Tracked chassis and tracked vehicles

Abstract

This utility model discloses a tracked vehicle frame and tracked vehicle, including a frame body, a front support assembly, a drive wheel support assembly, a load-bearing articulated beam assembly, a support assembly, and an idler wheel support. This tracked vehicle frame helps to reduce weight while maintaining high structural strength, and can, to some extent, resolve the contradiction between the high strength requirements and relatively heavy weight of existing tracked vehicle frames. Furthermore, this tracked vehicle frame is easy to install and adjust.

Description

Technical Field

[0001] This utility model relates to a tracked frame and a tracked vehicle. Background Technology

[0002] Currently, tracked vehicles are used to varying degrees across different industries, such as construction machinery, agricultural machinery, unmanned vehicles, and special-purpose vehicles. The larger contact area of ​​tracks provides stronger traction, enabling equipment to move normally on rough, harsh, or soft terrain. Wider tracks lower the center of gravity of the equipment, improving vehicle stability.

[0003] However, existing tracked vehicle frame designs are mostly integral welded connections, with each component fixed to the others. This limits the design freedom of the entire frame and hinders independent modular design. As the requirements for tracked vehicles gradually increase, the adjustable space of integral welded tracked frames is limited. Furthermore, existing tracked vehicles, with their complex frames and heavy tracks, face constraints on overall vehicle weight. The heavier frame and tracks compress the weight of other systems, affecting the design freedom. Moreover, when tracked vehicles need to adapt to areas with strict weight requirements, the inherent weight of the tracked vehicle increases design difficulty. Using weaker materials for weight reduction, on the other hand, compromises vehicle stability and safety, creating a dilemma. Utility Model Content

[0004] In view of this, one objective of this utility model is to provide a tracked vehicle frame that facilitates weight reduction while maintaining high structural strength, thus resolving to some extent the contradiction between the high strength requirements and relatively heavy weight of existing tracked vehicle frames. Furthermore, this tracked vehicle frame features a modular structure, facilitating installation and adjustment. Another objective of this utility model is to provide a tracked vehicle.

[0005] The present invention achieves the above objectives by adopting the following technical solution.

[0006] On the one hand, this utility model provides a tracked vehicle frame, including:

[0007] The main frame is a rectangular frame structure with three longitudinal beams and one inner curved beam, which form the long side of the rectangular frame structure. The three longitudinal beams are the first longitudinal beam, the second longitudinal beam and the third longitudinal beam. The first longitudinal beam is located directly above the third longitudinal beam, and the second longitudinal beam is located approximately directly above the inner curved beam. An upper crossbeam is set between the first longitudinal beam and the second longitudinal beam.

[0008] The front support bracket is disposed at the first end of the main body of the vehicle frame;

[0009] The drive wheel bracket assembly is used to mount the drive wheel. The drive wheel bracket assembly is connected to the front support assembly, and the distance between the two is adjustable.

[0010] The load-bearing articulated beam is arranged laterally and is configured to be articulated with the swing arm of the suspension unit; it includes multiple parallel load-bearing articulated beams, one end of which is connected to the inner curved beam and the other end of which is connected to the third longitudinal beam.

[0011] The support structure is vertically arranged and configured to hinge with the shock absorbers of the suspension unit. It includes a front support, a middle support, and a rear support. The front support is located near the front support assembly and is connected to the second longitudinal beam via a first column and to the inner curved beam via a first diagonal brace beam. The rear support is located near the second end of the frame body and is connected to the second longitudinal beam via a third column and to the inner curved beam via a third diagonal brace beam. The middle support is located between the front support and the rear support and is connected to the second longitudinal beam via a second column and to the inner curved beam via a second diagonal brace beam.

[0012] The idler wheel support is vertically mounted at the second end of the frame body, designed to accommodate an adaptive tensioning device. Its upper end is connected to the first longitudinal beam, and its lower end is connected to the third longitudinal beam. This design improves structural strength, reduces weight, and provides greater adjustability.

[0013] In this invention, the first, second, and third longitudinal beams are all arranged along the length of the main frame body, and their cross-sections are all L-shaped (i.e., angled beams) or hollow cuboid structures, preferably hollow cuboid structures. The inner curved beam is a hollow structure. This helps to reduce the weight of the frame while ensuring structural strength.

[0014] In this invention, the front support assembly is connected to the ends of the first and second longitudinal beams, and provides limiting and fixing for the third longitudinal beam and the inner curved beam. The front support assembly is used to fix the drive wheel support assembly.

[0015] The front support frame consists of an upper bracket, upper bracket reinforcing ribs, a rear panel, a lower support plate, a bottom load-bearing plate, and a front baffle. The rear panel is a plate-like structure, with its upper edge connected to the end faces of the first and second longitudinal beams of the frame body. The rear panel includes a main body and an extension. The main body is roughly rectangular and has connecting holes and weight-reducing holes. One corner of the top of the main body extends along its length (or height) and width to form an extension. L-shaped limiting blocks are located on both sides of the bottom of the main body, used to limit and fix the third longitudinal beam and the inner curved beam, respectively. The upper edge of the main body is connected to the end face of the first longitudinal beam, and one side of the extension is connected to the end face of the second longitudinal beam. One end of the upper bracket is fixed to the extension of the rear panel, and the upper bracket is also connected to the drive wheel support frame. The upper bracket has vertically connected horizontal and vertical sections, with an L-shaped cross-section. The ends of both the horizontal and vertical sections of the upper bracket are connected to the extension of the rear panel of the front support. Reinforcing ribs are installed on the upper bracket to strengthen it. These reinforcing ribs are right-angled triangles with a long right-angle side and a short right-angle side. The long right-angle side connects to the vertical section of the upper bracket, and the short right-angle side connects to the extension of the rear panel of the front support. The lower support plate of the front support is a flat plate structure, vertically connected to the lower part of the rear panel of the front support and located away from the main frame body. The lower support plate has a U-shaped indentation, with the indentation away from the rear panel of the front support. The lower support plate has weight-reducing holes and connecting holes. Bottom load-bearing plates are located below the lower support plate of the front support. These bottom load-bearing plates are multiple pieces, parallel to each other and all vertically positioned. The main body of the bottom load-bearing plate consists of an upper section and a lower section arranged sequentially. The upper section is basically rectangular in shape, and its top is connected to the bottom of the lower support plate of the front bracket. The upper section has an elliptical hole (as a weight-reducing hole), with its length in the horizontal direction. The lower section has an arc-shaped structure, with a circular hole (as a weight-reducing hole) on its surface. The diameter of the lower section is smaller than the horizontal length of the upper section. The surface of the upper section away from the rear plate of the front bracket has block-shaped protrusions.

[0016] The front fender is connected to the end face of the bottom load-bearing plate away from the rear panel of the front support. The angle between the front fender and the bottom load-bearing plate is less than 90° and greater than 45°.

[0017] The drive wheel bracket comprises a drive wheel upright plate, a front connecting plate, a reinforcing plate, a reinforcing seat, a secondary upright plate, a wear-resistant sleeve mounting seat, a drive wheel base plate, and a guide plate. The drive wheel upright plate, front connecting plate, secondary upright plate, and drive wheel base plate together form a space for mounting the drive wheel. The drive wheel upright plate and secondary upright plate are positioned opposite each other, both perpendicularly connected to the front connecting plate and the drive wheel base plate, with the drive wheel base plate located at the bottom. A secondary upright plate hole is located in the center of the secondary upright plate, a wear-resistant sleeve mounting seat is located at one of its top corners, and a secondary upright plate groove with an L-shaped cross-section is located at the bottom of the secondary upright plate. The reinforcing plate and reinforcing seat are respectively mounted on the front connecting plate, with the reinforcing plate positioned above the reinforcing seat, and both the reinforcing plate and reinforcing seat are located outside the space for mounting the drive wheel.

[0018] The drive sprocket has holes for mounting the reducer, and the area of ​​these holes is larger than that of the secondary drive sprocket holes. The placement of the drive sprocket and secondary drive sprockets ensures that the drive sprockets are aligned, guaranteeing that the drive sprockets on both sides of the track system are on the same horizontal plane, and ensuring that the track is mounted on the drive sprockets at a consistent height on both sides. Wear-resistant bushings further secure the drive sprockets, withstand the vibrations and impacts generated by their rotation, protect the drive sprockets during vehicle operation, and extend their service life.

[0019] The guide plate has an L-shaped cross section. The guide plate is connected to one end of the drive wheel base plate. The guide plate and the auxiliary vertical plate slide groove are arranged opposite to each other. Together with the drive wheel base plate, they form a limiting guide rail for limiting the lower support plate of the front bracket.

[0020] The front connecting plate is bolted to the rear panel of the front bracket. The upper bracket is connected to the drive wheel upright plate; the lateral portion of the upper bracket is located above the drive wheel upright plate, and the vertical portion of the upper bracket fits against the outer surface of the drive wheel upright plate (relative to the inner surface forming the space for mounting the drive wheel). The upper bracket and its reinforcing ribs vertically restrict and fix the drive wheel bracket assembly, improving overall structural stability. The front baffle is located below the guide plate.

[0021] During use, the lower support plate of the front bracket is fixed in relative position to the main body of the frame. The guide rail formed by the sub-upper plate, the drive wheel base plate, and the guide plate can be moved back and forth, thereby adjusting the position of the drive wheel and improving the track flexibility. By adjusting the guide rail structure (also known as the groove structure) back and forth to compensate for the differences on both sides, the environmental adaptability of the drive wheel is improved, maintenance difficulty is reduced, and the overall stability of the vehicle is improved.

[0022] The reinforcing plate and reinforcing seat can be fixed with long bolts, which helps to ensure that the overall structure is firmly fixed after adjustment when moving the drive wheel bracket.

[0023] The four plates—the drive wheel upright plate, the front connecting plate, the auxiliary upright plate, and the drive wheel base plate—are connected by mortise and tenon joints and welding to form the main frame of the drive wheel bracket. The mortise and tenon joints and welding connection method not only ensures the accuracy of positioning but also guarantees the strength of the main frame.

[0024] According to the tracked vehicle frame of this utility model, preferably, the inner curved beam has three arc-shaped sections and two straight sections, which are spaced apart and arranged in the following order: arc-shaped section, straight section, arc-shaped section, straight section, and arc-shaped section; the protrusions of the arc-shaped sections face towards the third longitudinal beam. This facilitates the installation of other components and ensures the strength of the frame.

[0025] According to the tracked vehicle frame described in this utility model, preferably:

[0026] The front support also includes a front bracket and a front support column; the outer contour of the front bracket is composed of a cuboid arranged vertically and an inverted trapezoidal platform; the lower part of the inverted trapezoidal platform is provided with a shock absorber connection hole.

[0027] The first upright consists of two parallel columns. The ends of the two first uprights furthest from the second longitudinal beam are connected to the top of the cuboid of the front support. The front support column is horizontally positioned, with one end connected to one end of the cuboid and the other end connected to the front support. The end of the first diagonal brace beam furthest from the inner curved beam is connected to the other end of the cuboid of the front support. This design helps ensure the strength of the chassis and reduces the weight of the tracked chassis.

[0028] According to the tracked vehicle frame described in this utility model, preferably:

[0029] The central support also includes a central bracket, the outer contour of which is composed of a cuboid arranged vertically and an inverted trapezoidal platform; the lower part of the inverted trapezoidal platform is provided with a shock absorber connection hole.

[0030] The second upright consists of two parallel columns; the ends of the two columns furthest from the second longitudinal beam are connected to the top of the cuboid of the central support; the second diagonal brace consists of two beams; the ends of the two diagonal braces furthest from the inner curved beam are connected to both ends of the cuboid of the central support, and are symmetrically arranged. This arrangement helps to ensure the strength of the chassis and reduces the weight of the tracked chassis.

[0031] According to the tracked vehicle frame described in this utility model, preferably:

[0032] The rear support also includes a rear bracket and a rear support column. The outer contour of the rear bracket is composed of a cuboid arranged vertically and an inverted trapezoidal platform. A vibration damper connection hole is provided at the lower part of the inverted trapezoidal platform.

[0033] The third upright consists of two parallel columns. The end of each third upright, furthest from the second longitudinal beam, is connected to the top of the cuboid of the rear support. The end of the third diagonal brace, furthest from the inner curved beam, is connected to one end of the cuboid of the rear support, with its extension direction pointing towards the central support. The rear support column is horizontally positioned and connected to the other end of the cuboid of the rear support. This design helps ensure the strength of the chassis and reduces the weight of the tracked chassis.

[0034] In this invention, the first, second, and third uprights, as well as the first, second, and third diagonal braces, are all essentially hollow cuboid structures. The ends of the first upright connected to the second longitudinal beam, the first diagonal brace connected to the inner curved beam, the second upright connected to the second longitudinal beam, the second diagonal brace connected to the inner curved beam, the third upright connected to the second longitudinal beam, and the third diagonal brace connected to the inner curved beam all employ a single-sided tenon joint structure. The first upright and the first diagonal brace are connected to the front support via mortise and tenon joints. The second upright and the second diagonal brace are connected to the middle support via mortise and tenon joints. The third upright and the third diagonal brace are connected to the rear support via mortise and tenon joints. This method of using rivets to secure the connections at corresponding connection points enhances the stability of the frame, improves the overall vehicle safety, and provides a degree of cushioning against vertical impacts when the vehicle is subjected to an impact.

[0035] According to the tracked vehicle frame of this utility model, preferably, the main body of the frame further includes multiple vertical beams, all of which are arranged vertically, namely a first vertical beam, a second vertical beam, a third vertical beam, a fourth vertical beam, and a movable vertical beam; the two ends of the first vertical beam and the second vertical beam are respectively connected to the second longitudinal beam and the inner curved beam; the first vertical beam is located between the front support and the middle support, and the second vertical beam is located at the second end of the main body of the frame, away from the front support; the two ends of the third vertical beam and the fourth vertical beam are respectively connected to the first longitudinal beam and the third longitudinal beam; the movable vertical beam is respectively connected to the first longitudinal beam and the third longitudinal beam, and is located between the third vertical beam and the fourth vertical beam;

[0036] The end of the rear support column furthest from the rear bracket is perpendicularly connected to the second vertical beam. This helps to strengthen the main body of the vehicle frame.

[0037] In this invention, the first, second, third, and fourth vertical beams all have L-shaped cross-sections or are hollow cuboid structures. The movable vertical beam can be an angled beam, i.e., with an L-shaped cross-section.

[0038] According to the tracked vehicle frame of this utility model, preferably, the main body of the frame further includes a rear crossbeam and a bottom crossbeam; the rear crossbeam is arranged laterally and is connected to the second vertical beam and the idler wheel support respectively; the bottom crossbeam is connected to the third longitudinal beam and the inner curved beam respectively, and is close to the rear crossbeam.

[0039] According to the tracked vehicle frame of this utility model, preferably, it further includes a dust collection hood unit, which is disposed between the first longitudinal beam and the second longitudinal beam, with the opening of the dust collection hood unit facing upwards; the dust collection hood unit includes a front dust collection hood, a middle dust collection hood, and a rear dust collection hood; wherein, the front dust collection hood and the middle dust collection hood are respectively located above the load-bearing articulated beam, and the rear dust collection hood is disposed at the second end of the vehicle frame body away from the front support. This can be used for collecting dust, mud, rain, snow, and other debris.

[0040] According to the tracked vehicle frame of this utility model, preferably, there are three load-bearing articulated beams, two of which are arranged close to the front support, and one end of the other load-bearing articulated beam is connected to the middle of the inner curved beam. Each load-bearing articulated beam includes a load-bearing beam body and articulated ears. The two ends of the load-bearing beam body are connected to the third longitudinal beam and the inner curved beam, respectively. There are multiple articulated ears arranged in parallel, each connected to the load-bearing beam body. Each articulated ear has an articulation hole for articulating with the swing arm of the suspension unit via a connector. The load-bearing articulated beams are mainly used to install the tracked vehicle's motion system and withstand impacts and vibrations from the ground. The load-bearing beam body can be a hollow cuboid structure with single-sided tenon joints at both ends. The load-bearing beam body and the articulated ears are connected by insertion welding.

[0041] On the other hand, the present invention also provides a tracked vehicle, including the tracked frame as described above.

[0042] This utility model's tracked vehicle frame achieves weight reduction while maintaining high structural strength, thus resolving to some extent the contradiction between the high strength requirements and relatively heavy weight of existing tracked vehicle frames. Furthermore, the tracked vehicle frame features a modular structure, facilitating installation and adjustment, offering ample adjustment space and a high degree of freedom, which is beneficial for independent modular design. In addition, the entire tracked vehicle frame utilizes a combination of mortise and tenon joints, welding, and riveting for assembly, resulting in a lightweight yet high-strength overall structure, overcoming the difficulties in welding high-strength alloys and the problem of low post-weld strength. Attached Figure Description

[0043] Figure 1 This is a three-dimensional structural diagram of a tracked vehicle frame according to the present invention.

[0044] Figure 2 for Figure 1A schematic diagram of the three-dimensional structure rotated 180° along the paper.

[0045] Figure 3 This is a schematic diagram of the structure of the vehicle head support of this utility model.

[0046] Figure 4 This is a schematic diagram of the structure of the drive wheel bracket of this utility model.

[0047] Figure 5 This is a structural schematic diagram of the load-bearing hinged beam of this utility model.

