Transition coupler and coupling method therefor

Abstract

A transition coupler (2) and a coupling method therefor. The transition coupler (2) comprises a coupler body (201), a second coupler knuckle (206) and a second coupling rod (208), wherein the coupler body (201) comprises a first coupling end (202) and a coupler tail end (203), the first coupling end (202) being configured to be coupled to a train coupler (1) and comprising a second coupling surface (204); the second coupler knuckle (206) is arranged on the coupler body (201), and is configured to be coupled to a first coupling rod (110) of the train coupler (1); the second coupling rod (208) is arranged on the coupler body (201); the second coupler knuckle (206) and the second coupling rod (208) are respectively arranged on two sides of the coupler body (201); the second coupling rod (208) is configured to have such a length that same can extend beyond the second coupling surface (204), so as to be coupled to a first coupler knuckle (108) of the train coupler (1); the first coupling end (202) comprises an upper coupling surface (228) and a lower coupling surface (229), which are vertically spaced apart, the upper coupling surface (228) being connected to the lower coupling surface (229) by means of a coupler body seat (230); and the coupler body seat (230) comprises an arc-shaped section (231), which is recessed from one side of the first coupling end (202) towards one side of the coupler tail end (203).

Description

Transition coupler and its connection method

[0001] This application claims priority to the patent applications filed with the Patent Office of China on July 24, 2024, with application number 2024109983971, titled “A transition coupler and its connection method”; filed with the Patent Office of China on July 24, 2024, with application number 2024109983990, titled “A transition coupler and its connection method”; and filed with the Patent Office of China on July 24, 2024, with application number 2024217625659, titled “A transition coupler”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of rail transit technology, and more particularly to a transition coupler and a method for coupling the same. Background Art

[0003] A transition coupler is a device used to connect couplers of different hook head types or installation heights and is a common component for locomotives and passenger cars. A transition coupler can be used as a rescue coupler; when a train breaks down during operation, a set of transition couplers that can reliably connect to existing official train couplers is needed for rescue and towing the train to a safe place. Existing transition couplers mainly include Type 10 transition couplers, Type 330 transition couplers, Type 40 transition couplers, etc. They have a large variety of parts and are heavy, making the connection operation very laborious. The existing technology also has universal transition couplers that can be adapted to connect to multiple types of train couplers. However, on the one hand, due to the fixed structure of universal transition couplers, it is difficult to use the fine differences between different types of couplers. On the other hand, due to the complex structure of transition couplers, they are usually large in size and heavy in weight, making it inconvenient to connect to the train couplers. For example, Chinese patent CN214929731U discloses a transition coupler structure comprising a hook head, which includes a convex cone portion, a concave hole portion, a hook tongue, and a coupling rod. The convex cone portion mates with the concave cone portion of the train coupler, and the concave hole portion mates with the convex cone portion of the train coupler. Chinese patents CN203558079U and CN215244872U also disclose similar structures. These transition couplers are complex in structure, have numerous hook body components, and are heavy, making coupling and hooking operations inconvenient.

[0004] Summary of the Invention

[0005] In order to solve some problems existing in the prior art, the present application provides a transition coupler and a method for connecting the same; the specific solution is described as follows:

[0006] A transition coupler, comprising:

[0007] Hook body: including a first connecting end and a hook tail end; the first connecting end is used to connect with the train coupler and includes a second connecting surface;

[0008] Second hook tongue: provided on the hook body, used to connect with the first connecting rod of the train coupler; and

[0009] Second connecting rod: set on the hook body;

[0010] The second hook tongue and the second connecting rod are respectively arranged on both sides of the hook body; the length of the second connecting rod is configured to be able to cross the second connecting surface to be connected with the first hook tongue of the train coupler;

[0011] The first connecting end includes an upper connecting surface and a lower connecting surface spaced apart from each other, and the upper connecting surface and the lower connecting surface are connected via a hook body seat; the hook body seat includes an arc section recessed from one side of the first connecting end to the side of the hook tail end.

[0012] More specifically:

[0013] The first aspect of the present application provides a transition coupler, which includes:

[0014] Hook body: including a first connecting end and a hook tail end; the first connecting end is used to connect with the train coupler and includes a second connecting surface; the hook tail end can be connected to the traction mechanism;

[0015] Second hook tongue: provided on the hook body, used for connecting with the first connecting rod of the train coupler;

[0016] A first mounting platform is provided on the hook body and is located between the first connecting end and the hook tail end of the hook body; and

[0017] Second connecting rod: detachably mounted on the first mounting platform;

[0018] The second hook tongue and the second connecting rod are arranged on both sides of the hook body; the length of the second connecting rod is configured so that when it is installed on the first mounting platform, it can pass over the second connecting surface to be connected with the first hook tongue of the train coupler;

[0019] The first connecting end includes an upper connecting surface and a lower connecting surface spaced apart from each other, and the upper connecting surface and the lower connecting surface are connected via a hook body seat; the hook body seat includes an arc section recessed from one side of the first connecting end to the side of the hook tail end.

[0020] In one embodiment, the second hook tongue is fixedly arranged on the hook body and cannot rotate.

[0021] In one embodiment, a second mounting platform is further provided on the hook body, and the second mounting platform is located on the same side of the first mounting platform, and is arranged relative to the first mounting platform in a direction close to the first connecting end of the hook body; the transition coupler further includes a connecting rod stopper, and the stopper is detachably mounted on the second mounting platform; after the second connecting rod is installed on the first mounting platform and the stopper is installed on the second mounting platform, the stopper is located on the outside of the second connecting rod.

[0022] In one embodiment, the second connecting rod includes a mounting end and a second connecting end; the mounting end forms an insertion slot and is inserted into the first mounting platform; the second connecting rod and the first mounting platform are fixed via a fixing member; the second connecting end forms a connecting opening, and the first hook tongue of the train coupler can be hooked at the connecting opening.

[0023] In one embodiment, the second mounting platform includes a third mounting platform and a fourth mounting platform spaced apart in an upper and lower direction, and the third mounting platform and the fourth mounting platform are provided with sockets opposite to each other, and the blocking rod is inserted and installed between the sockets of the third mounting platform and the fourth mounting platform; in the longitudinal direction, the first mounting platform is located between the third mounting platform and the fourth mounting platform.

[0024] In one embodiment, a reinforcing rib is provided between the arc segment and the hook tail end.

[0025] In one embodiment, the arc segment is a concave hollow structure, forming a concave groove body with an opening toward the first connecting end, and the upper connecting surface and the lower connecting surface spaced apart from each other are relatively located at two ends of the arc segment.

[0026] In one embodiment, notches are formed on both the upper connecting surface and the lower connecting surface. When the transition coupler is connected to the train coupler, the notches are aligned with the air duct connector position of the first connecting surface of the train coupler.

[0027] In one embodiment, the first mounting platform is arranged on the hook body seat at the rear side of the arc segment, and the second hook tongue is arranged along the first edge of the arc segment.

[0028] In one embodiment, the third mounting platform and the fourth mounting platform are arranged along a second edge of the arc segment, and the second edge is arranged opposite to the first edge.

