Front end opening and closing mechanism for rail vehicle and rail vehicle having the same

Abstract

The present invention discloses a front-end opening and closing mechanism for a rail vehicle and a rail vehicle having the same. The front end of the rail vehicle has an opening. The opening and closing mechanism includes: a hood, a bracket, a swing arm and a driving assembly. The hood can be switched between an open state of opening the opening and a closed state of closing the opening. The bracket includes a support plate. The swing arm is connected to the hood, and the swing arm is movably connected to the bracket. The driving assembly is respectively connected to the bracket and the swing arm to drive the swing arm to drive the hood to switch between an open state and a closed state, wherein a slider that can slide relative to the support plate is provided on the swing arm. The opening and closing mechanism of the present invention can realize the opening and closing of the hood to the opening by driving the swing arm to move through the driving assembly, and utilizing the swing arm to drive the hood to switch between an open state and a closed state, and has the advantages of simple structure, reasonable spatial layout, good stability, etc.

Description

Technical Field

[0001] The present invention relates to the field of rail vehicles, and in particular to a front end opening and closing mechanism for a rail vehicle and a rail vehicle having the same. Background Art

[0002] The front end of a rail vehicle is generally provided with an opening and closing mechanism, which has two openable and closable head covers. The opening and closing mechanism in the related art is provided with a rack and a spatial four-link, which is driven by a cylinder and uses a gear rack to realize transmission, and drives the spatial four-link to realize the opening and closing action of the head cover.

[0003] However, the above-mentioned opening and closing mechanism has a complex structure, high requirements for installation and adjustment, heavy weight, poor rationality of spatial layout, poor transmission effect, poor stability, and is very inconvenient to operate. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a front end opening and closing mechanism for a rail vehicle, which can conveniently switch the head cover between an open state of opening the opening and a closed state of closing the opening, and has the advantages of simple structure, reasonable spatial layout, good stability, etc.

[0005] The present invention also provides a rail vehicle having the opening and closing mechanism.

[0006] According to the front end opening and closing mechanism for a rail vehicle in an embodiment of the present invention, the front end of the rail vehicle has an opening, the opening and closing mechanism includes a head cover, and the head cover can be switched between an open state of opening the opening and a closed state of closing the opening. The opening and closing mechanism also includes: a bracket, a swing arm and a drive assembly, the bracket includes a support plate; the swing arm is connected to the head cover, and the swing arm is movably connected to the bracket; the drive assembly is respectively connected to the bracket and the swing arm to drive the swing arm to drive the head cover to switch between the open state and the closed state, wherein the swing arm is provided with a slider that can slide relative to the support plate.

[0007] According to the front end opening and closing mechanism for rail vehicles in the embodiment of the present invention, the driving assembly drives the swing arm to move, and the swing arm drives the head cover to switch between the open state and the closed state, so that the head cover can open and close the opening. The structure is simple, and the movement stability can be improved by setting the slider to slide relative to the support plate.

[0008] In addition, the front end opening and closing mechanism for a rail vehicle according to an embodiment of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, a wear-resistant part is provided on the support plate, and the sliding block can slidably stop against the wear-resistant part.

[0010] Optionally, the wear-resistant part is detachably connected to the support plate.

[0011] According to some embodiments of the present invention, the slider is detachably mounted on the swing arm via a connecting piece.

[0012] Optionally, a mounting hole is provided on the swing arm, and the connecting member includes: a connecting portion, one end of which is connected to the slider and the other end of which passes through the mounting hole; and a limiting portion, which is detachably engaged with the other end of the connecting portion.

[0013] Advantageously, an adjusting block is connected to one side of the swing arm adjacent to the support plate, the adjusting block has an internal thread, and the connecting portion has an external thread matching the internal thread.

[0014] Optionally, the adjusting block is connected to the swing arm by welding.

[0015] Optionally, the slider is in a hollow cylindrical shape, a stop boss is provided inside the slider, one end of the connecting portion has a hook portion, the connecting portion passes through the slider and the hook portion is hooked on the stop boss.

[0016] Optionally, a receiving groove is provided on the swing arm, and an elastic anti-slip component is provided between the limiting portion and the swing arm, and at least a portion of the elastic anti-slip component is received in the receiving groove.

[0017] Specifically, the connecting portion is a pin, the limiting portion is a nut, and the elastic anti-slip component is a gasket.

[0018] According to some embodiments of the present invention, the head hood includes a first head hood and a second head hood, and the first head hood and the second head hood can be switched between a closed state in which they are folded together to close the opening and an open state in which they are unfolded to open the opening. The swing arm includes a first swing arm and a second swing arm, the first swing arm is connected to the first head hood, the first swing arm is rotatably connected to the bracket, the second swing arm is connected to the second head hood, and the second swing arm is rotatably connected to the bracket; the driving assembly is respectively connected to the first swing arm and the second swing arm to drive the first swing arm and the second swing arm to rotate synchronously and in the opposite direction.

[0019] According to some embodiments of the present invention, there are two sliders, and the two sliders are respectively disposed on the first swing arm and the second swing arm.

[0020] According to some embodiments of the present invention, the driving assembly includes: a driving member, the driving member includes a retractable first part and a second part, the first part is connected to the bracket, and the second part is connected to one of the first swing arm and the second swing arm; a transmission member, the transmission member is respectively connected to the first swing arm and the second swing arm, and is used to make the first swing arm and the second swing arm rotate synchronously and in opposite directions.

[0021] Optionally, the transmission member includes: a first gear, which is coaxially fixed to the first swing arm; and a second gear, which is coaxially fixed to the second swing arm, and the first gear and the second gear are externally meshed.

[0022] Optionally, both the first gear and the second gear are sector gears.

[0023] According to the rail vehicle of the embodiment of the present invention, by providing the front end opening and closing mechanism for the rail vehicle according to the above embodiment of the present invention, the structure can be simplified, the spatial layout can be optimized, the operation can be facilitated, and the stability can be good.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a perspective view of a front end opening and closing mechanism for a rail vehicle according to an embodiment of the present invention;

[0027] Figure 2 is a perspective view of a partial structure of a front end opening and closing mechanism for a rail vehicle according to an embodiment of the present invention;

[0028] Figure 3 is a partial enlarged view of a driving member of a front opening and closing mechanism for a rail vehicle according to an embodiment of the present invention;

[0029] Figure 4 1 is a cross-sectional view of a partial structure of a front end opening and closing mechanism for a rail vehicle according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] 100: opening and closing mechanism;

[0032] 1: hood; 11: first hood; 12: second hood;

[0033] 2: bracket; 21: support plate; 22: wear-resistant parts;

[0034] 3: swing arm; 301: mounting hole; 302: receiving slot;

[0035] 31: first swing arm; 32: second swing arm; 33: adjustment block;

[0036] 4: driving member; 401: electric push rod; 402: flexible shaft; 41: first part; 42: second part;

[0037] 5: transmission member; 51: first gear; 52: second gear;

[0038] 6: slider; 60: through hole; 61: stop boss;

[0039] 7: Connecting piece; 71: Connecting portion; 72: Limiting portion; 73: Elastic anti-slip piece; 711: Hooking portion. DETAILED DESCRIPTION

[0040] In the rail vehicle, the opening and closing mechanism is arranged at the front end, wherein the two cover heads can be switched between a closed state of closing together and an open state of expanding together. When two sections of rail vehicles are docked or the vehicle is stopped for maintenance, the two cover heads can be expanded to expose the coupler arranged at the front end of the rail vehicle; when the rail vehicle is operating normally, the two cover heads can be closed to hide the coupler inside the rail vehicle to improve the overall aesthetics.

[0041] In the related art, some opening and closing mechanism electrical control devices are electrically connected to the electric push rod, the linear slide rail is fixedly installed on the frame assembly, the electric push rod is connected to the slide rail assembly, and the slide plate assembly is slidably fixed on the linear slide rail; the push-pull rods are respectively connected to the slide plate assembly and the force-bearing ends of the upper mounting wing, and the force-applying ends of the upper mounting wing are fixedly connected to the fiberglass head cover; the suspension bracket assembly is fixedly connected to the frame assembly; the lower mounting wing is respectively connected to the suspension bracket assembly and the fiberglass head cover; one end of the flexible shaft is connected to the manual drive interface at the rear end of the electric push rod, and the other end is connected to the vehicle body inspection door position; the locking mechanism part is omitted, and the space utilization rate is high; the mechanism can remain stable, safe and reliable in harsh environments; and can realize manual opening and closing functions without electricity.

