CN220720822U

CN220720822U - Double-boot current collector and railway vehicle

Info

Publication number: CN220720822U
Application number: CN202322529465.3U
Authority: CN
Inventors: 欣向荣; 莫永成; 陶芸民; 霍科屹
Original assignee: Mersen Electrical Protection System Shanghai Co ltd
Current assignee: Mersen Electrical Protection System Shanghai Co ltd
Priority date: 2023-09-18
Filing date: 2023-09-18
Publication date: 2024-04-05
Anticipated expiration: 2033-09-18

Abstract

The utility model discloses a double-boot current collector and a railway vehicle, which comprise a base, a current collecting mechanism and at least one elastic piece, wherein the base is used for being connected with an installation part, and the current collecting mechanism is used for contacting with a power supply part for current collection; the current receiving mechanism is rotationally connected to the base, one end of the elastic piece is connected with the base, the opposite other end of the elastic piece is connected with the current receiving mechanism, and the elastic piece gives the current receiving mechanism an elastic force which rotates towards the power supply part. According to the utility model, the elastic tension of the tension springs gives the current-receiving mechanism an elastic force rotating towards the power supply part, so that the current-receiving mechanism is more reliable, the current-receiving mechanism comprises the swinging piece, the two swinging arms and the current-receiving shoe assembly, the tension springs are arranged between the two swinging arms, so that a plurality of tension springs can be arranged, and even if one tension spring fails accidentally, the other tension springs can continue to give the elastic tension for the current-receiving mechanism to work normally.

Description

Double-boot current collector and railway vehicle

Technical Field

The utility model belongs to the technical field of current collectors, and particularly relates to a double-boot current collector and a railway vehicle.

Background

The current collector is a device mounted on a bogie of a train and slides on a rigid power supply rail to obtain electric current. The current of the power grid above the vehicle is received through the pantograph, the space is large, and as the vehicle is contacted with the track beam by adopting the rubber wheels, positive and negative power grids are required to be paved for supplying power to the vehicle, and the feasibility of the foundation construction is poor. Another type of power supply to the contact rail is that conventional steel wheel subways typically supply power through a third rail beside the vehicle and back through the vehicle running rail. Because the monorail vehicle adopts rubber wheel drive to move on the cement track beam, in order to simplify the infrastructure, the constructor respectively arranges the power supply and the reflux track on the left and right sides of the track beam, and when the vehicle runs in two directions, the current collector is respectively contacted with the power supply rail and the reflux rail on the left lower side and the right upper side, or is contacted with the power supply rail and the reflux rail on the right lower side and the left upper side.

The conventional single-arm current collector is required to be installed at the upper part of the power supply rail, and cannot provide current collecting and return functions when the vehicle is in bidirectional operation. Therefore, current collectors with parallelogram double-carbon sliding plates are also developed in the prior art, but the current collectors adopt torsion springs to provide contact pressure for the current collectors, and the current collectors can lose efficacy of the whole function after fatigue fracture of the torsion springs.

Disclosure of Invention

In view of the problems in the background art, an object of the present utility model is to provide a dual-boot current collector, which comprises a base, a current collector mechanism and at least one elastic member, wherein the base is used for being connected with a mounting part, and the current collector mechanism is used for contacting with a power supply part for current collection;

the current receiving mechanism is rotationally connected to the base, one end of the elastic piece is connected with the base, the opposite other end of the elastic piece is connected with the current receiving mechanism, and the elastic piece gives the current receiving mechanism an elastic force which rotates towards the power supply part.

Preferably, the current-receiving mechanism comprises a swinging piece, two swinging arms and a current-receiving shoe assembly, wherein the swinging piece and the swinging arms are both insulating pieces, and the current-receiving shoe assembly is used for contacting with the power supply part to receive current;

the first end of the swinging piece is rotationally connected with the base, and the opposite second end of the swinging piece is rotationally connected with the current-collecting shoe component;

the two swing arms are respectively arranged on two sides of the swing piece and are positioned on one side of the swing piece, which faces the power supply part, the swing arms are arranged in parallel with the swing piece, two ends of the swing arms are respectively connected with the base and the current-collecting shoe assembly in a rotating way, and the elastic piece is arranged between the two swing arms.

Preferably, the current-collecting shoe assembly comprises two current-collecting shoes, the two current-collecting shoes are connected through an insulating bracket, and two sides of the second end of the swinging piece are respectively connected with the two current-collecting shoes in a rotating mode.

Preferably, the current-collecting boot comprises a current-collecting slide plate and a slide plate support, wherein the current-collecting slide plate is arranged on the slide plate support, the slide plate support and the current-collecting slide plate are made of conductive materials, and the swinging piece and the swinging arm are connected with the slide plate support.

Preferably, the swing device comprises two conductive cables which are respectively arranged at two sides of the swing piece, wherein the two conductive cables are respectively connected with the two slide plate brackets in a conductive manner, and two ends of the conductive cables are respectively fixed on the base and the slide plate brackets through a wire clamp.

Preferably, the elastic piece is a tension spring, and is arranged on one side of the swinging piece facing the power supply part, and two ends of the tension spring are respectively connected with the base and the swinging piece in a rotating way.

Preferably, two tension springs are arranged.

Preferably, the swinging piece, the swinging arm, the base and the current-receiving boot are connected through damping rotation joints;

the shock absorbing rotational joint includes:

the rotating shaft is fixedly arranged on the base or the current-collecting boot;

the inner shaft sleeve is sleeved and fixedly connected with the rotating shaft;

the flexible damping sleeve is sleeved on the inner shaft sleeve;

the self-lubricating bearing is sleeved on the flexible damping sleeve;

the outer shaft sleeve is sleeved and fixedly connected with the self-lubricating bearing, and the swinging piece or the swinging arm is sleeved and fixedly connected with the outer shaft sleeve.

Preferably, a first adjusting piece is arranged between the base and the swinging piece, the first adjusting piece is arranged on one side of the swinging piece, which faces the power supply part, the first adjusting piece is penetrated and connected with the base in a threaded manner, and one end of the first adjusting piece is abutted against the swinging piece;

the swing arm is characterized in that a second adjusting piece is arranged between the swing piece and the swing arm, the second adjusting piece is arranged on one side, away from the power supply part, of the swing arm, the second adjusting piece is arranged in a penetrating mode and is in threaded connection with the swing piece, and one end of the second adjusting piece is abutted to the swing arm.

Preferably, the first adjusting piece and the second adjusting piece are adjusting bolts, and the adjusting bolts are abutted to the swinging piece or one end of the swinging arm is provided with a rubber pad.

Preferably, the base is provided with a locking assembly located at the first end of the swinging member, the first end of the swinging member is provided with a locking matching portion, and the locking assembly is used for being matched with the locking matching portion to block the swinging member from rotating towards the power supply portion.

Preferably, the locking matching part is a stop block, the base is provided with two first mounting lugs and two second mounting lugs which are arranged at intervals, and the first end of the swinging piece is arranged between the first mounting lugs and the second mounting lugs;

the locking assembly includes:

the locking rod is penetrated through and connected to the first mounting lug in a sliding way, the locking rod can slide towards the second mounting lug, and when the locking rod slides to the second mounting lug, the locking rod and one end face of the stop block, which is far away from the power supply part, are matched to stop the swinging piece from rotating towards the power supply part;

the locking pin is fixedly arranged on the second mounting lug and is arranged towards the locking rod, a locking pin hole is formed in one end face of the locking rod, which faces towards the locking pin, and the locking pin can be inserted into the locking pin hole to be in interference fit with the locking pin so as to fix the locking rod on the second mounting lug;

the spring is sleeved on the locking rod, a fixing head is arranged at one end, away from the locking pin, of the locking rod, and the spring is arranged between one end face, away from the second mounting lug, of the first mounting lug and the fixing head and gives an elastic force, away from the locking pin, of the locking rod.

Based on the same conception, the utility model also provides a railway vehicle, which comprises the double-boot current collector.

By adopting the technical scheme, the utility model has the following advantages and positive effects compared with the prior art:

1. according to the utility model, the elastic tension of the tension springs gives the current-receiving mechanism an elastic force rotating towards the power supply part, so that the current-receiving mechanism is more reliable, the current-receiving mechanism comprises the swinging piece, the two swinging arms and the current-receiving shoe assembly, the tension springs are arranged between the two swinging arms, so that a plurality of tension springs can be arranged, and even if one tension spring fails accidentally, the other tension springs can continue to give the elastic tension for the current-receiving mechanism to work normally.

