CN212635611U - Brake support and interference assembly tool thereof - Google Patents

Abstract

The utility model relates to a brake bracket and an interference assembly tool thereof, wherein the brake bracket consists of a bracket, a bushing and a gear sleeve; the bushing and the gear sleeve are respectively pressed into corresponding holes on the bracket and are connected with the bracket in an interference fit manner; the cylinder of bush and gear sleeve interference fit is equipped with the annular knurl structure, further improves interference fit's compactness, avoids leading to interference fit to lose efficacy because of the stopper receives the vibration impact. The utility model discloses corresponding downthehole on bush and the tooth cover support of being impressed respectively adopts interference fit. Meanwhile, the cylindrical surface of the bushing and the gear sleeve in interference fit is subjected to knurling treatment, so that the reliability of the interference fit is further improved, and the accident that the brake is damaged by driving safety due to failure of the interference fit caused by vibration impact is effectively avoided. The utility model has the characteristics of small, the quality is light, transmission efficiency is high, easy dismounting etc, but the rapid compensation brake shoe and the wearing and tearing volume of wheel keep invariable brake shoe clearance, but wide application in various rolling stock braking systems.

Description

Brake support and interference assembly tool thereof

Technical Field

The utility model relates to a railway rolling stock braking technical field is the stopper support of connecting stopper cylinder body and brake head support, a stopper support and interference assembly frock specifically says so.

Background

The railway rolling stock brake is impacted by vibration when braking, damages the brake bracket, can not keep the inherent clearance between brake head and the wheel, and then leads to the brake cooperation to lose efficacy, leads to driving safety's occurence of failure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a stopper support and interference fit frock thereof.

In order to realize the purpose, the utility model discloses a technical scheme is:

a brake bracket is composed of a bracket, a bushing and a gear sleeve; the bushing and the gear sleeve are respectively pressed into corresponding holes on the bracket and are connected with the bracket in an interference fit manner; the cylinder of bush and gear sleeve interference fit is equipped with the annular knurl structure, further improves interference fit's compactness, avoids leading to interference fit to lose efficacy because of the stopper receives the vibration impact.

A brake bracket interference assembly tool comprises a base, a bracket, a gear sleeve, a first support, a cover plate, a gear sleeve press-fitting guide shaft, a gear sleeve pressing block, a return spring, a bushing, a second support, a bushing pressing block, a screw and a gasket;

a first support and a second support are arranged on the base;

a gear sleeve press-fitting guide shaft is arranged in an inner cavity of the support I, and is provided with an upper support core, an upper guide slide block, a lower guide slide ring and a lower guide core;

the lower guide slip ring is connected with the inner wall of the support in a sliding fit manner, and the lower guide core is connected with the central shaft hole of the cover plate in a sliding fit manner; a return spring is arranged between the cover plate and the gear sleeve press-fitting guide shaft; the cover plate is arranged on a concave structure at the bottom of the support through a screw and a gasket;

the upper supporting core is in clearance connection with a central cavity of the gear sleeve pressing block, a gear sleeve pressing block is in clearance connection with an opening in the upper end of the gear sleeve, and an opening in the bottom end of the gear sleeve is sleeved on the step platform of the upper guide sliding block; three guiding and positioning positions in the press fitting process of the gear sleeve are realized, and the verticality of the gear sleeve after press fitting is ensured;

the second support is correspondingly connected with the lining hole of the bracket, the middle part of the second support is provided with a protruding lining support core, two sides of the second support are provided with support edges, and a lining groove is formed between the lining support core and the support edges; the supporting edge is abutted with the bracket; the bushing supporting core penetrates through the bushing hole to be in clearance connection with the bushing pressing block inner core, the groove of the bushing pressing block is in clearance connection with the bushing inner core, the inside of the bushing is of a solid supporting structure, the bushing pressing block is adopted to press the bushing into the bushing penetrating hole, and the end portion of the bushing is arranged in the bushing groove.

The utility model has the advantages that:

1. the utility model discloses corresponding downthehole on bush and the tooth cover support of being impressed respectively adopts interference fit. Meanwhile, the cylindrical surface of the bushing and the gear sleeve in interference fit is subjected to knurling treatment, so that the reliability of the interference fit is further improved, and the accident that the brake is damaged by driving safety due to failure of the interference fit caused by vibration impact is effectively avoided.

