Flood control vehicle

Abstract

The application discloses a drainage emergency vehicle and relates to the technical field of drainage emergency, which comprises a chassis and a drainage assembly arranged on the chassis. The drainage assembly comprises a rotary mechanism, a connecting rod mechanism, a first drainage assembly, a hose and a second drainage assembly. When a first telescopic cylinder is started, the connecting line of the first hinged point, the second hinged point, the third hinged point and the fourth hinged point forms a quadrilateral. The first drainage assembly comprises a first fixed support, a first telescopic support, a third telescopic cylinder and a first drainage pipe fixed to the first telescopic support. The second drainage assembly comprises a second fixed support, a second telescopic support, a fourth telescopic cylinder and a second drainage pipe fixed to the second telescopic support. The fifth telescopic cylinder drives the seventh hinged point to swing with the first telescopic support as a fulcrum. The technical effect is that the inner diameter of the hose is close to or equal to the inner diameter of the first drainage pipe and the second drainage pipe, the inner diameter loss is small, the hose is not prone to corrosion and dirt accumulation, the hose is easy to seal and the cost is low.

Description

Technical Field

[0001] This invention relates to the field of flood control and disaster relief technology, and in particular to a flood control and disaster relief vehicle. Background Technology

[0002] Flood drainage and rescue vehicles are emergency vehicles and play an irreplaceable role in flood control and disaster relief. Currently, the drainage pipes of flood drainage and rescue vehicles have a telescopic structure. The telescopic structure brings a series of defects, such as poor sealing, easy accumulation of dirt, and multiple changes in the inner diameter of the drainage pipe, resulting in significant loss of the inner diameter of the drainage. At the same time, telescopic drainage pipes are difficult to process, heavy, have high manufacturing costs, and high subsequent maintenance costs.

[0003] Therefore, there is an urgent need to develop a new type of flood drainage and emergency rescue vehicle to overcome the above-mentioned shortcomings. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the purpose of this invention is to disclose a flood drainage and emergency rescue vehicle that maximizes the operating range of the vehicle through a slewing mechanism, a linkage mechanism, a first drainage component, a hose, and a second drainage component.

[0005] To achieve the above-mentioned objectives, the present invention provides a flood drainage and emergency rescue vehicle, including a chassis and a drainage assembly disposed on the chassis;

[0006] The drainage assembly includes a rotary mechanism, a linkage mechanism, a first drainage assembly, a hose, and a second drainage assembly;

[0007] The linkage mechanism includes a first fixed member, a first connecting rod, a second connecting rod, a first swing arm, a first telescopic cylinder, and a second telescopic cylinder, all disposed on the rotary mechanism. The first fixed member has a first hinge point and a second hinge point at its two ends, respectively. The first end of the first connecting rod is hinged to the first hinge point, and the first end of the first swing arm is hinged to the second hinge point. The first telescopic cylinder uses the first swing arm as a fulcrum. The telescopic rod of the first telescopic cylinder, the second end of the first connecting rod, and the first end of the second connecting rod are hinged to form a third hinge point. The second end of the second connecting rod is hinged below the first swing arm to form a fourth hinge point. When the first telescopic cylinder is activated, the line connecting the first hinge point, the second hinge point, the third hinge point, and the fourth hinge point forms a quadrilateral.

[0008] The first drainage assembly includes a first fixed bracket, a first telescopic bracket, a third telescopic cylinder, and a first drain pipe fixed to the first telescopic bracket. The second telescopic cylinder drives the first fixed bracket to swing with the first swing arm as the fulcrum, and the third telescopic cylinder drives the first telescopic bracket to extend and retract with the first fixed bracket as the fulcrum.

[0009] The second drainage assembly includes a second fixed bracket, a second telescopic bracket, a fourth telescopic cylinder, and a second drain pipe fixed to the second telescopic bracket. The fourth telescopic cylinder drives the second telescopic bracket to extend and retract with the second fixed bracket as a fulcrum.

