Auxiliary coupling device for transition coupler, rail vehicle transition coupler and rail vehicle

Abstract

The present invention provides an auxiliary coupling device for a transition hook, a rail vehicle transition hook and a rail vehicle. The auxiliary coupling device for the transition hook includes: a rotating hook assembly, which includes a column and a plurality of auxiliary hooks arranged along the circumference of the column, and the auxiliary hook is used to hook the front end hook of the rail vehicle; a support, which is used to fix the auxiliary coupling device on the transition hook; a rotating shaft, which is partially positioned in the inner cavity of the support and includes an outer protruding portion extending axially upward from the inner cavity of the support, wherein the rotating shaft is separately arranged relative to the rotating hook assembly; a connecting column, which is located between the support and the rotating hook assembly and is installed on the outer protruding portion; and a detachable clamping member, which is used to clamp and fix the rotating hook assembly on the connecting column. The rotating hook assembly of the auxiliary coupling device of the present invention is very convenient to replace.

Description

Technical Field

[0001] The present application relates to the technical field of rail vehicle couplers, and in particular to a device for assisting in achieving the connection between a transition coupler and a front end coupler of an EMU. Background Art

[0002] Transition couplers are usually used to connect the transported vehicle and the power locomotive. They are important devices for vehicle shunting, train return and rescue. In the field of high-speed EMUs, intercity EMUs and urban rail vehicles, transition couplers with close-coupled automatic couplers are widely used.

[0003] At present, due to the different technical configurations adopted by domestic EMUs, the front-end automatic couplers equipped on various models are not uniform in model, and the shapes of their connecting panels are also different, which leads to great limitations in the use of transition couplers.

[0004] In one type of solution, the transition hook is equipped with different auxiliary connecting devices so that it can be rotated to switch the auxiliary hook. For example, in the auxiliary connecting device for the transition hook disclosed in patent application CN 104129401A, the hook and the positioning cylinder are integrally formed, and the positioning cylinder has a plane cut out below the hook, and the distance from the plane to the center of the cylinder is less than the radius of the cylinder. An elastic spring is fixed on the side of the auxiliary hook mounting seat, and the raised part of its head is pressed against the positioning cylinder. When the pressing part moves from the plane of the positioning cylinder to the cylindrical surface, the spring needs to overcome the elastic force and lean back. Therefore, unless interfered by external force, the positioning cylinder will be fixed on the plane and will not rotate easily. Each type of auxiliary hook corresponds to the positioning plane one by one, thereby realizing the positioning of the auxiliary hook.

[0005] As an external cantilever installation structure, the locking device in this scheme has the following shortcomings: first, the locking spring is pressed against the connecting column only by the elastic force of one end. Due to the structural limitation of the cantilever installation, the locking elastic force of the locking spring that can actually be used is relatively small, and with the increase of the number of uses or time, the locking spring is more likely to produce outward deformation, and the reliability of its locking and positioning will become worse and worse, and the reliability and safety of the auxiliary hook device cannot be ensured. Second, the locking device composed of the locking spring and the fastener is arranged outside the support and the connecting column, which is easily affected and disturbed by the external environment, thereby affecting its locking and positioning effect, and it also needs to occupy a relatively large space, and the structure is not compact; third, the manufacturing process of the spring is complicated and the assembly precision requirements are high. The spring needs to use a material with high elasticity and undergo heat treatment, and the distance between the spring and the positioning cylinder is too close or too far, which will affect the locking and positioning effect.

[0006] In addition, the disadvantage of the integrally designed auxiliary hook adopted in this scheme is that when the auxiliary hook is damaged or needs to be replaced with other types of hooks to adapt to different front-end couplers, it is necessary to dismantle the entire set of auxiliary hook devices, replace the auxiliary hooks on it as a whole, and then reassemble, debug and position the device. Summary of the invention

[0007] In view of this, the present application provides an auxiliary coupling device for a transition coupler and a rail vehicle transition coupler, thereby effectively solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0008] According to one aspect of the present invention, there is provided an auxiliary coupling device for a transitional vehicle coupler, comprising:

[0009] A rotary hook assembly, comprising a column and a plurality of auxiliary hooks arranged along the circumference of the column, wherein the auxiliary hooks are used to hook the front end hook of a rail vehicle;

[0010] A support, used for fixing the auxiliary coupling device on the transition coupler;

[0011] a rotating shaft, which is partially positioned in the inner cavity of the support and includes an outer protruding portion extending axially upward from the inner cavity of the support, wherein the rotating shaft is separately arranged relative to the rotating hook assembly;

[0012] a connecting post located between the support and the swivel hook assembly and mounted on the outer extension; and

[0013] A detachable pressing piece is used to press and fix the rotating hook assembly on the connecting column.

[0014] Optionally, the connecting column is an internally threaded column, and the externally protruding portion of the rotating shaft is threadedly connected to the internally threaded column. The rotating shaft and the rotating hook assembly are pressed against each other and detachably fixed together via the upper end of the internally threaded column. When the rotating hook assembly rotates in the circumferential direction, the rotating hook assembly and the rotating shaft are linked via the internally threaded column.

