CN110525464A - Front opening and closing mechanism for rail vehicle and rail vehicle having the same - Google Patents

Abstract

The invention discloses a kind of front end switching mechanism used for rail vehicle and with its rail vehicle, the front end of rail vehicle has opening, switching mechanism includes: head-shield, bracket, swing arm and driving assembly, and head-shield can be switched between the opening state for opening opening and the closed state of closure opening；Bracket includes support plate；Swing arm connects head-shield, and swing arm is movably connected with bracket；Driving assembly is connected with bracket and swing arm respectively, to drive swing arm that head-shield is driven to switch between opening state and closed state, wherein swing arm is equipped with relative to the slidable sliding block of support plate.Switching mechanism of the invention, swing arm activity is driven by driving assembly, it drives head-shield to switch between opening state and closed state using swing arm, opening and closing of the head-shield to opening may be implemented, and have many advantages, such as that structure is simple, space layout is reasonable, stability is good.

Description

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

technical field

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

Background technique

The front end of the rail vehicle is generally provided with an opening and closing mechanism, and the opening and closing mechanism has two hoods that can be opened and closed. The opening and closing mechanism in the related art is provided with a rack and a space four-link, which is driven by a cylinder, and uses the rack and pinion to realize transmission, and drives the space four-link to realize the opening and closing action of the cover head.

However, the above-mentioned opening and closing mechanism has complex structure, high installation and adjustment requirements, heavy weight, poor rationality of space layout, poor transmission effect, poor stability, and very inconvenient operation.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes 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 and reasonable space layout. , good stability and so on.

The present invention also provides a rail vehicle with the above-mentioned opening and closing mechanism.

According to a front end opening and closing mechanism for a rail vehicle according to an embodiment of the present invention, the front end of the rail vehicle has an opening, and the opening and closing mechanism includes a head cover in an open state in which the opening is opened and in a state in which the opening is closed. Switchable between closed states, the opening and closing mechanism further 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 The bracket is connected to the bracket; the driving assembly is respectively connected to the bracket and the swing arm, so as to drive the swing arm to drive the head cover to switch between the open state and the closed state, wherein the swing arm There is a sliding block slidable relative to the support plate.

According to the front-end opening and closing mechanism for a rail vehicle according to the embodiment of the present invention, the swing arm is driven by the drive assembly to move, and the swing arm is used to drive the head cover to switch between the open state and the closed state, so that the opening and closing of the opening of the head cover can be realized. It is simple, and by setting the slider to slide relative to the support plate, the movement stability can be improved.

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

According to some embodiments of the present invention, a wear-resistant member is provided on the support plate, and the slider slidably stops against the wear-resistant member.

Optionally, the wear member is detachably connected to the support plate.

According to some embodiments of the present invention, the slider is detachably provided on the swing arm through a connecting piece.

Optionally, a mounting hole is provided on the swing arm, and the connecting piece includes: a connecting part, one end of the connecting part is connected with the slider and the other end passes through the mounting hole; The limiting portion is detachably fitted with the other end of the connecting portion.

Advantageously, a side of the swing arm adjacent to the support plate is connected with an adjustment block, the adjustment block has an inner thread, and the connecting portion has an outer thread matched with the inner thread.

Optionally, the adjustment block is connected to the swing arm by welding.

Optionally, the slider is in the shape of a hollow cylinder, the slider has a stop boss, the one end of the connecting part has a hooking part, the connecting part passes through the slider and is The hook portion is hooked on the stop boss.

Optionally, an accommodating groove is provided on the swing arm, an elastic anti-releasing member is provided between the limiting portion and the swing arm, and at least part of the elastic anti-releasing member is accommodated in the accommodating groove.

Specifically, the connecting portion is a pin, the limiting portion is a nut, and the elastic anti-falloff member is a washer.

