A safety cage ladder

Abstract

The present invention discloses a safety cage ladder, which relates to the field of safe construction technology. The cage ladder comprises a ladder body and a cage frame, wherein the cage frame is fixed to the ladder body, a longitudinal beam is provided at the center of the cage frame, an inverted T-shaped slide rail is provided inside the longitudinal beam, a following mechanism is provided in the slide rail, and the following mechanism comprises a positioning block, a rotating wheel, a locking mechanism, and an elastic fitting mechanism. The positioning block is in an I-shape and is installed in the inverted T-shaped slide rail, the top plate of the positioning block is located outside the inverted T-shaped slide rail, the elastic fitting mechanism is provided at the bottom end of the positioning block, the rotating wheels are provided on both sides of the bottom end of the positioning block, the rotating wheels match the width of the inverted T-shaped slide rail, the rotating wheels are rotatably connected to the positioning block, the locking mechanism is provided in the positioning block, the locking mechanism is rotatably connected to the positioning block, and guide rings are provided at both ends of the outer sides of the positioning block. The present invention can effectively prevent workers from falling and getting injured due to accidental loss of grip when climbing the cage ladder.

Description

Technical Field

[0001] The invention belongs to the technical field of safe construction, and in particular relates to a safety protection cage ladder. Background Art

[0002] Cage ladders are a common climbing tool used in factory maintenance and construction. They are used in the construction of high piers on various large, medium, and small bridges, pedestrian walkways, and the internal structures of deep subway foundation pits. As vertical access routes within foundation pits, they feature strong load-bearing capacity, simple and quick installation, and a strong and reliable structure. Chinese invention patent number CN105317370B discloses a cage ladder with a protective cover on the outside of the ladder to prevent workers from falling. However, in actual construction, due to the length of the cage ladder, workers can still accidentally let go of the ladder due to excessive fatigue or mistakenly releasing it, resulting in casualties.

[0003] Therefore, how to provide a safer protective cage ladder to prevent workers from falling has become a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a safety cage ladder. By setting a following mechanism that follows the workers up and down, the present invention can still use the safety belt to prevent the workers from falling if the workers accidentally let go during the climbing process, thereby avoiding casualties.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a safety protection cage ladder, the cage frame is arranged on the side of the ladder body away from the wall, the cage frame is fixed on the ladder body, a longitudinal beam is arranged at the center of the cage frame, an inverted T-shaped slide rail is arranged on the inner side of the longitudinal beam, a following mechanism is arranged in the slide rail, and the following mechanism includes a positioning block, a rotating wheel, a locking mechanism and an elastic fitting mechanism, the positioning block is I-shaped, the positioning block is installed in the inverted T-shaped slide rail, the top plate of the positioning block is located on the outer side of the inverted T-shaped slide rail, the elastic fitting mechanism is arranged at the bottom end of the positioning block, the rotating wheels are arranged on both sides of the bottom end of the positioning block, the rotating wheels match the width of the inverted T-shaped slide rail, the rotating wheel is rotatably connected to the positioning block, the locking mechanism is arranged in the positioning block, the locking mechanism is rotatably connected to the positioning block, and guide rings are arranged at both ends of the outer side of the positioning block.

[0006] Furthermore, it also includes a plurality of brackets, which are arranged on a side of the ladder body close to the wall and are used to fix the ladder body.

[0007] Furthermore, the cage frame also includes an arc-shaped plate and a reinforcing strip. The longitudinal beam is evenly provided with arc-shaped holes. The arc-shaped plate is fixed to the ladder body through the arc-shaped holes. The reinforcing strip is longitudinally fixed to the arc-shaped plate for reinforcing the cage frame. The longitudinal beam is provided with a threaded hole on the outside corresponding to the arc-shaped hole. The arc-shaped plate is fixedly connected to the longitudinal beam by a fastening bolt.

[0008] Furthermore, the locking mechanism includes a locking block and a rotating shaft. The locking block is L-shaped, a fixing ring is provided at the top of the locking block, a movable groove is provided in the longitudinal direction of the positioning block, the rotating shaft is provided in the movable groove, and a circular hole is provided corresponding to the locking block. The rotating shaft passes through the circular hole and is rotatably connected to the locking block.