[0015] Optionally, the first end of the rotating shaft corresponding to the protruding part is threadedly connected to the lower end of the internally threaded column; the clamping piece is a clamping bolt; wherein the column of the rotating hook assembly is provided with a connecting hole extending axially therethrough, and the clamping bolt passes through the connecting hole of the column and is threadedly connected to the upper end of the internally threaded column.

[0016] Optionally, when the first end of the rotating shaft and the clamping bolt are both threadedly fastened to the internal threaded column, there is a gap in the axial direction between the clamping bolt and the first end of the rotating shaft.

[0017] Optionally, the column of the rotating hook assembly is provided with a connecting hole extending axially therethrough, and a thread is provided on the first end of the rotating shaft corresponding to the protruding portion, the protruding portion extends through the connecting column and the connecting hole of the column and its first end extends upward to the outside; the clamping piece is a clamping nut, which is threadedly connected to the first end of the rotating shaft through the clamping nut to achieve the purpose of clamping and fixing the rotating hook assembly on the connecting column.

[0018] Optionally, the connecting column is an internally threaded column, and when the internally threaded column is threadedly fixed on the rotating shaft, the lower end of the internally threaded column abuts against the upper step surface of the rotating shaft and basically does not abut against the upper surface of the support.

[0019] Optionally, the support is provided with a first through hole that penetrates the support in the axial direction, wherein the first end of the rotating shaft penetrates the first through hole; the support is also provided with a second through hole that extends in the radial direction of the support and connects the first through hole with the outer side of the support;

[0020] The rotating shaft comprises a shaft body and a positioning groove arranged along the circumference of the shaft body, and the positioning groove is arranged corresponding to the second through hole; the shaft body is inserted into the first through hole of the support and connected to the column of the rotating hook assembly, so that the rotating hook assembly is linked with the rotating shaft;

[0021] The auxiliary coupling device further includes: a locking mechanism, which is arranged in the second through hole of the support and keeps pressing against the rotating shaft; wherein the locking mechanism has a base fixedly connected to the second through hole and a positioning portion capable of reciprocating in a radial direction relative to the base;

[0022] Among them, when in the locked position, the positioning part presses against the positioning groove; when in the unlocked position, the positioning part presses against the shaft body; when switching from the locked position to the unlocked position, the rotating hook assembly is exerted with a force not less than a preset value, and the rotating shaft linked thereto causes the positioning part of the locking mechanism to be pushed out from the positioning groove to press against the shaft body.

[0023] Optionally, the base includes a sleeve with an opening at one end; and the positioning portion includes an elastic element and a locking member disposed in the sleeve; wherein the elastic element presses against the locking member so that the locking member is subjected to a force moving toward the opening of the sleeve to press against the shaft body; when in the locked position, the locking member presses against the positioning groove; and when in the unlocked position, the locking member presses against the shaft body.

[0024] Optionally, the sleeve has an external thread, and the second through hole has an internal thread; the sleeve and the second through hole are connected via threads.

[0025] Optionally, the base includes a fastening bolt; the positioning portion includes an elastic element and a locking piece, and the second through hole has an internal thread; wherein the fastening bolt and the second through hole are threadedly connected, and the elastic element presses the fastening bolt and the locking piece respectively to make the locking piece move toward the shaft body; when in the locked position, the locking piece presses the positioning groove; when in the unlocked position, the locking piece presses the shaft body.

[0026] Optionally, the elastic element is a coil spring or a butterfly spring.

[0027] Optionally, the elastic element is a non-metallic elastic element.

[0028] Optionally, the locking member is a ball or a cylinder with a wedge surface provided at one end facing the positioning groove.

[0029] Optionally, the column has a plurality of auxiliary hook setting points at preset angle intervals along the circumferential direction, and the number of the auxiliary hooks corresponds to or is less than the number of the auxiliary hook setting points.

[0030] Optionally, the preset angle is 90° or 180°.

[0031] Optionally, the number of the positioning slots corresponds to the number of the auxiliary hook setting points.

[0032] Optionally, when multiple positioning grooves are provided on the rotating shaft and multiple second through holes are provided on the support, the multiple positioning grooves correspond to the multiple second through holes in sequence, the locking mechanism is pressed into one of the multiple positioning grooves, and one of the multiple auxiliary hooks in the rotating hook assembly is in the hanging position.

[0033] According to another aspect of the present invention, there is provided a rail vehicle transition coupler, comprising: a transition coupler body and any one of the above-mentioned auxiliary coupling devices for transition couplers, wherein the support of the auxiliary coupling device for transition couplers is welded to the transition coupler body.

[0034] According to another aspect of the present invention, there is provided a rail vehicle, comprising: the rail vehicle transition coupler described above.

[0035] The auxiliary coupling device for transition hook, rail vehicle transition hook and rail vehicle of the present invention, by introducing connecting columns and clamping pieces, can detachably fix and connect the rotating hook assembly that is separately arranged relative to the rotating shaft. When the rotating hook assembly rotates in the circumferential direction, not only can the rotating hook assembly be linked with the rotating shaft, but the replacement of the rotating hook assembly is also very convenient. For example, different types of rotating hook assemblies can be replaced and used, and different types of couplers can be conveniently used, which greatly expands the scope of application of the auxiliary coupling device for hook and the transition coupler of rail vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional schematic diagram of an embodiment of an auxiliary coupling device for a transition coupler of the present application.

