Caterpillar for electric drive crawler vehicle with anti-loosening structure

Abstract

The present application relates to the field of track, and discloses a track piece with anti-loosening structure for electric track-type vehicle, which comprises a track shoe, a plurality of connecting blocks are arranged in horizontal array on both sides of the track shoe, the track shoes are arranged in array, the connecting blocks at the corresponding positions of the track shoes are adapted to each other, a pressing plate structure is arranged on one side of the bottom of the track shoe, a pressing plate is arranged on the bottom of the pressing plate structure, and a fixing member is symmetrically arranged on both sides of the top of the pressing plate. The track piece provided by the present application can significantly reduce the mechanical wear of the connecting piece of the track shoe during actual use, prolong the service life of the bolt shaft and the bushing, and improve the reliability of the track under complex working conditions. The locking head can absorb and attenuate high-frequency vibration energy, preventing the loosening of the bolt. The continuous pressing effect of the locking head forms a mechanical anti-loosening structure, enhances the positioning effect of the bolt shaft, and improves the safety and durability of the track system under high-frequency impact operation conditions.

Description

Technical Field

[0001] This invention relates to the field of track technology, specifically to a track component with an anti-loosening structure for an electric tracked vehicle. Background Technology

[0002] The patent application with publication number CN118419163A includes a tensioning component and an anti-loosening component. The tensioning component is adapted to be mounted on the track wheel assembly and is used to tension the track. The anti-loosening component includes a first road arm, a second road arm, and a road wheel. The first road arm is rotatably mounted on the track wheel assembly, the second road arm is rotatably connected to the first road arm, and the road wheel is rotatably mounted at both ends of the second road arm. The road wheel is adapted to tension the track. The advantages are: during the movement of the tracked vehicle, the tensioning component continuously applies tension to the track to ensure that the track is in a taut state. Simultaneously, the anti-loosening component can provide tension compensation for the track, thereby increasing the track tension during obstacle crossing on various road surfaces and long-term driving to prevent track loosening, avoid track slippage, and increase the stability of the track wheel assembly and the service life and cycle of the track.

[0003] In most of the aforementioned patents or existing technologies, track anti-loosening structures achieve anti-loosening by tensioning the track plates. However, the main reason affecting the lifespan of the track plate structure is excessive wear between the track plate connectors. Tensioning the track plates can delay wear to some extent but cannot completely solve the wear problem. Furthermore, when tracked vehicles are stationary and performing fixed-point operations, the high load and high frequency exert a large load on the track plates bearing the bottom pressure, and there is a certain probability that vibration will cause the track plate structural components to loosen, affecting the service life. Summary of the Invention

[0004] The problem this invention aims to solve is that excessive wear of the track plate connectors and the high pressure load on the bottom track plates during vehicle stationary operation, coupled with the high-frequency vibrations during operation, can cause the connectors to loosen.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a track component with an anti-loosening structure for an electric tracked vehicle, comprising track plates, wherein a plurality of connecting blocks are arranged in a horizontal array on both sides of the track plates, the track plates are arranged in an array, the connecting blocks at corresponding positions of the plurality of track plates are adapted to each other, a pressure plate structure is provided on one side of the bottom of the track plate, a pressure plate is provided at the bottom of the pressure plate structure, and fixing members are symmetrically arranged on both sides of the top of the pressure plate, wherein one side of the fixing member is fixedly connected to one side of the connecting block by a first bolt.

[0006] Preferably, the bottom of the fixing member is rotatably connected to a movable plate, and a first spring is provided on one side of the top of the movable plate, with the top of the first spring being fixedly connected to the bottom of the fixing member.

[0007] Preferably, a pin structure is provided between the two track plates. The pin structure includes a bushing, the outer arc surface of which is adapted to the inner arc surface of the connecting block. An elastic groove is provided on one side of the bushing, a pin shaft is provided on the inner arc surface of the bushing, and washers are provided at both ends of the bushing.

