Double-screw servo electric cylinder

Abstract

The utility model discloses a twin-screw servo electric cylinder which comprises telescopic rods, an electric cylinder body, a gear box and screws, the gear box is arranged at the bottom end of the electric cylinder body, the two screws are arranged in the electric cylinder body, and the two screws are both provided with the telescopic rods capable of being driven and controlled by lead screws. The double screws are arranged in the cylinder body of the electric cylinder, the two telescopic rods are arranged on the double screws, the mounting plates are arranged at the ends of the two telescopic rods, the electric cylinder can be connected with a workpiece at the same time through the mounting plates, the jacking stability and strength can be improved, the second driven gears are arranged at the ends of the double screws, and the double screws can be driven by the second driven gears. The two second driven gears are in gear transmission with a transmission gear at one end of a transmission rod, so that the double screws can be controlled to rotate at the same time, the use is convenient, and the efficiency is high; a driving gear and a first driven gear which can be in mutual gear transmission are arranged in the gearbox, and the driving gear is automatically controlled through a servo motor and can drive the transmission rod to rotate.

Description

Technical Field

[0001] The utility model relates to the field of electric cylinders, in particular to a double-screw servo electric cylinder. Background Technique

[0002] An electric cylinder is a modular product integrating a servo motor and a lead screw, which converts the rotational motion of the servo motor into a linear motion. At the same time, it converts the best advantages of the servo motor - precise rotational speed control, precise revolution control, and precise torque control - into - precise speed control, precise position control, and precise thrust control; it is a brand-new revolutionary product for realizing a high-precision linear motion series;

[0003] For example, the authorized patent (electric cylinder reduction gearbox) with the publication number of CN220268368U: includes: a gear box body; a multi-stage gear assembly for connecting a power source and slidably connected to the electric cylinder assembly; a secondary box body connected to one side of the gear box body and penetrated by the electric cylinder assembly; a first tapered bearing arranged on the electric cylinder assembly and pressed by the gear box body against the secondary box body; a second tapered bearing slidably arranged on the electric cylinder assembly and pressed by the output gear shaft against the inside of the gear box body, and the outer rings of the second tapered bearing and the first tapered bearing are inclined towards each other; a deep groove ball bearing slidably arranged on the electric cylinder assembly and abutted against the output gear shaft, and the outer ring of the deep groove ball bearing is pressed against the gear box body; and a locking nut connected to the electric cylinder assembly and pressing the deep groove ball bearing; it also provides a gear reduction box type electric cylinder. The utility model has the effect of improving the problem in the prior art that the reduction box body bears too much force from the lead screw, resulting in reduced service strength and life;

[0004] The above prior art has unstable telescopic control of the servo motor, cannot perform simultaneous telescopic control of two rods, has insufficient telescopic jacking strength, and the control effect on the servo motor is not intelligent enough to control two lead screws simultaneously. Content of the Utility Model

[0005] The purpose of the utility model is to provide a double-screw servo electric cylinder to solve the problems of unstable telescopic control of the servo motor, inability to perform simultaneous telescopic control of two rods, insufficient telescopic jacking strength, and insufficiently intelligent control effect on the servo motor, which cannot control two lead screws simultaneously as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a double-screw servo electric cylinder, including a telescopic rod, an electric cylinder body, a gear box, and a lead screw. A gear box is provided at the bottom end of the electric cylinder body. Two lead screws are provided inside the electric cylinder body, and telescopic rods that can be controlled by screw drive are provided on both lead screws.

[0007] In a further embodiment, an internal threaded guide cavity is provided inside the telescopic rod. An installation plate is provided at the top end of the telescopic rod, and a piston head is provided at the bottom end of the telescopic rod. The piston head is slidably and guidingly connected to the inner cavity of the electric cylinder body.

[0008] In a further embodiment, two guide holes are provided at the top of the electric cylinder body, and the telescopic rod is guidingly connected to the guide holes.

[0009] In a further embodiment, a driving gear and a first driven gear that are gear-driven with each other are provided inside the gearbox. A servo motor is provided on one side of the top of the gearbox. The output shaft of the servo motor is connected to the driving gear, and the first driven gear is provided at one end of the transmission rod.

[0010] In a further embodiment, a transmission gear is provided at the other end of the transmission rod, and the transmission gear is gear-driven with a second driven gear at the end of the screw rod.

[0011] In a further embodiment, an installation opening is provided on one side of the top of the gearbox, and the motor is provided on the installation opening. Guide holes are provided on both sides of the top of the electric cylinder body, and the telescopic rod is slidably and guidingly connected to the guide holes.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. A double screw rod is provided inside the electric cylinder body of the present utility model. Two telescopic rods are provided on the double screw rod, and installation plates are provided at the ends of the two telescopic rods. The workpiece can be connected through the installation plates at the same time, so as to improve the stability and strength of jacking. Second driven gears are provided at the ends of the double screw rods, and the two second driven gears are both gear-driven with the transmission gears at one end of the transmission rod, so that the double screw rods can be rotated and controlled simultaneously, and the use is convenient and the efficiency is high.

[0014] 2. The present utility model is provided with a gearbox. A driving gear and a first driven gear that can be gear-driven with each other are provided inside the gearbox. The driving gear is automatically controlled by a servo motor and can drive the transmission rod to rotate, so that the electric cylinder can be fully automatically controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a double screw rod servo electric cylinder of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the electric cylinder body of the present utility model;

[0017] Figure 3 is a top view of the electric cylinder body of the present utility model;

[0018] Figure 4 is a schematic structural diagram of the gearbox of the present utility model;

[0019] Figure 5 This is a schematic structural diagram of part A of the present utility model.

