Goods-carrying and two-person-carrying high-low building fire-fighting stair-climbing

Abstract

The invention provides a cargo-transporting and two-person-carrying high-low building fire-fighting stair-climbing vehicle (the fire is quickly extinguished when a building is on fire, and people strive for full rescue). Two crawler belts are arranged on the belly part of the vehicle, and the vehicle can climb up and down when being put up stairs; the vehicle is fully loaded with fire extinguishing and rescuing materials and can also carry two firemen to go upstairs at the same time, and the total load is 500 Kg. The vehicle is provided with an innovative front passenger seat, a front foot pedal and a rear foot pedal on which a rear passenger stands; a rear passenger armrest is arranged at the top of the large cargo box, and a safety belt (Figure 1) can be hung on the rear passenger armrest. The vehicle can climb hundreds of meters to extinguish fire and rescue people, and is also effective in rescue in low buildings. When an outer wall is on fire, the fire extinguishing function is invalid, and the rescue function is still available. The speed of the vehicle can be adjusted during stair climbing, and the vehicle can pass through narrow stairs. Few switches are used, and operation is simple and reliable. The stair climbing vehicle is not related to various rules of fire fighting and fire extinguishing and rescuing during use, and only materials and firefighters are quickly conveyed to a fire floor and are professionally operated by the firefighters.

Description

1. Technical Field

[0001] The present invention proposes a cargo-carrying and two-person high- and low-rise firefighting climbing vehicle (fire on the building is quickly extinguished and people are rescued as much as possible). The vehicle can carry two firefighters and materials with a total weight of 500Kg. It can quickly deliver firefighters and materials to the fire floor hundreds of meters high, help to quickly extinguish the fire and try to save everyone. It is also effective in extinguishing fires and saving people on lower floors. 2. Technical Background

[0002] In the prior art, the instructions for general-purpose electric stair climbing vehicles for transporting goods clearly stipulate that they are used for buildings with seven floors or less than 20 meters without elevators. Climbing the stairs requires people to walk backwards and pull the vehicle, which is slow, has a reverse field of vision, is prone to falls when reversing, consumes a lot of physical energy, cannot climb too high a building, and is unable to undertake subsequent strong physical firefighting and rescue operations. III. Summary of the invention

[0003] The technical problems to be solved by the present invention are:

[0004] 1. Choose a crawler electric stair climbing vehicle with suitable functions on the market for innovative improvement. The inventor's company purchases the vehicle for improvement, or has it manufactured by a foundry, and avoids patent disputes with others.

[0005] 2. The present invention adopts three cargo boxes, one large and two small, to create a front seat for the car. Firefighters can drive upstairs while sitting, which can maintain their physical strength for subsequent high-physical work of extinguishing fires and rescuing people.

[0006] 3. The present invention provides a "seat cushion" with a side triangle for the front seat of the vehicle, and the upper plane is a "seat board" ( Figure 8 :1) The two planes below are pressed against the two cargo boxes, and rubber pads are attached to protect the cargo boxes ( Figure 8 :8.1,8.2,8.3), add left and right limit screws on both sides ( Figure 8 :6.1,6.2).

[0007] 4. Invented front pedal for former firefighters ( Figure 2 :1.51), the front end of the plate is welded with an anti-slip foot plate ( Figure 2 :1.52); The second function of the front pedal is to allow people to enter and exit the armrest frame and sit or leave the seat, and it is used as a "transfer" pedal ( Figure 2 : 1.51; Fig.13 :4).

[0008] 5. Invented a "rear pedal" for another firefighter to stand at the back of the car ( Figure 1 :The rear firefighter) also helps him maintain his physical strength to facilitate the subsequent high-physical work of extinguishing fires and rescuing people; the rear pedal can be automatically retracted when not in use. Figure 2 :4.1).

[0009] 6. Set up three standing handrails for the rear firefighters ( Figure 2 : 7.2; Figure 7 :8), ensure that you are standing safely when driving upstairs, and you can hook your seat belt ( Figure 1 : Firefighters later). IV. Description of the drawings

[0010] Figure 1 .Two firefighters boarded the stair climbing vehicle and prepared to start climbing the stairs.

