CN115723806A - Electric coupler pushing device - Google Patents

Abstract

The invention provides an electric coupler pushing device which is used for driving an electric coupler to be connected and disconnected so as to complete connection and disconnection between two vehicles. Electric coupling pusher includes: a support (9); the driving mechanism (8), the driving mechanism (8) includes fixed part (81) and expansion part (82) bearing on the support (9), the expansion part (82) extends out or retracts according to different working states of the electric coupler; the transmission mechanism is connected with the telescopic part (82); push rod (2), the one end and the electric coupler of push rod (2) rotate to be connected in electric coupler pivot (16), push rod (2) other end rotates with drive mechanism to be connected in first pivot (13), drive mechanism sets up push rod (2) and withdraws when pars contractilis (82) withdraw, at the in-process that push rod (2) were withdrawed, push rod (2) rotate first pivot (13) of being connected with drive mechanism (8) and move to the direction of one side.

Description

Electric coupler pushing device

Technical Field

The invention relates to the technical field of railway vehicle-mounted electrical equipment, in particular to an electrical coupler pushing device for a railway.

Background

The electric coupler pushing device is arranged at the front end of the vehicle and is mainly used for driving and ensuring that the electric coupler completes reliable guiding positioning and normal coupling and separation so as to complete connection and disconnection between two vehicles. With the development of rail transit technology, more and more parts and components are mounted at the end of a vehicle, and the mounting space reserved for a coupler buffer system is smaller and smaller, so that higher requirements are put on an electric coupler pushing device, and a more compact pushing device is required to avoid interference between the coupler buffer system and other parts.

The connecting rod type pushing device which is most widely applied at present has stable pushing load and reliable self-locking, but the existing structure occupies larger space. Patent CN111846794A discloses an electric coupler pushing device, which comprises: support frame, support arm, actuating mechanism, drive mechanism. The driving mechanism comprises a fixed part and an expansion part which are borne on the supporting frame, and the expansion part can extend out of or retract from the fixed part according to different working states of the electric coupler. The transmission mechanism is connected with the telescopic part. One end of the supporting arm is connected with the electric coupler in a rotating mode at a first shaft point, the other end of the supporting arm is connected with the transmission mechanism in a rotating mode at a second shaft point, the transmission mechanism is set to enable the second shaft point to move towards the direction of one side where the driving mechanism is located when the expansion portion extends out of the fixing portion, and the electric coupler is pushed to a coupling position. The electric coupler pushing device occupies a large space, and when the pushing device retracts, a second shaft point of the transmission mechanism, which is rotatably connected with the supporting arm, moves upwards. When the electric coupler pushing device moves to the retraction state, the position of the second shaft point in the vertical direction is obviously higher than the height of a fixed hinge joint of the electric coupler and the transmission mechanism, so that the driving mechanism pushing device occupies more space in the vertical direction. Because the space at the end of the vehicle is limited, the existing driving mechanism pushing device cannot meet the installation requirements of components and parts at the end of the vehicle.

Disclosure of Invention

The invention mainly aims to provide a compact pushing device of an electric coupler of a railway vehicle, which has a compact structure and can leave more installation space for components at the end part of the vehicle.

In order to achieve the above object, according to one aspect of the present invention, there is provided an electric coupler pushing device, including: a support; the driving mechanism comprises a fixed part and a telescopic part which are borne on the bracket, and the telescopic part extends out of or retracts back from the fixed part to realize different working states of the pushing device; the transmission mechanism is connected with the telescopic part; the one end of push rod rotates with electric coupling to be connected in electric coupling pivot, and the push rod other end rotates with drive mechanism to be connected in first pivot, and drive mechanism sets up the push rod and withdraws when the pars contractilis withdrawed, and at the in-process that the push rod was withdrawn, the first pivot that push rod and drive mechanism rotate to be connected moves to the direction of actuating mechanism place one side. The push rod moves towards the direction of one side where the driving mechanism is located, and the space requirement in the moving process of the push device is reduced.

