Motor for high-temperature tempering furnace

Abstract

The utility model relates to motor equipment technical field discloses a kind of high-temperature tempering furnace motor, including motor body, motor shaft and support assembly, motor body front and rear end detachably equipped with front end cover and rear end cover, motor shaft is passed through motor body and both ends extend to end cover outside, and support assembly contains front, rear support unit. The front bearing seat of front support unit is fixed in the inside of front end cover, and first bearing, second bearing and spacer sleeve are built-in;The rear bearing seat of rear support unit is fixed in the inside of rear end cover, and third bearing is built-in, and elastic compensation member is equipped between the outer ring of third bearing and rear end cover. It further includes axial positioning ring, lubrication channel, oil cup and sealing ring. The utility model improves support stability by double bearing combination, and elastic compensation member adapts to high-temperature thermal deformation, axial positioning ring limits to move, and lubrication and sealing structure guarantee reliability, applicable to high-temperature tempering furnace and other severe working conditions, can effectively prolong the service life of motor.

Description

Technical Field

[0001] This utility model relates to the field of motor equipment technology, specifically to a motor for a high-temperature tempering furnace. Background Technology

[0002] High-temperature tempering furnaces are key equipment in the metal heat treatment process. Their operating environment temperature is typically between 300-650℃, and they are subject to complex conditions such as vibration and dust. As the core driving component of the high-temperature tempering furnace, the motor needs to operate stably in high-temperature and vibrating environments for extended periods. The stability of its shaft system directly affects the service life and working accuracy of the equipment.

[0003] In existing technologies, the shaft support for motors used in high-temperature tempering furnaces often employs a symmetrical arrangement of single or double bearings. While single-bearing supports are simple in structure, they lack radial stiffness, making the shaft prone to deflection and deformation at high temperatures, leading to abnormal noise and increased vibration during motor operation. Double-bearing supports, although improving stiffness, suffer from insufficient connection strength between the bearing housing and the motor end cover, and lack thermal compensation design for high-temperature environments. Over long-term use, thermal expansion and contraction can cause abnormal bearing preload, resulting in shaft jamming or wear. Furthermore, existing support structures lack sufficient control over the axial positioning accuracy of the shaft, making it prone to shaft movement under vibration conditions, affecting transmission stability.

[0004] Therefore, there is an urgent need for a high-temperature tempering furnace motor that can provide stable support for the motor shaft under high temperature and vibration conditions, and has both high radial stiffness and axial positioning accuracy. Utility Model Content

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A motor for a high-temperature tempering furnace includes a motor body, a motor shaft, and a support assembly. The motor body is detachably provided with a front end cover and a rear end cover at its front and rear ends. The motor shaft passes through the motor body and extends to the outside of the front end cover and the rear end cover, respectively. The support assembly includes a front support unit and a rear support unit, which are respectively provided at the front end cover and the rear end cover.

[0007] The front support unit includes a front bearing housing, which is fixed inside the front end cover. A first bearing and a second bearing are sequentially embedded inside the front bearing housing along the axial direction. The spacer is sleeved on the motor shaft and located between the first bearing and the second bearing.

[0008] The rear support unit includes a rear bearing housing, which is fixed to the inner side of the rear end cover. The third bearing is embedded in the rear bearing housing, and the elastic compensation member is provided between the outer ring of the third bearing and the rear end cover.

[0009] Preferably, the elastic compensation element is a disc spring.

[0010] Preferably, the first bearing and the second bearing are deep groove ball bearings, and the second bearing is an angular contact ball bearing.

[0011] Preferably, the motor shaft is provided with an axial positioning ring at one end near the rear support unit, and the axial positioning ring abuts against the inner ring of the third bearing.

[0012] Preferably, the front end cover is provided with lubrication channels at positions corresponding to the first and second bearings, and an oil cup is provided at the outer end of the lubrication channel.

[0013] Preferably, a sealing ring is provided at the position where the motor shaft passes through the front end cover and the rear end cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention provides both high radial stiffness and axial positioning capability through the dual bearing combination of the front support unit, and the spacer ensures that the two bearings are subjected to uniform force, effectively improving the stability of the shaft system.

[0016] This invention features an elastic compensation component between the outer ring of the third bearing in the rear support unit and the rear end cover, which can automatically compensate for thermal expansion and contraction under high temperatures and prevent abnormal bearing preload.

[0017] The axial positioning ring of this invention abuts against the inner ring of the third bearing, restricting axial movement of the shaft system and ensuring transmission accuracy.

[0018] The lubrication channel and oil cup design of this invention facilitates bearing lubrication and maintenance, and extends bearing service life.

[0019] The sealing ring of this invention prevents dust and other impurities from entering the motor, thereby improving the reliability of the motor in harsh environments. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 for Figure 2 Sectional view along the AA direction.

[0023] In the diagram: 1. Motor body; 2. Motor shaft; 3. Front cover; 4. Rear cover; 5. Front support unit; 51. Front bearing housing; 52. First bearing; 53. Second bearing; 54. Spacer; 6. Rear support unit; 61. Rear bearing housing; 62. Third bearing; 63. Elastic compensation component; 7. Axial positioning ring; 8. Lubrication channel; 9. Oil cup; 10. Sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0027] like Figure 1-3 As shown, in this embodiment, a motor for a high-temperature tempering furnace includes a motor body 1, a motor shaft 2, a front cover 3, a rear cover 4, and a support assembly. The front cover 3 and the rear cover 4 are detachably disposed at the front and rear ends of the motor body 1. The motor shaft 2 passes through the motor body 1, with both ends extending to the outside of the front cover 3 and the rear cover 4, respectively. The support assembly includes a front support unit 5 and a rear support unit 6, which respectively provide stable support to both ends of the motor shaft 2.