[0037] Figure 2 It is a schematic cross-sectional view along a vertical plane of an embodiment of an auxiliary coupling device for a transition coupler of the present application.

[0038] Figure 3 It is a cross-sectional schematic diagram along a horizontal plane of an embodiment of an auxiliary coupling device for a transition coupler of the present application.

[0039] Figure 4 It is a three-dimensional schematic diagram of an embodiment of a rail vehicle transition coupler of the present application.

[0040] Figure 5 1 is a schematic diagram of an embodiment of a rail vehicle transition coupler of the present application, wherein the auxiliary hook 112a is in a hooking position.

[0041] Figure 6 It is a schematic diagram of an embodiment of the rail vehicle transition coupler of the present application, wherein the auxiliary hook 112b is in a hooking position.

[0042] Figure 7 It is a schematic cross-sectional view along a vertical plane of another embodiment of the auxiliary coupling device for a transition coupler of the present application.

[0043] Description of Reference Numerals

[0044] 100、700 Auxiliary coupling device for transition coupler 110 Swivel hook assembly 111 Column 112a, 112b Auxiliary hook 113 Connection hole 120 Support 121 First through hole 122a, 122b Second through hole 130 Shaft 131 Axis 132 Positioning slot 140 Locking mechanism 141 Sleeve 142 Elastic element 143 Locking element (ball) 150 Internal threaded column 160 Tightening bolt 200 Rail vehicle transition coupler 210 Transition coupler body 139 First end of the shaft 138 Compression nut DETAILED DESCRIPTION

[0045] According to the concept of this application, Figures 1 to 3 An embodiment of an auxiliary coupling device for a transitional vehicle hook is described. The auxiliary coupling device 100 for a transitional vehicle hook comprises a rotating hook assembly 110, an internal threaded column 150 and a support 120 arranged in sequence from top to bottom, and the auxiliary coupling device 100 also comprises a rotating shaft 130 and a locking mechanism 140. First, the entire auxiliary coupling device 100 for a transitional vehicle hook is welded to the hook body of a transitional vehicle hook 200 through the support 120, and then the rotating shaft is locked and unlocked through the locking mechanism 140 to control its movement or locking, and then the auxiliary hook is switched between the hooking position and the non-hooking position and reliably locked and conveniently unlocked at the hooking position through the movement transmitted by the rotating shaft.

[0046] Specifically, the rotating hook assembly 110 has a column 111 and a plurality of auxiliary hooks 112a and 112b arranged along the circumference of the column 111. The auxiliary hooks 112a and 112b have different models or specifications, so as to be used for hooking different models of hooks at the front end of the rail vehicle. The support 120 includes a first through hole 121 that axially penetrates the support 120 and a plurality of second through holes 122a and 122b that extend radially from the support 120 and connect the first through hole 121 with the outside of the support 120, so that corresponding parts can be inserted into these holes. The rotating shaft 130 includes a shaft body 131 and a positioning groove 132 arranged along the circumference of the shaft body 131, and the positioning groove 132 is arranged corresponding to the second through holes 122a and 122b. In addition, the shaft 131 of the rotating shaft 130 is inserted into the first through hole 121 of the support 120, and can be directly or indirectly connected to the column 111 of the rotating hook assembly, so that the rotating hook assembly 110 and the rotating shaft 130 are linked, that is, the rotating shaft 130 can be rotated by screwing the rotating hook assembly 110, and the rotating hook assembly 110 can be locked correspondingly by locking the rotating shaft 130.

[0047] Optionally, the first through hole 121 may be configured as a T-shaped hole, thereby making it easy to assemble the rotating shaft relative to the support without hindering the relative rotation between the two.

[0048] The locking mechanism 140 mentioned above is disposed in the second through holes 122a, 122b of the support 120 and can keep pressing the rotating shaft 130. The second through holes 122a, 122b can be configured to have an internal thread structure, thereby making it easy to assemble the locking mechanism 140 relative to the second through holes 122a, 122b.

[0049] Specifically, the locking mechanism 140 has a base fixedly connected to the second through holes 122a, 122b and a positioning portion capable of radially reciprocating relative to the base. In the locked position, the positioning portion of the locking mechanism 140 extends radially into the positioning groove 132; in the unlocked position, the positioning portion extends radially into the shaft 131 of the rotating shaft 130; when switching from the locked position to the unlocked position, the rotating hook assembly 110 is rotated, and a force not less than a preset value is applied to the rotating shaft 130, so that the positioning portion is withdrawn radially from the positioning groove 132 until it presses against the shaft 131 of the rotating shaft 130.

[0050] Under this arrangement, through the configuration of the locking mechanism 140 and the rotating shaft 130, when the auxiliary hooks 112a, 112b are rotated to the use position, the positioning part enters the positioning groove 132 to lock the rotating shaft 130, and then locks the entire rotating hook assembly 110, so that the auxiliary hooks 112a, 112b can be hung in a relatively stable state, and it is convenient to connect the transition hook. If it is necessary to switch to other suitable types of auxiliary hooks 112a, 112b or there is no need to use any auxiliary hooks 112a, 112b temporarily, a certain external force can be applied to push the rotating hook assembly 110, which is equivalent to the rotating shaft 130 linked with the rotating hook assembly 110 being applied with external force. When the external force exceeds the elastic locking force of the preset value, that is, it is large enough to push the positioning part out of the positioning groove 132, the rotating hook assembly and the rotating shaft 130 will continue to rotate, and the rotating hook assembly and the rotating shaft are both in the unlocked state until the rotating shaft 130 rotates to the locking mechanism 140 to dock with another positioning groove 132, and then it re-enters the locked state.

[0051] thus, Figure 1 and Figure 2 The auxiliary coupling device 100 for the transitional vehicle hook provided by the example has multiple auxiliary hooks 112a, 112b, and is reliable in locking and convenient in switching, and its components are relatively simple in manufacturing process, easy to obtain, and convenient to maintain. The entire positioning mechanism is hidden in the auxiliary hook mounting seat, with a compact structure, and the locking and positioning will not be disturbed and affected by the external environment and facilities, and the locking is more reliable, which improves the safety and accuracy of the manual auxiliary hooking operation of the transitional vehicle hook, and has significant dust and rust prevention effects.

[0052] In the aforementioned embodiments, it is mentioned that the positioning grooves and the through holes are arranged correspondingly, which is intended to focus on the matching positional relationship between the two, rather than limiting the setting requirements on the number of them. Specifically, on the one hand, the design function of the positioning groove is to provide corresponding locking or vacant positions for the locking mechanism. If a total of N locking positions and vacant positions need to be set, N groups of positioning grooves should be provided accordingly. Among them, the positioning grooves in the form of groups can provide a more stable positioning effect. In the case where the positioning effect requirements are relatively low, each group of positioning grooves can include at least one positioning groove. On the other hand, the design function of the second through hole is to provide a layout space for the locking mechanism. If M locking mechanisms need to be arranged, M second through holes should be provided accordingly. In addition, the spacing angle between the positioning grooves arranged on the rotating shaft needs to have a corresponding relationship with the positioning angle of the second through hole, so that when the rotating shaft rotates, when the second through holes respectively correspond to a group of positioning grooves on the rotating shaft, the locking mechanism can cooperate with the positioning grooves, thereby rotating the corresponding auxiliary hook to the hanging position or the idle position; thereafter, if the rotating shaft continues to be rotated until the second through holes respectively correspond to another group of positioning grooves on the rotating shaft, the locking mechanism can again cooperate with the positioning grooves, thereby rotating the corresponding other auxiliary hook to the hanging position or the idle position.

[0053] Of course, in order to provide a better positioning effect, the number of locking mechanisms may correspond to the number of positioning grooves in each group of positioning grooves, but this is not a necessary condition.

[0054] Under the guidance of the above principles, as an example, when an auxiliary hook is provided, two second through holes spaced 90 degrees apart from each other can be provided on the support, and a positioning groove can be provided on the shaft body of the rotating shaft accordingly. As another example, one second through hole can be provided on the support, and two positioning grooves spaced 90 degrees apart from each other can be provided on the shaft body of the rotating shaft accordingly. More specifically, in combination with the present application, Figure 2 and Figure 3 Two second through holes spaced 180 degrees apart from each other may be provided on the support, and four positioning grooves spaced 90 degrees apart from each other may be correspondingly provided on the shaft body of the rotating shaft.

[0055] In addition, based on the aforementioned embodiment, the components of the auxiliary coupling device 100 for the transitional coupler or the connection relationship therebetween may be modified, or other components may be added for other purposes, as will be exemplified below with reference to the accompanying drawings.

[0056] For example, as a specific implementation of the locking mechanism, a standard part spring ball plug can be used. The base of the spring ball plug may include a sleeve 141 with an opening at one end, and the positioning part of the spring ball plug includes an elastic element 142 and a ball 143 placed in the sleeve 141. As a fastening method between the two, the sleeve 141 has an external thread, and the second through holes 122a and 122b have internal threads; the sleeve 141 and the second through holes 122a and 122b are connected by threads. In addition, the elastic element 142 can press the ball 143, so that the ball 143 bears the force of moving toward the opening of the sleeve 141 to press the shaft body 131. Specifically, in the locked position, the elastic element 142 presses the ball 143 into the positioning groove 132, and the rotating shaft and the rotating hook assembly are in a relatively stable state, that is, the auxiliary hooks are switched, and one of the auxiliary hooks can be used for hanging, or all the auxiliary hooks are in an empty state. In the non-locking position, the elastic element 142 presses the ball 143 against the shaft 131. At this time, the shaft and the rotating hook assembly can rotate relative to the locking mechanism until the locking mechanism docks with the next positioning groove 132 on the shaft to perform a new locking action, which also means that a new switch between adjacent auxiliary hooks is completed. Under this arrangement, the circumferential positioning of the shaft is achieved only by using a plurality of spring ball plugs in the form of standard parts, which effectively simplifies the structure and reduces the manufacturing and maintenance costs; and the most critical locking mechanism is all built-in, which is not only compact in structure, but also the locking positioning is not disturbed and affected by the external environment and facilities, which improves the accuracy and safety of the manual auxiliary hooking operation of the transition coupler, and has good dust and rust prevention effects, and thus has higher reliability.