[0009] Furthermore, it also includes a blocking rod, which is arranged in the movable groove and is located at the lower corner of the locking block, for limiting the locking block.

[0010] Furthermore, it also includes a torsion spring, which is arranged between the rotating shaft and the circular hole and is used to provide torsion for the locking block so that the torsion block rests on the blocking rod.

[0011] Furthermore, the elastic fitting mechanism includes a compression spring, a limiting rod and a ball universal wheel. A limiting hole is provided at the bottom corner of the positioning block, the compression spring is provided in the limiting hole, the limiting rod is slidably provided in the limiting hole, one end of the limiting rod rests on the compression spring, and the other end of the limiting rod extends out of the limiting hole and is fixed with a ball universal wheel.

[0012] Furthermore, the guide rings are two symmetrically arranged arc-shaped circular rings, the arc-shaped circular rings are rotatably arranged on the positioning block, and a return spring is provided at the hinge between the arc-shaped circular rings and the positioning block.

[0013] Furthermore, the guide ring is a hard rubber ring with a notch.

[0014] Furthermore, it also includes an aerial work rope, one end of which is provided with a hook, the hook is hung in a fixed ring, and the other end of the aerial work rope passes through a guide ring and is fixed on the aerial safety belt of the operator.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a slide rail and a following mechanism on the cage ladder, so that the following mechanism can further protect the operator when the operator climbs the cage ladder, and the operator's high-altitude work safety belt is fixed to the following mechanism through the high-altitude work rope. When the operator climbs, the work safety rope can be raised and lowered synchronously without causing a climbing burden. When the operator releases the cage ladder due to fatigue or hand slippage, the locking mechanism immediately locks in the slide rail to avoid the risk of falling due to human error. The inverted T-shaped setting prevents the following mechanism from escaping from the slide rail, thereby improving the safety of the following mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 This is a partial enlarged view of point A of the present invention;

[0019] Figure 3 This is a structural diagram of the following mechanism of the present invention;

[0020] Figure 4 Schematic diagram of the elastic fitting mechanism of the present invention;

[0021] Figure 5 A top view of the following mechanism of the present invention;

[0022] Figure 6 It is a cross-sectional view of the following mechanism of the present invention;

[0023] Figure 7 This is a cross-sectional view of the elastic fitting mechanism of the present invention;

[0024] Figure 8 This is a schematic structural diagram of the locking block of the present invention;

[0025] Figure 9 A top view of the following mechanism in Example 3 of the present invention;

[0026] Figure 10 This is a top view of the following mechanism in Example 4 of the present invention.

[0027] In the figure: 1-ladder body; 2-bracket; 3-arc-shaped plate; 4-reinforcement slats; 5-longitudinal beam; 6-arc-shaped hole; 7-fastening bolt; 8-positioning block; 9-rotating wheel; 10-guide ring; 11-locking block; 12-rotating shaft; 13-fixing ring; 14-torsion spring; 15-blocking rod; 16-compression spring; 17-limiting rod; 18-ball universal wheel; 19-auxiliary wheel. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "horizontal", "inner", "outer", "one side", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1

[0031] like Figure 1-8 As shown, this embodiment provides a safety cage ladder, including a ladder body 1, a cage frame and several brackets 2. The bracket 2 is arranged on the side of the ladder body close to the wall for fixing the ladder body 1. The cage frame is arranged on the side of the ladder body 1 away from the wall. The cage frame is fixed to the ladder body 1. The cage frame includes an arc-shaped plate 3, a reinforcing strip 4 and a longitudinal beam 5. The longitudinal beam 5 is provided with an arc-shaped hole 6 matching the arc-shaped plate 3. The arc-shaped plate 3 is fixed to the ladder body 1 through the arc-shaped hole 6. The reinforcing strip 4 is longitudinally fixed on the arc-shaped plate 3 for reinforcing the cage frame to make the cage frame structure more stable. A threaded hole is provided on the outer side of the arc-shaped hole of the longitudinal beam 5. The fastening bolt 7 is screwed into the threaded hole to fix the arc-shaped plate 3 to the longitudinal beam 5. An inverted T-shaped slide rail is provided on the inner side of the longitudinal beam 5, and a following mechanism is provided in the inverted T-shaped slide rail.