[0042] However, the above-mentioned opening and closing mechanism is a front-end opening and closing mechanism for pure electric rail vehicles, which is suitable for large rail locomotives in harsh environments. For urban light rail, the structure is complicated, the weight is large, and it is not light enough. Secondly, the above-mentioned opening and closing mechanism adopts a dual-drive method. Considering factors such as assembly errors, the left and right parts of the head cover are unevenly stressed during the opening and closing process, and the synchronous rotation effect is poor.

[0043] In some opening and closing mechanisms, the swing arm slides directly on the bracket, and the contact area between the two is large, which is easy to wear the material and increase the driving force torque, which is not conducive to energy saving.

[0044] To this end, the present invention provides a front end opening and closing mechanism 100 for a rail vehicle.

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0046] Please refer to the attached Figure 1-Figure 4 The front opening and closing mechanism 100 for a rail vehicle according to an embodiment of the present invention is described. For ease of description and understanding, the up-down direction, the front-back direction, and the left-right direction are described as examples, and in the following description, the front opening and closing mechanism 100 for a rail vehicle is referred to as the opening and closing mechanism 100.

[0047] The opening and closing mechanism 100 is used for the front end of the rail vehicle, and the front end of the rail vehicle has an opening (not shown in the figure). The opening and closing mechanism 100 includes: a head cover 1, a bracket 2, a swing arm 3 and a driving assembly. The head cover 1 can be switched between an open state for opening the opening and a closed state for closing the opening. The bracket 2 can be arranged at the rear of the head cover 1, and a support plate 21 can be arranged on the bracket 2, and the support plate 21 is used to support the swing arm 3.

[0048] like Figure 1 and Figure 2 As shown, the swing arm 3 is connected to the hood 1, and the swing arm 3 is movably connected to the bracket 2, and the driving component can be connected to the bracket 2 and the swing arm 3 respectively, so as to drive the swing arm 3 to drive the hood 1 to switch between the open state and the closed state. In other words, the driving component drives the swing arm 3 to move, and the swing arm 3 drives the hood 1 to move, open or close the opening, and realize the opening and closing switching, with reasonable space layout and simple and compact structure.

[0049] like Figure 1-Figure 4 As shown, the swing arm 3 may be provided with a slider 6 that can slide relative to the support plate 21. When the swing arm 3 rotates, the slider 6 can slide relative to the support plate 21. Compared with the structure in which the swing arm 3 directly contacts and slides with the support plate 21, friction is reduced, movement stability is improved, wear is reduced, and driving force resistance can be reduced, which is conducive to energy saving.

[0050] According to the front end opening and closing mechanism 100 for rail vehicles according to the embodiment of the present invention, the swing arm 3 is driven to move by the driving component, and the swing arm 3 is used to drive the head cover 1 to switch between the open state and the closed state, so that the head cover 1 can open and close the opening. The structure is simple and compact, and by setting the slider 6 to slide relative to the support plate 21, the movement stability can be improved.

[0051] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the hood 1 includes a first hood 11 and a second hood 12. The first hood 11 and the second hood 12 can be switched between a closed state in which they are closed together to close the opening and an open state in which they are unfolded together to open the opening. That is, the first hood 11 and the second hood 12 are closed together to close the opening together, and the hood 1 is switched to the closed state. The first hood 11 and the second hood 12 are unfolded together to open the opening, and the hood 1 is switched to the open state.

