Direct-connection transmission novel gardening tractor

Abstract

The invention discloses a direct connection transmission novel gardening type tractor, and relates to the field of tractors. The tractor structural component comprises an outer cover body, a radiator, a portal frame, combined fixing frames, a fuel tank assembly, a storage battery, a front wheel assembly, a transfer case assembly, an engine assembly, a front axle driving assembly, a gap axle shell assembly, a rear axle assembly, a suspension assembly and a traction assembly, and the combined fixing frames are fixed to the two sides of an engine oil pan. The front axle driving assembly, the engine assembly, the gap axle shell assembly, the rear axle assembly, the suspension assembly and the traction assembly are sequentially connected in a fastened mode through high-strength installation bolts. According to the direct-connection transmission novel gardening type tractor portal frame, the outer cover body, the front drive axle and the front drive wheels are separated from the foot floor assembly, the fender assembly and the driving space, front and back segmentation is achieved, a driver can observe the positions of front wheels at any time through transparent glass on the left side and the right side of the portal frame, and the front wheels are prevented from deviating during operation.

Description

Technical Field

[0001] The invention relates to the technical field of tractors, in particular to a new type of gardening tractor with direct drive. Background Art

[0002] Tractors are power machines used to pull and drive various supporting machines to complete agricultural field operations, various earthwork engineering operations, transportation operations and fixed operations. Tractors must be combined with various operating machines to form a tractor unit (or simply a unit) to complete various operations. Although the types of operations completed by the unit are extremely numerous, they can be divided into two categories: mobile and fixed according to the working mode of the unit.

[0003] In mobile work, the unit completes the work during the movement. At this time, the tractor's power is mainly transmitted to the work machine (or trailer) in the form of traction (without power output). Mobile work can be divided into field (off-road) work and transportation work. When the tractor is working in the field (off-road), the tractor can work with various traction or suspension work machines (with or without power output) to perform various processing work on soil, earthwork or crops. When the tractor is doing transportation work, the tractor can work with traction, suspension or drive trailers to complete transportation work on the road or in the field.

[0004] In stationary work, the tractor stops at a fixed work location and drives various stationary machines through the tractor's power output shaft and belt pulley. At this time, the tractor's power is transmitted to the stationary machines in the form of torque.

[0005] Among the two working modes mentioned above, mobile working is the main working mode, and in mobile working, the main focus is on completing field (off-road) work.

[0006] Prior art (publication number CN104149615B, Chinese patent published on January 18, 2017) Small and medium power hydrostatic transmission garden tractor, including: front drive wheel, floor assembly, rear drive wheel assembly, rear trailer, fender assembly, anti-rollover frame assembly, steering gear assembly, instrument cover assembly, hood assembly, front trailer assembly, bridge housing assembly, lifter assembly, suspension assembly, hydraulic system assembly, electrical system assembly, seat assembly; frame, engine and its accessories, transfer case assembly , front axle drive assembly, bridge housing assembly, hydrostatic transmission system assembly, and rear axle housing assembly are fastened in sequence to form the chassis part; the electrical system assembly and the floor assembly are fixed to the instrument cover assembly; the seat assembly is fixed to the rear end of the floor assembly; the fender assembly is fixed to the floor assembly and the anti-rollover frame assembly; the hood assembly and the front trailer assembly are fixed to the frame; the anti-rollover frame assembly, the instrument cover assembly, and the steering gear assembly are fixed to the bridge housing assembly; the rear trailer, the lifter assembly, and the suspension assembly are fixed to the rear axle housing assembly and the lifter assembly.

[0007] The front wheels of current tractors have less adhesion to the ground and weaker load-bearing capacity. When in use, the tractor is prone to tilting and has poor passability. In addition, due to the limitation of the tractor's ground clearance, the tractor is prone to scraping seedlings and ridges during gardening operations, causing damage to crops. In addition, due to the lack of protection of the front wheels, mud is easily thrown backwards during operation, causing mud and water to splash onto the driver and the footrest. Current tractors cannot meet the current domestic market demand for gardening tractors due to their structural type, adaptability, operating environment, supporting machinery and other factors. Summary of the invention

[0008] The object of the present invention is to provide a new type of gardening tractor with direct drive, so as to solve the problems mentioned in the above background technology that the current tractors have low adhesion between the front wheels and the ground, weak load-bearing capacity, and are prone to tilting when in use, with poor passability. In addition, due to the limitation of the tractor's ground clearance, the tractor is prone to scraping seedlings and ridges during gardening operations, causing damage to crops, and the front wheels are prone to throwing out mud backwards during operation due to lack of protection.

