Transition coupler and coupling method therefor

Abstract

A transition coupler and a coupling method for a transition coupler. The transition coupler comprises a coupler head and a coupler tail (7), wherein a coupling surface (601) is provided on the side of the coupler head coupled to a train coupler; a coupler head body (6) is provided between the coupling surface (601) and the coupler tail (7); a coupler knuckle structure is provided on the coupling surface (601), and is configured to be coupled to a coupler knuckle (3) of the train coupler; and a recessed tapered structure is provided on the coupling surface (601), and is configured to accommodate a protruding tapered structure (102) of the train coupler, and the recessed tapered structure comprises a cavity (602) formed from the coupling surface (601) towards the interior of the coupler head body (6).

Description

Transition coupler and its connection method

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 10, 2024, with application number 202411260408.2, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of rail vehicle couplers, and in particular to a transition coupler and a coupling method thereof. Background Art

[0003] A transition coupler is used to connect to a train's regular coupler during vehicle rescue operations. Different models and types of trains utilize different regular coupler types. Due to the structural differences between regular couplers, existing technologies offer universal transition couplers that can be used with a variety of regular coupler types. However, due to the fixed structure of universal couplers, they struggle to adapt to the subtle differences between different coupler types. Therefore, a preferred approach is to use dedicated transition couplers for each type of coupler.

[0004] Currently, rail transit transition couplers at home and abroad include Type 10 transition couplers, Shibata-type transition couplers, and locomotive transition couplers. However, for the current BSI-type official couplers, there is still no reliable transition coupler.

[0005] Summary of the Invention

[0006] The purpose of this application is to solve the above technical problems and to propose a transition coupler and a connection method thereof.

[0007] In a first aspect, the present application provides a transition coupler for coupling with a train coupler, the train coupler comprising a train coupler head, the train coupler head being formed with a train coupler convex cone and a train coupler concave cone, the train coupler tongue being telescopically provided on the train coupler convex cone toward the train coupler concave cone; the transition coupler comprising:

[0008] A transition coupler head and a transition coupler tail: wherein a transition coupler connecting surface is formed on one side of the transition coupler head connected to the train coupler, and a hook head body is formed between the transition coupler connecting surface and the transition coupler tail;

[0009] A hook tongue structure is formed on the transition coupler connection surface for connecting with the hook tongue of the train coupler; the hook tongue structure includes a transition coupler convex cone formed on the transition coupler connection surface, and a hook tongue block is provided on the side of the transition coupler convex cone close to the concave cone structure;

[0010] A concave cone structure is formed on the transition coupler connecting surface for accommodating the train coupler convex cone; the concave cone structure includes a concave cone cavity formed by the transition coupler connecting surface inside the hook head body.

[0011] In some embodiments of the first aspect, the hook tongue block is formed with a hook tongue block inclined surface, the wider end of the hook tongue block inclined surface is close to the transition coupler connecting surface, and the edge of the hook tongue block inclined surface close to the transition coupler connecting surface is contracted toward the side away from the concave cone structure to form the hook tongue of the transition coupler.

[0012] In some embodiments of the first aspect, the front side of the hook tongue block has a hook tongue block inclined surface, and the hook tongue block inclined surface is inclined from the front to the rear of the transition coupler away from the convex cone of the transition coupler, and the back side of the hook tongue block inclined surface is connected to the side wall of the concave cone cavity to form the hook tongue of the transition coupler.

[0013] In some embodiments of the first aspect, the bottom of the train coupler concave cone extends forward of the train coupler hook head to form a plate-like structure, and a first positioning boss is provided on the upper surface of the plate-like structure; a first auxiliary positioning block is provided at the bottom of the transition coupler convex cone; when the transition coupler is connected to the train coupler, the first auxiliary positioning block of the transition coupler cooperates with the first positioning boss of the train coupler for positioning.

[0014] In some embodiments of the first aspect, a second positioning boss is provided at the bottom of the convex cone of the train coupler; a second auxiliary positioning block is provided on the bottom inner surface of the concave cone cavity of the transition coupler, and the second auxiliary positioning block protrudes into the concave cone cavity; when the transition coupler is connected to the train coupler, the convex cone of the train coupler extends into the concave cone cavity of the transition coupler, and the second auxiliary positioning block cooperates with the second positioning boss for positioning.

[0015] In some embodiments of the first aspect, the bottom of the train coupler concave cone extends forward of the train coupler hook head to form a plate-like structure, and a third positioning boss is formed on the side of the plate-like structure facing below the convex cone; the bottom surface of the concave cone cavity of the transition coupler extends farther below the transition coupler hook head relative to the bottom surface of the convex cone of the transition coupler, and a transition structure connecting the bottom surface of the concave cone cavity and the bottom surface of the convex cone of the transition coupler is formed between the concave cone structure and the hook tongue structure, and the side of the transition structure facing below the convex cone is a transition side surface; when the transition coupler is connected to the train coupler, the transition side surface of the transition coupler cooperates with the third positioning boss of the train coupler for positioning.

