Coupler and method of operating a coupler

Abstract

The invention relates to a coupling comprising a coupling head (11) which houses a mechanical coupling (18) comprising a hook plate (14) with a recess (16) and a shaft (15) mounted on a first end of the hook plate, a blocking mechanism (20) for preventing the mechanical coupling from coupling. The invention also relates to a method of operating a coupling to engage the blocking mechanism.

Description

Technical Field

[0001] The present invention includes a coupler for railway vehicles, the coupler having a blocking mechanism for preventing unwanted coupling of the mechanical coupler. Background Technology

[0002] Railway couplers are used to couple railway vehicles to each other by mechanical coupling, and often by other forms of coupling such as electrical or pneumatic coupling. Mechanical couplers typically include a hook plate within the coupler head, which is connected to a protruding shaft configured to fit into a recess in the hook plate of another coupler. When the protruding shafts of both couplers extend into the coupler head of the mating coupler and engage with the recess there, the hook plates rotate simultaneously, locking the shafts in place to prevent retraction until the hook plates rotate again to release them.

[0003] However, since mechanical coupling typically occurs automatically when one coupler strikes another with sufficient force, it is difficult to prevent unwanted coupling in situations where one coupler might strike another without intending to couple. Once unwanted coupling occurs, the couplers need to be disengaged again before normal operation can be restored, which is time-consuming and cumbersome.

[0004] Currently, there is no known solution to prevent accidental coupling in railway couplers. Therefore, improvements are needed in this area. Summary of the Invention

[0005] The object of this invention is to eliminate or at least reduce the aforementioned problems. This is achieved by the coupler and the method of operating the coupler according to the appended independent claims.

[0006] The coupler according to the invention includes a coupler head that houses a mechanical coupler, the mechanical coupler including a hook plate pivotally mounted in the coupler head, the mechanical coupler further including: a shaft mounted on a first end of the hook plate; and a recess disposed on a second end of the hook plate for receiving a shaft from a second coupler, such that rotation of the hook plate causes mechanical coupling. Furthermore, the coupler includes a blocking mechanism for preventing coupling of the mechanical coupler.

[0007] The main advantage of this invention is that it avoids unwanted coupling of the couplers. Typically, mechanical coupling occurs through contact between one coupler and another, where the protruding shaft of each coupler enters the recess of the opposing coupler and causes rotation of the hook plates that couple the couplers to each other. However, by providing a blocking mechanism on the mechanical coupler, rotation of the hook plates is effectively prevented, thus allowing the couplers to contact each other without mechanical coupling. It is particularly noteworthy that even when the invention is arranged on only one of the couplers, it prevents mechanical coupling because preventing rotation of one hook plate will also prevent rotation of the other. This is especially advantageous because providing the blocking mechanism on only one of the couplers is sufficient to achieve the aforementioned main advantage.

[0008] Suitable, the blocking mechanism includes a first member having a first contact portion connected to the hook plate, and the blocking mechanism further includes a second member having a second contact portion connected to the coupler head. Furthermore, the first and second contact portions are configured to contact each other in the blocking position, thereby preventing movement of the first member relative to the second member, thus blocking rotation of the hook plate of the mechanical coupler. Thus, a simple and effective blocking is achieved by having the first and second members contact each other in the blocking position and preventing rotation of the hook plate.

[0009] Suitablely, the first member is pivotally connected to the hook plate at an attachment point arranged circumferentially between the first and second ends of the hook plate, such that rotation of the hook plate causes the first member to move in a lateral direction perpendicular to the longitudinal direction along the coupler, and this lateral movement of the first member causes rotation of the hook plate. Thus, rotation of the hook plate can be effectively prevented by preventing the first member from moving in the lateral direction. This is particularly advantageous because the laterally extending first member allows access from outside the coupler head, especially where the first member protrudes outside the coupler head through an opening.

[0010] Additionally, the first contact portion suitably includes a notch having a first blocking surface, and the second contact portion is disposed on the engaging member of the second member, the engaging member being configured to enter the notch such that the second contact portion contacts the first blocking surface to prevent movement of the first member relative to the engaging member of the second member. Thus, the first and second contact portions can engage in an effective and reliable manner, preventing movement of the first member when the blocking mechanism engages.

[0011] Suitablely, the engaging member is a hook pivotally arranged on the second member, and the hook is configured to pivot into the notch and contact the first blocking surface in the blocking position. Thus, the engaging member is held more stably against the first blocking surface, thereby preventing disengagement of the blocking mechanism. It is particularly advantageous to provide the engaging member in the form of a hook, as this allows gripping of the first blocking surface, making the engagement between the engaging member and the first member stable and reliable.

[0012] Additionally, the blocking mechanism may include a control member configured to move the engaging member into the blocking position. Thus, the engaging member operates reliably and efficiently without requiring direct manipulation of the engaging member.

[0013] Suitablely, the control member also includes a biasing device configured to bias the engaging member toward the first member in the blocking position. Thus, the engaging member is held stably and securely, and longitudinal forces acting on the control member can be absorbed by the spring to avoid damage to the blocking device, as the spring can be compressed and expanded. In some embodiments, the biasing device includes a spring.

[0014] Furthermore, the blocking mechanism may include a handle for operating the control member, accessible from one side of the coupler head, and the handle is configured to move along at least a partially lateral path to move the engaging member into the blocking position, and to move in the opposite direction to remove the engaging member from the blocking position. Thus, the operation of the blocking mechanism becomes efficient and reliable without requiring additional components, while the at least partially lateral path effectively prevents undesirable disengagement of the blocking mechanism due to longitudinal forces acting on the coupler head or on portions of the blocking mechanism or mechanical coupler.

[0015] The blocking mechanism suitably includes a second handle accessible from a second side of the coupler head, wherein the second handle is connected to a control member for operating the control member. Thus, the blocking mechanism can be manually operated regardless of which side of the coupler the operator is located on, making engagement and disengagement of the blocking mechanism even more convenient.

[0016] Additionally, the coupler may include a trigger connected to the first member to induce movement of the first member when the blocking mechanism is not in the blocking position. This facilitates mechanical coupling when the blocking mechanism is not engaged.

[0017] The second contact portion of the second component is suitably configured to interact with the first contact portion of the first component in the blocking position, thereby preventing triggering of the first component. Thus, the blocking position not only prevents rotation of the hook plate but also prevents the operation of the trigger, thereby further preventing unwanted coupling.

[0018] In embodiments including a trigger, the trigger is suitably configured to cause movement of the first member in the trigger direction, and the second contact portion is then configured to abut against the first contact portion in a blocking position to prevent movement of the first member in the trigger direction. Thus, the trigger is effectively blocked by the blocking mechanism.

[0019] In some embodiments, the trigger is combined with the blocking mechanism such that the blocking mechanism is engaged by holding the trigger in the activated position, thereby causing the blocking mechanism to form a blocking position.

[0020] Suitablely, this embodiment includes a trigger having a triggering member and also a connecting member configured to slidably connect the triggering member to a coupler head, such that the triggering member can slide in the triggering direction between a non-activated position and an activated position. A second member of a blocking mechanism is connected to the trigger, such that movement of the triggering member causes a corresponding movement of the second member. The blocking mechanism also includes an engaging member configured to hold the blocking mechanism in a blocking position by preventing movement of the triggering member from the activated position. Thus, the blocking mechanism is implemented in a compact and convenient manner, and provides both triggering coupler and blocking coupling functions in a highly advantageous way. By holding the trigger in the activated position, triggering of the second coupler is prevented, and by holding the first member of the blocking mechanism in the blocking position, coupling of the mechanical coupler is effectively prevented.

[0021] The trigger may also include a stop on the connecting member, and the connecting member may be arranged in a through-hole in the coupler head. Additionally, the engaging member may be configured to prevent movement of the trigger member by holding the stop at a distance from the through-hole. Thus, effective blocking is achieved because the position of the trigger, and consequently the position of the second member, is maintained by the presence of the engaging member. In a particularly advantageous embodiment, the engaging member is inserted between the stop and the through-hole in the coupler head, thereby effectively preventing movement of the connecting member.

[0022] Additionally, the blocking mechanism suitably includes a control member configured to move the engaging member to and / or from the blocking position, wherein the control member is mechanically operated by a mechanical component that contacts the engaging member, or by an actuator that controls the engaging member. Thus, the engaging member can be brought to and / or moved away from the blocking position in an efficient and reliable manner. The mechanical operation of the mechanical component can be, for example, pushing or pulling a line or rod of the engaging member, and may also include a biasing device that biases the engaging member toward the blocking position or in the opposite direction, such that the mechanical component only needs to operate in one of the directions. The actuator may include an electric or electromagnetic actuator, such as an electric motor or solenoid, which acts on the engaging member by means of a component extending or retracting from the actuator. When using an actuator, a biasing device may also be provided to bias the engaging member in one direction, and the actuator needs to resist the bias to drive the engaging member in the opposite direction.

[0023] In some embodiments, the first component of the blocking mechanism is integral with the hook plate, rather than being a separate component.

[0024] In this embodiment, the blocking mechanism includes a first member having a first contact portion, integrally formed with the hook plate, and a second member having a second contact portion connected to the coupler head, wherein the first and second contact portions are configured to contact each other in the blocking position, thereby preventing movement of the first member relative to the second member, thus blocking rotation of the hook plate of the mechanical coupler. This effectively blocks rotation of the hook plate closer to its axis of rotation. This has the same advantages as disclosed above with reference to the embodiment providing a first member extending from the hook plate, but requires fewer parts and can be manufactured in a compact and efficient manner.

[0025] In this embodiment, the first member is suitably a steering knuckle on the hook plate, and the first contact portion is suitably the surface of the steering knuckle. A second contact portion is suitably disposed on an engaging member of the second member, the engaging member preferably configured to push the second contact portion toward the first contact portion, such that the second contact portion prevents the hook plate from rotating. Thus, a highly compact design is achieved, and the second contact portion is effectively positioned to block the rotation of the hook plate by being pushed into place by the engaging member.

[0026] Additionally, the engaging member is suitably configured to push the second contact portion toward the first contact portion by a biasing device acting on the engaging member, thereby providing a bias toward the blocking position. Thus, the blocking mechanism is biased toward the blocking position, and once the hook plate rotates to the decoupled position and falls into place via the second contact portion, the blocking mechanism automatically reaches the blocking position.

[0027] The blocking mechanism suitably includes a control member for moving the engaging member away from the blocking position, wherein the control member is preferably controlled by an actuator. Thus, the engaging member operates reliably and conveniently, and this is particularly advantageous when combined with a biasing device, as it means that the actuator can move the engaging member away from the blocking position and the blocking position will be engaged without the actuator actively counteracting it.

[0028] Suitablely, in all embodiments of the invention, the coupler further includes a decoupling mechanism for decoupling the coupler from similar couplers. Thus, the coupler can be decoupled when it is coupled to another coupler. Furthermore, the decoupling mechanism is preferably separate from the blocking mechanism. Therefore, since the blocking mechanism operates separately from the decoupling mechanism, for example by a separate handle, the operation of the coupler is improved.

[0029] A decoupling mechanism is arranged or adapted to rotate the hook plate. More specifically, the decoupling mechanism is arranged to rotate the hook plate in a first direction. A blocking mechanism is arranged to prevent the hook plate from rotating in a second direction opposite to the first direction.

[0030] In some embodiments, the blocking mechanism can operate automatically by means of a blocking mechanism configured to engage or disengage when a criterion is met. Thus, reaching the blocking position is achieved without the operator actively engaging the blocking mechanism. Additionally, disengagement of the blocking mechanism is possible without human intervention. The criterion may be related to operating parameters of the railway vehicle equipped with the coupler, such as its speed. Alternatively, the criterion may be related to the location of the railway vehicle, such as its location at a station or in another area suitable for coupling. In this way, coupling of the mechanical coupler can be prevented in situations where coupling is undesirable, such as when the train's speed is too high or when the train is not in a suitable area (such as a station).

[0031] Appropriately, the blocking mechanism can be remotely operated, preferably from inside the train where the coupler is installed. Thus, the blocking mechanism can be engaged or disengaged without requiring an operator to be present at the coupler, which is highly advantageous from both a safety and convenience standpoint, as being able to block or allow coupling without leaving the train saves both time and is less cumbersome.

[0032] The present invention also relates to a method for operating a coupler of a railway vehicle, the method comprising:

[0033] - Provides a coupler according to any embodiment of the present invention.

[0034] - Set the coupler to decoupled state, and

[0035] - Engagement blocking mechanism to prevent mechanical coupling of the coupler.

[0036] The blocking mechanism can be activated, for example by pulling a handle, before or after the decoupling mechanism is activated. However, the blocking mechanism only engages after the coupler is in the decoupled state.

[0037] The method also suitably includes disengaging the blocking mechanism from the blocking position, thereby enabling mechanical coupling of the coupler. Thus, within the scope of the invention, both blocking coupling and achieving coupling are possible.

