Width adjusting structure of sprinkler tractor

Abstract

The utility model belongs to the technical field of tractor width adjusting structures, and particularly relates to a sprinkler tractor width adjusting structure which comprises a main frame, two sides of the main frame are respectively and fixedly connected with a group of sliding rails, two sliding blocks are connected in each group of sliding rails in a sliding mode, and the tops of the sliding blocks are fixedly connected with a supporting frame. A wheel shaft is fixedly connected to the top of the supporting frame, walking wheels are rotationally connected to the two ends of the wheel shaft through bearings correspondingly, a fixing base is fixedly connected to one end of the main frame, a two-way threaded rod is fixedly connected into the fixing base, and a first nut and a second nut are in threaded connection to the two ends of the two-way threaded rod correspondingly. A first connecting rod and a second connecting rod are fixedly connected to the tops of the first nut and the second nut correspondingly, an adjusting seat is fixedly connected to the other end of the main frame, and an adjusting gear is rotationally connected into the adjusting seat. Through a double-adjusting mechanism of the two-way threaded rod and the adjusting gear, the effect of conveniently adjusting the widths of the two sides of the vehicle body is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of tractor width adjustment structure, specifically a width adjustment structure for a sprinkler irrigation machine tractor. Background Technology

[0002] With the continuous development of the field of tractor width adjustment structures, existing tractor width adjustment structure products have been widely used. However, these products still have some problems in practical use. For example, existing tractor width adjustment structures usually have major problems such as limited adjustment range, complex operation, or insufficient adaptability, which leads to low adaptability and efficiency under different road conditions.

[0003] To address these issues, several attempts have been made, such as adding mechanical linkages or hydraulic systems to achieve width adjustment. While these methods have improved aspects to some extent, they still have limitations, such as insufficient stability during the adjustment process, high operational complexity, and limited adaptability to different road widths.

[0004] A search revealed patent publication number CN214784526U, which discloses a traction-type slipform device for highway drainage ditches, published on November 19, 2021. This design employs a structure where a first motor drives a bidirectional threaded column to rotate. While this allows for width adjustment, the reliance on motor drive for the adjustment process leads to insufficient stability under complex conditions (such as uneven road surfaces or varying loads), making it prone to adjustment failures or operational delays. Therefore, this design struggles to meet the demands for rapid response and high stability in practical applications.

[0005] A search revealed patent publication number CN219857359U, which discloses an adjustable chassis for an agricultural tractor, published on October 20, 2023. This product uses an electro-hydraulic telescopic rod to adjust the chassis width. While it possesses a degree of automation, its adjustment range is limited by the physical limits of the telescopic rod, and its reliability is low under extreme conditions (such as heavy loads or rough terrain). This results in limited adaptability to different operating environments in practical applications. Therefore, this design fails to meet the requirements for a new tractor width adjustment structure with a wide range, high stability, and adaptability to complex environments.

[0006] The aforementioned problems indicate that current tractor width adjustment structures on the market are insufficient to effectively meet the new requirements for rapid response, high stability, and wide adaptability under complex working conditions. Therefore, this invention provides a sprinkler tractor width adjustment structure to overcome these shortcomings and offer a more intelligent, efficient, and adaptable solution for changing environments. Utility Model Content

[0007] This utility model proposes a width adjustment structure for a sprinkler irrigation machine tractor, aiming to solve the problems of limited adjustment range, complex operation, and insufficient adaptability of existing tractor width adjustment structures. The technical solution of this utility model is as follows: It includes a main frame, with a set of slide rails fixedly connected to both sides of the main frame. Each set of slide rails has two sliders slidably connected inside. A support frame is fixedly connected to the top of each slider, and an axle is fixedly connected to the top of the support frame. Two wheels are rotatably connected to both ends of the axle via bearings. A fixed seat is fixedly connected to one end of the main frame, and a bidirectional threaded rod is fixedly connected inside the fixed seat. A first nut and a second nut are threaded to both ends of the bidirectional threaded rod, respectively. A first connecting rod and a second connecting rod are fixedly connected to the top of the first nut and the second nut, respectively. The other ends of the first connecting rod and the second connecting rod are fixedly connected to the bottom of the slider. An adjusting seat is fixedly connected to the other end of the main frame, and an adjusting gear is rotatably connected inside the adjusting seat. A first rack and a second rack are meshed on both sides of the adjusting gear, respectively. The other ends of the first rack and the second rack are fixedly connected to the bottom of the slider. An adjusting motor is fixedly connected to one side of the adjusting gear, and the output end of the adjusting motor is fixedly connected to the adjusting gear.