[0016] In some embodiments of the first aspect, an extension block facing the concave cone structure is provided on the transition coupler convex cone. When the transition coupler is connected to the train coupler, the side surface of the extension block facing the concave cone structure cooperates with the side surface of the train coupler convex cone for positioning.

[0017] In some embodiments of the first aspect, the shape of the concave cone cavity of the transition coupler is adapted to the outer shape of the convex cone of the train coupler.

[0018] In some embodiments of the first aspect, a concave notch extending toward the hook tail of the transition coupler is formed on the side wall of the concave conical cavity of the concave conical structure of the transition coupler away from the hook tongue block, and the deconstruction handle of the train coupler is accommodated in the concave notch when the transition coupler is connected to the train coupler.

[0019] A second aspect of the present application provides a method for coupling a transition coupler, which is applied to the transition coupler described in any one of the first aspects, comprising the following steps:

[0020] The hook tongue block of the transition coupler fits with the hook tongue of the train coupler, and the transition coupler and the train coupler move close to each other. The hook tongue block of the transition coupler and the hook tongue of the train coupler squeeze each other so that the hook tongue of the train coupler retracts, and the hook tongue block of the transition coupler slides into the rear side of the hook tongue of the train coupler, and the pressure applied to the hook tongue of the train coupler disappears. The hook tongue of the train coupler extends out, limiting the hook tongue block of the transition coupler, and completing the connection.

[0021] In some embodiments of the second aspect, the coupler tongue of the train coupler includes a coupler tongue rod and a coupler tongue provided at the end of the coupler tongue rod, the coupler tongue having a coupler tongue inclined surface formed on a side of the coupler tongue facing the transition coupler, the coupler tongue being inclined in a direction away from the transition coupler; the coupler tongue block having a coupler tongue block inclined surface on a front side thereof, the coupler tongue block inclined surface being inclined from the front of the transition coupler to the rear away from the convex cone of the transition coupler, the inclinations of the coupler tongue inclined surface and the coupler tongue block inclined surface being complementary;

[0022] The coupling method also includes the following steps: during the coupling process of the transition coupler and the train coupler, the inclined surface of the hook tongue block of the transition coupler and the inclined surface of the hook tongue of the train coupler are fitted together; during the mutual squeezing of the hook tongue block of the transition coupler and the hook tongue of the train coupler, the hook tongue block of the transition coupler is guided to the rear side of the hook tongue of the train coupler through the cooperation of the inclined surface of the hook tongue block and the inclined surface of the hook tongue, thereby completing the coupling.

[0023] In some embodiments of the second aspect, the bottom of the train coupler concave cone extends forward of the train coupler hook head to form a plate-like structure, a first positioning boss is provided on the upper surface of the plate-like structure, and a first auxiliary positioning block is provided at the bottom of the transition coupler convex cone;

[0024] The coupling method also includes the following steps: during the coupling process between the transition coupler and the train coupler, the convex cone of the transition coupler extends into the interior of the concave cone of the train coupler, and the first auxiliary positioning block and the first positioning boss cooperate to position the train coupler and the transition coupler in the vertical direction.

[0025] In some embodiments of the second aspect, a second positioning boss is provided at the bottom of the convex cone of the train coupler; a second auxiliary positioning block is provided on the inner surface of the bottom of the concave cone cavity of the transition coupler, and the second auxiliary positioning block protrudes into the concave cone cavity;

[0026] The coupling method also includes the following steps: during the coupling process between the transition coupler and the train coupler, the convex cone of the train coupler extends into the concave cone cavity of the transition coupler, and the second positioning boss and the second auxiliary positioning block cooperate to position the train coupler and the transition coupler in the vertical direction.

[0027] In some embodiments of the second aspect, the bottom of the train coupler concave cone extends forward of the train coupler hook head to form a plate-like structure, and a third positioning boss is formed on the side of the plate-like structure facing below the convex cone; the bottom surface of the concave cone cavity of the transition coupler extends farther below the transition coupler hook head relative to the bottom surface of the convex cone of the transition coupler, and a transition structure connecting the bottom surface of the concave cone cavity and the bottom surface of the convex cone is formed between the concave cone structure and the coupler tongue structure, and the side of the transition structure facing below the convex cone is a transition side surface;

[0028] The coupling method further includes the following steps: during the coupling process between the transition coupler and the train coupler, the transition side surface on the transition coupler cooperates with the third positioning boss on the train coupler to perform positioning in the horizontal direction.

[0029] In some embodiments of the second aspect, an extension block is provided on the convex cone of the transition coupler, facing one side of the concave cone structure;

[0030] The coupling method further includes the following steps: during the coupling process between the transition coupler and the train coupler, the side surface of the extension block facing the concave cone structure cooperates with the side surface of the convex cone of the train coupler for positioning in the horizontal direction.

