A rearwardly inclined track structure

Abstract

The utility model discloses a kind of backward order partial formula track structure, and vehicle body is cooperated and installed, the track structure includes track, driving wheel, tensioning guide wheel assembly, load wheel group and multiple load wheel groups, track is set on driving wheel, tensioning guide wheel assembly, load wheel group and multiple load wheel groups, to make track constitute annular structure;Wherein, driving wheel and tensioning guide wheel assembly are spaced apart, load wheel group and multiple load wheel groups are spaced apart between driving wheel and guide tensioning wheel group, each load wheel group is swinged along vehicle body and is respectively equipped with first shock absorber between vehicle body;Load wheel group is adjacent to driving wheel, second shock absorber is equipped between load wheel group and vehicle body, and limit arm is equipped between load wheel group and driving wheel, to make load wheel group swing along the axis of driving wheel.The swing mode of load wheel group adjacent to driving wheel is improved in the application, various problems caused by the reduction of ground contact length during track driving can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of track drive system technology, and in particular to a rearward-biased track structure. Background Technology

[0002] Tracked drive systems mainly consist of drive wheels, track chains (or track shoes), load-bearing wheel sets (or load-bearing wheel assemblies), guide wheel sets, tensioning mechanisms, etc. These components work together to achieve power transmission between the track and the ground, enabling the movement of equipment or vehicles. Tracked drive systems are widely used in scenarios that require adapting to complex terrain, improving stability, and increasing load-bearing capacity.

[0003] In existing technologies, such as the patent application with patent number CN201610622972.3 entitled "An Explosion-Proof Firefighting and Reconnaissance Robot," the tracked drive system mainly includes multiple load-bearing wheel assemblies, guide wheel assemblies, tension wheel assemblies, drive wheels, and tracks. The guide wheel assemblies and drive wheels are located at the front and rear ends of the tracks, respectively. Each load-bearing wheel assembly is located between the drive wheel and the guide wheel assembly. The track is fitted between the drive wheel and each wheel assembly to ensure that the rotation of the drive wheel can drive the track to roll, thus enabling the normal use of the tracked system.

[0004] In the aforementioned patent, each load-bearing wheel assembly has a rearward-biased structure. The load-bearing wheel assembly located at the end of the installation is installed adjacent to the drive wheel. When the load-bearing wheel assembly at the end of the installation encounters an obstacle, it will shift towards the drive wheel. The shift distance is set according to the track's operating environment. The larger the obstacle, the greater the distance between the drive wheel and the load-bearing wheel assembly, ensuring that there is a sufficiently large clearance between the drive wheel and the load-bearing wheel assembly to avoid contact between them during use. With this configuration, assuming the track's length in the direction of travel remains constant, the larger the obstacle in the track's application scenario, the shorter the distance between the first and last load-bearing wheel assemblies, i.e., the shorter the ground contact distance. A shorter ground contact distance increases vehicle vibration, not only reducing ride comfort but also accelerating fatigue wear on components such as track links, pins, and load wheel bearings, shortening the service life of the track drive system, and increasing maintenance frequency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a rearward-biased track structure that improves the swinging method of the road wheel assembly adjacent to the drive wheel. Instead of the conventional method of swinging the road wheel assembly along the vehicle body, it changes the method to swinging along the drive wheel, achieving rearward-biased movement. Simultaneously, a limiting arm restricts the distance between the road wheel assembly and the drive wheel. When the road wheel assembly encounters an obstacle, it can only swing along the center of the drive wheel under the action of the limiting arm, ensuring that the distance between the center of the drive wheel and the center of the road wheel assembly remains constant, thus avoiding various problems caused by the reduction in ground contact length during track movement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rearward biasing track structure, which is installed in conjunction with the vehicle body. The track structure includes a track, a drive wheel, a tension guide wheel assembly, a road wheel assembly, and multiple load wheel assemblies. The track is fitted onto the drive wheel, the tension guide wheel assembly, the road wheel assembly, and the multiple load wheel assemblies so that the track forms a ring structure.

[0007] Among them, the drive wheel and the tensioning guide wheel assembly are spaced apart, the load wheel set and multiple load wheel sets are spaced apart between the drive wheel and the guide tensioning wheel set, each load wheel set is swayed along the vehicle body, and each is provided with a first shock absorber between itself and the vehicle body;

[0008] The road wheel assembly is adjacent to the drive wheel, a second shock absorber is provided between the road wheel assembly and the vehicle body, and a limiting arm is provided between the road wheel assembly and the drive wheel to allow the road wheel assembly to swing along the axis of the drive wheel.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] Understandably, the track structure of this application is equivalent to an existing track drive system, connected to the vehicle body (or equipment). The various components work together to form a track drive system for effective driving. Correspondingly, the motor, reducer, etc., that work with the drive wheels are installed in conjunction with the vehicle body to ensure that the drive wheels can rotate under the action of the motor (or other driver) to drive the tracks.

[0011] The structure of the road wheel assembly is similar to that of existing road wheel assemblies (load-bearing wheel assemblies or load-bearing wheel assemblies), mainly consisting of two rolling wheels connected by an axle. A shock absorber (spring shock absorber) is installed between the road wheel assembly and the vehicle body. The difference is that in the prior art, the road wheel assembly is hinged to the vehicle body regardless of whether it is tilting backward or forward to ensure that each road wheel assembly rotates along the vehicle body during use. However, in this application, the road wheel assembly adjacent to the drive wheel is connected to the drive wheel through a limiting arm, so that the load rotates along the drive wheel during use. Due to the existence of the limiting arm, the distance between the center of the road wheel assembly and the center of the drive wheel is limited to a constant (basically equivalent to the length of the limiting arm). Therefore, no matter the size of the obstacle encountered or the position to which the road wheel assembly swings, the suspension distance is also constant and will not change with the size of the obstacle. This ensures that the entire drive system (track structure) has sufficient ground contact distance and guarantees the performance of the entire drive system.

