Safety crowned tooth coupling

Abstract

The utility model discloses a safety crowned tooth coupling, which belongs to the technical field of couplings and particularly comprises a speed reducer end shaft sleeve, a speed reducer end connecting flange, a connecting ring with crowned teeth I on the outer wall, an inner gear ring I with inner teeth I on the inner wall, a connecting pipe and an inner gear ring II with inner teeth II on the inner wall which are connected in sequence, crowned teeth II are arranged on the outer wall of the motor end shaft sleeve; the speed reducer end connecting flange and the connecting ring are connected and fixed through a safety connecting piece, and a connecting shaft for preventing the speed reducer end connecting flange from being separated from the connecting ring is arranged in the connecting ring. Due to the arrangement of the safety connecting piece and the connecting shaft, when the safety connecting piece is broken, it can be guaranteed that the speed reducer end connecting flange and the connecting ring are still connected together through the connecting shaft, and the situation that the speed reducer end connecting flange abrades the connecting ring is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings, in particular to a safety drum-shaped gear coupling. Background Art

[0002] Drum gear coupling is a common rigid-flexible coupling with strong load-bearing capacity. The drum-shaped tooth surface improves the contact conditions of the external teeth, avoiding the disadvantages of straight tooth edge extrusion and stress concentration under angular displacement conditions. At the same time, it improves the friction and wear conditions of the tooth surface, reduces noise, and has the advantages of a long maintenance cycle. It has a wide range of applications.

[0003] The structure of the drum gear coupling mainly includes the reducer end sleeve, reducer end connecting flange, connecting ring, inner gear ring 1, connecting pipe, inner gear ring 2 and motor end sleeve, which are connected in sequence from one end to the other end.

[0004] When the required torque of the safety coupling exceeds the set value due to overload or mechanical failure, the bolts, pins, etc. used to connect the reducer end connecting flange and the connecting ring will break. After the bolts, pins, etc. of the conventional safety coupling break, the reducer end connecting flange and the connecting ring will separate from each other and, under the influence of gravity, make the two misaligned. Since the equipment does not stop immediately, it will cause extrusion and wear between the two, thereby causing damage to the connector or equipment. Utility Model Content

[0005] The purpose of the present utility model is to provide a safe drum gear coupling to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention adopts a technical solution: a safety-type drum gear coupling, comprising a reducer end sleeve, a reducer end connecting flange, a connecting ring with a drum gear 1 on the outer wall, an inner gear ring 1 with an inner gear 1 on the inner wall, a connecting pipe, an inner gear ring 2 with an inner gear 2 on the inner wall, and a motor end sleeve with a drum gear 2 on the outer wall, the drum gear 1 and the inner gear 1 meshing with each other to achieve the connection between the connecting ring and the inner gear ring 1, and the drum gear 2 and the inner gear 2 meshing with each other to achieve the connection between the inner gear ring 2 and the motor end sleeve;

[0007] The reducer end connecting flange and the connecting ring are connected and fixed by a safety connector, and a connecting component is provided in the coupling to prevent the reducer end connecting flange from being separated from the connecting ring.

[0008] Preferably, the connecting assembly includes a connecting shaft, one end of which passes through the reducer end connecting flange and is fixed to the connecting ring, and the other end of the connecting shaft supports the end face of the reducer end connecting flange away from the connecting ring.

[0009] Preferably, the inner gear ring 1 is tubular, and a limiting sealing ring is provided at both ends of the inner gear ring 1. The inner diameter of the limiting sealing ring is smaller than the maximum outer diameter of the drum-shaped tooth 1 and larger than the outer diameter of the annular surface of the connecting ring on which the drum-shaped tooth 1 is provided. At least one limiting sealing ring is detachably connected to the inner gear ring 1 to facilitate the assembly of the connecting ring into the inner gear ring 1.

[0010] The inner gear ring 1 and the inner gear ring 2 have the same structure.