2. The utility model has the characteristics of small, the quality is light, transmission efficiency is high, easy dismounting etc, but the rapid compensation brake shoe and the wearing and tearing volume of wheel keep invariable brake shoe clearance, but wide application in various rolling stock braking systems.

3. The utility model discloses the frock carries out the pressure equipment to tooth cover and bush in the support equipment, can effectively avoid tooth cover, bush to be pressed askew phenomenon in the support equipment, has solved the jamming problem that leads to the unit stopper to take place from this, has effectively promoted the quality of unit stopper.

Drawings

Fig. 1 is a schematic view of a practical application of a brake bracket.

Fig. 2 is a schematic split view of the brake spider.

Fig. 3 is an assembly view of the brake bracket and the assembly fixture.

Fig. 4 is a completed assembly view of the brake carrier.

Fig. 5 is a schematic view of an assembly fixture base.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and reference numerals.

As shown in fig. 1-5, a brake bracket is composed of a bracket 2, a bush 9 and a gear sleeve 3; the bushing 9 and the gear sleeve 3 are respectively pressed into corresponding holes on the bracket, and the bushing and the gear sleeve are connected with the bracket in an interference fit manner;

the cylinder of bush and gear sleeve interference fit is equipped with the annular knurl structure, further improves interference fit's compactness, avoids leading to interference fit to lose efficacy because of the stopper receives the vibration impact.

A brake support interference assembly tool comprises a base 1, a support 2, a gear sleeve 3, a first support 4, a cover plate 5, a gear sleeve press-fitting guide shaft 6, a gear sleeve press block 7, a return spring 8, a bush 9, a second support 10, a bush press block 11, a screw 12 and a gasket 13;

a first support 4 and a second support 10 are arranged on the base 1;

a gear sleeve press-fitting guide shaft 6 is arranged in the inner cavity of the first support 4, and the gear sleeve press-fitting guide shaft 6 is provided with an upper support core 14, an upper guide slide block 15, a lower guide slide ring 16 and a lower guide core 17;

the lower guide sliding ring 16 is connected with the inner wall of the first support 4 in a sliding fit manner, and the lower guide core 17 is connected with the central shaft hole of the cover plate 5 in a sliding fit manner; a return spring 8 is arranged between the cover plate 5 and the gear sleeve press-fitting guide shaft 6; the cover plate 5 is arranged on a concave structure at the bottom of the first support 4 through a screw 12 and a gasket 13;

the upper supporting core 14 is in clearance connection with a central cavity of the gear sleeve pressing block 7, the gear sleeve pressing block 7 is in clearance connection with an opening at the upper end of the gear sleeve 3, and an opening at the bottom end of the gear sleeve 3 is sleeved on a step platform of the upper guide sliding block 15; three guiding and positioning positions in the press fitting process of the gear sleeve 3 are realized, and the verticality of the gear sleeve 3 after press fitting is ensured;

the second support 10 is correspondingly connected with a lining hole of the bracket 2, a protruding lining support core 18 is arranged in the middle of the second support 10, support edges 19 are arranged at two sides of the second support, and a lining groove 20 is arranged between the lining support core 18 and the support edges 19; the support edge 19 abuts against the bracket 2; the bushing supporting core 18 penetrates through a bushing hole to be in clearance connection with the inner core of the bushing pressing block 11, the groove 21 of the bushing pressing block 11 is in clearance connection with the inner core of the bushing 9, the solid supporting structure inside the bushing 9 is achieved, the bushing pressing block 11 is adopted to press the bushing 9 into the bushing hole, and the end portion of the bushing 9 is arranged in the bushing groove 20.

FIG. 2 shows the critical dimensions and tolerances of the various parts in the stent assembly. Wherein, the bracket is formed by punching Q235 plate and then is processed with planes alpha, beta and holes

And meets certain tolerance requirements. After the bushing and the gear sleeve are pressed into the support, the axes of the bushing and the gear sleeve are respectively superposed with the axes of the corresponding holes on the support, the axes of the bushing and the gear sleeve are parallel to each other, the parallelism tolerance is 0.015, the parallelism tolerance is also perpendicular to the support plane beta, and the verticality tolerance is 0.025. After the bushing is pressed into the bracket, the length of the bushing leaking out of the bracket from the two ends is equal. As shown in fig. 4, since the machined surface γ of the bracket serves as a support surface when the bushing is press-fitted, the bushing is biased, and the length of one end of the bushing that leaks out of the plane α of the bracket is significantly different in the circumferential direction, and the unit stopper is easily stuck when mounted on the unit stopper.

