A new type of crawler tractor

Abstract

The present invention relates to the field of agricultural tractor equipment, and discloses a new crawler tractor, including a tractor body, a machine head is provided on the front side of the top of the tractor body, a machine base is provided in the middle of the top of the tractor body, a seat is provided in the middle of the machine base, and a bracket located on one side of the seat is provided on the top of the machine base. The new crawler tractor, through the overall structural design of the positioning column and the sliding sleeve inside the distributor box, is convenient for operators to control the lifting, stable holding, and lowering of agricultural implements on the lifting arm, and cancels the main control valve, one-way valve, oil return valve, and lowering speed regulating valve in the distributor of the existing lifter. While achieving the same function, the production cost is reduced, and the use of the operator is also convenient. In addition, by starting the oil pump only when controlling the lifting state of the agricultural implement, the driving energy consumption of the oil pump is reduced compared with the existing tractors.

Description

Technical Field

[0001] The invention relates to the field of agricultural tractor equipment, in particular to a novel crawler tractor. Background Art

[0002] Crawler tractors are commonly used in agricultural engineering machinery. The traveling device consists of guide wheels, follower wheels, supporting wheels, driving wheels and crawler tracks. When running, the driving wheel winds around the crawler tracks and moves in a circular motion, while the supporting wheels roll forward or backward on the crawler tracks. They are suitable for deep tillage operations in paddy fields, wet fields and dry fields.

[0003] Among them, the lifter is one of the necessary equipment for agricultural crawler tractors. By installing agricultural tools on the lifting arm on the lifter, it is convenient for operators to drive the tractor for agricultural work. The existing lifter controls the hydraulic oil through the oil pump to drive the lifting arm to rise, hold and fall.

[0004] However, in the existing crawler tractors, the distributor in the lifter is composed of a main control valve, a one-way valve, an oil return valve, a descending speed regulating valve and other structures, which are used in conjunction with each other. The production cost is high, the operation is complicated, which affects the operation of the operator, and the energy consumption of controlling the rising, holding and lowering actions of the lifting arm is large. Summary of the invention

[0005] In view of the shortcomings of the above-mentioned background technology, the present invention provides a new crawler tractor having the advantages of low cost and low energy consumption of a lifter for controlling the lifting, holding and lowering of agricultural implements, thereby solving the problems raised by the background technology.

[0006] The present invention provides the following technical solution: a novel crawler tractor comprises a tractor body, a machine head is arranged on the front side of the top of the tractor body, a machine base is arranged in the middle of the top of the tractor body, a seat is arranged in the middle of the machine base, a bracket is arranged on the top of the machine base and is located on one side of the seat, a baffle is fixedly installed on the top of the bracket, and the baffle is located directly above the seat, an oil tank is arranged on one side of the front of the machine base, an oil pump is fixedly arranged on the side of the oil tank, a distributor box is arranged on the front of the machine base and is located on one side of the oil tank, an oil pipe is connected between the distributor box and the oil pump, and the tractor A lift box is provided at the rear end of the top of the body, an oil cylinder is provided at the bottom of the inner cavity of the lift box, an oil pipeline is connected between the inner cavity of the oil cylinder and the inner cavity of the distributor box, a movable piston is movably provided in the inner cavity of the oil cylinder, and a movable push rod is fixedly connected to the middle of the side of the movable piston, one end of the movable push rod extends to the outside of the oil cylinder, the top of the inner cavity of the outer groove is movably sleeved with a rotating shaft located on one side of the oil cylinder, a rotating arm is fixedly sleeved on the rotating shaft, and the bottom end of the rotating arm is movably sleeved with one end of the moving push rod by a sleeve shaft, and both ends of the rotating shaft are fixedly sleeved with lifting arms located on both sides of the lift box;