[0057] In addition, although not shown in the figure, as an alternative embodiment of the locking mechanism, its base may include a fastening bolt; and its positioning portion may include an elastic element and a locking member. Wherein, the second through hole should also have an internal thread correspondingly, thereby realizing that the fastening bolt and the second through hole are connected by a thread. In addition, the elastic element presses the fastening bolt and the locking member respectively, so that the locking member has a force to move toward the shaft body to press against the shaft body. Under this arrangement, when the locking mechanism is in the locking position, the locking member presses against the positioning groove; when the locking mechanism is in the non-locking position, the locking member presses against the shaft body.

[0058] Alternatively, the ball used in the above-mentioned embodiment can be replaced by a cylinder with a wedge surface or other similar locking member, wherein the wedge surface should be provided at one end of the cylinder facing the positioning groove, thereby also achieving cooperation with the positioning groove. In addition, specifically, the elastic element can be a coil spring, a butterfly spring or other similar elastic parts such as a non-metallic elastic member to achieve the function of unlocking or locking. Therefore, based on the above disclosure, in addition to the combination structure of the ball and the coil spring, the locking mechanism used here also has a combination structure of a wedge-shaped cylinder and a butterfly spring, a combination structure of a wedge-shaped cylinder and a coil spring, a combination structure of a ball and a butterfly spring, etc.

[0059] Similarly, the locking mechanism can be implemented in many ways, as long as it includes the base and the positioning portion as described above, wherein the base mainly provides a fixed connection relationship with the second through hole (i.e., the support), and the positioning portion at least has a mechanical structure that can reciprocate back and forth in a fixed direction, which will not be listed one by one here.

[0060] In one embodiment, as a solution to promote the efficiency of parts assembly and replacement, the auxiliary coupling device 100 for the transitional vehicle coupler may further include an internal thread column 150. The internal thread column 150 is axially arranged between the rotating hook assembly 110 and the support 120. The first end (e.g., the upper end) of the shaft body 131 of the rotating shaft 130 protrudes from the first through hole of the support 120, the upper end of the shaft body 131 has an external thread corresponding to the internal thread of the internal thread column 150, the upper end of the shaft body 131 is screwed to the lower end of the internal thread column 150, and is connected to the column 111 of the rotating hook assembly 110 via the internal thread column 150. In this arrangement, the internal thread column 150 thus becomes a connecting hub between the shaft body 131 of the rotating shaft 130 and the column 111 of the rotating hook assembly 110, so that the rotating hook assembly 110 and the rotating shaft 130 are linked via the internal thread column 150.

[0061] Specifically, Figure 2 As shown, when the first end of the rotating shaft 130 is screwed to the lower end of the internal threaded column 150, the lower end of the internal threaded column 150 abuts against the upper step surface of the rotating shaft 130 and basically does not abut against the upper surface of the support 120. In this way, it is ensured that when the rotating hook assembly 110 and the rotating shaft 130 are linked via the internal threaded column 150, they can rotate relative to the support 120 with a certain degree of freedom.

[0062] It will be understood that the rotating hook assembly 110 and the rotating shaft 130 of the transitional vehicle coupling auxiliary coupling device 100 can also be directly connected, for example, an internal threaded hole is provided in the column 111, and an external thread is provided on the outer peripheral surface of the shaft body, and the two are connected by a threaded connection.

[0063] Furthermore, as one of the solutions to improve the applicability of the rotating hook assembly, it can be set as a rotating hook assembly that can be quickly assembled and disassembled. For example, the auxiliary coupling device 100 for the transitional coupler may also include a clamping bolt 160. In this case, the column 111 of the rotating hook assembly 110 will be provided with a corresponding connecting hole 113 that penetrates along the axial direction. At this time, the clamping bolt 160 will be connected to the internal threaded column 150 via the connecting hole 113 of the column 111, that is, the connection between the rotating hook assembly 110 and the internal threaded column 150 is realized by the clamping bolt 160. At this time, even if the multiple auxiliary hooks on the rotating hook assembly do not meet the corresponding specifications of the transitional coupler, the entire set of rotating hook assemblies can be replaced by unscrewing the clamping bolt 160 without disassembling other parts such as the rotating shaft, and the disassembly and installation operations are very convenient.

[0064] It should be noted that if Figure 2 As shown, when the upper ends of the clamping bolt 160 and the rotating shaft 131 are both threadedly connected to the internal threaded column 150, there is a gap between the clamping bolt 160 and the upper ends of the rotating shaft 131 in the axial direction to prevent them from abutting against each other. The size of the gap can be set by the dimensions of the clamping bolt 160, the convex portion of the rotating shaft 131 and the internal threaded column 150.

