connecting block 1 (119) are uniformly distributed in an annular direction on the side wall of the rotating shaft (108), and a limiting block 2 (123) is provided in the space 2 (122).

5. The anti-fall guide rail turning and track changing device for high-altitude work according to claim 4, characterized in that: A push rod (120) and a spring (121) are provided in the space three (125). Both sides of the push rod (120) are hinged to a connecting rod two (129) via an axis four (131). The outer side of the connecting rod two (129) is connected to a radially retractable connecting block two (126) via an axis three (128).

6. The anti-fall guide rail turning and track changing device for high-altitude work according to claim 1, characterized in that: The right circular arc guide rail (201), the left circular arc guide rail (202) and the straight guide rail (203) of the rotating guide rail assembly (200) are fixedly connected via a connecting plate (204), and the interfaces of the three are arranged in the same plane.

7. The anti-fall guide rail turning and track changing device for high-altitude work according to claim 1, characterized in that: The base body (101) is provided with a protrusion (102) and a concave surface (103) on the edge thereof, and the three together form a cavity for accommodating the rotating guide rail assembly (200).

8. The anti-fall guide rail turning and track changing device for high-altitude work according to claim 1, characterized in that: The outer guide rail (104) is fixed to an outwardly extending plate (106) at the outer edge of the base body (101) via a stepped plate (105) and bolts (107).

9. The anti-fall guide rail turning and track changing device for aerial work according to claim 5, characterized in that: When the driving block (109) is pressed for the first time, the connecting block 1 (119) extends into the space 2 (122), causing the spring 1 (121) to push the top rod (120), triggering the connecting rod 2 (129) to lock the connecting block 2 (126) into the side wall of the space 1 (113); When the driving block (109) is pressed again, the push rod (120) compresses the spring 1 (121) to trigger the connecting rod 2 (129) to drive the connecting block 2 (126) to retract, thereby releasing the lock on the connecting block 1 (119).

10. The high-altitude work anti-fall guide rail turning and track changing device according to claim 1, characterized in that: The rotation axis (108) rotates at an angle of forty-five degrees each time, so that the straight guide rail (203) or the right circular arc guide rail (201) or the left circular arc guide rail (202) docks with the outer guide rail (104) in a selected direction.

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