[0011] Figure 2 .Diagram showing the names and numbers of the components of a stair climbing vehicle with three cargo boxes.

[0012] Figure 3 .The stair climbing vehicle moves vertically after the front pedals are simply folded.

[0013] Figure 4 .After the front pedal is securely retracted, the stair climbing vehicle moves vertically.

[0014] Figure 5 .Picture of a stair climbing vehicle with a cargo box being pulled diagonally on flat ground using small wheels on both sides.

[0015] Figure 6 .Diagram of the stair climbing vehicle without cargo box folded and erected as a whole.

[0016] Figure 7 .Looking down from the box cover, you can see the two box straps, ratchet tensioner and three rear handrail steel pipes.

[0017] Figure 8 .Front seat structure and main data diagram.

[0018] Fig. 9 .Front pedal structure and main data diagram.

[0019] Fig.10 .Picture above: Handrail with push button switch, switch spiral wire and electrical box.

[0020] The picture below: The handrail switch, switch spiral wire and the control panel on the top of the electrical box.

[0021] Fig.11 . Rear pedal and strong torsion spring diagram (a), small diagram A is a diagram of the cargo plate tilted downward 3.3°, which can make it coincide with the rear plane of the large cargo box.

[0022] Fig.12 .Front pedal and strong torsion spring diagram (b).

[0023] Fig.13 .Firefighters enter the handrail frame from the right side of the vehicle.

[0024] Fig.14 .Accessories: ①Pipe clamp ②Hook ③Triangular safety hook ④Anti-drop small cargo hook ⑤Wire rope ring ⑥Clip

[0025] Fig.15 .①: Stair climbing car circuit diagram

[0026] ②: Comes with 220V AC power supply diagram.

[0027] Upper and lower battery connection: 48V vehicle battery and self-contained battery are used in parallel.

[0028] aFor car use, can climb higher buildings.

[0029] b For inverter, can provide longer-lasting 220V AC power. V. Specific implementation methods

[0031] 1.a. Front seat structure

[0032] Choose a large plastic cargo box and two identical small plastic cargo boxes, place them on the vehicle body, put two small boxes on the lower layer, and place the rear small box horizontally against the loading board; place the front small box vertically to hold the horizontal box; place a large box on the upper layer, and hold it against the loading board from the back; the loading board and the rear plane of the large box are aligned ( Figure 4 :8,8.1; Fig.12 :A). This combination creates a "seat space" in the front of the car ( Figure 2 : The “space” below 6).

[0033] b. Front seat "cushion" structure

[0034] For this space, a "seat cushion" with a triangular side is designed. When the vehicle climbs stairs, the upper surface of the "seat cushion" is horizontal, with an area of ​​420×200mm. This is the "seat board". This "seat cushion" is welded with metal materials: two 60×60×5mm stainless angle steels are reversed, and three 100×30×5mm flat steels are used to weld the two angle steel planes ( Figure 8 :2.1,2.2,4.1,4.2,4.3); the vertical surface of the angle steel at the back is heightened; weld 4 160×30×5mm flat steels ( Figure 8 :3.1,3.2,3.3,3.4) Weld the seat plate 420×200×5~6mm between the two angle steels, and weld 4 reinforcing ribs 160×15×8~10mm on the lower plane of the plate ( Figure 8 :1,1.1,1.2,1.3,1.4); a φ30×480×2~3mm stainless steel round tube is welded on the front plane of the front angle steel ( Figure 8 :5); The weld is lower than the round tube, and there are limit screws on the left and right sides of the seat cushion ( Figure 8 :6.1,6.2). Rubber pad tapes of different thicknesses are attached to the lower rear of the triangular "seat cushion" where it is pressed against the plastic box ( Figure 8 :8.1,8.2,8.3). The cushion material is welded from stainless steel or aluminum alloy.

