Safety protection type special ladder for fire fighting

Abstract

The invention relates to the technical field of fire-fighting articles, in particular to a safety protection type fire-fighting special ladder which comprises a first ladder body, hanging rods are fixed to the two sides of the top end of the first ladder body, a protection mechanism is arranged at the top of the first ladder body and comprises a mounting base, the mounting base is fixed to the top end of the first ladder body, and a protection plate is hinged to the top of the mounting base; the protection mechanism linked by the pedal, the lengthening rod, the transmission rod and the protection plate is arranged at the top of the first ladder body, so that when a firefighter approaches the operation window, the protection plate can be driven to turn upwards to be in a vertical state only by stepping on the pedal with feet, and a protection barrier made of composite fireproof glass is formed; the protection plate is arranged in the window, flames, high-temperature heat flow and splashes from the interior of the window can be effectively blocked, direct protection is provided for firemen, the round groove in the middle of the protection plate allows a fire extinguishing water gun or a water pipe to penetrate out of the protection plate, the function of synchronously conducting fire extinguishing operation under safety protection is achieved, and the fire extinguishing rescue efficiency and the safety of operators are improved.

Description

Technical Field

[0001] This invention relates to the field of fire protection equipment technology, specifically a safety-protecting fire-fighting ladder. Background Technology

[0002] Fire ladders are one of the key pieces of equipment used by fire brigades in firefighting and rescue operations for working at heights, evacuating people, and transferring materials. They play an irreplaceable role, especially in rescuing and extinguishing fires from windows and balconies in residential and commercial buildings. Their reliability, ease of operation, and safety during operation directly affect the efficiency of rescue operations and the personal safety of firefighters.

[0003] Traditional fire ladders, especially hook ladders or two-section extension ladders, typically consist of two foldable or extendable sections connected by a hinged or sliding structure. The ladder has evenly spaced crossbeams for firefighters to step on and climb. Hooks or hanging rods are usually installed at the top of the ladder to secure it to supports such as windowsills or balconies. In use, firefighters unfold, set up, and secure the ladder before climbing to their work position to directly face the fire and conduct firefighting or rescue operations.

[0004] However, with traditional fire ladders, when firefighters reach the top of the ladder, their upper bodies are completely exposed to flames, high-temperature smoke, and flying burning materials that may come out of the window, lacking effective immediate protection and posing a direct threat to their personal safety. In addition, the bottom of the ladder usually only relies on the contact between the ladder feet and the ground for support. When firefighters are performing dynamic operations, the ladder is prone to lateral swaying or slipping, posing a risk of overturning. Some ladders hanging on windows will sway when climbing, affecting the stability of the climb. Summary of the Invention

[0005] In response to the shortcomings of existing technologies, this invention provides a safety-protecting fire ladder that can protect firefighters while providing greater stability during climbing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a safety protection type fire-fighting ladder, comprising a first ladder body, with hanging rods fixed on both sides of the top of the first ladder body, a protective mechanism provided at the top of the first ladder body, the protective mechanism comprising a mounting base, the mounting base being fixed to the top of the first ladder body, a protective plate being hinged to the top of the mounting base, an extension rod being rotatably connected to one side of the outer wall of the first ladder body, and a tread and a transmission rod being fixed to the outer wall of the extension rod; The second ladder has vertically equidistant crossbeams installed in the middle of both the first and second ladders. The top of the second ladder is hinged to the bottom of the first ladder. Rubber pads are provided at the top of opposite ends of both the first and second ladders.

[0007] Preferably, the top end of the transmission rod is hinged to one side of the protective plate, the pedal and the extension rod are arranged at an angle, and a rubber pad is provided on the top of the pedal.

[0008] Preferably, the protective plate has a circular groove running through its center, the mounting base has an L-shaped vertical cross-section, the extension rod is located in the same vertical plane as one side of the inner wall of the mounting base, and the protective plate is made of composite fireproof glass.

[0009] Preferably, the first ladder, the second ladder, and the plurality of crossbeams are all hollow, the length of the first ladder is the same as the length of the second ladder, and the exterior of the first ladder, the second ladder, and the plurality of crossbeams are all provided with an anti-slip coating.

