Crowned tooth coupling

Abstract

The crowned tooth coupling comprises two outer tooth shaft sleeves arranged in a bilateral symmetry mode and inner tooth rings connected to the outer sides of the two outer tooth shaft sleeves in a meshed mode respectively, the two ends of the two inner tooth rings are of flange type structures, and the corresponding flange ends of the two inner tooth rings are connected through a plurality of first bolt assemblies. The outer gear shaft sleeve and the inner gear ring are arranged in the outer gear shaft sleeve, the end parts of the outer flanges of the inner gear ring and the outer gear shaft sleeve are respectively and detachably connected with a gland assembly, a sealing assembly is arranged between the gland assembly and the outer gear shaft sleeve, the excircle of each inner gear ring is provided with a plurality of detection holes, the detection holes can be positioned at the central position of any tooth bottom of the inner gear ring, and the inner side of each detection hole is provided with a first screw plug. The crowned tooth coupling provided by the utility model effectively solves the problems of measurement of tooth gaps of the crowned tooth coupling and quick replacement of sealing elements.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a drum-shaped gear coupling suitable for connection between a motor and a reducer, between a motor and equipment, and between a reducer and equipment. Background Art

[0002] The drum gear coupling is an important basic mechanical component, and its function is to connect the driving shaft and the driven shaft and transmit torque to make the two shafts rotate together. With the rapid development of modern industrial technology, various requirements for drum gear couplings are becoming higher and higher in engineering use. It is required to have high load-bearing and forward and reverse functions, a certain series of compensation amounts in angle, axial, radial, etc., and can be quickly connected and adjusted for centering. It also needs to be easy to install, disassemble, and lubricate, and have a long service life. In order to meet the above requirements, the tooth part of the drum gear coupling is the core of the design. Therefore, during use, customers have increasingly stringent requirements for the detection of tooth parameters. The difficulty of tooth parameter detection is the accurate detection of the tooth side clearance during tooth meshing. Therefore, how to accurately and quickly detect the tooth side clearance during drum gear meshing online is an urgent problem to be solved.

[0003] Existing drum gear coupling structures, such as Figure 8 As shown, it includes an external gear sleeve 1', an internal gear ring 2', a reamed hole bolt assembly 3', a pressure cover 4', a screw 5' and a sealing ring 6'. The internal gear ring 2' of the active end is sleeved on the external gear sleeve 1' of the active end, and the internal gear ring 2' of the driven end is sleeved on the external gear sleeve 1' of the driven end. The active end internal gear ring 2' and the driven end internal gear ring 2' are connected by the reamed hole bolt assembly 3'. The pressure cover 4' is connected to the active and slave end internal gear rings 2' by screws 5', and are respectively sleeved on the active end external gear sleeve and the driven end external gear sleeve, and the sealing ring 6' is pressed tightly in the sealing groove of the pressure cover. The disadvantages of this structure are: 1. There is no detection hole on the outer circle of the inner gear ring, and the tooth side clearance can only be detected by using a feeler gauge on the end face of the tooth. In addition, due to the inconsistent meshing clearances at both ends and in the middle of the drum-shaped teeth, the placement of the inner and outer teeth cannot ensure the levelness, etc., there are problems of inaccurate and difficult detection, and offline detection is required, which increases the time for on-site maintenance; 2. The gland is an integral type, and the seal is an ordinary sealing ring, which is installed in the sealing groove of the gland. When the sealing ring fails, it is necessary to remove the gland from the step of the outer gear sleeve and use the space on the shaft head to replace the seal. However, there is still no replacement space for some shaft heads when they are designed, and rapid online replacement cannot be achieved at this time. Utility Model Content

[0004] In view of the deficiencies in the background technology, the utility model provides a drum gear coupling, which effectively solves the problems of online rapid and accurate detection of the tooth side clearance of the drum gear coupling and rapid replacement of seals, and improves the load-bearing capacity and transmission accuracy of the drum gear coupling, reduces material costs, and extends service life. The drum gear coupling is easy to disassemble and assemble, which can effectively reduce labor intensity and improve production efficiency.

