CN108644264B - Manual adjusting device of air pressure disc brake - Google Patents
Manual adjusting device of air pressure disc brake Download PDFInfo
- Publication number
- CN108644264B CN108644264B CN201810892622.8A CN201810892622A CN108644264B CN 108644264 B CN108644264 B CN 108644264B CN 201810892622 A CN201810892622 A CN 201810892622A CN 108644264 B CN108644264 B CN 108644264B
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- Prior art keywords
- cap
- manual adjustment
- manual
- disc brake
- adjusting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/42—Slack adjusters mechanical non-automatic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a manual adjusting device of an air pressure disc brake, which comprises a manual adjusting shaft arranged on the air pressure disc brake, wherein the air pressure disc brake comprises a clamp body which plays a role of bearing and installing a support, the end part of the clamp body is provided with a support, the end parts of the manual adjusting shaft, which are exposed out of the clamp body and the support, are slidably connected with a manual adjusting cap, and the manual adjusting cap is provided with a structure for matching with a manual adjusting standard tool of the air pressure disc brake, and the manual adjusting standard tool is slidably connected with the manual adjusting cap; the structure of the manual adjustment cap matched with the manual adjustment shaft is arranged in the manual adjustment cap, and the structure of the manual adjustment cap matched with the manual adjustment standard tool is arranged outside the manual adjustment cap; the bearing strength of the manual adjustment cap is smaller than that of the manual adjustment shaft. The technical scheme has the beneficial effects that the pneumatic disc brake has simple structure and reasonable design according to the description of the scheme, avoids the non-professional adjustment of the braking gap of the pneumatic disc brake, and realizes the overload protection of the automatic gap adjusting mechanism and the manual adjustment assembly in the pneumatic disc brake.
Description
Technical Field
The present invention relates to a disc brake for a motor vehicle, and more particularly, to a manual adjustment device for a pneumatic disc brake.
Background
The pneumatic disc brake to which the present application relates has been disclosed in, for example, patent CN 201210048515. Fig. 1 of the drawings shows a prior art manual adjustment device for a pneumatic disc brake, wherein a manual adjustment shaft is one part of a clearance adjustment mechanism for the pneumatic disc brake, and the end part of the manual adjustment shaft is of a hexagonal head structure. When the gap of the air disc brake is manually adjusted, the special tool directly rotates the hexagon head at the end part of the manual adjusting shaft, and indirectly drives the automatic gap adjusting mechanism inside the air disc brake, so that the gap adjustment between the brake block and the brake disc is realized. The manual adjusting device for the pneumatic disc brake is easy to cause the pneumatic disc brake to be subjected to non-professional adjustment or have overlarge rotation moment to cause faults.
Disclosure of Invention
The invention aims at the defects existing in the prior art, and provides a manual adjusting device of the air pressure disc brake, which has the advantages of simple structure and reasonable design, avoids the braking gap of the air pressure disc brake from being adjusted in a non-professional way, and realizes the overload protection of an automatic adjusting mechanism and a manual adjusting assembly of the internal gap of the air pressure disc brake.
In order to achieve the above purpose, the invention provides a manual adjustment device of a pneumatic disc brake, comprising a manual adjustment shaft arranged on the pneumatic disc brake, wherein the pneumatic disc brake comprises a clamp body which plays a role of bearing and installing a support, the clamp body is provided with a cavity, the end part of the clamp body is provided with a support, the manual adjustment shaft penetrates through the cavity of the clamp body and the support to enter the outer space of the clamp body, the manual adjustment shaft is exposed out of the clamp body and the end part of the support and is in sliding connection with a manual adjustment cap, and the manual adjustment cap is provided with a structure for matching with a manual adjustment standard tool of the pneumatic disc brake, and the manual adjustment standard tool is in sliding connection with the manual adjustment cap; the structure of the manual adjustment cap matched with the manual adjustment shaft is arranged in the manual adjustment cap, and the structure of the manual adjustment cap matched with the manual adjustment standard tool is arranged outside the manual adjustment cap; the hand-adjusting cap bearing strength is smaller than that of the hand-adjusting shaft.
The end part of the hand adjusting shaft, which is positioned in the outer space of the clamp body, is provided with an external spline, the hand adjusting shaft is connected with the hand adjusting cap in a sliding manner through the external spline, and the hand adjusting cap is provided with an internal spline matched with the external spline; the external spline has a strength greater than the internal spline.
Further, the spline type of the manual adjusting shaft and the manual adjusting cap is an involute spline, the manual adjusting shaft is made of 45# high-quality carbon structural steel, and the manual adjusting cap is made of 35# high-quality structural steel cold-drawn steel; the working length of the manual adjustment shaft spline is 7mm, and the working height of the spline is 1mm; the working length of the manual adjustment cap spline is 3mm, and the working height is 1mm.
One end of the outer side of the hand-adjusting cap is provided with a cylinder, and the other end of the hand-adjusting cap is provided with a hexagonal head structure.
The outer part of the hand-adjusting cap is provided with a rubber cap connected with the support, the outer end of the support is provided with an annular groove, and one side of the bottom of the annular groove, which is close to the end part of the support, is provided with a raised step; the rubber cap comprises an annular cylinder which is sleeved at the bottom of the annular groove with smaller diameter; the rubber cap further comprises a cap body connected with the annular cylinder, the inner cavity of the cap body is matched with the shape of the end part of the support and the shape of the manual cap, the bottom edge of the cap body is provided with an annular convex rib which is radially inward, and the annular convex rib is matched with the side wall of the annular groove, which is close to the end part of the support.
In this scheme, the manual adjustment cap can break away from the independent existence of air pressure disk brake, places in car tool box, also can place on the stopper, for realizing this function, has set up a rubber cap for it is dustproof. The rubber cap material is rubber, prevents that dust and other impurity from getting into pneumatic disc stopper, sets up the cap body structure, conveniently opens and shuts, still is connected with the support when setting up annular structure in order to guarantee that the rubber cap is opened, prevents that the rubber cap from droing, annular structure inboard and support cylinder outside clearance fit, tip and cylinder step cooperation prevent that annular structure from breaking away from the support. The manual adjusting shaft is one part of a gap adjusting mechanism of the air pressure disc brake, and the structure and the working principle of the gap adjusting mechanism of the air pressure disc brake are disclosed. The hand-adjusting cap is in sliding connection with the end part of the hand-adjusting shaft, the connection mode of the hand-adjusting cap and the end part of the hand-adjusting shaft can be any design mode, spline fit is preferred, and transmission is more sensitive and stable. The setting part of the cooperation structure of the hand adjusting cap and the hand adjusting shaft can be arbitrary, the preferable setting is that the hand adjusting cap is arranged inside, namely the internal spline, and the hand adjusting shaft is arranged outside the end part, namely the external spline, so that the hand adjusting cap has the advantages of economy and functionality. The matching form of the hand-adjusting cap and the standard tool can be designed according to the standard tool, preferably a hexagon head, and the standard tool can be easily selected. The overload protection structure is preferably provided with a spline structure in the manual adjustment cap, namely, when the rotation moment applied to the manual adjustment cap exceeds the design moment, the spline fails, and the manual adjustment cap fails, but the manual adjustment shaft is not damaged. The structure of the hand-adjusting cap can be various. The hand-adjusting shaft is further developed in the prior art, and a structure matched with the internal structure of the hand-adjusting cap is designed at the position of the hand-adjusting shaft, where the clamp body is exposed.
The structure of the manual adjustment cap 1 can be selected in various ways, and the structure matched with the standard tool is preferably arranged outside and is a hexagonal head structure. One end is a hexagon head structure, one side is a cylinder, so that the hand is convenient to hold, the internal structure is preferably a spline structure, and the spline penetrates through the cylinder and is in spline fit with the manual adjusting shaft.
The overload structure attached to the manual adjustment cap is preferably arranged at the hexagonal head structure, when the rotation moment applied to the manual adjustment cap exceeds a design value, the internal structure internal spline is invalid, the manual adjustment cap is invalid, and the manual adjustment shaft spline is not damaged.
When the manual adjusting device of the air disc brake is used:
the rubber cap is opened, the hand adjusting cap is placed on the hand adjusting shaft, the hand adjusting cap is rotated by using a standard tool, the hand adjusting cap rotates the hand adjusting shaft through a spline, the hand adjusting shaft drives the automatic gap adjusting mechanism of the air pressure disc brake, and the gap between the brake block and the brake disc is adjusted, so that the manual adjusting function of the air pressure disc brake is realized. If the rotational torque applied to the manual adjustment cap exceeds a set point, the manual adjustment cap fails to protect the associated internal components of the pneumatic disc brake.
When the manual adjusting device of the pneumatic disc brake is idle:
the hand-adjusting cap can be reserved on the air pressure disc type brake and is buckled with the rubber cap. The manual adjustment cap can also be taken off from the air pressure disc brake and put into a vehicle-mounted tool box.
The technical scheme has the beneficial effects that according to the description of the scheme, the structure is simple, the implementation is easy, the braking gap of the air pressure disc brake is prevented from being adjusted in a non-professional mode, and overload protection of an automatic gap adjusting mechanism and a manual adjusting assembly in the air pressure disc brake is realized.
Drawings
Examples of the invention are described below with reference to the accompanying drawings:
fig. 1 is a prior art manual adjustment device for an air disc brake.
FIG. 2 is a three-dimensional schematic view of a manual adjustment device for an air disc brake according to the present invention;
FIG. 3 is an air disc brake of the present invention;
FIG. 4 is a partial cross-sectional view of a manual adjustment device for a pneumatic disc brake according to the present invention;
FIG. 5 is a three-dimensional schematic view of a rubber cap for a pneumatic disc brake according to the present invention;
in the figure: 1. a hand-adjusting cap; 1a, a hexagonal head structure; 1b, internal structure; 1c, a cylinder; 2. manually adjusting a shaft; 3. an air pressure disc brake; 4. a clamp body; 5. a rubber cap; 5a, a cap body; 5b, an annular cylinder; 6. and (5) a support.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
As shown in fig. 2-5, the present embodiment is a manual adjustment device of a pneumatic disc brake, including a hand adjustment shaft 2 disposed on a pneumatic disc brake 3, the pneumatic disc brake 3 includes a clamp body 4 serving as a bearing and mounting support, the clamp body 4 is provided with a cavity, a support 6 is disposed at an end of the clamp body 4, the hand adjustment shaft 2 passes through the cavity of the clamp body 4 and the support 6 to enter an external space of the clamp body 4, the hand adjustment shaft 2 is exposed at the ends of the clamp body 4 and the support 6 and is slidably connected with a hand adjustment cap 1, an external spline is disposed at an end of the hand adjustment shaft 2 located in the external space of the clamp body 4, the hand adjustment shaft 2 is slidably connected with a hand adjustment cap 1 through the external spline, and an internal structure 1b matched with the external spline is provided with an internal spline; the strength of the external spline is greater than the strength of the internal spline. The spline type of the manual adjustment shaft 2 and the manual adjustment cap 1 is an involute spline, the manual adjustment shaft 2 is made of 45# high-quality carbon structural steel, and the manual adjustment cap 1 is made of 35# high-quality structural steel cold-drawn steel; the working length of the spline of the manual adjustment shaft 2 is 7mm, and the working height of the spline is 1mm; the working length of the spline of the manual adjustment cap 1 is 3mm, and the working height is 1mm.
One end of the outer side of the hand-adjusting cap 1 is provided with a cylinder 1c, and one end is provided with a hexagonal head structure 1a.
The outer part of the hand-adjusting cap 1 is provided with a rubber cap 5 connected with a support 6, the outer end of the support 6 is provided with an annular groove, and one side of the bottom of the annular groove, which is close to the end part of the support, is provided with a raised step; the rubber cap 5 comprises an annular cylinder 5a, and the annular cylinder 5a is sleeved at the bottom of the annular groove with smaller diameter; the rubber cap 5 further comprises a cap body 5b connected with the annular cylinder 5a, the inner cavity of the cap body 5b is matched with the shape of the end part of the support and the shape of the manual adjustment cap 1, the bottom edge of the cap body 5b is provided with an annular convex edge which is radially inwards, and the annular convex edge is matched with the side wall of the end part of the annular groove, which is close to the support.
The structure of the manual adjustment cap 1 of the present patent can be selected from various ones, and as shown in fig. 3, the structure which is preferably matched with the standard tool is arranged outside and is a hexagonal head structure 1a. Namely, one end is a hexagon head structure 1a, one side is a cylinder 1c, so that the hand is convenient to hold, the inner structure 1b is preferably a spline structure, and a spline penetrates through the cylinder and is in spline fit with the manual adjustment shaft 2.
The overload structure attached to the manual adjustment cap 1 is preferably arranged at the position of the hexagonal head structure 1a, when the rotation moment applied to the manual adjustment cap 1 exceeds a design value, the internal spline of the internal structure 1b fails, the manual adjustment cap 1 also fails, and the spline of the manual adjustment shaft is not damaged.
The implementation mode is as follows:
the manual adjusting shaft 2 is in spline fit with the manual adjusting cap 1, the spline type is an involute spline, and materials and involute parameters of the manual adjusting shaft and the manual adjusting cap are designed differently.
The manual adjusting shaft is made of 45# high-quality carbon structural steel, and the manual adjusting cap is made of 35# high-quality structural steel cold drawn steel.
Involute spline-related parameters are shown in table 1. Determining a maximum torque T according to the fatigue strength of components of an air disc brake adjusting mechanism max I.e. the rotational torque T exerted on the manual shaft spline must not exceed T max . The involute spline parameters of the manual adjusting shaft and the manual adjusting cap are designed according to a mechanical design manual, the tooth profile of the manual adjusting shaft and the involute spline parameters conform to DIN 5840-1, the involute strength calculating formula is shown as formula (1), and the manual adjusting shaft and the manual adjusting cap are according to formulas (1) and T max And the space of the manual shaft 2 is designed with the spline parameters of the manual shaft, the working length of the involute spline of the manual shaft 2 (symbol I is used Manual adjustment shaft The representation) the space requirement of the rubber cap 5 needs to be considered when the manual adjustment shaft 2 is designed, namely, the manual adjustment shaft 2 meets the internal space of the rubber cap 5.
The involute spline of the hand-adjusting cap is designed according to the formula (2), the formula (3) and the space of the hand-adjusting cap 1, and the working length (with the symbol l Hand-adjusting cap Expressed) satisfies equation 3.
≤σ p （1）
Table 1: involute parameter symbology
（2）
I Manual adjustment shaft ≥n×l Hand-adjusting cap (wherein n is a safety factor, > 2,) (3)
Remarks are that the working length of the manual adjustment shaft spline is 7mm, the working height of the spline is 1mm, the working length of the manual adjustment cap spline is 3mm, and the working height is 1mm.
The manual adjusting shaft 2 is one part of an automatic gap adjusting mechanism of the air pressure disc brake 1, a spline matched with the manual adjusting cap 1 is arranged at the position of the manual adjusting shaft 2, which is exposed out of the clamp body 4, and the structure and the working principle of the gap adjusting mechanism of the air pressure disc brake 3 are disclosed.
The rubber cap 5 is made of rubber and is used for preventing dust and other impurities. The cap body 5a is arranged, the operation is convenient, the rubber cap can be opened by lifting the cap body by hand, the inner side of the annular cylinder 5b is in clearance fit with the outer cylinder of the support 6, the end part of the annular cylinder is in step fit with the support 6, and the rubber cap 5 is prevented from being separated from the support 6.
When the manual adjustment device of the air disc brake 3 is used:
the rubber cap 5 is opened, the hand adjusting cap 1 is placed on the hand adjusting shaft 2, the hand adjusting cap 3 is rotated by using a standard tool, the hand adjusting cap 3 rotates the hand adjusting shaft 2 through a spline, the hand adjusting shaft 2 drives the automatic gap adjusting mechanism of the air pressure disc brake 3, the gap between the brake block and the brake disc is adjusted, and the manual adjusting function of the air pressure disc brake 3 is realized. If the rotational torque applied to the manual adjustment cap 1 is set, the manual adjustment cap 1 fails to protect the relevant internal parts of the air pressure disc brake 3.
When the manual adjustment device of the air disc brake 3 is idle:
the manual adjustment cap 1 can be kept on the air pressure disc type brake 3, and the rubber cap 5 is buckled. The manual adjustment cap 1 can also be taken off from the air pressure disc brake 3 and put into a vehicle tool box.
The technical features of the present invention that are not described in the present invention can be realized by or are realized by the prior art, and the description is not limited to the above-mentioned embodiments, and the present invention is not limited to the above-mentioned embodiments, and the changes, modifications, additions or substitutions made by those skilled in the art within the spirit and scope of the present invention shall fall within the protection scope of the present invention.
Claims (3)
1. The manual adjustment device of the pneumatic disc brake comprises a hand adjustment shaft arranged on the pneumatic disc brake, wherein the pneumatic disc brake comprises a clamp body which plays a role of bearing and installing a support, the clamp body is provided with a cavity, the end part of the clamp body is provided with a support, and the hand adjustment shaft penetrates through the cavity of the clamp body and the support to enter the outer space of the clamp body;
the structure of the manual adjustment cap matched with the manual adjustment shaft is arranged in the manual adjustment cap, and the structure of the manual adjustment cap matched with the manual adjustment standard tool is arranged outside the manual adjustment cap;
the bearing strength of the manual adjustment cap is smaller than that of the manual adjustment shaft;
an external spline is arranged at the end part of the hand-adjusting shaft, which is positioned in the external space of the clamp body, the hand-adjusting shaft is connected with the hand-adjusting cap in a sliding manner through the external spline, and the hand-adjusting cap is provided with an internal spline matched with the external spline; the strength of the external spline is greater than that of the internal spline;
the outer part of the hand-adjusting cap is provided with a rubber cap connected with the support, the outer end of the support is provided with an annular groove, and one side of the bottom of the annular groove, which is close to the end part of the support, is provided with a raised step; the rubber cap comprises an annular cylinder which is sleeved at the bottom of the annular groove with smaller diameter; the rubber cap further comprises a cap body connected with the annular cylinder, the inner cavity of the cap body is matched with the shape of the end part of the support and the shape of the manual cap, the bottom edge of the cap body is provided with an annular convex rib which is radially inward, and the annular convex rib is matched with the side wall of the annular groove, which is close to the end part of the support.
2. The manual adjustment device of a pneumatic disc brake according to claim 1, wherein the spline type of the manual adjustment shaft and the manual adjustment cap is involute spline, the manual adjustment shaft material is 45# high quality carbon structural steel, and the manual adjustment cap material is 35# high quality structural steel cold drawn steel; the working length of the manual adjustment shaft spline is 7mm, and the working height of the spline is 1mm; the working length of the manual adjustment cap spline is 3mm, and the working height is 1mm.
3. A manual adjustment device for a disc brake according to claim 1 or 2, wherein the outer end of the manual adjustment cap is provided with a cylindrical body and one end is provided with a hexagonal head structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810892622.8A CN108644264B (en) | 2018-08-07 | 2018-08-07 | Manual adjusting device of air pressure disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810892622.8A CN108644264B (en) | 2018-08-07 | 2018-08-07 | Manual adjusting device of air pressure disc brake |
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| Publication Number | Publication Date |
|---|---|
| CN108644264A CN108644264A (en) | 2018-10-12 |
| CN108644264B true CN108644264B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810892622.8A Active CN108644264B (en) | 2018-08-07 | 2018-08-07 | Manual adjusting device of air pressure disc brake |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847368A (en) * | 2021-09-17 | 2021-12-28 | 中国重汽集团济南动力有限公司 | Intelligent monitoring device and method for heavy truck disc brake |
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