CN217063487U

CN217063487U - Be applied to planet roller lead screw of electric jar

Info

Publication number: CN217063487U
Application number: CN202122870751.7U
Authority: CN
Inventors: 张法强; 汪国勇; 杨兴鸿
Original assignee: Guangdong Peimin Intelligent Technology Co ltd
Current assignee: Guangdong Peimin Intelligent Technology Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-07-26
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses an application of a planetary roller lead screw electric cylinder, which comprises an electric cylinder shell body, and also comprises working internal parts, a gear train combination and a trapezoidal thread screw sleeve, wherein the trapezoidal thread screw sleeve is fixedly connected with the inner wall of the electric cylinder shell body, the gear train combination comprises a planetary gear train support, a sun wheel and a planetary gear train wheel, a circular groove is arranged in the electric cylinder shell body, the planetary gear train support is movably sleeved in the circular groove, the planetary gear train wheel is fixedly sleeved in the planetary gear train support, the side edge of the planetary gear train wheel is movably connected with the sun wheel, the utility model discloses through the arrangement of the working internal parts, the installation and maintenance are easy, the commercial oil cylinder and a servo electric cylinder are replaced without redesign, the integrated modular packaging is realized, the protection grade is high in adaptability to various working environments, such as high dust, high humidity explosion-proof grade requirement, and even can be directly placed in liquid, compared with a hydraulic oil cylinder, the hydraulic oil cylinder has small volume and small occupied space because a hydraulic auxiliary system is not needed.

Description

Be applied to planet roller lead screw of electric jar

Technical Field

The utility model relates to an industrial manufacturing technical field, more specifically relate to a be applied to planet roller lead screw of electric jar.

Background

The electric cylinder is a modularized product which integrates the servo motor and the lead screw, the rotary motion of the servo motor is converted into linear motion, and meanwhile, the electric cylinder can be used for controlling the optimal advantage of the servo motor, the accurate rotating speed, the accurate revolution and the accurate torque into the accurate speed, the accurate position and the accurate thrust, so that a brand new revolutionary product of a high-precision linear motion series is realized.

The existing mechanical equipment has higher requirements on high load and stability and noise, so that a screw rod serving as a key transmission component has to work under the conditions of high speed and heavy load and requires good stability, small vibration and low noise, a planetary gear train of a commercial planetary roller screw rod consists of straight gears, has poor stability and vibration, threads of a roller screw rod and a thread sleeve are common threads and have limited bearing capacity, trapezoidal threads are used in the planetary gear train, the bearing capacity of the screw rod is greatly improved, the planetary gear train consists of involute helical gears, the planetary gear train runs stably, has low noise and strong bearing capacity, the use environment of the existing mechanical equipment has higher and higher requirements on high load capacity, high protection level, firm appearance, small size and easy installation and maintenance of assembly modularization, so that an oil cylinder or a servo electric cylinder serving as key power output has to continuously and stably output high power under the condition of adapting to various working environments, and is easy to install and maintain.

Disclosure of Invention

In order to overcome the above-mentioned defects of the prior art, the utility model provides a be applied to electric jar's planet roller lead screw to solve the problem that exists among the above-mentioned background art.

The utility model provides a following technical scheme: the utility model provides a be applied to planet roller lead screw of electric jar, includes electric jar shell body, still includes:

working internal parts: the inner part of the electric cylinder outer shell is fixedly connected with a working inner part;

the gear train combination: the side edge of the working internal part is movably connected with a wheel train combination;

trapezoidal thread turnbuckle: the inner wall of the electric cylinder shell is fixedly connected with a trapezoidal thread screw sleeve.

Furthermore, the gear train combination comprises a planetary gear train support, a sun gear and a planetary gear train, wherein a circular groove is formed in the electric cylinder shell, the planetary gear train support is movably sleeved in the circular groove, the planetary gear train wheel is fixedly sleeved in the planetary gear train support, the side edge of the planetary gear train wheel is movably connected with the sun gear, threads are arranged at the upper end of the sun gear, and the threads are embedded with the side edge of the planetary gear train wheel.

