Anti-shearing motor rotating shaft

Abstract

The utility model provides an anti-shearing motor rotating shaft, and relates to the technical field of motor rotating shafts, the motor rotating shaft comprises a motor rotating shaft body, the motor rotating shaft body comprises a rotating shaft, the outer side of the rotating shaft is provided with four reinforcing housings and a buffer housing, the buffer housing is arranged between two adjacent reinforcing housings, and the buffer housing is arranged between the two adjacent reinforcing housings. The strength of the rotating shaft is improved through the reinforced shell, the overall hardness, wear resistance and corrosion resistance of the motor rotating shaft body are improved due to the fact that the reinforced shell is formed by pouring alloy steel, the motor rotating shaft body is prevented from being broken in the rotating process, and auxiliary force unloading is further carried out on the reinforced shell through the buffer shell when the motor rotating shaft body rotates; the strengthening shell can extrude the buffering shell under the action of centrifugal force, and the buffering shell is formed by pouring a copper material, so that the buffering shell has high toughness.

Description

Technical Field

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

[0002] Motors are widely used in daily life. Usually, motors are composed of three parts: the stator, the rotor, and the motor shaft. The motor shaft is connected to the motor rotor through an interference fit. The rotor of a medium-sized motor is longer, and the heat generated at the fitting part between the rotor and the stator is higher. The heat generated by the motor during operation depends on the whirlwind generated by the rotor to dissipate the heat. During the operation of a medium-sized motor, the heat cannot be taken away in time, causing the motor temperature to rise too quickly.

[0003] The existing patent CN212115047U motor shaft positions the rotor through a stop ring. At the same time, the shaft body and the sleeve rod are plug-in, which is convenient for the installation of the rotor. The setting of the anti-skid groove can increase the friction between the rotor and the shaft body and the sleeve rod to prevent the rotor from loosening. The shaft body and the sleeve rod are both hollow, and the air holes have a certain heat dissipation effect, providing a heat dissipation channel for the inside of the motor and extending the overall service life.

[0004] However, in this patent, since the above-mentioned shaft body and sleeve rod are both air structures, the overall strength of the shaft is weakened, making the device easy to break during rotation. Although the internal temperature can be cooled through the air holes, the overall strength of the shaft will be further weakened. Therefore, the utility model proposes a shear-resistant motor shaft. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to provide a shear-resistant motor shaft.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a shear-resistant motor shaft, including a motor shaft body, the motor shaft body including a shaft, a reinforcing shell and a buffer shell are arranged on the outer side of the shaft, and a total of four reinforcing shells are arranged, and a buffer shell is arranged between two adjacent reinforcing shells.

[0007] As a preferred embodiment, the reinforced shell and the outer wall of the reinforced shell are provided with a reinforcement layer, the reinforcement layer is formed by casting carbon steel material, and the outer wall of the reinforcement layer is anodized.

[0008] The beneficial effect of adopting the above further scheme is: the strength of the reinforced shell and the buffer shell is further improved through the strengthening layer. Since the carbon steel shaft has good strength and rigidity, it is suitable for rotating parts in general mechanical devices that need to bear medium loads. Further, through anodizing, a layer of oxide layer with higher hardness can be formed to enhance the wear resistance and corrosion resistance of the shaft surface.

[0009] As a preferred embodiment, the four buffer shells are all embedded with reinforcing ribs, the reinforcing ribs are distributed in a vertical direction, and the spacing between two adjacent reinforcing ribs is equal, and the reinforcing ribs are formed by casting titanium-molybdenum alloy.

[0010] The beneficial effect of adopting the above-mentioned further scheme is: when the motor shaft body generates rotational force on the rotating shaft, the extrusion force of the reinforced shell is buffered by the action of the buffer shell to prevent it from breaking under the action of centrifugal force. The buffer shell is further formed by casting copper material, and the buffer shell can be auxiliary supported by reinforcing ribs to avoid damage to the buffer shell due to the extrusion process. Since copper has good toughness and thermal conductivity, it can conduct heat from the shaft during use and dissipate heat during rotation.