[0009] To achieve the above object, the present invention provides the following technical solutions: a direct-drive new gardening tractor, comprising tractor structural parts; the tractor structural parts include an outer cover, a radiator, a gantry, a fuel tank assembly, a joint fixing frame, a front wheel assembly, a transfer case assembly, an engine assembly, a front axle drive assembly, a bridge housing assembly, a rear axle assembly, a suspension assembly and a traction assembly; The combined fixing frame is fixed on both sides of the tractor engine oil pan, and the front axle drive assembly, engine assembly, bridge housing assembly, rear axle assembly, suspension assembly and traction assembly are fastened and connected in sequence by bolts to form a unique tractor chassis layout structure; The engine assembly is directly connected to the bridge housing assembly through fixing bolts and shafts, the front axle drive assembly is installed on the oil pan and the flywheel housing, and is fastened and connected with the gearbox and the rear axle assembly, the transfer case assembly, the regulating lifter assembly and the suspension assembly in sequence through bolts; The gantry separates the outer cover, the front wheel assembly, the front axle drive assembly and the driving space to achieve front and rear segmentation, and transparent glass is arranged on the left and right sides of the gantry; The tractor structure also includes a rear safety frame assembly, which is installed above the rear axle assembly; The tractor structure also includes a battery, which is installed below the crankshaft pulley of the engine. The front axle drive assembly is installed below the engine assembly through an axle swing seat and a connecting plate. The front wheel assembly is installed at the left and right ends of the front axle drive assembly, and the center of the drive wheel is at the same level as the center of the front axle input shaft. The outer cover is composed of an engine hood and an embedded headlight; The combined fixing frame provides installation support for the radiator and the battery.

[0010] To further optimize the technical solution, the rear safety frame assembly includes an upper frame welded part, a mounting part and a support tube welded part, the support tube welded part is connected to the lower part of the upper frame welded part, and a mounting part is provided at the connection between the upper frame welded part and the support tube welded part to connect the upper frame welded part and the support tube welded part.

[0011] To further optimize the technical solution, the upper frame welded part is designed as a curved structure, and two groups of left and right support tube welded parts are connected below the upper frame welded part, and the lower part of the support tube welded parts is installed on the left and right half-axle sleeves of the rear axle assembly by fastening bolts.

[0012] To further optimize the technical solution, the front axle drive assembly is a planetary reduction large steering angle rear through-cylinder dry field type drive axle assembly, which is installed under the engine and fixed to the engine oil pan and flywheel housing by high-strength bolts and connecting plates.

[0013] Further optimizing the technical solution, the front axle drive assembly includes a planet carrier assembly; wherein the planet carrier assembly and the ring gear, the ring gear support, the front drive hub, the drive wheel shaft, the left steering knuckle, the universal transmission shaft, the through-core cylinder, the front axle housing, the universal ball head, the tie rod ball head and the right steering knuckle are arranged in sequence from left to right; The front axle housing has a front support and a rear support fixed to its outer side, a differential is arranged inside the front axle housing, a driving bevel gear and a rear support are arranged at the rear end of the differential, and a cone transmission support is arranged on the outer side of the differential.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The front axle drive assembly is installed under the engine assembly. As the center of gravity of the whole machine moves forward, the adhesion between the driving front wheel and the ground increases. This design scheme can use front drive tires with larger specifications than traditional garden tractors, so that the load-bearing capacity of the front tires can be effectively improved, and the tractor will not have the phenomenon of tilting its head, thereby increasing the ground clearance of the whole machine, improving the passability of the whole machine, and shortening the wheelbase. The planetary reduction front axle can effectively improve the bridge body and avoid the phenomenon of scraping seedlings and ridges caused by the side reduction housing during the operation of the tractor. The large steering angle front drive axle can effectively reduce the turning radius of the whole machine. The rear-mounted through-core cylinder can provide the engine with a larger oil pan capacity, provide protection for the engine's performance, and facilitate the layout of the hydraulic steering pipelines, reducing the risk of the hydraulic pipelines being scratched by obstacles when the tractor is moving.

[0015] The gantry separates the outer cover, front drive axle, front drive wheel from the footboard assembly, fender assembly and driving space to achieve front and rear segmentation. The transparent glass on the left and right sides of the gantry allows the driver to observe the position of the front wheels at any time to prevent the front wheels from running off the track, crushing ridges and crops during operation. It can also effectively prevent mud and water caused by the front wheels being too far back from splashing onto the footboard, fenders and the driver.

