Coupling and transmission equipment

Abstract

The utility model provides a coupler and transmission equipment, and relates to the technical field of gearbox couplings. The transmission equipment comprises a coupler, and the coupler comprises a motor end half-coupling with one end connected with a motor output shaft and the other end provided with a motor end connecting part; one end of the gear box end half-coupling is connected with the gear box input shaft, and the other end is provided with a gear box end connecting part; the elastic assembly is arranged between the motor end connecting part and the gear box end connecting part; the connecting assembly is used for connecting the motor end connecting part, the elastic assembly and the gear box end connecting part together; the connecting assembly is in transmission contact with the elastic assembly. The elastic assembly has certain elasticity and can play a role in compensating centering errors during installation, so that the requirement on installation precision is reduced, and the operability is good; in the starting and running process of the motor, the elastic assembly can receive part of acting force and generate certain deformation, so that the starting torque is reduced, the transmission impact is relieved, and the effect of protecting the gear box and the motor is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gearbox coupling technology, and in particular to a coupling and transmission device. Background Technology

[0002] New energy locomotives are new types of low-carbon and environmentally friendly locomotives that use electric motors to drive the vehicle instead of the original internal combustion engines. Their power input is the electric motor. In the transmission system of this locomotive, the electric motor needs to transmit power to the gearbox to split the power and speed.

[0003] In existing technology, there are two main common connection methods between the motor output shaft and the gearbox input shaft:

[0004] The first type involves a direct connection between internal and external splines. This involves fabricating internal and external splines on the ends of both the motor output shaft and the gearbox input shaft, which are then aligned, installed, and inserted together. The main problem with this method is that because spline connections lack alignment compensation, they require high installation precision, have poor operability, and are purely rigid connections. This makes them ineffective at mitigating impacts and protecting the gearbox and motor during system startup and operation.

[0005] The second type is the drum gear coupling connection. Although the drum gear coupling can compensate for the alignment error in this solution, it still has disadvantages such as relatively complex structure, inability to reduce impact vibration, and high noise. Utility Model Content

[0006] In view of the above situation, this utility model provides a coupling and transmission device, which aims to solve the shortcomings of the existing common connection method between the motor output shaft and the gearbox input shaft as pointed out in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model provides a coupling, comprising:

[0009] The motor end half coupling has one end connected to the motor output shaft and the other end has a motor end connection part;

[0010] The gearbox end half coupling has one end connected to the gearbox input shaft and the other end has a gearbox end connecting part;

[0011] A flexible component is disposed between the motor end connection and the gearbox end connection;

[0012] A connecting assembly is used to connect the motor end connection, the elastic component, and the gearbox end connection together; the connecting assembly and the elastic component are in transmission contact.

[0013] In some embodiments of this utility model, the connecting component includes:

[0014] Multiple mounting hole groups, including first mounting holes and second mounting holes used for coaxial cooperation; multiple first mounting holes and second mounting holes are evenly distributed on both the motor end connection part and the gearbox end connection part, and a second mounting hole is provided between two adjacent first mounting holes on the same object;

[0015] One end of the bolt can pass through the first mounting hole on the motor end connection and the second mounting hole on the gearbox end connection in sequence; or, one end of the bolt can pass through the first mounting hole on the gearbox end connection and the second mounting hole on the motor end connection in sequence.

[0016] In some embodiments of this utility model, the bolt is a reamed hole bolt.

[0017] In some embodiments of this utility model, a locking nut is attached to the bolt.

[0018] In some embodiments of this utility model, the elastic component includes an elastic sheet having a plurality of uniformly arranged through holes through which bolts can pass.

[0019] In some embodiments of this utility model, the elastic sheet is a stainless steel diaphragm.

[0020] In some embodiments of this invention, the elastic sheet is in the form of a lace ring.

[0021] In some embodiments of this utility model, the elastic component further includes a wear-resistant sleeve embedded in the through hole; the bolt can pass through the wear-resistant sleeve axially.

[0022] In some embodiments of this utility model, one end of the wear-resistant sleeve has a wear-resistant ring, which is located outside the through hole, and the outer diameter of the wear-resistant ring is larger than the diameter of the through hole;

[0023] The elastic component also includes a positioning ring, which is fitted onto one end of the wear-resistant sleeve, and the positioning ring and the wear-resistant ring abut against the opposite sides of the elastic sheet.

[0024] In some embodiments of this utility model, the positioning ring is made of a wear-resistant material.

[0025] The embodiments of this utility model have at least the following advantages or beneficial effects:

[0026] The connecting component and the elastic component are the force transmission medium between the motor end half-coupling and the gearbox end half-coupling. After connecting the output shaft of the motor and the input shaft of the gearbox through the above-mentioned coupling, the elastic component has a certain degree of elasticity. Therefore, on the one hand, it can compensate for the alignment error during installation, thereby reducing the requirements for installation accuracy and improving operability; on the other hand, during the motor start-up and operation, the elastic component can accept part of the force and generate a certain deformation, thereby reducing the starting torque and mitigating transmission impact, thus protecting the gearbox and the motor.

[0027] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the coupling structure;

[0029] Figure 2 for Figure 1 The right view;

[0030] Figure 3 This is a schematic diagram of the structure of the elastic component;

[0031] Figure 4 for Figure 3 A sectional view along the BB direction;

[0032] Figure 5 This is a schematic diagram of the bolt structure.

[0033] icon:

[0034] 1-Motor end half coupling, 11-Motor end connecting part,

[0035] 2-Gearbox end half coupling, 21-Gearbox end connecting part, 22-Labyrinth groove,

[0036] 31-Elastic sheet, 32-Wear-resistant sleeve, 321-Wear-resistant ring, 33-Positioning ring,

[0037] 41-First mounting hole, 42-Second mounting hole, 43-Bolt, 431-Threaded section, 432-Positioning section, 44-Anti-loosening nut. Detailed Implementation

[0038] The present invention will be further described in detail below through specific embodiments:

[0039] Example

[0040] See Figures 1-5This embodiment provides a transmission device installed in a new energy locomotive. The transmission device includes a motor, a gearbox, and a coupling for connecting the motor and the gearbox.

[0041] The coupling includes a motor end half coupling 1, a gearbox end half coupling 2, an elastic component, and a connecting component.

[0042] One end of the motor end half-coupling 1 is interference-fitted to the motor output shaft, and the other end has a motor end connecting portion 11. The interference-fitted connection between the motor end half-coupling 1 and the motor output shaft is safe and reliable. In this embodiment, the first connecting portion is an annular structure formed by the radially outward extension of the end of the motor end half-coupling 1.

[0043] One end of the gearbox end half-coupling 2 is interference-fitted to the gearbox input shaft, and the other end has a gearbox end connecting portion 21. The interference-fit connection between the gearbox end half-coupling 2 and the gearbox input shaft is safe and reliable. In this embodiment, the gearbox end connecting portion 21 is an annular structure formed by the radially outward extension of the end of the gearbox end half-coupling 2; the end of the gearbox end half-coupling 2 away from the motor end half-coupling 1 has a labyrinth groove 22.

[0044] The elastic component is disposed between the motor end connection 11 and the gearbox end connection 21.

[0045] The connecting assembly is used to connect the motor end connecting part 11, the elastic component and the gearbox end connecting part 21 together; the connecting assembly and the elastic component are in transmission contact.

[0046] The connecting component and the elastic component are the force transmission medium between the motor end half coupling 1 and the gearbox end half coupling 2. After connecting the output shaft of the motor and the input shaft of the gearbox through the above-mentioned coupling, the elastic component has a certain degree of elasticity. Therefore, on the one hand, it can compensate for the alignment error during installation, thereby reducing the requirements for installation accuracy and improving operability; on the other hand, during the motor start-up and operation, the elastic component can accept part of the force and generate a certain deformation, thereby reducing the starting torque and mitigating transmission impact, thus protecting the gearbox and the motor.