[0038] From the following detailed description, those skilled in the art will readily understand the many additional benefits and advantages of the present invention. Attached Figure Description

[0039] The invention will now be described in more detail with reference to the accompanying drawings, in which:

[0040] Figure 1 A three-dimensional view of a coupler based on the prior art has been disclosed;

[0041] Figure 2 A top sectional view of the first embodiment of the present invention is disclosed, wherein the coupler is in a decoupled state and the blocking mechanism is disengaged;

[0042] Figure 3 Publicly disclosed from Figure 2 The enlarged cross-sectional view, viewed from above the circle, shows the blocking mechanism;

[0043] Figure 4 A top sectional view of the first embodiment is disclosed, wherein the coupler is in a coupled state and prevents the mechanism from disengaging;

[0044] Figure 5 A top sectional view of the first embodiment is disclosed, wherein the coupler is in a decoupled state and the blocking mechanism is engaged;

[0045] Figure 6 Publicly disclosed from Figure 5 The enlarged cross-sectional view, viewed from above the circle, shows the blocking mechanism;

[0046] Figure 7 A top sectional view of the first embodiment is disclosed, wherein the coupler is in a decoupled state and the blocking mechanism is disengaging;

[0047] Figure 8 Publicly disclosed from Figure 7 The enlarged cross-sectional view, viewed from above the circle, shows the blocking mechanism;

[0048] Figure 9a A detailed top view of a second embodiment of the invention is disclosed, wherein the blocking mechanism is engaged;

[0049] Figure 9bA detailed top view of the second embodiment is disclosed, in which the blocking mechanism is disengaged;

[0050] Figure 10a A top plan view of a third embodiment of the present invention is disclosed, wherein the blocking mechanism is engaged;

[0051] Figure 10b Publicly disclosed from Figure 10a The enlarged view above the circle shows the blocking mechanism;

[0052] Figure 11a A top plan view of a fourth embodiment of the present invention is disclosed, wherein the blocking mechanism is disengaged;

[0053] Figure 11b It was made public. Figure 11b The top plan view of the fourth embodiment, wherein the blocking mechanism is engaged;

[0054] Figure 12a A perspective view of a coupler head having a connecting member for blocking the blocking mechanism of the fourth embodiment is disclosed.

[0055] Figure 12b A plan view of the trigger and blocking mechanism of the fourth embodiment in the blocking position is disclosed;

[0056] Figure 12c A plan view of the joining member according to the fourth embodiment is disclosed;

[0057] Figure 13a A top plan view of the fifth embodiment of the present invention is disclosed, wherein the blocking mechanism is disengaged;

[0058] Figure 13b A top-view magnified plan view of the fifth embodiment is disclosed, wherein the second contact portion contacts the first member but is not in an obstructive position; and

[0059] Figure 13c A top-view magnified plan view of the fifth embodiment is disclosed, in which the blocking mechanism is in the blocking position.

[0060] All the accompanying drawings are schematic and not necessarily drawn to scale, and generally only show the parts necessary to illustrate the corresponding embodiments, where other parts may be omitted or merely shown. Unless otherwise indicated, any reference numerals appearing in multiple drawings refer to the same object or feature throughout the drawings. Detailed Implementation

[0061] The design and function of railway couplers are well known in the art. However, in reference... Figure 2 Before beginning to describe the present invention, reference will be made to Figure 1 Briefly describe the main components and functions of a coupler based on existing technology.

[0062] therefore, Figure 1 A coupler 100 for railway vehicles is disclosed, comprising a bracket 102 for mounting on an end of a railway vehicle and a coupler head 101 for coupling to a second coupler of similar design mounted on the end of another railway vehicle. A pull rod 103 is disposed between the bracket 102 at the rear end of the coupler 100 and the coupler head 101 at the front end of the coupler 100, and other components such as buffers and deformation tubes are configured to connect to the pull rod 103 so that forces can be absorbed elastically or inelastically. In the coupler head 101, a mechanical coupler 108 includes a pivotable hook plate 104 from which a shaft 105 protrudes through a first opening 109. A cone 111 is also typically configured to connect to the shaft 105 and extend into a second opening 110 of the coupler-like device in the coupled state.

[0063] The hook plate 104 is arranged to rotate about a substantially vertically oriented axis and also includes a recess 106 accessible through the second opening 110. Additional couplers 107 are typically provided on the coupler head 101, and these couplers may include electrical couplers, pneumatic couplers, and optionally other types of couplers.

[0064] Mechanical coupler 108 operates via a shaft 105 extending in the forward direction (i.e., at the rear end away from bracket 102), such that when encountering a second coupler (not shown), shaft 105 can protrude into a second opening of the second coupler and fit into a recess in the hook plate of the second coupler. Simultaneously, the shaft of the second coupler protrudes into... Figure 1 The shaft enters the second opening 110 of the coupler 100 and contacts the recess 106 of the hook plate 104. By pushing the shaft into the recess, the hook plate 104 is rotated, causing... Figure 1 The coupler 100 is mechanically coupled to the second coupler. When the coupler 100 and the second coupler come into contact with each other with sufficient force, the coupling itself occurs automatically, thereby generating a buffer stroke that causes the hook plate to rotate.

[0065] To decouple the mechanical coupler 108, the hook plate 104 is rotated backward, causing the shaft 105 to be released from the recess of the second coupler, and causing the shaft of the second coupler to be... Figure 1 The recess 106 of the coupler 100 is released.

[0066] When the term "connection" is used herein, it should be understood as one component being directly joined or attached to another component, or via at least one intermediate component or object. Thus, the two connected parts can be integrally formed to create a single part or can be joined to each other in any suitable manner. Alternatively, they can be connected to each other by joining or attaching one of them to an intermediate component, which in turn is joined or attached to the other. Furthermore, they can be connected to each other by a series of such intermediate components, which together form a connection between one component and another.

[0067] The term "blocking position" is used in this document to refer to the position of the blocking mechanism that prevents coupling of the mechanical coupler. Therefore, the blocking position can refer to the position of the blocking mechanism as a whole, or it can refer to the position occupied by a single part of the blocking mechanism when the blocking mechanism is effective and prevents coupling.

[0068] This specification discloses various embodiments and variations of the invention, and it is particularly noteworthy that any feature from one embodiment can be freely combined with features from any other embodiment, provided that such combination is not explicitly disclosed as undesirable or inappropriate.

[0069] The invention will now be described in more detail, first in several embodiments of the coupler 10 itself and then in the method according to the invention.