[0016] A double-acting clutch bridge housing assembly with a crawler gear or shuttle gear function and a power output function is provided. The assembly realizes the crawler gear or shuttle gear function through a double-acting clutch, a main and auxiliary rotating shaft, and a gear transmission, and realizes the front power output of a mid-mounted four-wheel drive transfer case assembly through a shaft, a tooth insert, and a gear transmission. The mid-mounted four-wheel drive transfer case assembly shortens the length of the transmission shaft between the transfer case and the front axle, reduces the deformation of the transmission shaft during the walking process of the tractor, improves the reliability of the transmission shaft, and the transmission shaft is close to the lower end surface of the flywheel housing, which effectively ensures the passability of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 It is a schematic side view of the chassis structure of the present invention; Figure 4 This is a schematic diagram of the structure of the rear safety rack assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the front axle drive assembly of the present invention; Figure 6 It is a schematic cross-sectional structure diagram of the front axle drive assembly of the present invention; Figure 7 It is a schematic diagram of the connection between the front axle drive assembly and the engine assembly of the present invention.

[0018] In the figure: 1, outer cover; 2, radiator; 3, gantry; 4, instrument panel combined fuel tank; 5, mudguard assembly; 6, rear safety frame assembly; 601, upper frame welding parts; 602, mounting parts; 603, support pipe welding parts; 7, joint fixing frame; 8, battery; 9, front wheel assembly; 10, transfer case assembly; 11, footboard assembly; 12, rear wheel assembly; 13, engine assembly; 14, steering assembly; 15, adjustment lift assembly; 16, front axle drive assembly; 1601, planetary carrier assembly; 1602, ring gear; 1603, ring gear support; 1604, front drive driving wheel hub; 1605, driving wheel axle; 1606, left steering knuckle; 1607, universal transmission shaft; 1608, through-hole cylinder; 1609, front axle housing; 16010, universal ball joint; 16011, tie rod ball joint; 16012, right steering knuckle; 16013, front support; 16014, differential; 16015, cone transmission support; 16016, driving bevel gear; 16017, rear support; 17, bridge housing assembly; 18, rear axle assembly; 19, brake assembly; 20, suspension assembly; 21, seat assembly; 22, traction assembly; 23, connecting plate. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-Figure 7 , the present invention provides the following technical solutions: a new type of gardening tractor with direct drive, specifically including tractor structural parts; Embodiment 1: Also includes its overall layout, the present invention provides the following technical solutions, discloses that the tractor structure includes an outer cover 1, a radiator 2, a gantry 3, a joint fixing frame 7, a battery 8, a front wheel assembly 9, a transfer case assembly 10, an engine assembly 13, a front axle drive assembly 16, a bridge housing assembly 17, a rear axle assembly 18, a suspension assembly 20 and a traction assembly 22, the radiator 2 and the joint fixing frame 7 are fixed on both sides of the engine oil pan, the front axle drive assembly 16, the bridge housing assembly 17, the rear axle assembly 18, the suspension assembly 20 and the traction assembly 22 are fastened and connected in sequence by high-strength mounting bolts, The tractor chassis layout structure is formed, the engine assembly 13 and the bridge housing assembly 17 are directly connected by fixing bolts and shafts, the front axle drive assembly 16 is installed on the oil pan and the flywheel housing, and is fastened and connected with the gearbox and the rear axle assembly 18, the transfer case assembly 10, the adjustment lifter assembly 15 and the suspension assembly 20 in sequence by high-strength bolts, the gantry 3 separates the outer cover 1, the front wheel assembly 9, the front axle drive assembly 16 from the driving space to achieve front and rear segmentation, and transparent glass is set on the left and right sides of the gantry 3. The tractor structural parts also include a rear safety frame assembly 6, which is installed above the rear axle assembly 18. The safety frame assembly 6 includes an upper frame welded part 601, a mounting part 602 and a support tube welded part 603. The support tube welded part 603 is connected to the lower part of the upper frame welded part 601, and the mounting part 602 is provided at the connection between the upper frame welded part 601 and the support tube welded part 603. The upper frame welded part 601 is designed in a curved structure, and the lower part of the upper frame welded part 601 is connected to the left and right groups of support tube welded parts 603, and the lower part of the support tube welded part 603 is installed on the left and right half-axle sleeves of the rear axle assembly 18 by fastening bolts. The battery 8 is installed on the generator. Below the crankshaft pulley of the engine, the front axle drive assembly 16 is installed below the engine assembly 13 through the axle swing seat and the joint fixing frame 7. The front wheel assembly 9 is installed at the left and right ends of the front axle drive assembly 16. The horizontal height of the driving wheel center is the same as that of the front axle input shaft center. The outer cover 1 is composed of the engine hood and the embedded headlight. The joint fixing frame 7 provides installation support for the radiator 2 and the battery 8. The tractor structural parts also include the instrument panel combined fuel tank 4, the fender assembly 5, the foot floor assembly 11, the rear wheel assembly 12, the steering assembly 14, the adjustment lifter assembly 15, the brake assembly 19 and the seat assembly 21.

