Gear coupling

Abstract

The utility model provides a gear coupling and belongs to the technical field of couplings. The gear coupling solves the problems that an existing gear coupling is unstable in centering, large in mass and prone to bringing burden to a coupling transmission system. The gear coupling comprises an outer gear sleeve set, an inner gear ring and a sealing end cover, and the outer gear sleeve set comprises a first outer gear sleeve and a second outer gear sleeve; the first outer gear sleeve and the second outer gear sleeve are each integrally provided with a gear sleeve sleeve and a flange base, limiting protruding blocks are evenly formed in the positions, on the end face of the flange base, of the first outer gear sleeve in the circumferential direction, and limiting grooves corresponding to the limiting protruding blocks are formed in the positions, on the end face of the flange base, of the second outer gear sleeve. The sealing end cover is installed between the outer gear sleeve sets in an embedded mode, the whole sealing end cover is of an annular structure, a deformation groove is formed in the sealing end cover, and a sealing ring is sleeved with the inner side wall, close to one side of the inner gear ring, in the deformation groove in a matched mode. The utility model has the advantages that the installation is convenient, the centering stability is enhanced, the sealing performance is good, the mass and load are reduced, and the material cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings, and in particular relates to a gear coupling. Background Art

[0002] Gear couplings consist of an internal ring gear with the same number of teeth and a flanged half-coupling with external teeth. They feature a small radial dimension and high load capacity, making them commonly used in shaft transmissions under low-speed, heavy-load conditions, such as those in the metallurgical, mining, and lifting and transportation industries. They are also suitable for the petroleum, chemical, and general machinery industries. However, conventional gear couplings are prone to misalignment during manufacturing, installation, and operation, leading to misalignment.

[0003] According to the patent application number CN202323331021.5, a gear coupling that is easy to install gears is provided. It includes two sets of symmetrically arranged gear sleeves, two sets of inner gear rings, and two sets of fixed end covers. The inner gear rings are connected to auxiliary connecting sleeves. The inner wall of the auxiliary connecting sleeves is provided with gear grooves suitable for different equipment. It can meet the needs of different equipment. The cooperation of the limiting slide and the limiting slide groove of the auxiliary connecting sleeve can be precisely limited. This patent ensures the accuracy of the gear installation between the gear sleeve and the inner gear ring, but does not guarantee the centering stability between the two sets of gear sleeves. In addition, the fixed end covers are thick and heavy, which easily brings a certain burden to the coupling transmission system. Utility Model Content

[0004] The purpose of the utility model is to provide a gear coupling in view of the above problems existing in the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions: a gear coupling, including an external gear sleeve group, an inner gear ring and a sealing end cover, the external gear sleeve group includes two types of first external gear sleeve and second external gear sleeve, each of which cooperates with an inner gear ring and a sealing end cover to form a half coupling, and the two sets of half couplings are relatively connected to form a gear coupling; the first external gear sleeve and the second external gear sleeve are both integrally formed with a gear sleeve sleeve and a flange base, the inner side wall of the gear sleeve sleeve is provided with an end cover step and a gear sleeve inner tooth, and the flange base is evenly provided with a plurality of fastening bolt holes in the circumferential direction, wherein the first external gear sleeve Limiting protrusions are formed evenly around the end surface of the flange base with fastening bolt holes as intervals, and the second outer gear sleeve is also provided with limiting grooves corresponding to the limiting protrusions on the end surface of the flange base; outer teeth of the gear ring are formed on the outer wall of the inner gear ring, and the outer teeth of the gear ring are meshed and connected with the inner teeth of the gear sleeve; the sealing end cover is embedded in the end cover step between the first outer gear sleeve or the second outer gear sleeve and the inner gear ring, and the whole is an annular structure, and an annular deformation groove is provided on the outward side, so that its cross-section is U-shaped, and a sealing ring is provided on the inner wall of the deformation groove close to the inner gear ring.

[0006] In the above-mentioned gear coupling, stud bolts are provided through the fastening bolt holes corresponding to the first external gear sleeve and the second external gear sleeve, and bolt sleeves are provided between the stud bolts and the inner side walls of the fastening bolt holes.

[0007] In the above-mentioned gear coupling, the deformation groove is provided with an oblique guide groove at one end close to the step on the end face of the gear sleeve.

[0008] In the above-mentioned gear coupling, the sealing end cover is made of elastic sealing material.

[0009] Compared with the existing technology, the gear coupling provided by the present invention facilitates the corresponding installation between the external gear sleeves by arranging corresponding limiting protrusions and limiting grooves on the external gear sleeves, thereby enhancing the overall centering stability of the gear coupling; by adopting an embedded sealing end cover instead of the traditional metal fixed end cover, the overall mass and load of the gear coupling are reduced while ensuring the sealing, thereby saving material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the gear coupling;

[0011] Figure 2 This is the structural exploded diagram of the gear coupling;

[0012] Figure 3 This is a structural sectional view of the gear coupling;

[0013] Figure 4 yes Figure 3 A magnified view of the local structure within the middle circle A;

[0014] In the above figure, 100, external gear sleeve assembly; 101, first external gear sleeve; 102, second external gear sleeve; 110, gear sleeve sleeve; 111, end cover step; 112, gear sleeve inner teeth; 120, flange base; 121, fastening bolt hole; 122, limiting protrusion; 123, limiting groove; 130, stud bolt; 131, bolt sleeve; 200, inner gear ring; 210, gear ring outer teeth; 300, sealing end cover; 310, deformation groove; 311, bevel guide groove; 320, sealing ring. DETAILED DESCRIPTION

[0015] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0016] like Figures 1 to 4As shown, the gear coupling includes an external gear sleeve group 100, an internal gear ring 200 and a sealing end cover 300. The external gear sleeve group 100 includes two types of first external gear sleeve 101 and second external gear sleeve 102. The two are respectively matched with an internal gear ring 200 and a sealing end cover 300 to form a half coupling. The two sets of half couplings are relatively connected to form the gear coupling of the utility model.

[0017] like Figure 2 As shown, the first and second outer gear sleeves 101 and 102 of the outer gear sleeve assembly 100 are arranged opposite each other, and both are integrally formed with a gear sleeve sleeve 110 and a flange base 120. The inner side wall of the gear sleeve sleeve 110 is sequentially provided with an end cover step 111 and gear sleeve inner teeth 112 from the outside to the inside. The flange base 120 is evenly provided with a plurality of fastening bolt holes 121 circumferentially. The fastening bolt holes 121 between the first and second outer gear sleeves 101 and 102 correspond to each other, and stud bolts 130 are provided through the long bolt holes formed by the two. Bolt sleeves 131 are provided between the stud bolts 130 and the inner side walls of the fastening bolt holes 121 to tighten and protect the stud bolts 130. The outer side wall of the inner gear ring 200 is formed with gear ring outer teeth 210, which are correspondingly meshed with the gear sleeve inner teeth 112.

[0018] The difference in structure between the first outer gear sleeve 101 and the second outer gear sleeve 102 is that the first outer gear sleeve 101 has limiting protrusions 122 uniformly formed circumferentially on the end face of the flange base 120 with fastening bolt holes 121 as intervals, and the second outer gear sleeve 102 also has limiting grooves 123 on the end face of the flange base 120. The limiting grooves 123 and the limiting protrusions 122 correspond to each other, which facilitates the corresponding installation between the first outer gear sleeve 101 and the second outer gear sleeve 102, thereby enhancing the overall centering stability of the gear coupling.

[0019] like Figures 3 and 4 As shown, the sealing end cap 300 is made of an elastic sealing material, preferably rubber, and is embedded in the end cap step 111 between the first outer gear sleeve 101 or the second outer gear sleeve 102 and the inner gear ring 200, presenting an overall annular structure. The sealing end cap 300 has an annular deformation groove 310 on the outward side, which has a U-shaped cross-section. A sealing ring 320 is fitted on the inner side wall of the deformation groove 310 near the inner gear ring 200. An angled guide groove 311 is provided on the end near the end step of the gear sleeve sleeve 110. The angled guide groove 311 serves as a guide during installation of the sealing end cap 300.

[0020] When the sealing end cap 300 is embedded in the installation, it needs to be pressed into the space between the first outer gear sleeve 101 or the second outer gear sleeve 102 and the inner gear ring 200 until the bottom surface of the end cap contacts the end cap step 111. At this time, there may be a gap between the sealing end cap 300 and the side wall of the inner gear ring 200. Therefore, a sealing ring 320 is installed on the inner wall of the deformation groove 310 to ensure a good seal between the sealing end cap 300 and the inner gear ring 200. The deformation groove 310 provides a deformation space, allowing the sealing end cap 300 to be adjusted and installed according to the working shaft and inner gear ring 200 of different outer diameters. The use of an embedded sealing end cap 300 instead of a traditional metal fixed end cap reduces the overall mass and load of the gear coupling while ensuring sealing performance, saving material costs.

[0021] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0022] Although various terms are used in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A gear coupling, comprising an external gear sleeve (100), an internal gear ring (200) and a sealing end cover (300), wherein the external gear sleeve (100) comprises two types: a first external gear sleeve (101) and a second external gear sleeve (102), each of which cooperates with an internal gear ring (200) and a sealing end cover (300) to form a half coupling, and the two sets of half couplings are relatively connected to form a gear coupling; characterized in that: The first outer gear sleeve (101) and the second outer gear sleeve (102) are both integrally formed with a gear sleeve sleeve (110) and a flange base (120); an end cover step (111) and inner gear sleeve teeth (112) are provided on the inner side wall of the gear sleeve sleeve (110); a plurality of fastening bolt holes (121) are uniformly provided on the flange base (120); wherein, the first outer gear sleeve (101) is uniformly formed with limiting protrusions (122) on the end face of the flange base (120) at intervals of the fastening bolt holes (121); and the second outer gear sleeve (102) is also provided with a limiting protrusion (122) on the end face of the flange base (120) ) corresponding limiting groove (123); the outer wall of the inner gear ring (200) is formed with outer gear ring teeth (210), and the outer gear ring teeth (210) are correspondingly meshed and connected with the inner teeth of the gear sleeve (112); the sealing end cover (300) is embedded in the end cover step (111) between the first outer gear sleeve (101) or the second outer gear sleeve (102) and the inner gear ring (200), and the whole is an annular structure, and an annular deformation groove (310) is opened on the outward side, so that its cross section is U-shaped, and a sealing ring (320) is provided on the inner side wall of the deformation groove (310) close to the inner gear ring (200).

2. The gear coupling according to claim 1, characterized in that: A stud bolt (130) is provided through the fastening bolt holes (121) corresponding to the first outer tooth sleeve (101) and the second outer tooth sleeve (102), and a bolt sleeve (131) is provided between the stud bolt (130) and the inner side wall of the fastening bolt hole (121).

3. The gear coupling according to claim 1, characterized in that: The deformation groove (310) is provided with an oblique guide groove (311) at one end close to the end face step of the gear sleeve (110).

4. The gear coupling according to claim 1, characterized in that: The sealing end cover (300) is made of elastic sealing material.

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