[0010] The first telescopic bracket and the second fixed bracket are hinged together. A fifth hinge point and a third connecting rod are provided at the end of the first telescopic bracket, and a sixth hinge point and a fourth connecting rod are provided at the end of the second fixed bracket. The first end of the third connecting rod is hinged to the fifth hinge point, the first end of the fourth connecting rod is hinged to the sixth hinge point, and the second ends of the third connecting rod and the second ends of the fourth connecting rod are hinged together to form a seventh hinge point. The fifth telescopic cylinder drives the seventh hinge point to swing with the first telescopic bracket as the fulcrum.

[0011] Preferably, the inner diameters of the first drain pipe and the second drain pipe are both R, and the inner diameter of the flexible hose is r, where R:r = 1:(1~1.05).

[0012] Preferably, the hose and the first drain pipe are connected by a first clamp, and the hose and the second drain pipe are connected by a second clamp.

[0013] Preferably, when the linkage mechanism, the first drainage assembly, the hose and the second drainage assembly are in the initial state, the included angle between the first drainage assembly and the second drainage assembly is 90°.

[0014] Preferably, the step of changing the included angle between the first drain pipe and the second drain pipe from 90° to 0° is as follows:

[0015] The fifth telescopic cylinder drives the second drainage assembly to swing 90° to the rear of the vehicle;

[0016] The fourth telescopic cylinder drives the second drain pipe to slide and straighten the hose.

[0017] Preferably, the step of changing the included angle between the first drain pipe and the second drain pipe from 0° to 90° is as follows:

[0018] The fourth telescopic cylinder drives the second drain pipe to slide and retract the hose;

[0019] The fifth telescopic cylinder drives the second drainage assembly to swing 90° forward of the vehicle.

[0020] Preferably, the first drain pipe is provided with a plurality of drain outlets.

[0021] Preferably, the swing angle of the rotary mechanism is 360°.

[0022] Preferably, support legs are provided on both sides of the rear of the chassis.

[0023] Preferably, a clearance space for holding the linkage mechanism is provided above the chassis.

[0024] Compared with the prior art, the technical effects of the present invention are as follows:

[0025] (1) Overcoming the prejudice of traditional flood control and disaster relief vehicles using telescopic drainage pipes, the first and second drainage pipes are connected by a flexible hose, which has the following advantages: the flexible hose is easy to bend and store the second drainage pipe, reducing the space occupied; the manufacturing cost and technical requirements of the flexible hose are significantly lower than those of telescopic drainage pipes, and the flexible hose is not easy to corrode, does not easily accumulate dirt, and is easy to seal, which greatly reduces the overall vehicle manufacturing cost and the subsequent maintenance cost; the inner diameter of the flexible hose is close to or equal to the inner diameter of the first and second drainage pipes, while the inner diameter of the traditional telescopic drainage pipe changes greatly due to the pipe wall, resulting in a large inner diameter loss during drainage. The flexible hose of this application can solve the industry problem of inner diameter loss at low cost.

[0026] (2) Through the combined action of the rotary mechanism, the linkage mechanism, the first drainage assembly, the hose, the second drainage assembly and the fifth telescopic cylinder, the following functions can be achieved: the fifth telescopic cylinder drives the second drainage pipe to swing 90° relative to the first drainage pipe; when the angle between the first drainage pipe and the second drainage pipe is 0°, the rotary mechanism, the linkage mechanism, the third telescopic cylinder and the fourth telescopic cylinder can drive the second drainage pipe to penetrate into the water at a distance with a lateral tilt; when the angle between the first drainage pipe and the second drainage pipe is 0°, the rotary mechanism, the linkage mechanism, the third telescopic cylinder and the fourth telescopic cylinder can drive the second drainage pipe to penetrate into the water in a vertical manner.

