A high-stability support roller

Abstract

This invention provides a highly stable support roller. Two support roller bodies are mounted at both ends of the same central shaft, which passes through the top of a diagonal support frame. The diagonal support frame is a V-shaped structure with an adjustable opening, and a converging mechanism is provided at the opening of the diagonal support frame to close the opening. A fixing frame is provided below the support roller body, and the diagonal support frame is located inside the fixing frame, with the bottom of the diagonal support frame in rolling contact with the bottom of the fixing frame. The fixing frame is fixedly mounted on a base. The support rollers of this invention are flexibly connected to the track frame, allowing for a certain relative displacement between the support rollers and the track frame, which can absorb vibration and buffer impact. In addition, with the flexible connection between the support rollers and the track frame, the cooperation of multiple support rollers can lift the track, change the track tension, and facilitate the absorption of energy and reduction of impact during track deformation.

Description

Technical Field

[0001] This utility model relates to the field of roller technology, and in particular to a highly stable roller. Background Technology

[0002] As an indispensable key support component of tracked equipment, the idler roller plays a crucial role in supporting the track tracks and guiding their direction of movement in fields such as construction machinery, agricultural machinery, and mining equipment. The stability of its working condition directly determines the equipment's smoothness of travel, operational safety, and overall service life. The fit precision between the idler roller and the track tracks affects the track transmission efficiency, its load-bearing capacity determines the equipment's reliability under heavy load conditions, and its smoothness of operation is directly related to key indicators such as machine vibration and component fatigue.

[0003] However, existing tracked rollers still have significant technical defects in practical applications, especially in terms of shock absorption performance, which has become a major bottleneck restricting equipment stability. Traditional rollers generally adopt a rigid connection structure, lacking an effective buffer and energy absorption design between the wheel and the axle. When the equipment travels on rough roads, bumpy terrain, or performs heavy-duty operations, the impact load transmitted by the track chain (the instantaneous load can reach 2-3 times the rated value) will directly act on the roller body and axle system. This high-frequency impact not only causes the roller itself to suffer severe vibration, but also causes stress concentration in the contact area between the wheel and the track, accelerating rim wear, wheel deformation, and other failure problems. At the same time, the impact load is transmitted to the equipment frame through the axle system, which can easily cause a chain of failures such as bearing jamming, journal wear, and even breakage, significantly shortening the service life of the roller and related components. Utility Model Content

[0004] This utility model discloses a highly stable support roller, which mainly solves the problem that the support roller is rigidly connected to the track base and is easily damaged under high-frequency impact.

[0005] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows:

[0006] This utility model provides a highly stable support roller. Two support roller bodies are installed at both ends of the same central shaft, which passes through the top of the diagonal support frame. The diagonal support frame is configured as a V-shaped structure with an adjustable opening, and a gathering mechanism is provided at the opening of the diagonal support frame to close the opening of the diagonal support frame. A fixing frame is provided below the support roller body, and the diagonal support frame is located inside the fixing frame, with the bottom of the diagonal support frame in rolling contact with the bottom of the fixing frame. The fixing frame is fixedly mounted on the base.

[0007] Preferably, the fixing frame includes a rectangular tube and a plate welded to the bottom of the tube. U-shaped grooves are provided on the top of the two opposite side walls of the tube, and notches are provided on the bottom of the other two opposite side walls of the tube.

[0008] Preferably, the two roller bodies are distributed on both sides of the tube body, with two U-shaped grooves arranged horizontally on the central axis, and two notches are respectively provided through the two sides of the bottom of the diagonal support frame.

[0009] Preferably, the diagonal bracing frame includes a jacking pipe and two diagonal bracing plates hinged to the same side of the jacking pipe. Rollers are hinged to the bottom of both diagonal bracing plates. The rollers at the bottom of the two diagonal bracing plates can be moved relative to each other to adjust the height of the jacking pipe.

[0010] Preferably, the central shaft is installed through the jacking pipe, and the U-shaped groove restricts the direction of the jacking pipe's lifting and lowering. At the same time, the U-shaped groove and the track control the lifting and lowering distance of the support roller body; the inclined support plate is installed through the notch, and the roller makes rolling contact with the plate body.

