CN218207549U - Auxiliary wet type braking device for commercial vehicle - Google Patents
Auxiliary wet type braking device for commercial vehicle Download PDFInfo
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- CN218207549U CN218207549U CN202222161177.2U CN202222161177U CN218207549U CN 218207549 U CN218207549 U CN 218207549U CN 202222161177 U CN202222161177 U CN 202222161177U CN 218207549 U CN218207549 U CN 218207549U
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Abstract
The utility model relates to a commercial car assists wet brake device, including the air brake device, the wet brake device that provides the braking by the air brake device, the utility model discloses a pneumatic drive, distinguish and engine brake, eddy current retarder, hydraulic retarder; the friction plate is connected with the spline shaft through a spline and rotates, the dual steel sheet is matched with a notch of the lower brake shell for stopping rotation, and the friction plate and the dual steel sheet are extruded by the air chamber through the push disc to generate braking force; the interior of the spline shaft is lubricated by the dual steel sheets and the friction plates through oil ducts, and oil holes of the spline shaft are respectively over against the dual steel sheets, so that good lubrication of all the friction plates is ensured; the utility model discloses can show and improve commercial car and last braking capability in long downhill path highway section, the auxiliary brake of specially adapted long distance downhill path.
Description
Technical Field
The utility model relates to an automobile manufacturing technical field especially relates to a supplementary wet braking device of commercial car.
Background
The downhill safety guarantee of the commercial vehicle is always a generally concerned problem in the industry, the commercial vehicle runs on a long downhill road section, and because the continuous braking capacity is insufficient, serious and extra traffic accidents of vehicle damage and people death are often caused, under the condition, an auxiliary brake is often necessary to be additionally arranged, the conventional whole vehicle is provided with the auxiliary brake which mainly comprises an engine brake, an eddy current retarder and a hydraulic retarder, and three types of auxiliary braking related information are shown in a table 1;
TABLE 1 three brake performances of a prior art full vehicle equipped
SUMMERY OF THE UTILITY MODEL
The utility model aims at being different from above-mentioned three kinds of auxiliary brake and providing a brand-new auxiliary brake structure, adopt air pressure drive, multi-disc formula wet brake, the device can show the auxiliary brake who improves commercial car in long downhill path highway section continuous braking ability, specially adapted long distance downhill path.
The utility model discloses an adopt following technical scheme to realize:
a commercial vehicle auxiliary wet type brake device comprises a pneumatic brake device and a wet type brake device, wherein the pneumatic brake device provides braking;
the wet brake device comprises an upper brake shell, a piston, a plurality of dual steel sheets, a plurality of friction plates, a spline shaft and a lower brake shell;
the upper brake shell and the lower brake shell are axially and fixedly connected and form a closed space; the space in be provided with piston and integral key shaft, a plurality of friction disc and a plurality of dual steel sheet are crisscross coincide one to one, friction disc and integral key shaft spline fit connection, dual steel sheet is connected with lower brake shell.
Preferably, the dual steel sheet and the lower brake shell adopt an opening anti-rotation structure, a plurality of openings are uniformly formed in the lower brake shell in the circumferential direction, a plurality of protrusions are uniformly formed on the dual steel sheet, and the protrusions and the openings are connected in a matched mode.
Preferably, the pneumatic brake device comprises an air chamber, a push rod, a return spring and a bracket;
the brake device is characterized in that the air chamber is fixedly connected with the support in the axial direction, the support is fixedly connected with the upper brake shell in the axial direction, the return spring is connected with an air chamber ejector rod through a push rod, the push rod is sleeved with the return spring in an sleeved mode, and the push rod penetrates through the upper brake shell and is connected with the piston.
Preferably, the steering gear further comprises a steering device, wherein the steering device comprises a bearing, a driven cylindrical gear, a main shaft and a driving cylindrical gear;
the bottom end of the spline shaft penetrates through the lower brake shell to be connected with the driven cylindrical gear in a spline fit mode, the main shaft is arranged on one side of the lower brake shell and connected with the driving cylindrical gear in a spline fit mode, and the driving cylindrical gear is meshed with the driven cylindrical gear.
Preferably, the inside axial of integral key shaft is provided with the one-level oil duct, the integral key shaft is radially evenly provided with a plurality of second grade oil ducts, the second grade oil duct link up with the one-level oil duct, and is a plurality of the second grade oil duct is just to corresponding friction disc respectively, be provided with the oil outlet on the friction disc.
Preferably, the piston is provided with an oil passing hole.
Preferably, a circlip is arranged between the push rod and the piston.
Preferably, a bearing is arranged between the lower brake shell and the driven cylindrical gear, and the bearing is sleeved on the spline shaft.
Preferably, a piston sealing ring is arranged between the lower brake shell and the spline shaft.
Preferably, a first O-shaped sealing ring is arranged between the push rod and the upper brake shell; and an O-shaped sealing ring II is arranged between the upper brake shell and the lower brake shell.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses an inside oil duct that adopts of integral key shaft carries out the lubrication of dual steel sheet and friction disc, the integral key shaft oilhole is just to dual steel sheet respectively, is provided with the oil outlet on the friction disc, guarantees that all friction discs lubricate well;
the utility model adopts air pressure drive, and is distinguished from an engine brake, an eddy current retarder and a hydraulic retarder; the friction plate is connected with the spline shaft through a spline and rotates, the dual steel sheet is matched with a notch of the lower brake shell for stopping rotation, and the friction plate and the dual steel sheet are extruded by the air chamber through the push disc to generate braking force; the device can obviously improve the continuous braking capability of the commercial vehicle on a long downhill section, and is particularly suitable for auxiliary braking on a long downhill.
Drawings
The utility model is further described with the following drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the lubrication structure of the present invention;
fig. 3 is a schematic structural view of the brake housing of the present invention;
FIG. 4 is a schematic structural view of the dual steel sheet of the present invention;
FIG. 5 is a schematic view of the piston oil passing hole structure of the present invention;
fig. 6 is the structural schematic diagram of the friction plate oil hole of the present invention.
Description of the reference numerals
1. An air chamber; 2. a push rod; 3. a return spring; 4. a support; 5. the O-shaped seal rings I and 6 and the elastic check ring; 7. an upper brake housing; 8. an O-shaped sealing ring II; 9. a piston; 10. dual steel sheets; 11. a friction plate; 12. a spline shaft; 13. a lower brake housing; 14. a piston seal ring; 15. a bearing; 16. a driven cylindrical gear; 17. a main shaft; 18. a driving cylindrical gear.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1-6: an auxiliary wet type braking device for a commercial vehicle comprises an air chamber 1, a push rod 2, a return spring 3, a support 4, a first O-shaped sealing ring 5, an elastic check ring 6, an upper brake shell 7, a second O-shaped sealing ring 8, a piston 9, a dual steel sheet 10, a friction plate 11, a spline shaft 12, a lower brake shell 13, a piston sealing ring 14, a bearing 15, a driven cylindrical gear 16, a main shaft 17 and a driving cylindrical gear 18;
in the embodiment, as shown in fig. 1, the wet brake device includes an upper brake housing 7, a piston 9, a plurality of dual steel sheets 10, a plurality of friction plates 11, a spline shaft 12, and a lower brake housing 13; the upper brake shell 7 and the lower brake shell 13 are axially and fixedly connected to form a closed space, a piston 9 and a spline shaft 12 are arranged in the space, a plurality of friction plates 11 and a plurality of dual steel sheets 10 are staggered and superposed one by one, the friction plates 11 are in spline fit connection with the spline shaft 12, and the dual steel sheets 10 are connected with the lower brake shell 13;
in this embodiment, as shown in fig. 1, the pneumatic brake device includes an air chamber 1, a push rod 2, a return spring 3, and a bracket 4; the air chamber 1 and the support 4 are fastened through a bolt and nut structure, the return spring 3 is connected with an ejector rod of the air chamber 1 through a push rod 2, when auxiliary braking is needed, the air chamber 1 is ventilated, the ejector rod of the air chamber 1 pushes the push rod 2 to move axially, the push rod 2 enables the return spring 3 to compress, the push rod 2 enables a piston 9 to move axially, the piston 9 pushes the dual steel sheet 10 and the friction sheet 11 to move axially until the matching surface of the lower brake shell 13 is pressed, and the braking process is completed; when the brake needs to be released, the air chamber 1 is deflated, the force of the return spring 3 is released and moves towards the direction of the air chamber 1, and the piston 9 simultaneously moves towards the direction of the air chamber 1, so that the brake is released;