[0031] Compared with the prior art, the transition coupler provided by this application has the following beneficial effects:

[0032] 1. This transition coupler can be used for close-type couplers, especially BSI type couplers, realizing the development of transition couplers for BSI type couplers at home and abroad.

[0033] 2. Adapting to the special coupler-like tongue structure of BSI couplers, a fixed coupler tongue structure and a coupler tongue guide structure are designed. The special guiding function of the transition coupler can realize the automatic connection between the rescue train and the rescued train, meet the needs of rail transit train rescue and rescue, reduce the difficulty and cost of rescue, and ensure that the rescue time meets the requirements of railway passenger transportation.

[0034] 3. A new method for single-side extrusion automatic coupling of transition couplers has been applied for. With the cooperation of the fixed hook tongue of the transition coupler and multiple sets of positioning structures, the automatic coupling of the transition coupler can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1a is a perspective view of a BSI coupler;

[0037] Figure 1b is a second perspective view of the BSI coupler;

[0038] FIG2a is a perspective view of a transition coupler provided in an embodiment of the present application;

[0039] FIG2 b is a second perspective view of the transition coupler provided in an embodiment of the present application;

[0040] FIG2c is a third perspective view of the transition coupler provided in an embodiment of the present application;

[0041] FIG2 d is a bottom view of the transition coupler provided in an embodiment of the present application;

[0042] FIG3 is a perspective view of the coupling process of the transition coupler and the BSI coupler provided in an embodiment of the present application;

[0043] FIG4a is a cross-sectional view of a state 1 of the coupling process of a transition coupler and a BSI coupler provided in an embodiment of the present application;

[0044] FIG4b is a cross-sectional view of a second state of the coupling process of a transition coupler and a BSI coupler provided in an embodiment of the present application;

[0045] FIG5a is a cross-sectional view of a state 1 of the uncoupling process of a transition coupler and a BSI coupler provided in an embodiment of the present application;

[0046] FIG5b is a cross-sectional view of the second state of the uncoupling process of the transition coupler and the BSI coupler provided in an embodiment of the present application.

[0047] In the picture:

[0048] 100 - BSI coupler (i.e., train coupler); 110 - BSI coupler head; 111 - BSI coupler connecting surface; 112 - BSI coupler convex cone; 1121 - fourth positioning boss; 113 - BSI coupler concave cone; 114 - coupler tongue accommodating chamber; 115 - plate-like structure; 116 - first positioning boss; 117 - second positioning boss; 118 - third positioning boss; 119 - guide slope; 120 - BSI coupler tail; 130 - BSI coupler tongue; 131 - coupler tongue lever; 132 - coupler tongue; 133 - coupler tongue inclined surface; 140 - spring; 150 - unhooking handle;

[0049] 200-transition coupler; 210-transition coupler hook head; 211-transition coupler connecting surface; 212-transition coupler hook head body; 213-weight reduction hole; 214-concave notch; 220-transition coupler hook tail; 221-connecting pin hole; 230-hook tongue structure; 231-transition coupler convex cone; 232-hook tongue block; 2321-hook tongue block inclined surface; 233-extension block; 240-concave cone structure; 241-concave cone cavity; 251-first auxiliary positioning block; 252-second auxiliary positioning block; 260-transition structure; 261-transition side. DETAILED DESCRIPTION

[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0051] In the description of this application, it should be noted that the fixed connection described in this application can be a detachable fixed connection or an integrated fixed connection; the indicated orientation or positional relationship is based on the positional relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does 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 cannot be understood as a limitation on this application.

[0052] The terms "first" and "second" are used for descriptive purposes only and are not intended to imply relative importance.

[0053] The present invention provides a transition coupler and a method for connecting a transition coupler. The method is suitable for connecting a train-type coupler in which the coupler tongue is inserted from the side of the coupler body, such as a BSI coupler. This embodiment uses a BSI coupler as an example to illustrate the structure and connection method of the transition coupler.

[0054] In the description of the coupler or its components in this application, the front direction is the direction toward the opposite coupler, and the rear direction is the direction away from the opposite coupler.

[0055] First, the structure of the BSI coupler 100 will be described with reference to FIG. 1 a and FIG. 1 b .

[0056] The BSI coupler 100 includes a BSI coupler head 110. One end surface (specifically, the front end surface) of the BSI coupler head 110 forms a BSI coupler connection surface 111. A BSI coupler convex taper 112 and a BSI coupler concave taper 113 are formed on one side (specifically, the front side) of the BSI coupler connection surface 111. The rear end of the BSI coupler head 110 forms a BSI coupler tail 120. The BSI coupler head body is located between the BSI coupler connection surface 111 and the BSI coupler tail 120.

