CN218243230U

CN218243230U - Integrated integrated electric cylinder

Info

Publication number: CN218243230U
Application number: CN202222206492.2U
Authority: CN
Inventors: 宋杰; 李雪
Original assignee: Shanghai Ruikui Machinery Equipment Co ltd
Current assignee: Shanghai Ruikui Machinery Equipment Co ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-01-06
Anticipated expiration: 2032-08-22

Abstract

The invention discloses an integrated electric cylinder which comprises a shell, wherein a hollow encoder which is arranged in an annular mode is arranged inside the shell, a speed reduction cavity is arranged inside the bottom end of the shell, a motor groove which is arranged in an annular mode is formed in the side wall of the speed reduction cavity, a hollow servo motor which is arranged in an annular mode is fixedly connected inside the motor groove, the hollow servo motor is electrically connected with the hollow encoder, and a connecting ring is fixedly connected with an inner ring rotor end of the hollow servo motor. The invention has reasonable design and ingenious conception, can lead the electric cylinder to be in integrated design by adopting the annular hollow encoder and the hollow servo motor to be arranged inside the shell, reduces the volume and the weight of the electric cylinder, and leads the thrust of the telescopic piston rod to be larger by matching the first gear, the second gear, the third gear and the fourth gear.

Description

Integrated integrated electric cylinder

Technical Field

The invention relates to the technical field of electric cylinders, in particular to an integrated electric cylinder.

Background

The electric cylinder is a modularized product which integrates a servo motor and a lead screw, converts the rotary motion of the servo motor into linear motion, and simultaneously converts the best advantages of the servo motor, namely accurate rotating speed control, accurate revolution control and accurate torque control into accurate speed control, accurate position control and accurate thrust control; realizing a brand new revolutionary product of a high-precision linear motion series.

However, in the prior art, the whole volume and the mass of the existing electric cylinder are large, which not only occupies a large space, but also is inconvenient to carry and move.

Disclosure of Invention

The present invention provides an integrated electric cylinder to solve the problems set forth in the background art described above.

In order to achieve the purpose, the invention adopts the following technical scheme:

integrated integral type electric cylinder, which comprises a housin, the inside of casing is equipped with the hollow encoder that is the annular setting, the inside speed reduction cavity that is equipped with in bottom of casing, set up the motor groove that is the annular and establish on the lateral wall of speed reduction cavity, motor inslot fixedly connected with is the hollow servo motor that the annular set up, the electricity is connected between hollow servo motor and the hollow encoder, hollow servo motor's inner circle active cell fixedly connected with clamping ring, the clamping ring is connected with ball screw through reduction gear device, flexible groove has been seted up on the lateral wall of casing, ball screw rotates to be connected at flexible inslot, ball screw is last to be connected with telescopic piston rod through telescoping device, telescopic piston rod's one end is connected with the joint through protector.

As a further improvement scheme of the technical scheme: the reduction gear device comprises a partition plate and a fourth gear, the partition plate is fixedly connected to the side wall of the reduction cavity, a hollow groove which runs through the reduction cavity is formed in the central side wall of the fourth gear, the fourth gear is fixedly connected to the side wall of the connecting ring, a plurality of first gears and every gear are meshed and connected to the side wall of the fourth gear, a rotating shaft is fixedly connected to the side wall of the first gears and every gear is connected to the partition plate in a rotating mode, a second gear is fixedly connected to one end of the rotating shaft and multiple gears are meshed and connected to a third gear, and the bottom end of the ball screw penetrates through the bottom side wall of the telescopic groove and the partition plate side wall and is fixedly connected to the side wall of the third gear in sequence.

As a further improvement scheme of the technical scheme: the number of the first gears is three.

As a further improvement scheme of the technical scheme: the radius of the third gear is larger than that of the second gear.

As a further improvement scheme of the technical scheme: the first gear, the second gear, the third gear and the fourth gear are all made of wear-resistant steel.

As a further improvement scheme of the technical scheme: the telescoping device includes ball screw nut, ball screw nut rotates to be connected on ball screw, two gag lever posts of fixedly connected with on the bottom lateral wall of flexible groove, every the gag lever post all runs through ball screw nut's lateral wall, ball screw nut sliding connection is on the gag lever post, ball screw nut's lateral wall fixed connection is on the inside wall that telescopic piston rod is hollow tube-shape and sets up.

