Axial-size-adjustable parallel-structure elastic coupling

Abstract

The utility model discloses an axial size adjustable parallel structure elastic coupling, which comprises a bearing seat A, a support shaft, an output shaft sleeve, a bearing seat B, a radial bearing, an axial bearing, a shell, a rubber element, an outer backing ring and a flange plate, an inner backing ring is fixed on the right side of the bearing seat A through a bolt, and the shell is sleeved on the surface of the bearing seat A; according to the high-elasticity coupling, parallel installation of the elastic components is comprehensively considered, so that the high-elasticity coupling has a large torque transmission effect in a limited space, meanwhile, the coupling is provided with internal and external components which support each other, and the internal and external components can bear the gravity supporting effect of a universal shaft of a driving system and the coupling, so that the coupling is more flexible. One end of the supporting shaft is arranged to be of a spline structure and is in meshing transmission with an inner spline of the output shaft sleeve, axial movement of the elastic element of the parallel connection structure can be achieved, the function of adjusting the axial size is achieved, and meanwhile the complexity of installation and later maintenance is reduced through the design.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings, and in particular relates to a parallel structure elastic coupling with adjustable axial dimensions. Background Art

[0002] In daily ship drive systems, due to the complex structure of the ship's interior, it is usually difficult to set the prime mover and the driven machine in the same straight line or they need to span a long distance. At this time, a universal joint will be used to achieve this type of power transmission. When the diesel engine is used as the prime mover, a high-elastic coupling can be used to improve the torsional vibration characteristics of the system, thereby protecting the universal joint shaft and the driven machine from the damage of vibration loads beyond the range;

[0003] The limited installation space needs to be considered in the structural design. The parallel structure can improve the torque transmission capacity within the unit space. At the same time, the universal shaft itself is usually heavy and requires a sufficiently reliable support system, such as a load-bearing bearing structure. If the entire weight is hung on the rubber element, the rubber life will be shortened in long-term operation. In addition, the inclination angle of the universal shaft and the feasibility, convenience and protection of the overall installation also need to be taken into consideration.

[0004] To this end, the utility model proposes a parallel structure elastic coupling with adjustable axial size. Utility Model Content

[0005] The utility model aims to provide a parallel structure elastic coupling with adjustable axial size to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a parallel structure elastic coupling with adjustable axial size, comprising a bearing seat A, a support shaft, an output shaft sleeve, a bearing seat B, a radial bearing, an axial bearing, a housing, a rubber element, an outer gasket and a flange, wherein an inner gasket is fixed to the right side of the bearing seat A by bolts, the outer housing is sleeved on the surface of the bearing seat A, and a radial bearing and an axial bearing are connected between the bearing seat A and the housing, the two rubber elements are sleeved on the outside of the inner gasket, and the housing, the outer gasket and the flange are fixed by bolts to achieve the fastening of the rubber element. The output sleeve is fixed to the left side of the bearing seat A by bolts, and the right end of the support shaft is meshed with the output sleeve through a spline to realize transmission. The bearing seat B is arranged at the left end of the support shaft. Two cylindrical roller bearings are also mounted on the support shaft, and a spacer ring B is arranged between the two cylindrical roller bearings. The two ends of the bearing seat B are respectively fixed with a bearing end cover A and a bearing end cover B by bolts, and a spacer ring A is also arranged between the bearing end cover A and the cylindrical roller bearing on the right side. Two round nuts are also mounted on the surface of the support shaft relative to the right side of the cylindrical roller bearing.

[0007] Preferably, a safety protection cover is also installed on the right side surface of the bearing seat B, and the safety protection cover covers the bearing seat A and the flange on the inside.

[0008] Preferably, a plurality of bolt holes are provided at the right end edge of the safety protection cover shell.

[0009] Preferably, it also includes a disassembly and assembly structure, which is arranged between the safety protection cover shell and the bearing seat B. The disassembly and assembly structure includes a connecting block, an inner groove, a spring and a right-angled trapezoidal telescopic block. Two connecting blocks are symmetrically fixed to the left end surface of the safety protection cover shell, and an inner groove is opened inside the connecting block. A right-angled trapezoidal telescopic block is movably installed in the inner groove through a spring. A connecting slot corresponding to the connecting block is opened through the right end surface of the bearing seat B, and the connecting block passes through the connecting slot to the left side of the bearing seat B. The end of the right-angled trapezoidal telescopic block pops out to the surface of the connecting block and is stuck at the left edge of the bearing seat B.