[0057] Further referring to Figures 4a-5b, a knuckle-receiving cavity 114 is formed within the convex cone 112 of the BSI coupler 100. A BSI coupler knuckle 130 is mounted within this cavity. This knuckle 130 comprises a knuckle lever 131 and a tongue 132. One end of the knuckle lever 131 is connected to an unhooking handle 150, while the other end of the lever is provided with a tongue 132. The tongue 132 extends from an opening in the knuckle-receiving cavity 114 toward the concave cone 113 of the BSI coupler. Pulling the unhooking handle 150 controls the entire knuckle 130, causing the tongue 132 to retract into the knuckle-receiving cavity 114. Specifically, a spring 140 is mounted on the knuckle lever 131. Pulling the knuckle lever 131 compresses the spring 140, causing the tongue 132 to retract. Upon releasing the unhooking handle 150, the spring 140 returns to its original length, causing the tongue 132 to extend.

[0058] In order to position the connection between the BSI coupler and the transition coupler, a positioning structure is designed on the BSI coupler, which is described in detail as follows.

[0059] The bottom of the concave cone 113 of the BSI coupler 100 extends forward of the hook head 1 to form a plate-like structure 115. A first positioning boss 116 is provided on the upper surface of the plate-like structure 115. A second positioning boss 117 is provided at the bottom of the convex cone 112. A stepped transition structure is formed between the plate-like structure 115 and the convex cone 112. Specifically, the plate-like structure 115 extends downward relative to the convex cone 112, and the side end surface of the stepped transition structure facing the convex cone 112 is a stepped transition surface. This side end surface has a third positioning boss 118. In other words, the third positioning boss 118 is formed on the side of the plate-like structure 115 facing downward from the convex cone 112. Optionally, the first, second, and third positioning bosses 116, 117, and 118 are each protrusions that protrude from the respective surfaces. Optionally, the protrusions may have a guide slope 119 formed at the front, connecting the surface on which they are located and the highest point of the protrusion.

[0060] A hook tongue inclined surface 133 is formed on the front side of the hook tongue 132, and the hook tongue inclined surface 133 is inclined in the direction away from the transition coupler. The hook tongue inclined surface 133 makes the head of the hook tongue 132 longer, and the hook tongue 132 has a connecting hook formed on the back side of the hook tongue inclined surface 133.

[0061] An embodiment of the present application provides a transition coupler for coupling with a train coupler (e.g., the coupling of the above-mentioned BSI coupler) in which the coupler tongue is inserted from the side of the hook body, see Figures 2a-2d.

[0062] The transition coupler 200 includes a transition coupler head 210 and a transition coupler tail 220. A transition coupler attachment surface 211 is formed on the side (i.e., the front side) where the transition coupler head 210 is attached to the BSI coupler 100. A main body 212 of the transition coupler 200 is located between the attachment surface 211 and the transition coupler tail 220. A coupling pin hole 221 is provided in the transition coupler tail 220. A weight-reducing hole 213 is provided in the main body 212 of the transition coupler 200.

[0063] A hook tongue structure 230 is formed on the transition coupler connecting surface 211 for connecting with the hook tongue of a train coupler, i.e., the BSI coupler hook tongue 130 in this embodiment;

[0064] A concave cone structure 240 is formed on the transition coupler connecting surface 211 for accommodating the train coupler convex cone 112, i.e., the convex cone 112 of the BSI coupler in this embodiment; the concave cone structure 240 includes a concave cone cavity 241 formed from the transition coupler connecting surface 211 to the inside of the hook head body 212 of the transition coupler 200.

[0065] In some embodiments of the present application, the coupler tongue structure of the transition coupler is as follows.

[0066] The tongue structure 230 includes a transition coupler convex cone 231 formed on the transition coupler connection surface 211, protruding relative to the connection surface 211. A tongue block 232 is provided on the side of the transition coupler convex cone 231 near the concave cone structure 240. The tongue block 232 has an inclined tongue block surface 2321, with the wider end of the inclined tongue block surface 2321 near the transition coupler connection surface 211. The edge of the inclined tongue block surface 2321 near the transition coupler connection surface 211 converges toward the side away from the concave cone structure 240, forming a structure similar to a card table, forming the tongue of the transition coupler.

[0067] In the above embodiment, a tongue block 232 is fixedly mounted on the side of the transition coupler's convex cone 231 adjacent to the concave cone structure 240. The front side of the tongue block 232 has an inclined tongue block surface 2321. This inclined surface 2321 is tilted from the front of the transition coupler 200 toward the rear, away from the convex cone 231. The back surface of the inclined surface 2321 connects to the sidewall of the concave cone cavity 241, forming the tongue of the transition coupler. The inclination of the tongue block 2321 of the transition coupler complements that of the inclined surface 133 of the BSI coupler 100.

[0068] During the coupling operation, the transition coupler's coupling surface 211 is aligned with the BSI coupler's coupling surface 111, and the BSI coupler's uncoupling handle 150 is pulled. The inclined surface 2321 of the transition coupler's tongue block 200 aligns with the inclined surface 133 of the BSI coupler's tongue, with their inclinations aligned. The interaction of these two inclined surfaces causes the tongue block 232 of the transition coupler 200 to press against the tongue 132 of the BSI coupler, guiding each other. This compresses the spring 140, and the transition coupler 200, guided by the two inclined surfaces, slides behind the tongue 132 of the BSI coupler 100, causing the tongues of the two couplers to engage, completing the coupling.