[0027] (3) Traditional flood control and emergency rescue vehicles use telescopic drainage pipes. The telescopic drainage pipes extend the drainage pipeline by telescopic extension. They have multiple extensions and a long stroke. In contrast, the present invention uses a flexible hose to replace the telescopic drainage pipe. The flexible hose is bent at 90° to increase the overall length of the drainage pipeline. The structure is simpler, the cost is lower, it is not easy to corrode, it is not easy to accumulate dirt, and it is easy to seal. In the initial state, the second drainage component is close to the rear end of the vehicle. The bottom of the second drainage component is higher than the bottom of the chassis to prevent the second drainage component from being hit during vehicle operation. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural diagram of the vehicle of the present invention in its initial state.

[0030] Figure 2 This is a three-dimensional structural diagram of the vehicle of the present invention in the furthest water-absorbing state at the side.

[0031] Figure 3 This is a three-dimensional structural diagram of the vehicle of the present invention in the state of deepest water absorption from the side.

[0032] Figure 4 This is a three-dimensional structural diagram of the vehicle of the present invention in the state of deepest water absorption at the rear.

[0033] Figure 5 This is a three-dimensional structural diagram of the vehicle in the furthest rear water-absorbing state of the present invention.

[0034] Figure 6 This is the present invention. Figure 5 Enlarged structural diagram of Part A.

[0035] Among them, 1. Chassis; 11. Outrigger; 12. Clearance position; 2. Rotation mechanism; 21. First fixed component; 211. First hinge point; 212. Second hinge point; 213. Third hinge point; 214. Fourth hinge point; 22. First connecting rod; 221. First end of the first connecting rod; 222. Second end of the first connecting rod; 23. Second connecting rod; 231. First end of the second connecting rod; 232. Second end of the second connecting rod; 3. Linkage mechanism; 31. First swing arm; 311. First end of the first swing arm; 312. Second end of the first swing arm; 32. First telescopic cylinder; 321. Telescopic rod of the first telescopic cylinder; 33. Second telescopic cylinder; 4. First Drainage assembly; 41. First fixed bracket; 42. First telescopic bracket; 421. Fifth hinge point; 43. Third telescopic cylinder; 44. First drain pipe; 441. Drain outlet; 45. Third connecting rod; 451. First end of the third connecting rod; 452. Second end of the third connecting rod; 5. Hose; 51. First clamp; 52. Second clamp; 6. Second drainage assembly; 61. Second fixed bracket; 611. Sixth hinge point; 612. Seventh hinge point; 62. Second telescopic bracket; 63. Fourth telescopic cylinder; 64. Second drain pipe; 65. Fourth connecting rod; 651. First end of the fourth connecting rod; 652. Second end of the fourth connecting rod; 7. Fifth telescopic cylinder. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are the orientation or positional relationships based on the accompanying drawings. They are only used to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the claimed device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they shall not be construed as limitations on the present invention.

[0038] Example 1

[0039] Reference Figures 1 to 6 As shown, this embodiment discloses a specific embodiment of a drainage and emergency rescue vehicle (hereinafter referred to as "the vehicle").