[0012] Furthermore, the limiting arm has a Y-shaped frame structure, with a plug section and a connecting section. The plug section is inserted into the drive wheel along both sides and is rotatably connected to the drive wheel. The connecting section is connected to the load wheel assembly.

[0013] Furthermore, the drive wheel is also equipped with a noise reduction auxiliary component, which includes at least one disc.

[0014] The disc is located on one side of the drive wheel and is fixedly connected to the drive wheel so that the disc has an annular support platform coaxial with the drive wheel, wherein the limiting arm is located on the outside of the disc and is rotatably connected to the disc.

[0015] Furthermore, at least one support portion is provided on the connection side between the drive wheel and the disc, and the disc is inserted into the support portion and connected to the drive wheel through multiple connectors;

[0016] The support and multiple connectors are arranged in a ring around the drive wheel, and the support and multiple connectors are distributed adjacent to each other along the diameter direction of the drive wheel.

[0017] Furthermore, the support portion is a protruding structure extending outward along the drive wheel connection side, or

[0018] The support part is a recessed structure that is recessed inward along the connection side of the drive wheel.

[0019] Furthermore, the tension guide wheel assembly includes a connecting arm, an auxiliary wheel assembly, a tension wheel assembly, and a mounting base.

[0020] The mounting base is adjustable to the vehicle body position. The connecting arm is hinged to the mounting base. The auxiliary wheel assembly and the tension wheel assembly are rotatably connected to the connecting arm. The tension wheel assembly is located on the axial side of the auxiliary wheel assembly and is adjacent to the auxiliary wheel assembly. A third shock absorber is provided between the connecting arm and the mounting base. The connection end of the third shock absorber and the connecting arm is adjacent to the tension wheel assembly.

[0021] Furthermore, the mounting base includes a sliding seat and an adjusting seat, the adjusting seat is positioned on the sliding seat, the connecting arm is hinged to the adjusting seat, and the third shock absorber is hinged to the adjusting seat.

[0022] Furthermore, the adjusting seat is positioned on the sliding seat by adjusting the component.

[0023] The adjustment assembly includes an adjustment screw, which is threadedly connected to the adjustment seat and also connected to the sliding seat.

[0024] Furthermore, the adjusting seat is slidably connected to the sliding seat in the horizontal direction, and the adjusting seat is provided with a hinge and a connecting part in the vertical direction. The hinge is connected to the connecting arm, and the connecting part is connected to the third shock absorber.

[0025] Furthermore, the adjusting seat engages with the sliding seat and slides along the sliding seat. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the track structure of this utility model and its installation in conjunction with the vehicle body;

[0027] Figure 2This is a schematic diagram of a structure in which the drive wheel, the load-bearing wheel set, the body, and the drive unit cooperate in this utility model.

[0028] Figure 3 This is a schematic diagram of a possible arrangement of the drive wheel and the load-bearing wheel assembly of this utility model.

[0029] Figure 4 for Figure 3 A structural diagram from another perspective;

[0030] Figure 5 This is an exploded structural diagram of the connection between the drive wheel and the load-bearing wheel assembly in this utility model;

[0031] Figure 6 This is a connection structure diagram of the limiting arm, load-bearing shaft, and shock absorber in this utility model;

[0032] Figure 7 for Figure 6 A structural diagram from another perspective;

[0033] Figure 8 This is a schematic diagram of one structure of the limiting arm in this utility model;

[0034] Figure 9 This is a schematic diagram of a structure in which the drive wheel, disc, and track are coordinated.

[0035] Figure 10 This is an exploded structural diagram of the drive wheel and disc in this utility model;

[0036] Figure 11 This is a schematic diagram of one structure of the drive wheel and disc in this utility model;

[0037] Figure 12 This is a schematic diagram of one structure of the drive wheel in this utility model;

[0038] Figure 13 This is a schematic diagram of one structure of the disc in this utility model;

[0039] Figure 14 These are schematic diagrams of four different structures of the support portion in this utility model;

[0040] Figure 15 In this utility model and Figure 14 Schematic diagrams of four types of disc structures that coordinate with the supporting parts of the various components;

[0041] Figure 16 This is a schematic diagram of the connection structure between the tension guide wheel assembly and the track and body of this utility model;

[0042] Figure 17 This is a schematic diagram of the tensioning guide wheel assembly of this utility model and its connection structure with the vehicle body;

[0043] Figure 18 This is a schematic diagram of a tensioning guide wheel assembly in this utility model;

[0044] Figure 19 for Figure 18 A structural diagram from another perspective.