[0070] In the first, second, third, and fourth main embodiments, and variations thereof, the main principle of the invention is that the first members 21, 21B connected to the hook plate 14 are blocked from moving by the second members 22, 22B connected to the coupler head 11. This blocking occurs through the interaction of first contact portions 23, 23B on the first members 21, 21B and second contact portions 24, 24B on the second members 22, 22B, and in some embodiments, is caused by engaging members 25, 25B that orient the second contact portions 24, 24B toward the first contact portions 23, 23B.

[0071] In the fifth main embodiment and variations thereof, the main principle of the invention is the same as that of the first four main embodiments, except that the first component 21A is integrally formed with the hook plate 14, such that the first contact portion 23A is part of the hook plate 14, and a barrier is formed by the second contact portion 24A contacting the first contact portion 23A, thereby preventing the rotation of the hook plate 14.

[0072] Therefore, although the designs of the first components 21, 21A, and 21B are different, the operating principles of the various embodiments are the same.

[0073] In the following, similar or identical parts in the embodiments are indicated by the same reference numerals, and it is particularly emphasized that, unless explicitly indicated otherwise, the design and operation of the parts are similar in all embodiments.

[0074] Figure 2 A coupler 10 having a coupler head 11 is disclosed, in which a mechanical coupler 18 is disposed. The mechanical coupler 18 includes a hook plate 14 pivotally mounted on a hook plate pivot 12 within the coupler head 11. A shaft 15 is mounted on a first end 141 of the hook plate 14, and the shaft 15 is suitably pivotable on a shaft pivot 151, which is fixed to the hook plate 14 and may include a protruding pin 12A mounted on or integral with the hook plate 14. A recess 16 is provided on a second end 142 of the hook plate 14. Figure 2 In a first embodiment, the first end 141 and the second end 142 are opposite ends of the hook plate 14, such that they are arranged diametrically opposite on both sides of the hook plate pivot 12. In some embodiments, the first end 141 and the second end 142 may alternatively be spaced apart from each other in the circumferential direction around the hook plate 14, such that they are separated but not diametrically opposite. The first end may alternatively be referred to as the first portion of the hook plate, and the second end may alternatively be referred to as the second portion of the hook plate.

[0075] The hook plate pivot 12 may include a pin 12A fixed relative to the coupler head 11, and a spring 13 may be provided and arranged to bias the hook plate 14 along the rotation direction R (see Figure 7 ), so that the hook plate 14 is pushed toward the position where the shaft 15 extends from the coupler head 11, i.e. Figure 2 The counter-clockwise direction in the middle. This corresponds to the decoupling position.

[0076] exist Figure 2 In the image, coupler 10 is shown in a decoupled state from a second coupler 10', which has a similar design to coupler 10. Therefore, the second coupler 10' includes a second coupler head 11' that accommodates a second mechanical coupler 18', which has a second hook plate 14' pivotable on a second hook plate pivot 12', and a second shaft 15' pivotally attached to the second hook plate on a second shaft pivot 151'. The second hook plate 14' also includes a second recess 16' and a second spring 13 that pushes the second hook plate 14' into the decoupled state, in which the second shaft 15' extends from the second coupler head 11', i.e., along... Figure 2 The counterclockwise direction.

[0077] exist Figure 2In the decoupled state shown, the shaft 15 of the mechanical coupler 18 protrudes toward the second recess 16' of the second hook plate 14', and the second shaft 15' of the second mechanical coupler 18' protrudes toward the recess 16 of the hook plate 14. However, in the coupled state, the hook plate 14 and the second hook plate 14' do not rotate toward the coupled position.

[0078] Figure 4 The coupling state is shown, wherein shaft 15 and second shaft 15' are pushed into their respective receiving recesses 16, 16', causing hook plate 14 and second hook plate 14' to rotate into the coupling state. In this state, shaft 15 and second shaft 15' engage with recesses 16, 16', thereby achieving a secure coupling between coupler 10 and second coupler 10'.

[0079] Figure 2 The diagram also shows a blocking mechanism 20, which is configured to prevent the mechanical coupler 18 from coupling when the blocking mechanism 20 is engaged. Figure 2 In and in Figure 3 The image shows in more detail the disengagement of the blocking mechanism.

[0080] The blocking mechanism 20 includes a first member 21 connected to the hook plate 14. In a first embodiment, the first member 21 is also pivotally mounted on the hook plate 14 at attachment point A, such that rotation of the hook plate 14 causes the first member 21 to move at least partially in a transverse direction T perpendicular to the longitudinal direction L of the coupler 10 from the rear end. The first member 21 also includes a first contact portion 23, which in the first embodiment is in the form of a notch on the first member 21. In the first embodiment, the first contact portion 23 is disposed on or near an end of the first member 21 opposite to the end of the first member 21 attached to the hook plate 14. However, in other embodiments, the first contact portion 23 may also be disposed near the hook plate 14. The blocking mechanism 20 also includes a second member 22 connected to the coupler head 11, and the second member 22 includes a second contact portion 24 configured to interact with the first contact portion 23.

[0081] Figures 2 to 3 and Figure 4 Each is shown in its disengaged state, with the hook plate 14 rotating freely and thus coupling and decoupling. However, Figures 5 to 6 The blocking mechanism 20 in an engaged state is shown, wherein the second contact portion 24 contacts the first contact portion 23, thereby achieving the blocking position. Then, the interaction between the first contact portion 23 and the second contact portion 24 prevents the movement of the first member 21, and by thus holding the first member 21 in the blocking position, prevents the rotation of the hook plate 14, so that coupling may not occur.

[0082] In a first embodiment, the attachment point A of the first member 21 in the hook plate 14 is located between the first end 141 and the second end 142 in the circumferential direction of the hook plate 14. This should be understood as movement from the first end 141 along the circumference of the hook plate 14, passing through the attachment point A before reaching the second end 142. In the first embodiment, the attachment point A is located approximately midway between the first end 141 and the second end 142 in the circumferential direction, but in other embodiments, the attachment point A may alternatively be arranged closer to either the first end 141 or the second end 142.

[0083] By attaching the first member 21 to the hook plate 14 in this manner, rotation of the hook plate 14 causes at least partial movement in the lateral direction T. Conversely, movement of the first member 21 in the lateral direction T causes rotation of the hook plate 14 about the hook plate pivot 12. When the first member 21 is held in the blocking position, rotation of the hook plate 14 is thus prevented, making coupling of the mechanical coupler 18 no longer possible.