[0048] Figure 6 This is a schematic diagram of the front support structure of this utility model.

[0049] Figure 7 This is a schematic diagram of the rear support structure of this utility model.

[0050] Figure 8 This is a schematic diagram of the central support structure of this utility model.

[0051] Figure 9 This is a schematic diagram of the front dust cover of this utility model.

[0052] Figure 10 This is a schematic diagram of the structure of the dust collection hood of this utility model.

[0053] Figure 11 This is a schematic diagram of the rear dust cover of this utility model.

[0054] Figure 12 This is a schematic diagram of the structure of the inducer support of this utility model.

[0055] Figure 13 This is a schematic diagram of the bottom crossbeam of this utility model.

[0056] The annotations in the attached figures are explained as follows:

[0057] 41-Chassis main body, 411-Inner curved beam, 412-First longitudinal beam, 413-Second longitudinal beam, 414-Third longitudinal beam, 4151-First vertical beam, 4152-Second vertical beam, 4153-Third vertical beam, 4154-Fourth vertical beam, 4155-Modible vertical beam, 4161-Rear crossbeam, 4162-Bottom crossbeam, 41622-First opening, 41623-Second opening;

[0058] 42-Composition of the front support frame, 421-Upper bracket, 422-Upper bracket reinforcing rib, 423-Rear plate of the front support frame, 4233-Limiting block, 424-Lower support plate of the front support frame, 425-Bottom load-bearing plate, 426-Front baffle.

[0059] 43-Drive wheel bracket components, 431-Drive wheel upright plate, 432-Front connecting plate, 433-Reinforcing plate, 434-Reinforcing seat, 435-Secondary upright plate, 436-Wear-resistant sleeve mounting seat, 437-Drive wheel base plate, 438-Guide plate;

[0060] 44-Composition of load-bearing hinged beam, 441-Load-bearing hinged beam, 4411-Load-bearing beam body, 4412-Hinge lug, 44121-Hinge hole;

[0061] 451-Front support, 4511-Front support column, 4512-First column, 4513-First diagonal brace beam, 4514-Front bracket, 452-Middle support, 4521-Second column, 4522-Second diagonal brace beam, 4523-Middle bracket, 453-Rear support, 4531-Third column, 4532-Third diagonal brace beam, 4533-Rear bracket, 4534-Rear support column; 450-Shock absorber connection hole;

[0062] 461-Front dust hood, 4612-U-shaped opening, 462-Middle dust hood, 4621-Square opening, 463-Rear dust hood, 4631-Arched bottom plate, 4632-Fan-shaped side plate; 47-Induced wheel support, 471-Induced wheel rear beam, 472-Induced wheel attachment, 473-Support column;

[0063] 401 - First reinforced corner code, 402 - Second reinforced corner code, 403 - Third reinforced corner code. Detailed Implementation

[0064] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0065] Example 1

[0066] like Figures 1 to 13 As shown, a tracked vehicle frame in this embodiment includes a frame body 41, a front support assembly 42, a drive wheel support assembly 43, a load-bearing articulated beam assembly 44, a support assembly, a dust cover unit, and an idler wheel support 47.

[0067] The main frame 41 is a cuboid-like frame structure with accommodating space. The main frame 41 has three longitudinal beams and one inner curved beam 411, forming the four long sides of the cuboid-like frame structure. The three longitudinal beams are designated as the first longitudinal beam 412, the second longitudinal beam 413, and the third longitudinal beam 414. The first longitudinal beam 412 is located directly above the third longitudinal beam 414, and the second longitudinal beam 413 is approximately directly above the inner curved beam 411. All three longitudinal beams and the inner curved beam 411 are hollow frame structures.

[0068] like Figure 1As shown, the inner curved beam 411 has three arc-shaped segments and two straight segments, which are spaced apart and arranged in the following order: arc-shaped segment, straight segment, arc-shaped segment, straight segment, and arc-shaped segment. One of the arc-shaped segments is located approximately in the middle of the inner curved beam 411; the protrusion of the arc-shaped segment faces the third longitudinal beam 414. The inner curved beam 411 can be integrally molded, resulting in high structural strength.

[0069] like Figure 1 and Figure 2 As shown, the frame body 41 also includes multiple vertical beams, namely a first vertical beam 4151, a second vertical beam 4152, a third vertical beam 4153, a fourth vertical beam 4154, and a movable vertical beam 4155. The two ends of the first vertical beam 4151 are connected to the straight sections of the second longitudinal beam 413 and the inner curved beam 411 (near the front support assembly 42), respectively. The two ends of the second vertical beam 4152 are connected to the arc-shaped sections of the second longitudinal beam 413 and the inner curved beam 411 (away from the front support assembly 42), respectively. The first vertical beam 4151 is located between the front support 451 and the middle support 452, and the second vertical beam 4152 is located at the second end of the frame body 41, away from the front support assembly 42. The two ends of the third vertical beam 4153 are connected to the first longitudinal beam 412 and the third longitudinal beam 413, respectively. The third vertical beam 4153 is close to the idler wheel support 47. The two ends of the fourth vertical beam 4154 are connected to the first longitudinal beam 412 and the third longitudinal beam 413, respectively. The top of the fourth vertical beam 4154 is close to the front dust hood 461. The movable vertical beam 4155 is connected to the first longitudinal beam 412 and the third longitudinal beam 413, and is located between the third vertical beam 4153 and the fourth vertical beam 4154. The top of the movable vertical beam 4155 is close to the middle dust hood 462. A second reinforcing angle bracket 402 is provided at the connection between the movable vertical beam 4155 and the first longitudinal beam 412 and the third longitudinal beam 413. The second reinforcing angle bracket 402 includes an angle bracket body and an angle bracket reinforcing rib. The angle bracket body has a cross-section similar to an L-shape, and the angle bracket reinforcing rib is located in the middle of the angle bracket body. The angle bracket reinforcing rib has a trapezoidal shape. The movable vertical beam 4155 is an angle beam, that is, the cross-section is L-shaped. The design structure of the movable vertical beam 4155 and the second reinforcing angle bracket 402 facilitates adjustment, improves the degree of freedom, and can ensure the strength of the overall structure of the reinforced side.

