阅读说明：本技术 分体式研磨子、轨道车辆的车轮踏面清扫装置和轨道车辆 (Split type grinder, wheel tread cleaning device of railway vehicle and railway vehicle ) 是由 伍安旭 徐昊 汪冬冬 吴波 冯畅 于 2019-10-10 设计创作，主要内容包括：本发明涉及分体式研磨子、用于轨道车辆的车轮踏面清扫装置和轨道车辆。所述分体式研磨子包括：连接件,其被可拆卸地安装到轨道车辆的闸瓦托上；至少两个研磨子组件,其中每一个研磨子组件具有摩擦体和支撑体,所述摩擦体被布置成提供用于与轨道车辆的车轮踏面摩擦接触的表面,并通过所述支撑体与所述连接件相连,并且在其中至少两个研磨子组件之间设置有间隙。本发明易于制造、安装和维护,其能够有效降低研磨子摩擦面在使用过程中的温度,减少由于发生研磨子金属镶嵌而导致划伤车轮的概率,并且减少摩擦振动、冲击和噪声的影响,使得系统整体更加稳定可靠。(The invention relates to a split type grinder, a wheel tread cleaning device for a railway vehicle and the railway vehicle. The split type grinder comprises: a connector which is detachably mounted to a brake head of a rail vehicle; at least two grinding subassemblies, wherein each grinding subassembly has a friction body and a support body, the friction body is arranged to provide a surface for frictional contact with a tread of a wheel of a rail vehicle and is connected to the connection piece by the support body, and wherein a gap is provided between at least two of the grinding subassemblies. The invention is easy to manufacture, install and maintain, can effectively reduce the temperature of the friction surface of the grinding wheel in the using process, reduces the probability of scratching the wheel caused by the metal embedding of the grinding wheel, and reduces the influence of friction vibration, impact and noise, so that the whole system is more stable and reliable.)

1. A split grinder, comprising:

a connector which is detachably mounted to a brake head of a rail vehicle; and

at least two grinding subassemblies, wherein each grinding subassembly has a friction body and a support body, the friction body is arranged to provide a surface for frictional contact with a tread of a wheel of a rail vehicle and is connected to the connection piece by the support body, and wherein a gap is provided between at least two of the grinding subassemblies.

2. The split grinding machine of claim 1, wherein an elastic member is provided between the supporting body and the connecting member of at least one of the grinding sub-assemblies.

3. The split grinding mill of claim 2 wherein the resilient member comprises a disc spring and the connector is provided with a bore for receiving the resilient member.

4. The split grinding body of claim 1, wherein the split grinding body comprises three grinding subassemblies arranged such that the gap between two adjacent grinding subassemblies is equal in width and the overall surface formed by the surfaces of the friction bodies in each grinding subassembly is rounded.

5. The split grinder of claim 1, wherein the supporter is configured to have a cylindrical boss passing through a mounting hole provided on the connection member and being snapped on the connection member by a spacer.

6. The split grinding mill of claim 1 wherein the connector is mounted to the brake head by a male-female configuration.

7. The split grinder of claim 1, wherein the friction body is integrally formed with the supporting body by hot press molding and sintering for curing.

8. The split grinding body of any one of claims 1 to 7, wherein the friction body is a modified friction body and/or a tackified friction body, and/or the friction bodies in each grinding sub-assembly are made of the same or different materials, respectively, and/or the support bodies in each grinding sub-assembly are made of the same or different materials, respectively, and/or the widths of the gaps in the grinding sub-assemblies are equal or unequal to each other.

9. A wheel tread surface sweeping device for a railway vehicle comprising a split grinding mill according to any one of claims 1 to 8.

10. A rail vehicle provided with one or more split grinders as claimed in any one of claims 1 to 8 or one or more wheel tread sweeping devices as claimed in claim 9.

Technical Field

The invention relates to the technical field of heat exchange, in particular to a split type grinder, a wheel tread cleaning device for a railway vehicle and the railway vehicle.

Background

From the use of tread surface cleaning devices for high-speed trains, it has been verified that a grinding wheel in the tread surface cleaning device has functions of tread surface cleaning, wheel rail thickening, wheel shaping and the like, and can effectively improve the braking performance and the comfort performance of the train, which is actually used.

However, the existing grinders still have some disadvantages in terms of, for example, structural configuration, use effect, safety performance, manufacturing and maintenance costs, and can be further improved and optimized. For example, the existing grinder arranged on a high-speed train directly contacts with a wheel tread in the use process, because the rotation speed of the wheel is high and the friction area between the grinder and the wheel is large, a large amount of heat and abrasive dust are generated in the friction process, the temperature of the friction surface of the grinder is high, the surface hardness is reduced, the grinder is directly and tightly attached to the wheel tread, and the abrasive dust is adhered to the surface of the wheel and is not easy to discharge. As metal debris accumulates more, this long-term accumulation tends to cause the formation of metal inlays, which, in the more severe cases, may scratch the wheel tread, creating operational risks.