Further, drive mechanism includes main drive portion, and main drive portion conducts actuating mechanism's power to the push rod, and the push rod drives the electric coupling and stretches out to linking when the pars contractilis stretches out and hang the position, and the push rod drives the electric coupling and withdraws when the pars contractilis withdrawed. The push cylinder and the electric coupler are synchronous in working state, namely when the push cylinder extends out, the electric coupler also extends out, when the push cylinder retracts, the electric coupler also retracts, dust and corrosion of a piston rod are basically eliminated, and the reliability of the push device is improved.

Furthermore, the transmission mechanism further comprises a supporting arm arranged on one side of the pushing rod.

Furthermore, the main transmission part drives the pushing rod and the supporting arm to be folded towards one side of the driving mechanism when the telescopic part is retracted.

Further, the main transmission part comprises a first rocker on the side of the support arm; the first rocker is arranged on the bracket through a third rotating shaft.

Furthermore, the main transmission part also comprises a second rocker at the side of the pushing rod, a second rotating shaft for arranging the second rocker on the bracket, and a connecting rod connected between the first rocker and the second rocker.

Further, the rotation directions of the first rocking bar and the second rocking bar are opposite. The reverse double-rocker mechanism realizes that the pushing rod and the supporting arm are folded towards the inner side of the pushing device, so that the whole pushing device is more compact, and the space requirement in the movement process of the pushing device is reduced. Meanwhile, the reverse double-rocker mechanism also realizes synchronous extension and retraction of the pushing cylinder and the electric coupler.

Further, in the vertical direction, the second rotating shaft is located at the lower part of the third rotating shaft.

Furthermore, the main transmission part also comprises a rotating arm connected with a second rocker, the second rocker and the rotating arm are rotatably connected with a second rotating shaft, and the other end of the rotating arm is connected with the telescopic part.

Further, the pushing device further comprises a limiting structure for limiting the retraction of the electric coupler.

Furthermore, limit structure sets up on push rod and forms fixed auto-lock angle with drive mechanism's support arm.

Furthermore, a limiting structure is arranged on the supporting arm, or the supporting arm and the pushing rod are provided with limiting structures. The limiting structure eliminates the influence of the gaps of the hinged parts of the connecting rods and the rigidity of the connecting rods on the position of the electric coupler, and improves the self-locking stability.

Furthermore, the limiting structure is a limiting block.

By applying the technical scheme of the invention, the pushing rod and the supporting arm are folded towards the inner side of the pushing device, so that the space requirement of the pushing device in the movement process is reduced; the pushing cylinder and the electric coupler 1 synchronously extend and retract, so that dust and corrosion of a piston rod are eliminated, the reliability of the pushing device is improved, and the failure rate of products is reduced; after the electric coupler extends out, the angle between the pushing rod and the supporting arm is larger than 180 degrees, the first limiting block and the supporting arm form a fixed self-locking angle, the scheme of arranging the limiting structure eliminates the influence of the gap of each connecting rod hinge part and the rigidity of the connecting rod on the position of the electric coupler, and the self-locking stability is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a prior art electrical coupler pushing apparatus;

FIG. 2 is a structural schematic diagram of an electric coupler pushing device in a retracted state;

FIG. 3 is a perspective view of the electrical coupler pushing device of the present invention in a retracted state;

FIG. 4 is a perspective view of the push out position of the electrical coupler push device of the present invention;

FIG. 5 is a schematic diagram of a retraction structure of an electrical coupler pushing device according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a pushing structure of an electrical coupler pushing device according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a retraction structure of a second electrical coupler pushing device in accordance with an embodiment of the present invention;

FIG. 8 is a schematic diagram of a pushing structure of a second electric coupler pushing device according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a retraction structure of a third electrical coupler pushing device according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a pushing structure of a third electric coupler pushing device according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

1. an electrical coupler; 2. a push rod; 3. a support arm; 4. a first rocker; 5. a connecting rod; 6. a rotating arm; 7. a second rocker;

8. a drive mechanism; 81. a fixed part; 82. a telescopic part;

9. a support; 10. a third rotating shaft; 11. a second rotating shaft; 12. a push cylinder rotating shaft; 13. a first rotating shaft; 14. a first stopper; 15. a second limiting block; 16. an electrical coupler shaft; 17. a fourth rotating shaft; 18. a fifth rotating shaft; 19. a sixth rotating shaft;

x, horizontal direction; y, vertical direction;

alpha, the angle formed by the push rod 2 and the support arm 3.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The present invention is described in further detail below with reference to specific examples, which are not to be construed as limiting the scope of the invention as claimed. The term "comprising" when used indicates the presence of a feature but does not preclude the presence or addition of one or more other features; "first," "second," and the like are used to distinguish between different objects and are not limited to a particular order or number.

The electric coupler pushing device is arranged at the front end of the vehicle and is mainly used for driving the electric coupler to be normally connected and separated so as to complete connection and disconnection between the two vehicles. The existing electric coupler pushing device occupies a large space, and as shown in fig. 1, the existing electric coupler pushing device occupies a large space in the height direction, and is not compact in structure.

Fig. 2 shows the electric coupler pushing device of the present invention, and it can be seen that the electric coupler pushing device of the present invention occupies a small space in the height direction. The pushing device of the electric coupler mainly comprises a driving mechanism 8, a transmission mechanism, a pushing rod 2, an electric coupler 1 and the like. Holes are arranged at four corners of the electric coupler 1, and the holes at the four corners penetrate through the sliding guide rail and form clearance fit with the sliding guide rail. The driving mechanism 8 provides driving force, and the transmission mechanism provides the driving force to the pushing rod 2 which is coupled with the electric coupler. Under the drive of the pushing rod 2, the electric coupler 1 slides along the sliding guide rail, so that the electric coupler extends out or retracts in the fixed direction, and reliable guiding and positioning are ensured in the process of extending out or retracting the electric coupler. The driving mechanism 8 may be a cylinder or other driving form.

As shown in fig. 2 to 5, the driving mechanism 8 includes a fixing portion 81 and an expansion portion 82, the fixing portion 81 is supported on the bracket 9 by the pushing cylinder rotating shaft 12, and the expansion portion 82 can extend from or retract into the fixing portion 81 according to different working states of the electric coupler. The transmission mechanism is connected with the telescopic part 82 and outputs the acting force of the driving mechanism 8 according to a specific direction and a specific magnitude; the driving force output by the transmission mechanism is transmitted to a push rod 2 of the electric coupler, one end of the push rod 2 and the electric coupler 1 are rotatably connected to an electric coupler rotating shaft 16, and the other end and the transmission mechanism are rotatably connected to a first rotating shaft 13. When the expansion part 82 extends from the fixed part 81, the transmission mechanism pushes out the electric coupler 1. Fig. 2 and 3 show the movement state of the transmission mechanism and the driving mechanism when the electric coupler retracts, that is, the transmission mechanism is configured such that when the telescopic part 82 retracts toward the fixed part 81, the pushing rod 2 retracts, and during the retracting process of the pushing rod 2, the first rotating shaft 13, which is rotatably connected with the transmission mechanism, of the pushing rod 2 moves toward the direction of one side of the driving mechanism 8. Fig. 4 shows the movement of the transmission mechanism and the driving mechanism when the electric coupler is pushed out, i.e. the transmission mechanism is arranged such that the first rotary shaft 13 moves in the direction opposite to the side of the driving mechanism 8 when the telescopic part 82 extends from the fixed part 81. The electric coupler is pushed out to a coupling position under the driving of the pushing rod 2.

