Pure oxygen low-quality fuel burner

Abstract

The utility model relates to the technical field of combustors, and discloses a pure oxygen low-quality fuel combustor which comprises a sweeping board, a hydraulic machine is fixedly connected to the interior of a hydraulic box, a motor is fixedly connected to the upper surface of a lifting plate, and a combustor column body is fixedly connected to the upper surface of a rotating disc. The combustor has the advantages that after fuel in the combustor cylinder is combusted, the air blower is started, combustion of the fuel in the combustor cylinder is accelerated, flames generated by combustion are sprayed out of the flame spraying head, then the hydraulic machine is started, the flames sprayed out of the flame spraying head can heat objects at different heights, the motor is started, and the combustor is started. The angle of flame sprayed by the flame nozzle of the burner cylinder is adjusted, so that a worker can heat objects at different angles conveniently, hands of the worker are prevented from being in direct contact with the burner cylinder, the hands of the worker are prevented from being scalded, and the working efficiency is improved. Through the operation, the effects that the combustor automatically turns and the combustion effect of the combustor is good are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a pure oxygen low-quality fuel burner. Background Art

[0002] A burner is a device whose primary function is to mix fuel (such as gas, liquid, or solid) with air and then burn it to generate heat. Burners are widely used in a variety of fields, from industrial production to domestic life, such as boilers, drying ovens, and furnaces. The fuel used can be natural gas, light oil, or heavy oil. Burner design should take into account efficiency, noise level, and flame stability to ensure efficient and safe conversion of fuel into heat energy.

[0003] In the prior art, Chinese patent publication No. CN220397511U discloses a mixed fuel burner, which relates to the technical field of burners. The utility model includes a mixed fuel burner body, one side of the mixed fuel burner body is symmetrically fixedly connected with a connecting wire, and one side of the mixed fuel burner body is provided with a control box. When the mixed fuel burner body is used, the utility model first passes one end of the connecting wire on one side of the mixed fuel burner body through the middle position of the two screw hole clamps, and inserts it into the slot on the control box for connection control. Then, the threaded rod is manually held and rotated to a certain position in the inner wall of the circular hole block. Under the limiting action of the limiting rod, the limiting hole and the first rectangular block, the two screw hole clamps can be driven to move in opposite directions, so that one side of the connecting wire is tightly attached to the outer surface of one end of the connecting wire to clamp and fix it, so that it is not easy to loosen or fall off from the slot on the control box when it is pulled by external force.

[0004] During use, this type of mixed fuel burner relies only on the control box, limit rod and limit hole to prevent it from loosening or falling off from the slot on the control box when pulled by external force. The burner will generate a large amount of flame and high temperature when working. This device is not equipped with a burner steering device, which requires manual adjustment of the burner, which can easily burn the hands of the staff, resulting in poor use of this equipment, and therefore needs to be improved. Utility Model Content

[0005] The utility model aims to provide a pure oxygen low-quality fuel burner, which has the effects of automatically turning the burner and achieving good combustion effect.

[0006] The above technical objective of the utility model is achieved through the following technical solutions: A pure oxygen low-quality fuel burner, including a vehicle plate, a push rod is fixedly connected to the outside of the vehicle plate, a hydraulic tank is fixedly connected to the upper surface of the vehicle plate, a hydraulic press is fixedly connected to the inside of the hydraulic tank, a hydraulic hole is opened in the inside of the hydraulic tank, a lifting plate is arranged outside the vehicle plate, the output end of the hydraulic press penetrates into the inside of the hydraulic hole and is fixedly connected to the lifting plate, a motor is fixedly connected to the upper surface of the lifting plate, a turntable is arranged outside the lifting plate, the output end of the motor is fixedly connected to the turntable, a blower is fixedly connected to the upper surface of the turntable, an air duct is fixedly connected to the outside of the blower, a burner cylinder is fixedly connected to the upper surface of the turntable, an air inlet is opened in the inside of the burner cylinder, the air duct is inserted into the air inlet, a flame nozzle is fixedly connected to the outside of the burner cylinder, and wheels are arranged at the bottom of the vehicle plate.