[0007] A positioning column is provided in the middle of the inner cavity of the distributor box, and slide grooves are provided on both sides of the positioning column. An outer groove is provided in the middle of the top of the positioning column, and through holes are provided between the two ends of the outer groove and the slide grooves on both sides of the positioning column, respectively. An oil guide groove is provided at the bottom of the positioning column in the middle of the outer groove, and a blocking piston is provided in a movable sleeve in the slide groove, and a linkage rod is provided on the side of the blocking piston, and a passive piston located on the outside of the positioning column is provided at one end of the linkage rod. A sliding sleeve located on one side of the positioning column is provided inside the distributor box, and the sliding sleeve is provided with a A through slot is provided in the middle, and the through slot is movably sleeved with the passive piston. The sliding sleeve is provided with through openings located just above and just below the through slot. The top and top of the side of the positioning column are fixedly connected with a positioning shaft. One end of the positioning shaft passes through the through opening and is fixedly connected with a blocking block located on one side of the sliding sleeve. The positioning shaft is movably sleeved with a second spring located between the sliding sleeve and the positioning column. The middle part of the side of the distributor box is movably sleeved with a limit rod, and the limit rod is fixedly sleeved with a baffle located inside the distributor box. The side of the baffle is fixedly connected A third spring is provided, the third spring is movably sleeved on the limit rod, and one end of the third spring is fixedly connected to the side wall of the inner cavity of the distributor box, one end of the limit rod is movably connected to the side of the blocking piston, the other end of the limit rod extends to the outside of the distributor box and is fixedly connected to a push shaft, a limiting plate is provided on the side of the distributor box, a limiting shaft is provided on the top of the limiting plate, a rotating plate is movably sleeved on the limiting shaft, the bottom end of the rotating plate is movably sleeved with one end of the push shaft, and the bottom of the inner cavity of the distributor box is connected to a The oil delivery pipe, one end of the oil delivery pipe is connected to the inner cavity of the oil pump, the bottom of the inner cavity of the distributor box is connected to an oil drain pipe located in the middle of the positioning column, and the inner cavity of the oil drain pipe is connected to the oil guide groove, one end of the oil drain pipe is connected to the inner cavity of the oil tank, the bottom of the inner cavity of the distributor box is connected to an oil guide pipe located on the other side of the positioning column, one end of the oil guide pipe is connected to the inner cavity of the oil cylinder, a first spring is fixedly connected to the side of the blocking piston, the first spring is movably mounted on the linkage rod, and one end of the first spring is fixedly connected to the side wall of the inner cavity of the slide groove.

[0008] Preferably, the elastic force of the first spring is smaller than the elastic force of the third spring, and the blocking piston is normally located at the through hole between the outer groove and the sliding groove.

[0009] Preferably, the elastic force of the first spring is smaller than the elastic force of the third spring, and the blocking piston is normally located at the through hole between the outer groove and the slide groove.

[0010] Preferably, a movable sealing structure is provided between the side surface of the distributor box and the limiting rod, and between the linkage rod and the inner wall of the positioning column.

[0011] The present invention has the following beneficial effects:

[0012] The novel crawler tractor, through the overall structural design of the positioning column and the sliding sleeve inside the distributor box, is convenient for the operator to control the lifting, stabilizing and lowering of the agricultural implements on the lifting arm, and eliminates the use of the main control valve, one-way valve, oil return valve, lowering speed regulating valve and other structures in the distributor of the existing lifter. While achieving the same functions, it reduces the production cost and is convenient for the operator to use. Moreover, by starting the oil pump only when controlling the lifting state of the agricultural implement, the driving energy consumption of the oil pump is reduced compared with the existing tractors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 For the present invention Figure 1 Structural distributor box cutaway view;

[0015] Figure 3 For the present invention Figure 2 Side view of the structural sliding sleeve;

[0016] Figure 4 For the present invention Figure 1 Structural riser box cutaway.