[0029] A second aspect of the present application provides a method for coupling a transition coupler, using the transition coupler described in any of the above embodiments, the coupling method comprising the following steps:

[0030] The first connecting end of the transition coupler is brought into contact with the first connecting surface of the train coupler;

[0031] Move the transition coupler so that the second coupler tongue of the transition coupler is connected to the first coupling rod of the train coupler;

[0032] The first connecting end of the rotary transition coupler is completely in contact with the first connecting surface of the train coupler;

[0033] Connect the second connecting rod of the transition coupler to the first coupler tongue of the train coupler;

[0034] The second connecting rod of the rotating transition coupler is fixed on the first mounting platform.

[0035] In one embodiment, the coupling method further includes the following steps: after fixing the second coupling rod of the transition coupler to the first mounting platform, installing the blocking rod.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] (1) The transition coupler provided in at least one embodiment of the present application is designed with all parts as a detachable structure, which simplifies the structure of the hook head. The coupler has a compact structure, is simple and reliable to operate, is light in weight, and is easy to carry. It can be connected to the train coupler through manual operation, meeting the needs of high-speed train rescue and rescue, and can reduce the difficulty and cost of rescue. (2) The transition coupler provided in at least one embodiment of the present application has a hook body of an arc-shaped structure, and can be designed as a plate-shaped structure, which greatly simplifies the structural structure of the transition coupler hook body, reduces the weight of the transition coupler, facilitates the connection operation, and thus can ensure the connection operation time. (3) The transition coupler provided in at least one embodiment of the present application has a connection rod designed as a detachable structure, and the transition coupler adopts a rotary connection method, which is easy to operate and highly flexible. The design of the connection lever ensures the stability of the connection between the transition coupler and the train coupler.

[0038] The transition coupler provided in the third aspect of the present application, more specifically, includes:

[0039] Hook body: including a first connecting end and a hook tail end, wherein the first connecting end is used to connect with the train coupler and includes a second connecting surface;

[0040] Second hook tongue: provided on the hook body, used to connect with the first connecting rod of the train coupler; and

[0041] The second connecting rod: an integrated structure with the hook body;

[0042] The second hook tongue and the second connecting rod are arranged on both sides of the hook body; the length of the second connecting rod is configured to be able to cross the second connecting surface to connect with the first hook tongue of the train coupler;

[0043] The first connecting end includes an upper connecting surface and a lower connecting surface spaced apart from each other, and the upper connecting surface and the lower connecting surface are connected via a hook body seat; the hook body seat includes an arc section recessed from one side of the first connecting end to the side of the hook tail end.

[0044] In one embodiment, the second hook tongue is fixedly arranged on the hook body and cannot rotate.

[0045] In one embodiment, a stop pin is installed on the hook body on one side of the second hook tongue, and the installation position of the stop pin is configured as follows: after the first connecting rod of the train coupler is connected with the second hook tongue of the transition coupler, the stop pin is located on the outside of the first connecting rod of the train coupler to limit the rotation of the first connecting rod.

[0046] In one embodiment, a stop pin mounting plate is installed on the hook body on one side of the second hook tongue, including an upper mounting plate located above the second hook tongue and a lower mounting plate located below the second hook tongue, and openings are provided on the upper mounting plate and the lower mounting plate, and the stop pin passes through the openings of the upper mounting plate and the lower mounting plate and is fixed.

[0047] In one embodiment, a connecting plate is provided on the hook body, and the second hook tongue is formed on a side of the connecting plate facing the hook tail end.

[0048] In one embodiment, the side of the connecting plate facing the second connecting surface is an inclined surface, and the inclined surface is located from the side of the second connecting rod close to the transition coupler to the outside of the transition coupler, and is inclined toward the side close to the hook tail end.

[0049] In one embodiment, the arcuate section of the hook body is in the shape of an arcuate plate, and the hook tail end and the arcuate section are integrally formed. More specifically, the arcuate section is a hollow structure with an inward concave shape, forming a concave groove with an opening toward the first connecting end, and the upper and lower connecting surfaces are spaced apart and located opposite each other at the ends of the arcuate section.

[0050] In one embodiment, the stop pin is mounted on the side wall of the arc segment, and the upper mounting plate and the lower mounting plate are symmetrically mounted on the upper and lower sides of the symmetry axis along the symmetry axis of the arc segment.

[0051] Among them, some technical solutions of the transition couplers provided by the first aspect and the third aspect can be reasonably borrowed from each other, so they will not be described in detail.

[0052] A fourth aspect of the present application provides a method for coupling a transition coupler, which is used to couple a transition coupler to a train coupler, comprising the following steps:

[0053] Pull the uncoupling handle of the train coupler to rotate the first coupler tongue of the train coupler so that the first coupler tongue of the train coupler is connected to the second connecting rod of the transition coupler;

[0054] Release the uncoupling handle of the train coupler to connect the first connecting rod of the train coupler with the second coupling tongue of the transition coupler.

[0055] In one embodiment, the coupling method further includes: during the coupling process of the first coupling rod of the train coupler and the second coupling tongue of the transition coupler, the first coupling rod of the train coupler contacts the inclined surface of the coupling plate, moves along the inclined surface to the rear side of the coupling plate, and is coupled with the second coupling tongue of the transition coupler.

[0056] Compared with the prior art, the present invention has the following advantages:

[0057] (1) The transition coupler provided in at least one embodiment of the present application is an integrated structure, in which the traditional transition coupler main shaft, connecting rod, connecting rod pin, etc. are designed as one or omitted. Only two parts, the integrated coupler and the stop pin, can realize the connection function of the transition coupler, which simplifies the structure of the transition coupler and meets the lightweight requirements. (2) The transition coupler hook body provided in at least one embodiment of the present application is an arc-shaped structure and can be designed as a plate-shaped structure, which greatly simplifies the structure of the transition coupler hook body, reduces the weight of the transition coupler, facilitates the connecting operation, and thus can ensure the connecting operation time. (3) The connecting rod and the coupler body of the transition coupler provided in at least one embodiment of the present application are welded together, without relative movement, non-detachable, simple in structure, and do not require daily maintenance and oiling. (4) The stop pin of the transition coupler provided in at least one embodiment of the present application is used to block the formal coupler connecting rod, which can effectively prevent it from coming out and avoid uncoupling. (5) The transition coupler provided in at least one embodiment of the present application adopts a sliding connecting method, which is simple to operate and can be connected and uncoupled by one person. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] 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.