[0008] Preferably, a drive motor is fixedly connected to one end of the bidirectional threaded rod, the output end of the drive motor is fixedly connected to the bidirectional threaded rod, the drive motor is fixedly connected to the inside of the fixed seat through a motor base, support blocks are fixedly connected to both sides of the motor base, the bottom of the support blocks is fixedly connected to the inner side of the fixed seat, and a support bearing is fixedly connected to the outer side of the bidirectional threaded rod, the outer side of the support bearing is fixedly connected to the inner side of the fixed seat.

[0009] Preferably, a reinforcing rib is fixedly connected to the middle of both the first connecting rod and the second connecting rod. The two ends of the reinforcing rib are fixedly connected to the bottom of the slider and the bottom of the support frame, respectively. A pulley is fixedly connected to the bottom of the slider. The outer side of the pulley is slidably connected to the inner side of the slide rail. A dust cover is fixedly connected to the bottom of the slide rail. The two sides of the dust cover are fixedly connected to the two sides of the main frame, respectively. A sealing strip is fixedly connected to the inside of the dust cover. The outer side of the sealing strip is slidably connected to the outer side of the slider.

[0010] Preferably, a protective cover is fixedly connected to the outside of the adjusting motor, and the two sides of the protective cover are respectively fixedly connected to the two sides of the adjusting seat. A heat sink is fixedly connected to the top of the protective cover, a cooling fan is fixedly connected to the outside of the heat sink, a cooling motor is fixedly connected to one side of the cooling fan, and the output end of the cooling motor is fixedly connected to the cooling fan.

[0011] Preferably, the outer side of the walking wheel is fixedly connected with anti-slip teeth, the outer side of the anti-slip teeth is trapezoidal, the inner side of the walking wheel is fixedly connected with a hub, the inner side of the hub is fixedly connected with a bearing seat, the inner side of the bearing seat is rotatably connected with a bearing, the inner side of the bearing is fixedly connected with an axle, the two ends of the axle are respectively fixedly connected with hub mounting seats, the two sides of the hub mounting seats are respectively fixedly connected with hub brackets, and the bottom of the hub brackets is fixedly connected to the top of the support frame.

[0012] Preferably, the inner side of the slide rail is provided with a groove that matches the pulley.

[0013] Preferably, the inner side of the dust cover is provided with a groove that matches the sealing strip.

[0014] Preferably, the inner side of the support bearing is provided with a through hole that matches the bidirectional threaded rod.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] I. This utility model, through the structural design of a bidirectional threaded rod and an adjusting gear, enables synchronous and independent horizontal adjustment on the sliders on both sides of the main frame, thereby expanding the adjustment range and improving adaptability. Specifically, when the adjusting motor starts, the adjusting gear rotates, driving the first and second racks to slide along the slide rail, achieving synchronous movement of the sliders on both sides and adjusting the overall width. Simultaneously, when the drive motor starts, the bidirectional threaded rod rotates, causing the first and second nuts to move in opposite directions on the bidirectional threaded rod, driving the first and second connecting rods, allowing the sliders to move independently on the slide rail, achieving local fine-tuning. This dual adjustment mechanism not only enables rapid adjustment over a wide range but also ensures stability and accuracy under complex working conditions.

[0017] II. Based on the first beneficial effect, the design of the pulleys and dust covers effectively prevents external impurities from entering the slide rails, improving the system's reliability and service life. The design of the reinforcing ribs and guide blocks also enhances the rigidity and stability of each component, ensuring reliable operation under heavy loads or on rough terrain. The design of the heat sink and cooling fan effectively reduces the temperature of the regulating motor, improving the overall system's stability and efficiency. This invention achieves rapid adjustment over a wide range through a dual adjustment mechanism of a bidirectional threaded rod and adjusting gears, significantly improving adaptability and stability. The design of the pulleys and dust covers effectively prevents external impurities from entering the slide rails, improving the system's reliability and service life. The design of the reinforcing ribs and guide blocks enhances the rigidity and stability of each component, ensuring reliable operation under complex working conditions.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the main frame and slide rail structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the bidirectional threaded rod and drive motor of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the slider and the support frame of this utility model;

[0023] Figure 5 This is a schematic diagram of the regulating motor and heat dissipation device of this utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure between the walking wheel and the hub of this utility model.

[0025] Figure label:

[0026] Main frame 1, slide rail 2, slider 3, support frame 4, wheel axle 5, traveling wheel 6, fixed seat 7, double-threaded rod 8, first nut 9, second nut 10, first connecting rod 11, second connecting rod 12, adjusting seat 13, adjusting gear 14, first rack 15, second rack 16, adjusting motor 17, drive motor 18, motor seat 19, support block 20, support bearing 21, reinforcing rib 22, pulley 23, dust cover 24, sealing strip 25, bearing seat 26, bearing 27, hub fixing seat 28, hub bracket 29, protective cover 30, heat sink 31, cooling fan 32, cooling motor 33, anti-slip teeth 34, hub 35. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-6 This utility model provides a width adjustment structure for a sprinkler irrigation machine tractor, including a main frame 1. A set of slide rails 2 are fixedly connected to both sides of the main frame 1. Two sliders 3 are slidably connected inside each set of slide rails 2. A support frame 4 is fixedly connected to the top of each slider 3, and an axle 5 is fixedly connected to the top of the support frame 4. Two wheels 6 are rotatably connected to both ends of the axle 5 via bearings 27.

[0034] One end of the main frame 1 is fixedly connected to a fixed seat 7, and a bidirectional threaded rod 8 is fixedly connected inside the fixed seat 7. The two ends of the bidirectional threaded rod 8 are respectively threadedly connected to a first nut 9 and a second nut 10. The tops of the first nut 9 and the second nut 10 are respectively fixedly connected to a first connecting rod 11 and a second connecting rod 12, and the other ends of the first connecting rod 11 and the second connecting rod 12 are respectively fixedly connected to the bottom of the slider 3.

[0035] A drive motor 18 is fixedly connected to one end of the bidirectional threaded rod 8, and the output end of the drive motor 18 is fixedly connected to the bidirectional threaded rod 8. The drive motor 18 is fixedly connected to the inside of the fixed base 7 via a motor mount 19. Support blocks 20 are fixedly connected to both sides of the motor mount 19, and the bottom of the support blocks 20 is fixedly connected to the inner side of the fixed base 7. A support bearing 21 is fixedly connected to the outer side of the bidirectional threaded rod 8, and the outer side of the support bearing 21 is fixedly connected to the inner side of the fixed base 7.

[0036] A reinforcing rib 22 is fixedly connected to the middle of both the first connecting rod 11 and the second connecting rod 12. The two ends of the reinforcing rib 22 are fixedly connected to the bottom of the slider 3 and the bottom of the support frame 4, respectively. A pulley 23 is fixedly connected to the bottom of the slider 3, and the outer side of the pulley 23 is slidably connected to the inner side of the slide rail 2. A dust cover 24 is fixedly connected to the bottom of the slide rail 2, and both sides of the dust cover 24 are fixedly connected to both sides of the main frame 1, respectively. A sealing strip 25 is fixedly connected inside the dust cover 24, and the outer side of the sealing strip 25 is slidably connected to the outer side of the slider 3.