As a further improvement scheme of the technical scheme: and a Teflon coating is arranged on the surface of the ball screw.

As a further improvement scheme of the technical scheme: and an anti-oxidation coating is sprayed on the side wall of the surface of the shell.

As a further improvement scheme of the technical scheme: the protection device comprises a plurality of triangular blocks, the triangular blocks are fixedly connected to the side walls of the joint and the telescopic piston rod respectively, the inclined side wall of each triangular block on the side wall of the joint is abutted to the inclined side wall of each triangular block on the telescopic piston rod, a connecting hole is formed in the inclined side wall of each triangular block, a disc groove is formed in the bottom end of each connecting hole, the connecting holes in the inclined side walls of every two triangular blocks are aligned with each other, cast iron columns are arranged in the two connecting holes aligned with each other, discs are fixedly connected to the two ends of each cast iron column, and each disc is located in the disc groove.

Compared with the prior art, the invention has the beneficial effects that:

the inner ring of the hollow servo motor can be controlled to rotate forwards and backwards through the hollow encoder, the inner ring rotor end of the hollow servo motor drives the fourth gear to rotate again, the fourth gear can drive the first gears on the side wall to rotate simultaneously, each first gear drives the second gear to rotate through the rotating shaft, the second gears can drive the third gear to rotate through meshing action, the radius of the third gear is larger than that of the second gear, so that the third gear, the second gear, the third gear and the fourth gear rotate, finally, the third gear can reduce the rotating angular speed of the hollow servo motor, the rotating torque is increased, the third gear drives the ball screw to rotate again, the ball screw nut can carry out front and back expansion on the ball screw, the ball screw nut can drive the telescopic piston rod to expand and retract forwards, the device is reasonable in design and ingenious in conception, the hollow encoder and the hollow servo motor are installed inside the shell through the adoption of the ring, the electric cylinder is in an integrated design, the volume and the weight of the electric cylinder are reduced, the piston rod can be moved forwards and backwards and forwards and backwards move through the thrust of the first gear, the third gear and the fourth gear, the hollow servo motor can be separated from the piston rod, and the piston rod can be protected when the piston rod is not damaged, and the piston rod is not damaged.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic sectional front view of an integrated electric cylinder according to the present invention;

FIG. 2 is a schematic perspective view of an integrated electric cylinder according to the present invention;

FIG. 3 is a schematic perspective view of a plurality of first gears and fourth gears in the integrated electric cylinder according to the present invention;

FIG. 4 is a schematic view of a plurality of second gears and third gears in the integrated electric cylinder according to the present invention;

FIG. 5 is a schematic view of a connection structure of a plurality of first gears and fourth gears in the integrated electric cylinder according to the present invention;

FIG. 6 is a schematic view of a portion A of FIG. 1;

fig. 7 is a schematic view of a connection structure of a cast iron column and a triangular block in the integrated electric cylinder.

In the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a shell 1, a hollow encoder 2, a hollow servo motor 3, a first gear 4, a partition plate 5, a second gear 6, a third gear 7, a rotating shaft 8, a speed reduction cavity 9, a ball screw nut 10, a motor groove 11, a limiting rod 12, a ball screw 13, a telescopic piston rod 14, a joint 15, a telescopic groove 16, a fourth gear 17, a connecting ring 18, a triangular block 19, a cast iron column 20, a disc 21, a disc groove 22 and a connecting hole 23.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 7, in the embodiment of the present invention, an integrated electric cylinder includes a casing 1, a hollow encoder 2 disposed annularly is disposed inside the casing 1, a speed reduction cavity 9 is disposed inside a bottom end of the casing 1, a motor groove 11 disposed annularly is disposed on a side wall of the speed reduction cavity 9, a hollow servo motor 3 disposed annularly is fixedly connected inside the motor groove 11, the hollow servo motor 3 is electrically connected to the hollow encoder 2, a connecting ring 18 is fixedly connected to an inner ring rotor end of the hollow servo motor 3, the connecting ring is connected to a ball screw 13 through a speed reduction gear device, an expansion groove 16 is disposed on a side wall of the casing 1, the ball screw 13 is rotatably connected to the expansion groove 16, the ball screw 13 is connected to an expansion piston rod 14 through an expansion device, and one end of the expansion piston rod 14 is connected to a joint 15 through a protection device.

