CN210484540U - Gear transmission mechanism of high-thrust electric cylinder - Google Patents
Gear transmission mechanism of high-thrust electric cylinder Download PDFInfo
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- CN210484540U CN210484540U CN201921227848.2U CN201921227848U CN210484540U CN 210484540 U CN210484540 U CN 210484540U CN 201921227848 U CN201921227848 U CN 201921227848U CN 210484540 U CN210484540 U CN 210484540U
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Abstract
The utility model relates to a gear transmission mechanism of a high-thrust electric cylinder, which comprises a housing and a transmission component, wherein the transmission component is arranged in the housing and comprises a first transmission gear, a middle transition gear and a second transmission gear; the second transmission gear is arranged on the ball screw pair, and the first transmission gear, the middle transition gear and the second transmission gear are sequentially meshed and connected. When the gear transmission mechanism is designed, the transmission mechanism adopts a multi-stage gear transmission mode to carry out transmission, and the pitch circle diameter of a single gear is reduced, so that the total volume is reduced.
Description
Technical Field
The utility model belongs to the technical field of the electric jar transmission technique and specifically relates to a gear drive of high thrust electric jar.
Background
The parallel electric cylinder generally adopts a synchronous belt pulley to transmit power, but the synchronous belt is easy to wear and age in the using process, and the power transmission failure is easy to generate in the power transmission process, so that the transmission mechanical efficiency is low; meanwhile, a synchronous wheel tensioning device needs to be additionally arranged on the structure. In addition, because the hold-in range is more easy to wear out and became invalid, need regularly to maintain the change work to the product. However, due to the limitation of the installation and application of the product structure, the installation and maintenance are complex and tedious.
Fig. 1 shows a turning type high-thrust electric cylinder of a motor with a conventional structure. 1. 5 are synchronous pulley, 3 are the hold-in range, 2 are the ball screw pair, 4 are speed reducer or servo motor, and a set of synchronous belt transmission system is constituteed to these spare part, transmits servo motor's rotary motion and moment of torsion to the ball screw pair to drive the electric cylinder and carry out linear motion. Wherein 1 synchronous pulley and 2 ball screw pair adopt the key-type connection to fix, 5 synchronous pulleys and 4 speed reducers adopt the key-type connection to fix, 3 synchronous belt connection 1, 2 synchronous pulleys.
For the electric cylinder with low power or low thrust, the structure is adopted, the design is relatively convenient, the structure is simple, and the cost is low. However, for a push rod with large thrust, the output torque of the motor is large, and the synchronous belt needs to transmit large tension. The synchronous belt has an extension rate, and the extension amount is increased along with the increase of the tensile force, so that the transmission precision of a transmission system is influenced. The hold-in range material is rubber material usually, when needing frequent forward and reverse use when bearing great pulling force, the flank of tooth of belt impaired can be more serious, influences the hold-in range life-span. Therefore, when the synchronous belt transmission mechanism is applied to the high-thrust electric cylinder, certain risks exist, and the reliability is relatively low.
Disclosure of Invention
Adopt synchronous belt drive's defect to the electric jar of high thrust, the utility model aims at providing a replace original synchronous belt drive mechanism with gear drive, one set of transmission system is constituteed to these spare parts, and is vice with servo motor's rotary motion and torque transmission to ball to it carries out linear motion to drive the electric jar.
