CN212462994U - Integrative motor drive mechanism of lead screw pivot - Google Patents
Integrative motor drive mechanism of lead screw pivot Download PDFInfo
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- CN212462994U CN212462994U CN202021811182.8U CN202021811182U CN212462994U CN 212462994 U CN212462994 U CN 212462994U CN 202021811182 U CN202021811182 U CN 202021811182U CN 212462994 U CN212462994 U CN 212462994U
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Abstract
The application provides a integrative motor drive mechanism of lead screw pivot. This drive mechanism includes: the motor is provided with a transmission shaft and a machine shell, and the transmission shaft is arranged in the machine shell through a bearing; one end of the transmission shaft is a rotating shaft part which is directly connected with a rotor core of the motor; the other end of the transmission shaft is a screw rod part which extends out of the shell and is directly connected with the actuating mechanism. The screw rod and the rotating shaft are integrally designed, so that the mechanical property of the screw rod is more matched with the output performance of the motor, and the size and the weight of the motor can be conveniently controlled; an external linkage device is omitted, the size and the weight of the transmission mechanism are reduced, and the installation space is saved. And, realize connecting fixedly through the bearing between transmission shaft and first end cover, no bearing is connected fixedly between transmission shaft and the second end cover, and the unilateral bearing motor of this kind of unilateral bearing support scheme has removed from at the second end cover design bearing room, has effectively shortened the axial length of motor.
Description
Technical Field
The application relates to the technical field of motor equipment, in particular to a motor transmission mechanism integrating a screw rod and a rotating shaft.
Background
In the motion process, the screw rod has the characteristics of high precision, reversibility, high efficiency, small friction resistance and the like, so that the screw rod is widely applied to various industrial equipment and precision instruments. As is common, the screw serves as a transmission element commonly used in machine tools and precision machines, and mainly functions to convert a rotational motion into a linear motion or convert a torque into an axial repeated force.
At present, a transmission mechanism consisting of a screw rod and a motor is widely applied to linear motion occasions, a split type transmission structure is generally adopted between the screw rod and a motor rotating shaft (for example, the screw rod is connected with the motor rotating shaft through an external linkage device), and the rotary motion of the motor is converted into the linear motion of a driving nut along the axis of the screw rod by meshing a driving nut on the screw rod and the screw rod.
The split type transmission structure can cause the transmission mechanism to have excessive performance under the condition of meeting the actual output requirement due to the fact that the actual output requirement is met and the mechanical property of the screw rod and the output performance of the motor are unbalanced in matching, the excessive performance is mainly reflected in the large size, the large weight, the high processing and manufacturing cost, the material waste and the like of all parts of the transmission mechanism, and the split type transmission structure is difficult to convert the rotary motion of the motor into the linear motion in the occasions with the installation weight requirement and the limited installation space.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide an integrative motor drive mechanism of lead screw pivot and unilateral bearing motor to solve or alleviate the problem that exists among the above-mentioned prior art.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides an integrative motor drive mechanism of lead screw pivot for the rotary motion with the motor converts actuating mechanism's linear motion into, drive mechanism includes: a motor having a drive shaft and a housing, the drive shaft being mounted in the housing by a bearing; one end of the transmission shaft is a rotating shaft part which is directly connected with a rotor iron core of the motor; the other end of the transmission shaft is a screw rod part which extends out of the shell and is directly connected with the actuating mechanism.
Further, preferably, the housing comprises a first end cover and a second end cover, and the second end cover is connected to the first end cover; the transmission shaft is arranged on the first end cover through the bearing and is in unsupported connection with the second end cover; wherein the wire rod part extends out of the first end cover.
Further, as a preferable scheme, the first end cover is a barrel-shaped structure with an opening at one end, the second end cover is detachably connected to the opening end of the first end cover, and the transmission shaft is mounted at one end of the first end cover opposite to the opening end through the bearing.
Further, as a preferred scheme, a bearing chamber is arranged on the first end cover and used for installing a bearing outer ring of the bearing, correspondingly, a bearing installation part is arranged on the transmission shaft and located between the screw rod part and the rotating shaft part and used for installing a bearing inner ring of the bearing.
