CN114810877B - Wet brake and wet brake drive axle using same - Google Patents
Wet brake and wet brake drive axle using same Download PDFInfo
- Publication number
- CN114810877B CN114810877B CN202210320369.5A CN202210320369A CN114810877B CN 114810877 B CN114810877 B CN 114810877B CN 202210320369 A CN202210320369 A CN 202210320369A CN 114810877 B CN114810877 B CN 114810877B
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- Prior art keywords
- brake piston
- brake
- shell
- parking brake
- parking
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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
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
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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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/345—Parking lock mechanisms or brakes in the transmission using friction brakes, e.g. a band brakes
-
- 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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
-
- 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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
- F16D2121/06—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure for releasing a normally applied brake
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention discloses a wet brake.A parking brake piston with one end extending outwards and attached to the inner wall of a shell is inserted in a fixed plate, and a parking brake piston oil inlet for pushing the parking brake piston to move to release parking brake after pressure oil enters is formed in the shell; the side wall of one end of the fixed plate, which is far away from the parking brake piston, is attached with a service brake piston, the axial outer side wall of which is attached to the inner wall of the shell, the shell is provided with a service brake piston oil inlet for pushing the service brake piston to move for service brake after pressure oil enters, and the service brake piston is provided with a spring return device, so that the service brake piston can be quickly returned after the service brake is released, brake dragging is avoided, and the heating value of braking is reduced; except the shell, the rest parts are rotation axisymmetric parts, so that the processing is simple, the processing precision is easy to ensure, and meanwhile, the rotational inertia in the working engineering is reduced.
Description
Technical Field
The present application relates to the field of brake technology, and in particular, to a wet brake and a wet brake drive axle using the same.
Background
The forklift drive axle adopts drum brakes, the drum brakes have simple structure and lower cost, but brake shoe friction plates are easy to crack and ablate, mud, water, oil and the like are difficult to remove when the brakes are stuck, the braking stability is affected, and the defects of small braking area, unstable braking force, poor heat dissipation and the like exist. The full-closed wet brake can prevent the invasion of other substances such as soil, has stable braking performance, adopts a single brake piston propulsion structure, ensures uniform stress of friction coupling parts, does not need to adjust a gap and allows slip to transfer torque, adopts an oil cooling and multi-disc structure, has good braking performance and prolongs the service life of the brake. The driving and parking integrated wet brake driving axle has the advantages that the driving axle is more compact in structure, the whole vehicle is miniaturized, the basis is laid for compact design, but an existing driving and parking integrated wet brake driving axle is free of a return device of a driving brake piston, so that the driving axle is braked and towed, the resistance of the system is increased, the transmission efficiency is reduced, and the application and popularization of driving and parking integrated wet brake driving are affected.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present application is to provide a wet brake and a wet brake drive axle using the same, which solve the above-mentioned problems of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the wet brake comprises a brake assembly, wherein the brake assembly comprises a shell, a fixing plate with a hole in the middle is fixedly connected to the inner wall of the shell, a parking brake piston with one end extending outwards and attached to the inner wall of the shell is inserted into the fixing plate, and a parking brake piston oil inlet for pushing the parking brake piston to move to release parking brake after pressure oil enters the shell is formed in the shell;
the parking brake piston is characterized in that a service brake piston with an axial outer side wall attached to the inner wall of the shell is attached to the side wall of one end, far away from the parking brake piston, of the fixing plate, a service brake piston oil inlet for pushing the service brake piston to move for service brake after pressure oil enters is formed in the shell, and a friction brake assembly spliced in the shell is arranged at one end, far away from the parking brake piston, of the service brake piston.
Further, a parking return assembly which returns automatically after pressure oil is relieved is arranged on the parking brake piston.
Further, the parking return assembly comprises a plurality of parking brake return springs which are distributed in an annular mode, a second mounting hole for placing the parking brake return springs is formed in one end, extending outwards, of the parking brake piston, and a first mounting hole matched with the second mounting hole is formed in the inner wall, attached to one end of the parking brake piston, of the shell.
Further, a driving return assembly which automatically returns when pressure oil is released is arranged on the driving brake piston.