Disclosure of Invention

In view of the above, the present invention provides a split grinding mill, a wheel tread sweeping device for a rail vehicle and a rail vehicle, which may solve or at least alleviate one or more of the above problems and other problems in the prior art.

First, according to a first aspect of the present invention, there is provided a split grinder comprising:

a connector which is detachably mounted to a brake head of a rail vehicle; and

at least two grinding subassemblies, wherein each grinding subassembly has a friction body and a support body, the friction body is arranged to provide a surface for frictional contact with a tread of a wheel of a rail vehicle and is connected to the connection piece by the support body, and wherein a gap is provided between at least two of the grinding subassemblies.

In the split grinder according to the present invention, optionally, an elastic member is disposed between the supporting body and the connecting member of at least one of the grinding sub-assemblies.

In the split grinder according to the present invention, optionally, the elastic member includes a disc spring, and the connecting member is provided with a hole groove for receiving the elastic member.

In the split grinding sub according to the present invention, optionally, the split grinding sub comprises three grinding sub assemblies arranged such that the width of the gap between two adjacent grinding sub assemblies is equal, and the overall surface formed by the surfaces of the friction bodies in each grinding sub assembly is in the shape of a circular arc.

In the split grinder according to the present invention, optionally, the support body is configured to have a cylindrical boss which passes through a mounting hole provided on the connection member and is snap-fitted to the connection member by a spacer.

In the split grinding mill according to the invention, optionally, the connecting piece is mounted to the brake head by a male-female structure.

In the split-type grinder according to the present invention, optionally, the friction body is integrally hot-pressed with the support body and sintered and cured.

In the split-type grinder according to the present invention, optionally, the friction body is a modified friction body and/or a tackified friction body, and/or the friction bodies in the respective grinding subassemblies are made of the same or different materials, respectively, and/or the supporting bodies in the respective grinding subassemblies are made of the same or different materials, respectively, and/or the widths of the respective gaps in the grinding subassemblies are equal to or different from each other.

Secondly, according to a second aspect of the invention, there is also provided a wheel tread sweeping device for a rail vehicle, the wheel tread sweeping device comprising a split grinding mill according to any one of the above.

According to a third aspect of the present invention, there is also provided a rail vehicle having one or more split grinding bodies as described in any one of the above, or one or more wheel tread sweeping devices as described above.

The principles, features, characteristics, advantages and the like of various aspects according to the present invention will be clearly understood from the following detailed description taken in conjunction with the accompanying drawings. For example, compared with the prior art, the technical scheme of the invention is not only easy to manufacture, install and maintain, but also can be used for removing chips, dissipating heat and the like by arranging the gap between the friction bodies of the split type grinder, thereby effectively reducing the temperature of the friction surface of the grinder in the using process, reducing the probability of scratching the wheel due to the metal embedding of the grinder, and being very helpful for improving the working efficiency, safety and reliability of the whole system. In addition, the friction body can be used independently or simultaneously in a matched mode for the shape modification friction body and the tackifying friction body, so that the split type grinder is more excellent in comprehensive performance and more flexible to use. In addition, the split grinding mill is provided with the structure structures such as the gasket, the belleville spring and the dovetail groove, so that the influence of friction vibration, impact, noise and the like can be effectively reduced, and the system structure can be more stable and reliable. The invention has very obvious practicability and good application prospect.

Drawings

The present invention will be described in further detail below with reference to the drawings and examples, but it should be understood that the drawings are designed solely for purposes of illustration and are not necessarily drawn to scale, but rather are intended to conceptually illustrate the structural configurations described herein.

FIG. 1 is a schematic cross-sectional view of an embodiment of a split grinding sub according to the present invention.

Figure 2 is a side view of the split grinding sub embodiment shown in figure 1.

Detailed Description

First of all, it should be noted that the composition, operating principle, characteristics and advantages of the split-type grinder, the wheel tread sweeping device for a railway vehicle and the railway vehicle according to the present invention will be described below by way of example, but it should be understood that all the descriptions are given for illustrative purposes only and thus should not be construed as forming any limitation on the present invention. In this document, the technical term "connected" and its derivatives cover that one component is directly connected to another component and/or indirectly connected to another component.