[0028] In this embodiment, the front support unit 5 includes a front bearing housing 51, a first bearing 52, a second bearing 53, and a spacer 54. The front bearing housing 51 is fixed to the inside of the front end cover 3, and the first bearing 52, the first bearing 53, and the second bearing 53 are sequentially embedded in the housing along the axial direction. The first bearing 52 is a deep groove ball bearing, and the second bearing 53 is an angular contact ball bearing. The spacer 54 is sleeved on the motor shaft 2 and located between the two bearings to maintain the bearing spacing and ensure preload.

[0029] In this embodiment, the rear support unit 6 includes a rear bearing housing 61, a third bearing 62 (cylindrical roller bearing), and an elastic compensating member 63. The third bearing 62 is a cylindrical roller bearing, and the elastic compensating member 63 is a butterfly spring. The rear bearing housing 61 is fixed inside the rear end cover 4, and the third bearing 62 is embedded in the rear bearing housing 61. A butterfly spring is provided between its outer ring and the rear end cover 4, with an axial compression amount of 0.8mm, which can compensate for thermal expansion and contraction under high temperature. An axial positioning ring 7 is provided at one end of the motor shaft 2 near the rear support unit 6, which abuts against the inner ring of the third bearing 62 to restrict axial movement of the shaft system.

[0030] In this embodiment, lubrication channels 8 are provided on the front cover 3 at positions corresponding to the first bearing 52 and the second bearing 53. An oil cup 9 is provided at the outer end of each lubrication channel 8, allowing lubricant to be periodically injected into the bearings to ensure normal operation. A sealing ring 10 is provided at the position where the motor shaft 2 passes through the front cover 3 and the rear cover 4 to prevent dust and other impurities from the high-temperature tempering furnace from entering the motor and affecting the bearing life.

[0031] The working principle of the above technical solution is as follows:

[0032] In use, the radial load of the motor shaft 2 is mainly borne by the deep groove ball bearing 52 of the front support unit 5 and the cylindrical roller bearing 62 of the rear support unit 6, forming a two-point support structure to ensure the radial stability of the shaft system. The axial load of the motor shaft 2 is borne by the angular contact ball bearing 53 of the front support unit 5 and the axial positioning ring 7, achieving precise axial positioning. In high-temperature environments, the disc spring 63 compensates for the thermal expansion of the motor shaft 2 in real time, maintaining the bearing preload within the optimal range. The lubrication system continuously provides lubrication to the bearing through the lubrication channel 8. The grease forms an oil film inside the bearing, reducing frictional resistance and wear, while also carrying away the heat generated by the bearing operation, extending the bearing's service life. A sealing ring 10 is provided at the position where the motor shaft 2 passes through the front end cover 3 and the rear end cover 4. It is made of high-temperature resistant and wear-resistant fluororubber material. The sealing ring 10 fits tightly against the surface of the motor shaft 2, forming a sealing barrier, effectively preventing dust, moisture, and other impurities in the high-temperature tempering furnace from entering the motor, protecting the bearing from contamination.

[0033] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. An electric motor for a high-temperature tempering furnace, characterized in that, The motor body (1), motor shaft (2), and support assembly are included. The front end cover (3) and rear end cover (4) of the motor body (1) are detachably provided at the front and rear ends. The motor shaft (2) passes through the motor body (1) and its two ends extend to the outside of the front end cover (3) and rear end cover (4), respectively. The support assembly includes a front support unit (5) and a rear support unit (6), which are respectively provided at the front end cover (3) and rear end cover (4). The front support unit (5) includes a front bearing seat (51), which is fixed to the inside of the front end cover (3). The first bearing (52) and the second bearing (53) are sequentially embedded in the front end cover (3) along the axial direction. The spacer (54) is sleeved on the motor shaft (2) and located between the first bearing (52) and the second bearing (53). The rear support unit (6) includes a rear bearing seat (61), which is fixed to the inner side of the rear end cover (4). A third bearing (62) is embedded in the rear bearing seat (61), and an elastic compensation member (63) is provided between the outer ring of the third bearing (62) and the rear end cover (4).

2. The motor for a high-temperature tempering furnace according to claim 1, characterized in that: The elastic compensator (63) is a butterfly spring.

3. The motor for a high-temperature tempering furnace according to claim 1, characterized in that: The first bearing (52) is a deep groove ball bearing, and the second bearing (53) is an angular contact ball bearing.

4. The motor for a high-temperature tempering furnace according to claim 1, characterized in that: An axial positioning ring (7) is provided at one end of the motor shaft (2) near the rear support unit (6), and the axial positioning ring (7) abuts against the inner ring of the third bearing (62).

5. The motor for a high-temperature tempering furnace according to claim 1, characterized in that: Lubrication channels (8) are provided on the front end cover (3) at positions corresponding to the first bearing (52) and the second bearing (53), and an oil cup (9) is provided at the outer end of the lubrication channel (8).

6. The motor for a high-temperature tempering furnace according to claim 1, characterized in that: A sealing ring (10) is provided at the position where the motor shaft (2) passes through the front cover (3) and the rear cover (4).

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