[0084] In a first embodiment, the first contact portion 23 includes a recess in the first member 21 having a first blocking surface 23', and a second contact portion 24 is disposed on the engaging member 25, which is held in the recess in the blocking position such that the second contact portion 24 contacts the first blocking surface 23'. The engaging member 25 is preferably in the form of a hook, which pivots into the recess and remains against the first blocking surface 23' such that movement of the first member 21 in the lateral direction toward the hook plate 14 is prevented by the contact of the second contact portion 24 on the hook with the first blocking surface 23'.

[0085] It is advantageous to configure the engaging member 25 as a hook because it more firmly establishes a blocking position in which the engaging member 25 cannot be linearly pushed away from the first contact portion 23 by a longitudinally applied force. Instead, the hook needs to pivot along an arc to avoid engaging with the first blocking surface 23' of the first contact portion 23.

[0086] In the first embodiment, the second contact portion 24 includes a second blocking surface 24', which clamps the first blocking surface 23' in the blocking position.

[0087] In other embodiments, the engaging member 25 may alternatively be configured as an object that performs linear movement toward the first member 21 in a longitudinal direction or moves in another direction (such as parallel to the first member 21).

[0088] The engaging member 25 forms part of the second member 22, and the blocking mechanism 20 further includes a control member 40 connected to the engaging member 25 and configured to move the engaging member 25 into the blocking position. In the first embodiment, the control member 40 is moved by operating a handle connected to it; however, other ways of operating the control member are possible within the scope of the invention, as will be described in further detail below.

[0089] In a first embodiment, the control member 40 is connected to the engaging member 25 via a biasing device 26 configured to bias the engaging member 25 toward the first member 21 in a blocking position. In other embodiments, the control member 40 may alternatively be connected to the engaging member 24 in other ways, operating the engaging member 25 and the biasing device 26 simultaneously or in sequence, such that the biasing device is brought into a position where it can bias the engaging member 25 toward the first member 21. Alternatively, the control member 40 may operate only the engaging member 25, while the biasing device 26 remains stationary or moves in another manner. In the first embodiment, the biasing device 26 includes a spring.

[0090] In some embodiments, the control member 40 is connected to a first handle 41 or a handle on the same side of a first side 11' of the coupler head 11, such that it can be operated from the side of the coupler head 11 where the blocking device is arranged. In other embodiments, the control member 40 is alternatively connected to a second handle 42 or a handle on the opposite side of a second side 11'' of the coupler head, such that it can be operated from the side of the coupler head 11 opposite to the first side 11'. In the first embodiment described herein, the first handle 41 and the second handle 42 are provided such that an operator can operate the handles 41, 42 to engage the blocking mechanism 20 regardless of which side of the coupler head 11 it is located on. The first handle 41 and the second handle 42 are connected to each other via the control member 40 itself, which extends through the coupler head 11 in at least a partially transverse direction, allowing the handles to be accessed from both sides of the coupler head 11. When the control member 40 is operated to engage the blocking mechanism 20, the control member 40 moves along a path at least partially in the lateral direction T toward the side of the coupler head 11 where the blocking mechanism is held, while disengagement of the blocking mechanism 20 occurs in the opposite direction along a path toward the opposite side of the coupler head 11. In other embodiments, the movement for engaging and disengaging the blocking mechanism 20 may also be in other directions. Advantageously, the direction of movement of the control member 40 is at least partially lateral, as this reduces the risk of accidental engagement or disengagement of the blocking mechanism 20 due to impacts on the coupler head. Any impacts on the coupler head 11 during use are likely to occur primarily in the longitudinal direction, as this is the direction in which the coupler head 11 moves along the track, and therefore, when the at least partially lateral path is used for this purpose, such impacts are unlikely to cause engagement or disengagement of the blocking mechanism 20 through the movement of the control member 40. In the first embodiment, the path is substantially lateral, such that the longitudinal component of the path is kept as small as possible or even eliminated. This further reduces or even eliminates the aforementioned unintentional operation of the control member 40. In some embodiments, a lock may also be provided to lock the control member 40 in place, wherein the blocking mechanism engages in a blocking state and / or disengages, and this also helps to prevent unintentional operation of the control member 40.

[0091] In some embodiments, the coupler 10 further includes a trigger 30 connected to the first member 21, such that when the blocking mechanism 20 is not engaged, movement of the first member 21 is triggered by activating the trigger 30. This facilitates coupling of the mechanical coupler 18, as the triggered movement of the first member 21 attached to the hook plate 14 causes rotation of the hook plate 14, which continues via a shaft pressing against a recess in the hook plate 14. When the blocking mechanism 20 is engaged such that the second contact portion 24 remains against the first contact portion 23 in the blocking position, the triggering is prevented, making rotation of the hook plate 14 caused by the trigger 30 impossible. The trigger 30 is activated by an impact caused by the second coupler 10', resulting in movement along a trigger direction D that is substantially parallel to or coincides with the longitudinal direction. However, in the blocking position, the blocking mechanism 20 of the first embodiment is configured such that the second contact portion 24 preferably abuts against the first contact portion in a direction opposite to the triggering direction D, such that the engaging member 25 resists any movement of the trigger 30, and appropriately causes the biasing device 26 to provide bias in a direction opposite to the triggering direction D. Thus, any movement of the trigger 30 is absorbed by the biasing device 26, and the biasing device 26 continues to push the engaging member 25 against the first member 21, such that rotation of the hook plate 14 is prevented even though the trigger 30 is triggered. Even if a small movement should occur in the first member 21 before it is absorbed by the biasing device, the movement will not be large enough to cause the first member 21 to leave the blocking position. For this purpose, a shoulder 31 can be provided on the trigger 30 (see...). Figure 8 This allows the hook plate 14 to rotate only by moving the first member 21 past the shoulder 31. Therefore, the trigger 30 is activated by an impact, and this activation causes movement along the trigger direction D.

[0092] Now refer to Figures 2 to 3 and Figures 5 to 6 The engagement blocking mechanism 20 is described in more detail, even when the blocking mechanism 20 enters the blocking position and thereby prevents the mechanical coupler 18 from coupling.

[0093] from Figures 2 to 3 Initially, the mechanical coupler 18 is in a decoupled state and the blocking mechanism 20 is not engaged. To engage the blocking mechanism 20, push the first handle 41 or the second handle 42 in the lateral direction T, as follows: Figure 5 As indicated by the arrow in the diagram. The movement causes the engaging member 25 of the second member 22 to rotate counterclockwise from... Figures 2 to 3 The disengagement position shown is pivoted to Figures 5 to 6 The engagement position shown is such that the second contact portion 24 contacts the first contact portion 23 of the first member. The pivoting movement of the hook-shaped engagement member 25 in the first embodiment causes, as in... Figure 6The movement to the engagement position, indicated by the arrow, causes the hook to at least partially enter the notch of the first member 21. Movement of the control member 40 caused by operating the first handle 41 or the second handle 42 also pushes the biasing device 26 into place, causing it to move along... Figure 6 Apply a bias force in the direction indicated by the arrow.