[0017] In the figure: 1, tractor body; 2, machine head; 201, first spring; 3, machine base; 4, seat; 5, bracket; 6, shield; 7, oil tank; 8, oil pump; 9, distributor box; 901, oil pipeline; 902, oil discharge pipe; 903, oil guide pipe; 10, lifter box; 11, oil cylinder; 12, moving piston; 13, moving push rod; 14, rotating arm; 15, rotating shaft; 16, lifting arm; 1 7. Positioning column; 18. Slide groove; 19. Outer groove; 20. Blocking piston; 21. Linking rod; 22. Passive piston; 23. Positioning shaft; 24. Blocking block; 25. Second spring; 26. Sliding sleeve; 261. Through port; 27. Through groove; 28. Limit rod; 29. ​​Baffle; 30. Third spring; 31. Limiting plate; 32. Limiting shaft; 33. Rotating plate; 34. Push shaft; 35. Oil guide groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-4A novel crawler tractor comprises a tractor body 1, a machine head 2 is arranged on the front side of the top of the tractor body 1, a machine base 3 is arranged in the middle of the top of the tractor body 1, a seat 4 is arranged in the middle of the machine base 3, a bracket 5 is arranged on the top of the machine base 3 and is located on one side of the seat 4, a shield 6 is fixedly installed on the top of the bracket 5, and the shield 6 is located directly above the seat 4, an oil tank 7 is arranged on one side of the front of the machine base 3, an oil pump 8 is fixedly installed on the side of the oil tank 7, a distributor box 9 is fixedly installed on the front of the machine base 3 and is located on one side of the oil tank 7, an oil pipe is connected between the distributor box 9 and the oil pump 8, a lift box 10 is arranged at the rear end of the top of the tractor body 1, and a bottom of the inner cavity of the lift box 10 is fixedly installed An oil cylinder 11 is installed, and an oil pipeline 901 is connected between the inner cavity of the oil cylinder 11 and the inner cavity of the distributor box 9. The inner cavity of the oil cylinder 11 is movably sleeved with a movable piston 12, and a movable push rod 13 is fixedly connected to the middle part of the side of the movable piston 12, and one end of the movable push rod 13 extends to the outside of the oil cylinder 11. The top of the inner cavity of the outer groove 19 is movably sleeved with a rotating shaft 15 located on one side of the oil cylinder 11, and a rotating arm 14 is fixedly sleeved on the rotating shaft 15, and the bottom end of the rotating arm 14 and one end of the moving push rod 13 are movably sleeved with a sleeve shaft, and both ends of the rotating shaft 15 are fixedly sleeved with lifting arms 16 located on both sides of the lift box 10, and plows and other equipment are installed through the lifting arms 16.