[0035] 2. Front pedal structure

[0036] The front pedal is located under the front seat. Before the vehicle starts, its board surface is flush with the nearest stair step with an error of ±10mm ( Figure 2 :1.51,1.5). It uses 40×20mm square tubes to weld into a 430×350mm square frame, three horizontal square tubes are welded in the middle of the frame, and a 2.5-3mm patterned anti-slip stainless steel plate is welded on the upper plane ( Fig. 9 :1,2.1,2.2,2.3,4.1). At the rear of the plate, a long shaft φ10×530mm is inserted into the tube, and both ends have threads M10×10mm ( Fig. 9 :3). There are left and right "angle steel bars" 200×30×4mm ( Figure 2 : 1.4), can rotate up and down, and an "angle iron seat" is welded on the car frame behind the "angle steel bar" to prevent the "angle steel bar" from bending ( Figure 6 :1), pre-drill a hole of φ10.1mm at the other end of the angle steel bar, insert the long axis of the front pedal into the above holes of the left and right angle steel bars, and tighten them with self-locking nuts on the outside ( Figure 2 :1.41). Use a φ4mm soft stainless steel wire rope to bend into two long and short sections on each side of the frame, and add a steel rope ring ( Fig.14 ⑤), hang the frame horizontally at the front and rear ends ( Figure 2 :1.61,1.62), the cable is clamped with a chuck ( Figure 2 : 1.6; Fig.14 :⑥), hang it on the lower screw of the "pipe clamp" on the handrail close to the car body ( Figure 2 :3.1,3.10; Fig.14 :①). The "pipe clamp" can slide easily on the handrail; a 360×80×5mm steel plate is welded in front of the square frame to prevent the feet from slipping. When the front pedal is not in use, it can be flipped backwards and upwards, and the handle with a handle screw that fixes the handrail can be used to clamp it so that it does not fall back ( Figure 4 :1,3,6); when not in use, it can be easily flipped up ( Figure 3 :1,2).

[0037] 3. Rear pedal structure

[0038] The rear pedal structure is similar to the loading board structure: a square tube of the same specification is notched and bent into a U-shaped frame with the same width as the loading board, and the front is extended by 15 to 30 mm. Fig.11 :1), weld three horizontal frame bars, and weld a 2.5~3mm thick patterned anti-slip stainless steel plate on top ( Fig.11 :1,1.1,1.2,1.3,9); Pre-drill two φ10.1mm holes horizontally at the two openings of the U-shaped frame ( Fig.11 :4.1,4.2), can be used to pass through φ10×430mm long shaft, the two ends of the long shaft have thread M10×10mm ( Fig.11:4); Weld two 25mm wide and 4~5mm thick connecting strips 30mm in front of the rotation of the inner frame of the loading plate, whose length is twice the side length of the square tube, and pre-drill a hole of 10.1mm at the bottom ( Figure 4 : 6); use the long axis to penetrate the two holes at the opening of the U-shaped frame and the two holes of the connecting strip, and tighten the two ends with self-locking nuts so that it can rotate and can be close to the loading plate ( Figure 4 :7,8); Before welding the patterned anti-skid plate, first weld two long nuts for installing the universal wheels. The universal wheels are located under the rear pedal below the front of the loading plate ( Figure 4 :9);After that, the pedal is positioned with two flat ropes on the left and right when standing: the rear pedal is tilted forward 5°~8° when going upstairs ( Figure 1 : rear pedal), the flat rope is tied to the anti-drop small cargo hook ( Figure 2 :8.21; Fig.14 :④).

[0039] 4. Tighten the box straps

[0040] The present invention uses two left and right tight box belt head triangular hooks ( Figure 2 :7.11; Fig.14 :③), hook the φ30mm rings above the two sliding "pipe clamps" on the car handrail near the car body ( Figure 2 :3.1,3.11); The rear section of the box tightening belt is connected to the two ratchet tighteners on the top of the large box ( Figure 2 : 7.3; Figure 7 :9.1,9.2). Above the tightener, there are three φ30×550×2~3mm stainless steel pipes, each parallel and 15cm apart. The first pipe is 10~20cm away from the edge of the cargo box. The two ends of each pipe are wrapped with a box-tightening flat belt, each fixed with a through screw and nut, and the wrapped part is clamped with a chuck ( Fig.14 ⑥) Clamp the flat belt; the flat belt on the upper part of the clamp wraps the round tube, and the flat belt on the lower part of the clamp is separated and tightened; when tightened, the clamp makes the steel tube vacate the box cover 20-25mm, which is convenient for holding the steel tube; three steel tubes provide the best choice for the firefighters on the rear pedal. The steel tube can also be connected to the rear firefighter safety belt ( Figure 1 ).