[0010] Preferably, the second ladder body has placement slots on both sides of its bottom end, and support rods are placed inside the two placement slots. One end of each support rod is fixed to the same connecting shaft, which passes through the bottom crossbeam. A torsion spring is provided on the outer wall of the connecting shaft. One end of the torsion spring is fixed to the connecting shaft, and the other end of the torsion spring is fixed to the inner wall of the crossbeam. Anti-slip pads are fixed to the other ends of the two support rods.

[0011] Preferably, one of the crossbeams is provided with a triggering mechanism, the triggering mechanism including a pad, the pad being T-shaped and fixed to the top of the crossbeam, and controllers being fixed at both ends of the top of the crossbeam, with the bottom of both ends of the pad respectively abutting against the top of the two controllers.

[0012] Preferably, the controller is equipped with a lithium battery, and a pressure sensor is installed on the top of the controller. Small electric telescopic rods are fixed to opposite ends of the two controllers. The power output ends of the two small electric telescopic rods respectively pass through one side of the two placement slots, and the power output ends of the two small electric telescopic rods respectively abut against one side of the two support rods.

[0013] Preferably, a lifting handle is fixed to the middle of one side of both the first and second ladders. The lifting handle is hollow inside, and a magnet is placed in the hollow part of the lifting handle. The magnets inside the two lifting handles are used together.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention provides a protective mechanism at the top of the first ladder, consisting of a foot pedal, an extension rod, a transmission rod, and a protective plate. This mechanism allows firefighters to simply step on the foot pedal when approaching the work window to flip the protective plate upwards to a vertical position, forming a protective barrier made of composite fireproof glass. This effectively blocks flames, high-temperature heat flow, and splashing debris from inside the window, providing direct protection for firefighters. The circular groove in the middle of the protective plate allows fire hoses or pipes to pass through, enabling simultaneous firefighting operations under safe protection, thus improving firefighting and rescue efficiency and the safety of operators. 2. In this invention, when firefighters climb the ladder and step on or hold onto the pads on a specific crossbeam, a pressure signal triggers the controller, causing the small electric telescopic rod to retract. The torsion spring then drives the support rod to quickly extend and support the ground. This process requires no additional operation from the firefighters and automatically forms a stable triangular support structure at the bottom after the ladder is erected, enhancing the ladder's overall ability to resist lateral swaying or slippage, and improving stability and safety during high-altitude operations. 3. This invention features lifting handles with built-in magnets positioned on the corresponding sides of the first and second ladder bodies. When the ladder is no longer in use, the first and second ladder bodies are folded together, and the two lifting handles are firmly combined into a single handle due to the mutual attraction of the built-in magnets. During transport, only this combined handle needs to be pulled, making operation simple and effortless. This effectively avoids the risk of the ladder bodies accidentally opening during transport, greatly improving the convenience and reliability of carrying and transporting equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall device of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the first ladder of the device of the present invention.

[0017] Figure 3 This is a schematic diagram of the protective mechanism of the device of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the second ladder of the device of the present invention.

[0019] Figure 5 The device of the present invention Figure 4 An enlarged schematic diagram of the structure of part A.

[0020] Figure 6 This is a schematic diagram of the support rod of the device of the present invention in its unfolded state.

[0021] Figure 7 This is a schematic diagram of the trigger mechanism of the device of the present invention.

[0022] In the diagram: 1. First ladder; 2. Second ladder; 3. Crossbeam; 4. Lifting handle; 5. Placement slot; 6. Support rod; 61. Connecting shaft; 7. Anti-slip mat; 80. Triggering mechanism; 81. Pad plate; 82. Controller; 83. Small electric telescopic rod; 9. Hanging rod; 10. Protective mechanism; 101. Mounting base; 102. Protective plate; 103. Circular groove; 104. Transmission rod; 105. Extension rod; 106. Pedal. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1 Please see Figures 1 to 3 The first embodiment of the present invention provides a technical solution for a safety protection type fire ladder: a safety protection type fire ladder includes a first ladder body 1, with hanging rods 9 fixed on both sides of the top of the first ladder body 1. When in use, the hanging rods 9 are hung on the outside of the window of the room that needs to be rescued. A protective mechanism 10 is provided on the top of the first ladder body 1. The protective mechanism 10 includes a mounting base 101, which is fixed to the top of the first ladder body 1. A protective plate 102 is hinged to the top of the mounting base 101. An extension rod 105 is rotatably connected to one side of the outer wall of the first ladder body 1. A footboard 106 and a transmission rod 104 are fixed to the outer wall of the extension rod 105. The second ladder 2, the first ladder 1 and the second ladder 2 are both vertically and equidistantly equipped with crossbeams 3 in the middle. The top of the second ladder 2 is hinged to the bottom of the first ladder 1. Rubber pads are provided at the top of opposite ends of the first ladder 1 and the second ladder 2. When the first ladder 1 and the second ladder 2 are unfolded, the rubber pads at both ends touch each other, increasing the friction while preventing the metal bodies of the first ladder 1 and the second ladder 2 from colliding and being damaged or deformed.

