Wheeled tractor with chassis convenient to overhaul

Abstract

The invention discloses a wheeled tractor with a chassis convenient to overhaul, and relates to the technical field of wheeled tractors. The tractor comprises a tractor body and a chassis body, the tractor body is arranged above the chassis body, a bottom cover is fixed to the bottom of the chassis body through bolts, a protection device is arranged at the bottom of the bottom cover, the protection device comprises a first double-shaft motor, and the first double-shaft motor is fixed to the rear side of the bottom cover through a support. Screw rods are fixed to the output ends of the two sides of the first double-shaft motor. Through the arrangement of the mud removing device, the bottom cover, a second double-shaft motor, a reciprocating lead screw and a threaded block are matched to drive a scraping plate to scrape mud attached to the bottom cover, when the bottom cover is disassembled, if the mud is accumulated around a bolt, the resistance and complexity during disassembly can be increased, and even an additional tool is needed for cleaning, the mud is firstly removed through the mud removing device, and then the mud is removed through the mud removing device; and the bolt dismounting work of the bottom cover can be smoother and quicker.

Description

Technical Field

[0001] The invention relates to the technical field of wheeled tractors, in particular to a wheeled tractor with a chassis that is easy to inspect and maintain. Background Art

[0002] Wheeled tractors are a type of machinery commonly used in agricultural production. They are mainly powered by wheels and are suitable for field operations such as ploughing, sowing, and fertilizing. They have a relatively simple structure and strong flexibility, and can operate on different terrains. Compared with crawler tractors, wheeled tractors have higher travel speeds and lower soil compaction, and are suitable for relatively flat farmland.

[0003] The Chinese patent with patent announcement number CN219467844U discloses a high-strength chassis for wheeled tractors, including a chassis, a plurality of fixed frames are symmetrically fixedly connected on the upper side of the chassis, a plurality of mounting plates are provided on the upper side of the chassis, a plurality of mounting holes are provided on the upper side of the plurality of mounting plates, a plurality of threaded holes are provided on the inner side walls of the plurality of fixed frames, a plurality of threaded holes are provided in the threaded sleeves in the threaded holes, the threaded rods are penetrated through the threaded holes, the threaded rods are penetrated through the mounting holes, a fixing ring is provided on the outer side of the threaded rod, the fixing ring is contacted and connected with the mounting plate, a nut is also threadedly provided on the outer side of the threaded rod, the nut is located on the outer side of the fixing frame and is contacted and connected with the fixing frame. The patent completes the reinforcement operation of the entire chassis by cooperating with a plurality of mounting plates, thereby improving the strength of the entire chassis, and finally can adapt to the high-strength working conditions of wheeled tractors, is simple to install and disassemble, and has a good use effect.

[0004] However, the current tractors have the following problems: during the long-term use of the tractor, the bolts and nuts of the tractor chassis are easily affected by the external environment, such as moisture, dirt, etc. These factors may cause corrosion and aging of the bolts and nuts, making the tractor chassis stuck and difficult to disassemble when disassembling. Therefore, we propose a wheeled tractor with an easy-to-maintain chassis. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a wheeled tractor with a chassis that is easy to repair, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wheeled tractor with an easy-to-maintain chassis, comprising a tractor body and a chassis body, wherein the tractor body is arranged above the chassis body, a bottom cover is fixed to the bottom of the chassis body by bolts, a protective device is arranged at the bottom of the bottom cover, the protective device comprises a dual-axis motor 1, the dual-axis motor 1 is fixed to the rear side of the bottom cover by a bracket, screws are fixed to the output ends of both sides of the dual-axis motor 1, the outer sides of the two screws are threadedly connected with L-shaped plates, and the L-shaped plates are slidably installed on the rear side of the bottom cover, the front sides of the two L-shaped plates are fixed with side protective plates, and the two sides of the bottom cover are provided with side protective plates for accommodating side The side guard plate has a receiving groove, and the front sides of the two side guard plates are fixed with plug rods, and the plug rods penetrate the outer wall of the bottom cover, and the two side guard plates are fixed with side rubber plates on the sides away from each other, and the top of the side rubber plate protrudes five centimeters from the top of the side guard plate, and the side rubber plate is in contact with the outer wall of the bottom cover, and the bottom of the bottom cover is provided with a mud removal device for cleaning mud at the bottom of the bottom cover, and the inner front side of the bottom cover is provided with an anti-stuck seam device for preventing mud from entering the bottom cover receiving groove, and the side guard plates form protection at the bolts of the bottom cover, and at the same time, the side guard plates drive the side rubber plates to be close to the outer wall of the bottom cover, and the side rubber plates can seal the gap between the side guard plates and the bottom cover.