[0041] A flat belt is hung on the horizontal column at the lower end of each tensioner, which is clamped by a chuck and divided into two long and short sections. The short section is connected to a triangular safety hook and hooked to the eye screw on the loading plate ( Figure 2 :8.1,8.11; Fig.14 :③); Long section connecting anti-drop small cargo hook ( Fig.14 :④), hook the eye screw on the rear pedal ( Figure 2 :8.2,8.21). When adjusting the long flat belt, first tighten the ratchet tensioner, tighten the cargo box, and then adjust the length of the left and right rear pedal flat belts so that the rear pedals are tilted forward 5°~8° when standing upstairs ( Figure 1 ).

[0042] 5. Add self-provided electricity

[0043] The small box at the back of the stair climbing vehicle is equipped with three 48V15~20AH lithium batteries for parallel use, and the stair climbing vehicle has its own 220V AC power. A DC to AC inverter is installed, with a rated power of 3000~4000W. This battery can be used in parallel with the original vehicle battery, with more power, and can climb higher buildings; its own AC power can support more subsequent rescue power.

[0044] 6. Inventing a method of using an object

[0045] 6.1 Seats for entering and exiting the vehicle:

[0046] Pull the stair climbing vehicle diagonally or vertically ( Figure 5 ; Figure 3 ), walk to the stairs, first retract the inclined walking wheels, tilt the vehicle body to put the crawler tracks on the stairs, and then people can get on the vehicle ( Figure 1 ).

[0047] a. How the front firefighter enters and exits the seat: first put down the front pedal, and then extend the armrest frame as needed ( Figure 1 If a person enters the handrail frame from the right, his left hand holds the horizontal right section of the frame ( Fig.13 :3), hold the frame corner straight part with your right hand ( Fig.13 :2). Stand firmly with your right foot, bend your left foot into a hook shape and lift it over the connection between the lower part of the handrail frame and the vehicle body ( Fig.13 ), the person slightly turns his body, puts his left foot on the front pedal, and moves to the left to make room for his right foot; the next step is to hold the left horizontal section of the square frame with his left hand and the right section with his right hand; the body's center of gravity moves to his left foot, and then he lifts his right foot into a hook shape and crosses the connection between the lower part of the square frame and the car body, and steps on the front pedal. The front firefighter then enters the handrail frame. After the front firefighter stands firmly on the front pedal, he does not release his hands holding the horizontal section of the frame, and sits back on the front seat of the car ( Figure 1 ). At this time, both hands can hold the front horizontal section of the handrail frame, and the thumb can press the switch to drive upstairs. The firefighter enters the seat from the left side of the handrail frame in the same way; the reverse procedure is followed when leaving the frame. b Method for the rear firefighter to enter and exit the rear standing position: The rear firefighter presses down the rear pedal with his hand, then steps on the rear pedal with his right foot, releases his hand, stands up and steps on the rear pedal with his left foot. After stepping firmly, fasten the seat belt, then hold the rear handrail steel pipe with both hands or one hand, whichever one is suitable ( Figure 1 ). Press the rear pedal and reverse the procedure.

[0048] 6.2 Climbing stairs

[0049] Before the two people entered the position, the front firefighter had adjusted all kinds of switches on the control panel, and the speed should be set to the confirmed slow position. Start the car with the left hand. If you need to go faster, the right hand can easily adjust the speed knob. Other switches will not be changed on the way upstairs.

