CN110451420A - A kind of eccentric abrasion prevention dual Piston brake - Google Patents
A kind of eccentric abrasion prevention dual Piston brake Download PDFInfo
- Publication number
- CN110451420A CN110451420A CN201910852711.4A CN201910852711A CN110451420A CN 110451420 A CN110451420 A CN 110451420A CN 201910852711 A CN201910852711 A CN 201910852711A CN 110451420 A CN110451420 A CN 110451420A
- Authority
- CN
- China
- Prior art keywords
- piston
- brake
- casing
- brake casing
- abrasion prevention
- 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.)
- Pending
Links
- 238000005299 abrasion Methods 0.000 title claims abstract description 18
- 230000009977 dual effect Effects 0.000 title claims abstract description 18
- 230000002265 prevention Effects 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 12
- 238000005336 cracking Methods 0.000 abstract description 11
- 239000003921 oil Substances 0.000 description 12
- 230000033001 locomotion Effects 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
- B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
-
- 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
-
- 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
- F16D2125/06—Pistons
-
- 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
- F16D2125/08—Seals, e.g. piston seals
Abstract
The invention belongs to hydraulic wireline winch brake technical fields, more particularly to a kind of eccentric abrasion prevention dual Piston brake, including end cap and brake casing, end cap is fixedly connected with brake casing, the internal sleeve of brake casing is equipped with piston I, piston II is set between the thinner one end of piston I and brake casing, seal assembly I is equipped between the thicker one end of piston I and brake casing, seal assembly III is equipped between piston II and brake casing, seal assembly II also is provided between piston I and piston II, brake casing is equipped with the brake circuit for leading to II axial gap of piston I and piston；Brake casing connect between centers with motor equipped with brake strip group, and brake strip group is equipped with elastic element between the end face of the thinner one end of piston I, the end face of the thicker one end of piston I and the interior shaft shoulder of end cap.Dual Piston structure reduces brake cracking pressure, avoids hydraulic wireline winch abnormal sound caused by due to brake not exclusively disengages.
Description
Technical field
The invention belongs to hydraulic wireline winch brake technical fields, and in particular to a kind of eccentric abrasion prevention dual Piston brake.
Background technique
Brake is the kernel component of hydraulic wireline winch, and the reasonability of brake design, the quality of performance are largely
On directly influence the overall performance of hydraulic wireline winch also concerning the safety of the course of work.Traditional hydraulic wireline winch is using list
Plunger type brake, this brake are limited by structure space, and it is smaller that brake oil liquid acts on the pressure area on piston, from
And cause brake cracking pressure big, when unloaded brake cannot be completely disengaged and generate abnormal sound.This external contractring brake is opened and is closed
Piston needs move axially in reciprocal fashion when conjunction, and piston seal uses O-ring seal under normal conditions, frequent past due to piston
Multiple movement, O-ring generation oil seepage phenomena easy to wear, simultaneously because unbalance stress can be generated under the various hoist operating conditions of winch, it is living
Plug there is also the friction phenomenon of concentrated wear during the motion, on the one hand the eccentric wear of piston will cause abnormal sound inside winch,
On the other hand also will cause piston leakage of oil causes brake cracking pressure not build up, and may also lead to brake at this time and beats not
Output existing internal abnormal sound.In addition, due to the internal friction after a certain period of time of winch inner components foozle and brake operation
Piece will appear different degrees of abrasion, this just needs timely adjustment brake force in order to avoid there is brake slide, existing to brake
The adjusting of brake force adjusts the normal pressure that disc spring provides friction plate using the thicker adjustment gasket of single-sheet thickness, works as braking
It is changed to relatively thin adjustment gasket when abnormal sound, thicker adjustment gasket is changed to when brake slide.Regulative mode is not accurate enough, adjustable
The selectivity of range is smaller, and adjustable degree is difficult to hold, and the tension of tune just will appear braking abnormal sound, and the pine excessively of tune will appear system again
It is dynamic to glide.
Summary of the invention
Place, the present invention provide a kind of eccentric abrasion prevention dual Piston brake in order to overcome the above-mentioned deficiencies of the prior art.
The present invention is achieved through the following technical solutions: a kind of eccentric abrasion prevention dual Piston brake, including end cap and system
Dynamic device shell, end cap are fixedly connected with brake casing, and the internal sleeve of brake casing is equipped with piston I, the thinner one end of piston I
It is set with piston II between brake casing, seal assembly I, piston are equipped between the thicker one end of piston I and brake casing
It is equipped with seal assembly III between II and brake casing, seal assembly II also is provided between piston I and piston II, is set on brake casing
There is the brake circuit for leading to II axial gap of piston I and piston；Brake casing connect between centers with motor equipped with brake strip
Group, brake strip group are set between the end face of the thinner one end of piston I, the end face of the thicker one end of piston I and the interior shaft shoulder of end cap
Have elastic component.