[0021] The front wheel assembly 9 is installed on the left and right ends of the front axle drive assembly 16, the rear wheel assembly 12 is installed on the left and right ends of the drive shaft of the transmission rear axle assembly 18, the instrument panel combined fuel tank 4 is fixed on the front end of the double-acting clutch bridge housing assembly 17 with creeper gear or shuttle gear function and power output function, the gantry 3 is installed on the left and right windows on the front of the bridge housing assembly 17 and the left and right foot floor assemblies 11, and the foldable rear safety frame assembly 6 is fastened to the left and right half-axle sleeves of the transmission rear axle assembly 18 by bolts.

[0022] The regulating lifter assembly 15 is fastened to the upper plane and rear end surface of the transmission rear axle assembly 18 by bolts; the foot floor assembly 11 is fixed to the left and right sides of the bridge housing assembly 17 and the transmission rear axle assembly 18; the front section of the fender assembly 5 is fixed to both sides of the foot floor assembly 11, and the rear section is fixed to the left and right half-axle sleeves of the transmission rear axle assembly 18, the mid-mounted four-wheel drive transfer case assembly 10 is installed at the bottom end of the double-acting clutch bridge housing assembly 17 with crawler gear or shuttle gear function and power output function, and the seat assembly 21 is fixed to the rear upper part of the transmission rear axle assembly 18; the steering assembly 14 is installed on the welding bracket above the bridge housing assembly 17; the rear traction assembly 22 is fixed to the rear end and bottom surface of the transmission rear axle assembly 18.

[0023] Embodiment 2: Based on Embodiment 1, the front axle drive assembly 16 is disclosed as a planetary reduction large steering angle rear through-core oil cylinder dry field type drive axle assembly, the front axle drive assembly 16 includes a planet carrier assembly 1601, a ring gear 1602, a ring gear support 1603, a front drive hub 1604, a drive wheel shaft 1605, a left steering knuckle 1606, a universal transmission shaft 1607, a through-core oil cylinder 1608, a front axle housing 1609, a universal ball head 16010, a tie rod ball head 16011, a right steering knuckle 16012, a front support 16013, a differential 16014, a cone transmission support 16015, a driving bevel gear 16016 and a rear support 16017, the planet carrier assembly 1601, ring gear 1602, ring gear support 1603, front driving wheel hub 1604, driving wheel axle 1605, left steering knuckle 1606, universal transmission shaft 1607, through-core cylinder 1608, front axle housing 1609, universal ball head 16010, tie rod ball head 16011 and right steering knuckle 16012 are arranged in sequence from left to right, a front support 16013 is fixed to the outer side of the front axle housing 1609, and a differential 16014 is arranged inside the front support 16013, and a driving bevel gear 16016 and a rear support 16017 are respectively arranged on the left side of the differential 16014, and a cone transmission support 16015 is arranged on the outer side of the differential 16014.

[0024] The hydraulic steering assembly 14 supplies hydraulic oil to the through-cylinder 1608 to push the cylinder piston rod to move left and right, driving the universal ball head 16010, the tie rod ball head 16011, the left steering knuckle 1606, and the right steering knuckle 16012 to swing left and right, thereby realizing the left and right steering of the front drive wheels; the transfer case assembly 10 supplies power to the active bevel gear 16016, driving the differential 16014 to transmit power to the left and right universal joints 1607 respectively, and the universal joints 1607 drive the planetary carrier assembly 1601 and the front drive hub 1604 to make circular motion, thereby driving the front wheels to move.