[0040] For the drainage and emergency rescue vehicle, see Figures 1 to 6The vehicle includes a chassis 1 and a drainage assembly mounted on the chassis 1. Support legs 11 are respectively mounted on both sides of the rear of the chassis 1. The purpose of the support legs 11 is to maintain the vehicle's balance during water pumping. The two support legs 11 form an H-shaped support, making the vehicle stable. The drainage assembly includes a slewing mechanism 2, a linkage mechanism 3, a first drainage component 4, a hose 5, and a second drainage component 6. A clearance position 12 for holding the linkage mechanism 3 is provided above the chassis 1. When the slewing mechanism 2 and the linkage mechanism 3 are in the retracted state, the linkage mechanism 3 retracts to the clearance position 12, making the vehicle compact. The linkage mechanism 3 includes a support leg 11 mounted on the chassis 1. The rotary mechanism 2 comprises a first fixed member 21, a first connecting rod 22, a second connecting rod 23, a first swing arm 31, a first telescopic cylinder 32, and a second telescopic cylinder 33. The first fixed member 21 has a first hinge point 211 and a second hinge point 212 at its two ends. The first end 221 of the first connecting rod is hinged to the first hinge point 211. The first end 311 of the first swing arm is hinged to the second hinge point 212. The second end 312 of the first swing arm is hinged to the first fixed bracket 41. The first telescopic cylinder 32 uses the first swing arm 31 as a fulcrum. The telescopic rod 321 of the first telescopic cylinder... The second end 222 of the first connecting rod and the first end 231 of the second connecting rod are hinged to form a third hinge point 213. The second end 232 of the second connecting rod is hinged below the first swing arm 31 to form a fourth hinge point 214. When the first telescopic cylinder 32 is activated, the line connecting the first hinge point 211, the second hinge point 212, the third hinge point 213, and the fourth hinge point 214 forms a quadrilateral. The first drainage assembly 4 includes a first fixed bracket 41, a first telescopic bracket 42, a third telescopic cylinder 43, and a first drain pipe 44 fixed to the first telescopic bracket 42. The first drain pipe 44 is provided with... The system includes several drain outlets 441, which can simultaneously connect to multiple drain pipes facing different directions for drainage. The second telescopic cylinder 33 drives the first fixed bracket 41 to swing with the first swing arm 31 as the fulcrum. The third telescopic cylinder 43 drives the first telescopic bracket 42 to extend and retract with the first fixed bracket 41 as the fulcrum. The second drainage assembly 6 includes a second fixed bracket 61, a second telescopic bracket 62, a fourth telescopic cylinder 63, and a second drain pipe 64 fixed to the second telescopic bracket 62. The fourth telescopic cylinder 63 drives the second telescopic bracket 62 to extend and retract with the second fixed bracket 61 as the fulcrum.The first telescopic bracket 42 and the second fixed bracket 61 are hinged together. A fifth hinge point 421 and a third connecting rod 45 are provided at the end of the first telescopic bracket 42. A sixth hinge point 611 and a fourth connecting rod 65 are provided at the end of the second fixed bracket 61. The first end 451 of the third connecting rod is hinged to the fifth hinge point 421, the first end 651 of the fourth connecting rod is hinged to the sixth hinge point 611, and the second ends 452 of the third connecting rod and the second end 652 of the fourth connecting rod are hinged together to form a seventh hinge point 612. The fifth telescopic cylinder 7 drives the seventh hinge point 612 to swing with the first telescopic bracket 42 as the fulcrum.

[0041] In existing technologies, expansion joints are used for drainage pipes. The length of the drainage pipe increases through multiple expansion stages, thereby expanding the drainage and emergency response range. However, expansion joints have inherent drawbacks: (1) high manufacturing costs; (2) difficulty in sealing; (3) susceptibility to scale buildup, which leads to difficulty in expansion and contraction and easily damages the sealing structure, causing leaks; and (4) multiple expansion stages result in significant changes in the inner diameter of the drainage pipe, leading to inner diameter loss during drainage. Given these inherent drawbacks of expansion joints, and considering the desire for a maximum drainage and emergency response range, those skilled in the art have made various attempts to improve expansion joints, but these drawbacks cannot be fundamentally resolved. This embodiment creatively overcomes prejudice by employing a flexible hose 5 and its swing mechanism. The flexible hose 5 is connected to the first drain pipe 44 via a first clamp 51, and the flexible hose 5 is connected to the second drain pipe 64 via a second clamp 52, resulting in extremely low sealing costs. The flexible hose 5 is easy to bend and accommodate the second drain pipe 64, reducing space requirements. The manufacturing cost and technical requirements of the flexible hose 5 are significantly lower than those of telescopic drain pipes. The flexible hose is less prone to corrosion and scale buildup, and is easy to seal, which greatly reduces the overall vehicle manufacturing cost and subsequent maintenance costs. The inner diameter of the flexible hose 5 is close to or equal to the inner diameters of the first drain pipe 44 and the second drain pipe 64. The inner diameters of the first drain pipe 44 and the second drain pipe 64 are both R, and the inner diameter of the flexible hose 5 is r, where R:r = 1:(1~1.05). The flexible hose of this embodiment can solve the industry problem of inner diameter loss at low cost.