Further, gasket group is equipped between the end face and elastic element of described thicker one end of piston I, gasket group includes thick
Gasket and thin gasket group, thick gasket are arranged close to elastic element side, and thin gasket group includes the thin type of several 0.25mm ~ 0.3mm
Disk.
Further, the brake strip group includes friction stationary plate and friction movable plate, and brake casing is equipped with interior
Toothing is connected with the outer toothing on friction stationary plate, and motor connecting shaft is equipped with the internal tooth knot of outer toothing and the movable plate that rubs
Structure is connected；Friction stationary plate and friction movable plate are alternately arranged.
Further, the seal assembly I includes support ring I and combination envelope I, and support ring I is located at a left side for combination envelope I
Side；The seal assembly III is combination envelope III；The seal assembly II includes support ring II and combination envelope II, support ring II
Positioned at the left side of combination envelope II.
Further, the support ring I and support ring II are that be filled with the section of polyformaldehyde material and notch be side
The annular element of shape.
Further, combination envelope I, combination envelope II and combination envelope III are by a polyurethane seal slip ring and one
Square rubber sealing ring composition.
Further, O-ring seal is equipped between the end cap and brake casing.
Further, the elastic element is disc spring.
The beneficial effects of the present invention are: dual Piston structure reduces brake cracking pressure, avoid because brake is endless
Complete disengage and caused by hydraulic wireline winch abnormal sound；It is solved using new piston sealing structure living in piston axial reciprocating motion process
Fill in leakage of oil problem caused by sealing wear；Supporting ring structure provided around piston solves in piston axially reciprocating
Because of piston eccentric wear problem caused by winch hoist unbalance stress, and then solve the work abnormal sound and piston occurred by piston eccentric wear
Sealing wear leakage of oil problem；The optimization of brake braking force regulative mode is, it can be achieved that multi-disc is adjusted, and degree of regulation is higher, easily
It quickly adjusts in place, improves the security performance of brake.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
In figure, 1, end cap, 2, O-ring seal, 3, brake casing, 4, support ring I, 5, combination envelope I, 6, piston I, 7, combination envelope
III, 8, piston II, 9, support ring II, 10, combination envelope II, 11, friction stationary plate, 12, friction movable plate, 13, motor connecting shaft, 14,
Thin gasket group, 15, thick gasket, 16, elastic element, 17, brake circuit.
Specific embodiment
Below according to drawings and examples, the present invention is further described.
As shown in Figure 1, a kind of eccentric abrasion prevention dual Piston brake, including end cap 1 and brake casing 3, end cap 1 and braking
Device shell 3 is fixedly connected, and the internal sleeve of brake casing 3 is equipped with piston I 6, the thinner one end of piston I 6 and brake casing 3 it
Between be set with piston II 8, between the thicker one end of piston I 6 and brake casing 3 be equipped with seal assembly I, piston II 8 and brake
It is equipped with seal assembly III between shell 3, seal assembly II also is provided between piston I 6 and piston II 8, brake casing 3, which is equipped with, to lead to
The brake circuit 17 of II 8 axial gap of piston I 6 and piston；Brake strip is equipped between brake casing 3 and motor connecting shaft 13
Group, brake strip group is between the end face of the thinner one end of piston I 6, the end face of the thicker one end of piston I 6 and the interior shaft shoulder of end cap 1
Equipped with elastic element 16, elastic element 16 is set to generate certain deflection shape by the setting of the spacing of end cap 1 and piston I 6
The normal pressure of pairs of piston I 6.The pressure oil to come from brake circuit 17 pushes piston I 6 open so that brake strip group is in pine
Open state, hydraulic wireline winch can realize operating, and when pressure oil off-load, piston I 6 compresses braking under the action of elastic element 16
Friction plate group, hydraulic wireline winch realize braking.16 normal pressure of cracking pressure, that is, elastic element of brake divided by hydraulic oil pressure
Area, if the pressure area of hydraulic oil is small, for cracking pressure with regard to big, cracking pressure is excessive to will cause hydraulic wireline winch zero load or light
When carrying turns, oil pressure can not push piston I 6 open and prevent brake that brake abnormal sound occurs from completely disengaged.Under normal conditions
Single-piston because being limited by internal structure and processing and manufacturing, the pressure area design of hydraulic oil it is smaller cause cracking pressure compared with
Greatly, and the piston II 8 of dual Piston structure just compensate for this deficiency, the pressure area of the hydraulic oil of piston I 6 can be made not
It is limited again, increases the pressure area of its hydraulic oil, suitably reduce the cracking pressure of brake.