[0052] like Figure 1 and Figure 2 As shown, the swing arm 3 includes a first swing arm 31 and a second swing arm 32. The first swing arm 31 can be connected to the first head cover 11, and the first swing arm 31 can be rotatably connected to the bracket 2. When the first swing arm 31 rotates, it can drive the first head cover 11 to rotate relative to the bracket 2. The second swing arm 32 can be connected to the second head cover 12, and the second swing arm 32 can be rotatably connected to the bracket 2. When the second swing arm 32 rotates, it can drive the second head cover 12 to rotate relative to the bracket 2; conversely, when the first head cover 11 rotates, it can drive the first swing arm 31 to rotate, and when the second head cover 12 rotates, it can drive the second swing arm 32 to rotate.

[0053] The driving assembly is connected to the first swing arm 31 and the second swing arm 32 respectively to drive the first swing arm 31 and the second swing arm 32 to rotate synchronously and in opposite directions. In other words, the driving assembly drives the first swing arm 31 and the second swing arm 32 to rotate synchronously, and the rotation directions of the first swing arm 31 and the second swing arm 32 are opposite.

[0054] For example, in Figure 1 and Figure 2 In the example shown, the first head cover 11 located on the right side of the figure and the second head cover 12 located on the left side of the figure are described in detail. When the driving component drives the second swing arm 32 to rotate around its pivot axis, the first swing arm 31 rotates around its pivot axis at the same time, and the rotation directions of the first swing arm 31 and the second swing arm 32 are opposite, the first head cover 11 and the second head cover 12 move away from each other, unfold each other, and switch to an open state; and when the driving component drives the second swing arm 32 to rotate around its pivot axis, the first swing arm 31 rotates around its pivot axis at the same time, and the rotation directions of the first swing arm 31 and the second swing arm 32 are opposite, the first head cover 11 and the second head cover 12 move closer to each other, close together, and switch to a closed state.

[0055] like Figure 1-Figure 4 As shown, the swing arm 3 may be provided with a slider 6 that can slide relative to the support plate 21. When the swing arm 3 rotates, the slider 6 can slide relative to the support plate 21. Compared with the structure in which the swing arm 3 directly contacts and slides with the support plate 21, friction is reduced, wear is alleviated, and driving force resistance can be reduced, which is conducive to energy saving.

[0056] It can be understood that the slider 6 can be arranged on at least one of the first swing arm 31 and the second swing arm 32. That is, the slider 6 can be arranged on the first swing arm 31, and when the first swing arm 31 rotates, it drives the slider 6 to slide relative to the support plate 21; or the slider 6 can be arranged on the second swing arm 32, and when the second swing arm 32 rotates, it drives the slider 6 to move, and the slider 6 slides relative to the support plate 21; advantageously, there can be two sliders 6, and the two sliders 6 can be arranged on the first swing arm 31 and the second swing arm 32 respectively. When the first swing arm 31 and the second swing arm 32 rotate, the two sliders 6 slide relative to the support plate 21 respectively, which reduces the contact area, thereby greatly reducing friction, reducing wear, and extending the service life of the swing arm 3.

[0057] Thus, the opening and closing mechanism 100 can drive the first swing arm 31 and the second swing arm 32 to rotate through the driving assembly, and the first swing arm 31 and the second swing arm 32 are set to rotate synchronously and in the opposite direction, so that the first head cover 11 and the second head cover 12 can be easily switched between the closed state of being closed to each other and the open state of being unfolded to each other, without the need to set up a spatial connecting rod mechanism, the structure is simple, and the difficulty of processing and adjustment can be reduced. Moreover, the setting of the slider 6 can reduce the friction between the swing arm 3 and the support plate 21, reduce wear, and reduce the driving force, so that the entire opening and closing mechanism 100 is lighter and energy-saving.

[0058] According to some embodiments of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, a wear-resistant part 22 may be provided on the support plate 21, and the slider 6 may slidably stop against the wear-resistant part 22. Optionally, the slider 6 and the wear-resistant part 22 may be made of wear-resistant materials such as polyurethane and polyethylene. On the one hand, the relative sliding of the slider 6 and the wear-resistant part 22 may assist in realizing the rotation of the first swing arm 31 and the second swing arm 32, so that the first head cover 11 and the second head cover 12 may stably realize the opening and closing action; on the other hand, the friction between the swing arm 3 and the support part may be transferred to the slider 6 and the wear-resistant part 22, thereby avoiding the friction between the swing arm 3 and the support plate 21, and effectively extending the service life.

[0059] Optionally, the wear-resistant part 22 is detachably provided on the support plate 21. For example, the wear-resistant part 22 can be installed on the support plate 21 by the cooperation of bolts and nuts, or the wear-resistant part 22 can be installed on the support plate 21 by snap-fitting. Thus, during the opening and closing process of the opening and closing mechanism 100, the slider 6 slides on the wear-resistant part 22. When the life of the wear-resistant part 22 reaches a predetermined life, the wear-resistant part 22 can be removed and replaced, which is convenient to operate, efficient, and conducive to controlling the repair and maintenance costs.

[0060] In some embodiments, the slider 6 can be detachably provided on the swing arm 3 via the connecting piece 7, so that when the life of the slider 6 reaches a predetermined life, the slider 6 can be conveniently removed and replaced, which can further help control costs.

[0061] Alternatively, if Figure 4 As shown, the swing arm 3 may be provided with a mounting hole 301, and the connecting member 7 may include: a connecting portion 71 and a limiting portion 72, wherein one end of the connecting portion 71 (for example, the lower end shown in the figure) may be connected to the slider 6, and the other end of the connecting portion 71 (that is, the upper end shown in the figure) may pass through the mounting hole 301, and the limiting portion 72 may be detachably matched with the other end of the connecting portion 71. Thus, during installation, the slider 6 is connected to one end of the connecting portion 71, and then the other end of the limiting portion 72 is extended from the swing arm 3 through the mounting hole 301, and then the limiting portion 72 is matched with the other end of the connecting portion 71, so that the slider 6 can be installed on the swing arm 3. It can be understood that the disassembly process is opposite to the above-mentioned installation process, which is not only simple and compact in structure, but also convenient and labor-saving in operation.

[0062] In some embodiments, Figure 4 As shown, the side of the swing arm 3 adjacent to the support plate 21 can be connected with an adjustment block 33, the adjustment block 33 has an internal thread, and the connecting portion 71 has an external thread matching the internal thread. Therefore, the distance between the adjustment block 33 and the connecting portion 71 can be adjusted, so that the distance between the slider 6 and the swing arm 3 can be adjusted, which can not only avoid serious wear between the slider 6 and the wear-resistant part 22, but also adjust the parallelism between the swing arm 3 and the support plate 21, so that the stability of the opening and closing mechanism 100 is further improved.

[0063] Optionally, the adjusting block 33 is welded to the swing arm 3, which is easy to process and low in cost. In addition, the threaded fit between the adjusting block 33 and the connecting portion 71 can also reduce the influence of deformation of the welding portion due to stress on the parallelism between the swing arm 3 and the support plate 21, so that the parallelism between the swing arm 3 and the support plate 21 can be maintained at a better level, which can further reduce wear and improve reliability.

[0064] like Figure 4 As shown, the slider 6 may be a hollow cylinder, the slider 6 may have a stop boss 61, one end (i.e., the lower end shown) of the connecting portion 71 may have a hooking portion 711, the connecting portion 71 may pass through the slider 6, and the hooking portion 711 may be hooked on the stop boss 61. Thus, the slider 6 may be connected to the connecting portion 71, the structure is simple and compact, the disassembly and assembly is labor-saving, and the maintenance is more convenient.

[0065] Advantageously, a receiving groove 302 may be provided on the swing arm 3, such as Figure 3As shown, an elastic anti-slip member 73 may be provided between the position-limiting portion 72 and the swing arm 3, and at least a portion of the elastic anti-slip member 73 may be accommodated in the accommodation groove 302. In other words, a portion of the elastic anti-slip member 73 may be accommodated in the accommodation groove 302, or the elastic anti-slip member 73 may be accommodated in the accommodation groove 302 as a whole. Thus, on the one hand, the elastic anti-slip member 73 may prevent the position-limiting portion 72 from loosening and falling due to the vibration of the swing arm 3 during the rotation process, thereby preventing the opening and closing mechanism 100 from failing. On the other hand, the provision of the accommodation groove 302 may prevent the position-limiting portion 72 from being displaced significantly, thereby improving safety and reliability, and making the appearance of the opening and closing mechanism 100 neater and more beautiful.

