CN112228473A

CN112228473A - Self-aligning brake

Info

Publication number: CN112228473A
Application number: CN202011365504.5A
Authority: CN
Inventors: 李静敏; 徐康
Original assignee: He'nan Fengbao Heavy Industry Technology Co ltd
Current assignee: He'nan Fengbao Heavy Industry Technology Co ltd
Priority date: 2020-11-28
Filing date: 2020-11-28
Publication date: 2021-01-15
Anticipated expiration: 2040-11-28
Also published as: CN112228473B

Abstract

The invention provides a self-aligning brake, wherein a semicircular notch at one end of a brake shoe is supported on a supporting pin, the two brake shoes are connected with the supporting pin, a roller is arranged at the other end of each brake shoe, a cam shaft is arranged on a bottom plate between the two rollers, a cam is fixed on the cam shaft and is in contact with the roller, a return spring and a fixed spring are arranged between the two brake shoes, two friction linings are fixed on the excircle of each brake shoe, a strip adjusting hole is arranged on the cam, an adjusting block connected with the cam shaft is arranged in the strip adjusting hole and is matched with the strip adjusting hole for use, the invention can connect the cam through the adjusting block and the strip adjusting hole, the cam can reach a balance point according to the left-right swinging, so that the forces at the two ends of the cam are the same, and the position of the cam can be adjusted in real time according to the strip adjusting hole under, thereby achieving the purpose that the brake shoes on both sides can be synchronously braked.

Description

Self-aligning brake

Technical Field

The invention relates to the technical field of braking, in particular to a self-aligning brake.

Background

The brake is of an S-shaped camshaft type and comprises a bottom plate, a shoe, a friction plate, a supporting pin, a camshaft and a roller, wherein the brake shoes are symmetrically distributed and are driven by the camshaft to abut against a brake drum to work synchronously, the requirement on symmetry is high, and the problems of unstable braking force, noise and the like are caused because the brake shoes on two sides are asynchronous due to part machining, matching tolerance and brake drum jumping.

Disclosure of Invention

In order to solve the problems, the invention provides a self-aligning brake.

The object of the invention is achieved in the following way:

a self-aligning brake comprises a brake body, wherein the brake body comprises a bottom plate, two brake shoes, a dust cover, a return spring, a fixed spring, a supporting pin and a cam shaft, the supporting pin is fixed on the bottom plate, the center of the supporting pin is positioned on an extension line of a connecting line of the center of the cam shaft and the center of a brake bottom plate, a semicircular notch at one end of each brake shoe is supported on the supporting pin, the two brake shoes are connected with the supporting pin, rollers are arranged at the other ends of the brake shoes, the cam shaft is arranged on the bottom plate between the two rollers, a cam is fixed on the cam shaft and is contacted with the rollers, the return spring and the fixed spring are arranged between the two brake shoes, two friction linings are fixed on the excircle of each brake shoe, a strip adjusting hole is arranged on the cam, the strip adjusting hole is internally provided with an adjusting block connected with the cam shaft, and the adjusting block is matched with the strip adjusting hole for use.

And adjusting springs are arranged at two ends in the strip-shaped adjusting holes and are connected with the adjusting blocks.

The adjusting block is rectangular or oval.

Limiting plates matched with the adjusting blocks are arranged on two sides of the long-strip adjusting holes, and the adjusting blocks are fixedly connected with the limiting plates.

Compared with the prior art, the invention can be connected with the cam through the adjusting block and the strip adjusting hole, the cam can reach a balance point according to left and right swinging, the forces at two ends of the cam are the same, and the position of the cam can be adjusted in real time according to the strip adjusting hole under different brake air pressures, so that the purpose that the brake shoes at two sides can be synchronously braked is achieved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an enlarged schematic view of a in fig. 1.

The brake shoe brake comprises a dust cover 1, a friction lining 2, a brake shoe 3, a fixed spring 4, a return spring 5, a roller 6, a cam 7, a strip adjusting hole 8, an adjusting block 9 and an adjusting spring 10.

