Folding danger-avoiding ladder

Abstract

The utility model provides a folding type hedging ladder which comprises a ladder main body and a ladder section connected with the ladder main body, the ladder main body comprises a plurality of first pedals, the ladder section comprises a plurality of second pedals, at least one first pedal comprises a hinge piece, and the hinge piece is connected with the ladder main body. The hinge piece is arranged at the midpoint position of the first pedal; in the ascending direction of the ladder, the first pedal and the second pedal are symmetrically folded, when a dumper passes through a tunnel, the folding type danger avoiding ladder leans against the inner wall of the tunnel, constructors in the tunnel climb on the pedals on the device, and a passing space is reserved so that the dumper can smoothly pass through; when the dumper passes and does not need to avoid, a constructor can fold the folding type danger avoiding ladder in the ascending direction of the ladder, and the folding type danger avoiding ladder is easy to carry and move to a next construction site.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction safety devices, and particularly relates to a folding escape ladder. Background Art

[0002] A tunnel is an engineering building constructed in the ground or in a mountain. During construction, the transportation of various materials and construction materials depends on a material transport vehicle. Due to the limited width of the tunnel, generally only a material transport vehicle can pass through. When the material transport vehicle passes, construction workers need to avoid it to prevent safety accidents. Existing tunnel escape devices, such as a refuge platform for trackless rubber-tyred vehicles in a driving roadway disclosed in a Chinese patent with the application number CN201620452722.5, are provided above a belt conveyor. When underground pedestrians encounter a trackless rubber-tyred vehicle, they can quickly climb onto the platform, which not only protects their own safety but also enables the vehicle to pass safely and smoothly. However, the above platform is a fixed device, and a platform needs to be set every 60 meters in the roadway, resulting in too high costs and cumbersome installation and disassembly processes. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a folding escape ladder, which can solve the technical problems in the background art and transfer construction workers to a safe position when the material transport vehicle runs to a construction section in the tunnel, enabling the material transport vehicle to pass smoothly and safely.

[0004] The utility model provides a folding escape ladder, which includes a ladder main body and ladder sections connected to the ladder main body. The ladder main body includes a plurality of first pedals, and the ladder sections include a plurality of second pedals. Among them, at least one of the first pedals includes a hinge member, and the hinge member is arranged at the midpoint position of the first pedal; along the upward direction of the ladder, the first pedals and the second pedals are symmetrically folded.

[0005] When a material transport vehicle passes through the tunnel, the folding escape ladder is leaned against the inner wall of the tunnel, and construction workers in the tunnel climb onto the pedals of the folding escape ladder, vacating a passage space for the material transport vehicle to pass through smoothly. When the material transport vehicle has passed and there is no need to avoid it anymore, the construction workers can fold the folding escape ladder along the upward direction of the ladder, making it easy to carry and move the folding escape ladder to the next construction site.

[0006] Further, the second pedal is disconnected along the midpoint position.

[0007] Further, the upper end of the ladder main body is a downwardly bent return structure.

[0008] Further, a distance warning component is further included in the folding escape ladder provided by the utility model. The distance warning component includes at least one distance sensor, a warning device, and a mobile power source; the distance sensor, the warning device, and the mobile power source are connected to each other.

[0009] Furthermore, the foldable escape ladder provided by the utility model also includes a positioning pin; a slide groove is provided at the lower end of the ladder body, and a connecting rod is provided at the upper end of the ladder section, the connecting rod and the slide groove match and correspond to each other, the connecting rod is slidably connected to the slide groove, and the positioning pin passes through the mutually connected slide groove and the connecting rod to position the ladder section on the ladder body.

[0010] Furthermore, the utility model provides a foldable escape ladder, which also includes a support frame, wherein the support frame includes a connecting portion and a supporting leg portion connected in sequence, wherein the connecting portion is hinged to the lower end of the ladder section; the support frame has a first state and a second state:

[0011] In the first state, the support leg portion abuts against the support surface;

[0012] In the second state, the support leg is parallel to the ascending direction of the ladder.

[0013] Furthermore, the contact surface of the support foot portion that abuts against the ground is provided with anti-slip knurling.

[0014] The utility model has the following beneficial effects:

[0015] 1) The ladder body and the ladder sections connected to the ladder body in the foldable escape ladder disclosed by the utility model can be symmetrically folded and arranged along the upward direction of the ladder. When in use, the folded ladder body and ladder sections are opened, and the construction workers in the tunnel can avoid with the help of the device. When the construction site changes, the construction workers can fold the foldable escape ladder along the upward direction of the ladder, which is easy to carry;

[0016] 2) By matching the slide groove at the lower end of the ladder body with the connecting rod at the upper end of the ladder section and slidingly connecting them, the ladder section is positioned on the ladder body using a positioning pin passing through the mutually connected slide groove and connecting rod, thereby further reducing the storage volume of the device and facilitating the staff to carry and move it.

