CN202131043U - Superior brake - Google Patents
Superior brake Download PDFInfo
- Publication number
- CN202131043U CN202131043U CN201120229628U CN201120229628U CN202131043U CN 202131043 U CN202131043 U CN 202131043U CN 201120229628 U CN201120229628 U CN 201120229628U CN 201120229628 U CN201120229628 U CN 201120229628U CN 202131043 U CN202131043 U CN 202131043U
- Authority
- CN
- China
- Prior art keywords
- transmission gear
- rotating shaft
- brake
- sleeve
- brake disc
- 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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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to a superior brake, which is used for an electric hoist. The superior brake is sleeved on a rotating shaft (1) inside a speed reduction box of the electric hoist, a transmission gear (2) is screwed on the rotating shaft (1) through multiple threads, and a brake disc (3) is sleeved on the rotating shaft (1). The brake disc (3) is composed of a sleeve (3.1) and a collar flange (3.2) arranged on the sleeve (3.1), a ratchet wheel mechanism (4) is movably sleeved on the sleeve (3.1), and the left side face and the right side face of a ratchet wheel of the ratchet wheel mechanism (4) are both provided with friction plates (5). The transmission gear (2) is screwed along the threads towards the right, when the transmission gear moves to the rightmost end, the transmission gear (2), the ratchet wheel mechanism (4) and the brake disc (3) are pressed and connected together through the frictional force of the friction plates (5). The superior brake is capable of improving safety performance of the electric hoist.
Description
Technical field
The utility model relates to a kind of drg, especially relates to a kind of overrunning brake that is used on the electric block.
Background technology
At present; Usually only disposing a load brake on the electric block protects it; Thereby exist serious potential safety hazard: when the weight of electric block lifting meets accident tenesmus and motor braking et out of order, do not have corresponding brake equipment to carry out emergency braking.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of overrunning brake that can improve the electric block safety performance is provided.
The purpose of the utility model is achieved in that a kind of overrunning brake; Said drg is set in the rotating shaft in the electric block drop-gear box; Said transmission gear is spun in the rotating shaft through multiple screw thread; Be set with brake disc in the said rotating shaft, said brake disc is made up of sleeve and the ring flange that is arranged on the sleeve, is movably installed with a ratchet device on the said sleeve; The ratchet left and right sides face of said ratchet device is provided with friction lining, utilizes friction force that transmission gear, ratchet device and brake disc are pressed to put through friction lining when said transmission gear moves right to low order end along screw thread rotation and links together.
The utility model overrunning brake, said ratchet device and friction lining constitute an all-in-one-piece ratchet friction disc.
Compared with prior art, the beneficial effect of the utility model is:
After adopting the utility model overrunning brake on the circuit cucurbit; Make the circuit cucurbit have double protection functions; Have higher safety, owing to adopt multiple screw thread, make that the actuating quantity that carries out glancing impact is littler simultaneously; The tenesmus stroke of lifting weight is also littler, has further improved safety performance.
Description of drawings
Fig. 1 is the structural representation of the utility model overrunning brake.
Wherein:
Sleeve 3.1, flange 3.2.
The specific embodiment
Referring to Fig. 1; A kind of overrunning brake that the utility model relates to; Said drg is set in the rotating shaft 1 in the electric block drop-gear box, and said transmission gear 2 is spun in the rotating shaft 1 through multiple screw thread, is set with brake disc 3 through flat key in the said rotating shaft 1; Said brake disc 3 is made up of sleeve 3.1 and the ring flange 3.2 that is arranged on the sleeve 3.1; Be movably installed with a ratchet device 4 on the said sleeve 3.1, the ratchet of promptly said ratchet device 4 can move in a circle on sleeve 3.1, and the ratchet left and right sides face of said ratchet device 4 is provided with friction lining 5; Said ratchet device 4 constitutes an all-in-one-piece ratchet friction disc with friction lining 5, and said transmission gear 2 moves right along screw thread rotation and can utilize friction force that transmission gear 2, ratchet device 4 and brake disc 3 are pressed to put through friction lining 5 to link together.
During use, the utility model overrunning brake is installed in the drop-gear box of circuit cucurbit, and the main shaft that links to each other with motor carries out transmission through the engagement countershaft 1 with transmission gear 2.
The principle of work of the utility model overrunning brake is:
The motor operation that descends: do and rotate counterclockwise (with the A among Fig. 1 to observing) when motor drives transmission gear 2 through main shaft; Transmission gear 2 is moved to the left owing to being engaged in the rotating shaft 1 of screw thread simultaneously; When moving to high order end; Drive rotating shaft 1 and rotate counterclockwise together, descend thereby drive weight through transmissions at different levels; (ratchet device 4 can't rotate counterclockwise, but because the ratchet movable set of ratchet device 4 on brake disc 3, thereby can keep motionless its this moment, and left-hand revolution is carried out in rotating shaft 1 smoothly)
Motor carries out the lifting operation: do clockwise rotating through main shaft drive transmission gear 2 when motor; In rotating shaft 1, move right simultaneously; When moving to low order end be, self and ratchet device 4 and brake disc 3 pressed to put firmly link together, owing to brake disc 3 and rotating shaft 1 link to each other through flat key; Thereby transmission gear 2 can drive rotating shaft 1 and clockwise rotate together, thereby weight is promoted; (ratchet device 4 is being done and can clockwise rotated smoothly)
The principle that surmounts braking: when the weight accidental falling, drive rotating shafts 1 by transmissions at different levels and do left-hand revolution, transmission gear 2 will move right self and ratchet device 4 and brake disc 3 pressed to put firmly and link together that (sense of motion for transmission gear 2 can be analyzed like this this moment; Because the relativism of motion, this moment, transmission gear 2 was motionless, and left-hand revolution is done in rotating shaft 1; Its movement effects and rotating shaft 1 are motionless, and transmission gear 2 is done along pointer direction rotation always, thereby can know according to the principle of above-mentioned " motor carries out the lifting operation ": transmission gear 2 will move right self is pressed to put with ratchet device 4 and brake disc 3 firmly and link together); Conveniently rotating shaft 1 will drive ratchet device 4 and carry out left-hand revolution; And ratchet device 4 since cooperating of ratchet and ratchet can't carry out left-hand revolution, thereby will make rotating shaft 1 to be rotated; Thereby guaranteed when the unexpected tenesmus of weight; Even under the situation that motor braking lost efficacy, overrunning brake also can be braked quickly, simultaneously; Owing to cooperate through multiple screw thread between transmission gear 2 and the rotating shaft 1; Thereby make braking distance reduce greatly, accelerated speed of response, more guaranteed the quick and safety performance of braking.
More than analyze and be merely a certain concrete application mode, technical personnel is according to the principle of the utility model, and the relevant design that the hand of rotation of double thread trend, ratchet device is made change is all within the protection domain of the utility model.
Claims (2)
1. overrunning brake; Said drg is set in the rotating shaft (1) in the electric block drop-gear box; It is characterized in that: said transmission gear (2) is spun in the rotating shaft (1) through multiple screw thread; Be set with brake disc (3) in the said rotating shaft (1); Said brake disc (3) is by sleeve (3.1) and be arranged at ring flange (3.2) formation on the sleeve (3.1); Be movably installed with a ratchet device (4) on the said sleeve (3.1), the ratchet left and right sides face of said ratchet device (4) is provided with friction lining (5), utilizes friction force that transmission gear (2), ratchet device (4) and brake disc (3) are pressed to put through friction lining (5) when said transmission gear (2) moves right to low order end along screw thread rotation and links together.
2. a kind of according to claim 1 overrunning brake is characterized in that: said ratchet device (4) and friction lining (5) constitute an all-in-one-piece ratchet friction disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120229628U CN202131043U (en) | 2011-07-01 | 2011-07-01 | Superior brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120229628U CN202131043U (en) | 2011-07-01 | 2011-07-01 | Superior brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202131043U true CN202131043U (en) | 2012-02-01 |
Family
ID=45519820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120229628U Expired - Fee Related CN202131043U (en) | 2011-07-01 | 2011-07-01 | Superior brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202131043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838048A (en) * | 2012-09-08 | 2012-12-26 | 江阴市鼎力起重机械有限公司 | Metallurgical loop chain electric gourd |
-
2011
- 2011-07-01 CN CN201120229628U patent/CN202131043U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838048A (en) * | 2012-09-08 | 2012-12-26 | 江阴市鼎力起重机械有限公司 | Metallurgical loop chain electric gourd |
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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: 20120201 Termination date: 20160701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |