Shock-resistant motor shaft

Abstract

The utility model discloses an anti-shock motor shaft, which relates to the technical field of motor shafts and comprises a motor shaft, the motor shaft comprises a motor rotating shaft and end rotating shafts, the end rotating shafts are arranged at two ends of the motor rotating shaft, the diameter of each end rotating shaft is smaller than that of the motor rotating shaft, a motor shell is arranged outside the motor shaft, and a shock absorption mechanism is arranged between the motor shaft and the motor shell. Bearings for reducing the rotation resistance of the motor shaft are fixedly mounted in two ends of the motor shell; the damping mechanism comprises a hollow rubber ring arranged between the inner side of the bearing and the outer side of the end rotating shaft, an annular air bag fixedly arranged in a cavity of the rubber ring and used for buffering and absorbing energy of the motor shaft, and a plurality of springs fixedly arranged in the annular air bag and used for buffering the motor shaft. Through the energy absorption of the rubber ring and the annular air bag and the connection of the connecting mechanism, the resilience of the spring can be reduced, the damping effect on the motor shaft is improved, and the resistance of the motor shaft during rotation can be reduced by the bearing, so that the service life of the motor shaft is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motor shafts, in particular to an earthquake-resistant motor shaft. Background Art

[0002] The motor rotating shaft refers to the rotating shaft on the motor rotor, also known as the motor rotor shaft or the motor shaft. The motor shaft is the core component of the motor's rotational motion, and its main function is to convert the electrical energy of the motor into mechanical energy, thereby driving the load to perform rotational, reciprocating motions, etc.

[0003] The patent with the publication number CN215733860U discloses "an earthquake-resistant stepping motor shaft, which relates to the technical field of motor shafts and includes a motor rotating shaft. At both ends of the motor rotating shaft, end rotating shafts with a diameter smaller than that of the motor rotating shaft are coaxially installed. The end rotating shafts are coaxially and movably sleeved with shock-absorbing ring plates. A plurality of shock-absorbing springs are installed on the ring surface of the shock-absorbing ring plates. A fixed ring plate is sleeved on the ring surface of the shock-absorbing ring plates. An activity chamber adapted to the shock-absorbing ring plates is opened in the inner cavity of the fixed ring plate. One ends of the plurality of shock-absorbing springs away from the shock-absorbing ring plates are connected to the inner cavity of the fixed ring plate. By sleeving shock-absorbing ring plates on the end rotating shafts at both ends of the motor rotating shaft and arranging a plurality of shock-absorbing springs between the shock-absorbing ring plates and the fixed ring plate, when the motor rotating shaft rotates and generates vibrations, the shock-absorbing ring plates displace, causing the corresponding shock-absorbing springs to compress, so as to buffer and damp the vibrations of the motor rotating shaft."

[0004] Regarding the above related technologies, the inventor believes that it buffers and dampens the vibrations of the motor shaft through springs, but the springs will rebound after being deformed by vibrations, resulting in poor shock-absorbing effects on the motor shaft. Therefore, it needs to be improved. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the utility model provides an earthquake-resistant motor shaft, and the specific technical solution is as follows:

[0006] An earthquake-resistant motor shaft includes a motor shaft. The motor shaft includes a motor rotating shaft and end rotating shafts provided at both ends of the motor rotating shaft and having a diameter smaller than that of the motor rotating shaft. An outer side of the motor shaft is provided with a motor housing. A shock-absorbing mechanism is provided between the motor shaft and the motor housing. Bearings for reducing the rotational resistance of the motor shaft are fixedly installed at both ends inside the motor housing. The shock-absorbing mechanism includes a rubber ring with a hollow interior provided between the inner side of the bearing and the outer side of the end rotating shaft, an annular airbag fixedly provided in the cavity of the rubber ring for buffering and absorbing energy of the motor shaft, and a plurality of springs fixedly provided in the annular airbag for buffering the motor shaft. A connection mechanism is provided between the bearing and the end rotating shaft.

[0007] By adopting the above technical solution, the energy absorption of components such as the annular airbag and the buffering of the spring can improve the shock absorption effect on the motor shaft, and the bearing can reduce the resistance when the motor shaft rotates, thereby prolonging the service life of the motor shaft.

[0008] Optionally, the motor rotating shaft is located inside the motor housing, and the motor rotating shaft, the end rotating shaft and the motor housing are coaxial. A connecting ring plate is rotatably arranged inside the bearing, and an annular groove is formed on the side of the connecting ring plate away from the motor rotating shaft.

[0009] By adopting the above technical solution, the bearing can connect the motor housing and the connecting ring plate.

[0010] Optionally, the connecting mechanism includes an annular plate fixedly arranged on the outer wall of the end rotating shaft and buckled in the annular groove, and a plurality of positioning blocks fixedly arranged at one end of the annular plate and fittingly inserted into the annular groove. A shock-absorbing rubber for further shock absorption of the motor shaft is fixedly arranged between the annular groove of the connecting ring plate, the annular plate and the positioning blocks.

[0011] By adopting the above technical solution, after the motor shaft rotates, it will drive components such as the connecting ring plate to rotate accordingly. The shock-absorbing rubber can not only elastically connect components such as the annular plate and the connecting ring, but also further shock-absorb the motor shaft.

[0012] Optionally, a plurality of first insertion blocks are fixedly arranged on the inner circle of the rubber ring, a plurality of second insertion blocks are fixedly arranged on the outer circle of the rubber ring, a plurality of first insertion holes are formed on the outer wall of the end rotating shaft, and a plurality of second insertion holes are formed on the inner wall of the connecting ring plate. The first insertion blocks are fittingly inserted into the first insertion holes of the end rotating shaft, and the second insertion blocks are fittingly inserted into the second insertion holes of the connecting ring plate.

[0013] By adopting the above technical solution, after the first insertion block is inserted into the corresponding first insertion hole, the end rotating shaft and the rubber ring can be connected. After the second insertion block is inserted into the corresponding second insertion hole, the rubber ring and the connecting ring plate can be connected.

[0014] In summary, the present utility model includes at least one of the following beneficial effects:

[0015] 1. Through the energy absorption of the rubber ring and the annular airbag, and the connection of the connecting mechanism, the rebound of the spring can be reduced, and the energy absorption of components such as the annular airbag and the buffering of the spring can improve the shock absorption effect on the motor shaft. The bearing can reduce the resistance when the motor shaft rotates, thereby prolonging the service life of the motor shaft.

[0016] 2. Through the connection of the annular plate and the positioning block, the motor shaft will drive components such as the connecting ring plate to rotate after rotation. The shock-absorbing rubber can not only elastically connect components such as the annular plate and the connecting ring, but also further shock-absorb the motor shaft, thereby further improving the earthquake resistance of the motor. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the interior of the overall structure of the present utility model;

[0019] Figure 3 is a side view of the overall structure of the present utility model;

[0020] Figure 4 is of the present utility model Figure 2 enlarged view of structure A.

[0021] Description of the reference numerals: 1, motor shaft; 11, end shaft; 12, first jack; 2, motor housing; 3, bearing; 4, rubber ring; 41, annular airbag; 42, spring; 43, first plug; 44, second plug; 5, connecting ring plate; 51, annular groove; 52, annular plate; 53, positioning block; 54, shock-absorbing rubber; 55, second jack. Detailed Description of the Preferred Embodiment

[0022] The following is a further detailed description of the present utility model with reference to the Figures 1-4 drawings.

[0023] An embodiment of the present utility model discloses an earthquake-resistant motor shaft. Referring to Figures 1-3 , it includes a motor shaft. The motor shaft includes a motor shaft 1 and end shafts 11 provided at both ends of the motor shaft 1 and having a diameter smaller than that of the motor shaft 1. A motor housing 2 is provided outside the motor shaft. The motor shaft 1 is located inside the motor housing 2. The motor shaft 1, the end shafts 11, and the motor housing 2 are coaxial. A shock-absorbing mechanism is provided between the motor shaft and the motor housing 2. The shock-absorbing mechanism can shock-absorb between the motor shaft and the motor housing 2, thereby achieving the effect of earthquake resistance for the motor and extending the service life of the motor.

