Emergency rescue device for people having difficulty in moving

Abstract

The utility model relates to an emergency rescue device for people having difficulty in moving, which comprises four pulley blocks capable of rolling along stand columns of a fire ladder and a connecting rod supporting mechanism hinged with the pulley blocks, a back plate is fixedly connected onto the connecting rod supporting mechanism, and a supporting plate for people to sit and a safety belt are fixedly arranged on the back plate. A rescue rope is fixedly connected to an upper hinge shaft of the connecting rod supporting mechanism, and an adjusting rope used for adjusting a supporting system is fixedly connected to a lower hinge shaft of the connecting rod supporting mechanism. The connecting rod supporting mechanism is an 8-shaped movable connecting rod mechanism, the width of the 8-shaped movable connecting rod mechanism can be changed, the distance width of the four pulley blocks is driven to be changed, the width of the pulley blocks can be changed by adjusting the strength of the rescue rope and the adjusting rope, the pulley blocks tightly hold the two fire ladder stand columns, and the fire ladder stand columns can be fixed. The device carries a rescued person to descend along the fire ladder and can stably reach the ground.

Description

Technical Field

[0001] This utility model belongs to the field of fire rescue ladder technology, and in particular relates to an emergency rescue device for people with limited mobility. Background Technology

[0002] Currently, in the field of building fire protection and disaster relief, the usual method for rescuing people with mobility impairments is using stretchers, which requires two firefighters to carry them along safety exits. However, during firefighting and disaster relief, manpower is limited, and safety exits are often blocked. If firefighters carry or lift people with mobility impairments, the heavy equipment they are wearing may not be enough to complete the rescue mission. Rescuing people with mobility impairments and getting them to the ground floor as quickly as possible is a major challenge. Summary of the Invention

[0003] To address the aforementioned problems, this utility model proposes an emergency rescue device for people with mobility impairments, which allows rescue missions to be completed via outdoor balconies or windows using the fire ladder, from locations accessible by fire ladders.

[0004] This utility model is implemented as follows: four pulley groups that can roll along the fire ladder column, and a linkage support system hinged to the pulley groups; a back plate is fixedly connected to the linkage support mechanism, and a seat plate and safety belt are fixedly installed on the back plate; a rescue rope is fixedly connected to the upper hinge shaft of the linkage support mechanism, and an adjustment rope for adjusting the linkage support mechanism is fixedly connected to the lower hinge shaft of the linkage support mechanism.

[0005] Furthermore, the linkage support mechanism includes two long linkages and four short linkages. The two long linkages are hinged together at a central hinge axis, which is fixedly connected to the back plate. One end of each of the two short linkages is hinged together via the upper hinge axis, and the other end is hinged to the upper end of the long linkage via a wheel hinge axis. One end of each of the other two short linkages is hinged together via the lower hinge axis, and the other end is hinged to the lower end of the long linkage via a wheel hinge axis, forming an "8"-shaped movable linkage support mechanism.

[0006] Furthermore, a slide rail is symmetrically arranged on the upper and lower parts of the back plate, and a chuck is slidably connected to the slide rail. The upper hinge shaft and the lower hinge shaft are respectively fixedly connected to the chuck of the slide rail on the upper and lower parts of the back plate.

[0007] Furthermore, the pulley block includes a pulley block bracket, two horizontal constraint rollers and one vertical load-bearing roller. The pulley block bracket is fixedly connected to the wheel hinge shaft and the connecting rod support mechanism. The load-bearing roller is rotatably connected to the fire ladder column, and the two horizontal constraint rollers are rotatably connected to the side of the fire ladder column.

[0008] Furthermore, the axis of the wheel hinge shaft is parallel to the axis of the horizontal constraint roller and perpendicular to the axis of the vertical bearing roller; a bracket protrusion is provided at each of the two outer corners of the pulley block bracket, with a direction parallel to the axis of the wheel hinge shaft.

[0009] Furthermore, the back panel is 1.3-1.5 meters long and 45-65 centimeters wide, with the support plate fixedly positioned slightly below the center of the back panel. Two safety belts are provided: one is a hip belt and the other is a chest belt.