For realizing the utility model discloses the following technical scheme who takes:
a gear transmission mechanism of a high-thrust electric cylinder is characterized in that,
comprises a housing and a transmission component, the transmission component is arranged in the housing,
the transmission assembly comprises a first transmission gear, a middle transition gear and a second transmission gear;
the first transmission gear is arranged on a motor shaft,
the intermediate transition gear is arranged on the intermediate gear shaft; a pair of deep groove ball bearings are arranged for supporting, an intermediate gear shaft is arranged and fixed on the housing,
the second transmission gear is arranged on the ball screw pair, and the first transmission gear, the middle transition gear and the second transmission gear are sequentially meshed and connected;
the ball screw pair is fixed on the bearing seat through a tapered roller bearing, an inner ring of the tapered roller bearing is matched with a shaft shoulder at the end part of the ball screw pair, an outer ring of the tapered roller bearing is matched with an inner hole surface of the bearing seat, and the ball screw pair is fixed in the axial direction through a spacing ring and a locking nut;
the right side of the second transmission gear is axially attached to a shaft shoulder surface of the ball screw pair through a second right spacer ring, a second left spacer ring is arranged on the left side surface of the second transmission gear in a close fit mode, and a second axial pressing plate is arranged at the left end of the ball screw pair;
the right side of the first transmission gear is provided with a first right spacing ring to enable the right side direction of the gear to be tightly attached to the installation step surface of the motor, and the left side of the first transmission gear is provided with a first left spacing ring; and a first axial pressing plate is fixedly arranged at the left end of the motor shaft for installation and matching.
Furthermore, a key connection is adopted between the first transmission gear and the motor shaft.
Has the advantages that:
the gear transmission mechanism is used for replacing the original synchronous belt transmission mechanism. The structural rigidity, the reliability and the service life are greatly improved. For the occasions with low requirements on transmission precision and relatively low rotating speed, straight-tooth gear transmission is adopted. And for the occasions with higher transmission precision requirement or higher rotating speed, the helical gear transmission is adopted. Because the center distance between the motor and the electric cylinder has certain requirements, the electric cylinder and the motor are required to be ensured not to interfere, and the size of the gear box is not too large. When the gear transmission mechanism is designed, a multi-stage gear transmission mode is adopted for transmission, and the pitch circle diameter of a single gear is reduced, so that the total volume is reduced. The belt is complicated in structural design due to the adoption of multi-stage gear transmission.
Drawings
Fig. 1 is a structural view of a conventional electric cylinder transmission mechanism.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-2, in this embodiment, the gear transmission mechanism of the high-thrust electric cylinder is particularly suitable for high-thrust situations with high requirements on safety, reliability and service life, such as an opening and closing mechanism of a silicon wafer vacuum coating cavity door, and is used in a working condition with relatively high thrust, for example, a situation that the push rod is required to exert a force above 10T, or a situation that a user designates that synchronous belt transmission cannot be used in the area.
A gear transmission mechanism of a high-thrust electric cylinder is characterized in that,
comprises a housing 11 and a transmission component, wherein the transmission component is arranged in the housing 11,
the transmission assembly comprises a first transmission gear 10, an intermediate transition gear 8 and a second transmission gear 6;
the first transmission gear 10 is installed on the motor shaft 9, the first transmission gear 10 is used for transmitting the torque of the servo motor,
the intermediate transition gear 8 is arranged on an intermediate gear shaft 12; by arranging a pair of deep groove ball bearings 13 for supporting, the intermediate gear shaft 12 is fixedly arranged on the housing 11, the intermediate gear shaft 12 can not rotate or move, and only plays a role of supporting the intermediate transition gear 8.
The second transmission gear 6 is arranged on the ball screw pair 7, and the first transmission gear 10, the middle transition gear 8 and the second transmission gear 6 are sequentially meshed and connected;
the ball screw pair 7 is fixed on a bearing seat 22 through a tapered roller bearing 21, an inner ring of the tapered roller bearing 21 is matched with a shaft shoulder at the end part of the ball screw pair 7, an outer ring of the tapered roller bearing 21 is matched with an inner hole surface of the bearing seat 22, and the ball screw pair is fixed in the axial direction through a spacing ring 23 and a locking nut 20;
the right side of the second transmission gear 6 is tightly attached to the shaft shoulder surface of the ball screw pair 7 in the axial direction through a second right spacer ring 18, a second left spacer ring 17 is arranged on the left side surface of the second transmission gear 6 in a tightly attached mode, and a second axial pressing plate 19 is arranged at the left end of the ball screw pair 7; the second axial pressure plate 19 presses the second transmission gear 6 in the axial direction;
the right side of the first transmission gear 10 is tightly attached to the installation step surface of the motor in the right side direction through arranging a first right spacing ring 16, and the left side of the first transmission gear 10 is provided with a first left spacing ring 15; and a first axial pressing plate 14 is fixedly arranged at the left end of the motor shaft 9 for installation and matching. The first axial pressing plate 14 presses the first transmission gear 10 in the axial direction;
further, a key connection is adopted between the first transmission gear 10 and the motor shaft 9. The position is limited and fixed in the radial direction,
the servo motor gives out pulse signals through external control equipment, and a motor shaft starts to rotate to transmit torque. The first transmission gear 10 is driven to rotate, and the first transmission gear 10 is meshed with the middle transition gear 8 and is supported by bearings 13 at two ends of a middle gear shaft 12 to rotate;
the intermediate transition gear 8 drives the second transmission gear 6 to rotate, and drives the ball screw pair 7 supported by the bearing to rotate.
The parts form a 2-stage gear transmission system together, and the rotary motion and the torque of the servo motor are transmitted to the ball screw pair, so that the electric cylinder is driven to perform linear motion.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (2)
1. A gear transmission mechanism of a high-thrust electric cylinder is characterized in that,
comprises a housing (11) and a transmission component, the transmission component is arranged in the housing (11),
the transmission assembly comprises a first transmission gear (10), a middle transition gear (8) and a second transmission gear (6);
the first transmission gear (10) is arranged on a motor shaft (9),
the middle transition gear (8) is arranged on a middle gear shaft (12) and is supported by a pair of deep groove ball bearings (13), the middle gear shaft (12) is arranged and fixed on the housing (11),
the second transmission gear (6) is arranged on the ball screw pair (7), and the first transmission gear (10), the middle transition gear (8) and the second transmission gear (6) are sequentially meshed and connected;
the ball screw pair (7) is fixed on a bearing seat (22) through a tapered roller bearing (21), the inner ring of the tapered roller bearing (21) is matched with the end shaft shoulder of the ball screw pair (7), the outer ring of the tapered roller bearing (21) is matched with the inner hole surface of the bearing seat (22), and the ball screw pair is fixed in the axial direction through a spacing ring (23) and a locking nut (20);
the right side of the second transmission gear (6) is axially attached to the shaft shoulder surface of the ball screw pair (7) through a second right spacing ring (18), a second left spacing ring (17) is arranged on the left side surface of the second transmission gear (6) in a close mode, a second axial pressing plate (19) is installed, and a second axial pressing plate (19) is arranged at the end head of the left side of the ball screw pair (7);
the right side of the first transmission gear (10) is tightly attached to the installation step surface of the motor in the right side direction through a first right spacing ring (16), and a first left spacing ring (15) is arranged on the left side of the first transmission gear (10); and a first axial pressure plate (14) is fixedly arranged at the left end of the motor shaft (9) for installation and matching.
2. The gear transmission mechanism of the high-thrust electric cylinder is characterized in that a key connection is adopted between the first transmission gear (10) and the motor shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921227848.2U CN210484540U (en) | 2019-07-31 | 2019-07-31 | Gear transmission mechanism of high-thrust electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921227848.2U CN210484540U (en) | 2019-07-31 | 2019-07-31 | Gear transmission mechanism of high-thrust electric cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210484540U true CN210484540U (en) | 2020-05-08 |
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ID=70533698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921227848.2U Active CN210484540U (en) | 2019-07-31 | 2019-07-31 | Gear transmission mechanism of high-thrust electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210484540U (en) |
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2019
- 2019-07-31 CN CN201921227848.2U patent/CN210484540U/en active Active
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