CN210212050U - Buffer type current collector and have its rail vehicle - Google Patents

Abstract

The utility model provides a buffer type current collector and rail vehicle who has it, a buffer type current collector includes: a base; one end of the insulating arm is rotatably arranged on the base, the mounting bracket is rotatably arranged at the other end of the insulating arm, and a flow taking sliding plate is arranged below the mounting bracket; the rotating shaft is used for connecting the insulating arm and the base, and is also used for connecting the insulating arm and the mounting bracket; and the needle bearing is arranged in the insulating arm and is connected with the rotating shaft. The utility model provides a pair of buffering type current collector can reduce the produced impact force of collision effectively, improves buffer capacity and energy-absorbing effect, each joint, structure response time when can also reducing the impact are favorable to protecting the current collector better, improve the life of current collector.

Description

Buffer type current collector and have its rail vehicle

Technical Field

The utility model belongs to the rail transit field especially relates to a buffering type current collector and rail vehicle who has it.

Background

The upper arm and the lower arm of the current flow taking device are in rigid transmission with the bearing and the base. The rigidity transmission has higher requirements on the strength and the precision of product parts, and the product parts are easy to deform or damage in the collision process.

Various joints, end elbows and the like on a circuit can cause collision with different degrees to the current collector in the running process of the locomotive, the collision is a continuous damage to the current collector, and most of the conditions for reducing the damage are that a buffering energy-absorbing scheme is directly arranged at the connection position of the carbon sliding plate. The energy absorption modes can improve the shock resistance of the product, but the connecting parts behind the carbon sliding plate buffer structure are rigid structures and still have the risks of damage and fracture.

The energy of collision is also larger along with the speed increase of the line, and the energy absorption structure of the carbon sliding plate is not enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a buffering type current collector can reduce the produced impact force of collision effectively, improves buffer capacity and energy-absorbing effect, improves the life of current collector.

According to the utility model discloses buffer type current collector, include: a base; one end of the insulating arm is rotatably arranged on the base, the mounting bracket is rotatably arranged at the other end of the insulating arm, and a flow taking sliding plate is arranged below the mounting bracket; the rotating shaft is used for connecting the insulating arm and the base, and is also used for connecting the insulating arm and the mounting bracket; and the needle bearing is arranged in the insulating arm and is connected with the rotating shaft.

From this, according to the utility model discloses buffering type current collector, through bearing with the pivot cooperatees, can reduce the produced impact force of collision effectively, improves buffer capacity and energy-absorbing effect, improves the life of current collector.

In some examples of the present invention, the insulating arm further includes an upper arm and a lower arm, the upper arm and the lower arm are both provided with the needle bearing, the upper arm includes a first shaft hole, and the first shaft hole is connected to the rotating shaft through the needle bearing; the base further comprises a second shaft hole and a third shaft hole, the second shaft hole and the third shaft hole are connected with the rotating shaft, and the inner diameter of the second shaft hole is the same as that of the third shaft hole.

In some examples of the invention, the shaft comprises: a shoulder having a length slightly greater than an inner diameter of the second shaft bore; the diameter of the shaft body is slightly smaller than the inner diameter of the second shaft hole. Therefore, through the structure and the size of the rotating shaft, the abrasion between the insulating arm and the base can be reduced, and the insulating arm and the base are protected.

In some examples of the present invention, the needle bearing further comprises a cage assembly, a needle roller, and a bearing outer race, the bearing outer race is connected to the inner side wall of the first shaft hole, and the needle roller is connected to the rotating shaft. Therefore, the structure of the needle bearing can decompose the originally concentrated impact force into multi-directional small impact force, so that the impact force can be greatly relieved, and the effects of buffering and energy absorption are achieved.

In some examples of the present invention, the roller pins are a plurality of roller pins, and the roller pins are uniformly distributed inside the bearing outer ring, and all the roller pins are connected to the rotating shaft. The plurality of rolling needles are stressed simultaneously and are multidirectional, so that the originally concentrated impact force can be decomposed into multidirectional small impact force, the impact force can be greatly relieved, and the effects of buffering and energy absorption are achieved.