As the improvement of the present embodiment, gasket is equipped between the end face and elastic element 16 of described thicker one end of piston I 6
Group, gasket group include thick gasket 15 and thin gasket group 14, and thick gasket 15 is arranged close to 16 side of elastic element, and thin gasket group 14 is wrapped
Thin type disk containing several 0.25mm ~ 0.3mm.Thin type disk is set between piston I 6 and elastic element 16, for adjusting bullet
The pressing force of property element 16, and then the cracking pressure and brake force of regulating brake, when the excessive braking of 16 pressing force of elastic element
When device makes sound, the quantity of thin type disk can be reduced, when appearance braking can't lock in work, the quantity of thin type disk can be increased.
Thin type wafer thickness is arranged compared with the existing technology very thin, it can be achieved that multi-disc is adjusted, and degree of regulation is higher, easily quickly adjusts and arrives
Position, improves the security performance of brake.
Further, the brake strip group includes friction stationary plate 11 and friction movable plate 12, is set on brake casing 3
There is internal tooth arrangement to be connected with the outer toothing to rub on stationary plate 11, motor connecting shaft 13 is equipped with outer toothing and friction movable plate
12 internal tooth arrangement is connected；Friction stationary plate 11 and friction movable plate 12 are alternately arranged.
As the improvement of the present embodiment, the seal assembly I includes support ring I 4 and combination envelope I 5, and support ring I 4 is located at
The left side of combination envelope I 5；The seal assembly III is combination envelope III 7；The seal assembly II includes support ring II 9 and group
Envelope II 10 is closed, support ring II 9 is located at the left side of combination envelope II 10.The piston II 8 matches to form double-piston with piston I 6
Structure is placed in brake casing 3 and matches with brake casing 3, and piston I 6 will be braked by the normal pressure of elastic element 16
Friction plate group compresses, and support ring I 4, combination envelope I 5 and support ring II 9, combination envelope II 10, piston II 8 are disposed with around piston I 6
Surrounding is disposed with combination envelope III 7, realizes the sealing function between piston I 6 and piston II 8, piston II 8 and brake casing 3.
As the improvement of the present embodiment, the support ring I 4 and support ring II 9 are to be filled with polyformaldehyde material and cut
The section of mouth is rectangular annular element；In the reciprocatory movement of piston I 6, support ring can play good supporting role,
Slow down piston I 6 because of eccentric wear problem caused by unbalance stress, also reduces the abrasion to combination envelope.
As the improvement of the present embodiment, the combination envelope I 5, combination envelope II 10 and combination envelope III 7 are by a polyurethane
Seal slip ring and a square rubber sealing ring composition；There is a concave structure on the sealing surface of polyurethane seal slip ring, it is this
Structure has good wearability and leakproofness.
Further, O-ring seal 2 is equipped between the end cap 1 and brake casing 3.End cap 1 and brake casing 3
Realize the brake apparatus in brake casing 3 relative to the sealing function outside end cap 1 by O-ring seal 2.
Further, the elastic element 16 is disc spring.
Single-piston formula brake is limited by structure and space, and the oil pressure pressure area acted on piston is small, and brake is opened
It is big to open pressure, brake is not easy to open and generate abnormal sound；The application is acted on piston by dual-piston structure form, increase
Oil pressure pressure area, reduces brake cracking pressure, avoids hydraulic wireline winch abnormal sound caused by due to brake not exclusively disengages.
Brake plunger use O-ring seal, the type frequently reciprocating of piston or during the motion because winch work
When unbalance stress and there is friction phenomenon, piston eccentric wear will cause winch work when inside abnormal sound, also will cause piston seal infiltration
Oil leak；The application selects the piston seal of combination envelope, solves in piston axial reciprocating motion process caused by piston seal abrasion
Leakage of oil problem.
The brake-force control of existing brake is inaccurate, and adjusting difficulty is larger, is not easy to adjust in place；The application is by adopting
With several thinner gaskets, keep adjusting more accurate, is easier to adjust in place, promotes brake performance.
Claims (8)
1. a kind of eccentric abrasion prevention dual Piston brake, it is characterised in that: including end cap (1) and brake casing (3), end cap (1)
It is fixedly connected with brake casing (3), the internal sleeve of brake casing (3) is equipped with piston I (6), the thinner one end of piston I (6)
It is set with piston II (8) between brake casing (3), is equipped between the thicker one end of piston I (6) and brake casing (3) close
Sealing assembly I is equipped with seal assembly III, also is provided between piston I (6) and piston II (8) between piston II (8) and brake casing (3)
Seal assembly II, brake casing (3) are equipped with the brake circuit (17) for leading to piston I (6) and piston II (8) axial gap；
Brake strip group is equipped between brake casing (3) and motor connecting shaft (13), brake strip group is relatively thin close to piston I (6)
The end face of one end is equipped with elastic element (16) between the end face of the thicker one end of piston I (6) and the interior shaft shoulder of end cap (1).
