Tricycle tire capable of stably walking on railway ballastless track

Abstract

The invention provides a railway ballastless track stable walking tricycle tire which is characterized by comprising a body with a cavity in the middle, the body comprises an inner side tire part and an outer side tire part, the outer diameter of the outer side tire part is smaller than that of the inner side tire part, and a positioning step is formed between the outer side tire part and the inner side tire part; a plurality of convex patterns are arranged on the outer circumferential surface of the outer tire part, and guide slopes are formed on the two sides of the convex patterns respectively, so that a splayed structure is formed between every two adjacent convex patterns. The positioning step is formed between the outer tire part and the inner tire part of the tire body, so that the tire can be effectively ensured to stably walk on a ballastless track of a railway, when the tire walks, the convex pattern part utilizes a guide slope with a smaller gradient as a buffer, and two adjacent convex patterns can form a height difference compensation effect, so that the stability of the tire is improved. The tires gradually pass through the sleeper base exposed platform with the large height difference, the walking stability of the tires on the double-block type sleeper is greatly improved, and the double-block type sleeper can be suitable for different types of plate type ballastless track beds.

Description

Technical Field

[0001] The invention belongs to the field of material transportation during the construction period of railway engineering, and in particular relates to a tricycle tire for stably running on a railway ballastless track. Background Art

[0002] During the operation and maintenance phase, tunnels may undergo construction work such as disease treatment and equipment replacement. During the construction process, it is often necessary to use electric tricycles for transportation on the laid ballastless track. Usually, the standard track gauge is 1435mm, and the double-block sleepers on the inside of the track occupy a certain space. However, the wheelbase of a general tricycle is about 1m, which is larger than the spacing of the double-block sleepers on the inside of the track. As a result, the tricycle will contact the double-block sleepers when driving on the ballastless track, causing up and down vibrations and bumps, and even the risk of rollover, making the driving extremely unstable. This not only affects safe and efficient transportation, but is also not conducive to the long-term operation of electric tricycles. Therefore, designing a tricycle tire suitable for stable driving on railway ballastless tracks is of great significance to improving construction efficiency and saving costs. Summary of the invention

[0003] In view of this, the invention aims to overcome the defects in the prior art and proposes a tricycle tire that can stably travel on a railway ballastless track.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A tricycle tire for stable running on a ballastless railway track comprises a body with a cavity in the middle, the body comprising an inner tire portion and an outer tire portion, the outer tire portion having an outer diameter smaller than that of the inner tire portion, and a positioning step formed therebetween; a plurality of external convex patterns are provided on the outer circumferential surface of the outer tire portion, and guide slopes are formed on both sides of the external convex patterns, so that an "eight"-shaped structure is formed between every two adjacent external convex patterns.

[0006] Furthermore, each external convex pattern is evenly distributed on the outer circumferential surface of the outer tire portion.

[0007] Furthermore, an arc-shaped portion is used for transition between the outer circumferential surface of the inner tire portion and its inner end surface.

[0008] Furthermore, the outer tire portion is provided with an outer reinforcement portion extending toward the center of the body cavity.

[0009] Furthermore, the inner tire portion is provided with an inner reinforcement portion extending toward the center of the body cavity.

[0010] Furthermore, an inner concave portion is provided between the guide slopes of two adjacent outer convex patterns.

[0011] Furthermore, the body is made of flexible rubber material.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] The present invention creates a positioning step between the outer tire portion and the inner tire portion of the tire body, which can effectively ensure that the tire runs stably on the ballastless track of the railway. The outer tire portion forms an open "eight"-shaped structure. When the tire is running, the outer convex pattern part uses the guide slope with a smaller slope as a buffer, and the two adjacent outer convex patterns can form a height difference compensation effect, so that the tire gradually passes through the exposed platform of the sleeper base with a larger height difference, which is convenient for the tire to run and can also play a shock-absorbing role. In addition, the tire body is made of rubber and therefore has a good elastic shock-absorbing effect. Such a structural design greatly improves the stability of the tire when running on the double-block sleeper and can be applicable to different types of plate-type ballastless track beds. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 A schematic diagram of the structure created by the present invention;

[0016] Figure 2 A schematic diagram of the three-dimensional structure created by the present invention;

[0017] Figure 3 A schematic diagram of the invention when creating a tire application;

[0018] Figure 4 It is a schematic diagram of the height difference compensation between the guide slope and the outer convex pattern in the invention. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] A tricycle tire for stable running on a railway ballastless track, such as Figures 1 to 4 As shown, it includes a body with a cavity in the middle, and the body includes an inner tire portion 1 and an outer tire portion 2. The outer diameter of the outer tire portion is smaller than the outer diameter of the inner tire portion, and a positioning step 3 is formed between the two. The inner protruding tread ensures that the tricycle travels along the track direction, avoiding the vehicle rollover caused by the lateral deviation of the driving direction, and reducing safety hazards. A plurality of external convex patterns 4 are provided on the outer circumferential surface of the outer tire portion, and guide slopes 5 are formed on both sides of the external convex patterns, so that an "eight"-shaped structure is formed between every two adjacent external convex patterns. Under load conditions, the open "eight"-shaped guide slope and the inner concave portion can be effectively fitted with different types of sleeper bases, and can be applied to ballastless tracks of different sizes and types, so that the vibration of the vehicle body is buffered.

[0024] The depth of the convex pattern is consistent with the height of the exposed platform 11 of the double-block sleeper base. The convex pattern is used to compensate for the height difference caused by the tire passing through the corners of the exposed platform of the sleeper base, thereby avoiding the vibration of the vehicle body caused by the sudden change in height difference; by widening the tread width, the force-bearing area is increased, and force concentration is avoided to reduce vibration, so that the tire can run more smoothly on the double-block sleeper. Compared with the ordinary tire structure design, the tire provided by the invention can run more smoothly on the ballastless railway track.

[0025] An arc-shaped transition 6 is used between the outer circumferential surface of the inner tire part and its inner end surface. The arc-shaped transition is consistent with the curvature of the bottom of the sleeper. The width of the arc-shaped transition (i.e., the dimension of the arc-shaped transition along the axial direction of the body) is about one-third of the width of the double-block sleeper 12, and the vertical height (i.e., the dimension of the arc-shaped transition along the radial direction of the body) is flush with the height of the double-block sleeper. The outer tire part is provided with an outer reinforcement part 7 extending toward the center of the body cavity. The inner tire part is provided with an inner reinforcement part 8 extending toward the center of the body cavity.

[0026] The outer tire part is arranged on the outer edge of the inner tire part, which can increase the wheelbase of the tire, reduce the cantilever of the vehicle body without reducing the carrying capacity, and ensure the driving stability of the tricycle. The inner tire part runs on the track plate to stabilize the vehicle body, and the outer tire part runs on the exposed platform of the sleeper base and the track plate to reduce the vibration generated when passing the exposed platform of the sleeper base.

[0027] An inner concave portion 9 is provided between the guide slopes of two adjacent outer convex patterns. The outer edge of the tire is concave, which is consistent with the curvature of the double-block sleeper, with higher fit and better stability. The outer tire width is slightly smaller than the exposed width of the sleeper base, and the inner tire width is one-third to one-half of the outer tire width, thereby reducing vibration by increasing the ground contact area.

[0028] The main body is made of flexible rubber material, and the external convex patterns are evenly distributed on the outer circumference of the outer tire. When the tire passes through the exposed platform corners of the sleeper base, the flexible rubber groove (i.e. the inner concave part) can fully wrap and fit the base corners with its own good elastic deformation performance, absorb the potential energy of the platform height difference, and restore the deformation after passing through the corners to release energy, thereby reducing vibration. After the vibration amplitude of the vehicle body is significantly reduced, the tricycle can run smoothly for a long time, improving the durability of the tricycle and saving costs.

[0029] The outer tire can increase the wheelbase to improve transportation safety and ensure the carrying capacity of the tricycle. The design of increasing the diameter of the inner tire can stabilize the vehicle body by using the track plate. The wide tread tire can increase the force area and reduce vibration. The "figure eight" open pattern can improve the stability of the vehicle body when walking on the sleeper through the guide slope and the height difference compensation of the outer convex pattern. In addition, since the "figure eight" open pattern guide slope and the inner concave platform are made of flexible rubber materials, the vibration of the vehicle body is further buffered, so that the tricycle can walk smoothly on the double-block sleeper and improve transportation efficiency. The shock absorption effect of this tire shape and pattern design can also improve the durability of electric vehicles and save costs.

[0030] In an optional embodiment, the end face of the outer tire portion is different from that of the outer tire portion and is designed as a concave structure 10, that is, the inner end face of the outer tire portion is inclined toward the middle cavity of the main body. When the tire is running, the outer tire portion is allowed to produce a certain amount of deformation in the axial direction to form better cushioning performance, and the inner reinforcement part and the outer reinforcement part can effectively prevent the tire from tearing from the opening when it is deformed.

[0031] The present invention creates a positioning step between the outer tire portion and the inner tire portion of the tire body, which can effectively ensure that the tire runs stably on the ballastless track of the railway. The outer tire portion forms an open "eight"-shaped structure. When the tire is running, the outer convex pattern part uses the guide slope with a smaller slope as a buffer, and the two adjacent outer convex patterns can form a height difference compensation effect, so that the tire gradually passes through the exposed platform of the sleeper base with a larger height difference, which is convenient for the tire to run and can also play a shock-absorbing role. In addition, the tire body is made of rubber and therefore has a good elastic shock-absorbing effect. Such a structural design greatly improves the stability of the tire when running on the double-block sleeper and can be applicable to different types of plate-type ballastless track beds.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tricycle tire for stable running on ballastless railway track, characterized in that: The invention comprises a main body with a cavity in the middle, the main body comprises an inner tire part and an outer tire part, the outer diameter of the outer tire part is smaller than the outer diameter of the inner tire part, and a positioning step is formed between the two; a plurality of external convex patterns are arranged on the outer circumferential surface of the outer tire part, and guide slopes are formed on both sides of the external convex patterns, so that an "eight"-shaped structure is formed between every two adjacent external convex patterns.

2. The tire of a tricycle for stable running on a ballastless railway track according to claim 1, characterized in that: The external convex patterns are evenly distributed on the outer circumferential surface of the outer tire portion.

3. The tire of a tricycle for stable running on a ballastless railway track according to claim 1, characterized in that: An arc-shaped portion is used for transition between the outer circumferential surface of the inner tire portion and its inner end surface.

4. The tire of a tricycle for stable running on a ballastless railway track according to claim 1, characterized in that: The outer tire portion is provided with an outer reinforcement portion extending toward the center of the body cavity.

5. The tire of a tricycle for stable running on a ballastless railway track according to claim 1, characterized in that: The inner tire portion is provided with an inner reinforcement portion extending toward the center of the body cavity.

6. The tire of a tricycle for stable running on a ballastless railway track according to claim 1, characterized in that: An inner concave portion is arranged between the guide slopes of two adjacent outer convex patterns.

7. A tricycle tire for stable running on a railway ballastless track according to any one of claims 1 to 6, characterized in that: The body is made of flexible rubber material.

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