CN102032294B - Spiral load brake - Google Patents
Spiral load brake Download PDFInfo
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- CN102032294B CN102032294B CN200910179628A CN200910179628A CN102032294B CN 102032294 B CN102032294 B CN 102032294B CN 200910179628 A CN200910179628 A CN 200910179628A CN 200910179628 A CN200910179628 A CN 200910179628A CN 102032294 B CN102032294 B CN 102032294B
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- ratchet
- friction disk
- transmission shaft
- bearing
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Abstract
The invention discloses a spiral load brake and relates to the field of hoisting and transporting machines. The spiral load brake comprises a machine body, a driving friction disk, a transmission shaft, a ratchet wheel, a pawl, two friction plates, a driven friction disk, a bearing, a resistance ring, a thumb wheel, a pawl return spring, a pawl limiting seat and an adjusting nut. The driving friction disk is assembled on a multi-head external thread of the transmission shaft; the driven friction disk and the transmission shaft are connected together; the ratchet wheel is mounted on the transmission shaft and between the driving friction disk and the driven friction disk, a bearing is assembled between the ratchet wheel and the transmission shaft, and the ratchet wheel is free sheathed on a housing of the bearing;and the two friction plates are respectively arranged on two sides of the ratchet wheel between the driving friction disk and the driven friction disk; the pawl is hinged with the machine body; the thumb wheel is mounted on the transmission shaft through the bearing, the resistance ring and the driven friction disk; the pawl return spring is clamped on the pawl; the pawl limiting seat is mounted on the machine body; and the adjusting nut is mounted on one side on the transmission shaft in which the driving friction disk is located. The spiral load brake has the advantages of energy conservation, high efficiency, good braking property and safety in use, and can be widely applied in the hoisting and transporting machines.
Description
Technical field
A kind of spiral load-carrying break relates to lifting, Transport Machinery, is widely used in the field such as transmission, braking system of lifting, Transport Machinery.
Background technique
At present, domestic transmission, the braking system that is used for lifting, Transport Machinery is several kinds of forms below adopting: the one, do not possess the motor or the supporting electromagnetic brake of the transmission device supporting belt break of auto-lock function; The 2nd, do not possess the supporting manual brake of transmission device of auto-lock function; The 3rd, the worm gears of ability self-locking; The 4th, the thread brake that chain block and hand-operated winch are supporting.First kind of form is bulky, complex structure, involve great expense, easy break-down, and can only use in the place of electronic operation, do not adopt the place of motor-driven operation then can not use for there being electricity, the field of employment is restricted; Second kind of formal operations inconvenience, especially load-carrying decline is difficult to control in lifting work, and accident susceptibility has potential safety hazard; The third form transmission efficiency is low excessively; Like a pair of ordinary gear transmission efficiency more than 98%; But Efficiency of Worm Gearing that can self-locking is less than 50%, and the power of worm drive mating power that therefore can self-locking generally is 2 times of equal load gear transmission mating power power or bigger; Between the 4th kind of form ratchet and the ratchet, between ratchet and friction plate and the transmission shaft in transmission surface of contact produce dry friction, the transmission shaft rotating speed is restricted, only limits at present use in chain block and the hand-operated winch; If this form is directly applied in the transmission, braking system of lifting, the Transport Machinery of mechanical, electrical drive operation; Running speed is high relatively between ratchet and the ratchet, between ratchet and friction plate and the transmission shaft; And the oiling agent of on the surface of contact between ratchet and the ratchet, between ratchet and friction plate and the transmission shaft, can not annotating (the filling oiling agent can cause braking failure); Certainly will cause the surface of contact of ratchet and ratchet, ratchet and transmission shaft to be worn very soon; Thereby cause the damage of braking system and can't use; And ratchet, ratchet friction noise are big, and therefore, this form incompatibility is used in the transmission of the lifting of mechanical, electrical drive operation and Transport Machinery, braking system.
In order to overcome the deficiency of above several kinds of transmissions, braking model, I design a kind of easy to manufacture, with low cost, compact structure, superior performance, am widely used, efficient energy-saving, can Braking mode spiral load-carrying break, the spy does following invention.
Summary of the invention
The present invention will provide a kind of spiral load-carrying break of being made up of body, active friction disk, transmission shaft, ratchet, ratchet, friction plate, driven friction disk, bearing, resistance circle, thumb wheel, ratchet return spring, ratchet position limit socket, adjustment nut.