According to some embodiments of the present invention, the hood includes a first hood and a second hood, and the first hood and the second hood are in a closed state in which the first hood and the second hood are closed to close the opening and are unfolded from each other. It can be switched between an open state of opening the opening, the swing arm includes a first swing arm and a second swing arm, the first swing arm is connected with the first head cover, and the first swing arm can be 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 drive assemblies are respectively connected to the first swing arm is connected with the second swing arm to drive the first swing arm and the second swing arm to rotate synchronously and in opposite directions.

According to some embodiments of the present invention, there are two sliding blocks, and the two sliding blocks are respectively disposed on the first swing arm and the second swing arm.

According to some embodiments of the present invention, the drive assembly includes a drive member, the drive 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 the A first swing arm and one of the second swing arms are connected; a transmission member, the transmission member is respectively connected with the first swing arm and the second swing arm, and is used for connecting the first swing arm and the second swing arm. The second swing arms rotate synchronously and in opposite directions.

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

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

According to the rail vehicle of the embodiment of the present invention, by arranging the front opening and closing mechanism for the rail vehicle according to the above-mentioned embodiment of the present invention, the structure can be simplified, the space layout can be optimized, the operation is convenient and the stability is good.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

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;

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;

Fig. 3 is a partial enlarged view of the driving part of the front opening and closing mechanism for a rail vehicle according to an embodiment of the present invention;

4 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.

Reference number:

100: opening and closing mechanism;

1: hood; 11: first hood; 12: second hood;

2: bracket; 21: support plate; 22; wear parts;

3: swing arm; 301: mounting hole; 302: accommodating slot;

31: The first swing arm; 32: The second swing arm; 33: Adjustment block;

4: driving part; 401: electric push rod; 402: flexible shaft; 41: the first part; 42: the second part;

5: Transmission parts; 51: The first gear; 52: The second gear;

6: Slider; 60: Through hole; 61: Stop boss;

7: connecting part; 71: connecting part; 72: limiting part; 73: elastic anti-dropping part; 711: hooking part.

Detailed ways

In the rail vehicle, the opening and closing mechanism is provided at the front end, wherein the two cover heads can be switched between the closed state of closing each other and the open state of opening each other. The cover heads are spread out from each other to expose the coupler provided at the front end of the rail vehicle; when the rail vehicle is running normally, the two cover heads can be closed to each other to hide the coupler in the rail vehicle and improve the overall aesthetics.

In the related art, some electrical control devices of the opening and closing mechanism are electrically connected with the electric push rod, the linear slide rail is fixedly installed on the skeleton, the electric push rod and the slide rail are connected, and the slide plate is slidably fixed on the linear slide. On the rail; the push-pull rod is respectively connected with the slide plate and the force end of the upper mounting wing, the force end of the upper mounting wing is fixedly connected with the FRP head cover; the suspension bracket is fixedly connected with the skeleton; the lower mounting wing is respectively composed of the suspension bracket and the glass fiber reinforced plastic The head cover is connected; 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 position of the vehicle body inspection door; the locking mechanism part is omitted, and the space utilization rate is high; the mechanism can remain stable, safe and reliable in harsh environments ; Can be manually turned on and off in the absence of electricity.

However, the above-mentioned opening and closing mechanism is a front-end opening and closing mechanism of a pure electric rail vehicle, which is suitable for large-scale rail locomotives in harsh environments. For urban light rail, the structure is cumbersome, the weight is heavy, 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 two parts of the head cover are subjected to uneven force on the left and right during the opening and closing actions, and the synchronous rotation effect is poor.

There are also opening and closing mechanisms, the swing arm slides directly on the bracket, the contact area between the two is large, the material is easy to wear, and the driving force torque is increased, which is not conducive to energy saving.

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

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

The front opening and closing mechanism 100 for a rail vehicle according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 4 . For ease of description and understanding, the up-down direction, front-rear direction, and left-right direction are respectively described by taking the directions shown in the figure as examples.

The opening and closing mechanism 100 is used for the front end of the rail vehicle. 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 drive assembly. The head cover 1 can be switched between an open state that opens the opening and a closed state that closes the opening, a bracket 2 can be provided at the rear of the head cover 1, and a support plate 21 can be provided on the bracket 2, and the support plate 21 is used for supporting Swing arm 3.

