CN214788667U - High-bearing high-precision crowned tooth coupling - Google Patents

Abstract

The utility model discloses a high-bearing high accuracy cydariform tooth shaft coupling relates to shaft coupling technical field. The high-bearing high-precision crowned tooth coupler comprises a driving end half coupling assembly, a driven end half coupling assembly, a connecting element and a sealing element, wherein the driving end half coupling assembly and the driven end half coupling assembly are connected through end face teeth to transmit torque. This high-accuracy crowned tooth shaft coupling that bears compares with current crowned tooth shaft coupling, its advantage: the crowned tooth coupling has the advantages that the bearing capacity and the transmission precision of the crowned tooth coupling are improved, the transmission is stable, the service life is prolonged, the material cost is reduced, the disassembly and the assembly are convenient, the labor intensity is reduced, the production efficiency is improved, and in addition, the cost for lubricating the crowned teeth is also reduced.

Description

High-bearing high-precision crowned tooth coupling

Technical Field

The utility model relates to a shaft coupling technical field specifically is a high-bearing high accuracy cydariform tooth shaft coupling.

Background

The crowned tooth coupling is an important mechanical basic component, and has the function of connecting a driving shaft and a driven shaft and transmitting torque to enable the two shafts to rotate together. In engineering use, due to manufacturing and installation errors, deformation, abrasion, foundation sinking and the like of parts, axial displacement, radial displacement, angular displacement, comprehensive displacement and the like of two shafts are caused to deviate. The presence of the offset causes the coupling to generate additional dynamic loads, causing vibrations that deteriorate the behavior of the machine element. Among the various types of couplings, the crowned tooth coupling has the advantages of small size, large transmission torque, smooth transmission, excellent durability and the like, and is the most common part for connecting two transmission shafts in medium-sized and heavy-duty machinery.

In the existing crowned tooth coupling structure, as shown in fig. 7, a driving end inner gear ring C (31) is sleeved on a driving end outer gear shaft sleeve C (30), a driven end inner gear ring C (32) is sleeved on a driven end outer gear shaft sleeve C (33), the driving end inner gear ring C (31) and a driven end inner gear ring C (32) are connected through a reamed hole bolt C (37), an elastic pad D (38) and a nut C (39), a seal C (40) is respectively installed in a seal groove of the driving end inner gear ring C (31), a gland C (34) is respectively pressed on end faces of the driving end inner gear ring C (31) and the driven end inner gear ring C (32) through a bolt C (35) and an elastic pad C (36), and is respectively sleeved on the driving end outer gear shaft sleeve C (30) and the driven end outer gear shaft sleeve C (33).

The disadvantages of the existing crowned tooth coupling are:

1. the two half shaft coupling assemblies are connected through the hinged hole bolts, when the transmission torque is large or the impact load is borne, the hinged hole bolts are easy to loosen or break, so that production accidents are caused, and when spare parts are replaced, the assembly and disassembly are difficult, the workload of maintenance and repair is increased, the production efficiency of a rolling mill is influenced, and the maintenance labor intensity is increased;

2. the sealing element is made of common round rubber and is installed in the sealing groove of the inner gear ring, the sealing element is easy to age and difficult to replace, in addition, an oil filling hole is processed on the outer circle of the flange and only can seal the outer side of the drum-shaped tooth, the inner side has no more lubricating grease required for sealing, the lubricating cost is increased, and insufficient lubrication of a gear pair is easily caused;

3. the external gear shaft sleeve is integral, so that the assembly and disassembly are difficult, the material utilization rate is low, and the material cost of a product is increased;

4. the crowned tooth coupling has poor axial positioning performance, is easy to swing in a severe working environment and generates axial displacement.

Therefore, the applicant inherits the experience of abundant design development and actual manufacturing of the related industry for many years, researches and improves the existing structure and deficiency, and provides a high-bearing high-precision crowned tooth coupling so as to achieve the aim of higher practical value.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a high-bearing high-precision crowned tooth coupler, which solves the problems that the existing coupler assembly is connected through a reamed hole bolt, and when the transmission torque is larger or the impact load is borne, the reamed hole bolt is easy to loosen or break, so that the production accident is caused;

the existing coupler sealing element is easy to age and difficult to replace, in addition, an oil filling hole is processed on the outer circle of the flange, only the outer side of the drum-shaped tooth teeth can be sealed, more lubricating grease is needed when the inner side is not sealed, the lubricating cost is increased, and insufficient lubrication of a gear pair is easily caused;

the conventional external tooth shaft sleeve of the coupler is integral, is difficult to assemble and disassemble, has low material utilization rate and increases the material cost of a product;

the existing crowned tooth coupling has the comprehensive problems of poor axial positioning performance, easy swing and axial displacement in a severe working environment.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a high-bearing high-precision crowned tooth coupler comprises a driving end half coupling assembly, a driven end half coupling assembly, a connecting element, a sealing element, a spline pair A and a spline pair B, wherein the driving end half coupling assembly and the driven end half coupling assembly are connected through the connecting element;

the driven end half coupling assembly comprises a driven end shaft sleeve, a driven end outer gear ring, a driven end inner gear ring, a driven end gland, a sealing baffle, a retainer ring B and a lip seal;

the double-side sealing structure comprises a driving end inner gear ring, a driven end inner gear ring, a driving end shaft sleeve, a driving end outer gear ring, a driven end shaft sleeve, a driven end outer gear ring, a sliding block A and a sliding block B, wherein teeth on the flange end face of the driving end inner gear ring are meshed and connected with teeth on the flange end face of the driven end inner gear ring, grooves are formed in the opposite inner end faces of the driving end inner gear ring and the driven end inner gear ring, the driving end shaft sleeve is connected with the driving end outer gear ring through a spline pair A, the driven end shaft sleeve is connected with the driven end outer gear ring through a spline pair B, excircles at two ends of the driving end outer gear ring are spherical surfaces, inner hole surfaces of the sliding block A and the sliding block B are spherical surfaces, the sliding block A and the sliding block B are respectively matched with the spherical surface of the driving end outer gear ring to form double-side sealing of drum-shaped teeth at the driving end, and the double-side sealing can be axially positioned;

a groove is processed on the excircle of the left end of the driving end shaft sleeve, the retainer ring A is clamped in the groove, a bolt hole is processed on the right end face of the driven end shaft sleeve and is connected with a sealing baffle plate through a screw, and the sealing baffle plate can limit the axial movement of the driven end shaft sleeve and the driven end outer gear ring;

and the driving end half coupling assembly and the driven end half coupling assembly are connected through end face teeth to transmit torque.

Preferably, the coupling member and the sealing member include coupling bolts a and B, elastic washers a and B, nuts, plugs, sealing rings a and B.

Preferably, the slots are the same size.

Preferably, the sealing ring A connects the two coupling half components into an integral coupling through a connecting bolt A and a spring washer A nut, and the sealing ring A is tightly pressed in the groove.

Preferably, an external spline is arranged on the excircle of the driving end shaft sleeve, an internal spline is arranged in an inner hole of a driving end external gear ring matched with the external spline, the external spline and the internal spline are connected and combined into a whole external gear shaft sleeve I through a spline pair A, and the external spline and the driving end internal gear ring are connected through a driving end gear pair.

Preferably, the outer circle of the driven end shaft sleeve is provided with an external spline, the inner hole of the driven end external gear ring matched with the external spline is provided with an internal spline, the external spline and the internal spline are connected and combined into a whole external gear shaft sleeve II through a spline pair B, and the driven end external gear shaft sleeve II is connected with the driven end internal gear ring through a driven end gear pair.

Preferably, two identical sealing grooves are machined on the outer circle of the blocking plate, and two sealing elements are mounted to form inner side sealing of the crowned teeth.

Preferably, the spline pair a is an involute spline.

Preferably, the spline pair a is a rectangular spline.

Preferably, the spline pair B is one of an involute spline and a rectangular spline.

(III) advantageous effects

The utility model provides a high bearing high accuracy crowned tooth shaft coupling. The method has the following beneficial effects:

(1) the high-bearing high-precision crowned tooth coupler improves the bearing capacity and the transmission precision of the crowned tooth coupler, is stable in transmission, prolongs the service life, reduces the material cost, is convenient to disassemble and assemble, and in addition, reduces the cost of crowned tooth lubrication, reduces the labor intensity and improves the production efficiency.

(2) The inner gear ring at the driving end and the inner gear ring at the driven end of the high-bearing high-precision crowned tooth coupler are meshed and connected through the end face teeth, and compared with the common flange connection, the high-bearing high-precision crowned tooth coupler has the advantages of large transmission torque, automatic centering, convenience in assembly and disassembly, high stability and the like.

(3) The high-bearing high-precision crowned tooth coupling adopts a composite structure for the shaft sleeve at the driving end and the driven end and the outer gear ring, the shaft sleeve and the outer gear ring are connected through the spline pair to form an integral outer gear shaft sleeve, and are respectively connected with the inner gear ring through the gear pair, and the center of the spline pair is consistent with that of the gear pair, so that the transmission precision of the crowned teeth is improved, the material utilization rate of the crowned teeth is improved, and the product cost is reduced.

(4) The outer circles of shaft sleeves at two ends of the outer gear ring at the driving end of the high-bearing high-precision crowned tooth coupling are spherical surfaces, inner hole surfaces of the sliding blocks are also spherical surfaces, the two sliding blocks are respectively matched with the spherical surfaces of the outer gear ring at the driving end to form bilateral sealing of the crowned tooth at the driving end and can be axially positioned, a groove is machined in the outer circle at the left end of the shaft sleeve at the driving end, and the retaining ring is clamped in the groove to limit the movement of the shaft sleeve at the driving end and the outer gear ring at the driving end.

(5) A groove is formed in the outer circle of the right end of the driven end shaft sleeve of the high-bearing high-precision crowned tooth coupling, the retainer ring is clamped in the groove, and meanwhile, a bolt hole is formed in the right end face of the driven end shaft sleeve and is connected with the sealing baffle plate through screws to limit axial movement of the driven end shaft sleeve and the driven end outer gear ring; two identical sealing grooves are machined in the outer circle of the sealing baffle plate, two sealing elements are installed to form inner measurement sealing of the crowned teeth, a driven end gland is machined with a sealing groove, a lip seal is installed in the sealing groove to form outer measurement sealing of the crowned teeth, sealing performance is good, and disassembly is convenient.

Drawings

Fig. 1 is the utility model relates to a high bearing high accuracy crowned tooth shaft coupling's schematic structure diagram.

Fig. 2 is a front view of the ring gear of the present invention.

Fig. 3 is a detailed view of the end face tooth portion of the present invention.

Fig. 4 is a detailed view (tooth profile) of the end face tooth portion of the present invention.

Fig. 5 is the involute spline connection schematic diagram of the shaft sleeve and the outer gear ring of the utility model.

Fig. 6 is a schematic view of the rectangular spline connection between the shaft sleeve and the outer gear ring according to the present invention.

Fig. 7 is a schematic diagram of a prior art crowned tooth coupling.

In the figure: 1. a driving end shaft sleeve; 2. an outer gear ring of the driving end; 3. an inner gear ring of the driving end; 4. a slide block A; 5. A slide block B; 6. a driving end gear pair; 7. a driven end inner gear ring; 8. a driven end outer gear ring; 9. a driven end shaft sleeve; 10. a driven end gear pair; 11. an active end gland; 12. a driven end gland; 13. sealing the baffle; 14. a retainer ring A; 15. a retainer ring B; 16. a sealing ring A; 17. a seal ring B; 18. a seal member; 19. lip seal; 20. a coupling bolt A; 21. a spring washer A; 22. a nut; 23. a spring pad B; 24. A coupling bolt B; 25. a plug screw; 26. a spline pair A; 27. a spline pair B; 28. a screw; 30. an external gear shaft sleeve C of the driving end; 31. a driving end inner gear ring C; 32. a driven end inner gear ring C; 33. a driven end external tooth shaft sleeve C; 34. a gland C; 35. a bolt C; 36. a spring washer C; 37. reaming a hole bolt C; 38. a spring pad D; 39. a nut C; 40. and C, sealing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Embodiment 1, referring to fig. 1 to 6, a high-bearing high-precision crowned tooth coupling includes a driving end half coupling assembly, a driven end half coupling assembly, a coupling member and a sealing member connecting the driving end half coupling assembly and the driven end half coupling assembly; the driving end half coupling assembly comprises a driving end shaft sleeve 1, a driving end outer gear ring 2, a driving end inner gear ring 3, a sliding block A4, a sliding block B5, a driving end gland 11 and a retainer ring A14, the driven end half coupling assembly comprises a driven end shaft sleeve 9, a driven end outer gear ring 8, a driven end inner gear ring 7, a driven end gland 12, a sealing baffle 13 and a retainer ring B15, a lip seal 19 is connected with a connecting element and a sealing element at a driving end and a driven end, the lip seal 19 comprises a connecting bolt A20 and a connecting bolt B24, an elastic pad A21 and an elastic pad B23, a nut 22, a plug screw 25, a sealing ring A16 and a sealing ring B17, and the driving end half coupling assembly and the driven end half coupling assembly are connected through end face teeth to transmit torque.

Example 2

As the utility model discloses an improve the mode, driving end ring gear 3 passes through the end face tooth meshing with driven end ring gear 7 and is connected to connect two half-coupling subassemblies into a holistic shaft coupling through coupling bolt A20, bullet pad A21, nut 22, improved transmission torque, self-centering, easy dismounting, stability height, easy dismounting. Meanwhile, a groove is formed in the opposite inner end faces of the driving end inner gear ring 3 and the driven end inner gear ring 7, the two grooves are the same in size, the sealing ring 16 is arranged in the groove, the sealing ring 17 is sleeved in the outer circle step of the inner gear rings, the sealing ring A16 and the sealing ring B17 play roles in dust prevention, water prevention and sealing, and the service life of the end face teeth is guaranteed.

Example 3

As an improved mode, from fig. 1, fig. 5 and fig. 6 can know, the main driven end axle sleeve adopts the combined type structure with outer ring gear, the outer ring gear of driving end axle sleeve 1 and driving end is 2 through the vice (rectangle spline and involute spline) connection of spline, make up into a holistic external tooth axle sleeve, and be connected with driving end ring gear 3 through driving end gear pair 6 respectively, and the vice center of spline is unanimous with the vice center of driving end gear 6, the transmission precision of cydariform tooth has been promoted, the material utilization ratio of product has been improved, the product cost is reduced, when needing to maintain or change spare parts in the shaft coupling use, the dismouting of being convenient for.

Example 4

As an improved mode, 2 both ends excircles of initiative end outer gear ring are the sphere, slider A4, the also sphere of slider B5 internal orifice face, two sliders respectively with the cooperation of initiative end outer gear ring sphere, form the two side seal of initiative end cydariform tooth, reduce the quantity of lubricating grease, reduce lubricating cost, utilize the sphere seal, the rubber sealing member has been reduced, can not be because of the sealing member is ageing or damaged, cause the oil leak accident, and axial positioning can carry out, it has a recess to process on the left end excircle of initiative end axle sleeve 1 simultaneously, retaining ring A14 card is in the recess, can restrict the axial displacement of initiative end axle sleeve 1 and initiative end outer gear ring 2.

Example 5

As an improvement of the utility model, a groove is processed on the right end excircle of the driven end shaft sleeve 9, the retainer ring B15 is clamped in the groove, and meanwhile, a bolt hole is processed on the right end face of the driven end shaft sleeve 9 and is connected with the sealing baffle 13 through a screw 28, so that the axial movement of the driving end shaft sleeve 1 and the outer gear ring 2 can be limited; two identical sealing grooves are machined in the outer circle of the sealing baffle 13, two sealing elements 18 are installed to form inner side sealing of the crowned teeth, a sealing groove is machined in a driven end gland, a lip seal is installed in the sealing groove to form outer side sealing of the crowned teeth, sealing performance is good, and disassembly is convenient.

To sum up, this high bearing high accuracy crowned tooth shaft coupling compares its advantage with current crowned tooth shaft coupling: the crowned tooth coupling has the advantages that the bearing capacity and the transmission precision of the crowned tooth coupling are improved, the transmission is stable, the service life is prolonged, the material cost is reduced, the disassembly and the assembly are convenient, the labor intensity is reduced, the production efficiency is improved, and in addition, the cost for lubricating the crowned teeth is also reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a high-accuracy crowned tooth shaft coupling bears, includes driving end semi-coupling subassembly, driven end semi-coupling subassembly, coupling element, sealing element, the vice A (26) of spline and the vice B (27) of spline, driving end semi-coupling subassembly and driven end semi-coupling subassembly pass through coupling element to be connected its characterized in that: the driving end semi-coupling component comprises a driving end shaft sleeve (1), a driving end outer gear ring (2), a driving end inner gear ring (3), a sliding block A (4), a sliding block B (5), a driving end gland (11) and a retainer ring A (14);

the driven end half coupling component comprises a driven end shaft sleeve (9), a driven end outer gear ring (8), a driven end inner gear ring (7), a driven end gland (12), a sealing baffle plate (13), a retainer ring B (15) and a lip seal (19);

the double-side sealing structure is characterized in that teeth on the flange end face of the driving end inner gear ring (3) are meshed and connected with teeth on the flange end face of the driven end inner gear ring (7), grooves are machined in the opposite inner end faces of the driving end inner gear ring (3) and the driven end inner gear ring (7), a driving end shaft sleeve (1) is connected with a driving end outer gear ring (2) through a spline pair A (26), a driven end shaft sleeve (9) is connected with a driven end outer gear ring (8) through a spline pair B (27), outer circles at two ends of the driving end outer gear ring (2) are spherical surfaces, inner hole surfaces of a sliding block A (4) and a sliding block B (5) are spherical surfaces, the sliding block A (4) and the sliding block B (5) are respectively matched with the spherical surfaces of the driving end outer gear ring (2) to form double-side sealing of drum-shaped teeth at the driving end, and the double-side sealing can be axially positioned;

a groove is processed on the excircle of the left end of the driving end shaft sleeve (1), the retainer ring A (14) is clamped in the groove, a bolt hole is processed on the right end face of the driven end shaft sleeve (9) and is connected with a sealing baffle plate (13) through a screw (28), and the sealing baffle plate (13) can limit the axial movement of the driven end shaft sleeve (9) and the driven end outer gear ring (8);

and the driving end half coupling assembly and the driven end half coupling assembly are connected through end face teeth to transmit torque.

2. A high load capacity high accuracy crowned tooth coupling as claimed in claim 1, wherein: the coupling element and the sealing element comprise a coupling bolt A (20) and a coupling bolt B (24), an elastic pad A (21) and an elastic pad B (23), a nut (22), a plug screw (25), a sealing ring A (16) and a sealing ring B (17).

3. A high load capacity high accuracy crowned tooth coupling as claimed in claim 1, wherein: the slots are of the same size.

4. A high load capacity high accuracy crowned tooth coupling as claimed in claim 2, wherein: the sealing ring A (16) connects the two coupling half components into an integral coupling through a connecting bolt A (20) and a spring washer A (21) and a nut (22), and the sealing ring A (16) is tightly pressed in the groove.

5. A high load capacity high accuracy crowned tooth coupling as claimed in claim 1, wherein: an external spline is arranged on the excircle of the driving end shaft sleeve (1), an inner hole of a driving end external gear ring (2) matched with the external spline is arranged as an internal spline, and the external spline and the internal spline are connected through a spline pair A (26) to form a whole external gear shaft sleeve I and connected with a driving end internal gear ring (3) through a driving end gear pair (6).

6. A high load capacity high accuracy crowned tooth coupling as claimed in claim 1, wherein: and an external spline is arranged on the excircle of the driven end shaft sleeve (9), an inner hole of a driven end external gear ring (8) matched with the external spline is arranged as an internal spline, and the external spline and the driven end external gear ring are connected and combined into a whole external gear shaft sleeve II through a spline pair B (27) and connected with a driven end internal gear ring (7) through a driven end gear pair (10).

7. A high load capacity high accuracy crowned tooth coupling as claimed in claim 1, wherein: two identical sealing grooves are machined in the outer circle of the sealing baffle plate (13), and two sealing elements (18) are mounted to form inner side sealing of the crowned teeth.

8. A high load capacity high accuracy crowned tooth coupling as claimed in claim 1, wherein: the spline pair A (26) is an involute spline.

9. A high load capacity high accuracy crowned tooth coupling as claimed in claim 1, wherein: the spline pair A (26) is a rectangular spline.

10. A high load capacity high accuracy crowned tooth coupling as claimed in claim 8 or 9, wherein: the spline pair B (27) is one of an involute spline and a rectangular spline.

Images