[0007] According to the above technical solution, the mud removal device includes a double-axis motor 2, which is fixed to the rear side of the bottom cover through a bracket, and reciprocating screws are fixed to the output ends on both sides of the double-axis motor 2, and the outer parts of the two reciprocating screws are threadedly connected to threaded blocks, and the threaded blocks are slidably installed on the bottom of the bottom cover, and scrapers are fixed to the front sides of the two threaded blocks, and the two scrapers are in contact with the bottom of the bottom cover. When mud adheres to the bottom of the bottom cover, before starting the double-axis motor 1, start the double-axis motor 2 to rotate first, and the output end of the double-axis motor 2 drives the reciprocating screw to rotate, and the reciprocating screw drives the threaded block to push the scraper to move back and forth on the bottom surface of the bottom cover, so that the scraper scrapes off the mud adhered to the bottom cover.

[0008] According to the above technical solution, the mud removal device also includes two L-shaped slides, two connecting rods, and several triangular push rods. The two L-shaped slides are respectively slidably installed on the bottom of the threaded block, the two connecting rods are respectively fixed on the front sides of the two L-shaped slides, and several triangular push rods are respectively and evenly fixed on the bottom of the two connecting rods. The connecting rods are slidably installed on the outer wall of the scraper, and the triangular push rods are in contact with the outer wall of the scraper. At the same time, the design of the triangular push rods can effectively increase the contact area between the scraper and the surface of the bottom cover, so that the scraper can more thoroughly scrape off the attached impurities when cleaning the mud on the surface of the bottom cover.

[0009] According to the above technical solution, the rear side of the bottom cover is fixedly connected to a wavy groove plate through a bracket, and a wavy groove is opened at the bottom of the wavy groove plate, and L-shaped column rods are fixed to the bottoms of the two L-shaped slides, and the end of the L-shaped column rod away from the L-shaped slide plate is slidably installed inside the wavy groove of the wavy groove plate, and when the threaded block moves, the L-shaped column rod is driven to move along with it through the L-shaped slide plate. Under the limitation of the wavy groove of the wavy groove plate, the wavy groove of the wavy groove plate pushes the L-shaped column rod to drive the L-shaped slide plate to reciprocate along the bottom of the threaded block, and the L-shaped slide plate pushes the connecting rod to drive the triangular push rod to reciprocate, and the triangular push rod scrapes the surface of the scraper.