[0069] In some embodiments of the present application, a first auxiliary positioning block 251 is provided at the bottom of the transition coupler convex cone 231 , and the first auxiliary positioning block 251 is protruded relative to the bottom surface of the transition coupler convex cone 231 .

[0070] In some embodiments of the present application, a first auxiliary positioning block 251 is provided at the bottom of the transition coupler hook head 210 corresponding to the transition coupler convex cone 231 , and the first auxiliary positioning block 251 is protruded relative to the bottom surface of the transition coupler hook head 210 .

[0071] During the coupling process of the transition coupler 200 and the BSI coupler 100, the convex cone 231 of the transition coupler extends into the concave cone 113 of the BSI coupler 100, and the first auxiliary positioning block 251 formed on the plate-like structure 115 in front of the hook head 110 of the BSI coupler 100 cooperates with the first positioning boss 116 formed on the hook head 110 of the BSI coupler 100. That is, the two protruding blocks abut against each other, completing the limiting positioning between the two couplers on the first side in the vertical direction.

[0072] In some embodiments of the present application, a second auxiliary positioning block 252 is provided on the bottom inner surface of the concave conical cavity 241 of the transition coupler 200 , and the second auxiliary positioning block 252 protrudes into the concave conical cavity 241 .

[0073] During the coupling process between the transition coupler 200 and the BSI coupler 100, the convex cone 112 of the BSI coupler 100 extends into the concave cone cavity 241 of the transition coupler 200, and the second positioning boss 117 provided at the bottom of the convex cone 112 of the BSI coupler 100 cooperates with the second auxiliary positioning block 252 of the transition coupler 200. That is, the two protruding blocks abut against each other, completing the limiting positioning between the two couplers on the second side in the vertical direction.

[0074] In some embodiments of the present application, the bottom surface of the concave conical cavity 241 of the transition coupler 200 extends further below the transition coupler head 210 relative to the bottom surface of the convex cone 231 of the transition coupler. A transition structure 260 is formed between the concave conical structure 240 and the tongue structure 230, connecting the bottom surface of the concave conical cavity 241 and the bottom surface of the convex cone 231 of the transition coupler. The side of the transition structure 260 facing below the convex cone 231 of the transition coupler is a transition side surface 261. Specifically, the transition structure 260 is an arc-shaped structure that transitions from the bottom surface of the convex cone 231 of the transition coupler to the bottom surface of the concave conical cavity 241. One side surface of the arc-shaped structure constitutes the inner wall of the concave conical cavity 241, and the other side surface of the arc-shaped structure is the transition side surface 261. During the coupling process of the transition coupler 200 and the BSI coupler 100, the transition side surface 261 on the transition coupler 200 cooperates with the third positioning boss 118 on the BSI coupler 100, that is, the transition side surface 261 and the third positioning boss 118 abut against each other, completing the limit positioning between the two couplers in the horizontal direction.

[0075] In some embodiments of the present application, an extension block 233 is provided on the convex cone 231 of the transition coupler, facing the concave cone structure 240. When the transition coupler 200 is coupled to the BSI coupler 100, the side surface of the extension block 233 facing the concave cone structure 240 mates with the side surface of the convex cone 112 of the BSI coupler, i.e., the two side surfaces abut against each other, thereby achieving horizontal positioning between the two couplers.

[0076] In some embodiments, an extension block 233 is provided on the transition coupler's convex cone 231. This extension block 233 and the coupler tongue block 232 are located on the same side and project outward relative to the transition coupler's convex cone 231. The BSI coupler 100 also has a fourth positioning boss 1121 protruding from the side of the convex cone 112 near the concave cone 113. When the transition coupler 200 is coupled to the BSI coupler 100, the side of the extension block 233 engages with the side of the fourth positioning boss 1121 of the BSI coupler 100, i.e., the two side surfaces abut against each other, thereby achieving horizontal positioning between the two couplers.

[0077] Through the coordination of the above four sets of positioning structures, the positioning between the transition coupler and the BSI coupler can be achieved in two directions of the horizontal dimension and two directions of the vertical dimension, respectively, to ensure the stability of the connection between the two couplers.

[0078] Because the knuckle structure of a BSI coupler differs significantly from that of other coupler types, uncoupling must be performed from the side of the coupler, and the uncoupling handle 150 occupies space on the side of the coupler. Therefore, when coupling with a BSI coupler, consideration must be given to how the concave tapered structure 240 of the transition coupler 200 cooperates with the uncoupling handle 150 to avoid coupling interference.

[0079] The shape of the concave cone cavity 241 of the transition coupler 200 matches the external shape of the convex cone 112 of the BSI coupler 100, thereby better adapting to the connection of the convex cone 112 of the BSI coupler 100. In this embodiment, the convex cone 112 of the BSI coupler 100 is formed into a substantially conical structure, and accordingly, the concave cone cavity 241 of the transition coupler 200 is also formed into a substantially conical structure.