[0050] 6.3 Getting off and transferring to another vehicle

[0051] When the vehicle reaches the upper floor and just sees the floor plane, it needs to stop and both firefighters get off. After the front firefighter leaves the vehicle, he goes to the vehicle handrail and controls the stair climbing vehicle in reverse. The method is the same as that of similar crawler stair climbing vehicles: press the button switch to make the vehicle slowly climb the last step to the floor plane. If the floor is wide, you can put down the two small wheels beside the crawler and turn the vehicle diagonally ( Figure 5 ); If the floor is narrow, the vehicle will climb vertically when climbing up, using the rear large wheels and rear pedal wheels to walk upright ( Figure 3 ); After reaching a higher level of stairs, align the position, tilt the vehicle body, put the tracks against the stairs, and the front and rear firefighters take their seats and positions, then you can go upstairs again.

[0052] If the reverse inching button switch is not convenient, you can add an identical button switch, parallel to the original switch, and adjust the installation to the most convenient angle.

[0053] Name of the marking object

[0055] Figure 2 :1 Car body 1.1 Car big wheel 1.2 Handle screw 1.3 Car handrail 1.4 Angle steel bar 1.4 1 Angle steel bar hole 1.5 Stair step 1.5 1 Front pedal 1.5 2 Front footboard 1.5 3 Eye screw 1.6 Clamp 1.6 1 Short wire rope 1.6 2 Long wire rope 1.6 3 Clamp 2 Track 3 Handrail frame 3.0 Push button switch 3.0 1 Spiral wire (the actual length of the spiral is 5 to 6 times the figure, the same as the following figure) 3.1 Pipe clamp 3.10 Pipe clamp Screw 3.11 Steel ring 4 Loading board 4.0 Oblique walking wheel 4.1 Rear pedal 4.2 Buckle 4.3 Universal wheel 4.4 Right limit plate 5.1 Horizontal small cargo box 5.2 Vertical small cargo box 5.3 Large cargo box 6 Front seat board 6.1 Leg guard steel pipe 7 Upper flat cable box belt 7.11 Safety hook 7.2 Rear handrail steel pipe 7.3 Ratchet tensioner 8.1 Lower flat cable (short section) 8.11 Safety hook 8.2 Lower flat cable (long section) 8.21 Anti-drop small cargo hook

[0056] Figure 3 :1 front pedal 2 angle steel bar 3 short section of wire rope 4 long section of wire rope 5 button switch 5.1 spiral wire

[0057] Figure 4 :1 Angle steel bar 2 Car handrail 3 Handle screw 4 Short section of wire rope 4.1 Long section of wire rope 5 Front pedal 6 Connecting strip 7 Rear pedal 8 Loading board 8.1 Large box rear plane 9 Universal wheel

[0058] Figure 5 : 1 buckle (buckle is fastened)

[0059] Figure 6:1 Angle iron seat (anti-bending angle steel bar) 2 Angle steel bar 3 Screw with handle 4 Front pedal 5 Short section of wire rope 5.1 Long section of wire rope

[0060] Figure 7 :1 top of the large cargo box 2 handrail frame 3 button switch 4 spiral wire 5.1, 5.2 steel ring above the pipe clamp 5.11, 5.21 upper flat rope to tighten the box belt 6 seat plate 7.1, 7.2 clamp 7.11, 7.21 lower flat rope to tighten the box belt and rear pedal sling 8 handrail steel pipe 9.1, 9.2 ratchet tensioner 10 loading board 11 rear pedal 12.1, 12.2 universal wheel

[0061] Figure 8 :1 front seat plate 1.1 reinforcement 2.1, 2.2 angle steel 60×60mm 3.1, 3.2, 3.3, 3.4 flat steel 160×30×5mm 4.1, 4.2, 4.3 flat steel 100×30×5mm 5 round steel pipe φ30×

[0062] 420×2~3mm 6.1,6.2 Left and right limit hexagon socket screws 7 Front small cargo box cover 8.1,8.2,

[0063] 8.3 Rubber pad

[0064] Fig. 9 :1 front pedal frame 2.1, 2.2, 2.3 square tube reinforcement 3 long axis (two ends with screws) 4.1 patterned anti-skid steel plate 4.2 front footboard strip 5.1, 5.2 eye screw

[0065] Fig.10 :1 Car body frame 2 Electrical box cover 3 Handrail frame 4 Button switch 4.1 Spiral wire 4.2 Spiral wire socket 5 Power switch 6 Power and voltage display 7 Up and down switch 8 Fast and slow speed adjustment knob 9 Control panel