[0059] FIG1 is a schematic structural diagram of a hook body of a transition coupler according to an embodiment;

[0060] Figure 2 is a schematic structural diagram of a transition coupler;

[0061] Figure 3 is a schematic structural diagram of the first connecting surface alignment state of the transition coupler and the 330 type coupler;

[0062] Figure 4 is a cross-sectional view of the transition coupler and the 330 type coupler in alignment with the first connection surface;

[0063] FIG5 is a schematic diagram showing the process of connecting the second connecting rod of the transition coupler to the first coupler tongue of the 330 type coupler;

[0064] Figure 6 is a schematic diagram showing the second coupling rod of the transition coupler and the first coupling tongue of the 330 type coupler in a state of being fully coupled;

[0065] Figure 7 is a schematic diagram of the structure of the transition coupler and the 330 type coupler in the connected state;

[0066] Figure 8a is a schematic structural diagram of a Type 40 coupler in the first state;

[0067] Figure 8b is a schematic diagram of the structure of the Type 40 coupler in the second state;

[0068] FIG9 is a schematic structural diagram of a transition coupler according to another embodiment from a first perspective;

[0069] Figure 10 is a schematic structural diagram of the transition coupler from a second perspective;

[0070] Figure 11 is a schematic structural diagram of the transition coupler from the third perspective;

[0071] Figure 12a is a schematic structural diagram of the first state of the transition coupler and the 40-type coupler;

[0072] Figure 12b is a schematic diagram of the structure of the transition coupler and the 40-type coupler in the second state;

[0073] Figure 12c is a schematic diagram of the structure of the transition coupler and the 40-type coupler in the third state;

[0074] Figure 12d is a schematic diagram of the structure of the transition coupler and the 40-type coupler in the fourth state;

[0075] Figure 13 is a structural diagram of the transition coupler and the Type 40 coupler in the connected state.

[0076] Among them, 1 is a train coupler, 101 is the first hook head, 102 is the first hook tail, 103 is the first connecting surface, 104 is a convex cone, 105 is a concave cone, 106 is the hook head cavity, 107 is the hook tongue plate, 108 is the first hook tongue, 110 is the first connecting rod, 111 is the air duct connector position, and 112 is the unhooking handle.

[0077] 2 Transition coupler, 201 hook body, 202 first connecting end, 203 hook tail end, 204 second connecting surface, 205 hook tail pin, 206 second hook tongue, 207 arc mouth, 208 second connecting rod, 209 first mounting platform, 210 first through hole, 211 both sides of hook body 1, 212 second through hole, 213 first rotating pin, 214 rotating pin spring clip, 215 mounting end, 216 second connecting end, 217 insertion slot, 218 connecting mouth, 219 third connecting rod, 220 fourth connecting rod, 221 fifth connecting rod, 222 gap, 223 second mounting platform, 224 stop rod, 225 third mounting platform, 226 fourth mounting platform, 227 socket, 228 upper connecting surface, 229 lower connecting surface, 230 hook body seat, 231 arc segment, 232 plate structure, 233 reinforcing rib, 234 notch, 235 first edge, 236 second edge, 237 concave groove, 238 stop pin, 239 stop pin mounting plate, 240 upper mounting plate, 241 lower mounting plate, 242 opening, 243 connecting plate, 244 inclined surface, X-symmetry axis. DETAILED DESCRIPTION

[0078] The technical solution of the present application is described in detail below in conjunction with specific embodiments. However, it should be understood that without further description, the elements, structures and features in one embodiment may also be beneficially combined with other embodiments.

[0079] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features.

[0080] In the description of this application, it should be understood that the terms "upper", "lower", "bottom", "inner", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in FIG1 , and are only for the convenience of describing this application 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 should not be understood as a limitation on this application.

[0081] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0082] As shown in Figures 1-7, the first embodiment of the present application provides a transition coupler 2, which can be used as a rescue coupler and is used to connect with a train coupler 1 (also called a formal coupler) during vehicle rescue operations. The transition coupler 2 is generally connected between a rescue vehicle (having a traction mechanism capable of providing power) and a vehicle to be rescued, and the coupler of the vehicle to be rescued is the train coupler 1. The transition coupler 2 is suitable for connection with a train coupler 1 in the form of a coupler tongue and a coupling rod, for example, a 330-type coupler. In this embodiment, the adaptation application of the transition coupler to the 330-type coupler will be taken as an example to explain the structure of the transition coupler and the connection steps. The terms involved in this embodiment: formal coupler, train coupler all refer to the couplers on the formal vehicle. When the formal vehicle needs to be rescued, it is also called a vehicle to be rescued.

[0083] In order to facilitate understanding of the technical solution of the present application, first, the structure of the 330 type coupler as a train coupler 1 is briefly explained. Referring to Figures 3 and 4, the 330 type coupler (train coupler 1) includes a first hook head 101 and a first hook tail 102, wherein the first hook tail 102 side is used to connect to the vehicle end (formal vehicle). A first connecting surface 103 is formed at the end of the first hook head 101. When two 330 type couplers are connected to each other, the first connecting surfaces 103 are opposite. A convex cone 104 and a concave cone 105 are provided on one side of the first connecting surface 103 of the 330 type coupler. A hook head cavity 106 is formed at the first hook head, and a hook tongue plate 107 is installed inside the hook head cavity 106. It can rotate relative to the first hook head 101 and can also be connected to an external unhooking handle 112. Pulling the unhooking handle 112 causes the hook tongue plate 107 of the 330 type coupler to rotate. More specifically, an arcuate structure is formed on one side of the coupler tongue plate 107, serving as the first coupler tongue 108, capable of coupling with the coupling rod of another mating coupler (e.g., a transition coupler). The other side of the coupler tongue plate 107 is connected to the first coupling rod 110 of a 330-type coupler, capable of coupling with the coupler tongue of another mating coupler. As described in the background section, the 330-type coupler is a conventional train coupler, and the above description provides only a brief introduction.

[0084] The train coupler 1 used in this embodiment is a 330-type coupler. Therefore, the 330-type coupler in this embodiment corresponds to the train coupler 1. However, this does not limit the application scenarios of the transition coupler of this application. The transition coupler can still be applied to other types of train couplers with a coupler tongue and a hook rod.

[0085] Hereinafter, the structure of the transition coupler 2 of this embodiment will be described in detail.

[0086] Referring to Figures 1 and 2 , the hook body 201 of the transition coupler 2 includes a first coupling end 202 and a tail end 203, which are positioned opposite each other. The first coupling end 202 is used to couple with a matching coupler (e.g., a train coupler) and has a second coupling surface 204. The tail end 203 is used to connect to an external rescue vehicle (not shown) and includes a tail pin 205. When coupled with the coupler of a rescue vehicle (e.g., a train coupler), the second coupling surface 204 of the transition coupler mates with the first coupling surface 103 of the 330-type coupler of the rescue vehicle.

[0087] Typically, couplers are coupled via a coupler tongue and a coupling rod. For coupled couplers, the coupler tongue of a first coupler is coupled to the coupling rod of a second coupler, and the coupling rod of the first coupler is coupled to the coupler tongue of the second coupler.

[0088] The transition coupler's hook body 201 is equipped with a second hook tongue 206. This second hook tongue 206 is positioned on the hook body 201, with its curved opening 207 facing the hook tail end 203. It is designed to connect with the first coupling rod 110 of the train coupler 1 (Type 330 coupler). As shown in Figures 1, 2, 4, and 5, the second hook tongue 206 is fixed to the hook body 201 and cannot rotate. In some embodiments, it can be integrally cast with the hook body 201. Conventional hook tongues are located on the hook tongue plate and connected to a spring, allowing for rotation. Therefore, the second hook tongue structure of this embodiment is simpler and more reliable.

[0089] As shown in Figures 2 and 6 , the transition coupler 2 also features a second connecting rod 208. Unlike the structures of conventional transition couplers, this embodiment utilizes a pluggable structure. A connecting rod mounting platform, or first mounting platform 209, is provided on the hook body 201. This platform is located on the sidewall of the hook body 201, midway between the first connecting end 202 and the hook tail end 203. Specifically, the first mounting platform 209 is a plate-like structure mounted on the sidewall of the hook body 201. It is provided with a first through-hole 210 for receiving a fixing member (such as the first rotation pin 213 described below).

[0090] The second connecting rod 208 is removably mounted on the first mounting platform 209. The second coupling tongue 206 and the second connecting rod 208 are arranged on opposite sides 211 of the hook body 201 (see Figure 4). The second connecting rod 208 has a second through-hole 212. When the second connecting rod 208 is to be secured to the first mounting platform 209, the first through-hole 210 and the second through-hole 212 are aligned, and a connecting rod pivot pin, i.e., a first pivot pin 213, is inserted. One end of the first pivot pin 213 is larger than the second through-hole, and the other end, after passing through the second through-hole 212, is secured with a pivot pin spring clip 214 to prevent the second connecting rod 208 from being dislodged. The length of the second connecting rod 208 is configured so that, when mounted on the first mounting platform 209, it can pass over the second coupling surface 204 of the transition coupler and stably couple with the first coupling tongue 108 of the train coupler (Type 330 coupler). The first rotating pin 213 selected as the fixing member in this embodiment can of course also be other structures, such as a detachable structure such as a support, a rod, etc.

[0091] In the initial state, the second connecting rod 208 and the hook body 201 of the transition coupler 2 are two independent components and are not assembled. During the coupling operation, the second connecting rod 208 is coupled to the first coupler tongue 108 of the 330 type coupler, and then the second connecting rod 208 is fixed to the first mounting platform 209.

[0092] In some embodiments, the second connecting rod 208 is axially connected to the first mounting platform 209, and can rotate relative to the axial connection portion with the first mounting platform 209 in the direction between the first connecting end 202 and the hook tail end 203; and is connected to the first coupler tongue 108 of the 330 type coupler during the rotation process.

[0093] In one specific embodiment, as shown in FIG2 , the second connecting rod 208 includes a mounting end 215 and a second connecting end 216. The mounting end 215 defines a mounting slot 217 that is inserted into the first mounting platform 209. The second connecting rod 208 and the first mounting platform 209 are secured via a first pivot pin 213. The second connecting end 216 defines a coupling opening 218, into which the first coupler tongue 108 of the train coupler (Type 330 coupler) can be coupled. More specifically, the second connecting rod 208 includes a third connecting rod 219 and a fourth connecting rod 220, which are arranged longitudinally and are substantially parallel and of equal length. The two connecting rods 219 and 220 are connected by a fifth connecting rod 221, which extends widthwise, forming the coupling opening 218. A second through hole 212 is provided at the non-connecting end of each of the third and fourth connecting rods 219 and 220. The gap 222 between the third connecting rod 219 and the fourth connecting rod 220 is designed according to the thickness of the first mounting platform 209 so that the first mounting platform 209 can be accommodated in the gap 222 between the two connecting rods.

[0094] Because the second connecting rod 208 and the hook body 201 are designed to be detachable, there is a risk that the second connecting rod 208 will fall off the first mounting platform 209. There is also a risk that the second connecting rod 208 will rotate relative to the first mounting platform 209, causing the connection to become uncoupled. To address this issue, as shown in Figures 1 and 2, the hook body 201 is further provided with a connecting rod stopper mounting platform, namely, a second mounting platform 223. The second mounting platform 223 is located on the same side of the first mounting platform 209 and is positioned relative to the first mounting platform 209 toward the first connecting end 202 of the hook body. The transition coupler 2 further includes a connecting rod stopper 224, which is detachably mounted on the second mounting platform 223. After the second connecting rod 208 is mounted on the first mounting platform 209 and the stopper 224 is mounted on the second mounting platform 223, the stopper 224 is positioned outside the second connecting rod 208 to limit its movement (see Figures 2 and 7).

[0095] More specifically, the second mounting platform 223 is mounted on the outer wall of the hook body 1 and includes a third mounting platform 225 and a fourth mounting platform 226 spaced apart from each other. Optical holes 227 are positioned opposite each other on the third and fourth mounting platforms 225, 226, and the retaining rod 224 is inserted between the optical holes 227 of the third and fourth mounting platforms 225, 226. In the longitudinal direction, the first mounting platform 209 is located between the third and fourth mounting platforms 225, 226. When the transition coupler is coupled to the 330-type coupler, the retaining rod 224 is mounted in the optical hole 227, ensuring that the second coupling rod 208 is stabilized in the first coupler tongue 108 of the 330-type coupler.

[0096] Similar to the structure of the first mounting platform 209, the third mounting platform 225 and the fourth mounting platform 226 of the second mounting platform are also plate-shaped structures, and the position of the socket 227 is located on the outside of the first through hole 210, so that the blocking rod 224 is installed on the outside of the second connecting rod 208 after being installed on the second mounting platform 223.

[0097] As previously mentioned, the 330-type coupler has a convex cone 104 and a concave cone 105. To complement these, the second connecting surface of the conventional transition coupler also has a concave cone and a convex cone, resulting in a larger overall area of ​​the second connecting surface and a larger overall volume and weight for the transition coupler. To address this issue, as shown in Figures 1 and 2, the first connecting end 202 of the hook body in this embodiment includes an upper connecting surface 228 and a lower connecting surface 229 spaced apart from each other (i.e., the second connecting surface 204 is divided into an upper connecting surface 228 and a lower connecting surface 229 spaced apart from each other); the upper connecting surface 228 and the lower connecting surface 229 are connected via a hook body seat 230. The hook body seat 230 has an inwardly concave arcuate segment 231 on the side facing the first connecting end 202, i.e., the arcuate segment 231 is considered part of the hook body seat 230. The inward concavity mentioned here refers to the concavity of the hook body seat 230 from the first connecting end 202 toward the side near the hook tail end 203. The hook tail end 203 and the plate-shaped structure 232 of the arc-shaped segment 231 may be an integrally formed structure.

[0098] More specifically, as shown in FIG1 , the arcuate segment 231 is a hollow structure with an inward concave shape, forming a concave groove 237 with an opening toward the first connecting end 202. Upper connecting surfaces 228 and lower connecting surfaces 229 are spaced apart from each other and are located oppositely at the upper and lower ends of the arcuate segment 231. The opening of the concave groove 237 only has the upper connecting surface 228 and the lower connecting surface 229.

[0099] In one embodiment, the transverse length of the arcuate segment 231 accounts for no less than 30% of the transverse length of the hook body 201, and may be, for example, 35%, 40%, etc. The transverse length of the arcuate segment 231 accounts for no less than 50% of the transverse length of the hook body seat 230, and may be, for example, 50%, 52%, 54%, 55%, 58%, 60%, etc. The transverse direction is represented as the left-right direction in Figures 1 and 2 . This arrangement maximizes the proportion of the concave groove while ensuring the strength of the transition coupler, thereby reducing the weight of the transition coupler.

[0100] The overall height of the second connecting surface 204 (i.e., the sum of the heights of the upper and lower connecting surfaces) does not exceed 30% of the overall height of the hook body 201, for example, 25%, 20%, etc. The width of the second connecting surface 204 (in the front-to-back direction in FIG. 1 ) does not exceed 50% of the width of the first connecting surface 103 of the train coupler 1, for example, 45%, 40%, 35%, 30%, etc. These configurations can further reduce the size and weight of the transition coupler.

[0101] The width of the curved segment 231 is approximately equal to the width of the upper and lower connecting surfaces 228 and 229, which is much smaller than the overall width of the first connecting surface 103 of the 330-type coupler. This reduces the overall weight of the transition coupler and prevents interference with the convex cone 104 of the train coupler. The hook body 201, located behind the curved segment 231 and near the hook tail end 203, features a plate-shaped hook seat 230, which serves as a reinforcing rib 233 to enhance the overall stability of the transition coupler. The rib 233 is narrower than the width of the upper and lower connecting surfaces 228 and 229. During coupling, the upper and lower connecting surfaces 228 and 229 align with the first connecting surface 103 of the 330-type coupler. The concave groove of the curved segment 231 is close to the convex cone 104 of the 330-type coupler, but does not interfere with it. This structure minimizes the overall volume and weight of the transition coupler. In order to reduce weight, a plurality of weight-reducing holes may be designed on the arc section 231 of the hook body.

[0102] In some embodiments of the present application, there is a notch 234 in the middle part of the upper connecting surface 228 and the lower connecting surface 229. The notch 234 matches the air duct connector position 111 of the 330 type coupler to avoid interference between the air duct connector of the transition coupler and the train coupler during the coupling process.

[0103] In some embodiments of the present application, the first mounting platform 209 is disposed on the hook body seat 230 at the rear side of the arcuate segment 231, that is, on the plate-like structure of the hook body seat 230; the second hook tongue 206 is disposed along the first edge 235 of the arcuate segment 231; and the third mounting platform 225 and the fourth mounting platform 226 are disposed along the second edge 236 of the arcuate segment 231. The first edge 235 and the second edge 236 are located on opposite sides of the arcuate segment 231, and the second hook tongue 206 and the second mounting platform 223 are disposed substantially opposite to each other relative to the arcuate segment 231, as shown in FIG1 .

[0104] The arc section 231 is integrally formed with a concave notch 237 on one side facing the 330-type coupler, so that when the second connecting rod 208 of the rotary transition coupler is connected to the 330-type coupler, interference with the 330-type coupler can be avoided.

[0105] This application greatly simplifies the structure of the transition coupler, and in particular proposes a detachable transition coupler. This transition coupler can meet the requirements of urban rail trains. By converting the multi-part structure of the coupling assembly, including the coupler tongue, coupling rod, and coupling rod pin, into a single-part structure, the transition coupler is lightweight and can be connected to the train coupler manually, thus meeting the requirements of train rescue.

[0106] A second embodiment of the present application provides a method for connecting a transition coupler for a 330 type coupler, using the transition coupler described in the first embodiment, and the connecting method includes the following steps.

[0107] The first connecting end 202 of the transition coupler is brought into contact with the first connecting surface 103 of the 330-type coupler. In the initial contact state, the connecting surfaces of the two couplers are not completely in contact, but the side where the second coupler tongue 206 of the transition coupler is in contact with the first connecting surface 103 of the 330-type coupler, and the transition coupler is in an inclined state relative to the 330-type coupler.

[0108] Move the transition coupler so that the second coupler tongue 206 of the transition coupler is connected to the first connecting rod 110 of the 330 type coupler;

[0109] The first connecting end 202 of the rotary transition coupler is completely in contact with the first connecting surface 103 of the 330 type coupler;

[0110] Connect the second connecting rod 208 of the transition coupler to the first coupler tongue 108 of the 330 type coupler;

[0111] The second connecting rod 208 of the transition coupler is rotated to fix the second connecting rod 208 on the first mounting platform 209.

[0112] In some embodiments, the coupling method further includes the following steps: after fixing the second coupling rod 208 of the transition coupler to the first mounting platform 209 , installing the blocking rod 224 .

[0113] Further combined with the specific structure of the transition coupler, the specific connection method using the transition coupler is explained as follows.

[0114] Coupling process: The transition coupler 2 is manually operated to couple with the 330-type coupler, as shown in Figure 3. The upper and lower coupling surfaces 228 and 229 of the transition coupler 2 contact the first coupling surface 103 of the 330-type coupler. Simultaneously, the transition coupler 2 is moved horizontally, causing its fixed second coupler tongue 206 to slide into the stopper at the end of the first coupling rod 110 of the 330-type coupler, as shown in Figure 4. The hook body 201 of the transition coupler is rotated clockwise and continued to move toward the convex cone 104 of the 330-type coupler. The stopper at the end of the first coupling rod 110 of the 330-type coupler fully enters the curved opening 207 of the second coupler tongue 206 of the transition coupler (Figure 5). The hook body 2 of the transition coupler is then rotated counterclockwise to re-engage the first coupling surface 103 of the 330-type coupler, completing the coupling of the second coupler tongue 206 of the transition coupler. Subsequently, the detachable second connecting rod 208 of the transition coupler 2 is manually operated. The cylindrical end (second connecting end 216) of the detachable second connecting rod 208 is hooked into the groove of the first coupler tongue 108 of the 330-type coupler. The other end (mounting end 215) is hinged to the first mounting platform 209 on the coupler body via the first rotating pin 213. The rotating pin spring clip 214 is inserted into the positioning hole of the first rotating pin 213 to prevent it from falling out, as shown in Figure 6. Subsequently, the stopper 224 is manually inserted into the third and fourth mounting platforms 225 and 226 to limit the detachable second connecting rod 208 and prevent it from rotating. The spring clip is also inserted into the stopper 224 to prevent it from falling out. At this point, the transition coupler 2 is connected to the 330-type coupler. See Figure 7.

[0115] Uncoupling Process: The uncoupling process for the transition coupler 2 and the 330 coupler is the reverse of the coupling process. First, remove the spring clip from the stop bar 224, then remove the stop bar 224 from the third and fourth mounting platforms. Finally, remove the turn pin spring clip 214 from the hook body 201. This allows the second coupling bar 208 to be removed from the groove of the first coupler tongue 108 of the 330 coupler. Then, rotate the transition coupler 2 clockwise and move it horizontally, allowing the fixed second coupler tongue 206 of the transition coupler to slide out of the stop post at the end of the first coupling bar 110 of the 330 coupler. This completes the uncoupling process between the transition coupler 2 and the 330 coupler.

[0116] As shown in Figures 8-13, this application also provides another transition coupler and method for connecting a transition coupler, suitable for connection to a train coupler in the form of a coupler tongue and connecting rod, such as a Type 40 coupler. In the following embodiments, the structure of the transition coupler and the connection steps will be explained using the adaptation application of the transition coupler to the Type 40 coupler as an example. Similarly, the terms "regular coupler" and "train coupler" refer to the coupler on the regular vehicle, which is also referred to as the vehicle to be rescued when it needs to be rescued.

