CN2188056Y - Brake - Google Patents
Brake Download PDFInfo
- Publication number
- CN2188056Y CN2188056Y CN 93231486 CN93231486U CN2188056Y CN 2188056 Y CN2188056 Y CN 2188056Y CN 93231486 CN93231486 CN 93231486 CN 93231486 U CN93231486 U CN 93231486U CN 2188056 Y CN2188056 Y CN 2188056Y
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- CN
- China
- Prior art keywords
- oil
- housing
- transmission shaft
- brake
- model
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a braking device which is suitable for a mechanical device with large inertia and specially a mechanical device for mine transportation. The braking device is mainly composed of a casing, a left flange plate, a right flange plate, a bearing seat, a matching oil sleeve, a driving shaft, etc. The braking device is characterized in that the casing is connected with a static friction slice. The driving shaft is connected with a movable friction slice. Sticky operating oil liquid which flows is fully arranged between the static friction slice and the movable friction slice. A piston is arranged in the casing. The inner cavity of the piston is provided with a butterfly spring whose right end is provided with a pressure spring assembly. When the utility model is used for the braking, a torque can be adjusted. The utility model has the advantages of stable operation, low temperature rise, and reliable explosion proof performance. The utility model can be used for the braking of accident interruption.
Description
The utility model belongs to the resistance braking device of big inertia mechanical equipment, is specially adapted to require in the carrying machine in mine occasion of regulation and control brake torque, explosion-proof braking and forced outage braking.
In mechanical equipment, belong at present and utilize liquid to brake or the device of transmission mainly contains: (one) hydraulic brake: utilize the power of liquid to brake, itself can't realize the forced outage braking, must be used with mechanical brake during low speed; (2) hydraulic brake: utilize the pressure of liquid to brake, brake torque is too little during low speed; (3) oil film friction governor: belong to driving device.Big inertia mechanical equipment is carrying machine in mine equipment particularly, requires to keep permanent deceleration/decel in stopping brake; Under the forced outage state, require safety arrestment; In the underground work environment, also require explosion-proof braking.Present most brake equipments all can not satisfy above-mentioned requirements simultaneously.
The purpose of this utility model is to design that a kind of brake torque is adjustable, surface temperature rise is low, explosion-proof reliable, the new braking device that can realize the forced outage braking.
The utility model is mainly by housing 3, left flange plate 12, right flange 4, bearing seat 5, join oil jacket 6, transmission shaft 7 compositions such as grade is characterized in that being connected with multi-disc static friction sheet 1 on housing 3, are connected with multi-disc movable friction plate 2 on the transmission shaft 7, be full of mobile viscosity work fluid between dynamic and static, piston 9 is housed in the housing 3, and piston 9 inner chambers are equipped with butterfly spring 10, and butterfly spring 10 right-hand members have a compression spring component 11, in order to regulate the pre compressed magnitude of butterfly spring, sheet crack indicator stem 13 is stretched in outside the housing 3.
The utility model has the advantages that in braking procedure adjustable moment of torsion, moving row steadily, temperature rise is low, explosion-proof reliable, can be used for the forced outage braking.This utility model and peripheral hardware electrohydraulic system constitute closed loop, can realize automatic guidance, are a kind of later-model brake equipments.
Description of drawings: Fig. 1 is the utility model structural representation, and Fig. 2 is the transverse cross-sectional view of movable friction plate end face oil groove.
---static friction sheet 2---movable friction plate wherein: 1
The right flange of 3---housings 4---
5---bearing seats 6---are joined oil jacket
7---transmission shaft 8---spring column pin
9---piston 10---butterfly spring
11---compression spring component (comprising d, e, f, g, 4 parts in addition)
12---left flange plate 13---sheet crack indicator stem
A---power fluid inlet B---power fluid outlet C---control port
I---dynamic pressure oil groove II---oil guide groove
Now in conjunction with the accompanying drawings principle of work of the present utility model and process are described in detail as follows:
Static friction sheet 1 is the involute spline with housing 3, movable friction plate 2 with transmission shaft 7 and is connected, and dynamic and static friction lining all can slide vertically, and still can not rotate, and moving plate can rotate with transmission shaft.Two oil pockets are arranged in the utility model, and one is the control oil pocket that piston 9 and housing 3 constitute, and another is the working oil chamber at dynamic and static friction lining place, and two oil pockets are separated by sealing member, and are independently of one another.Control fluid is imported by the C mouth.Work fluid adopts the axle center fuel system, is imported by the A mouth of joining on the oil jacket 6, enters working oil chamber by center deep hole and radial direction oil hole on the transmission shaft 7 again, and power fluid outlet B is positioned at housing 3 tops, can guarantee to be full of all the time between dynamic and static fluid.
Owing to be full of fluid between dynamic and static, so when transmission shaft rotates with angular velocity omega, oil-shear takes place between sheet, by the viscosity generation viscous braking moment of torsion of fluid, its size is:
M
2＝λμ (ω)/(h)
---structural constant μ---kinetic viscosity of fluid in the formula: λ
Dynamic and static slip of h---dynamic and static gap ω---
Following formula shows: when one timing of the utility model geometry size, λ is constant, viscous braking moment of torsion M
2ω is directly proportional with slip, and h is inversely proportional to the sheet crack, and the big more viscous braking moment of torsion of oil viscosity μ is just big more.
In braking procedure; As time goes on; slip ω of the present utility model is more and more littler; the viscous braking moment of torsion also reduces thereupon, therefore will keep enough brake torques in braking procedure, and the necessity of making use of momentum reduces sheet crack h(when ω reduces be oil film thickness); when h reduces to minimum oil film thickness; oil film breakdown, dynamic and static fits together each other, and after this utility model enters in short-term wet friction braking mode till shutting down.
