CN110645290B - Power takeoff with braking function - Google Patents
Power takeoff with braking function Download PDFInfo
- Publication number
- CN110645290B CN110645290B CN201911021664.5A CN201911021664A CN110645290B CN 110645290 B CN110645290 B CN 110645290B CN 201911021664 A CN201911021664 A CN 201911021664A CN 110645290 B CN110645290 B CN 110645290B
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- CN
- China
- Prior art keywords
- cylinder body
- outer piston
- piston
- medium
- axial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract description 7
- 238000000429 assembly Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
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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
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
- F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
- F16D65/0974—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis
- F16D65/0975—Springs made from wire
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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
- F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
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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
-
- 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
-
- 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
- F16D2125/04—Cylinders
-
- 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
- F16D2125/06—Pistons
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a power takeoff, in particular to a power takeoff with a braking function, and belongs to the technical field of power takeoff structures. The device comprises a shell, an output shaft, an outer piston, a cylinder body, a brake disc and an inner piston, wherein the output shaft is sequentially connected with the inner piston and the cylinder body, the inner piston is positioned in an inner cavity of the cylinder body, the brake disc is clamped between the cylinder body and an outer ring of the outer piston, the outer piston is sleeved on an extending end of the cylinder body, and the cylinder body is connected with an inner ring of the outer piston through a plurality of elastic compression assemblies. The invention has simple, compact and reasonable structure, high integration level, no need of secondary adjustment, and smooth realization of the disengaging action by the built-in braking structure without affecting other functions of the power takeoff, thereby improving the use effect of the power takeoff.
Description
Technical Field
The invention relates to a power takeoff, in particular to a power takeoff with a braking function, and belongs to the technical field of power takeoff structures.
Background
At present, the application of the domestic power takeoff is mainly based on a dump truck, and the power takeoff on the vehicle is usually provided with a hydraulic pump, so that the power takeoff mode is stable. Along with the diversification of engineering vehicles, the load forms of the rear connection of the power take-off are gradually increased, and when the rotational inertia of the rear connection load is large, the phenomenon of unsmooth disconnection of the power take-off can often occur in the use process.
In view of this situation, most refitting plants need to connect a brake disc to the output end of the power take-off after receiving the chassis, so that for these special applications, the conventional power take-off has a certain limitation.
Disclosure of Invention
The invention aims to overcome the defects, thereby providing the power takeoff with the braking function, which can smoothly realize the disengaging action through the built-in braking structure and improve the use effect of the power takeoff.
According to the technical scheme provided by the invention, the power takeoff with the braking function comprises a shell, an output shaft, an outer piston, a cylinder body, a braking disc and an inner piston, wherein the output shaft is rotationally connected in the shell through bearings at two ends, and the power takeoff is characterized in that: the output shaft is sequentially connected with an inner piston and a cylinder body, the inner piston is positioned in an inner cavity of the cylinder body, a brake disc is clamped between the cylinder body and an outer piston ring, an outer piston is sleeved on an extending end of the cylinder body, the cylinder body is connected with an inner ring of the outer piston through a plurality of elastic compression assemblies, and the elastic compression assemblies are uniformly distributed along the circumferential direction of the outer piston; the output shaft is provided with an axial medium channel along the axial direction, the output shaft is provided with a radial medium channel along the radial direction, and a first medium chamber for accommodating a medium is arranged between the inner piston and the bottom of the inner cavity of the cylinder body; one end of the axial medium channel is communicated with the outside, the other end of the axial medium channel is connected with one end of the radial medium channel, and the other end of the radial medium channel is connected with the first medium chamber; the cylinder body is provided with a plurality of cylinder body axial medium channels along the axial direction, a second medium chamber is arranged between the cylinder body and the outer piston, and two ends of the plurality of cylinder body axial medium channels are respectively communicated with the first medium chamber and the second medium chamber.
Further, one side of the shell is detachably connected with the end cover through the connecting piece.
Further, a clamp spring is arranged at the shaft extension end of the cylinder body, and the clamp spring is positioned at the rear end of the outer piston.
Further, a positioning ring groove is formed in the end face of the outer piston, facing the brake disc, along the circumferential direction, and the brake disc is positioned and sleeved in the positioning ring groove.
Further, the elastic compression assembly comprises a spring and a screw, the screw penetrates through the outer piston and is connected with the cylinder body through threads, the spring is sleeved on the screw, and the front end and the rear end of the spring are respectively contacted with the inner end face of the outer piston and the rear end face of the screw.
Further, the plurality of cylinder axial medium channels are uniformly distributed along the circumferential direction of the cylinder.
Compared with the prior art, the invention has the following advantages:
The invention has simple, compact and reasonable structure, high integration level, no need of secondary adjustment, and smooth realization of the disengaging action by the built-in braking structure without affecting other functions of the power takeoff, thereby improving the use effect of the power takeoff.
Drawings
FIG. 1 is a semi-sectional view of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Reference numerals illustrate: 1-shell, 2-end cover, 3-output shaft, 4-outer piston, 5-cylinder body, 6-brake disc, 7-axial medium channel, 8-radial medium channel, 9-cylinder body axial medium channel, 10-positioning ring groove, 11-spring, 12-screw, 13-inner piston, 14-jump ring, 15-cylinder body shaft extension.
Detailed Description
The invention will be further described with reference to examples of embodiments in the accompanying drawings, in which:
as shown in fig. 1-2, the invention mainly comprises a shell 1, an output shaft 3, an outer piston 4, a cylinder 5, a brake disc 6 and an inner piston 13.
The output shaft 3 is rotatably connected in the housing 1 through bearings at two ends, and one side of the housing 1 is detachably connected with the end cover 2 through a connecting piece.
The output shaft 3 is sequentially connected with the inner piston 13 and the cylinder body 5, the inner piston 13 is positioned in the inner cavity of the cylinder body 5, the brake disc 6 is clamped between the outer rings of the cylinder body 5 and the outer piston 4, the outer piston 4 is sleeved on the cylinder body shaft extension end 15 of the cylinder body 5, in order to prevent the outer piston 4 from falling out of the cylinder body shaft extension end 15 of the cylinder body 5, the cylinder body shaft extension end 15 of the cylinder body 5 is provided with a clamp spring 14, and the clamp spring 14 is positioned at the rear end of the outer piston 4.
The cylinder body 5 is connected with the inner ring of the outer piston 4 through a plurality of elastic compression assemblies, and the plurality of elastic compression assemblies are uniformly distributed along the circumferential direction of the outer piston 4.
In order to avoid radial deflection of the brake disc 6, the end surface of the outer piston 4 facing the brake disc 6 is provided with a positioning ring groove 10 along the circumferential direction, and the brake disc 6 is positioned and sleeved in the positioning ring groove 10.
The elastic compression assembly comprises a spring 11 and a screw 12, the screw 12 penetrates through the outer piston 4 and is connected with the cylinder body 5 through threads, the screw 12 is sleeved with the spring 11, and the front end and the rear end of the spring 11 are respectively contacted with the inner end face of the outer piston 4 and the rear end face of the screw 12.
The output shaft 3 is provided with an axial medium channel 7 along the axial direction, the output shaft 3 is provided with a radial medium channel 8 along the radial direction, and a first medium chamber for accommodating a medium is arranged between the inner piston 13 and the bottom of the inner cavity of the cylinder body 5. One end of the axial medium channel 7 is communicated with the outside, the other end of the axial medium channel 7 is connected with one end of the radial medium channel 8, and the other end of the radial medium channel 8 is connected with the first medium chamber.
The cylinder body 5 is axially provided with a plurality of cylinder body axial medium channels 9, and the plurality of cylinder body axial medium channels 9 are uniformly distributed along the circumferential direction of the cylinder body 5. A second medium chamber is arranged between the cylinder body 5 and the outer piston 4, and two ends of the axial medium channels 9 of the plurality of cylinders are respectively communicated with the first medium chamber and the second medium chamber.
The media mentioned in the present invention may be compressed air or pressure oil.
The working principle of the invention is as follows: when the power takeoff works, compressed air or pressure oil enters a first medium chamber between the cylinder body and the inner piston through an axial medium channel and a radial medium channel in the output shaft, a part of air or oil enters a second medium chamber between the outer piston and the cylinder body through the axial medium channel of the cylinder body, the outer piston is subjected to thrust to axially move until the outer piston is propped against the clamp spring, and at the moment, the brake disc is in a floating state and does not play a braking role. When the power takeoff is required to stop working, the air source or the pressure oil is cut off, and the spring pushes the outer piston back to the initial position due to the fact that the relative positions of the screw and the cylinder body are fixed. The brake disc is clamped again by the inner piston and the cylinder body, so that friction moment for preventing rotation is generated, and further braking is realized.
Claims (6)
1. The utility model provides a take power takeoff of braking function, includes shell (1), output shaft (3), outer piston (4), cylinder body (5), brake disc (6) and interior piston (13), and output shaft (3) are rotated through the bearing at both ends and are connected in shell (1), characterized by: an output shaft (3) is sequentially connected with an inner piston (13) and a cylinder body (5), the inner piston (13) is positioned in an inner cavity of the cylinder body (5), a brake disc (6) is clamped between the outer rings of the cylinder body (5) and the outer piston (4), an outer piston (4) is sleeved on a cylinder body shaft extension end (15) of the cylinder body (5), the cylinder body (5) is connected with the inner rings of the outer piston (4) through a plurality of elastic compression assemblies, and the elastic compression assemblies are uniformly distributed along the circumferential direction of the outer piston (4); an axial medium channel (7) is arranged on the output shaft (3) along the axial direction, a radial medium channel (8) is arranged on the output shaft (3) along the radial direction, and a first medium chamber for accommodating a medium is arranged between the inner piston (13) and the bottom of the inner cavity of the cylinder body (5); one end of the axial medium channel (7) is communicated with the outside, the other end of the axial medium channel (7) is connected with one end of the radial medium channel (8), and the other end of the radial medium channel (8) is connected with the first medium chamber; the cylinder body (5) is axially provided with a plurality of cylinder body axial medium channels (9), a second medium chamber is arranged between the cylinder body (5) and the outer piston (4), and two ends of the plurality of cylinder body axial medium channels (9) are respectively communicated with the first medium chamber and the second medium chamber;
When the power takeoff works, compressed air or pressure oil enters a first medium chamber between the cylinder body and the inner piston through an axial medium channel and a radial medium channel in the output shaft, a part of air or oil enters a second medium chamber between the outer piston and the cylinder body through the axial medium channel of the cylinder body, the outer piston is subjected to thrust to axially move until the outer piston is propped against the clamp spring, and at the moment, the brake disc is in a floating state and does not play a braking role; when the power takeoff is required to stop working, the air source or the pressure oil is cut off, and the spring pushes the outer piston back to the initial position because the relative positions of the screw and the cylinder body are fixed; the brake disc is clamped again by the inner piston and the cylinder body, so that friction moment for preventing rotation is generated, and further braking is realized.
2. The power take-off with braking function of claim 1, wherein: one side of the shell (1) is detachably connected with the end cover (2) through a connecting piece.
3. The power take-off with braking function of claim 1, wherein: the cylinder body shaft extension end (15) of the cylinder body (5) is provided with a clamp spring (14), and the clamp spring (14) is positioned at the rear end of the outer piston (4).
4. The power take-off with braking function of claim 1, wherein: the end face of the outer piston (4) facing the brake disc (6) is provided with a positioning ring groove (10) along the circumferential direction, and the brake disc (6) is sleeved in the positioning ring groove (10) in a positioning way.
5. The power take-off with braking function of claim 1, wherein: the elastic compression assembly comprises a spring (11) and a screw (12), the screw (12) penetrates through the outer piston (4) and is connected with the cylinder body (5) through threads, the spring (11) is sleeved on the screw (12), and the front end and the rear end of the spring (11) are respectively contacted with the inner end face of the outer piston (4) and the rear end face of the screw (12).
6. The power take-off with braking function of claim 1, wherein: the plurality of cylinder axial medium channels (9) are uniformly distributed along the circumferential direction of the cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911021664.5A CN110645290B (en) | 2019-10-25 | 2019-10-25 | Power takeoff with braking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911021664.5A CN110645290B (en) | 2019-10-25 | 2019-10-25 | Power takeoff with braking function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110645290A CN110645290A (en) | 2020-01-03 |
| CN110645290B true CN110645290B (en) | 2024-05-31 |
Family
ID=69013528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911021664.5A Active CN110645290B (en) | 2019-10-25 | 2019-10-25 | Power takeoff with braking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110645290B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB911686A (en) * | 1959-11-07 | 1962-11-28 | Asea Ab | Automatic adjustment device for hydraulically or pneumatically controlled brakes |
| EP1106841A2 (en) * | 1999-12-07 | 2001-06-13 | Weber-Hydraulik GmbH | Linear positioning drive |
| CN203604483U (en) * | 2013-10-31 | 2014-05-21 | 西安双特智能传动有限公司 | Power takeoff |
| CN204610696U (en) * | 2015-04-29 | 2015-09-02 | 浙江帕瓦传动设备有限公司 | A kind of monadic power-taking device |
| CN206287830U (en) * | 2016-12-23 | 2017-06-30 | 无锡英特帕普威孚液压有限责任公司 | Power takeoff with built-in brake |
| CN210919900U (en) * | 2019-10-25 | 2020-07-03 | 无锡英特帕普威孚液压有限责任公司 | Power takeoff with braking function |
-
2019
- 2019-10-25 CN CN201911021664.5A patent/CN110645290B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB911686A (en) * | 1959-11-07 | 1962-11-28 | Asea Ab | Automatic adjustment device for hydraulically or pneumatically controlled brakes |
| EP1106841A2 (en) * | 1999-12-07 | 2001-06-13 | Weber-Hydraulik GmbH | Linear positioning drive |
| CN203604483U (en) * | 2013-10-31 | 2014-05-21 | 西安双特智能传动有限公司 | Power takeoff |
| CN204610696U (en) * | 2015-04-29 | 2015-09-02 | 浙江帕瓦传动设备有限公司 | A kind of monadic power-taking device |
| CN206287830U (en) * | 2016-12-23 | 2017-06-30 | 无锡英特帕普威孚液压有限责任公司 | Power takeoff with built-in brake |
| CN210919900U (en) * | 2019-10-25 | 2020-07-03 | 无锡英特帕普威孚液压有限责任公司 | Power takeoff with braking function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110645290A (en) | 2020-01-03 |
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