in this embodiment, as shown in fig. 3 and 4, the dual steel sheet 10 and the lower brake shell 13 adopt a notch rotation prevention structure, three notches are uniformly arranged in the lower brake shell 13 in the circumferential direction, three protrusions are uniformly arranged on the dual steel sheet 10, and the protrusions and the notches are connected in a matching manner;
in this embodiment, as shown in fig. 1, the steering device includes a bearing 15, a driven cylindrical gear 16, a main shaft 17, and a driving cylindrical gear 18; the main shaft 17 is connected with the driving cylindrical gear 18 through a spline, the driven cylindrical gear 16 is in spline fit with the spline shaft 12, and the driving cylindrical gear 18 is meshed with the driven cylindrical gear 16, so that torque is transmitted;
in this embodiment, as shown in fig. 2 and 6, the spline shaft 12 is supported by the bearing 15, a first-stage oil passage is axially arranged inside the spline shaft 12, a plurality of second-stage oil passages are uniformly arranged in the radial direction of the spline shaft 12, the second-stage oil passages are communicated with the first-stage oil passages, the plurality of second-stage oil passages respectively face the corresponding friction plates 11, oil outlets are arranged on the friction plates 11, and the oil outlets on the friction plates 11 improve lubrication; lubricating the even steel sheet 10 and the friction sheet 11 by adopting an oil channel inside the spline shaft 12; the oil holes of the spline shaft 12 are respectively opposite to the dual steel sheets 10, so that good lubrication of all friction sheets is ensured; lubricating oil enters from an oil inlet of a lower brake shell 13 according to an arrow shown in FIG. 2, sequentially enters a spline shaft 12 and a contact surface of a friction plate 11 and a dual steel sheet 10 to realize the lubrication of the contact surface, and finally flows out from an oil outlet;
in this embodiment, as shown in fig. 1, the push rod 2 and the piston 9 are axially limited by the elastic collar 6 for a shaft;
in this embodiment, as shown in fig. 5, an oil hole is added to the piston 9 to prevent the piston 9 and the upper brake housing 7 from forming a negative pressure when the piston is pushed out to cause braking resistance;
in the present embodiment, as shown in fig. 1, a piston sealing ring 14 is provided between the lower brake housing 13 and the spline shaft 12 for sealing;
in the embodiment, as shown in fig. 1, a first O-ring 5 is arranged between the push rod 2 and the upper brake shell 7; an O-shaped sealing ring II 8,O type sealing ring I5 and an O-shaped sealing ring II 8 are arranged between the upper brake shell 7 and the lower brake shell 13 for sealing.
The working principle is as follows: the main shaft 17 drives the driving cylindrical gear 18 to rotate through a spline, the driving cylindrical gear 18 drives the driven cylindrical gear 16 to rotate, and the driven cylindrical gear 16 drives the friction plate 11 to rotate through the spline shaft 12;
when auxiliary braking is needed, the air chamber 1 is ventilated, an ejector rod of the air chamber 1 pushes a push rod 2 to move axially, the push rod 2 enables a return spring 3 to be compressed, the push rod 2 enables a piston 9 to move axially, the piston 9 pushes a dual steel sheet 10 and a friction plate 11 to move axially until a matching surface of a lower brake shell 13 is pressed, the dual steel sheet 10 and the lower brake shell 13 are matched through a gap to stop rotation, and the braking process is finished;
when the brake needs to be released, the air chamber 1 is deflated, the force of the return spring 3 is released, the piston moves towards the air chamber 1, the piston 9 simultaneously moves towards the air chamber 1, and the brake is released.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The auxiliary wet brake device for the commercial vehicle is characterized by comprising an air pressure brake device and a wet brake device, wherein the air pressure brake device is used for providing braking;
the wet brake device comprises an upper brake shell (7), a piston (9), a plurality of dual steel sheets (10), a plurality of friction plates (11), a spline shaft (12) and a lower brake shell (13);
the upper brake shell (7) and the lower brake shell (13) are axially and fixedly connected and form a closed space; the space in be provided with piston (9) and integral key shaft (12), a plurality of friction disc (11) and a plurality of dual steel sheet (10) crisscross coincide one to one, friction disc (11) and integral key shaft (12) spline fit are connected, dual steel sheet (10) are connected with lower brake shell (13).