[0045] In the diagram: Load wheel assembly 600, first shock absorber 610, load wheel assembly 500, second shock absorber 510, limiting arm 520, insertion section 522, irregular arm 5221, annular connecting part 5222, extension section 5223, fixing section 5224, connecting section 521, shock-absorbing fixing block 530, load wheel 542, load shaft 541, drive wheel structure 200, drive wheel 220, support part 221, protrusion structure 2213, locking protrusion 2211, recessed groove 2214, groove 2212, disc 210, annular support platform 211, connecting plate 213, auxiliary support Support structure 2123, slot 2121, insert ring 2124, insert block 2122, weight reduction through groove 212, annular clearance groove 230, connector 240, connecting screw hole 241, track 100, auxiliary tooth ring 110, body 400, sliding adjustment groove 410, motor 420, reducer 430, tension guide wheel assembly 300, tension wheel group 310, tension wheel 311, auxiliary wheel group 320, auxiliary wheel 321, connecting arm 330, third shock absorber 340, mounting base 350, sliding base 351, adjusting base 352, adjusting screw 353, connecting base 354. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0047] like Figure 1As shown, a rearward-biased track structure is installed in conjunction with a vehicle body 400. This track structure includes a track 100, a drive wheel 220, a tension guide wheel assembly 300, a road wheel set 500, and multiple load wheel sets 600. The track 100 is fitted onto the drive wheel 220, the tension guide wheel assembly 300, the road wheel set 500, and the multiple load wheel sets 600, so that the track 100 forms a ring structure. The drive wheel 220 and the tension guide wheel assembly 300 are spaced apart, and the road wheel sets 500 and... Multiple load wheel sets 600 are spaced apart between the drive wheel 220 and the guide tension wheel set 311 310. Each load wheel set 600 is swayed along the vehicle body 400 and is provided with a first shock absorber 610 between itself and the vehicle body 400. The load wheel set 500 is adjacent to the drive wheel 220. A second shock absorber 510 is provided between the load wheel set 500 and the vehicle body 400. A limiting arm 520 is provided between the load wheel set 500 and the drive wheel 220 so that the load wheel set 500 sways along the axis of the drive wheel 220.

[0048] It is understood that the track 100 structure of this application is equivalent to the existing track 100 drive system, and is connected to the vehicle body 400 (or equipment). The various components cooperate effectively to form a track 100 drive system for use, thereby achieving the purpose of driving. Correspondingly, the motor 420, reducer 430, etc., which cooperate with the drive wheel 220, are installed in conjunction with the vehicle body 400 to ensure that the drive wheel 220 can rotate under the action of the motor 420 (or other driver) so as to drive the track 100 to roll.

[0049] The structure of the road wheel assembly 500 is similar to that of the existing road wheel assembly 500 (load-bearing wheel assembly or load-bearing wheel assembly 600), mainly consisting of two rolling wheels connected by an axle. A shock absorber (spring shock absorber) is provided between the road wheel assembly 500 and the vehicle body 400. The difference is that in the prior art, the road wheel assembly 500 is hinged to the vehicle body 400 regardless of whether it is tilting backward or forward to ensure that each road wheel assembly 500 rotates along the vehicle body 400 during use; while in this application, the road wheel assembly 500 adjacent to the drive wheel 220 is connected by a limiting arm 520. Connected to the drive wheel 220, the load rotates along the drive wheel 220 during use. Due to the presence of the limiting arm 520, the distance between the center of the load wheel assembly 500 and the center of the drive wheel 220 is essentially constant (basically equal to the length of the limiting arm 520). Therefore, regardless of the volume of the obstacle encountered or the position to which the load wheel assembly 500 swings, the suspension distance remains constant and will not change with the volume of the obstacle. This ensures that the entire drive system (track 100 structure) has sufficient ground contact distance, guaranteeing the various performance characteristics of the entire drive system.

[0050] When the drive wheel 220 and the load-bearing wheel assembly 500 are installed, they are arranged with their axes parallel. Therefore, in order for the load-bearing wheel assembly 500 to swing along the drive wheel 220, the limiting arm 520 needs to be set on both sides of the drive wheel 220 and rotatably connected to it. This ensures that the rotation of the drive wheel 220 is not affected, and the swing of the load-bearing wheel assembly 500 along the drive wheel 220 is also unaffected. Therefore, in this application, the limiting arm 520 is located on one side of the drive wheel 220, coaxially set and rotatably connected to the drive wheel 220. If the limiting arm 520 is a common rod-shaped structure, and considering that the drive wheel 220 has two sides, under normal circumstances, only one limiting arm 520 is needed to achieve the swing of the load-bearing wheel assembly 500 along the drive wheel 220. To increase the stability of the load-bearing wheel assembly 500, when using a rod-shaped limiting arm 520, a limiting arm 520 can be connected to both the inner and outer sides of the drive wheel 220. The two limiting arms 520 are connected to the drive wheel 220 and the load-bearing wheel assembly 500 respectively by rotational clamping, so as to ensure that the load-bearing wheel assembly 500 swings along the drive wheel 220.

[0051] In this application, the structure of the limiting arm 520 is designed in conjunction with the mechanism of the drive wheel 220 and the load-bearing wheel assembly 500, such as... Figure 8 As shown, specifically, the limiting arm 520 has a Y-shaped frame structure. The limiting arm 520 has a socket section 522 and a connecting section 521. The socket section 522 is inserted into the drive wheel 220 along both sides of the drive wheel 220 and is rotatably connected to the drive wheel 220. The connecting section 521 is connected to the load wheel assembly 500. The socket section 522 of the limiting arm 520 has two irregular arms 5221. The two irregular arms 5221 are detachably connected to the connecting section 521 to form the socket section 522. The structure of each irregular arm 5221 has a ring connecting part 5222 adapted to the installation of the drive wheel 220, an extension section 5223 that avoids the disc 210, and a fixing section 5224 for connecting with the connecting section 521. The ring connecting part 5222 is rotatably connected to the shaft connection structure in the middle of the drive wheel 220 through a bearing. Based on this irregular structure, it is adapted to the assembly structure of the drive wheel 220 and the disc 210 of this application. At the same time, the detachable connection of the plug section and the connecting section 521 can facilitate the overall production of the limit arm 520 and the assembly of each component.

[0052] To facilitate the connection between the limiting arm 520 and the load-bearing wheel assembly 500, the load-bearing wheel assembly 500 of this application includes two load-bearing wheels 542 arranged side by side and a load-bearing shaft 541 coaxially arranged with the two load-bearing wheels 542. The two load-bearing wheels 542 are located at both ends of the load-bearing shaft 541 and are rotatably connected to the load-bearing shaft 541 via bearings. The load-bearing shaft 541 is fixedly connected to the limiting arm 520. One end of the second shock absorber 510 can be connected to either the load-bearing shaft 541 or the limiting arm 520, such as... Figure 2-7As shown in this application, the lower end of the second shock absorber 510 is hinged to the connecting section 521, and the upper end of the second shock absorber 510 is hinged to the connecting seat on the vehicle body 400. The connecting seat is slidably connected to the vehicle body 400 and locked with bolts, which can be used to adjust the pressure of the second shock absorber 510 to ensure that the second shock absorber 510 is adapted to the entire track 100 drive mechanism.

[0053] In the prior art, the drive wheel 220 of the gear structure can only mesh with the track 100 simply. However, the drive wheel 220 basically mates with the middle of the annular structure of the track 100 (the width of the track 100 is greater than the thickness of the drive wheel 220). Since the drive wheel 220 is usually located in front of or behind the drive mechanism of the track 100, during the meshing process between the track 100 and the drive wheel 220, the rolling of the track 100 has an impact effect on the drive wheel 220 (due to the lack of support on the annular edge of the track 100). Therefore, noise and vibration are easily generated between the rotation of the drive wheel 220 and the track 100.

[0054] To address the aforementioned issues, the drive wheel 220 of this application is further provided with a noise reduction auxiliary component, which includes at least one disc 210. The drive wheel 220 and the two discs 210 constitute a drive wheel structure 200, which has a noise reduction function. To facilitate the installation of the discs 210 and the drive wheel 220, the disc 210 of this application is located on one side of the drive wheel 220 and connected to the drive wheel 220, so that the disc 210 has an annular support platform 211 coaxially arranged with the drive wheel 220; at least one support portion 221 is provided on the connection side between the drive wheel 220 and the disc 210, and the disc 210 is inserted into the support portion 221 and connected to the drive wheel 220 through multiple connectors 240; the support portion 221 and the multiple connectors 240 are respectively arranged in a ring along the drive wheel 220, and the support portion 221 and the multiple connectors 240 are distributed adjacently along the diameter direction of the drive wheel 220.

[0055] Understandably, the track 100 has various structures. Based on the structure of the track 100, the disc 210 and the drive wheel 220 can have various combinations. For example, when the track 100 has the structure described in the existing patent CN201510288339.0, the drive wheel is originally adapted to the track 100 of this structure. The drive wheel 220 is a columnar structure with a hollow cylinder. Multiple openings are made on the side wall of the hollow cylindrical structure, and the openings can cooperate with this type of track 100. Correspondingly, the disc 210 adopts a columnar structure. The disc 210 is attached to the drive wheel 220. Then, the circumference of the columnar disc 210 is the annular support platform 211, and the circular radius of the annular support platform 211 is larger than the cylindrical radius of the drive wheel 220 to ensure that the annular support platform 211 can support the annular edge of the track 100, and the drive wheel 220 can cooperate with the drive teeth in the middle of the track 100. Of course, the track 100 can also adopt the structure described in the existing patent CN201680068390.3. In this case, the drive wheel 220 is similar to a gear structure, and the annular center of this type of track 100 also has two auxiliary toothed rings 110 spaced apart. When the disc 210 and the drive wheel 220 cooperate, they need to avoid the auxiliary toothed rings 110. Therefore, the structure of the disc 210 is such that the outer side is higher than the inner side, and there is at least a clearance space. Correspondingly, the annular support platform 211 is the structure where the outer side of the disc 210 is located. The overall structure of the disc 210 can be trumpet-shaped, stepped cylindrical, etc., as long as it can support the annular edge of the track 100 on the outside, and the annular support platform 211 and the drive wheel 220 form a clearance space, without affecting the use of the auxiliary toothed rings 110.

[0056] It can be seen that regardless of the structure of the track 100, the combination of the drive wheel 220 and the disc 210 can be adapted to the track 100 with the corresponding structure, so that the drive wheel 220 can drive the track 100 to rotate. As long as the annular support platform 211 of the disc 210 can support the annular edge of the track 100, the disc 210 can rotate synchronously when the drive wheel 220 rotates. Moreover, the radius of the annular support platform 211 is adapted to the annular edge structure of the track 100, ensuring that during the engagement of the drive wheel 220 and the track 100, the annular support platform 211 can connect with the edge of the track 100 to support the edge of the track 100, thus achieving the purpose of silent driving.

[0057] like Figure 9-13As shown, in this application, the track 100 has the structure described in the prior art patent CN201680068390.3. Correspondingly, the drive wheel 220 is similar to a gear structure, and the disc 210 is a hollow truncated cone structure with a constriction facing the drive wheel 220. The truncated cone can be a square pyramid, a truncated cone, or a combination thereof, as long as the circumferential sidewall adjacent to the large end of the disc 210 has a circular support platform 211 structure. In this application, as... Figure 10 , 11 As shown, the disc 210 is a hollow truncated cone structure. The small end of the disc 210 has an outwardly extending annular connecting plate 213. The connecting plate 213 is connected to the drive wheel 220. After the disc 210 is connected to the drive wheel 220, the annular support platform 211 and the drive wheel 220 are spaced apart and form an annular clearance groove 230. The annular clearance groove 230 is used for the movement of each tooth structure on the auxiliary tooth ring 110 on the track 100.