2. a kind of eccentric abrasion prevention dual Piston brake according to claim 1, it is characterised in that: the piston I (6) compared with
Equipped with gasket group between the end face and elastic element (16) of thick one end, gasket group includes thick gasket (15) and thin gasket group (14), slightly
Gasket (15) is arranged close to elastic element (16) side, and thin gasket group (14) includes the thin type disk of several 0.25mm ~ 0.3mm.
3. a kind of eccentric abrasion prevention dual Piston brake according to claim 1, it is characterised in that: the brake strip
Group includes friction stationary plate (11) and friction movable plate (12), and brake casing (3) is equipped on internal tooth arrangement and friction stationary plate (11)
Outer toothing be connected, motor connecting shaft (13) be equipped with outer toothing with friction movable plate (12) internal tooth arrangement be connected；
Friction stationary plate (11) and friction movable plate (12) are alternately arranged.
4. a kind of eccentric abrasion prevention dual Piston brake according to claim 1, it is characterised in that: the seal assembly I
Including I (5) of support ring I (4) and combination envelope, support ring I (4) is located at the left side of I (5) of combination envelope；The seal assembly III is
III (7) of combination envelope；The seal assembly II includes II (10) of support ring II (9) and combination envelope, and support ring II (9) is located at combination
Seal the left side of II (10).
5. a kind of eccentric abrasion prevention dual Piston brake according to claim 4, it is characterised in that: the support ring I (4)
It is that be filled with the section of polyformaldehyde material and notch be rectangular annular element with support ring II (9).
6. a kind of eccentric abrasion prevention dual Piston brake according to claim 4, it is characterised in that: the combination envelope I
(5), combination II (10) of envelope and III (7) of combination envelope are made of a polyurethane seal slip ring and a square rubber sealing ring.
7. a kind of eccentric abrasion prevention dual Piston brake according to claim 1, it is characterised in that: the end cap (1) and
O-ring seal (2) are equipped between brake casing (3).
8. a kind of eccentric abrasion prevention dual Piston brake according to claim 1, it is characterised in that: the elastic element
It (16) is disc spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852711.4A CN110451420A (en) | 2019-09-10 | 2019-09-10 | A kind of eccentric abrasion prevention dual Piston brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852711.4A CN110451420A (en) | 2019-09-10 | 2019-09-10 | A kind of eccentric abrasion prevention dual Piston brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110451420A true CN110451420A (en) | 2019-11-15 |
Family
ID=68491435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910852711.4A Pending CN110451420A (en) | 2019-09-10 | 2019-09-10 | A kind of eccentric abrasion prevention dual Piston brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110451420A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10240592A1 (en) * | 2002-08-28 | 2004-03-25 | Stromag Ag | Multi layer friction brake for vehicle is operated by a brake cylinder with an automatic adjustment for compensating friction pad wear |
| CN102345695A (en) * | 2011-07-20 | 2012-02-08 | 徐州科源液压有限公司 | Normally open brake of hydraulic transmission device |
| CN203584960U (en) * | 2013-11-20 | 2014-05-07 | 徐州徐工液压件有限公司 | Hydraulic cylinder piston combined type sealing structure |
| CN106763315A (en) * | 2017-02-23 | 2017-05-31 | 徐州徐工随车起重机有限公司 | A kind of crane reducer brake |
| CN210736079U (en) * | 2019-09-10 | 2020-06-12 | 徐州徐工随车起重机有限公司 | Eccentric wear prevention double-piston brake |
-
2019
- 2019-09-10 CN CN201910852711.4A patent/CN110451420A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10240592A1 (en) * | 2002-08-28 | 2004-03-25 | Stromag Ag | Multi layer friction brake for vehicle is operated by a brake cylinder with an automatic adjustment for compensating friction pad wear |
| CN102345695A (en) * | 2011-07-20 | 2012-02-08 | 徐州科源液压有限公司 | Normally open brake of hydraulic transmission device |
| CN203584960U (en) * | 2013-11-20 | 2014-05-07 | 徐州徐工液压件有限公司 | Hydraulic cylinder piston combined type sealing structure |
| CN106763315A (en) * | 2017-02-23 | 2017-05-31 | 徐州徐工随车起重机有限公司 | A kind of crane reducer brake |
| CN210736079U (en) * | 2019-09-10 | 2020-06-12 | 徐州徐工随车起重机有限公司 | Eccentric wear prevention double-piston brake |
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