[0066] Specifically, the connecting portion 71 can be a pin, the limiting portion 72 can be a nut, and the elastic anti-slip component 73 can be a gasket. The structure is simple and compact, and disassembly and assembly are convenient and labor-saving. In addition, the interchangeability of various components is high, which is conducive to cost control.

[0067] For the driving components of the opening and closing mechanism 100, Figure 1 and Figure 2 As shown, it may include: a driving member 4 and a transmission member 5, wherein the driving member 4 includes a retractable first part 41 and a second part 42, the first part 41 is connected to the bracket 2, and the second part 42 is connected to one of the first swing arm 31 and the second swing arm 32 to drive one of the first swing arm 31 and the second swing arm 32 to rotate. In other words, the first part 41 and the second part 42 of the driving assembly can be relatively retractable, and when the first part 41 and the second part 42 are relatively retracted, one of the first swing arm 31 and the second swing arm 32 can rotate. The transmission member 5 can be connected to the first swing arm 31 and the second swing arm 32 respectively, and the transmission member 5 is used to make the first swing arm 31 and the second swing arm 32 rotate synchronously and in opposite directions.

[0068] For example, in Figure 1 and Figure 2 In the example shown, when the first part 41 and the second part 42 of the driving member 4 are relatively extended, the second swing arm 32 rotates around its pivot axis, and the first swing arm 31 rotates around its pivot axis at the same time, and the rotation directions of the first swing arm 31 and the second swing arm 32 are opposite, so that the first head cover 11 and the second head cover 12 move away from each other, unfold each other, and switch to an open state; and when the first part 41 and the second part 42 of the driving member 4 are relatively shortened, the second swing arm 32 rotates around its pivot axis, and the first swing arm 31 rotates around its pivot axis at the same time, and the rotation directions of the first swing arm 31 and the second swing arm 32 are opposite, so that the first head cover 11 and the second head cover 12 move closer to each other, close together, and switch to a closed state.

[0069] Optionally, the driving member 4 can be a motor, and the first part 41 and the second part 42 can be in the form of a screw and a nut; or the driving member 4 can be an electric push rod 401, which can realize automatic opening and closing of the opening and closing mechanism 100; or the driving member 4 can be a flexible shaft 402, that is, the opening and closing mechanism 100 is opened and closed by manual drive, which has a simple and compact structure, is easy to assemble and adjust, can reduce occupied space, optimize the structural layout, and is convenient for flexible operation at any time.

[0070] In some embodiments, optionally, the first swing arm 31 may include multiple swing arms with overlapping rotation axes, and the second swing arm 32 may include multiple swing arms with overlapping rotation axes, so that the driven swing arm 3 can be used to assist in the opening and closing action, with high reliability and good stability. In the description of the present invention, the meaning of "multiple" is two or more.

[0071] For example, in Figure 1 and Figure 2 In the example shown, the first swing arm 31 may include two spaced apart in the up-down direction, the second swing arm 32 may include two spaced apart in the up-down direction, and the rotation axes of the two first swing arms 31 coincide with each other, and the rotation axes of the two second swing arms 32 coincide with each other.

[0072] Alternatively, if Figure 1 and Figure 2 As shown, the driving member 4 drives the first swing arm 31 and the second swing arm 32 located at the top to rotate, and the first swing arm 31 and the second swing arm 32 located at the bottom are synchronously driven, and the first swing arm 31 and the second swing arm 32 located at the bottom are used to achieve an auxiliary effect; or, the driving member 4 can be arranged on the first swing arm 31 and the second swing arm 32 located at the bottom, so that the first swing arm 31 and the second swing arm 32 located at the bottom rotate in opposite directions and synchronously, and at the same time, the first swing arm 31 and the second swing arm 32 located at the top rotate synchronously, which can effectively improve the opening and closing stability and reliability.

[0073] Of course, the structure of the present invention is not limited thereto, and the number of the first swing arm 31 and the second swing arm 32 may be other numbers, and the driving member 4 may be flexibly arranged on the first swing arm 31 and the second swing arm 32 corresponding to each other, and the present invention does not make any specific limitation on this.

[0074] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the transmission member 5 may include: a first gear 51 and a second gear 52. Specifically, the first gear 51 may be coaxially fixed to the first swing arm 31, the second gear 52 may be coaxially fixed to the second swing arm 32, and the first gear 51 and the second gear 52 are externally meshed. In this way, when the first swing arm 31 rotates around its pivot axis, the first gear 51 rotates synchronously with the first swing arm 31, and the first gear 51 is externally meshed with the second gear 52, and the second gear 52 rotates in the opposite direction. At this time, the second swing arm 32 rotates synchronously with the second gear 52, thereby achieving synchronous and reverse rotation of the first swing arm 31 and the second swing arm 32, so that the first hood 11 and the second hood 12 can be synchronously closed or synchronously unfolded, thereby achieving switching between the closed state and the open state, with high transmission efficiency, good reliability, simple structure, and convenient disassembly and assembly.

[0075] It should be noted that the so-called coaxial fixed connection means that the gear is coaxially arranged and fixedly connected with the swing arm 3, that is, the gear and the swing arm 3 can be synchronously pivoted, which is understandable to those skilled in the art. In addition, it is understandable that the first gear 51 and the second gear 52 have the same number of teeth, and the two are externally meshed to achieve transmission, and the rotation directions are opposite.

[0076] Advantageously, if Figure 1 and Figure 2 As shown, the first gear 51 and the second gear 52 are both fan-shaped gears, which can not only realize the transmission between the first swing arm 31 and the second swing arm 32, so that the first swing arm 31 and the second swing arm 32 rotate synchronously and in opposite directions, but also have a simpler and more compact structure, are convenient to make way, have high space utilization, and have a more compact layout.

[0077] In some embodiments, the opening and closing mechanism 100 may further include a positioning device (not shown in the figure). When the first swing arm 31 and the second swing arm 32 rotate to the point where the first hood 11 and the second hood 12 are in a fully open state or a fully closed state, the positioning device may be used to position at least one of the first swing arm 31, the second swing arm 32, the first hood 11 and the second hood 12, and limit the rotation of the first swing arm 31 and the second swing arm 32, so that the first hood 11 and the second hood 12 are limited in a position where they are expanded or closed to each other, so as to facilitate other operations on the hook, etc., thereby improving completeness.

[0078] Advantageously, if Figure 1-Figure 3As shown, the driving member 4 may be a dual-drive structure including a flexible shaft 402 and an electric push rod 401. Specifically, under normal circumstances, the electric push rod 401 (or the flexible shaft 402) provides a driving force, which is transmitted to the swing arm 3, and the second swing arm 32 rotates around the rotation axis. At the same time, the transmission member 5 drives the first swing arm 31 to rotate synchronously in the opposite direction, and the slider 6 slides along the wear-resistant member 22. The first hood 11 and the second hood 12 unfold mutually, and the opening and closing mechanism 100 opens. When the first hood 11 and the second hood 12 are switched to the open state, the positioning device can realize the positioning of the first hood 11 and the second hood 12. It can be understood that the closing process of the opening and closing mechanism 100 is opposite to the above-mentioned opening process.

[0079] When the electric push rod 401 cannot be opened and closed automatically due to power failure or other factors, the opening and closing mechanism 100 can be opened and closed mechanically by operating the flexible shaft 402, that is, the opening and closing double insurance of the opening and closing mechanism 100 is realized, which is convenient to operate and has better reliability.

[0080] In summary, the front end opening and closing mechanism 100 for rail vehicles according to the embodiment of the present invention can conveniently switch the first head cover 11 and the second head cover 12 between a closed state in which they are folded together and an open state in which they are unfolded together. It has the advantages of simple and compact structure, low difficulty in processing and installation, reasonable spatial layout, light weight, good stability, easy operation, and cost control.

[0081] The rail vehicle according to the embodiment of the present invention includes the front end opening and closing mechanism 100 for the rail vehicle according to the above-mentioned embodiment of the present invention.

[0082] According to the rail vehicle of the embodiment of the present invention, by setting the above-mentioned opening and closing mechanism 100 according to the present invention, the first head cover 11 and the second head cover 12 can be easily switched between the mutually closed and mutually expanded states, and the structure can be simplified, the stability is improved, and the operation is convenient.

[0083] The other structures and operations of the rail vehicle are understood and easily obtained by ordinary technicians in the field, and will not be described in detail here.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A front end opening and closing mechanism for a rail vehicle, characterized in that: The front end of the rail vehicle has an opening, and the opening and closing mechanism includes a head cover, and the head cover can be switched between an open state of opening the opening and a closed state of closing the opening, characterized in that the opening and closing mechanism also includes: A support, the support comprising a support plate; A swing arm, the swing arm is connected to the head cover, and the swing arm is movably connected to the bracket; A driving assembly, wherein the driving assembly is connected to the bracket and the swing arm respectively to drive the swing arm to drive the hood to switch between the open state and the closed state. Wherein, the swing arm is provided with a sliding block which is slidable relative to the support plate; The support plate is provided with a wear-resistant part, and the sliding block can slidably stop against the wear-resistant part; The slider is detachably mounted on the swing arm through a connecting piece, and a mounting hole is provided on the swing arm; the connecting piece comprises: a connecting part, one end of which is connected to the slider and the other end of which passes through the mounting hole; and a limiting part, which is detachably matched with the other end of the connecting part; An adjusting block is connected to one side of the swing arm adjacent to the support plate, the adjusting block has an internal thread, and the connecting portion has an external thread matching the internal thread; The head cover comprises a first head cover and a second head cover, and the first head cover and the second head cover are switchable between a closed state in which they are folded together to close the opening and an open state in which they are unfolded to open the opening. The swing arm includes a first swing arm and a second swing arm, the first swing arm is connected to the first head cover, the first swing arm is rotatably connected to the bracket, the second swing arm is connected to the second head cover, and the second swing arm is rotatably connected to the bracket; The driving assembly is connected to the first swing arm and the second swing arm respectively to drive the first swing arm and the second swing arm to rotate synchronously and in opposite directions; The drive assembly comprises: A driving member, the driving member comprising a telescopic first part and a second part, the first part being connected to the bracket, and the second part being connected to one of the first swing arm and the second swing arm; A transmission member, the transmission member is connected to the first swing arm and the second swing arm respectively, and is used to make the first swing arm and the second swing arm rotate synchronously and in opposite directions; The transmission member comprises: A first gear, the first gear is coaxially fixedly connected with the first swing arm; The second gear is coaxially fixed to the second swing arm, and the first gear is externally meshed with the second gear.

2. The front end opening and closing mechanism for a rail vehicle according to claim 1, characterized in that: The wear-resistant part is detachably connected to the support plate.

3. The front end opening and closing mechanism for a rail vehicle according to claim 1, characterized in that: The adjusting block is connected to the swing arm by welding.

4. The front end opening and closing mechanism for a rail vehicle according to claim 1, characterized in that: The slider is in a hollow cylindrical shape, and a stop boss is provided inside the slider. One end of the connecting portion has a hook portion, the connecting portion passes through the slider, and the hook portion is hooked on the stop boss.

5. The front end opening and closing mechanism for a rail vehicle according to claim 1, characterized in that: The swing arm is provided with a receiving groove, an elastic anti-slipping piece is provided between the limiting portion and the swing arm, and at least a part of the elastic anti-slipping piece is received in the receiving groove.

6. The front end opening and closing mechanism for a rail vehicle according to claim 5, characterized in that: The connecting portion is a pin, the limiting portion is a nut, and the elastic anti-slip component is a gasket.

7. The front end opening and closing mechanism for a rail vehicle according to claim 1, characterized in that: There are two sliders, and the two sliders are respectively arranged on the first swing arm and the second swing arm.

8. The front end opening and closing mechanism for a rail vehicle according to claim 1, characterized in that: The first gear and the second gear are both sector gears.

9. A rail vehicle, characterized in that: It comprises a front end opening and closing mechanism for a rail vehicle according to any one of claims 1 to 8.

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