Auxiliary wheel arrangement for a rail inspection apparatus
Patent Information
- Application Number
- CN202522392088.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-11
AI Technical Summary
[0003]在常规直线路段，轨检设备通过其主轮系可以稳定支撑和行走，然而当设备运行至道岔区段时，尤其是有害空间的区域，会面临严峻挑战，护轨与基本轨相对位置距离的不正确设置，容易导致轨检设备的轮系陷入、卡滞或发生剧烈碰撞，这种碰撞不仅会损坏精密的检测设备，影响检测数据的准确性，甚至可能造成设备脱轨，引发安全事故
[0007]与现有技术相比，本实用新型的有益效果是：通过将辅助轮组件采用多级铰接设计，使得末端的转轮结构在接触护轨时，并非刚性碰撞，而是可以通过转动结构的偏转来适应护轨的走向和与基本轨的距离变化，将可能的横向冲击转化为平滑的导向力，极大减少了卡滞和撞击风险，同时通过转轮结构直接抵靠护轨，将设备与护轨的滑动摩擦转变为滚动摩擦，显著降低了通过阻力，保护了护轨和设备自身，确保了检测过程的平稳性和数据准确性。
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Figure CN224915918U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of track inspection technology, and in particular to an auxiliary wheel device for track inspection equipment. Background Technology
[0002] In sections where turnouts are installed, turnout guard rails are laid inside the stock rails. These guard rails are fixed inside the stock rails and are used to prevent derailment of locomotive wheels or guide the direction of the wheels by pressing against the inner side of the locomotive wheel flanges, thus limiting the train's sway and enabling it to pass through the turnout smoothly.
[0003] On regular straight sections, track inspection equipment can be stably supported and moved by its main wheel system. However, when the equipment runs to the turnout section, especially in the hazardous space area, it will face severe challenges. Incorrect setting of the relative position distance between the guard rail and the stock rail can easily cause the wheel system of the track inspection equipment to get stuck, jammed, or violently collide. Such collisions can not only damage the precision inspection equipment and affect the accuracy of the inspection data, but may even cause the equipment to derail and cause safety accidents.
[0004] In the existing technology, there is a lack of a device that can effectively guide and protect the turnout guard rail area. Some devices may use simple fixed baffles or rollers, but they cannot adapt to the slight changes in the distance between the guard rail and the main rail of different turnout models, as well as the dynamic offset generated when the device passes the turnout. This rigid or non-adjustable contact method still poses a risk of collision or introduces unnecessary frictional resistance, affecting the stability of the inspection vehicle. Utility Model Content
[0005] Therefore, the purpose of this utility model is to provide an auxiliary wheel device for track inspection equipment, which can effectively solve the shortcomings of the prior art.
[0006] An auxiliary wheel device for track inspection equipment includes: A main beam structure that is slidably mounted on a rail, an auxiliary beam structure that is slidably mounted on a rail, and an intermediate rotating assembly connecting the main beam structure and the auxiliary beam structure. Auxiliary wheel assemblies are provided at both ends of the main beam structure and the auxiliary beam structure facing the intermediate slewing assembly. The auxiliary wheel assembly includes a fixed structure threadedly connected to both ends of the main beam structure and the auxiliary beam structure facing the intermediate slewing assembly, a rotating structure hinged to the fixed structure at the end facing the intermediate slewing assembly, an extension rod structure disposed at the end of the rotating structure away from the fixed structure, and a rotating wheel structure rotatably disposed at the end of the extension rod structure away from the rotating structure for abutting against the guard rail.
[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: by adopting a multi-stage hinge design for the auxiliary wheel assembly, the end-end rotating wheel structure does not make a rigid collision when it contacts the guard rail. Instead, it can adapt to the direction of the guard rail and the change in distance from the main rail through the deflection of the rotating structure, transforming possible lateral impacts into smooth guiding forces. This greatly reduces the risk of jamming and impact. At the same time, by having the rotating wheel structure directly abut against the guard rail, the sliding friction between the equipment and the guard rail is transformed into rolling friction, significantly reducing the resistance to passage, protecting the guard rail and the equipment itself, and ensuring the stability of the testing process and the accuracy of the data.
