Vehicle-mounted decontamination equipment
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 武汉客车制造股份有限公司
- Filing Date
- 2024-08-01
- Publication Date
- 2026-07-03
AI Technical Summary
Existing vehicle-mounted decontamination chambers cannot be adjusted according to the height of unmanned equipment, resulting in reduced decontamination efficiency and quality, and limited applicability.
A vehicle-mounted disinfection equipment was designed, comprising a mounting mechanism, a translation mechanism, a lifting mechanism, a disinfection mechanism, and a collection mechanism. Through components such as a hydraulic plate, a protective curtain, a motor drive, a telescopic component, and nozzles, the length and height of the protective curtain can be adjusted. It works in conjunction with a water pump, a water heater, a disinfection tank, and an air compressor to perform disinfection and wastewater treatment.
It achieves adaptation to the altitude of unmanned equipment, improves the quality and efficiency of decontamination, expands the scope of application, and ensures the effectiveness of decontamination and the practicality of wastewater treatment.
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Figure CN118988916B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of emergency detection, specifically to a vehicle-mounted decontamination equipment. Background Technology
[0002] In recent years, with the rapid development of my country's chemical industry, various types of chemical enterprises have been established. Fires can occur at any stage, including production, storage, transportation, and disposal. If fires involving hazardous chemicals are not controlled in time, they can cause incalculable harm to the surrounding environment and people. To improve safety, unmanned equipment is now often used to handle fires caused by chemicals. During the handling process, chemicals inevitably adhere to the unmanned equipment. To avoid secondary pollution, the unmanned equipment needs to be decontaminated in a timely manner.
[0003] Among the related technologies, a vehicle-mounted decontamination chamber for chemical pollution has been proposed, including a top plate, a bottom plate, and a front plate, a left plate, a rear plate, and a right plate connected end to end. The upper and lower ends of the front plate, the left plate, the rear plate, and the right plate are respectively connected to the top plate and the bottom plate. The front plate is formed by a front sealing plate and a front partition plate located outside the front sealing plate to form a hollow box-shaped structure. The inner cavity of the front plate is filled with a foaming filler. A support column is provided at the front end of the front plate for connecting to the chemical decontamination vehicle body.
[0004] The aforementioned technologies have the following drawbacks: the decontamination chamber, constructed from a top plate, a bottom plate, and front, left, rear, and right plates connected end to end, has a fixed volume and cannot be adjusted according to the height of unmanned equipment, thus reducing decontamination efficiency and quality and limiting its applicability. Summary of the Invention
[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a vehicle-mounted decontamination equipment to solve the technical problem that the height of the decontamination chamber cannot be adjusted according to the height of the unmanned equipment in the prior art.
[0006] To achieve the above technical objectives, the present invention provides a vehicle-mounted decontamination equipment, including a mounting mechanism. The mounting mechanism includes a hydraulic plate located at the rear of the vehicle body for mounting unmanned equipment, and the hydraulic plate is provided with a protective curtain for covering the unmanned equipment.
[0007] A translation mechanism is located at the rear of the vehicle body and is used to adjust the length of the protective curtain.
[0008] A lifting mechanism is located at the rear of the vehicle body and is used to adjust the height of the protective curtain.
[0009] A decontamination mechanism, located at the rear of the vehicle, is used for decontaminating unmanned equipment; and...
[0010] A collection mechanism is located at the rear of the vehicle body and is used to collect wastewater.
[0011] In some embodiments, the translation mechanism includes an outer rail located at the rear of the vehicle body, an inner rail slidably connected to the outer rail along its length, a drive assembly for driving the inner rail to slide along the outer rail on the vehicle body, and the top of the protective curtain located on the inner rail.
[0012] In some embodiments, the drive assembly includes a motor mounted on the vehicle body, a lead screw rotatably connected to the outer rail, the lead screw extending along the length of the outer rail, a driving bevel gear on the output shaft of the motor, a driven bevel gear meshing with the driving bevel gear on the lead screw, the lead screw passing through an inner rail, and a nut seat threadedly connected to the lead screw on the inner rail.