As shown in Figures 1 and 2, the swing arm 3 is connected to the head cover 1, and the swing arm 3 is movably connected to the bracket 2, and the drive assembly can be connected to the bracket 2 and the swing arm 3, respectively, to drive the swing arm 3 to drive the head cover. 1 Toggles between open and closed states. That is to say, the drive assembly drives the swing arm 3 to move, the swing arm 3 drives the head cover 1 to move, opens or closes the opening, and realizes opening and closing switching, the space layout is reasonable, and the structure is simple and compact.

As shown in FIGS. 1-4 , the swing arm 3 may be provided with a slider 6 that is slidable 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, the friction is reduced, the action stability is improved, the wear is reduced, and the driving force rejection can be reduced, which is conducive to realizing energy saving.

According to the front-end opening and closing mechanism 100 for a rail vehicle according to the embodiment of the present invention, the swing arm 3 is driven by the drive assembly to move, 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 opening and closing of the head cover 1 can be realized. Open and closed, 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.

According to some embodiments of the present invention, as shown in FIGS. 1 and 2 , the head cover 1 includes a first head cover 11 and a second head cover 12 . The first head cover 11 and the second head cover 12 are switchable between a closed state in which they are closed with each other to close the opening and an open state in which they are unfolded with each other to open the opening. That is, the first hood 11 and the second hood 12 are closed to each other, and the opening can be closed together, the hood 1 is switched to the closed state, the first hood 11 and the second hood 12 are unfolded to each other, the opening can be opened, and the hood 1 can be switched. to the open state.

As shown in FIGS. 1 and 2 , 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 is rotatably connected to the bracket 2 When the first swing arm 31 is rotated, it can drive the first head cover 11 to rotate relative to the bracket 2, the second swing arm 32 can be connected with the second head cover 12, and the second swing arm 32 can be rotatably connected with 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; on the contrary, 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 first swing arm 31 to rotate. The two swing arms 32 rotate.

The driving assemblies are respectively connected with the first swing arm 31 and the second swing arm 32 to drive the first swing arm 31 and the second swing arm 32 to rotate synchronously and in opposite directions. That is, 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.

For example, in the example shown in FIG. 1 and FIG. 2 , the first head cover 11 on the right side of the figure and the second head cover 12 on the left side of the figure are used as examples for detailed description. The second swing arm 32 is driven to rotate around its pivot axis, while the first swing arm 31 is rotated around its pivot axis, and the rotation directions of the first swing arm 31 and the second swing arm 32 are opposite. The hoods 12 move away from each other, expand each other, and switch to the open state; and when the driving assembly drives the second swing arm 32 to rotate around its pivot axis, while the first swing arm 31 rotates around its pivot axis, and the first swing arm 31 and The rotation direction of the second swing arm 32 is opposite, so that the first head cover 11 and the second head cover 12 are close to each other, close to each other, and switch to a closed state.

As shown in FIGS. 1-4 , the swing arm 3 may be provided with a slider 6 that is slidable 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 , the friction is reduced, the wear is reduced, and the driving force rejection can be reduced, which is beneficial to realize energy saving.

It can be understood that the slider 6 can be disposed on at least one of the first swing arm 31 and the second swing arm 32 . That is to say, the slider 6 can be arranged on the first swing arm 31, and when the first swing arm 31 rotates, it drives the sliding movement, and the slider 6 slides relative to the support plate 21; or, the slider 6 can be arranged on the second swing arm 32, 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 respectively arranged on the first swing arm 31 and the second swing arm 32, 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, reducing the contact area, thereby greatly reducing the friction and reducing the Wear, can prolong the service life of the swing arm 3.