[0008] Furthermore, the radius of the rotating wheel structure is A. When the rotating structure rotates toward the fixed structure to its minimum stroke, the distance from the central axis of the rotating wheel structure to the outer side of the adjacent rail is 39mm-A. When the rotating structure rotates away from the fixed structure to its maximum stroke, the distance from the central axis of the rotating wheel structure to the outer side of the adjacent rail is 42mm-A.
[0009] Furthermore, first hinge members are provided on the upper and lower sides of the fixed structure facing the intermediate rotating component, and a second hinge member is provided at the end of the rotating structure facing the fixed structure, which is inserted between the two first hinge members. Both first hinge members and the second hinge member are penetrated by a pin.
[0010] Furthermore, the second hinge member abuts against the fixed structure when the rotating structure is at its maximum or minimum stroke.
[0011] Furthermore, an abutment is provided on the side of the rotating structure away from the intermediate rotating assembly, and a groove is provided on the side of the fixing structure facing the abutment, with an abutment assembly for abutting against the abutment being provided in the groove.
[0012] Furthermore, the abutment assembly includes a shaft connected to the center of the bottom of the groove, an elastic structure sleeved on the shaft, and an abutment member that is smoothly connected to the inner wall of the groove and sleeved on the elastic structure. The abutment member is slidably disposed in the groove through the elastic structure.
[0013] Furthermore, when the elastic structure is extended to its maximum stroke, the rotating structure is also at its maximum stroke; when the elastic structure is contracted to its minimum stroke, the rotating structure is also at its minimum stroke.
[0014] Furthermore, a handle structure is provided on the side of the main beam structure and the auxiliary beam structure facing the intermediate slewing assembly, and the handle structure is located above the auxiliary wheel assembly. Attached Figure Description
[0015] Figure 1This is a schematic diagram of the overall structure of the auxiliary wheel device of the track inspection equipment in this embodiment of the utility model; Figure 2 This is a first-view schematic diagram of the auxiliary wheel assembly in an embodiment of this utility model; Figure 3 This is a second-view schematic diagram of the auxiliary wheel assembly in an embodiment of this utility model; Figure 4 This is a cross-sectional schematic diagram of the abutting component in an embodiment of this utility model; Explanation of key component symbols:
[0016] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation
[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.
[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0020] Please see Figures 1 to 4 The auxiliary wheel device of the track inspection equipment in this embodiment of the present invention includes: The main beam structure 10 is slidably mounted on the rail, the auxiliary beam structure 20 is slidably mounted on the rail, and the intermediate rotating assembly 30 is connected between the main beam structure 10 and the auxiliary beam structure 20. Auxiliary wheel assemblies 40 are provided at both ends of the main beam structure 10 and the auxiliary beam structure 20 facing the intermediate rotating assembly 30. The auxiliary wheel assembly 40 includes a fixed structure 41 threadedly connected to both ends of the main beam structure 10 and the auxiliary beam structure 20 facing the intermediate rotating assembly 30, a rotating structure 42 hinged to one end of the fixed structure 41 facing the intermediate rotating assembly 30, an extension rod structure 43 provided at one end of the rotating structure 42 away from the fixed structure 41, and a rotating wheel structure 44 rotatably provided at one end of the extension rod structure 43 away from the rotating structure 42 for abutting against the guard rail.
[0021] Understandably, the auxiliary wheel assembly 40 adopts a multi-stage hinge design, so that when the end wheel structure 44 contacts the guard rail, it is not a rigid collision, but can adapt to the direction of the guard rail and the change in distance from the main rail through the deflection of the rotating structure 42, transforming possible lateral impacts into smooth guiding forces, greatly reducing the risk of jamming and impact. At the same time, by having the wheel structure 44 directly abut against the guard rail, the sliding friction between the equipment and the guard rail is transformed into rolling friction, significantly reducing the resistance to passage, protecting the guard rail and the equipment itself, and ensuring the smoothness of the detection process and the accuracy of the data.