[0010] Furthermore, the slide rail consists of two parallel metal slide rails located on the longitudinal axis of the back plate, with a gap of 4-6 cm between them, and the upper hinge shaft and the lower hinge shaft slide between them.

[0011] Furthermore, the length of the long link is twice the length of the short link.

[0012] The beneficial effects of this invention are: it enables rescuers with limited mobility to safely descend from heights to the ground in locations accessible by various types of fire ladders. Regardless of the width or narrowness of the distance between the two columns of the fire ladder, or the variation in the distance between the columns in the air, this invention can adjust the width of the pulley system by adjusting the rescue rope and the tension of the regulating rope. This allows the pulley system to grip the two fire ladder columns tightly, ensuring a smooth and stable descent to the ground. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a schematic sectional view of the present invention (AA section).

[0015] Figure 3 This is a schematic cross-sectional view of the present invention.

[0016] Figure 4 This is a schematic diagram of the linkage support mechanism (wide ladder) of this utility model.

[0017] Figure 5 This is a schematic diagram of the back structure of the pallet of this utility model;

[0018] Figure 6 This is a schematic diagram of the linkage support mechanism (narrow ladder) of this utility model;

[0019] Figure 7 This is a three-dimensional structural diagram of the pulley block of this utility model.

[0020] In the diagram: 11 Long connecting rod, 12 Short connecting rod, 131 Wheel hinge shaft, 132 Upper hinge shaft, 133 Lower hinge shaft, 14 Center hinge shaft, 2 Back plate, 21 Support plate, 22 Hip harness, 23 Chest harness, 24 Chuck, 25 Slide rail, 26 Handle, 3 Pulley block, 31 Horizontal restraint roller, 32 Vertical load-bearing roller, 33 Pulley block bracket, 34 Bracket protrusion, 7 Rescue rope, 71 Adjusting rope, 8 Fire ladder upright. Detailed Implementation

[0021] This embodiment describes an emergency rescue device for people with mobility impairments, see attached document. Figure 1 To be continued Figure 7 The rescue device comprises three components: four pulley sets 3 that roll along the fire ladder column, a linkage support mechanism hinged to the pulley sets 3, and a seating plate 21 and a back plate 2 fixedly connected to the linkage support mechanism. Each pulley set 3 includes two horizontal restraint rollers 31 and one vertical load-bearing roller 32. These three rollers rotate freely along their respective axles, which are fixed at different positions on the same pulley set bracket 33.

[0022] The linkage support mechanism includes two long links 11 and four short links 12. The two long links 11 are hinged at the position of the central hinge axis 14, which extends on the upper side and is fixedly connected to the back plate 2.

[0023] The upper hinge shaft 132 hinges the ends of the two short connecting rods 12 together. The upper hinge shaft 132 extends at both ends; one end passes through the gap between the two slide rails 25 and is fixedly connected to a chuck 24, while the other end has a hole for fixing the rescue rope 7. The other two ends of the two short connecting rods 12 are respectively hinged to the ends of the two long connecting rods 11 and the pulley block bracket 33 via wheel hinge shaft 131. The lower hinge shaft 133 hinges the ends of the other two short connecting rods 12 together. The lower hinge shaft 133 extends at both ends; one end passes through the gap between the two slide rails 25 and is fixedly connected to a chuck 24, while the other end has a hole for fixing the adjusting rope 71. The other two ends of the two short connecting rods 12 are respectively hinged to the other ends of the two long connecting rods 11 and the pulley block bracket 33 via wheel hinge shaft 131, thus forming an 8-shaped movable linkage support mechanism. Pulling the rescue rope 7 upwards narrows the linkage support mechanism. Pulling the adjustment rope 71 upwards loosens the linkage mechanism of the rescue rope 7, causing the spacing between the four pulley groups 3 to change.

[0024] The back panel 2 is 1.3 to 1.5 meters long and 45 to 65 centimeters wide, symmetrical along its longitudinal axis, and has rounded corners. The geometric center of the back panel 2 is fixedly connected to the central hinge axis 14 of the linkage mechanism. A support plate 21 is fixed perpendicular to the longitudinal axis at a position slightly below the center of the back panel 2. Two seat belts that can be quickly locked and unlocked are fixedly connected to the back panel 2, one is a hip seat belt 22, and the other is a chest seat belt 23.

[0025] like Figure 5 As shown, two parallel metal slide rails 25 are fixedly installed on the upper part of the back side of the back plate 2. The slide rails 25 are located on the longitudinal axis and the gap between the slide rails 25 is 4-6cm, which allows the upper and lower hinge shafts 133 to slide between them. There is a gap of 2-6cm between the slide rails 25 and the back plate 2, which allows the chuck 24 to slide within the gap. In this way, the upper and lower chucks 24 and the central hinge shaft 14 together fix the back plate 2.

[0026] The length of the long connecting rod 11 is twice the length of the short connecting rod 12. The horizontal constraint roller 31, the vertical bearing roller 32, and the wheel hinge shaft 131 are fixed on the pulley block bracket 33. The axis of the wheel hinge shaft 131 is parallel to the axis of the horizontal constraint roller 31 and perpendicular to the axis of the vertical bearing roller 32. At the corner of the pulley block bracket 33, there are two bracket protrusions 34 parallel to the axis of the wheel hinge shaft 131. The connecting rod can block the bracket protrusions 34, preventing the pulley block 3 from rotating arbitrarily, and ensuring that the constraint roller always rotates only slightly towards the fire escape column 8.

[0027] The usage method and working principle of this embodiment are as follows:

[0028] During fire rescue, the device can be pulled up the fire ladder using pulley block 3, or a firefighter can lift the device up the ladder by holding handle 26. The following steps should be followed when carrying out the rescue:

[0029] S1. Place the device flat next to the person with mobility impairment who needs rescue, with the four pulley sets 3 at the bottom, the back plate 2 and the support plate 21 on top, and unfasten the hip safety belt 22 and the chest safety belt 23.

[0030] Place the person with mobility impairment on the backrest 2, face up with their back against the backrest 2, head in the direction of the upper hinge axis 132, feet in the direction of the lower hinge axis 133, waist against the central hinge axis 14, and buttocks against the support plate 21. After positioning, tighten the hip harness 22 and chest harness 23.

[0031] Two people, each holding one of the two handles 26 on either side of the backplate 2, lift the device and the person being rescued together to a window or balcony with a fire ladder. Align the pulley block 3 with the fire ladder column 8 and slowly tilt the backplate 2 so that the pulley block 3 on the back of the backplate 2 at the foot end is close to the top of the fire ladder. During this time, a firefighter holds the rescue rope 7 and the adjusting rope 71 from the upper hinge shaft 132. At this time, the rescue rope 7 and the adjusting rope 71 are adjusted so that the movable linkage mechanism plays an adjusting role. The width of the four pulley blocks 3 can be changed. Slowly tilt and lower the backplate 2 and adjust the four pulley blocks 3 so that the rollers are respectively attached to the two fire ladder columns 8.

[0032] The two people lifting the backboard 2 slowly released the handle 26, while the firefighters tightened the rescue rope 7 and the horizontal restraint roller 31 to tightly bind the two fire ladder columns 8. They slowly lowered the rescue rope 7 so that the device carrying the rescued person would slowly descend until it landed and was received by the ground personnel.

[0033] Fire brigades use many types of professional fire ladders, including telescopic and extended types. These ladders have a variation in the support column 8 at the connection point between two sections, being wider at the bottom and narrower at the top. This utility model is an emergency rescue device for people with mobility impairments that can be used on various types of fire ladders, especially those with a variable support column 8.

[0034] During step S3, firefighters adjust rescue rope 7 and adjusting rope 71, which allows the movable linkage mechanism to play an adjusting role. The distance between the four pulley blocks 3 can be changed to adapt to different types of fire ladders.

[0035] For fire ladders that can be extended and retracted, during the operation of step S4, when the device descends and encounters the widened fire ladder column 8, it may get slightly stuck. At this time, the firefighter controlling the rescue rope 7 and the adjusting rope 71 pulls the adjusting rope 71 with appropriate force, and the width of the four pulley groups 3 of the movable linkage mechanism is increased. The rescue rope 7 and the adjusting rope 71 are slowly lowered, and the rollers of the four pulley groups 3 are respectively attached to the two widened fire ladder columns 8, and then the descent continues.

[0036] The above process requires firefighters to train frequently and master the adjustment of the rescue rope 7 and the adjusting rope 71 according to the different weights of the rescued persons, so as to be able to successfully complete the rescue on fire ladder columns 8 of different widths.

[0037] This utility model is made entirely of lightweight, high-strength, fire-retardant materials and has no electrical structure. The back plate 2, support plate 21, and pulley block 3 are made of fire-retardant lightweight hard plastic material; all hinge shafts, chucks 24, and slide rails 25 are made of high-strength alloy; all connecting rods and pulley block supports are made of lightweight alloy; and the rescue rope 7 and adjusting rope 71 are made of fire-retardant plastic fiber material.

[0038] This utility model can adapt to fire ladders of different widths. By adjusting the tension of the rescue rope 7 and the adjusting rope 71, the width of the upper and lower "diamonds" of the "8"-shaped support mechanism can be adjusted, thereby changing the distance between the pulley blocks 4, so that the pulley blocks 3 can hold the two fire ladder columns 8 tightly and descend smoothly and stably to the ground.

[0039] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An emergency rescue device for people with mobility impairments, characterized in that, The rescue device includes: four pulley groups (3) that can roll along the fire ladder column (8), and a linkage support mechanism hinged to the pulley groups (3). A back plate (2) is fixedly connected to the linkage support mechanism. A seat plate (21) and a safety belt are fixedly installed on the back plate (2). A rescue rope (7) is fixedly connected to the upper hinge shaft (132) of the linkage support mechanism. An adjustment rope (71) for adjusting the support system is fixedly connected to the lower hinge shaft (133) of the linkage support mechanism.

2. The emergency rescue device for people with mobility impairments according to claim 1, characterized in that, The linkage support mechanism includes two long links (11) and four short links (12). The two long links (11) are hinged at the central hinge axis (14) at a cross intersection. The central hinge axis (14) is fixedly connected to the back plate (2). One end of the two short links (12) is hinged together through the upper hinge axis (132), and the other end is hinged to the upper end of the long link (11) through the wheel hinge axis (131). One end of the other two short links (12) is hinged together through the lower hinge axis (133), and the other end is hinged to the lower end of the long link (11) through the wheel hinge axis (131), forming an "8" shaped movable linkage support mechanism.

3. The emergency rescue device for people with mobility impairments according to claim 1, characterized in that, The back plate (2) is symmetrically provided with a slide rail (25) on the upper and lower parts, and the chuck (24) is slidably connected to the slide rail (25). The upper hinge shaft (132) and the lower hinge shaft (133) are respectively fixedly connected to the chuck (24) of the upper and lower slide rails.

4. The emergency rescue device for persons with limited mobility according to claim 2, characterized in that, The pulley block (3) includes a pulley block bracket (33), two horizontal constraint rollers (31) and a vertical bearing roller (32). The pulley block bracket (33) is fixedly connected to the connecting rod support mechanism through the wheel hinge shaft (131). The vertical bearing roller (32) is rotatably connected to the fire ladder column (8). The two horizontal constraint rollers (31) are rotatably connected to the side of the fire ladder column (8).

5. The emergency rescue device for people with mobility impairments according to claim 4, characterized in that, The axis of the wheel hinge shaft (131) is parallel to the axis of the horizontal constraint roller (31) and perpendicular to the vertical bearing roller (32); a bracket protrusion (34) is provided on each of the two outer corners of the pulley block bracket (33) in a direction parallel to the axis of the wheel hinge shaft (131).

6. The emergency rescue device for people with mobility impairments according to claim 1, characterized in that, The back panel (2) is 1.3-1.5 meters long and 45-65 centimeters wide. The support plate (21) is fixedly installed at the lower center of the back panel (2). There are two safety belts, one is a hip safety belt (22) and the other is a chest safety belt (23).

7. The emergency rescue device for people with mobility impairments according to claim 3, characterized in that, The slide rail (25) consists of two parallel metal slide rails located on the longitudinal axis of the back plate (2), with a gap of 4-6 cm between them. The upper hinge shaft (132) and the lower hinge shaft (133) slide between them.

8. The emergency rescue device for people with mobility impairments according to claim 2, characterized in that, The length of the long link (11) is twice the length of the short link (12).

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