The regulation and control of viscous braking moment of torsion are to realize by the pressure that changes control fluid.Fuel injection pressure signal is provided by the peripheral hardware hydraulic control system.When the control oil pressure reduced, piston 9 moved to left, and sheet crack h reduces, and makes moment of torsion M
2Increase.Fuel injection pressure signal can manual shift, also can be controlled by electric signal.
In the braking procedure, because relatively rotating between dynamic and static, oil-shear takes place in the sheet crack and produce heat, work fluid forces mobile under differential pressure action, in time heat is taken away by direct quenching, thereby the surface temperature rise that guarantees the utility model housing is not high, realizes reliably explosion-proof.
When having a power failure because of accident is unexpected, the control oil pressure reduces to zero, and piston moves to left under the elastic restoring force effect of butterfly spring, friction lining pressing the most at last, and keep predetermined thrust, main frame is reliably shut down under power down mode.
In order to make the oil film between dynamic and static form dynamic pressure and have certain rigidity, on the both ends of the surface of movable friction plate, all offered uniform radially oil groove, its horizontal section is two stepped appearances, and wherein the oil groove I is used to form kinetic pressure, and the oil groove II is mainly used in Oil Guide.
The utility model braking end of a period state is that ω=0 and dynamic and static press together, when removing system, piston moves to right, but the higher dynamic and static friction lining of end face working accuracy this moment, because the effect of viscosity fluid still is attached together firmly, for this reason between moving plate and the moving plate, all be provided with resilient separation element 8(spring column pin between still and the still), these pins are distributed in respectively in the between cog of spline tooth of housing and transmission shaft.
Behind the stopping brake, the utility model guarantees to stop reliable by butterfly spring pressing friction lining by the static friction moment of torsion.The precompressed amount of butterfly spring is come debugging mode by compression spring component 11, and this assembly left end spare cover d is pressed on the butterfly spring, and steel ball e is contained in the cover d, and barrel f links to each other with right flange 4 by screw thread.When assembling, can set up the precompressed amount of butterfly spring by this assembly easily, thereby guarantee that it reaches desired predetermincd tension: in use, then can reduce because of the precompressed amount that the wearing and tearing of friction lining cause, to guarantee the predetermincd tension of butterfly spring by the compensation in time of this assembly.The size of butterfly spring precompressed amount reflects that by the extension elongation of the outer sheet crack indicator stem 13 of housing screw g is locked in compression spring component on the bearing seat 5.
In order to make work fluid under action of centrifugal force, enter working oil chamber, help the evenly lubricated and cooling of friction lining, avoid the axial flow of work fluid and cause axial impact friction lining, work fluid adopts the axle center fuel system, and work fluid should adopt hydraulic transmission oil, hydraulic oil, the machinery oil of certain viscosity.
Claims (9)
1, a kind of particularly brake equipment of carrying machine in mine equipment of big inertia mechanical equipment that is applicable to, mainly by housing (3), left flange plate (12), right flange (4), bearing seat (5), join oil jacket (6), transmission shaft (7) is formed, it is characterized in that on housing (3), being connected with multi-disc static friction sheet (1), be connected with multi-disc movable friction plate (2) on the transmission shaft (7), moving, be full of mobile viscosity work fluid between the still, piston (9) is housed in the housing (3), piston (9) inner chamber is equipped with butterfly spring (10), butterfly spring (10) right-hand member has a compression spring component (11), in order to regulate the pre compressed magnitude of butterfly spring.
2, brake equipment according to claim 1 is characterized in that having a center deep hole and some radial direction oil hole on transmission shaft, in order to fuel feeding in dynamic and static friction lining crack.
3, brake equipment according to claim 1 is characterized in that movable friction plate (2) all adopts invoice serration to be connected with transmission shaft (7), static friction sheet (1) with housing (3).
4, it is characterized in that all having offered uniform radially oil groove on the both ends of the surface of movable friction plate according to claim 1 or 2 or 3 described brake equipments.
5, brake equipment according to claim 4 is characterized in that the radially oil groove on the described movable friction plate is two stepped appearances.
6, it is characterized in that between moving plate and the moving plate, be provided with resilient separation element (8) between still and the still according to claim 1 or 3 described brake equipments, be distributed in respectively in the between cog of spline tooth of housing and transmission shaft.
7, it is characterized in that compression spring component (11) according to claim 1 or 3 described brake equipments, by (d), (e), (f), (g), form, the cover (d) that steel ball (e) wherein is housed is contained on the barrel (f), barrel (f) links to each other with right flange (4), and screw (g) is locked in barrel (f) on the bearing seat (5).
8, brake equipment according to claim 7 is characterized in that the sheet crack indicator stem (13) of a band scale being housed on piston and stretching in outside the housing (3).
9, brake equipment according to claim 1 and 2 is characterized in that described viscosity work fluid can adopt hydraulic transmission oil, hydraulic oil, the machinery oil of certain viscosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93231486 CN2188056Y (en) | 1993-07-29 | 1993-07-29 | Brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93231486 CN2188056Y (en) | 1993-07-29 | 1993-07-29 | Brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2188056Y true CN2188056Y (en) | 1995-01-25 |
Family
ID=33807933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93231486 Expired - Fee Related CN2188056Y (en) | 1993-07-29 | 1993-07-29 | Brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2188056Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103910300A (en) * | 2014-03-06 | 2014-07-09 | 武汉船用机械有限责任公司 | Winding mechanism |
-
1993
- 1993-07-29 CN CN 93231486 patent/CN2188056Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103910300A (en) * | 2014-03-06 | 2014-07-09 | 武汉船用机械有限责任公司 | Winding mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |