Adaptive tensioning idler assembly and tracked vehicle

Abstract

This utility model discloses an adaptive tensioning idler wheel assembly and a tracked vehicle. The adaptive tensioning idler wheel assembly includes an idler wheel unit, a rocker arm unit, and an adaptive adjuster. The idler wheel unit includes a first idler wheel, a second idler wheel, and an idler wheel central shaft, with a first support sleeve disposed between the first and second idler wheels. The rocker arm unit includes a rocker arm body and a lower hinge point shaft. The rocker arm body has a first end and a second end disposed opposite to each other along its length. The first end has a first hole for the idler wheel central shaft to pass through, and a second support sleeve is disposed between the first end and the first idler wheel. The second end has a second hole for the lower hinge point shaft to pass through. A groove is provided at the top of the first end of the rocker arm body. One end of the adaptive adjuster is hinged to the rocker arm body, and this end is located within the groove. This idler wheel assembly is easy to install and disassemble and can adaptively tension the track.

Description

Technical Field

[0001] This utility model relates to an adaptive tensioning idler wheel assembly and a tracked vehicle. Background Technology

[0002] Currently, existing rubber tracks are generally one-piece structures that cannot be separated. The inner wall of the track has guide teeth. Some tracked vehicles require high-speed driving, turning, and lateral movement on soft sand or off-road surfaces. In these cases, higher guide teeth are used to prevent the track from slipping off. Guide teeth can straighten the track while the vehicle is moving, and also prevent the dangerous situation of the track slipping off when the vehicle is turning or tilting. Assembling this type of one-piece track with high guide teeth presents significant assembly challenges.

[0003] In addition, tracked vehicles are trending towards lightweight development, making the various structural parts of tracked vehicles lighter while ensuring rigidity and strength. Utility Model Content

[0004] In view of this, one objective of this utility model is to provide an adaptive tensioning idler wheel assembly that is easy to install and disassemble and can adaptively adjust according to the track tension. Another objective of this utility model is to provide a tracked vehicle.

[0005] This utility model can achieve at least some of the above-mentioned objectives.

[0006] On the one hand, this utility model provides an adaptive tensioning inducer assembly, including an inducer unit, a rocker arm unit, and an adaptive adjuster;

[0007] The inducer wheel unit includes a first inducer wheel, a second inducer wheel, and an inducer wheel central shaft. The first inducer wheel and the second inducer wheel are parallel to each other and are sleeved on the inducer wheel central shaft. A first support sleeve is provided between the two.

[0008] The rocker arm unit includes a rocker arm body and a lower hinge point shaft; the rocker arm body has a first end and a second end arranged opposite to each other along its length direction, the first end is provided with a first hole, the first hole is configured to allow the central shaft of the inducer wheel to pass through, and a second support sleeve is provided between the first end and the first inducer wheel; the second end is provided with a second hole, the second hole is configured to allow the lower hinge point shaft to pass through; a groove is provided on the top of the first end of the rocker arm body;

[0009] One end of the adaptive adjuster is hinged to the rocker arm body, and this end is located within the groove. This adaptive tensioning idler assembly can adapt to track tension. Two independent idlers are used, separated by a support sleeve for easy installation and disassembly.

[0010] In this invention, the support sleeve includes a first support sleeve, a second support sleeve, and a third support sleeve. The first support sleeve is disposed between the first and second inducer wheels, and the second support sleeve is disposed between the rocker arm and the first inducer wheel. This arrangement is used to adjust the installation position of the inducer wheels, ensuring that the inducer wheel assembly can be correctly installed on both sides of the inducer teeth, thus providing support and guidance. The third support sleeve is disposed on the outside of the second inducer wheel to support and protect it. The third support sleeve can be made of materials commonly used in the art, such as stainless steel, which helps ensure strength. The first and second support sleeves can be made of aluminum alloy, which helps reduce weight.

[0011] In this invention, the groove has a first sidewall and a second sidewall arranged opposite to each other. Both the first sidewall and the second sidewall have an arc-shaped structure, and each sidewall is provided with a pin hole for setting a pin.

[0012] The rocker arm has a relatively simple structure and can be integrally machined from high-strength forged aluminum alloy, resulting in high strength. The adaptive adjuster can adjust the rocker arm, which in turn adjusts the first and second idler wheels, thereby tensioning the track.