[0080] A concave notch 214 is formed on the sidewall of the concave conical cavity 241 of the transition coupler 200, on the side away from the tongue block 232. This notch extends toward the coupler tail 220. Specifically, the notch 214 is formed on the side of the concave conical cavity 241 of the transition coupler 200 to accommodate the release handle 150 when the transition coupler 200 is coupled to the BSI coupler 100. During the coupling process, the release handle 150 is positioned within the notch 214, preventing interference between the concave conical cavity 241 and the release handle 150.

[0081] Another aspect of the present application is to provide a method for coupling the above-mentioned transition coupler. In summary, the method for coupling the transition coupler 200 and the BSI coupler 100 is as follows:

[0082] The tongue block 232 of the transition coupler 200 fits into the hook tongue 132 of the BSI coupler 100, and the transition coupler 200 and the BSI coupler 100 move closer to each other. The tongue block 232 of the transition coupler 200 and the hook tongue 132 of the BSI coupler 100 squeeze each other, causing the hook tongue 132 of the BSI coupler 100 to retract. The hook tongue 132 of the transition coupler 200 slides into the rear side of the hook tongue 132 of the BSI coupler 100, and the pressure applied to the hook tongue 132 of the BSI coupler 100 disappears, and the hook tongue 132 of the BSI coupler 100 extends, completing the coupling.

[0083] In some embodiments, the coupling method further includes the following steps: during the coupling of the transition coupler 200 and the BSI coupler 100, the inclined surface 2321 of the hook tongue block of the transition coupler 200 and the inclined surface 133 of the hook tongue of the BSI coupler 100 are fitted together; during the mutual squeezing of the hook tongue block 232 of the transition coupler 200 and the hook tongue 132 of the BSI coupler 100, the hook tongue block 232 of the transition coupler 200 is guided to the rear side of the hook tongue 132 of the BSI coupler 100 through the cooperation of the inclined surface 2321 of the hook tongue block and the inclined surface 133 of the hook tongue, thereby completing the coupling.

[0084] In some embodiments, the coupling method further includes the following steps: during the coupling of the transition coupler 200 and the BSI coupler 100 , each set of positioning structures cooperates to perform positioning.

[0085] Specifically, during the coupling process of the transition coupler 200 and the BSI coupler 100, the first auxiliary positioning block 251 of the transition coupler 200 cooperates with the first positioning boss 116 of the BSI coupler 100 for vertical positioning; the second auxiliary positioning block 252 of the transition coupler 200 cooperates with the second positioning boss 117 of the BSI coupler 100 for vertical positioning; the transition side surface 261 of the transition coupler 200 cooperates with the third positioning boss 118 for horizontal positioning; and the extension block 233 of the transition coupler 200 cooperates with the fourth positioning boss 1121 of the BSI coupler 100 for horizontal positioning.

[0086] The following further details the coupling and uncoupling principles of the transition coupler 200 and the BSI coupler 100, with respect to the coupling process outlined above:

[0087] Compared to the BSI coupler 100, the transition coupler 200 eliminates the need for a movable, stretchable tongue and instead features a fixed tongue for uncoupling. During coupling, the inclined tongue block 2321 of the fixed tongue block 232 of the transition coupler 200 presses against the inclined tongue block 133 of the BSI coupler 100. By compressing the spring 140 of the BSI coupler 100, the tongue block 232 of the transition coupler 200 guides the movement of the BSI coupler 100 until the tongues of the two hooks engage. After the tongue 132 of the BSI coupler 100 and the tongue block 232 of the transition coupler 200 engage, the spring 140 of the BSI coupler 100 returns to its original position, locking the two hooks. At this point, the transition coupler's connecting surface 211 aligns with the BSI coupler's connecting surface 111.

[0088] The transition coupler 200 and the BSI coupler 100 are locked in place, with the four sets of positioning structures on the transition coupler 200 and the BSI coupler 100 restrained. To uncouple the transition coupler 200, the uncoupling handle 150 on the BSI coupler 100 is operated to lift the coupler tongue lever 131, separating the coupler tongues. The two couplers are then slowly pulled back, separating the coupler positioning structures and the connecting surfaces, completing the uncoupling of the transition coupler 200.