[0065] It will be understood that the structure of the above example not only makes it very convenient to replace the rotating hook assembly 110, but also, on the one hand, when fixedly installed, the circumferential positions of the multiple auxiliary hooks 112 of the rotating hook assembly 110 are easy to adjust. For example, the circumferential positions of the auxiliary hooks 112 are adjusted and set in advance before tightening the clamping bolts 160, and the rotating hook assembly 110 and the internal threaded column 150 are pressed against each other and provide a stable support surface for the rotating hook assembly 110. When the rotating hook assembly 110 rotates, the multiple auxiliary hooks 112 are not easily misplaced in the circumferential direction. On the other hand, the internal threaded column 150 and the clamping bolts 160 can well couple and fix the rotating hook assembly 110 and the rotating shaft 130 to ensure the reliability of the linkage between them.

[0066] Figure 7 FIG. 1 is a schematic cross-sectional view of another embodiment of the auxiliary coupling device for the transitional vehicle coupler of the present application along a vertical plane. Figure 7In the auxiliary connecting device 700 of the replacement embodiment, the rotating shaft 131 is integrally arranged and relatively longer, and its first end 139 (i.e., the upper end of the protruding portion) extends upward and passes through the connecting hole 113 in the column 111 of the rotating hook assembly 110, and protrudes to the outside of the rotating hook assembly 110, and the clamping nut 138 is arranged corresponding to the first end 139, wherein the first end 139 is provided with an external thread, and the clamping nut 138 is provided with a corresponding internal thread. The clamping nut 138 is screwed with the first end 139 of the rotating shaft 131, so that the rotating hook assembly 110 and the internal thread column 150 are pressed against each other and can be fixedly connected together. When the type of the rotating hook assembly 110 needs to be replaced, the clamping nut 138 can be disassembled, and the overall operation is convenient.

[0067] It will be understood that the above mainly describes the auxiliary attachment device 700 relative to Figure 2 The main changes of the auxiliary coupling device 100 in the embodiment are pointed out, and other components not involved have basically the same structure or configuration, which will not be repeated here. In addition, the auxiliary coupling device 700 of the above embodiment has basically the same effect as the auxiliary coupling device 100.

[0068] It should be noted that, although the internal thread column 150 in the above example is an implementation scenario of the connecting column of the auxiliary connecting device 100 or 700 of an embodiment of the present invention, in other replacement embodiments such as the auxiliary connecting device 700, the connecting column can also be set as a columnar body without internal threads, which is clamped and fixed on the rotating shaft 131 by the clamping nut 138, and the rotating hook assembly 110 and the connecting column are also clamped and fixed to each other, and a stable support surface is provided for the rotating hook assembly 110, and the connecting column, the clamping nut 138 and the rotating shaft 130 can all rotate synchronously with the rotating hook assembly 110.

[0069] It should be noted that, although the clamping nut or the clamping bolt in the above example is one implementation of the clamping member in one embodiment of the present invention, in other alternative embodiments, other detachable clamping members are also used. Figure 1 and Figure 2As shown, with respect to the rotating hook assembly 110, its column 111 may have a plurality of auxiliary hook setting points at preset angle intervals along the circumferential direction, and it is arranged so that the number of auxiliary hooks 112a, 112b corresponds to or is less than the number of auxiliary hook setting points. When the number of auxiliary hooks 112a, 112b corresponds to the auxiliary hook setting points, that is, a plurality of auxiliary hooks 112a, 112b of different models are arranged around the main body 111 in a spaced manner along the circumferential direction, so as to be used in a variety of different transitional coupler scenarios. When the number of auxiliary hooks 112a, 112b is less than the auxiliary hook setting points, that is, several of the auxiliary hook setting points are in an empty state. At this time, the empty state can be applied to the non-connected working mode of the transitional coupler. As a specific implementation form of this arrangement, the preset angle interval may be 90° or 180°, that is, corresponding to 4, 3 or 2 auxiliary hooks in a fully loaded state, or corresponding to 3, 2 or 1 auxiliary hooks in another state where an empty position is reserved.

[0070] On the other hand, the number of the positioning slots 132 on the rotating shaft 130 can be set to correspond to the number of the auxiliary hook setting points, so that no matter whether the auxiliary hook setting point is set with an auxiliary hook or is empty, it has its own corresponding locking position, so that the corresponding auxiliary hook or the empty state can be selected as needed. It will be understood that in one embodiment, by setting the number of positioning slots 132 relative to the auxiliary hook 112, it can be achieved to reserve at least one or a group of positioning slots 132 for making the auxiliary hook empty (that is, the auxiliary hook is not used to connect the transition hook).

[0071] In the aforementioned embodiments, it is mentioned that the positioning grooves and the auxiliary hook setting points are arranged correspondingly, which is intended to focus on the matching positional relationship and quantitative relationship between the two. Specifically, a plurality of groups of positioning grooves are arranged on the rotating shaft at angles corresponding to the second through holes. When the rotating shaft rotates, when the locking mechanisms in the second through holes on the support correspond to a group of positioning grooves on the rotating shaft, an auxiliary hook setting point is obtained, and an auxiliary hook can be set at this angle, or it can be left vacant. Thereafter, the rotating shaft continues to rotate, and when the locking mechanism in the second through hole corresponds to the next group of positioning grooves on the rotating shaft again, the next auxiliary hook setting point can be obtained.

