阅读说明：本技术 一种闸瓦托、制动梁和转向架 (Brake head, brake beam and bogie ) 是由 李立东 张钊 邵文东 徐世锋 周国东 曹玉峰 姚海 高宗凯 耿忠华 王厂 于 2021-07-29 设计创作，主要内容包括：本发明提供一种闸瓦托、制动梁和转向架,所述闸瓦托外侧设置有辊轴,辊子套设所述辊轴,并能够相对所述辊轴旋转,所述辊轴外侧设置有能够限制所述辊子向外侧脱离的端板,且所述端板沿径向方向不突出于所述辊子的外沿。采用如上结构,辊轴和辊子能够插装于转向架侧架滑槽,辊子能够绕辊轴转动,以使闸瓦托对制动装置进行缓解时,将滑动摩擦改为滚动摩擦,降低闸瓦托与转向架之间的摩擦阻力；端板固定于辊轴的外侧,并能够将辊子限位于端板与闸瓦托之间,能够防止辊子在运动过程中横向窜动或在运输中脱离辊轴。(The invention provides a brake shoe holder, a brake beam and a bogie, wherein a roll shaft is arranged on the outer side of the brake shoe holder, a roller is sleeved on the roll shaft and can rotate relative to the roll shaft, an end plate capable of limiting the roller to be separated from the outer side is arranged on the outer side of the roll shaft, and the end plate does not protrude out of the outer edge of the roller along the radial direction. By adopting the structure, the roll shaft and the roller can be inserted into the side frame sliding groove of the bogie, and the roller can rotate around the roll shaft, so that when the brake shoe holder relieves the brake device, sliding friction is changed into rolling friction, and the friction resistance between the brake shoe holder and the bogie is reduced; the end plate is fixed in the outside of roller to can be with the roller spacing between end plate and brake head, can prevent that the roller from transversely drunkenness or breaking away from the roller in the transportation in the motion process.)

1. A brake head, comprising: the brake shoe support is characterized in that a roll shaft (21) is arranged on the outer side of the brake shoe support (2), a roller (22) is sleeved on the roll shaft (21) and can rotate relative to the roll shaft (21), an end plate (23) capable of limiting the roller (22) to be separated from the outer side is arranged on the outer side of the roll shaft (21), and the end plate (23) does not protrude out of the outer edge of the roller (22) along the radial direction.

2. The brake head of claim 1, wherein: the outside of roller (21) is provided with mounting hole (211), end plate (23) be provided with the corresponding fixed orifices (231) of mounting hole (211), end plate (23) can be fixed in through the fastener roller (21).

3. The brake head of claim 1, wherein: the roller (22) is of a cylindrical structure with a through hole (221), the through hole (221) is matched with the roller shaft (21), and the roller (22) is sleeved on the roller shaft (21) through the through hole (221).

4. The brake head of claim 1, wherein: the roller (22) is a linear bearing with a through hole (221), and the linear bearing can be fixed on the roller shaft (21) through interference fit.

5. The brake head of claim 1, wherein: the root of roller (21) is provided with reinforced structure (212), just roller (21) with brake head (2) integrated into one piece.

6. The brake head according to any one of claims 1 to 5, characterized in that: the brake head further comprises a sliding block part, the sliding block part and the roller shaft (21) are arranged in front of and behind the outer side of the brake head (2) side by side, and the roller shaft (21) is close to one side of the cambered surface of the brake head (2); the top of the roller (22) is not lower than the top of the shoe portion and the bottom of the roller (22) is not lower than the bottom of the shoe portion.

7. The brake head of claim 6, wherein: the sliding block part comprises a sliding block (24) and a sliding block sleeve (25), the sliding block (24) is sleeved with the sliding block sleeve (25), two corresponding side walls of the sliding block sleeve (25) are provided with corresponding positioning holes (251), the sliding block (24) is provided with holes (241) matched with the two positioning holes (251), and the sliding block sleeve (25) can be fastened with the sliding block (24) through fasteners inserted into the positioning holes (251) and the holes (241).

8. The brake head according to any one of claims 1 to 5, characterized in that: the outside of brake head (2) is provided with two side by side roller (21), two roller (21) all are provided with corresponding roller (22) and end plate (23).

