A special fire truck for high-altitude rescue

Abstract

The present invention relates to a special fire truck for high-altitude rescue, which includes a vehicle frame body, a lifting platform arranged above the vehicle frame body, a middle ladder structure and a middle ladder lifting mechanism arranged above the lifting platform, a lower ladder structure connected to the lower end of the middle ladder structure, and further includes an upper ladder structure connected to the upper end of the middle ladder structure. A top platform is arranged at the upper end of the upper ladder structure; a slewing platform is arranged between the middle ladder structure and the upper ladder structure, and the slewing platform can drive the upper ladder structure to rotate 360°. The present invention has the advantages of small volume, light weight and cost saving; at the same time, it can drive the upper ladder structure to rotate, realize the 360-degree rotation of the upper ladder structure, has less requirements for space, and has the technical effect of meeting multi-directional rescue and fire extinguishing in narrow spaces.

Description

Technical Field

[0001] The present invention relates to the technical field of fire trucks, and particularly to a special fire truck for high-altitude rescue. Technical Background

[0002] With the continuous development of China's economy and the increasing population year by year, in order to improve land utilization rate, more and more high-rise buildings have been built. While high-rise buildings increase land utilization rate, they also bring many potential safety hazards, such as fires. Once a fire accident occurs, it is difficult to extinguish fires and conduct rescues in high-rise buildings, and ordinary fire trucks are difficult to achieve rescue effects. A special high-altitude fire rescue truck is a fire truck specifically designed for high-altitude rescue, which can meet the needs of high-altitude fire extinguishing and rescue, and reduce property losses and casualties.

[0003] In the prior art, the invention patent with the application number CN110237466A discloses a special high-altitude fire rescue truck, including a chassis, a slewing platform, a lifting platform, an upper ladder structure, a lower ladder structure and a top platform. A sub-frame is installed on the chassis; the slewing platform is placed on the sub-frame, and the two rely on a slewing mechanism to realize left and right rotation; the lifting platform is lifted through a platform lifting hydraulic cylinder and a lifting platform scissor frame on the slewing platform. The bottom end of the upper ladder lifting oil cylinder is fixed on the lifting platform, and the upper ladder telescopic ladder and the upper ladder rotating ladder are foldably connected or linearly connected; the lower ladder structure is placed inside the lifting platform or extends out of the lifting platform, and the lower ladder rotating ladder and the lower ladder telescopic ladder are foldably connected or linearly connected; the top platform is placed at the front end of the upper ladder telescopic ladder and is provided with a fire cannon. The above invention has the following advantages: the ladder frame can rotate 140° left and right, with high adaptability to the on-site environment; the number of people evacuated per unit time is large and the load-bearing capacity is strong; the overall vehicle integration is high; the degree of automation and safety is high.

[0004] The following disadvantages exist in the above prior art: the slewing platform is arranged on the chassis and needs to bear the weight of the upper ladder structure and the lower ladder structure, so it has a relatively large volume and heavy weight. On the other hand, when the slewing platform rotates, the upper ladder structure and the lower ladder structure rotate simultaneously, requiring a large space, unable to perform multi-angle azimuth adjustment in real time, and unable to meet the multi-directional fire extinguishing and rescue in narrow spaces. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a special fire truck for high-altitude rescue, which raises the slewing platform to the bottom of the upper ladder structure, having the advantages of small volume, light weight and cost saving; at the same time, it can drive the upper ladder structure to rotate, realizing 360-degree rotation of the upper ladder structure, requiring less space, and having the technical effect of meeting multi-directional rescue and fire extinguishing in narrow spaces.

[0006] The above invention purpose of the present invention is achieved through the following technical solutions:

[0007] A special fire truck for high-altitude rescue, including a frame body, a lifting platform arranged above the frame body, a middle ladder structure and a middle ladder lifting mechanism arranged above the lifting platform, a lower ladder structure connected to the lower end of the middle ladder structure, and an upper ladder structure connected to the upper end of the middle ladder structure. A top platform is arranged at the upper end of the upper ladder structure; a slewing platform is arranged between the middle ladder structure and the upper ladder structure, and the slewing platform can drive the upper ladder structure to rotate 360°.