Further, the driving return assembly comprises a plurality of third mounting holes which are formed in the side wall of the driving brake piston in an annular mode, the driving brake piston movably penetrates through the third mounting holes through screws and then is screwed into the side wall of the fixing plate, and a section of the screws located in the third mounting holes is surrounded by a driving brake return spring which automatically resets after pressure oil is relieved.
Further, the friction braking component is formed by alternately installing a plurality of separation plates and friction plates.
Further, the service brake piston and the parking brake piston are of stepped structures, a first star-shaped sealing ring is embedded on the outer side wall of the thick section of the parking brake piston, a second star-shaped sealing ring is embedded on the outer side wall of the thin section of the parking brake piston, a fourth star-shaped sealing ring is embedded on the outer side wall of the thick section of the service brake piston, a third star-shaped sealing ring is embedded on the outer side wall of the thin section of the service brake piston, and an O-shaped sealing ring is embedded on the side wall of the fixing plate far away from one end of the service brake piston.
Further, coaxial through holes are formed in the middle of the service brake piston and the parking brake piston, and through holes are formed in the side walls of the service brake piston. So as to lighten the weight of the service brake piston and lighten the unilateral abrasion of the sealing element caused by the heavy weight of the service brake piston.
A wet brake drive axle comprising an axle housing having brake assemblies as described above mounted at both ends thereof.
Further, the other end of the shell on the brake assembly is fixedly provided with a shaft head, a hub is arranged on the shaft head through a bearing rotating sleeve, a main speed reducer assembly is arranged in the axle housing, output shafts at two ends of the main speed reducer assembly are provided with second half shafts, the other ends of the second half shafts penetrate through the axle housing and enter the brake assembly, one ends of the second half shafts, which are positioned in the brake assembly, penetrate through a parking brake piston and a service brake piston and then are coaxially connected with a sun gear through a spline housing, a planet carrier positioned in the shaft head is arranged on the sun gear, the other ends of the planet carrier are connected with a first half shaft, the other ends of the first half shafts penetrate through the shaft head and are fixedly connected with the hub, a planetary gear ring on the planet carrier is attached to one side wall of one end, far away from the service brake piston, of the friction brake assembly, and the friction brake assembly is sleeved on the spline housing.
Compared with the prior art, the invention has the beneficial effects that:
1. the spring return device is added to the service brake piston, so that the service brake piston can be returned quickly after the service brake is released, the brake drag is avoided, and the heating value of the brake is reduced;
2. the acting force of the parking brake piston return spring only acts on the parking brake piston and the shell, so that the stress condition of the fixing plate is simplified;
3. except the shell, the rest parts are rotation axisymmetric parts, so that the processing is simple, the processing precision is easy to ensure, and meanwhile, the rotational inertia in the working engineering is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a brake assembly according to the present invention;
FIG. 2 is a schematic diagram of the assembled structure of the drive axle of the present invention;
FIG. 3 is a schematic perspective view of a friction plate according to the present invention;
FIG. 4 is a schematic perspective view of a spacer according to the present invention;
FIG. 5 is a schematic perspective view of a spline housing according to the present invention;
fig. 6 is a schematic perspective view of the housing of the present invention.
Reference numerals illustrate: axle housing 1, brake assembly 2, housing 201, first star seal 202, second star seal 203, third star seal 204, fourth star seal 205, service brake piston 206, spacer 207, friction plate 208, screw 209, service brake return spring 210, fixed plate 211, O-ring 212, parking brake piston 213, parking brake return spring 214, first mounting hole 2011, parking brake piston oil inlet 2012, service brake piston oil inlet 2013, second mounting hole 2021, third mounting hole 2061, through hole 2071, spline housing 3, sun gear 4, planet carrier 5, first half shaft 6, hub 7, second half shaft 8, final drive assembly 9, spindle head 10, and planet ring 11.