Further, work internals includes electric jar terminal box, rotary encoder, servo motor rotor, bearing, servo motor stator, electric jar mounting flange, the electric jar terminal box of side fixedly connected with electricity of electricity jar shell body, rotary encoder has been cup jointed in the activity of the inside circular slot of electricity jar shell body, rotary encoder's lower fixed surface is connected with servo motor rotor, servo motor rotor's side swing joint has the bearing, the servo motor stator has been seted up to the lower surface of bearing, the lower fixed surface of electricity jar shell body is connected with electric jar mounting flange, the side of electricity jar terminal box is equipped with interconnect between special wire and the rotary encoder, guarantees the output of power.

Further, the diameter of the inner wall of the diameter electric cylinder shell body of the trapezoidal thread insert is equal in size and is trapezoidal upwards, and the fact that the gear train combination is overall to move up and down along the direction of the electric cylinder shell body can be guaranteed.

Furthermore, a circular hole is formed in the planetary gear train support, the diameter of the circular hole is equal to that of one end of the sun gear, the sun gears are twelve groups, the sun gears are symmetrically arranged among the planetary gear train supports, and the central part of the planetary gear train support is movably sleeved with two ends of the sun gear, so that the integral power is integrated, and the lossless output of the power is ensured.

Furthermore, the servo motor rotor is used as a motor rotation output shaft, the center part of the servo motor rotor is sealed at the upper end of the servo motor rotor and is connected with the rotary encoder, the lower half part of the servo motor rotor is used as a shaft diameter and is matched with the placed bearing inner ring to serve as a motor rotor or an armature to install a magnet, and therefore the rotary encoder drives the servo motor rotor to enable the planetary gear train support to integrally rotate.

Furthermore, the servo motor rotor is designed according to the appearance standard of a hydraulic oil cylinder, a fixed rotary encoder is installed at the position of a center core inside the top end of the servo motor rotor, the rotary encoder is connected with the top end of an output shaft of the motor, and the lower half part of the rotary encoder is fixedly matched with an outer ring of a bearing, so that the electric energy can be converted into mechanical energy to rotate the servo motor rotor while the internal sealing performance of working internal parts can be guaranteed.

Furthermore, the center of the lower end of the rotor of the servo motor is provided with a hole, one end of the sun wheel extends out to form a sufficient length to serve as a power output shaft of the servo electric cylinder, and a mechanical seal is adopted between the power output shaft and a matching hole of the power output shaft, so that the machine can work in various environments, and even the inside work of liquid can keep good sealing performance.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a be equipped with work internals, the installation is maintained easily, replaces commercially available hydro-cylinder and servo electric jar and need not redesign, and installs environmental suitability strong, and integrative modularization encapsulation, and the protection level height is adapted to various operational environment, like high dust, in the high environment of the explosion-proof grade requirement of high humidity, can directly arrange in liquid even.

2. The utility model discloses a be equipped with the train combination, contrast hydraulic cylinder is because it is small occupation space few that need not hydraulic auxiliary system, and relative light in weight is the ideal substitute of power unit (pneumatic cylinder) in the deep sea detector, but wide application in aviation, space flight, navigation, underwater detection contrasts servo electric jar in the market, and its bearing capacity is high, and the collection moulding piece degree is high, and axial length is shorter, and the shell is firm, and the protection level is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the overall structure diagram of the working internal parts of the present invention.

Fig. 3 is the schematic diagram of the internal structure of the rotor of the servo motor of the present invention.

Fig. 4 is a schematic structural diagram of the gear train assembly of the present invention.

Fig. 5 is the internal structure diagram of the electric cylinder casing of the present invention.

The reference signs are: 1. an electric cylinder outer casing; 2. working internal parts; 201. an electric cylinder junction box; 202. a rotary encoder; 203. a servo motor rotor; 204. a bearing; 205. a servo motor stator; 3. combining wheel trains; 301. a planetary gear train support; 302. a sun gear; 303. a star wheel; 4. trapezoidal thread turnbuckle.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and the forms of the structures described in the following embodiments are merely examples, and the present invention relates to a planetary roller screw applied to an electric cylinder is not limited to the structures described in the following embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.