[0013] According to the adaptive tensioning inducer assembly of this utility model, preferably, the adaptive adjuster includes a vibration damping support body, a first ball joint bearing, a second ball joint bearing, and a spring; the vibration damping support body is composed of a thick section and a thin section, one end of the thick section is provided with an upper stop block, and the thick section has a receiving cavity filled with buffer putty; one end of the thin section is provided with a lower stop block, and the other end of the thin section has a T-shaped cross-section, at least a portion of which is located in the receiving cavity and is configured to move along the length direction of the vibration damping support body within the receiving cavity, thereby forming a buffer cavity; the first ball joint bearing is connected to one side of the lower stop block and is located away from the upper stop block, and the first ball joint bearing is located within the groove; the second ball joint bearing is connected to one side of the upper stop block and is located away from the lower stop block; the spring is wound around the outer surface of the vibration damping support body and is located between the upper stop block and the lower stop block. This allows for adaptive adjustment to tension the track.

[0014] In this invention, along the length of the adaptive adjuster, there are sequentially arranged a second ball joint bearing, an upper stop block, a spring, a lower stop block, and a first ball joint bearing. The upper and lower stop blocks are used to limit the spring's movement. Due to the presence of the buffer cavity, the distance between the upper and lower stop blocks can be reduced or increased, causing the spring to shorten or lengthen between them. This facilitates adaptive adjustment and track tensioning.

[0015] The inner and outer rings of the first and second ball bearings have arc-shaped moving surfaces, which ensures that the adaptive adjuster works at different angles to adapt to the track tension.

[0016] In this invention, the cushioning putty serves a cushioning function. The materials used for the cushioning putty can be those known in the art, and will not be elaborated here.

[0017] According to the adaptive tensioning inducer assembly of this utility model, preferably, the outer contours of both the upper stop block and the lower stop block are circular. This makes the structure compact and helps to reduce weight.

[0018] According to the adaptive tensioning inducer assembly of this utility model, preferably:

[0019] The groove has a first sidewall and a second sidewall that are arranged opposite to each other, and both sidewalls are provided with pin holes;

[0020] The adaptive tensioning inducer assembly also includes a pin; the pin is configured to pass sequentially through a pin hole on the first side wall, a first ball joint bearing, and a pin hole on the second side wall to hinge the adaptive adjuster to the rocker arm body. This facilitates installation and disassembly. The adaptive adjuster can rotate about the pin.

[0021] According to the adaptive tensioning inducer assembly of this utility model, preferably, the pin shaft has an oil inlet hole along its length and an oil outlet hole along its radial direction, and the oil inlet hole and the oil outlet hole are connected; the central axis of the oil inlet hole coincides with the central axis of the pin shaft. This facilitates the replenishment of lubricating oil and allows lubricating oil to be injected when the adaptive adjuster generates high frictional resistance during rotation, thereby reducing friction.

[0022] According to the adaptive tensioning inducer assembly of this utility model, preferably, the outer contour of the rocker arm body is an elliptical-like structure, with elongated weight-reduction holes on both sides. This reduces weight while maintaining strength.

[0023] According to the adaptive tensioning inducer assembly of this utility model, preferably, the first and second sidewalls of the groove are both arc-shaped. This reduces weight and facilitates the installation of other parts.

[0024] According to the adaptive tensioning inducer assembly of this utility model, preferably, the inducer unit further includes a sealing ring and a third support sleeve;

[0025] The sealing ring is sleeved on the central shaft of the inducer wheel and is used to limit the first inducer wheel and the second inducer wheel;

[0026] The third support sleeve is fitted onto the central shaft of the inducer wheel and is located on the side of the second inducer wheel away from the first inducer wheel. This helps to improve the stability of the inducer wheel assembly and extend its service life.

[0027] According to the adaptive tensioning inducer assembly of this utility model, preferably, the central shaft of the inducer is provided with an oil injection hole along its length and an oil drain hole along its radial direction; there is one or more oil drain holes; the oil injection hole and the oil drain hole are connected. This facilitates the replenishment of lubricating oil. According to a specific embodiment of this utility model, there are two oil drain holes. The positions of the two oil drain holes correspond to the positions of the first inducer and the second inducer, respectively, so that lubricating oil can be replenished to the center of the first inducer and the second inducer using the oil drain holes. This allows lubricating oil to be injected when the first inducer and the second inducer generate large frictional resistance during rotation, reducing friction and ensuring normal use.