9. Brake beam, including frame (1), pillar (3) and clip (4), frame (1) is isosceles triangle structure, pillar (3) with clip (4) fixed connection to support in between the apex angle of frame (1) and the base, its characterized in that: brake heads (2) are arranged at both ends of the frame (1), and the brake heads (2) are the brake heads (2) according to any one of claims 1 to 8.

10. Bogie, its characterized in that: comprising a brake beam according to claim 9.

Technical Field

The invention relates to the technical field of railway vehicles, in particular to a brake head, a brake beam and a bogie.

Background

The brake beam is an important part of a railway vehicle brake device, and mainly plays a role in transmitting braking force to wheels through the brake beam to stop the vehicle from moving forward when the vehicle is braked.

The brake beam generally comprises a frame and brake head supports arranged at two ends of the frame, and a slide block is arranged at the outer side of each brake head support and can be inserted into a sliding groove of a side frame of the bogie, so that the brake head supports are connected with the sliding groove in a sliding manner. When the brake beam relieves the brake system, the sliding friction between the sliding block and the sliding groove is large, so that the relieving brake performance of the brake beam is poor.

In order to reduce the sliding friction between the brake beam and the bogie in the prior art, a sliding block arranged on the outer side of the brake head is replaced by a roller shaft assembly, so that the sliding friction between the brake head and the sliding groove is changed into rolling friction when the brake beam relieves the brake device, and the friction resistance between the brake beam and the bogie is reduced. However, the roller in the roller shaft assembly is not transversely constrained, so that the roller has the problems of transverse movement and roller loss in transportation in practical application.

Therefore, how to provide a brake beam capable of preventing a roller from moving transversely and being separated from a roller shaft assembly in transportation is a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide a brake beam capable of preventing a roller from moving transversely and being separated from a roller shaft assembly in transportation.

In order to solve the technical problem, the invention provides a brake shoe holder, wherein a roller shaft is arranged on the outer side of the brake shoe holder, a roller is sleeved on the roller shaft and can rotate relative to the roller shaft, an end plate capable of limiting the roller to be separated from the outer side is arranged on the outer side of the roller shaft, and the end plate does not protrude out of the outer edge of the roller along the radial direction.

By adopting the structure, the roll shaft and the roller can be inserted into the side frame sliding groove of the bogie, and the roller can rotate around the roll shaft, so that when the brake shoe holder relieves the brake device, sliding friction is changed into rolling friction, and the friction resistance between the brake shoe holder and the bogie is reduced; the end plate is fixed in the outside of roller to can be with the roller spacing between end plate and brake head, can prevent that the roller from transversely drunkenness or breaking away from the roller in the transportation in the motion process.

Optionally, the outside of roller is provided with the mounting hole, the end plate is provided with the fixed orifices that corresponds with the mounting hole, the end plate can be fixed in through the fastener the roller.

Optionally, the roller is of a cylindrical structure with a through hole, the through hole is matched with the roller shaft, and the roller is sleeved on the roller shaft through the through hole.

Optionally, the roller is a linear bearing with a through hole, and the linear bearing can be fixed on the roller shaft through interference fit.

Optionally, the root of the roll shaft is provided with a reinforcing structure, and the roll shaft and the brake head are integrally formed.

Optionally, the brake shoe further comprises a sliding block, the sliding block and the roller shaft are arranged in front of and behind the outer side of the brake shoe holder side by side, and the roller shaft is close to one side of the arc surface of the brake shoe holder; the top of the roller is not lower than the top of the slider portion and the bottom of the roller is not lower than the bottom of the slider portion.

Optionally, the slider portion includes a slider and a slider sleeve, the slider sleeve is sleeved on the slider, two corresponding side walls of the slider sleeve are provided with corresponding positioning holes, the slider is provided with holes matched with the two positioning holes, and the slider sleeve can be fastened to the slider by inserting into the positioning holes and fasteners of the holes.

Optionally, the brake head is provided with two roller shafts side by side on the outer side, and the two roller shafts are provided with the corresponding roller and the end plate.

The invention also provides a brake beam which comprises a frame, a support column and a clamp fastener, wherein the frame is in an isosceles triangle structure, the support column is fixedly connected with the clamp fastener and is supported between the top angle and the bottom edge of the frame, the two ends of the frame are respectively provided with a brake head holder, and the brake head holders are the brake head holders described above.