[0005] The technical solution of the utility model to solve the technical problem is as follows:

[0006] The utility model discloses a drum gear coupling, comprising two outer gear shaft sleeves symmetrically arranged on the left and right and inner gear rings respectively meshed and connected to the outer sides of the two outer gear shaft sleeves, the two inner gear rings have flange structures at both ends, the corresponding flange ends of the two are connected by a plurality of first bolt assemblies, the outer flange ends of the two are respectively detachably connected with a gland assembly, a sealing assembly is arranged between the gland assembly and the outer gear shaft sleeves, a plurality of detection holes are opened on the outer circle of each inner gear ring, the detection hole can be located at the center position of any tooth bottom of the inner gear ring, and a first screw plug is installed on the inner side thereof.

[0007] Furthermore, the pressure cover assembly includes a transparent cover arranged on the outer flange end of the inner gear ring by a plurality of first screws, and two step circles are provided outside the inner hole of the transparent cover, wherein a pressure cover is installed at the outer step circle by a plurality of second screws, and a sealing groove is formed between the inner side of the pressure cover and the inner step circle of the transparent cover, and the sealing assembly is installed in the sealing groove.

[0008] Furthermore, the sealing assembly comprises a lip seal installed in the sealing groove, the lip seal is in contact with the external gear sleeve, a round rubber is arranged on the inner side of the lip seal, and the round rubber is in contact with the transparent cover.

[0009] Furthermore, the transparent cover and the pressure cover are both split, and the transparent cover includes two semicircular semi-transparent cover units, and handles are respectively provided at both ends of one side of the semi-transparent cover unit. The two semi-transparent cover units are arranged opposite to each other, and the corresponding handles at both ends of the two are respectively connected and fixed by a second bolt assembly.

[0010] Furthermore, a plurality of oil filling holes are provided on the outer circle of the inner gear ring, and second screw plugs are installed in the oil filling holes.

[0011] Furthermore, the inner and outer circles of the inner gear ring are multi-step cylindrical with inclined surfaces.

[0012] Furthermore, the external gear sleeve comprises a sleeve and an external gear sleeve which is sleeved on the outside of the sleeve through a spline pair, and a groove is formed on the outer circle of the sleeve on one side of the spline pair and a retaining ring is installed whose inner side contacts the end of the external gear sleeve.

[0013] Furthermore, the external teeth of the external gear sleeve and the internal teeth of the internal gear ring are both provided with installation guide angles.

[0014] Compared with the prior art, the utility model has a novel, simple and reasonable design, and is easy to manufacture and use. By opening a detection hole at the tooth position on the inner gear ring, the detection of the side clearance of the coupling tooth can be met; by setting a split transparent cover and a pressure cover, the rapid replacement of the sealing assembly can be met, and when there is no replacement space on the shaft head, the rapid replacement of the online sealing assembly can also be achieved; by setting the inner gear ring to a multi-step cylinder with an inclined surface, the pitch circle diameter of the tooth can be increased under the premise of the same flange diameter, thereby improving the bearing capacity of the coupling; by setting a sealing assembly of a lip seal and a round rubber assembly, the sealing performance of the coupling is improved; by setting the outer gear sleeve to a split structure, the transmission accuracy of the drum teeth is improved, the material utilization rate of the product is improved, the product cost is reduced, and it is easy to disassemble and maintain; by setting an installation guide angle on the teeth of the outer sleeve and the inner gear ring, the installation of the internal and external teeth is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of

[0017] Figure 3 It is a schematic diagram of the transparent cover in the utility model;

[0018] Figure 4 is a schematic diagram of a semi-transparent cover unit in the present invention;

[0019] Figure 5 It is a schematic diagram of detecting the tooth side clearance by a feeler gauge in the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the split external gear sleeve in the utility model;

[0021] Figure 7 It is a schematic diagram of the guide angle of the toothed portion of the utility model;

[0022] Figure 8 It is a structural schematic diagram of an existing drum gear coupling;

[0023] Figure 1-7In: 1. external gear sleeve; 101. sleeve; 102. external gear sleeve; 103. retaining ring; 104. spline pair; 2. internal gear ring; 3. first bolt assembly; 4. transparent cover; 41. semi-transparent cover unit; 42. handle; 43. second bolt assembly; 5. pressure cover; 6. first screw; 7. second screw; 8. lip seal; 9. round rubber; 10. detection hole; 11. first plug screw; 12. oil filling hole; 13. second plug screw; 14. feeler gauge.

[0024] Figure 8 Middle: 1', external gear sleeve; 2', internal gear ring; 3', reamed hole bolt assembly; 4', gland; 5', screw; 6', sealing ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be the usual meanings understood by people with general skills in the field to which the disclosure belongs. The "upper", "lower", "left", "right", "front", "back", "inside", "outside" and the like used in the patent application specification and claims of the present disclosure are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly. The places not described in detail in the utility model are all known technologies of technicians in the technical field.

[0026] Embodiment 1:

[0027] like Figure 1-5As shown, the utility model is a drum gear coupling, which includes two outer gear sleeves 1 arranged symmetrically on the left and right and inner gear rings 2 respectively meshed and connected to the outer sides of the two outer gear sleeves 1, the two inner gear rings 2 have flange structures at both ends, and the corresponding flange ends of the two inner gear rings 2 are connected by a plurality of first bolt assemblies 3, which are usually composed of bolts, washers and nuts, and the outer flange ends of the two inner gear rings 2 are respectively detachably connected with gland assemblies, and a sealing assembly is arranged between the gland assembly and the outer gear sleeve 1, and a plurality of detection holes 10 are opened on the outer circle of each inner gear ring 2, and the detection hole 10 can be located at the center position of any tooth bottom of the inner gear ring 2, and a first screw plug 11 is installed inside the detection hole 10, and the first screw plug 11 is installed together with a sealing gasket. In this embodiment, the detection hole 10 is provided for detecting the tooth side clearance through a feeler gauge 14. When performing the inspection, remove the first screw plug and the sealing gasket, and rotate the external gear sleeve 1 so that the tooth surfaces of the inner teeth of the inner gear ring 2 and the outer teeth of the external gear sleeve 1 are meshed on one side. At this time, use a feeler gauge 14 to directly measure the tooth side clearance between the inner and outer teeth of the drum gear. If the tooth surfaces are not meshed on one side, the total clearance can also be obtained by adding the clearances on both sides.

[0028] In this embodiment, a plurality of oil filling holes 12 may be provided on the outer circle of the inner gear ring 2, and a second screw plug 13 is installed in the oil filling hole 12 for adding lubricating oil.

[0029] In this embodiment, the inner gear ring 2 can also be set to a multi-step cylinder with beveled inner and outer circles, and its tooth portion is arranged on the inner circle corresponding to the steps of the inner gear ring. Under the premise of the same flange diameter, the pitch circle diameter of the tooth can be increased to improve the bearing capacity of the coupling.

[0030] Example 2

[0031] On the basis of Example 1, the utility model provides a drum gear coupling, wherein the gland assembly comprises a transparent cover 4 installed on the outer flange end of the inner gear ring 2 by a plurality of first screws 6, two step circles are provided outside the inner hole of the transparent cover 4, wherein a gland 5 is installed at the outer step circle by a plurality of second screws 7, the inner side of the gland 5 and the inner step circle of the transparent cover 4 form a sealing groove, and the sealing assembly is installed in the sealing groove and is pressed by the gland 5. Further, the sealing assembly comprises a lip seal 8 installed in the sealing groove, the lip seal 8 is in contact with the outer gear sleeve 1, and a round rubber 9 is arranged on the inner side thereof, and the round rubber 9 is in contact with the transparent cover 4. The sealing assembly is formed by the lip seal 8 and the round rubber 9, and has a better sealing effect and a longer service life than a single sealing ring, and the sealing assembly is pressed by the gland 5, and the gland 5 can be removed to replace the sealing assembly.

[0032] Example 3

[0033] On the basis of Example 2, the utility model provides a drum gear coupling, wherein the transparent cover 4 and the pressure cover 5 can be set to a split type, the transparent cover 4 includes two semicircular semi-transparent cover units 41, and handles 42 are respectively provided at both ends of one side of the semi-transparent cover unit 41. The two semi-transparent cover units 41 are arranged opposite to each other, and the corresponding handles 42 at both ends of the two are respectively connected and fixed by the second bolt assembly 43, which is convenient for disassembly; the pressure cover 5 is also two semicircular structures, which are installed on the transparent cover 4 by the second screw 7, and the lip seal 8 is pressed. During the working process, if the transparent cover, pressure cover or sealing assembly needs to be replaced, even if there is no replacement space at the shaft head, the transparent cover, pressure cover and sealing assembly can be quickly replaced online.

[0034] Example 4

[0035] On the basis of any one of Examples 1-3, the utility model provides a drum gear coupling, wherein the external gear sleeve 1 may adopt a split structure, comprising a sleeve 101 and an external gear sleeve 102 sleeved on the outside of the sleeve 101 through a spline pair 104, a groove is provided on the outer circle of the sleeve 101 on one side of the spline pair 104, and a retaining ring 103 is installed on the inner side of which contacts the end of the external gear sleeve 102, forming an integral external gear sleeve assembly, the retaining ring 103 performs axial positioning on the sleeve 101 and the external gear sleeve 102, the external gear sleeve assembly is meshed and connected with the inner gear ring through a gear pair, and the center of the spline pair is consistent with the center of the gear pair, thereby improving the transmission accuracy of the drum gear, improving the material utilization rate of the product, and reducing the product cost, and at the same time, when the coupling needs to be repaired or spare parts replaced during use, it is convenient to disassemble and assemble.

[0036] Example 5

[0037] Based on any one of embodiments 1-4, the utility model provides a drum gear coupling, wherein the outer teeth of the outer gear sleeve 1 and the inner teeth of the inner gear ring 2 are both provided with installation guide angles to facilitate the installation of the inner and outer teeth. Figure 7 C2 and C5 are the installation guide angle identification positions.

Claims

1. A drum gear coupling, comprising two external gear sleeves (1) arranged symmetrically on both sides and an internal gear ring (2) respectively meshingly connected to the outer sides of the two external gear sleeves (1), characterized in that: Both ends of the two inner gear rings (2) are flange structures, and the corresponding flange ends of the two are connected by a plurality of first bolt assemblies (3). The outer flange ends of the two are respectively detachably connected with a gland assembly, and a sealing assembly is arranged between the gland assembly and the outer gear sleeve (1). A plurality of detection holes (10) are opened on the outer circle of each inner gear ring (2), and the detection hole (10) can be located at the center position of any tooth bottom of the inner gear ring (2), and a first screw plug (11) is installed inside the detection hole.

2. A drum gear coupling according to claim 1, characterized in that: The gland assembly comprises a transparent cover (4) which is arranged on the outer flange end of the inner gear ring (2) by means of a plurality of first screws (6); two step circles are provided outside the inner hole of the transparent cover (4); a gland (5) is installed at the outer step circle by means of a plurality of second screws (7); the inner side of the gland (5) and the inner step circle of the transparent cover (4) form a sealing groove; the sealing assembly is installed in the sealing groove.

3. A drum gear coupling according to claim 2, characterized in that: The sealing assembly comprises a lip seal (8) installed in a sealing groove, the lip seal (8) being in contact with the external gear sleeve (1), and a round rubber (9) being arranged on the inner side thereof, and the round rubber (9) being in contact with the transparent cover (4).

4. A drum gear coupling according to claim 2 or 3, characterized in that: The transparent cover (4) and the pressure cover (5) are both split, and the transparent cover (4) comprises two semicircular semi-transparent cover units (41). Two ends of one side of the semi-transparent cover unit (41) are respectively provided with handles (42). The two semi-transparent cover units (41) are arranged opposite to each other, and the corresponding handles (42) at both ends of the two are respectively connected and fixed by a second bolt assembly (43).

5. The drum gear coupling according to claim 1, characterized in that: A plurality of oil filling holes (12) are provided on the outer circle of the inner gear ring (2), and a second screw plug (13) is installed in the oil filling hole (12).

6. The drum gear coupling according to claim 1, characterized in that: The inner and outer circles of the inner gear ring (2) are multi-step cylindrical with inclined surfaces.

7. The drum gear coupling according to claim 1, characterized in that: The external gear shaft sleeve (1) comprises a shaft sleeve (101) and an external gear sleeve (102) sleeved on the outside of the shaft sleeve (101) via a spline pair (104); a groove is provided on the outer circumference of the shaft sleeve (101) on one side of the spline pair (104) and a retaining ring (103) is installed, the inner side of which contacts the end of the external gear sleeve (102).

8. The drum gear coupling according to claim 1, characterized in that: The external teeth of the external gear sleeve (1) and the internal teeth of the internal gear ring (2) are both provided with installation guide angles.

Images