CN113371027A

CN113371027A - Brake head, brake beam and bogie

Info

Publication number: CN113371027A
Application number: CN202110864931.6A
Authority: CN
Inventors: 邵文东; 姜浩; 徐世锋; 张钊; 周国东; 曹玉峰; 姚海; 耿忠华; 王厂; 高宗凯
Original assignee: CRRC Qiqihar Rolling Stock Co Ltd
Current assignee: CRRC Qiqihar Rolling Stock Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-09-10

Abstract

The invention provides a brake head, a brake beam and a bogie, wherein a slide block part is arranged on the outer side of the brake head, a clamping groove is arranged on the outer side of the slide block part, a pulley is arranged in the clamping groove, and at least part of the pulley is arranged in the clamping groove in an outward protruding mode. By adopting the structure, the sliding block part can be inserted into the side frame sliding groove of the bogie, and the outer side of the sliding block part is contacted with the bottom of the sliding groove through the pulley, so that in the process of braking and relieving the braking of the brake head, if the brake head moves transversely, the sliding friction between the sliding block part and the sliding groove can be changed into rolling friction by the pulley, the friction resistance between the brake head and the bogie is reduced, the movement of the brake head at two ends of the brake beam is kept consistent, and the problem of clamping stagnation of the brake beam is prevented.

Description

Brake head, brake beam and bogie

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. In the process of braking and relieving braking of the brake shoe holder, the brake beam usually moves transversely, the end part of the sliding block and the bottom of the sliding groove slide and rub to generate friction resistance, so that the brake shoe holders at two ends of the brake beam are not consistent in movement, the brake beam is blocked, the braking and relieving braking functions are invalid, and safety accidents are caused.

Therefore, how to provide a brake beam without the problem of clamping stagnation is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The object of the present invention is to provide a brake beam which does not suffer from the problem of jamming.

In order to solve the technical problem, the invention provides a brake head, wherein a sliding block part is arranged on the outer side of the brake head, a clamping groove is arranged on the outer side of the sliding block part, a pulley is arranged in the clamping groove, and at least part of the pulley protrudes outwards and is arranged in the clamping groove.

By adopting the structure, the sliding block part can be inserted into the side frame sliding groove of the bogie, and the outer side of the sliding block part is contacted with the bottom of the sliding groove through the pulley, so that in the process of braking and relieving the braking of the brake head, if the brake head moves transversely, the sliding friction between the sliding block part and the sliding groove can be changed into rolling friction by the pulley, the friction resistance between the brake head and the bogie is reduced, the movement of the brake head at two ends of the brake beam is kept consistent, and the problem of clamping stagnation of the brake beam is prevented.

Optionally, the slider portion includes slider and slider cover, the draw-in groove set up in the outside of slider, slider cover is established the slider, and outside fretwork sets up to spill at least part the pulley.

Optionally, the upper and lower peripheral walls of the slider sleeve are provided with corresponding positioning holes, the slider is provided with mounting holes corresponding to the positioning holes, and a fastener can pass through the positioning holes and the mounting holes to fix the slider sleeve to the slider.

Optionally, the axle center of the pulley is provided with a through hole, and the fastener can pass through the through hole, so that the pulley rotates around the fastener.

Optionally, the slider and the brake head are integrally formed.

Optionally, still including set up in the rotation axis of draw-in groove, the axle center of pulley is provided with the through-hole, the pulley can pass through the through-hole cover is established the rotation axis, the duplex winding the rotation axis is rotatory.

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, said brake beam being as described above; the brake shoe support is in contact with the bottom of the sliding groove through a pulley when the brake beam is in contact with a wheel for braking or the braking is relieved.

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 an exploded view of FIG. 1;

FIG. 3 is a schematic view of the slider structure of FIG. 1;

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

FIG. 5 is a schematic view of the structure of the slider sleeve of FIG. 1;

FIG. 6 is a schematic view of the pulley of FIG. 1;

FIG. 7 is a schematic view of the pulley of FIG. 4;

FIG. 8 is a side view of FIG. 1;

FIG. 9 is a force diagram of the brake head of FIG. 1;

FIG. 10 is a schematic structural view of a brake beam provided by an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a bogie according to an embodiment of the present invention.

The reference numerals in fig. 1-11 are illustrated as follows:

1 frame, 2 brake head, 21 slide block part, 211 clamping groove, 22 pulleys, 221 through hole, 23 slide block, 231 mounting hole, 24 slide block sleeve, 241 positioning hole, 25 fastener, 26 rotating shaft, 3 support post and 4 clamping buckle.

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. 1-9, 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 an exploded view of FIG. 1; FIG. 3 is a schematic view of the slider structure of FIG. 1; FIG. 4 is a schematic structural view of a second embodiment of a brake head according to an embodiment of the present invention; FIG. 5 is a schematic view of the structure of the slider sleeve of FIG. 1; FIG. 6 is a schematic view of the pulley of FIG. 1; FIG. 7 is a schematic view of the pulley of FIG. 4; FIG. 8 is a side view of FIG. 1; FIG. 9 is a force diagram of the brake head of FIG. 1.

