Rotary table lifting base

Abstract

The invention discloses a rotary table lifting base device, which belongs to the technical field of lifting devices, is applied to lifting of a rotary table, and is characterized by comprising a bottom frame, a lifting frame, a transmission assembly, a power assembly and the like. The rotary table lifting base device adopts a lead screw transmission mechanism, and rapid and stable lifting of the rotary table is achieved. Due to the structural design of the base device, the practical requirements that the maximum lifting weight is 1700 Kg and the ascending or descending height is 710 mm can be met; when the rotary table rotates in an acceleration or deceleration mode, the maximum acceleration in the X direction, the Y direction and the Z direction can be ignored after the base device is subjected to an impact load for 2 seconds, no resonance mode exists within 0-25 Hz in modal analysis of the base device, resonance of the whole machine can be avoided, the stability of the whole device is improved, and the service life of the whole device is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting devices, and particularly to a turntable lifting base. Background Art

[0002] With the rapid development of industrial automation, precision machining, scientific research experiments, aerospace and other fields, higher requirements are put forward for the height adjustment, angle transformation and precise positioning of equipment. Traditional fixed equipment bases are difficult to meet the requirements for flexibility, precision and efficiency in modern industrial production. As a device integrating lifting and rotating functions, a lifting turntable can effectively solve the above problems. However, most current turntable lifting bases adopt hydraulic drive methods, which have problems such as oil leakage, pollution, and the need to design specific hydraulic oil circuits and oil stations, making the design of the turntable lifting device relatively complex, costly, and with a large shape and volume. Summary of the Invention

[0003] The purpose of the present invention is to provide a turntable lifting base to achieve the rapid and stable lifting of the turntable, and improve the stability and service life of the entire mechanical device through the design of the support frame structure.

[0004] The present invention is implemented by the following technical solutions: A turntable lifting base includes a bottom frame and a lifting frame. It is characterized in that the lifting frame is arranged inside the bottom frame, and the outer side of the lifting frame is connected to the inner side of the bottom frame through a slide rail. The slide rail includes a guide rail arranged on the lifting frame and a slider arranged on the bottom frame, and the guide rail and the slider are in sliding fit.

[0005] Further, the outer shapes of both the bottom frame and the lifting frame are square. A set of ball screw mechanisms are arranged at the four corners of the bottom of the bottom frame, and the four corners of the lifting frame are respectively connected through the four ball screw mechanisms.

[0006] Further, the ball screw mechanism includes a nut pad, a nut and a ball screw. The nut pad and the nut are arranged on the ball screw. By rotating the ball screw, the nut drives the nut pad to perform a lifting movement, and then drives the lifting frame to move up and down.

[0007] Further, the ball screw is fixed on the bottom frame through a support, and a screw support seat is arranged on the support. The ball screw passes through the screw support seat and is rotatably connected to the screw support seat.

[0008] Further, a synchronous pulley is also arranged at the bottom of the ball screw, and the rotation of the synchronous pulley is driven to drive the rotation of the ball screw.

[0009] Further, a driving mechanism is also provided at the bottom of the bottom frame. The driving mechanism includes a servo motor, a servo planetary reducer, and a planetary reducer seat. The output shaft of the servo motor is connected to the servo planetary reducer. The servo planetary reducer is fixed to the bottom frame through the planetary reducer seat. A driving pulley is provided on the output shaft of the servo planetary reducer.

[0010] Further, it also includes a double-sided synchronous belt. The double-sided synchronous belt bypasses the driving pulley and four synchronous pulleys at the same time, and drives the movement of the four ball screw mechanisms through the double-sided synchronous belt at the same time.

[0011] For the turntable lifting base of the present invention, its beneficial effects include: The turntable lifting base device adopts a screw drive mechanism to realize the fast and stable lifting of the turntable. The structural design of its base device can meet the practical requirements of lifting a maximum weight of 1700 Kg and a height of 710 mm for rising or falling. When the turntable rotates with acceleration and deceleration, the maximum acceleration in the XYZ directions of the base device can be ignored after 2 s of impact load. There is no resonance mode within 0 - 25 Hz in the modal analysis of the base device, which can avoid the resonance of the entire machine and improve the stability and service life of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. The drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0013] Figure 1 It is a schematic structural diagram of a turntable lifting base; In the figure, 1 - bottom frame, 2 - lifting frame, 3 - screw cover, 4 - guide rail, 5 - nut pad, 6 - nut, 7 - slider, 8 - support, 9 - ball screw, 10 - screw support seat, 11 - synchronous pulley, 12 - double-sided synchronous belt, 13 - servo planetary reducer, 14 - planetary reducer seat, 15 - servo motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0016] As Figure 1 shown, a turntable lifting base includes a bottom frame 1 and a lifting frame 2. The lifting frame 2 is arranged inside the bottom frame 1, and the outer side of the lifting frame 2 is connected to the inner side of the bottom frame 1 through a slide rail. The slide rail includes a guide rail 4 and a slider 7. The guide rail 4 is arranged on the lifting frame 2, and the slider 7 is arranged on the bottom frame 1. The guide rail 4 and the slider 7 are in sliding fit.