As can be seen from fig. 3 to 4, the pushing device of the electric coupler comprises two sets of transmission mechanisms which are bilaterally symmetrical and/or two sets of pushing rods 2 which are bilaterally symmetrical. Wherein, the push rod 2 is an elastic supporting arm with adjustable length. The double set of support arms structure can provide greater and more uniform thrust. The push rod 2 is provided with a compression spring which is an elastic supporting arm with adjustable length. By finely adjusting the lengths of the elastic supporting arms at the left side and the right side, part processing and assembling errors can be eliminated. In the design of the electric coupler pushing device, a set of transmission mechanism and a set of pushing rod can also be adopted.

Wherein the transmission mechanism comprises a main transmission part which transmits the force of the driving mechanism 8 to the push rod 2. The main transmission unit may be a link mechanism or a gear structure, which can transmit or transmit force.

Wherein, the main drive portion includes: the first rocker 4 and the first rocker 4 are arranged in the corresponding shaft holes of the bracket 9 through the third rotating shaft 10. When the electric coupler needs to be pushed out, the cylinder expansion part 82 extends out along the cylinder, the expansion part 82 drives the first rotating shaft 13 to move towards the direction opposite to the side where the cylinder is located, at the moment, the pushing rod 2 moves from the inclined state to the horizontal state, so that the horizontal distance between the electric coupler rotating shaft 16 and the third rotating shaft 10 is increased, and the electric coupler 1 is pushed out. When the expansion portion 82 moves to the maximum stroke, the electric coupler 1 is pushed out to the coupling position.

The main transmission parts shown in fig. 2 to 4 are all four-bar linkages, and in practical applications, the main transmission parts may be in the form of multi-bar linkages or single-bar linkages, depending on practical situations, and are not limited to four-bar linkages.

Preferably, the transmission part further comprises a support arm 3, and the main transmission part drives the push rod 2 and the support arm 3 to be folded with each other toward the side of the driving mechanism 8 when the telescopic part 82 is retracted.

The supporting arm 3 and the first rocking bar 4 form a fixed V-shaped bar structure through a third rotating shaft 10 and then are hinged with the bracket 9. The supporting arm 3 and the first rocking bar 4 can be of an integrated V-shaped bar structure, and can also be of a structure which is formed by independent bars and can rotate simultaneously, and the relative angle of the structure is fixed and unchanged. Depending on the specific dimensioning of the pushing device, the position of the third shaft 10 in the vertical direction Y may be the same as the position of the electrical coupler shaft 16, or slightly lower or higher than the position of the electrical coupler shaft 16.

When the electric coupler moves to a coupling position, an angle alpha formed by the connection of the push rod 2 and the supporting arm 3 meets alpha more than 180 degrees so as to realize the self-locking of the electric coupler. The angle α is preferably such that 180 ° < α < 185 ° or 180 ° < α < 195 ° is satisfied, so that when the external force pushes the electric coupler 1, the main horizontal component of the force of the electric coupler reaction and the first rotating shaft 13 will be transferred from the supporting arm 3, the third rotating shaft 10 to the bracket 9, and only a small vertical component will be transferred to the cylinder. That is, most of the reaction force forming the self-locking is provided by the support 9, only a small part of the reaction force comes from the cylinder limiting device, the stress distribution is favorable for reducing the destructive force on the cylinder, the condition of providing larger supporting force for the electric coupler is provided, and the stability of connection of the electric coupler is favorably maintained.