The embodiment of the invention provides a brake head, wherein a sliding block part 21 is arranged on the outer side of a brake head 2, a clamping groove 211 is arranged on the outer side of the sliding block part 21, a pulley 22 is arranged in the clamping groove 211, and at least part of the pulley 22 is arranged in the clamping groove 211 in a protruding manner, wherein the outer side refers to the side, away from a frame 1, of the brake head 2.

Adopt as above structure, slider portion 21 can cartridge in bogie side frame spout, and the bottom of pulley 22 contact spout is passed through in the slider portion 21 outside, at the braking of brake head 2 and the in-process of alleviating the braking, if brake head 2 takes place the sideslip, pulley 22 can become rolling friction with the sliding friction between slider portion 21 and the spout, reduces the frictional resistance between brake head 2 and the bogie, makes the removal of the brake head 2 at brake beam both ends keep unanimous, prevents that the brake beam from taking place the jamming problem.

Here, the lateral moving direction of the brake head 2 is as shown in fig. 1, fig. 2 and fig. 8, and the direction shown by the arrow in the figure is the lateral moving direction of the brake head 2, which is also the installation direction of the sliding groove, and the length direction and the moving direction of the whole vehicle, when the slider portion 21 is inserted into the sliding groove, if the brake head 2 is laterally moved, the slider portion 21 can slide in the sliding groove along with the brake head 2, and the pulley 22 contacts the bottom of the sliding groove, so that the rolling friction is generated between the slider portion 21 and the sliding groove.

Referring to fig. 1, the pulley 22 is horizontally disposed inside the locking groove 211 and can rotate inside the locking groove 211, and the pulley 22 at least partially protrudes from the locking groove 211, that is, at least the outermost portion of the pulley 22 protrudes from the locking groove 211, so that when the slider portion 21 is inserted into the sliding groove, the outermost portion of the pulley 22 can first contact with the bottom of the sliding groove, and when the brake head 2 moves laterally, the pulley 22 can change the sliding friction between the slider portion 21 and the sliding groove into rolling friction.

In this embodiment, the sliding block portion 21 includes a sliding block 23 and a sliding block sleeve 24, the locking slot 211 is disposed on an outer side of the sliding block 23, the sliding block 23 is sleeved with the sliding block sleeve 24, and the outer side is hollowed out to expose at least a portion of the pulley 22.

Specifically, as shown in fig. 1 and 2, the slider sleeve 24 covers the circumferential outer surface of the slider 23, and when the slider portion 21 is inserted into the sliding groove, the slider sleeve 24 can replace the slider 23 to contact with the side wall of the sliding groove, so that when the brake head 2 moves laterally, the slider 23 can replace the friction between the slider 23 and the side wall of the sliding groove, and the slider 23 is protected from being worn.

As shown in fig. 5, the outer side of the sliding block sleeve 24 needs to be hollowed out, so that the pulley 22 can leak out and contact with the bottom of the sliding chute, and the pulley 22 is not interfered, thereby preventing the pulley 22 from being incapable of rotating due to the friction between the pulley 22 and the outer edge of the sliding block sleeve 24.

The sliding block sleeve 24 should be made of a material with high strength, good wear resistance and low friction coefficient to prolong the service life of the sliding block sleeve and reduce the sliding friction between the brake head 2 and the bogie, and the material of the sliding block sleeve 24 is not limited in the invention as long as the sliding block 23 can be protected to prevent the sliding block 23 from being worn.

In this embodiment, the upper and lower peripheral walls of the slider sleeve 24 are provided with corresponding positioning holes 241, the slider 23 is provided with a mounting hole 231 opposite to the positioning holes 241, and the fastener 25 can pass through the positioning holes 241 and the mounting hole 231 to fix the slider sleeve 24 to the slider 23. The connecting mode is low in cost, and in the follow-up maintenance process, the sliding block sleeve 24 can be conveniently disassembled and assembled on the sliding block 23, so that the sliding block sleeve 24 can be conveniently replaced.

Specifically, in this embodiment, the fastening member 25 is a rivet, and the rivet can pass through the two positioning holes 241 of the slider sleeve 24 and the mounting hole 231 of the slider 23, so that the slider sleeve 24 is fixed to the slider 23 in a sleeving manner, and the slider sleeve 24 is limited. Of course, the fastening member 25 may also be other structures besides a rivet, and the present invention is not limited to this, as long as it can fixedly connect the slider sleeve 24 and the slider 23 through the positioning hole 241 and the mounting hole 231, for example, the fastening member 25 may also be a screw, and the inner walls of the positioning hole 241 and the mounting hole 231 may be provided with corresponding threads, and the screw passes through the positioning hole 241 and the mounting hole 231 to fix the slider sleeve 24 and the slider 23.