The scheme that solves technical problem of the present invention is: spiral load-carrying break is made up of body, active friction disk, transmission shaft, ratchet, ratchet, friction plate, driven friction disk, bearing, resistance circle, thumb wheel, ratchet return spring, ratchet position limit socket, adjustment nut.Initiatively the endoporus of friction disk is processed multiple-internal screw thread, and one section of transmission shaft is shaped on the bull outside thread, and initiatively friction disk is assemblied on the bull outside thread of transmission shaft, can move flexibly vertically when initiatively friction disk rotates on transmission shaft; Driven friction disk is connected (comprising that key connects, is threaded) together with transmission shaft; Ratchet is installed on the transmission shaft initiatively between the friction disk and driven friction disk, is equipped with bearing between ratchet and the transmission shaft, and the ratchet sky is enclosed within on the shell of bearing; Friction plate is divided into two; Its assembling form has two kinds; First kind is the both sides that two friction plates are contained in ratchet between active friction disk and the driven friction disk respectively; Be enclosed within on the shell of same bearing with ratchet is empty in the lump, second kind is that two friction plates are separately fixed at initiatively on friction disk, driven friction disk and the side that ratchet adjoins mutually; Be shaped on the pusher dog (comprise and getting a tooth pulled out) that can supply thumb wheel to stir on the ratchet, ratchet and body hinge, an end of ratchet engages with ratchet, and ratchet engages with ratchet and can limit ratchet and can only rotate towards direction, oppositely is prevented from; Be shaped on pusher dog (comprise and getting a tooth pulled out) on the thumb wheel; Thumb wheel is assemblied on the transmission shaft through bearing, resistance circle, driven friction disk, and thumb wheel relies on the function of friction of resistance circle generation to stir on the ratchet with transmission shaft, when driven friction disk rotates pusher dog can make ratchet break away from, again the ratchet return is engaged with ratchet with ratchet; Ratchet return spring and body hinge also are stuck on the ratchet, and the ratchet return spring can assist thumb wheel that the ratchet return is engaged with ratchet; The ratchet position limit socket is installed on the body, and the ratchet position limit socket can limit the disengaging distance of ratchet and ratchet; The adjustment nut is installed on the transmission shaft through being threaded, and the opposite side of the active friction disk of a side is adjoined mutually at active friction disk and ratchet in the position, the size in the clutch gap of adjustment nut may command active friction disk and ratchet, friction plate, driven friction disk; Initiatively friction disk, transmission shaft, ratchet, ratchet, friction plate, driven friction disk, bearing, resistance circle, thumb wheel, ratchet return spring, ratchet position limit socket, adjustment nut are assembled on the body.
When spiral load-carrying break is used in driving mechanism (except the worm gearing of ability self-locking); Be installed on the transmission shaft of driving mechanism; With the coaxial coenosarc of driving mechanism; It initiatively is combined with drive wheel (comprising belt wheel, gear, sprocket wheel) on the friction disk, and power drives the work of spiral load-carrying break through drive wheel.The active friction disk of spiral load-carrying break and the combination of drive wheel have two kinds: the one, the active friction disk and the drive wheel of spiral load-carrying break are processed one; The 2nd, the active friction disk and the drive wheel of spiral load-carrying break is fixed together through link, form an assemblying body.
Their combination is: initiatively friction disk is assemblied on the bull outside thread of transmission shaft; Driven friction disk and transmission shaft link together; Ratchet is installed on the transmission shaft initiatively between the friction disk and driven friction disk, is equipped with bearing between ratchet and the transmission shaft, and the ratchet sky is enclosed within on the shell of bearing; Friction plate is divided into two, is contained on the transmission shaft the initiatively both sides of ratchet between the friction disk and driven friction disk respectively; Ratchet and body hinge, an end of ratchet engages with ratchet; Thumb wheel is assemblied on the transmission shaft through bearing, resistance circle, driven friction disk; Ratchet return spring and body hinge also are stuck on the ratchet; The ratchet position limit socket is installed on the body; The adjustment nut is installed on the transmission shaft through being threaded, and the position is adjoined the opposite side of the active friction disk of a side mutually at active friction disk and ratchet; Initiatively friction disk, transmission shaft, ratchet, ratchet, friction plate, driven friction disk, bearing, resistance circle, thumb wheel, ratchet return spring, ratchet position limit socket, adjustment nut are assembled on the body.
The friction plate of spiral load-carrying break has two kinds at the assembling form on the transmission shaft: first kind is the both sides that two friction plates of spiral load-carrying break are contained in ratchet between active friction disk and the driven friction disk respectively, is enclosed within on the shell of same bearing with ratchet is empty in the lump; Second kind is that two friction plates with spiral load-carrying break are separately fixed at initiatively on friction disk, driven friction disk and the side that ratchet adjoins mutually.
The active friction disk of spiral load-carrying break and the combination of drive wheel have two kinds: the one, the active friction disk and the drive wheel of spiral load-carrying break are processed one; The 2nd, the active friction disk and the drive wheel of spiral load-carrying break is fixed together through link, form an assemblying body.
When weight is raised in lifting work; Power drives initiatively through drive wheel, and friction disk just changes (the active friction disk turns to just changeing when setting the weight rising); Initiatively friction disk moment moves axially and compresses ratchet, friction plate, driven friction disk, and impacting force is relevant with the size of load, and load is big more; Impacting force is big more, and active friction disk after compressing and ratchet, friction plate, driven friction disk, transmission shaft tightly lock together and be static relatively.Meanwhile; Thumb wheel rotates with transmission shaft, driven friction disk and under the function of friction that the resistance circle produces, stirs ratchet and ratchet disengaging, and when ratchet contacted with the ratchet position limit socket, ratchet reached stop (this moment, ratchet and ratchet broke away from fully); Thumb wheel stops operating; Transmission shaft dallies through bearing and thumb wheel, because thumb wheel is stirred ratchet and ratchet breaks away from, and the dry friction of therefore having avoided ratchet and ratchet in transmission process, to produce; Eliminate noise, greatly reduced the wearing and tearing of ratchet and ratchet surface of contact.When in the middle of weight is raised, cutting off power; Initiatively friction disk stall, this moment, the reaction force of load forced the transmission shaft counter-rotating, because this moment, initiatively friction disk, transmission shaft, ratchet, friction plate, driven friction disk tightly locked together; When transmission shaft reverses; Initiatively friction disk, ratchet, friction plate, driven friction disk, thumb wheel reverse thereupon, ratchet under the effect of thumb wheel and ratchet return spring immediately return engages with ratchet, ratchet blocks ratchet prevention ratchet and reverses; Ratchet relies on function of friction to stop counter-rotating and the Braking mode of transmission shaft, and weight can aloft stop.
When weight stops intermediate demand aloft when falling, make power drive initiatively friction disk counter-rotating, initiatively friction disk moment moves axially and unclamps ratchet, friction plate, driven friction disk and press to the adjustment nut, the separated immediately attitude of ratchet, friction plate.Though this moment, ratchet was blocked by ratchet, ratchet transmission shaft idle running relatively can not stop the transmission shaft counter-rotating, and weight can fall under the double action of power and self gravitation.Owing to be equipped with bearing between ratchet and the transmission shaft, during the transmission shaft counter-rotating, through the bearing transmission, therefore, avoided dry friction between ratchet and the transmission shaft between ratchet and the transmission shaft, improved the working life of ratchet and transmission shaft greatly.When in the middle of weight falls, cutting off power; Initiatively friction disk stall; This moment, the reaction force of load forced transmission shaft to continue counter-rotating, and initiatively friction disk moment moves axially and compresses ratchet, friction plate, driven friction disk, and initiatively friction disk, transmission shaft, ratchet, friction plate, driven friction disk tightly lock together immediately; Because this moment, ratchet and ratchet were jointing state; Ratchet blocks ratchet and stops the ratchet counter-rotating, and the effect of ratchet frictionally has stoped counter-rotating and the Braking mode of transmission shaft, and weight can aloft stop.
Its beneficial effect is: the present invention has overcome that electromagnetic brake is bulky, complex structure, involve great expense, the restricted defective in field of employment; Overcome the defective that manual brake is operated inconvenience, accident susceptibility, potential safety hazard is arranged, overcome the defective that the power consumption of irreversible worm transmission device is big, transmission efficiency is low excessively; Particularly the present invention is through being equipped with bearing between ratchet and transmission shaft; Avoided dry friction between ratchet and the transmission shaft, improved the working life of ratchet and transmission shaft greatly, through the assembling thumb wheel; During lifting; Thumb wheel is stirred ratchet and is broken away from ratchet, has avoided the dry friction between ratchet and the ratchet, has eliminated noise; Greatly reduce the wearing and tearing of ratchet and ratchet surface of contact, fundamentally solved the contradiction that the thread brake incompatibility is used in the lifting of mechanical, electrical drive operation, Transport Machinery transmission, braking system; Have same self-locking effect with the irreversible worm transmission device, and transmission efficiency is more than the twice of irreversible worm transmission device.
Be characterized in: the present invention is reasonable in design, easy to manufacture, with low cost, compact structure, efficient energy-saving, operation and maintenance convenient, good, safe and reliable, the applied range of braking ability.
Description of drawings
Accompanying drawing is a kind of structural representation of the present invention, among the figure 1, and friction disk initiatively; 2, transmission shaft; 3, friction plate; 4, ratchet; 5, friction plate; 6, bearing; 7, driven friction disk; 8, thumb wheel; 9, body; 10, bearing; 11, the resistance circle; 12, ratchet; 13, the ratchet position limit socket; 14, the ratchet return spring; 15, the adjustment nut.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
When weight is raised in lifting work; Power drives initiatively through drive wheel, and friction disk 1 is just changeing (active friction disk 1 turns to just changeing when setting the weight rising); Initiatively 1 moment of friction disk moves axially pressing friction sheet 3, ratchet 4, friction plate 5, driven friction disk 7, and impacting force is relevant with the size of load, and load is big more; Impacting force is big more, and the active friction disk 1 after compressing tightly locks together with friction plate 3, ratchet 4, friction plate 5, driven friction disk 7, transmission shaft 2 and be static relatively.Meanwhile; Thumb wheel 8 rotates with transmission shaft 2, driven friction disk 7 and under the function of friction that resistance circle 11 produces, stirs ratchet 12 and ratchet 4 disengagings, and when ratchet 12 contacted with ratchet position limit socket 13, ratchet 12 reached stop (this moment, ratchet and ratchet broke away from fully); Thumb wheel 8 stops operating; Transmission shaft 2 dallies through bearing 10 and thumb wheel 8, breaks away from the dry friction of therefore having avoided ratchet 12 and ratchet 4 in transmission process, to produce with ratchet 4 because thumb wheel 8 is stirred ratchet 12; Eliminate noise, greatly reduced the wearing and tearing of ratchet 12 and ratchet 4 surface of contact.When in the middle of weight is raised, cutting off power; Initiatively friction disk 1 stall, this moment, the reaction force of load forced transmission shaft 2 counter-rotatings, because initiatively friction disk 1, transmission shaft 2, friction plate 3, ratchet 4, friction plate 5, driven friction disk 7 tightly lock together; When transmission shaft 2 counter-rotatings; Initiatively friction disk 1, friction plate 3, ratchet 4, friction plate 5, driven friction disk 7, thumb wheel 8 reverses thereupon, ratchet 12 under the effect of thumb wheel 8 and ratchet return spring 14 immediately return engage with ratchet 4, ratchet 12 blocks ratchet 4 prevention ratchets 4 and reverses; The effect of ratchet 4 frictionallies has stoped counter-rotating and the Braking mode of transmission shaft 2, and weight can aloft stop.
When weight stops the intermediate demand whereabouts aloft; Make power drive initiatively friction disk 1 counter-rotating; Initiatively 1 moment of friction disk moves axially and unclamps friction plate 3, ratchet 4, friction plate 5, driven friction disk 7 and press to adjustment nut 15, friction plate 3, ratchet 4, the separated immediately attitude of friction plate 5.Initiatively friction disk 1 drives transmission shaft 2 counter-rotatings, though this moment, ratchet 4 was blocked by ratchet 12, ratchet 4 transmission shaft 2 idle running relatively can not stop transmission shaft 2 counter-rotatings, and weight can fall under the double action of power and self gravitation.Owing to be equipped with bearing 6 between ratchet 4 and the transmission shaft 2, during transmission shaft 2 counter-rotatings, through bearing 6 transmissions, therefore, avoided dry friction between ratchet 4 and the transmission shaft 2 between ratchet 4 and the transmission shaft 2, improved the working life of ratchet 4 and transmission shaft 2 greatly.When in the middle of weight falls, cutting off power; Initiatively friction disk 1 stall; This moment, the reaction force of load forced transmission shaft 2 to continue counter-rotating, and initiatively 1 moment of friction disk moves axially pressing friction sheet 3, ratchet 4, friction plate 5, driven friction disk 7, and initiatively friction disk 1, transmission shaft 2, friction plate 3, ratchet 4, friction plate 5, driven friction disk 7 tightly lock together immediately; Because this moment, ratchet 12 was a jointing state with ratchet 4; Ratchet 12 blocks ratchet 4 and stops ratchets 4 counter-rotatings, and the effect of ratchet 4 frictionallies has stoped continuation counter-rotating and the Braking mode of transmission shaft 2, and weight can aloft stop.