[0047] The connection assembly includes mounting holes and bolts 43.

[0048] There are multiple mounting hole groups, including first mounting holes 41 and second mounting holes 42 used for coaxial cooperation; multiple first mounting holes 41 and second mounting holes 42 are evenly distributed on the motor end connection part 11 and the gearbox end connection part 21, and a second mounting hole 42 is provided between two adjacent first mounting holes 41 located on the same object.

[0049] One end of the bolt 43 is threaded with a lock nut 44 after passing through the first mounting hole 41 on the motor end connection part 11 and the second mounting hole 42 on the gearbox end connection part 21 in sequence; or, one end of the bolt 43 is threaded with a lock nut 44 after passing through the first mounting hole 41 on the gearbox end connection part 21 and the second mounting hole 42 on the motor end connection part 11 in sequence.

[0050] In this embodiment, bolt 43 is a reamed hole bolt 43, which includes a threaded section 431 and a non-threaded positioning section 432 connected to each other. The diameter of the threaded section 431 is smaller than the diameter of the positioning section 432. The positioning section 432 can enter the first mounting hole 41, and the threaded section 431 can pass through the second mounting hole 42.

[0051] As can be seen from the above, two adjacent bolts 43 can be inserted from the left and right directions respectively. Figure 1 The bolt 43 (in the left-right direction) is inserted into the mounting hole group to connect the motor end connection part 11 and the gearbox end connection part 21, resulting in better connection stability and a more uniform overall mass distribution of the coupling. It should be noted that although an anti-loosening nut 44 is provided in this embodiment, there is still an objectively certain gap between the bolt 43 and the corresponding component.

[0052] The elastic component includes an elastic sheet 31, a wear-resistant sleeve 32, and a positioning ring 33.

[0053] The elastic sheet 31 has multiple evenly arranged through holes through which the bolt 43 can pass. In this embodiment, the elastic sheet 31 is a stainless steel diaphragm, and the elastic sheet 31 is in the shape of a lace ring (e.g., Figure 3 (As shown). Bolt 43 can pass through and contact the elastic plate 31, thereby facilitating the transfer of some of the force from the motor to the elastic plate 31, which serves to buffer, reduce transmission impact, and protect the gearbox and motor.

[0054] The wear-resistant sleeve 32 is embedded in the through hole; one end of the wear-resistant sleeve 32 has a wear-resistant ring 321, which is located outside the through hole, and the outer diameter of the wear-resistant ring 321 is larger than the diameter of the through hole; the bolt 43 can pass through the wear-resistant sleeve 32 axially.

[0055] The positioning ring 33 is fitted onto one end of the wear-resistant sleeve 32, and the positioning ring 33 and the wear-resistant ring 321 respectively abut against the opposite sides of the elastic piece 31. Both the positioning ring 33 and the wear-resistant sleeve 32 are made of wear-resistant material and are not easily damaged by friction.

[0056] The wear-resistant sleeve 32 reinforces the through hole, which is similar to embedding a metal or plastic ring into the hole after it is made in a curtain to reinforce it and prevent tearing. In other words, the wear-resistant sleeve 32 increases the service life of the elastic sheet 31.

[0057] The presence of the wear-resistant ring 321 and the positioning ring 33 facilitates the installation of the wear-resistant sleeve 32 and separates the elastic plate 31, the motor end connection 11, and the gearbox end connection 21, thus preventing wear on the elastic plate 31 and extending its service life. At the same time, it also ensures that the elastic plate 31 can undergo a certain deformation to play its buffering role.

