Direct-connection transmission novel gardening tractor

Abstract

The utility model discloses a novel direct connection transmission gardening type tractor, which relates to the field of tractors and comprises a tractor structural member. 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 utility model relates to the technical field of tractors, in particular to a new-type gardening tractor with direct drive. Background Art

[0002] A tractor is a power machine used to pull and drive various supporting equipment to perform agricultural field work, earthwork operations, transport, and stationary tasks. To accomplish these tasks, a tractor and various working equipment must form a tractor unit (or simply a unit). While the types of operations performed by units are extremely diverse, they can be categorized into two types: mobile and stationary, depending on their operating method.

[0003] During mobile operation, the unit performs its work while on the move. The tractor's power is primarily transmitted to the work implement (or trailer) in the form of traction (without power output). Mobile operation can be divided into field (off-road) and transport operations. When operating in the field (off-road), the tractor can work with various towed or mounted work implements (with or without power output) to perform various soil, earthwork, or crop processing operations. When transporting, the tractor can be used with towed, mounted, or driven trailers to transport goods on roads or in fields.

[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] The existing technology (Announcement No. CN104149615B, Chinese patent published on January 18, 2017) is a small and medium-power hydrostatic transmission garden tractor, including: front drive wheels, floor assembly, rear drive wheel assembly, rear trailer, fender assembly, anti-roll bar assembly, steering gear assembly, instrument cover assembly, hood assembly, front trailer assembly, bridge housing assembly, lift 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 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-roll frame assembly; the hood assembly and the front trailer assembly are fixed to the frame; the anti-roll 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 little adhesion to the ground and weak load-bearing capacity. When in use, the tractors are prone to tilting and have poor passability. In addition, due to the limited ground clearance of the tractor, 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 footboard. Due to factors such as their structural type, adaptability, operating environment, and supporting equipment, current tractors cannot meet the current domestic market demand for gardening tractors. Utility Model Content

[0008] The present utility model aims to provide a novel gardening tractor with a direct-drive transmission, so as to solve the problems mentioned in the above-mentioned background art, such as the low adhesion between the front wheels and the ground, the weak load-bearing capacity, the tendency of the tractor to tilt during use, the poor maneuverability, the limited ground clearance of the tractor, the tendency of the tractor to scrape seedlings and ridges during gardening operations, causing damage to crops, and the tendency of soil to be thrown backwards during operation due to the lack of protection for the front wheels.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: a new type gardening tractor with direct drive, comprising tractor structural components; the tractor structural components 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;

[0010] The combined fixing frame is fixed to 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;

[0011] The engine assembly and the bridge housing assembly are directly connected by fixing bolts and shafts. The front axle drive assembly is installed on the oil pan and the flywheel housing, and is fastened to the gearbox, rear axle assembly, transfer case assembly, adjustment and lifting device assembly, and suspension assembly in sequence by bolts.

[0012] 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 provided on the left and right sides of the gantry;

[0013] The tractor structure also includes a rear safety frame assembly, which is installed above the rear axle assembly;

[0014] The tractor structure also includes a battery, which is installed below the engine crankshaft pulley. 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 horizontal height as the center of the front axle input shaft.

[0015] To further optimize this technical solution, the rear safety frame assembly includes an upper frame weldment, a mounting part and a support tube weldment. The support tube weldment is connected to the bottom of the upper frame weldment, and a mounting part is provided at the connection between the upper frame weldment and the support tube weldment to connect the upper frame weldment and the support tube weldment.

[0016] To further optimize this technical solution, the upper frame weldment is designed as a curved structure, and two groups of left and right support tube weldments are connected below the upper frame weldment, and the lower parts of the support tube weldments are installed on the left and right half-axle sleeves of the rear axle assembly through fastening bolts.

[0017] To further optimize this technical solution, the outer cover is composed of an engine hood and embedded headlights.

[0018] To further optimize this technical solution, the combined fixing frame provides installation support for the radiator and the battery.

[0019] To further optimize this technical solution, the front axle drive assembly is a planetary reduction large steering angle rear-mounted 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.

[0020] Further optimizing this technical solution, the front axle drive assembly includes a planetary carrier assembly; wherein the planetary carrier assembly and the ring gear, the ring gear support, the front drive hub, the drive wheel shaft, the left steering knuckle, the universal joint shaft, the through-core cylinder, the front axle housing, the universal joint ball head, the tie rod ball head and the right steering knuckle are arranged in sequence from left to right;

[0021] The front support and the rear support are fixed to the outside of the front axle housing, and a differential is arranged inside the front axle housing, and the rear end of the differential is respectively provided with a driving bevel gear and a rear support, and a cone transmission support is arranged on the outside of the differential.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 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 nose-up phenomenon, which increases the ground clearance of the whole machine, improves the passability of the whole machine, and shortens the wheelbase. The planetary reduction type side reduction front axle can effectively improve the bridge body and avoid the side reduction housing from scraping seedlings and ridges 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-hole cylinder can provide the engine with a larger oil pan capacity, provide protection for the engine's performance, and also facilitate the layout of the hydraulic steering pipeline, reducing the risk of the hydraulic pipeline being scratched by obstacles when the tractor is moving.

[0024] The gantry separates the outer cover, front drive axle, front drive wheel from the footboard assembly, fender assembly, and driving space, achieving 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 driver.

[0025] A double-acting clutch bridge housing assembly with crawler gear or shuttle gear function and power output function is provided. The assembly realizes the crawler gear or shuttle gear function through the double-acting clutch, main and auxiliary rotating shafts, and gear transmission, and realizes the front power output of the central four-wheel drive transfer case assembly through shafts, teeth, and gear transmission. The central four-wheel drive transfer case assembly shortens the length of the drive shaft between the transfer case and the front axle, reduces the deformation of the drive shaft during the travel of the tractor, improves the reliability of the drive shaft, and the drive shaft is close to the lower end surface of the flywheel housing, effectively ensuring the passability of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0027] Figure 2 This is a side view of the structure of the utility model;

[0028] Figure 3 This is a side view schematic diagram of the chassis structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the rear safety frame assembly structure of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the front axle drive assembly of the utility model;

[0031] Figure 6 This is a schematic cross-sectional view of the front axle drive assembly of the present utility model;

[0032] Figure 7 This is a schematic diagram of the connection between the front axle drive assembly and the engine assembly of the utility model.

[0033] 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 welded parts; 602, mounting parts; 603, support tube welded 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 Drive hub; 1605, drive axle; 1606, left steering knuckle; 1607, universal joint; 1608, through-hole cylinder; 1609, front axle housing; 16010, universal joint ball joint; 16011, tie rod ball joint; 16012, right steering knuckle; 16013, front support; 16014, differential; 16015, cone drive 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

[0034] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 7 , the utility model provides the following technical solutions: a new type of gardening tractor with direct drive, specifically including tractor structural parts;

[0036] Embodiment 1: Also includes its overall layout, the utility model 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 to 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 in sequence by high-strength mounting bolts , forming a tractor chassis layout structure, 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 flywheel housing, and is fastened to the gearbox and 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. Transparent glass is set on the left and right sides of the gantry 3. The tractor structural parts also include the rear safety frame assembly 6, which is installed above the rear axle assembly 18. The rear safety frame assembly 6 includes an upper frame weldment 601, a mounting part 602 and a support tube weldment 603. The support tube weldment 603 is connected to the lower part of the upper frame weldment 601, and a mounting part 602 is provided at the connection between the upper frame weldment 601 and the support tube weldment 603 to connect the upper frame weldment 601 and the support tube weldment 603. The upper frame weldment 601 is designed as a curved structure, and the lower part of the upper frame weldment 601 is connected to the left and right groups of support tube weldments 603, and the lower part of the support tube weldment 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 Below the engine crankshaft pulley, 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 center of the drive wheel is at the same horizontal height as the center of the front axle input shaft. The outer cover 1 is composed of the engine hood and the embedded headlights. 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.