[0024] Referring to Figures 2-4 , bearings 3 for reducing the rotational resistance of the motor shaft are fixedly installed at both ends inside the motor housing 2. A connecting mechanism is provided between the bearings 3 and the end shafts 11. A connecting ring plate 5 is rotatably provided inside the bearings 3. An annular groove 51 is formed on the side of the connecting ring plate 5 away from the motor shaft 1. The outer ring of the bearing 3 is fixedly installed at both ends inside the motor housing 2, and the inner ring of the bearing 3 is fixedly provided on the outer wall of the connecting ring plate 5. Since the outer ring and the inner ring of the bearing 3 rotate relative to each other, the connecting ring plate 5 can rotate inside the bearing 3, and the bearing 3 can also connect the motor housing 2 and the connecting ring plate 5.

[0025] Referring to Figures 2-4, the connecting mechanism includes an annular plate 52 fixedly arranged on the outer wall of the end rotating shaft 11 and buckled in the annular groove 51, and several positioning blocks 53 fixedly arranged at one end of the annular plate 52 and fittingly inserted in the annular groove 51. The annular plate 52 can be fixedly arranged on the outer wall of the end rotating shaft 11 by means such as bonding and welding. After the annular plates 52 on both sides of the motor are buckled into the annular groove 51, the motor housing 2 in the middle can be limited, so that the motor shaft will not fall off the motor housing 2. After the positioning blocks 53 are inserted into the corresponding annular grooves 51, the annular plate 52 and the connecting ring plate 5 can be further connected. After the end rotating shaft 11 rotates, the connecting ring plate 5 will be driven to rotate accordingly.

[0026] Refer to Figures 2-4 , a shock-absorbing rubber 54 for further damping the motor shaft is fixedly arranged between the annular groove 51 of the connecting ring plate 5, the annular plate 52 and the positioning blocks 53. The shock-absorbing rubber 54 can fill the gap between the annular groove 51, the annular plate 52 and the positioning blocks 53, and buffer and damp between the connecting ring plate 5, the annular plate 52 and the positioning blocks 53, so as to damp the motor shaft connected inside the annular plate 52.

[0027] Refer to Figures 2-4 , the damping mechanism includes a rubber ring 4 arranged between the inner side of the bearing 3 and the outer side of the end rotating shaft 11 and having a hollow interior, an annular airbag 41 fixedly arranged in the cavity of the rubber ring 4 for buffering and absorbing energy of the motor shaft, and several springs 42 fixedly arranged in the annular airbag 41 for buffering the motor shaft. The outer ring of the rubber ring 4 is in fitting abutment with the inner wall of the connecting ring plate 5, and the inner ring of the rubber ring 4 is in fitting abutment with the end rotating shaft 11. The hollow rubber ring 4 can protect the annular airbag 41. The annular airbag 41 and the rubber ring 4 can buffer and absorb energy and damp the motor shaft during the operation of the motor. The springs 42 can buffer the motor shaft during the operation of the motor and support the interior of the annular airbag 41 for shaping.

[0028] Refer to Figure 2 And Figure 4 , several first insertion blocks 43 are fixedly arranged on the inner ring of the rubber ring 4, and several second insertion blocks 44 are fixedly arranged on the outer ring of the rubber ring 4. Several first insertion holes 12 are opened on the outer wall of the end rotating shaft 11, and several second insertion holes 55 are opened on the inner wall of the connecting ring plate 5. The first insertion blocks 43 are fittingly inserted into the first insertion holes 12 of the end rotating shaft 11, and the second insertion blocks 44 are fittingly inserted into the second insertion holes 55 of the connecting ring plate 5. After the first insertion blocks 43 are inserted into the corresponding first insertion holes 12, the end rotating shaft 11 and the rubber ring 4 can be connected. After the second insertion blocks 44 are inserted into the corresponding second insertion holes 55, the rubber ring 4 and the connecting ring plate 5 can be connected, so as to fix components such as the rubber ring 4 between the end rotating shaft 11 and the connecting ring plate 5.

