A kind of expansion coupling retarder
Technical field
The utility model relates to a kind of retarder, especially relates to a kind of expansion coupling retarder.
Background technique
At present, the gear reduction unit of being used widely, worm-gear speed reducer, be subject to volume restrictions, its speed ratio is less than normal, and its transmission direction is generally parallel input output and can not satisfies some existing large speed ratios mini-plant that has again the vertical-transmission direction to require that slows down and install and use.Chinese patent discloses a kind of double worm gear reducing mechanism (notice of authorization number: CN 201250880Y), it comprises worm type of reduction gearing, be provided with two worm type of reduction gearings, worm screw on two worm type of reduction gearings links together by the adjustable coupling of axial rotation angle, realizes synchronization; Have at least one worm screw two ends all to stretch out in himself reducer shell in two worm type of reduction gearings, with a end that coupling is not installed on this worm screw input shaft as this reducing gear; Output shaft on each worm type of reduction gearing is connected with respectively a small gear; Small gear simultaneously and the gearwheel engagement driving, and with the transmission shaft at the gearwheel place output shaft as this reducing gear; The two ends of the worm screw of two worm type of reduction gearings all stretch out in the separately housing of retarder itself, two worm type of reduction gearings and connected small gear respectively, has respectively identical specification, the coupling that employed axial rotation angle is adjustable is made of two half-couplings, some screws evenly distribute on one of them half-coupling, corresponding described screw is provided with the slotted hole of some arcs on another half-coupling, is fastenedly connected by screw between two half-couplings.But this retarder need to link together reducer output shaft and mechanical axis by key, and mounting or dismounting are inconvenient, complicated operation, not reproducible use, and the surface of cooperation is damaged easily.
The model utility content
The utility model provides a kind of expansion coupling retarder, it mainly is to solve the existing retarder of prior art need to reducer output shaft and mechanical axis be linked together by key, mounting or dismounting are inconvenient, complicated operation, not reproducible use, the technical problem of the easy damage in surface of cooperation etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of expansion coupling retarder of the present utility model, comprise retarder, be provided with reducer output shaft in the described retarder, the inner cross-under of reducer output shaft has mechanical axis, and an end outer cover of reducer output shaft is connected to the locking plate mechanism that reducer output shaft can be held tightly mechanical axis.Locking plate is housed on the reducer output shaft, regulate locking plate, produce and radially hold expansive force tightly, hold the output shaft outer shroud tightly and make the output shaft contact area produce distortion, the aperture dwindles and holds mechanical axis tightly, along with the increase of locking plate expansive force, the corresponding increase of the enclasping force of output shaft and mechanical axis, with reach transmit required torque, axial force or the combined load of the two till.
As preferably, described locking plate mechanism comprises and is socketed in locking plate disk body on the reducer output shaft, the outer surface of locking plate disk body is provided with symmetrically arranged two sections conical surfaces, is glued with respectively two adjustment disks on two sections conical surfaces, links together by adjusting bolt between the adjustment disk.By lock bolt, can be so that two adjustment disks be close, thus by conical surface extruding locking plate disk body, make and press locking plate disk body aperture to dwindle.
As preferably, be provided with lining between the inside of the described reducer output shaft the other end and the mechanical axis, can make easy for installationly, and can reduce the mutual fretting wear of axle, and the back shaft smooth operation, and can reduce vibration.
Therefore, the moment of torsion of the utility model transmission is large, precision is high, mounting or dismounting are convenient and swift, simple to operate, polarization is good, reduce the processing grade be output axle and mechanical axis, reusable, do not damage matching surface, simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Component, position and numbering among the figure: retarder 1, reducer output shaft 2, mechanical axis 3, locking plate disk body 4, adjustment disk 6, adjusting bolt 7, lining 8.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of expansion coupling retarder of this example, such as Fig. 1, comprise retarder 1, be provided with reducer output shaft 2 in the retarder, the inner cross-under of reducer output shaft has mechanical axis 3, and an end outer cover of reducer output shaft is connected to the locking plate mechanism that reducer output shaft can be held tightly mechanical axis.Locking plate mechanism comprises and is socketed in locking plate disk body 4 on the reducer output shaft 2 that the outer surface of locking plate disk body is provided with on 5, two sections conical surfaces of symmetrically arranged two sections conical surfaces and is glued with respectively two adjustment disks 6, links together by adjusting bolt 7 between the adjustment disk.Be provided with lining 8 between the inside of the reducer output shaft the other end and the mechanical axis.
During use, regulate locking plate, produce and radially hold expansive force tightly, hold reducer output shaft 2 tightly and make the output shaft contact area produce distortion, the aperture dwindles and holds mechanical axis 3 tightly, along with the increase of locking plate expansive force, the corresponding increase of the enclasping force of output shaft and mechanical axis, with reach transmit required torque, axial force or the combined load of the two till.
The above only is specific embodiment of the utility model, but structure characteristic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification all are encompassed among the claim of the present utility model.