CN213738404U

CN213738404U - Large-plane stable lifting mechanism

Info

Publication number: CN213738404U
Application number: CN202022722312.7U
Authority: CN
Inventors: 曹进程
Original assignee: Shenzhen Ranbo Technology Co ltd
Current assignee: Shenzhen Ranbo Technology Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-20
Anticipated expiration: 2030-11-23

Abstract

A large-plane stable lifting mechanism comprises a carrying platform, a bottom plate and a support frame, wherein the carrying platform is fixedly connected to the top surface of the support frame, and the bottom plate is connected with the support frame through a first guide rail pair which is vertically arranged; a motor and a ball screw pair are arranged below the support frame on the lower portion of the bottom plate, an output shaft of the motor is in upward transmission connection with the ball screw pair, a nut of the ball screw pair is connected with the bottom plate through a second guide rail pair which is vertically arranged, the motor is used for driving the ball screw pair to rotate, so that the nut moves up and down along the second guide rail pair, and the nut can be abutted against and not connected with the support frame when moving up and down, so that the support frame is driven to move up and down along the first guide rail pair; the lower part of the bottom plate is respectively provided with a cylinder at the left side and the right side of the motor, the output shaft of the cylinder is upwards connected with the support frame through a floating joint, and the air supply interface of the cylinder is connected with a pressure reducing valve. The utility model discloses use the guide structure of first, the vice substitution current linear bearing of second guide rail and guide arm, simple structure bears the load big.

Description

Large-plane stable lifting mechanism

Technical Field

The utility model relates to a lift microscope carrier design field, concretely relates to elevating system is stabilized in big plane.

Background

In automated production, a stage with a one-dimensional length of 5a is often required to satisfy the lifting action with a stroke a, or the ratio of the required stage length to the stroke is larger. Current product generally adopts multiunit linear bearing and guide arm complex mode on the market, goes up and down in order to stabilize the microscope carrier through setting up guide structure, however, it has following shortcoming: 1. the guide rod is not hard enough, and the linear bearing is easy to crush the guide rod due to structural internal stress generated by assembly errors; 2. the multiple groups of guide rods guide simultaneously, and the over-positioning structure has instability.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a elevating system is stabilized in big plane to solve current lift microscope carrier and adopt multiunit linear bearing and guide arm complex mode, not only poor stability has assembly error moreover, makes technical problem such as linear bearing crush guide arm easily.

In order to achieve the purpose, the utility model provides a large-plane stable lifting mechanism, which comprises a carrying platform, a bottom plate and a supporting frame, wherein the carrying platform is fixedly connected with the top surface of the supporting frame, the supporting frame and the bottom plate are arranged in the front and back directions, and the bottom plate is connected with the supporting frame through a first guide rail pair which is vertically arranged; a motor and a ball screw pair are arranged below the support frame on the lower portion of the bottom plate, an output shaft of the motor is in upward transmission connection with the ball screw pair, a nut of the ball screw pair is connected with the bottom plate through a second guide rail pair which is vertically arranged, the motor is used for driving the ball screw pair to rotate, so that the nut moves up and down along the second guide rail pair, and the nut can be abutted against and not connected with the support frame when moving up and down, so that the support frame is driven to move up and down along the first guide rail pair; the lower part of bottom plate in the left and right sides of motor respectively is equipped with a cylinder, the cylinder with bottom plate fixed connection, the output shaft of cylinder upwards through floating the joint with the support frame is connected, the air feed interface of cylinder is connected with the relief pressure valve.

As a further preferred technical scheme of the utility model, first guide rail is vice to be two sets, two sets first guide rail is vice to be established separately the left and right sides of bottom plate, the left and right sides of support frame respectively with one set the support frame is connected.

As a further preferred technical scheme of the utility model, the convex steel ball is inlayed at the nut top of ball screw pair, the nut passes through the steel ball with the support frame is contradicted, correspond on the support frame be equipped with the gasket that the steel ball was contradicted.

As a further preferred technical scheme of the utility model, the support frame includes the backup pad of vertical setting, the top fixed connection of backup pad has the horizontally roof, the microscope carrier is installed on the roof, the backup pad with contained angle department between the roof is equipped with two piece at least triangle-shaped's deep floor.