Claims (5)
1. a spiral load-carrying break is characterized in that: be made up of body, active friction disk, transmission shaft, ratchet, ratchet, friction plate, driven friction disk, bearing, resistance circle, thumb wheel, ratchet return spring, ratchet position limit socket, adjustment nut; Initiatively the endoporus of friction disk is processed multiple-internal screw thread, and one section of transmission shaft is shaped on the bull outside thread, and initiatively friction disk is assemblied on the bull outside thread of transmission shaft; Driven friction disk and transmission shaft link together; Ratchet is installed on the transmission shaft initiatively between the friction disk and driven friction disk, is equipped with bearing between ratchet and the transmission shaft, and the ratchet sky is enclosed within on the shell of bearing; Friction plate is divided into two, is contained in the both sides of ratchet between active friction disk and the driven friction disk respectively; Be shaped on the pusher dog that can supply thumb wheel to stir on the ratchet, an end and the body of ratchet constitutes a hinge the other end and engages with ratchet; Be shaped on pusher dog on the thumb wheel, thumb wheel is assemblied on the transmission shaft through bearing, resistance circle, driven friction disk; One end of ratchet return spring and body constitute a hinge the other end and are stuck on the ratchet; The ratchet position limit socket is installed on the body; The adjustment nut is installed on the transmission shaft through being threaded, and the position is adjoined the opposite side of the active friction disk of a side mutually at active friction disk and ratchet; Initiatively friction disk, transmission shaft, ratchet, ratchet, friction plate, driven friction disk, bearing, resistance circle, thumb wheel, ratchet return spring, ratchet position limit socket, adjustment nut are assembled on the body.
2. spiral load-carrying break according to claim 1 is characterized in that: two friction plates of spiral load-carrying break are contained in the initiatively both sides of ratchet between the friction disk and driven friction disk respectively, are enclosed within on the same bearing shell with ratchet is empty in the lump.
3. spiral load-carrying break according to claim 1 is characterized in that: two friction plates of spiral load-carrying break are separately fixed on friction disk initiatively, driven friction disk and the side that ratchet adjoins mutually.
4. spiral load-carrying break according to claim 1 is characterized in that: the active friction disk of spiral load-carrying break and drive wheel are processed one.
5. spiral load-carrying break according to claim 1 is characterized in that: the active friction disk and the drive wheel of spiral load-carrying break are fixed together through link, form an assemblying body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910179628A CN102032294B (en) | 2009-10-08 | 2009-10-08 | Spiral load brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910179628A CN102032294B (en) | 2009-10-08 | 2009-10-08 | Spiral load brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102032294A CN102032294A (en) | 2011-04-27 |
| CN102032294B true CN102032294B (en) | 2012-10-03 |
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ID=43885593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910179628A Expired - Fee Related CN102032294B (en) | 2009-10-08 | 2009-10-08 | Spiral load brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102032294B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157906B (en) * | 2011-05-17 | 2014-03-19 | 江苏省电力公司常州供电公司 | Clamping device of handcart breaker equipment maintenance car |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100996A (en) * | 1993-09-29 | 1995-04-05 | 林德股份公司 | Hub driving apparatus |
| CN101021236A (en) * | 2006-02-16 | 2007-08-22 | 张恩 | Friction roller type controllable sliding oil-saving clutch |
-
2009
- 2009-10-08 CN CN200910179628A patent/CN102032294B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100996A (en) * | 1993-09-29 | 1995-04-05 | 林德股份公司 | Hub driving apparatus |
| CN101021236A (en) * | 2006-02-16 | 2007-08-22 | 张恩 | Friction roller type controllable sliding oil-saving clutch |
Non-Patent Citations (1)
| Title |
|---|
| JP昭58-207537A 1983.12.03 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102032294A (en) | 2011-04-27 |
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