[0008] By adopting the above technical solution, the original two-section ladder structure is changed into a three-section ladder structure, which not only increases the height of the ladder, but more importantly, the slewing platform is arranged between the upper ladder structure and the middle ladder structure, reducing the volume of the slewing platform, lowering the weight, and playing a role in cost savings.

[0009] The slewing platform drives the upper ladder structure to rotate, without the obstruction of the frame body, and can realize the 360° rotation of the upper ladder structure, and has low requirements for the space size, having the technical effect of meeting multi-directional rescue and fire extinguishing in a narrow space.

[0010] Furthermore, the lower ladder structure includes a first lower ladder and a second lower ladder slidably connected to the first lower ladder; two support legs are rotatably connected to the lower end of the first lower ladder. During use, the support legs can rotate to a state perpendicular to the ground, and the support legs land on the ground to support the first lower ladder, and the support legs can rotate to both sides of the first lower ladder and be parallel to the first lower ladder.

[0011] By adopting the above technical solution, the lower ladder structure is set in two sections, and the support legs can be folded, all in order to reduce the volume of the fire truck in the standby state and facilitate the travel of the fire truck.

[0012] Furthermore, high armrests are arranged on both sides of the first lower ladder. The high armrests are rotatably connected to the first lower ladder. A first air cylinder is arranged between the high armrests and the first lower ladder. The cylinder body of the first air cylinder is rotatably connected to the first lower ladder, and the telescopic rod of the first air cylinder is rotatably connected to the high armrest; when the telescopic rod of the first air cylinder extends, the height of the high armrest increases; the same high armrests are arranged on the second lower ladder.

[0013] By adopting the above technical solution, the high armrests can increase the safety of firefighters when climbing the ladder, and the high armrests are set in a foldable form, which can also reduce the volume of the fire truck in the standby state.

[0014] Furthermore, the middle ladder structure includes a first middle ladder and a second middle ladder. The second middle ladder is slidably connected to the first middle ladder and can overlap with it. The lower end of the second middle ladder is rotatably connected to the upper end of the first lower ladder. A second cylinder is provided between the second middle ladder and the lifting platform to support the second middle ladder. The cylinder body of the second cylinder is rotatably connected to the lifting platform, and the telescopic rod of the second cylinder is rotatably connected to the second middle ladder.

[0015] By adopting the above technical solution, the middle ladder structure is set to two sections, which can reduce the volume of the fire truck in the standby state. The second cylinder cooperates with the middle ladder lifting mechanism to change the height of the middle ladder structure, and the operation is convenient.

[0016] Furthermore, heightening handrails are also provided on the first middle ladder and the second middle ladder, and they have the same structure as the heightening handrails on the first lower ladder.

[0017] Furthermore, the slewing platform includes a lower support plate, a slewing drive assembly, and an upper support plate. The slewing drive assembly is arranged between the upper support plate and the lower support plate. The slewing drive assembly includes a drive motor, a slewing gear, and a slewing ring gear, and can drive the upper support plate to rotate. The upper ladder structure is connected to the upper support plate. The lower support plate is rotatably connected to the upper end of the first middle ladder, and the lower surface of the lower support plate is connected to the middle ladder lifting mechanism.

[0018] By adopting the above technical solution, the motor drives the slewing gear and the slewing ring gear to rotate, thereby realizing the rotation of the upper support platform in the middle driving the upper ladder structure. It has a small volume, low energy consumption, convenient operation and energy saving, and can achieve 360° rotation in a small space, which is convenient for rescue.