[0058] Since the drive wheel 220 mainly mates with the annular center of the track 100, therefore, as Figure 9 , 10 As shown in Figure 11, in this application, a disc 210 is provided on each side of the drive wheel 220, which can support the two annular edges of the track 100, further ensuring the silent driving effect.

[0059] To ensure that the support portion 221 provides support to the disk 210 along the diameter of the drive wheel 220, there can be one or more support portions 221, distributed along the diameter of the drive wheel 220. The support portion 221 can be a structure formed by multiple support plates arranged in a ring (the support plates can be simple straight plates, curved plates, etc.), a ring-shaped enclosure structure, or a ring-shaped groove 2212 structure. When the disk 210 is inserted into the support portion 221, the connection point between the disk 210 and the drive wheel 220 must have a recessed or protruding structure adapted to the support portion 221 to achieve the insertion of the disk 210 into the support portion 221. The annular support platform 211 is located near the periphery of the drive wheel 220. Since the compressive force on the disc 210 is directed towards the inside of the drive wheel 220, the support 221 and multiple connectors 240 are arranged along the diameter of the drive wheel 220. This allows the support 221 to provide additional support force at the connection point between the support 221 and the disc 210, in addition to the force exerted by the multiple connectors 240 (bolts, etc.). This counteracts the downward pressure on the disc 210 during use, thereby increasing the connection stability between the disc 210 and the drive wheel 220 and extending the service life of the overall drive wheel structure.

[0060] In some embodiments of this application, when the overall thickness of the drive wheel 220 is relatively thin, the support portion 221 can adopt a protruding structure that protrudes outward along the connecting side of the drive wheel 220. The protruding structure can be a circular protruding structure, a square protruding structure, or multiple plate-shaped protruding structures, etc. Then, as long as the disc 210 has a snap-fit ​​structure that cooperates with the outer side of the protruding structure, the support portion 221 can provide support force along the force direction of the disc 210, offset the force on each connecting member 240, increase the connection strength between the disc 210 and the drive wheel 220, and improve the overall service life of the drive wheel structure 200.

[0061] Specifically, when the support 221 is a protruding structure extending along the drive wheel 220, such as... Figure 14 As shown in (1) and (3), the support 221 can also be a ring-shaped protrusion structure 2213 or multiple protrusions 2211 arranged in a ring. The protrusion structure 2213 can be a circular, square or other ring-shaped structure; each protrusion 2211 can be a common straight plate structure, an arc-shaped plate structure, etc. Similarly, the ring structure surrounded by each protrusion 2211 can also be a circular or square ring.

[0062] In accordance with the structure of the support part 221 described above, in order for the disk 210 to be inserted into the support part 221, as follows: Figure 15 As shown in (1) and (3), the disk 210 has at least an annular auxiliary support structure 2123 sleeved on the outside of the protrusion structure 2213, or the disk 210 has multiple slots 2121 for inserting each protrusion 2211.

[0063] When the support part 221 is an annular protrusion structure 2213, the auxiliary support structure 2123 cooperates with the protrusion structure 2213. The auxiliary support structure 2123 can be an annular groove structure opened on the connecting plate 213, and the annular groove structure is engaged with the outside of the protrusion structure 2213. Alternatively, the auxiliary support structure 2123 can be an annular hole structure, which is the inner side of the connecting plate 213. In this case, the annular hole structure fits perfectly on the outside of the protrusion structure 2213. Therefore, when the auxiliary support structure 2123 cooperates with the protrusion structure 2213, it can also provide support along the force direction of the disk 210 to provide additional support force to counteract the downward pressure on the disk 210 during use, thereby increasing the connection stability between the disk 210 and the drive wheel 220 and increasing the service life of the overall drive wheel structure.

[0064] When the support portion 221 has multiple latching protrusions 2211, each latching groove 2121 is formed on the connecting plate 213, and its distribution structure is the same as that of each latching protrusion 2211, ensuring that each latching groove 2121 can be engaged with each latching protrusion 2211. Alternatively, the latching groove 2121 can also be a latching block provided on the connecting plate 213, with the latching blocks connected along the inner or outer side of the connecting plate 213. The latching groove 2121 can be a through groove structure or a blind groove structure.

[0065] like Figure 10-13 As shown, in one embodiment of this application, the protrusion structure 2213 is a circular ring structure, the connecting plate 213 is a circular annular plate structure, the connecting plate 213 is sleeved on the outside of the protrusion structure 2213, and the inner sidewall structure of the connecting plate 213 is equivalent to the auxiliary support structure 2123.

[0066] In some embodiments of this application, when the thickness of the drive wheel 220 is sufficiently large, the support portion 221 can also be a recessed structure that is recessed inward along the connection side of the drive wheel 220. Similarly, the recessed structure can be an annular groove structure or a recessed structure formed by multiple groove structures. The disc 210 is provided with a plug-in structure that can be inserted into the recessed structure, so that after the disc 210 and the support portion 221 are connected, the support portion 221 provides support along the force direction of the disc 210, providing additional support force to counteract the downward pressure on the disc 210 during use, thereby increasing the connection stability between the disc 210 and the drive wheel 220 and increasing the service life of the overall drive wheel structure.

[0067] Based on the structural design of the protruding support portion 221, the recessed support portion 221 can also have a similar structure, such as... Figure 14 As shown in (2) and (4), the support portion 221 can be an annular recessed groove 2214 or a plurality of grooves 2212 arranged in a ring. Correspondingly, as Figure 15 As shown in (1) and (3), when the disc 210 is engaged with the recessed groove 2214, the connecting plate 213 of the disc 210 is provided with a protruding insert ring 2124 that is inserted into the recessed groove 2214; when the disc 210 is engaged with each groove 2212, the disc 210 has multiple insert blocks 2122 for inserting into each groove 2212.

