Track tensioning structure with shock absorption

Abstract

The utility model discloses a track tensioning structure with damping, including connecting arm, auxiliary wheel group, tensioning wheel group, shock absorber and mounting seat, and mounting seat adjustable position installation is hinged to connecting arm and mounting seat, and auxiliary wheel group, tensioning wheel group are connected with connecting arm respectively, and tensioning wheel group is located the axial side of auxiliary wheel group and is adjacent to the setting of auxiliary wheel group, and shock absorber is installed between mounting seat and connecting arm, and the connecting end of shock absorber and connecting arm is adjacent to tensioning wheel group. The cooperation of connecting arm, auxiliary wheel group, tensioning wheel group of the application can realize three point positioning, and the cooperation of auxiliary wheel group, tensioning wheel group and track makes the whole tensioning mechanism and track have two contact fulcrums, in the use process, auxiliary wheel group, tensioning wheel group move in the position change under the action of connecting arm, but can provide better tension, ensure that the track is not loose, and the tension change in the process that more adapts the track meets the obstacle, ensure the operation stability of track.

Description

Technical Field

[0001] This utility model relates to the field of tensioning mechanism technology, and in particular to a track tensioning structure with shock absorption. Background Technology

[0002] The tensioning structure is an important component of the track drive system, mainly used to adjust the tension of the track to ensure that the track is in optimal working condition.

[0003] In the prior art, as shown in the patent application with patent number CN202410864716.X entitled "Modular Electric Drive Track for Mobile Robot", the tensioning mechanism (guide tensioning device) mainly includes a guide wheel assembly and a support arm. A spring is provided between the support arm and the guide wheel assembly. By adjusting the installation position of the support arm and cooperating with the use of the spring, the track is tensioned to meet the optimal working condition.

[0004] In the aforementioned patent, the guide wheel assembly consists of two guide wheels arranged side by side. The two guide wheels are parallel along the width of the track and are respectively connected to the track in a rolling manner. The guide wheel assembly and the track have only one contact fulcrum. When the track passes over obstacles of different volumes, the track tension changes. Due to the presence of the spring, the position of the guide wheel assembly will change rapidly in a short time. This change is more pronounced when there are multiple obstacles with significant volume changes. The contact point between the track and the guide wheel assembly may separate, resulting in poor track running stability. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a track tensioning structure with shock absorption. The cooperation of the connecting arm, auxiliary wheel assembly, and tensioning wheel assembly enables three-point positioning. The cooperation of the auxiliary wheel assembly, tensioning wheel assembly, and track provides the entire tensioning mechanism and track with two contact fulcrums. During use, the auxiliary wheel assembly and tensioning wheel assembly move in different positions under the action of the connecting arm, but can provide good tension to ensure that the track does not loosen. It is more adaptable to the tension changes of the track during obstacle encounters, ensuring the running stability of the track.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a track tensioning structure with shock absorption, comprising a connecting arm, an auxiliary wheel assembly, a tensioning wheel assembly, a shock absorber, and a mounting base.

[0007] The mounting base is adjustable in position. The connecting arm is hinged to the mounting base. The auxiliary wheel set and the tension wheel set are connected to the connecting arm respectively. The tension wheel set is located on the axial side of the auxiliary wheel set and is adjacent to the auxiliary wheel set. The shock absorber is installed between the mounting base and the connecting arm, and the connection end of the shock absorber and the connecting arm is adjacent to the tension wheel set.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] Understandably, the auxiliary wheel set and tension wheel set are existing wheel set structures, mainly consisting of two rotating wheels arranged side by side. The two rotating wheels are arranged side by side along the width of the track and respectively roll in contact with the track. The auxiliary wheel set and tension wheel set can have two contact points with the track.

[0010] The connecting arm can be a plate-like structure, a bracket structure, etc., and is mainly used to connect the auxiliary wheel set and the tension wheel set. The connection between the connecting arm and the mounting seat allows the hinge point of the connecting arm and the mounting seat, the rotation point of the auxiliary wheel set (the position of the rotating wheel axis), and the rotation point of the tension wheel set (the position of the rotating wheel axis) to form a triangular positioning on the same plane. By adjusting the position of the mounting seat on the vehicle body, the tension of the track can be adjusted.

[0011] The shock absorber is a shock-absorbing spring. One end of the shock absorber is hinged to the mounting base, and the other end is hinged to the connecting arm. When the tensioning mechanism is in use, the auxiliary wheel set and the tensioning wheel set can swing along the hinge point between the connecting arm and the mounting base. At the same time, it can ensure that the auxiliary wheel set and the tensioning wheel set are always in contact with the track, with two contact fulcrums, ensuring the stability of the track in use.

[0012] The auxiliary wheel assembly and tension wheel assembly can be installed in various ways depending on the overall layout. For example, if the tension wheel assembly is located diagonally above the auxiliary wheel assembly, the shock absorber can be connected above the tension wheel assembly. Alternatively, the tension wheel assembly can be located diagonally below the auxiliary wheel assembly, in which case the shock absorber can be connected below the tension wheel assembly. Both layouts allow the auxiliary wheel assembly and tension wheel assembly to swing around the hinge point between the connecting arm and the mounting base.