Detailed Description
Other advantages and effects of the present application will be readily apparent to those skilled in the art from the present disclosure, by describing embodiments of the present application with specific examples. This application is also intended to cover any adaptations or uses of various embodiments and can be practiced in different but specific details of the subject matter within the scope of the description and from various points of view. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
Referring to fig. 1-6, the present invention provides a technical solution:
the utility model provides a wet braking transaxle, as shown in fig. 2, including axle housing 1, stopper assembly 2 and spindle nose 10, the quantity of stopper assembly 2 and spindle nose 10 is two, the outer wall of stopper assembly 2 passes through bolt and axle housing 1 fixed connection, install main reducer assembly 9 in the axle housing 1, spindle nose 10 passes through bolt and the outer wall fixed connection of stopper assembly 2, be equipped with wheel hub 7 through the bearing rotation cover on the spindle nose 10, be equipped with one end in the spindle nose 10 and extend to the outer first half axle 6 with wheel hub 7 fixed connection of spindle nose 10, the other end of first half axle 6 is equipped with coaxial pivoted planet carrier 5 in proper order, sun gear 4 and second half axle 8, second half axle 8 passes the output shaft of stopper assembly 2 and main reducer assembly 9, sun gear 4 and second half axle 8 pass through spline housing 3 and realize coaxial coupling.
The drive axle works, power is transmitted to the main speed reducer assembly 9 by the prime motor, then is transmitted to the second half shaft 8 by the main speed reducer assembly 9, then is transmitted to the spline housing 3 by the second half shaft 8, then is transmitted to the sun wheel 4 by the spline housing 3, is transmitted to the planet carrier 5 by the sun wheel 4, the power output by the planet carrier 5 is further transmitted to the hub 7 through the first half shaft 6, and finally is transmitted to the wheels by the hub 7, so that final output is realized.
Referring to fig. 1, the brake assembly 2 includes a housing 201, a fixing plate 211 with a hole in the middle is fixedly connected to the inner wall of the housing 201, a parking brake piston 213 with one end extending outwards and attached to the inner wall of the housing 201 is inserted into the fixing plate 211, a parking brake piston oil inlet 2012 is formed in the housing 201, which pushes the parking brake piston 213 to move to release the parking brake after pressure oil enters, the parking brake piston 213 is abutted to a driving brake piston 206 after being returned, a parking return assembly is mounted on the parking brake piston 213, which automatically returns after pressure oil is released, the parking return assembly includes a plurality of parking brake return springs 214 distributed in a ring shape, a second mounting hole 2021 for placing the parking brake return springs 214 is formed in one end extending outwards of the parking brake piston 213, and a first mounting hole 2011 matched with the second mounting hole 2021 is formed in the inner wall of the housing 201 attached to one end of the parking brake piston 213.
The side wall of one end of the fixing plate 211 far away from the parking brake piston 213 is attached with a service brake piston 206 with an axial outer side wall attached to the inner wall of the shell 201, a service brake piston oil inlet 2013 for pushing the service brake piston 206 to move for service brake after pressure oil enters is formed in the shell 201, a service brake return assembly for automatically returning after pressure oil is released is mounted on the service brake piston 206, the service brake return assembly comprises a plurality of third mounting holes 2061 formed in the side wall of the service brake piston 206 in an annular mode, the service brake piston 206 is screwed into the side wall of the fixing plate 211 after penetrating through the third mounting holes 2061 through screws 209, a section of the screws 209 located in the third mounting holes 2061 is surrounded by a service brake return spring 210 automatically returning after pressure oil is released, and particularly, the screws 209 are stepped, so that a certain guiding effect is also achieved on axial movement of the service brake piston 206 while installation limiting of the service brake return spring 210 is achieved. The end of the service brake piston 206, which is far away from the parking brake piston 213, is provided with a friction brake component sleeved on the spline housing 3, the side wall of the end of the friction brake component, which is far away from the service brake piston 206, is attached to the planetary gear ring 11 on the planet carrier 5,
the friction braking assembly is formed by alternately installing a plurality of separation plates 207 and friction plates 208, specifically, the structure of the friction plates 208 is shown in fig. 3, the inner ring of the friction plates 208 is provided with an inner spline, the structure of a spline sleeve 3 is shown in fig. 5, the outer ring of the friction plates is provided with an outer spline matched with the inner spline of the friction plates 208, the friction plates 208 are sleeved on the spline sleeve 3, the structure of the separation plates 207 is shown in fig. 4, the friction plates 207 are installed in grooves formed in the inner wall of a shell 201, the grooves of the shell 201 are shown in fig. 6, and when a running vehicle is braked, a running brake piston 206 pushes the friction plates 208 and the separation plates 207 to move, the friction plates 208 rotate together with the spline sleeve 3 and can axially move along the outer spline of the spline sleeve 3, and the separation plates 207 are installed with the shell 201 in a circumferential fixed mode but can axially move in the corresponding grooves of the shell 201. The spacer 207 is designed with a set of thicknesses that are measured and calculated to select different thicknesses to adjust the uniformity of the initial service brake piston 206 travel.
In addition, the service brake piston 206 and the parking brake piston 213 are both in a ladder-type structure, so that the pressure oil can be pushed to displace after entering, the first star-shaped sealing ring 202 is embedded on the outer side wall of the thick section of the parking brake piston 213, the second star-shaped sealing ring 203 is embedded on the outer side wall of the thin section of the parking brake piston 213, the fourth star-shaped sealing ring 205 is embedded on the outer side wall of the thick section of the service brake piston 206, the third star-shaped sealing ring 204 is embedded on the outer side wall of the thin section of the parking brake piston, and the O-shaped sealing ring 212 is embedded on the side wall of the fixing plate 211, which is far away from one end of the service brake piston 206.
As a preferred example of this embodiment, the central portions of the service brake piston 206 and the parking brake piston 213 are provided with coaxial through holes for the second half shaft 8 to pass through, and the side wall of the service brake piston 206 is provided with through holes 2071, so as to reduce the weight of the service brake piston 206 and reduce the unilateral wear of the sealing element caused by the heavy weight of the service brake piston 206.
When the wet service brake works and the vehicle runs normally, the parking brake is released, the pressure oil enters a sealing cavity formed by the shell 201, the parking brake piston 213, the fixing plate 211, the first star-shaped sealing ring 202, the second star-shaped sealing ring 203 and the O-shaped sealing ring 212 through the stop brake piston oil inlet 2012, after the sealing cavity is filled with oil, the parking brake piston 213 is pushed to move towards the axle housing 1 until the end face of the parking brake piston 213 contacts with the end face of the shell 201, and the parking brake return spring 214 compressed in a hole of the parking brake piston 213 is further compressed. After the parking brake is released, the power output by the prime motor can be transmitted to the wheels through the transmission pieces to drive the vehicle to walk. When the service braking is needed in the running process, pressure oil enters a sealing cavity formed by the shell 201, the service braking piston 206, the third star-shaped sealing ring 204 and the fourth star-shaped sealing ring 205 through the service braking piston oil inlet 2013, after the sealing cavity is filled with oil, a plurality of groups of spacers 207 and friction plates 208 which are alternately arranged are pushed to axially move, and finally the friction plates are pressed against the planetary gear ring 11 fixed on the shaft head 10 to generate braking force, so that the vehicle is decelerated or stopped. When the braking of the single-row vehicle is released, the pressure oil in the service brake piston oil inlet 2013 is released, the plurality of groups of service brake return springs 210 precompressed in the mounting holes 2061 on the end surface of the service brake piston 206 are quickly returned under the action of the elastic force, and the friction plate 208 and the spacer 207 are naturally separated under the action of the centrifugal force, so that the friction plate abrasion caused by the braking and dragging phenomenon is avoided. When the vehicle is stopped and stable, the vehicle is required to be stopped, the brake piston oil inlet 2012 is stopped to lose pressure through the operation of the on-off button of the whole vehicle control oil way, the parking brake piston 213 moves to the side far away from the axle housing 1 under the action of the elastic force of a plurality of groups of parking brake return springs 214, the service brake piston 206 is further pushed to move, a plurality of groups of spacers 207 and friction plates 208 which are alternately arranged are compressed, and finally the planetary gear ring 11 fixed on the axle head 10 is pressed to generate braking force. When the vehicle suddenly extinguishes, the system automatically loses pressure, and the parking brake can also act, so that the safety of the vehicle is ensured.
The above-described embodiments are merely illustrative of the principles of the present application and their effectiveness, and are not intended to limit the present application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications and variations which a person having ordinary skill in the art would accomplish without departing from the spirit and technical spirit disclosed in the present patent application shall be covered by the claims of the present patent application.