[0007] By adopting the above technical solutions, after the fuel in the burner cylinder burns, start the blower, and the blower blows air into the inside of the burner cylinder through the air duct, accelerating the combustion of the fuel in the inside of the burner cylinder so that the combustion generates flames and ejects from the flame nozzle. Then start the hydraulic press, and the hydraulic press starts to work. The output end of the hydraulic press penetrates into the inside of the hydraulic hole and is fixedly connected to the lifting plate. The output end of the hydraulic press drives the lifting plate to move upward, thereby raising the height of the burner cylinder from the ground, enabling the flames ejected by the flame nozzle to heat objects at different heights. When it is necessary to rotate the angle of the burner cylinder, start the motor, and the motor starts to work. The output end of the motor is fixedly connected to the turntable, and the burner cylinder is fixedly connected to the upper surface of the turntable. By driving the rotation of the turntable by the output end of the motor, the rotation of the burner cylinder is driven, adjusting the angle of the flames ejected by the flame nozzle of the burner cylinder, facilitating the staff to heat objects at different angles, and preventing the staff's hands from directly contacting the burner cylinder, preventing the scalding of the staff's hands. Through the above operations, the effects of enabling the burner to automatically turn and having a good combustion effect of the burner are achieved.

[0008] The further setting of the utility model is: A fuel inlet is opened in the inside of the burner cylinder, and a stuffing funnel is fixedly connected to the outside of the fuel inlet.

[0009] By adopting the above technical solutions, the stuffing funnel facilitates the staff to add fuel into the inside of the burner cylinder.

[0010] The further setting of the utility model is: A primer hole is opened in the inside of the burner cylinder, a hinge is hinged to the outside of the primer hole, and a lid is hinged to the outside of the hinge.

[0011] By adopting the above technical solution, the ignition hole facilitates the staff to ignite the added fuel inside the burner cylinder. After the fuel is ignited, the lid is covered to prevent the flame from escaping through the cylinder wall of the burner cylinder.

[0012] A further setting of the present utility model is that: a windproof plate is fixedly connected to the outside of the air outlet, and the number of the windproof plates is two.

[0013] By adopting the above technical solution, the two windproof plates prevent the backflow of the wind blown out of the air duct.

[0014] A further setting of the present utility model is that: a heat insulation layer is arranged on the outside of the burner cylinder, and the material of the heat insulation layer is aerogel.

[0015] By adopting the above technical solution, the heat insulation layer made of aerogel reduces the temperature on the surface of the burner cylinder and prevents the staff from being scalded accidentally when contacting the burner cylinder.

[0016] A further setting of the present utility model is that: an adjustment hole is opened inside the flame nozzle, a folding mesh eye mask is arranged inside the flame nozzle, an adjustment knob is arranged outside the flame nozzle, the bottom of the adjustment knob is fixedly connected with an adjustment rod, and the adjustment rod penetrates into the adjustment hole and is fixedly connected with the folding mesh eye mask.

[0017] By adopting the above technical solution, by pulling or pressing the adjustment knob, the adjustment rod drives the expansion and contraction of the folding mesh eye mask, thereby changing the distance between the meshes of the folding mesh eye mask. Thus, when the flame passes through the folding mesh eye mask, the size of the flame is changed.

[0018] A further setting of the present utility model is that: a storage box is fixedly connected to the upper surface of the turntable, and a combustion improver is arranged inside the storage box.

[0019] By adopting the above technical solution, the storage box facilitates the placement of the combustion improver. The combustion improver is added to the fuel inside the burner cylinder through the ignition hole to make the fuel burn fully.

[0020] A further setting of the present utility model is that: a pull ring is arranged on the outside of the burner cylinder, a scraping rod is fixedly connected to the outside of the pull ring, a scraping plate is arranged inside the burner cylinder, the scraping rod penetrates into the air outlet and is fixedly connected with the scraping plate, and an ash discharge hole is opened inside the burner cylinder.

[0021] By adopting the above technical solution, the staff pulls the pull ring to drive the scraping rod to move. The scraping rod scrapes the ash after the fuel burns out through the ash discharge hole to prevent the ash from accumulating inside the burner cylinder.