[0008] Preferably, a support block is rotatably connected to one side of the movable plate, a top block is provided on the inner wall of the support block, a second spring is provided on the top of the top block, rubber blocks are symmetrically arranged on both sides of the top of the top block, and sliders are symmetrically arranged on the top of both sides of the top block.

[0009] Preferably, the inner wall of the support block is provided with sliding grooves on both sides, the sliding grooves are adapted to the slider, the top of the support block is adapted to the bushing, and the bottom of the fixing member is adapted to the bushing.

[0010] Preferably, the top of the movable plate is provided with a locking frame, and the top of the locking frame is provided with a locking head, the top of the locking head being adapted to both ends of the pin shaft.

[0011] Preferably, two buffer strips are symmetrically arranged on one side of the top of the pressure plate.

[0012] Preferably, the bottom of the movable plate, the locking frame, and the top of the pressure plate are fitted together by a second bolt.

[0013] Preferably, the bottom of the track plate is provided with anti-slip teeth, the top of the track plate is provided with a plurality of road wheels, and the sides of the plurality of road wheels are provided with drive wheels.

[0014] Preferably, the top of the track plate is provided with drive teeth, which are adapted to the drive wheel.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0016] (1) By rationally setting the pressure plate structure and the support block, the mechanical wear of the track plate connectors during actual use is significantly reduced. Specifically, when the track plate runs to the bottom and contacts the ground, the vehicle's own weight causes the pressure plate in the pressure plate structure to be subjected to an upward flipping force, which in turn drives the support block to move towards the bushing. During the movement, the support block applies a radially inward contraction force to the bushing, causing the bushing to undergo slight elastic deformation through the elastic groove opened on its side, thereby ensuring that the inner arc surface of the bushing and the outer surface of the pin shaft are tightly fitted. This fitting state can effectively eliminate the gap between the pin shaft and the bushing, significantly reduce the lateral traction force generated by vehicle steering and the additional friction and shear wear caused by the vehicle's own weight on the pin shaft, extend the service life of the pin shaft and the bushing, and improve the operational reliability of the track system under complex working conditions. The present invention further provides an effective means of suppressing the connection loosening problem of tracked vehicles in high-frequency vibration working environments by setting a locking frame and a rubber locking head. When vehicles perform high-frequency impact operations such as hydraulic breakers and vibratory compaction, the hexagonal bolts typically installed at both ends of the pin shaft are prone to gradually loosening due to continuous vibration, leading to instability of the track connection structure. To address this, the present invention features a locking frame at the top of the movable plate, with a rubber locking head mounted at the top. During the pressure plate structure's flipping process, this locking head is pushed upwards and tightly abuts against the hexagonal bolts at both ends of the pin shaft. The rubber material possesses excellent elasticity and damping properties, absorbing and attenuating high-frequency vibration energy, preventing the bolts from rotating and loosening due to vibration. Simultaneously, the continuous pressing action of the locking head forms a mechanical anti-loosening structure, further enhancing the axial and radial positioning effect of the pin shaft. This effectively prevents excessive wear and structural failure of the track connectors caused by vibration, improving the safety and durability of the track system under high-frequency impact operating conditions.

[0017] (2) The modular pin structure design significantly improves the maintainability and economy of the track system. Specifically, the bushing, as a key wear component in the track plate connection process, will gradually reach its wear limit due to long-term radial pressure and relative rotational friction from the pin shaft. When the bushing needs to be replaced, the operator only needs to pull the pin shaft out of the connecting block to release the bushing's restriction. Then, the worn bushing can be removed from the inner arc surface of the connecting block and replaced with a new bushing. Finally, the pin shaft can be reinserted to complete the maintenance. This process does not require complex operations such as disassembly, cutting, or welding of the track plate itself, nor does it require replacing the entire track plate or a large area of ​​the track assembly due to wear of a single connecting component. Compared with the traditional track structure where the bushing and track plate are integrally formed or difficult to disassemble, this invention greatly simplifies the maintenance process and reduces the time and labor costs required for maintenance. Meanwhile, since only the locally worn parts—the bushings—need to be replaced, while other structural components such as the pin shafts and track shoes can continue to be used, the overall scrapping caused by the failure of a single component is effectively avoided, thus extending the overall service life of the track system and improving the economy and efficiency of tracked vehicles throughout their entire life cycle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a side view of the overall structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the track plate structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the track plate structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the pressure plate structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the pressure plate structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the pressure plate structure of the present invention;