[0011] Preferably, the connecting assembly further comprises a support bearing, the inner diameter of the connecting ring is larger than the outer diameter of the connecting shaft, the support bearing is arranged between the connecting ring and the connecting shaft, and the outer ring circumference of the support bearing is in contact with the inner wall of the connecting ring.

[0012] Preferably, at least two support bearings are provided, and a partition for separating the support bearings is provided between adjacent support bearings.

[0013] Preferably, a pressure cover and a bottom cover are further provided on the connecting ring, the supporting shaft is provided between the bottom cover and the pressure cover, and one end of the connecting shaft is connected to the bottom cover.

[0014] Preferably, a fixing piece is fixed on the end face of the reducer end connecting flange facing away from the connecting ring, one end of the safety connecting piece located on the reducer end connecting flange is fastened to the fixing piece by winding a steel wire, and one end of the safety connecting piece located on the connecting ring is placed in the connecting ring.

[0015] Preferably, a brake disc is provided between the connecting pipe and the second inner gear ring.

[0016] Preferably, the axes of the reducer end sleeve, reducer end connecting flange, connecting ring, connecting shaft, inner gear ring 1, connecting pipe, inner gear ring 2 and motor end sleeve are all on the same straight line.

[0017] Preferably, the reducer end connecting flange is rotatably connected to the connecting shaft.

[0018] The beneficial effects of the utility model are as follows: the utility model provides a safety connector and a connecting shaft. When the safety connector breaks, the connecting shaft can ensure that the reducer end connecting flange and the connecting ring are still connected together, thereby avoiding problems such as the reducer end connecting flange squeezing and wearing the connecting ring. In addition, since the reducer end connecting flange can rotate on the connecting shaft, there is no need to worry about the equipment being affected by torque during subsequent operation.

[0019] Among them, by providing a support bearing, the connection force surface between the connecting shaft and the connecting ring can be increased, and after the safety connector breaks, the stability of the reducer end connecting flange on the connecting shaft can be further ensured;

[0020] Among them, by adding a brake disc, this solution can be applied to a coupling with a brake disc;

[0021] Among them, since the safety connector and the fixing member are fastened by winding the steel wire, it can avoid the broken safety connector from flying out in the state of high-speed operation, causing personal and property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0023] Figure 2 This is a schematic structural diagram of a coupling with a brake disc according to the present invention;

[0024] Figure 3 It is a cross-sectional view of the utility model;

[0025] Figure 4 This is a cross-sectional view of the connection relationship between the reducer end sleeve, the reducer end connecting flange, the connecting ring, and the inner gear ring in the utility model;

[0026] Figure 5 This is a cross-sectional view of the connection between the inner gear ring and the limiting sealing ring in the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0028] In the figure: 1. Reducer end sleeve; 2. Reducer end connecting flange; 5. Inner gear ring 1; 6. Connecting pipe; 7. Inner gear ring 2; 8. Motor end sleeve; 9. Brake disc; 10. Safety connector; 11. Connecting shaft; 12. Bottom cover; 13. Support bearing; 14. Separator; 15. Pressure cover; 16. Fixing part; 51. Inner gear 1; 52. Limit sealing ring; 41. Drum gear 1; 71. Inner gear 2; 81. Drum gear 2. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0030] Example:

[0031] See Figure 1 、 Figure 3 、 Figure 4A safety-type drum gear coupling comprises a reducer-end sleeve 1, a reducer-end connecting flange 2, a connecting ring with a drum gear 41 on the outer wall, an inner gear ring 5 with an inner gear 51 on the inner wall, a connecting pipe 6, an inner gear ring 7 with an inner gear 71 on the inner wall, and a motor-end sleeve 8 with a drum gear 81 on the outer wall. The drum gear 41 and the inner gear 51 mesh with each other to achieve the connection between the connecting ring and the inner gear ring 5, and the drum gear 81 and the inner gear 71 mesh with each other to achieve the connection between the inner gear ring 7 and the motor-end sleeve 8.