[0042] See Figure 1 , Figure 1 This is a three-dimensional structural diagram of the vehicle in its retracted or initial state. At this time, the linkage mechanism 3 is in the retracted state and located within the clearance position 12, the first drainage component 4 and the second drainage component 6 are in the retracted state, and the linkage mechanism 3, the first drainage component 4, the hose 5 and the second drainage component 6 are in the initial state. The five telescopic cylinders 7 drive the hose 5 to bend 90°, and the included angle between the first drainage pipe 44 and the second drainage pipe 66 is 90°, so that the second drainage component 6 is in a state perpendicular to the ground and located at the rear of the vehicle, occupying little space.

[0043] See Figure 2 , Figure 2 This is a three-dimensional structural diagram of the vehicle in its furthest side-to-side water-absorbing state. Reaching this state requires the following steps: First, activate the first telescopic cylinder 32, causing the lines connecting the first hinge point 211, the second hinge point 212, the third hinge point 213, and the fourth hinge point 214 to form a quadrilateral. At this point, the included angle between the first connecting rod 22 and the second connecting rod 23 is α, where α is an acute angle. Second, activate the rotating mechanism 2 and the second telescopic cylinder 33, causing the second drainage component 6 to face to the side. Third, activate the third telescopic cylinder 43, causing the second drainage pipe 64 to fully extend. Fourth, the included angle between the first drainage pipe 44 and the second drainage pipe 64 changes from 90° to 0°. First, the fifth telescopic cylinder 7 drives the second drainage component 6 to swing 90° backwards from the vehicle. Second, the fourth telescopic cylinder 63 drives the second drainage pipe 64 to slide and straighten the hose 5. Through these steps, the first drainage pipe 44 and the second drainage pipe 64 are fully extended, and the hose 5 is straightened, achieving the furthest side-to-side water-absorbing state for the vehicle.

[0044] See Figure 3 , Figure 3 This is a three-dimensional structural diagram of the vehicle in its deepest side-mounted water-absorbing state. Reaching this state requires the following steps: First, activate the first telescopic cylinder 32, causing the line connecting the first hinge point 211, the second hinge point 212, the third hinge point 213, and the fourth hinge point 214 to form a quadrilateral that is nearly trapezoidal. At this point, the included angle between the first connecting rod 22 and the second connecting rod 23 is b, where b is an acute angle and greater than a. Second, activate the rotating mechanism 2 and the second telescopic cylinder 33, causing the second drainage component 6 to face downwards and to the side. Third... First, the third telescopic cylinder 43 is activated, causing the second drain pipe 64 to extend fully. Then, the angle between the first drain pipe 44 and the second drain pipe 64 changes from 90° to 0°. First, the fifth telescopic cylinder 7 drives the second drain assembly 6 to swing 90° backwards from the vehicle. Second, the fourth telescopic cylinder 63 drives the second drain pipe 64 to slide and straighten the hose 5. Through these steps, the first drain pipe 44 and the second drain pipe 64 are fully extended, and the hose 5 is straightened, allowing the vehicle to achieve its deepest side water intake.

[0045] See Figure 4 , Figure 4This is a three-dimensional structural diagram of the vehicle in its deepest water-absorbing state at the rear. Reaching this state requires the following steps: First, activate the first telescopic cylinder 32, causing the lines connecting the first hinge point 211, the second hinge point 212, the third hinge point 213, and the fourth hinge point 214 to form a quadrilateral. At this time, the first drainage component 4 is in a vertical state, and the included angle between the first connecting rod 22 and the second connecting rod 23 is c, where c is an acute angle and c is greater than b. Second, activate the rotating mechanism 2 and the second telescopic cylinder 33, causing the second drainage component 6 to face rearward. Third, activate the... The third telescopic cylinder 43 extends the second drain pipe 64 to its full extent. In the fourth step, the angle between the first drain pipe 44 and the second drain pipe 64 changes from 90° to 0°. First, the fifth telescopic cylinder 7 drives the second drain assembly 6 to swing 90° to the rear of the vehicle. Second, the fourth telescopic cylinder 63 drives the second drain pipe 64 to slide and straighten the hose 5. Through the above steps, the first drain pipe 44 and the second drain pipe 64 are fully extended, and the hose 5 is straightened, achieving the deepest water intake state at the rear of the vehicle. The second drain pipe 64 can reach a maximum depth of 9 meters of water.

[0046] See Figure 5 , Figure 5 This is a three-dimensional structural diagram of the vehicle in its furthest rear water-absorbing state. Reaching this state requires the following steps: First, activate the first telescopic cylinder 32, causing the lines connecting the first hinge point 211, the second hinge point 212, the third hinge point 213, and the fourth hinge point 214 to form a quadrilateral. At this point, the included angle between the first connecting rod 22 and the second connecting rod 23 is α, where α is an acute angle. Second, activate the rotating mechanism 2 and the second telescopic cylinder 33, causing the second drainage component 6 to face rearward. Third, activate the third telescopic cylinder 43, causing the second drainage pipe 64 to fully extend. Fourth, the included angle between the first drainage pipe 44 and the second drainage pipe 64 changes from 90° to 0°. First, the fifth telescopic cylinder 7 drives the second drainage component 6 to swing 90° rearward. Second, the fourth telescopic cylinder 63 drives the second drainage pipe 64 to slide and straighten the hose 5. Through these steps, the first drainage pipe 44 and the second drainage pipe 64 are fully extended, and the hose 5 is straightened, achieving the deepest rear water-absorbing state for the vehicle.

[0047] The swing angle of the slewing mechanism 2 is 360°. The slewing mechanism 2 can drive the orientation of the first drainage component 4. The length of the extension of the first telescopic cylinder 32 can determine the angle between the first connecting rod 22 and the second connecting rod 23, thereby determining the angle between the first drainage component 4 and the horizontal plane, thus realizing flexible adjustment of the vehicle's flood drainage and disaster relief operation range.

[0048] when Figures 2 to 5 The work status has returned to Figure 1In the initial state, the angle between the first drain pipe and the second drain pipe changes from 0° to 90°. The specific steps are as follows: First, the fourth telescopic cylinder 63 drives the second drain pipe 64 to slide and retract the hose 5, so that the hose 5 is in the retracted state; the fifth telescopic cylinder 7 drives the second drain assembly 6 to swing 90° forward of the vehicle, so that the angle between the second drain assembly 6 and the first drain assembly 4 becomes 0°; third, the first telescopic cylinder 32, the second telescopic cylinder 33, the third telescopic cylinder 43 and the rotating mechanism 2 are retracted, so that the vehicle retracts to the position. Figure 1 The state shown.