[0094] Advantageously, the hook contacts the first blocking surface 23', and the first blocking surface 23' is at least partially arranged in a direction perpendicular to the lateral direction. This allows the hook to hold the control member by contacting the first blocking surface 23' through the second blocking surface 24' of the second contact portion 24, thereby preventing lateral movement toward the hook plate 14. It is also advantageous that the first blocking surface is inclined, allowing the hook to grip it and preventing the hook edge from contacting the first blocking surface. Figure 6 The arrow is pushed away from the first member 21 in the opposite direction because this prevents the hook from coming off the notch of the first member 21 if a triggering force is applied from the trigger 30 or if any other force should be applied to the first member 21 in the longitudinal direction.

[0095] When disengaging from the blocking mechanism 20, the first handle 41 or the second handle 42 moves in a direction from the first side 11' towards the second side 11'' of the coupler head 11, and this is the opposite direction E to the direction used to engage the blocking mechanism 20. This is due to... Figure 7 As shown by the arrow.

[0096] When disengaged, the movement of the control member 40 causes the hook 24' to pivot out of the notch and removes the biasing device 26, so that the second contact portion 24 on the second engagement member 25 of the second member 22 no longer presses against the first contact portion 23 of the first member 21. This releases the first member 21 so that it can move when the hook plate 14 rotates counterclockwise as indicated by the arrow on the hook plate 14 and when it is triggered by the trigger 30.

[0097] Figure 8 The disengagement of the second contact portion 24 is disclosed in more detail, showing the movement of the engaging member 25 and the degree of freedom of movement of the first member 21 caused by the removal of the second contact portion 24.

[0098] In the first embodiment, the first member 21 is a rod, but in other embodiments, it can be implemented in other ways, as long as it can be mounted on the hook plate 14 and remain stationary relative to the second member 22.

[0099] Figures 9a to 9b A second embodiment is disclosed, wherein the blocking mechanism 20 is operated automatically using a solenoid 43 having a rod 44, which extends or retracts and pushes the control member 40, causing the second contact portion 24 to engage or disengage.

[0100] Figures 10a to 10b A third embodiment of automated operation with a blocking mechanism 20 is disclosed, which uses a motor 45 to control the position of the second contact portion 24 and to cause the second contact portion 24 to extend toward the first contact portion 23 of the first member 21. In this embodiment, the control member 40 may be held within a housing 40' connected to the second member 22 to prevent dust or dirt from entering.

[0101] In the second and third embodiments, the blocking mechanism 20 can be remotely operated by a train operator from inside the train where the coupler 10 is installed. Alternatively, the blocking mechanism 20 can automatically engage and / or disengage when given criteria are met, such as when the coupler 10 moves at a speed higher or lower than a given speed, or when the coupler 10 is in a given area (such as a station where coupling may occur). In the first embodiment, the blocking mechanism 20 is primarily arranged outside the coupler head 11; however, in other embodiments, the blocking mechanism 20 may alternatively be retained inside the coupler head 11, wherein only the first handle 41 or the second handle 42 is accessible from the outside of the coupler head 11. In yet another embodiment, the control member 40 can also be operated automatically as described above, and in such embodiments, the means for operating the control member 40 may be located outside or inside the coupler head 11.

[0102] Figures 11a to 11b A fourth embodiment of the invention is disclosed, which differs from the embodiments described above in that the blocking mechanism 20 is combined with the trigger 30. Therefore, the trigger 30 includes a trigger member 36 connected to a connecting member 32, which is suitably slidably mounted on the coupler head 11 by extending through a through-hole 35 in the coupler head and having a stop 34 disposed on the outside of the coupler head 11. In this embodiment, the connecting member 32 is disclosed as a rod and terminates at the stop 34. In alternative embodiments, the connecting member 32 may have any other shape and be arranged in other ways on the coupler head 11.

[0103] The trigger component 36 can thus be in the trigger direction D. Figure 11a The non-start position shown is the same as Figure 11b The trigger member 36 slides between the indicated start positions. In the start position, the trigger member 36 is pushed by the cone 111' of the second coupler 100', thereby entering the coupler head 11 and contacting the trigger 30.

[0104] The second component 22B of the blocking mechanism 20 is mounted on the trigger 30 (see...). Figure 12bThis causes the second component 22B to move together with the trigger component 36. This further means that activation of the trigger 30 also pushes the second component 22B along the trigger direction D. In the described embodiment, the first component 21B is in the form of a latching bar, which is pivotally attached to the hook plate 14 and extends through the trigger 30. On the first component 21B, a first contact portion 23B is configured as a notch or recess, such that the first component 21B is held in place against the trigger 30 in a non-blocking position. Figure 11a ), and conversely, it remains in place against the second member 22B in the blocking position ( Figure 11b When the trigger is activated, the connecting member 32 is pushed along the trigger direction D, and a distance is created between the stop member 34 and the through hole 35 (see...). Figure 12b Furthermore, the connecting member 32 is positioned in a blocking position by means of the engaging member 25B, which is placed between the stop 34 and the through hole 35, thereby preventing the connecting member 32 from retracting to the non-activated position. This results in the second member 22B being held in place. Figure 11b In the blocking position, the second contact portion 24B contacts the first contact portion 23B, thereby preventing movement of the first member 21B and thus preventing rotation of the hook plate 14 itself. In the described embodiment, the stop is a nut arranged on the thread of the connecting member 32, but in other embodiments it can be attached in other ways and can be provided as another component, as long as a secure installation of the stop 34 on the connecting member 32 is achieved.

[0105] Figure 12a The coupler head is shown externally, with a stop 34 protruding and an engaging member 25B positioned and controlled by an actuator or mechanical component 40B. When the trigger 30 is in the actuated position, the stop 34 protrudes, allowing the engaging member 25B to slide between the stop 34 and the coupler head, thereby keeping the connecting member 32 stationary. When the mechanical component 40B is used, it may include a push or pull wire or rod, such that force is transmitted to the engaging member 25B. When an actuator is used, it may include an electrical device such as a motor or an electromagnetic device such as a solenoid, and the functions disclosed above with reference to other actuators of the invention.