[0010] Preferably, a T-shaped shaft is fixed to the right end surface of the bearing seat B, and a rubber protective baffle is rotatably sleeved on the T-shaped shaft, and the rubber protective baffle covers and shields the right-angle trapezoidal telescopic block.

[0011] Preferably, the round nut is threadedly connected to the support shaft.

[0012] Preferably, a flange interface is provided at the left end of the support shaft.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the high-elastic coupling of the utility model comprehensively considers the parallel installation of its elastic components, so that it has a greater torque transmission effect in a limited space, and at the same time, the structure is provided with mutually supporting internal and external components of the coupling, which can bear the gravity support from the universal shaft of the drive system and its own gravity, and one end of its support shaft is arranged as a spline structure and meshing transmission with the internal spline of the output shaft sleeve, which can realize the axial movement of the elastic element of the parallel structure, thereby realizing the axial size adjustable function, and this design also reduces the complexity of installation and subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the utility model;

[0015] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle A area;

[0016] Figure 3 For this utility model Figure 1 A partial enlarged view of the middle B area;

[0017] Figure 4For this utility model Figure 3 A partial enlarged view of the middle C area;

[0018] In the figure: 1. bearing seat A; 2. radial bearing; 3. axial bearing; 4. outer shell; 5. rubber element; 6. outer gasket; 7. flange; 8. inner gasket; 9. safety protection cover; 91. connecting plug; 92. inner groove; 93. spring; 94. right-angle trapezoidal telescopic block; 10. output sleeve; 11. support shaft; 12. bearing end cover A; 13. round nut; 14. spacer ring A; 15. bearing seat B; 151. connecting slot; 152. T-shaped shaft; 153. rubber protective strip; 16. spacer ring B; 17. cylindrical roller bearing; 18. bearing end cover B. DETAILED DESCRIPTION

[0019] 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 creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] See also Figures 1 to 3, which is the first embodiment of the utility model, and this embodiment provides a technical solution: a parallel structure elastic coupling with adjustable axial size, comprising a bearing seat A1, a support shaft 11, an output shaft sleeve 10, a bearing seat B15, a radial bearing 2, an axial bearing 3, a shell 4, a rubber element 5, an outer gasket 6 and a flange 7. The flange 7 can be fastened to an external diesel engine flywheel by bolts when used later. An inner gasket 8 is fixed to the right side of the bearing seat A1 by bolts. The shell 4 is sleeved on the surface of the bearing seat A1, and a radial bearing 2 and an axial bearing 3 are connected between the bearing seat A1 and the shell 4 to support the weight of the inner and outer components. Two rubber elements 5 are sleeved on the outer side of the inner gasket 8, and the shell 4, the outer gasket 6 and the flange 7 are fixed by bolts to realize the fastening connection of the rubber element 5. The fastening of the inner and outer sides realizes the parallel torque transmission of the two rubber elements 5. Compared with the single-row rubber element, the torque transmission capacity is doubled. The output shaft sleeve 10 is fixed to the left side of the bearing seat A1 by bolts, and the right side of the support shaft 11 is fixed by bolts. The end of the support shaft 11 is meshed with the output shaft sleeve 10 through a spline to realize transmission, and the left end of the support shaft 11 can be connected to the external universal shaft power input end through a flange. The bearing seat B15 is arranged at the left end of the support shaft 11. Two cylindrical roller bearings 17 are also installed on the support shaft 11 to support the weight of the universal shaft, and a spacer ring B16 is arranged between the two cylindrical roller bearings 17. The spacer ring B16 is used between the two cylindrical roller bearings 17 to achieve a balanced force arrangement. The two ends of the bearing seat B15 are respectively The bearing end cover A12 and the bearing end cover B18 are fixed by bolts. The bearing end cover B18 also locks the position of the left cylindrical roller bearing 17. A spacer ring A14 is also arranged between the bearing end cover A12 and the cylindrical roller bearing 17 on the right. Two round nuts 13 are also installed on the surface of the support shaft 11 relative to the right side of the cylindrical roller bearing 17. The cylindrical roller bearing 17 on the right is locked in position with the bearing end cover A12 by bolts, and the position of the component is locked by two round nuts 13.

[0022] Among them, a safety protection cover shell 9 is also installed on the right surface of the bearing seat B15, and the safety protection cover shell 9 covers the bearing seat A1 and the flange 7 on the inside. The right end of the safety protection cover shell 9 can be fastened to the cover of the diesel engine to achieve protection, shading and dust prevention of the power system.

[0023] Among them, a plurality of bolt holes are opened at the right end edge of the safety protection cover shell 9 for subsequent fastening connection with the diesel engine cover shell.

[0024] The round nut 13 is threadedly connected to the support shaft 11 to achieve the rotation and screwing of the round nut 13 .

[0025] The left end of the support shaft 11 is provided with a flange interface for subsequent connection to the power input end of the universal shaft.

[0026] The overall power transmission process of the utility model is as follows: power is input into the structure through the flange 7 by the prime mover, and is transmitted to the rubber element 5 through the fastening bolts between the flange 7 and the housing 4. Then the power is divided into two paths, one of which is transmitted to the bearing seat A1 along the left rubber element 5, and the other is transmitted to the inner gasket 8 along the right rubber element 5. Then, the power is also transmitted to the bearing seat A1 by the fastening bolts between the inner gasket 8 and the bearing seat A1. At this point, the two powers converge to double the power. Under the action of the fastening bolts between the output sleeve 10 and the bearing seat A1, the power is transmitted to the output sleeve 10, and the output sleeve 10 is transmitted to the support shaft 11 through the spline, and then output to the universal shaft.

[0027] The two cylindrical roller bearings 17 on the support shaft 11 are arranged to bear the gravity from the universal joint, the radial bearing 2 and the axial bearing 3 at the housing 4 are used to bear the gravity of their own structures, and the spline engagement between the output sleeve 10 and the support shaft 11 enables the axial size to be adjusted over a wide range.

[0028] Example 2

[0029] See also Figures 1 to 4 , which is the second embodiment of the utility model, is based on the previous embodiment, and the difference is that the safety protection cover shell 9 and the bearing seat B15 can be quickly disassembled and assembled by setting a disassembly and assembly structure.

[0030] Specifically, it also includes a disassembly and assembly structure, which is arranged between the safety protection cover shell 9 and the bearing seat B15. The disassembly and assembly structure includes a connecting block 91, an inner groove 92, a spring 93 and a right-angled trapezoidal telescopic block 94. Two connecting blocks 91 are symmetrically welded and fixed on the left end surface of the safety protection cover shell 9. An inner groove 92 is opened inside the connecting block 91, and a right-angled trapezoidal telescopic block 94 is movably installed in the inner groove 92 through a spring 93. A connecting slot 151 corresponding to the connecting block 91 is opened on the right end surface of the bearing seat B15. The connecting block 91 passes through the connecting slot 151 to the left side of the bearing seat B15. The end of the right-angled trapezoidal telescopic block 94 pops out to the surface of the connecting block 91 and is stuck at the left edge of the bearing seat B15. The safety protection cover shell 9 and the connecting block 91 can be stably limited to ensure the connection stability of the safety protection cover shell 9 and the bearing seat B15.

[0031] Among them, a T-shaped shaft 152 is also fixed to the right end surface of the bearing seat B15, and a rubber protective baffle 153 is rotatably sleeved on the T-shaped shaft 152. The rubber protective baffle 153 covers and shields the right-angled trapezoidal telescopic block 94. Under the shielding effect of the rubber protective baffle 153, foreign matter from the outside can be prevented from contacting the right-angled trapezoidal telescopic block 94 to a certain extent, thereby ensuring the connection stability between the safety protection cover 9 and the bearing seat B15. If the safety protection cover 9 and the bearing seat B15 are to be disassembled later, it is only necessary to first remove the rubber protective baffle 153. The baffle 153 rotates ninety degrees around the T-shaped shaft 152, so that the rubber protective baffle 153 no longer blocks the right-angled trapezoidal telescopic block 94. At this time, the end of the right-angled trapezoidal telescopic block 94 can be pressed down so that the right-angled trapezoidal telescopic block 94 is pressed into the inner groove 92, thereby no longer limiting the connecting block 91. At this time, the safety protection cover shell 9 and the bearing seat B15 can be pried apart, so that the connecting block 91 can be pulled out from the connecting slot 151, thereby realizing the rapid disassembly and assembly of the safety protection cover shell 9 and the bearing seat B15.

