CN203404297U - Braking load-limiting coupler with forward and backward spiral sleeve - Google Patents
Braking load-limiting coupler with forward and backward spiral sleeve Download PDFInfo
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- CN203404297U CN203404297U CN201320466793.7U CN201320466793U CN203404297U CN 203404297 U CN203404297 U CN 203404297U CN 201320466793 U CN201320466793 U CN 201320466793U CN 203404297 U CN203404297 U CN 203404297U
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- spiral
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- brake disc
- braking
- coupler body
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Abstract
The utility model relates to a braking load-limiting coupler with a forward and backward spiral sleeve. After a certain rotation speed is input into a driving coupler body, the forward and backward internal and external spiral sleeve and an internal spiral brake disc produce moment of momentum through rotational inertia of the forward and backward internal and external spiral sleeve and the internal spiral brake disc, and the forward and backward internal and external spiral sleeve and the internal spiral brake disc produce angular displacement relative to the driving coupler body due to the moment of momentum and braking torque produced by a braking state; the internal spiral brake disc produces axial displacement towards the main direction of a power input shaft in the axial direction to compress a brake spring, and then braking can be relieved. The driving coupler body is meshed with a driven coupler body through spiral tooth surfaces. When a machine is started, the spiral tooth surface of the driving coupler body is meshed with the spiral tooth surface of the driven coupler body, braking can also be relieved when load is specific, and the function of the coupler can be achieved. When overload occurs, the spiral tooth surface of the driving coupler body is completely disengaged from the spiral tooth surface of the driven coupler body, and the effect of protecting the working machine when overload occurs is achieved. When the driving coupler body loses power, friction is generated between a brake block and the internal spiral brake disc, friction is also generated between the brake block and a brake disc of the driven coupler body, and accordingly braking is realized.
Description
Technical field
The utility model relates to a kind of braking load-limiting coupler with forward-reverse spiral cover.
Background technique
Existing braking load-limiting coupler has the function of coupling, load limiter and break; can reach the driven off by shaft effect of connection; machine can be protected machine when overload; also can brake because of stopping of machine at once; during in load, little and lifting mechanism is applied; braking can not be removed, and can cause the whole heating of braking load-limiting coupler, and therefore existing braking load-limiting coupler application area is very restricted.
Summary of the invention
The purpose of this utility model: design the braking load-limiting coupler of a kind of existing shaft coupling, limit for tonnage and braking function, and have or the application of non-loaded and lifting mechanism in, braking is all easy to remove, and makes up the deficiency of existing braking load-limiting coupler.
The utility model solves the technological scheme that its technical problem adopts:
The rotation direction that the multi-thread external spiral that there is no self-locking performance that initiatively coupling outer surface rotation direction is dextrorotation overlaps with positive and negative internal and external screw is dextrorotation does not have the multi-thread internal spiral of self-locking performance to be slidably matched to connect, the rotation direction of positive and negative internal and external screw cover be derotation there is no the multi-thread external spiral of self-locking performance and the rotation direction of internal spiral brake disc be that derotation does not have the multi-thread internal spiral of self-locking performance to be slidably matched to connect, limit internal spiral brake disc and only do unidirectional movement as reference axially take active coupling.Wherein, initiatively on coupling, there is a ring-shaped step; Positive and negative internal and external screw has put a ring-shaped step; On internal spiral brake disc, there is a seam.
Initiatively coupling is inputted after certain rotating speed, reason due to the rotary inertia of positive and negative internal and external screw cover and internal spiral brake disc self, the raw moment of momentum of necessity real estate, the moment of momentum adds that the braking moment of braking state impels positive and negative internal and external screw cover active relative to internal spiral brake disc coupling along positive and negative multi-thread rectangular coil generation angular displacement, produce certain axial force, and sense of rotation no matter, internal spiral brake disc is all main to producing axial displacement to power input shaft vertically, further compression brake spring, realizes the object of brake off.
Driven coupling is the coupling being fixed on driven shaft, initiatively coupling is arranged on driving shaft and (is referred generally to motor shaft) by splined shaft, brake shoe carrier is stuck on large support, there is vertically a certain amount of displacement, can not produce angular displacement, the mode that brake shoe carrier two sides connects by gummed is glued to brake shoe carrier two sides, is arranged on vertically between internal spiral brake disc and driven coupling brake disc.
Initiatively coupling and driven coupling are owing to adopting helical tooth flank engagement to connect, when machine start, initiatively coupling and the engagement of driven coupling helical tooth flank, after engagement, produce axial force, when the axial force producing has exceeded the axial pressure of brake spring, initiatively coupling moves to flank of tooth rear vertically, drive lower spring cup to move afterwards together, in the situation that load is certain, also can have eliminated and add the pressure being pressed on braking plate, removed braking, brought into play the function of coupling, when load exceeds the load of setting, initiatively coupling and driven coupling helical tooth flank have been thrown off.During overload; broken with brake spring and pressed equilibrium of forces; in order to reach with brake spring, press equilibrium of forces; initiatively coupling only has vertically to the further compression brake spring in active coupling rear; until active coupling and driven coupling helical tooth flank are thrown off completely, played the effect of overload protection working machine.When active coupling runs out of steam, the energy storing when brake spring is compressed discharges immediately, when brake spring, plane bearing, internal spiral brake disc and the braking plate that promotes to pressurize on lower spring cup produces friction, braking plate and driven coupling internal spiral brake disc produce friction, have realized braking.
Upper end cap or lower end cap utilize seam on it to be fixed in the frame of working machine, upper end cap and lower end cap adopt bolt A and bolt B be connected in large support two ends.
The beneficial effects of the utility model are; the function that not only possesses coupling has again the function of break and load limiter simultaneously, has played to shut down and when braking immediately and transshipping, has protected working machine effect; in the application of very little in load of lifting mechanism, be easy to brake off.
Below in conjunction with Figure of description, the utility model is described in detail.
Accompanying drawing explanation
Accompanying drawing 1: with the braking load-limiting coupler overall structure figure of forward-reverse spiral cover.
Accompanying drawing 2: with internal spiral brake disc, positive and negative internal and external screw cover and active coupling assembly relation axonometric drawing in the braking load-limiting coupler of forward-reverse spiral cover.
Accompanying drawing 3: with in the braking load-limiting coupler of forward-reverse spiral cover initiatively during coupling forward with the location diagram of coupling, internal spiral brake disc, positive and negative internal and external screw cover initiatively.
Accompanying drawing 4: the location diagram overlapping with active coupling, internal spiral brake disc, positive and negative internal and external screw when initiatively coupling reverses in the braking load-limiting coupler overlapping with forward-reverse spiral.
Accompanying drawing 5: active coupling shape assumption diagram.
Accompanying drawing 6: positive and negative internal and external screw cover shape assumption diagram.
Accompanying drawing 7: internal spiral brake disc shape assumption diagram.
Accompanying drawing 8: driven coupling shape assumption diagram.
In accompanying drawing: 1-upper end cap, 2-sliding bearing sleeve 3-bolt A, 4-spring washer A, 5-upper spring seat positioning plate, 6-upper spring seat, 7-brake spring, 8-lower spring cup, 9-lower spring cup fixed plate, 10-plane bearing, 11-internal spiral brake disc, 12-large support, 13-driven coupling plane bearing, 14-rolling bearing, 15-shaft block ring, 16-driven coupling, 17-bolt B, 18-spring washer B, 19-lower end cap, 20-braking plate, 21-brake shoe carrier, 22-positive and negative internal and external screw cover, 23-active coupling.
Embodiment
Shown in Figure of description 1: driven coupling 16 is fixed on lower end cap 19 by driven coupling plane bearing 13, rolling bearing 14 and shaft block ring 15.
Shown in Figure of description 1: braking plate 20 adopts the mode of glueing joint to be glued to two end faces of brake shoe carrier 21.
Shown in Figure of description 1: internal spiral brake disc 11, plane bearing 10, lower spring cup fixed plate 9, lower spring cup 8, brake spring 7, upper spring seat 6 and upper spring seat positioning plate 5 are connected in series along shaft axis.
Shown in Figure of description 1: sliding bearing sleeve 2 interference fit are arranged on upper end cap 1.
Shown in Figure of description 1: upper end cap 1 is fixed on large support 12 by a plurality of bolt A3 and spring washer A4.
Shown in Figure of description 1: lower end cap 19 is fixed on large support 12 by a plurality of bolt B 17 and spring pad B18.
Shown in Figure of description 1: internal spiral brake disc 11 and driven coupling 16 go plate rack 21 to be clipped in the middle the braking plate 20 having gluedd joint and system.
Shown in Figure of description 2, Figure of description 3, Figure of description 4: positive and negative internal and external screw cover 22 all adopts multi-thread spiral to connect with active coupling 23 and internal spiral brake disc 11 respectively.
Shown in Figure of description 5: initiatively have a ring-shaped step on coupling 23.
Shown in Figure of description 5: active coupling 23 monodentate helicoid coupling.
Shown in Figure of description 6: a ring-shaped step on positive and negative internal and external screw cover 22.
Shown in Figure of description 7: have a seam on internal spiral brake disc 11.
Shown in Figure of description 8: driven coupling 16 is monodentate helicoid coupling.
Shown in Figure of description 5 and shown in Figure of description 8: driven coupling 16 and the initiatively parameter of coupling 23 monodentate helicoids match.
Shown in Figure of description 1: initiatively the parameter of the multi-thread internal spiral of the multi-thread external spiral on coupling 23 and positive and negative internal and external screw cover 22 matches.
Shown in Figure of description 1: the parameter of the multi-thread external spiral of positive and negative internal and external screw cover 22 and the multi-thread internal spiral of internal spiral brake disc 11 matches.
The working procedure of the braking load-limiting coupler overlapping with forward-reverse spiral: power source is from 23 inputs of active coupling, the initiatively engagement of the helical tooth flank of coupling 23 and the helical tooth flank of driven coupling 16, initiatively after the certain rotating speed of coupling 23 input, reason due to the rotary inertia of positive and negative internal and external screw cover 22 and internal spiral brake disc 11 self, the raw moment of momentum of necessity real estate, the moment of momentum adds that the braking moment of braking state impels positive and negative internal and external screw cover 22 initiatively coupling 23 relative to internal spiral brake disc 11 along positive and negative multi-thread square spiral generation angular displacement, and produce certain axial force, further compression brake spring 7, realize the object of brake off: after initiatively coupling 23 input torques are stablized or continued to strengthen, initiatively coupling 23 and the 16 helical tooth flank engagements of driven coupling, in order to reach coupling 23 initiatively, produce axial displacement compression brake springs 7 and reach the balance with spring pressure, at this moment initiatively coupling 23 drives internal spiral brake disc 11, plane bearing 10 and lower spring cup fixed plate 9 and lower spring cup 8 be mobile further compression brake spring 7 vertically, lay down simultaneously and add the braking force being pressed on braking plate 20, brake off, the effect of performance coupling, carry out transmission, when working machine transships, initiatively on coupling 23, the axial force along axial direction also increases thereupon, initiatively coupling 23 must produce displacement along axial direction, further compression brake spring 7, pushes away equilibrium of forces in order to reach with brake spring 7, until the active helical tooth flank of coupling 23 and the helical tooth flank of driven coupling 16 are thrown off completely, now coupling is in the state skidding, no longer transmission, has protected machine, has realized limit for tonnage protection, power source is removed, torque disappears, the pressure of the brake spring 7 being subject on active coupling 23 is axial also resets into the state before shutdown thereupon, the energy of now brake spring 7 savings discharges immediately, promoting initiatively coupling 23 moves axially to driven coupling 16, drive successively lower spring cup 8, lower spring cup fixed plate 9, plane bearing 10, lower spring cup 8 and internal spiral brake disc 11 synchronously move axially, the brake disc that makes internal spiral brake disc 11 and driven coupling 16 respectively with braking plate 20 combinations, produce friction, the braking moment that formation has strengthened, realized braking.
Positive and negative internal and external screw braking load-limiting coupler is reasonable in design, and compact structure is sensitive reliable, can be widely used in multiclass mechanical transmission coupling.
Claims (4)
1. the braking load-limiting coupler with forward-reverse spiral cover, comprise initiatively coupling, positive and negative internal and external screw cover and internal spiral brake disc, it is characterized in that: the multi-thread external spiral that there is no self-locking performance that initiatively coupling (23) outer surface rotation direction is dextrorotation is dextrorotation with the rotation direction of positive and negative internal and external screw cover (22) does not have the multi-thread internal spiral of self-locking performance to be slidably matched to connect, the rotation direction of positive and negative internal and external screw cover (22) is that there is no the multi-thread external spiral of self-locking performance and the rotation direction of internal spiral brake disc (11) be that derotation does not have the multi-thread internal spiral of self-locking performance to be slidably matched to connect in derotation, internal spiral brake disc (11) axially take active coupling (23) as with reference to only doing unidirectional movement.
2. the braking load-limiting coupler with forward-reverse spiral cover according to claim 1, is characterized in that: initiatively coupling (23) has a ring-shaped step.
3. the braking load-limiting coupler with forward-reverse spiral cover according to claim 1, is characterized in that: positive and negative internal and external screw cover (22) has a ring-shaped step.
4. the braking load-limiting coupler with forward-reverse spiral cover according to claim 1, is characterized in that: internal spiral brake disc has a seam on (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466793.7U CN203404297U (en) | 2013-08-02 | 2013-08-02 | Braking load-limiting coupler with forward and backward spiral sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466793.7U CN203404297U (en) | 2013-08-02 | 2013-08-02 | Braking load-limiting coupler with forward and backward spiral sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404297U true CN203404297U (en) | 2014-01-22 |
Family
ID=49940234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320466793.7U Expired - Fee Related CN203404297U (en) | 2013-08-02 | 2013-08-02 | Braking load-limiting coupler with forward and backward spiral sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404297U (en) |
-
2013
- 2013-08-02 CN CN201320466793.7U patent/CN203404297U/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: 20140122 Termination date: 20140802 |
|
| EXPY | Termination of patent right or utility model |