[0019] Furthermore, the lower end of the upper ladder structure is rotatably connected to the upper support plate. A third cylinder is provided between the upper ladder structure and the upper support plate. The cylinder body of the third cylinder is rotatably connected to the upper support plate, and the telescopic rod of the third cylinder is rotatably connected to the upper ladder structure. When the telescopic rod of the third cylinder extends, the horizontal angle of the upper ladder structure decreases, and the height of the top platform decreases. When the telescopic rod of the third cylinder shortens, the horizontal angle of the upper ladder structure increases, and the height of the top platform increases.

[0020] By adopting the above technical solution, the third cylinder can control the angle between the upper ladder structure and the horizontal plane, and change the height of the fire truck. For the adjustment of the height in a small range, it can be achieved by the telescopic movement of the third cylinder without starting the middle ladder lifting mechanism, reducing energy consumption.

[0021] Furthermore, rollers are provided at the lower end of the second lower ladder.

[0022] By adopting the above technical solution, the roller can reduce the friction between the second lower ladder and the ground, facilitating the movement and adjustment of the lower ladder structure.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects:

[0024] 1. Changing the original two-section ladder structure into a three-section ladder structure not only increases the height of the ladder, but more importantly, the slewing platform is arranged between the upper ladder structure and the middle ladder structure, reducing the volume of the slewing platform, lowering the weight, and playing a role in cost savings; the slewing platform drives the upper ladder structure to rotate, without the obstruction of the vehicle frame body, enabling 360° rotation of the upper ladder structure, and having low requirements for the space size, with the technical effect of meeting multi-directional rescue and fire extinguishing in narrow spaces;

[0025] 2. The third cylinder can control the angle between the upper ladder structure and the horizontal plane, changing the height of the fire truck. For the adjustment of a small range of heights, it can be achieved by the telescoping of the third cylinder, without starting the middle ladder lifting mechanism, reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the embodiment;

[0027] Figure 2 is Figure 1 an enlarged schematic diagram of the structure of part A in

[0028] Figure 3 is a schematic diagram of the back structure of the lower ladder structure;

[0029] Figure 4 is Figure 1 an enlarged schematic diagram of the structure of part B in

[0030] Figure 5 is a schematic diagram of the structure of the slewing drive assembly;

[0031] Figure 6 is Figure 1 an enlarged schematic diagram of the structure of part C in

[0032] In the figure, 1 is the frame body; 2 is the lifting platform; 21 is the slideway; 22 is the lower ladder driver; 221 is the sliding seat; 222 is the first motor; 223 is the first gear; 224 is the first rack; 3 is the lower ladder structure; 31 is the first lower ladder; 311 is the raised handrail; 312 is the first cylinder; 32 is the second lower ladder; 321 is the roller; 331 is the second rack; 332 is the second motor; 333 is the second gear; 34 is the support leg; 4 is the middle ladder structure; 41 is the first middle ladder; 42 is the second middle ladder; 43 is the second cylinder; 5 is the middle ladder lifting structure; 6 is the slewing platform; 61 is the lower support plate; 62 is the slewing drive assembly; 621 is the drive motor; 622 is the slewing gear; 623 is the slewing ring gear; 63 is the upper support plate; 7 is the upper ladder structure; 71 is the third cylinder; 8 is the top platform. Detailed implementation mode

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Refer to Figure 1 , a special high-altitude rescue fire truck disclosed by the present invention, includes a frame body 1, a lifting platform 2, a lower ladder structure 3, a middle ladder structure 4, a middle ladder lifting structure 5, a slewing platform 6, an upper ladder structure 7 and a top platform 8. In order to facilitate the fire truck to travel on the road, the frame of the fire truck is all adopted in a foldable manner. The lifting platform 2 is arranged on the frame body 1, and the lifting platform 2 can be lifted. When using this fire truck, the lifting platform 2 is raised to raise the overall height of the upper ladder structure 7, the middle ladder structure 4 and the lower ladder structure 3; when not in use, the lifting platform 2 is lowered to the lowest position to facilitate driving.