[0010] According to the above technical scheme, the anti-stuck seam device includes two fixed plates, two folding capsules, two hollow plates, four folding tubes, two side nozzle plates, and four positioning rods. The two fixed plates are respectively fixed on both sides of the inner wall of the bottom cover, the two folding capsules are respectively fixed on the side where the two fixed plates are close to each other, the two hollow plates are respectively fixed on the side where the two folding capsules are close to each other, and the hollow plate is fixed to one end of the insertion rod close to the center of the bottom cover, the four folding tubes are respectively fixed on the side where the two fixed plates are away from each other, and the folding tubes pass through the inner wall of the bottom cover, the two side nozzle plates are respectively fixed on the side where the two folding tubes are away from the fixed plates, and an open groove for accommodating the side nozzle plates is provided on the side where the side guard plates are close to the bottom cover, the four positioning rods respectively pass through the side where the two side guard plates are away from each other, the positioning rods are fixed at the outer wall of the side nozzle plate, and the positioning rods are fixed to the outer wall of the side guard plates. The foldable bag is provided with a spring, and the side nozzle plate is connected with the inside of the foldable bag through a folding tube. The nozzle of the side nozzle plate is a one-way air outlet setting. The hollow plate is connected with the inside of the foldable bag, and the front side of the hollow plate is provided with an air inlet nozzle for controlling the one-way air intake of the foldable bag. When the side guard plate moves away from the bottom cover, the side guard plate will drive the insertion rod to move along, and the insertion rod drives the hollow plate to squeeze the foldable bag, and the air in the foldable bag is transmitted to the side nozzle plate through the folding tube and discharged. The air sprayed from the side nozzle plate has a strong airflow, so that the soil and impurities in the gap between the side guard plate and the bottom cover can be effectively blown away. When the side guard plate moves away from the bottom cover, under the action of the spring elastic force corresponding to the positioning rod, the positioning rod will push the side nozzle plate to stick to the outer wall of the bottom cover first, and as the side guard plate drives the positioning rod to continue to move, the side guard plate will drive the side nozzle plate away from the bottom cover through the positioning rod.

[0011] The present invention provides a wheeled tractor with a chassis that is easy to repair. It has the following beneficial effects: (1) The present invention provides a protective device so that the side protective plates can form protection at the bolts of the bottom cover. The side protective plates can effectively shield and protect the bolts of the bottom cover from external moisture, dirt, chemicals, etc., and prevent the bolts of the bottom cover from rusting or corroding, thereby ensuring that the bolts of the bottom cover can be smoothly removed and reinstalled during the inspection and maintenance of the chassis body, avoiding the problem of additional treatment required due to rust or jamming of the bolts of the bottom cover, thereby simplifying the inspection and maintenance process and improving maintenance efficiency. At the same time, the side protective plates drive the side rubber plates to cling to the outer wall of the bottom cover, and the side rubber plates can seal the gap between the side protective plates and the bottom cover, effectively blocking the intrusion of external substances such as water vapor, dust, mud, etc., thereby preventing corrosive substances such as water vapor from entering the bolts and reducing the risk of the bolts and other metal parts being damp, rusted or corroded.

[0012] (2) The present invention provides a mud removal device, so that the bottom cover, the second dual-axis motor, the reciprocating screw and the threaded block cooperate to drive the scraper to scrape off the mud adhered to the bottom cover. When disassembling the bottom cover, if the mud accumulates around the bolts, it will increase the resistance and complexity of disassembly, and even require additional tools to clean it. By removing the mud first through the mud removal device, the bolt disassembly work of the bottom cover can be smoother and faster, saving time and reducing the trouble during the disassembly process; at the same time, the design of the triangular push rod can effectively increase the contact area between the scraper and the surface of the bottom cover, so that the scraper can more thoroughly scrape off the attached impurities when cleaning the mud on the surface of the bottom cover. At the same time, the threaded block, the L-shaped slide plate, the L-shaped column rod, the wavy groove plate and the connecting rod cooperate to drive the triangular push rod to scrape the surface of the scraper, thereby preventing the mud from accumulating or clogging on the scraper. The triangular push rod can effectively discharge the mud from the scraper surface, maintain the working efficiency of the scraper and prevent the cleaning effect from decreasing.

[0013] (3) The present invention sets an anti-stuck seam device so that the side guard plate, the plug rod and the hollow plate cooperate to drive the air in the folding bag to be transmitted to the side nozzle plate through the folding tube for discharge. The air ejected from the side nozzle plate has a strong airflow, which can effectively blow away the dirt and impurities in the gap between the side guard plate and the bottom cover, avoid the accumulation of dirt in the gap, and reduce the interference of dirt on the equipment in subsequent work. At the same time, under the action of the spring force corresponding to the positioning rod, the positioning rod will push the side nozzle plate to stick to the outer wall of the bottom cover first. When the side nozzle plate is close to the outer wall of the bottom cover, the airflow can be concentrated in the gap between the side guard plate and the bottom cover to avoid the waste of airflow. This can more efficiently blow away the dirt and impurities in the gap, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is schematically shown as a whole Figure 1 ; Figure 2 The present invention is schematically shown as a whole Figure 2 ; Figure 3 It is a schematic diagram of the local structure of the present invention; Figure 4 is a schematic diagram of the protective device of the present invention; Figure 5 is a schematic diagram of a mud removal device of the present invention; Figure 6 Schematic diagram of the anti-stuck seam device of the present invention Figure 1 ; Figure 7 Schematic diagram of the anti-stuck seam device of the present invention Figure 2 ; Figure 8 It is a schematic diagram of the partial structure of the mud removal device of the present invention.

[0015] In the figure: 1. tractor body; 2. chassis body; 21. bottom cover; 3. protective device; 31. double-axis motor one; 32. screw; 33. L-shaped plate; 34. side protective plate; 35. plug rod; 36. side rubber plate; 4. mud removal device; 41. double-axis motor two; 42. threaded block; 43. reciprocating screw rod; 44. scraper; 45. wave-shaped groove plate; 46. L-shaped column rod; 47. L-shaped slide plate; 48. connecting rod; 49. triangular push rod; 5. anti-stuck seam device; 51. fixing plate; 52. folding bag; 53. hollow plate; 54. folding tube; 55. side nozzle plate; 56. positioning rod. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] See also Figure 1 - Figure 8One embodiment of the present invention is: a wheeled tractor with a chassis that is easy to repair, comprising a tractor body 1 and a chassis body 2, the tractor body 1 is arranged above the chassis body 2, a bottom cover 21 is fixed to the bottom of the chassis body 2 by bolts, a protective device 3 is arranged at the bottom of the bottom cover 21, the protective device 3 comprises a dual-axis motor 31, the dual-axis motor 31 is fixed to the rear side of the bottom cover 21 by a bracket, screws 32 are fixed to both sides of the output end of the dual-axis motor 31, and the outer sides of the two screws 32 are threadedly connected with L-shaped plates 33, and the L-shaped plate 33 is slidably mounted on the rear side of the bottom cover 21, the front sides of the two L-shaped plates 33 are fixed with side protection plates 34, and the two sides of the bottom cover 21 are provided with accommodating grooves for accommodating the side protection plates 34, the front sides of the two side protection plates 34 are fixed with insertion rods 35, and the insertion rods 35 penetrate the outer wall of the bottom cover 21, and the sides of the two side protection plates 34 away from each other are fixed with side rubber plates 36, the top of the side rubber plates 36 protrudes five centimeters from the top of the side protection plates 34, and the side rubber plates 36 and the bottom cover 21 are fixed. The bottom of the bottom cover 21 is in contact with the outer wall, and a mud removal device 4 for cleaning the mud at the bottom of the bottom cover 21 is provided at the bottom, and an anti-stuck seam device 5 for preventing mud from entering the bottom cover 21 receiving groove is provided on the inner front side of the bottom cover 21. Through the arrangement of the above structure, the side guard plate 34 forms protection at the bolts of the bottom cover 21, and the side guard plate 34 can effectively shield and protect the bolts of the bottom cover 21 from external moisture, mud, chemicals, etc., and prevent the bolts of the bottom cover 21 from rusting or corrosion, thereby ensuring that during the inspection and maintenance of the chassis body 2, the bolts of the bottom cover 21 can be smoothly disassembled and reinstalled, avoiding the problem of additional treatment required due to rust or jamming of the bolts of the bottom cover 21, thereby simplifying the inspection and maintenance process and improving maintenance efficiency. At the same time, through the arrangement of the above structure, the side rubber plate 36 can seal the gap between the side guard plate 34 and the bottom cover 21, effectively blocking the invasion of external substances such as water vapor, dust, mud, etc., so as to prevent corrosive substances such as water vapor from entering the bolts, and reduce the risk of moisture, rust or corrosion of the bolts and other metal parts.