[0032] The following mechanism includes a positioning block 8, a rotating wheel 9, a locking mechanism and an elastic fitting mechanism. A notch is provided at the bottom end of the longitudinal beam 5. The positioning block 8 is installed in the inverted T-shaped slide rail through the notch. The inverted T-shaped slide rail adopts a notch design, which can facilitate multiple operators to install the following mechanism at the same time, making it convenient for multiple people to climb. The positioning block 8 is I-shaped, and its top plate is located on the outside of the inverted T-shaped slide rail. The rotating wheels 9 are arranged on both sides of the bottom end of the positioning block 8. The rotating wheels 9 match the width of the inverted T-shaped slide rail. The rotating wheels 9 are The positioning block 8 is rotatably connected, and the rotating wheel 9 is used to quickly move the positioning block 8 in the inverted T-shaped slide rail to facilitate it to follow the workers in the cage ladder. The locking mechanism is arranged in the positioning block 8, and the locking mechanism includes a locking block 11 and a rotating shaft 12. The locking block 11 is L-shaped, and a fixing ring 13 is provided at the top of the locking block 11. A movable groove is opened in the longitudinal direction of the positioning block 8, and the rotating shaft 12 is provided in the movable groove. The locking block 11 is correspondingly provided with a circular hole, and the rotating shaft 12 passes through the circular hole and is rotatably connected to the locking block 11.

[0033] As a preferred embodiment of the present invention, a torsion spring 14 is further provided between the rotating shaft 12 and the circular hole, and a baffle 15 is further provided in the movable groove. The torsion spring 14 is used to provide torque to the locking block 11 so that the locking block 11 rests on the baffle 15. In this way, when the positioning block 8 slides in the inverted T-shaped slide rail, the locking block 11 will not swing at will under the action of the torsion spring, causing the positioning block 8 to get stuck when rising or falling. The baffle 15 is provided at the lower corner of the locking block 11, which is used to limit the locking block 11 and can prevent the locking block 11 from flipping inward excessively.

[0034] Elastic fitting mechanisms are located at the four corners of the positioning block 8. These mechanisms include a compression spring 16, a limiting rod 17, and a ball-bearing universal wheel 18. A limiting hole is located at the bottom of the positioning block 8, into which the compression spring 16 is placed. The limiting rod 17 slides within the limiting hole. The limiting rod 17 has a stepped structure, with the thicker end of the limiting rod 17 resting against the compression spring 16, while the thinner end of the limiting rod 17 extends out of the limiting hole and is secured with the ball-bearing universal wheel 18. The elastic fitting mechanism ensures that the positioning block 8 stops at any time during its sliding process, preventing it from constantly falling and causing discomfort to the operator. It also directly brakes the cage ladder when the operator lets go, reducing the braking distance of the positioning block 8. This prevents both the positioning block 8 and the operator from falling simultaneously, resulting in an excessively long braking distance and a collision with the cage ladder. The ball-bearing universal wheel 18 also facilitates the sliding of the positioning block 8, preventing it from getting stuck when it stops and then moves again.

[0035] Guide rings 10 are provided at both ends of the surface of the positioning block 8. These guide rings 10 are two symmetrically arranged arcuate rings, hinged to the positioning block 8. Return springs are installed at the hinged joints between the arcuate rings and the positioning block. The guide rings serve as guides for the aerial work rope, preventing the positioning block from accidentally locking due to misdirected rope tension. The arcuate rings and return springs facilitate the insertion and removal of the rope.

[0036] As a preferred embodiment of the present invention, it also includes an aerial work rope, one end of which is provided with a hook, which is hung in the fixing ring 13, and the other end of the aerial work rope passes through the guide ring 10 and is fixed to the aerial safety belt of the operator.

