CN219548780U

CN219548780U - Can realize rectilinear movement's fire ladder structure

Info

Publication number: CN219548780U
Application number: CN202320683788.5U
Authority: CN
Inventors: 杨昌; 王勇; 张东豫; 丁华锋; 贺健; 郭敏; 王路军
Original assignee: Laohekou City Fire Rescue Brigade
Current assignee: Laohekou City Fire Rescue Brigade
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-08-18
Anticipated expiration: 2033-03-31

Abstract

The utility model provides a fire ladder structure capable of realizing linear motion. Belongs to the technical field of fire-fighting ladder for fire-fighting rescue. The fire-fighting truck mainly solves the problem that personnel are required to first go down to land, move the position of the pull ladder and then go up to the ladder in a fire-fighting area with large broken and detached span or area, thereby delaying the precious time for fire-fighting and rescue. The main characteristics of the device are as follows: comprises a herringbone main ladder and a track ladder connected with the main ladder; the lower end of the main ladder is provided with a bidirectional ratchet wheel; the inner sides of the two straight rods of the track ladder are provided with tracks, and the tracks are provided with sliding blocks and guide rail clamps; the main ladder is arranged on the sliding block through a bidirectional ratchet wheel; and a pawl matched with the bidirectional ratchet wheel is arranged on the sliding block. The utility model can realize the horizontal linear motion of the herringbone ladder during lower-altitude operation, increase the breaking and dismantling operation range of firefighters, enable firefighters to quickly reach the next breaking and dismantling rescue operation position, and is mainly used for firefighting rescue firefighting ladders.

Description

Can realize rectilinear movement's fire ladder structure

Technical Field

The utility model belongs to the technical field of firefighting ladders for firefighting rescue, and particularly relates to a firefighting ladder structure capable of achieving linear motion.

Background

With the continuous acceleration of the urban construction process in China, cities and towns are greatly emerging along street shops, three-in-one places (production, storage, operation and residence) and rural operational self-building houses, and most of the cities and towns exist in a multi-layer building mode of 'lower shop upper house, front shop rear house', namely first-floor operation, second-floor residents, once a fire disaster occurs, people are difficult to escape from the first floor, people are often trapped at the two-floor and three-floor outer window anti-theft network, and the first-line firefighter is particularly important how to quickly and safely rescue trapped people or people to escape by self-rescue after arriving at the scene.

The auxiliary fire rescue escape ladder is important equipment for first-line firefighters to break and tear rescue people, extinguish fire and rescue people and save oneself and escape, firefighters can quickly arrive at obstacles such as outer windows of second building or third building, billboards and the like to break and tear open, extinguish fire and rescue when the multi-layer building breaks out fire, the auxiliary fire rescue escape ladder is an improvement and reinforcement of the pull ladder of 6 meters and 9 meters of active equipment, is beneficial supplement to the fire-fighting cloud ladder vehicle, can be used for emergency self-rescue and escape of living people in the places, and has wide application prospect in the fields of fire rescue and civil fire prevention and escape. The requirements of fire-fighting rescue actual combat on the fire-fighting auxiliary rescue escape ladder generally have three aspects: firstly, the ladder is light in structure, 1-2 firefighters can carry the ladder lightly and can be quickly installed and arranged; secondly, the structure has strong practicability, and can realize the operation of breaking and disassembling the fire external window and the advertising board of the multi-storey building (the heights of the second building and the third building); thirdly, the structure is safe and reliable, and a safe operation escape space can be provided for firefighters and trapped masses.

At present, when people are trapped in the national comprehensive fire rescue team, a 6-meter bamboo pull ladder, a 9-meter metal pull ladder and the like are generally adopted as main battle auxiliary rescue escape equipment, but the equipment also exposes the following defects in actual combat, when an anti-theft net and a billboard with large broken and detached span or area are encountered, the people also need to first pull down to land and then move the pull ladder, and the user can continue to operate, so that the precious time of fire-fighting and rescue is delayed. Based on the above practical problems, the design of the fire ladder also considers the maneuverability of the structure and the safety of operation escape, thereby realizing the efficient and rapid maneuver of the breaking, dismantling and rescuing people.

Disclosure of Invention

The utility model aims to provide the firefighting auxiliary rescue escape ladder capable of achieving linear motion aiming at the defects, and the two-section foldable double-herringbone ladder structure is adopted, so that two kinds of work at different heights can be achieved, and the horizontal linear motion of the firefighting ladder can be achieved during low-altitude work, so that the firefighting operation range is enlarged.