[0035] Refer to Figure 1 , directly above the lifting platform 2 is the middle ladder structure 4, and the height adjustment of the middle ladder structure 4 is realized through the middle ladder lifting structure 5. The upper end of the middle ladder structure 4 is connected to the slewing platform 6, and the other end of the slewing platform 6 is connected to the upper ladder structure 7 to realize the 360° rotation of the upper ladder structure 7, with flexible angle adjustment and convenient operation.

[0036] Refer to Figure 1 , the lower end of the middle ladder structure 4 is connected to the lower ladder structure 3. When in use, the middle ladder structure 4 and the lower ladder structure 3 are in a straight line, the lower ladder structure 3 contacts the ground, and the firefighters ascend in the order of the lower ladder structure 3, the middle ladder structure 4 and the upper ladder structure 7.

[0037] Refer to Figure 1 and Figure 2, above the lifting platform 2, a horizontal slideway 21 adapted to the model of the lower ladder structure 3 is provided along its length direction. Inside the slideway 21, there is a lower ladder driver 22. The lower ladder driver 22 includes a slide block 221, a first motor 222 fixedly connected to the slide block 221, and a first gear 223 fixedly connected to the first motor 222. There is a first rack 224 fixed on the slideway 21 and meshing with the first gear 223. The lower ladder structure 3 is rotatably connected to the slide block 221. The lifting of the lifting platform 2 will change the angle between the lower ladder structure 3 and the slideway 21. When the lifting platform 2 drops to the lowest point, the lower ladder structure 3 is close to being flush with the slideway 21. Rotate the lower ladder structure 3 to be flush with the direction of the slideway 21. Start the first motor 222 to drive the first gear 223 to rotate, and then drive the slide block 221 to move along the direction of the first rack 224, and at the same time bring the lower ladder structure 3 into or out of the slideway 21.

[0038] Refer to Figure 1 and Figure 3 , the lower ladder structure 3 includes a first lower ladder 31 and a second lower ladder 32 slidably connected to the first lower ladder 31. The upper end of the first lower ladder 31 is rotatably connected to the slide block 221. The lower ladder structure 3 further includes a lower ladder driving assembly for driving the second lower ladder 32 to slide. At the middle position below the second lower ladder 32, a second rack 331 is fixedly connected along its length direction. The lower end of the first lower ladder 31 is fixedly connected with a second motor 332. A second gear 333 meshing with the second rack 331 is coaxially fixedly connected to the motor shaft of the second motor 332. When using the fire truck, the first motor 222 drives the lower ladder structure 3 to slide out of the slideway 21, and then start the second motor 332. The second lower ladder 32 slides to be in the longest straight line with the first lower ladder 31. After use, the second motor 332 drives the second lower ladder 32 to rise and overlap with the first lower ladder 31. Then the lifting platform 2 descends, and the lower ladder structure 3 gradually becomes parallel to the slideway 21. Then it enters the slideway 21 under the drive of the first motor 222, saving space and reducing the volume of the fire truck.

[0039] Refer to Figure 1 , in order to increase the stability of the lower ladder structure 3, two support legs 34 are rotatably connected to the lower end of the first lower ladder 31. During use, the support legs 34 can rotate to a state perpendicular to the ground, and the support legs 34 touch the ground to support the first lower ladder 31. In the standby state, the support legs 34 can rotate to both sides of the first lower ladder 31 and be parallel to the first lower ladder 31.

[0040] Refer to Figure 1 and Figure 4, in order to increase the safety of firefighters when climbing the ladder, both sides of the first lower ladder 31 are provided with raised handrails 311. The raised handrails 311 are rotatably connected to the first lower ladder 31. A first air cylinder 312 is provided between the raised handrails 311 and the first lower ladder 31. The cylinder body of the first air cylinder 312 is rotatably connected to the first lower ladder 31, and the telescopic rod of the first air cylinder 312 is rotatably connected to the raised handrail 311; when the telescopic rod of the first air cylinder 312 extends, the height of the raised handrail 311 increases; the second lower ladder 32 is provided with the same raised handrails 311.

