Rotary lifting mechanism

Abstract

A rotary lifting mechanism comprises a lifting frame, a hollow rotary table is mounted on the lifting frame, an outer sleeve is fixedly mounted in the hollow rotary table, a top plate is mounted at the top of the outer sleeve, a driving motor is mounted on the top plate, an inner sleeve and a nut are arranged in the outer sleeve, the nut is fixedly connected to the top of the inner sleeve, and a first lead screw is assembled in the nut. The driving motor is in transmission connection with the first lead screw through a gear transmission mechanism, at least one plane is arranged on the outer wall face of the inner sleeve, an anti-rotation assembly is fixedly connected to the lower end of the outer sleeve, a through hole corresponding to the inner sleeve in shape is formed in the anti-rotation assembly, and the inner sleeve at the lower end penetrates through the through hole and then is fixedly connected with the mounting flange. The rotary lifting device is used for solving the problems of limited weight and small lifting stroke of a test element loaded by the existing rotary lifting device.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of rotary lifting mechanisms. BACKGROUND

[0002] In the underwater test work of ultrasonic transducer, two devices need to be used, one is used to install ultrasonic transducer, another is used to install test element, in the test process, test element needs to move left and right under water while doing rotary lifting motion, to measure various data of underwater acoustic product in turbulence condition, current rack driving test element lifting and rotation is used, for example: CN214096542U, underwater acoustic measuring device, when test element weight is less than 1 ton, it can meet the test demand, but when test element weight is higher than 1 ton, rack and motor overload, wear and tear aggravation phenomenon occurs, device service life is shortened, while lifting stroke is small. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of rotary lifting mechanisms, for solving the problems of existing rotary lifting device loading test element weight limit and lifting stroke small.

[0004] In order to solve the above problems, the technical scheme of the utility model is:

[0005] A kind of rotary lifting mechanism, including lifting frame, hollow turntable is installed on lifting frame, hollow turntable is fixedly installed with outer sleeve, top plate is installed on the top of outer sleeve, drive motor is installed on top plate, inner sleeve and nut are arranged in outer sleeve, nut is fixedly connected at the top of inner sleeve, first lead screw is assembled in nut, drive motor is transmissionally connected with first lead screw by gear transmission mechanism, at least one plane is arranged on the outer wall surface of inner sleeve, anti-rotation assembly is fixedly connected with the lower end of outer sleeve, through hole corresponding with the shape of inner sleeve is formed in anti-rotation assembly, inner sleeve passes through through hole and is fixedly connected with mounting flange.

[0006] The lifting frame includes box body and support plate, the support plate is fixedly connected with the bottom plate by a plurality of pipes, the guide sleeve is assembled on the pipe, the box body between the support plate and the bottom plate is fixedly connected with each guide sleeve, the lead screw lifter is installed on the support plate, the box body is connected with the lead screw lifter, and the hollow turntable is installed on the box body.

[0007] Bearing is installed between outer sleeve and box body.

[0008] The second lead screw lifter is double second lead screw lifter, and the two second lead screws in the double second lead screw lifter are arranged at diagonal positions of the box body.

[0009] The anti-rotation assembly comprises a flange sleeve connected to the lower end of the outer sleeve, a groove plate threadedly connected to the lower end of the flange sleeve, a through hole formed in the groove plate, a copper pressing block arranged on the flat side of the inner sleeve, and a jackscrew installed on the groove plate and used to push the copper pressing block to abut against the flat surface of the inner sleeve.

[0010] A protective cover is installed on the top plate, and the gear transmission mechanism is arranged in the protective cover.

[0011] The utility model discloses the beneficial effect is: the rack drive test element rotation of existing is changed to the first screw drive test element rotation, lets the weight of test element be borne by the first screw, lets the drive motor not too much bear test element weight influence, makes rotation lifting mechanism can drive high weight test element, can also realize two -stage lifting to test element simultaneously, has increased the lifting stroke of test element. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further described in connection with the drawings:

[0013] Fig. 1 It is the three -dimensional structure schematic diagram of the utility model,

[0014] Fig. 2 It is the three -dimensional structure schematic diagram of the utility model,

[0015] Fig. 3 It is the three -dimensional structure schematic diagram of the utility model,

[0016] Fig. 4 It is the partial sectional structure schematic diagram of the utility model.

[0017] In the drawing: protective cover 1, outer sleeve 2, hollow rotating platform 3, anti-rotation assembly 4, mounting flange 5, bottom plate 6, box 7, second screw 8, guide pipe 9, support plate 10, second screw elevator 11, bearing 12, gear transmission mechanism 13, first screw 14, top plate 15, drive motor 16, inner sleeve 17, nut 18, flange sleeve 41, groove plate 42, jackscrew 43, copper pressing block 44. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] As Figs. 1 to 4As shown, a rotary lifting mechanism comprises a lifting frame, a hollow rotary table 3 is installed on the lifting frame, the hollow rotary table 3 is a servo hollow rotary table 3 reducer, an outer sleeve 2 is fixedly installed in the hollow rotary table 3, the outer sleeve 2 is driven to rotate by the hollow rotary table 3, a top plate 15 is installed on the top of the outer sleeve 2, a driving motor 16 is installed on the top plate 15, the driving motor 16 is a speed reducer motor, an inner sleeve 17 and a nut 18 are arranged in the outer sleeve 2, the nut 18 is fixedly connected to the top of the inner sleeve 17, a first lead screw 14 is assembled in the nut 18, the driving motor 16 is in transmission connection with the first lead screw 14 through a gear transmission mechanism 13, a flat surface is arranged on each side of the outer wall surface of the inner sleeve 17, a rotation prevention assembly 4 is fixedly connected to the lower end of the outer sleeve 2, a through hole corresponding in shape to the inner sleeve 17 is formed in the rotation prevention assembly 4, the lower end of the inner sleeve 17 passes through the through hole and is fixedly connected to a mounting flange 5, and the rotation prevention assembly 4 is used for limiting the inner sleeve 17 so that the inner sleeve 17 cannot rotate with the first lead screw 14.

