Subway door leaf glide way

Abstract

The utility model discloses a subway door leaf glide way which comprises a long-strip-shaped bottom plate, a side wall and a limiting block, the side wall is perpendicularly arranged on the edge of one side of the long edge of the bottom plate, and the limiting block, the bottom plate and the side wall are perpendicular at the same time and intersect at the same vertex. The bottom plate, the side walls and the limiting blocks are integrally formed; the limiting block is provided with a transition arc face tangent to the inner side face of the side wall. According to the utility model, an integral forming process is adopted, only one step of casting is needed in the preparation process, cutting, welding and the like of plates are not needed, and the defects of plate deformation caused by thermal cutting, welding metal melting and out-of-tolerance of size and form and location caused by material forming after condensation shrinkage and insufficient yield can be effectively overcome in the preparation process; the product yield is improved; the efficiency is high in the preparation process, and the construction period can be effectively shortened; and in the aspect of personnel allocation, only one type of work needs to be cast, personnel allocation is relatively simple, and the management cost is relatively low.

Description

Technical Field

[0001] The utility model relates to a subway door leaf sliding slideway, belonging to the field of rail transportation. Background Art

[0002] As an important means of transportation in modern cities, subways are used very frequently. The maintenance status of their parts will directly affect the operating costs and riding experience. As the most frequently opened and closed parts of subways, the structural design and processing technology of subway doors will directly affect the production and maintenance costs of subways. The downhill slide products currently used in subways are generally connected into a whole by welding multiple parts. The production process involves multiple processes such as sheet laser cutting, sheet metal bending and forming, cutting processing, welding, and grinding. There are many processes and the composition of different types of work is relatively complex. There is a general problem of insufficient labor efficiency in the production process. In addition, products are often deformed and shrunk in size due to insufficient skills of personnel and subjective factors of personnel during operation, which ultimately affects the product yield (qualified rate) and has a serious impact on production costs and processing cycles. How to simplify the production process, simplify the personnel structure, and reduce the impact of welding processes on product yields have become important technical issues that need to be solved. Utility Model Content

[0003] In order to solve the technical problems in the above-mentioned background technology that the manufacturing process is long and the welding process is greatly affected by subjective factors, resulting in a high defective rate, the utility model provides a subway door leaf sliding slide, which adopts an integrated molding, and there is no cumulative error of different components in its preparation process that causes a decrease in product yield, and it only needs one casting process to be formed. After setting up the process flow, the preparation is relatively simple, and there is no need to be equipped with highly skilled operators of multiple trades. The preparation efficiency is high and the construction period can be effectively shortened; the contact position with the subway door latch adopts a second-order arc surface transition, which can effectively buffer the stress impact when closing the door, making the closing process of the subway door softer and effectively protecting the door structure.

[0004] The technical solution for achieving the purpose of the utility model is: a downward slide of a subway door leaf, comprising a long strip bottom plate, a side wall and a limit block, wherein the side wall is vertically arranged at an edge of one side of the long side of the bottom plate, the limit block is perpendicular to the bottom plate and the side wall at the same time and the three intersect at the same vertex; the bottom plate, the side wall and the limit block are integrally formed; the limit block is provided with a transition arc surface tangent to the inner side surface of the side wall.

[0005] The utility model adopts one-piece molding, and there is only one casting step in the preparation process. There is no need to use plates for cutting, chip processing, welding, etc. In the preparation process, it can effectively overcome the insufficient yield caused by cutting errors, thermal deformation, welding process fluctuations, etc., and prevent the shrinkage problem caused by uneven stress due to metal recrystallization during the welding process; the preparation process is highly efficient and the construction period can be effectively shortened; in terms of staffing, only one type of work, casting, is needed, the staffing is relatively simple, and the management cost is relatively low.

[0006] The limit block is provided with a transition arc surface tangent to the inner side surface of the side wall, the first-order arc surface of the second-order transition arc surface is tangent to the side wall, one end of the second-order arc surface is connected to the first-order arc surface, and the other end extends to the edge of the bottom plate.

[0007] When in use, the bolt slides along the side wall, then enters the first curved surface, then passes through the second curved surface and is slowed down and paused, and finally stops.

[0008] The bottom plate is provided with a mounting hole, and the side of the limit block away from the bottom plate is also provided with a positioning arc. When in use, the positioning arc is positioned and clamped with the external slot, and the arc position is in contact with the external slot. When the lower slide of the subway door leaf is impacted as a whole, the stress distribution on the arc surface is more balanced than that of the linear clamping method, and the overall damage to the slide is less.

[0009] The connection between the bottom plate and the side wall is provided with a circular chamfer. Compared with a right-angle connection, the provision of a chamfer can effectively reduce the casting precision, while making the stress distribution more uniform, and the overall strength of the subway door lower slide casting is higher.

[0010] A notch is provided at one end of the connection between the bottom plate and the side wall away from the limit block, and a positioning protrusion is also provided at the end of the bottom plate away from the side wall. When in use, positioning can be achieved through the notch and the positioning arc position, which is convenient for staff to quickly install.

[0011] The process adopts high-precision powder metallurgy process or precision investment casting process with one-piece molding process. During production, the formula can be improved according to the requirements of the casting to adapt to the specific working environment.

[0012] The preparation material is austenitic stainless steel. At this time, the subway door leaf lower slide casting has stronger impact resistance, and the stainless steel has certain corrosion resistance.

[0013] By adopting the above technical solution, the utility model has the following beneficial effects:

[0014] (1) The utility model adopts one-piece molding, and there is only one casting step in the preparation process. There is no need to use plates for cutting, chip processing (finishing), welding, etc. In the preparation process, it can effectively overcome the insufficient yield caused by uneven cutting, welding process fluctuations, etc., and prevent shrinkage problems caused by uneven stress due to differences in welding recrystallization; the preparation process is highly efficient and can effectively shorten the construction period; in terms of staffing, only one type of work, casting, is required, the staffing is relatively simple, and the management cost is relatively low.

[0015] (2) The transition arc surface between the limit block and the side wall is a second-order transition arc surface. When in use, the door bolt slides along the side wall, then enters the first arc surface, then passes through the second arc surface and is decelerated and paused, and finally stops. The force on the downward slide of the subway door leaf is more evenly distributed.

[0016] (3) The utility model is provided with a mounting hole on the bottom plate, and a positioning protrusion is provided on the side of the limit block away from the bottom plate. When in use, the positioning arc is positioned and connected with the external slot, and the arc position is aligned with the external slot. When the entire lower slideway of the subway door leaf is impacted, the stress distribution on the arc surface is more balanced than that of the linear connection method, and the overall damage to the slideway is less.

[0017] (4) The connection between the bottom plate and the side wall of the utility model has a circular chamfer. Compared with the right-angle connection, the chamfer can effectively reduce the casting accuracy and make the stress distribution more uniform. The overall strength of the subway door leaf lower slide casting is higher.

[0018] (5) A notch is provided at one end of the connection between the bottom plate and the side wall of the utility model, which is away from the limit block. A positioning arc is also provided at the end of the bottom plate away from the side wall. When in use, positioning can be achieved through the notch and the positioning arc, which is convenient for workers to quickly install.

[0019] (6) The utility model adopts a high-precision powder metallurgy process for one-piece molding. During production, the formula can be improved according to the casting requirements to adapt to the specific working environment.

[0020] (7) The new type of preparation material used in this invention is high manganese steel, which has stronger impact resistance and longer service life than general castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0022] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0023] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0024] The reference numerals in the accompanying drawings are: bottom plate 1, side wall 2, stopper 3, transition arc surface 4, first-step arc surface 41, second-step arc surface 42, mounting hole 5, positioning arc 6, notch 7, positioning protrusion 8 DETAILED DESCRIPTION

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the embodiments of the present utility model, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0030] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected", and "connected" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the scope of protection of the utility model.

[0031] (Example 1)

[0032] See Figure 1~2A subway door leaf downward slide of the present embodiment comprises a long strip bottom plate 1, a side wall 2 and a limit block 3, wherein the side wall 2 is vertically arranged at one edge of the long side of the bottom plate 1, the limit block 3 is vertical to the bottom plate 1 and the side wall 2 and the three intersect at the same vertex; the bottom plate 1, the side wall 2 and the limit block 3 are integrally formed; the limit block 3 is provided with a transition arc surface 4 tangent to the inner side surface of the side wall 2.