The first embodiment is as follows: referring to fig. 1 and 2, the utility model provides a be applied to planet roller lead screw of electric jar, including electric jar shell body 1, still include:

working inner part 2: the inside of the electric cylinder outer shell 1 is fixedly connected with a working internal part 2;

wheel train combination 3: the side edge of the working internal part 2 is movably connected with a wheel train combination 3;

trapezoidal thread insert 4: the inner wall of the electric cylinder outer shell 1 is fixedly connected with a trapezoidal thread screw sleeve 4.

Referring to fig. 4, the gear train assembly 3 includes a planetary gear train support 301, a sun gear 302, and a planetary gear train 303, a circular groove is formed inside the electric cylinder outer casing 1, the planetary gear train support 301 is movably sleeved inside the circular groove, the planetary gear train 303 is fixedly sleeved inside the planetary gear train support 301, and the sun gear 302 is movably connected to a side edge of the planetary gear train 303.

Referring to fig. 2, the work inner part 2 includes an electric cylinder terminal box 201, a rotary encoder 202, a servo motor rotor 203, a bearing 204, a servo motor stator 205, an electric cylinder mounting flange 206, the side fixedly connected with electric cylinder terminal box 201 of the electric cylinder outer shell 1, the rotary encoder 202 has been cup jointed in the circular slot activity of the inside of the electric cylinder outer shell 1, the lower surface fixedly connected with servo motor rotor 203 of the rotary encoder 202, the side movably connected with bearing 204 of the servo motor rotor 203, the servo motor stator 205 has been seted up to the lower surface of the bearing 204, the lower surface fixedly connected with electric cylinder mounting flange 206 of the electric cylinder outer shell 1.

Referring to fig. 5, the diameter of the inner wall of the outer cylinder shell 1 of the trapezoidal thread insert 4 is equal in size and is upward in a trapezoidal shape.

Referring to fig. 3, a circular hole is formed inside the planetary gear train support 301, the diameter of the circular hole is equal to the diameter of one end of the sun gear 302, the sun gears 302 are twelve groups, the sun gears 302 are symmetrically arranged between the planetary gear train supports 301, and the central portion of the planetary gear train support 301 is movably sleeved with two ends of the sun gear 302.

Referring to fig. 2, a servo motor rotor 203 is selected as a motor rotation output shaft, the upper end of the servo motor rotor is closed, the center part of the servo motor rotor is connected with a rotary encoder 202, the lower half part of the servo motor rotor is used as a shaft diameter, and an inner ring of a bearing 204 is placed in a matching mode to essentially serve as a motor rotor or an armature mounting magnet.

Referring to fig. 2, the servo motor rotor 203 is designed according to the standard of the appearance of a hydraulic oil cylinder, a fixed rotary encoder 202 is arranged at the center position inside the top end of the servo motor rotor, the rotary encoder 202 is connected with the top end of the motor output shaft, and the lower half part of the rotary encoder is fixedly matched with the outer ring of a bearing 204

Referring to fig. 2, a hole is formed in the center of the lower end of the servo motor rotor 203, a sufficient length is extended from one end of the sun gear 302 to serve as a power output shaft of the servo electric cylinder, and a mechanical seal is adopted between the power output shaft and a matching hole of the power output shaft.

The embodiment of the utility model provides a theory of operation of one: the electric cylinder junction box 201 is powered, then a power supply in the electric cylinder junction box 201 is transmitted to the inside of the rotary encoder 202 through a lead for conversion, the electromagnetic operation principle of the servo motor rotor 203 and the bearing 204 is utilized, so that the servo motor rotor 203 rotates, then the planetary gear train support 301 in the servo motor rotor 203 and the sun wheel 302 are driven to rotate together, the fixing effect of the servo motor stator 205 is utilized, so that the sun wheel 302 is used as an output shaft for carrying out the displacement, the original electric cylinder principle is achieved, the device is easy to install and maintain because of internal parts, the device replaces commercially available oil cylinders and servo electric cylinders without redesign, the environmental suitability of the device is strong, the device is integrally modularized and packaged, the protection level is high in adaptability to various working environments, such as high dust, high humidity and explosion-proof level, and even can be directly placed in liquid, compared with a commercially available servo electric cylinder, the high-performance hydraulic oil cylinder has the advantages of high bearing capacity, high integrated module degree, short axial length, firm shell and high protection level.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to common designs, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the foregoing is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the invention, and any modifications, equivalent alterations, improvements and the like made within the spirit and principle of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a be applied to planet roller lead screw of electric jar, includes electric jar shell body (1), its characterized in that still includes:

working inner part (2): the inner part of the electric cylinder outer shell (1) is fixedly connected with a working inner part (2);

wheel train combination (3): the side edge of the working internal part (2) is movably connected with a wheel train combination (3);

trapezoidal thread insert (4): the inner wall of the electric cylinder outer shell (1) is fixedly connected with a trapezoidal thread turnbuckle (4).

2. A planetary roller screw applied to an electric cylinder according to claim 1, characterized in that: the gear train combination (3) comprises a planetary gear train support (301), a sun gear (302) and a planetary gear train (303), a circular groove is formed in the electric cylinder outer shell (1), the planetary gear train support (301) is movably sleeved in the circular groove, the planetary gear train (303) is fixedly sleeved in the planetary gear train support (301), and the sun gear (302) is movably connected to the side edge of the planetary gear train (303).

3. A planetary roller screw applied to an electric cylinder according to claim 1, characterized in that: work internals (2) are including electric jar terminal box (201), rotary encoder (202), servo motor rotor (203), bearing (204), servo motor stator (205), electric jar mounting flange (206), side fixedly connected with electric jar terminal box (201) of electric jar shell body (1), rotary encoder (202) have been cup jointed in the circular slot activity of electric jar shell body (1) inside, the lower fixed surface of rotary encoder (202) is connected with servo motor rotor (203), the side swing joint of servo motor rotor (203) has bearing (204), servo motor stator (205) have been seted up to the lower surface of bearing (204), the lower fixed surface of electric jar shell body (1) is connected with electric jar mounting flange (206).

4. A planetary roller screw applied to an electric cylinder according to claim 1, characterized in that: the diameter of the inner wall of the diameter electric cylinder outer shell (1) of the trapezoidal thread insert (4) is equal in size and is trapezoidal and upward.

5. A planetary roller screw applied to an electric cylinder according to claim 2, characterized in that: the planetary gear train support (301) is internally provided with a circular hole, the diameter of the circular hole is equal to that of one end of the sun gear (302), the sun gears (302) are twelve groups, the sun gears (302) are symmetrically arranged among the planetary gear train support (301), and the central part of the planetary gear train support (301) is movably sleeved with two ends of the sun gear (302).

6. A planetary roller screw applied to an electric cylinder according to claim 2, characterized in that: a servo motor rotor (203) is selected as a motor rotating output shaft, the upper end of the servo motor rotor is closed, the center of the servo motor rotor is connected with a rotary encoder (202), the lower half part of the servo motor rotor is used as a shaft diameter, and an inner ring of a bearing (204) is placed in a matching mode to be used as a motor rotor or an armature mounting magnet.

7. A planetary roller screw applied to an electric cylinder according to claim 3, characterized in that: the servo motor rotor (203) is designed according to the standard of the appearance of a hydraulic oil cylinder, a fixed rotary encoder (202) is arranged at the position of a center core in the top end of the servo motor rotor, the rotary encoder (202) is connected with the top end of a motor output shaft, and the lower half part of the rotary encoder is fixedly matched with the outer ring of a bearing (204).

8. A planetary roller screw applied to an electric cylinder according to claim 3, wherein: the center of the lower end of the servo motor rotor (203) is provided with a hole, one end of the sun wheel (302) extends out to be long enough to serve as a servo electric cylinder output shaft, and mechanical sealing is adopted between the output shaft and a matching hole of the output shaft.