[0020] A positioning column 17 is fixedly sleeved in the middle of the inner cavity of the distributor box 9, and slide grooves 18 are provided on both sides of the positioning column 17. An outer groove 19 is provided in the middle of the top of the positioning column 17, and through holes are provided at both ends of the outer groove 19 and the slide grooves 18 on both sides of the positioning column 17. An oil guide groove (35) located in the middle of the outer groove 19 is provided at the bottom of the positioning column 17. A blocking piston 20 is movably sleeved in the slide groove 18 on the left side of the positioning column 17, and a linkage rod 21 is fixedly connected to the side of the blocking piston 20. One end of the linkage rod 21 passes through another slide groove 18 and is fixedly connected to a passive piston 22 located on the outside of the positioning column 17. The internal movable sleeve of the distributor box 9 is provided with a sliding sleeve 26 located on one side of the positioning column 17, and a through groove 27 is provided in the middle of the sliding sleeve 26. The through groove 27 The sliding sleeve 26 is movably connected to the passive piston 22, and a through hole 261 is opened on the sliding sleeve 26, which is located just above and just below the through groove 27. The top and top of the side of the positioning column 17 are fixedly connected with the positioning shaft 23, and one end of the positioning shaft 23 passes through the through hole 261 and is fixedly connected with a blocking block 24 located on one side of the sliding sleeve 26. The positioning shaft 23 is movably sleeved with a second spring 25 located between the sliding sleeve 26 and the positioning column 17. The middle part of the side of the distributor box 9 is movably sleeved with a limit rod 28, and the limit rod 28 is fixedly sleeved with a baffle 29 located inside the distributor box 9. The side of the baffle 29 is fixedly connected with a third spring 30, and the third spring 30 is movably sleeved on the limit rod 28, and one end of the third spring 30 is fixedly connected to the side wall of the inner cavity of the distributor box 9. One end of the limit rod 28 is movably connected to the side of the blocking piston 20, and the other end of the limit rod 28 extends to the outside of the distributor box 9 and is fixedly connected to a push shaft 34. A limiting plate 31 is fixedly connected to the side of the distributor box 9. A limiting shaft 32 is fixedly sleeved on the top of the limiting plate 31, and a rotating plate 33 is movably sleeved on the limiting shaft 32. The bottom end of the rotating plate 33 is movably sleeved with one end of the push shaft 34. The bottom of the inner cavity of the distributor box 9 is connected to an oil delivery pipe 901 located on one side of the positioning column 17, and one end of the oil delivery pipe 901 is connected to the inner cavity of the oil pump 8. The bottom of the inner cavity of the distributor box 9 is connected to an oil drain pipe 902 located in the middle of the positioning column 17, and the inner cavity of the oil drain pipe 902 is connected to the oil guide groove 35, and one end of the oil drain pipe 902 is connected to the inner cavity of the oil tank 7 The bottom of the inner cavity of the distributor box 9 is connected to an oil guide pipe 903 located on the other side of the positioning column 17, one end of the oil guide pipe 903 is connected to the inner cavity of the oil cylinder 11, and the side of the blocking piston 20 is fixedly connected with a first spring 201, the first spring 201 is movably mounted on the linkage rod 21, and one end of the first spring 201 is fixedly connected to the side wall of the inner cavity of the slide groove 18. Hydraulic oil is injected into the left side of the inner cavity of the distributor box 9 through the oil pump 8, so that the hydraulic oil flows through the oil pipe 901, the slide groove 18, the outer groove 19, the through groove 27, and the oil guide pipe 903 in sequence into the oil cylinder 11, so that the movable piston 12 moves right, thereby driving the lifting arm 16 to rotate counterclockwise to achieve the lifting of the agricultural implement, and by stopping the oil pump 8, the blocking piston 20 is under the elastic force of the first spring 201,The passage between the outer groove 19 and the oil delivery pipe 901 is blocked to keep the agricultural implement on the lifting arm 16 stable. By controlling the limit rod 28 to move left, the blocking piston 20 moves left under the elastic force of the first spring 201, and the passage between the outer groove 19 and the oil discharge pipe 902 is opened, so that the hydraulic oil in the inner cavity of the oil cylinder 11 flows back, thereby realizing the lowering action of the agricultural implement on the lifting arm 16. The overall structural design of the positioning column 17 and the sliding sleeve 26 inside the distributor box 9 facilitates the operator to control the lifting, stable holding, and lowering of the agricultural implement on the lifting arm 16, and cancels the main control valve, one-way valve, oil return valve, and lowering speed regulating valve in the distributor of the existing lifter. While achieving the same function, the production cost is reduced, and the oil pump 8 is started only when the lifting state of the agricultural implement is controlled, thereby reducing the driving energy consumption of the oil pump 8.

[0021] Among them, the outer edge of the sliding sleeve 26 is fixedly sleeved with a sealing sleeve, and the sealing sleeve is movably sleeved with the inner wall of the distributor box 9 to ensure the sealing effect on both sides of the sliding sleeve 26 in the distributor box 9, thereby ensuring the stable operation of the distributor box 9.

[0022] Among them, the elastic force of the first spring 201 is smaller than the elastic force of the third spring 30, and the blocking piston 20 is normally located at the through hole between the outer groove 19 and the slide groove 18, so that under normal conditions, the blocking piston 20 blocks the slide groove 18 and the outer groove 19, thereby maintaining the oil pressure on one side of the positioning column 17 in the inner cavity of the distributor box 9 stable, thereby ensuring that the lifting arm 16 of the lifting agricultural implement remains stable, and injecting oil pressure through the left side of the positioning column 17, so that the blocking piston 20 moves to the right, opening the oil passage between the oil delivery pipe 901 and the outer groove 19, and by controlling the left movement of the blocking piston 20, the oil passage between the outer groove 19 and the oil drain pipe 902 is opened.

