Land reclamation mopping car

Abstract

The present invention relates to a land reclamation washing, sweeping and mopping vehicle for cleaning. A brush disc working system of a floor scrubber is arranged at the front end of the sweeping and mopping vehicle, and a water baffle assembly is added. When necessary, a water pushing plate can be installed at the front end of the brush disc. Dirt on the ground can be strongly scrubbed by the brush disc, and larger garbage can be pushed together by the full water baffle. If water accumulation is encountered, a water pushing plate can be installed to remove the accumulated water. A new mechanical operation mode is used to solve multiple needs of land reclamation work with one device, and the blank of cleaning equipment in the land reclamation field is filled, the labor intensity of cleaners is reduced, the work efficiency is greatly improved, damage to the ground is avoided, and the cleaning quality is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning equipment and relates to a washing, sweeping and mopping integrated vehicle used in the field of land reclamation, and in particular to a land reclamation mopping vehicle. Background Art

[0002] Land reclamation work is the cleaning work before the builder hands over the project to Party A or the developer hands over the project to the user after the construction is completed; the characteristics of the work are: 1. There is a lot of dust and construction waste accumulated on the work site, and the cleaning workload is large; 2. Dust and garbage form a lot of scale when they come into contact with water, which is difficult to clean; 3. There are many stains such as paint remaining during the construction work, which need to be repeatedly polished to remove; at present, my country lacks professional machinery for land reclamation, and it is easy to get stuck when using a floor scrubber. The efficiency of the mopping car produced by our company is still very low because it has no polishing function; before using our mopping car, land reclamation work was basically all done by hand, with high work intensity and extremely low efficiency; the purpose of the present invention is to provide a cleaning and washing mopping car that is particularly suitable for land reclamation work, so as to solve the problems of high labor occupation, high labor intensity and low efficiency in existing land reclamation work. Summary of the invention

[0003] The purpose of the present invention is to overcome the problem of insufficient capacity of prior art equipment and to provide a land reclamation mopping vehicle that can basically meet the requirements of land reclamation cleaning work, including cleaning, polishing, garbage collection and mopping.

[0004] The object of the present invention is achieved as follows: the land reclamation mopping vehicle includes main components such as a main brush, a mopping tool, an auxiliary roller, a squeezing roller, a driving roller, a supporting roller, a steering wheel, a seat, a clean water tank, a washing water tank, a front wheel, and a frame. The land reclamation mopping vehicle is provided with a brush plate system with a cleaning and polishing function, and the brush plate system includes a brush plate, a brush plate motor, a fixed brush plate mechanism, and an electric push rod type brush plate lifting mechanism;

[0005] The brush plate is installed on the lower bottom surface of the fixed brush plate mechanism, the brush plate and the brush plate motor are connected by an axis, the brush plate motor is above the fixed brush plate mechanism, one end of the electric push rod type brush plate lifting mechanism is fixed to the fixed brush plate mechanism, and the other end is fixed to the frame chassis; the electric push rod type brush plate lifting mechanism controls the lifting and lowering of the brush plate and the fixed brush plate mechanism by extending and retracting the electric push rod.

[0006] The electric push rod type brush plate lifting mechanism is a connecting rod mechanism, one end of the electric push rod type brush plate lifting mechanism is connected to a chain, and the other end of the chain is connected to a frame chassis.

[0007] The fixed brush plate mechanism is rigidly connected to a square tube A, the electric push rod type brush plate lifting mechanism is rigidly connected to a square tube B, the square tube B is nested inside the square tube A, and the square tubes A and B are vertically penetrated by a pin shaft.

[0008] Preferably, a water baffle assembly is arranged around the brush disc, the water baffle assembly is fixed on the fixed brush disc mechanism, and a detachable connection structure is formed between the water baffle assembly and the fixed brush disc mechanism.

[0009] Preferably, there are at least two brush discs.

[0010] Preferably, there are three brush discs arranged in a triangle.

[0011] Preferably: the water-pushing plate is a detachable tool of the land reclamation mopping vehicle, and when water-pushing operation is required, it is fixed in front of the water-retaining plate frame with bolts; the water-pushing plate is made of a rubber plate fixed on an aluminum profile with screws, and the shape of the water-pushing plate (30) is a trapezoid with an open bottom, and the specific water-pushing plate is a boat-bottom-shaped rubber plate with both ends facing forward and a little arc, and the length of the water-pushing plate is 1000-3000mm, and the height is 20-1000mm.

