CN202170935U - Safety shaft coupling of hydraulic press - Google Patents
Safety shaft coupling of hydraulic press Download PDFInfo
- Publication number
- CN202170935U CN202170935U CN2011202308288U CN201120230828U CN202170935U CN 202170935 U CN202170935 U CN 202170935U CN 2011202308288 U CN2011202308288 U CN 2011202308288U CN 201120230828 U CN201120230828 U CN 201120230828U CN 202170935 U CN202170935 U CN 202170935U
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- CN
- China
- Prior art keywords
- hydraulic press
- cam
- safety
- shaft
- recessed
- 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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Abstract
Provided is a safety shaft coupling of a hydraulic press, comprising a cam and a concave wheel. The cam and the concave wheel are respectively connected to a driving shaft and a driven shaft through a flat key I and a flat key II, and are respectively positioned with the driving shaft and the driven shaft through a fastening screw I and a fastening screw II. The safety shaft coupling of a hydraulic press is characterized in that the edges of the cam and the concave wheel are connected through a safety pin; an oil-free lubrication plate is disposed between the cam and the concave wheel. The safety shaft coupling of a hydraulic press is advantageous in that different shaft couplings can be assembled on a general hydraulic press based on various loads and production and process requirement; green product application can be realized; not only electrical protection and hydraulic system protection, but also mechanical protection can be ensured for the fully original device; various mechanical drives can be reliably achieved.
Description
(1) technical field:
The utility model relates to the mechanical transmission control apparatus, especially a kind of hydraulic press safety coupling.
(2) background technique:
Along with social material production speed ground is accelerated, many kinds, the mode of production of small lot forms.Avoid or reduce machinery the people is damaged, the expansion equipment function, improving the social production rate has been the development trend of manufacturing equipment technology innovation.To considering safety problem in the machine tool design manufacture process, the person can not cause industrial accident, can cause the fatal crass when serious, in the social competition of fierceness, potential collision hazard occurred.Equipment also should possess shortening auxiliary time except possessing the necessary technological action of production process, improve automation.Step up security, reduce noise, adopt green manufacturing.Make machine operation easy, laborsaving, stop accident, guarantee safety, increase work efficiency.
The equipment that the MANUFACTURER of great majority forging and pressing at present produces adopts fixed or flexible type coupling in all between motor and oil pump, connecting.When motor can not drive oil pump, often motor is shut down through electrical control (like thermorelay, current relay).Hydraulic system adopts safety valve (Pressure relief valve) not increase because of traffic overload makes system pressure thereupon, has played the safety protection effect.But do not take safety protection device in mechanical aspects.After can not thoroughly solving the load overload, the plant machinery safety problem.Can not be after safety installations start, with electrical signal form notifying operation person or the maintainer state of resuming work as early as possible, the downtime is long, efficient is low.
(3) model utility content:
The purpose of the utility model is to provide a kind of hydraulic press safety coupling, and it can solve the deficiency of existing technology, and highly versatile is safe, has the mechanical protection function.
The technological scheme of the utility model: a kind of hydraulic press safety coupling, comprise cam and recessed the wheel, cam is connected with driven shaft with driving shaft with flat key II according to flat key I with recessed the wheel respectively, and respectively according to Cock screw I and Cock screw II and driving shaft and driven shaft location; It is characterized in that said cam is connected according to safety pin with recessed edge of taking turns; The oil-free lubrication plate is installed between said cam and recessed the wheel.
Said driving shaft is a motor shaft, and driven shaft is a mechanical axis.
Said mechanical axis is a pump shaft.
Said safety pin joint detection device, said detection device connects warning device.
Working principle of the utility model and working procedure: this device is to balance each other with the needed moment of torsion of driving oil pump according to the moment of torsion that the safety pin shearing force produces; Former thereby block when motionless because of certain when oil pump, motor still rotates, and moment of torsion sharply increases up to safety pin is sheared disconnected; Motor and oil pump (or other machine driven system) have been played protective action.
The diameter of safety pin d of coupling finds the solution:
Can extrapolate the pressure p and the flow Q of oil pump by load (power F, speed v).Try to achieve power of motor:
N＝p Q/(60xη) kW (1)
P------maximum pressure MPa
Flow L/min during the Q------maximum pressure
η-----overall efficiency 0.88
Try to achieve outer torque of couple M through power of motor N:
M＝9549 N/n N.m (2)
N------rotating speed rpm
Try to achieve shearing force F thus
F＝1000M/D N (3)
Centre distance mm between the D-----bearing pin
Diameter of safety pin:
d
2＝(4F/лn 〔Γ〕) m (4)
(Γ)------shearing stress MPa allowable
The n------safety pin is to several
Can obtain diameter of safety pin through formula (1), (2), (3) and (4).
