CN207175322U - A kind of brake apparatus of air hoist - Google Patents
A kind of brake apparatus of air hoist Download PDFInfo
- Publication number
- CN207175322U CN207175322U CN201720995062.XU CN201720995062U CN207175322U CN 207175322 U CN207175322 U CN 207175322U CN 201720995062 U CN201720995062 U CN 201720995062U CN 207175322 U CN207175322 U CN 207175322U
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- brake
- air hoist
- shoe
- rotor
- cam
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Abstract
A kind of brake apparatus of air hoist is the utility model is related to, belongs to lifting appliance field.Including internal detent and outer brake, the internal detent uses the pneumatic vane motor with braking function, it is made up of housing, stator, rotor, end cap and briquetting, the outer brake uses drum brake, it is made up of cam, brake lever, brake-shoe, brake(-holder) block, back-moving spring and brake drum, braking function is realized to the power transmission shaft of air hoist respectively with outside by internal；The utility model effectively solves the phenomenon that existing air hoist brake stops back loading downhill race by internal and outside Associated brake.
Description
Technical field
It the utility model is related to lifting appliance field, more particularly to a kind of brake apparatus of air hoist.
Background technology
All trades and professions are widely used in as hoisting machinery recently as air hoist, because it relies on powerful performance
Advantage, status of the electric block in production and construction is progressively instead of, received the consistent favorable comment of client, therefore in the market
Various air hoist emerges in large numbers like the mushrooms after rain, causes that air hoist is excessively gone in for grandiose projects and quality can not ensure.
Air hoist will not only meet basic elevating function in use, and be hanged sometimes for air hoist
Hang weight spot hover in the air, but the imperfection of the brakes due to air hoist, weight often occur during hovering dashes forward
So decline a segment distance, it is impossible to rapid braking, may so bring potential safety hazard to the operating personnel below weight.
Utility model content
The problem of for shortcomings and deficiencies in the prior art, the utility model proposes a kind of braking of air hoist dress
Put, by internal and outside Associated brake, effectively solve the phenomenon that existing air hoist brake stops back loading downhill race.
Technical scheme is used by the utility model solves its technical problem：
A kind of brake apparatus of air hoist, including internal detent and outer brake, the internal detent, which uses, has system
The pneumatic vane motor of dynamic function, is made up of, the housing is arranged on by bearing housing, stator, rotor, end cap and briquetting
On the power transmission shaft of air hoist, stator and rotor are located in housing, and briquetting is provided with shell nozzle, is sealed by end cap, turn
Son is connected with power transmission shaft；The outer brake uses drum brake, by cam, brake lever, brake-shoe, brake(-holder) block, reset bullet
Spring and brake drum composition, the brake-shoe include left and right two pieces, and one end is fixed on brake drum by supporting pin respectively, internal
Brake(-holder) block is inlayed, brake(-holder) block presses close to power transmission shaft, back-moving spring is also equipped with brake-shoe, the brake lever is connected with cam, convex
Wheel is connected with the brake-shoe other end.
Further, the bore of stator both ends are respectively equipped with fixed brake lining and movable rubbing surface, movable rubbing surface with
Briquetting is provided between end cap, movable rubbing surface is adjacent with rotor.
Further, the rotor is provided with groove, and slidable blade is provided with groove.
Further, the end cap is provided with adjusting screw, and adjusting screw is connected with the pressure spring on briquetting.
Further, brake governor is installed between the brake-shoe and cam.
The utility model has the advantages that：The utility model is simple in construction, and braking is sensitive, using with braking work
The vane type motor and drum brake of energy, double brake can be achieved；By internal detent air motor can be realized in inoperative
On-position is remained under pressure, ensures the security of its work；Brake governor is set, in the feelings that brake(-holder) block wears
Under condition, the normal use of outer brake can be ensured by adjusting the gap between brake-shoe and power transmission shaft.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model internal detent structural representation.
Embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
As shown in the figure：A kind of brake apparatus of air hoist, including internal detent 1 and outer brake 2, the internal detent
1 uses the pneumatic vane motor with braking function, is made up of housing 21, stator 22, rotor 23, end cap 24 and briquetting 25,
The housing 21 is arranged on by bearing on the power transmission shaft 3 of air hoist, and stator 22 and rotor 23 are located in housing 21, housing 21
Opening is provided with briquetting 25, is sealed by end cap 24, and rotor 23 is connected with power transmission shaft 3；The outer brake 2 uses drum-type system
Dynamic device, is made up of, the brake-shoe cam 11, brake lever 12, brake-shoe 13, brake(-holder) block 14, back-moving spring 15 and brake drum 16
13 include left and right two pieces, and one end is fixed on brake drum 16 by supporting pin respectively, and brake(-holder) block 14, brake(-holder) block 14 are inlayed in inside
Press close to power transmission shaft 3, back-moving spring 15 is also equipped with brake-shoe 13, the brake lever 12 is connected with cam 11, cam 11 and system
The dynamic other end of hoof 13 is connected.
