CN218325881U

CN218325881U - Flexible damping universal coupling

Info

Publication number: CN218325881U
Application number: CN202222211292.6U
Authority: CN
Inventors: 孟超球
Original assignee: Zhejiang Hanghu Machinery Technology Co ltd
Current assignee: Zhejiang Hanghu Machinery Technology Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-01-17
Anticipated expiration: 2032-08-23

Abstract

The utility model relates to an universal joint technical field discloses a flexible shock attenuation universal joint, the utility model discloses a main shaft, countershaft, flexible bent piece, plum blossom preforming, be equipped with on the plum blossom preforming and punch a hole and be in the bilateral symmetry that punches a hole is equipped with supporting screw, the main shaft with the one end of countershaft all cooperates separately and is equipped with the cross package the fixed main chain wheel that is equipped with of the other end of main shaft, the fixed vice chain wheel that is equipped with of the other end of countershaft, main chain wheel with annular array is equipped with single button head fluting and location screw on a terminal surface of vice chain wheel. The utility model discloses a with the U shape flexible bent piece is connected between two axis bodies and is passed through the lateral wall and the axis body of flexible bent piece form cooperation transmission torque, when axial relative displacement takes place for two axis bodies flexible bent piece realizes the offset through changing the bending degree, and such structure is more fit for frequently relapseing axial displacement and speed at the axis body and is faster and along with under the operating mode of certain impact force.

Description

Flexible damping universal coupling

Technical Field

The utility model relates to an universal joint technical field specifically is a flexible shock attenuation universal joint.

Background

In the prior art, the axial displacement adjustment of the universal coupling is realized through the telescopic structure of the spline shaft, and the stress surface of the spline shaft is the side edge of the spline shaft, so that the side edges of the spline shaft and the spline sleeve are pressed and tightly abutted when the spline shaft and the spline sleeve transmit torque, an oil film is difficult to form between the abutted wall surfaces, and dry friction can be generated on the side wall surface of the spline shaft when the spline shaft and the spline sleeve generate axial relative displacement, and frequent telescopic easily causes the contact surface to be sintered to cause excessive wear.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: to overcome the problems presented above, a flexible damping universal joint is provided which solves the above mentioned problems.

The utility model provides a its technical problem take following technical scheme to realize:

a flexible damping universal coupling comprises a main shaft, an auxiliary shaft, a flexible curved piece and a plum blossom-shaped pressing piece, wherein the plum blossom-shaped pressing piece is provided with a punched hole, matched screw holes are symmetrically formed in two sides of the punched hole, a cross-shaped bag is respectively matched with one end of the main shaft and one end of the auxiliary shaft, a main toothed disc is fixedly arranged at the other end of the main shaft, an auxiliary toothed disc is fixedly arranged at the other end of the auxiliary shaft, a single-round-head groove and a positioning screw hole are formed in one end face of the main toothed disc and one end face of the auxiliary toothed disc in an annular array mode, a fastening screw hole flange is fixedly arranged in the single-round-head groove, the circle center of the fastening screw hole flange is coaxial with the center of the round end of the single-round-head groove, the flexible curved piece is U-shaped, sleeve holes are symmetrically formed in two ends of the flexible curved piece and used for being sleeved on the flange of the fastening screw hole, the plum blossom-shaped pressing piece is pressed on the flexible curved piece after the sleeve hole is sleeved on the flange of the fastening screw hole, bolts are arranged between the fastening screw hole and the positioning screw hole and the matched screw hole.

Preferably, the flexible bent sheet comprises two rubber plates and a stainless steel sheet, the two rubber plates are respectively attached to the inner side wall and the outer side wall of the stainless steel sheet, and rivets are fastened between the rubber plates and the stainless steel sheet.

Preferably, a guide mandrel coaxial with the main shaft is fixedly arranged on the end face of the main toothed disc, and guide shaft holes for inserting and matching the guide mandrel are arranged in the auxiliary shaft and the auxiliary toothed disc.

Preferably, the guide mandrel and the guide shaft hole are in clearance fit.

Preferably, a semicircular groove is formed in the front half section, far away from the main shaft, of the guide mandrel, and the semicircular groove is arranged in an annular array mode by taking the axis of the guide mandrel as the center.