[0025] The transmission rod 104 is hinged to one side of the protective plate 102. The pedal 106 and the extension rod 105 are set at an angle. The top of the pedal 106 is equipped with a rubber pad. The angled pedal 106 allows firefighters to exert more force when stepping on it. Stepping on the pedal 106 causes the extension rod 105 to rotate, which in turn drives the top of the transmission rod 104 to move in an arc shape, causing the protective plate 102 to rotate. The top of the pedal 106 is equipped with an anti-slip pad to increase friction and prevent firefighters from slipping when stepping on it.

[0026] The protective plate 102 has a circular groove 103 running through its center. The vertical cross-section of the mounting base 101 is L-shaped. The middle part of the extension rod 105 is on the same vertical plane as one side of the inner wall of the mounting base 101. The protective plate 102 is made of composite fireproof glass. When firefighters step on the pedal 106 to the limit position, the extension rod 105 is vertical. At the same time, the protective plate 102 touches the L-shaped mounting base 101, and the protective plate 102 stands up to form protection. The composite fireproof glass protective plate 102 can prevent firefighters from being directly impacted by the heat flow of the flames. The circular groove 103 allows firefighters to pass the water hose head through the circular groove 103 to extinguish the fire. The protective plate 102 is opened and closed by stepping. After the fire is extinguished, when it is necessary to climb out of the window for rescue, the foot is removed from the pedal 106, and the protective plate 102 will automatically fall due to gravity.

[0027] The first ladder 1, the second ladder 2, and multiple crossbeams 3 are all hollow. The length of the first ladder 1 is the same as that of the second ladder 2. The first ladder 1, the second ladder 2, and the multiple crossbeams 3 are all coated with an anti-slip coating. The hollow design reduces weight and makes it easier to transport. When folded, the overall length is only the length of a single ladder 1, making it more convenient to transport. The anti-slip coating prevents water droplets on the crossbeams 3 from slipping when climbing.

[0028] During use, the first ladder body 1 and the second ladder body 2, which were folded, are first unfolded so that they are in a straight line and locked at their hinges to form a complete ladder. Then, firefighters erect the ladder vertically and securely hang the two hanging rods 9 at the top of the first ladder body 1 on the windowsill or outer side of the room to be rescued. Firefighters begin climbing the ladder, and when they approach the top, they step on the footplate 106 located on the extension rod 105. Foot pressure drives the extension rod 105 to rotate around its hinge point with the first ladder 1. The transmission rod 104 fixed on the extension rod 105 pulls the protective plate 102, causing it to rotate upward around the hinge axis on the mounting base 101. When the pedal 106 is stepped to its limit position, the protective plate 102 is fully erected, and its edge contacts the vertical part of the L-shaped mounting base 101, forming a stable vertical barrier. In this state, the protective plate 102, made of composite fireproof glass, can effectively block flames, high-temperature airflow and splashes from inside the window, providing temporary upper body protection for firefighters. At the same time, the circular groove 103 in the middle of the protective plate 102 allows firefighters to extend fire hoses or pipes to extinguish fires inward. When the task needs to be changed to personnel rescue, the firefighter only needs to remove his foot from the pedal 106, and the protective plate 102 will automatically swing downward and reset under its own weight, making way for the trapped personnel to be transferred to the ladder.

[0029] Example 2 Please see Figures 4 to 7 This is the second embodiment of the present invention, which differs from the first embodiment in that: The second ladder body 2 has placement slots 5 on both sides of its bottom end. Each placement slot 5 contains a support rod 6. One end of each support rod 6 is fixed to the same connecting shaft 61, which passes through the bottom crossbeam 3. A torsion spring is installed on the outer wall of the connecting shaft 61. One end of the torsion spring is fixed to the connecting shaft 61, and the other end is fixed to the inner wall of the crossbeam 3. The other end of each support rod 6 is fixed with an anti-slip pad 7. During normal handling, the support rod 6 is located inside the placement slot 5 and does not occupy extra space. The two support rods 6 are connected to the second ladder body 2 through the torsion spring and the connecting shaft 61. When there is no external force, the torsion spring will drive the connecting shaft 61 to rotate, popping the two support rods 6 out of the placement slot 5. After popping out, the anti-slip pad 7 at the top of the support rod 6 touches the ground to form support.

[0030] One of the crossbeams 3 is equipped with a triggering mechanism 80, which includes a pad 81. The pad 81 is T-shaped and fixed to the top of the crossbeam 3. Controllers 82 are fixed to both ends of the top of the crossbeam 3. The bottom ends of the pad 81 are respectively connected to the top of the two controllers 82. When climbing, the firefighter's hands or feet will apply pressure to the pad 81, which will transmit the pressure to the pressure sensor at the top. The pressure sensor will send a signal to the controller 82, thereby automatically releasing the limit of the support rod 6 during climbing.

[0031] The controller 82 is equipped with a lithium battery and a pressure sensor on its top. Two small electric telescopic rods 83 are fixed to opposite ends of the two controllers 82. The power output ends of the two small electric telescopic rods 83 pass through one side of the two placement slots 5 respectively, and the power output ends of the two small electric telescopic rods 83 are respectively connected to one side of the two support rods 6. When the controller 82 receives the signal from the pressure sensor, it controls the small electric telescopic rods 83 to shorten, releasing the restriction on the support rods 6, so that the torsion spring can directly pop out the support rods 6.

[0032] In the initial state of use, the two support rods 6 are stored in the placement slots 5 at the bottom of the second ladder body 2, and are held in place by the power output ends of the two small electric telescopic rods 83. When a firefighter begins to climb the ladder and his or her foot steps on the T-shaped pad 81 located on the specific crossbeam 3, the pad 81 transmits the pressure applied by the human body to the pressure sensors on the top of the two controllers 82 below it. The pressure sensors are triggered and send a signal to the controllers 82. The controllers 82 then drive the two small electric telescopic rods 83 connected to them to retract, so that their output ends retract from the side of the support rods 6, releasing the lock on the support rods 6. At this time, the torsion spring pre-tensioned on the connecting shaft 61 immediately releases its elastic force, driving the connecting shaft 61 to rotate, thereby quickly popping the two support rods 6 outward and downward from the placement slots 5. The anti-slip pads 7 at the ends of the support rods 6 then contact and press firmly against the ground, forming a stable triangular support structure on both sides of the bottom of the second ladder body 2. This significantly enhances the overall ability of the ladder to resist lateral swaying or slippage, and improves the safety of working at heights.

[0033] The remaining structure is the same as that in Example 1.

[0034] Example 3 Please see Figure 1 This is the third embodiment of the present invention, which differs from the first and second embodiments in that: Each of the first ladder body 1 and the second ladder body 2 has a lifting handle 4 fixed to the middle of one side. The lifting handle 4 is hollow inside, and a magnet is placed in the hollow part of the lifting handle 4. The magnets inside the two lifting handles 4 are used together. When the first ladder body 1 and the second ladder body 2 are combined during transportation, the two lifting handles 4 are brought close to each other, and the magnets inside the lifting handles 4 attract each other, so that the two lifting handles 4 form a whole. When transporting, you can simply lift the lifting handle 4 for transportation.

[0035] During use, after a firefighting mission or during equipment transfer, the ladder needs to be stored and moved. First, release the locking mechanism between the first ladder body 1 and the second ladder body 2. Rotate the second ladder body 2 inward around its hinge point at the bottom of the first ladder body 1 until the two ladder bodies are completely overlapped. During the overlap, the pull handles 4 fixed in the middle of the first ladder body 1 and the second ladder body 2 also move closer to each other. When the two ladder bodies are close together, the magnetic attraction generated by the magnetic attraction between the two pull handles 4, which contain magnetic blocks inside the hollow cavity of each pull handle 4, firmly attracts the two pull handles 4 into a whole. At this time, the movers can simply lift the pull handles 4 to move the ladder, making the moving process more stable and avoiding the risk of the two parts of the ladder accidentally opening during the move. This greatly improves the convenience and efficiency of carrying the equipment. When it is needed again, the two ladder bodies can be pulled apart with a little force, the magnets will separate, and the ladder will return to normal use.

[0036] The remaining structures are the same as those in Examples 1 and 2.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety-protected fire-fighting ladder, characterized in that, include: A first ladder (1) has hanging rods (9) fixed on both sides of the top of the first ladder (1). A protective mechanism (10) is provided on the top of the first ladder (1). The protective mechanism (10) includes a mounting base (101). The mounting base (101) is fixed to the top of the first ladder (1). A protective plate (102) is hinged to the top of the mounting base (101). An extension rod (105) is rotatably connected to one side of the outer wall of the first ladder (1). A footboard (106) and a transmission rod (104) are fixed to the outer wall of the extension rod (105). The second ladder (2) has a crossbeam (3) installed vertically and equidistantly in the middle of the first ladder (1) and the second ladder (2). The top of the second ladder (2) is hinged to the bottom of the first ladder (1). The top of the first ladder (1) and the second ladder (2) are both provided with rubber pads at opposite ends.

2. The safety-protection fire-fighting ladder according to claim 1, characterized in that: The top of the transmission rod (104) is hinged to one side of the protective plate (102), the pedal (106) and the extension rod (105) are arranged in an inclined manner, and a rubber pad is provided on the top of the pedal (106).

3. The safety-protection fire-fighting ladder according to claim 2, characterized in that: The protective plate (102) has a circular groove (103) through the middle, the vertical section of the mounting base (101) is L-shaped, the middle part of the extension rod (105) and one side of the inner wall of the mounting base (101) are located on the same vertical plane, and the protective plate (102) is made of composite fireproof glass.

4. The safety protection type fire-fighting ladder according to claim 1, characterized in that: The first ladder (1), the second ladder (2) and the multiple crossbeams (3) are all hollow. The length of the first ladder (1) is the same as the length of the second ladder (2). The first ladder (1), the second ladder (2) and the multiple crossbeams (3) are all coated with an anti-slip coating.

5. A safety-protection fire-fighting ladder according to claim 1, characterized in that: The second ladder (2) has a placement groove (5) on both sides of the bottom end. A support rod (6) is placed inside the two placement grooves (5). One end of the two support rods (6) is fixed with the same connecting shaft (61). The connecting shaft (61) passes through the bottom crossbeam (3). A torsion spring is provided on the outer wall of the connecting shaft (61). One end of the torsion spring is fixed to the connecting shaft (61), and the other end of the torsion spring is fixed to the inner wall of the crossbeam (3). The other end of the two support rods (6) is fixed with an anti-slip pad (7).

6. A safety-protection fire-fighting ladder according to claim 5, characterized in that: One of the beams (3) is provided with a triggering mechanism (80), the triggering mechanism (80) includes a pad (81), the pad (81) is T-shaped and fixed to the top of the beam (3), and controllers (82) are fixed at both ends of the top of the beam (3), and the bottom of both ends of the pad (81) is respectively connected to the top of the two controllers (82).

7. A safety-protection fire-fighting ladder according to claim 6, characterized in that: The controller (82) is equipped with a lithium battery. A pressure sensor is installed on the top of the controller (82). Small electric telescopic rods (83) are fixed to opposite ends of the two controllers (82). The power output ends of the two small electric telescopic rods (83) respectively move through one side of the two placement slots (5), and the power output ends of the two small electric telescopic rods (83) respectively abut against one side of the two support rods (6).

8. A safety-protection fire-fighting ladder according to claim 1, characterized in that: The first ladder (1) and the second ladder (2) are each fixed with a lifting handle (4) in the middle of one side. The lifting handle (4) is hollow inside and a magnet is placed in the hollow part inside the lifting handle (4). The magnets inside the two lifting handles (4) are used together.

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