CN203161903U - Block brake - Google Patents
Block brake Download PDFInfo
- Publication number
- CN203161903U CN203161903U CN 201220675826 CN201220675826U CN203161903U CN 203161903 U CN203161903 U CN 203161903U CN 201220675826 CN201220675826 CN 201220675826 CN 201220675826 U CN201220675826 U CN 201220675826U CN 203161903 U CN203161903 U CN 203161903U
- Authority
- CN
- China
- Prior art keywords
- groove
- brake
- trapezoidal
- annular
- ring
- 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
Links
Images
Landscapes
- Braking Arrangements (AREA)
Abstract
A block brake comprises a brake shoe and a brake wheel. At least an annular groove is formed in the friction surface of the brake shoe, and the friction surface of the brake wheel is matched with the annular groove. The annular groove is an annular curved surface groove, and the friction surface of the brake wheel is an annular curved surface element rest matched with the annular curved surface groove. Because the groove is formed in the brake surface of the block brake and the friction area is increased, the brake force can be increased without need of great trampling force or oil pressure, or the brake wheel with larger diameter. For annular trapezoidal groove matched with the annular trapezoidal element rest, when the annular trapezoidal groove and the annular trapezoidal element rest are tightly adhered to each other completely (the included angles of the trapezoidal groove and the trapezoidal element rest are the same), because the average width value of the trapezoidal element rest is slightly larger than that of the trapezoidal groove and the top of the trapezoidal element rest is circular, when the trapezoidal element rest further moves forward, the groove produces great gripping force, so as to brake effectively.
Description
Technical field
The utility model relates to the braking equipment in the harbour machinery, specifically is exactly block brake.
Background technique
Block brake can be divided into two kinds on short stroke break and long stroke break again according to the length of the stroke that declutches.
(1) working principle of short stroke break
When mechanism cut off the power supply, the main spring catch bar was outwards upheld, and the shaped as frame pull bar moves inwards simultaneously, spurred left and right brake arm, makes the braking tile fragment, was pressed on the Brake drum, and the friction torque that produces between brake shoe and the Brake drum makes mechanism's braking.After mechanism's energising, electromagnet armature is attracted to iron core.Armature promotes push rod to the right, further compress main spring, at this moment left brake arm is under the eccentricity pressure effect that the electromagnet deadweight produces, automatically left-leaning, make left side braking tile fragment leave Brake drum, left brake arm is obstructed when deflecting into the position of adjusting bolt and stops, meanwhile, auxiliary spring inclines the right braking of right brake arm drive tile fragment to the right, away from Brake drum, realizes declutching.The short stroke break have declutch rapid with brake application, size is little, contact evenly, be convenient to advantages such as adjustment with tile fragment from heavy and light, Brake drum, but because the restriction of electromagnet suction, generally be used in the less and mechanism of Brake drum diameter less than 300mm of braking moment.
(2) long stroke break working principle
Because the short stroke break is subjected to the restriction of electromagnet suction, can not obtain big braking moment, so the mechanism of braking moment adopts long stroke electromagnetic tile fragment break more.Long stroke break also is to rely on main spring brake application, electromagnet to declutch, but because electromagnet can increase upper locking force by lever system, so can obtain bigger braking moment.
The advantage of electromagnetism block brake be simple in structure, can with the operating circuit of motor interlocking, so when motor work stops or cutting off the power supply suddenly, break can automatic brake application, and is safe and reliable.But fierce impact (the short stroke break impacts particularly violent) is arranged during owing to the electromagnet action, noise is very big, and fierce brake can produce harmful effect to mechanism, need start continually and brake owing to mechanism simultaneously, electromagnet is constantly collided, thereby the life-span is lower, needs often maintenance.Therefore, it is reliable that lifting mechanism is generally used the long stroke break of three phase current.