[0022] A further setting of the present utility model is that: an external part of the lifting plate is fixedly connected with a fan, and the number of the fans is four.

[0023] By adopting the above technical solution, a large amount of heat will be generated when the motor works, and the four fans blow air to dissipate heat from the motor.

[0024] A further setting of the present utility model is that: an external part of the vehicle plate is fixedly connected with an anti-collision sponge, and the distances between every two of the anti-collision sponges are all equal.

[0025] By adopting the above technical solution, when a staff member pushes the push rod to move the vehicle plate, the anti-collision sponge prevents the feet of the staff member from directly contacting the vehicle plate and prevents the feet of the staff member from being bruised.

[0026] The beneficial effects of the present utility model are:

[0027] 1. In the present utility model, through the settings among the vehicle plate, the push rod, the hydraulic tank, the hydraulic press, the hydraulic holes, the lifting plate, the motor, the turntable, the blower, the air duct, the burner column, the air outlet, the flame nozzle, and the wheels, while the burner is burning, the burning angle of the burner can be automatically adjusted.

[0028] 2. In the present utility model, through the settings among the fuel inlet, the stuffing funnel, the ignition hole, the hinge, the lid, the wind-proof plate, the heat-insulating layer, the adjustment hole, the folding mesh eye mask, the adjustment knob, the adjustment rod, the storage box, the pull ring, the scraping rod, the scraping plate, the combustion improver, the ash outlet, the fan, and the anti-collision sponge, the stuffing funnel facilitates the staff to add fuel into the interior of the burner column, the ignition hole facilitates the staff to ignite the fuel added into the interior of the burner column, after the fuel is ignited, the lid is covered to prevent the flame from escaping from the column wall of the burner column, the two wind-proof plates prevent the backflow of the wind blown out from the air duct, the heat-insulating layer made of aerogel material reduces the temperature on the surface of the burner column and prevents the staff from being scalded accidentally when contacting the burner column, by pulling or pressing the adjustment knob, the adjustment rod drives the stretching and contraction of the folding mesh eye mask, thereby changing the spacing of the mesh holes of the folding mesh eye mask, so that when the flame sprays out through the folding mesh eye mask, the size of the flame is changed, the storage box is convenient for placing the combustion improver, the combustion improver is added into the fuel inside the burner column through the ignition hole to make the fuel burn fully, the staff pulls the pull ring to drive the scraping rod to move, and the scraping rod scrapes the ash after the fuel burns through the scraping plate through the ash outlet to prevent the ash from accumulating inside the burner column, a large amount of heat will be generated when the motor works, and the four fans blow air to dissipate heat from the motor, when the staff pushes the push rod to move the vehicle plate, the anti-collision sponge prevents the feet of the staff member from directly contacting the vehicle plate and prevents the feet of the staff member from being bruised. Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 Structural schematic diagram of the present utility model;

[0031] Figure 2 Structural schematic diagram of the hydraulic press and the lifting plate of the present utility model;

[0032] Figure 3 Structural schematic diagram of the motor and the turntable of the present utility model;

[0033] Figure 4 Structural schematic diagram of the scraping rod and the scraping plate of the present utility model;

[0034] Figure 5 Structural schematic diagram of the adjusting rod and the folding mesh eye mask of the present utility model.

[0035] In the figure, 1, vehicle board; 2, push rod; 3, hydraulic tank; 4, hydraulic press; 5, hydraulic hole; 6, lifting plate; 7, motor; 8, turntable; 9, blower; 10, air duct; 11, burner cylinder; 12, burner cylinder; 13, flame nozzle; 14, fuel inlet; 15, filler funnel; 16, ignition hole; 17, hinge; 18, lid; 19, wind shield; 20, heat insulation layer; 21, adjusting hole; 22, folding mesh eye mask; 23, adjusting knob; 24, adjusting rod; 25, storage box; 26, combustion improver; 27, pull ring; 28, scraping rod; 29, scraping plate; 30, ash discharge hole; 31, fan; 32, anti-collision sponge; 33, wheel. Specific embodiments