[0089] The specific operation process of coupling and uncoupling is further described as follows:

[0090] During the coupling process, the transition coupler 200 approaches the BSI coupler 100, the convex cone 231 of the transition coupler and the concave cone 113 of the BSI coupler 100 guide each other, and the concave cone cavity 241 of the transition coupler 200 and the convex cone 112 of the BSI coupler 100 guide each other. The convex cone 231 of the transition coupler enters the concave cone 113 of the BSI coupler. Similarly, the convex cone 112 of the BSI coupler 100 enters the concave cone cavity 241 of the transition coupler 200, as shown in FIG4 a. As the two couplers continue to approach, the fixed hook tongue block 232 of the transition coupler 200 squeezes the hook tongue 132 of the BSI coupler 100, so that the hook tongue rod 131 of the BSI coupler 100 is pressed into the hook tongue accommodating cavity 114 in the convex cone 112 of the BSI coupler 100. When the connecting surface 211 of the transition coupler and the connecting surface 111 of the BSI coupler 100 are close to each other and are about to fit together, the fixed hook tongue block 232 of the transition coupler 200 slides into the BSI coupler. At the rear side of the hook tongue 132 of the transition coupler 200, the transition coupler connecting surface 211 and the BSI coupler connecting surface 111 are tightly fitted, and the hook tongue 132 of the BSI coupler 100 is no longer squeezed by the fixed hook tongue block 232 of the transition coupler 200 and pops out. At this time, the transition coupler 200 and the hook tongue of the BSI coupler 100 are connected, as shown in Figure 4b; in addition, under the limitation of the four sets of positioning structures, the transition coupler 200 and the BSI coupler 100 are connected in place.

[0091] Uncoupling Process: As shown in Figure 5a, by pulling the uncoupling handle 150 of the BSI coupler 100, the coupler tongue rod 131 of the BSI coupler 100 retracts into the coupler tongue accommodating cavity 114 within the convex cone 112 of the BSI coupler 100. At this point, the coupler tongues of the transition coupler 200 and the BSI coupler 100 disengage from each other and are no longer restrained, completing the uncoupling process. After the two couplers are uncoupled, the transition coupler 200 can be pulled backward to separate the BSI coupler 100, as shown in Figure 5b.

[0092] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A transition coupler for connecting with a train coupler, the train coupler comprising a train coupler head, the train coupler head being formed with a train coupler convex cone and a train coupler concave cone, the train coupler tongue being telescopically provided on the train coupler convex cone toward the train coupler concave cone; characterized in that: The transition coupler comprises: A transition coupler head and a transition coupler tail: wherein a transition coupler connecting surface is formed on one side of the transition coupler head connected to the train coupler, and a hook head body is formed between the transition coupler connecting surface and the transition coupler tail; A hook tongue structure is formed on the transition coupler connection surface for connecting with the hook tongue of the train coupler; the hook tongue structure includes a transition coupler convex cone formed on the transition coupler connection surface, and a hook tongue block is provided on the side of the transition coupler convex cone close to the concave cone structure; A concave cone structure is formed on the transition coupler connecting surface for accommodating the train coupler convex cone; the concave cone structure includes a concave cone cavity formed by the transition coupler connecting surface inside the hook head body.

2. The transition coupler according to claim 1, characterized in that: The hook tongue block is formed with an inclined surface of the hook tongue block, and the wider end of the inclined surface of the hook tongue block is close to the transition coupler connecting surface. The edge of the inclined surface of the hook tongue block close to the transition coupler connecting surface shrinks toward the side away from the concave cone structure to form the hook tongue of the transition coupler.

3. The transition coupler according to claim 1, characterized in that: The front side of the hook tongue block has a hook tongue block inclined surface, and the hook tongue block inclined surface is inclined from the front to the rear of the transition coupler away from the convex cone of the transition coupler. The back side of the hook tongue block inclined surface is connected to the side wall of the concave cone cavity to form the hook tongue of the transition coupler.

4. The transition coupler according to claim 2 or 3, characterized in that: The bottom of the train coupler concave cone extends forward of the train coupler hook head to form a plate-like structure, and a first positioning boss is provided on the upper surface of the plate-like structure; a first auxiliary positioning block is provided at the bottom of the transition coupler convex cone; when the transition coupler is connected to the train coupler, the first auxiliary positioning block of the transition coupler cooperates with the first positioning boss of the train coupler for positioning.

5. The transition coupler according to claim 2 or 3, characterized in that: A second positioning boss is provided at the bottom of the convex cone of the train coupler; a second auxiliary positioning block is provided on the inner surface of the bottom of the concave cone cavity of the transition coupler, and the second auxiliary positioning block protrudes into the concave cone cavity; when the transition coupler is connected to the train coupler, the convex cone of the train coupler extends into the concave cone cavity of the transition coupler, and the second auxiliary positioning block cooperates with the second positioning boss for positioning.

6. The transition coupler according to claim 2 or 3, characterized in that: The bottom of the train coupler concave cone extends forward of the train coupler hook head to form a plate-like structure, and a third positioning boss is formed on the side of the plate-like structure facing below the train coupler convex cone; the bottom surface of the concave cone cavity of the transition coupler extends farther below the transition coupler hook head relative to the bottom surface of the transition coupler convex cone, and a transition structure connecting the bottom surface of the concave cone cavity and the bottom surface of the transition coupler convex cone is formed between the concave cone structure and the hook tongue structure, and the side of the transition structure facing below the transition coupler convex cone is a transition side surface; when the transition coupler is connected to the train coupler, the transition side surface of the transition coupler cooperates with the third positioning boss of the train coupler for positioning.