[0068] In some embodiments of this application, the connector 240 is a connecting bolt, which is used to connect the connecting plate 213 and the drive wheel 220. Multiple connectors 240 are arranged in a ring along the axis of the drive wheel 220, and are located between the annular clearance groove 230 and the support portion 221. Figure 10 , 11As shown in Figures 12 and 13, multiple sets of connecting screw holes 241 are provided on the connecting side of the drive wheel 220 and the connecting plate 213 respectively. Each connecting bolt passes through the corresponding set of connecting screw holes 241 to realize the connection between the connecting plate 213 and the drive wheel 220.

[0069] To facilitate the connection of the connector 240 and further reduce the weight of the disk 210 and the energy consumption of the driver (drive motor) connected to the drive wheel 220, this application provides multiple weight-reducing slots 212 on the circumferential sidewall of the disk 210. The weight-reducing slots 212 facilitate the connector 240 to pass through the connecting plate 213 to connect the connecting plate 213 and the drive wheel 220, and also reduce the overall weight of the disk 210 by utilizing the hollow structure.

[0070] It is worth noting that the support portions 221 on both sides of the drive wheel 220 can adopt the same structure or a combination of different structures. The drive wheel 220 is made of steel or cast iron, and the disc 210 is made of aluminum alloy, plastic parts (engineering plastics), lightweight materials (light alloys), etc.

[0071] In the prior art (CN201610622972.3), the tension guide wheel assembly 300 and the vehicle body 400 are connected at multiple points. This means that the shock absorber needs a connection point with the vehicle body 400, and the swing arm structure of the tension guide wheel assembly 300 also needs to be connected to the vehicle body 400. The relative positions of the shock absorber, the tension guide wheel assembly 300, and the vehicle body 400 all need to be adjusted to match the tension of the track 100. However, with the existing installation method, adjusting and connecting the tension guide wheel assembly 300 and the vehicle body 400 requires setting multiple connection points on the vehicle body 400, which compromises the structural stability of the vehicle body 400 and reduces its service life. During adjustment, the shock absorber and the tension guide wheel assembly 300 also need to be fixed separately, making the installation process cumbersome. Therefore, this application improves the structure of the tension guide wheel assembly 300 to avoid the above problems.

[0072] Specifically, the tensioning guide wheel assembly 300 includes a connecting arm 330, an auxiliary wheel assembly 320, a tensioning wheel assembly 310, a third shock absorber 340, and a mounting base 350. The mounting base 350 is installed in an adjustable position. The connecting arm 330 is hinged to the mounting base 350. The auxiliary wheel assembly 320 and the tensioning wheel assembly 310 are respectively connected to the connecting arm 330. The tensioning wheel assembly 310 is located on the axial side of the auxiliary wheel assembly 320 and is adjacent to the auxiliary wheel assembly 320. The third shock absorber 340 is installed between the mounting base 350 and the connecting arm 330, and the connection end of the third shock absorber 340 and the connecting arm 330 is adjacent to the tensioning wheel assembly 310.

[0073] Understandably, the auxiliary wheel set 320 and tension wheel set 310 are existing wheel set structures, mainly consisting of two rotating wheels arranged side by side. These two rotating wheels are arranged side-by-side along the width of the track 100 and respectively roll in contact with the track 100. The auxiliary wheel set 320 and tension wheel set 310 can have two contact points with the track 100. Specifically, as... Figure 17 , 18 As shown in Figure 19, the auxiliary wheel assembly 320 includes two auxiliary wheels 321 arranged side by side and an auxiliary shaft coaxially arranged with the two auxiliary wheels 321 and rotating relative to them. The two auxiliary wheels 321 are located at both ends of the auxiliary shaft and are rotatably connected to the auxiliary shaft through rotating bearings or other rotating components. Each auxiliary wheel 321 is in rolling contact with the track 100, and the middle part of the auxiliary shaft is fixedly connected to the connecting arm 330. Therefore, when the track 100 rotates under the action of the drive wheel, each auxiliary wheel 321 provides support force without affecting the rolling of the track 100. Similarly, the tension wheel assembly 310 includes two tension wheels 311 arranged side by side and a tension shaft coaxially arranged with the two tension wheels 311 and rotating relative to them. The two tension wheels 311 are located at both ends of the tension shaft and are rotatably connected to the tension shaft through rotating bearings or other rotating components. Each tension wheel 311 is in rolling contact with the track 100, and the middle part of the tension shaft is fixedly connected to the connecting arm 330. When the track 100 rotates under the action of the drive wheel, each tensioning wheel 311 can provide support force without affecting the rolling of the track 100.

[0074] The connecting arm 330 acts as a connector, linking the auxiliary wheel assembly 320, the mounting base 350, and the tensioning wheel assembly 310. Therefore, the connecting arm 330 can be any structure that achieves this function, such as a plate structure or a bracket structure. When using the tensioning mechanism of this application, it is necessary to ensure that the tensioning wheel assembly 310 and the auxiliary wheel assembly 320 are always in contact with the track 100. Therefore, the tensioning wheel assembly 310 and the auxiliary wheel assembly 320 need to swing along the vehicle body 400 under the action of the connecting arm 330. Correspondingly, to achieve this function, such as... Figure 16 , 17 As shown in Figures 18 and 19, the connecting arm 330 of this application is rotatably connected to the hinge shaft on the mounting base 350, and the hinge shaft is parallel to the auxiliary shaft and the tensioning shaft. Therefore, the hinge point of the connecting arm 330 and the mounting base 350, the rotation point of the auxiliary wheel assembly 320 (the position of the auxiliary shaft axis), and the rotation point of the tensioning wheel assembly 310 (the position of the tensioning shaft axis) can form a triangular positioning on the same plane. By adjusting the position of the mounting base 350 on the vehicle body 400, the tension of the track 100 can be adjusted.

[0075] The third shock absorber 340 is a shock-absorbing spring. One end of the third shock absorber 340 is hinged to the mounting base 350, and the other end is hinged to the connecting arm 330. When the tensioning mechanism is in use, the auxiliary wheel set 320 and the tensioning wheel set 310 can swing along the hinge point between the connecting arm 330 and the mounting base 350. At the same time, it can also ensure that the auxiliary wheel set 320 and the tensioning wheel set 310 are always in contact with the track 100, with two contact fulcrums, ensuring the stability of the track 100 in use.

[0076] The auxiliary wheel assembly 320 and tension wheel assembly 310 can be installed in various ways depending on the overall layout. For example, if the tension wheel assembly 310 is located diagonally above the auxiliary wheel assembly 320, then the third shock absorber 340 is connected above the tension wheel assembly 310. Alternatively, the tension wheel assembly 310 can be located diagonally below the auxiliary wheel assembly 320, in which case the third shock absorber 340 is connected below the tension wheel assembly 310. Both layouts allow the auxiliary wheel assembly 320 and tension wheel assembly 310 to swing around the hinge point between the connecting arm 330 and the mounting base 350.

[0077] The mounting base 350 facilitates the assembly of the entire tensioning guide wheel assembly and allows for the adjustment of the track tension 100 by adjusting the mounting position of the mounting base 350 on the vehicle body 400. Furthermore, connecting the third shock absorber 340 to the mounting base 350 reduces the number of additional connection points required on the vehicle body 400. This makes the tensioning mechanism of this application easy to install on the vehicle body 400 and reduces the layout of mounting points on the vehicle body 400, which is beneficial for the simplified design of the vehicle body 400.

[0078] To facilitate the adjustment of the positions of the mounting base 350 and the vehicle body 400, a sliding adjustment groove 410 can be provided on the side wall (connecting side) of the vehicle body 400. The mounting base 350 can slide to a suitable position in the sliding adjustment groove 410, and then multiple locking bolts can be used to realize the position adjustment of the mounting base 350 and the vehicle body 400, thereby facilitating the installation and tension adjustment of the track 100.

[0079] Since different third shock absorbers 340 have different factory preloads, fine-tuning is required during assembly according to on-site installation requirements. To achieve this function, this application adopts a split-type mounting base 350. Specifically, as shown... Figure 17 , 18As shown in Figure 19, the mounting base 350 includes a sliding base 351 and an adjusting base 352. The adjusting base 352 is positioned on the sliding base 351. The connecting arm 330 is hinged to the adjusting base 352, and the third shock absorber 340 is hinged to the adjusting base 352. The sliding base 351 is a horizontal block structure that fits into the sliding adjusting groove 410. The sliding base 351 has a sliding block embedded in the sliding adjusting groove 410 to allow the sliding base 351 to slide along the sliding adjusting groove 410. The sliding base 351 is provided with multiple locking holes, and the vehicle body 400 is provided with multiple sets of connecting holes that are adapted to the locking holes (each set has multiple connecting holes that match the multiple locking holes). After the locking holes and the corresponding connecting holes coincide, the sliding base 351 and the vehicle body 400 can be fixed in different positions by using locking bolts. When the sliding seat 351 is connected to the vehicle body 400, the tension adjustment of the tensioning mechanism and the track 100 can be basically limited. In order to further enable the third shock absorber 340 to reach the best working state, the adjusting seat 352 of this application is connected to the sliding seat 351 in a different position to achieve fine adjustment of the preload of the third shock absorber 340.

[0080] Specifically, to achieve the conditions for adjusting seat 352 and sliding seat 351, the adjusting seat 352 of this application is positioned on the sliding seat 351 by adjusting components, such as... Figure 17 , 18 As shown, the adjusting assembly includes an adjusting screw 353, which extends along the sliding direction of the sliding seat 351. The adjusting screw 353 is connected to a connecting seat 354 on the sliding seat 351, and also passes through the adjusting seat 352, where it is threadedly connected. A locking nut is also provided on the adjusting screw 353. Rotating the locking nut locks the adjusting screw 353 to the connecting seat 354, thus locking the adjusting screw to the connecting seat 354 (sliding seat 351). At this time, the adjusting seat 352 is locked to the sliding seat 351. Rotating the locking nut unlocks the adjusting screw 353 and the connecting seat 354. Rotating the adjusting screw 353 then changes the position of the adjusting seat 352 on the sliding seat 351, thereby adjusting the position of the adjusting seat 352 and the sliding seat 351. Of course, the adjusting screw 353 and the sliding seat 351 and adjusting seat 352 can also be connected in other ways to achieve a changeable position of the adjusting seat 352 on the sliding seat 351. The adjusting seat 352 needs to be slidably set on the sliding seat 351. Since the sliding seat 351 is in contact with the side wall of the vehicle body 400, there is a sliding gap between the sliding seat 351 and the vehicle body 400. In order to increase the sliding stability of the adjusting seat 352 and the sliding seat 351, and in combination with the structural characteristics of the vehicle body 400, such as Figure 18 , 19As shown, the adjusting seat 352 covers the sliding seat 351 in the vertical direction, and the adjusting seat 352 has a locking part in the vertical direction. The two locking parts are respectively locked between the sliding seat 351 and the vehicle body 400 in the vertical direction, so that the adjusting seat 352 and the sliding seat 351 are locked and slidably connected.