[0012] Preferably: the fixed end of the electric push rod is fixed on the frame, and the telescopic end is connected to the swing arm. When the electric push rod shaft is extended, the chain is pulled upward through the swing arm, and the chain lifts the fixed brush plate mechanism upward, thereby completing the lifting of the entire brush plate mechanism.

[0013] The working process is as follows: before the brush disc starts working, open the valve of the clean water tank first, and the water flowing out of the water pipe passes through the hole of the brush disc to wet the ground, and then start the brush disc operation. While cleaning the ground, the brush of the brush disc will throw water to all sides, which is blocked by water baffles in three directions. Most of the water still washes the ground under the action of the brush disc. Only part of the water can remain on the ground when the wiper blade at the rear is disconnected, and is collected into the washing water tank by the advancing mopping tool; the larger solid garbage on the ground is pushed to the two ends of the working area by the water baffle in front of the brush disc, and the small garbage that cannot be pushed by the water baffle is collected into the garbage bin by the main brush cleaning system after passing through the brush disc, and the small particles of dust and sewage that cannot be cleaned are brought into the washing water tank by the mopping tool.

[0014] Preferably: the fixed brush plate mechanism is a brush plate bracket, with a water baffle A in front of the brush plate bracket, which can be made of a harder rubber plate or plastic plate, and leave a distance of 3 to 5 mm from the ground so that it can push larger solid garbage such as bricks and cement blocks. There is a water baffle B on each side of the brush plate bracket, which can be made of a more flexible rubber plate or plastic plate and must contact the ground to prevent sewage from flowing out. Two sections of wear-resistant rubber plates are used as scrapers and must be close to the ground. A gap of 100 to 200 mm is left between the two scrapers for discharging floor washing sewage, and the side water baffles B on both sides of the outer ends of the two scrapers are 20 to 50 mm long to collect floor washing sewage on both sides of the brush plate bracket.

[0015] Preferably, the screw holes of the water baffle and the water scraper made of rubber plate and plastic soft plate can be long holes, so that they can continue to be used by adjusting the gap with the ground after wear, and the fixing screw places of the rubber plate and the plastic soft plate are reinforced with stainless steel strips.

[0016] Preferably: the fixed brush plate mechanism is a brush plate bracket. The brush plate bracket strength is set higher to avoid the probability of the brush plate system being damaged by collision. In order to reduce the possibility of the brush plate system being hit, it is also possible to consider designing flexible mechanisms and alarm devices at both ends of the front side of the brush plate bracket to prevent hard collisions; such flexible mechanisms and alarm devices can be varied, such as U-shaped or O-shaped or tubular springs with built-in mechanical trigger switches to connect warning lights and alarms. Of course, the entire brush plate system can also be designed behind the front wheel, and a solid garbage push plate needs to be designed in front of the front wheel. When water is needed, the water push plate can be installed on the garbage push plate; this type of vehicle has a better appearance and is not easy to touch the brush plate during cleaning operations.

[0017] The beneficial effects of the present invention are as follows: on the basis of a sweeping and mopping vehicle which already has a strong cleaning ability, the present invention installs a brush disc system with extremely strong floor washing ability in front of the sweeping and mopping vehicle, so that the sweeping and mopping vehicle can increase the cleaning and grinding or deep descaling ability without affecting the performance of sweeping, collecting garbage and removing dust, and utilizes the mopping tool to collect sewage, thus avoiding the problem that the water absorption mechanism of the floor washing machine is easily blocked. One person operates one machine, and realizes many cleaning functions such as pushing garbage, pushing accumulated water, grinding and washing the ground, collecting garbage, removing floating dust, and sucking sewage, thereby greatly improving work efficiency, reducing the labor intensity of operators, saving social resources, reducing cleaning costs, and filling the gap in cleaning equipment in the field of land reclamation; the present invention proposes to place the brush disc system in front of the front wheel, mainly considering minimizing the dead angle of grinding and washing the ground as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the land reclamation mopping vehicle of the present invention.

[0019] Figure 2 It is a top view of the land reclamation mopping vehicle of the present invention.