[0032] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A parallel structure elastic coupling with adjustable axial dimension, characterized in that: The invention comprises a bearing seat A (1), a support shaft (11), an output shaft sleeve (10), a bearing seat B (15), a radial bearing (2), an axial bearing (3), a housing (4), a rubber element (5), an outer gasket (6) and a flange (7), wherein an inner gasket (8) is fixed to the right side of the bearing seat A (1) by bolts, the housing (4) is sleeved on the surface of the bearing seat A (1), and the radial bearing (2) and the axial bearing (3) are connected between the bearing seat A (1) and the housing (4), the two rubber elements (5) are sleeved on the outer side of the inner gasket (8), and the housing (4), the outer gasket (6) and the flange (7) are fixed by bolts to achieve a fastening connection of the rubber element (5), and the output shaft sleeve (10) is fixed to the outer side by bolts. The left side of the bearing seat A (1) and the right end of the support shaft (11) is meshed with the output shaft sleeve (10) through a spline to realize transmission. The bearing seat B (15) is arranged at the left end of the support shaft (11). Two cylindrical roller bearings (17) are also sleeved and installed on the support shaft (11), and a spacer ring B (16) is arranged between the two cylindrical roller bearings (17). The two ends of the bearing seat B (15) are respectively fixed with a bearing end cover A (12) and a bearing end cover B (18) by bolts. A spacer ring A (14) is also arranged between the bearing end cover A (12) and the cylindrical roller bearing (17) on the right side. Two round nuts (13) are also sleeved and installed on the surface of the support shaft (11) relative to the right side of the cylindrical roller bearing (17).

2. The parallel structure elastic coupling with adjustable axial dimension according to claim 1, characterized in that: A safety protection cover (9) is also installed on the right side surface of the bearing seat B (15), and the safety protection cover (9) covers the bearing seat A (1) and the flange (7) on the inner side.

3. The parallel structure elastic coupling with adjustable axial dimension according to claim 2, characterized in that: A plurality of bolt holes are provided at the right end edge of the safety protection cover shell (9).

4. The parallel structure elastic coupling with adjustable axial dimension according to claim 2, characterized in that: It also includes a disassembly and assembly structure, which is arranged between the safety protection cover shell (9) and the bearing seat B (15).

5. The parallel structure elastic coupling with adjustable axial dimension according to claim 4, characterized in that: The disassembly and assembly structure comprises a connecting block (91), an inner groove (92), a spring (93) and a right-angled trapezoidal telescopic block (94); two connecting blocks (91) are symmetrically fixed on the left end surface of the safety protection cover shell (9); an inner groove (92) is provided inside the connecting block (91); a right-angled trapezoidal telescopic block (94) is movably installed in the inner groove (92) through a spring (93); a connecting slot (151) corresponding to the connecting block (91) is penetrated through the right end surface of the bearing seat B (15); the connecting block (91) penetrates to the left side of the bearing seat B (15) through the connecting slot (151); the end of the right-angled trapezoidal telescopic block (94) pops out to the surface of the connecting block (91) and is clamped at the left edge of the bearing seat B (15).

6. The parallel structure elastic coupling with adjustable axial dimension according to claim 5, characterized in that: A T-shaped shaft (152) is also fixed to the right end surface of the bearing seat B (15), and a rubber protective baffle (153) is rotatably sleeved on the T-shaped shaft (152), and the rubber protective baffle (153) covers and shields the right-angle trapezoidal telescopic block (94).

7. The parallel structure elastic coupling with adjustable axial dimension according to claim 1, characterized in that: The round nut (13) is threadedly connected to the support shaft (11).

8. The parallel structure elastic coupling with adjustable axial dimension according to claim 1, characterized in that: The left end of the support shaft (11) is provided with a flange interface.

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