Safety coupling is installed between the oil pump (or other mechanical transmission) of motor and driving, flat key I and flat key II are with motor and mechanical axis rotational fixation; After being placed on the oil-free lubrication plate between cam and recessed the wheel, letting safety pin pass cam and make coupling become as a whole with recessed the wheel; Rotate coupling then by hand, motor and mechanical axis can rotate thereupon; Use again Cock screw I and Cock screw II at the axial restraint coupling on two axles; This coupling system connects motor and mechanical axis.
Using technology according to client is load request, the choose reasonable safety coupling; Motor is given mechanical axis (oil pump shaft) through coupling with electrical energy transfer, to carry out mechanical transmission and control; When system overloaded because of load, the safety pin in the safety coupling can be cut off; Though motor motion this moment, mechanical axis remains static; Mechanical system has been played protective action; Because the oil-free lubrication plate has wear-resisting functions, can avoid motor shaft and mechanical axis that the friction burn takes place because of skidding; After shear pin breakage, can feed back to the maintainer through physical quantity; After getting rid of mechanical failure or reducing load, recover the function of safety coupling again; In the forging equipment, electrical system, hydraulic system and mechanical system all have safety protection device thus, and this product belongs to intrinsic safety.
The superiority of the utility model: 1, employing this programme can be according to producing and technological requirement on general hydraulic press; Install according to the different safety couplings of different load selection; Realize the green product application; Both can also have mechanical protection, realize different mechanical transmission reliably guaranteeing that fully original equipment has outside electic protection, the hydraulic system protection; 2, have application widely, improved manufacturing efficiency; 3, improved device security, reduced fault and enlarge, protected machine driven system effectively, the part loss ratio reduces by 60%, and manufacturing efficiency has improved 50%; 4, this device is applied on the hydraulic press, and Security has improved 100%, and reliability also is improved thus.
(4) description of drawings:
Accompanying drawing is the structural representation of the related hydraulic press safety coupling of the utility model.
Wherein, 1 is motor shaft, and 2 is cam, and 3 is Cock screw I, and 4 is safety pin, and 5 are recessed the wheel, and 6 is Cock screw II, and 7 is mechanical axis, and 8 is flat key I, and 9 are the oil-free lubrication plate, and 10 is flat key II.
(5) embodiment:
Embodiment: a kind of hydraulic press safety coupling (seeing accompanying drawing); Comprise that cam 2 takes turns 5 with recessed; Cam 2 is taken turns 5 and is connected with driven shaft with driving shaft with flat key II 10 according to flat key I 8 respectively with recessed, and locatees with driving shaft and driven shaft according to Cock screw I 3 and Cock screw II 6 respectively; It is characterized in that said cam 2 is connected according to safety pin 4 with recessed 5 the edge of taking turns; Said cam 2 and recessedly oil-free lubrication plate 9 is installed between taking turns 5.
Said driving shaft is a motor shaft 1, and driven shaft is a mechanical axis 7.
Said mechanical axis 7 is a pump shaft.
Said safety pin 4 joint detection devices, said detection device connects warning device.
Claims (4)
1. a hydraulic press safety coupling comprises cam and recessed the wheel, and cam is connected with driven shaft with driving shaft with flat key II according to flat key I with recessed the wheel respectively, and respectively according to Cock screw I and Cock screw II and driving shaft and driven shaft location; It is characterized in that said cam is connected according to safety pin with recessed edge of taking turns; The oil-free lubrication plate is installed between said cam and recessed the wheel.
2. according to the said a kind of hydraulic press safety coupling of claim 1, it is characterized in that said driving shaft is a motor shaft, driven shaft is a mechanical axis.
3. according to the said a kind of hydraulic press safety coupling of claim 2, it is characterized in that said mechanical axis is a pump shaft.
4. according to the said a kind of hydraulic press safety coupling of claim 1, it is characterized in that said safety pin joint detection device, said detection device connects warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202308288U CN202170935U (en) | 2011-07-01 | 2011-07-01 | Safety shaft coupling of hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202308288U CN202170935U (en) | 2011-07-01 | 2011-07-01 | Safety shaft coupling of hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202170935U true CN202170935U (en) | 2012-03-21 |
Family
ID=45829131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202308288U Expired - Fee Related CN202170935U (en) | 2011-07-01 | 2011-07-01 | Safety shaft coupling of hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202170935U (en) |
-
2011
- 2011-07-01 CN CN2011202308288U patent/CN202170935U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20120701 |