Therefore, when the bushing is pressed, the support plane alpha is required to be used as a supporting surface to ensure that the bushing is in a horizontal state, and the punching force is vertical to the horizontal plane; when the gear sleeve is pressed, the plane alpha is still in a horizontal state, the support plane delta is used as a support surface, the step end face with the size of 18.5 of the press-fitting part of the gear sleeve is tightly pressed with the support plane beta, and the axis of the gear sleeve is ensured to be vertical to the plane beta.

Examples

When the tool is used for press mounting operation, the support 2 is placed on the first support 4 and the second support 10, and press mounting of the bushing is completed first, and then press mounting of the gear sleeve is performed. When the bushing is pressed, the bushing pressing block 11 is respectively installed in place with the second support 10 and the bushing, a pressing head of a pressing machine acts on the top of the bushing pressing block 11 to generate vertical downward pressure, the bushing pressing block 11 and the bushing move downwards along the guide mechanism until the end face of the bushing is contacted with the second support 10, the bushing is pressed in place at the moment, and the lengths of the two ends of the bushing, which are leaked out of the support, are just equal.

And when the gear sleeve is pressed, assembling the gear sleeve and the gear sleeve pressing block 7. An inner hole of the gear sleeve pressing block 7 is in clearance fit with the gear sleeve press-fitting guide shaft 6, and the gear sleeve press-fitting guide shaft 6 is in clearance fit with the first support 4 and can move up and down in an inner cavity of the first support 4. In the press mounting process, a press head of the press acts on the top of the gear sleeve pressing block 7 to generate vertical downward pressure to drive the gear sleeve and the gear sleeve press mounting guide shaft 6 to vertically move downwards, and the return spring 8 is gradually compressed. When the cylindrical surface phi 48 with the length of the gear sleeve being 18.5mm is completely pressed into the support, the end face of the step at the phi 48mm of the gear sleeve is tightly contacted with the plane of the support, the height of the return spring is lowest, and the gear sleeve is pressed. After the pressure is removed, the bracket with the gear sleeve and the bushing pressed is taken down, and the reset spring restores the initial height before pressing and can be used for the next pressing operation.

Claims (2)

1. A brake spider, characterized in that,

the brake bracket consists of a bracket, a bushing and a gear sleeve; the bushing and the gear sleeve are respectively pressed into corresponding holes on the bracket and are connected with the bracket in an interference fit manner;

the cylinder of bush and gear sleeve interference fit is equipped with the annular knurl structure, further improves interference fit's compactness, avoids leading to interference fit to lose efficacy because of the stopper receives the vibration impact.

2. A brake bracket interference assembly tool is characterized in that,

the device comprises a base, a support, a gear sleeve, a first support, a cover plate, a gear sleeve press-fitting guide shaft, a gear sleeve press block, a return spring, a bushing, a second support, a bushing press block, a screw and a gasket;

a first support and a second support are arranged on the base;

a gear sleeve press-fitting guide shaft is arranged in an inner cavity of the support I, and is provided with an upper support core, an upper guide slide block, a lower guide slide ring and a lower guide core;

the lower guide slip ring is connected with the inner wall of the support in a sliding fit manner, and the lower guide core is connected with the central shaft hole of the cover plate in a sliding fit manner; a return spring is arranged between the cover plate and the gear sleeve press-fitting guide shaft; the cover plate is arranged on a concave structure at the bottom of the support through a screw and a gasket;

the upper supporting core is in clearance connection with a central cavity of the gear sleeve pressing block, a gear sleeve pressing block is in clearance connection with an opening in the upper end of the gear sleeve, and an opening in the bottom end of the gear sleeve is sleeved on the step platform of the upper guide sliding block; three guiding and positioning positions in the press fitting process of the gear sleeve are realized, and the verticality of the gear sleeve after press fitting is ensured;

the second support is correspondingly connected with the lining hole of the bracket, the middle part of the second support is provided with a protruding lining support core, two sides of the second support are provided with support edges, and a lining groove is formed between the lining support core and the support edges; the supporting edge is abutted with the bracket; the bushing supporting core penetrates through the bushing hole to be in clearance connection with the bushing pressing block inner core, the groove of the bushing pressing block is in clearance connection with the bushing inner core, the inside of the bushing is of a solid supporting structure, the bushing pressing block is adopted to press the bushing into the bushing penetrating hole, and the end portion of the bushing is arranged in the bushing groove.

Images