[0023] Among them, movable sealing structures are provided between the side of the distributor box 9 and the limit rod 28, and between the linkage rod 21 and the inner wall of the positioning column 17 to ensure that the sealing of the entire equipment is not affected when the limit rod 28 and the linkage rod 21 are in motion, thereby ensuring the stable operation of the distributor.

[0024] When in use, by starting the oil pump 8, hydraulic oil is injected into the inner cavity of the distributor box 9 through the oil delivery pipe 901, and the hydraulic oil pushes the blocking piston 20 to move right, opening the channel between the slide groove 18 and the outer groove 19, and the hydraulic oil flows through the slide groove 18 and the outer groove 19 to the other side of the positioning column 17. At the same time, the blocking piston 20 drives the linkage rod 21 to move right, so that the passive piston 22 moves right and leaves the through groove 27. The hydraulic oil flows through the through groove 27 and is injected into the oil cylinder 11 through the oil guide pipe 903, so that the moving piston 12 moves right, driving the rotating arm 14 to rotate, thereby causing the lifting arm 16 to rotate counterclockwise and driving the agricultural implement to lift. After the oil pump 8 is turned off, under the elastic force of the first spring 201, the blocking piston 20 moves left to block the slide groove 18 and the outer groove 19, thereby controlling the hydraulic oil in the inner cavity on the right side of the positioning column 17 to remain in a stable state, thereby keeping the lifting arm 16 of the lifting agricultural implement in a stable state, and by controlling the moving rotation The plate rotates clockwise, driving the push shaft 34 to pull the limit rod 28 to move left. Under the elastic force of the first spring 201, the blocking piston 20 moves left to open the channel between the rotating plate 33 and the outer groove 19. The hydraulic oil on one side of the positioning column 17 flows through the outer groove 19 and the oil guide groove 35, and flows back to the oil tank 7 through the oil drain pipe 902. The oil pressure on one side of the positioning column 17 is reduced. Under the self-spherical balance of the agricultural implement on the lifting arm 16, the moving piston 12 moves left, and the hydraulic oil in the inner cavity of the oil cylinder 11 flows back to the distributor box 9, and the sliding sleeve 26 moves left, so that the blocking block 24 is separated from the through port 261, and the hydraulic oil flows back to the outer groove 19 through the through port 261, and finally flows back to the oil tank 7, so as to realize the descent of the agricultural implement. At the same time, under the elastic force of the second spring 25, the refluxed hydraulic oil is damped when it flows through the through port 261, ensuring that the descent rate of the agricultural implement remains low and stable.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of crawler tractor, It is characterized in that The tractor comprises a tractor body (1), wherein a machine head (2) is provided on the front side of the top of the tractor body (1), a machine base (3) is provided in the middle of the top of the tractor body (1), a seat (4) is provided in the middle of the machine base (3), a bracket (5) located on one side of the seat (4) is provided on the top of the machine base (3), a baffle (6) is fixedly installed on the top of the bracket (5), and the baffle (6) is located directly above the seat (4), an oil tank (7) is provided on one side of the front of the machine base (3), an oil pump (8) is fixedly provided on the side of the oil tank (7), a distributor box (9) located on one side of the oil tank (7) is provided on the front of the machine base (3), an oil pipe is connected between the distributor box (9) and the oil pump (8), a lift box (10) is provided at the rear end of the top of the tractor body (1), and the An oil cylinder (11) is provided at the bottom of the inner cavity of the lift box (10), an oil delivery pipe (901) is connected between the inner cavity of the oil cylinder (11) and the inner cavity of the distributor box (9), a movable piston (12) is movably provided in the inner cavity of the oil cylinder (11), and a movable push rod (13) is fixedly connected to the middle of the side of the movable piston (12), one end of the movable push rod (13) extends to the outside of the oil cylinder (11), the top of the inner cavity of the outer groove (19) is movably sleeved with a rotating shaft (15) located on one side of the oil cylinder (11), a rotating arm (14) is fixedly sleeved on the rotating shaft (15), and the bottom end of the rotating arm (14) and one end of the movable push rod (13) are movably sleeved with a sleeve shaft, and both ends of the rotating shaft (15) are fixedly sleeved with lifting arms (16) located on both sides of the lift box (10); A positioning column (17) is provided in the middle of the inner cavity of the distributor box (9), and slide grooves (18) are provided on both sides of the positioning column (17). An outer groove (19) is provided in the middle of the top of the positioning column (17), and through holes are provided between the two ends of the outer groove (19) and the slide grooves (18) on both sides of the positioning column (17). An oil guide groove (35) is provided at the bottom of the positioning column (17) and is located in the middle of the outer groove (19). A blocking piston (20) is movably sleeved in the slide groove (18), and a linkage rod (21) is provided on the side of the blocking piston (20). A passive piston (22) is provided at one end of the linkage rod (21) and is located outside the positioning column (17). The distributor box (9) is provided with a piston (22) located on one side of the positioning column (17). The sliding sleeve (26) is provided with a through groove (27) in the middle of the sliding sleeve (26), the through groove (27) being movably sleeved with the passive piston (22), the sliding sleeve (26) being provided with through openings (261) located just above and just below the through groove (27), the top and top of the side surface of the positioning column (17) being fixedly connected with a positioning shaft (23), one end of the positioning shaft (23) passing through the through opening (261) and being fixedly connected with a blocking block (24) located on one side of the sliding sleeve (26), the positioning shaft (23) being movably sleeved with a second spring (25) located between the sliding sleeve (26) and the positioning column (17), the middle part of the side surface of the distributor box (9) being movably sleeved with a limiting rod (28), and the limiting rod (28) being fixedly sleeved with a A baffle (29) is located inside the distributor box (9), and a third spring (30) is fixedly connected to the side of the baffle (29), and the third spring (30) is movably mounted on the limit rod (28), and one end of the third spring (30) is fixedly connected to the side wall of the inner cavity of the distributor box (9), and one end of the limit rod (28) is movably connected to the side of the blocking piston (20), and the other end of the limit rod (28) extends to the outside of the distributor box (9) and is fixedly connected to a push shaft (34), and a limiting plate (31) is provided on the side of the distributor box (9), and a limiting shaft (32) is provided on the top of the limiting plate (31), and a rotating plate (33) is movably mounted on the limiting shaft (32), and the bottom end of the rotating plate (33) is connected to the push shaft (34). The bottom of the inner cavity of the distributor box (9) is connected to an oil delivery pipe (901) located on one side of the positioning column (17), one end of the oil delivery pipe (901) is connected to the inner cavity of the oil pump (8), the bottom of the inner cavity of the distributor box (9) is connected to an oil discharge pipe (902) located in the middle of the positioning column (17), and the inner cavity of the oil discharge pipe (902) is connected to the oil guide groove (35), one end of the oil discharge pipe (902) is connected to the inner cavity of the oil tank (7), the bottom of the inner cavity of the distributor box (9) is connected to an oil guide pipe (903) located on the other side of the positioning column (17), one end of the oil guide pipe (903) is connected to the inner cavity of the oil cylinder (11), and the side of the blocking piston (20) is fixedly connected to a first spring (201),The first spring (201) is movably mounted on the linkage rod (21), and one end of the first spring (201) is fixedly connected to the side wall of the inner cavity of the slide groove (18); The elastic force of the first spring (201) is smaller than the elastic force of the third spring (30), and the blocking piston (20) is normally located at the through hole between the outer groove (19) and the slide groove (18); A movable sealing structure is provided between the side surface of the distributor box (9) and the limiting rod (28), and between the linkage rod (21) and the inner wall of the positioning column (17).

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