[0011] As a preferred embodiment, mounting holes are formed at the top and bottom of the rotating shaft, and mounting grooves are formed at the upper and lower ends of the rotating shaft.

[0012] The beneficial effect of adopting the above further solution is: the motor shaft body is installed at a specified position through the installation hole and the installation groove, and the motor shaft body is limited by the installation groove to prevent the motor shaft body from slipping during rotation.

[0013] As a preferred implementation, the inner wall diameters of the reinforcing shell and the buffer shell are both matched with the outer wall diameter of the rotating shaft.

[0014] The beneficial effect of adopting the above further scheme is: the shaft is auxiliary supported by the reinforced shell and the buffer shell, the strength of the shaft is increased by the reinforced shell, and the buffer shell is further used to relieve the force of the reinforced shell in a rotating state, thereby improving the shear resistance of the device.

[0015] As a preferred embodiment, the inner wall diameter of the strengthening layer is adapted to the sum of the outer walls of the strengthening shell and the buffer shell.

[0016] The beneficial effect of adopting the above further scheme is: the outer wall of the reinforced shell and the buffer shell is protected by the reinforcement layer, thereby increasing the service life of the reinforced shell and the buffer shell and avoiding surface wear of the reinforced shell and the buffer shell.

[0017] Compared with the prior art, the advantages and positive effects of the utility model are:

[0018] 1. In the utility model, the strength of the shaft is improved by strengthening the outer shell. Since the strengthened outer shell is formed by casting alloy steel, the overall hardness, wear resistance and corrosion resistance of the motor shaft body are improved, and the motor shaft body is prevented from breaking during rotation. The strengthened outer shell is further assisted in unloading force by the buffer outer shell. When the motor shaft body is rotating, the strengthened outer shell will squeeze the buffer outer shell under the action of centrifugal force. Since the buffer outer shell is formed by casting copper, it has high toughness, which offsets the squeezing force generated by the strengthened outer shell. Copper has good thermal conductivity. Therefore, when the motor shaft body is rotating, the heat generated inside the shaft can be discharged, and the overall strength of the motor shaft body is prevented from being reduced due to excessively high temperature, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of a shear-resistant motor shaft of the utility model;

[0020] Figure 2 This is a disassembled diagram of a shear-resistant motor shaft of the utility model;

[0021] Figure 3 This is a structural diagram of a buffer housing in a shear-resistant motor shaft of the utility model;

[0022] Figure 4 This is a disassembled diagram of a reinforced housing in a shear-resistant motor shaft of the utility model;

[0023] Figure 5 It is a cross-sectional view of a shear-resistant motor shaft of the utility model.

[0024] Reference numerals

[0025] 1. Motor shaft body; 2. Reinforcement layer; 3. Reinforced shell; 4. Shaft; 41. Mounting groove; 42. Mounting hole; 5. Buffer shell; 51. Reinforcement rib. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1

[0028] like Figure 1-5As shown, the utility model provides a technical solution: a shear-resistant motor shaft, including a motor shaft body 1, the motor shaft body 1 includes a shaft 4, a reinforcing shell 3 and a buffer shell 5 are arranged on the outer side of the shaft 4, a total of four reinforcing shells 3 are arranged, and a buffer shell 5 is arranged between two adjacent reinforcing shells 3.

[0029] The reinforced shell 3 and the outer wall of the reinforced shell 3 are provided with a reinforcing layer 2, and the reinforcing layer 2 is formed by casting carbon steel material. The outer wall of the reinforcing layer 2 is anodized, and the strength of the reinforced shell 3 and the buffer shell 5 is further improved by the reinforcing layer 2. Since the carbon steel shaft 4 has good strength and rigidity, it is suitable for rotating parts that need to withstand medium loads in general mechanical devices. Further, a layer of oxide layer with higher hardness can be formed through anodizing to enhance the wear resistance and corrosion resistance of the surface of the shaft 4.