As a further preferred technical scheme of the utility model, the bottom of backup pad is equipped with the groove of opening down, the motor with the ball is vice to be located the inslot, the gasket sets up the top in groove.

As a further preferred technical scheme of the utility model, two the cylinder about ball is vice the central axis be symmetrical structure set up in the inslot, the output shaft of cylinder upwards through floating the joint with the top in groove is connected.

As a further preferred technical scheme of the utility model, the motor is servo motor.

The utility model discloses a lifting mechanism is stabilized in big plane through adopting above-mentioned technical scheme for it compares with prior art, can reach following beneficial effect:

1) the first guide rail pair and the second guide rail pair are used for replacing a guide structure of a linear bearing and a guide rod in the prior art, so that the structure is simpler, and the bearing load is larger;

2) when the ball screw pair operates, the lifting nut is in contact with the support frame to drive the support frame and the carrying platform to lift, and the carrying platform is separated from the nut when being passively lifted by external force, and at the moment, the gravity balance is continuously kept by the air cylinder;

3) the utility model discloses structural accuracy is high, stability is good, can not produce elevating system and produce the error phenomenon in the lift in-process left and right sides because of top platform's gravity changes.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of an example provided by a large-plane stable lifting mechanism;

FIG. 2 is a side view of a large flat stable lift mechanism;

FIG. 3 is a detailed view of the structure of the support frame;

fig. 4 is a detailed view of the structure of the base plate.

In the figure: 1. the device comprises a carrier, 2, a bottom plate, 3, a support frame, 31, a support plate, 32, a top plate, 33, a reinforcing rib plate, 4, a pressure reducing valve, 5, a motor, 6, an air cylinder, 7, a first guide rail pair, 8, a second guide rail pair, 9, a ball screw pair, 10 and a nut.

The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for the sake of clarity only, and are not intended to limit the scope of the invention, its relative relationship between the terms and their derivatives, and the scope of the invention should be understood as being limited by the claims.

As shown in fig. 1 to 4, the large-plane stable lifting mechanism comprises a carrier 1, a bottom plate 2 and a support frame 3, wherein the carrier 1 is fixedly connected to the top surface of the support frame 3, the support frame 3 and the bottom plate 2 are arranged in a front-back manner, and the bottom plate 2 is connected with the support frame 3 through a first guide rail pair 7 which is vertically arranged; a motor 5 and a ball screw pair 9 are arranged below the support frame 3 at the lower part of the bottom plate 2, an output shaft of the motor 5 is in upward transmission connection with the ball screw pair 9, a nut 10 of the ball screw pair 9 is connected with the bottom plate 2 through a second guide rail pair 8 which is vertically arranged, the motor 5 is used for driving the ball screw pair 9 to rotate, so that the nut 10 moves up and down along the second guide rail pair 8, and the nut 10 can be abutted against and disconnected with the support frame 3 when moving up and down, so as to drive the support frame 3 to move up and down along the first guide rail pair 7; the lower part of bottom plate 2 in the left and right sides of motor 5 respectively is equipped with a cylinder 6, cylinder 6 with bottom plate 2 fixed connection, the output shaft of cylinder 6 upwards through floating connect with support frame 3 is connected, the air feed interface of cylinder 6 is connected with relief pressure valve 4.

As shown in fig. 4, the number of the first guide rail pairs 7 is two, the two first guide rail pairs 7 are respectively arranged on the left side and the right side of the bottom plate 2, and the left side and the right side of the support frame 3 are respectively connected with one support frame 3, so that the lifting operation is more stable.

Preferably, the top of the nut 10 of the ball screw pair 9 is embedded with a convex steel ball, the nut 10 is abutted against the support frame 3 through the steel ball, the support frame 3 is correspondingly provided with a gasket abutted against the steel ball, the steel ball is in point-surface contact with the gasket, when the motor 5 drives the ball screw pair 9 to apply thrust to the support frame 3 through the nut 10, the thrust is transmitted to the support frame 3 through the top end of the steel ball, so that the force action direction is consistent all the time, and the stable operation of the operation structure is ensured.