In fig. 4, in the coupling position, the pushing rod 2 is in a substantially horizontal state, and the supporting arm 3 is inclined upward at a small angle. The pushing rod 2 is in an approximately horizontal state and is consistent with the movement direction of the electric coupler 1, so that the pushing direction on the pushing rod 2 is consistent with the direction of the sliding guide rail of the electric coupler 1, the abrasion of the sliding guide rail is reduced, the vertical destructive force born by the electric coupler 1 is reduced, and the stable structure of the electric coupler 1 is favorably maintained. And the thrust of the push rod 2 is vertical to the coupling surface of the electric coupler 1, so that the contacts on the left side and the right side of the electric coupler 1 can be stably contacted. Horizontal as used herein refers to a substantially horizontal, substantially horizontal orientation; likewise, the direction of the guideway for the coupling 1 is also only approximately the same or essentially the same direction of the position. According to the specific size design of the pushing device, the pushing rod 2 and the supporting arm 3 can also be in other states which can meet the requirement that the angle alpha is more than 180 degrees, and the angle alpha is preferably more than 180 degrees and less than 185 degrees or more than 180 degrees and less than alpha and less than 195 degrees.

As can be seen from fig. 2 to 4, in the extending and retracting movement process of the electrical coupler, the movement locus of the first rotating shaft 13 is substantially below the connecting line of the rotating shaft 16 of the electrical coupler and the third rotating shaft 10, which reduces the space requirement in the movement process of the pushing device, saves the upper space of the pushing device of the electrical coupler, and makes the design of the pushing device of the electrical coupler more compact.

Preferably, the main transmission part also comprises a second rocker 7 and a connecting rod 5. The second rocker 7 is arranged on the bracket 9 through a second rotating shaft 11. The connecting rod 5 is connected between the first rocker 4 and the second rocker 7, the connecting rod 5 is connected with the first rocker 4 through a shaft and connected with the fourth rotating shaft 17, and the connecting rod 5 is connected with the second rocker 7 through a shaft and connected with the fifth rotating shaft 18. In the vertical direction Y, the second rotating shaft 11 is located at the lower part of the third rotating shaft 10, and the line connecting the third rotating shaft 10 and the second rotating shaft 11 is substantially perpendicular to the moving direction of the electric coupler 1. In practical application, according to requirements such as spatial position, a connecting line of the third rotating shaft 10 and the second rotating shaft 11 may not be perpendicular to the moving direction of the electric coupler 1, and the same effect can be achieved by adjusting the lengths of the first rocker 4, the second rocker 7, the connecting rod 5 and the like.

Preferably, the electric coupler 1 and the fixing part 81 of the driving mechanism 8 are located on the same side of the third rotating shaft 10 and the second rotating shaft 11 of the main transmission part. The design enables the size of the electric coupler pushing device in the horizontal direction X to be reduced, miniaturization of the electric coupler pushing device is achieved, and therefore installation of the electric coupler pushing device can be achieved in a small installation space.

Wherein, the rotation direction of first rocker 4 and second rocker 7 is opposite, and main drive division constitutes reverse double-rocker mechanism, has realized that push rod 2, support arm 3 are folding to the pusher is inboard to make whole pusher compacter, reduced the space requirement in the pusher motion process. Meanwhile, the reverse double-rocker mechanism also realizes synchronous extension and retraction of the air cylinder and the electric coupler 1, eliminates dust and corrosion of a piston rod, improves the reliability of the pushing device and reduces the failure rate of products.

Preferably, the transmission mechanism further comprises a rotating arm 6 connected to the second rocker 7 of the main transmission part, the second rocker 7 and the rotating arm 6 are rotatably connected to the second rotating shaft 11, and the other end of the rotating arm 6 is connected to the telescopic part 82 through a sixth rotating shaft 19. The second rocker 7 and the rotating arm 6 form a fixed V-shaped rod structure through a second rotating shaft 11 and are hinged with the bracket 9. The second rocker 7 and the rotating arm 6 may be an integral V-shaped rod structure, or may be formed by separate rods, and the two rods can rotate simultaneously and have a fixed relative angle. When the telescopic part 82 of the cylinder is pushed out, the telescopic part 82 drives the rotating arm 6 and the connecting rod 7 to swing to the position shown in fig. 6.