Claims

1. A flood drainage and emergency rescue vehicle, characterized in that, Includes a chassis and a drainage assembly disposed on the chassis; The drainage assembly includes a rotary mechanism, a linkage mechanism, a first drainage assembly, a hose, and a second drainage assembly; The linkage mechanism includes a first fixed member, a first connecting rod, a second connecting rod, a first swing arm, a first telescopic cylinder, and a second telescopic cylinder disposed on the rotary mechanism. The first fixed member has a first hinge point and a second hinge point respectively disposed at both ends. The first end of the first connecting rod is hinged to the first hinge point. The first end of the first swing arm is hinged to the second hinge point. The first telescopic cylinder uses the first swing arm as a fulcrum. The telescopic rod of the first telescopic cylinder, the second end of the first connecting rod, and the first end of the second connecting rod are hinged to form a third hinge point. The second end of the second connecting rod is hinged below the first swing arm to form a fourth hinge point. When the first telescopic cylinder is activated, the line connecting the first hinge point, the second hinge point, the third hinge point, and the fourth hinge point forms a quadrilateral. The first drainage assembly includes a first fixed bracket, a first telescopic bracket, a third telescopic cylinder, and a first drain pipe fixed to the first telescopic bracket. The second telescopic cylinder drives the first fixed bracket to swing with the first swing arm as the fulcrum, and the third telescopic cylinder drives the first telescopic bracket to extend and retract with the first fixed bracket as the fulcrum. The second drainage assembly includes a second fixed bracket, a second telescopic bracket, a fourth telescopic cylinder, and a second drain pipe fixed to the second telescopic bracket. The fourth telescopic cylinder drives the second telescopic bracket to extend and retract with the second fixed bracket as a fulcrum. The fourth telescopic cylinder drives the second drain pipe to slide and straighten or retract the hose. The first telescopic bracket and the second fixed bracket are hinged together. A fifth hinge point and a third connecting rod are provided at the end of the first telescopic bracket, and a sixth hinge point and a fourth connecting rod are provided at the end of the second fixed bracket. The first end of the third connecting rod is hinged to the fifth hinge point, the first end of the fourth connecting rod is hinged to the sixth hinge point, and the second ends of the third and fourth connecting rods are hinged together to form a seventh hinge point. The fifth telescopic cylinder drives the seventh hinge point to swing with the first telescopic bracket as the fulcrum. The inner diameter of the hose is close to or equal to the inner diameter of the first drain pipe and the second drain pipe. The inner diameter of the first drain pipe and the second drain pipe are both R, and the inner diameter of the hose is r, where R:r = 1:(1~1.05).

2. The flood drainage and emergency rescue vehicle as described in claim 1, characterized in that, The hose and the first drain pipe are connected by a first clamp, and the hose and the second drain pipe are connected by a second clamp.

3. The flood drainage and emergency rescue vehicle as described in claim 1 or 2, characterized in that, When the linkage mechanism, the first drainage assembly, the hose and the second drainage assembly are in the initial state, the included angle between the first drainage assembly and the second drainage assembly is 90°.

4. The flood drainage and emergency rescue vehicle as described in claim 3, characterized in that, The steps to change the included angle from 90° to 0° between the first drain pipe and the second drain pipe are as follows: The fifth telescopic cylinder drives the second drainage assembly to swing 90° to the rear of the vehicle; The fourth telescopic cylinder drives the second drain pipe to slide and straighten the hose.

5. The flood drainage and emergency rescue vehicle as described in claim 3, characterized in that, The steps to change the included angle from 0° to 90° between the first drain pipe and the second drain pipe are as follows: The fourth telescopic cylinder drives the second drain pipe to slide and retract the hose; The fifth telescopic cylinder drives the second drainage assembly to swing 90° forward of the vehicle.

6. The flood drainage and emergency rescue vehicle as described in claim 3, characterized in that, The first drain pipe is provided with several drain outlets.

7. The flood drainage and emergency rescue vehicle as described in claim 3, characterized in that, The swing angle of the rotary mechanism is 360°.

8. The flood drainage and emergency rescue vehicle as described in claim 3, characterized in that, The chassis is equipped with outriggers on both sides of its rear end.

9. The flood drainage and emergency rescue vehicle as described in claim 3, characterized in that, A clearance space is provided above the chassis to accommodate the linkage mechanism.

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