[0037] An adjusting seat 13 is fixedly connected to the other end of the main frame 1, and an adjusting gear 14 is rotatably connected inside the adjusting seat 13. Support shafts are fixedly connected to both sides of the adjusting gear 14, and the two ends of the support shafts are rotatably connected inside the adjusting seat 13. A first rack 15 and a second rack 16 are meshed on both sides of the adjusting gear 14, and the other ends of the first rack 15 and the second rack 16 are fixedly connected to the bottom of the slider 3. An adjusting motor 17 is fixedly connected to one side of the adjusting gear 14, and the output end of the adjusting motor 17 is fixedly connected to the adjusting gear 14. A protective cover 30 is fixedly connected to the outside of the adjusting motor 17, and both sides of the protective cover 30 are fixedly connected to both sides of the adjusting seat 13. A heat sink 31 is fixedly connected to the top of the protective cover 30, a cooling fan 32 is fixedly connected to the outside of the heat sink 31, a cooling motor 33 is fixedly connected to one side of the cooling fan 32, and the output end of the cooling motor 33 is fixedly connected to the cooling fan 32.

[0038] The outer side of the traveling wheel 6 is fixedly connected with anti-slip teeth 34, the outer side of which has a trapezoidal structure. The inner side of the traveling wheel 6 is fixedly connected with a wheel hub 35, the inner side of which is fixedly connected with a bearing seat 26, the inner side of which is rotatably connected with a bearing 27, the inner side of which is fixedly connected with a wheel axle 5, the two ends of which are fixedly connected with wheel hub fixing seats 28, the two sides of which are fixedly connected with wheel hub brackets 29, and the bottom of the wheel hub brackets 29 is fixedly connected to the top of the support frame 4.

[0039] The working principle is as follows:

[0040] When it is necessary to adjust the width of the sprinkler tractor, first start the adjusting motor 17, which drives the adjusting gear 14 to rotate. The rotation of the adjusting gear 14, through meshing with the first rack 15 and the second rack 16, causes the first rack 15 and the second rack 16 to slide along the slide rail 2, thereby realizing the synchronous movement of the slider 3 and adjusting the overall width.

[0041] When local fine-tuning is required, the drive motor 18 is started, which drives the bidirectional threaded rod 8 to rotate. The rotation of the bidirectional threaded rod 8 causes the first nut 9 and the second nut 10 to move in opposite directions on the bidirectional threaded rod 8, thereby driving the first connecting rod 11 and the second connecting rod 12, so that the slider 3 can move independently on the slide rail 2, thus realizing local fine-tuning.

[0042] The design of pulley 23 and dust cover 24 effectively prevents external impurities from entering the slide rail 2, improving the system's reliability and service life. The design of reinforcing rib 22 and guide block enhances the rigidity and stability of each component, ensuring reliable operation under heavy loads or on rough terrain. The design of heat sink 31 and cooling fan 32 effectively reduces the temperature of regulating motor 17, improving the overall system stability and operating efficiency.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A width-adjustable structure for a sprinkler tractor, comprising a main frame (1), characterized in that: A set of slide rails (2) is fixedly connected to both sides of the main frame (1). Two sliders (3) are slidably connected inside each set of slide rails (2). A support frame (4) is fixedly connected to the top of the sliders (3). A wheel axle (5) is fixedly connected to the top of the support frame (4). Two wheels (6) are rotatably connected to both ends of the wheel axle (5) through bearings (27). A fixed seat (7) is fixedly connected to one end of the main frame (1). A double-threaded rod (8) is fixedly connected inside the fixed seat (7). A first nut (9) and a second nut (10) are threaded to both ends of the double-threaded rod (8). A first nut (9) and a second nut (10) are threaded to the top of the first nut (9) and the second nut (10). A first nut (9) and a second nut (10) are fixedly connected to the top of the first nut (9) and the second nut (10). A first connecting rod (11) and a second connecting rod (12) are provided. The other ends of the first connecting rod (11) and the second connecting rod (12) are fixedly connected to the bottom of the slider (3). An adjusting seat (13) is fixedly connected to the other end of the main frame (1). An adjusting gear (14) is rotatably connected inside the adjusting seat (13). A first rack (15) and a second rack (16) are meshed on both sides of the adjusting gear (14). The other ends of the first rack (15) and the second rack (16) are fixedly connected to the bottom of the slider (3). An adjusting motor (17) is fixedly connected to one side of the adjusting gear (14). The output end of the adjusting motor (17) is fixedly connected to the adjusting gear (14).