[0106] Alternatively, a biasing device such as a spring may be provided to bias the engaging member 25B in one direction, and only a mechanical member 40B or an actuator is required when it is necessary to move the engaging member 25B against the bias.

[0107] Figure 12bA fourth embodiment is disclosed from the side, showing a connecting member 32 extending through the through-hole 35 and an engaging member 25B positioned between the stop 34 and the coupler head to form a blocking position. Additionally, the trigger 30 may include a trigger biasing device 33 that provides a bias toward the non-activated position, such that the trigger member 36 extends in a direction opposite to the trigger direction D, provided it is not blocked by the engaging member 25B.

[0108] Figure 12c The engaging member 25B is disclosed in more detail, wherein the stop 34 and the mechanical member 40B are connected to the engaging member 25B by a wire in the example of the fourth embodiment. Suitablely, a cover (not shown) is also provided to cover the stop 34 and the engaging member 25B to prevent dirt or dust from interfering with the operation of the trigger 30 and the blocking mechanism 20.

[0109] Figures 13a to 13c A fifth principal embodiment of the invention is disclosed, which differs from the embodiments described above primarily in that the first member 21A is configured to be integrally formed with the hook plate 14, rather than being a separate member pivotally connected to the hook plate 14. Therefore, in the fifth embodiment, the first member 21A is suitably shaped as a steering knuckle on the hook plate 14 (but optionally also formed in another shape), and wherein in the blocking position (see...) Figure 13c The first contact portion 23A is the part of the first component 21A that contacts the second contact portion 24A.

[0110] The second member 22A is suitably configured as an elongated member attached to the coupler head, and wherein a second contact portion 24A is disposed on a pivotable engaging member 25A, which is pivotally positioned to reach a blocking position, wherein the second contact portion 24A remains abutting against the first contact portion 23A. Figure 13a In the figure, the coupler 10 is in the coupled position (although the second coupler is not shown) and the blocking mechanism 20 is not engaged. Figure 13b This shows that the hook plate 14 has pivoted toward the decoupling position and the second contact portion 24A rests against the first member 21A but is not yet in the blocking position. Finally, Figure 13c This shows that the hook plate 14 has been pivoted to the decoupled position and the second contact portion 24A has reached the blocking position abutting against the first contact portion 23A. Suitably, the blocking mechanism 20 includes a biasing device 26A that biases the engaging member 25A toward the blocking position, such that the blocking position is reached once the coupling head is in the decoupled position. Specifically, as... Figure 13b As shown, the first component 21A may include a guide surface 27 that guides the second contact portion 24A to the blocking position.

[0111] The blocking mechanism 20 also includes a control member 40A configured to move the engaging member 25A, in some embodiments only in the direction away from the blocking position, but in other embodiments in both directions. The control member 40A may be implemented as a mechanical component or actuator that, in some embodiments, controls the operation of the engaging member 25A by directly moving it (e.g., by pushing the engaging member 25A near a pivot where it is attached to the second member 22). In other embodiments, the control member 40A may alternatively be designed to remotely control the engaging member 25A, for example, as an electromagnet configured to pivot the engaging member 25A from the blocking position upon engagement. The control member 40A may be designed and operated with reference to the mechanical components or actuators of any other embodiment as described above.

[0112] When the blocking mechanism 20 is operable automatically as described above in conjunction with various embodiments of the invention, this is suitably achieved by the blocking mechanism 20 being configured to engage or disengage when a criterion is met. The criterion may be a parameter of the coupler or a railway vehicle or train on which a coupler is disposed, such as its speed. Thus, the blocking mechanism 20 can automatically engage when coupling is impossible or undesirable due to the train traveling at high speed. Alternatively, the criterion may be a parameter of the position of the railway vehicle or train, such as whether its position is at a suitable station or another area for coupling, or whether its position is outside such a station or area. Thus, the blocking mechanism 20 can automatically engage when the train is outside an area suitable for coupling. In yet another alternative, the criterion may be any other parameter affecting the suitability of coupling, such as the presence of another coupler that may couple, weather conditions that are desirable or undesirable for coupling, or the state of the coupler, such that coupling can be prevented if coupler damage would result in unsuitable coupling. Additionally, any other parameters affecting operation may form such a criterion. In some embodiments, multiple criteria may also be used.

[0113] To automate the operation of the blocking mechanism 20, a control unit (not shown) may be provided and operatively connected to the blocking mechanism 20, such that the blocking mechanism 20 can engage or disengage in response to a command from the control unit. The control unit may be located in a coupler, in a railway vehicle or train on which the coupler is mounted, or in any remote location. Operatively connecting the control unit to the blocking mechanism 20 may include transmitting signals from the control unit to the blocking mechanism 20, wherein an actuator (not shown) may function to engage or disengage the blocking mechanism 20. It may also include transmitting commands from the control unit by means of a pneumatic connection, a mechanical connection, or any other suitable connection. Parameters used as standards may be measured or detected by at least one sensor and transmitted to the control unit, where processing circuitry is provided to generate engagement or disengagement commands based at least in part on the measured or detected parameters. In some embodiments, the control unit may alternatively include processing circuitry distributed in more than one location and / or communicating with at least one remote processing circuit.

[0114] In cases where the blocking mechanism 20 is remotely operable as described above, this can be achieved via a mechanical, electrical, or pneumatic connection from a remote location (such as the interior of a train on which the coupler is mounted) to the blocking mechanism 20 in the coupler 10. Suitably, at least one actuator is disposed in the blocking mechanism 20 to operate the blocking mechanism 20 in response to a command received via the connection. The command may be in the form of mechanical force, an electrical signal, pressurized air supplied in the pneumatic connection, or any other suitable command or combination of commands.

[0115] Coupler 10 also suitably includes a decoupling mechanism (not shown) for decoupling mechanical coupler 18, and optionally includes an electrical coupler, a pneumatic coupler, or any other type of coupler connecting coupler 10 to a similar coupler. The decoupling mechanism may include a decoupling cylinder having a cylinder rod arranged to press against hook plate 14 to force hook plate 14 to rotate and thereby cause decoupling. In some embodiments, this can be achieved by a decoupling cylinder having a cylinder rod arranged to press against a portion of hook plate 14, preferably against a coupler steering knuckle formed on or extending from hook plate 14. Alternatively, the decoupling mechanism may include a rod connected to hook plate 14 such that pushing or pulling the rod causes hook plate 14 to rotate, thereby achieving decoupling of the mechanical coupler. Suitably, the decoupling mechanism is separated from the blocking mechanism 20 such that any feature of the blocking mechanism 20 does not form part of the decoupling mechanism. This is advantageous because it allows the decoupling mechanism and the blocking mechanism 20 to operate side-by-side without interfering with each other. Using separate handles, for example, for decoupling and blocking mechanisms, is also convenient because it makes the operation of the mechanisms easier and allows for the repair or replacement of one mechanism without requiring modification of the other.