[0117] The current state of application of Type 40 couplers in existing technology is as follows: Tram-trains are a type of mixed-use transportation vehicle used abroad. These vehicles do not require high strength for their transition couplers, but they have particularly stringent requirements for lightweight design. Type 40 couplers are widely used. Type 40 couplers are required for tram rescues, but traditional couplers are too heavy and cannot be operated by a single person. Furthermore, they have the disadvantage of complex operation procedures. Unlike the Type 330 couplers commonly used on Chinese subway vehicles, Type 40 couplers differ in their principles and structural features. When the coupler is in the ready-to-connect position (also known as the connection position), the first coupling rod of the Type 40 coupler extends out of the convex cone, while the first coupling rod of the Type 330 coupler retracts within the convex cone. The arc of the first coupler tongue of the Type 40 coupler faces the rear side of the hook body, and a guide plate is installed on the side wall of the hook body. The arc of the first coupler tongue of the Type 330 coupler faces the side of the hook body. As described in the background art, the Type 40 coupler is also a train coupler in the prior art.

[0118] In order to facilitate understanding of the technical solution of the present application, first, the structure of the Type 40 coupler is briefly explained. Figures 8a and 8b are two state diagrams of the Type 40 coupler. The Type 40 coupler includes a first hook head 101 and a first hook tail 102, wherein the first hook tail 102 side is used to connect to the vehicle end (formal vehicle). A first connecting surface 103 is formed at the end of the first hook head 101. When two Type 40 couplers are connected, the first connecting surfaces 103 are opposite. A convex cone 104 and a concave cone 105 are provided on one side of the first connecting surface 103 of the Type 40 coupler (refer to Figure 13). A hook head cavity 106 is formed at the first hook head 101, and a hook tongue plate 107 is installed inside the hook head cavity 106. The hook tongue plate 107 can rotate relative to the first hook head 101, and can also be connected to an external unhooking handle 112. When the unhooking handle 112 is pulled, the hook tongue plate 107 of the Type 40 coupler rotates. More specifically, an arc-shaped structure is formed on one side of the coupler tongue plate 107, serving as the first coupler tongue 108, capable of coupling with the coupling rod of another mating coupler (e.g., a transition coupler). The other side of the coupler tongue plate 107 is connected to the first coupling rod 110 of a Type 40 coupler, capable of coupling with the coupler tongue of another mating coupler. Figure 8a shows the train coupler 1 in the uncoupled state, while Figure 8b shows the train coupler 1 in the coupled state.

[0119] The third embodiment of the present application provides a transition coupler for a Type 40 coupler, which is used in vehicle rescue operations and can be coupled to a vehicle to be rescued that uses a Type 40 coupler. However, the transition coupler of the present application is not limited to coupling with a Type 40 coupler and can also be used with other types of train couplers.

[0120] Hereinafter, the structure of the transition coupler 2 of this embodiment will be described in detail.

[0121] As shown in Figures 9-11, the hook body 201 of the transition coupler 2 includes a first connecting end 202 and a hook tail end 203, which are arranged opposite each other. The first connecting end 202 is used to connect to a matching coupler (such as a train coupler) and has a second connecting surface 204. The hook tail end 203 is used to connect to an external rescue vehicle (not shown) and includes a hook tail pin 205. When connected to the coupler of the vehicle to be rescued (such as a train coupler), the second connecting surface 204 of the transition coupler mates with the first connecting surface 103 of the train coupler 1 of the vehicle to be rescued.

[0122] As a rescue coupler, the transition coupler 2 has a second hook tongue 206 mounted on the hook body 201. This second hook tongue 206 is positioned on the hook body 201, facing the hook tail 203, and is designed to engage with the first coupling rod 110 of the Type 40 coupler. Similarly, the second hook tongue 206 is fixed to the hook body 201 and cannot rotate; therefore, a spring connected to the second hook tongue 206 is not required to drive its rotation.

[0123] The transition coupler 2 is further provided with a second connecting rod 208 . The second connecting rod 208 and the hook body 201 are an integrated structure and cannot be disassembled. That is, in this embodiment, the second connecting rod 208 is fixedly mounted on the hook body 201 .

[0124] The second hook tongue 209 and the second connecting rod 208 are arranged on both sides 211 of the hook body 201; that is, they are respectively located on opposite sides 211 of the hook body 201; the length of the second connecting rod 208 is configured to be able to cross the second connecting surface 204 of the hook body 201 to connect with the first hook tongue 108 of the 40 type coupler.

[0125] In the above structure, the second hook tongue 206 and the second connecting rod 208 can be integrated with the hook body 201, and the transition coupler as a whole is a non-detachable structure, which is convenient for transportation and maintenance.

[0126] Because the first connecting rod 110 is in an extended state when the Type 40 coupler is connected, the portion located outside the hook body of the Type 40 coupler is relatively long, which can easily lead to an unstable connection with the second coupler tongue of the transition coupler. To address this problem, in some embodiments of the present application, a stop pin 238 (see Figure 13) is installed on the hook body 201 on one side of the second coupler tongue 206. The installation position of the stop pin 238 is configured such that after the first connecting rod 110 of the Type 40 coupler is connected to the second coupler tongue 206 of the transition coupler, the stop pin 238 is located outside the first connecting rod 110 to limit the rotation of the first connecting rod 110 and prevent it from disengaging from the second coupler tongue 206 of the transition coupler.

[0127] Furthermore, to address the installation issues of stop pin 238, in some embodiments, a stop pin mounting plate 239 is mounted on the hook body 201 on one side of the second coupler tongue 206. The plate comprises an upper mounting plate 240 positioned above the second coupler tongue 206 and a lower mounting plate 241 positioned below the second coupler tongue 206. Both the upper mounting plate 240 and the lower mounting plate 241 are provided with openings 242, through which stop pin 238 passes and is secured. Stop pin 238 is a detachable structure. When the transition coupler 2 is coupled to the 40-type coupler, stop pin 238 is installed. When the two couplers need to be disconnected, stop pin 238 is removed.

[0128] In order to construct the structure of the second hook tongue 206, in some embodiments of the present application, a connecting plate 243 is provided on the hook body 201, and the second hook tongue 206 is arranged on the side of the connecting plate 243 facing the hook tail end 203, and is an arc-shaped structure processed on the connecting plate 243, and the arc-shaped structure faces the hook tail end 203 side of the transition coupler.

[0129] A characteristic of the Type 40 coupler is that, in the coupled state, the first coupling rod 110 of the Type 40 coupler is in an extended state. The second coupling tongue 206 of the transition coupler, however, faces the side of the transition coupler's hook tail end 203, in the opposite direction of the first coupling rod 110 of the Type 40 coupler. The first coupling rod 110 needs to go around to the rear of the coupling plate 243 to couple with the transition coupler. However, the coupling plate 243 is located on the movement path of the first coupling rod 110, interfering with its movement. To address this technical issue, in some embodiments, the coupling plate 243 forms an inclined surface 244 facing the second coupling surface 204 of the transition coupler, that is, the side of the coupling plate 243 facing the first coupling rod 110. The inclined surface 244 is located from the side of the second coupling rod 208 near the transition coupler toward the outside of the transition coupler, and is inclined toward the side near the hook tail end 203. The inclined surface 244 has a guiding function. When the 40-type coupler is connected to the transition coupler 2, the first connecting rod 110 contacts the inclined surface 244 and moves along the inclined surface 244. When it moves to the edge outside the inclined surface 244, it bypasses the connecting plate 243 and connects with the second coupler tongue 206.

[0130] In the prior art, the second connecting surface of the transition coupler used for coupling to the Type 40 coupler also has a convex and concave cone, resulting in a large overall area of ​​the second connecting surface and a large overall volume and weight of the transition coupler. To address this issue, the first connecting end 202 of the hook body in this embodiment includes an upper connecting surface 228 and a lower connecting surface 229 spaced apart from each other (i.e., the second connecting surface 204 is divided into an upper connecting surface 228 and a lower connecting surface 229 spaced apart from each other); the two are connected by a hook body seat 230; the hook body seat 230 extends from one side of the first connecting end 202 toward the side of the hook tail end 203, presenting a concave arc segment 231. The concave mentioned here refers to the concave from the first connecting end 202 toward the side closer to the hook tail end 203. The plate-like structure 232 of the hook tail end 203 and the arc segment 231 can be an integrally molded structure. This structure greatly simplifies the structure of the coupler head, making the hook head lighter. In order to improve the stability of the structure, a reinforcing rib 233 is provided between the hook tail end 203 and the arc segment 231 , which can be regarded as a part of the hook body seat 230 .

[0131] More specifically, as shown in Figures 9-11, the arc segment 231 is an inwardly concave hollow structure, forming a concave groove body 237 with an opening toward the side of the first connecting end 202, and the upper connecting surface 228 and the lower connecting surface 229 spaced apart from each other are relatively located at the upper and lower ends of the arc segment 231.

[0132] In one embodiment, the lateral length of the arcuate segment 231 accounts for no less than 30% of the lateral length of the hook body 201, and may be, for example, 35%, 40%, etc. The lateral length of the arcuate segment 231 accounts for no less than 50% of the lateral length of the hook body seat 230, and may be, for example, 50%, 52%, 54%, 55%, 58%, 60%, etc. The lateral length generally refers to the left-right direction in Figure 10 . This arrangement maximizes the proportion of the concave groove while ensuring the strength of the transition coupler, thereby reducing the weight of the transition coupler.

[0133] The overall height of the second connecting surface 204 (i.e., the sum of the heights of the upper and lower connecting surfaces) does not exceed 30% of the overall height of the hook body 201, for example, 25%, 20%, etc. The width of the second connecting surface 204 (roughly shown in the front-to-back direction in FIG. 10 ) does not exceed 50% of the width of the first connecting surface 103 of the train coupler 1, for example, 45%, 40%, 35%, 30%, etc. These configurations can further reduce the size and weight of the transition coupler.

[0134] The width of the arcuate segment 231 is roughly equal to the width of the upper and lower connecting surfaces 228 and 229, and is significantly smaller than the overall width of the first connecting surface 103 of the Type 40 coupler. This reduces the overall weight of the transition coupler and prevents interference with the convex taper of the train coupler. The concave groove of the arcuate segment is close to the convex taper 104 of the Type 40 coupler, but the width of the arcuate segment prevents interference between the convex tapers of the train couplers. This structure minimizes the overall volume and weight of the transition coupler. To further reduce weight, multiple weight-reducing holes can be designed into the arcuate segment of the hook body.

[0135] In some embodiments, there is a gap 234 in the middle part of the upper connecting surface 228 and the lower connecting surface 229. The gap 234 matches the air duct position 111 of the 40-type coupler to avoid interference between the air ducts between the transition coupler and the train coupler during the coupling process.

[0136] Furthermore, the arc segment 231 is a regular circular arc, and the hook tail end 203 is located at a symmetrically divided position of the arc segment, installed toward the rear, and the two are welded together. The second connecting rod 208 of the transition coupler is installed on the first side of the symmetrically divided position, and the second hook tongue 206 is arranged on the second side opposite the first side; in other words, the second hook tongue 2 and the second connecting rod 5 are arranged roughly opposite each other with respect to the arc segment 107 or the hook body seat 230. This configuration can ensure the uniform symmetry of the transition coupler. The stop pin 238 is installed on the side wall of the arc segment of the hook body, and the upper mounting plate 240 and the lower mounting plate 241 are symmetrically installed along the symmetry axis X of the arc segment of the hook body, on the upper and lower sides of the symmetry axis X.

[0137] This embodiment provides a lightweight, integrated transition coupler that meets lightweight requirements. The coupling process can be performed by a single person, is simple to operate, and features a safety pin structure to prevent accidental uncoupling.

[0138] A fourth embodiment of the present application provides a method for coupling a transition coupler for a Type 40 coupler, which is used to couple the transition coupler described in the third embodiment with a Type 40 coupler, comprising the following steps:

[0139] Pull the uncoupling handle 112 of the 40-type coupler to rotate the first coupler tongue 108 of the 40-type coupler so that the first coupler tongue 108 of the 40-type coupler is connected to the second connecting rod 208 of the transition coupler;

[0140] When the uncoupling handle 112 of the 40-type coupler is released, the first coupler tongue 108 of the 40-type coupler rotates in the opposite direction under the action of the spring restoring force, so that the first connecting rod 110 of the 40-type coupler is connected to the second coupler tongue 206 of the transition coupler.

[0141] In some embodiments of the present application, the coupling method further includes: during the coupling process of the first coupling rod 110 of the 40-type coupler and the second coupler tongue 206 of the transition coupler, the first coupling rod 100 contacts the inclined surface 244 of the coupling plate 243, moves along the inclined surface 244 to the rear side of the coupling plate, and is coupled with the second coupler tongue 206 of the transition coupler.

[0142] The following further explains the method of using the transition coupler from the two perspectives of coupling and uncoupling steps.

[0143] Connecting steps: As shown in Figure 12a, pull the uncoupling handle 112 of the Type 40 coupler, the coupler tongue plate 107 rotates clockwise, and the front cylindrical head of the second connecting rod 208 of the transition coupler is placed into the hook tongue arc of the coupler tongue plate 107; as shown in Figure 12b, release the uncoupling handle 112 of the Type 40 coupler, the coupler tongue plate 107 rotates counterclockwise under the action of the torsion spring, and the first connecting rod 110 of the Type 40 coupler acts on the inclined surface 244 of the connecting plate 243; as shown in Figure 12c, swing the first connecting rod 110 of the Type 40 coupler into the hook tongue arc on the rear side of the connecting plate 243; as shown in Figure 12d, insert the stop pin 238, and install the R-type pin to fix the stop pin 238, completing the connection between the transition coupler and the Type 40 coupler.

[0144] Uncoupling steps: Pull out the retaining pin 238, rotate the first connecting rod 110 of the Type 40 coupler clockwise to remove it from the curved opening of the connecting plate 243; pull the uncoupling handle 112 of the Type 40 coupler to remove the cylindrical head at the front end of the second connecting rod 208 of the transition coupler from the curved opening of the coupler knuckle of the Type 40 coupler. Uncoupling is complete.