[0017] 3) With the help of the downward bending structure of the upper end of the ladder body, the foldable escape ladder can be hung on the pipe on the inner wall of the tunnel, making it more stable when used;

[0018] 4) The hinged support frame is installed at the lower end of the ladder section to increase the contact area between the lower end of the foldable escape ladder and the ground, making it safer and more reliable when used;

[0019] 5) A distance warning component is set on the device. When the distance sensor in the distance warning component detects that the material transport vehicle is approaching, the alarm sounds an alarm to prompt the construction personnel to avoid the material transport vehicle in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the overall folding emergency ladder provided by some embodiments of the present utility model.

[0021] Figure 2 It is a schematic diagram of the overall folding emergency ladder provided by some embodiments of the present utility model.

[0022] Figure 3 It is a schematic diagram of the overall folding emergency ladder provided by some embodiments of the present utility model.

[0023] Figure 4 It is a schematic diagram of the warning component provided by some embodiments of the present utility model.

[0024] Figure 5 It is a schematic diagram of the connection of the warning component provided by some embodiments of the present utility model.

[0025] Explanation of reference numerals:

[0026] 100. Ladder main body

[0027] 110. First pedal

[0028] 120. Slide groove

[0029] 200. Ladder section

[0030] 210. Second pedal

[0031] 220. Connecting rod

[0032] 300. Hinge

[0033] 400. Warning component

[0034] 410. Distance sensor

[0035] 420. Alarm

[0036] 430. Mobile power supply

[0037] 500. Positioning pin

[0038] 600. Support frame

[0039] 610. Connection part

[0040] 620. Supporting foot

[0041] 621. Anti-slip knurling Detailed implementation manners

[0042] To more clearly and completely describe the technical solution of the present utility model, the following further details the present utility model through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Various changes can be made within the scope defined by the rights of the present utility model.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0044] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model; the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined 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, an electrical connection or a communication connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] Such as Figure 1As shown in the figure, the present utility model provides a folding escape ladder, which includes a ladder main body 100 and a ladder section 200 connected to the ladder main body 100. The ladder main body 100 includes a plurality of first pedals 110, and the ladder section 200 includes a plurality of second pedals 210. Among them, at least one first pedal 110 includes a hinge 300, and the hinge 300 is arranged at the midpoint position of the first pedal 110; along the upward direction of the ladder, the first pedal 110 and the second pedal 210 are symmetrically folded, and the second pedal 210 is disconnected along the midpoint position. The state of the folding escape ladder after folding is as Figure 2 shown.

[0047] The specific use process is as follows: When the transport vehicle passes through the tunnel, lean the folding escape ladder against the inner wall of the tunnel. The construction workers in the tunnel climb onto the pedals of the folding escape ladder to make way for the transport vehicle to pass through smoothly. When the transport vehicle has passed and there is no longer a need to avoid, the construction workers can fold the folding escape ladder along the upward direction of the ladder, which is easy to carry and move the folding escape ladder to the next construction site. In order to make the device more firm, the hinge 300 can increase with the number of first pedals. For example, when the ladder main body 100 includes four first pedals 110, three or four hinges 300 can be provided, and each hinge 300 is located at the midpoint position of each first pedal 110, making the connection of the ladder main body divided into left and right parts more firm.

[0048] In some embodiments of the present utility model, the upper end of the ladder main body 100 is a bent-back structure that bends downward. In this embodiment, when the construction workers use the folding escape ladder, they can hang the bent-back structure that bends downward at the upper end of the ladder main body 100 on a fixing member such as a sidewall pipe on the sidewall of the tunnel. With the help of the bent-back structure that bends downward at the upper end of the ladder main body 100, the folding escape ladder is more stable when in use.

[0049] In some embodiments of the present utility model, the folding escape ladder further includes a distance warning component 400, such as Figure 4 shown. The distance warning component 400 includes at least one distance sensor 410, a warning device 420, and a mobile power supply 430; the distance sensor 410, the warning device 420, and the mobile power supply 430 are connected to each other. The specific connection relationship is as Figure 5 shown. In this embodiment, the distance sensor 410 can be an ultrasonic distance sensor. Exemplarily, when the ultrasonic distance sensor detects that the transport vehicle is within 50 m nearby, the ultrasonic distance sensor sends a communication signal to the warning device 420, and the warning device 420 issues an alarm to prompt that a transport vehicle is approaching. After hearing the alarm, the construction workers open and use the folded and retracted folding escape ladder to complete the avoidance operation.

