CN205304469U - Torque motors for high acceleration values in any direction - Google Patents

Abstract

The utility model discloses a torque motor suitable for arbitrary direction high acceleration value acceleration environment, including shell, right-hand member lid, left end lid, pivot, stator, rotor magnet steel and bearing group, right-hand member lid and installation basis fixed connection, the right-hand member and the right-hand member lid fixed connection of shell, the left end and the left end lid fixed connection of shell, the pivot sets up in the inside of shell to through bearing group and shell rotatable coupling, the fixed surface of stator and shell is connected, the fixed surface of rotor magnet steel and pivot is connected. The utility model discloses an adopt fixed-supporting mode that moves about to the compensation of the deformation that the realization brought the temperature has also guaranteed that the clearance between torque motor rotor and the stator does not change, makes torque motor's pivot can normally rotate under arbitrary direction acceleration environment.

Description

Torque motors for high acceleration values in any direction

technical field

The utility model relates to a torque motor, in particular to a torque motor suitable for an acceleration environment with high acceleration value in any direction.

Background technique

At present, most of the commonly used torque motors are designed for the ground environment. Under the environment of high acceleration value acceleration, its structural strength and stiffness often cannot meet the requirements, especially the lack of support stiffness directly makes the torque motor rotor and stator The gap between them cannot be controlled within the ideal range, so that it cannot be guaranteed that the torque motor can still be used normally under the acceleration environment of high acceleration value.

Utility model content

The purpose of the utility model is to provide a torque motor suitable for an acceleration environment with high acceleration value in any direction in order to solve the above problems.

The utility model realizes above-mentioned purpose through following technical scheme:

A torque motor suitable for acceleration environments with high acceleration values in any direction, comprising a casing, a right end cover, a left end cover, a rotating shaft, a stator, a rotor magnetic steel and a bearing set, the right end cover is fixedly connected to the installation base, and the casing The right end of the housing is fixedly connected to the right end cover, the left end of the housing is fixedly connected to the left end cover, the rotating shaft is arranged inside the housing, and is rotatably connected to the housing through the bearing group. The stator is fixedly connected to the inner surface of the housing, and the rotor magnetic steel is fixedly connected to the outer surface of the rotating shaft.

Further, the torque motor also includes a left pressure ring and a right pressure ring for fixing the bearing set, the bearing set includes cross roller bearing I and cross roller bearing II, and the left pressure ring includes a left outer pressure ring ring and left inner pressure ring, the right pressure ring includes a right outer pressure ring and a right inner pressure ring, the outer ring of the cross roller bearing I is mounted on the inner side of the left end cover through clearance fit, and passes through the left outer The pressure ring is positioned axially, the inner ring of the crossed roller bearing I is fixedly connected with the rotating shaft through interference fit, the outer ring of the crossed roller bearing II is installed on the inner side of the right end cover through a clearance fit, and The axial positioning is performed by the right outer pressure ring, and the inner ring of the crossed roller bearing II is fixedly connected with the rotating shaft through interference fit.

Specifically, the left outer pressure ring is fixedly connected to the left end cover through screws, the left inner pressure ring is fixedly connected to the rotating shaft through screws, and the right outer pressure ring is fixedly connected to the right end cover through screws, The right inner pressure ring is fixedly connected to the rotating shaft through screws, and the cross roller bearing I is located in the annular cavity formed by the left outer pressure ring, the left inner pressure ring, the left end cover and the rotating shaft , the crossed roller bearing II is located in the annular cavity formed by the right outer pressure ring, the right inner pressure ring, the right end cover and the rotating shaft.

Preferably, the left end cap, the right end cap and the housing are all fitted through joints, the left end cap, the right end cap, the housing, the left outer pressure ring, the left inner pressure ring The central axes of the ring, the right outer pressure ring, the right inner pressure ring, the cross roller bearing I and the cross roller bearing II are all coincident.