[0022] Furthermore, the radius of the wheel structure 44 is A. When the rotating structure 42 rotates toward the fixed structure 41 to its minimum stroke, the distance from the central axis of the wheel structure 44 to the outer side of the adjacent rail is 39mm-A. When the rotating structure 42 rotates away from the fixed structure 41 to its maximum stroke, the distance from the central axis of the wheel structure 44 to the outer side of the adjacent rail is 42mm-A.
[0023] It should be noted that in the straight section of the turnout guard rail, the distance between the guard rail and the inner side of the stock rail is usually designed to be 39mm-42mm. This distance range is designed for the typical distance between the guard rail and the stock rail of the Chinese railway standard turnout. This is the minimum safe clearance to ensure the smooth passage of the locomotive wheel flange.
[0024] Understandably, by limiting the stroke of the rotating structure 42, the range of motion of the wheel structure 44 is ensured to cover all possible working positions of the guard rail. At the same time, it ensures that the wheel structure always maintains appropriate pressure against the working surface of the guard rail, so that it will not lose its guiding function due to excessive distance, nor will it excessively squeeze the guard rail or interfere with the main rail due to insufficient distance, thus achieving the optimal guiding effect.
[0025] Furthermore, first hinge members 45 are provided on the upper and lower sides of the fixed structure 41 facing the intermediate rotating assembly 30, and a second hinge member 46 is provided at the end of the rotating structure 42 facing the fixed structure 41, which is inserted between the two first hinge members 45. Both the two first hinge members 45 and the second hinge member 46 are penetrated by a pin 47.
[0026] Furthermore, the second hinge 46 abuts against the fixed structure 41 when the rotating structure 42 is at its maximum or minimum stroke.
[0027] Understandably, by using the pin 47 to pass through the first hinge 45 and the second hinge 46, a robust and low-wear rotating pair is formed, ensuring the stability and long service life of the rotating structure 42 under frequent stress. By setting the second hinge 46 against the fixed structure 41 when the rotating structure 42 is at its maximum or minimum stroke, the fixed structure 41 plays a hard limiting role, effectively preventing the rotating structure 42 from being damaged by excessive external force or accidental situations, thereby improving the reliability and durability of the device.
[0028] Furthermore, an abutment portion 48 is provided on the side of the rotating structure 42 away from the intermediate rotating assembly 30, and a groove 49 is provided on the side of the fixing structure 41 facing the abutment portion 48, and an abutment assembly 50 for abutting against the abutment portion 48 is provided in the groove 49.
[0029] Furthermore, the abutment component 50 includes a shaft 51 connected to the center of the bottom of the groove 49, an elastic structure 52 sleeved on the shaft 51, and an abutment member 53 that is smoothly connected to the inner wall of the groove 49 and sleeved on the elastic structure 52. The abutment member 53 is slidably disposed in the groove 49 through the elastic structure 52.
[0030] Furthermore, when the elastic structure 52 is extended to its maximum stroke, the rotating structure 42 is also at its maximum stroke; when the elastic structure 52 is contracted to its minimum stroke, the rotating structure 42 is also at its minimum stroke.
[0031] Understandably, by setting the elastic structure 52, the rotating wheel structure 44 has a buffering function when it abuts against the guard rail, which can absorb the instantaneous impact and vibration generated when the equipment passes through the turnout. At the same time, the elastic force provides the rotating structure 42 with a force tending towards the middle or initial position. When the guiding force of the guard rail disappears or changes, it can help the rotating wheel structure 44 to quickly and smoothly reset, maintain the ready state of the device, and improve the smoothness of passage. Moreover, when the elastic structure 52 is opened to its maximum stroke, the rotating structure 42 is also at its maximum stroke, and when the elastic structure 52 is contracted to its minimum stroke, the rotating structure 42 is also at its minimum stroke. This ensures that the limit of elastic buffering is synchronized with the limit of mechanical rotation, so that the rotating wheel structure 44 will not swing easily. It will only move when it encounters the guard rail and generates a large swaying force when passing through the turnout. During the process, it maintains a self-resetting tendency with a large spring force to exert the maximum limiting effect. At the same time, the buffering force and the rotation angle are optimally matched, providing just the right damping and reset force throughout the swinging process, thus optimizing the dynamic response performance of the device.