2. The auxiliary wet braking device for the commercial vehicle according to claim 1, wherein the dual steel sheet (10) and the lower brake shell (13) adopt a notch rotation prevention structure, a plurality of notches are uniformly arranged in the lower brake shell (13) in the circumferential direction, a plurality of protrusions are uniformly arranged on the dual steel sheet (10), and the protrusions and the notches are connected in a matching manner.
3. A commercial vehicle auxiliary wet brake device according to claim 1, characterized in that the pneumatic brake device comprises an air chamber (1), a push rod (2), a return spring (3), a bracket (4);
the brake device is characterized in that the air chamber (1) is fixedly connected with the support (4) in the axial direction, the support (4) is fixedly connected with the upper brake shell (7) in the axial direction, the return spring (3) is connected with an ejector rod of the air chamber (1) through the push rod (2), the return spring (3) is sleeved outside the push rod (2), and the push rod (2) penetrates through the upper brake shell (7) and is connected with the piston (9).
4. Auxiliary wet brake device for commercial vehicles according to claim 1, characterized in that it further comprises a steering device comprising a bearing (15), a driven cylindrical gear (16), a main shaft (17), a driving cylindrical gear (18);
spline shaft (12) bottom runs through stopper shell (13) and driven cylindrical gear (16) spline fit connection down, main shaft (17) set up stopper shell (13) one side down, main shaft (17) and initiative cylindrical gear (18) spline fit connection, initiative cylindrical gear (18) and driven cylindrical gear (16) meshing.
5. The auxiliary wet brake device for the commercial vehicle as claimed in claim 1, wherein a primary oil passage is axially arranged inside the spline shaft (12), a plurality of secondary oil passages are uniformly arranged in the spline shaft (12) in the radial direction, the secondary oil passages are communicated with the primary oil passage, the plurality of secondary oil passages are respectively opposite to the corresponding friction plates (11), and oil outlets are arranged on the friction plates (11).
6. Auxiliary wet brake device for commercial vehicles according to claim 1, characterized in that the piston (9) is provided with oil through holes.
7. A commercial vehicle auxiliary wet brake device according to claim 3, characterized in that a resilient collar (6) is arranged between the push rod (2) and the piston (9).
8. The auxiliary wet brake device for commercial vehicles according to claim 4, characterized in that a bearing (15) is arranged between the lower brake housing (13) and the driven cylindrical gear (16), and the bearing (15) is sleeved on the spline shaft (12).
9. Auxiliary wet brake device for commercial vehicles according to claim 1, characterized in that a piston sealing ring (14) is arranged between the lower brake housing (13) and the spline shaft (12).
10. Auxiliary wet brake device for commercial vehicles according to claim 3, characterized in that a first O-ring (5) is arranged between the push rod (2) and the upper brake housing (7); and a second O-shaped sealing ring (8) is arranged between the upper brake shell (7) and the lower brake shell (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161177.2U CN218207549U (en) | 2022-08-17 | 2022-08-17 | Auxiliary wet type braking device for commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161177.2U CN218207549U (en) | 2022-08-17 | 2022-08-17 | Auxiliary wet type braking device for commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218207549U true CN218207549U (en) | 2023-01-03 |
Family
ID=84655149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222161177.2U Active CN218207549U (en) | 2022-08-17 | 2022-08-17 | Auxiliary wet type braking device for commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218207549U (en) |
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2022
- 2022-08-17 CN CN202222161177.2U patent/CN218207549U/en active Active
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