CN217623585U - Brake shoe clearance adjusting device - Google Patents
Brake shoe clearance adjusting device Download PDFInfo
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- CN217623585U CN217623585U CN202221102315.3U CN202221102315U CN217623585U CN 217623585 U CN217623585 U CN 217623585U CN 202221102315 U CN202221102315 U CN 202221102315U CN 217623585 U CN217623585 U CN 217623585U
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- brake shoe
- spring
- elastic
- groove
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Abstract
The utility model discloses a brake shoe clearance adjustment device, include: the suspension mechanism, the brake shoe mechanism and the elastic component are arranged on the brake shoe mechanism; the brake shoe mechanism is rotationally connected with the suspension mechanism, and a groove is formed in the brake shoe mechanism; the elastic assembly comprises a rotating piece and an elastic mechanism, one end of the rotating piece is inserted into the groove in a matching mode, and when the rotating piece rotates, one end of the rotating piece is elastically abutted to the inner side wall of the groove; the other end of the rotating piece is connected with the elastic mechanism, and one end, far away from the rotating piece, of the elastic mechanism is elastically abutted to the suspension mechanism. The utility model discloses can simply effectually make and keep certain clearance between brake shoe mechanism and the wheel tread to avoid brake shoe mechanism eccentric wear.
Description
Technical Field
The utility model relates to a brake shoe technical field especially relates to a brake shoe clearance adjustment device.
Background
In adopting the davit formula foundation brake system, the brake shoe is installed on the brake head holds in the palm, suspend the brake head in midair at wheel tread middle part position under to through the hanger plate, when the vehicle braking, brake cylinder thrust passes through lever mechanism on power transmission to the brake shoe, make the brake shoe compress tightly the wheel tread, in order to reach the braking purpose, because the focus of brake shoe is lower, when the vehicle braking is alleviated, the brake head can rotate along with the fixed point of round pin axle, lead to brake shoe upper portion to paste the wheel tread, operating duration has been of a specified duration like this and can make the brake shoe wear condition inconsistent from top to bottom, cause the brake shoe eccentric wear, direct influence brake shoe life-span, how simply effectual messenger has certain clearance between brake shoe and the wheel tread, in order to avoid the brake shoe eccentric wear, for the problem that needs to solve urgently.
To the above-mentioned problem, chinese utility model patent, the grant publication number is CN203391800U, discloses a brake head device for locomotive brake, and its main technical points are: the brake head is characterized in that a novel technology of a special friction pair formed by a cushion block made of a high-friction-coefficient synthetic material and two surfaces of a wedge block of a screw rod head is adopted, the brake head can rotate around a screw rod of the brake head under the action of a reaction force, an angle is automatically adjusted to enable a brake shoe to be completely attached to a tread, and meanwhile, under the extrusion force of disc springs on two sides of the brake head, the brake head is subjected to a friction force which hinders relative movement of the brake head, and the locking of an inclination angle is kept.
To the prior art, the structure is more complicated, the product economic benefits are lower, to sum up, how to simply and effectively make certain clearance between brake shoe and the wheel tread, avoid the problem of brake shoe eccentric wear, do not put forward effective solution yet at present.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a brake shoe clearance adjusting device to solve the technical problem that the eccentric wear of the brake shoe cannot be simply and effectively avoided in the prior art.
In order to achieve the above technical purpose, the technical solution of the utility model provides a brake shoe clearance adjusting device, include: a suspension mechanism, a shoe mechanism and an elastic component; the brake shoe mechanism is rotationally connected with the suspension mechanism, and a groove is formed in the brake shoe mechanism; the elastic assembly comprises a rotating piece and an elastic mechanism, one end of the rotating piece is inserted into the groove in a matching mode, and when the rotating piece rotates, one end of the rotating piece is elastically abutted to the inner side wall of the groove; the other end of the rotating piece is connected with the elastic mechanism, and one end, far away from the rotating piece, of the elastic mechanism is elastically abutted to the suspension mechanism.
Further, the rotating member comprises a rotating seat and an elastic member, a convex block matched with the groove is formed on one side of the rotating seat, at least one first resisting part is arranged on the side surface of the convex block, at least one second resisting part is arranged on the inner side wall of the groove, and the elastic member is arranged in the groove and elastically connected with the first resisting part and the second resisting part; the other side of the rotating seat is connected with the elastic mechanism.
Furthermore, a groove cover is detachably connected to the groove, the first resisting part is arranged on the lower portion of the protruding block, and the upper portion of the protruding block penetrates through the groove cover and is fixedly connected with the rotating seat.