Furthermore, to any single feature described or implicit in an embodiment or shown or implicit in the drawings, the invention still allows any combination or permutation to continue between the features (or their equivalents) without any technical impediment, thus achieving more other embodiments of the invention that may not be directly mentioned herein.

The general structure of an embodiment of the split grinding sub according to the present invention is shown only schematically in fig. 1, and the side view structure of the embodiment of the split grinding sub is shown in fig. 2, and the technical solution of the present invention will be described in detail with reference to the above two drawings.

As shown in fig. 1, three grinding subassemblies 1 and a connecting member 2 are provided in the split grinding machine 100, and the integral structure of the split grinding machine 100 is constituted by these constituent parts. Specifically, the connecting member 2 is detachably mounted on the brake head of the rail vehicle, for example, by any suitable concave-convex structure 21 (such as a groove, a projection or a combination structure thereof, such as a dovetail groove), so that the mounting hook connecting structure commonly used in the conventional grinding sub-product can be changed, the overall structure of the system can be more stable by means of the concave-convex structure 21, such as the dovetail groove exemplarily shown in fig. 2, and the operations of mounting, maintaining, replacing and the like of the grinding sub can be more rapidly and conveniently performed.

For the abrasive sub-assembly 1 described above, it may include a friction body 11 and a support body 12. Wherein the supporting body 12 is configured to provide a supporting, connecting, etc. function for the friction body 11, and the friction body 11 can be connected to the connecting member 2 through the supporting body 12. For example, as shown in fig. 1 and 2, the supporting body 12 may be configured to have a cylindrical boss 121, so that the cylindrical boss 121 can be inserted through the mounting hole 23 of the connecting member 2, and can be fixed to the connecting member 2 using a mounting member such as a spacer 4 (e.g., a C-shaped spacer, a square spacer, etc.), which is not only simple and stable, easy to operate, but also safe and reliable, and can significantly reduce adverse effects due to frictional vibration, impact, and noise by being used in cooperation with the above-described concave-convex structure 21.

The support body 12 is also commonly referred to in the industry as a "steel backing", "backing plate", etc., but it should be understood that the support body 12 in the present invention may be made using any suitable material, including, for example, steel, iron, alloy materials, etc., and that the actual shape configuration of the support body 12 is not limited to plate-like, but is permitted to have any suitable shape configuration possible to better meet the needs of various applications. Additionally, for different abrasive subassemblies 1, their respective supports 12 may be made of the same or different materials and may have the same or different shape configurations. For example, the support bodies 12 in the three grinding subassemblies 1 shown in fig. 1 may be configured to have the same shape, for example, to improve the versatility of the parts and to help reduce the manufacturing, use, and maintenance costs of the product.

Generally, the friction body 11 and the support body 12 can be joined together to form the abrasive sub-assembly 1 using any of a number of possible connections. For example, in an alternative case, the friction body 11 and the supporting body 12 may be integrally formed by hot pressing and then sintered and cured to form a whole, thereby sufficiently ensuring the overall strength of the grinding sub-assembly 1 and avoiding an undesirable situation that the friction body 11 is separated from the supporting body 12 due to some special circumstances during use. For another example, the friction body 11 and the supporting body 12 may be fastened together by using a connecting member such as a bolt, a nut, or the like, alone or in combination, or may be connected together by using an adhesive agent, alone or in combination.

With continued reference to fig. 1, in this embodiment, each of the friction bodies 11 in the three grinding subassemblies 1 are arranged with their respective surfaces 111 facing outwardly for enabling frictional contact with the tread of a rail vehicle wheel during use. For example, in the alternative, the surfaces 111 of the friction bodies 11 in the grinding subassemblies 1 may be arranged such that the overall surface formed by them is rounded as shown in fig. 1, although such overall surface may be provided in any suitable shape, such as wavy, including partially planar, etc., as may be appropriate for each possible application.

As shown in fig. 1, in the split grinder 100, three grinding subassemblies 1 are spaced apart from each other to form two gaps therebetween, i.e., gap G1 and gap G2, respectively. Because the gap structures are innovatively arranged between the friction bodies 11, the contact area between the friction bodies 11 and the wheel tread can be effectively reduced, and heat, abrasive dust and the like can be promoted to be discharged outwards in time from the channels provided by the gaps, so that the temperature generated when the friction surfaces of the grinding rollers are under the same working condition can be obviously reduced, the metal inlaying of the grinding rollers can be effectively avoided, and the possibility of scratching the wheel by the metal inlaying is reduced.