Therefore, the opening and closing mechanism 100 can drive the first swing arm 31 and the second swing arm 32 to rotate through the drive assembly, and the first swing arm 31 and the second swing arm 32 are set to rotate synchronously and in opposite directions, which can conveniently The first head cover 11 and the second head cover 12 can be switched between the closed state of closing each other and the open state of opening each other without setting a space link mechanism, the structure is simple, and the difficulty of processing and assembling can be reduced. Moreover, the arrangement of the slider 6 can reduce the friction between the swing arm 3 and the support plate 21 , reduce wear and tear, and reduce the driving force rejection, and the entire opening and closing mechanism 100 is more lightweight and energy-saving.

According to some embodiments of the present invention, as shown in FIG. 1 , FIG. 2 and FIG. 4 , the support plate 21 may be provided with a wear-resistant member 22 , and the slider 6 can be slidably abutted against the wear-resistant member 22 . Optionally, the sliding block 6 and the wear-resistant member 22 may be wear-resistant materials such as polyurethane, polyethylene, and the like. On the one hand, the relative sliding of the slider 6 and the wear-resistant member 22 can assist 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 can stably realize the opening and closing actions On the other hand, the friction between the swing arm 3 and the support member can be transferred to the slider 6 and the wear-resistant member 22, avoiding the friction between the swing arm 3 and the support plate 21, which can effectively prolong the service life.

Optionally, the wear-resistant member 22 is detachably provided on the support plate 21 . For example, the wear parts 22 may be mounted to the support plate 21 through the cooperation of bolts and nuts, or the wear parts 22 may be installed to the support plate 21 through snap-fit. Therefore, during the opening and closing process of the opening and closing mechanism 100, the slider 6 slides on the wear-resistant member 22. When the life of the wear-resistant member 22 reaches the predetermined life, the wear-resistant member 22 can be removed and replaced, which is convenient to operate. High efficiency, conducive to control maintenance costs.

In some embodiments, the sliding block 6 can be detachably arranged on the swing arm 3 through the connecting member 7, so that when the service life of the sliding block 6 reaches a predetermined life, the sliding block 6 can be easily removed for replacement, which can further facilitate the Control costs.

Optionally, as shown in FIG. 4 , a mounting hole 301 may be provided on the swing arm 3 , 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) ) can be connected with the slider 6 , and the other end of the connecting portion 71 (ie, the upper end shown in the figure) can pass through the mounting hole 301 , and the limiting portion 72 can be detachably fitted to the other end of the connecting portion 71 . Therefore, 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 protruded from the swing arm 3 through the mounting hole 301, and the limiting portion 72 is fitted to 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 installation process, not only the structure is simple and compact, but also the operation is convenient and labor-saving.

In some embodiments, as shown in FIG. 4 , a side of the swing arm 3 adjacent to the support plate 21 may be connected with an adjustment block 33 , the adjustment block 33 has an inner thread, and the connecting portion 71 has an outer thread matched with the inner 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 avoid serious wear between the slider 6 and the wear-resistant member 22 , the parallelism between the swing arm 3 and the support plate 21 can also be adjusted to further improve the stability of the opening and closing mechanism 100 .

Optionally, the adjustment block 33 is connected to the swing arm 3 by welding, which is convenient to process and low in cost. In addition, the screw fit between the adjusting block 33 and the connecting part 71 can also reduce the influence of the deformation of the welding part due to the stress on the parallelism between the swing arm 3 and the support plate 21, so that the swing arm 3 and the support plate 21 The parallelism between them can be maintained at an optimal level, which can further reduce wear and improve reliability.

As shown in FIG. 4 , the slider 6 may be a hollow cylinder, the slider 6 may have a stop boss 61, and one end (ie, the lower end shown in the figure) of the connecting portion 71 may have a hooking portion 711, and the connecting portion 71 can pass through the slider 6 , and the hook portion 711 can be hooked on the stop boss 61 . In this way, the slider 6 can be connected to the connecting portion 71 , the structure is simple and compact, the disassembly and assembly are labor-saving, and the maintenance is more convenient.