Furthermore, the elastic part is a torsion spring, the torsion spring is sleeved on the bump, one end of the torsion spring is connected with the first blocking part, and the other end of the torsion spring is connected with the second blocking part.
Furthermore, the upper part of the bump is of a first cylindrical structure, the lower part of the bump is of a second cylindrical structure, the diameter of the first cylindrical structure is smaller than that of the second cylindrical structure, and the first cylindrical structure and the second cylindrical structure are axially fixed; the first resisting part is a rib which extends longitudinally along the side surface of the second cylindrical structure.
Furthermore, hang in midair the mechanism and include hanger plate and mount pad, the hanger plate with mount pad fixed connection, the one end that the elastic mechanism kept away from the rotating member with mount pad elasticity butt.
Further, the elastic mechanism comprises an adjusting screw, a first spring and a nut; one end of the adjusting screw rod is fixedly connected with the rotating piece, and the other end of the adjusting screw rod movably penetrates through the mounting seat and is in threaded connection with the nut; the first spring is sleeved on the adjusting screw rod, one end of the first spring is elastically abutted to the mounting seat, and the other end of the first spring is elastically abutted to one end of the adjusting screw rod.
Furthermore, the elastic mechanism further comprises a second spring, the second spring is sleeved at the other end of the adjusting screw rod, one end of the second spring is elastically connected with the mounting seat, and the other end of the second spring is elastically abutted to the nut.
Further, the brake shoe mechanism comprises a brake shoe and a brake head, the brake shoe is fixedly connected with the brake head, the brake head is rotatably connected with the hanger plate, and the groove is formed in the brake head.
Furthermore, pin holes are formed in the brake head support and the hanging plate, and pin shafts are inserted into the pin holes in a matched mode.
Compared with the prior art, the beneficial effects of the utility model include: a groove is formed in the brake shoe mechanism, one end of the rotating piece is inserted into the groove in a matched mode, and when the rotating piece rotates, one end of the rotating piece is elastically abutted to the inner side wall of the groove; the other end of the rotating piece is connected with an elastic mechanism, and one end of the elastic mechanism, which is far away from the rotating piece, is elastically abutted against the suspension mechanism; through the arrangement mode, a certain gap can be simply and effectively kept between the brake shoe mechanism and the wheel tread so as to avoid eccentric wear of the brake shoe mechanism.
Drawings
FIG. 1 is a schematic view of a brake shoe clearance adjusting device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the structure according to A in FIG. 1;
in the figure: 1. the brake shoe comprises a suspension mechanism, 11, a suspension plate, 12, a mounting seat, 2, a brake shoe mechanism, 21, a brake shoe, 22, a brake shoe holder, 3, an elastic component, 31, a rotating piece, 311, a rotating seat, 3111, a lug, 312, an elastic piece, 32, an elastic mechanism, 321, an adjusting screw rod, 322, a first spring, 323, a nut, 324, a second spring, a first resisting part and b, wherein the suspension mechanism is arranged on the mounting seat, the brake shoe mechanism is arranged on the mounting seat, and the elastic component is arranged on the mounting seat.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
As shown in fig. 1-2, the utility model provides a brake shoe clearance adjusting device, include: suspension means 1, shoe means 2 and elastic assembly 3.
The brake shoe mechanism 2 is rotatably connected with the suspension mechanism 1, and a groove is formed in the brake shoe mechanism 2, so that when the vehicle is braked, the brake shoe mechanism 2 and the suspension mechanism 1 rotate relatively, and the brake shoe mechanism 2 can press the wheel tread (part of the structure is not shown in the attached drawings).
The elastic component 3 comprises a rotating piece 31 and an elastic mechanism 32, one end of the rotating piece 31 is inserted into the groove in a matching way, and when the rotating piece 31 rotates, one end of the rotating piece 31 is elastically abutted with the inner side wall of the groove; the other end of the rotary member 31 is connected to an elastic mechanism 32, and one end of the elastic mechanism 32 remote from the rotary member 31 is elastically abutted against the suspension mechanism 1.