[0028] On the other hand, this utility model also provides a tracked vehicle, including a frame assembly, tracks, and an adaptive tensioning idler wheel assembly as described above, wherein the rocker arm unit is movably connected to the frame assembly via a lower hinge point shaft and a sliding bearing; the adaptive adjuster is movably connected to the frame assembly via an upper hinge point shaft; and the adaptive tensioning idler wheel assembly is configured to tension the tracks.

[0029] The adaptive tensioning idler assembly of this invention is easy to assemble and disassemble and can adapt to different track tension conditions. Furthermore, it is lightweight, has strong tensioning capacity, high reliability, and good stability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the adaptive tensioning inducer assembly of this utility model.

[0031] Figure 2 This is a partial schematic diagram of the rocker arm unit of this utility model.

[0032] Figure 3 for Figure 1 A cross-sectional diagram in one direction.

[0033] Figure 4 for Figure 1 A cross-sectional view from another direction.

[0034] Figure 5 This is a schematic diagram of the adaptive adjuster of this utility model.

[0035] Figure 6 for Figure 5 A cross-sectional schematic diagram.

[0036] Figure 7This is a cross-sectional schematic diagram of the pin used in this utility model.

[0037] Figure 8 This is a cross-sectional schematic diagram of the central shaft of the inducer wheel of this utility model.

[0038] Figure 9 This is a schematic diagram showing the relative positions of the adaptive tensioning idler wheel assembly, the frame assembly, and the tracks of this utility model.

[0039] The annotations in the attached figures are explained as follows:

[0040] 711-First inducer wheel, 712-Second inducer wheel, 713-Inducer wheel central shaft, 715-First support sleeve, 714-Second support sleeve, 716-Third support sleeve, 717-Sealing ring; 7131-Oil injection hole, 7133-Oil drain hole, 7132-Central shaft oil cup;

[0041] 72-Rock arm unit, 721-First hole, 722-Second hole, 723-Groove, 724-Lower hinge point shaft, 725-Sliding bearing, 726-Adjusting pad;

[0042] 73-Adaptive adjuster, 7301-Buffer chamber, 7311-First ball joint bearing, 7312-Second ball joint bearing, 732-Upper stop block, 733-Lower stop block, 734-Spring;

[0043] 74-Pin, 742-Oil outlet; 75-Upper hinge point shaft.

[0044] 30 - Tracks, 40 - Chassis assembly. Detailed Implementation

[0045] 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.

[0046] Example 1

[0047] like Figures 1 to 8 As shown, this embodiment provides an adaptive tensioning inducer assembly, including an inducer unit, a rocker arm unit 72, and an adaptive adjuster 73.

[0048] like Figure 1 and Figure 3As shown, the inducer unit includes a first inducer 711, a second inducer 712, an inducer central shaft 713, a first support sleeve 715, a second support sleeve 714, a third support sleeve 716, and a sealing ring 717. The first inducer 711 and the second inducer 712 are parallel to each other and are both sleeved on the inducer central shaft 713, with the first support sleeve 715 positioned between them. The sealing ring 717 is an O-ring, which is sleeved on the inducer central shaft 713 and used to limit the movement of the first inducer 711 and the second inducer 712. The third support sleeve 716 is sleeved on the inducer central shaft 713 and is located on the side of the second inducer 712 away from the first inducer 711. Alternatively, the third support sleeve 716 can also be provided on the side of the rocker arm body away from the second inducer 712, and this third support sleeve 716 is also sleeved on the inducer central shaft 713.