In some examples of the present invention, the shaft sleeve further comprises a shaft sleeve disposed on both sides of the first shaft hole. Through increasing the axle sleeve, prevent that the insulating arm with the great result of frictional force of pivot junction the insulating arm with the pivot is damaged, improves the insulating arm with the life of pivot.

In some examples of the invention, the shaft sleeve is clearance fit with the second shaft bore and the third shaft bore. Through clearance setting, can prevent that the great result of frictional force of insulating arm with the base junction the insulating arm with the base damages, improves the insulating arm with the life of base.

In some examples of the present invention, the buffer material is disposed on the rotating shaft and/or between the needle bearing and the inner side wall of the first shaft hole. Through setting up buffer material, can make each junction of whole buffering type current collector have stronger buffering and energy-absorbing effect, be favorable to prolonging the life-span of buffering type current collector.

In some examples of the present invention, the cushioning material may be a rubber material.

The utility model also provides a rail vehicle, include: a vehicle body; buffer type current collector, buffer type current collector is according to the utility model discloses the buffer type current collector of above-mentioned embodiment, the base is established on the automobile body.

According to the utility model discloses rail vehicle through being equipped with foretell buffering type current collector, can reduce the produced impact force of collision effectively, improves buffer capacity and energy-absorbing effect, each joint, structure response time when can also reducing the impact are favorable to protecting the current collector better, improve the life of current collector.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a buffer type current collector provided in an embodiment of the present invention;

fig. 2 is a top view of a buffer type current collector provided in an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along the plane A-A in FIG. 2;

FIG. 4 is a cross-sectional view taken along the line A-A of FIG. 2 according to another embodiment;

fig. 5 is a cross-sectional view taken along the plane a-a in fig. 2 of yet another embodiment.

Reference numerals:

a buffered current collector 100;

a base 10, a second shaft hole 101 and a third shaft hole 102;

an insulating arm 20;

upper arm 21, first shaft hole 211, first shaft hole inner sidewall 2111; a lower arm 22; a shaft sleeve 23;

a mounting bracket 30, a first mounting bracket 30a, a second mounting bracket 30 b;

a flow taking slide plate 31, a first flow taking slide plate 31a and a second flow taking slide plate 31 b;

a rotating shaft 40;

a shoulder 41; shaft body 42, recess 421; a nut 43; a fastener 44;

a needle bearing 50, a retainer assembly 51, a needle 52, a bearing outer ring 53;

a buffer material 60, a first buffer material 61, and a second buffer material 62.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "vertical", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limitingIs a limitation of the present invention. Wherein the content of the first and second substances,xthe axial direction is a transverse direction,xthe positive direction of the axis is the right direction,xthe axial negative direction is left;ythe axial direction is the longitudinal direction,ythe positive direction of the axis is the front direction,ythe negative axis direction is back;zthe axial direction is vertical or vertical,zthe positive direction of the axis is upward,zthe axial negative direction is lower;xOythe plane is the horizontal plane, and the horizontal plane,yOzthe plane is the vertical plane in the longitudinal direction,xOzi.e. the transverse vertical plane. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A buffer type current collector 100 and a rail vehicle having the same according to an embodiment of the present invention are described in detail below with reference to fig. 1 to 5. The rail vehicle includes a vehicle body and a buffer type current collector 100, wherein the current collector 100 may be provided on the vehicle body of the rail vehicle. The buffer current collector 100 can be electrically connected to a current supplier to take current, so that the buffer current collector 100 can supply power to the rail vehicle.

As shown in fig. 1-2, a buffer-type current collector 100 according to an embodiment of the present invention includes: base 10, insulating arm 20, mounting bracket 30, axle 40 and needle bearing 50. Wherein the base 10 is fixed to the vehicle body, in some embodiments, the base 10 may be fixed to the vehicle body by a bolt assembly or the like.

One end of the insulation arm 20 is rotatably disposed on the base 10, i.e. the insulation arm 20 is rotatable relative to the base 10. The mounting bracket 30 is rotatably provided at the other end of the insulating arm 20, and a flow taking slide plate 31 is provided below the mounting bracket 30.

In some embodiments, as shown in fig. 1-2, there are two mounting brackets 30, a first mounting bracket 30a and a second mounting bracket 30 b. A first mounting bracket 30a and a second mounting bracket 30b are rotatably provided at the other end of the insulating arm 20. A first flow taking sliding plate 31a is arranged below the first mounting bracket 30a, and a second flow taking sliding plate 31b is arranged below the second mounting bracket 30 b. The first current-taking sliding plate 31a and the second current-taking sliding plate 31b can be electrically connected with a current-donating device for taking current so as to ensure the power supply of the rail vehicle in the running process.

The shaft 40 is used to connect the insulating arm 20 and the base 10, and the shaft 40 is also used to connect the insulating arm 20 and the mounting bracket 30. The needle bearing 50 is disposed in the insulating arm 20 and connected to the rotating shaft 40.

In some embodiments, as shown in fig. 1-2, the shaft 40 can be used to connect the first mounting bracket 30a to the insulating arm 20, the shaft 40 can also be used to connect the second mounting bracket 30b to the insulating arm 20, and the shaft 40 can also be used to connect the insulating arm 20 to the base 10. The needle bearing 50 is disposed in the insulating arm 20 and connected to the rotating shaft 40. Therefore, the first mounting bracket 30a and the second mounting bracket 30b can rotate around the insulating arm 20 through the rotating shaft 40 and the needle bearing 50, the insulating arm 20 can also rotate around the base 10 through the rotating shaft 40 and the needle bearing 50, and the internal structure of the needle bearing 50 can effectively decompose impact force and has good buffering effect.

In the running process of the rail vehicle, along with the acceleration of the rail vehicle, various joints, end elbows and the like on the line can cause collision of different degrees to the flow taking device in the running process of the rail vehicle. From this, according to the utility model discloses a buffer type current collector 100 through setting up pivot 40 and bearing 50, can reduce the produced impact force of collision effectively, improves buffer capacity and energy-absorbing effect, each joint, structure response time when can also reducing the impact are favorable to protecting the current collector better, improve the life of current collector.

In some embodiments, as shown in fig. 1-5, the insulation arm 20 further includes an upper arm 21 and a lower arm 22, the upper arm 21 and the lower arm 22 are both provided with needle bearings 50, the upper arm 21 includes a first shaft hole 211, and the first shaft hole 211 is connected with the rotating shaft 40 through the needle bearings 50. The base 10 further includes a second shaft hole 101 and a third shaft hole 102, the second shaft hole 101 and the third shaft hole 102 are connected to the rotating shaft 40, and the inner diameters of the second shaft hole 101 and the third shaft hole 102 are the same.

In some embodiments, as shown in fig. 1-5, upper arm 21 and lower arm 22 are each connected to a first mounting bracket 30a and a second mounting bracket 30 b. That is, the first and second mounting brackets 30a and 30b can rotate about the upper and lower arms 21 and 22. The upper arm 21 includes a first shaft hole 211, and the base 10 further includes a second shaft hole 101 and a third shaft hole 102. The rotating shaft 40 can be inserted through the first shaft hole 211, the second shaft hole 101 and the third shaft hole 102, and the upper arm 21 and the base 10 can be rotatably fixed by the nut 43 and the fastener 44. Thereby, the upper arm 21 and the base 10 are rotatably connected, and the flexibility of the buffer type current collector 100 is increased.