Advantageously, an accommodating groove 302 may be provided on the swing arm 3. As shown in FIG. 3, an elastic disengagement preventing member 73 may be disposed between the limiting portion 72 and the swinging arm 3, and at least part of the elastic disengagement preventing member 73 may be accommodated in the accommodating portion 73. in slot 302. In other words, a part of the elastic disengagement preventing member 73 may be accommodated in the accommodating groove 302 , or the elastic disengaging preventing member 73 may be accommodated in the accommodating groove 302 as a whole. Therefore, on the one hand, the elastic anti-releasing member 73 can prevent the 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. The large displacement of the limiting portion 72 can be avoided, the safety and reliability can be improved, and the appearance of the opening and closing mechanism 100 can be made more neat and beautiful.

Specifically, the connecting part 71 can be a pin, the limiting part 72 can be a nut, and the elastic anti-falling member 73 is a gasket, the structure is simple and compact, the disassembly and assembly are convenient and labor-saving, and the interchangeability of each component is high, which is conducive to cost control.

As shown in FIG. 1 and FIG. 2 , the driving assembly of the opening and closing mechanism 100 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 . One part 41 is connected with the bracket 2 , and the second part 42 is connected with 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. That is to say, the first part 41 and the second part 42 of the driving assembly can be relatively telescopic, and when the first part 41 and the second part 42 are relatively telescopic, one of the first swing arm 31 and the second swing arm 32 can rotate. The transmission member 5 can be connected with the first swing arm 31 and the second swing arm 32 respectively, and the transmission member 5 is used to synchronize the first swing arm 31 and the second swing arm 32 and rotate in the opposite direction.

For example, in the example shown in FIG. 1 and FIG. 2 , when the first part 41 of the driving member 4 and the second part 42 of the driving member 4 are relatively elongated, the second swing arm 32 rotates around its pivot axis, while the first A swing arm 31 rotates around its pivot axis, 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, expand each other, and switch to the 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, while the first swing arm 31 rotates around its pivot axis, and the first swing arm 31 and the first swing arm 31. The rotation directions of the two swing arms 32 are opposite, so that the first head cover 11 and the second head cover 12 are close to each other, close to each other, and switch to a closed state.

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 lead screw and a nut; or the driving member 4 can be an electric push rod 401, which can realize the automatic opening and closing of the opening and closing mechanism 100; Alternatively, the driving member 4 can be a flexible shaft 402, that is, the opening and closing mechanism 100 is manually driven to realize opening and closing, the structure is simple and compact, the installation and adjustment difficulty is low, the occupied space can be reduced, the structure layout can be optimized, and it is convenient for flexible operation at any time.

In some embodiments, optionally, the first swing arm 31 may include a plurality of overlapping rotation axes, and the second swing arm 32 may include a plurality of overlapping rotation axes, so that the driven swing arm 3 can be used to assist in realizing the opening and closing. Close action, high reliability and good stability. In the description of the present invention, "plurality" means two or more.

For example, in the example shown in FIGS. 1 and 2 , the first swing arms 31 may include two spaced apart in the up-down direction, the second swing arms 32 may include two spaced apart in the up-down direction, and the two The rotation axes of the first swing arm 31 are coincident, and the rotation axes of the two second swing arms 32 are coincident.

Optionally, as shown in FIG. 1 and FIG. 2 , the driving member 4 drives the upper first swing arm 31 and the second swing arm 32 to rotate, and the lower first swing arm 31 and the second swing arm 32 are driven synchronously , use the first swing arm 31 and the second swing arm 32 located below to achieve auxiliary functions; alternatively, the driving member 4 can be provided on the first swing arm 31 and the second swing arm 32 located below, so that the first swing arm 31 and the second swing arm 32 located below The swing arm 31 and the second swing arm 32 rotate oppositely and synchronously, while the first swing arm 31 and the second swing arm 32 located above are driven to rotate, which can effectively improve the opening and closing stability and reliability.

Of course, the structure of the present invention is not limited to this, the number of the first swing arm 31 and the second swing arm 32 can also be other, and the driving member 4 can flexibly set the first swing arm 31 and the second swing arm corresponding to each other. 32, the present invention does not specifically limit this.

According to some embodiments of the present invention, as shown in FIGS. 1 and 2 , the transmission member 5 may include: a first gear 51 and a second gear 52 . Specifically, the first gear 51 may be coaxial with the first swing arm 31 For fixing, the second gear 52 can be fixed coaxially with 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 and the second gear 52 are externally meshed, and the second gear 52 rotates in the opposite direction. , the second swing arm 32 rotates synchronously with the second gear 52, thereby realizing the synchronous and reverse 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 can be rotated 12. Synchronous closing or synchronous unfolding, thereby realizing the switching between the closed state and the open state, high transmission efficiency, good reliability, simple structure, and convenient disassembly and assembly.

It should be noted here that the so-called coaxial connection means that the gear and the swing arm 3 are coaxially arranged and fixedly connected, that is, the gear and the swing arm 3 can pivot synchronously. For those skilled in the art, is understandable. In addition, it can be understood that the number of teeth of the first gear 51 and the second gear 52 are the same, they are externally meshed to achieve transmission, and the rotation directions are opposite.

Advantageously, as shown in FIGS. 1 and 2 , the first gear 51 and the second gear 52 are both sector gears, which can not only realize the transmission between the first swing arm 31 and the second swing arm 32 , but also make the first swing arm 31 and the second swing arm 32 are synchronously and reversely rotated, and the structure is simpler and more compact, which is convenient to give way, the space utilization rate is high, and the layout is more compact.

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 are rotated until the first head cover 11 and the second head cover 12 are fully positioned In the open state or the fully closed state, the positioning device can be used to position at least one of the first swing arm 31 , the second swing arm 32 , the first head cover 11 and the second head cover 12 , restricting the first swing arm 31 and the second head cover 12 . The rotation of the second swing arm 32 limits the first head cover 11 and the second head cover 12 to the positions where they are unfolded or closed with each other, so as to facilitate other operations on the coupler and the like, thereby improving the integrity.

Advantageously, as shown in FIGS. 1-3 , the driving member 4 may be a dual driving 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 the driving force, the driving force is transmitted to the swing arm 3, the second swing arm 32 rotates around the rotation axis, and the transmission member 5 drives the first swing arm The arm 31 rotates in the opposite direction synchronously, the slider 6 slides along the wear-resistant member 22, the first head cover 11 and the second head cover 12 are unfolded to each other, the opening and closing mechanism 100 is opened, and when the first head cover 11 and the second head cover 12 are switched When in the open state, the positioning device can realize the positioning of the first head cover 11 and the second head cover 12 . It can be understood that the closing process of the opening and closing mechanism 100 is opposite to the above-mentioned opening process.

When the electric push rod 401 cannot be automatically opened and closed due to factors such as power failure, the mechanical opening and closing of the opening and closing mechanism 100 can be realized by operating the flexible shaft 402, that is, the opening and closing double insurance of the opening and closing mechanism 100 is realized, and the operation is convenient. Better reliability.

All in all, according to the front end opening and closing mechanism 100 for a rail vehicle according to the embodiment of the present invention, the first head cover 11 and the second head cover 12 can be easily switched between the closed state in which they are folded and the open state in which they are unfolded. It has the advantages of simple and compactness, low difficulty in processing and adjustment, reasonable space layout, light weight, good stability, convenient operation and cost control.

A rail vehicle according to an embodiment of the present invention includes the front opening/closing mechanism 100 for a rail vehicle according to the above-described embodiment of the present invention.

According to the rail vehicle of the embodiment of the present invention, by arranging 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 conveniently switched between the mutually closed and mutually unfolded states, and the The structure is simplified, the stability is improved, and the operation is convenient.

Other structures and operations of the rail vehicle are understood and easily obtained by those of ordinary skill in the art, and will not be repeated here.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, The scope of the invention is defined by the claims and their equivalents.