The invention also provides a bogie comprising a brake beam as described above.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of a brake head according to an embodiment of the present invention;

FIG. 2 is a schematic view of the roller and slider structure of FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic structural view of a roller shaft in a second embodiment of the brake head according to an embodiment of the present invention;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a schematic structural view of a first embodiment of the roller of FIG. 1;

FIG. 7 is a schematic structural view of a second embodiment of the roller of FIG. 1;

FIG. 8 is a schematic structural view of the end plate of FIG. 1;

FIG. 9 is a schematic view of the structure of the slider sleeve of FIG. 1;

FIG. 10 is a schematic view of the brake head of FIG. 1 in contact with the chute under load;

FIG. 11 is a schematic structural view of a brake beam provided by an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a bogie according to an embodiment of the present invention.

The reference numerals in fig. 1-12 are illustrated as follows:

1 frame, 2 brake head, 21 roller shaft, 211 mounting hole, 212 reinforcing structure, 22 roller, 221 through hole, 23 end plate, 231 fixing hole, 24 slider, 241 hole, 25 slider sleeve, 251 positioning hole, 3 support and 4 clip.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-10, fig. 1 is a schematic structural diagram of a first embodiment of a brake head according to an embodiment of the present invention; FIG. 2 is a schematic view of the roller and slider structure of FIG. 1; FIG. 3 is a top view of FIG. 2; FIG. 4 is a schematic structural view of a roller shaft in a second embodiment of the brake head according to an embodiment of the present invention; FIG. 5 is a top view of FIG. 4; FIG. 6 is a schematic structural view of a first embodiment of the roller of FIG. 1; FIG. 7 is a schematic structural view of a second embodiment of the roller of FIG. 1; FIG. 8 is a schematic structural view of the end plate of FIG. 1; FIG. 9 is a schematic view of the structure of the slider sleeve of FIG. 1; FIG. 10 is a schematic view of the brake head of FIG. 1 being forced into contact with the chute.

The invention provides a brake head.A roll shaft 21 is arranged on the outer side of a brake head 2, a roller 22 is sleeved on the roll shaft 21 and can rotate relative to the roll shaft 21, an end plate 23 capable of limiting the outward separation of the roller 22 is arranged on the outer side of the roll shaft 21, and the end plate 23 does not protrude out of the outer edge of the roller 22 along the radial direction.

By adopting the structure, the roller 22 which is arranged at the outer side of the brake shoe holder 2 and sleeved on the roller shaft 21 can be clamped in the chute of the side frame of the bogie, when the brake shoe holder 2 is in contact with a wheel for braking or the braking is relieved, the roller 22 can rotate relative to the roller shaft 21 to roll in the chute, the sliding friction between the brake shoe holder 2 and the chute is changed into rolling friction, and the friction resistance between the brake shoe holder 2 and the bogie is reduced; the end plate 23 is fixed on the outer side of the roll shaft 21, and can limit the roller 22 between the end plate 23 and the brake head 2, and can prevent the roller 22 from moving transversely in the moving process or separating from the roll shaft in the transportation process.

Wherein, the outside of brake head 2 means the one side of keeping away from frame 1, the equal fixedly connected with brake head 2 in frame 1 both sides, the left side of left side brake head 2, be the outside of left side brake head 2 promptly, the right side of right side brake head 2, be the outside of right side brake head 2 promptly, the outside of roller 21 is the same with the outside of brake head 2, radial direction means the radial direction of roller 22 or roller 21, the outer edge of roller 22 indicates promptly along the ascending outward flange in roller 22 radial direction.

Referring to fig. 1, in the embodiment, the end plate 23 at least partially protrudes from the outer edge of the roller shaft 21 in the radial direction of the roller shaft 21 or the roller 22, and the protruding portion can limit the roller 22, so that the roller 22 cannot be pulled out from the outer side of the roller shaft 21. The end plate 23 does not protrude beyond the outer edge of the roller 22 in the radial direction of the roller 22 to prevent the end plate 23 from interfering with the rolling of the roller 22 or to increase the rolling friction between the brake head 2 and the runner.

Referring to fig. 2, in the present embodiment, the outer side of the roller shaft 21 is provided with a mounting hole 211, the end plate 23 is provided with a fixing hole 231 corresponding to the mounting hole 211, and the end plate 23 can be fixed to the roller shaft 21 by a fastener.

As shown in fig. 8, in the present embodiment, the end plate 23 is a disc-shaped structure, the center of the end plate is provided with a fixing hole 231 corresponding to the mounting hole 211, the fastening member may be a screw, a rivet, or the like, and the end plate 23 may pass through the fixing hole 231 and the mounting hole 211 through the screw, the rivet, or the like to be fixed to the roller shaft 21.

It is understood that the end plate 23 may be fixed to the roller shaft 21 by other methods than the above, the present invention is not limited thereto, as long as the end plate 23 can be fixed to the outer side of the roller shaft 21 and limit the roller 22, for example, the end plate 23 may be fixed to the roller shaft 21 by welding, snapping, and the like.

The end plate 23 may have a structure other than a disc-shaped structure, but the present invention is not limited thereto as long as at least a part thereof can protrude from the outer edge of the roller shaft 21 and does not protrude from the outer edge of the roller 22, and for example, the end plate 23 may have a polygonal disc-shaped structure or a rod-shaped structure.

In this embodiment, the roller shaft 21 is a cylindrical structure and is fixedly connected to the outer side of the brake head 2, the roller 22 may be a cylindrical structure having a through hole 221, as shown in fig. 6, the through hole 221 is matched with the roller shaft 21, so that the roller 22 can be sleeved on the roller shaft 21 through the through hole 221 and rotate relative to the roller shaft 21; the roller 22 may also be a linear bearing having a through hole 221, as shown in fig. 7, the through hole 221 also matching the roller shaft 21, the linear bearing may be mounted to the roller shaft 21 by interference fit, the linear bearing itself being rotatable to rotate relative to the roller shaft 21.

It should be understood that the roller shaft 21 and the roller 22 may be other structures besides the above structures, and the two may also be connected in other manners, which are not limited in the present invention as long as the two can cooperate to change the sliding friction between the brake head 2 and the sliding groove into rolling friction.

In addition, because the roller 22 needs to roll and rub with the chute, it needs to select the material that intensity is higher, wearability is good and coefficient of friction is low for use to guarantee that the roller 22 has longer life, if the roller 22 adopts linear bearing, the outer layer material of linear bearing also needs to have above characteristics, prevents that the roller 22 from damaging and causing the incident in the use.

In this embodiment, the root of the roller shaft 21 is provided with a reinforcing structure 212, and the roller shaft 21 and the brake head 2 are integrally formed.

As shown in fig. 2-4, when the brake head 2 is in contact with the wheel for braking, the position where the lower surface of the roller 22 is in contact with the sliding groove may bear the main pressure caused by braking, so that there is a large stress between the brake head 2 and the roller shaft 21, and a crack may occur at the root of the roller shaft 21, even a direct fracture occurs at the connection between the roller shaft 21 and the brake head 2, but in this embodiment, the root of the roller shaft 21 is provided with the reinforcing structure 212, and the roller shaft 21 and the brake head 2 are integrally formed, so that the strength between the roller shaft 21 and the brake head 2 is strong, the stability is high, and the roller shaft 21 can be effectively prevented from being damaged due to the excessive pressure.

As shown in fig. 2, the reinforcing structure 212 may be disposed only on the radial outer side of the roller shaft 21 and bear the direction of the pressure force, so as to enhance the strength of the roller shaft 21 in the corresponding direction, and as shown in fig. 2, the roller shaft 21 in fig. 2 can bear the pressure force from the sliding groove acting on the upper surface, so that the reinforcing structure 212 may be disposed on the upper side of the root of the roller shaft 21; a reinforcing structure 212 may be further disposed at the radial outer side of the roll shaft 21 to enhance the overall strength of the connection between the roll shaft 21 and the brake head 2, which is not limited by the present invention.

Still include slider portion in this embodiment, slider portion and roller 21 set up side by side around the outside of brake head 2, and roller 21 is close to brake head 2's cambered surface one side, and this cambered surface one side indicates that brake head 2 keeps away from one side of wheel. The front-rear direction refers to the moving direction of the brake head 2 during the traverse, i.e., the direction indicated by the arrow in fig. 11, and the length direction and the moving direction of the entire rail vehicle, so that the roller shaft 21 and the slider portion can be simultaneously inserted into the sliding groove of the bogie.

In a first embodiment of the brake head 2, as shown in fig. 1, the slider part and the roller shaft 21, and the corresponding roller 22, the end plate 23, and the like are arranged side by side in front and rear outside the brake head 2, and the roller shaft 21 is close to the arc surface side of the brake head 2; the top of the roller 22 is not lower than the top of the slide portion and the bottom of the roller 22 is not lower than the bottom of the slide portion. The arrangement mode enables the brake head 2 to be in rolling friction with the side wall above the sliding groove only, the side wall below the sliding groove is still in sliding friction, when the brake head 2 is in contact braking with a wheel, as shown in fig. 10, the direction shown by the arrow in fig. 10 is the stress direction of the sliding block 24 and the roller shaft 21, the sliding block 24 capable of bearing higher pressure is used for bearing the main braking pressure, and the stability and the safety of the brake head 2 are further improved.

In a second embodiment of the brake head 2, as shown in fig. 4, two roller shafts 21 and corresponding rollers 22 and end plates 23 are arranged in parallel in front and rear outside the brake head 2, and in this embodiment, the brake head 2 and the upper and lower side walls of the chute are both in rolling friction, and the frictional resistance between the brake head 2 and the bogie is small.

In this embodiment, the slider portion includes a slider 24 and a slider sleeve 25, the slider 24 is sleeved on the slider sleeve 25, two opposite side walls of the slider sleeve 25 are provided with corresponding positioning holes 251, the slider 24 is provided with holes 241 matching with the two positioning holes 251, and the slider sleeve 25 can be fastened to the slider 24 by fasteners inserted into the positioning holes 251 and the holes 241.

In a first embodiment of the brake head 2, the slipper 24 and the roller shaft 21 are both integrally formed with the brake head 2 to increase the strength of the two so that they can withstand greater pressures without cracking or breaking, etc.

When the brake head 2 is in contact with a wheel for braking or the braking is relieved, the sliding block sleeve 25 can replace the sliding block 24 to be abutted against the sliding groove and have sliding friction, and the abrasion of the sliding block 24 is reduced. The fastening member may be a screw, a rivet, etc., and the slider sleeve 25 is fixed to the slider 24 by the screw or the rivet, but of course, the slider sleeve 25 may also be fixed to the slider 24 by other methods besides the above, which is not limited in the present invention.

The structure of the slider cover 25 is shown in fig. 9, and it may be a cylindrical structure to cover the circumferential outer side of the slider 24, or may be a barrel-shaped structure to cover the circumferential outer side and the outer side surface of the slider 24, and the structure of the slider cover 25 is not limited in the present invention as long as it can cover the slider 24 and replace the sliding friction between the slider 24 and the sliding groove. The slider sleeve 25 is made of the same material as the roller 22, and also needs a material having high strength, good wear resistance and low friction coefficient to increase the service life and reduce the frictional resistance between the brake head 2 and the bogie.

In addition, since there is a certain inclination between the truck side frame sliding groove and the brake head 2, that is, an angle in the direction indicated by the arrow in fig. 3 and 5, in order to ensure that the roller 22 sleeved with the roller shaft 21 and the slider sleeve 25 sleeved with the slider 24 can linearly roll and slide in the sliding groove, the roller shaft 21 and the slider 24 should also be provided with a certain inclination so that the roller 22 and the slider sleeve 25 can linearly roll and slide in the sliding groove, and the specific setting of the inclination is determined according to the inclination between the truck side frame sliding groove and the brake head 2 in practical application.

Referring to FIG. 11, FIG. 11 is a schematic view of a brake beam according to an embodiment of the present invention.

The invention also provides a brake beam, which comprises a frame 1, a support column 3 and a clamp buckle 4, wherein the frame 1 is in an isosceles triangle structure, the support column 3 and the clamp buckle 4 are fixedly connected and are manufactured between the top corner and the bottom edge of the frame 1, two ends of the frame 1 are respectively provided with a brake head 2, the brake head 2 is the brake head 2 described above, and as the brake head 2 has the technical effects, the brake beam comprising the brake head 2 also has the same technical effects, and thus the description is omitted.

Referring to fig. 12, fig. 12 is a schematic structural diagram of a bogie according to an embodiment of the present invention.

The present invention also provides a bogie comprising a brake beam, which is the brake beam described above, and since the brake beam has the technical effects as above, the bogie comprising the brake beam should also have the same technical effects, and therefore, the description thereof is omitted here.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.