In some embodiments, as shown in FIGS. 3-5, the shaft 40 further includes a shoulder 41 and a shaft body 42. The length of the shoulder 41 is slightly greater than the inner diameter of the second shaft bore 101. The diameter of the shaft body 42 is slightly smaller than the inner diameter of the second shaft hole 101. Since the inner diameters of the second shaft hole 101 and the third shaft hole 102 are the same, that is, the length of the shoulder 41 is slightly larger than the inner diameter of the third shaft hole 102, and the diameter of the shaft body 42 is slightly smaller than the inner diameter of the third shaft hole 102. Therefore, the shaft shoulder 41 is slightly larger than the inner diameter of the second shaft hole 101, so that the rotating shaft 40 cannot slide from the second shaft hole 101 or the third shaft hole 102 when being connected with the first shaft hole 211, the second shaft hole 101 and the third shaft hole 102, thereby causing potential safety hazards. The diameter of the shaft body 42 is slightly smaller than the inner diameter of the second shaft hole 101, so that the rotating shaft 40 can easily pass through the second shaft hole 101 and the third shaft hole 102, and a certain gap is formed between the rotating shaft 40 and the second shaft hole 101 and between the rotating shaft 40 and the third shaft hole 102, which is beneficial for the rotating shaft 40 to freely rotate in the second shaft hole 101 and the third shaft hole 102, and greatly reduces the rotating friction force between the rotating shaft 49 and the second shaft hole 101 and the third shaft hole 102 during rotation.

In some embodiments, as shown in fig. 3-5, the shaft body 42 of the shaft 40 may have an axial length that is slightly longer than the length of the profile on either side of the second and third shaft holes 101, 102. Therefore, when the rotating shaft 40 connects the base 10 and the upper arm 21 through the nut 43 and the fastener 44, the rotating shaft 40 can still move in the axial direction to a small extent, and the rotating friction force between the rotating shaft 40 and the second shaft hole 101 and the third shaft hole 102 can also be reduced. It should be noted that the axial direction is the direction of the X axis in the drawings.

In some embodiments, as shown in fig. 3-5, the pivot 40 rotatably secures the upper arm 21 and the base 10 via a nut 43 and a fastener 44. Therefore, the rotating shaft 40 is easy to disassemble, the later maintenance is convenient, and the cost is reduced.

In some embodiments, as shown in fig. 3-5, the needle bearing 50 further includes a cage assembly 51, needles 52, and a bearing cup 53. The bearing outer race 53 is connected to the inner wall 2111 of the first shaft hole, and the needle roller 52 is connected to the rotary shaft 40.

In some embodiments, as shown in fig. 3 to 5, the plurality of needle rollers 52 are uniformly distributed inside the bearing outer ring 53, and are connected to the rotating shaft 40.

In some embodiments, as shown in fig. 3-5, cage assembly 51 is mounted inside bearing outer race 53 for rotatably securing a plurality of needle rollers 52, and cage assembly 51 may also rotate inside bearing outer race 53. The plurality of needle rollers 52 are uniformly distributed inside the bearing outer race 53 and are rotatable at the position of the cage assembly 51. When the rail vehicle runs, various joints, end elbows and the like on the line collide with the fluid extractor to different degrees in the running process of the rail vehicle along with the acceleration of the rail vehicle, and the needle roller bearing 50 also bears the impact force caused by the collision. At this time, the plurality of needle rollers 52 are stressed simultaneously and are multidirectional, so that the originally concentrated impact force can be decomposed into multidirectional small impact force, the impact force can be greatly relieved, and the effects of buffering and energy absorption are achieved.

In some embodiments, a large amount of lubricant may be stored in the needle bearing 50, thereby further reducing friction between the needle bearing 50 and other components, and allowing later maintenance and service cycles to last longer, saving and reducing associated costs.

In some embodiments, as shown in fig. 3 to 5, the buffered current collector 100 further includes a bushing 23, and the bushing 23 is disposed on both sides of the first shaft hole 211. The shaft sleeves 23 are disposed on both sides of the first shaft hole 211 to separate the upper arm 21 from the base 10 and the rotation shaft 40, thereby preventing the first shaft hole 211 of the upper arm 21 from rubbing against the base 10 and the rotation shaft 40.

In some embodiments, as shown in fig. 3-5, the bushing 23 is clearance fit with the second shaft bore 101 and the third shaft bore 102. A certain gap is formed between the bushing 23 and the second shaft hole 101 and the third shaft hole 102, so that friction is prevented from being generated between the bushing 23 and the second shaft hole 101 and the third shaft hole 102 during rotation. Therefore, the stress on the joint of the upper arm 21 and the base 10 is more easily damaged than that on other joints, and the shaft sleeve 23 is added to prevent the joint of the upper arm 21 and the base 10 from being damaged due to larger friction, so that the service life of the upper arm 21 is prolonged.

In some embodiments, as shown in fig. 3-5, the buffered current collector 100 further includes a buffer material 60, the buffer material 60 being disposed on the shaft 40 and/or the buffer material 60 being disposed between the needle bearing 50 and the first bore inner sidewall 2111. In some embodiments, the cushioning material 60 may be a rubber material.

In some embodiments, as shown in fig. 3, the shaft body 42 of the rotating shaft 40 is provided with a groove 421, and the buffer material 60 is disposed on the groove 421 of the shaft body 42. When the buffer material 60 is disposed on the groove 421, the outer diameter of the buffer material 60 is identical to the outer diameter of the rotation shaft 40, and the assembly and the normal use are not affected. Therefore, when the buffer type current collector 100 is impacted in the operation process of the railway vehicle, the impact force is absorbed through the buffer material 60, the impact force can be effectively reduced, and the impact force is further decomposed and weakened by combining the needle bearing 50, so that each joint of the whole buffer type current collector 100 has strong buffering and energy absorption effects, and the service life of the buffer type current collector 100 is prolonged.

In other embodiments, as shown in FIG. 4, a damping material 60 is disposed between the inner sidewall 2111 of the first bore and the outer race 53 of the needle bearing 50. In other embodiments, the cushioning material 60 may be combined with the outer race 53 to form a new outer race 53, and the new outer race 53 may be formed of the cushioning material 60. Because the new bearing outer ring 53 is too soft and easy to deform, a rigid retainer assembly 51 can be added between the new bearing outer ring 53 and the needle roller 52, so that the problem that the new bearing outer ring 53 is too soft and easy to deform under stress is solved. Therefore, when the buffer type current collector 100 is impacted in the operation process of the railway vehicle, the impact force is absorbed through the buffer material 60, the impact force can be effectively reduced, and the impact force is further decomposed and weakened by combining the needle bearing 50, so that each joint of the whole buffer type current collector 100 has strong buffering and energy absorption effects, and the service life of the buffer type current collector 100 is prolonged.

In still other embodiments, as shown in fig. 5, a groove 421 is provided on the shaft body 42 of the rotating shaft 40 for accommodating the first buffering material 61, and when the first buffering material 61 is provided on the groove 421, the outer diameter of the buffering material 60 is consistent with the outer diameter of the rotating shaft 40, which does not affect the assembly and normal use. Meanwhile, a second buffer material 62 is provided between the first axial bore inner wall 2111 and the bearing outer race 53 of the needle bearing 50. The first cushioning material 61 and the second cushioning material 62 are combined to produce better energy absorption and cushioning effects. Therefore, when the buffer type current collector 100 is impacted in the running process of the railway vehicle, the first buffer material 61 and the second buffer material 62 act simultaneously to buffer and absorb impact force, and the impact force can be effectively reduced. And the impact force is further decomposed and weakened by combining the needle bearing 50, so that each joint of the whole buffer type current collector 100 has stronger buffering and energy absorbing effects, and the service life of the buffer type current collector 100 is prolonged.

According to the utility model discloses rail vehicle, include: a vehicle body and a buffer type current collector 100. The current collector 100 is a buffer type current collector 100 according to the above embodiments of the present invention.

According to the utility model discloses rail vehicle, through being equipped with foretell buffering type current collector 100, can reduce the produced impact force of collision effectively, improve buffer capacity and energy-absorbing effect, each joint, structure response time when can also reducing the impact are favorable to protecting the current collector better, improve the life of current collector.

The buffered current collector 100 according to the present invention is described in detail below with reference to fig. 1 to 5.

As shown in fig. 1 to 2, the buffer type current collector 100 includes: base 10, insulating arm 20, mounting bracket 30, axle 40 and needle bearing 50. Wherein the base 10 is fixed to the vehicle body.

As shown in fig. 1-2, the insulation arm 20 further includes an upper arm 21 and a lower arm 22, the upper arm 21 and the lower arm 22 are provided with needle bearings 50, the upper arm 21 includes a first shaft hole 211, and the first shaft hole 211 is connected to the rotating shaft 40 through the needle bearings 50. The base 10 further includes a second shaft hole 101 and a third shaft hole 102, the second shaft hole 101 and the third shaft hole 102 are connected to the rotating shaft 40, and the inner diameters of the second shaft hole 101 and the third shaft hole 102 are the same.