[0050] In some embodiments of the present utility model, the folding escape ladder further includes a positioning pin 500; a chute 120 is provided at the lower end of the ladder main body 100, and a connecting rod 220 is provided at the upper end of the ladder section 200. The connecting rod 220 and the chute 120 are matched and corresponding, and the connecting rod 220 is slidably connected to the chute 120. The positioning pin 500 passes through the mutually connected chute 120 and connecting rod 220 to position the ladder section 200 on the ladder main body 100. In this embodiment, the ladder section 200 can be stretched and contracted through the sliding connection between the connecting rod 220 and the chute 120. When using the folding escape ladder, the connecting rod 220 at the upper end of the ladder section 200 is slid out from the chute 120 at the lower end of the ladder main body 100 and stretched to the required length, and then the positioning pin 500 is passed through the positioning holes of the chute 120 and the connecting rod 220 for fixation. As Figure 1 shown, the ladder section 200 is positioned at a suitable height relative to the ladder main body 100. When the use is completed, the positioning pin 500 is pulled out, the connecting rod 200 is slid into the top end of the chute 120 at the lower end of the ladder main body 100 and fixed with the positioning pin 500, and then the ladder main body 100 and the ladder section 200 are folded symmetrically left and right along the upward direction of the ladder for storage operation. The storage state is as Figure 2 shown. Preferably, the chute 120 and the connecting rod 200 are made of hollow square tubes, which reduces the weight of the folding escape ladder and facilitates the handling and movement of the staff.

[0051] As Figures 1-3 shown, in some embodiments of the present utility model, a folding escape ladder further includes a support frame 600. The support frame 600 includes a connecting portion 610 and a supporting foot portion 620 connected in sequence. The connecting portion 610 is hinged to the lower end of the ladder section 200; the support frame 600 has a first state and a second state: in the first state, the supporting foot portion 620 abuts against the supporting foot surface; in the second state, the supporting foot portion 620 is parallel to the upward direction of the ladder. The hinged connection between the connecting portion 610 and the lower end of the ladder section 200 enables the support frame 600 to be in the first state during use and the second state during storage; when not in use, the support frame 600 is folded and close to the lower part of the ladder section to avoid bumping. In this embodiment, the support frame 600 can increase the contact area between the lower end of the folding escape ladder and the ground, making it safer and more reliable during use. Preferably, as Figure 2 shown, the contact surface where the supporting foot portion 620 abuts against the ground is provided with anti-slip knurling 621 to increase the friction between the support frame 600 and the ground and further improve the safety when using the folding escape ladder.

[0052] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

Claims

1. A foldable escape ladder, comprising a ladder body (100) and a ladder section (200) connected to the ladder body (100), wherein the ladder body (100) comprises a plurality of first pedals (110), and the ladder section (200) comprises a plurality of second pedals (210), characterized in that: At least one of the first pedals (110) comprises a hinge (300), and the hinge (300) is arranged at the midpoint of the first pedal (110); along the upward direction of the ladder, the first pedal (110) and the second pedal (210) are symmetrically folded.

2. The foldable escape ladder according to claim 1, characterized in that: The second pedal (210) is disconnected along the midpoint position.

3. The foldable escape ladder according to claim 1, characterized in that: The upper end of the ladder body (100) is a bent structure that bends downward.

4. The foldable escape ladder according to claim 1, characterized in that: The device also includes a distance warning component (400), wherein the distance warning component (400) includes at least one distance sensor (410), an alarm (420) and a mobile power source (430); the distance sensor (410), the alarm (420) and the mobile power source (430) are connected to each other.

5. The foldable escape ladder according to claim 1, characterized in that: It also includes a positioning pin (500); a slide groove (120) is provided at the lower end of the ladder body (100), and a connecting rod (220) is provided at the upper end of the ladder section (200); the connecting rod (220) and the slide groove (120) match and correspond to each other, and the connecting rod (220) is slidably connected to the slide groove (120); the positioning pin (500) passes through the mutually connected slide groove (120) and the connecting rod (220) to position the ladder section (200) on the ladder body (100).

6. The foldable escape ladder according to claim 1, characterized in that: The ladder also comprises a support frame (600), wherein the support frame (600) comprises a connecting portion (610) and a supporting foot portion (620) connected in sequence, wherein the connecting portion (610) is hinged to the lower end of the ladder section (200); the support frame (600) has a first state and a second state: In the first state, the support foot portion (620) abuts against the support surface; In the second state, the support leg portion (620) is parallel to the upward direction of the ladder.

7. The foldable escape ladder according to claim 6, characterized in that: The contact surface of the support foot portion (620) that abuts against the ground is provided with anti-slip knurling (621).

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