Fig. 5 shows the retracted state of the electric coupler 1. When the pushing cylinder retracts, acting force is exerted on the rotating arm 6, the rotating arm 6 and the second rocker 7 rotate clockwise around the second rotating shaft 11, and the first rocker 4 and the supporting arm 3 are driven to rotate anticlockwise around the third rotating shaft 10 through the connecting rod 5, so that the electric coupler 1 is retracted. The pushing rod 2 and the supporting arm 3 are folded towards the inner side of the pushing device, and the space requirement in the movement process of the pushing device is reduced.

Fig. 6 shows the electric coupler 1 in an extended state. When the pushing cylinder extends out, acting force is exerted on the rotating arm 6, the rotating arm 6 and the second rocker 7 rotate anticlockwise around the second rotating shaft 11, the first rocker 4 and the supporting arm 3 are driven by the connecting rod 5 to rotate clockwise around the third rotating shaft 10, and the electric coupler 1 is pushed out.

Preferably, the pushing device has a limit design to prevent the electric coupler from retracting under external force. The limit design of the pushing device has three embodiments.

In the first embodiment, the push rod 2 is provided with a limiting structure, and the limiting structure and the support arm 3 of the transmission mechanism form a fixed self-locking angle, so that the retraction of the electric coupler is prevented, and reliable self-locking is realized. Fig. 5-6 show a schematic drawing of a retraction structure and a schematic drawing of a push-out structure of an electric coupler pushing device according to the embodiment. In fig. 6, after the electric coupler 1 is pushed out to the coupling position, the angle α between the pushing rod 2 and the supporting arm 3 is greater than 180 degrees, and the first limit block 14 is in contact with the supporting arm 3. When external force acts on the electric coupler 1, the pushing rod 2 applies load to the supporting arm 3, so that the supporting arm 3 and the first rocker 4 tend to rotate clockwise, but the first limiting block 14 contacts with the supporting arm 3 to limit the rotation of the supporting arm, so that the electric coupler 1 is prevented from retracting, and reliable self-locking is realized.

The scheme of adopting the limit structure to realize the reliable self-locking of the electric coupler 1 eliminates the influence of the gap of the hinged part of each connecting rod and the rigidity of the connecting rod on the position of the electric coupler and improves the self-locking stability.

In the second embodiment, the second limiting block 15 is disposed on the supporting arm 3 of the transmission mechanism, as shown in fig. 7-8, when the electric coupler 1 is pushed out to the coupling position, the push rod 2 contacts with the second limiting block 15 on the supporting arm 3 to form a fixed self-locking angle, so that reliable self-locking of the push device is realized. The limiting structure is arranged on the supporting arm 3 of the transmission mechanism, so that the influence of the gaps of the hinged parts of the connecting rods and the rigidity of the connecting rods on the position of the electric coupler can be eliminated, and the self-locking stability is improved.

In the second embodiment, a mode of simultaneously arranging the limiting structures on the pushing rod 2 and the supporting arm 3 can also be adopted to realize reliable self-locking.