[0049] like Figure 4 and Figure 8 As shown, the central shaft 713 of the inducer wheel has a fixed end and a free end arranged opposite each other along its length. The diameter of the fixed end is larger than the diameter of the free end, and the free end is provided with an external thread. An oil injection hole 7131 is provided along the length of the central shaft 713 near the fixed end, and an oil drain hole 7133 is provided along its radial direction. The oil injection hole 7131 and the oil drain hole 7133 are connected. There is one or more oil drain holes 7133, for example, two. One oil drain hole 7133 is located near the middle of the central shaft 713, corresponding to the position of the first inducer wheel 711, and the other oil drain hole 7133 is located corresponding to the position of the second inducer wheel 712, thereby facilitating lubrication of the first inducer wheel 711 and the second inducer wheel 712. The central axis of the oil injection hole 7131 coincides with the central axis of the central shaft 713. A central shaft oil cup 7132 is provided near the fixed end of the central shaft for injecting oil into the oil injection hole 7131.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, the rocker arm unit 72 includes a rocker arm body and a lower hinge point shaft 724. The rocker arm body has a first end and a second end disposed opposite each other along its length. The first end has a first hole 721 through which the central shaft 713 of the inducer wheel passes. The first hole 721 matches the central shaft 713 of the inducer wheel. A second support sleeve 714 is disposed between the first end and the first inducer wheel 711. The second end has a second hole 722 through which the lower hinge point shaft 724 passes. The second hole 722 matches the lower hinge point shaft 724. The diameter of the second hole 722 is larger than the diameter of the first hole 721. The outer contour of the rocker arm body has a structure similar to an ellipse, and elongated weight-reducing holes are provided on both sides.

[0051] like Figure 1 , Figure 2 and Figure 4 As shown, a groove 723 is provided on the top of the first end of the rocker arm body. The groove 723 has a first sidewall and a second sidewall disposed opposite to each other, and a pin hole is provided on both the first sidewall and the second sidewall for the pin 74 to pass through. The pin hole matches the pin 74. Both the first sidewall and the second sidewall of the groove 723 have an arc-shaped structure.

[0052] like Figure 1 , Figures 4 to 6 As shown, one end of the adaptive adjuster 73 is hinged to the rocker arm body, and this end is located within the groove 723. The adaptive adjuster 73 includes a vibration damping support body, a first ball joint bearing 7311, a second ball joint bearing 7312, and a spring 734. The vibration damping support body consists of a thick section and a thin section. The thick section is cylindrical. The diameter of the thick section is larger than the diameter of the thin section. An upper stop 732 is provided at one end of the thick section, and the upper stop 732 is circular. The diameter of the upper stop 732 is larger than the diameter of the thick section. The thick section has a receiving cavity filled with cushioning putty. A lower stop 733 is provided at one end of the thin section, and the shape and size of the lower stop 733 are the same as those of the upper stop 732. The other end of the thin segment has a T-shaped cross-section (the cross-section passing through the center line of the thin segment at this end is T-shaped). At least a portion of this T-shaped structure is located within the receiving cavity and can move within the receiving cavity along the length of the vibration damping support body, thereby forming a buffer cavity 7301. A first ball joint bearing 7311 is connected to one side of the lower stop 733 and is located away from the upper stop 732. The first ball joint bearing 7311 is located within the groove 723. A second ball joint bearing 7312 is connected to one side of the upper stop 732 and is located away from the lower stop 733. A spring 734 is wound around the outer surface of the vibration damping support body and is located between the upper stop 732 and the lower stop 733.

[0053] like Figure 1 , Figure 4 and Figure 7 As shown, the pin 74 passes sequentially through the pin hole on the first side wall of the groove 723, the first ball bearing 7311, and the pin hole on the second side wall of the groove 723 to hinge the adaptive adjuster 73 to the rocker arm body.

[0054] The pin 74 has an oil inlet hole (unmarked) along its length and an oil outlet hole 742 along its radial direction. The oil inlet hole and the oil outlet hole 742 are connected, and the central axis of the oil inlet hole coincides with the central axis of the pin 74. The oil outlet hole 742 is located near the middle of the pin 74. The pin 74 has a fixed end and a free end. The oil inlet hole is located near the fixed end of the pin. An oil cup can also be provided at the fixed end of the pin for injecting oil into the oil inlet hole.

[0055] Example 2

[0056] This embodiment provides a tracked vehicle, including a frame assembly 40, tracks 30, and an adaptive tensioning idler wheel assembly as described in Embodiment 1. Figure 3 , Figure 4 and Figure 9 As shown, the rocker arm unit 72 is movably connected to the frame assembly 40 via a lower hinge point shaft 724 and a sliding bearing 725, specifically a rotatable connection, allowing the rocker arm unit 72 to rotate around the lower hinge point shaft 724. An adjusting shim 726 is fitted onto the lower hinge point shaft 724, and the adjusting shim 726 and the sliding bearing 725 are positioned opposite each other, located on opposite sides of the second end of the rocker arm body. The adaptive adjuster 73 is movably connected to the frame assembly 40 via an upper hinge point shaft 75, specifically a rotatable connection, allowing the adaptive adjuster 73 to rotate around the upper hinge point shaft 75. The adaptive tensioning idler wheel assembly can tension the track 30.