[0011] Preferably, the gathering mechanism includes two sets of connecting members and elastic members arranged in parallel between the two sets of connecting members. The elastic members are provided with at least two of different lengths and are located between two diagonal bracing plates. At the same time, the two sets of connecting members are respectively installed on the two diagonal bracing plates.

[0012] Preferably, the connector includes a first clamping plate and a second clamping plate, the first clamping plate is configured with a convex structure, and the second clamping plate is connected to the convexity of the first clamping plate by bolts.

[0013] Preferably, a perforation is provided at the bottom of the diagonal brace along its length, the protrusion of the first clamping plate is inserted into the perforation, and the first clamping plate and the second clamping plate are used to clamp the diagonal brace.

[0014] The advantages or beneficial effects of the above technical solutions include at least the following:

[0015] 1. The support rollers of this utility model are flexibly connected to the track frame, allowing for a certain relative displacement between the support rollers and the track frame, which can absorb vibration and buffer impact. In addition, with the support rollers and track frame flexibly connected, the cooperation of multiple support rollers can lift the track, change the track tension, and facilitate the absorption of energy and reduction of impact during track deformation.

[0016] 2. The roller body of this utility model is set on the top of the inclined support frame, and a gathering mechanism is installed at the bottom of the inclined support frame. When the track applies a downward force to the roller body, forcing the two sides of the inclined support frame to move away from each other, the gathering mechanism controls the two sides of the inclined support frame to move closer to each other, thereby absorbing and buffering the impact force while stably supporting the track.

[0017] 3. This utility model sets the roller body to contact the track, and the track length is fixed. In addition, the central shaft of the roller body is set through a U-shaped groove, which can limit the lifting distance of the roller body with the cooperation of the track and the U-shaped groove. With the roller body stably supporting the track and absorbing the impact force, the roller body can be stably installed. Attached Figure Description

[0018] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the support roller and fixing frame of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the fixing frame of this utility model;

[0022] Figure 4 This is a structural schematic diagram of the support roller, diagonal brace, and gathering mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the diagonal brace of this utility model;

[0024] Figure 6 This is a schematic diagram of the gathering mechanism of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base;

[0027] 2. The supporting wheel body;

[0028] 3. Fixture;

[0029] 31. Notch; 32. U-shaped groove;

[0030] 4. Diagonal bracing;

[0031] 41. Diagonal brace; 42. Roller; 43. Perforation; 44. Jacking pipe; 45. Central shaft;

[0032] 5. Aggregation mechanism;

[0033] 51. Elastic element; 52. First clamping plate; 53. Second clamping plate. Detailed Implementation

[0034] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0035] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0037] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0038] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0039] Example 1

[0040] The base 1 of tracked equipment typically includes a track frame and a base frame connecting the left and right track frames. The base frame bears the weight of the upper part of the equipment (such as the turntable of an excavator or the working device of a bulldozer). Track rollers, carrier rollers, idler rollers and other wheel bodies are installed on the track frame, and tracks are installed on the track rollers, carrier rollers, idler rollers and other wheel bodies, which can reduce track wear while guiding the running direction of the tracks and supporting the weight of the equipment.

[0041] Roller rollers generally adopt a rigid connection structure, lacking an effective buffer and energy absorption design between the wheel body and the axle. When the equipment travels on rough roads, bumpy sites, or performs heavy-load operations, the impact load transmitted by the track chain will directly act on the roller body and axle system, causing various problems.

[0042] To change the rigid connection between the track roller and the track frame, this embodiment provides a new technical solution. See also... Figure 1 In this technical solution, the support rollers are flexibly connected to the track frame, allowing for a certain relative displacement between them, which can absorb vibration and buffer impact. Furthermore, with the support rollers and track frame flexibly connected, the cooperation of multiple support rollers can lift the track, change the track tension, and facilitate energy absorption and impact mitigation during track deformation.

[0043] like Figure 4 As shown, specifically, the track roller includes two track roller bodies 2 connected by bearings and mounted on the same central shaft 45. The two track roller bodies 2 contact the inner wall of the track, supporting the upper track (non-ground side), preventing the track from sagging or swaying due to its own weight, and reducing friction between the track and the frame. The dual-wheel design limits lateral track deviation.

[0044] like Figure 2 , Figure 4 As shown, to stably mount the roller body 2 on the track frame and achieve a flexible connection between the roller body 2 and the track frame, a central shaft 45 is installed through the top of the diagonal support frame 4. The diagonal support frame 4 is a V-shaped structure with an adjustable bottom opening, and a convergence mechanism 5 is provided at the opening of the diagonal support frame 4. A fixing frame 3 is provided below the roller body 2, and the diagonal support frame 4 is located inside the fixing frame 3, with the bottom of the diagonal support frame 4 in rolling contact with the bottom of the fixing frame 3. At the same time, the central shaft 45 is slidably mounted relative to the fixing frame 3. In addition, the fixing frame 3 is fixedly mounted on the track frame. When the fixing frame 3 is mounted on the track frame and the roller body 2 supports the upper track, when the upper track is impacted, it applies downward pressure to the roller body 2 and the diagonal support frame 4, forcing the bottom of the two sides of the diagonal support frame 4 to roll on the fixing frame 3 to adjust the opening angle, while the roller body 2 descends. When the opening angle of the diagonal brace 4 increases, the convergence mechanism 5 extends again and applies a force that moves closer together to the two sides of the diagonal brace 4 to counteract the force exerted by the track on the roller body 2, thus achieving buffering. When the track travels smoothly, the convergence mechanism 5 and the track apply opposing forces to the diagonal brace 4, controlling the roller body 2 to rise and fall slowly to achieve energy absorption. Similarly, the convergence mechanism 5 and the track work together to restrict the stable installation of the roller body 2. Only after the fixing frame 3 is removed from the track frame will the roller body 2 detach from the fixing frame 3 under the action of the convergence mechanism 5.

[0045] Example 2

[0046] like Figure 3 As shown, based on Embodiment 1, in order to stably install the fixing frame 3 on the track frame, the fixing frame 3 includes a rectangular tube and a plate welded to the bottom of the tube. The plate is connected to the track frame by bolts or welding, thereby stably supporting the tube and setting it vertically to the track frame.

[0047] like Figure 2 , Figure 3 , Figure 4As shown, to limit the lifting direction of the roller body 2, U-shaped grooves 32 are provided on the top of the two opposite side walls of the tube body. The two roller bodies 2 are distributed on both sides of the tube body, and the central shaft 45 is set across the two U-shaped grooves 32. Since the orientation of the U-shaped grooves 32 is fixed, the movement direction of the central shaft 45 can be limited, thereby controlling the lifting of the roller body 2 in a preset direction. In addition, the height of the U-shaped grooves 32 is fixed. When the central shaft 45 passes through the U-shaped grooves 32 and the roller body 2 and contacts the track, and the track length is fixed, the cooperation between the track and the U-shaped grooves 32 limits the lifting distance of the roller body 2. With the roller body 2 stably supporting the track and absorbing the impact force, the stable installation of the roller body 2 is achieved.

[0048] like Figure 2 , Figure 3 , Figure 4 As shown, in order to facilitate the adjustment of the opening angle of the diagonal brace 4, notches 31 are provided at the bottom of the other two pairs of side walls of the tube, and the two sides of the bottom of the diagonal brace 4 are respectively provided through the two notches 31. This configuration provides sufficient space for the two sides of the diagonal brace 4 to be close to or far apart from each other, and the tube of the bracket 3 cannot be fixed to a larger size.

[0049] Example 3

[0050] like Figure 5 As shown, based on Embodiment 1 or 2, to achieve adjustable state of the diagonal support frame 4, the diagonal support frame 4 includes a jacking pipe 44 and two diagonal support plates 41 hinged to the same side of the jacking pipe 44. Rollers 42 are hinged to the bottom of each of the two diagonal support plates 41. When assembling the diagonal support frame 4 and the fixing frame 3, a through-hole 31 is provided at the bottom of the two diagonal support plates 41, and the rollers 42 roll in contact with the base plate. The two diagonal support plates 41 move relative to each other under external force to adjust the height of the jacking pipe 44. Additionally, a central shaft is provided through the jacking pipe 44, controlling the lifting and lowering of the central shaft 45 and the support roller body 2 when the state of the diagonal support frame 4 is adjusted.