Preferably, the rotor magnetic steel is fixedly connected to the outer surface of the rotating shaft by bonding, the stator is fixedly connected to the inner surface of the housing by bonding, and the central axis of the rotor magnetic steel and the stator are both coincides with the central axis of the rotating shaft.

Further, the torque motor also includes an encoder, an encoder bracket, an encoder mounting ring, a collector ring, a collector ring stop ring and a collector ring installation ring, and the encoder bracket is fixedly connected to the housing by screws, The encoder mounting ring is fixedly connected to the rotating shaft through screws, the rotor of the encoder is mounted on the encoder mounting ring through expansion sleeves, and the stator of the encoder is fixedly connected to the encoder bracket through screws , the collector ring installation ring is fixedly connected to the rotating shaft by screws, the rotor of the collector ring is fixedly connected to the collector ring installation ring by screws, and the collector ring retaining ring is connected to the code by screws The collector bracket is fixedly connected, and the stator of the collector ring is connected with the collector ring stop ring through pins that position it in the circumferential direction.

Specifically, the rotating shaft is a hollow shaft, the collector ring is installed in the rotating shaft, the collector ring retaining ring, the encoder installation ring, and the collector ring installation ring are sequentially arranged from outside to inside , the encoder bracket is disposed outside the circumference of the encoder mounting ring, and both the encoder mounting ring and the collector ring mounting ring are arranged concentrically with the rotating shaft through a seam fit.

Preferably, the left end cover and the rotating shaft, the right end cover and the rotating shaft, and the right end cover and the installation base are all fixedly connected by screws.

Specifically, the outer surface of the shell is provided with a plurality of reinforcing rib structures distributed along its circumference.

The beneficial effects of the utility model are:

The utility model is a moment motor suitable for the acceleration environment with high acceleration value in any direction, which is supported by a pair of cross roller bearings, and connected with the shell of the moment motor. The bearing adopts a fixed-swimming support mode, so that To realize the compensation for the deformation caused by temperature, the crossed roller bearing has the characteristics of high rotation accuracy, small size, large bearing capacity, and can bear loads in all directions at the same time. It can meet the lightweight design while improving the support rigidity of the transmission shaft system. It also ensures that the gap between the rotor and the stator of the torque motor does not change, so that the shaft of the torque motor can rotate normally under acceleration in any direction.

Description of drawings

Fig. 1 is a schematic structural diagram of a torque motor suitable for an acceleration environment with high acceleration values in any direction according to the present invention.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, the utility model is a torque motor suitable for an acceleration environment with high acceleration value in any direction, including a casing 2, a right end cover 1, a left end cover 3, a rotating shaft 13, a stator 15, a rotor magnet 14 and a bearing group, The bearing set includes crossed roller bearing Ⅰ5 and crossed roller bearing Ⅱ17, the right end cover 1 is fixedly connected with the installation base through screws, the right end of the housing 2 is fixedly connected with the right end cover 1 through screws, and the left end of the housing 2 is fixed with the left end cover 3 through screws connection, the rotating shaft 13 is set inside the housing 2, the rotor magnetic steel 14 is fixedly connected to the outer surface of the rotating shaft 13 by bonding, the stator 15 is fixedly connected to the inner surface of the housing 2 by bonding, and the outer ring of the cross roller bearing I5 passes through The clearance fit is installed on the inner side of the left end cover 3, and the axial positioning is carried out by the left outer pressure ring 12. The inner ring of the cross roller bearing I5 is fixedly connected with the rotating shaft 13 through interference fit, and the outer ring of the cross roller bearing II17 is through a clearance fit Installed on the inner side of the right end cover 1, and axially positioned by the right outer pressure ring 16, the inner ring of the cross roller bearing II17 is fixedly connected with the rotating shaft 13 through interference fit, and the left outer pressure ring 12 is fixedly connected with the left end cover 3 by screws , the left inner pressure ring 11 is fixedly connected with the rotating shaft 13 by screws, the right outer pressure ring 16 is fixedly connected with the right end cover 1 by screws, and the right inner pressure ring 18 is fixedly connected with the rotating shaft 13 by screws.