[0025] Figure 8 This is an exploded view of the pressure plate structure of the present invention;

[0026] Figure 9 For the present invention Figure 3 A magnified view of part A shown below;

[0027] Figure 10 For the present invention Figure 5 A magnified view of part B shown below;

[0028] Figure 11For the present invention Figure 10 A magnified view of a portion at point C is shown.

[0029] In the diagram: 1. Track plate; 2. Drive wheel; 3. Road wheel; 4. Drive tooth; 5. Connecting block; 6. Anti-slip tooth; 7. Pressure plate structure; 701. Buffer strip; 702. Pressure plate; 703. Fixing component; 704. First spring; 705. Movable plate; 706. Support block; 707. Locking frame; 708. Locking head; 709. Top block; 710. Second spring; 711. First bolt; 712. Second bolt; 713. Rubber block; 714. Sliding block; 715. Slide groove; 8. Pin structure; 801. Bushing; 802. Elastic groove; 803. Washer; 804. Pin shaft. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0031] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0032] like Figures 1 to 11 As shown, the present invention provides a track component with an anti-loosening structure for an electric tracked vehicle, comprising track plates 1, characterized in that: a plurality of connecting blocks 5 are arranged in a horizontal array on both sides of the track plates 1, the track plates 1 are arranged in an array, the connecting blocks 5 at corresponding positions of the plurality of track plates 1 are adapted to each other, a pressure plate structure 7 is provided on one side of the bottom of the track plate 1, a pressure plate 702 is provided at the bottom of the pressure plate structure 7, and fixing members 703 are symmetrically arranged on both sides of the top of the pressure plate 702, and one side of the fixing member 703 is fixedly connected to one side of the connecting block 5 by a first bolt 711.

[0033] The bottom of the fixing member 703 is rotatably connected to a movable plate 705. A first spring 704 is provided on one side of the top of the movable plate 705. The top of the first spring 704 is fixedly connected to the bottom of the fixing member 703.

[0034] A pin structure 8 is provided between the two track plates 1. The pin structure 8 includes a bushing 801. The outer arc surface of the bushing 801 is adapted to the inner arc surface of the connecting block 5. An elastic groove 802 is provided on one side of the bushing 801. A pin shaft 804 is provided on the inner arc surface of the bushing 801. Washers 803 are provided at both ends of the bushing 801.

[0035] A support block 706 is rotatably connected to one side of the movable plate 705. A top block 709 is provided on the inner wall of the support block 706. A second spring 710 is provided on the top of the top block 709. Rubber blocks 713 are symmetrically arranged on both sides of the top of the top of the top block 709. Slider blocks 714 are symmetrically arranged on the top of both sides of the top block 709.

[0036] The inner wall of the support block 706 has grooves 715 on both sides, which are adapted to the slider 714. The top of the support block 706 is adapted to the bushing 801, and the bottom of the fixing member 703 is adapted to the bushing 801.

[0037] The top of the movable plate 705 is provided with a locking frame 707, and the top of the locking frame 707 is provided with a locking head 708. The top of the locking head 708 is adapted to both ends of the pin shaft 804.

[0038] Two buffer strips 701 are symmetrically arranged on one side of the top of the pressure plate 702.

[0039] The bottom of the movable plate 705 and the locking bracket 707 and the top of the pressure plate 702 are matched by the second bolt 712.

[0040] The bottom of the track plate 1 is provided with anti-slip teeth 6, the top of the track plate 1 is provided with several road wheels 3, and the sides of the several road wheels 3 are provided with drive wheels 2.

[0041] The top of the track plate 1 is provided with drive teeth 4, which are adapted to drive wheels 2.