2. The swinging piece and the swinging arm are connected with the base and the current-receiving boot through the damping rotating joint, and the flexible damping sleeve is arranged in the damping rotating joint, so that the impact transmitted to the rotating joint during working can be absorbed by the flexible damping sleeve, and the service life is longer.

3. According to the utility model, the two ends of the conductive cable are respectively fixed on the base and the slide plate bracket through the wire clamp, so that the conductive cable has enough strength support, and the long-term reliable service life of the conductive cable under the dynamic condition is ensured.

4. The utility model has the advantages that the first adjusting piece is arranged between the base and the swinging piece, the second adjusting piece is arranged between the swinging piece and the swinging arm, the first adjusting piece can limit the position of the swinging piece and can finely adjust the position of the swinging arm, the second adjusting piece can limit the position of the swinging arm and can finely adjust the position of the swinging arm, and the change of the rotation angle of the current-collecting boot caused by the micro motion due to the shock absorption deformation of the flexible shock absorption sleeve is prevented, so that the current-collecting boot is not contacted with a power supply part in place, namely, the position of the swinging piece is limited by the first adjusting piece, and the position of the swinging arm is limited by the second adjusting piece, so that the current-collecting boot is always contacted with the power supply part well. And the adjusting bolt is abutted to one end of the swinging piece or the swinging arm and is provided with a rubber pad, so that a buffering effect can be achieved.

5. The base is provided with the locking component positioned at the first end of the swinging piece, the first end of the swinging piece is provided with the locking matching part, and the locking component is used for being matched with the locking matching part to stop the swinging piece from rotating towards the power supply part, so that when the current receiving mechanism needs to be separated from the power supply part or overhauled, the current receiving mechanism can be lifted manually, and the current receiving mechanism is locked by the locking component.

Drawings

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic diagram of the whole of the present utility model;

FIG. 2 is a second overall schematic of the present utility model;

FIG. 3 is a third overall schematic of the present utility model;

FIG. 4 is a schematic diagram of the whole of the present utility model;

FIG. 5 is a schematic view of a parallelogram structure of the present utility model;

FIG. 6 is a schematic view of a swing member of the present utility model;

FIG. 7 is a schematic view of the present utility model with the wobble member removed;

FIG. 8 is a schematic view of a second adjustment member according to the present utility model;

FIG. 9 is a schematic view of a first adjustment member according to the present utility model;

FIG. 10 is a schematic view of a locking assembly of the present utility model;

FIG. 11 is a schematic view of a shock absorbing rotary joint according to the present utility model;

fig. 12 is a cross-sectional view of a damped rotary joint according to the present utility model.

Reference numerals illustrate:

1. a base; 2. a swinging member; 3. a swing arm; 4. a current collector shoe; 5. a current receiving slide plate; 6. a skateboard bracket; 7. an electrically conductive cable; 8. a wire clamp; 9. a tension spring; 10. damping the rotation joint; 11. a rotating shaft; 12. an inner sleeve; 13. a flexible damping sleeve; 14. self-lubricating bearings; 15. an outer sleeve; 16. a first adjustment member; 17. a second adjusting member; 18. a rubber pad; 19. a stop block; 20. a first mounting ear; 21. a second mounting ear; 22. a locking lever; 23. a locking pin; 24. an insulating support.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the specific examples. The advantages and features of the present utility model will become more apparent from the following description. It is noted that the drawings are in a very simplified form and utilize non-precise ratios, and are intended to facilitate a convenient, clear, description of the embodiments of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Example 1

With reference to fig. 1 to 12, the core of the present utility model is to provide a dual boot current collector comprising a base 1, a current collector mechanism and at least one elastic member, the base 1 being adapted to be connected to a mounting location, in particular a train bogie. The current receiving mechanism is used for contacting with the power supply part to receive current, the current receiving mechanism is rotationally connected to the base 1, one end of the elastic piece is connected with the base 1, the opposite other end of the elastic piece is connected with the current receiving mechanism, the elastic piece gives the current receiving mechanism elastic force which rotates towards the power supply part, and the power supply part is a power supply rail.

The current-receiving mechanism comprises a swinging piece 2, two swinging arms 3 and a current-receiving shoe 4 component, wherein the swinging piece 2 and the swinging arms 3 are insulating pieces and are made of SMC materials, the current-receiving shoe 4 component is used for being in contact with a power supply rail for current receiving, and the swinging piece 2 and the swinging arms 3 are supporting bodies of the current-receiving shoe component and ensure reliable insulation of a vehicle power supply high-voltage loop on a bogie and a vehicle body. The first end of the swinging member 2 is rotationally connected with the base 1, the opposite second end is rotationally connected with the current-collecting shoe 4 assembly, the two swinging arms 3 are respectively arranged on two sides of the swinging member 2 and are positioned on one side of the swinging member 2 facing the power supply rail, the swinging arms 3 are arranged in parallel with the swinging member 2, two ends of the swinging arms are respectively rotationally connected with the base 1 and the current-collecting shoe 4 assembly, and the elastic piece is arranged between the two swinging arms 3.

Further, the current-collecting shoe 4 assembly comprises two current-collecting shoes 4, the two current-collecting shoes 4 are respectively connected with the anode and the cathode, the two current-collecting shoes 4 are connected through an insulating bracket 24, and two sides of the second end of the swinging piece 2 are respectively connected with the two current-collecting shoes 4 in a rotating mode. Further, the current-collecting shoe 4 comprises a current-collecting slide plate 5 and a slide plate support 6, the current-collecting slide plate 5 is arranged on the slide plate support 6, the slide plate support 6 and the current-collecting slide plate 5 are made of conductive materials, the current-collecting slide plate 5 is used for contacting with a power supply rail to collect current, and the swinging piece 2 and the swinging arm 3 are both in rotary connection with the slide plate support 6.

Referring to fig. 5, the swing member 2 and the two swing arms 3 form a parallelogram structure to ensure that the current collector slide plate 5 is substantially parallel to the power supply rail under various movement conditions of the vehicle, and ensure reliable contact and uniform wear of the current collector slide plate 5 and the power supply rail.

The two conductive cables 7 are respectively arranged on two sides of the swinging piece 2, the two conductive cables 7 are respectively connected with the two slide plate brackets 6 in a conductive manner, and two ends of each conductive cable 7 are respectively fixed on the base 1 and the slide plate brackets 6 through one wire clamp 8, so that the conductive cables 7 have enough strength support, and the long-term reliable service life of the conductive cables 7 under dynamic conditions is ensured.

The elastic component is extension spring 9, locates the one side towards the power supply rail of swinging member 2, and the both ends of extension spring 9 rotate respectively and connect in base 1 and swinging member 2 towards the terminal surface of power supply rail. In this embodiment, two tension springs 9 are provided, but there may be more tension springs in other embodiments, which is not limited herein. The tension spring 9 enables the current-receiving slide plate 5 to keep a certain-range contact positive pressure on the power supply rail, so that dynamic stable and reliable current receiving of the train is realized, and power supply guarantee is provided for stable operation of the train.

The swinging piece 2, the swinging arm 3, the base 1 and the slide plate bracket 6 are connected through a damping rotating joint 10, and the damping rotating joint 10 comprises a rotating shaft 11, an inner shaft sleeve 12, a flexible damping sleeve 13, a self-lubricating bearing 14 and an outer shaft sleeve 15. The rotating shaft 11 is fixedly arranged on the base 1 or the sliding plate support 6, the inner shaft sleeve 12 is sleeved and fixedly connected with the rotating shaft 11, the flexible damping sleeve 13 is sleeved on the inner shaft sleeve 12, the self-lubricating bearing 14 is sleeved on the flexible damping sleeve 13, the outer shaft sleeve 15 is sleeved and fixedly connected with the self-lubricating bearing 14, the swinging piece 2 or the swinging arm 3 is sleeved and fixedly connected with the outer shaft sleeve 15, and the flexible damping sleeve 13 is made of rubber materials. Referring to fig. 12, in this embodiment, two self-lubricating bearings 14 are provided, which are sequentially disposed at two ends of the flexible damping sleeve 13 along the length direction, and two inner sleeves 12 are also provided, which are sequentially disposed at two ends of the flexible damping sleeve 13 along the length direction, and of course, in other embodiments, only one long self-lubricating bearing 14 and inner sleeve 12 may be disposed, and in this embodiment, two sets are divided for more convenient installation.