[0025] The tractor is a new type of horticultural tractor designed for special working environments such as greenhouses and orchards. The layout and transmission system design of the whole machine are more reasonable. The double-acting clutch realizes separate control of walking and power output. The bridge housing assembly 17 is equipped with a crawling gear or a shuttle gear and front and rear power output. The multiple gears can meet the ultra-low speed and normal speed operation and transfer and transportation needs of the tractor. The shuttle gear can quickly realize fast forward and backward movement. The planetary reduction and large steering angle rear-mounted through-the-heart cylinder front axle drive assembly 16 specially designed for horticultural tractors is installed under the engine assembly 13. Large-sized front drive tires are selected to improve the load-bearing capacity of the front tires. The whole machine has no warping phenomenon, which increases the ground clearance of the whole machine, improves the passability of the whole machine, and shortens the wheelbase. The planetary reduction and side-reduction dryland front axle can effectively improve the bridge body and avoid the scraping of seedlings and ridges caused by the side-reduction housing during the operation of the tractor. The rear-mounted through-the-heart cylinder large steering angle front drive axle can effectively reduce the turning radius of the whole machine. The overall machine structure layout can improve the applicability of the product, while better solving the shortcomings of existing gardening tractor products on the market, and improving the overall machine performance and applicability.

[0026] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A direct-drive new-type gardening tractor, comprising tractor structural parts; the tractor structural parts include an outer cover (1), a radiator (2), a gantry (3), a fuel tank assembly (4), a joint fixing frame (7), a front wheel assembly (9), a transfer case assembly (10), an engine assembly (13), a front axle drive assembly (16), a bridge housing assembly (17), a rear axle assembly (18), a suspension assembly (20) and a traction assembly (22); Features: The combined fixing frame (7) is fixed to both sides of the tractor engine oil pan, and the front axle drive assembly (16), the engine assembly (13), the bridge housing assembly (17), the rear axle assembly (18), the suspension assembly (20) and the traction assembly (22) are fastened and connected in sequence by bolts to form a tractor chassis layout structure; The engine assembly (13) is directly connected to the bridge housing assembly (17) via fixing bolts and shafts; the front axle drive assembly (16) is mounted on the oil pan and the flywheel housing, and is fastened and connected to the gearbox and rear axle assembly (18), the transfer case assembly (10), the adjustment lift assembly (15), and the suspension assembly (20) in sequence via bolts; The gantry (3) separates the outer cover (1), the front wheel assembly (9), the front axle drive assembly (16) and the driving space to achieve front and rear segmentation, and transparent glass is provided on the left and right sides of the gantry (3); The tractor structure also includes a rear safety frame assembly (6), wherein the rear safety frame assembly (6) is installed above the rear axle assembly (18); The tractor structure also includes a battery (8), the battery (8) being mounted below the crankshaft pulley of the engine, the front axle drive assembly (16) being mounted below the engine assembly (13) via an axle swing seat and a connecting plate (23), the front wheel assembly (9) being mounted at left and right ends of the front axle drive assembly (16), and the center of the drive wheel being at the same level as the center of the front axle input shaft; The outer cover (1) is composed of an engine cover and an embedded headlight; The combined fixing frame (7) provides installation support for the radiator (2) and the battery (8).

2. A direct-drive new garden tractor according to claim 1, characterized in that: The rear safety frame assembly (6) comprises an upper frame welded component (601), a mounting component (602) and a support tube welded component (603); the support tube welded component (603) is connected below the upper frame welded component (601), and a mounting component (602) is provided at the connection between the upper frame welded component (601) and the support tube welded component (603) to connect the upper frame welded component (601) and the support tube welded component (603).

3. A direct-drive new gardening tractor according to claim 2, characterized in that: The upper frame welded component (601) is designed to be a curved structure, and two groups of left and right support tube welded components (603) are connected below the upper frame welded component (601), and the support tube welded components (603) are mounted below the left and right half-axle sleeves of the rear axle assembly (18) via fastening bolts.

4. A direct-drive new garden tractor according to claim 1, characterized in that: The front axle drive assembly (16) is a planetary reduction large steering angle rear through-cylinder dry field type drive axle assembly, which is installed under the engine and fixed to the engine oil pan and flywheel housing by high-strength bolts and connecting plates.

5. A direct-drive new garden tractor according to claim 4, characterized in that: The front axle drive assembly (16) comprises a planet carrier assembly (1601); wherein the planet carrier assembly (1601) and the ring gear (1602), the ring gear support (1603), the front drive hub (1604), the drive wheel shaft (1605), the left steering knuckle (1606), the universal transmission shaft (1607), the through-core cylinder (1608), the front axle housing (1609), the universal ball head (16010), the tie rod ball head (16011) and the right steering knuckle (16012) are arranged in sequence from left to right; A front support (16013) and a rear support (16017) are fixed to the outside of the front axle housing (1609), a differential (16014) is arranged inside the front axle housing (1609), and a driving bevel gear (16016) and a rear support (16017) are respectively arranged at the rear end of the differential (16014), and a cone transmission support (16015) is arranged on the outside of the differential (16014).

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