[0057] 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 self-adapting tensioning idler assembly, characterized in that, Includes an idler wheel unit, a rocker arm unit, and an adaptive adjuster; The inducer wheel unit includes a first inducer wheel, a second inducer wheel, and an inducer wheel central shaft. The first inducer wheel and the second inducer wheel are parallel to each other and are sleeved on the inducer wheel central shaft. A first support sleeve is provided between the two. The rocker arm unit includes a rocker arm body and a lower hinge point shaft; the rocker arm body has a first end and a second end arranged opposite to each other along its length direction, the first end is provided with a first hole, the first hole is configured to allow the central shaft of the inducer wheel to pass through, and a second support sleeve is provided between the first end and the first inducer wheel; the second end is provided with a second hole, the second hole is configured to allow the lower hinge point shaft to pass through; a groove is provided on the top of the first end of the rocker arm body; One end of the adaptive adjuster is hinged to the rocker arm body, and this end is located within the groove.

2. The self-tensioning inducer wheel assembly of claim 1, wherein, The adaptive adjuster includes a vibration damping support body, a first ball joint bearing, a second ball joint bearing, and a spring. The vibration damping support body consists of a thick section and a thin section. One end of the thick section is provided with an upper stop block, and the thick section has a receiving cavity filled with buffer putty. One end of the thin section is provided with a lower stop block, and the other end of the thin section has a T-shaped cross-section. At least a portion of the T-shaped structure is located within the receiving cavity and is configured to move within the receiving cavity along the length direction of the vibration damping support body, thereby forming a buffer cavity. The first ball joint bearing is connected to one side of the lower stop block and is located away from the upper stop block, and is situated within the groove. The second ball joint bearing is connected to one side of the upper stop block and is located away from the lower stop block. The spring is wound around the outer surface of the vibration damping support body and is located between the upper and lower stop blocks.

3. The self-tensioning inducer wheel assembly of claim 2, wherein, The outer contours of both the upper and lower blocks are circular.

4. The adaptive tensioning inducer assembly according to claim 2, characterized in that: The groove has a first sidewall and a second sidewall that are arranged opposite to each other, and both sidewalls are provided with pin holes; The adaptive tensioning inducer assembly also includes a pin; the pin is configured to pass sequentially through a pin hole on the first side wall, a first ball joint bearing, and a pin hole on the second side wall to hinge the adaptive adjuster to the rocker arm body.

5. The self-tensioning inducer wheel assembly of claim 4, wherein, The pin has an oil supply hole along its length and an oil outlet hole along its radial direction, and the oil supply hole and the oil outlet hole are connected; the central axis of the oil supply hole coincides with the central axis of the pin.

6. The self-tensioning inducer wheel assembly of claim 4, wherein, The outer contour of the rocker arm body is similar to an elliptical structure, and long strip-shaped weight reduction holes are provided on both sides.

7. The self-tensioning inducer wheel assembly of claim 4, wherein, The first and second sidewalls of the groove are both arc-shaped structures.

8. The self-tensioning inducer wheel assembly of any of claims 1-7, wherein, The inducer unit also includes a sealing ring and a third support sleeve; The sealing ring is sleeved on the central shaft of the inducer wheel and is used to limit the first inducer wheel and the second inducer wheel; The third support sleeve is fitted onto the central shaft of the inducer wheel and is located on the side of the second inducer wheel away from the first inducer wheel.

9. The self-tensioning inducer wheel assembly of claim 8, wherein, The central shaft of the inducer wheel is provided with an oil injection hole along its length and an oil drain hole along its radial direction; there is one or more oil drain holes; the oil injection hole and the oil drain hole are connected.

10. A tracked vehicle characterized by, The system includes a frame assembly, tracks, and an adaptive tensioning idler assembly as described in any one of claims 1 to 9, wherein the rocker arm unit is movably connected to the frame assembly via a lower hinge point shaft and a sliding bearing; the adaptive adjuster is movably connected to the frame assembly via an upper hinge point shaft; and the adaptive tensioning idler assembly is configured to tension the tracks.

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