[0072] In addition, as a specific corresponding relationship between the rotating hook assembly, the rotating shaft, the support and the locking mechanism in the moving state, when the multiple positioning grooves 132 on the rotating shaft 130 correspond to the multiple second through holes 122a, 122b on the support 120 in sequence, the positioning portion of the locking mechanism 140 is pressed into the positioning groove 132, and one of the multiple auxiliary hooks 112a, 112b in the rotating hook assembly 110 is in the installation position.

[0073] In addition, see Figure 4, an embodiment of a transitional coupler for a rail vehicle is also provided herein. The transitional coupler 200 for a rail vehicle comprises: a transitional coupler body 210; and an auxiliary coupling device 100 for a transitional coupler in any of the aforementioned embodiments or any combination thereof. The support 120 of the auxiliary coupling device 100 for a transitional coupler is welded to the transitional coupler body 210. Figure 2 As shown, since the support 120 of the auxiliary coupling device 100 for the transitional coupler is installed at a position where the transitional coupler body 210 is an inclined surface, the Figure 2 The left side of the support shown is different from the right side thereof. The rail vehicle transition coupler arranged in this way can reliably lock the auxiliary hook to be used through the auxiliary coupling device, thereby realizing a stable connection between the transition couplers. In addition, it has multiple auxiliary hooks 112a, 112b and is easy to switch, so that it can match a variety of rail vehicle front end couplers of different specifications, has a wide range of adaptability and is easy to operate.

[0074] Continue to see Figures 5 and 6 , which exemplarily shows two coupling positions of the auxiliary coupling device 100 for the transition coupler installed on the transition coupler 200 of the railway vehicle. Figure 5 The auxiliary hook 112a shown in the figure is in a hooking position and is stably locked there. When switching is required, the rotating hook assembly can be twisted by applying external force, which is then transmitted to the shaft. When the applied external force exceeds the preset value, the bead 143 of the locking mechanism 140 is pushed out from the positioning groove 132 of the shaft until it abuts against the wall of the shaft body of the shaft. The rotating hook assembly can then be easily twisted until the bead 143 of the locking mechanism 140 re-enters the next positioning groove 132 of the shaft, thereby completing the switching of the transitional hook hooking and unhooking states. Figure 6 As shown, at this time, the auxiliary vehicle coupler 112b is placed in another hooking position and stably locked there.

[0075] In addition, although not shown in the figure, according to another aspect of the present application, a rail vehicle embodiment is also provided. The rail vehicle may include the rail vehicle transition coupler in any of the above embodiments or combinations thereof, and thus also has the corresponding technical effects brought by the rail vehicle transition coupler.

[0076] The above examples mainly illustrate the auxiliary coupling device for transition coupler, rail vehicle transition coupler and rail vehicle. Although only some of the embodiments of the present application are described, it should be understood by those skilled in the art that the present application can be implemented in many other forms without departing from its subject matter and scope. Therefore, the examples and embodiments shown are regarded as illustrative rather than restrictive, and the present application may cover various modifications and substitutions without departing from the spirit and scope of the present application as defined in the appended claims.

Claims

1. An auxiliary coupling device for a transitional vehicle coupler, characterized in that: include: A rotary hook assembly, comprising a column and a plurality of auxiliary hooks arranged along the circumference of the column, wherein the auxiliary hooks are used to hook the front end hook of a rail vehicle; A support, used for fixing the auxiliary coupling device on the transition coupler; a rotating shaft, which is partially positioned in the inner cavity of the support and includes an outer protruding portion extending axially upward from the inner cavity of the support, wherein the rotating shaft is separately arranged relative to the rotating hook assembly; a connecting post located between the support and the rotating hook assembly and mounted on the outer protruding portion; as well as A detachable pressing piece is used to press and fix the rotating hook assembly on the connecting column.

2. The auxiliary coupling device for transitional vehicle hook according to claim 1, characterized in that: The connecting column is an internal threaded column, and the externally protruding part of the rotating shaft is threadedly connected to the internal threaded column. The rotating shaft and the rotating hook assembly are pressed against each other and detachably fixedly connected together via the upper end of the internal threaded column. When the rotating hook assembly rotates in the circumferential direction, the rotating hook assembly and the rotating shaft are linked via the internal threaded column.

3. The auxiliary coupling device for transitional vehicle hook according to claim 2, characterized in that: The first end of the rotating shaft corresponding to the protruding part is threadedly connected to the lower end of the internally threaded column; the clamping piece is a clamping bolt; wherein the column of the rotating hook assembly is provided with a connecting hole penetrating along the axial direction, and the clamping bolt penetrates the connecting hole of the column and is threadedly connected to the upper end of the internally threaded column.

4. The auxiliary coupling device for transitional vehicle hook according to claim 3, characterized in that: When the first end of the rotating shaft and the clamping bolt are both threadedly fastened to the internal threaded column, a gap exists between the clamping bolt and the first end of the rotating shaft in the axial direction.