[0145] The described embodiments are merely descriptions of the preferred embodiments of the present application and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements made to the technical solutions of the present application by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present application.

Claims

1. A transition coupler, wherein: include: Hook body: including a first connecting end and a hook tail end; the first connecting end is used to connect with the train coupler, including a second connecting surface; Second hook tongue: arranged on the hook body, used to connect with the first connecting rod of the train coupler; as well as The second connecting rod is arranged on the hook body; The second hook tongue and the second connecting rod are respectively arranged on both sides of the hook body; the length of the second connecting rod is configured to be able to cross the second connecting surface to connect with the first hook tongue of the train coupler; The first connecting end comprises an upper connecting surface and a lower connecting surface spaced apart from each other, wherein the upper connecting surface and the lower connecting surface are connected via a hook body seat; the hook body seat comprises an arc segment recessed from one side of the first connecting end to one side of the hook tail end.

2. The transition coupler according to claim 1, wherein: More specifically, it includes: Hook body: including a first connecting end and a hook tail end; the first connecting end is used to connect with the train hook, including a second connecting surface; the hook tail end can be connected to the traction mechanism; Second hook tongue: arranged on the hook body, used to connect with the first connecting rod of the train coupler; A first mounting platform: arranged on the hook body, between the first connecting end and the hook tail end of the hook body; and Second connecting rod: detachably mounted on the first mounting platform; The second hook tongue and the second connecting rod are arranged on both sides of the hook body; the length of the second connecting rod is configured so that when it is installed on the first mounting platform, it can pass over the second connecting surface to connect with the first hook tongue of the train coupler; The first connecting end comprises an upper connecting surface and a lower connecting surface spaced apart from each other, wherein the upper connecting surface and the lower connecting surface are connected via a hook body seat; the hook body seat comprises an arc segment recessed from one side of the first connecting end to one side of the hook tail end.

3. The transition coupler according to claim 2, wherein: A second mounting platform is further provided on the hook body, and the second mounting platform is located on the same side of the first mounting platform, and is arranged relative to the first mounting platform in the direction close to the first connecting end of the hook body; the transition coupler further includes a connecting rod stopper, and the stopper is detachably mounted on the second mounting platform; after the second connecting rod is mounted on the first mounting platform and the stopper is mounted on the second mounting platform, the stopper is located on the outside of the second connecting rod.

4. The transition coupler according to claim 2, wherein: The second connecting rod includes a mounting end and a second connecting end; the mounting end forms an insertion slot, which is inserted into the first mounting platform; the second connecting rod and the first mounting platform are fixed via a fixing member; the second connecting end forms a connecting opening, and the first hook tongue of the train coupler can be hooked at the connecting opening.

5. The transition coupler according to claim 3, wherein: The second mounting platform includes a third mounting platform and a fourth mounting platform which are spaced apart from each other in an upper and lower manner, and sockets are arranged opposite to each other on the third mounting platform and the fourth mounting platform, and the barrier rod is inserted and installed between the sockets of the third mounting platform and the fourth mounting platform; in the longitudinal direction, the first mounting platform is located between the third mounting platform and the fourth mounting platform; the first mounting platform is arranged on the hook body seat on the rear side of the arc segment, and the first hook tongue is arranged along the first edge of the arc segment; the third mounting platform and the fourth mounting platform are arranged along the second edge of the arc segment.

6. A method for connecting a transition coupler, wherein: Using the transition coupler according to any one of claims 2 to 5, the coupling method comprises the following steps: The first connecting end of the transition coupler is brought into contact with the first connecting surface of the train coupler; Move the transition coupler so that the second coupler tongue of the transition coupler is connected with the first connecting rod of the train coupler; The first connecting end of the rotary transition coupler is completely in contact with the first connecting surface of the train coupler; Connect the second connecting rod of the transition coupler to the first hook tongue of the train coupler; The second connecting rod of the rotating transition hook is fixed on the first mounting platform.

7. The transition coupler according to claim 1, wherein: More specifically, it includes: Hook body: including a first connecting end and a hook tail end, wherein the first connecting end is used to connect with a train coupler and includes a second connecting surface; A second hook tongue is provided on the hook body and is used to connect with the first connecting rod of the train coupler; and The second connecting rod: an integrated structure with the hook body; The second hook tongue and the second connecting rod are arranged on both sides of the hook body; the length of the second connecting rod is configured to be able to cross the second connecting surface to connect with the first hook tongue of the train coupler; The first connecting end comprises an upper connecting surface and a lower connecting surface spaced apart from each other, wherein the upper connecting surface and the lower connecting surface are connected via a hook body seat; the hook body seat comprises an arc segment recessed from one side of the first connecting end to one side of the hook tail end.

8. The transition coupler according to claim 7, wherein: A stop pin is installed on the hook body on one side of the second hook tongue, and the installation position of the stop pin is configured as follows: after the first connecting rod of the train coupler is connected with the first hook tongue of the transition coupler, the stop pin is located on the outside of the first connecting rod of the train coupler to limit the rotation of the first connecting rod.

9. The transition coupler according to claim 8, wherein: A stop pin mounting plate is installed on the hook body on one side of the second hook tongue, including an upper mounting plate located above the second hook tongue and a lower mounting plate located below the second hook tongue, each of the upper mounting plate and the lower mounting plate is provided with an opening, and the stop pin passes through the openings of the upper mounting plate and the lower mounting plate and is fixed; a connecting plate is provided on the hook body, and the second hook tongue is formed on the side of the connecting plate facing the hook tail end; the side of the connecting plate facing the second connecting surface is an inclined surface, and the inclined surface is located from the side of the second connecting rod close to the transition hook to the outside of the transition hook, and is inclined toward the side close to the hook tail end.

10. The transition coupler according to any one of claims 1 to 5 and 7 to 9, wherein: The second hook tongue is fixedly arranged on the hook body and cannot rotate.

11. The transition coupler according to any one of claims 1 to 5 and 7 to 9, wherein: The arc section of the hook body is in the shape of an arc plate; the arc section is a concave hollow structure, forming a concave groove body with an opening toward one side of the first connecting end, and the upper connecting surface and the lower connecting surface spaced apart from each other are relatively located at the two ends of the arc section.

12. The transition coupler according to any one of claims 1 to 5 and 7 to 9, wherein: Notches are formed on the upper connecting surface and the lower connecting surface. When the transition hook is connected to the train hook, the position of the notch is aligned with the position of the air duct connector of the first connecting surface of the train hook. Reinforcing ribs are arranged between the arc section and the hook tail end.

13. A method for connecting a transition coupler, used for connecting the transition coupler according to any one of claims 7 to 9 with a train coupler, wherein: The following steps are involved: Pull the unhooking handle of the train coupler to rotate the first hook tongue of the train coupler so that the first hook tongue is connected with the second connecting rod of the transition coupler; Release the unhooking handle of the train coupler to connect the first connecting rod of the train coupler with the second hook tongue of the transition coupler.

Images