In this embodiment, when the vehicle is braked, the brake shoe mechanism 2 deflects around the suspension mechanism 1 and simultaneously drives the rotating member 31 to deflect, at this time, one end of the rotating member 31 elastically presses the inner side wall of the groove, and one end of the elastic mechanism 32 away from the rotating member 31 elastically compresses; when the vehicle is braked and relieved, because the gravity center of the brake shoe mechanism 2 is lower, the brake shoe mechanism 2 can deflect around the suspension mechanism 1 in the opposite direction, and simultaneously the rotating piece 31 is driven to deflect in the opposite direction, at the moment, one end of the rotating piece 31 can still extrude the inner side wall of the groove, and one end of the elastic mechanism 32, which is far away from the rotating piece 31, can elastically stretch, so that the brake shoe mechanism 2 is prevented from deflecting in the opposite direction, the upper part of the brake shoe mechanism 2 is prevented from being attached to the wheel tread, eccentric wear is caused, and meanwhile, a certain gap is ensured to be formed between the brake shoe mechanism 2 and the wheel tread.
In order to more stably realize the elastic deformation of the rotating member 31 in the inner side wall of the groove, the structure of the rotating member 31 is further defined.
Referring to fig. 2, the rotating member 31 includes a rotating base 311 and an elastic member 312, a protrusion 3111 matched with the groove is formed on one side of the rotating base 311, a side surface of the protrusion 3111 has at least one first resisting portion a, an inner side wall of the groove has at least one second resisting portion b, and the elastic member 312 is disposed in the groove and elastically connected with the first resisting portion a and the second resisting portion b; the other side of the rotary seat 311 is connected with the elastic mechanism 32.
In this embodiment, preferably, two first stopping portions a are formed on the side surface of the protrusion 3111, and two second stopping portions b are formed on the inner side wall of the groove, when the rotating base 311 deflects in the forward direction or in the reverse direction, the elastic member 312 between the first stopping portions a and the second stopping portions b can deform, wherein if the rotating member 31 deflects in the reverse direction, the elastic member 312 deforms and generates a reaction force to indirectly prevent the brake shoe mechanism 2 from deflecting in the reverse direction, so as to prevent the brake shoe mechanism 2 from being worn out.
Further, in order to avoid the elastic element 312 from falling off from the groove, a groove cover may be detachably mounted on the groove, wherein the first abutting portion a is disposed at the lower portion of the protrusion 3111, and the upper portion of the protrusion 3111 passes through the groove cover and is fixedly connected to the rotary seat 311.
Still further, the structure of the elastic member 312 is limited, and the elastic member 312 is preferably an arc-shaped spring, one end of the arc-shaped spring is connected to the first abutting portion a, and the other end of the arc-shaped spring is connected to the second abutting portion b.
Furthermore, the upper portion of the bump 3111 is a first cylindrical structure, the lower portion of the bump 3111 is a second cylindrical structure, the diameter of the first cylindrical structure is smaller than that of the second cylindrical structure, and the first cylindrical structure and the second cylindrical structure are axially fixed; the first resisting part a is a rib which extends longitudinally along the side surface of the second cylindrical structure.
In order to more stably realize the elastic deformation of the elastic mechanism 32 and the suspension mechanism 1, the structures of the elastic mechanism 32 and the suspension mechanism 1 are further defined respectively.
Referring to fig. 1, the suspension mechanism 1 includes a hanging plate 11 and a mounting seat 12, the hanging plate 11 is fixedly connected to the mounting seat 12, and one end of the elastic mechanism 32 away from the rotating member 31 is elastically abutted to the mounting seat 12.
The elastic mechanism 32 comprises an adjusting screw 321, a first spring 322 and a nut 323; one end of the adjusting screw 321 is fixedly connected with the rotating member 31, and the other end of the adjusting screw 321 movably penetrates through the mounting base 12 and is in threaded connection with the nut 323; the first spring 322 is sleeved on the adjusting screw 321, and one end of the first spring 322 is elastically connected to the mounting seat 12, and the other end of the first spring 322 is elastically connected to one end of the adjusting screw 321.
In this embodiment, the first spring 322 is stretched or compressed by the forward or reverse deflection of the rotary base 311, wherein if the rotary member 31 is deflected in the reverse direction, so that the first spring 322 is elastically stretched, and the elastic member 312 is deformed and generates a reaction force, the first spring 322 and the elastic member 312 cooperate with each other to prevent the brake shoe mechanism 2 from deflecting in the reverse direction, so as to prevent the brake shoe mechanism 2 from being worn out.
Further, the elastic mechanism 32 further includes a second spring 324, the second spring 324 is sleeved on the other end of the adjusting screw 321, wherein one end of the second spring 324 is elastically abutted to the mounting seat 12, and the other end of the second spring 324 is elastically abutted to the nut 323.
In this embodiment, if the rotating member 31 deflects in the opposite direction to elastically stretch the first spring 322, the second spring 324 is elastically compressed, and the elastic member 312 is deformed to generate a reaction force, the first spring 322, the second spring 324 and the elastic member 312 cooperate to prevent the brake shoe mechanism 2 from deflecting in the opposite direction, so as to prevent the brake shoe mechanism 2 from being worn out.