[0032] The reducer end connecting flange 2 and the connecting ring are connected and fixed by a safety connecting piece 10, and a bottom cover 12 is provided on the connecting ring. A connecting assembly is provided in the coupling to prevent the reducer end connecting flange 2 from being separated from the connecting ring, and the connecting assembly includes a connecting shaft, one end of the connecting shaft passes through the reducer end connecting flange and is fixed to the connecting ring, and the other end of the connecting shaft supports the end face of the reducer end connecting flange away from the connecting ring, and the reducer end connecting flange 2 is rotatably connected to the connecting shaft 11, and one end of the connecting shaft 11 is connected to the bottom cover 12. The safety connecting piece 10 in this embodiment can be a bolt with a nut, and the connecting shaft 11 is also a bolt. A receiving groove for the head of the safety connecting piece 10 is provided on the reducer end connecting flange 2, and a threaded groove for matching the connecting shaft 11 is integrally formed on the bottom cover 12, so that the connecting shaft 11 and the bottom cover 12 can be fixed together by threaded connection, wherein the bottom cover 12 and the connecting ring can be fixed by bolts;

[0033] Among them, the axes of the reducer end sleeve 1, the reducer end connecting flange 2, the connecting ring, the connecting shaft 11, the inner gear ring 1 5, the connecting pipe 6, the inner gear ring 2 7 and the motor end sleeve 8 are all on the same straight line.

[0034] Among them, see Figure 5 The inner gear ring 1 5 is tubular, and a limiting sealing ring 52 is provided at both ends of the inner gear ring 1 5. The inner diameter of the limiting sealing ring 52 is smaller than the maximum outer diameter of the drum-shaped tooth 1 41, and larger than the outer diameter of the ring surface of the connecting ring on which the drum-shaped tooth 1 41 is provided. In this embodiment, one limiting sealing ring 52 is detachably connected to the inner gear ring 1 5 to facilitate the assembly of the connecting ring into the inner gear ring 1 5, and the other limiting sealing ring 52 is integrally formed with the inner gear ring 1 5; the inner gear ring 1 5 and the inner gear ring 2 7 have the same structure.

[0035] Among them, see Figure 3 、 Figure 4, the inner diameter of the connecting ring is larger than the outer diameter of the connecting shaft 11, and a support bearing 13 is arranged between the connecting ring and the connecting shaft 11, and the outer ring circumferential wall of the support bearing 13 is in contact with the inner wall of the connecting ring. At least two support bearings 13 are provided, and a pressure cover 15 is also provided on the connecting ring. The support shaft is arranged between the bottom cover 12 and the pressure cover 15, and a separator 14 for separating the support bearings 13 is provided between adjacent support bearings 13. There are two support bearings 13 in this embodiment, and the separator 14 in this embodiment includes two parts, one is a ring body sleeved on the connecting shaft 11, and the other part is a limiting groove for the support bearing 13 to enter and be fixed on the two end surfaces of the drum-toothed sleeve 4.

[0036] Among them, see Figure 6 A fixing part 16 is fixed on the end face of the reducer end connecting flange 2 facing away from the connecting ring. One end of the safety connecting part 10 located on the reducer end connecting flange 2 is fastened to the fixing part 16 by winding a steel wire. One end of the safety connecting part located on the connecting ring is placed in the connecting ring. In this embodiment, this end is placed in the internal tooth flange 3.

[0037] Among them, see Figure 2 A brake disc 9 may be provided between the connecting pipe 6 and the inner gear ring 2 7 .

[0038] Among them, the reducer end sleeve 1 and the reducer end connecting flange 2 are fixed by bolts, the internal gear flange 3 and the drum gear sleeve are fixed by bolts, the inner gear ring 1 5 and the connecting pipe 6 are fixed by bolts, and the connecting pipe 6 and the inner gear ring 2 7 are fixed by bolts.