Preferably, at least two annular grooves are formed in the root of the guide mandrel at intervals, and O-shaped sealing rings are embedded in the annular grooves and abut against the inner wall of the guide shaft hole.

The utility model has the advantages that: compare traditional adoption spline and realize flexible complex structure, this device is through with the U shape flexible bent piece is connected between two axostylus bodies and is passed through the lateral wall and the axostylus body formation cooperation transmission torque of flexible bent piece when axial relative displacement takes place for two axostylus bodies flexible bent piece realizes the compensation through changing the bending degree, and such structure is more fit for under the operating mode that the axostylus body frequently repeats axial displacement and speed is very fast and accompany certain impact force.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an enlarged schematic view of the plum blossom-shaped press piece of FIG. 2;

fig. 4 is a schematic structural diagram of the present invention;

fig. 5 is a schematic structural diagram of the present invention;

fig. 6 is a schematic structural view of the middle flexible curved piece of the present invention.

The scores in the figures are as follows: 10. a counter shaft; 11. an auxiliary chain wheel; 12. a guiding mandrel; 13. a flexible curved piece; 14. a main shaft; 15. a semicircular groove; 16. a ring groove; 17. pressing plum blossom tablets; 18. punching; 19. a matching screw hole; 20. a guide shaft hole; 21. slotting with a single round head; 22. fastening screw hole flanges; 23. positioning the screw hole; 24. a rubber plate; 25. stainless steel sheet metal; 26. riveting; 27. a master chain wheel; 28. and (5) trepanning.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

as shown in fig. 1-6, the flexible damping universal coupling of the present invention comprises a main shaft 14, an auxiliary shaft 10, a flexible curved piece 13, a plum blossom-shaped pressing piece 17, the plum blossom-shaped pressing sheet 17 is provided with a punching hole 18, matched screw holes 19 are symmetrically arranged at two sides of the punching hole 18, a cross-shaped bag is respectively arranged at one end of the main shaft 14 and one end of the auxiliary shaft 10 in a matching way, a main toothed disc 27 is fixedly arranged at the other end of the main shaft 14, an auxiliary toothed disc 11 is fixedly arranged at the other end of the auxiliary shaft 10, a single round head slot 21 and a positioning screw hole 23 are arranged on one end surface of the main chain wheel 27 and the auxiliary chain wheel 11 in an annular array, a fastening screw hole flange 22 is fixedly arranged in the single round head slot 21, the center of the fastening screw hole flange 22 is coaxial with the center of the round head end of the single round head slot 21, the flexible curved sheet 13 is U-shaped, two ends of the flexible curved sheet 13 are symmetrically provided with sleeve holes 28 for being sleeved on the fastening screw hole flange 22, the trepanning 28 on the flexible curved sheet 13 is sleeved on the fastening screw hole flange 22, then the plum blossom pressing sheet 17 is pressed on the flexible curved sheet 13, bolts are arranged between the fastening screw hole flange 22 and the punched hole 18 in a fastening connection mode, screws are arranged between the positioning screw hole 23 and the matched screw hole 19 in a fastening connection mode, the plum blossom-shaped pressing sheet 17 is fastened and pressed on the end surfaces of the auxiliary chain wheel 11 and the main chain wheel 27 through bolts and screws so as to fasten the flexible curved sheet 13, and the force application surface of the flexible curved piece 13 is the surface matched with the side edge of the single round head slot 21 when the flexible curved piece transmits torque, the design effectively reduces the influence of vibration in the transmission process on the bolt and the screw, and ensures good power transmission.

Preferably, the flexible bent piece 13 comprises two rubber plates 24 and a stainless steel sheet 25, the two rubber plates 24 are respectively attached to the inner side wall and the outer side wall of the stainless steel sheet 25, rivets 26 are tightly fixed between the rubber plates 24 and the stainless steel sheet 25, and the flexible bent piece 13 is made of flexible materials to be matched with metal parts with good elasticity, so that the cheese with certain strength can have good bending deformation capacity, and meanwhile, the rubber plates 24 can play a certain role in buffering and absorbing impact, so that the coupler can work well under the load condition of coping with rapid axial movement.