[0033] In the above structure, when the door is closed, the door stop rod can slide in the slideway. Since the transition arc surface 4 is relatively smooth, the door closing process is relatively smooth, and no abnormal noise or large sudden force will be generated, thereby giving passengers a better experience.

[0034] The base plate 1 is provided with a mounting hole 5, and the side of the limit block 3 away from the base plate 1 is also provided with a positioning arc 6. When installed, the positioning arc 6 can be used to fix it to the vehicle door. Its sharp angled position close to a triangle has good stability, and the probability of sliding is greatly reduced, which is beneficial to the overall stability of the slide installation.

[0035] The connection between the bottom plate 1 and the side wall 2 is provided with a circular chamfer, which is conducive to mold making during the casting mold opening process, and the overall stress distribution of the workpiece is relatively uniform, which can effectively prevent the connection between the bottom plate 1 and the side wall 2 from being excessively stressed and fractured.

[0036] A notch 7 is provided at the end of the connection between the bottom plate 1 and the side wall 2 away from the limit block 3, and a positioning protrusion 8 is also provided at the end of the bottom plate 1 away from the side wall 2. At this time, the positioning protrusion 8 can be used as a connecting point when connecting the two slideways, and the connection is more uniform.

[0037] A subway door leaf lower slide of the present embodiment is manufactured by an integrated molding process of high-precision powder metallurgy or precision investment casting, which has higher production efficiency; its preparation material is austenitic stainless steel, which is beneficial to improving environmental corrosion resistance. In order to prevent the surface from being corroded by humid air, the surface can also be nickel-plated to improve wear resistance.

[0038] (Example 2)

[0039] This embodiment is basically the same as the embodiment 1, except that: the transition arc surface 4 is a second-order transition arc surface composed of a first-order arc surface 41 and a second-order arc surface 42, wherein the first-order arc surface 41 of the second-order transition arc surface 4 is tangent to the side wall 2, and one end of the second-order arc surface 42 is connected to the first-order arc surface 41, and the other end extends to the edge of the bottom plate 1. In this way, when the subway door is closed, its door stop rod first contacts the first-order arc surface 41 and then contacts the second-order arc surface 42, so that the door closing process is smoother and the impact force on the door body is smaller.

[0040] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific 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 principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A subway door leaf downward slide, characterized in that: The invention comprises a long strip bottom plate (1), a side wall (2) and a stop block (3), wherein the side wall (2) is vertically arranged at an edge of a long side of the bottom plate (1), and the stop block (3) is vertically arranged at the bottom plate (1) and the side wall (2), and the three intersect at the same vertex; the bottom plate (1), the side wall (2) and the stop block (3) are integrally formed; and the stop block (3) is provided with a transition arc surface (4) tangent to the inner side surface of the side wall (2).

2. A subway door slideway according to claim 1, characterized in that: The transition arc surface (4) between the limit block (3) and the side wall (2) is a second-order transition arc surface, wherein the first-order arc surface (41) of the second-order transition arc surface is tangent to the side wall (2), and one end of the second-order arc surface (42) is connected to the first-order arc surface (41), and the other end extends to the edge of the bottom plate (1).

3. A subway door slideway according to claim 1, characterized in that: The bottom plate (1) is provided with a mounting hole (5), and the side of the limit block (3) away from the bottom plate (1) is also provided with a positioning arc (6).

4. A subway door slideway according to claim 1, characterized in that: The connection between the bottom plate (1) and the side wall (2) is provided with a circular chamfer.

5. The subway door slideway according to claim 1, characterized in that: A notch (7) is provided at the end of the connection between the bottom plate (1) and the side wall (2) away from the limiting block (3), and a positioning protrusion (8) is also provided at the end of the bottom plate (1) away from the side wall (2).

6. A subway door leaf slideway according to claim 2, characterized in that: High-precision powder metallurgy process using one-piece molding technology.

7. A subway door sliding slide according to claim 6, characterized in that: The material used for making it is austenitic stainless steel.

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