[0020] In use, the test element is installed on the mounting flange 5, the driving motor 16 drives the first lead screw 14 to rotate through the gear transmission mechanism 13, the rotating first lead screw 14 drives the inner sleeve 17 to move up and down, so as to lift the test element, and the outer sleeve 2 is driven to rotate by the hollow rotary table 3, so as to rotate the test element.

[0021] The lifting frame comprises a box body 7 and a support plate 10, the support plate 10 is fixedly connected to two bottom plates 6 through four guide pipes 9, guide sleeves are assembled on the guide pipes 9, the box body 7 arranged between the support plate 10 and the bottom plates 6 is fixedly connected to the guide sleeves, an elevator 11 is installed on the support plate 10, the box body 7 is connected to the elevator 11, and the hollow rotary table 3 is installed on the box body 7. The box body 7 is driven to move up and down along the guide pipes 9 by the elevator 11, so as to realize secondary lifting of the test element.

[0022] A bearing 12 is installed between the outer sleeve 2 and the box body 7. The bearing 12 can improve the stability of the outer sleeve 2 when rotating.

[0023] The elevator 11 is a double second lead screw 8 elevator 11, and two second lead screws 8 in the double second lead screw 8 elevator 11 are arranged at diagonal positions of the box body 7. The two second lead screws 8 arranged at diagonal positions can ensure that the box body 7 is uniformly stressed.

[0024] The anti-rotation assembly 4 comprises a flange sleeve 41 connected to the lower end of the outer sleeve 2, a groove plate 42 is threadedly connected to the lower end of the flange sleeve 41, a through hole is formed in the groove plate 42, a copper pressing block 44 is arranged on one side of the flat surface of the inner sleeve 17, a jackscrew 43 is arranged on the groove plate 42, and the jackscrew 43 pushes the copper pressing block 44 to abut against the flat surface of the inner sleeve 17. The inner sleeve 17 moves up and down and rubs against the copper pressing block 44, and since the copper pressing block 44 is softer than the steel inner sleeve 17, only the copper pressing block 44 can be worn out, thereby protecting the inner sleeve 17 and eliminating the gap to ensure the stability of the inner sleeve 17 during lifting.

[0025] The protective cover 1 is arranged on the top plate 15, and the gear transmission mechanism 13 is arranged in the protective cover 1. The gear transmission mechanism 13 is protected by the protective cover 1.

[0026] The content described in the embodiments of the present specification is only a list of implementation forms of the utility model concept, and the protection scope of the utility model should not be regarded as being limited to the specific forms stated in the embodiments, and the protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art according to the utility model concept.

Claims

1. A slewing lift mechanism characterized by: The lifting frame includes a hollow rotary table (3) mounted thereon, an outer sleeve (2) fixedly mounted in the hollow rotary table (3), a top plate (15) mounted on the top of the outer sleeve (2), a driving motor (16) mounted on the top plate (15), an inner sleeve (17) and a nut (18) arranged in the outer sleeve (2), the nut (18) being fixedly connected to the top of the inner sleeve (17), a first lead screw (14) assembled in the nut (18), the driving motor (16) being in transmission connection with the first lead screw (14) through a gear transmission mechanism (13), at least one plane being arranged on the outer wall of the inner sleeve (17), a rotation prevention assembly (4) being fixedly connected to the lower end of the outer sleeve (2), a through hole corresponding in shape to the inner sleeve (17) being formed in the rotation prevention assembly (4), and the lower end inner sleeve (17) being fixedly connected to a mounting flange (5) after passing through the through hole.

2. A slewing lift mechanism according to claim 1, wherein: The lifting frame includes a box body (7) and a support plate (10), the support plate (10) being fixedly connected to a plurality of bottom plates (6) through a plurality of conduits (9), a guide sleeve being assembled on the conduit (9), the box body (7) arranged between the support plate (10) and the bottom plate (6) being fixedly connected to each guide sleeve, a lifting machine (11) being mounted on the support plate (10), the box body (7) being connected to the lifting machine (11), and the hollow rotary table (3) being mounted on the box body (7).

3. A slewing lift mechanism according to claim 2, wherein: A bearing (12) is mounted between the outer sleeve (2) and the box body (7).

4. The slewing lift mechanism of claim 2, wherein: The lifting machine (11) is a double-second-lead-screw (8) lifting machine (11), and the two second lead screws (8) in the double-second-lead-screw (8) lifting machine (11) are arranged at diagonal positions of the box body (7).

5. A slewing lift mechanism according to any one of claims 1 to 4, wherein: The rotation prevention assembly (4) includes a flange sleeve (41) connected to the lower end of the outer sleeve (2), a groove plate (42) mounted on the lower end of the flange sleeve (41), a through hole being formed in the groove plate (42), a copper pressing block (44) being arranged on one side of the plane of the inner sleeve (17), a jackscrew (43) being mounted on the groove plate (42), and the jackscrew (43) pushing the copper pressing block (44) to abut against the plane of the inner sleeve (17).

6. A slewing lift mechanism according to any one of claims 1 to 4, wherein: A protective cover (1) is mounted on the top plate (15), and the gear transmission mechanism (13) is arranged in the protective cover (1).

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