[0116] The present invention also includes a method for operating a coupler for railway vehicles to engage the blocking mechanism 20 as described above. The method specifically includes providing a coupler 10 according to any embodiment of the invention, setting the coupler 10 in a decoupled state, and engaging the blocking mechanism 20 to prevent coupling of the mechanical coupler 18 of the coupler 10.

[0117] Suitable, the method may also include disengaging the blocking mechanism 20 from the blocking position, thereby enabling coupling of the mechanical coupler 18.

[0118] The method according to the invention may also include performing or enabling any features disclosed herein when describing the coupler of the invention.

[0119] In all embodiments, the blocking mechanism is not pneumatically controlled. The coupler preferably includes a pneumatic tube, i.e., a tube for compressed air or gas. The pneumatic tube is preferably a flow-blocking tube; in other words, the brakes on the train connected to the coupler are pneumatically controlled. The blocking mechanism is independent of, separate from, or not connected to, the pneumatic tube. Therefore, the pneumatic system for the brakes is independent of the blocking mechanism, and because the blocking mechanism does not use air or gas from the flow-blocking tube, the train's braking system can be more reliable.

[0120] It should be noted that the features from the various embodiments described herein can be freely combined unless explicitly stated that such combination is inappropriate.

Claims

1. A coupler for coupling a rail vehicle to a similar coupler of another rail vehicle, said coupler (10) comprising: - A coupler head (11) housing a mechanical coupler (18) including a hook plate (14) pivotally mounted in the coupler head (11), the mechanical coupler (18) further including a shaft (15) and a recess (16), the shaft being mounted on a first end (141) of the hook plate (14), the recess being disposed on a second end (142) of the hook plate (14) for receiving a shaft from a second coupler, such that rotation of the hook plate (14) causes mechanical coupling. -A blocking mechanism (20) is used to prevent the mechanical coupler from coupling. The blocking mechanism (20) includes a first member having a first contact portion connected to the hook plate (14), and the blocking mechanism (20) further includes a second member having a second contact portion connected to the coupler head (11), wherein the first contact portion and the second contact portion are configured to contact each other in a blocking position such that the first member is prevented from moving relative to the second member, thereby blocking the rotation of the hook plate (14) of the mechanical coupler (18).

2. The coupler according to claim 1, wherein the first member is pivotally connected to the hook plate (14) at an attachment point (A) between the first end (141) and the second end (142) of the hook plate (14) arranged in a circumferential direction, such that rotation of the hook plate (14) causes the first member to move in a lateral direction perpendicular to the longitudinal direction along the coupler (10), and such movement of the first member in the lateral direction causes rotation of the hook plate (14).

3. The coupler of claim 2, wherein the first contact portion includes a notch having a first blocking surface (23'), and wherein the second contact portion is disposed on a connecting member of the second member, the connecting member being configured to enter the notch such that the second contact portion contacts the first blocking surface (23') to prevent the first member from moving relative to the connecting member of the second member.

4. The coupler of claim 3, wherein the blocking mechanism (20) further comprises a control member (40) configured to move the engaging member into the blocking position.

5. The coupler of claim 1, wherein the blocking mechanism (20) further comprises a biasing device (26) configured to bias the engaging member toward the first member in the blocking position.

6. The coupler according to claim 4, wherein the blocking mechanism (20) further includes a handle (41) for operating the control member (40), the handle being accessible from one side of the coupler head (11), and the handle (41) being configured to move along a path at least partially in the lateral direction for moving the second member to the blocking position.

7. The coupler according to claim 1 further includes a trigger (30) for triggering movement of the first member when the blocking mechanism (20) is not in the blocking position.

8. The coupler of claim 7, wherein the trigger (30) is configured to cause the first member (21) to move in the trigger direction, and wherein the second contact portion is configured to abut against the first contact portion in the blocking position to prevent the first member from moving in the trigger direction.

9. The coupler of claim 2 further includes a trigger (30) having a trigger member (36) and a connecting member (32), the connecting member being configured to slidably connect the trigger member (36) to the coupler head (11) such that the trigger member (36) is slidable in a trigger direction (D) between a non-starting position and a starting position, wherein the second member of the blocking mechanism (20) is connected to the trigger (30) such that movement of the trigger member (36) causes a corresponding movement of the second member, and wherein the blocking mechanism (20) further includes an engagement member configured to hold the blocking mechanism (20) in the blocking position by preventing the trigger member (36) from moving from the starting position.

10. A coupler for coupling a rail vehicle to a similar coupler of another rail vehicle, said coupler (10) comprising: - A coupler head (11) housing a mechanical coupler (18) including a hook plate (14) pivotally mounted in the coupler head (11), the mechanical coupler (18) further including a shaft (15) and a recess (16), the shaft being mounted on a first end (141) of the hook plate (14), the recess being disposed on a second end (142) of the hook plate (14) for receiving a shaft from a second coupler, such that rotation of the hook plate (14) causes mechanical coupling. -A blocking mechanism (20) is used to prevent the mechanical coupler from coupling. The blocking mechanism (20) includes a first member having a first contact portion integral with the hook plate (14), and the blocking mechanism (20) further includes a second member having a second contact portion connected to the coupler head (11), and wherein the first contact portion and the second contact portion are configured to contact each other in a blocking position such that the first member is prevented from moving relative to the second member, thereby blocking the rotation of the hook plate (14) of the mechanical coupler (18).

11. The coupler of claim 1, wherein the hook plate (14) is pivotally mounted in the coupler head (11) on a hook plate pivot (12), the hook plate pivot including a pin (12A) fixed relative to the coupler head (11), and wherein the coupler further includes a spring (13) arranged to bias the hook plate (14) in the direction of rotation such that the hook plate (14) is pushed toward a position where the shaft (15) extends from the coupler head (11).

12. A method for operating a coupler on a railway vehicle, the method comprising: - Provide a coupler (10) according to any one of claims 1 to 11. - Set the coupler (10) to a decoupled state, and - Engage the blocking mechanism (20) to prevent the mechanical coupler (18) of the coupler (10) from coupling.

13. The method of claim 12, further comprising: - Disengage the blocking mechanism (20) from the blocking position, thereby enabling the mechanical coupler (18) of the coupler (10) to couple.

Images