It should be noted that, in a specific application, the arrangement of the gap between the friction bodies 11 can be flexibly set according to actual requirements. For example, while in the embodiment shown in FIG. 1 the two gaps G1 and G2 between different friction bodies 11 are configured to have the same width as each other, in some embodiments it is entirely possible to configure the widths of these gaps to be different from each other or identical, i.e., the widths of the gaps in the split grinder are allowed to be the same or different. Furthermore, in some embodiments, it is also possible to provide only one gap in the split grinder, rather than requiring that a gap must be provided between two adjacent grinding subassemblies 1, i.e., in some instances to allow some adjacent grinding subassemblies 1 in the split grinder to be closely arranged to each other without a gap being provided therebetween.

It should be noted that in the split-type grinder according to the present invention, the friction bodies 11 of the respective grinding sub-assemblies 1 may be made of the same material or different materials. Likewise, the support body 12 in each grinding subassembly 1 is also permitted to be made of the same or different materials. In addition, the friction body 11 may be a shape-modified friction body, a viscosity-increased friction body, or a combination thereof. For example, for each friction body 11 located at different positions, it can be considered that the friction body 11 of one or a plurality of grinding subassemblies 1 in the split-type grinder is a shape-modifying friction body according to the actual condition of the friction body in frictional contact with the wheel tread, and the friction body 11 of the other one or a plurality of grinding subassemblies 1 is a viscosity-increasing friction body or both the shape-modifying friction body and the viscosity-increasing friction body, so that the split-type grinder has more excellent comprehensive performance, is more flexible in use, and can be fully suitable for different application occasions.

In addition, in the split-type grinder 100 shown in fig. 1, three elastic members 3 are respectively provided between the supporting body 12 and the connecting member 2 of the three grinding sub-assemblies 1, and such elastic members 3 may be any members capable of providing an elastic deformation function, such as a disc spring, a coil spring, etc., and may be received in the hole grooves 22 formed in the connecting member 2. For example, in the embodiment shown in fig. 1, the above-mentioned holes 22 are countersunk, and then disc springs are installed as the elastic members 3 in these holes 22.

By adopting the above structural arrangement, when the split type grinder is used, the surface 111 of the friction body 11 therein will be in frictional contact with the wheel tread surface, so as to realize cleaning, thickening and other treatments of the wheel tread surface by the grinder. When the contour of the grinder cannot be completely attached to the contour of the wheel (for example, the arc center of the whole surface of the grinder and the center of the wheel are not at the same height), part of one or some friction bodies 11 of the grinder must first contact the wheel, at this time, under the combined action of air pressure and the wheel tread, the friction bodies 11 of the grinder 1 and the supporting body 12 transfer the deflection angle to the elastic component 3, and the elastic deformation characteristic of the latter can be timely and accurately adjusted to enable the grinder and the wheel tread to be attached to the maximum extent; simultaneously, through setting up elastomeric element 3, can reduce rail vehicle vibration, impact and noise on vertical, horizontal, vertical, this life that can effectively improve spare part guarantees the holistic security and the reliability of system.

In addition, the present invention provides a wheel tread sweeping device for a rail vehicle comprising a split grinding sub designed according to the present invention, such as the split grinding sub embodiment that has been exemplarily discussed above in connection with fig. 1 and 2, so that these features and advantages of the inventive solution discussed above can be achieved over the prior art. In practical application, the split type grinding wheel can be detachably or fixedly arranged on the brake head holder, and the split type grinding wheel can be used as a part of the whole wheel tread cleaning device for cleaning, thickening and the like of the wheel tread.

The split type grinding wheel and the other parts of the wheel tread surface cleaning device provided by the invention can be designed, manufactured and sold respectively, or can be assembled together and then sold integrally. Whether formed as a monomer before combination or as a whole after combination, are within the scope of the present invention.

In addition, the invention also provides a railway vehicle, and one or more split-type grinding bodies designed according to the invention or one or more wheel tread surface cleaning devices designed according to the invention can be arranged on the railway vehicle according to application requirements. It should be noted that the rail vehicles described above may include, but are not limited to, numerous types such as subway locomotives, high-speed rail locomotives, bullet trains, urban light rail trains, and the like.

The split-type grinding wheel, the wheel tread cleaning device for a railway vehicle and the railway vehicle according to the present invention have been explained in detail by way of examples only, which are provided only for illustrating the principle of the present invention and the embodiments thereof, and not for limiting the present invention, and those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present invention. For example, although the above embodiment is exemplified by arranging three grinding subassemblies simultaneously in a split grinding machine, in practical applications, the number of grinding subassemblies arranged in the split grinding machine may be flexibly increased or decreased according to the needs, for example, two, four or more grinding subassemblies may be arranged simultaneously. Accordingly, all equivalents are intended to be included within the scope of this invention and defined in the claims which follow.