Detailed Description

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

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Therefore, the following detailed description of the embodiments of the present invention, provided in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention, on the basis of which all other embodiments, obtained by a person of ordinary skill in the art without inventive faculty, fall within the scope of the invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. To simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

As shown in the attached figures 1 to 2, the self-aligning brake comprises a brake body, wherein the brake body comprises a bottom plate, two brake shoes 3, a dust cover 1, a return spring 5, a fixed spring 4, a supporting pin and a camshaft, the supporting pin is fixed on the bottom plate, the center of the supporting pin is positioned on an extension line of a connecting line of the center of the camshaft and the center of the brake bottom plate, a semicircular notch at one end of each brake shoe 3 is supported on the supporting pin, the two brake shoes 3 are connected with the supporting pin, a roller 6 is arranged at the other end of each brake shoe 3, the camshaft is arranged on the bottom plate between the two rollers 6, a cam 7 is fixed on the camshaft, the cam 7 is in contact with the roller 6, the return spring 5 and the fixed spring 4 are arranged between the two brake shoes 3, two friction linings 2 are fixed on the excircle of each brake shoe 3, a strip-shaped adjusting hole 8 is arranged on the cam 7, and an adjusting, the adjusting block 9 is used in cooperation with the strip adjusting hole 8, the cam 7 is provided with the strip adjusting hole 8, the adjusting block 9 is arranged on the cam shaft, the adjusting block 9 is connected with the strip adjusting hole 8 on the cam 7, the cam shaft drives the cam 7 to rotate through the adjusting block 9, when the cam 7 rotates, if the force of the two ends of the cam 7 against the brake shoes 3 is different, the end with larger force of the cam 7 moves the cam 7 in the direction with smaller force under the action of the strip adjusting hole 8 until the force of the two ends of the cam 7 is the same as that of the two ends of the brake shoes 3, the strip adjusting hole 8 adjusts the stress of the cam 7, so that the two ends of the cam 7 always bear the same force, the brake shoes 3 are synchronously braked, the positions of the brake shoes can be adjusted in real time according to the strip adjusting hole 8 under different brake pressures, and the purpose that the brake shoes 3 on the two sides can be synchronously braked is achieved, the long-strip adjusting hole 8 is matched with the adjusting block 9, the adjusting block 9 is fixed, the cam 7 is finely adjusted under the action of the long-strip adjusting hole 8, the stress of the cam is always the same, the brake body is the prior art, the specific structure refers to application number CN200920218224.4, and the name is Chinese patent document of a punching and welding fixed brake, and the brake specifically comprises a bottom plate and a brake shoe 3, wherein a fixing bolt, the cam 7, a connecting sheet, a control rod and a supporting pin are arranged on the bottom plate, an arc-shaped groove is formed in one end of the brake shoe 3, the cam 7 is S-shaped, the supporting pin is arranged in the arc-shaped groove, the supporting pin is hinged to two ends of the cam 7, the cam 7 is connected with the control rod, the brake shoe 3 is shoe-shaped, and the brake shoe 3 is in a group of two; the other end of brake shoe 3 is provided with the fixed orifices, be provided with in the fixed orifices the gim peg, the both ends of connection piece are connected with the gim peg, be provided with brake drum, brake block and brake block screw on the arcwall face of every group brake shoe 3, electric welding is connected between brake drum and every group brake shoe 3, the brake block passes through the brake block screw is fixed on the brake drum, the brake block is the arc that the other end of one end is gradually thick, be provided with two on the brake drum the brake block, be provided with spring and spring gim peg on the brake shoe 3, the spring is located 7 lower extremes of cam, the spring passes through spring gim peg is connected with two sets ofly brake shoe 3

Both ends are equipped with adjusting spring 10 in rectangular regulation hole 8, adjusting spring 10 connects regulating block 9, both ends fixed connection adjusting spring 10 in rectangular regulation hole 8, and fixed connection regulating block 9 is again in adjusting spring 10 both ends, makes cam 7 more convenient, smooth when adjusting.

The adjusting block 9 is rectangular or oval, the shape of the adjusting block 9 is not unique, and the adjusting block 9 can not be self-driven in the strip adjusting hole 8 and can move along the adjusting block 9 in the strip adjusting hole 8.

Limiting plates matched with the adjusting blocks 9 are arranged on two sides of the strip adjusting holes 8, the adjusting blocks 9 are fixedly connected with the limiting plates, the limiting plates are matched with the adjusting blocks 9 to limit the positions of the adjusting blocks 9 in the front and at the back, and the adjusting blocks 9 are prevented from being separated from the strip adjusting holes 8.