5. The auxiliary coupling device for transitional vehicle hook according to claim 1, characterized in that: The column of the rotating hook assembly is provided with a connecting hole that penetrates axially, and a thread is provided on the first end of the rotating shaft corresponding to the protruding part, and the protruding part penetrates the connecting column and the connecting hole of the column and its first end protrudes upward to the outside; the clamping piece is a clamping nut, which is threadedly connected to the first end of the rotating shaft through the clamping nut to realize the rotating hook assembly being clamped and fixed on the connecting column.

6. The auxiliary coupling device for transitional vehicle hook according to claim 1, characterized in that: The connecting column is an internal thread column. When the internal thread column is threadedly fixed on the rotating shaft, the lower end of the internal thread column abuts against the upper step surface of the rotating shaft and does not abut against the upper surface of the support.

7. The auxiliary coupling device for transitional vehicle hook according to claim 1, characterized in that: The support is provided with a first through hole that penetrates the support in the axial direction, wherein the first end of the rotating shaft penetrates the first through hole; the support is also provided with a second through hole that extends in the radial direction of the support and connects the first through hole with the outer side of the support; The rotating shaft comprises a shaft body and a positioning groove arranged along the circumference of the shaft body, and the positioning groove is arranged corresponding to the second through hole; the shaft body is inserted into the first through hole of the support and connected to the column of the rotating hook assembly, so that the rotating hook assembly is linked with the rotating shaft; The auxiliary coupling device further includes: a locking mechanism, which is arranged in the second through hole of the support and keeps pressing against the rotating shaft; wherein the locking mechanism has a base fixedly connected to the second through hole and a positioning portion capable of reciprocating in a radial direction relative to the base; Among them, when in the locked position, the positioning part presses against the positioning groove; when in the unlocked position, the positioning part presses against the shaft body; when switching from the locked position to the unlocked position, the rotating hook assembly is exerted with a force not less than a preset value, and the rotating shaft linked thereto causes the positioning part of the locking mechanism to be pushed out from the positioning groove to press against the shaft body.

8. The auxiliary coupling device for transitional vehicle hook according to claim 7, characterized in that: The base includes a sleeve with an opening at one end; and the positioning portion includes an elastic element and a locking member disposed in the sleeve; wherein the elastic element presses against the locking member so that the locking member is subjected to a force moving toward the opening of the sleeve to press against the shaft body; when in the locked position, the locking member presses against the positioning groove; and when in the unlocked position, the locking member presses against the shaft body.

9. The auxiliary coupling device for transitional vehicle hook according to claim 8, characterized in that: The sleeve has an external thread, and the second through hole has an internal thread; the sleeve and the second through hole are connected by threads.

10. The auxiliary coupling device for transitional vehicle hook according to claim 7, characterized in that: The base includes a fastening bolt; the positioning portion includes an elastic element and a locking piece, and the second through hole has an internal thread; wherein the fastening bolt and the second through hole are connected by threads, and the elastic element presses the fastening bolt and the locking piece respectively to move the locking piece toward the shaft body; when in the locked position, the locking piece presses the positioning groove; when in the unlocked position, the locking piece presses the shaft body.

11. The auxiliary coupling device for transitional vehicle hook according to claim 10, characterized in that: The elastic element is a coil spring or a butterfly spring.

12. The auxiliary coupling device for a transitional vehicle hook according to any one of claims 8 to 10, characterized in that: The elastic element is a non-metallic elastic element.

13. The auxiliary coupling device for a transition vehicle hook according to any one of claims 8 to 10, characterized in that: The locking member is a ball or a cylinder with a wedge surface arranged at one end facing the positioning groove.

14. The auxiliary coupling device for transitional vehicle hook according to any one of claims 1 to 10, characterized in that: The column has a plurality of auxiliary hook setting points at preset angle intervals along the circumferential direction, and the number of the auxiliary hooks corresponds to or is less than the number of the auxiliary hook setting points.

15. The auxiliary coupling device for transitional vehicle hook according to claim 14, characterized in that: The preset angle is 90° or 180°.

16. The auxiliary coupling device for transitional vehicle hook according to claim 14, characterized in that: The number of the positioning grooves corresponds to the number of the auxiliary hook setting points.

17. The auxiliary coupling device for transitional vehicle hook according to any one of claims 7 to 10, characterized in that: When a plurality of positioning grooves are provided on the rotating shaft and a plurality of second through holes are provided on the support, the plurality of positioning grooves correspond to the plurality of second through holes in sequence, the locking mechanism is pressed into one of the plurality of positioning grooves, and one of the plurality of auxiliary hooks in the rotating hook assembly is in a hooking position.

18. A rail vehicle transition coupler, characterized in that: include: A transition coupler body and an auxiliary coupling device for a transition coupler as claimed in any one of claims 1 to 17, wherein the support of the auxiliary coupling device for a transition coupler is welded to the transition coupler body.

19. A rail vehicle, characterized in that: include: The rail vehicle transition coupler as claimed in claim 18.

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