[0036] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0037] Refer to Figures 1-5, a pure oxygen low-quality fuel burner, including a vehicle plate 1. A push rod 2 is fixedly connected to the outside of the vehicle plate 1. A hydraulic tank 3 is fixedly connected to the upper surface of the vehicle plate 1. A hydraulic press 4 is fixedly connected to the inside of the hydraulic tank 3. A hydraulic hole 5 is opened inside the hydraulic tank 3. A lifting plate 6 is arranged outside the vehicle plate 1. The output end of the hydraulic press 4 penetrates into the inside of the hydraulic hole 5 and is fixedly connected to the lifting plate 6. A motor 7 is fixedly connected to the upper surface of the lifting plate 6. A turntable 8 is arranged outside the lifting plate 6. The output end of the motor 7 is fixedly connected to the turntable 8. A blower 9 is fixedly connected to the upper surface of the turntable 8. An air duct 10 is fixedly connected to the outside of the blower 9. A burner cylinder 11 is fixedly connected to the upper surface of the turntable 8. An air inlet 12 is opened inside the burner cylinder 11. The air duct 10 is inserted into the air inlet 12. A flame nozzle 13 is fixedly connected to the outside of the burner cylinder 11. Wheels 33 are arranged at the bottom of the vehicle plate 1. After the fuel inside the burner cylinder 11 burns, start the blower 9. The blower 9 blows air through the air duct 10 into the inside of the burner cylinder 11, accelerating the combustion of the fuel inside the burner cylinder 11 so that the combustion generates flames that spray out from the flame nozzle 13. Then start the hydraulic press 4. The hydraulic press 4 starts to work. The output end of the hydraulic press 4 penetrates into the inside of the hydraulic hole 5 and is fixedly connected to the lifting plate 6. The output end of the hydraulic press 4 drives the lifting plate 6 to move upward, thereby raising the height of the burner cylinder 11 from the ground, enabling the flames sprayed by the flame nozzle 13 to heat objects at different heights. When it is necessary to rotate the angle of the burner cylinder 11, start the motor 7. The motor 7 starts to work. The output end of the motor 7 is fixedly connected to the turntable 8. The burner cylinder 11 is fixedly connected to the upper surface of the turntable 8. By driving the rotation of the turntable 8 by the output end of the motor 7, the rotation of the burner cylinder 11 is driven, adjusting the angle of the flames sprayed by the flame nozzle 13 of the burner cylinder 11, facilitating the staff to heat objects at different angles, and preventing the staff's hands from directly contacting the burner cylinder 11, preventing the scalding of the staff's hands. Through the above operations, the effects of automatic turning of the burner and good combustion effect of the burner are achieved. A fuel inlet 14 is opened inside the burner cylinder 11. A stuffing funnel 15 is fixedly connected to the outside of the fuel inlet 14. The stuffing funnel 15 facilitates the staff to add fuel into the inside of the burner cylinder 11. An ignition hole 16 is opened inside the burner cylinder 11. A hinge 17 is hinged to the outside of the ignition hole 16. A lid 18 is hinged to the outside of the hinge 17. The ignition hole 16 facilitates the staff to ignite the fuel added inside the burner cylinder 11. After the fuel is ignited, cover the lid 18 to prevent the flames from escaping from the cylinder wall of the burner cylinder 11. A windproof plate 19 is fixedly connected to the outside of the air inlet 12. The number of the windproof plates 19 is two. The two windproof plates 19 prevent the backflow of the air blown out of the air duct 10. A heat insulation layer 20 is arranged outside the burner cylinder 11. The material of the heat insulation layer 20 is aerogel. The heat insulation layer 20 made of aerogel material reduces the temperature on the surface of the burner cylinder 11.To prevent the staff from being scalded accidentally after coming into contact with the burner column 11, an adjustment hole 21 is provided inside the flame nozzle 13. A folding mesh eye shield 22 is arranged inside the flame nozzle 13. An adjustment knob 23 is arranged outside the flame nozzle 13. A bottom of the adjustment knob 23 is fixedly connected to an adjustment rod 24. The adjustment rod 24 penetrates into the adjustment hole 21 and is fixedly connected to the folding mesh eye shield 22. By pulling or pressing the adjustment knob 23, the adjustment rod 24 drives the expansion and contraction of the folding mesh eye shield 22, thereby changing the spacing of the mesh holes of the folding mesh eye shield 22. Thus, when the flame sprays out through the folding mesh eye shield 22, the size of the flame is changed. A storage box 25 is fixedly connected to an upper surface of the turntable 8. A combustion improver 26 is arranged inside the storage box 25. The storage box 25 is convenient for placing the combustion improver 26. The combustion improver 26 is added to the fuel inside the burner column 11 through the ignition hole 16 to make the fuel burn fully. A pull ring 27 is arranged outside the burner column 11. A scraping rod 28 is fixedly connected to an outside of the pull ring 27. A scraping plate 29 is arranged inside the burner column 11. The scraping rod 28 penetrates into the air inlet 12 and is fixedly connected to the scraping plate 29. An ash discharge hole 30 is provided inside the burner column 11. The staff pulls the pull ring 27 to drive the scraping rod 28 to move. The scraping rod 28 scrapes the ash after the fuel burns out through the ash discharge hole 30 to prevent the ash from accumulating inside the burner column 11. A fan 31 is fixedly connected to an outside of the lifting plate 6. The number of the fans 31 is four. A large amount of heat is generated when the motor 7 works. The four fans 31 blow air to dissipate heat for the motor 7. An anti-collision sponge 32 is fixedly connected to an outside of the vehicle board 1. The distances between every two of the anti-collision sponges 32 are equal. When the staff pushes the push rod 2 to move the vehicle board 1, the anti-collision sponge 32 prevents the staff's feet from directly contacting the vehicle board 1 and prevents the staff's feet from being bruised.,