The technical scheme of the utility model is as follows: can realize rectilinear movement's fire control ladder structure, including the main ladder of chevron shape and the track ladder of being connected with main ladder, characterized by: the lower end of the main ladder is provided with a bidirectional ratchet wheel; the inner sides of the two straight rods of the track ladder are provided with tracks, and the tracks are provided with sliding blocks and guide rail clamps; the main ladder is arranged on the sliding block through a bidirectional ratchet wheel; and a pawl matched with the bidirectional ratchet wheel is arranged on the sliding block.

The bottom of the sliding block is provided with a sliding groove matched with the upper rail of the rail ladder, and the upper part of the sliding block is provided with a mounting groove matched with the lower end of the main ladder; the lower end of the main ladder is arranged on a ratchet shaft of the bidirectional ratchet wheel and is arranged on the sliding block through the bidirectional ratchet wheel; pawls are arranged on two outer sides of the sliding block.

The guide rail clamp in the technical scheme of the utility model consists of a rectangular clamp frame and a rotary handle arranged at the side part of the rectangular clamp frame; the bottom of the rectangular clamping frame is provided with an open slot matched with the rail on the rail ladder.

The upper end of the track ladder is provided with a guide rail fixing piece.

The guide rail fixing piece in the technical scheme of the utility model consists of a bolt and bolt holes arranged on the outer side surfaces of the upper ends of the two rail ladders; the bolt comprises a bolt plate and a bolt rod arranged on the bolt plate, and the bolt rod is matched with the bolt hole.

The technical proposal of the utility model also comprises a workbench; the bottom of the workbench is provided with a clamping device matched with the cross rod of the main ladder; the main ladder and the track ladder are made of aluminum alloy.

The clamping device in the technical proposal of the utility model is a sliding clamping device; the workbench bottom is provided with a workbench bottom plate, two slidable tracks are arranged on the two sides of the workbench bottom plate in the length direction, and two clamping devices are arranged on each track.

The workbench comprises a rectangular guardrail frame arranged on a workbench bottom plate; the rectangular guardrail frame consists of vertical bars arranged at four corners of a bottom plate of the workbench, a middle rectangular transverse frame connected to the middle parts of the four vertical bars and an upper rectangular transverse frame connected to the upper parts of the four vertical bars.

The technical scheme of the utility model is that one identical side surface of the middle rectangular transverse frame and one identical side surface of the upper rectangular transverse frame are open ports or are movably connected with the middle transverse bar and the upper transverse bar; the upper rectangular transverse frame is provided with a fixed pulley and a safety buckle.

The top of the main ladder in the technical solution of the utility model is rotatably connected through a connecting shaft; the outer end of the connecting shaft is provided with a fixed pulley; the lower part of the track ladder is provided with a support foot rest which is rotatably connected; and a foldable reinforcing rod is arranged on the main ladder.

The utility model adopts a fire ladder structure which consists of a herringbone main ladder and a rail ladder connected with the main ladder and can realize linear motion, wherein, the lower end of the main ladder is provided with a bidirectional ratchet wheel, the inner sides of two straight rods of the rail ladder are provided with rails, the rails are provided with sliding blocks and a guide rail clamp, the main ladder is arranged on the sliding blocks through the bidirectional ratchet wheel, and the sliding blocks are provided with pawls matched with the bidirectional ratchet wheel, so that when a second floor (3 m-4 m) works at lower altitude, the rail ladder can be rotated to be in a horizontal state through the bidirectional ratchet wheel and the pawls, and the opening degree of the main ladder is adjusted through the sliding blocks and the guide rail clamp and is fixed on the rail ladder; when fire-fighting work at a certain position is completed and the fire-fighting work is carried out at an adjacent position, only a firefighter on the ground directly pushes the whole firefighting ladder to the adjacent position after loosening the firefighter through the guide rail clamp, and the firefighter on the ladder does not need to move down to the ground and precious rescue time is saved; when working at a higher position of the third floor (6 m-7 m), the rail ladder is not used as a rail any more, but is unfolded to be used as a herringbone ladder, so that the working height of the herringbone ladder is increased.

The utility model has the following advantages:

1. the structure is light, the double ladder can be unfolded and folded quickly, the rescue platform is built in a short time, and the rescue time is greatly reduced;

2. the horizontal linear motion of the herringbone ladder can be realized during lower-altitude operation, the breaking and dismantling operation range of firefighters is enlarged, and firefighters can quickly reach the next breaking and dismantling rescue operation position;

3. the device can provide a stable and reliable operation platform for firefighters, solves the problem of narrow operation space, ensures the operation safety of firefighters, and can provide a safe and sparse platform for rescuing trapped personnel;

4. the ladder top operation platform is designed with the fixed pulley for the lifting of the breaking and disassembling equipment, so that the 'person-to-person separation' of a firefighter in the step climbing process can be realized, double hands are liberated to the maximum extent, and the operation safety is improved.

Drawings

In order to more clearly illustrate the present herringbone ladder structure, the drawings that are required for the herringbone ladder structure will be briefly described.

Fig. 1 is a structural view of the folded fire ladder of the present utility model.

Fig. 2 is an enlarged view of a portion of the junction of two sections of ladder of the fire ladder of the present utility model.

Fig. 3 is an expanded view of the first operating condition of the fire ladder of the present utility model.

Fig. 4 is an enlarged view of a portion of a track of a first operating condition of the fire ladder of the present utility model.

Fig. 5 is a partially enlarged view of a track in a first operating condition of the fire ladder of the present utility model.

Fig. 6 is an expanded view of the second operating condition of the fire ladder of the present utility model.

Icon: 1-a main ladder; 2-track ladder; 3-connecting shaft; 4-reinforcing rods; 5-a rail clamp; 6-sliding blocks; 7-a bidirectional ratchet; 8-pawl; 9-a workbench; 10-a clamp; 11-supporting foot frames; 12-rail mount.

Detailed Description

In order to make the structural form and advantages of the fire ladder capable of realizing linear motion more clear, the structural form of the fire ladder of the utility model will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, an embodiment of the fire ladder structure capable of realizing linear motion of the present utility model is composed of a main ladder 1, a rail ladder 2, a bidirectional ratchet 7, a pawl 8, a slider 6, a rail clamp 5, a table 9, a fixed pulley and a safety buckle.

The main ladder 1 is a herringbone ladder, and the tops of the main ladder are rotatably connected through a connecting shaft 3. The number of the track ladders 2 is two, and the track ladders are correspondingly connected with the main ladder 1. The main ladder 1 is a first section ladder, and the track ladder 2 is a second section ladder. The main ladder 1 and the track ladder 2 are made of aluminum alloy materials, and the structure is light and reliable. The middle part of the main ladder 1 is provided with a conventional foldable reinforcing rod 4. The lower part of the track ladder 2 is provided with a rotatably connected supporting foot rest 11. The support foot rest 11 comprises long bracing piece and short bracing piece, and long bracing piece upper end rotatable coupling is at track ladder 2, and the both ends of short bracing piece rotatable coupling track ladder 2 respectively with long bracing piece between.

The main ladder 1 and the track ladder 2 are connected through a bidirectional ratchet wheel 7, a sliding block 6 and a pawl 8. The inner sides of the two straight rods of the track ladder 2 are provided with tracks. The sliding block 6 is composed of a sliding groove at the bottom and a mounting groove at the upper part, the sliding groove is matched with a track on the track ladder 2, and the mounting groove is matched with the lower end of the main ladder 1 and the bidirectional ratchet 7. The sliding block 6 is arranged on the track of the track ladder 2 through a sliding groove. The four lower ends of the main ladder 1 are all fixed at the middle part of a ratchet shaft of the bidirectional ratchet 7, and two side parts of the ratchet shaft of the bidirectional ratchet 7 are fixed on two side walls of the chute. Pawls 8 which are matched with corresponding bidirectional ratchet wheels 7 are arranged on the two outer sides of the sliding block 6. Fig. 1 is a structural view of a folded fire ladder, which is a symmetrical structure. The bidirectional ratchet mechanism has the functions that: when the movement direction of the bidirectional ratchet mechanism is set, the structure can only rotate in one direction, and can not rotate in the other direction. The bidirectional ratchet wheel 7 arranged on the main ladder 1 and the pawl 8 arranged on the sliding block 6 form a bidirectional ratchet mechanism, and the cooperation of the bidirectional ratchet wheel and the pawl can control the unfolding angle between the track ladder 2 and the main ladder 1.

The guide rail clamp 7 is composed of a rectangular clamp frame and a rotary handle arranged at the side part of the rectangular clamp frame. The bottom of the rectangular clamping frame is provided with an open slot matched with the rail on the rail ladder 2, the guide rail clamp 7 can be sleeved on the rail of the rail ladder 2 through the open slot, and can be locked on the rail of the rail ladder 2 through the rotating handles at two sides. Four rail clamps 7 are provided on the outer side of the slider 6. The slide block 6 is fixedly welded with the guide rail clamp 5, the guide rail clamp 5 is used for supporting and guiding the moving part to do reciprocating linear motion according to a given direction, the moving part cannot move during locking, the moving part can move during unlocking, and the guide rail clamp 5 can realize linear motion under the condition of high load. The rail clamp 5 can control the movement of the slide block 6, i.e. the rail clamp 5 can control the relative movement of the rail ladder 2 and the main ladder 1. The rail clamp 5 and the bi-directional ratchet mechanism also ensure a secure connection between the main ladder 1 and the track ladder 2.

The upper end of the track ladder 2 is provided with a guide rail fixing piece 12. The guide rail fixing piece 12 consists of a bolt and bolt holes arranged on the outer side surfaces of the upper ends of the two rail ladders 2; the bolt comprises a bolt plate and a bolt rod arranged on the bolt plate, and the bolt rod is matched with the bolt hole. The rail fixing member 12 is a latch-like structure and mainly serves to fix two rail ladders together and prevent the two rail ladders from being separated.

The workbench 9 is composed of a workbench bottom plate, a clamping device 10 and a rectangular guardrail frame. Two slidable rails are arranged on the two long sides of the workbench bottom plate, and two clamping devices 10 are slidably arranged on each rail. The clamping device 10 is a conventional sliding clamping device and can be matched with the cross bar of the main ladder 1 to fix and mount the workbench 9 on the cross bar of the main ladder 1. The rectangular guardrail frame consists of vertical bars arranged at four corners of the bottom plate of the workbench, a middle rectangular transverse frame connected to the middle parts of the four vertical bars and an upper rectangular transverse frame connected to the upper parts of the four vertical bars. One identical side surface of the middle rectangular transverse frame and the upper rectangular transverse frame of the rectangular guardrail frame is an open port, namely, the identical side surfaces of the middle rectangular transverse frame and the upper rectangular transverse frame are not provided with middle transverse strips and upper transverse strips, so that a person can conveniently enter and exit the workbench 9. The middle cross frame and the upper cross frame of the rectangular guardrail frame can also adopt a middle cross bar and an upper cross bar which are movably connected on the same side face, so that people can open when getting in and out, and close when working. The middle parts of the two long upward cross bars of the upper rectangular cross frame are provided with fixed pulleys for breaking and disassembling the lifting of the equipment, so that the 'people are separated' of a firefighter in the step climbing process can be realized, hands are liberated to the greatest extent, and the operation safety is improved. The two long upward cross bars of the upper rectangular cross frame are provided with the safety buckles, so that firefighters can buckle the safety buckles on the firefighters' clothes on the upper rectangular cross frame, and the safety of firefighting work is ensured.

Referring to fig. 3 and 4, the first working condition of the fire ladder is shown in the structure diagram. When the fire floor is at the second floor (3 m-4 m), the fire ladder does not need to be fully unfolded because the floor is not very high. At this time, only the two main ladders 1 are unfolded firstly to straighten the reinforcing rods 4, then the track ladders 2 and the main ladders 1 are unfolded through adjusting the bidirectional ratchet mechanism, the track ladders 2 are parallel to the ground and are placed on the ground, then the two track ladders 2 are contacted together through adjusting the track clamp 5, the two track ladders are fixed together through the track fixing piece 12, and meanwhile the track clamp 5 is in a locking state.

Finally, the workbench 9 is installed, and the installation space design of the workbench 9 is reserved. The workbench 9 is of a detachable structure and can be directly installed on the main ladder 1, and the workbench 9 is connected with the herringbone ladder through the clamping device 10, so that the stability and safety of the workbench are ensured, and meanwhile, a safe working space is provided for firefighters.

When a firefighter finishes fire-fighting work at the working position and needs to go to a bulkhead window to carry out the next task, the firefighter only needs to loosen the guide rail clamp 5 and push the ladder to move along the rail, and locks the guide rail clamp 5 after reaching the next working position and then carries out fire-fighting work, so that time can be saved and fire-fighting rescue work can be rapidly completed. Meanwhile, in the working state, the bottom is the rail ladder 2 which contacts the ground, so that the stress area is large and the rail ladder is stable. And the working height is not very high, and the working state is relatively safe and suitable for moving.

Referring to fig. 5, a block diagram of a second operating condition of the fire ladder is shown. When the fire floor is in a third floor (6 m-7 m), the fire ladder is required to be completely unfolded at the time due to the fact that the floor is higher, and the working position can reach about 7 m. At this time, the two main ladders 1 are unfolded firstly, the reinforcing rods 4 are straightened, and then the track ladders 2 and the main ladders 1 are unfolded for 180 degrees by adjusting the bidirectional ratchet mechanism. The slide is then moved to the top of the track ladder by adjusting the rail clamp 5 to lock it in place. After the workbench 9 is installed, for safety, the supporting foot frames 11 are installed on two sides of the fire ladder to prevent the ladder from shaking.

In summary, the fire ladder has reasonable structural design, can safely and efficiently complete fire rescue work, has strong practicality, and can also realize the linear movement of the rail of the ladder, thereby having strong innovation.

Claims

1. The utility model provides a can realize rectilinear movement's fire control ladder structure, includes chevron shape main ladder (1) and track ladder (2) be connected with main ladder (1), characterized by: the lower end of the main ladder (1) is provided with a bidirectional ratchet wheel (7); the inner sides of the two straight rods of the track ladder (2) are provided with tracks, and the tracks are provided with sliding blocks (6) and guide rail clamps (5); the main ladder (1) is arranged on the sliding block (6) through a bidirectional ratchet wheel (7); the sliding block (6) is provided with a pawl (8) matched with the bidirectional ratchet wheel (7).

2. The fire ladder structure capable of realizing linear motion according to claim 1, wherein: the bottom of the sliding block (6) is provided with a sliding groove matched with the upper rail of the rail ladder (2), and the upper part of the sliding block is provided with a mounting groove matched with the lower end of the main ladder (1); the lower end of the main ladder (1) is arranged on a ratchet shaft of a bidirectional ratchet wheel (7) and is arranged on the sliding block (6) through the bidirectional ratchet wheel (7); pawls (8) are arranged on two outer sides of the sliding block (6).

3. The fire ladder structure capable of realizing linear motion according to claim 2, wherein: the guide rail clamp (5) consists of a rectangular clamp frame and a rotary handle arranged at the side part of the rectangular clamp frame; the bottom of the rectangular clamping frame is provided with an open slot matched with the upper rail of the rail ladder (2).

4. A fire ladder structure capable of rectilinear motion according to claim 1, 2 or 3, characterized in that: the upper end of the track ladder (2) is provided with a guide rail fixing piece (12).

5. The fire ladder structure capable of realizing linear motion according to claim 4, wherein: the guide rail fixing piece (12) consists of a bolt and bolt holes arranged on the outer side surfaces of the upper ends of the two rail ladders (2); the bolt comprises a bolt plate and a bolt rod arranged on the bolt plate, and the bolt rod is matched with the bolt hole.

6. A fire ladder structure capable of realizing linear motion according to any one of claims 1-3 and 5, characterized in that: also comprises a workbench (9); the bottom of the workbench (9) is provided with a clamping device (10) matched with the cross rod of the main ladder (1); the main ladder (1) and the track ladder (2) are made of aluminum alloy.

7. The fire ladder structure capable of realizing linear motion according to claim 6, wherein: the clamping device (10) is a sliding type clamping device; the bottom of the workbench (9) is provided with a workbench bottom plate, two sliding rails are arranged on the two sides of the workbench bottom plate in the length direction, and two clamping devices (10) are arranged on each rail.

8. The fire ladder structure capable of realizing linear motion according to claim 7, wherein: the workbench (9) comprises a rectangular guardrail frame arranged on a workbench bottom plate; the rectangular guardrail frame consists of vertical bars arranged at four corners of a bottom plate of the workbench, a middle rectangular transverse frame connected to the middle parts of the four vertical bars and an upper rectangular transverse frame connected to the upper parts of the four vertical bars.

9. The fire ladder structure capable of realizing linear motion according to claim 8, wherein: one same side surface of the middle rectangular transverse frame and one same side surface of the upper rectangular transverse frame are open ports or are movably connected with the middle transverse bar and the upper transverse bar; the upper rectangular transverse frame is provided with a fixed pulley and a safety buckle.

10. A fire ladder structure capable of realizing linear motion according to any one of claims 1-3 and 5, characterized in that: the top of the main ladder (1) is rotatably connected through a connecting shaft (3); the outer end of the connecting shaft (3) is provided with a fixed pulley; the lower part of the track ladder (2) is provided with a rotatably connected supporting foot rest (11): the main ladder (1) is provided with a foldable reinforcing rod (4).