[0032] Furthermore, a handle structure 60 is provided on the side of the main beam structure 10 and the auxiliary beam structure 20 facing the intermediate slewing assembly 30, and the handle structure 60 is located above the auxiliary wheel assembly 40.
[0033] Understandably, by setting up the handle structure, a clear point of force is provided for the operator, which greatly facilitates the installation, disassembly, turning or short-distance handling of the equipment, reduces labor intensity and improves work efficiency.
[0034] In summary, the auxiliary wheel device of the track inspection equipment in the above embodiments of this utility model, by adopting a multi-stage hinge design for the auxiliary wheel assembly, ensures that the end-end rotating wheel structure does not experience a rigid collision when it contacts the guard rail. Instead, it can adapt to the direction of the guard rail and changes in the distance from the main rail through the deflection of the rotating structure, transforming potential lateral impacts into smooth guiding forces. This greatly reduces the risk of jamming and impact. At the same time, by having the rotating wheel structure directly abut against the guard rail, the sliding friction between the equipment and the guard rail is transformed into rolling friction, significantly reducing the resistance to passage, protecting the guard rail and the equipment itself, and ensuring the stability of the inspection process and the accuracy of the data.
[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An auxiliary wheel device for a track inspection equipment, characterized in that, include: A main beam structure that is slidably mounted on a rail, an auxiliary beam structure that is slidably mounted on a rail, and an intermediate rotating assembly connecting the main beam structure and the auxiliary beam structure. Auxiliary wheel assemblies are provided at both ends of the main beam structure and the auxiliary beam structure facing the intermediate slewing assembly. The auxiliary wheel assembly includes a fixed structure threadedly connected to both ends of the main beam structure and the auxiliary beam structure facing the intermediate slewing assembly, a rotating structure hinged to the fixed structure at the end facing the intermediate slewing assembly, an extension rod structure disposed at the end of the rotating structure away from the fixed structure, and a rotating wheel structure rotatably disposed at the end of the extension rod structure away from the rotating structure for abutting against the guard rail.
2. The auxiliary wheel device of the track inspection equipment according to claim 1, characterized in that, The radius of the rotating wheel structure is A. When the rotating structure rotates toward the fixed structure to its minimum stroke, the distance from the central axis of the rotating wheel structure to the outer side of the nearest rail is 39mm-A. When the rotating structure rotates away from the fixed structure to its maximum stroke, the distance from the central axis of the rotating wheel structure to the outer side of the nearest rail is 42mm-A.
3. The auxiliary wheel device of the track inspection equipment according to claim 1, characterized in that, First hinge members are provided on the upper and lower sides of the fixed structure facing the middle rotating component, and a second hinge member is provided on the rotating structure facing the fixed structure, which is inserted between the two first hinge members. Both first hinge members and the second hinge member are penetrated by a pin.
4. The auxiliary wheel device of the track inspection equipment according to claim 3, characterized in that, The second hinge member abuts against the fixed structure when the rotating structure is at its maximum or minimum stroke.
5. The auxiliary wheel device of the track inspection equipment according to claim 1, characterized in that, An abutment is provided on the side of the rotating structure away from the intermediate rotating assembly, and a groove is provided on the side of the fixing structure facing the abutment, and an abutment assembly for abutting against the abutment is provided in the groove.
6. The auxiliary wheel device of the track inspection equipment according to claim 5, characterized in that, The abutting component includes a shaft connected to the center of the bottom of the groove, an elastic structure sleeved on the shaft, and an abutting member that is smoothly connected to the inner wall of the groove and sleeved on the elastic structure. The abutting member is slidably disposed in the groove through the elastic structure.
7. The auxiliary wheel device of the track inspection equipment according to claim 6, characterized in that, When the elastic structure is extended to its maximum stroke, the rotating structure is also at its maximum stroke; when the elastic structure is contracted to its minimum stroke, the rotating structure is also at its minimum stroke.
8. The auxiliary wheel device of the track inspection equipment according to claim 1, characterized in that, A handle structure is also provided on the side of the main beam structure and the auxiliary beam structure facing the intermediate slewing assembly, and the handle structure is located above the auxiliary wheel assembly.