[0037] 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 drive shaft ends of the transmission rear axle assembly 18, the instrument panel combined fuel tank 4 is fixed to the upper front end of the double-acting clutch bridge housing assembly 17 with crawler 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.

[0038] The adjusting 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. 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.

[0039] Example 2: Based on Example 1, the front axle drive assembly 16 is disclosed as a planetary reduction large steering angle rear through-core cylinder dry field type drive axle assembly, the front axle drive assembly 16 includes a planetary 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 joint shaft 1607, a through-core 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 drive support 16015, a driving bevel gear 16016 and a rear support 16017, the planetary carrier assembly Component 1601, ring gear 1602, ring gear support 1603, front drive hub 1604, drive wheel axle 1605, left steering knuckle 1606, universal joint 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 from left to right. A front support 16013 is fixed to the outside of the front axle housing 1609, and a differential 16014 is arranged inside the front support 16013. 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 outside of the differential 16014.

[0040] 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 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.

[0041] This tractor is a new type of gardening 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 crawler gear or a shuttle gear and front and rear power output. The multiple gears can meet the tractor's ultra-low speed and normal speed operation and transfer and transportation needs. The shuttle gear can quickly achieve fast forward and backward movement; the planetary reduction and large steering angle rear-mounted through-cylinder front axle drive assembly 16 specially designed for gardening tractors is installed under the engine assembly 13. Large-size 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 side-reduction housing from scraping seedlings and ridges during the operation of the tractor. The rear-mounted through-cylinder large steering angle front drive axle can effectively reduce the turning radius of the whole machine. The overall structural layout of the machine can improve the applicability of the product, while better solving the shortcomings of existing garden tractor products on the market, and improving the performance and applicability of the overall machine.

[0042] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or 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 scope of protection of the present invention.

Claims

1. A new type of gardening tractor with direct drive, 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); Its characteristics are: The combined fixing frame (7) is fixed to both sides of the tractor engine oil pan, and the front axle drive assembly (16), engine assembly (13), bridge housing assembly (17), rear axle assembly (18), suspension assembly (20) and traction assembly (22) are fastened 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, and the front axle drive assembly (16) is mounted on the oil pan and the flywheel housing, and is fastened to the gearbox and rear axle assembly (18), the transfer case assembly (10), the regulating 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) from the driving space, thereby achieving front and rear segmentation. 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), which is installed above the rear axle assembly (18); The tractor structure also includes a battery (8), which is installed below the engine crankshaft pulley. The front axle drive assembly (16) is installed below the engine assembly (13) through an axle swing seat and a connecting plate (23). The front wheel assembly (9) is installed at the left and right ends of the front axle drive assembly (16), and the center of the drive wheel is at the same horizontal height as the center of the front axle input shaft.

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 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 a mounting part (602) is provided at the connection between the upper frame welded part (601) and the support tube welded part (603) to connect the upper frame welded part (601) and the support tube welded part (603).

3. A direct-drive new gardening tractor according to claim 2, characterized in that: The upper frame welded part (601) is designed to have a curved structure, and two groups of left and right support tube welded parts (603) are connected below the upper frame welded part (601), and the lower parts of the support tube welded parts (603) are mounted on 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 outer cover (1) is composed of an engine cover and an embedded headlight.

5. The direct-drive new gardening tractor according to claim 1, characterized in that: The combined fixing frame (7) provides installation support for the radiator (2) and the battery (8).

6. A direct-drive new gardening 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.

7. A direct-drive new gardening tractor according to claim 6, characterized in that: The front axle drive assembly (16) includes a planetary carrier assembly (1601); wherein the planetary carrier assembly (1601), 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 oil cylinder (1608), the front axle housing (1609), the universal ball joint (16010), the tie rod ball joint (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), and a differential (16014) is provided inside the front axle housing (1609). A driving bevel gear (16016) and a rear support (16017) are provided at the rear end of the differential (16014), and a conical transmission support (16015) is provided on the outside of the differential (16014).

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