Claims (6)
1. A wet brake, characterized by: the brake assembly (2) comprises a shell (201), a fixing plate (211) with a hole in the middle is fixedly connected to the inner wall of the shell (201), a parking brake piston (213) with one end extending outwards and attached to the inner wall of the shell (201) is inserted into the fixing plate (211), and a brake piston oil inlet (2012) for pushing the parking brake piston (213) to move to release parking brake after pressure oil enters is formed in the shell (201);
the side wall of one end of the fixed plate (211) far away from the parking brake piston (213) is attached with a service brake piston (206) with an axial outer side wall attached to the inner wall of the shell (201), the shell (201) is provided with a service brake piston oil inlet (2013) for pushing the service brake piston (206) to move for service brake after pressure oil enters, and one end of the service brake piston (206) far away from the parking brake piston (213) is provided with a friction brake assembly inserted in the shell (201);
the parking brake piston (213) is provided with a parking return assembly which automatically returns when pressure oil is released, the parking return assembly comprises a plurality of parking brake return springs (214) which are distributed in a ring shape, one end of the parking brake piston (213) which extends outwards is provided with a second mounting hole (2021) for placing the parking brake return springs (214), and the inner wall of the shell (201) attached to one end of the parking brake piston (213) is provided with a first mounting hole (2011) matched with the second mounting hole (2021);
the driving brake piston (206) is provided with a driving return assembly which automatically returns when pressure oil is released, the driving return assembly comprises a plurality of third mounting holes (2061) which are formed in the side wall of the driving brake piston (206) in an annular mode, the driving brake piston (206) movably passes through the third mounting holes (2061) through screws (209) and then is screwed into the side wall of the fixing plate (211), and a section of the screws (209) located in the third mounting holes (2061) is surrounded by a driving brake return spring (210) which automatically returns when the pressure oil is released.
2. A wet brake as defined in claim 1, wherein: the friction braking component is formed by alternately installing a plurality of separation plates (207) and friction plates (208).
3. A wet brake as defined in claim 1, wherein: service brake piston (206) and parking brake piston (213) are ladder type structure, inlay on the thick section lateral wall of parking brake piston (213) have first star type sealing washer (202), inlay on the thin section lateral wall have second star type sealing washer (203), inlay on the thick section lateral wall of service brake piston (206) have fourth star type sealing washer (205), inlay on the thin section lateral wall have third star type sealing washer (204), and the lateral wall that service brake piston (206) one end was kept away from to fixed plate (211) is inlayed and is had O type sealing washer (212).
4. A wet brake according to claim 3, wherein: coaxial through holes are formed in the middle of the service brake piston (206) and the parking brake piston (213), and through holes (2071) are formed in the side wall of the service brake piston (206).
5. A wet brake drive axle comprising an axle housing (1), characterized in that: the axle housing (1) is fitted at both ends with a brake assembly (2) as claimed in any one of claims 1 to 4.
6. A wet brake drive axle as defined in claim 5, wherein: the novel brake is characterized in that a shaft head (10) is fixedly arranged at the other end of a shell (201) on the brake assembly (2), a hub (7) is arranged on the shaft head (10) through a bearing rotating sleeve, a main speed reducer assembly (9) is arranged in a bridge casing (1), a second half shaft (8) is arranged on output shafts at two ends of the main speed reducer assembly (9), the other end of the second half shaft (8) penetrates through the bridge casing (1) to enter the brake assembly (2), one end of the second half shaft (8) positioned in the brake assembly (2) penetrates through a parking brake piston (213) and a service brake piston (206) and then is coaxially connected with a sun gear (4) through a spline sleeve (3), a planet carrier (5) positioned in the shaft head (10) is arranged on the sun gear (4), the other end of the planet carrier (5) is connected with a first half shaft (6), the other end of the first half shaft (6) penetrates through the shaft head (10) and is fixedly connected with the hub (7), and a gear ring (11) on the planet carrier (5) is attached to one end side wall of the friction brake assembly far away from the service brake piston (206), and the friction assembly is sleeved on the spline sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210320369.5A CN114810877B (en) | 2022-03-29 | 2022-03-29 | Wet brake and wet brake drive axle using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210320369.5A CN114810877B (en) | 2022-03-29 | 2022-03-29 | Wet brake and wet brake drive axle using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114810877A CN114810877A (en) | 2022-07-29 |
| CN114810877B true CN114810877B (en) | 2023-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210320369.5A Active CN114810877B (en) | 2022-03-29 | 2022-03-29 | Wet brake and wet brake drive axle using same |
Country Status (1)
| Country | Link |
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| CN (1) | CN114810877B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU0001056D0 (en) * | 2000-03-08 | 2000-05-28 | Spring force storing parking brake released with hidraulic or mechanical method combined with wet brake structure | |
| JP2003343622A (en) * | 2002-05-29 | 2003-12-03 | Mitsubishi Heavy Ind Ltd | Wet multiple disk brake device for vehicle |
| JP2007120559A (en) * | 2005-10-26 | 2007-05-17 | Mitsubishi Heavy Ind Ltd | Wet brake for vehicle, and reduction gear and drive mechanism using the same |
| CN201129385Y (en) * | 2007-12-14 | 2008-10-08 | 安徽合力股份有限公司 | Multifunctional wet-type brake for 3t forklifts drive bridge |
| CN101571171A (en) * | 2009-06-05 | 2009-11-04 | 安徽合力股份有限公司 | Multifunctional wet brake for forkman driving bridge |
| CN203335686U (en) * | 2013-07-10 | 2013-12-11 | 常州南车铁马科技实业有限公司 | Wet multiple-disc brake for heavy truck |
| CN107265354A (en) * | 2017-06-26 | 2017-10-20 | 安徽合力股份有限公司 | A kind of fork truck driving integrated wet-type braking driving axle of parking |
| CN207313042U (en) * | 2017-06-26 | 2018-05-04 | 安徽合力股份有限公司 | A kind of fork truck driving parking integrates wet-type braking driving axle |
| KR102243281B1 (en) * | 2019-11-20 | 2021-04-22 | 주식회사 가리언 | common breaking device for travelling working vehicle |
| CN214945911U (en) * | 2021-05-24 | 2021-11-30 | 山东云宇机械集团有限公司 | Wet type braking device of traveling and parking integrated braking half shaft |
-
2022
- 2022-03-29 CN CN202210320369.5A patent/CN114810877B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU0001056D0 (en) * | 2000-03-08 | 2000-05-28 | Spring force storing parking brake released with hidraulic or mechanical method combined with wet brake structure | |
| JP2003343622A (en) * | 2002-05-29 | 2003-12-03 | Mitsubishi Heavy Ind Ltd | Wet multiple disk brake device for vehicle |
| JP2007120559A (en) * | 2005-10-26 | 2007-05-17 | Mitsubishi Heavy Ind Ltd | Wet brake for vehicle, and reduction gear and drive mechanism using the same |
| CN201129385Y (en) * | 2007-12-14 | 2008-10-08 | 安徽合力股份有限公司 | Multifunctional wet-type brake for 3t forklifts drive bridge |
| CN101571171A (en) * | 2009-06-05 | 2009-11-04 | 安徽合力股份有限公司 | Multifunctional wet brake for forkman driving bridge |
| CN203335686U (en) * | 2013-07-10 | 2013-12-11 | 常州南车铁马科技实业有限公司 | Wet multiple-disc brake for heavy truck |
| CN107265354A (en) * | 2017-06-26 | 2017-10-20 | 安徽合力股份有限公司 | A kind of fork truck driving integrated wet-type braking driving axle of parking |
| CN207313042U (en) * | 2017-06-26 | 2018-05-04 | 安徽合力股份有限公司 | A kind of fork truck driving parking integrates wet-type braking driving axle |
| KR102243281B1 (en) * | 2019-11-20 | 2021-04-22 | 주식회사 가리언 | common breaking device for travelling working vehicle |
| CN214945911U (en) * | 2021-05-24 | 2021-11-30 | 山东云宇机械集团有限公司 | Wet type braking device of traveling and parking integrated braking half shaft |
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| Publication number | Publication date |
|---|---|
| CN114810877A (en) | 2022-07-29 |
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