The flexible damping sleeve 13 is arranged in the damping rotary joint 10, so that the impact transmitted to the rotary joint during operation can be absorbed by the flexible damping sleeve 13, and the damping rotary joint has stronger impact resistance and longer service life. Because the double boot current collector is subjected to a large impact when passing through the joint due to the third rail insulated joint and the switch design.

Further, a first adjusting piece 16 is arranged between the base 1 and the swinging piece 2, the first adjusting piece 16 is arranged on one side of the swinging piece 2 facing the power supply rail, the first adjusting piece 16 is penetrated and connected with the base 1 in a threaded manner, and one end of the first adjusting piece 16 is abutted against the swinging piece 2; a second adjusting piece 17 is arranged between the swinging piece 2 and the swinging arm 3, the second adjusting piece 17 is arranged on one side of the swinging arm 3 far away from the power supply rail, the second adjusting piece 17 is penetrated and connected with the swinging piece 2 in a threaded manner, and one end of the second adjusting piece 17 is abutted against the swinging arm 3.

Specifically, the first adjusting member 16 and the second adjusting member 17 are adjusting bolts, and a rubber pad 18 is disposed at one end of the adjusting bolts abutting against the swinging member 2 or the swinging arm 3.

The utility model has the advantages that the first adjusting piece 16 is arranged between the base 1 and the swinging piece 2, the second adjusting piece 17 is arranged between the swinging piece 2 and the swinging arm 3, the first adjusting piece 16 can limit the position of the swinging piece 2 and can finely adjust the position of the swinging arm 3, the second adjusting piece 17 can limit the position of the swinging arm 3 and can finely adjust the position of the swinging arm, the change of the rotation angle of the current-collecting shoe 4 caused by the micro motion due to the shock absorption deformation of the flexible shock absorption sleeve 13 is prevented, so that the current-collecting shoe 4 cannot be contacted with a power supply part, namely, the position of the swinging piece 2 is limited by the first adjusting piece 16, the position of the swinging arm 3 is limited by the second adjusting piece 17, the current-collecting shoe 4 can be always contacted with the power supply part well, and the parallelism of the current-collecting shoe 4 and the power supply rail can be effectively ensured. And the adjusting bolt is abutted against one end of the swinging piece 2 or the swinging arm 3 and is provided with a rubber pad 18, so that a buffering effect can be achieved.

Further, a locking component located at the first end of the swinging member 2 is arranged on the base 1, a locking matching portion is arranged at the first end of the swinging member 2, and the locking component is used for being matched with the locking matching portion to prevent the swinging member 2 from rotating towards the power supply rail.

Specifically, the locking matching portion is a stop 19, two first mounting ears 20 and second mounting ears 21 are arranged on the base 1 at intervals, and a first end of the swinging member 2 is arranged between the first mounting ears 20 and the second mounting ears 21. The locking assembly comprises a locking lever 22, a locking pin 23 and a spring (not shown in the figures). The locking rod 22 is penetrated through and is connected to the first mounting lug 20 in a sliding manner, the locking rod 22 can slide towards the second mounting lug 21, and when the locking rod 22 slides to the second mounting lug 21, the locking rod 22 and one end face of the stop block 19 away from the power supply rail are matched to stop the swinging piece 2 from rotating towards the power supply rail. The locking pin 23 is fixedly arranged on the second mounting lug 21 and is arranged towards the locking rod 22, a locking pin 23 hole is formed in one end face of the locking rod 22, which faces the locking pin 23, and the locking pin 23 can be inserted into the locking pin 23 hole to be in interference fit with the locking pin 23 hole so that the locking rod 22 is fixed on the second mounting lug 21. The spring is sleeved on the locking rod 22, a fixed head is arranged at one end of the locking rod 22 far away from the locking pin 23, and the spring is arranged between one end face of the first mounting lug 20 far away from the second mounting lug 21 and the fixed head and gives elastic force to the locking rod 22 far away from the locking pin 23.