2. The width adjustment structure for a sprinkler irrigation machine tractor according to claim 1, characterized in that: One end of the bidirectional threaded rod (8) is fixedly connected to a drive motor (18), the output end of the drive motor (18) is fixedly connected to the bidirectional threaded rod (8), the drive motor (18) is fixedly connected to the inside of the fixed seat (7) through a motor seat (19), support blocks (20) are fixedly connected to both sides of the motor seat (19), the bottom of the support block (20) is fixedly connected to the inner side of the fixed seat (7), and a support bearing (21) is fixedly connected to the outer side of the bidirectional threaded rod (8), the outer side of the support bearing (21) is fixedly connected to the inner side of the fixed seat (7).

3. The width adjustment structure for a sprinkler irrigation machine tractor according to claim 1, characterized in that: The first connecting rod (11) and the second connecting rod (12) are both fixedly connected to the middle of the reinforcing rib (22). The two ends of the reinforcing rib (22) are fixedly connected to the bottom of the slider (3) and the bottom of the support frame (4), respectively. The bottom of the slider (3) is fixedly connected to the pulley (23). The outer side of the pulley (23) is slidably connected to the inner side of the slide rail (2). The bottom of the slide rail (2) is fixedly connected to the dust cover (24). The two sides of the dust cover (24) are fixedly connected to the two sides of the main frame (1), respectively. The inside of the dust cover (24) is fixedly connected to the sealing strip (25). The outer side of the sealing strip (25) is slidably connected to the outer side of the slider (3).

4. The width adjustment structure for a sprinkler irrigation machine tractor according to claim 1, characterized in that: The two sides of the adjusting gear (14) are respectively fixedly connected to the support shaft, and the two ends of the support shaft are respectively rotatably connected to the inside of the adjusting seat (13). The outer sides of the first rack (15) and the second rack (16) are respectively fixedly connected to the guide block, and the outer side of the guide block is slidably connected to the inner side of the slide rail (2).

5. The width adjustment structure for a sprinkler irrigation machine tractor according to claim 1, characterized in that: The regulating motor (17) is fixedly connected to a protective cover (30). The two sides of the protective cover (30) are fixedly connected to the two sides of the regulating seat (13). The top of the protective cover (30) is fixedly connected to a heat sink (31). The outside of the heat sink (31) is fixedly connected to a cooling fan (32). The side of the cooling fan (32) is fixedly connected to a cooling motor (33). The output end of the cooling motor (33) is fixedly connected to the cooling fan (32).

6. The width adjustment structure for a sprinkler irrigation machine tractor according to claim 1, characterized in that: The outer side of the walking wheel (6) is fixedly connected with anti-slip teeth (34), the outer side of the anti-slip teeth (34) is trapezoidal, the inner side of the walking wheel (6) is fixedly connected with a hub (35), the inner side of the hub (35) is fixedly connected with a bearing seat (26), the inner side of the bearing seat (26) is rotatably connected with a bearing (27), the inner side of the bearing (27) is fixedly connected with a wheel axle (5), the two ends of the wheel axle (5) are respectively fixedly connected with a hub fixing seat (28), the two sides of the hub fixing seat (28) are respectively fixedly connected with a hub bracket (29), and the bottom of the hub bracket (29) is fixedly connected to the top of the support frame (4).

7. The width adjustment structure for a sprinkler irrigation machine tractor according to claim 1, characterized in that: The inner side of the slide rail (2) is provided with a groove that matches the pulley (23).

8. The width adjustment structure for a sprinkler irrigation machine tractor according to claim 3, characterized in that: The dust cover (24) has a groove on its inner side that matches the sealing strip (25).

9. The width adjustment structure for a sprinkler irrigation machine tractor according to claim 2, characterized in that: The inner side of the support bearing (21) is provided with a through hole that matches the bidirectional threaded rod (8).

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