[0020] In the figure: 1, mounting plate; 2, telescopic rod; 3, cylinder body of electric cylinder; 4, servo motor; 5, gear box; 6, driving gear; 7, transmission gear; 8, first driven gear; 9, transmission rod; 10, guide hole; 11, mounting opening; 12, second driven gear; 13, screw rod. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Please refer to Figures 1-5 , an embodiment provided by the present utility model: a double-screw servo electric cylinder, including a telescopic rod 2, a cylinder body 3 of the electric cylinder, a gear box 5 and a screw rod 13. A gear box 5 is provided at the bottom end of the cylinder body 3 of the electric cylinder. Two screw rods 13 are provided inside the cylinder body 3 of the electric cylinder, and telescopic rods 2 that can be controlled by screw drive are provided on both screw rods 13; the gear box 5 is used to drive the screw rod 13 inside the cylinder body 3 of the electric cylinder to rotate by the servo motor 4. Through the screw drive control between the screw rod 13 and the threaded hole inside the telescopic rod 2, the telescopic rod 2 is driven to expand and contract inside the cylinder body 3 of the electric cylinder.

[0023] An internal threaded guide cavity is provided inside the telescopic rod 2. A mounting plate 1 is provided at the top end of the telescopic rod 2. A piston head is provided at the bottom end of the telescopic rod 2, and the piston head is slidably and guidingly connected to the inner cavity of the cylinder body 3 of the electric cylinder. The telescopic rod 2 can be controlled to slide and expand and contract inside the cylinder body 3 of the electric cylinder through the piston head; two guide holes 10 are provided at the top of the cylinder body 3 of the electric cylinder, and the telescopic rod 2 is guidingly connected to the guide holes 10. The telescopic rod 2 can be conveniently guided and limited through the guide holes 10.

[0024] Inside the gear box 5, a driving gear 6 and a first driven gear 8 that are mutually gear-driven are provided. A servo motor 4 is provided on one side at the top of the gear box 5. The output shaft of the servo motor 4 is connected to the driving gear 6. The first driven gear 8 is provided at one end of the transmission rod 9. Through the gear drive between the driving gear 6 and the first driven gear 8, the transmission rod 9 is driven to rotate; a transmission gear 7 is provided at the other end of the transmission rod 9. The transmission gear 7 is gear-driven and connected to the second driven gear 12 at the end of the screw rod 13, so that the transmission rod 9 drives the screw rod 13 to rotate through the gear drive between the transmission gear 7 and the second driven gear 12; a mounting opening 11 is provided on one side at the top of the gear box 5, and the servo motor 4 is provided on the mounting opening 11. Guide holes 10 are provided on both sides at the top of the cylinder body 3 of the electric cylinder, and the telescopic rod 2 is slidably and guidingly connected to the guide holes 10. The servo motor 4 can be conveniently installed through the mounting opening 11.

[0025] Working principle: When in use, connect the ends of the two telescopic rods 2 to the device to be controlled through the mounting plate 1. Drive the driving gear 6 to rotate through the servo motor 4, so that the driving gear 6 and the first driven gear 8 are in gear transmission, and drive the transmission rod 9 to rotate. The transmission rod 9 is simultaneously in two-way gear transmission control with the two second driven gears 12 through the transmission gear 7, so as to drive the two screws 13 to rotate. The screws 13 are in screw transmission control with the threaded holes inside the telescopic rods 2, so that the piston heads at the ends of the telescopic rods 2 are slidingly and guidingly connected in the inner cavity of the electric cylinder body 3, and the telescopic rods 2 are guided in the guide holes 10 in the electric cylinder body 3.

[0026] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A twin-screw servo electric cylinder, comprising a telescopic rod (2), an electric cylinder body (3), a gear box (5) and a screw (13), characterized in that: A gear box (5) is provided at the bottom end of the electric cylinder body (3), two screw rods (13) are provided inside the electric cylinder body (3), and telescopic rods (2) which can be controlled by screw rod transmission are provided on the two screw rods (13).

2. A twin-screw servo electric cylinder according to claim 1, characterized in that: An internal threaded guide cavity is provided inside the telescopic rod (2), a mounting plate (1) is provided at the top end of the telescopic rod (2), a piston head is provided at the bottom end of the telescopic rod (2), and the piston head is slidably and guidely connected to the inner cavity of the electric cylinder body (3).

3. The twin-screw servo electric cylinder according to claim 1, characterized in that: Two guide holes (10) are provided on the top of the electric cylinder body (3), and the telescopic rod (2) is connected to the guide holes (10) in a guiding manner.

4. The twin-screw servo electric cylinder according to claim 1, characterized in that: The gear box (5) is provided with a driving gear (6) and a first driven gear (8) which are mutually gear-driven and controlled. A servo motor (4) is provided on one side of the top of the gear box (5). The output shaft of the servo motor (4) is connected to the driving gear (6). The first driven gear (8) is provided at one end of a transmission rod (9).

5. A twin-screw servo electric cylinder according to claim 4, characterized in that: The other end of the transmission rod (9) is provided with a transmission gear (7), and the transmission gear (7) is connected to the second driven gear (12) at the end of the screw rod (13) through gear transmission.

6. The twin-screw servo electric cylinder according to claim 1, characterized in that: A mounting opening (11) is provided on one side of the top of the gear box (5), and the servo motor (4) is arranged on the mounting opening (11). Guide holes (10) are provided on both sides of the top of the electric cylinder body (3), and the telescopic rod (2) is connected to the guide holes (10) in a sliding and guiding manner.

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