Further, as a preferred scheme, a bearing inner ring retaining shoulder is arranged on the transmission shaft and is positioned between the rotating shaft part and the bearing mounting part; a bearing outer ring retaining shoulder is arranged in the first end cover; the bearing inner ring is tightly pressed on the bearing inner ring retaining shoulder through a fastening nut; the bearing outer ring is pressed on the bearing outer ring retaining shoulder through the bearing gland.
Further, as a preferable scheme, one end of the transmission shaft close to the rotating shaft part extends out of the second end cover so as to install an encoder rotor of an encoder; correspondingly, the encoder stator of the encoder is mounted on the second end cap.
Further, as a preferred scheme, the encoder is a magnetoelectric encoder.
Further, as a preferable scheme, the middle part of the second end cover is not provided with a bearing chamber, and is only provided with a through hole, so that the rotating shaft part of the transmission shaft passes through the through hole and extends out of the second end cover.
Further, preferably, the bearing is capable of simultaneously carrying radial and axial loads.
Further, as a preferable scheme, the bearing is a double-row back-to-back mounted angular contact ball bearing.
Compared with the closest prior art, the technical scheme of the embodiment of the application has the following beneficial effects:
the screw rod and rotating shaft integrated motor transmission mechanism is used for converting the rotating motion of a motor into the linear motion of an actuating mechanism, a transmission shaft is arranged in a shell through a bearing, one end of the transmission shaft is provided with a rotating shaft part, and the other end of the transmission shaft is provided with a screw rod part; through the rotor core lug connection of pivot portion and motor, it is rotatory to drive the transmission shaft by rotor core, through the screw rod portion and the actuating mechanism lug connection who stretches out the casing, converts the rotary motion of transmission shaft into the linear motion of execution structure, makes actuating mechanism move along the axis direction of transmission shaft at screw rod portion. The screw rod and the rotating shaft are integrally designed, so that the mechanical property of the screw rod is more matched with the output performance of the motor, and the size and the weight of the motor can be conveniently controlled; an external linkage device is omitted, the size and the weight of the transmission mechanism are further reduced, and the installation space is saved. And, realize connecting fixedly through the bearing between transmission shaft and first end cover, no bearing is connected fixedly between transmission shaft and the second end cover, and the unilateral bearing motor of this kind of unilateral bearing support scheme has removed from at the second end cover design bearing room, has effectively shortened the axial length of motor.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. Wherein:
FIG. 1 is a front view of a screw spindle integrated motor drive provided in accordance with some embodiments of the present application;
FIG. 2 is a cross-sectional view of a lead screw spindle integrated motor drive provided in accordance with some embodiments of the present application;
fig. 3 is a side view of a lead screw spindle integrated motor drive provided in accordance with some embodiments of the present application.
Description of reference numerals:
101-an actuating mechanism, 102-a transmission shaft, 103-a first end cover, 104-a stator assembly, 105-a bearing, 106-a fastening nut, 107-a bearing gland, 108-a retainer ring, 109-a second end cover, 112-a screw rod part, 122-a rotating shaft part, 132-a bearing mounting part, 142-a bearing retaining shoulder, 201-an encoder, 211-an encoder rotor and 221-an encoder stator.
Detailed Description
The present application will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the application and are not limiting of the application. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present application cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
In the description of the present application, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present application but do not require that the present application must be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
Firstly, it should be noted that in the embodiment of the present application, taking a permanent magnet motor as an example, the motor includes a stator assembly, a rotor assembly, a casing, and other components; the stator assembly is fixedly connected with the shell, the rotor assembly and the stator assembly are coaxially arranged, and the rotor assembly is installed on the shell through a bearing. The rotor assembly comprises a rotating shaft, a rotor core, magnetic steel and the like, the rotating shaft and the rotor core are coaxially arranged, and the magnetic steel is arranged on the rotor core. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
As shown in fig. 1 to 3, the screw shaft integrated motor transmission mechanism for converting the rotary motion of the motor into the linear motion of the actuator 101 includes: a motor having a drive shaft 102 and a housing; the drive shaft 102 is mounted in the housing by means of bearings 105; one end of the transmission shaft 102 is a rotating shaft part 122 which is directly connected with a rotor core of the motor; the other end of the transmission shaft 102 is a screw rod part 112, which extends out of the housing and is directly connected with the actuator 101. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the transmission shaft 102 is installed in the housing through the bearing 105, and a rotation shaft portion 122 is provided at one end of the transmission shaft 102, and a lead screw portion 112 is provided at the other end; the rotating shaft part 122 is directly connected with a rotor core of the motor, and the rotor core drives the transmission shaft 102 to rotate; the actuator 101 is connected to a screw portion 112 extending out of the housing, and the actuator 101 is moved in the axial direction of the transmission shaft 102 at the screw portion 112 by converting the rotational motion of the transmission shaft 102 into the linear motion of the actuator 101. The screw rod and the rotating shaft are integrally designed, so that the mechanical property of the screw rod is more matched with the output performance of the motor, and the size and the weight of the motor can be conveniently controlled; an external linkage device is omitted, the size and the weight of the transmission mechanism are further reduced, and the installation space is saved. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some alternative embodiments, the housing comprises a first end cap 103 and a second end cap 109, the second end cap 109 being attached to the first end cap 103; the transmission shaft 102 is mounted on the first end cover 103 through a bearing 105 and is in unsupported connection with the second end cover 109; the screw rod 112 extends out of the first end cap 103 and is directly connected with the actuator 101. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the transmission shaft 102 is installed in the first end cover 103 through the bearing 105 and is in unsupported connection with the second end cover 109, and this way, the transmission shaft 102 is fixedly connected on the housing by using a single-side bearing, which effectively shortens the axial length of the motor. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, the transmission shaft 102 and the first end cover 103 are fixedly connected through the bearing 105, and the transmission shaft 102 and the second end cover 109 are fixedly connected without a bearing, so that a scheme of supporting a single-side bearing is realized. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the second end cap 109 is connected to the first end cap 103, and cooperates with the first end cap 103 to seal a rotor core and the like of the motor in the first end cap 103. Therefore, the rotor core, the rotating shaft part 122 and the like work in a relatively closed space, on one hand, the power transmission between the rotor core and the rotating shaft part 122 is prevented from being interfered, on the other hand, the working environment is ensured to be clean, and the service life is prolonged. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In a specific example, the first end cap 103 is a barrel structure with an open end, the second end cap 109 is detachably connected to the open end of the first end cap 103, and the transmission shaft 102 is mounted on the end of the first end cap 103 opposite to the open end through a bearing 105. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the second end cap 109 is detachably connected to the first end cap 103, for example, the second end cap 109 is fixed to the first end cap 103 by bolts, thereby facilitating installation and maintenance of the rotor core, the transmission shaft 102, and other components. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In this embodiment, a bearing chamber is disposed at an end opposite to an upper opening end of the first end cap 103, a bearing 105 is installed, the second end cap 109 is not provided with the bearing chamber, the transmission shaft 102 is fixed on the first end cap 103 through the bearing 105 and is in unsupported connection with the second end cap 109, after a rotor core of the motor is directly connected with a rotating shaft portion of the transmission shaft 102, components equivalent to the motor are supported only through the bearing 105 to form a single-side bearing support, the transmission shaft 102 is driven to rotate, and the actuator is driven to move along an axial direction of the transmission shaft 102. This single-sided bearing scheme eliminates the bearing chamber of the second end cap 109, effectively shortening the axial length of the motor. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some alternative embodiments, the first end cap 103 is provided with a bearing chamber for mounting an outer ring of the bearing 105, and correspondingly, the transmission shaft 102 is provided with a bearing mounting portion 132 located between the screw portion 112 and the rotation shaft portion 122 for mounting an inner ring of the bearing 105. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the first end cap 103 is provided with a bearing chamber for installing the outer ring of the bearing 105, the inner ring of the bearing 105 is connected with the bearing installing part 132 of the transmission shaft 102, thereby, the bearing 105 is installed in the first end cap 103, the screw part 112 on the transmission shaft 102 is located outside the first end cap 103, the rotating part is located inside the first end cap 103, that is, the actuator 101 and the rotor core are respectively located on both sides of the bearing 105, and when the rotor core drives the transmission shaft 102 to rotate, the actuator can move in the axial direction of the transmission shaft 102 at the screw part 112. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In a specific example, the transmission shaft 102 is provided with a bearing inner ring shoulder, which is located between the rotating shaft portion 122 and the bearing mounting portion 132; a bearing outer ring retaining shoulder is arranged in the first end cover 103; the bearing inner ring is tightly pressed on the bearing inner ring retaining shoulder through a fastening nut 106 so as to axially position the bearing inner ring; the bearing outer ring is pressed on the bearing outer ring retaining shoulder through the bearing gland 107 so as to axially position the bearing outer ring. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the fastening nut 106 is in threaded connection with the transmission shaft 102, and by screwing the fastening nut 106 and coating an adhesive, the bearing inner ring is pressed against the bearing shoulder 142, so as to prevent the bearing inner ring from moving axially; the bearing cover 107 is fastened (for example, bolted) with the first cover plate 103, and the bearing outer ring is pressed on the bearing outer ring shoulder through the bearing cover 107, so that the axial movement of the bearing outer ring is avoided. Thereby, the bearing 105 is fixedly installed in the first end cap 103 to form an effective support for the transmission shaft 102, and the movement of the transmission mechanism is smooth. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, further, a groove is further disposed on the transmission shaft 102, and is located at one end of the transmission shaft 102, which is close to the rotating shaft portion, and is used for installing the check ring 108; the retainer ring 108 is used for pressing the rotor core against the bearing inner ring retainer shoulder so as to axially position the rotor core. Therefore, the retainer ring 108 is installed in a matched mode with the groove, the rotor core is tightly pressed on the bearing inner ring retainer shoulder, and the axial fastening of the rotor core is achieved. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some alternative embodiments, the rotating shaft portion 122 is keyed to the rotor core so that the rotor core can drive the transmission shaft 102 to rotate. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the key connection between the rotating shaft portion 122 and the rotor core is simple and reliable in structure, which not only fully ensures the power transmission between the rotor core and the transmission shaft 102, but also facilitates the processing and manufacturing of the transmission shaft 102, and is beneficial to reducing the cost. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the rotating shaft portion 122 and the rotor core may be connected by a flat key, a wedge key, a spline, or other different methods, and may be specifically determined according to the magnitude of the transmitted power and the spatial dimension. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some alternative embodiments, the stator assembly 104 of the electric machine is circumferentially positioned in the first end cover 103 by a positioning pin to fixedly mount the stator assembly 104 in the first end cover 103, and the axis of the stator assembly 104 coincides with the axis of the rotor assembly. Therefore, the circumferential fastening of the rotor assembly is realized, the rotor assembly is prevented from jumping during rotation, and the stability of the rotor assembly in rotation along the axis of the rotor assembly is ensured. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some alternative embodiments, an end of the drive shaft 102 near the shaft portion 122 extends out of the second end cover 109 to mount the encoder rotor 211 of the encoder 201. Correspondingly, the encoder stator 221 of the encoder 201 is mounted on the second end cover 109. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, the encoder rotor 211 of the encoder 201 is installed at the end part of the transmission shaft 102 extending out of the second end cover 109, and the encoder stator 221 of the encoder 201 is correspondingly installed on the second end cover 109, so that the angle of the transmission shaft 102 during rotation is detected, the real-time position of magnetic steel in a rotor assembly is monitored, the motor is accurately controlled, and the motion precision of the transmission mechanism is effectively improved. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In a specific example, the encoder 201 is a magneto-electric encoder. The encoder rotor 211 of the magnetoelectric encoder is arranged at the end part of the transmission shaft 102, and the magnetic induction device generates and provides the absolute position of the transmission shaft 102 by utilizing the change of a magnetic field, so that the position of the magnetic steel in the rotor assembly is detected in real time, and the accurate control of the motor is realized. Moreover, the magnetoelectric encoder is small in size and high in precision, and when the magnetoelectric encoder is used for detecting the angle position of the rotating shaft 102, not only can higher control precision be achieved, but also the requirement on the installation space can be effectively reduced, and the axial size of the motor can be effectively shortened. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In a specific example, the second end cap 109 is not provided with a bearing chamber in the middle, but is provided with a through hole, so that the rotating shaft portion 122 of the transmission shaft 102 extends out of the second end cap 109 through the through hole. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, since no bearing chamber is disposed in the middle of the second end cover 109, the magnetoelectric encoder may be mounted at the end of the transmission shaft 102, and of course, other position sensors having a size similar to that of the magnetoelectric encoder may be selected, for example, a rotary transformer, a photoelectric encoder, and the like, and the structural shape and the size of the position sensor are selected based on the end that can be mounted on the transmission shaft. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the middle of the second end cap 109 is not provided with a bearing chamber, but has a cavity recessed towards the first end cap 103, and the through hole is located in the middle of the cavity, so as to arrange the stator of the encoder in the cavity. Therefore, the structure of the second end cover 109 is more compact, the structural space of the second end cover 109 is fully utilized, and the axial size of the transmission structure is reduced. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, the rotating shaft portion 122 passes through the central through hole of the second end cover 109 and extends out of the second end cover 109, and the second end cover 109 has no bearing chamber. Thereby, the end space surrounded by the second end cover 109 and the first end cover 103 is utilized, and the axial length of the motor shaft portion 122 and the motor is shortened. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the present application, no bearing chamber is provided in the second end cover 109, and the motor is supported only on one side by the bearing 105 arranged in the bearing chamber of the first end cover 103, so that the single-side bearing motor not only effectively shortens the axial dimension, but also the second end cover 109 does not bear the radial force from the rotor assembly and the transmission shaft 102, and the material selection and size design thereof can be considered from the aspects of weight and cost, which is beneficial to reducing the overall weight of the single-side bearing motor and saving the cost. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In some alternative embodiments, according to newton's third law of motion, the axial thrust transmitted by the motor through the screw acts on the bearing 105 via the transmission shaft 102, so that the bearing 105 can simultaneously bear both radial and axial loads. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In a specific example, the bearings 105 are double row, back-to-back mounted angular contact ball bearings. Thereby, radial and axial forces are taken up by the angular contact ball bearings to ensure that the transmission can take up and provide sufficiently large axial forces without axial play. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the embodiment of the application, the rotor assembly and the actuator 101 are respectively located at two sides of the bearing 105, the design of the screw part 112 and the rotating shaft part 122 and the selection of the bearing installation part 132 enable the rotor assembly and the actuator to meet the 'lever balance condition', double-row and back-to-back-mounted angular contact ball bearings are adopted to increase the contact area between the bearing inner ring and the bearing installation part 132, the transmission shaft 102 can be better avoided from generating a seesaw effect by taking the contact surface of the bearing 105 and the bearing installation part 132 as a fulcrum, and the coaxiality between the stator assembly 104, the rotor assembly and the transmission shaft 102 of the motor is ensured. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
In the integrative motor drive of lead screw pivot disclosed in the embodiment of the present application, bearing installation portion 132 is located between lead screw portion 112 and pivot portion 122 of transmission shaft 102, lead screw portion 112 and pivot portion 122 this moment, constitute lever structure with the contact surface of bearing installation portion 132 and bearing 105 as the fulcrum, through to lead screw portion 112, behind the design of pivot portion 122 and the selection of bearing installation portion 132 make it satisfy "lever balance condition" alright be the mode that the motor design supports for the unilateral bearing, no support connection between second end cover 109 and the transmission shaft 102 that originally need bear the partial gravity of rotor assembly, thereby remove the bearing chamber of second end cover 109 from. The second end cover 109 can be designed to be concave, and the space inside the second end cover 109 is fully utilized, so that the axial lengths of the transmission shaft 102 and the motor are greatly shortened, the transmission structure is simplified, and the length and the weight of the whole machine are reduced; the screw rod and rotating shaft integrated transmission mechanism avoids an external mechanical linkage device, and reduces the weight of the whole device; the integrated design enables the mechanical property of the screw rod to be matched with the output performance of the motor, and the cost is reduced while the best use of the materials is realized. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides an integrative motor drive mechanism of lead screw pivot for the rotary motion of with the motor converts the linear motion of actuating mechanism into, its characterized in that, drive mechanism includes: a motor having a drive shaft and a housing, the drive shaft being mounted in the housing by a bearing;
one end of the transmission shaft is a rotating shaft part which is directly connected with a rotor iron core of the motor; the other end of the transmission shaft is a screw rod part which extends out of the shell and is directly connected with the actuating mechanism.
2. The transmission mechanism as claimed in claim 1, wherein the housing includes a first end cap and a second end cap, the second end cap being connected to the first end cap;
the transmission shaft is arranged on the first end cover through the bearing and is in unsupported connection with the second end cover; wherein the wire rod part extends out of the first end cover.
3. The transmission mechanism as claimed in claim 2, wherein the first end cap is a barrel structure with an open end, the second end cap is detachably connected to the open end of the first end cap, and the transmission shaft is mounted on the first end cap at an end opposite to the open end through the bearing.
4. The transmission mechanism as claimed in claim 2, wherein the first end cap is provided with a bearing chamber for mounting a bearing outer race of the bearing,
in a corresponding manner, the first and second optical fibers are,
the transmission shaft is provided with a bearing installation part which is positioned between the screw rod part and the rotating shaft part and used for installing a bearing inner ring of the bearing.
5. The transmission mechanism according to claim 4, wherein the transmission shaft is provided with a bearing inner ring shoulder between the rotating shaft portion and the bearing mounting portion; a bearing outer ring retaining shoulder is arranged in the first end cover;
the bearing inner ring is tightly pressed on the bearing inner ring retaining shoulder through a fastening nut; the bearing outer ring is pressed on the bearing outer ring retaining shoulder through the bearing gland.
6. The transmission mechanism according to claim 2, wherein one end of the transmission shaft near the rotating shaft portion extends out of the second end cover to mount an encoder rotor of an encoder;
correspondingly, the encoder stator of the encoder is mounted on the second end cap.
7. The transmission mechanism as recited in claim 6, wherein the encoder is a magneto-electric encoder.
8. The transmission mechanism according to claim 6, wherein no bearing chamber is provided in the middle of the second end cap, and only a through hole is provided, so that one end of the transmission shaft close to the rotating shaft portion extends out of the second end cap through the through hole.
9. A drive mechanism according to any one of claims 1 to 8, wherein the bearing is capable of carrying both radial and axial loads.
10. The transmission according to claim 9, wherein the bearings are double row, back-to-back mounted angular contact ball bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021811182.8U CN212462994U (en) | 2020-08-26 | 2020-08-26 | Integrative motor drive mechanism of lead screw pivot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021811182.8U CN212462994U (en) | 2020-08-26 | 2020-08-26 | Integrative motor drive mechanism of lead screw pivot |
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| Publication Number | Publication Date |
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| CN212462994U true CN212462994U (en) | 2021-02-02 |
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| CN202021811182.8U Active CN212462994U (en) | 2020-08-26 | 2020-08-26 | Integrative motor drive mechanism of lead screw pivot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821685A (en) * | 2021-02-23 | 2021-05-18 | 江西江特电机有限公司 | Design method for saving axial space of motor |
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2020
- 2020-08-26 CN CN202021811182.8U patent/CN212462994U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821685A (en) * | 2021-02-23 | 2021-05-18 | 江西江特电机有限公司 | Design method for saving axial space of motor |
| CN112821685B (en) * | 2021-02-23 | 2022-08-26 | 江西江特电机有限公司 | Design method for saving axial space of motor |
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