[0013] The mounting base facilitates the assembly of the entire tensioning assembly and allows for track tension adjustment by adjusting the mounting position of the mounting base on the vehicle body. Furthermore, connecting the shock absorber to the mounting base reduces the number of additional connection points required on the vehicle body. This makes the tensioning mechanism of this application easy to install on the vehicle body and reduces the number of mounting points on the vehicle body, which is beneficial for the simplified design of the vehicle body.

[0014] 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 shock absorber is hinged to the adjusting seat.

[0015] Furthermore, the adjusting seat is positioned on the sliding seat by adjusting the component.

[0016] The adjustment assembly includes an adjustment screw, which is threadedly connected to the adjustment seat and also connected to the sliding seat.

[0017] 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 shock absorber.

[0018] Furthermore, the adjusting seat engages with the sliding seat and slides along the sliding seat.

[0019] Furthermore, the auxiliary wheel assembly includes two auxiliary wheels arranged side by side and an auxiliary shaft coaxially with the two auxiliary wheels and rotating relative to them. The auxiliary shaft is connected to the connecting arm.

[0020] The connecting arm is rotatably connected to the hinge shaft on the mounting base, and the hinge shaft is parallel to the auxiliary shaft.

[0021] Furthermore, the tensioning wheel assembly includes two tensioning wheels arranged side by side and a tensioning shaft coaxially arranged with the two tensioning wheels and rotating relative to them. The tensioning shaft is connected to the connecting arm and is parallel to the hinge shaft. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection structure between the tensioning structure and the track and the vehicle body according to this utility model;

[0023] Figure 2 This is a schematic diagram of the tensioning structure and its connection structure with the vehicle body according to this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of this utility model;

[0025] Figure 4 for Figure 3 A structural diagram from another perspective.

[0026] In the diagram: Track 100, Tensioning structure 300, Tensioning wheel assembly 310, Tensioning wheel 311, Auxiliary wheel assembly 320, Auxiliary wheel 321, Connecting arm 330, Shock absorber 340, Mounting seat 350, Sliding seat 351, Adjusting seat 352, Adjusting screw 353, Connecting seat 354, Body 400, Sliding adjustment groove 410. Detailed Implementation

[0027] 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.

[0028] like Figure 1 , 2As shown in Figures 3 and 4, a track tensioning structure with shock absorption is disclosed. The tensioning structure 300 includes a connecting arm 330, an auxiliary wheel assembly 320, a tensioning wheel assembly 310, a 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 shock absorber 340 is installed between the mounting base 350 and the connecting arm 330, and the connection end of the shock absorber 340 and the connecting arm 330 is adjacent to the tensioning wheel assembly 310.

[0029] 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 2 , 3 As shown in Figure 4, 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 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.

[0030] 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 1 , 2As shown in Figures 3 and 4, 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.

[0031] The shock absorber 340 is a shock-absorbing spring. One end of the 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.

[0032] 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, the shock absorber 340 can be 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 shock absorber 340 can be 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.

[0033] The mounting base 350 facilitates the assembly of the entire tensioning 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 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.

[0034] 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.

[0035] Since different 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 follows... Figure 2 , 3As shown in Figure 4, 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 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 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 shock absorber 340.

[0036] 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 2 , 3 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 3 , 4As 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.

[0037] In this application, the tensioning pulley assembly 310 is located diagonally above the auxiliary pulley assembly 320. Correspondingly, the 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 shock absorber 340 and the adjusting seat 352, as follows... Figure 3 , 4 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 shock absorber 340. The connection and hinge facilitate the installation of the connecting arm 330 and the shock absorber 340.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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 track tensioning structure with shock absorption, characterized in that: Includes a connecting arm (330), an auxiliary wheel assembly (320), a tensioning wheel assembly (310), a 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 tension wheel assembly (310) are respectively 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). The shock absorber (340) is installed between the mounting base (350) and the connecting arm (330). The connection end of the shock absorber (340) and the connecting arm (330) is adjacent to the tension wheel assembly (310).

2. The track tensioning structure with shock absorption according to claim 1, 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), and the shock absorber (340) is hinged to the adjusting base (352).

3. The track tensioning structure with shock absorption according to claim 2, 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).

4. The track tensioning structure with shock absorption according to claim 2, 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 shock absorber (340).

5. The track tensioning structure with shock absorption according to claim 3, 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 shock absorber (340).

6. The track tensioning structure with shock absorption according to claim 4 or 5, characterized in that: The adjusting seat (352) is engaged with the sliding seat (351) and slidably connected along the sliding seat (351).

7. The track tensioning structure with shock absorption according to any one of claims 1-5, characterized in that: 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 auxiliary shaft is connected to the connecting arm (330). The connecting arm (330) is rotatably connected to the hinge shaft on the mounting base (350), and the hinge shaft is parallel to the auxiliary shaft.

8. The track tensioning structure with shock absorption according to claim 7, characterized in that: The tensioning wheel assembly (310) includes two tensioning wheels (311) arranged side by side and a tensioning shaft that is coaxial with the two tensioning wheels (311) and rotates relative to them. The tensioning shaft is connected to the connecting arm (330) and is parallel to the hinge shaft.

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