The working process of the invention is as follows: the brake body comprises a bottom plate, two brake shoes 3, a dust cover 1, a return spring 5, a fixed spring 4, a supporting pin and a cam shaft, wherein the supporting pin is fixed on the bottom plate, the center of the supporting pin is positioned on an extension line of a connecting line of the center of the cam shaft and the center of the brake bottom plate, a semicircular notch at one end of each brake shoe 3 is supported on the supporting pin, the two brake shoes 3 are connected with the supporting pin, a roller 6 is arranged at the other end of each brake shoe 3, the cam shaft is arranged on the bottom plate between the two rollers 6, a cam 7 is fixed on the cam shaft, the cam 7 is contacted with the roller 6, the return spring 5 and the fixed spring 4 are arranged between the two brake shoes 3, two friction linings 2 are fixed on the excircle of each brake shoe 3, a long strip adjusting hole 8 is arranged on the cam 7, an adjusting block 9 connected with the cam shaft is arranged in the long strip, set up rectangular regulation hole 8 on cam 7, set up regulating block 9 on the camshaft, regulating block 9 is connected with rectangular regulation hole 8 on the cam 7, the camshaft passes through regulating block 9 and drives cam 7 and rotate, when cam 7 rotates, if the power that the brake shoe 3 was touched in the top of cam 7 both ends is different, the one end of the great power of cam 7 is under rectangular regulation hole 8's effect, move cam 7 toward the direction that the power is little, it is the same with the atress size at brake shoe 3 both ends to reach cam 7 both ends, rectangular regulation hole 8 is exactly the regulation cam 7 atress size, make cam 7 both ends receive the same size power always, thereby carry out synchronous braking to brake shoe 3, can come to carry out real-time position adjustment to it according to rectangular regulation hole 8 under the brake atmospheric pressure of difference, thereby reach the purpose that brake shoe 3 of both sides can both synchronous braking.

The invention can be connected with the cam 7 through the adjusting block 9 and the strip adjusting hole 8, the cam 7 can reach a balance point according to left and right swinging, so that the forces at two ends of the cam 7 are the same, and the position of the cam 7 can be adjusted in real time according to the strip adjusting hole 8 under different brake air pressures, thereby achieving the purpose that the brake shoes 3 at two sides can be synchronously braked.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the description herein, references to the terms "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 invention. In this specification, schematic representations of the above terms 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.

It should be understood that portions of embodiments of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a field programmable gate array, or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiments.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical features of the embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the combinations of the technical features should be considered as the range described in the present specification, and when the combinations of the technical features are contradictory or cannot be realized, the combinations of the technical features should be considered as not being present, and the combinations of the technical features are not within the protection scope of the present invention. Also, it will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the spirit of the principles of the invention.

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

Claims

1. The utility model provides a self aligning stopper, includes the stopper body, the stopper body includes that bottom plate, two brake shoes, dust cover, return spring, fixed spring, a rest pin and camshaft constitute, be fixed with a rest pin on the bottom plate, the rest pin center is located the extension line of camshaft center and brake shoe center line, the semicircular notch of one end of brake shoe supports on the rest pin, two brake shoes are connected the rest pin, the other end of brake shoe is equipped with the roller, be equipped with the camshaft on the bottom plate in the middle of two rollers, be fixed with the cam on the camshaft, cam and roller contact, return spring and fixed spring are installed to two brake shoes between, be fixed with two friction linings on every brake shoe excircle, its characterized in that: the cam is provided with a strip adjusting hole, an adjusting block connected with the cam shaft is arranged in the strip adjusting hole, and the adjusting block is matched with the strip adjusting hole for use.

2. The self-aligning brake of claim 1, wherein: and adjusting springs are arranged at two ends in the strip-shaped adjusting holes and are connected with the adjusting blocks.

3. The self-aligning brake of claim 2, wherein: the adjusting block is rectangular or oval.

4. The self-aligning brake of claim 1, wherein: limiting plates matched with the adjusting blocks are arranged on two sides of the long-strip adjusting holes, and the adjusting blocks are fixedly connected with the limiting plates.