[0018] The mud removing device 4 includes a double-axis motor 41, which is fixed to the rear side of the bottom cover 21 through a bracket. Reciprocating screws 43 are fixed to the output ends of both sides of the double-axis motor 41. The outer parts of the two reciprocating screws 43 are threadedly connected to threaded blocks 42, and the threaded blocks 42 are slidably installed on the bottom of the bottom cover 21. Scrapers 44 are fixed to the front sides of the two threaded blocks 42, and the two scrapers 44 are in contact with the bottom of the bottom cover 21. Through the arrangement of the above structure, the scrapers 44 scrape off the mud adhered to the bottom cover 21. When disassembling the bottom cover 21, if mud accumulates around the bolts, it will increase the resistance and complexity of disassembly, and even require additional tools to clean it. By removing the mud first through the mud removing device 4, the bolt disassembly work of the bottom cover 21 can be smoother and faster, saving time and reducing the trouble during the disassembly process.

[0019] The mud removal device 4 also includes two L-shaped slides 47, two connecting rods 48, and several triangular push rods 49. The two L-shaped slides 47 are respectively slidably installed on the bottom of the threaded block 42, and the two connecting rods 48 are respectively fixed on the front sides of the two L-shaped slides 47. Several triangular push rods 49 are respectively evenly and equidistantly fixed on the bottom of the two connecting rods 48. The connecting rod 48 is slidably installed on the outer wall of the scraper 44, and the triangular push rods 49 are in contact with the outer wall of the scraper 44. Through the design of the triangular push rods 49, the triangular top and both sides of the triangular push rods 49 will form multiple points of contact. The multiple contact points expand the contact area between the scraper 44 and the surface of the bottom cover 21. Compared with the traditional scraper 44 plane or single contact point, the setting of multiple triangular push rods 49 enables the scraper 44 to contact with the surface of the bottom cover 21 in multiple areas at the same time, thereby effectively increasing the contact area between the scraper 44 and the surface of the bottom cover 21, so that the scraper 44 can more thoroughly scrape off the attached impurities when cleaning the mud on the surface of the bottom cover 21.

[0020] The rear side of the bottom cover 21 is fixedly connected to a wavy groove plate 45 through a bracket. A wavy groove is opened at the bottom of the wavy groove plate 45. L-shaped column rods 46 are fixed to the bottoms of the two L-shaped slides 47. The ends of the L-shaped column rods 46 away from the L-shaped slides 47 are slidably installed inside the wavy groove of the wavy groove plate 45. Through the arrangement of the above structure, the L-shaped slide 47 pushes the connecting rod 48 to drive the triangular push rod 49 to move back and forth. The triangular push rod 49 scrapes the surface of the scraper 44, thereby preventing mud from accumulating or clogging on the scraper 44. The triangular push rod 49 can effectively discharge mud from the surface of the scraper 44, maintain the working efficiency of the scraper 44, and prevent the cleaning effect from decreasing.

[0021] When in use, the side protection plate 34 forms a protection at the bolt of the bottom cover 21 (such as Figure 4As shown in the figure, the side guard plates 34 can effectively shield and protect the bolts of the bottom cover 21 from external moisture, dirt, chemicals, etc., and prevent the bolts of the bottom cover 21 from rusting or corroding, thereby ensuring that the bolts of the bottom cover 21 can be smoothly removed and reinstalled during the inspection and repair of the chassis body 2, avoiding the problem of additional treatment required due to rust or jamming of the bolts of the bottom cover 21, thereby simplifying the inspection and repair process and improving maintenance efficiency. At the same time, the side guard plates 34 drive the side rubber plates 36 to be close to the outer wall of the bottom cover 21, and the side rubber plates 36 can seal the gap between the side guard plates 34 and the bottom cover 21, which is effective. It can effectively block the intrusion of external substances such as water vapor, dust, mud, etc., so as to prevent corrosive substances such as water vapor from entering the bolts, and reduce the risk of moisture, rust or corrosion of bolts and other metal parts. It is worth noting that when it is necessary to remove the bottom cover 21 to inspect the chassis body 2, start the dual-axis motor 31, and the output end of the dual-axis motor 31 drives the screw 32 to rotate, and the screw 32 drives the L-shaped plate 33 to push the side protection plate 34 to move away from the bottom cover 21. At this time, the side protection plate 34 does not form protection at the bolts of the bottom cover 21. At this time, the staff can remove the bolts of the bottom cover 21.

[0022] When mud adheres to the bottom of the bottom cover 21, before starting the dual-axis motor 1 31, first start the dual-axis motor 2 41 to rotate, and the output end of the dual-axis motor 2 41 drives the reciprocating screw 43 to rotate, and the reciprocating screw 43 drives the threaded block 42 to push the scraper 44 to move back and forth on the bottom surface of the bottom cover 21, so that the scraper 44 scrapes off the mud adhered to the bottom cover 21. When disassembling the bottom cover 21, if mud accumulates around the bolts, it will increase the resistance and complexity of disassembly, and even require additional tools to clean it. By removing the mud first through the mud removal device 4, the bolt disassembly work of the bottom cover 21 can be smoother and faster, saving time and reducing the trouble during the disassembly process; at the same time, the design of the triangular push rod 49 can effectively increase the contact between the scraper 44 and the surface of the bottom cover 21 The contact area between them enables the scraper 44 to more thoroughly scrape off the attached impurities when cleaning the dirt on the surface of the bottom cover 21, and when the threaded block 42 moves, the L-shaped slide plate 47 will drive the L-shaped column 46 to move along. Under the restriction of the wavy groove of the wavy groove plate 45, the wavy groove of the wavy groove plate 45 pushes the L-shaped column 46 to drive the L-shaped slide plate 47 to reciprocate along the bottom of the threaded block 42, and the L-shaped slide plate 47 pushes the connecting rod 48 to drive the triangular push rod 49 to reciprocate. The triangular push rod 49 scrapes the surface of the scraper 44, thereby preventing dirt from accumulating or clogging on the scraper 44. The triangular push rod 49 can effectively discharge dirt from the surface of the scraper 44, maintain the working efficiency of the scraper 44, and prevent the cleaning effect from decreasing.

[0023] See also Figure 1 - Figure 8On the basis of the above embodiment, in another embodiment of the present invention, the anti-stuck seam device 5 includes two fixed plates 51, two folding capsules 52, two hollow plates 53, four folding tubes 54, two side nozzle plates 55, and four positioning rods 56. The two fixed plates 51 are respectively fixed to the inner wall of the bottom cover 21 on both sides, the two folding capsules 52 are respectively fixed to the sides of the two fixed plates 51 close to each other, the two hollow plates 53 are respectively fixed to the sides of the two folding capsules 52 close to each other, and the hollow plate 53 is fixed to one end of the insertion rod 35 close to the center of the bottom cover 21, and the four folding tubes 54 are respectively fixed to the inner wall of the bottom cover 21 on both sides, and the two folding capsules 52 are respectively fixed to the sides of the two fixed plates 51 close to each other. The side nozzle plates 55 are fixed on the side away from the two fixing plates 51, and the folding tube 54 passes through the inner wall of the bottom cover 21. The two side nozzle plates 55 are respectively fixed on the side away from the fixing plate 51 of the two folding tubes 54. The side protection plate 34 close to the bottom cover 21 is provided with an opening groove for accommodating the side nozzle plates 55. Four positioning rods 56 respectively pass through the side away from the two side protection plates 34. The positioning rods 56 are fixed on the outer wall of the side nozzle plates 55, and a spring is provided between the positioning rods 56 and the outer wall of the side protection plate 34. The side nozzle plates 55 are connected to the folding capsule 55 through the folding tubes 54. 2 is connected to the inside of the side protection plate 34, the nozzle of the side nozzle plate 55 is a one-way air outlet setting, the hollow plate 53 is connected to the inside of the folding bag 52, and the front side of the hollow plate 53 is provided with an air inlet nozzle for controlling the one-way air intake of the folding bag 52. Through the setting of the above structure, after the side nozzle plate 55 moves out of the opening slot of the side protection plate 34, the air in the folding bag 52 is transmitted to the side nozzle plate 55 through the folding pipe 54 and discharged. The air ejected from the side nozzle plate 55 has a strong airflow, so that the soil and impurities in the gap between the side protection plate 34 and the bottom cover 21 can be effectively blown away, avoiding the soil and impurities in the gap between the side protection plate 34 and the bottom cover 21. The dirt accumulates in the gap, reducing the interference of the dirt on the equipment in subsequent work. At the same time, through the setting of the above-mentioned structure, under the action of the spring force corresponding to the positioning rod 56, the positioning rod 56 will push the side nozzle plate 55 to stick to the outer wall of the bottom cover 21 first, and the side protection plate 34 will drive the side nozzle plate 55 away from the bottom cover 21 through the positioning rod 56. When the side nozzle plate 55 is close to the outer wall of the bottom cover 21, the airflow can be concentrated in the gap between the side protection plate 34 and the bottom cover 21 to avoid the waste of airflow, which can more efficiently blow away the dirt and impurities in the gap, thereby improving the cleaning effect.

[0024] When in use, when the side guard plate 34 moves away from the bottom cover 21, the side guard plate 34 will drive the insertion rod 35 to move along, and the insertion rod 35 will drive the hollow plate 53 to squeeze the folding bag 52, and the air in the folding bag 52 will be transmitted to the side nozzle plate 55 through the folding tube 54 for discharge. The air sprayed from the side nozzle plate 55 has a strong airflow, which can effectively blow away the soil and impurities in the gap between the side guard plate 34 and the bottom cover 21, avoid soil accumulation in the gap, and reduce the interference of soil on the equipment in subsequent work. It should be noted that when the side guard plate 34 moves away from the bottom cover 21, under the action of the spring force corresponding to the positioning rod 56, the positioning rod 56 will push the side nozzle plate 55 to stick to the bottom cover 21 first. , as the side guard plates 34 drive the positioning rods 56 to continue to move, the side guard plates 34 will drive the side nozzle plates 55 away from the bottom cover 21 through the positioning rods 56. When the side nozzle plates 55 are close to the outer wall of the bottom cover 21, the airflow can be concentrated in the gap between the side guard plates 34 and the bottom cover 21 to avoid the airflow from being wasted. This can more efficiently blow away the dirt and impurities in the gap, thereby improving the cleaning effect. It should also be noted that when the side guard plates 34 are reset to move toward the bottom cover 21, the side guard plates 34 will drive the positioning rods 56 to reset, and the positioning rods 56 will stretch and reset the folding bag 52 through the hollow plate 53. At this time, the one-way air inlet nozzle of the hollow plate 53 will replenish the internal air of the folding bag 52.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wheeled tractor with a chassis that is easy to repair, comprising a tractor body (1) and a chassis body (2), wherein the tractor body (1) is arranged above the chassis body (2), and a bottom cover (21) is fixed to the bottom of the chassis body (2) by bolts, characterized in that: A protective device (3) is provided at the bottom of the bottom cover (21), the protective device (3) comprising a dual-axis motor (31), the dual-axis motor (31) being fixed to the rear side of the bottom cover (21) via a bracket, screws (32) being fixed to both side output ends of the dual-axis motor (31), the exteriors of the two screws (32) being threadedly connected to L-shaped plates (33), and the L-shaped plates (33) being slidably mounted on the rear side of the bottom cover (21), the front sides of the two L-shaped plates (33) being fixed to side protective plates (34), the bottom cover (21 ) are provided with receiving grooves for receiving side protection plates (34), the front sides of the two side protection plates (34) are fixed with insertion rods (35), and the insertion rods (35) penetrate the outer wall of the bottom cover (21), and the sides of the two side protection plates (34) away from each other are fixed with side rubber plates (36), the bottom of the bottom cover (21) is provided with a mud removal device (4) for cleaning mud at the bottom of the bottom cover (21), and the inner front side of the bottom cover (21) is provided with an anti-stuck seam device (5) for preventing mud from entering the receiving groove of the bottom cover (21).

2. A wheeled tractor with a chassis that is easy to maintain according to claim 1, characterized in that: The top of the side rubber plate (36) protrudes five centimeters from the top of the side protection plate (34), and the side rubber plate (36) is in contact with the outer wall of the bottom cover (21).

3. A wheeled tractor with a chassis that is easy to maintain according to claim 1, characterized in that: The mud removal device (4) comprises a second double-axis motor (41), the second double-axis motor (41) being fixed to the rear side of the bottom cover (21) via a bracket, reciprocating screws (43) being fixed to both side output ends of the second double-axis motor (41), the exteriors of the two reciprocating screws (43) being threadedly connected to thread blocks (42), and the thread blocks (42) being slidably mounted on the bottom of the bottom cover (21), and scrapers (44) being fixed to the front sides of the two thread blocks (42).

4. A wheeled tractor with a chassis that is easy to maintain according to claim 3, characterized in that: The two scrapers (44) are both in contact with the bottom of the bottom cover (21).

5. A wheeled tractor with a chassis that is easy to maintain according to claim 1, characterized in that: The mud removal device (4) further comprises two L-shaped slide plates (47), two connecting rods (48), and a plurality of triangular push rods (49); the two L-shaped slide plates (47) are respectively slidably mounted on the bottom of the threaded block (42); the two connecting rods (48) are respectively fixed on the front sides of the two L-shaped slide plates (47); and the plurality of triangular push rods (49) are respectively evenly and equidistantly fixed on the bottom of the two connecting rods (48).

6. A wheeled tractor with a chassis that is easy to maintain according to claim 5, characterized in that: The connecting rod (48) is slidably mounted on the outer wall of the scraper (44), and the triangular push rod (49) is in contact with the outer wall of the scraper (44).

7. A wheeled tractor with a chassis that is easy to maintain according to claim 5, characterized in that: The rear side of the bottom cover (21) is fixedly connected to a wavy groove plate (45) via a bracket, the bottom of the wavy groove plate (45) is provided with a wavy groove, and the bottoms of the two L-shaped slide plates (47) are both fixed with L-shaped column rods (46), and one end of the L-shaped column rod (46) away from the L-shaped slide plate (47) is slidably mounted inside the wavy groove of the wavy groove plate (45).

8. The wheeled tractor with a chassis that is easy to maintain according to claim 1, characterized in that: The anti-stuck seam device (5) comprises two fixed plates (51), two folding capsules (52), two hollow plates (53), four folding tubes (54), two side nozzle plates (55), and four positioning rods (56). The two fixed plates (51) are respectively fixed to the two sides of the inner wall of the bottom cover (21). The two folding capsules (52) are respectively fixed to the sides of the two fixed plates (51) close to each other. The two hollow plates (53) are respectively fixed to the sides of the two folding capsules (52) close to each other. The hollow plate (53) is fixed to one end of the insertion rod (35) close to the center of the bottom cover (21). The four folding tubes (54) are respectively fixed to the sides of the two folding capsules (52). The side nozzle plates (55) are fixed to the sides of the two fixed plates (51) away from each other, and the folding tube (54) passes through the inner wall of the bottom cover (21). The two side nozzle plates (55) are fixed to the sides of the two folding tubes (54) away from the fixed plate (51). An opening groove for accommodating the side nozzle plates (55) is provided on the side of the side protection plate (34) close to the bottom cover (21). The four positioning rods (56) pass through the sides of the two side protection plates (34) away from each other. The positioning rods (56) are fixed to the outer wall of the side nozzle plate (55), and a spring is provided between the positioning rods (56) and the outer wall of the side protection plate (34).

9. A wheeled tractor with a chassis that is easy to maintain according to claim 8, characterized in that: The side nozzle plate (55) is connected to the interior of the folding bag (52) via the folding tube (54).

10. A wheeled tractor with a chassis that is easy to maintain according to claim 8, characterized in that: The nozzle of the side nozzle plate (55) is arranged for one-way air outlet, the hollow plate (53) is connected to the interior of the folding bag (52), and an air inlet nozzle for controlling one-way air intake of the folding bag (52) is arranged on the front side of the hollow plate (53).

Images