Preferably, a guide spindle 12 coaxial with the main shaft 14 is fixedly arranged on an end face of the main toothed disc 27, a guide shaft hole 20 for inserting and matching the guide spindle 12 is arranged in the auxiliary shaft 10 and the auxiliary toothed disc 11, and the guide spindle 12 and the guide shaft hole 20 can play a good role in guiding when the relative axial position of the main shaft 14 and the auxiliary shaft 10 moves through matching, so that the coaxiality deviation in the stretching process is reduced.

Preferably, the guide mandrel 12 is in clearance fit with the guide shaft hole 20.

Preferably, a semicircular groove 15 is formed in the front half section of the guide mandrel 12, which is far away from the main shaft 14, the semicircular grooves 15 are arranged in an annular array with the axis of the guide mandrel 12 as the center, and lubricating grease for lubrication can be filled in the semicircular grooves 15 through the arrangement of the semicircular grooves 15, so that an oil film is easily formed between the contact surfaces of the guide shaft hole 20 and the guide mandrel 12, and the oil film is convenient for mutual axial displacement.

Preferably, at least two ring grooves 16 are formed at the root of the guide mandrel 12 at intervals, and an O-shaped sealing ring is embedded in the ring grooves 16 and abuts against the inner wall of the guide shaft hole 20.

It should be emphasized that the embodiments described herein are illustrative and not restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also falls within the scope of the present invention, in any other embodiments derived by those skilled in the art according to the technical solutions of the present invention.

Claims

1. A flexible damping universal coupling comprising a primary shaft (14), a secondary shaft (10), characterized in that: the flexible bending piece is characterized by further comprising a flexible bending piece (13), a plum blossom pressing piece (17), wherein the plum blossom pressing piece (17) is provided with a punched hole (18), matched screw holes (19) are symmetrically formed in two sides of the punched hole (18), a cross bag is respectively arranged at one end of each of the main shaft (14) and the auxiliary shaft (10) in a matched mode, a main toothed disc (27) is fixedly arranged at the other end of the main shaft (14), an auxiliary toothed disc (11) is fixedly arranged at the other end of the auxiliary shaft (10), a single-round-head notch (21) and a positioning screw hole (23) are arranged in an annular array on one end face of each of the main toothed disc (27) and the auxiliary toothed disc (11), a screw hole fastening flange (22) is fixedly arranged in the single-head notch (21), the circle center of the fastening screw hole flange (22) is coaxial with the center of the round head end of the single-head notch (21), the flexible bending piece (13) is in a U shape, sleeve holes (28) are symmetrically formed in two ends of the flexible bending piece (13) and are used for being sleeved with the fastening screw holes (22), and the flexible bending piece (19) and the flexible bending piece (17) is connected with the matched screw holes (19), and the screw holes (19).

2. A flexible damping universal joint according to claim 1, wherein: the flexible bent piece (13) comprises two rubber plates (24) and a stainless steel sheet (25), the two rubber plates (24) are respectively attached to the inner side wall and the outer side wall of the stainless steel sheet (25), and rivets (26) are tightly fixed between the rubber plates (24) and the stainless steel sheet (25).

3. A flexible damping universal joint according to claim 2, wherein: a guide mandrel (12) coaxial with the main shaft (14) is fixedly arranged on the end face of the main chain wheel (27), and guide shaft holes (20) for inserting and matching the guide mandrel (12) are arranged in the auxiliary shaft (10) and the auxiliary chain wheel (11).

4. A flexible damping universal joint according to claim 3, wherein: the guide mandrel (12) is in clearance fit with the guide shaft hole (20).

5. A flexible damping universal joint according to claim 4, characterized in that: the guide mandrel is characterized in that a semicircular groove (15) is formed in the front half section, far away from the main shaft (14), of the guide mandrel (12), and the semicircular groove (15) is arranged in an annular array mode by taking the axis of the guide mandrel (12) as the center.

6. A flexible damping universal joint according to claim 5, characterized in that: at least two annular grooves (16) are formed in the root of the guide mandrel (12) at intervals, and O-shaped sealing rings are embedded in the annular grooves (16) and abut against the inner wall of the guide shaft hole (20).