(3) working principle of hydraulic electromagnet break
The hydraulic electromagnet break is structurally basic identical with long stroke tile fragment break, has just replaced original electromagnet with hydraulic electromagnet.Its working principle is: behind coil electricity, moving iron core is attracted to move upward by static iron core, and the fluid in the crack, two iron cores interval is extruded, and these fluid promote pistons push rod is extruded, and promote lever plate simultaneously, further compress main spring, and break is declutched.One-way valve by, form, when not having pressure in the following oil pocket, the deadweight of valve block makes one-way valve opens, oil flow back to working oil chamber from oil cylinder.When in the working oil chamber pressure being arranged, valve block is pressed towards top O-ring seals, and oil circuit is cut off.One-way valve can guarantee that moving iron core can be fallen at the end when coil blackout.Behind coil blackout, push rod is subjected to the pressure effect of brake spring, move down, oil below the piston flow back into iron core gap again, and after outage, moving iron core is fallen the bottom simultaneously, the top lower valve jack-up with base valve of bottom center, oil during the working clearance flows back to oil cylinder through passage, and piston is fully descended, thereby guarantee to brake tile fragment Brake drum is held tightly.Should earlier bleeder screw be turned on during oiling, put the air of clean the inside, could guarantee the hydraulic electromagnet proper functioning.
Though more than which kind of break, all be that the friction torque that produces between brake shoe and the Brake drum makes mechanism's braking, be crucial so increase the frictional force that produces between brake shoe and the Brake drum.
Summary of the invention
In order to increase the frictional force that produces between brake shoe and the Brake drum, the utility model provides a kind of block brake.
The utility model is achieved in that a kind of tile fragment break, comprises brake shoe and Brake drum, and the rubbing surface of brake shoe arranges at least one annular ditch groove, the face of the rubbing surface of Brake drum for matching with annular ditch groove; Described annular ditch groove is the ring-type trapezoidal groove, the ring-type trapezoidal convex tendon face of the rubbing surface of Brake drum for matching with the ring-type trapezoidal groove.
Described tile fragment break, the numerical value of the mean breadth of the trapezoidal convex tendon of described ring-type is greater than the numerical value of ring-type trapezoidal groove mean breadth.
Described tile fragment break, described annular ditch groove quantity are one of 2,3,4,5,6.
Described tile fragment break, described annular ditch groove is arranged on the rubbing surface of Brake drum, and the trapezoidal convex tendon of described ring-type is arranged on the rubbing surface of brake shoe.
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 the trapezoidal convex tendon of ring-type for the ring-type trapezoidal groove, when the trapezoidal convex tendon of ring-type trapezoidal groove and ring-type is adjacent to fully (the two angle is identical), because the numerical value of trapezoidal convex tendon mean breadth is less times greater than the numerical value of trapezoidal groove mean breadth, trapezoidal convex tendon moves forward a little again, groove just produces huge clamping force, can effectively brake.
Description of drawings
Fig. 1 is tile fragment break plan view.
Fig. 2 is tile fragment break curved surface rubbing surface structural representation.
Fig. 3 is the trapezoidal rubbing surface structural representation of tile fragment break.
Embodiment
As Fig. 1-3 one kind of tile fragment break, comprise brake shoe 1 and Brake drum 2, the rubbing surface of brake shoe arranges at least one annular ditch groove, the face of the rubbing surface of Brake drum for matching with annular ditch groove.
Tile fragment break as described in Figure 2, described annular ditch groove are ring-type curved surface groove 11, 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.
Tile fragment break as described in Figure 3, described annular ditch groove are ring-type trapezoidal groove 14, the ring-type trapezoidal convex tendon face 24 of the rubbing surface of Brake drum for matching with the ring-type trapezoidal groove.
Described tile fragment break, the numerical value of the mean breadth of described trapezoidal convex tendon is greater than the numerical value of trapezoidal groove mean breadth.
Described tile fragment break, described annular ditch groove quantity are one of 2,3,4,5,6.
Described tile fragment break, 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 brake shoe.