It should be understood that the manner of fixing the slider sleeve 24 and the slider 23 may be other than the above, and the present invention is not limited thereto as long as the slider sleeve 24 can sleeve the slider 23 to cover the circumferential outer surface of the slider 23.

In this embodiment, the axis of the pulley 22 is provided with a through hole 221, and if the axis position is the same as the position of the fastening member 25, as shown in fig. 1, the pulley 22 can be sleeved with the fastening member 25, and the fastening member 25 is used as a rotating shaft to rotate around the fastening member 25; if the axial position is different from the position of the fastening member 25, as shown in fig. 4, the rotation shaft 26 needs to be additionally disposed in the engaging groove 211, and the pulley 22 can be sleeved on the rotation shaft 26 and rotate around the rotation shaft 26 with the rotation shaft 26 as a rotation shaft. Of course, no matter which of the fastening member 26 and the rotation shaft 26 is used as the rotation shaft of the pulley 22, it is ensured that the outermost side of the pulley 22 can protrude from the engaging groove 211.

The overall structure of the pulley 22 may be a cylindrical structure as shown in fig. 6, a spherical structure as shown in fig. 7, or other structures besides the above two structures, which is not limited in the present invention, and the specific structure thereof may be freely selected according to actual circumstances as long as it can convert the sliding friction between the slider portion 2 and the chute bottom into rolling friction.

In addition, according to the structure and size of the slider 23, the slot 211 and the pulley 22, a plurality of pulleys 22 can be arranged in the slot 211, and a plurality of rotating shafts are correspondingly arranged to share the pressure borne by each rotating shaft, so that the rotating shafts are prevented from being damaged due to the fact that the rotating shafts bear excessive pressure in the transverse moving process of the brake head 2.

In this embodiment, the slider 23 and the brake head 2 are integrally formed. When the brake head 2 brakes the wheel by contact, a part of the pressure is shared between the slider portion 21 and the sliding groove, so that the slider 23 bears the main pressure, and if the connection strength between the slider 23 and the brake head 2 is insufficient, the joint between the slider 23 and the brake head 2 is cracked or even directly broken.

Referring to FIG. 10, FIG. 10 is a schematic structural 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. 11, fig. 11 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.

Referring to fig. 8, during the braking and the brake release of the brake head 2, the brake head 2 moves in the direction of the arrow in fig. 8, since the sliding block 21 is inserted into the sliding groove, the outer end of the sliding block rubs against the sliding groove, so that the frictional resistance is generated between the brake head 2 and the bogie, as shown in fig. 9, the direction of the arrow in fig. 9 is the force receiving direction of the outer end of the sliding block 21, at this time, the pulley 22 can change the sliding friction between the sliding block 21 and the sliding groove into rolling friction, so as to reduce the frictional resistance between the brake head 2 and the bogie, and the braking and the brake release performance of the brake beam is better.

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.

Claims

1. A brake head, comprising: the brake head is characterized in that a sliding block part (21) is arranged on the outer side of the brake head holder (2), a clamping groove (211) is arranged on the outer side of the sliding block part (21), a pulley (22) is arranged in the clamping groove (211), and at least part of the pulley (22) is arranged in the clamping groove (211) in an outwards protruding mode.

2. The brake head of claim 1, wherein: slider portion (21) include slider (23) and slider cover (24), draw-in groove (211) set up in the outside of slider (23), slider cover (24) cover is established slider (23), and outside fretwork sets up to spill at least part pulley (22).

3. The brake head of claim 2, wherein: the upper and lower peripheral walls of the slider sleeve (24) are provided with corresponding positioning holes (241), the slider (23) is provided with mounting holes (231) corresponding to the positioning holes (241), and a fastener (25) can penetrate through the positioning holes (241) and the mounting holes (231) to fix the slider sleeve (24) to the slider (23).

4. The brake head of claim 3, wherein: the axle center of the pulley (22) is provided with a through hole (221), and the fastening piece (25) can penetrate through the through hole (221) so that the pulley (22) rotates around the fastening piece (25).

5. The brake head of claim 2, wherein: the slide block (23) and the brake head (2) are integrally formed.

6. The brake head of claim 1, wherein: still including set up in rotation axis (26) of draw-in groove (211), the axle center of pulley (22) is provided with through-hole (221), pulley (22) can pass through-hole (221) cover is established rotation axis (26), and the winding rotation axis (26) are rotatory.

7. 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: the frame (1) is provided with brake heads (2) at both ends, the brake heads (2) being the brake heads (2) according to any of claims 1-6.

8. Bogie, its characterized in that: including a brake beam according to claim 7; the brake shoe support further comprises a sliding groove, and when the brake beam is in contact with a wheel for braking or the braking is relieved, the brake shoe support (2) is in contact with the bottom of the sliding groove through a pulley (22).