In addition, the brake shoe mechanism 2 comprises a brake shoe 21 and a brake head 22, the brake shoe 21 is fixedly connected with the brake head 22, the brake head 22 is rotatably connected with the hanger plate 11, and the groove is formed in the brake head 22; the brake head 22 and the hanger plate 11 are provided with pin holes, and pin shafts are inserted in the pin holes in a matching manner.
Those not described in detail in this specification are well within the skill of the art.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. A brake shoe clearance adjustment device, comprising: a suspension mechanism, a shoe mechanism and an elastic component;
the brake shoe mechanism is rotationally connected with the suspension mechanism, and a groove is formed in the brake shoe mechanism;
the elastic assembly comprises a rotating piece and an elastic mechanism, one end of the rotating piece is inserted into the groove in a matching mode, and when the rotating piece rotates, one end of the rotating piece is elastically abutted to the inner side wall of the groove; the other end of the rotating piece is connected with the elastic mechanism, and one end, far away from the rotating piece, of the elastic mechanism is elastically abutted to the suspension mechanism.
2. The brake shoe clearance adjusting device according to claim 1, wherein the rotating member comprises a rotating base and an elastic member, a protrusion is formed on one side of the rotating base and is matched with the groove, the side surface of the protrusion is provided with at least one first resisting part, the inner side wall of the groove is provided with at least one second resisting part, and the elastic member is arranged in the groove and is elastically connected with the first resisting part and the second resisting part; the other side of the rotating seat is connected with the elastic mechanism.
3. The brake shoe clearance adjustment apparatus of claim 2, wherein a slot cover is detachably connected to the groove, the first stopping portion is disposed at a lower portion of the protrusion, and an upper portion of the protrusion passes through the slot cover and is fixedly connected to the rotary base.
4. The brake shoe clearance adjustment apparatus according to claim 3, wherein the elastic member is an arc-shaped spring, one end of the arc-shaped spring is connected to the first abutting portion, and the other end of the arc-shaped spring is connected to the second abutting portion.
5. The brake shoe slack adjuster according to claim 4, wherein the upper portion of the boss is a first cylindrical structure and the lower portion of the boss is a second cylindrical structure, the first cylindrical structure having a smaller diameter than the second cylindrical structure, and the first cylindrical structure being axially fixed to the second cylindrical structure; the first resisting part is a rib which extends longitudinally along the side surface of the second cylindrical structure.
6. The brake shoe slack adjuster according to claim 1, wherein the suspension mechanism comprises a suspension plate and a mounting seat, the suspension plate is fixedly connected with the mounting seat, and one end of the elastic mechanism, which is far away from the rotary member, is elastically abutted with the mounting seat.
7. The brake shoe clearance adjustment apparatus of claim 6, wherein the resilient mechanism comprises an adjustment screw, a first spring and a nut; one end of the adjusting screw rod is fixedly connected with the rotating piece, and the other end of the adjusting screw rod movably penetrates through the mounting seat and is in threaded connection with the nut; the first spring is sleeved on the adjusting screw rod, one end of the first spring is elastically connected with the mounting seat, and the other end of the first spring is elastically connected with one end of the adjusting screw rod.
8. The device of claim 7, wherein the resilient mechanism further comprises a second spring, the second spring is sleeved on the other end of the adjusting screw, one end of the second spring elastically abuts against the mounting seat, and the other end of the second spring elastically abuts against the nut.
9. The brake shoe slack adjuster of claim 6, wherein the brake shoe mechanism includes a brake shoe and a brake head, the brake shoe being fixedly attached to the brake head, the brake head being pivotally attached to the hanger plate, the groove opening in the brake head.
10. The brake shoe clearance adjustment apparatus of claim 9, wherein the brake head and the hanger plate each have a pin hole, and a pin is fittingly inserted into the pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221102315.3U CN217623585U (en) | 2022-05-06 | 2022-05-06 | Brake shoe clearance adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221102315.3U CN217623585U (en) | 2022-05-06 | 2022-05-06 | Brake shoe clearance adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217623585U true CN217623585U (en) | 2022-10-21 |
Family
ID=83653373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221102315.3U Active CN217623585U (en) | 2022-05-06 | 2022-05-06 | Brake shoe clearance adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217623585U (en) |
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2022
- 2022-05-06 CN CN202221102315.3U patent/CN217623585U/en active Active
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