[0020] Figure 3 The utility model is a schematic diagram of the brush plate connection structure of the wasteland mopping vehicle of the present invention.

[0021] Figure 4 It is a front view of the water baffle assembly of the land reclamation mopping vehicle of the present invention.

[0022] Figure 5 The utility model is a top view of the water baffle assembly of the land reclamation mopping vehicle of the present invention.

[0023] Figure 6 It is a left view of the water baffle assembly of the land reclamation mopping vehicle of the present invention.

[0024] Figure 7 The utility model is a front view of the electric push rod type brush plate lifting mechanism of the wasteland mopping vehicle of the present invention.

[0025] Figure 8 The utility model is a schematic diagram of the general assembly of the installation position of the electric push rod type brush plate lifting mechanism of the wasteland mopping vehicle of the present invention.

[0026] Fig. 9 yes Figure 1 Partial view A.

[0027] Fig.10 yes Figure 8 Partial view of B.

[0028] In the figure: 1, brush plate 2, brush plate motor 3, fixed brush plate mechanism 4, electric push rod brush plate lifting mechanism 5, water baffle assembly 6, main brush 7, drag 8, auxiliary roller 9, squeezing roller 10, driving roller 11, supporting roller 12, steering wheel 13, seat 14, clean water tank 15, washing water tank 16, front wheel 17, driving wheel 18, square tube A 19, square tube B 20, pin 21, reinforcement tube 22, inner plate 23, water baffle 24, outer plate 25, left wiper plate 26, right wiper plate 27, anti-collision wheel 28, anti-collision wheel axle 29, hexagon socket full thread bolt 30, water push plate 31, bracket 32, electric push rod 33, swing arm 34, chain. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Example 1

[0031] like Figure 1-3 As shown, the land reclamation mopping vehicle comprises a main brush 6, a dragging device 7, an auxiliary roller 8, a squeezing roller 9, a driving roller 10, a supporting roller 11, a steering wheel 12, a seat 13, a clean water tank 14, a washing water tank 15, a front wheel 16, and a frame. The land reclamation mopping vehicle is provided with a brush plate system with cleaning and polishing functions, and the brush plate system comprises a brush plate 1, a brush plate motor 2, a fixed brush plate mechanism 3, and an electric push rod type brush plate lifting mechanism 4; the brush plate 1 is installed on the lower bottom surface of the fixed brush plate mechanism 3, the brush plate 1 and the brush plate motor 2 are axially connected, the brush plate motor 2 is above the fixed brush plate mechanism 3, and the electric push rod type brush plate lifting mechanism 4 controls the brush plate and the fixed brush plate mechanism 3 to rise and fall by extending and retracting the electric push rod.

[0032] The present invention installs a brush disc system with extremely strong floor washing ability in front of the sweeping mop vehicle on the basis of the sweeping mop vehicle which already has strong cleaning ability, so that the sweeping mop vehicle can increase the cleaning and grinding or deep descaling ability without affecting the performance of sweeping and collecting garbage and removing dust, and uses the mop to collect sewage.

[0033] Example 2

[0034] like Figure 1-3 As shown, the wasteland mopping vehicle comprises a main brush 6, a dragging device 7, an auxiliary roller 8, a squeezing roller 9, a driving roller 10, a supporting roller 11, a steering wheel 12, a seat 13, a clean water tank 14, a washing water tank 15, a front wheel 16, and a frame. The front end of the cleaning and washing trailer is provided with a brush plate 1, a brush plate motor 2, a fixed brush plate mechanism 3, and an electric push rod type brush plate lifting mechanism 4. The brush plate 1 is connected to the lower bottom surface of the fixed brush plate mechanism 3, one end of the electric push rod type brush plate lifting mechanism 4 is fixed to the fixed brush plate mechanism 3, and the other end is fixed to the frame chassis, and the brush plate 1 and the brush plate motor 2 are connected by an axis. Then, the lifting of the brush plate 1 is controlled by an electric push rod type brush plate lifting mechanism 4, which is a connecting rod mechanism, one end of the electric push rod type brush plate lifting mechanism 4 is connected to the chain, and the other end of the chain is connected to the frame chassis; the fixed brush plate mechanism 3 is rigidly fixedly connected with a square tube A18, and the electric push rod type brush plate lifting mechanism 4 is rigidly fixedly connected with a square tube B19, and the square tube B19 is nested inside the square tube A18, and a pin shaft 20 vertically passes through the square tube A18 and the square tube B19.