[0070] The frame body 41 also includes a crossbeam unit, which includes a rear crossbeam 4161, a bottom crossbeam 4162, and an upper crossbeam. The upper crossbeam consists of multiple beams, with both ends connected to the first longitudinal beam 412 and the second longitudinal beam 413, respectively. The upper crossbeam includes three large crossbeams and multiple small crossbeams. The three large crossbeams are distributed at both ends and near the middle of the frame body 41. The small crossbeams can be used to fix the front dust hood 461 and the middle dust hood 462.

[0071] The rear crossbeam 4161 is arranged laterally and is connected to the second vertical beam 4152 and the rear vertical beam 471 of the idler wheel support 47. The rear crossbeam 4161 includes a main body and reinforcing ribs. The main body of the rear crossbeam has an L-shaped cross section, i.e., an angled beam. The main body of the rear crossbeam is provided with two or more triangular reinforcing ribs. The rear crossbeam 4161 is responsible for connecting and reinforcing the two vertical beams at the rear (i.e., the second end) of the frame body 41, mainly bearing lateral impact forces and improving vehicle stability.

[0072] The bottom crossbeam 4162 is connected to the raised surfaces of the arc-shaped segments at the ends of the third longitudinal beam 413 and the inner curved beam 411, respectively, and is located near the rear crossbeam 4161. The bottom crossbeam 4162 has a groove structure with a U-shaped cross-section, the U-shaped groove opening facing downwards. At least one side wall of the groove structure is provided with a first opening 41622 and a second opening 41623. The first opening 41622 is U-shaped, and the second opening 41623 is U-shaped, with the area of ​​the second opening 41623 being larger than that of the first opening 41622. A square reinforcing rib is also provided within the groove structure of the bottom crossbeam 4162. The first opening 41622, the second opening 41623, and the U-shaped groove opening facilitate cable routing. The bottom crossbeam 4162 connects the third longitudinal beam 413 and the inner curved beam 411, strengthening the overall vehicle structure and providing mounting holes for related equipment and attachments.

[0073] like Figures 1 to 3As shown, the front support assembly 42 is located at the first end of the frame body 41. The front support assembly 42 includes an upper bracket 421, an upper bracket reinforcing rib 422, a front support rear panel 423, a front support lower support plate 424, a bottom load-bearing plate 425, and a front baffle 426. The front support rear panel 423 is a plate-like structure with a generally rectangular main body. The main body has connecting holes and weight-reducing holes. One corner of the top of the main body extends along its height and width directions to form an extension. L-shaped limiting blocks 4233 are provided on both sides of the bottom of the main body, used to limit the third longitudinal beam 414 and the inner curved beam 411, respectively. The upper edge of the front support rear panel 423 is connected to the end face of the first longitudinal beam 412 and the end face of the second longitudinal beam 413 of the frame body 41. The upper bracket 421 has a horizontally connected and a vertically connected portion, with an L-shaped cross-section. The ends of both the horizontal and vertical portions of the upper bracket 421 are connected to the extension of the rear back plate 423 of the front support. The upper bracket reinforcing rib 422 is triangular and is connected to both the vertical portion of the upper bracket 421 and the extension of the rear back plate 423 of the front support. The lower support plate 424 of the front support is a flat plate structure, vertically connected to the lower part of the rear back plate 423 of the front support, and located away from the frame body 41. The end of the lower support plate 424 away from the rear back plate 423 of the front support is recessed inwards (i.e., recessed towards the rear back plate 423 of the front support). The lower support plate 424 of the front support is provided with weight-reducing holes and connecting holes. The bottom load-bearing plate 425 is located below the lower support plate 424 of the front support. There are multiple bottom load-bearing plates 425, which are parallel to each other and all vertically arranged. The main body of the bottom load-bearing plate 425 consists of an upper section and a lower section arranged sequentially. The upper section is basically rectangular in shape, and its top is connected to the bottom of the lower support plate 424 of the front support. The upper section has an elliptical hole, the length of which is horizontal. The lower section has an arc-shaped structure, and a circular hole is provided on its surface. The diameter of the lower section is smaller than the horizontal length of the upper section. Block-shaped protrusions are provided on the surface of the upper section away from the rear support plate 423.

[0074] like Figure 1 As shown, the front baffle 426 is connected to the end face of the bottom load plate 425 away from the rear back plate 423 of the front support.

[0075] like Figure 1 , Figure 2 and Figure 4As shown, the drive wheel bracket assembly 43 is connected to the front support assembly 42, and is used to mount the drive wheel. The drive wheel bracket assembly 43 includes a drive wheel upright plate 431, a front connecting plate 432, a reinforcing plate 433, a reinforcing seat 434, a secondary upright plate 435, a wear-resistant sleeve mounting seat 436, a drive wheel base plate 437, and a guide plate 438. The drive wheel upright plate 431, front connecting plate 432, secondary upright plate 435, and drive wheel base plate 437 together form a space for mounting the drive wheel. The drive wheel upright plate 431 and secondary upright plate 435 are arranged opposite each other, both perpendicularly connected to the front connecting plate 432 and the drive wheel base plate 437, with the drive wheel base plate 437 located at the bottom. A secondary vertical plate hole is provided in the middle of the secondary vertical plate 435, a wear-resistant sleeve mounting seat 436 is provided at one of the top corners of the secondary vertical plate 435, and a secondary vertical plate groove is provided at the bottom of the secondary vertical plate 435, the cross-section of which is L-shaped. A reinforcing plate 433 and a reinforcing seat 434 are respectively provided on the front connecting plate 432, with the reinforcing plate 433 located above the reinforcing seat 434, and both the reinforcing plate 433 and the reinforcing seat 434 are outside the receiving space used to install the drive wheel.