[0066] Fig.11 :1 Rear pedal U-shaped frame 1.1,1.2,1.3 Horizontal frame 2.1 Right universal wheel 3.1,3.2

[0067] Left and right limit plates 4 long axis (two-head with screws) 4.1, 4.2 left and right long axis holes 5.1, 5.2 left and right buckles 6.1, 6.2 left and right strong torsion springs 7.1, 7.2 eye screws 8.1, 8.2 left and right connecting strips 9 patterned anti-skid steel plate

[0068] Fig.12 :1 rear pedal 2 cargo board 3 lifting ring 4 long shaft 5 buckle 6 strong torsion spring 7 lifting ring 8 connecting strip A small figure The principle diagram of the cargo board tilting down 3.3°

[0069] Fig.13 :1 armrest frame 1.1 button switch 2 right palm 3 left palm 4 front pedal

[0070] Fig.14 :①Pipe clamp②Hatch③Safety hook④Anti-drop small cargo hook⑤Wire rope ring⑥Clip

[0071] Fig.15 :Figure 1 Charger 2 Car lithium battery 2.1 Charging port 2.2 Lithium battery socket 3 Power and voltage display 4 Switch 5 Brushless motor controller 5.1 Up and down stairs switch 5.2 Fast and slow speed potentiometer 6 Brushless DC motor 7 Battery parallel wire

[0072] The picture below: 1 Charger 2 New lithium battery 2.1 Charging port 2.2 Lithium battery dedicated socket 3 DC48V→AC220V inverter 3.1 AC220V ordinary socket 4 DC48V small fan 7 Battery parallel wires.

Claims

1. The present invention proposes a fire-fighting stair climbing vehicle for transporting goods and carrying two people (for fire in a building that needs to be extinguished quickly and human resources are needed to save everyone), which includes a vehicle body, tracks, battery motor, cargo board, front handrail, three cargo boxes, and box tightening belts, and also includes an innovative front seat for firefighters, a front footboard (referred to as the front footboard), a rear footboard for the rear standing position (referred to as the rear footboard), and a rear handrail; its characteristics are: A large plastic cargo box and two identical small plastic cargo boxes are combined to create a front seat: the two small boxes are put down, the rear box is placed horizontally, the front box is placed vertically, and the large box is on the upper layer of the two small boxes (Figure 2: 5.1, 5.2, 5.3). The space in front of the large and small boxes constitutes the front seat space; a metal "cushion" with a triangular side is placed in this space, and the upper plane is the front seat board (Figure 2: 6); the round tube at the front and lower part of the seat board is used to protect the legs (Figure 2: 6.1; Figure 8: 5), and there are limit screws on the left and right sides of the cushion (Figure 8: 6.1, 6.2), the seat cushion material is stainless steel or aluminum alloy.

2. As claimed in claim 1, a cargo-carrying and two-person high-rise fire-fighting climbing vehicle (for fires in buildings that need to be extinguished quickly and manpower is required to save everyone), the structure of which includes a vehicle body, three cargo boxes, a front seat cushion, and a front pedal; the characteristics are: A square frame is made of square tubes, with three square tubes in the middle (Figure 9: 1, 2.1, 2.2, 2.3), a patterned anti-skid steel plate is welded on the upper plane, and a footboard that is higher than the flat plate is welded on the front (Figure 9: 4.2). The long axis is passed through the rear frame of the square frame longitudinally, and both ends are threaded (Figure 9: 3); there are two "angle steel bars" on the left and right sides of the car body (Figure 2: 1.4), and the two ends of the long axis are inserted into the lower holes of the left and right "angle steel bars" and tightened with self-locking nuts (Figure 2: 1.41); a φ4mm soft stainless steel wire rope is used on each side of the square frame to be bent into two long and short sections, and a steel rope ring is added (Figure 14: ⑤), and then the steel wire rope is clamped with a clamp (Figure 2: 1.63; Figure 14: ⑥); the steel rope ring is hung on the "pipe clamp" On the lower end screw (Figure 14: ①; Figure 2: 3.1, 3.10); the "pipe clamp" can slide on the handrail; the short rope is connected to the inner long axis gap of the "angle steel bar" (Figure 2: 1.41), and the long rope is connected to the front eye screw of the frame plate (Figure 2: 1.53); the long and short sections of the wire rope on the left and right sides are the same length, and the connection method is the same; the installation position of the front pedal is: before the car starts to go upstairs, it is level with the nearest stair step ±10mm (Figure 2: 1.51, 1.5); when the front pedal is not in use, it can be flipped backwards and upwards, and the handle of the screw that fixes the handrail can be used to clamp it so that it does not fall back (Figure 4: 1, 3, 6); if the front pedal is not in use temporarily, it can be easily flipped upwards (Figure 3: 1).