[0035] When the present invention is implemented, automatic brush plate cleaning is achieved through a wasteland clearing vehicle, which reduces labor intensity, and mopping is achieved through a drag tool, which improves work efficiency; the square tube A18, square tube B19, and pin shaft 20 used constitute an adaptive suspension structure of the brush plate, which can maintain a certain elastic floating according to the uneven changes in the road surface to adapt to different road cleaning needs.

[0036] Example 3

[0037] like Figure 1-10As shown, the wasteland mopping vehicle comprises a main brush 6, a towing device 7, an auxiliary roller 8, a squeezing roller 9, a driving roller 10, a supporting roller 11, a steering wheel 12, a seat 13, a clean water tank 14, a washing water tank 15, a front wheel 16, and a frame. The front end of the cleaning and washing trailer is provided with a brush plate 1, a brush plate motor 2, a fixed brush plate mechanism 3, and an electric push rod type brush plate lifting mechanism 4. The brush plate 1 is connected to the lower bottom surface of the fixed brush plate mechanism 3, one end of the electric push rod type brush plate lifting mechanism 4 is fixed to the fixed brush plate mechanism 3, and the other end is fixed to the frame chassis, the brush plate 1 and the brush plate motor 2 are connected by an axis, and the lifting mechanism of the brush plate 1 The lowering is controlled by an electric push rod type brush plate lifting mechanism 4, which is a connecting rod mechanism, one end of the chain is connected to the electric push rod type brush plate lifting mechanism 4, and the other end of the chain is connected to the frame chassis; the fixed brush plate mechanism 3 is rigidly fixedly connected with a square tube A18, and the electric push rod type brush plate lifting mechanism 4 is rigidly fixedly connected with a square tube B19, and the square tube B19 is nested inside the square tube A18, and the square tube A18 and the square tube B19 are vertically penetrated with a pin shaft 20; the brush plate 1 is provided with a water baffle assembly 5 around it, The water baffle assembly 5 is fixed on the electric push rod type brush plate lifting mechanism 4, and the water baffle assembly 5 and the electric push rod type brush plate lifting mechanism 4 are detachably connected; the water baffle assembly 5 includes a reinforcement tube 21, an inner plate 22, a water baffle 23, an outer plate 24, a left wiper 25, a right wiper 26, an anti-collision wheel 27, an anti-collision wheel shaft 28, and a hexagonal full-thread bolt 29; the water baffle 23 includes a front water baffle and a side water baffle; the side water baffles are 2 respectively arranged at both ends of the front water baffle; the outer plate 24, the water baffle 23, the inner plate 22, and the reinforcement tube 21 are arranged in sequence from the outer The two reinforcing tubes 21 are arranged in sequence and fixedly connected by hexagon socket full-thread bolts 29. The two intersection points of the reinforcing tube 21 are provided with anti-collision wheels 27 and anti-collision wheel shafts 28. There are three brush plates 1 arranged in a triangle. The lower bottom surface of the front water baffle is 3 to 5 mm above the ground. One end of the two side water baffles is connected to the front water baffle, and the other ends of the two side water baffles are respectively connected to the left wiper 25 and the right wiper 26; the left wiper 25 and the right wiper 26 are spaced 200 mm apart, and the two outer ends of the left wiper 25 and the right wiper 26 extend out of the side water baffle by 20 mm.

[0038] When the present invention is implemented, the front water baffle plate included in the water baffle plate 23 is equivalent to the water baffle plate A, the side water baffle plate included in the water baffle plate 23 is equivalent to the water baffle plate B, and the wiper plate is equivalent to the left wiper plate 25 and the right wiper plate 26; the wiper process after cleaning is realized by the water baffle plate assembly 5, which greatly improves the work efficiency and operation efficiency; the water baffle plate 23, the outer plate 24, the left wiper plate 25, the right wiper plate 26, and the side water baffle plates provided in the water baffle plate assembly 5 play the functions of water blocking and water scraping. For the water removal process, the work efficiency of this structure is extremely high, and dead angles are avoided at the same time;