[0076] The drive wheel upright plate 431 is provided with a drive wheel upright plate hole, the area of ​​which is larger than that of the auxiliary upright plate hole. The guide plate 438 has an L-shaped cross section and is connected to one end of the drive wheel base plate 437. The guide plate 438 and the auxiliary upright plate slide groove are arranged opposite to each other, forming a limiting guide rail for limiting the lower support plate 424 of the front bracket.

[0077] The front connecting plate 432 is fixed to the rear plate 423 of the front bracket by bolts (e.g., long bolts), and the distance between them can be adjusted. The upper bracket 421 is connected to the drive wheel upright plate 431. The lateral part of the upper bracket 421 is located above the drive wheel upright plate 431, and the vertical part of the upper bracket 421 is attached to the outer surface of the drive wheel upright plate 431 (relative to the inner surface that forms the receiving space for mounting the drive wheel).

[0078] like Figure 1 As shown, the front baffle 426 is located below the drive wheel base plate 437.

[0079] When in use, the relative position of the lower support plate 424 of the front bracket and the main body of the frame 41 is fixed, and the drive wheel bracket assembly 43 can be moved back and forth, thereby adjusting the position of the drive wheel.

[0080] The reinforcing plate 433 and the reinforcing seat 434 can be fixed with long bolts, so that the front connecting plate 432 and the rear plate 423 of the front bracket can be fixed with long bolts. This helps to ensure that the overall structure is firmly fixed after the adjustment is completed when the drive wheel bracket assembly 43 is moved.

[0081] The four plates, namely the drive wheel upright plate 431, the front connecting plate 432, the auxiliary upright plate 435, and the drive wheel base plate 437, are connected by mortise and tenon joints and welding to form the main frame of the drive wheel bracket 43. The mortise and tenon joints and welding connection method not only ensures the accuracy of positioning but also guarantees the strength of the main frame.

[0082] like Figure 1 , Figure 2 and Figure 5 As shown, the load-bearing articulated beam assembly 44 is arranged laterally and can be hinged to the swing arm of the suspension unit. The load-bearing articulated beam assembly 44 includes three parallel load-bearing articulated beams 441. One end of each load-bearing articulated beam 441 is connected to the inner curved beam 411, and the other end is connected to the third longitudinal beam 414. Two of the load-bearing articulated beams 441 are positioned close to the front support assembly 42, and one end of the third load-bearing articulated beam 441 is connected to the vicinity of the middle of the inner curved beam 411. Figure 5 As shown, each load-bearing hinged beam 441 includes a load-bearing beam body 4411 and hinge ears 4412. The load-bearing beam body 4411 is formed by a main body and two end connecting parts. The main body is a hollow cuboid structure, and the end connecting parts form an L-shaped structure with the opening of the L-shaped structure facing upward. The end connecting parts are connected to the third longitudinal beam 414 and the inner curved beam 411, respectively. There are multiple hinge ears 4412, which are arranged in parallel. The hinge ears 4412 are provided with hinge holes 44121 for connecting with the swing arm of the suspension unit through connectors to form a hinge. The hinge ear 4412 includes a hinge portion and a connecting portion. The hinge portion has a hinge hole 44121. One end face of the hinge portion is arc-shaped, and the other end face is planar. The connecting portion consists of two connecting posts, which are perpendicularly connected to the planar end face of the hinge portion. One connecting post is inserted into the main body of the load-bearing beam 4411, and the other connecting post is located below the main body of the load-bearing beam 4411 and can be connected by welding. A bushing can be installed inside the hinge hole 44121. The load-bearing beam 4411 can be formed of a high-strength lightweight alloy. The two load-bearing hinge beams 441 near the front support component 42 are arranged symmetrically.

[0083] like Figure 1 , Figure 6 , Figure 7 , Figure 8 As shown, the support assembly is vertically arranged and can be hinged to the shock absorber of the suspension unit. The support assembly includes a front support 451, a middle support 452, and a rear support 453.

[0084] like Figure 1 and Figure 6As shown, the front support 451 is located near the front support frame 42. The front support 451 includes a front support column 4511, a first column 4512, a first diagonal brace beam 4513, and a front bracket 4514. The front support 451 is connected to the second longitudinal beam 413 through the first column 4512 and to the inner curved beam 411 through the first diagonal brace beam 4513.

[0085] The outer contour of the front support 4514 consists of a cuboid arranged vertically and an inverted trapezoidal platform; a shock absorber connection hole 450 is provided at the lower part of the inverted trapezoidal platform. There are two first columns 4512, parallel to each other. One end of each first column 4512 is connected to the top of the cuboid of the front support 4514, and the other end is connected to the second longitudinal beam 413. The front support column 4511 is horizontally arranged, with one end connected to one end of the cuboid of the front support 4514, and the other end connected to the front support assembly 42. The end of the first diagonal brace beam 4513 away from the inner curved beam 411 is connected to the other end of the cuboid of the front support 4514. An acute angle is formed between the central axis of the first diagonal brace beam 4513 and the central axis of the front support 4514.

[0086] like Figure 1 and Figure 7 As shown, the rear support 453 includes a third column 4531, a third diagonal brace 4532, a rear bracket 4533, and a rear support column 4534. The rear support 453 is located near the second end of the frame body 41 (i.e., the end away from the front bracket assembly 42), and is connected to the second longitudinal beam 413 via the third column 4531, and to the inner curved beam 411 via the third diagonal brace 4532. There are two third columns 4531, which are parallel to each other. The outer contour of the rear bracket 4533 consists of a vertically arranged cuboid and an inverted trapezoidal platform; a shock absorber connection hole 450 is provided at the lower part of the inverted trapezoidal platform. One end of the third diagonal brace 4532 is connected to one end of the cuboid of the rear bracket 4533, and the extension direction of the third diagonal brace 4532 faces the front support 451. The rear support column 4534 is horizontally positioned, with one end connected to the other end of the cuboid of the rear bracket 4533, and the other end connected to the second vertical beam 4152. The rear support column 4534 is vertically connected to the second vertical beam 4152. The central axis of the third diagonal brace beam 4532 forms an acute angle with the central axis of the rear bracket 4533.