Claims (16)

1. A front end opening and closing mechanism for a rail vehicle, the front end of the rail vehicle having an opening, the opening and closing mechanism comprising a head cover in an open state in which the opening is opened and in a closed state in which the opening is closed It can be switched between, and it is characterized in that, the opening and closing mechanism further includes: a bracket, the bracket includes a support plate; a swing arm, the swing arm is connected with the head cover, and the swing arm is movably connected with the bracket; a driving assembly, which is respectively connected with the bracket and the swing arm, so as 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 sliding block slidable relative to the support plate. 2 . The front-end opening and closing mechanism for a rail vehicle according to claim 1 , wherein a wear-resistant member is provided on the support plate, and the slider is slidably abutted against the wear-resistant member. 3 . 3 . The front end opening and closing mechanism for a rail vehicle according to claim 2 , wherein the wear-resistant member is detachably connected to the support plate. 4 . 4 . The front end opening and closing mechanism for a rail vehicle according to claim 1 , wherein the slider is detachably provided on the swing arm through a connecting member. 5 . 5. The front-end opening and closing mechanism for a rail vehicle according to claim 4, wherein a mounting hole is provided on the swing arm, and the connecting member comprises: a connecting part, one end of the connecting part is connected with the sliding block and the other end passes through the installation hole; A limiting portion, the limiting portion is detachably matched with the other end of the connecting portion. 6 . The front-end opening and closing mechanism for a rail vehicle according to claim 5 , wherein a side of the swing arm adjacent to the support plate is connected with an adjustment block, the adjustment block has an internal thread, and the connection The portion has an external thread matched with the internal thread. 7 . The front-end opening and closing mechanism for a rail vehicle according to claim 6 , wherein the adjusting block is connected to the swing arm by welding. 8 . 8 . The front-end opening and closing mechanism for a rail vehicle according to claim 5 , wherein the slider is in a hollow cylindrical shape, the slider has a stopper boss in the slider, and the one end of the connecting portion has a stopper boss. There is a hooking part, the connecting part passes through the sliding block and the hooking part is hooked on the stop boss. 9 . The front-end opening and closing mechanism for a rail vehicle according to claim 5 , wherein the swing arm is provided with a accommodating groove, and an elastic disengagement prevention member is provided between the limiting portion and the swing arm. 10 . At least part of the elastic anti-falling element is accommodated in the accommodating groove. 10 . The front-end opening and closing mechanism for a rail vehicle according to claim 9 , wherein the connecting portion is a pin, the limiting portion is a nut, and the elastic anti-dropping member is a washer. 11 . 11. The front end opening and closing mechanism for a rail vehicle according to any one of claims 1 to 10, characterized in that: The head cover includes a first head cover and a second head cover, and the first head cover and the second head cover are in a closed state in which they are closed with each other to close the opening and an open state in which they are unfolded with each other to open the opening. switchable between, The swing arm includes a first swing arm and a second swing arm, the first swing arm is connected with the first head cover, the first swing arm is rotatably connected with the bracket, the second swing arm The arm is connected with the second head cover, and the second swing arm is rotatably connected with the bracket; The driving assemblies are respectively connected with 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 opposite directions. 12 . The front-end opening and closing mechanism for a rail vehicle according to claim 11 , wherein the number of the sliders is two, and the two sliders are respectively provided on the first swing arm and the second swing arm. 13 . 13. The front end opening and closing mechanism for a rail vehicle according to claim 11, wherein the drive assembly comprises: a driving part, the driving part comprises a retractable first part and a second part, the first part is connected with the bracket, and the second part is connected with one of the first swing arm and the second swing arm connected; A transmission member is connected with the first swing arm and the second swing arm respectively, and is used for synchronizing and reverse rotation of the first swing arm and the second swing arm. 14. The front-end opening and closing mechanism for a rail vehicle according to claim 13, wherein the transmission member comprises: a first gear, the first gear is fixed coaxially with the first swing arm; A second gear, the second gear is fixed coaxially with the second swing arm, and the first gear and the second gear are externally meshed. 15 . The front end opening and closing mechanism for a rail vehicle according to claim 14 , wherein both the first gear and the second gear are sector gears. 16 . 16. A rail vehicle, comprising the front end opening and closing mechanism for a rail vehicle according to any one of claims 1 to 15.