[0039] On the basis of realizing the scraping process after cleaning through the water baffle assembly, the work efficiency and operation efficiency are greatly improved. Through the triangular arrangement of the brush plate 1, the cleaning width working surface is consistent with the width of the wasteland pioneer vehicle. At the same time, the increased overlapping area can achieve a very good cleaning effect. For some areas with more stains, it can enhance the cleaning effect, can strongly polish the ground, and dissolve stubborn stains on the ground; the lower bottom surface of the front water baffle is 3 to 5 mm higher than the ground, the purpose is to allow the garbage in front of the front water baffle to come in through this gap instead of pushing the garbage out; the lower bottom surface of the side water baffle is higher than the ground The left and right wiper blades 25 and 26 have a 0 to 2 mm surface thickness, so that they do not come into contact with or rub against the ground, do not need to be replaced frequently, and do not become consumable parts; the lower bottom surfaces of the left and right wiper blades 25 and 26 are flush with the ground, and a 200 mm gap is left between the left and right wiper blades 25 and 26, so that all the water in the water retaining plate flows through the gap to the back of the vehicle, and is absorbed by the towing device. This part is a consumable part, and only the left and right wiper blades 25 and 26 need to be replaced frequently. The replacement of this part saves time and effort, and greatly saves costs, especially if a rubber elastic plate is used, which has the effects of wear resistance and anti-obstacle damage.

[0040] Example 4

[0041] like Figure 1-10As shown, the wasteland mopping vehicle comprises a main brush 6, a towing device 7, an auxiliary roller 8, a squeezing roller 9, a driving roller 10, a supporting roller 11, a steering wheel 12, a seat 13, a clean water tank 14, a washing water tank 15, a front wheel 16, and a frame. The front end of the cleaning and washing trailer is provided with a brush plate 1, a brush plate motor 2, a fixed brush plate mechanism 3, and an electric push rod type brush plate lifting mechanism 4. The brush plate 1 is connected to the lower bottom surface of the fixed brush plate mechanism 3, one end of the electric push rod type brush plate lifting mechanism 4 is fixed to the fixed brush plate mechanism 3, and the other end is fixed to the frame chassis. The brush plate 1 and the brush plate motor 2 are connected by an axis, and the lifting of the brush plate 1 is controlled by the electric push rod type brush plate lifting mechanism 4, and the electric push rod type brush plate lifting mechanism 4 is a connecting rod mechanism. One end of the chain is connected to the electric push rod type brush plate lifting mechanism 4, and the other end of the chain is connected to the frame chassis; the fixed brush plate mechanism 3 is rigidly fixedly connected with a square tube A18, and the electric push rod type brush plate lifting mechanism 4 is rigidly fixedly connected with a square tube B19, and the square tube B19 is nested inside the square tube A18, and the square tube A18 and the square tube B19 are vertically penetrated with a pin shaft 20; the water pushing plate 30 is a detachable tool of the wasteland mopping vehicle, and when water pushing operation is required, it is fixed in front of the water baffle frame with bolts; the water pushing plate 30 is a boat bottom-shaped rubber plate with a slight arc at both ends facing forward, and the length of the water pushing plate 30 is 3000mm; the fixing part of the water pushing plate 30 is an aluminum profile, and the two are fixed with bolts.

[0042] When the present invention is implemented, when there is a lot of accumulated water, the water pusher 30 can be used to quickly deal with the accumulated water, rather than just for land reclamation and cleaning operations. This is extremely convenient and effective for use in waterlogged places such as streets or factories after heavy rains, and can quickly solve a series of problems caused by heavy rain waterlogging.