The inner chamber both ends of stator 22 are provided with rubbing surface, are simultaneously stator for the movable rubbing surface 41 of stator 22, another side
When 22 fixation brake lining 42, the air motor are not actuated, stator 22 is changed by the adjusting screw 61 on end cap 24
Becoming the pressure of pressure spring 62, the pressure spring 62 reaches certain pretightning force, and fixed brake lining 41 remains stationary as, so that
Movable rubbing surface 42 extrudes rotor 23, and the both sides of rotor 23 will form brake force, and then air motor is in often braking shape
State；During work, further raised with the pressure of motor air inlet, the gas pressure in the cavity of stator 22 overcomes pressure regulation bullet
The pretightning force of spring 62, the pressure spring 62 are compressed, and movable rubbing surface 42 is opened on the top of briquetting 25, and rotor 23 starts to rotate, institute
State and blade 51 is installed in the groove of rotor 23, the blade 51 can be in groove slidably, and can be with the high-speed motion of rotor 23；When
When pressure in the cavity of stator 22 is less than the pretightning force of spring 62, the movable rubbing surface 42 brake motor again, protect
Demonstrate,prove air motor and remain on-position under non-operating pressure.
When air motor enters gases at high pressure, rotor 23 rotates, and the power transmission shaft 3 being connected with rotor 23 rotates
When, the cam 11 of outer brake also concomitant rotation, during brake, left and right brake-shoe 13 is embedded on brake-shoe 13 to contract
Severe friction occurs for friction brake wafer 14 and the surface of power transmission shaft 3 of rotation at a high speed, forces the power transmission shaft 3 in rotation gradually to slow down straight
To stopping operating, and then the purpose of skidding.Brake governor 31 is additionally provided between the brake-shoe 13 and cam 11,
Brake governor 31 can adjust the gap between brake-shoe 13 and power transmission shaft 3, can make brake-shoe 13 and transmission to greatest extent
Axle 3 so can both reduce the impulse stroke of brake-shoe 13 close to without contacting, and and can enough ensures the quick system of brake apparatus
It is dynamic.But with the abrasion of brake strip 14, the space between brake-shoe 13 and power transmission shaft 3 can be increasing, can pass through tune
Brake lever 12 is saved, makes one segment distance of advance of brake governor 31, accordingly even when brake(-holder) block 14 wears, remains to make brake-shoe 13
The distance between power transmission shaft 3 keeps constant, can be again multiple by brake-shoe 13 by back-moving spring 15 when releasing braking
Position.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.This reality
It is not restricted to the described embodiments with new, simply illustrates original of the present utility model described in above-described embodiment and specification
Reason, the utility model also has various changes and modifications on the premise of the spirit and scope of the utility model is not departed from, these changes
Change and improve and both fall within claimed the scope of the utility model.The utility model requires protection scope is by appended right
Claim and its equivalent define.
Claims (5)
- A kind of 1. brake apparatus of air hoist, it is characterised in that：Including internal detent and outer brake, the internal detent is adopted With the pneumatic vane motor with braking function, it is made up of housing, stator, rotor, end cap and briquetting, the housing passes through axle Hold on the power transmission shaft of air hoist, stator and rotor are located in housing, and briquetting is provided with shell nozzle, passes through end cap Seal, rotor is connected with power transmission shaft；The outer brake uses drum brake, by cam, brake lever, brake-shoe, brake(-holder) block, Back-moving spring and brake drum composition, the brake-shoe include left and right two pieces, and one end is fixed on brake drum by supporting pin respectively On, brake(-holder) block is inlayed in inside, and brake(-holder) block presses close to power transmission shaft, and back-moving spring, the brake lever and cam are also equipped with brake-shoe It is connected, cam is connected with the brake-shoe other end.
- A kind of 2. brake apparatus of air hoist according to claim 1, it is characterised in that：The bore of stator both ends point Brake lining and movable rubbing surface She You not be fixed, briquetting, movable rubbing surface and rotor phase are provided between movable rubbing surface and end cap It is adjacent.
- A kind of 3. brake apparatus of air hoist according to claim 1, it is characterised in that：The rotor is provided with groove, Slidable blade is provided with groove.
- A kind of 4. brake apparatus of air hoist according to claim 1, it is characterised in that：The end cap is provided with regulation Screw, adjusting screw are connected with the pressure spring on briquetting.
- A kind of 5. brake apparatus of air hoist according to claim 1, it is characterised in that：The brake-shoe and cam it Between brake governor is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995062.XU CN207175322U (en) | 2017-08-10 | 2017-08-10 | A kind of brake apparatus of air hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995062.XU CN207175322U (en) | 2017-08-10 | 2017-08-10 | A kind of brake apparatus of air hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207175322U true CN207175322U (en) | 2018-04-03 |
Family
ID=61744402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720995062.XU Active CN207175322U (en) | 2017-08-10 | 2017-08-10 | A kind of brake apparatus of air hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207175322U (en) |
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2017
- 2017-08-10 CN CN201720995062.XU patent/CN207175322U/en active Active
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