[0013] In some embodiments, a middle rail is slidably connected to the outer rail along its length direction, and an inner rail is slidably connected to the middle rail along its length direction. A limiting block is provided on one end of the middle rail near the outer rail, and a limiting plate is provided on the outer rail for abutting against the limiting block.
[0014] In some embodiments, the lifting mechanism includes a top rail and a bottom rail. The top rail is mounted on an inner rail. Multiple telescopic components are provided between the top rail and the bottom rail. Each telescopic component includes an outer rod that is rotatably connected end-to-end and an inner rod that is rotatably connected end-to-end. The end of the inner rod at the top is slidably connected to the top rail. The outer rods and inner rods at the same height are rotatably connected. The end of the outer rod at the bottom is slidably connected to the bottom rail. The outer rods on the same side and the inner rods on the same side are rotatably connected by rotating rods. One of the rotating rods is equipped with an electric push rod. The output shaft of the electric push rod is connected to another rotating rod. The top of the protective curtain is connected to the top rail, the bottom of the protective curtain is connected to the bottom rail, and the side of the protective curtain is connected to the rotating rod by a fastener.
[0015] In some embodiments, the connector includes a limiting ring disposed on a rotating rod, the limiting ring having a limiting groove on the side near the protective curtain, the protective curtain having a pin, and the pin having a ball head at the end away from the protective curtain, the ball head being slidably connected within the limiting groove.
[0016] In some embodiments, the disinfection mechanism includes a water tank, a water pump, and a water heater mounted on the vehicle body. A nozzle is provided on the outer rod. The outlet of the water tank is connected to the inlet of the water pump. The outlet of the water pump is connected to the inlet of the water heater. The outlet of the water heater is connected to the inlet of the nozzle. A sixth valve is provided between the water heater and the nozzle.
[0017] In some embodiments, the vehicle body is equipped with a proportional pump, a first disinfection tank, a second disinfection tank, and a third disinfection tank. The outlet of the water heater is connected to the first inlet of the proportional pump, and a first valve is provided between the water heater and the proportional pump. The outlet of the first disinfection tank is connected to the second inlet of the proportional pump, and a second valve is provided between the first disinfection tank and the proportional pump. The outlet of the second disinfection tank is connected to the third inlet of the proportional pump, and a third valve is provided between the second disinfection tank and the proportional pump. The outlet of the third disinfection tank is connected to the fourth inlet of the proportional pump, and a fourth valve is provided between the third disinfection tank and the proportional pump. The outlet nozzle of the proportional pump is connected to the inlet, and a fifth valve is provided between the proportional pump and the nozzle.
[0018] In some embodiments, an air compressor is provided on the vehicle body, the outlet of the air compressor is connected to the inlet of the nozzle, and a seventh valve is provided between the air compressor and the nozzle.
[0019] In some embodiments, the collection mechanism includes a baffle plate disposed on the periphery of the bearing surface of the hydraulic plate, a reinforcing rib is provided between the baffle plate and the hydraulic plate, a drain pipe is provided on the hydraulic plate, a sewage tank is provided on the vehicle body, and the outlet of the drain pipe is connected to the inlet of the sewage tank through a hose.
[0020] Compared with the prior art, the beneficial effects of the present invention include: adjusting the height of the protective curtain according to the height of the unmanned equipment using a lifting mechanism, so that the height of the protective curtain is adapted to the height of the unmanned equipment, thereby improving the quality and efficiency of disinfection, and having a wide range of applications and strong practicality. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of the decontamination equipment provided by the present invention;
[0022] Figure 2 This is a first-view overall structural schematic diagram of the translation mechanism provided by the present invention;
[0023] Figure 3 This is a schematic diagram of the overall structure of the translation mechanism provided by the present invention from a second perspective;
[0024] Figure 4 This is a cross-sectional view of the overall structure of the translation mechanism provided by the present invention;
[0025] Figure 5 This is a first-view overall structural diagram of the lifting mechanism provided by the present invention;
[0026] Figure 6 This is a second-view overall structural diagram of the lifting mechanism provided by the present invention;
[0027] Figure 7 This is a schematic diagram of the overall structure of the connector provided by the present invention;
[0028] Figure 8 This is a schematic diagram of the overall structure of the decontamination mechanism provided by the present invention;
[0029] Figure 9 This is a schematic diagram of the overall structure of the collection mechanism provided by the present invention.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1. Mounting mechanism; 11. Car body; 12. Hydraulic plate; 13. Protective curtain; 2. Translation mechanism; 21. Outer rail; 22. Inner rail; 23. Middle rail; 24. Limiting block; 25. Limiting plate; 3. Lifting mechanism; 31. Top rail; 32. Bottom rail; 4. Disinfection mechanism; 41. Water tank; 42. Water pump; 43. Water heater; 44. Nozzle; 45. Proportional pump; 46. First disinfection tank; 47. Second disinfection tank; 48. Third disinfection tank; 49. Air compressor; 5. Collection mechanism; 51. Water baffle; 5 2. Reinforcing rib; 53. Floor drain pipe; 54. Sewage tank; 55. Hose; 6. Drive assembly; 61. Motor; 62. Lead screw; 63. Nut seat; 7. Telescopic assembly; 71. Outer rod; 72. Inner rod; 73. Rotating rod; 74. Electric push rod; 8. Connector; 81. Limiting ring; 82. Limiting groove; 83. Pin; 84. Ball head; 91. Sixth valve; 92. First valve; 93. Second valve; 94. Third valve; 95. Fourth valve; 96. Fifth valve; 97. Seventh valve. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0033] This invention provides a vehicle-mounted decontamination device, the structure of which is as follows: Figure 1 - Figure 9 As shown, it includes a carrying mechanism 1, a translation mechanism 2, a lifting mechanism 3, a decontamination mechanism 4, and a collection mechanism 5.
[0034] The mounting mechanism 1 includes a hydraulic plate 12 located at the rear of the vehicle body 11 for mounting unmanned equipment, and the hydraulic plate 12 is provided with a protective curtain 13 for covering the unmanned equipment.
[0035] The translation mechanism 2 is located at the rear of the vehicle body 11, and the translation mechanism 2 is used to adjust the length of the protective curtain 13.
[0036] The lifting mechanism 3 is located at the rear of the vehicle body 11, and the lifting mechanism 3 is used to adjust the height of the protective curtain 13.
[0037] The decontamination mechanism 4 is located at the rear of the vehicle body 11 and is used to decontaminate unmanned equipment.
[0038] The collection mechanism 5 is located at the rear of the vehicle body 11 and is used to collect wastewater.
[0039] During use, the hydraulic plate 12 descends, and the unmanned equipment moves to the tail plate. After the unmanned equipment stops and stabilizes, the hydraulic plate 12 rises. Under the action of the translation mechanism 2, the protective curtain 13 extends and is positioned above the unmanned equipment. Under the action of the lifting mechanism 3, the protective curtain 13 descends until its bottom touches the hydraulic plate 12, enclosing the unmanned equipment and forming a closed space. Under the action of the decontamination mechanism 4, the unmanned equipment is decontaminated. At the same time, under the action of the collection mechanism 5, the wastewater generated during the decontamination process is treated.
[0040] In this invention, the height of the protective curtain 13 is adjusted by the lifting mechanism 3 according to the height of the unmanned equipment, so that the height of the protective curtain 13 is adapted to the height of the unmanned equipment, thereby improving the quality and efficiency of disinfection. It has a wide range of applications and strong practicality.
[0041] To extend the protective curtain 13, please refer to... Figure 2 In a preferred embodiment, the translation mechanism 2 includes an outer rail 21 located at the rear of the vehicle body 11, an inner rail 22 slidably connected to the outer rail 21 along its length, a driving assembly 6 for driving the inner rail 22 to slide along the outer rail 21 on the vehicle body 11, and the top of the protective curtain 13 is located on the inner rail 22.
[0042] When in use, under the driving action of the drive component 6, the inner rail 22 slides along the outer rail 21, and the inner rail 22 drives the protective curtain 13 to slide until the protective curtain 13 extends above the unmanned equipment.
[0043] To drive the inner rail 22 to slide, please refer to... Figure 3 In a preferred embodiment, the drive assembly 6 includes a motor 61 mounted on the vehicle body 11, a lead screw 62 rotatably connected to the outer rail 21, the lead screw 62 extending along the length of the outer rail 21, a driving bevel gear on the output shaft of the motor 61, a driven bevel gear meshing with the driving bevel gear on the lead screw 62, the lead screw 62 passing through the inner rail 22, and a nut seat 63 threadedly connected to the lead screw 62 on the inner rail 22.
[0044] In use, driven by the motor 61, and through the transmission of the driving bevel gear, driven bevel gear, lead screw 62, and nut seat 63, the inner rail 22 slides along the outer rail 21. The structure is simple and the transmission is efficient.
[0045] To improve the stability of inner rail 22, please refer to... Figure 4 In a preferred embodiment, a middle rail 23 is slidably connected to the outer rail 21 along the length direction of the outer rail 21, and an inner rail 22 is slidably connected to the middle rail 23 along the length direction of the middle rail 23. A limiting block 24 is provided on one end of the middle rail 23 near the outer rail 21, and a limiting plate 25 is provided on the outer rail 21 for abutting against the limiting block 24.
[0046] During use, the middle rail 23 slides along the outer rail 21 under the action of the inner rail 22. When the limiting block 24 abuts against the limiting plate 25, the middle rail 23 stops sliding. When the inner rail 22 is fully extended, half of the length of the middle rail 23 remains inside the outer rail 21. The middle rail 23 plays a load-bearing role and improves stability.
[0047] To unfold the protective curtain 13, please refer to... Figure 5 In a preferred embodiment, the lifting mechanism 3 includes a top rail 31 and a bottom rail 32. The top rail 31 is mounted on the inner rail 22. A plurality of telescopic components 7 are provided between the top rail 31 and the bottom rail 32. Each telescopic component 7 includes an outer rod 71 and an inner rod 72 that are rotatably connected end to end in sequence. The end of the inner rod 72 at the top is slidably connected to the top rail 31. The outer rods 71 and the inner rods 72 at the same height are rotatably connected. The end of the outer rod 71 at the bottom is slidably connected to the bottom rail 32. The outer rods 71 on the same side and the inner rods 72 on the same side are rotatably connected by rotating rods 73. One of the rotating rods 73 is provided with an electric push rod 74. The output shaft of the electric push rod 74 is connected to another rotating rod 73. The top of the protective curtain 13 is connected to the top rail 31, the bottom of the protective curtain 13 is connected to the bottom rail 32, and the side of the protective curtain 13 is connected to the rotating rod 73 by a fastener 8.
[0048] In use, driven by the electric push rod 74, the inner rod 72 at the top rotates while sliding along the top rail 31, and the outer rod 71 at the bottom rotates while sliding along the bottom rail 32. The inner rod 72 and the outer rod 71 in the middle rotate. Under the action of the inner rod 72 and the outer rod 71, the bottom rail 32 descends. Under the combined action of the inner rod 72, the outer rod 71 and the bottom rail 32, the protective curtain 13 is unfolded in the height direction. The structure is simple and the transmission is efficient.
[0049] To ensure the protective curtain 13 unfolds or folds evenly, please refer to... Figure 7 In a preferred embodiment, the connector 8 includes a limiting ring 81 disposed on the rotating rod 73. The limiting ring 81 has a limiting groove 82 on the side near the protective curtain 13. The protective curtain 13 is provided with a pin 83. The end of the pin 83 away from the protective curtain 13 is provided with a ball head 84. The ball head 84 is slidably connected in the limiting groove 82.
[0050] When in use, as the inner rod 72, outer rod 71 and bottom rail 32 rise or fall, the ball head 84 of the pin 83 slides along the limiting groove 82, thereby causing the protective curtain 13 to unfold or fold evenly.
[0051] To decontaminate unmanned equipment using clean water, please refer to... Figure 8 In a preferred embodiment, the disinfection mechanism 4 includes a water tank 41, a water pump 42, and a water heater 43 mounted on the vehicle body 11. A nozzle 44 is provided on the outer rod 71. The outlet of the water tank 41 is connected to the inlet of the water pump 42. The outlet of the water pump 42 is connected to the inlet of the water heater 43. The outlet of the water heater 43 is connected to the inlet of the nozzle 44. A sixth valve 91 is provided between the water heater 43 and the nozzle 44.
[0052] When in use, the sixth valve 91 is opened, and under the action of the water pump 42, the water in the water tank 41 is sprayed out from the nozzle 44 to disinfect the unmanned equipment. The water heater 43 can also be used to heat the water according to the ambient temperature to improve the disinfection effect.
[0053] To disinfect unmanned equipment using disinfectant, please refer to... Figure 8 In a preferred embodiment, the vehicle body 11 is equipped with a proportional pump 45, a first disinfection tank 46, a second disinfection tank 47, and a third disinfection tank 48. The outlet of the water heater 43 is connected to the first inlet of the proportional pump 45. A first valve 92 is provided between the water heater 43 and the proportional pump 45. The outlet of the first disinfection tank 46 is connected to the second inlet of the proportional pump 45. A second valve 93 is provided between the first disinfection tank 46 and the proportional pump 45. The outlet of the second disinfection tank 47 is connected to the third inlet of the proportional pump 45. A third valve 94 is provided between the second disinfection tank 47 and the proportional pump 45. The outlet of the third disinfection tank 48 is connected to the fourth inlet of the proportional pump 45. A fourth valve 95 is provided between the third disinfection tank 48 and the proportional pump 45. The outlet of the proportional pump 45 is connected to the inlet of the nozzle 44. A fifth valve 96 is provided between the proportional pump 45 and the nozzle 44.
[0054] In use, open the first valve 92, the second valve 93, the third valve 94, the fourth valve 95, and the fifth valve 96. According to the type of chemical agent contaminated on the unmanned equipment, use the proportioning pump 45 to adjust the ratio of disinfectant in the first disinfection tank 46, the second disinfection tank 47, and the third disinfection tank 48. The adjusted disinfectant is mixed with water and then sprayed from the nozzle to disinfect the unmanned equipment, further improving the disinfection effect.
[0055] To air dry unmanned equipment, please refer to... Figure 8In a preferred embodiment, an air compressor 49 is provided on the vehicle body 11, the outlet of the air compressor 49 is connected to the inlet of the nozzle 44, and a seventh valve 97 is provided between the air compressor 49 and the nozzle 44.
[0056] When in use, open the seventh valve, and under the action of the air compressor, the airflow is sprayed out from the nozzle to dry the water remaining on the unmanned equipment, further improving the disinfection effect.
[0057] For wastewater recycling, please refer to... Figure 9 In a preferred embodiment, the collection mechanism 5 includes a baffle plate 51 disposed on the periphery of the bearing surface of the hydraulic plate 12, a reinforcing rib 52 between the baffle plate 51 and the hydraulic plate 12, a drain pipe 53 disposed on the hydraulic plate 12, a sewage tank 54 disposed on the vehicle body 11, and the outlet of the drain pipe 53 and the inlet of the sewage tank 54 are connected by a hose 55.
[0058] When in use, the baffle plate 51 and the hydraulic plate 12 form a water collection tank. Wastewater generated during the washing and disinfection process flows into the water collection tank, and then passes through the floor drain pipe 53 and the hose 55 before entering the sewage tank 54, reducing the possibility of secondary pollution.
[0059] To better understand this invention, the following is combined with... Figure 1 - Figure 9 The working principle of a vehicle-mounted decontamination equipment according to the present invention is described in detail as follows: The hydraulic plate 12 descends, and the unmanned equipment moves to the tail plate. After the unmanned equipment stops and stabilizes, the hydraulic plate 12 rises. Under the action of the translation mechanism 2, the protective curtain 13 extends and is positioned above the unmanned equipment. Under the action of the lifting mechanism 3, the protective curtain 13 descends until the bottom of the protective curtain 13 abuts against the hydraulic plate 12, and the protective curtain 13 encloses the unmanned equipment to form a closed space. Under the action of the decontamination mechanism 4, the unmanned equipment is decontaminated. At the same time, under the action of the collection mechanism 5, the wastewater generated during the decontamination process is treated.
[0060] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A vehicle-mounted decontamination device, characterized in that, include: The mounting mechanism includes a hydraulic plate located at the rear of the vehicle body for mounting unmanned equipment, and the hydraulic plate is provided with a protective curtain for covering the unmanned equipment. A translation mechanism is located at the rear of the vehicle body and is used to adjust the length of the protective curtain. A lifting mechanism is located at the rear of the vehicle body and is used to adjust the height of the protective curtain. A decontamination mechanism is located at the rear of the vehicle body and is used to decontaminate unmanned equipment. A collection mechanism, located at the rear of the vehicle body, is used to collect wastewater. The translation mechanism includes an outer rail located at the rear of the vehicle body, an inner rail slidably connected to the outer rail along its length, a drive assembly for driving the inner rail to slide along the outer rail on the vehicle body, and the top of the protective curtain located on the inner rail. The lifting mechanism includes a top rail and a bottom rail. The top rail is mounted on the inner rail. Multiple telescopic components are provided between the top rail and the bottom rail. Each telescopic component includes an outer rod that is rotatably connected end-to-end and an inner rod that is rotatably connected end-to-end. The end of the inner rod at the top is slidably connected to the top rail. The outer rods and inner rods at the same height are rotatably connected. The end of the outer rod at the bottom is slidably connected to the bottom rail. The outer rods on the same side and the inner rods on the same side are rotatably connected by rotating rods. One of the rotating rods is equipped with an electric push rod. The output shaft of the electric push rod is connected to another rotating rod. The top of the protective curtain is connected to the top rail, the bottom of the protective curtain is connected to the bottom rail, and the side of the protective curtain is connected to the rotating rod through a fastener. The connector includes a limiting ring on the rotating rod, a limiting groove on the side of the limiting ring near the protective curtain, a pin on the protective curtain, and a ball head on the end of the pin away from the protective curtain, the ball head being slidably connected in the limiting groove; The disinfection mechanism includes a water tank, a water pump, and a water heater mounted on the vehicle body. A nozzle is provided on the outer rod. The outlet of the water tank is connected to the inlet of the water pump. The outlet of the water pump is connected to the inlet of the water heater. The outlet of the water heater is connected to the inlet of the nozzle. A sixth valve is provided between the water heater and the nozzle. The vehicle body is equipped with a proportional pump, a first disinfection tank, a second disinfection tank, and a third disinfection tank. The outlet of the water heater is connected to the first inlet of the proportional pump, and a first valve is provided between the water heater and the proportional pump. The outlet of the first disinfection tank is connected to the second inlet of the proportional pump, and a second valve is provided between the first disinfection tank and the proportional pump. The outlet of the second disinfection tank is connected to the third inlet of the proportional pump, and a third valve is provided between the second disinfection tank and the proportional pump. The outlet of the third disinfection tank is connected to the fourth inlet of the proportional pump, and a fourth valve is provided between the third disinfection tank and the proportional pump. The outlet of the proportional pump is connected to the inlet of the nozzle, and a fifth valve is provided between the proportional pump and the nozzle. An air compressor is installed on the vehicle body. The outlet of the air compressor is connected to the inlet of the nozzle. A seventh valve is installed between the air compressor and the nozzle.
2. The vehicle-mounted decontamination equipment according to claim 1, characterized in that, The drive assembly includes a motor mounted on the vehicle body, a lead screw rotatably connected to the outer rail, the lead screw extending along the length of the outer rail, a driving bevel gear on the output shaft of the motor, a driven bevel gear meshing with the driving bevel gear on the lead screw, the lead screw passing through the inner rail, and a nut seat threadedly connected to the lead screw on the inner rail.
3. The vehicle-mounted decontamination equipment according to claim 1, characterized in that, A middle rail is slidably connected to the outer rail along its length direction, and an inner rail is slidably connected to the middle rail along its length direction. A limiting block is provided on one end of the middle rail near the outer rail, and a limiting plate is provided on the outer rail for abutting against the limiting block.
4. The vehicle-mounted decontamination equipment according to claim 1, characterized in that, The collection mechanism includes a baffle plate located around the bearing surface of the hydraulic plate, a reinforcing rib between the baffle plate and the hydraulic plate, a drain pipe on the hydraulic plate, a sewage tank on the vehicle body, and the outlet of the drain pipe connected to the inlet of the sewage tank via a flexible hose.