[0029] The implementation principle of an earthquake-resistant motor shaft in an embodiment of the present utility model is as follows:

[0030] During installation, people can insert the rubber ring 4 between the end rotating shaft 11 and the connecting ring plate 5, and insert the first insertion block 43 into the corresponding first insertion hole 12 and the second insertion block 44 into the corresponding second insertion hole 55 to fix the shock absorption mechanism composed of components such as the rubber ring 4;

[0031] Then people can put the annular plate 52 on the outside of the end rotating shaft 11, and insert the annular plate 52 and the positioning block 53 into the shock absorption rubber 54 in the annular groove 51, and then fix between the annular plate 52 and the end rotating shaft 11 by means of bonding or welding, etc.;

[0032] When the motor runs, it will drive the motor shaft composed of the motor rotating shaft 1 and the end rotating shaft 11 to rotate. After the motor shaft rotates, it will drive the connecting ring plate 5 to rotate in the bearing 3 through the connection of components such as the annular plate 52 and the positioning block 53. At this time, the bearing 3 can reduce the resistance of the motor shaft rotation;

[0033] At the same time, when the motor runs, it will generate vibrations. At this time, the rubber ring 4 and the annular airbag 41 can absorb energy and buffer. With the connection of the connection mechanism, it can reduce the rebound of the spring 42 in the annular airbag 41, and the energy absorption of components such as the annular airbag 41 and the buffering of the spring 42 can improve the shock absorption effect on the motor shaft. With the buffering and shock absorption of the shock absorption rubber 54, it can further enhance the earthquake resistance of the motor.

[0034] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An earthquake-resistant motor shaft, comprising a motor shaft, the motor shaft includes a motor rotating shaft (1), and end rotating shafts (11) provided at both ends of the motor rotating shaft (1) and having a diameter smaller than that of the motor rotating shaft (1). A motor housing (2) is provided outside the motor shaft, and a shock-absorbing mechanism is provided between the motor shaft and the motor housing (2). It is characterized in that: Bearings (3) for reducing the rotation resistance of the motor shaft are fixedly installed at both ends inside the motor housing (2). The shock-absorbing mechanism includes a rubber ring (4) with a hollow interior provided between the inner side of the bearing (3) and the outer side of the end rotating shaft (11), an annular airbag (41) fixedly provided in the cavity of the rubber ring (4) for buffering and absorbing energy of the motor shaft, and a number of springs (42) fixedly provided in the annular airbag (41) for buffering the motor shaft. A connecting mechanism is provided between the bearing (3) and the end rotating shaft (11).

2. The seismic motor shaft according to claim 1, wherein: The motor rotating shaft (1) is located inside the motor housing (2), and the motor rotating shaft (1), the end rotating shaft (11), and the motor housing (2) are coaxial.

3. The anti-seismic motor shaft according to claim 1, characterized in that: A connecting ring plate (5) is rotatably provided inside the bearing (3), and an annular groove (51) is opened on the side of the connecting ring plate (5) away from the motor rotating shaft (1).

4. The anti-seismic motor shaft according to claim 3, wherein: The connecting mechanism includes an annular plate (52) fixedly provided on the outer wall of the end rotating shaft (11) and buckled in the annular groove (51), and a number of positioning blocks (53) fixedly provided at one end of the annular plate (52) and fittingly inserted in the annular groove (51).

5. The anti-seismic motor shaft according to claim 4, characterized in that: A shock-absorbing rubber (54) for further damping the motor shaft is fixedly provided between the annular groove (51) of the connecting ring plate (5), the annular plate (52), and the positioning block (53).

6. The anti-seismic motor shaft according to claim 3, characterized in that: A number of first insertion blocks (43) are fixedly provided on the inner circle of the rubber ring (4), and a number of second insertion blocks (44) are fixedly provided on the outer circle of the rubber ring (4).

7. An earthquake-resistant motor shaft according to claim 6, characterized in that: A number of first insertion holes (12) are opened on the outer wall of the end rotating shaft (11), and a number of second insertion holes (55) are opened on the inner wall of the connecting ring plate (5).

8. The seismic motor shaft according to claim 7, characterized in that: The first insertion block (43) is fittingly inserted into the first insertion hole (12) of the end rotating shaft (11), and the second insertion block (44) is fittingly inserted into the second insertion hole (55) of the connecting ring plate (5).

Images