[0087] like Figure 1 and Figure 8As shown, the central support 452 is located between the front support 451 and the rear support 453. The central support 452 includes a second column 4521, a second diagonal brace 4522, and a central bracket 4523. The central support 452 is connected to the second longitudinal beam 413 via the second column 4521 and to the inner curved beam 411 via the second diagonal brace 4522. There are two second columns 4521, which are parallel to each other. There are two second diagonal braces 4522, which are symmetrically arranged. The outer contour of the central bracket 4523 consists of a cuboid arranged vertically and an inverted trapezoidal platform; the lower part of the inverted trapezoidal platform is provided with a vibration damper connection hole 450. The two second columns 4521 are respectively connected to the top of the cuboid of the central bracket 4523. One end of the two second diagonal braces 4522 are respectively connected to the two ends of the cuboid of the central bracket 4523, and the other end is respectively connected to the inner curved beam 411. The central axis of the second diagonal brace 4522 and the central axis of the middle support 4523 form an acute angle.

[0088] like Figure 2 As shown, a third reinforcing bracket 403 is provided at the connection points of the first diagonal bracing beam 4513, the second diagonal bracing beam 4522, and the third diagonal bracing beam 4532 with the inner curved beam 411. The cross-section of the third reinforcing bracket 403 is similar to an L-shape.

[0089] The first column 4512, the second column 4521, the third column 4531, the first diagonal brace 4513, the second diagonal brace 4522, and the third diagonal brace 4532 all adopt a single-sided tenon and mortise structure. The first diagonal brace 4513 and the front support 4514, the second diagonal brace 4522 and the middle support 4523, the third diagonal brace 4532, and the rear support 4533 are connected by mortise and tenon joints.

[0090] like Figure 1 , Figure 2 and Figure 12 As shown, the idler wheel support 47 is vertically disposed at the second end of the frame body 41 (i.e., the end away from the front support assembly 42). It is used to install an adaptive tensioning device. Its upper end is connected to the first longitudinal beam 412, and its lower end is connected to the third longitudinal beam 414. Specifically, the idler wheel support 47 includes an idler wheel rear upright beam 471, an idler wheel attachment 472, and a support column 473. The top end of the idler wheel rear upright beam 471 is connected to the first longitudinal beam 412, and the bottom end is connected to the third longitudinal beam 414. The idler wheel attachment 472 is disposed in the upper middle part of the idler wheel rear upright beam 471. The support column 473 is cylindrical, vertically connected to the idler wheel rear upright beam 471, and oriented towards the second vertical beam 4152. A reinforcing plate is installed around the portion of the idler wheel rear upright beam 471 where the support column 473 is located.

[0091] like Figure 1 , Figure 2 , Figures 9 to 11As shown, the dust collection hood unit is disposed between the first longitudinal beam 412 and the second longitudinal beam 413, with the opening of the dust collection hood unit facing upwards. The dust collection hood unit includes a front dust collection hood 461, a middle dust collection hood 462, and a rear dust collection hood 463. The front dust collection hood 461 and the middle dust collection hood 462 are respectively located above the load-bearing hinge beam 441, and the rear dust collection hood 463 is disposed at the second end of the frame body 41 away from the front support assembly 42. The outer contour of the front dust collection hood 461 is a semi-circular structure with a receiving space. Its top is fixed to a small crossbeam, and both ends of the small crossbeam are fixed to the first longitudinal beam 412 and the second longitudinal beam 413. A U-shaped opening 4612 is provided at the top of one side wall of the front dust collection hood 461, which is close to the second longitudinal beam 413. A discharge port is provided at the bottom of the front dust collection hood 461. The outer contour of the central dust cover 462 is a semi-circular structure with an accommodating space. Its top is fixed to the main crossbeam, and a first reinforcing bracket 401 is provided at the connection between the main crossbeam and the first longitudinal beam 412 and the second longitudinal beam 413. The shape of the first reinforcing bracket 401 is basically the same as that of the second reinforcing bracket 402. The first reinforcing bracket 401 and the second reinforcing bracket 402 play a reinforcing role, which can enhance the structural strength of the entire vehicle, reduce the impact and vibration borne by various parts, extend the service life of the frame, and improve the installation accuracy of equipment and structure.

[0092] The center dust hood 462 has square openings 4621 on both ends, and the line connecting the center points of the two square openings 4621 extends in the same direction as the length of the frame body 41. A discharge port is located at the bottom of the center dust hood 4622. The rear dust hood 463 is formed by an arc-shaped base plate 4631 and two fan-shaped side plates 4632, which are connected to both sides of the arc-shaped base plate 4631. One end of the arc-shaped base plate 4631 is connected to the main crossbeam, one fan-shaped side plate 4632 is connected to the second longitudinal beam 413, and the other fan-shaped side plate 4632 is connected to a connecting seat, which is connected to both the main crossbeam and the first longitudinal beam 412. A large V-shaped recess is provided on the top surface of the fan-shaped side plate 4632.

[0093] The dust collection hood unit can be made of thin plates and lightweight alloys welded together, and is used to collect dust, mud, rain, snow and other debris.

[0094] Example 2

[0095] This embodiment provides a tracked vehicle, including the tracked frame as described in Embodiment 1.

[0096] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model fall within the scope of this utility model.

Claims

1. A tracked vehicle frame, characterized in that, include: The main frame is a rectangular frame structure with three longitudinal beams and one inner curved beam, which form the long side of the rectangular frame structure. The three longitudinal beams are the first longitudinal beam, the second longitudinal beam and the third longitudinal beam. The first longitudinal beam is located directly above the third longitudinal beam, and the second longitudinal beam is located approximately directly above the inner curved beam. An upper crossbeam is set between the first longitudinal beam and the second longitudinal beam. The front support bracket is disposed at the first end of the main body of the vehicle frame; The drive wheel bracket assembly is used to mount the drive wheel. The drive wheel bracket assembly is connected to the front support assembly, and the distance between the two is adjustable. The load-bearing articulated beam is arranged laterally and is configured to be articulated with the swing arm of the suspension unit; it includes multiple parallel load-bearing articulated beams, one end of which is connected to the inner curved beam and the other end of which is connected to the third longitudinal beam. The support structure is vertically arranged and configured to hinge with the shock absorbers of the suspension unit. It includes a front support, a middle support, and a rear support. The front support is located near the front support assembly and is connected to the second longitudinal beam via a first column and to the inner curved beam via a first diagonal brace beam. The rear support is located near the second end of the frame body and is connected to the second longitudinal beam via a third column and to the inner curved beam via a third diagonal brace beam. The middle support is located between the front support and the rear support and is connected to the second longitudinal beam via a second column and to the inner curved beam via a second diagonal brace beam. The idler wheel support is vertically mounted at the second end of the frame body and is configured to accommodate an adaptive tensioning device. Its upper end is connected to the first longitudinal beam and its lower end is connected to the third longitudinal beam.

2. The tracked vehicle frame according to claim 1, characterized in that, The inner curved beam has three arc-shaped sections and two straight sections, which are spaced apart and arranged in the following order: arc-shaped section, straight section, arc-shaped section, straight section, and arc-shaped section; the protrusion of the arc-shaped sections faces the third longitudinal beam.

3. The tracked vehicle frame according to claim 1, characterized in that: The front support also includes a front bracket and a front support column; the outer contour of the front bracket is composed of a cuboid arranged vertically and an inverted trapezoidal platform; the lower part of the inverted trapezoidal platform is provided with a shock absorber connection hole. The first column consists of two parallel columns; the ends of the two first columns away from the second longitudinal beam are respectively connected to the top of the cuboid of the front support; the front support column is horizontally arranged, with one end connected to one end of the cuboid and the other end connected to the front support; the end of the first diagonal brace away from the inner curved beam is connected to the other end of the cuboid of the front support.

4. The tracked vehicle frame according to claim 1, characterized in that: The central support also includes a central bracket, the outer contour of which is composed of a cuboid arranged vertically and an inverted trapezoidal platform; the lower part of the inverted trapezoidal platform is provided with a shock absorber connection hole. The second column consists of two parallel columns; the ends of the two columns away from the second longitudinal beam are respectively connected to the top of the cuboid of the central support; the second diagonal brace consists of two beams; the ends of the two diagonal braces away from the inner curved beam are respectively connected to the two ends of the cuboid of the central support and are symmetrically arranged.

5. The tracked vehicle frame according to claim 1, characterized in that: The rear support also includes a rear bracket and a rear support column. The outer contour of the rear bracket is composed of a cuboid arranged vertically and an inverted trapezoidal platform. A vibration damper connection hole is provided at the lower part of the inverted trapezoidal platform. The third column consists of two parallel columns; the end of the third column away from the second longitudinal beam is connected to the top of the cuboid of the rear support; the end of the third diagonal brace away from the inner curved beam is connected to one end of the cuboid of the rear support, and the extension direction of the third diagonal brace is towards the central support; the rear support column is horizontally arranged and connected to the other end of the cuboid of the rear support.

6. The tracked vehicle frame according to claim 5, characterized in that, The main frame also includes multiple vertical beams, all of which are vertically arranged, namely a first vertical beam, a second vertical beam, a third vertical beam, a fourth vertical beam, and a movable vertical beam; the two ends of the first and second vertical beams are connected to the second longitudinal beam and the inner curved beam, respectively; the first vertical beam is located between the front support and the middle support, and the second vertical beam is located at the second end of the main frame, away from the front support; the two ends of the third and fourth vertical beams are connected to the first and third longitudinal beams, respectively; the movable vertical beam is connected to the first and third longitudinal beams, respectively, and is located between the third and fourth vertical beams; The end of the rear support column away from the rear bracket is perpendicularly connected to the second vertical beam.

7. The tracked vehicle frame according to claim 6, characterized in that, The main body of the frame also includes a rear crossbeam and a bottom crossbeam; the rear crossbeam is arranged laterally and is connected to the second vertical beam and the idler wheel support respectively; the bottom crossbeam is connected to the third longitudinal beam and the inner curved beam respectively, and is close to the rear crossbeam.

8. The tracked vehicle frame according to claim 6, characterized in that, It also includes a dust collection hood unit, which is disposed between the first longitudinal beam and the second longitudinal beam, with the opening of the dust collection hood unit facing upward; the dust collection hood unit includes a front dust collection hood, a middle dust collection hood and a rear dust collection hood; wherein, the front dust collection hood and the middle dust collection hood are respectively located above the load-bearing hinge beam, and the rear dust collection hood is disposed at the second end of the vehicle frame body away from the front support.

9. The tracked vehicle frame according to claim 1, characterized in that, There are three load-bearing articulated beams, two of which are arranged close to the front support of the vehicle, and one end of the other load-bearing articulated beam is connected to the middle of the inner curved beam. The load-bearing articulated beam includes a load-bearing beam body and a hinge lug. The two ends of the load-bearing beam body are connected to the third longitudinal beam and the inner curved beam, respectively. There are multiple hinge lugs arranged in parallel, and they are connected to the load-bearing beam body. The hinge lugs are provided with hinge holes for connecting to the swing arm of the suspension unit through connectors to form a hinge.

10. A tracked vehicle, characterized in that, Includes the tracked frame as described in any one of claims 1 to 9.

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