[0081] In this application, the tensioning pulley assembly 310 is located diagonally above the auxiliary pulley assembly 320. Correspondingly, the third shock absorber 340 is located above the tensioning pulley assembly 310. Based on the limitation of the installation position, and to facilitate the connection between the connecting arm 330 and the adjusting seat 352, as well as the connection between the third shock absorber 340 and the adjusting seat 352, as follows... Figure 18 , 19 As shown, the adjusting seat 352 has a hinge and a connecting part in the vertical direction. The hinge is connected to the connecting arm 330, and the connecting part is connected to the third shock absorber 340. The connection and hinge parts facilitate the installation of the connecting arm 330 and the third shock absorber 340.

[0082] This application improves the structure of the existing tensioning mechanism, making the overall tensioning mechanism more compact and easier to install, while also making the track 100 run more smoothly.

[0083] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0084] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0085] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rearward-biased track structure, installed in conjunction with a vehicle body (400), characterized in that: The track structure includes a track (100), a drive wheel (220), a tension guide wheel assembly (300), a road wheel assembly (500), and multiple load wheel assemblies (600). The track (100) is fitted onto the drive wheel (220), the tension guide wheel assembly (300), the road wheel assembly (500), and the multiple load wheel assemblies (600) so that the track (100) forms a ring structure. Among them, the drive wheel (220) and the tensioning guide wheel assembly (300) are spaced apart, the load wheel set (500) and multiple load wheel sets (600) are spaced apart between the drive wheel (220) and the guide tensioning wheel set (310), each load wheel set (600) is swayed along the vehicle body (400), and each load wheel set (600) is provided with a first shock absorber (610) between itself and the vehicle body (400); The road wheel assembly (500) is adjacent to the drive wheel (220), a second shock absorber (510) is provided between the road wheel assembly (500) and the vehicle body (400), and a limiting arm (520) is provided between the road wheel assembly (500) and the drive wheel (220) so that the road wheel assembly (500) swings along the axis of the drive wheel (220).

2. The rearward-aligning track structure according to claim 1, characterized in that: The limiting arm (520) has a Y-shaped frame structure. The limiting arm (520) has a plug section (522) and a connecting section (521). The plug section (522) is plugged into the drive wheel (220) along both sides of the drive wheel (220) and is rotatably connected to the drive wheel (220). The connecting section (521) is connected to the load wheel set (500).

3. The rearward-aligning track structure according to claim 1 or 2, characterized in that: The drive wheel (220) is also provided with a noise reduction auxiliary component, which includes at least one disc (210). The disc (210) is located on one side of the drive wheel (220) and is fixedly connected to the drive wheel (220) so that the disc (210) has an annular support platform (211) coaxially arranged with the drive wheel (220), wherein the limiting arm (520) is located on the outside of the disc (210) and is rotatably connected to the disc (210).

4. The rearward-aligning track structure according to claim 3, characterized in that: At least one support (221) is provided on the connection side between the drive wheel (220) and the disc (210). The disc (210) is inserted into the support (221) and connected to the drive wheel (220) through multiple connectors (240). The support (221) and multiple connectors (240) are arranged in a ring along the drive wheel (220), and the support (221) and multiple connectors (240) are distributed adjacent to each other along the diameter direction of the drive wheel (220).

5. The rearward-aligning track structure according to claim 4, characterized in that: The support part (221) is a protruding structure that extends outward along the connection side of the drive wheel (220), or The support part (221) is a recessed structure that is recessed inward along the connection side of the drive wheel (220).

6. The rearward-aligning track structure according to claim 1, 2, 4 or 5, characterized in that: The tension guide wheel assembly (300) includes a connecting arm (330), an auxiliary wheel assembly (320), a tension wheel assembly (310), and a mounting base (350). The mounting base (350) is installed in an adjustable position on the vehicle body (400). The connecting arm (330) is hinged to the mounting base (350). The auxiliary wheel assembly (320) and the tension wheel assembly (310) are rotatably connected to the connecting arm (330). The tension wheel assembly (310) is located on the axial side of the auxiliary wheel assembly (320) and is adjacent to the auxiliary wheel assembly (320). A third shock absorber (340) is provided between the connecting arm (330) and the mounting base (350). The connection end of the third shock absorber (340) and the connecting arm (330) is adjacent to the tension wheel assembly (310).

7. The rearward-aligning track structure according to claim 6, characterized in that: The mounting base (350) includes a sliding base (351) and an adjusting base (352). The adjusting base (352) is positioned on the sliding base (351). The connecting arm (330) is hinged to the adjusting base (352). The third shock absorber (340) is hinged to the adjusting base (352).

8. The rearward-aligning track structure according to claim 7, characterized in that: The adjusting seat (352) is positioned on the sliding seat (351) by means of the adjusting component. The adjustment assembly includes an adjustment screw (353), which is threadedly connected to an adjustment seat (352) and connected to a sliding seat (351).

9. The rearward-aligning track structure according to claim 8, characterized in that: The adjusting seat (352) is slidably connected to the sliding seat (351) in the horizontal direction, and the adjusting seat (352) is provided with a hinge and a connecting part in the vertical direction. The hinge is connected to the connecting arm (330), and the connecting part is connected to the third shock absorber (340).

10. The rearward-aligning track structure according to any one of claims 6-9, characterized in that: The adjusting seat (352) is engaged with the sliding seat (351) and slidably connected along the sliding seat (351).

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