CN220382873U - Three-stage parallel type electric cylinder structure for load - Google Patents

Abstract

The utility model relates to the technical field of electric cylinder structures, and particularly discloses a three-stage parallel type electric cylinder structure for loads, which comprises a motor, an outer cylinder body, a threaded sleeve, a threaded inner rod, a second support plate and a third support plate, wherein the top of the outer cylinder body is provided with a first support plate, the motor is in sliding connection with the inner wall of the outer cylinder body, the threaded sleeve is in threaded connection with the first support plate, one end of the threaded sleeve is fixedly connected with an output shaft of the motor, the other end of the threaded sleeve extends out of the first support plate to be rotationally connected with the second support plate, the threaded inner rod is in threaded connection with the second support plate, one end of the threaded inner rod is positioned in the threaded sleeve, and the other end of the threaded inner rod extends out of the second support plate to be rotationally connected with the third support plate. The utility model adopts a parallel three-stage telescopic structure, can have nearly three times of electric cylinder travel, and in addition, the motor is arranged in a straight line, so that the space volume occupied by the electric cylinder can be reduced, the utility model is suitable for a narrow working condition, and meanwhile, the transmission efficiency can be improved.

Description

Three-stage parallel type electric cylinder structure for load

Technical Field

The utility model relates to the technical field of electric cylinder structures, in particular to a three-stage parallel type electric cylinder structure for loads.

Background

In the field of industrial equipment manufacturing, the working stroke of a traditional monopole electric cylinder is limited by the size of the traditional monopole electric cylinder, and occasions where the working stroke needs to be changed continuously often exist in actual working conditions, but the traditional electric cylinder cannot meet the working conditions; meanwhile, the whole structure of the existing electric cylinder is large in size, and an offset mounting mode is adopted, so that the electric cylinder is inconvenient to mount at a position with a narrow space, and the application range is small, for example, the electric cylinder is disclosed in an utility model patent with an issued publication number of CN219304619U, CN 212969331U.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a three-stage parallel electric cylinder structure for load, solves the problem that the traditional electric cylinder cannot stretch to meet various working conditions due to the influence of size limitation, and particularly provides an electric cylinder capable of having nearly three times of working stroke under the condition of fixed axial size, the space volume occupied by the electric cylinder is reduced, and the internal threaded sleeve and the threaded inner rod realize synchronous axial movement by adopting a parallel structure.

The technical scheme includes motor and outer barrel, the top fixed mounting of outer barrel has first backup pad, the motor passes through sliding component and the inner wall sliding connection of outer barrel, and the slip direction is along the axis direction of outer barrel, still includes screw thread sleeve, screw thread internal rod, second backup pad and third backup pad, be equipped with first screw hole in the first backup pad, be equipped with the second screw hole in the second backup pad, screw thread sleeve installs in first screw hole, and with first backup pad threaded connection, screw thread sleeve's one end and the output shaft fixed connection of motor, the other end stretches out first backup pad and rotates to be connected with the second backup pad, screw thread internal rod installs in the second screw hole, and with second backup pad threaded connection, the one end of screw thread internal rod is located screw thread sleeve, and the other end stretches out second backup pad and rotates to be connected with the third backup pad, when the motor rotates, the second backup pad can be kept away from or be close to first backup pad removes, just the third backup pad can be kept away from or is close to in step the second backup pad removes.

Further, a tertiary parallel electric cylinder structure for load still includes medium plate polished rod and roof polished rod, all be equipped with two sets of through-holes in first backup pad and the second backup pad, two sets of through-holes set up respectively in the different directions of first screw hole and second screw hole, two the one end of medium plate polished rod and a set of through-hole fixed connection of second backup pad, the other end embolias in a set of through-hole of first backup pad to through linear slide bearing and first backup pad sliding connection, two the one end and the third backup pad fixed connection of roof polished rod, the other end embolias in another set of through-hole of second backup pad and in another set of through-hole of first backup pad in proper order, and through linear slide bearing and second backup pad sliding connection.

Further, the bottom of medium plate polished rod and roof polished rod all is equipped with the stopper, the size of stopper is greater than linear sliding bearing's size and is less than the size of through-hole.

Further, ball screw bearings are arranged between the threaded sleeve and the second support plate and between the threaded inner rod and the third support plate.

Further, the sliding assembly comprises a guide rail, sliding blocks and a U-shaped connecting plate, wherein the two guide rails are symmetrically arranged on the inner wall of the outer cylinder body through nuts, the sliding blocks are slidably arranged on the guide rail, two ends of the U-shaped connecting plate are fixedly connected with the two sliding blocks respectively, and the bottom of the U-shaped connecting plate is fixedly connected with the motor.

Furthermore, the U-shaped connecting plate and the sliding block are fixed with the motor through screws.

The beneficial effects are that:

1. according to the utility model, through the arrangement of the motor, the outer cylinder body, the first support plate, the threaded sleeve, the threaded inner rod, the second support plate and the third support plate, the electric cylinder stroke of nearly three times can be possessed, the use of different working conditions is met, and the parallel structure is adopted, so that the internal threaded sleeve and the threaded inner rod realize synchronous axial movement, the time for completing one-time reciprocating motion of the multistage electric cylinder is reduced, the electric cylinder is very suitable for the industry for rapidly completing lifting work, in addition, the output shaft of the motor is directly connected with the threaded sleeve, the space volume occupied by the electric cylinder is reduced relative to offset installation, the electric cylinder is suitable for narrow working conditions, and meanwhile, the transmission efficiency is improved.

2. According to the utility model, through the arrangement of the middle plate polish rod, the top plate polish rod, the plurality of groups of through holes and the linear sliding bearings, the movement of the second support plate and the third support plate can be guided, and the linear movement of the second support plate and the third support plate is ensured; through the setting of stopper, can restrict the ascending position of second backup pad and third backup pad, ensure safety, combine the restriction to the stopper size, can be when the shrink, make things convenient for the roof polished rod to freely pass the through-hole, ensure that the screw thread inner rod can retract in the screw thread sleeve completely.

3. According to the utility model, through the arrangement of the ball screw bearing, friction resistance can be reduced, and rotation is smoother.

4. According to the utility model, through the arrangement of the guide rail, the sliding block and the U-shaped connecting plate, the linear sliding of the motor can be ensured, and the motor and the sliding assembly can be conveniently disassembled and assembled by combining the arrangement of the screws.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic diagram showing the structure of the structure at B in FIG. 2;

fig. 4 is a front view of the overall structure of the present utility model.

Reference numerals illustrate:

1. a motor; 2. an outer cylinder; 3. a guide rail; 4. a threaded sleeve; 5. a threaded inner rod; 6. a nut; 7. a first support plate; 8. a second support plate; 9. a third support plate; 10. a ball screw bearing; 11. a top plate polish rod; 12. a through hole; 13. a linear sliding bearing; 14. a U-shaped connecting plate; 15. a slide block; 16. a middle plate polish rod; 17. and a limiting block.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The utility model provides a three-stage parallel electric cylinder structure for load, as shown in figures 1 to 4, the three-stage parallel electric cylinder structure comprises a motor 1 and an outer cylinder body 2, a first supporting plate 7 is fixedly arranged at the top of the outer cylinder body 2, the motor 1 is in sliding connection with the inner wall of the outer cylinder body 2 through a sliding component, and the sliding direction is along the axis direction of the outer cylinder body 2, wherein the sliding component comprises a guide rail 3, a sliding block 15 and a U-shaped connecting plate 14, the two guide rails 3 are symmetrically arranged on the inner wall of the outer cylinder body 2 through nuts 6, the sliding block 15 is slidably arranged on the guide rail 3, two ends of the U-shaped connecting plate 14 are fixedly connected with the two sliding blocks 15 through screws, the bottom of the U-shaped connecting plate 14 is fixedly connected with the motor 1 through screws, the linear sliding of the motor 1 in the outer cylinder body 2 is ensured, and the motor 1, the U-shaped connecting plate 14 and the sliding block 15 are convenient to assemble and disassemble, when the motor 1 rotates, the whole motor 1 and the sliding component can reciprocate linearly along the guide rail 3, the threaded sleeve 4, the threaded inner rod 5, a second supporting plate 8 and a third supporting plate 9 are arranged on the first supporting plate 7, the threaded sleeve 8, the second supporting plate 8 is rotatably arranged on the first supporting plate 7, the second supporting plate 8 is rotatably connected with the second supporting plate 8, the second supporting plate 8 is rotatably connected with the threaded sleeve 8, the second supporting plate 8, the threaded sleeve 8 is rotatably arranged on the second supporting sleeve 4, the second supporting 4 and the threaded sleeve 8, the second threaded sleeve 8 and the second threaded sleeve 4 and the threaded sleeve 8 and the threaded 4 and the threaded sleeve 5 and the one end 5 can be rotatably and the one can be rotatably and be fixedly connected with the threaded, the second support plate 8 moves away from or near the first support plate 7, and the third support plate 9 moves away from or near the second support plate 8 synchronously, so that parallel functions are realized, the threaded sleeve 4 is located inside the outer cylinder 2 in a structure shrinkage state, the threaded inner rod 5 is located inside the threaded sleeve 4, the threaded sleeve 4 extends out of the outer cylinder 2 in a structure elongation state, and the threaded inner rod 5 extends out of the threaded sleeve 4.

