CN203161899U - Belt brake - Google Patents
Belt brake Download PDFInfo
- Publication number
- CN203161899U CN203161899U CN 201220675771 CN201220675771U CN203161899U CN 203161899 U CN203161899 U CN 203161899U CN 201220675771 CN201220675771 CN 201220675771 CN 201220675771 U CN201220675771 U CN 201220675771U CN 203161899 U CN203161899 U CN 203161899U
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- CN
- China
- Prior art keywords
- brake
- annular
- troughs
- convex ribs
- shaped
- 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
A belt brake comprises a brake belt, as well as a brake wheel and a brake lever which are connected with a mechanism, wherein at least one annular trough is formed in a friction surface of the brake belt, and the friction surface of the brake wheel is matched with the annular troughs. According to the belt brake, the troughs are formed in the brake surface, so that the friction area is increased, and a great tread force or high oil pressure is not required. A brake force can be increased without employing the brake wheel in a greater diameter. For the situation that the annular V-shaped troughs are matched with annular V-shaped convex ribs, when the annular V-shaped troughs are completely fit with the annular V-shaped convex ribs (included angles of the annular V-shaped troughs and the annular V-shaped convex ribs are the same), since the mean widths of the V-shaped convex ribs are greater than those of the V-shaped troughs slightly, and the top ends of the V-shaped convex ribs are arc, the V-shaped convex ribs move forward slightly, the troughs can generate great clamp forces, the effective brake can be achieved, and the situation that the annular trapezoidal troughs are matched with the annular trapezoidal convex ribs is the same as the situation that the annular V-shaped troughs are matched with the annular V-shaped convex ribs.
Description
Technical field
The utility model relates to the braking equipment that is generally used for middle-size and small-size hoist, vehicle and human control, specifically is exactly a kind of band brake.
Background technique
Band brake partly is made up of clamping strap, the Brake drum that links to each other with mechanism, lever, combined floodgate weight and the electromagnet that declutches etc.The gravity of weight is by lever tension clamping strap and hug Brake drum realization braking, is normally closed brake.When needs declutch, the electromagnet energising, electromagnetic attraction overcomes the gravity of weight and lever, and lever is rotated counterclockwise, and clamping strap is thrown off Brake drum, realizes declutching.
Clamping strap can be made of a steel.In order to increase friction factor, be lined with the bigger materials of friction factor such as asbestos yarn or wooden unit at the working surface of being with, lining is fixed on the steel band with rivet or screw.When break declutches, should make the radial clearance that forms worker 1-1.5mm between clamping strap and Brake drum, at the fixed dam that is peripherally equipped with of clamping strap, guarantee the even of radial clearance with adjusting screw uniform on the baffle plate.
According to clamping strap and brake lever tie point lever is propped up the position cover of worry, band brake is divided into simple belt, three kinds of differential belt and comprehensive belts.
The structural feature of comprehensive band brake simple band brake is that clamping strap one end is fixed on the frame (being balance pivot), and the other end is fixed on the brake lever after walking around Brake drum.During braking, clamping strap one end is motionless, and the other end tightens up.The structural feature of differential band brake is that the clamping strap two ends all are fixed on the brake lever, and the both sides of the balance pivot that is placed in.The tension force moment about point of support at clamping strap two ends is opposite, so when braking, clamping strap one end tightens up and the other end loosens.The structural feature of comprehensive band brake is that the clamping strap two ends all are fixed on braking and beat on the bar, and places the homonymy of balance pivot.
At present, in order to increase friction factor, all be to be lined with the bigger materials of friction factor such as asbestos yarn or wooden unit at the working surface of being with, it is crucial how increasing the frictional force that produces between clamping strap and the Brake drum.
Summary of the invention
In order to increase the frictional force that produces between clamping strap and the Brake drum, the utility model provides a kind of band brake.
The utility model is achieved in that a kind of band brake, comprises clamping strap, the Brake drum that links to each other with mechanism and brake lever, and the rubbing surface of clamping strap arranges at least one annular ditch groove, the face of the rubbing surface of Brake drum for matching with annular ditch groove; Described ring-type curved surface groove is the ring-type arc groove, the ring-type circular arc convex tendon face of the rubbing surface of Brake drum for matching with the ring-type arc groove.
Described annular ditch groove quantity is one of 2,3,4,5,6.
Described annular ditch groove is arranged on the rubbing surface of Brake drum, and described ring-type circular arc convex tendon is arranged on the rubbing surface of clamping strap.
Braking surface of the present utility model is established groove, has increased friction area, does not need big stampede power or oil pressure.Need not use the bigger Brake drum of diameter yet, just can improve the strength of braking.Cooperate ring-type V-shape convex tendon for ring-type V-shape groove, when ring-type V-shape groove is adjacent to fully with ring-type V-shape convex tendon (the two angle is identical), because the numerical value of V-shape convex tendon mean breadth is less times greater than the numerical value of V-shape groove mean breadth, V-shape convex tendon top is circular arc, the V-shape convex tendon moves forward a little again, groove just produces huge clamping force, can effectively brake, the ring-type trapezoidal groove cooperates the situation of the trapezoidal convex tendon of ring-type to cooperate the situation of ring-type V-shape convex tendon the same with ring-type V-shape groove.
Description of drawings
Fig. 1 is band brake master TV structure schematic representation.
Fig. 2 is band brake curved surface rubbing surface structural representation.
Fig. 3 is band brake circular arc rubbing surface structural representation.
Embodiment
As Fig. 1-3 one kind of band brake, the Brake drum 2 that comprise clamping strap 1, links to each other with mechanism and brake lever 3, the rubbing surface of clamping strap arranges at least one annular ditch groove, the face of the rubbing surface of Brake drum for matching with annular ditch groove.
Annular ditch groove is ring-type curved surface groove 11 as described in Figure 2, the ring-type curved surface convex tendon face 21 of the rubbing surface of Brake drum for matching with the ring-type curved surface groove.
The ring-type curved surface groove is ring-type arc groove 12 as described in Figure 3, the ring-type circular arc convex tendon face 22 of the rubbing surface of Brake drum for matching with the ring-type arc groove.
Described annular ditch groove quantity is one of 2,3,4,5,6.
Described annular ditch groove is arranged on the rubbing surface of Brake drum, and described ring-type convex tendon is arranged on the rubbing surface of clamping strap.
Claims (3)
1. a band brake comprises clamping strap, the Brake drum that links to each other with mechanism and brake lever, it is characterized in that: the rubbing surface of clamping strap arranges at least one annular ditch groove, the face of the rubbing surface of Brake drum for matching with annular ditch groove; Described ring-type curved surface groove is the ring-type arc groove, the ring-type circular arc convex tendon face of the rubbing surface of Brake drum for matching with the ring-type arc groove.
2. band brake as claimed in claim 1 is characterized in that: described annular ditch groove quantity is one of 2,3,4,5,6.
3. band brake as claimed in claim 1, it is characterized in that: described annular ditch groove is arranged on the rubbing surface of Brake drum, and described ring-type circular arc convex tendon is arranged on the rubbing surface of clamping strap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675771 CN203161899U (en) | 2012-12-10 | 2012-12-10 | Belt brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675771 CN203161899U (en) | 2012-12-10 | 2012-12-10 | Belt brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161899U true CN203161899U (en) | 2013-08-28 |
Family
ID=49023085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220675771 Expired - Fee Related CN203161899U (en) | 2012-12-10 | 2012-12-10 | Belt brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161899U (en) |
-
2012
- 2012-12-10 CN CN 201220675771 patent/CN203161899U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20141210 |
|
| EXPY | Termination of patent right or utility model |