In the third embodiment, self-locking of the driving mechanism 8 is adopted, when an external force pushes the electric coupler 1 at the coupling position, the pushing rod 2 applies a load to the supporting arm 3, so that the supporting arm 3 and the first rocker 4 tend to rotate clockwise, and the second rocker 7 and the rotating arm 6 tend to rotate counterclockwise under the driving of the connecting rod 5, so that the pushing cylinder tends to be pulled, and as the cylinder extends to the maximum stroke position, the telescopic part 82 of the cylinder cannot extend continuously, so that retraction of the electric coupler 1 is prevented, and self-locking is realized. However, due to the influence of the gaps of the hinge parts of the connecting rods and the rigidity of the connecting rods, the position of the electric coupler in the coupling position is greatly changed when an external acting force is applied to the electric coupler, and the connection reliability of the electric coupler 1 is influenced.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the pushing rod 2 and the supporting arm 3 are folded towards the inner side of the pushing device, so that the space requirement of the pushing device in the movement process is reduced; the pushing cylinder and the electric coupler 1 synchronously extend and retract, so that dust and corrosion of a piston rod are eliminated, the reliability of the pushing device is improved, and the failure rate of products is reduced; after the electric coupler 1 extends out, the angle between the pushing rod 2 and the supporting arm 3 is larger than 180 degrees, the first limiting block 14 and the supporting arm 3 form a fixed self-locking angle, the scheme of arranging the limiting structure eliminates the influence of the gap of the hinged part of each connecting rod and the rigidity of the connecting rod on the position of the electric coupler, and the self-locking stability is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. An electrical coupler pushing device, comprising: a support (9); the driving mechanism (8) comprises a fixing part (81) and a telescopic part (82) which are borne on the support (9), and the telescopic part (82) extends out of or retracts back from the fixing part (81) to realize different working states of the pushing device; a transmission mechanism connected with the telescopic part (82); push rod (2), the one end of push rod (2) with electric coupler rotates to be connected in electric coupler pivot (16), push rod (2) other end with drive mechanism rotates to be connected in first pivot (13), its characterized in that, drive mechanism sets up to when pars contractilis (82) withdraw push rod (2) withdraw the in-process that push rod (2) were withdrawn, push rod (2) with drive mechanism rotates first pivot (13) of being connected to the direction motion of actuating mechanism (8) place one side.

2. The pushing device of the electrical coupler according to claim 1, wherein the transmission mechanism comprises a main transmission part, the main transmission part transmits the force of the driving mechanism (8) to the pushing rod (2), the pushing rod (2) drives the electrical coupler to extend to the coupling position when the telescopic part (82) extends, and the pushing rod (2) drives the electrical coupler to retract when the telescopic part (82) retracts.

3. Electric coupler pushing device according to claim 2, characterized in that the transmission mechanism further comprises a support arm (3) arranged on one side of the pushing rod (2).

4. Electric coupler pushing device according to claim 3, wherein the main transmission part drives the pushing rod (2) and the supporting arm (3) to fold each other towards the side of the driving mechanism (8) when the telescopic part (82) is retracted.

5. Electrical coupler pushing device according to claim 3, characterized in that the main transmission part comprises a first rocker (4) on the side of the support arm; the first rocker (4) is arranged on the bracket (9) through a third rotating shaft (10).

6. The push device of an electrical coupler according to claim 5, wherein the main transmission part further comprises a second rocker (7) on the push rod (2) side, a second rotating shaft (11) for arranging the second rocker (7) on the bracket (9), and a connecting rod (5) connected between the first rocker (4) and the second rocker (7).

7. The electric coupler pushing device as claimed in claim 6, wherein the first rocker (4) and the second rocker (7) rotate in opposite directions.

8. Electric coupler pushing device according to claim 6, characterized in that the second rotating shaft (11) is located at the lower part of the third rotating shaft (10) in the vertical direction (Y).

9. The push device of an electric coupler according to claim 8, wherein the main transmission part further comprises a rotating arm (6) connected to the second rocker (7), the second rocker (7) and the rotating arm (6) are rotatably connected to the second rotating shaft (11), and the other end of the rotating arm (6) is connected to the telescopic part (82).

10. The electrical coupler pushing arrangement of claim 3, further comprising a limit stop arrangement to limit retraction of the electrical coupler.

11. Electrical coupler pushing device according to claim 10, characterized in that the limit structure is arranged on the pushing rod (2) and forms a fixed self-locking angle with the support arm (3) of the transmission mechanism.

12. The push device for the electric coupler according to claim 10, wherein a limit structure is arranged on the supporting arm (3), or a limit structure is arranged on the supporting arm (3) and the push rod (2).

13. The electrical coupler pushing device as claimed in any one of claims 10 to 12, wherein the limiting structure is a limiting block.

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