[0037] Example 2

[0038] The difference between this embodiment and embodiment 1 is that the guide ring 10 in this embodiment is a hard rubber ring with a notch, and the hard rubber ring is fixed on the positioning block and can guide the working rope.

[0039] Example 3

[0040] like Figure 9 As shown, the difference between this embodiment and embodiment 1 is that auxiliary wheels 19 are provided on both sides of the top plate of the positioning block in this embodiment. The auxiliary wheels can make the positioning block 8 cooperate with the inverted T-shaped slide rail more smoothly during movement, thereby avoiding the positioning block 8 from getting stuck.

[0041] Example 4

[0042] like Figure 10 As shown, the difference between this embodiment and embodiment 1 is that protrusions are provided at the connection points between the two sides of the positioning block 8 and the inverted T-shaped slide rail in this embodiment. The setting of the protrusions can more effectively prevent the positioning block 8 from detaching from the inverted T-shaped slide rail.

[0043] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A safety cage ladder, comprising a ladder body and a cage frame, wherein the cage frame is arranged on a side of the ladder body away from the wall and is fixed to the ladder body, characterized in that: The center of the cage is provided with a longitudinal beam, the inner side of the longitudinal beam is provided with an inverted T-shaped slide rail, and a following mechanism is provided in the slide rail, and the following mechanism includes a positioning block, a rotating wheel, a locking mechanism and an elastic fitting mechanism, the positioning block is I-shaped, the positioning block is installed in the inverted T-shaped slide rail, the top plate of the positioning block is located at the outer side of the inverted T-shaped slide rail, the elastic fitting mechanism is arranged at the bottom end of the positioning block, the rotating wheel is arranged on both sides of the bottom end of the positioning block, the rotating wheel matches the width of the inverted T-shaped slide rail, the rotating wheel is rotatably connected to the positioning block, the locking mechanism is arranged in the positioning block, the locking mechanism is rotatably connected to the positioning block, and guide rings are provided at both ends of the outer side of the positioning block; The locking mechanism includes a locking block and a rotating shaft. The locking block is L-shaped. A fixing ring is provided on the top of the locking block. A movable groove is provided in the longitudinal direction of the positioning block. The rotating shaft is provided in the movable groove. A circular hole is provided in the locking block. The rotating shaft passes through the circular hole and is rotatably connected to the locking block. It also includes a blocking rod, which is arranged in the movable groove and is located at the lower corner of the locking block, and is used to limit the locking block; The torsion spring is arranged between the rotating shaft and the circular hole, and is used to provide a torsion force for the locking block so that the torsion block rests against the blocking rod; The elastic fitting mechanism includes a compression spring, a limiting rod and a ball universal wheel. A limiting hole is provided at the bottom corner of the positioning block. The compression spring is provided in the limiting hole. The limiting rod is slidably provided in the limiting hole. One end of the limiting rod abuts against the compression spring, and the other end of the limiting rod extends out of the limiting hole and is fixed with the ball universal wheel. The guide ring is a hard rubber ring with notches.

2. A safety cage ladder according to claim 1, characterized in that: It also includes a plurality of brackets, which are arranged on a side of the ladder body close to the wall and are used to fix the ladder body.

3. A safety cage ladder according to claim 1, characterized in that: The cage frame also includes an arc-shaped plate and a reinforcement strip. The longitudinal beam is evenly provided with arc-shaped holes. The arc-shaped plate is fixed to the ladder body through the arc-shaped holes. The reinforcement strip is longitudinally fixed to the arc-shaped plate for reinforcing the cage frame. The longitudinal beam is provided with a threaded hole on the outside corresponding to the arc-shaped hole. The arc-shaped plate is fixedly connected to the longitudinal beam by a fastening bolt.

4. A safety cage ladder according to claim 1, characterized in that: It also includes an aerial work rope, one end of which is provided with a hook, the hook being hung in a fixing ring, and the other end of the aerial work rope passing through a guide ring and being fixed on an aerial safety belt of an operator.

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