7. The transition coupler according to claim 2 or 3, characterized in that: An extension block facing the concave cone structure is provided on the transition coupler convex cone. When the transition coupler is connected to the train coupler, the side surface of the extension block facing the concave cone structure cooperates with the side surface of the train coupler convex cone for positioning.

8. The transition coupler according to claim 1, characterized in that: The shape of the concave cone cavity of the transition coupler is adapted to the external shape of the convex cone of the train coupler.

9. The transition coupler according to claim 1 or 8, characterized in that: A concave notch extending toward the hook tail of the transition coupler is formed on the side wall of the concave conical cavity of the concave conical structure of the transition coupler away from the hook tongue block, and the deconstruction handle of the train coupler is accommodated in the concave notch when the transition coupler is connected to the train coupler.

10. A method for connecting a transition coupler, applied to the transition coupler according to any one of claims 1 to 9, characterized in that: The following steps are involved: The hook tongue block of the transition coupler fits with the hook tongue of the train coupler, and the transition coupler and the train coupler move close to each other. The hook tongue block of the transition coupler and the hook tongue of the train coupler squeeze each other so that the hook tongue of the train coupler retracts, and the hook tongue block of the transition coupler slides into the rear side of the hook tongue of the train coupler, and the pressure applied to the hook tongue of the train coupler disappears. The hook tongue of the train coupler extends out, limiting the hook tongue block of the transition coupler, and completing the connection.

11. The method for connecting a transition coupler according to claim 10, characterized in that: The train coupler's hook tongue comprises a hook tongue rod and a hook tongue provided at the end of the hook tongue rod, wherein a hook tongue inclined surface is formed on the side of the hook tongue facing the transition coupler, and the hook tongue is inclined in a direction away from the transition coupler; the front side of the hook tongue block comprises a hook tongue block inclined surface, and the hook tongue block inclined surface is inclined from the front of the transition coupler to the rear away from the transition coupler convex cone, and the inclinations of the hook tongue inclined surface and the hook tongue block inclined surface are complementary; The coupling method also includes the following steps: during the coupling process of the transition coupler and the train coupler, the inclined surface of the hook tongue block of the transition coupler and the inclined surface of the hook tongue of the train coupler are fitted together; during the mutual squeezing of the hook tongue block of the transition coupler and the hook tongue of the train coupler, the hook tongue block of the transition coupler is guided to the rear side of the hook tongue of the train coupler through the cooperation of the inclined surface of the hook tongue block and the inclined surface of the hook tongue, thereby completing the coupling.

12. The method for connecting a transition coupler according to claim 10, wherein: The bottom of the train coupler concave cone extends forward of the train coupler hook head to form a plate-like structure, a first positioning boss is provided on the upper surface of the plate-like structure, and a first auxiliary positioning block is provided at the bottom of the transition coupler convex cone; The coupling method also includes the following steps: during the coupling process between the transition coupler and the train coupler, the convex cone of the transition coupler extends into the interior of the concave cone of the train coupler, and the first auxiliary positioning block and the first positioning boss cooperate to position the train coupler and the transition coupler in the vertical direction.

13. The method for connecting a transition coupler according to claim 10, wherein: A second positioning boss is provided at the bottom of the convex cone of the train coupler; a second auxiliary positioning block is provided on the inner surface of the bottom of the concave cone cavity of the transition coupler, and the second auxiliary positioning block protrudes into the concave cone cavity; The coupling method also includes the following steps: during the coupling process between the transition coupler and the train coupler, the convex cone of the train coupler extends into the concave cone cavity of the transition coupler, and the second positioning boss and the second auxiliary positioning block cooperate to position the train coupler and the transition coupler in the vertical direction.

14. The method for connecting a transition coupler according to claim 10, wherein: The bottom of the train coupler concave cone extends forward of the train coupler hook head to form a plate-like structure, and a third positioning boss is formed on the side of the plate-like structure facing below the train coupler convex cone; the bottom surface of the concave cone cavity of the transition coupler extends farther below the transition coupler hook head relative to the bottom surface of the transition coupler convex cone, and a transition structure connecting the bottom surface of the concave cone cavity and the bottom surface of the transition coupler convex cone is formed between the concave cone structure and the coupler tongue structure, and the side of the transition structure facing below the convex cone is a transition side surface; The coupling method further includes the following steps: during the coupling process between the transition coupler and the train coupler, the transition side surface on the transition coupler cooperates with the third positioning boss on the train coupler to perform positioning in the horizontal direction.

15. The method for connecting a transition coupler according to claim 10, wherein: The transition coupler convex cone is provided with an extension block toward one side of the concave cone structure; The coupling method further includes the following steps: during the coupling process between the transition coupler and the train coupler, the side surface of the extension block facing the concave cone structure cooperates with the side surface of the convex cone of the train coupler to be positioned in the horizontal direction.

Images