Claims (4)
1. a tile fragment break comprises brake shoe and Brake drum, it is characterized in that: the rubbing surface of brake shoe arranges at least one annular ditch groove, the face of the rubbing surface of Brake drum for matching with annular ditch groove; Described annular ditch groove is the ring-type trapezoidal groove, the ring-type trapezoidal convex tendon face of the rubbing surface of Brake drum for matching with the ring-type trapezoidal groove.
2. tile fragment break as claimed in claim 1, it is characterized in that: the numerical value of the mean breadth of the trapezoidal convex tendon of described ring-type is greater than the numerical value of ring-type trapezoidal groove mean breadth.
3. as the described tile fragment break of one of claim 1-2, it is characterized in that: described annular ditch groove quantity is one of 2,3,4,5,6.
4. as the described tile fragment break of one of claim 1-2, it is characterized in that: described annular ditch groove is arranged on the rubbing surface of Brake drum, and the trapezoidal convex tendon of described ring-type is arranged on the rubbing surface of brake shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675826 CN203161903U (en) | 2012-12-10 | 2012-12-10 | Block brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675826 CN203161903U (en) | 2012-12-10 | 2012-12-10 | Block brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161903U true CN203161903U (en) | 2013-08-28 |
Family
ID=49023089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220675826 Expired - Fee Related CN203161903U (en) | 2012-12-10 | 2012-12-10 | Block brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867608A (en) * | 2012-12-10 | 2014-06-18 | 杨勇 | Broken tile brake |
| WO2017036825A1 (en) * | 2015-09-01 | 2017-03-09 | Saf-Holland Gmbh | Drum brake and brake shoe |
-
2012
- 2012-12-10 CN CN 201220675826 patent/CN203161903U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867608A (en) * | 2012-12-10 | 2014-06-18 | 杨勇 | Broken tile brake |
| WO2017036825A1 (en) * | 2015-09-01 | 2017-03-09 | Saf-Holland Gmbh | Drum brake and brake shoe |
| US11002323B2 (en) | 2015-09-01 | 2021-05-11 | Saf-Holland Gmbh | Drum brake and brake shoe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202055781U (en) | Coiled tubing clamping device and injection head utilizing same | |
| CN203161903U (en) | Block brake | |
| CN203082075U (en) | Tile block type brake | |
| CN103527684B (en) | Industrial hydraulic disk brake | |
| CN102975079A (en) | Scraper-type guide rail protection device | |
| CN203161902U (en) | Block brake | |
| CN104226932B (en) | The pressure box fastener of precoated sand swage | |
| CN103867608A (en) | Broken tile brake | |
| CN202808258U (en) | Elevator brake | |
| CN106736782A (en) | A kind of subregion provides the magnechuck of magnetic force | |
| CN201723617U (en) | Ratchet wheel of pin roller type overrunning clutch | |
| CN102562003B (en) | Servo direct-driven oil pumping unit | |
| CN210985858U (en) | Disc type brake device for motor | |
| CN102562002B (en) | Direct-drive pumping unit of permanent-magnet disk-type motor | |
| CN204621937U (en) | The special dismantling device of a kind of hydraulic clutch | |
| CN202228464U (en) | Gear rack hydraulic cylinder device with ball head | |
| CN202182128U (en) | Electromagnetic clutch | |
| CN202390621U (en) | Novel wear-resisting sheet of circular knitting machine | |
| CN204724592U (en) | A kind of finishing mill inlet guide edger roll | |
| CN202628657U (en) | Spring type hydraulic ram | |
| CN204403215U (en) | A kind of friction plate structure | |
| CN106348124A (en) | Safety gear system with vibrational hydraulic source | |
| CN216665521U (en) | Centering adjusting disc for oil rod | |
| CN103569895A (en) | Braking device | |
| CN209370338U (en) | A kind of combined type return spring |
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: 20151210 |
|
| EXPY | Termination of patent right or utility model |