[0039] Working process and principle:

[0040] When the safety connector 10 in this solution breaks, the connecting shaft 11 can ensure that the reducer end connecting flange 2 and the connecting ring are still connected together, avoiding problems such as the reducer end connecting flange 2 squeezing and wearing the connecting ring or falling off under high-speed operation.

[0041] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A safety drum gear coupling, characterized in that: The invention comprises a reducer end shaft sleeve (1), a reducer end connecting flange (2), a connecting ring having a drum-shaped tooth (41) on the outer wall, an inner gear ring (5) having an inner gear (51) on the inner wall, a connecting pipe (6), an inner gear ring (7) having an inner gear (71) on the inner wall, and a motor end shaft sleeve (8) having a drum-shaped tooth (81) on the outer wall, wherein the drum-shaped tooth (41) and the inner gear (51) are meshed with each other to realize the connection between the connecting ring and the inner gear ring (5), and the drum-shaped tooth (81) and the inner gear (71) are meshed with each other to realize the connection between the inner gear ring (7) and the motor end shaft sleeve (8); The reducer end connecting flange (2) and the connecting ring are connected and fixed via a safety connecting piece (10), and a connecting component is provided in the coupling to prevent the reducer end connecting flange (2) from being separated from the connecting ring.

2. A safety drum gear coupling according to claim 1, characterized in that: The connection assembly comprises a connection shaft (11), one end of which passes through the reducer end connection flange (2) and is fixed to the connection ring, and the other end of the connection shaft (11) supports the end surface of the reducer end connection flange (2) facing away from the connection ring.

3. A safety drum gear coupling according to claim 1, characterized in that: The inner gear ring (5) is tubular, and a limiting sealing ring (52) is provided at both ends of the inner gear ring (5), the inner diameter of the limiting sealing ring (52) is smaller than the maximum outer diameter of the drum-shaped tooth (41), and larger than the outer diameter of the ring surface of the connecting ring on which the drum-shaped tooth (41) is provided, and at least one limiting sealing ring (52) is detachably connected to the inner gear ring (5) so as to facilitate the assembly of the connecting ring into the inner gear ring (5); The inner gear ring 1 (5) and the inner gear ring 2 (7) have the same structure.

4. A safety drum gear coupling according to claim 2, characterized in that: The connection assembly also includes a support bearing (13), the inner diameter of the connection ring is larger than the outer diameter of the connection shaft (11), the support bearing (13) is arranged between the connection ring and the connection shaft (11), and the outer ring circumferential wall of the support bearing (13) is in contact with the inner wall of the connection ring.

5. A safety drum gear coupling according to claim 4, characterized in that: At least two support bearings (13) are provided, and a separator (14) for separating the support bearings (13) is provided between adjacent support bearings (13).

6. A safety drum gear coupling according to claim 4 or 5, characterized in that: A pressure cover (15) and a bottom cover (12) are also provided on the connecting ring, the supporting shaft is provided between the bottom cover (12) and the pressure cover (15), and one end of the connecting shaft (11) is connected to the bottom cover (12).

7. A safety drum gear coupling according to claim 1, characterized in that: A fixing piece (16) is fixed on the end surface of the reducer end connecting flange (2) facing away from the connecting ring, one end of the safety connecting piece (10) located on the reducer end connecting flange (2) is fastened to the fixing piece (16) by winding a steel wire, and one end of the safety connecting piece located on the connecting ring is placed in the connecting ring.

8. The safety drum gear coupling according to claim 1, characterized in that: A brake disc (9) is arranged between the connecting pipe (6) and the second inner gear ring (7).

9. A safety drum gear coupling according to claim 5, characterized in that: The axes of the reducer end shaft sleeve (1), the reducer end connecting flange (2), the connecting ring, the connecting shaft (11), the first inner gear ring (5), the connecting pipe (6), the second inner gear ring (7) and the motor end shaft sleeve (8) are all on the same straight line.

10. A safety drum gear coupling according to claim 1, characterized in that: The reducer end connecting flange (2) is rotatably connected to the connecting shaft (11).

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