The base 1 is provided with a locking component positioned at the first end of the swinging member 2, the first end of the swinging member 2 is provided with a locking matching part, and the locking component is used for being matched with the locking matching part to stop the swinging member 2 from rotating towards the power supply part, so that when the current receiving mechanism needs to be separated from the power supply part or overhauled, the current receiving mechanism can be manually lifted, and the current receiving mechanism is locked by the locking component. In the operating state, the end of the locking lever 22 provided with the hole of the locking pin 23 is kept away from the locking pin 23 by the elastic force of the spring and kept in position, preventing it from shaking.

Another core of the present utility model is to provide a rail vehicle comprising the two-shoe current collector of embodiment 1.

The utility model provides a double-boot current collector which has light weight, small volume and compact structure and can automatically form a current loop, and has the functions of receiving current and grounding. The elastic force of rotation of the current-collecting boot 4 towards the power supply part is given through the elastic tension of the tension springs 9, so that the current-collecting boot is more reliable, the tension springs 9 are arranged between the two swinging arms 3, a plurality of tension springs 9 can be arranged, and even if one tension spring 9 fails accidentally, the other tension springs 9 can continue to give the elastic tension of the current-collecting mechanism for normal operation.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments. Even if various changes are made to the present utility model, it is within the scope of the appended claims and their equivalents to fall within the scope of the utility model.

Claims

1. The double-boot current collector is characterized by comprising a base, a current collecting mechanism and at least one elastic piece, wherein the base is used for being connected with an installation part, and the current collecting mechanism is used for contacting with a power supply part for current collecting;

2. The dual shoe current collector of claim 1, wherein the current collector mechanism comprises a swinging member, two swinging arms, and a current collector shoe assembly, the swinging member and the swinging arms being both insulators, the current collector shoe assembly being configured to contact the current collector;

3. The dual shoe current collector of claim 2 wherein said current collector shoe assembly comprises two current collector shoes connected by an insulating bracket, said two current collector shoes being rotatably connected to each other on opposite sides of said second end of said oscillating member.

4. A dual boot current collector as claimed in claim 3 wherein the current collector boot comprises a current collector slide plate and a slide plate bracket, the current collector slide plate is provided on the slide plate bracket, the slide plate bracket and the current collector slide plate are both made of conductive materials, and the swinging member and the swinging arm are both connected with the slide plate bracket.

5. The dual boot current collector of claim 4, comprising two conductive cables respectively disposed on two sides of the swinging member, wherein the two conductive cables are respectively connected with the two slide plate brackets in a conductive manner, and two ends of the conductive cables are respectively fixed on the base and the slide plate brackets through a wire clamp.

6. The double boot current collector according to claim 2, wherein the elastic member is a tension spring, which is disposed on a side of the swinging member facing the power supply portion, and two ends of the tension spring are respectively rotatably connected to the base and the swinging member.

7. The dual boot current collector of claim 6 wherein the tension spring is provided in two.

8. A dual boot current collector according to claim 3 wherein the swing member and swing arm are connected to the base and current collector boot by a damped rotational joint;

the shock absorbing rotational joint includes:

the flexible damping sleeve is sleeved on the inner shaft sleeve;

the self-lubricating bearing is sleeved on the flexible damping sleeve;

9. The double boot current collector according to claim 8, wherein a first adjusting piece is arranged between the base and the swinging piece, the first adjusting piece is arranged on one side of the swinging piece facing the power supply part, the first adjusting piece is penetrated and connected with the base in a threaded manner, and one end of the first adjusting piece is abutted against the swinging piece;

10. The dual boot current collector of claim 9, wherein the first and second adjusting members are adjusting bolts, and one end of the adjusting bolts abutting against the swinging member or the swinging arm is provided with a rubber pad.

11. The dual boot current collector of claim 2 wherein the base is provided with a locking assembly at the first end of the oscillating member, the first end of the oscillating member is provided with a locking engagement, and the locking assembly is adapted to cooperate with the locking engagement to block rotation of the oscillating member toward the power supply location.

12. The double boot current collector according to claim 11, wherein the locking fitting part is a stopper, the base is provided with two first mounting ears and two second mounting ears which are arranged at intervals, and the first end of the swinging piece is arranged between the first mounting ears and the second mounting ears;

the locking assembly includes:

13. A rail vehicle comprising a dual boot current collector according to any one of claims 1 to 12.