[0043] Example 5

[0044] like Figure 1-10As shown, the wasteland mopping vehicle comprises a main brush 6, a towing device 7, an auxiliary roller 8, a squeezing roller 9, a driving roller 10, a supporting roller 11, a steering wheel 12, a seat 13, a clean water tank 14, a washing water tank 15, a front wheel 16, and a frame. The front end of the cleaning and washing trailer is provided with a brush plate 1, a brush plate motor 2, a fixed brush plate mechanism 3, and an electric push rod type brush plate lifting mechanism 4. The brush plate 1 is connected to the lower bottom surface of the fixed brush plate mechanism 3, one end of the electric push rod type brush plate lifting mechanism 4 is fixed to the fixed brush plate mechanism 3, and the other end is fixed to the frame chassis. The brush plate 1 and the brush plate motor 2 are connected by an axis, and the lifting of the brush plate 1 is controlled by the electric push rod type brush plate lifting mechanism 4, and the electric push rod type brush plate lifting mechanism 4 is a connecting rod mechanism. The electric push rod type brush plate lifting mechanism 4 is connected to one end of the chain, and the other end of the chain is connected to the frame chassis; the fixed brush plate mechanism 3 is rigidly fixedly connected to a square tube A18, and the electric push rod type brush plate lifting mechanism 4 is rigidly fixedly connected to a square tube B19, and the square tube B19 is nested inside the square tube A18, and the square tube A18 and the square tube B19 are vertically passed through a pin shaft 20; the electric push rod type brush plate lifting mechanism 4 includes an electric push rod 32, one end of the electric push rod 32 is fixed to the bracket 31, and the other end is connected to the swing arm 33. When the electric push rod shaft is extended, the chain 34 is pulled upward through the swing arm, and the chain lifts the fixed brush plate mechanism 3 upward, thereby completing the lifting of the entire brush plate mechanism.

[0045] When the present invention is implemented, the electric push rod 32 in the electric push rod type brush plate lifting mechanism 4 can effectively promote the lifting of the brush plate, and the structure is simple, convenient and practical.

Claims

1. A land reclamation mopping vehicle, comprising a main brush (6), a mopping tool (7), an auxiliary roller (8), a squeezing roller (9), a driving roller (10), a supporting roller (11), a steering wheel (12), a seat (13), a clean water tank (14), a washing water tank (15), a front wheel (16), and a vehicle frame, characterized in that: A brush plate system with cleaning and polishing functions is arranged on the land reclamation mopping vehicle, and the brush plate system comprises a brush plate (1), a brush plate motor (2), a fixed brush plate mechanism (3), and an electric push rod type brush plate lifting mechanism (4); The brush plate (1) is mounted on the bottom surface of the fixed brush plate mechanism (3); the brush plate (1) and the brush plate motor (2) are connected by an axis; the brush plate motor (2) is located above the fixed brush plate mechanism (3); and the electric push rod type brush plate lifting mechanism (4) controls the lifting and lowering of the brush plate and the fixed brush plate mechanism (3) by extending and retracting the electric push rod; The electric push rod type brush plate lifting mechanism (4) is a connecting rod mechanism, one end of the electric push rod type brush plate lifting mechanism (4) is connected to a chain, and the other end of the chain is connected to the frame chassis; The fixed brush plate mechanism (3) is rigidly fixedly connected to a square tube A (18), the electric push rod type brush plate lifting mechanism (4) is rigidly fixedly connected to a square tube B (19), the square tube B (19) is nested inside the square tube A (18), and a pin shaft (20) vertically passes through the square tube A (18) and the square tube B (19); The brush disc (1) is provided with a water baffle assembly (5) around it, the water baffle assembly (5) is fixed on the electric push rod type brush disc lifting mechanism (4), and a detachable connection structure is formed between the water baffle assembly (5) and the electric push rod type brush disc lifting mechanism (4); the brush disc (1) is at least two; the brush disc (1) is three, arranged in a triangular shape; the wasteland mopping vehicle is provided with a water push plate (30), the water push plate (30) is in the shape of a trapezoid with an open bottom; the electric push rod type brush disc lifting mechanism (4) includes an electric push rod (32), one end of the electric push rod (32) is fixed on the bracket (31), and the other end is connected to the swing arm (33), when the electric push rod shaft is extended, the chain (34) is pulled upwards through the swing arm, and the chain lifts the fixed brush disc mechanism (3) upwards, thereby completing the lifting of the entire brush disc mechanism; The fixed brush plate mechanism is a brush plate bracket, with a water baffle A in front of the brush plate bracket, and the water baffle A is 3 to 5 mm away from the ground; there is a water baffle B on each side of the brush plate bracket, and the water baffle B contacts the ground; one end of the water baffle B on both sides of the brush plate bracket is connected to the water baffle A, and the other end is respectively connected to a left wiper plate and a right wiper plate, the left wiper plate and the right wiper plate are used as wipers close to the ground, a gap of 100 to 200 mm is set between the left wiper plate and the right wiper plate, and the outer ends of the left wiper plate and the right wiper plate extend out of the water baffle B by 20 to 50 mm.

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