Concretely, reduction gear includes baffle 5 and fourth gear 17, baffle 5 fixed connection is on the lateral wall of speed reduction cavity 9, set up the hollow groove that runs through the setting on the central lateral wall of fourth gear 17, fourth gear 17 fixed connection is on the lateral wall of connecting ring 18, the meshing is connected with a plurality of first gears 4 on the lateral wall of fourth gear 17, a plurality of first gears 4's quantity is three, fixedly connected with axis of rotation 8 on every first gear 4's the lateral wall, every axis of rotation 8 rotates and connects on baffle 5, the one end fixedly connected with second gear 6 of every axis of rotation 8, the meshing is connected with third gear 7 between a plurality of second gears 6, the bottom of ball screw 13 runs through the bottom lateral wall and the 5 lateral walls of baffle of flexible groove 16 and fixed connection on the lateral wall of third gear 7 in proper order, the radius of third gear 7 is greater than the radius of second gear 6.

Specifically, the first gear 4, the second gear 6, the third gear 7 and the fourth gear 17 are all made of wear-resistant steel.

Specifically, the telescoping device includes ball screw nut 10, ball screw nut 10 rotates and connects on ball screw 13, two gag lever posts 12 of fixedly connected with on the bottom lateral wall of flexible groove 16, every gag lever post 12 all runs through ball screw nut 10's lateral wall, ball screw nut 10 sliding connection is on gag lever post 12, ball screw nut 10's lateral wall fixed connection is on telescopic piston rod 14 is the inside wall of hollow tube-shape setting, third gear 7 can drive ball screw 13 rotatory, make ball screw nut 10 can carry out the back-and-forth movement on ball screw 13, and then ball screw nut 10 can drive telescopic piston rod 14 and stretch out and draw back around.

Specifically, the surface of the ball screw 13 is provided with a teflon coating, and the teflon coating can reduce the surface friction of the ball screw 13.

Specifically, the side wall of the surface of the shell 1 is sprayed with an anti-oxidation coating, and the anti-oxidation coating can improve the anti-oxidation performance of the shell.

Specifically, the protection device comprises a plurality of triangular blocks 19, the triangular blocks 19 are respectively and fixedly connected to the side walls of the joint 15 and the telescopic piston rod 14, the inclined side wall of each triangular block 19 on the side wall of the joint 15 is abutted to the inclined side wall of each triangular block 19 on the telescopic piston rod 14, a connecting hole 23 is formed in the inclined side wall of each triangular block 19, a disc groove 22 is formed in the bottom end of each connecting hole 23, the connecting holes 23 on the inclined side walls of every two triangular blocks 19 are aligned with each other, a cast iron column 20 is arranged in each two connecting holes 23 aligned with each other, two ends of each cast iron column 20 are fixedly connected with discs 21, each disc 21 is located in the disc groove 22, and when the joint 15 is subjected to an acting force, the acting force is transmitted to the cast iron column 20 through the triangular blocks 19 abutted to the inclined side walls, because the cast iron column 20 has large brittleness, the acting force of the two triangular blocks 19 on the cast iron column 20 exceeds the bearing force limit of the cast iron column 20, so that breakage is generated, when the pulling force or pushing force applied to the joint 15 is equal to or close to the maximum torsion generated by the hollow servo motor 3, and the piston rod 14 is prevented from being damaged, and the telescopic piston rod 15 is prevented from being broken.

The working principle of the invention is as follows:

the inner ring of the hollow servo motor 3 can be controlled to rotate forwards and backwards through the hollow encoder 2, the inner ring rotor end of the hollow servo motor 3 drives the fourth gear 17 to rotate, the fourth gear 17 can drive the first gears 4 on the side wall to rotate simultaneously, each first gear 4 drives the second gear 6 to rotate through the rotating shaft 8, the second gears 6 can drive the third gear 7 to rotate through meshing action, because the radius of the third gear 7 is larger than that of the second gear 6, the third gear 4, the second gear 6, the third gear 7 and the fourth gear 17 rotate, finally the third gear 7 can reduce the rotating angular speed of the hollow servo motor 3, the rotating torque is increased, the third gear 7 drives the ball screw 13 to rotate, the ball screw nut 10 can move forwards and backwards on the ball screw 13, the ball screw nut 10 can drive the telescopic piston rod 14 to stretch forwards and backwards, the annular hollow encoder 2 and the hollow servo motor 3 are arranged inside the shell 1, the electric cylinder can be designed in an integrated mode, and the integrated size and weight of the electric cylinder are reduced.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. Integrated integral type electric cylinder, including casing (1), its characterized in that, the inside of casing (1) is equipped with hollow encoder (2) that are the annular setting, the inside speed reduction cavity (9) that is equipped with in bottom of casing (1), set up on the lateral wall of speed reduction cavity (9) and be motor groove (11) that the annular was established, fixedly connected with is hollow servo motor (3) that the annular set up in motor groove (11), the electricity is connected between hollow servo motor (3) and hollow encoder (2), the inner circle active cell fixedly connected with clamping ring (18) of hollow servo motor (3), the clamping ring is connected with ball screw (13) through reduction gear device, flexible groove (16) have been seted up on the lateral wall of casing (1), ball screw (13) rotate to be connected in flexible groove (16), be connected with telescopic piston rod (14) through the telescoping device on ball screw (13), the one end of telescopic piston rod (14) is connected with joint (15) through the protector.

2. The integrated electric cylinder according to claim 1, wherein the reduction gear device comprises a partition plate (5) and a fourth gear (17), the partition plate (5) is fixedly connected to the side wall of the reduction cavity (9), a hollow groove which is arranged in a penetrating manner is formed in the central side wall of the fourth gear (17), the fourth gear (17) is fixedly connected to the side wall of the connecting ring (18), a plurality of first gears (4) are meshed and connected to the side wall of the fourth gear (17), a rotating shaft (8) is fixedly connected to the side wall of each first gear (4), each rotating shaft (8) is rotatably connected to the partition plate (5), a second gear (6) is fixedly connected to one end of each rotating shaft (8), a third gear (7) is meshed and connected between the second gears (6), and the bottom end of the ball screw (13) sequentially penetrates through the side wall of the bottom of the telescopic groove (16) and the side wall of the partition plate (5) and is fixedly connected to the side wall of the third gear (7).

3. The integrated one-piece electric cylinder according to claim 2, characterized in that the number of the first gears (4) is three.

4. The integrated one-piece electric cylinder according to claim 2, characterized in that the radius of the third gear wheel (7) is larger than the radius of the second gear wheel (6).

5. The integrated electric cylinder according to claim 2, characterized in that the first gear (4), the second gear (6), the third gear (7) and the fourth gear (17) are made of wear-resistant steel.

6. The integrated electric cylinder as claimed in claim 1, wherein the telescopic device comprises a ball screw nut (10), the ball screw nut (10) is rotatably connected to a ball screw (13), two limiting rods (12) are fixedly connected to the bottom side wall of the telescopic groove (16), each limiting rod (12) penetrates through the side wall of the ball screw nut (10), the ball screw nut (10) is slidably connected to the limiting rods (12), and the side walls of the ball screw nut (10) are fixedly connected to the inner side wall of the telescopic piston rod (14) in a hollow cylindrical shape.

7. The integrated one-piece electric cylinder according to claim 1, characterized in that the surface of the ball screw (13) is provided with a teflon coating.

8. The integrated and integrated electric cylinder as claimed in claim 1, wherein the side wall of the surface of the shell (1) is coated with an oxidation-proof coating.

9. The integrated and integrated electric cylinder as claimed in claim 1, wherein the protection device comprises a plurality of triangular blocks (19), the triangular blocks (19) are respectively and fixedly connected to the side walls of the joint (15) and the telescopic piston rod (14), the oblique side wall of each triangular block (19) on the side wall of the joint (15) is mutually abutted to the oblique side wall of each triangular block (19) on the telescopic piston rod (14), a connecting hole (23) is formed in the oblique side wall of each triangular block (19), a disc groove (22) is formed in the bottom end of each connecting hole (23), the connecting holes (23) on the oblique side walls of every two triangular blocks (19) are mutually aligned, a cast iron column (20) is arranged in each two mutually aligned connecting holes (23), discs (21) are fixedly connected to both ends of each cast iron column (20), and each disc (21) is located in the disc groove (22).