[0041] Refer to Figure 1 , at the lower end of the second lower ladder 32, there are rollers 321 to reduce the friction between the second lower ladder 32 and the ground and facilitate the movement of the lower ladder structure 3.

[0042] Refer to Figure 1 , when the lower ladder structure 3 is lifted upward and is directly opposite the lifting platform 2 above, there is a middle ladder structure 4. The middle ladder structure 4 is the load-bearing section in the ladder frame. The middle ladder structure 4 includes a first middle ladder 41 and a second middle ladder 42. The second middle ladder 42 is slidably connected to the first middle ladder 41 and can overlap. The upper end of the first middle ladder 41 is rotatably connected to the middle ladder lifting mechanism 5, and the lower end of the second middle ladder 42 is rotatably connected to one end of the lifting platform 2 close to the first lower ladder 31. The middle ladder lifting mechanism 5 can control the lifting and lowering of the middle ladder structure 4, but only when controlled by the middle ladder lifting mechanism 5, the sliding resistance between the second middle ladder 42 and the first middle ladder 41 will increase. Therefore, a second air cylinder 43 is provided between the second middle ladder 42 and the lifting platform 2. The cylinder body of the second air cylinder 43 is rotatably connected to the lifting platform 2, and the telescopic rod of the second air cylinder 43 is rotatably connected to the upper end of the second middle ladder 42. The second air cylinder 43 cooperates with the middle ladder lifting mechanism 5 to make the sliding and lifting of the middle ladder structure 4 smoother.

[0043] Refer to Figure 1 , the first middle ladder 41 and the second middle ladder 42 are also provided with raised handrails 311, and the structure is the same as that of the raised handrails 311 on the first lower ladder 31.

[0044] Refer to Figure 1 and Figure 5 , the upper end of the first middle ladder 41 is connected to the slewing platform 6. The slewing platform 6 includes a lower support plate 61, a slewing drive assembly 62, and an upper support plate 63. The lower support plate 61 is rotatably connected to the first middle ladder 41, and the bottom of the lower support plate 61 is connected to the middle ladder lifting mechanism 5; the side of the upper support plate 63 away from the first middle ladder 41 is rotatably connected to the upper ladder structure 7.

[0045] Refer to Figure 1 and Figure 5, a slewing drive assembly 62 is disposed between the lower support plate 61 and the upper support plate 63. The slewing drive assembly 62 includes a drive motor 621, a slewing gear 622, and a slewing ring gear 623. The upper surface of the slewing gear 622 is fixedly connected to the upper support plate 63, and the lower surface of the slewing ring gear 623 is fixedly connected to the lower support plate 61. The drive motor 621 drives the slewing gear 622 to rotate, thereby driving the upper support plate 63 and the upper ladder structure 7 to rotate.

[0046] Referring to Figure 1 and Figure 6 , a third cylinder 71 is provided between the upper ladder structure 7 and the upper support plate 63. The cylinder block of the third cylinder 71 is rotatably connected to the upper support plate 63, and the telescopic rod of the third cylinder 71 is rotatably connected to the upper ladder structure 7; when the telescopic rod of the third cylinder 71 extends, the horizontal angle of the upper ladder structure 7 decreases, and the height of the top platform 8 decreases; when the telescopic rod of the third cylinder 71 shortens, the horizontal angle of the upper ladder structure 7 increases, and the height of the top platform 8 increases.

[0047] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A special fire truck for high-altitude rescue, comprising a vehicle frame body (1), a lifting platform (2) arranged above the vehicle frame body (1), a middle ladder structure (4) and a middle ladder lifting mechanism (5) arranged above the lifting platform (2), and a lower ladder structure (3) connected to the lower end of the middle ladder structure (4). Characterized in that: It further includes an upper ladder structure (7) connected to the upper end of the middle ladder structure (4), and a top platform (8) is arranged at the upper end of the upper ladder structure (7); a slewing platform (6) is arranged between the middle ladder structure (4) and the upper ladder structure (7), and the slewing platform (6) can drive the upper ladder structure (7) to rotate 360°. The middle ladder structure (4) is directly opposite the lifting platform (2) above. During use, the middle ladder structure (4) and the lower ladder structure (3) are in a straight line. The middle ladder structure (4) includes a first middle ladder (41) and a second middle ladder (42). A second cylinder (43) is arranged between the second middle ladder (42) and the lifting platform (2) to support the second middle ladder (42). The slewing platform (6) includes a lower support plate (61), a slewing drive assembly (62) and an upper support plate (63). A third cylinder (71) is arranged between the upper ladder structure (7) and the upper support plate (63). The cylinder body of the third cylinder (71) is rotatably connected to the upper support plate (63), and the telescopic rod of the third cylinder (71) is rotatably connected to the upper ladder structure (7); when the telescopic rod of the third cylinder (71) extends, the horizontal angle of the upper ladder structure (7) decreases, and the height of the top platform (8) decreases; when the telescopic rod of the third cylinder (71) shortens, the horizontal angle of the upper ladder structure (7) increases, and the height of the top platform (8) increases.

2. A special fire truck for high-altitude rescue according to claim 1, Characterized in that: The lower ladder structure (3) includes a first lower ladder (31) and a second lower ladder (32) slidably connected to the first lower ladder (31); two support legs (34) are rotatably connected to the lower end of the first lower ladder (31). During use, the support legs (34) can rotate to a state perpendicular to the ground, and the support legs (34) touch the ground to support the first lower ladder (31), and the support legs (34) can rotate to both sides of the first lower ladder (31) and be parallel to the first lower ladder (31).

3. A special fire truck for high-altitude rescue according to claim 2, Characterized in that: Reinforcing handrails (311) are arranged on both sides of the first lower ladder (31), and the reinforcing handrails (311) are rotatably connected to the first lower ladder (31). A first cylinder (312) is arranged between the reinforcing handrails (311) and the first lower ladder (31). The cylinder body of the first cylinder (312) is rotatably connected to the first lower ladder (31), and the telescopic rod of the first cylinder (312) is rotatably connected to the reinforcing handrails (311); when the telescopic rod of the first cylinder (312) extends, the height of the reinforcing handrails (311) increases; the same reinforcing handrails (311) are arranged on the second lower ladder (32).

4. The special high-altitude rescue fire truck according to claim 3, characterized in that: the second middle ladder (42) is slidably connected to and can overlap with the first middle ladder (41), and the lower end of the second middle ladder (42) is rotatably connected to the upper end of the first lower ladder (31); the cylinder block of the second cylinder (43) is rotatably connected to the lifting platform (2), and the telescopic rod of the second cylinder (43) is rotatably connected to the second middle ladder (42).

5. The special high-altitude rescue fire truck according to claim 4, characterized in that: the first middle ladder (41) and the second middle ladder (42) are also provided with heightening handrails (311), and the structure is the same as that of the heightening handrail (311) on the first lower ladder (31).

6. The special high-altitude rescue fire truck according to claim 4, characterized in that: the slewing drive assembly (62) is arranged between the upper support plate (63) and the lower support plate (61), the slewing drive assembly (62) includes a drive motor (621), a slewing gear (622) and a slewing ring gear (623), and can drive the upper support plate (63) to rotate, and the upper ladder structure (7) is connected to the upper support plate (63); the lower support plate (61) is rotatably connected to the upper end of the first middle ladder (41), and the lower surface of the lower support plate (61) is connected to the middle ladder lifting mechanism (5).

7. The special high-altitude rescue fire truck according to claim 6, characterized in that: the lower end of the upper ladder structure (7) is rotatably connected to the upper support plate (63).

8. The special high-altitude rescue fire truck according to claim 2, characterized in that: rollers (321) are provided at the lower end of the second lower ladder (32).

Images