In this embodiment, through outer barrel 2, motor 1, first backup pad 7, screw thread sleeve 4, screw thread interior pole 5, second backup pad 8 and the setting of third backup pad 9, can possess nearly triple electric cylinder stroke, satisfy the use of different operating modes, and adopt the parallel structure, make inside screw thread sleeve 4 realize synchronous axial displacement with screw thread interior pole 5, the time that multistage electric cylinder accomplished reciprocating motion has been reduced, be particularly adapted to the trade of accomplishing the lift work fast, in addition the output shaft of motor 1 is directly connected with screw thread sleeve 4, the space volume that electric cylinder occupy has been reduced for offset installation, be applicable to narrow operating mode, simultaneously improved transmission efficiency.

In the utility model, as shown in fig. 2 and 4, the three-stage parallel electric cylinder structure for load further comprises a middle plate polish rod 16 and a top plate polish rod 11, wherein two groups of through holes 12 are respectively arranged on the first support plate 7 and the second support plate 8, the two groups of through holes 12 are respectively arranged in different directions of the first threaded hole and the second threaded hole, specifically, the two groups of through holes 12 on the first support plate 7 are respectively positioned in the front, back, left and right directions of the first threaded hole, the two groups of through holes 12 on the second support plate 8 are respectively positioned in the front, back, left and right directions of the second threaded hole, and the central axes of the corresponding through holes 12 on the first support plate 7 and the second support plate 8 are positioned on the same straight line, one ends of the two middle plate polished rods 16 are fixedly connected with one group of through holes 12 of the second support plate 8, specifically, the two middle plate polished rods 16 are welded and connected with the through holes 12 in the front-back direction, the other ends of the two middle plate polished rods are sleeved in one group of through holes 12 of the first support plate 7, specifically, the through holes 12 in the front-back direction of the first support plate 7 and are slidably connected with the first support plate 7 through linear sliding bearings 13, one ends of the two top plate polished rods 11 are fixedly connected with the third support plate 9, and the other ends of the two top plate polished rods are sequentially sleeved in the other group of through holes 12 of the second support plate 8 and the other group of through holes 12 of the first support plate 7, specifically, the through holes 12 in the left-right direction of the second support plate 8 and the first support plate 7 and are slidably connected with the second support plate 8 through the linear sliding bearings 13; the bottom ends of the middle plate polish rod 16 and the top plate polish rod 11 are respectively provided with a limiting block 17, and the size of the limiting block 17 is larger than that of the linear sliding bearing 13 and smaller than that of the through hole 12, namely the limiting block 17 can freely pass through the through hole 12 but cannot pass through the linear sliding bearing 13.