[0038] In this utility model, after the fuel burns inside the burner cylinder 11, the blower 9 is started. The blower 9 blows air through the air duct 10 into the inside of the burner cylinder 11, accelerating the combustion of the fuel inside the burner cylinder 11 so that the combustion generates a flame that sprays out from the flame nozzle 13. Then, the hydraulic press 4 is started, and the hydraulic press 4 starts to work. The output end of the hydraulic press 4 penetrates into the inside of the hydraulic hole 5 and is fixedly connected to the lifting plate 6. The output end of the hydraulic press 4 drives the lifting plate 6 to move upward, thereby raising the height of the burner cylinder 11 from the ground, enabling the flame sprayed out by the flame nozzle 13 to heat objects at different heights. When it is necessary to rotate the angle of the burner cylinder 11, the motor 7 is started, and the motor 7 starts to work. The output end of the motor 7 is fixedly connected to the turntable 8, and the upper surface of the turntable 8 is fixedly connected to the burner cylinder 11. By driving the rotation of the turntable 8 by the output end of the motor 7, the rotation of the burner cylinder 11 is driven, adjusting the angle of the flame sprayed out by the flame nozzle 13 of the burner cylinder 11, facilitating the staff to heat objects at different angles, and preventing the staff's hands from directly contacting the burner cylinder 11, preventing the staff's hands from being scalded. Through the above operations, the effects of enabling the burner to automatically turn and having a good combustion effect of the burner are achieved. The filler funnel 15 facilitates the staff to add fuel into the inside of the burner cylinder 11. The ignition hole 16 facilitates the staff to ignite the added fuel inside the burner cylinder 11. After the fuel is ignited, the lid 18 is covered to prevent the flame from escaping from the cylinder wall of the burner cylinder 11. The two windproof plates 19 prevent the backflow of the air blown out from the air duct 10. The heat insulation layer 20 made of aerogel material reduces the temperature on the surface of the burner cylinder 11, preventing the staff from being scalded accidentally when contacting the burner cylinder 11. By pulling or pressing the adjustment knob 23, the adjustment rod 24 drives the expansion and contraction of the folding mesh eye mask 22, thereby changing the spacing of the mesh holes of the folding mesh eye mask 22. Thus, when the flame passes through the folding mesh eye mask 22 and sprays out, the size of the flame is changed. The storage box 25 facilitates the placement of the combustion improver 26. The combustion improver 26 is added into the fuel inside the burner cylinder 11 through the ignition hole 16 to make the fuel burn fully. The staff pulls the pull ring 27 to drive the scraping rod 28 to move, and the scraping rod 28 scrapes the ash after the fuel burns through the scraping plate 29 through the ash outlet hole 30, preventing the ash from accumulating inside the burner cylinder 11. The motor 7 generates a large amount of heat during operation, and the four fans 31 blow air to dissipate heat for the motor 7. When the staff pushes the push rod 2 to move the car plate 1, the anti-collision sponge 32 prevents the staff's feet from directly contacting the car plate 1, preventing the staff's feet from being bruised.