[0017] Both the bottom frame 1 and the lifting frame 2 are square in shape. A set of ball screw mechanisms are arranged at the four corners of the bottom of the bottom frame 1, and the four corners of the lifting frame 2 are respectively connected through the four ball screw mechanisms.

[0018] The ball screw mechanism includes a nut pad 5, a nut 6, and a ball screw 9. The nut pad 5 and the nut 6 are arranged on the ball screw 9. By rotating the ball screw 9, the nut 6 drives the nut pad 5 to perform a lifting motion, thereby driving the lifting frame 2 to move up and down.

[0019] The ball screw 9 is fixed to the bottom frame 1 through a support 8. A screw support 10 is arranged on the support 8. The ball screw 9 passes through the screw support 10 and is rotatably connected to the screw support 10. A synchronous pulley 11 is further arranged at the bottom of the ball screw 9. By driving the synchronous pulley 11 to rotate, the ball screw 9 is driven to rotate.

[0020] A driving mechanism is further arranged at the bottom of the bottom frame 1. The driving mechanism includes a servo motor 15, a servo planetary reducer 13, and a planetary reducer seat 14. The output shaft of the servo motor 15 is connected to the servo planetary reducer 13. The servo planetary reducer 13 is fixed to the bottom frame 1 through the planetary reducer seat 14. A driving pulley is arranged on the output shaft of the servo planetary reducer 13. A double-sided synchronous belt 12 is further included. The double-sided synchronous belt 12 simultaneously bypasses the driving pulley and the four synchronous pulleys 11, and the four ball screw mechanisms are simultaneously driven through the double-sided synchronous belt 12.

[0021] In the above embodiments, the basic principles, main features and advantages of the present invention are described. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, any modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A turntable lifting base, comprising a bottom frame (1) and a lifting frame (2), characterized in that, The lifting frame (2) is arranged inside the bottom frame (1), and the outer side of the lifting frame (2) is connected to the inner side of the bottom frame (1) through slide rails. The slide rails include a guide rail (4) arranged on the lifting frame (2) and a slider (7) arranged on the bottom frame (1), and the guide rail (4) and the slider (7) are in sliding fit.

2. The turntable lifting base according to claim 1, characterized in that, The outer shapes of the bottom frame (1) and the lifting frame (2) are both square. A set of ball screw mechanisms are arranged at the four corners of the bottom of the bottom frame (1), and the four corners of the lifting frame (2) are respectively connected through the four ball screw mechanisms.

3. The lifting base of a turntable according to claim 2, characterized in that, The ball screw mechanism includes a nut pad (5), a nut (6) and a ball screw (9). The nut pad (5) and the nut (6) are arranged on the ball screw (9). By rotating the ball screw (9), the nut (6) drives the nut pad (5) to move up and down, and then drives the lifting frame (2) to move up and down.

4. A turntable lifting base according to claim 3, characterized in that, The ball screw (9) is fixed on the bottom frame (1) through a support (8). A screw support (10) is arranged on the support (8). The ball screw (9) passes through the screw support (10) and is rotatably connected to the screw support (10).

5. A turntable lifting base according to claim 4, characterized in that, A synchronous pulley (11) is further arranged at the bottom of the ball screw (9). By driving the synchronous pulley (11) to rotate, the ball screw (9) is driven to rotate.

6. The lifting base of a turntable according to claim 5, wherein, A driving mechanism is further arranged at the bottom of the bottom frame (1). The driving mechanism includes a servo motor (15), a servo planetary reducer (13) and a planetary reducer seat (14). The output shaft of the servo motor (15) is connected to the servo planetary reducer (13). The servo planetary reducer (13) is fixed on the bottom frame (1) through the planetary reducer seat (14). A driving pulley is arranged on the output shaft of the servo planetary reducer (13).

7. A turntable lifting base according to claim 6, characterized in that, It further includes a double-sided synchronous belt (12). The double-sided synchronous belt (12) bypasses the driving pulley and the four synchronous pulleys (11) at the same time, and drives the four ball screw mechanisms to move through the double-sided synchronous belt (12).

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