[0030] Example 2

[0031] like Figure 3-5 As shown, reinforcing ribs 51 are embedded on the four buffer shells 5, and the reinforcing ribs 51 are distributed in a vertical direction, and the spacing between two adjacent reinforcing ribs 51 is equal. The reinforcing ribs 51 are cast by titanium-molybdenum alloy. When the motor shaft body 1 generates a rotational force on the rotating shaft 4, the extrusion force of the reinforced shell 3 is buffered by the action of the buffer shell 5 to prevent it from breaking under the action of centrifugal force. Furthermore, the buffer shell 5 is cast by copper material, and the buffer shell 5 can also be auxiliary supported by the reinforcing ribs 51 to avoid damage to the buffer shell 5 due to the extrusion process. Since copper has good toughness and thermal conductivity, it can conduct heat from the shaft 4 during use and dissipate heat during rotation.

[0032] There are mounting holes 42 at the top and bottom of the shaft 4, and mounting grooves 41 are provided at the upper and lower ends of the shaft 4. The motor shaft body 1 is installed at a specified position through the mounting holes 42 and the mounting grooves 41. At this time, the motor shaft body 1 is limited by the mounting grooves 41 to prevent the motor shaft body 1 from slipping during rotation.

[0033] The inner wall diameters of the reinforcing shell 3 and the buffer shell 5 are both compatible with the outer wall diameter of the rotating shaft 4. The reinforcing shell 3 and the buffer shell 5 provide auxiliary support for the rotating shaft 4. The strength of the rotating shaft 4 is increased by the reinforcing shell 3, and the buffer shell 5 further unloads and buffers the reinforcing shell 3 in a rotating state, thereby improving the shear resistance of the device.

[0034] The inner wall diameter of the strengthening layer 2 is adapted to the sum of the outer walls of the strengthening shell 3 and the buffer shell 5. The outer walls of the strengthening shell 3 and the buffer shell 5 are protected by the strengthening layer 2, thereby increasing the service life of the strengthening shell 3 and the buffer shell 5 and avoiding surface wear of the strengthening shell 3 and the buffer shell 5.

[0035] Working principle:

[0036] like Figure 1-5 As shown, first, the motor shaft body 1 is installed at the specified position through the installation hole 42, and the motor shaft body 1 is limited by the installation groove 41. When the motor shaft body 1 rotates, the reinforcing shell 3 will squeeze the buffer shell 5 under the action of centrifugal force. Since the buffer shell 5 is cast from copper, it has high toughness, which offsets the extrusion force generated by the reinforcing shell 3, and copper has good thermal conductivity. Therefore, when the motor shaft body 1 rotates, the heat generated inside the shaft 4 can be discharged to avoid the overall strength of the motor shaft body 1 being reduced due to excessive temperature.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A shear-resistant motor shaft, characterized in that: The motor shaft body (1) comprises a shaft (4), wherein the shaft (4) is provided with a reinforcing shell (3) and a buffer shell (5) on the outer side of the shaft (4), wherein a total of four reinforcing shells (3) are provided, and a buffer shell (5) is provided between two adjacent reinforcing shells (3).

2. The shear-resistant motor shaft according to claim 1, characterized in that: The reinforced shell (3) and the outer wall of the reinforced shell (3) are provided with a reinforced layer (2), the reinforced layer (2) is cast from a carbon steel material, and the outer wall of the reinforced layer (2) is anodized.

3. The shear-resistant motor shaft according to claim 1, characterized in that: Reinforcing ribs (51) are embedded in the four buffer shells (5), the reinforcing ribs (51) are distributed in a vertical direction, and the spacing between two adjacent reinforcing ribs (51) is equal. The reinforcing ribs (51) are formed by casting titanium-molybdenum alloy.

4. The shear-resistant motor shaft according to claim 1, characterized in that: The top and bottom of the rotating shaft (4) are both provided with mounting holes (42), and the upper and lower ends of the rotating shaft (4) are both provided with mounting grooves (41).

5. The shear-resistant motor shaft according to claim 1, characterized in that: The inner wall diameters of the reinforcing shell (3) and the buffer shell (5) are both compatible with the outer wall diameter of the rotating shaft (4).

6. The shear-resistant motor shaft according to claim 2, characterized in that: The inner wall diameter of the strengthening layer (2) is adapted to the sum of the outer wall diameters of the strengthening shell (3) and the buffer shell (5).

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