[0039] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pure oxygen low-quality fuel burner, comprising a vehicle plate (1), characterized in that: A push rod (2) is fixedly connected to the outside of the car board (1). A hydraulic tank (3) is fixedly connected to the upper surface of the car board (1). A hydraulic press (4) is fixedly connected to the inside of the hydraulic tank (3). A hydraulic hole (5) is opened in the inside of the hydraulic tank (3). A lifting plate (6) is arranged outside the car board (1). The output end of the hydraulic press (4) penetrates into the inside of the hydraulic hole (5) and is fixedly connected to the lifting plate (6). A motor (7) is fixedly connected to the upper surface of the lifting plate (6). A turntable (8) is arranged outside the lifting plate (6). The output end of the motor (7) is fixedly connected to the turntable (8). A blower (9) is fixedly connected to the upper surface of the turntable (8). An air duct (10) is fixedly connected to the outside of the blower (9). A burner cylinder (11) is fixedly connected to the upper surface of the turntable (8). An air outlet (12) is opened in the inside of the burner cylinder (11). The air duct (10) is inserted into the air outlet (12). A flame nozzle (13) is fixedly connected to the outside of the burner cylinder (11). Wheels (33) are arranged at the bottom of the car board (1).

2. The pure oxygen low-quality fuel burner according to claim 1, wherein: A fuel inlet (14) is opened in the inside of the burner cylinder (11). A stuffing funnel (15) is fixedly connected to the outside of the fuel inlet (14).

3. The pure oxygen low-quality fuel burner according to claim 1, characterized in that: An ignition hole (16) is opened in the inside of the burner cylinder (11). A hinge (17) is hinged to the outside of the ignition hole (16). A lid (18) is hinged to the outside of the hinge (17).

4. A pure oxygen low-quality fuel burner according to claim 1, characterized in that: A windproof plate (19) is fixedly connected to the outside of the air outlet (12). The number of the windproof plates (19) is two.

5. The pure oxygen low-quality fuel burner according to claim 1, characterized in that: A heat insulation layer (20) is arranged outside the burner cylinder (11). The material of the heat insulation layer (20) is aerogel.

6. The pure oxygen low-quality fuel burner according to claim 1, wherein: An adjustment hole (21) is opened in the inside of the flame nozzle (13). A folding mesh eye shield (22) is arranged in the inside of the flame nozzle (13). An adjustment knob (23) is arranged outside the flame nozzle (13). The bottom of the adjustment knob (23) is fixedly connected to an adjustment rod (24). The adjustment rod (24) penetrates into the inside of the adjustment hole (21) and is fixedly connected to the folding mesh eye shield (22).

7. The pure oxygen low-quality fuel burner according to claim 1, characterized in that: A storage box (25) is fixedly connected to the upper surface of the turntable (8). A combustion improver (26) is arranged in the inside of the storage box (25).

8. A pure oxygen low-quality fuel burner according to claim 1, characterized in that: A pull ring (27) is arranged outside the burner cylinder (11). A scraping rod (28) is fixedly connected to the outside of the pull ring (27). A scraping plate (29) is arranged in the inside of the burner cylinder (11). The scraping rod (28) penetrates into the inside of the air outlet (12) and is fixedly connected to the scraping plate (29). An ash outlet (30) is opened in the inside of the burner cylinder (11).

9. The pure oxygen low-quality fuel burner according to claim 1, wherein: Fans (31) are fixedly connected to the outside of the lifting plate (6). The number of the fans (31) is four.

10. A pure oxygen low-quality fuel burner according to claim 1, characterized in that: An anti-collision sponge (32) is fixedly connected to the outside of the car board (1). The distances between every two of the anti-collision sponges (32) are equal.

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