[0058] In summary, this embodiment has at least the following beneficial effects:

[0059] I. The connecting component and the elastic component are the force transmission medium between the motor end half-coupling 1 and the gearbox end half-coupling 2. After connecting the output shaft of the motor and the input shaft of the gearbox through the above-mentioned coupling, the elastic component has a certain degree of elasticity. Therefore, on the one hand, it can compensate for the alignment error during installation, thereby reducing the requirements for installation accuracy and improving operability; on the other hand, during the motor start-up and operation, the elastic component can accept part of the force and generate a certain deformation, thereby reducing the starting torque and mitigating transmission impact, thus protecting the gearbox and the motor.

[0060] 2. The motor end half-coupling 1 and the gearbox end half-coupling 2 are connected by a connecting component and a flexible component, making installation convenient.

[0061] III. The connecting assembly includes a set of mounting holes and bolts 43, with two adjacent bolts 43 respectively accessible from the left and right directions. Figure 1 (As shown in the left and right directions) Insert it into the mounting hole group to connect the motor end connection part 11 and the gearbox end connection part 21, resulting in better connection stability and a more uniform overall mass distribution of the coupling.

[0062] Third, the flexible components can be customized as standard parts for easy replacement and maintenance.

[0063] V. The coupling has a simple overall structure, regular shape, and uniform mass distribution. The entire coupling has undergone dynamic balancing tests and its dynamic balancing accuracy can reach G2.5 or higher, resulting in high transmission smoothness.

[0064] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. For those skilled in the art, this utility model can have various modifications and variations. Without conflict, the embodiments and features described in this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coupling, characterized in that The coupling comprises: a motor end half-coupling, one end of which is connected with a motor output shaft and the other end of which has a motor end connecting part; a gear box end half-coupling, one end of which is connected with a gear box input shaft and the other end of which has a gear box end connecting part; an elastic assembly arranged between the motor end connecting part and the gear box end connecting part; a connecting assembly for connecting the motor end connecting part, the elastic assembly and the gear box end connecting part together; the connecting assembly is in transmission contact with the elastic assembly.

2. The coupling according to claim 1, characterized in that The connecting assembly comprises: a plurality of mounting hole groups, each of which comprises a first mounting hole and a second mounting hole used coaxially; the motor end connecting part and the gear box end connecting part are both uniformly provided with a plurality of the first mounting holes and the second mounting holes, and the second mounting hole is arranged between two adjacent first mounting holes on the same object; a bolt, one end of which can pass through the first mounting hole on the motor end connecting part and the second mounting hole on the gear box end connecting part in sequence; or one end of the bolt can pass through the first mounting hole on the gear box end connecting part and the second mounting hole on the motor end connecting part in sequence.

3. The coupling of claim 2, wherein, The bolt is a hinge hole bolt.

4. The coupling of claim 2, wherein, A lock nut is connected to the bolt.

5. Coupling according to any of claims 2 to 4, characterized in that The elastic assembly comprises an elastic sheet, and the elastic sheet is provided with a plurality of through holes arranged uniformly and capable of being passed through by the bolt.

6. The coupling of claim 5 wherein, The elastic sheet is a stainless steel sheet.

7. The coupling of claim 5 wherein, The elastic sheet is in a lace ring shape.

8. The coupling of claim 5 wherein, The elastic assembly further comprises a wear-resistant sleeve embedded in the through hole, and the bolt can pass through the wear-resistant sleeve axially.

9. The coupling according to claim 8, wherein one end of the wear-resistant sleeve is provided with a wear-resistant ring, the wear-resistant ring is located outside the through hole, and the outer diameter of the wear-resistant ring is greater than the diameter of the through hole; the elastic assembly further comprises a positioning ring, the positioning ring is sleeved on one end of the wear-resistant sleeve, and the positioning ring and the wear-resistant ring abut against opposite sides of the elastic sheet, respectively.

10. The coupling of claim 9, wherein, The positioning ring is made of wear-resistant material.

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