[0051] Example 4

[0052] like Figure 6As shown, based on Embodiment 3, in order to enable the converging mechanism 5 to apply a force that brings the two diagonal braces 41 closer together when the track applies a force that moves them away from each other, the converging mechanism 5 includes two sets of connecting members and an elastic member 51 arranged parallel between the two sets of connecting members. The elastic member 51 has at least two members of different lengths and is located between the two diagonal braces 41. The two sets of connecting members are respectively installed on the two diagonal braces 41. The upper elastic member 51 is in an extended state; therefore, when the two diagonal braces 41 are moving away from each other, the elastic member 51 applies a force that brings them closer together, and can control the roller body 2 to stably support the track. Alternatively, the elastic element 51 can be selected from elastic bands, high-strength helical tension springs, fiber-reinforced composite elastic elements (using high-performance fibers (carbon fiber, aramid fiber) as reinforcement, combined with a resin matrix), steel wire rope elastic elements (composed of multiple strands of high-strength steel wire rope and an elastic matrix, utilizing the high tensile strength of the steel wire rope and the elastic buffer of the matrix), metal strip tension springs (made of high-strength steel strips, providing tensile force through the bending elasticity of the steel strips), etc., all of which can maintain an elongated state under high loads and for extended periods. Regardless of the type of elastic element 51 selected, it must be equipped with corresponding connectors to install the connectors at the ends of the elastic element 51, thereby ensuring a stable connection with the diagonal brace plate 41.

[0053] like Figure 6 As shown, when the elastic band is selected, the connecting member includes a first clamping plate 52 and a second clamping plate 53. The first clamping plate 52 is configured with a convex structure, and the second clamping plate 53 is bolted to the protrusion of the first clamping plate 52. The end of the elastic band is hinged to the side of the first clamping plate 52 away from the second clamping plate 53. A through hole 43 is provided at the bottom of the diagonal brace plate 41 along its length direction. The protrusion of the first clamping plate 52 is inserted into the through hole 43, and the first clamping plate 52 and the second clamping plate 53 clamp the diagonal brace plate 41.

[0054] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0055] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A high-stability idler wheel, characterized by, The device includes two roller bodies, which are mounted at both ends of the same central shaft. The central shaft passes through the top of the diagonal support frame. The diagonal support frame is configured as a V-shaped structure with an adjustable opening, and a converging mechanism is provided at the opening of the diagonal support frame to close the opening. A fixing frame is provided below the roller bodies, and the diagonal support frame is located inside the fixing frame, with the bottom of the diagonal support frame in rolling contact with the bottom of the fixing frame. The fixing frame is fixedly mounted on the base.

2. The high-stability support roller as described in claim 1, characterized in that, The fixing frame includes a rectangular tube and a plate welded to the bottom of the tube. The top of the two opposite side walls of the tube are provided with U-shaped grooves, and the bottom of the other two opposite side walls of the tube are provided with notches.

3. The high-stability support roller as described in claim 2, characterized in that, The two roller bodies are distributed on both sides of the tube body, the central shaft is provided with two U-shaped grooves, and the two sides of the bottom of the diagonal support frame are respectively provided with two notches.

4. The high-stability support roller as described in claim 2, characterized in that, The inclined support frame includes a jacking pipe and two inclined support plates hinged to the same side of the jacking pipe. Rollers are hinged to the bottom of both inclined support plates. The rollers at the bottom of the two inclined support plates can be moved relative to each other to adjust the height of the jacking pipe.

5. The high-stability support roller as described in claim 4, characterized in that, The central shaft is installed through the jacking pipe, and the U-shaped groove restricts the direction of jacking pipe lifting and lowering. At the same time, the U-shaped groove and the track control the lifting distance of the support roller body; the inclined support plate is installed through the notch, and the roller makes rolling contact with the plate body.

6. The high-stability support roller as described in claim 4, characterized in that, The gathering mechanism includes two sets of connecting parts and elastic members arranged in parallel between the two sets of connecting parts. The elastic members are provided with at least two of different lengths and are located between two diagonal bracing plates. At the same time, the two sets of connecting parts are respectively installed on the two diagonal bracing plates.

7. The high-stability support roller as described in claim 6, characterized in that, The connector includes a first clamping plate and a second clamping plate. The first clamping plate is configured with a convex structure, and the second clamping plate is bolted to the convex part of the first clamping plate.

8. The high-stability support roller as described in claim 7, characterized in that, A through hole is provided at the bottom of the diagonal brace along its length direction. The protrusion of the first clamping plate is inserted into the through hole, and the first clamping plate and the second clamping plate clamp the diagonal brace.

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