The torque motor also includes an encoder 6, an encoder bracket 4, an encoder mounting ring 7, a collector ring 8, a collector ring stop ring 10 and a collector ring installation ring 9, and the encoder bracket 4 is fixedly connected to the housing 2 by screws. The encoder mounting ring 7 is fixedly connected with the rotating shaft 13 through screws, the rotor of the encoder 6 is mounted on the encoder mounting ring 7 through expansion sleeves, the stator of the encoder 6 is fixedly connected with the encoder bracket 4 through screws, and the collector ring mounting ring 9 is fixedly connected with the rotating shaft 13 through screws, the rotor of the collector ring 8 is fixedly connected with the collector ring mounting ring 9 through screws, the collector ring stop ring 10 is fixedly connected with the encoder bracket 4 through screws, and the stator of the collector ring 8 is connected with the The slip ring retaining rings 10 are connected by pins which position them in the circumferential direction.

Left end cover 3, right end cover 1, shell 2, left outer pressure ring 12, left inner pressure ring 11, right outer pressure ring 16, right inner pressure ring 18, cross roller bearing I5, cross roller bearing II17, rotor magnetic steel 14. The central axes of the stator 15, the encoder mounting ring 7, the collector ring mounting ring 9 and the rotating shaft 13 are all coincident.

The rotating shaft 13 of the torque motor is rotatably supported by a pair of cross roller bearings, and is connected with the housing 2 of the torque motor. The bearing adopts a fixed-moving support method to realize compensation for deformation caused by temperature. The shell 2 of the torque motor is a structure of circumferentially distributed reinforcing ribs, which not only increases the supporting rigidity of the torque motor, but also increases the heat dissipation area. Through the above design, the normal operation of the torque motor in the acceleration environment with high acceleration value in any direction is realized.

The transmission shaft system of the torque motor adopts the fixed-moving bearing group support method, which can not only meet the supporting function, but also can compensate the axial deformation caused by the temperature change. The bearing adopts the cross roller bearing, which has the function of rotating It has the characteristics of high precision, small size, large bearing capacity, and can bear loads from all directions at the same time. While improving the support rigidity of the drive shaft system, it meets the requirements of lightweight design and ensures that the gap between the torque motor rotor and the stator 15 is small. Changes occur, so that the rotating shaft 13 of the torque motor can rotate normally under the acceleration environment in any direction. The encoder 6 is installed on the tail of the torque motor to provide real-time feedback on the angular position of the torque motor. The output shaft 13 of the torque motor is a hollow shaft structure , while meeting the strength and rigidity requirements, the overall mass of the torque motor is effectively reduced. In addition, the collector ring 8 can be sunk into the hollow shaft for installation, further reducing the overall volume of the torque motor. The slip ring 8 can pass the external cables to the rotating equipment driven by the torque motor. The shell 2 of the torque motor is a structure of circumferentially distributed reinforcing ribs, which not only increases the supporting rigidity of the torque motor, but also increases the heat dissipation area. Therefore, it is more reliable and effective to realize the normal operation of the torque motor under the environment of acceleration in any direction.

The technical solution of the utility model is not limited to the limitations of the above-mentioned specific embodiments, and any technical deformation made according to the technical solution of the utility model falls within the protection scope of the utility model.

Claims (9)

1. A torque motor suitable for an acceleration environment with high acceleration values in any direction, comprising a housing, a right end cover, a left end cover, a rotating shaft, a stator and a rotor magnetic steel, characterized in that: it also includes a bearing set, the right end cover and the installation base Fixedly connected, the right end of the housing is fixedly connected to the right end cover, the left end of the housing is fixedly connected to the left end cover, the rotating shaft is arranged inside the housing, and is connected to the housing through the bearing group Rotatably connected, the stator is fixedly connected to the inner surface of the casing, and the rotor magnetic steel is fixedly connected to the outer surface of the rotating shaft. 2. The torque motor suitable for acceleration environments with high acceleration values in any direction according to claim 1, characterized in that: it also includes a left pressure ring and a right pressure ring for fixing the bearing set, the bearing set includes a cross Roller bearing I and cross roller bearing II, the left pressure ring includes a left outer pressure ring and a left inner pressure ring, the right pressure ring includes a right outer pressure ring and a right inner pressure ring, the cross roller bearing I The outer ring of the crossed roller bearing I is fixedly connected to the rotating shaft through an interference fit, and is installed on the inner side of the left end cover through a clearance fit, and is axially positioned through the left outer pressure ring. The outer ring of the crossed roller bearing II is mounted on the inner side of the right end cover through a clearance fit, and is axially positioned by the right outer pressure ring, and the inner ring of the crossed roller bearing II is connected to the rotating shaft through an interference fit. Fixed connection. 3. The torque motor suitable for acceleration environments with high acceleration values in any direction according to claim 2, characterized in that: the left outer pressure ring is fixedly connected to the left end cover by screws, and the left inner pressure ring is fixed by screws It is fixedly connected with the rotating shaft, the right outer pressure ring is fixedly connected with the right end cover through screws, the right inner pressure ring is fixedly connected with the rotating shaft through screws, and the cross roller bearing I is located on the left outer In the annular cavity formed by the pressure ring, the left inner pressure ring, the left end cover and the rotating shaft, the cross roller bearing II is located in the right outer pressure ring, the right inner pressure ring, and the right end cover In the annular cavity formed by the rotating shaft. 4. The torque motor applicable to the acceleration environment with high acceleration value in any direction according to claim 3, characterized in that: the left end cover, the right end cover and the housing are all fitted through a seam, and the left end Cover, the right end cover, the housing, the left outer pressure ring, the left inner pressure ring, the right outer pressure ring, the right inner pressure ring, the cross roller bearing I and the cross The central axes of the roller bearing II are coincident. 5. The torque motor suitable for acceleration environments with high acceleration values in any direction according to claim 4, characterized in that: the rotor magnetic steel is fixedly connected to the outer surface of the rotating shaft by bonding, and the stator is fixed by bonding Fixedly connected with the inner surface of the casing, the central axis of the rotor magnetic steel and the stator coincides with the central axis of the rotating shaft. 6. The torque motor applicable to the acceleration environment of high acceleration value in any direction according to claim 1, characterized in that: it also includes an encoder, an encoder bracket, an encoder mounting ring, a collector ring, a collector ring stop ring and A collector ring mounting ring, the encoder bracket is fixedly connected to the housing through screws, the encoder mounting ring is fixedly connected to the rotating shaft through screws, and the rotor of the encoder is mounted on the encoder through an expansion sleeve. On the installation ring, the stator of the encoder is fixedly connected with the encoder bracket through screws, the collector ring installation ring is fixedly connected with the rotating shaft through screws, and the rotor of the collector ring is connected with the collector through screws. The collector ring mounting ring is fixedly connected, the collector ring retaining ring is fixedly connected with the encoder bracket through screws, the stator of the collector ring and the collector ring retaining ring are positioned by pins in the circumferential direction connect. 7. The torque motor suitable for acceleration environments with high acceleration values in any direction according to claim 6, characterized in that: the rotating shaft is a hollow shaft, the slip ring is installed in the rotating shaft, and the slip ring The retaining ring, the encoder mounting ring, and the collector ring mounting ring are sequentially arranged from outside to inside, the encoder bracket is arranged outside the circumference of the encoder mounting ring, and the encoder mounting ring and the The collector ring mounting rings are arranged concentrically with the rotating shaft through seam fit. 8. The torque motor suitable for acceleration environments with high acceleration values in any direction according to claim 1, characterized in that: said left end cover and said rotating shaft, said right end cover and said rotating shaft, said right end cover and said rotating shaft The above-mentioned installation bases are fixedly connected by screws. 9. The torque motor suitable for acceleration environments with high acceleration values in any direction according to claim 1, characterized in that: the outer surface of the housing is provided with a plurality of reinforcing rib structures distributed along its circumference.