[0042] The working principle and usage of this invention are as follows: During the movement of the tracked vehicle, the track, composed of multiple track plates 1, will rotate around the drive wheel 2 and the road wheel 3. When the corresponding track plate 1 rotates to the bottom and contacts the ground, the pressure plate 702 of the pressure plate structure 7 set between the corresponding track plates 1 simultaneously contacts the ground and flips upward under the influence of the vehicle's own weight. At the same time, it drives the movable plate 705 on the pressure plate to flip upward, and pushes the bushing 801 through the support block 706 to generate an inward contraction force, causing the bushing 801 to undergo slight deformation through the elastic groove 802, ensuring that the inner arc surface of the bushing 801 is completely... The locking effect is achieved by fitting the pin shaft 804, preventing additional unnecessary wear on the pin shaft 804 caused by lateral traction and vehicle weight during vehicle steering. At the same time, the locking bracket 707 on the movable plate 705 uses a rubber locking head 708 to abut against the hexagonal bolts at both ends of the pin shaft 804, preventing the pin shaft from loosening due to high-frequency vibration when tracked vehicles such as excavators are using hydraulic breakers for ground breaking operations, thus preventing accelerated track wear. When the bushing 801 reaches its wear limit, the pin shaft 804 can be pulled out and the bushing 801 can be replaced for continued use.

[0043] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A track component with an anti-loosening structure for an electric tracked vehicle, comprising track plates (1), characterized in that: Both sides of the track plate (1) are provided with several connecting blocks (5) arranged in a horizontal array. The track plates (1) are arranged in an array, and the connecting blocks (5) at corresponding positions of the track plates (1) are adapted to each other. A pressure plate structure (7) is provided on one side of the bottom of the track plate (1). A pressure plate (702) is provided at the bottom of the pressure plate structure (7). Fixing members (703) are symmetrically arranged on both sides of the top of the pressure plate (702). One side of the fixing member (703) is fixedly connected to one side of the connecting block (5) by a first bolt (711).

2. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: The bottom of the fixing member (703) is rotatably connected to a movable plate (705), and a first spring (704) is provided on one side of the top of the movable plate (705). The top of the first spring (704) is fixedly connected to the bottom of the fixing member (703).

3. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: A pin structure (8) is provided between the two track plates (1). The pin structure (8) includes a bushing (801). The outer arc surface of the bushing (801) is adapted to the inner arc surface of the connecting block (5). An elastic groove (802) is provided on one side of the bushing (801). A pin shaft (804) is provided on the inner arc surface of the bushing (801). Washers (803) are provided at both ends of the bushing (801).

4. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: A support block (706) is rotatably connected to one side of the movable plate (705). A top block (709) is provided on the inner wall of the support block (706). A second spring (710) is provided on the top of the top block (709). Rubber blocks (713) are symmetrically arranged on both sides of the top of the top of the top block (709). Slider blocks (714) are symmetrically arranged on the top of both sides of the top block (709).

5. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: The inner wall of the support block (706) is provided with grooves (715) on both sides. The grooves (715) are adapted to the slider (714). The top of the support block (706) is adapted to the bushing (801). The bottom of the fixing member (703) is adapted to the bushing (801).

6. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: The top of the movable plate (705) is provided with a locking frame (707), and the top of the locking frame (707) is provided with a locking head (708). The top of the locking head (708) is adapted to both ends of the pin shaft (804).

7. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: Two buffer strips (701) are symmetrically arranged on one side of the top of the pressure plate (702).

8. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: The bottom of the movable plate (705), the locking frame (707), and the top of the pressure plate (702) are fitted together by a second bolt (712).

9. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: The bottom of the track plate (1) is provided with anti-slip teeth (6), the top of the track plate (1) is provided with several load wheels (3), and the sides of the several load wheels (3) are provided with drive wheels (2).

10. A track component with an anti-loosening structure for an electric tracked vehicle according to claim 1, characterized in that: The top of the track plate (1) is provided with a drive tooth (4), which is adapted to the drive wheel (2).

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