3. As described in claim 1, a cargo and two-person fire-fighting climbing vehicle for high and low buildings (fire in a building is about to be extinguished, manpower is striving to save everyone), the structure of which also includes a "rear pedal"; its characteristics are: This board is installed under the cargo board, and the two are of the same width. The front part of the "rear pedal" is extended to allow people to stand. There are three horizontal square tubes in the middle, and the upper surface is welded with anti-skid steel plates (Figure 11: 1, 1.1, 1.2, 1.3, 9); there are 10.1mm holes at both ends of the square frame at the rear of the plate (Figure 11: 4.1, 4.2), and there are two rotatable "connecting strips" on the left and right in front of the rotating shaft of the loading plate (Figure 4: 6; Figure 11: 8.1, 8.2), with a 10.1mm hole at the lower end; a long axis is used to penetrate the lower holes of the two "connecting strips" and the two holes at the rear pedal frame, and the nut is tightened to the two threads of the long axis (Figure 11: 4, 4.1, 4.2, 8.1, 8.2); the universal wheel is installed under the rear pedal at the bottom of the front of the loading plate (Figure 4: 9); the rear pedal is positioned with two left and right flat cables when standing; when going upstairs, the rear pedal is tilted forward 5°-8° (Figure 1: rear pedal); the flat cable is tied to the anti-slip small cargo hook (Figure 2: 8.21; Figure 14: ④).

4. As claimed in claim 3, a cargo and two-person fire-fighting climbing vehicle for high and low buildings (fire in a building is about to be extinguished, manpower is striving to save everyone), the structure of which includes a rear pedal; its characteristics are: A long shaft passes through the connection between the rear pedal and the loading board, and strong torsion springs are installed at both ends of the long shaft (Figure 11: 4, 6.1, 6.2; Figure 12: 4, 6). The two ends of the torsion spring are attached to the loading board and the rear horizontal frame of the rear pedal (Figure 12: 6, 1.1, 2.1); when the firefighter walks down the rear pedal, two strong torsion springs will bring the two plates together (Figure 2: 4, 4.1); if the rear pedal needs to be fixed under the loading board, the firefighter should press the rear pedal against the loading board and buckle the "strips" on the two sets of "buckles" (Figure 5: 1; Figure 14: ②).

5. As described in claim 1 or 3, a cargo-carrying and two-person fire-fighting climbing vehicle for high and low buildings (fire in a building is about to be extinguished, and manpower is striving to save everyone), the structure of which includes large and small cargo boxes, and also includes box tightening belts; its characteristics are: In addition to tying up the cargo box, this belt also provides a rear handrail for the rear firefighter: three φ30×550×2~3mm stainless steel pipes (Figure 2: 7.2; Figure 7: 8); the left and right flat ropes are wrapped around the two ends of the steel pipe, each fixed with a through screw and a nut, and the wrapped part is clamped with a chuck (Figure 14: ⑥); the two flat belts under the chuck are separated and tightened, and the cargo box can still be tied up; the chuck uses the steel pipe to leave 20~25mm of space, which is convenient for the fingers to hold the steel pipe; the three steel pipes are 15cm apart, and the first one is 10~20cm away from the front of the large box, allowing the firefighter to choose the handrail in the best position; the steel pipe can also be connected to the rear firefighter's safety belt (Figure 1).

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