Referring to fig. 3, the support frame 3 includes a support plate 31 vertically disposed, a horizontal top plate 32 is fixedly connected to the top of the support plate 31, the carrier 1 is mounted on the top plate 32, and at least two triangular reinforcing rib plates 33 are disposed at an included angle between the support plate 31 and the top plate 32.

Referring to fig. 3 and 4, a groove with a downward opening is formed in the bottom of the support plate 31, the motor 5 and the ball screw assembly 9 are located in the groove, the gasket is arranged at the top of the groove, the two air cylinders 6 are arranged in the groove in a symmetrical structure about the central axis of the ball screw assembly 9, and the output shafts of the air cylinders 6 are connected with the top of the groove upwards through floating joints.

Preferably, the motor 5 is a servo motor 5, which has the advantage of high control precision.

The working principle of the utility model is as follows:

the air pressure introduced into the air cylinder 6 is set by adjusting the pressure reducing valve 4, so that the output pressure of the air cylinder 6 is equivalent to the gravity of the structure of the carrier 1 (the carrier 1 and the support frame 3); the motor 5 rotates to drive the ball screw pair 9 to transmit, so that the steel balls at the top end of the nut 10 are driven to prop against the support frame 3, and the carrying platform 1 is driven to move up and down; the effect of cylinder 6 is balanced microscope carrier 1 gravity, and when microscope carrier 1 received external force to make microscope carrier 1 upward movement and steel ball separate moreover for the effect of the balanced microscope carrier 1 structure gravity of cylinder 6 still exists (for example outside machine need adsorb microscope carrier 1 product, can drive microscope carrier 1 and rise, and support frame 3 separates with nut 10 when this, but both sides cylinder 6 exists, so the effect of balanced microscope carrier 1 gravity still exists).

Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.

Claims

1. A large-plane stable lifting mechanism is characterized by comprising a carrying platform, a bottom plate and a supporting frame, wherein the carrying platform is fixedly connected to the top surface of the supporting frame, the supporting frame and the bottom plate are arranged in front and at the back, and the bottom plate is connected with the supporting frame through a first guide rail pair which is vertically arranged; a motor and a ball screw pair are arranged below the support frame on the lower portion of the bottom plate, an output shaft of the motor is in upward transmission connection with the ball screw pair, a nut of the ball screw pair is connected with the bottom plate through a second guide rail pair which is vertically arranged, the motor is used for driving the ball screw pair to rotate, so that the nut moves up and down along the second guide rail pair, and the nut can be abutted against and not connected with the support frame when moving up and down, so that the support frame is driven to move up and down along the first guide rail pair; the lower part of bottom plate in the left and right sides of motor respectively is equipped with a cylinder, the cylinder with bottom plate fixed connection, the output shaft of cylinder upwards through floating the joint with the support frame is connected, the air feed interface of cylinder is connected with the relief pressure valve.

2. The stable lifting mechanism for large planes according to claim 1, wherein the number of the first guide rail pairs is two, the two first guide rail pairs are respectively arranged at the left side and the right side of the bottom plate, and the left side and the right side of the supporting frame are respectively connected with one supporting frame.

3. The stable lifting mechanism in large plane according to claim 1, wherein a convex steel ball is embedded in the top of the nut of the ball screw pair, the nut is abutted against the support frame through the steel ball, and the support frame is correspondingly provided with a gasket abutted against the steel ball.

4. The large-plane stable lifting mechanism according to claim 3, wherein the supporting frame comprises a vertically arranged supporting plate, a horizontal top plate is fixedly connected to the top of the supporting plate, the carrying platform is mounted on the top plate, and at least two triangular reinforcing rib plates are arranged at an included angle between the supporting plate and the top plate.

5. The large flat surface stabilized lifting mechanism according to claim 4, wherein the bottom of the supporting plate is provided with a groove with a downward opening, the motor and the ball screw pair are located in the groove, and the gasket is arranged at the top of the groove.

6. The large flat stable lift mechanism of claim 5 wherein two of said air cylinders are disposed within said groove in a symmetrical configuration about a central axis of said ball screw assembly, an output shaft of said air cylinders being connected upwardly to a top of said groove by a floating joint.

7. The large flat surface stabilized lift mechanism of any one of claims 1 to 6, wherein said motor is a servo motor.