As shown in fig. 1-2, there are two mounting brackets 30, a first mounting bracket 30a and a second mounting bracket 30 b. A first mounting bracket 30a and a second mounting bracket 30b are rotatably provided at the other end of the insulating arm 20. A first flow taking sliding plate 31a is arranged below the first mounting bracket 30a, and a second flow taking sliding plate 31b is arranged below the second mounting bracket 30 b. The first current-taking sliding plate 31a and the second current-taking sliding plate 31b can be electrically connected with a current-donating device for taking current so as to ensure the power supply of the rail vehicle in the running process.

As shown in fig. 1-2, the upper arm 21 and the lower arm 22 are each connected to a first mounting bracket 30a and a second mounting bracket 30 b. That is, the first and second mounting brackets 30a and 30b can rotate about the upper and lower arms 21 and 22. The upper arm 21 includes a first shaft hole 211, and the base 10 further includes a second shaft hole 101 and a third shaft hole 102. The rotating shaft 40 can be inserted through the first shaft hole 211, the second shaft hole 101 and the third shaft hole 102, and the upper arm 21 and the base 10 can be rotatably fixed by the nut 43 and the fastener 44. Thus, the rotation shaft 40 rotatably fixes the upper arm 21 and the base 10 by the nut 43 and the fastener 44. Therefore, the rotating shaft 40 is easy to disassemble, the later maintenance is convenient, and the cost is reduced.

As shown in fig. 3-5, the shaft 40 further includes a shoulder 41 and a shaft body 42. The length of the shoulder 41 is slightly greater than the inner diameter of the second shaft bore 101. The diameter of the shaft body 42 is slightly smaller than the inner diameter of the second shaft hole 101. Since the inner diameters of the second shaft hole 101 and the third shaft hole 102 are the same, that is, the length of the shoulder 41 is slightly larger than the inner diameter of the third shaft hole 102, and the diameter of the shaft body 42 is slightly smaller than the inner diameter of the third shaft hole 102. Therefore, friction between the rotating shaft 40 and the second shaft hole 101 and the third shaft hole 102 can be reduced, and the rotating shaft 40 and the base 10 can be protected.

As shown in fig. 3-5, the shaft body 42 of the rotating shaft 40 may have a length in the axial direction slightly longer than the length of the contour of the second shaft hole 101 and the third shaft hole 102 on both sides. Therefore, when the rotating shaft 40 connects the base 10 and the upper arm 21 through the nut 43 and the fastener 44, the rotating shaft 40 can still move in the axial direction to a small extent, and the rotating friction force between the rotating shaft 40 and the second shaft hole 101 and the third shaft hole 102 can also be reduced. It should be noted that the axial direction is the direction of the X axis in the drawings.

As shown in fig. 3-5, the needle bearing 50 further includes a cage assembly 51, needles 52, and a bearing cup 53. The cage assembly 51 is mounted inside the bearing outer race 53 for rotatably securing the plurality of needle rollers 52, and the cage assembly 51 is also rotatable inside the bearing outer race 53. The plurality of needle rollers 52 are uniformly distributed inside the bearing outer race 53 and are rotatable at the position of the cage assembly 51. A large amount of lubricating oil can be stored in the needle roller bearing 50.

As shown in fig. 3 to 5, the buffer type current collector 100 further includes a shaft sleeve 23, and the shaft sleeve 23 is disposed at two sides of the first shaft hole 211. The shaft sleeves 23 are disposed on both sides of the first shaft hole 211 to separate the upper arm 21 from the base 10 and the rotation shaft 40, thereby preventing the first shaft hole 211 of the upper arm 21 from rubbing against the base 10 and the rotation shaft 40. The bushing 23 is clearance-fitted to the second shaft hole 101 and the third shaft hole 102. A certain gap is formed between the bushing 23 and the second shaft hole 101 and the third shaft hole 102, so that friction is prevented from being generated between the bushing 23 and the second shaft hole 101 and the third shaft hole 102 during rotation.

In some embodiments, as shown in fig. 3, the shaft body 42 of the rotating shaft 40 is provided with a groove 421, and the buffer material 60 is disposed on the groove 421 of the shaft body 42. When the buffer material 60 is disposed on the groove 421, the outer diameter of the buffer material 60 is identical to the outer diameter of the rotation shaft 40, and the assembly and the normal use are not affected. The cushioning material 60 is a rubber material.

In other embodiments, as shown in FIG. 4, a damping material 60 is disposed between the inner sidewall 2111 of the first bore and the outer race 53 of the needle bearing 50. In other embodiments, the cushioning material 60 may be combined with the outer race 53 to form a new outer race 53, and the new outer race 53 may be formed of the cushioning material 60. Because the new bearing outer ring 53 is too soft and easy to deform, a rigid retainer assembly 51 can be added between the new bearing outer ring 53 and the needle roller 52, so that the problem that the new bearing outer ring 53 is too soft and easy to deform under stress is solved. The cushioning material 60 is a rubber material.

In still other embodiments, as shown in fig. 5, a groove 421 is provided on the shaft body 42 of the rotating shaft 40 for accommodating the first buffering material 61, and when the first buffering material 61 is provided on the groove 421, the outer diameter of the buffering material 60 is consistent with the outer diameter of the rotating shaft 40, which does not affect the assembly and normal use. Meanwhile, a second buffer material 62 is provided between the first axial bore inner wall 2111 and the bearing outer race 53 of the needle bearing 50. The first cushioning material 61 and the second cushioning material 62 are combined to produce better energy absorption and cushioning effects. Wherein the first cushioning material 61 and the second cushioning material 62 are rubber materials.

Other configurations and operations of a buffer-type current collector 100 and a rail vehicle having the same according to an embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above 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.

While 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 to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A buffered current collector, comprising:

a base;

one end of the insulating arm is rotatably arranged on the base,

the mounting bracket is rotatably arranged at the other end of the insulating arm, and a flow taking sliding plate is arranged below the mounting bracket;

the rotating shaft is used for connecting the insulating arm and the base, and is also used for connecting the insulating arm and the mounting bracket;

and the needle bearing is arranged in the insulating arm and is connected with the rotating shaft.

2. The buffer type current collector as claimed in claim 1, wherein the insulation arm further comprises an upper arm and a lower arm, the upper arm and the lower arm are both provided with the needle bearing, the upper arm comprises a first shaft hole, and the first shaft hole is connected with the rotating shaft through the needle bearing; the base further comprises a second shaft hole and a third shaft hole, the second shaft hole and the third shaft hole are connected with the rotating shaft, and the inner diameter of the second shaft hole is the same as that of the third shaft hole.

3. The buffered current collector as recited in claim 2, wherein the rotation shaft comprises:

a shoulder having a length slightly greater than an inner diameter of the second shaft bore;

the diameter of the shaft body is slightly smaller than the inner diameter of the second shaft hole.

4. The buffered current collector of claim 2, wherein the needle bearing further comprises a cage assembly, a needle roller, and a bearing outer race, the bearing outer race interfacing with the inner sidewall of the first bore, the needle roller interfacing with the shaft.

5. The flow collector of claim 4, wherein the number of the needle rollers is multiple, and the multiple needle rollers are uniformly distributed inside the outer ring of the bearing and are all connected to the rotating shaft.

6. The flow buffer collector as claimed in claim 2, further comprising bushings disposed at two sides of the first shaft hole.

7. The buffered current collector of claim 6, wherein the bushing is clearance fit with the second shaft bore and the third shaft bore.

8. The buffered current collector of claim 2, further comprising a buffer material disposed on the shaft and/or between the needle bearing and the inner sidewall of the first shaft bore.

9. The buffered current collector of claim 8, wherein the buffer material is a rubber material.

10. A rail vehicle, comprising:

a vehicle body;

the buffer type current collector is the buffer type current collector according to any one of claims 1 to 9, and the base is arranged on the vehicle body.

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