In the present embodiment, the movement of the second support plate 8 and the third support plate 9 can be guided by the arrangement of the middle plate polish rod 16, the top plate polish rod 11, the plurality of groups of through holes 12 and the linear slide bearings 13, so that the linear movement of the second support plate 8 and the third support plate 9 can be ensured; through the setting of stopper 17, can restrict the ascending position of second backup pad 8 and third backup pad 9, ensure safety, combine the restriction to stopper 17 size, can make things convenient for roof polished rod 11 free to pass through hole 12 on the first backup pad 7 under the structure shrink state, ensure that screw thread inner rod 5 can retract completely in the screw thread sleeve 4.

In the present utility model, as shown in fig. 2 and 4, a ball screw bearing 10 is installed between the threaded sleeve 4 and the second support plate 8, and between the threaded inner rod 5 and the third support plate 9.

In the present embodiment, the arrangement of the ball screw bearing 10 can reduce frictional resistance and make the rotation smoother.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (6)

1. The utility model provides a tertiary parallel electric cylinder structure for load, includes motor (1) and urceolus body (2), the top fixed mounting of urceolus body (2) has first backup pad (7), motor (1) are through sliding component and the inner wall sliding connection of urceolus body (2), and the slip direction is along the axis direction of urceolus body (2), a serial communication port, still include screw thread sleeve (4), screw thread interior pole (5), second backup pad (8) and third backup pad (9), be equipped with first screw hole on first backup pad (7), be equipped with the second screw hole on second backup pad (8), screw thread sleeve (4) are installed in first screw hole, and with first backup pad (7) threaded connection, the one end of screw thread sleeve (4) and the output shaft fixed connection of motor (1), the other end stretches out first backup pad (7) and rotates and is connected with second backup pad (8), screw thread interior pole (5) are installed in second screw thread interior pole (5) and are connected with second backup pad (8), screw thread interior pole (4) are located second backup pad (8) and the other end that the screw thread is located when second backup pad (8) are stretched out, second backup pad (8) rotate and can be kept away from when moving, and the third support plate (9) is moved away from or towards the second support plate (8) simultaneously.

2. The three-stage parallel electric cylinder structure for load according to claim 1, further comprising a middle plate polish rod (16) and a top plate polish rod (11), wherein two groups of through holes (12) are respectively formed in the first support plate (7) and the second support plate (8), the two groups of through holes (12) are respectively formed in different directions of the first threaded hole and the second threaded hole, one end of the middle plate polish rod (16) is fixedly connected with one group of through holes (12) of the second support plate (8), the other end of the middle plate polish rod is sleeved in one group of through holes (12) of the first support plate (7) and is in sliding connection with the first support plate (7) through a linear sliding bearing (13), one end of the two top plate polish rods (11) is fixedly connected with the third support plate (9), and the other end of the top plate polish rod (11) is sleeved in the other group of through holes (12) of the second support plate (8) and the other group of through holes (12) of the first support plate (7) in sequence and is in sliding connection with the second support plate (8) through the linear sliding bearing (13).

3. The three-stage parallel electric cylinder structure for loads according to claim 2, wherein limiting blocks (17) are arranged at the bottom ends of the middle plate polish rod (16) and the top plate polish rod (11), and the limiting blocks (17) are larger than the linear sliding bearing (13) and smaller than the through holes (12).

4. A three-stage parallel electric cylinder structure for loads according to any one of claims 1 to 3, characterized in that ball screw bearings (10) are mounted between the threaded sleeve (4) and the second support plate (8) and between the threaded inner rod (5) and the third support plate (9).

5. A three-stage parallel electric cylinder structure for loads according to any one of claims 1 to 3, characterized in that the sliding assembly comprises a guide rail (3), sliding blocks (15) and a U-shaped connecting plate (14), wherein the two guide rails (3) are symmetrically arranged on the inner wall of the outer cylinder body (2) through nuts (6), the sliding blocks (15) are slidably arranged on the guide rail (3), two ends of the U-shaped connecting plate (14) are fixedly connected with the two sliding blocks (15) respectively, and the bottom of the U-shaped connecting plate (14) is fixedly connected with the motor (1).

6. The three-stage parallel electric cylinder structure for loads according to claim 5, characterized in that the U-shaped connecting plate (14) and the sliding block (15) and the U-shaped connecting plate (14) and the motor (1) are fixed by screws.