CN218506091U - Lifting driving mechanism - Google Patents

Abstract

The utility model relates to a lifting driving mechanism, which comprises a telescopic outer sleeve, wherein the bottom of the telescopic outer sleeve is provided with an opening, and the top of the telescopic outer sleeve is provided with a driving unit; the screw rod is arranged in the telescopic outer sleeve, the top end of the screw rod is connected with the driving unit, and a screw rod nut is sleeved on the screw rod; the telescopic inner sleeve is arranged in the telescopic outer sleeve and can only move axially relative to the telescopic outer sleeve, and the telescopic inner sleeve is connected with the screw nut. Compared with the prior art, the utility model designs the telescopic sleeve structure driven by the screw rod, after the driving unit works, the screw rod is driven to rotate, the screw rod nut on the screw rod converts the rotary motion into the up-and-down linear motion, the telescopic inner sleeve is driven to extend or retract from the bottom of the telescopic outer sleeve, and the linear driving is realized; the structure is compact in whole, small in occupied space, high in operation precision and strong in bearing capacity.

Description

Lifting driving mechanism

Technical Field

The utility model belongs to the technical field of mechanical equipment and specifically relates to a lifting driving mechanism is related to.

Background

The ocean platform deck structure body mainly comprises a panel, a steel beam, a supporting column and other components, dozens of steel plate raw materials are welded into an integral deck plane in a splicing mode in the manufacturing process, then the installation positions of the components such as the section steel beam and the supporting column are planned and drawn on the deck panel, the section steel beam, the supporting column and the other components are installed according to the working procedures and are welded and fixed to form a basic deck plate structure body, and finally a plurality of deck plate structures are combined, spliced, built and configured with other equipment facilities to build the basic ocean platform structure body.

In the above manufacturing process, the team portal is required to install the steel beam on the deck panel. However, the gripping and carrying load capacity of the conventional large-sized industrial robot cannot meet the requirement, and the large-sized industrial robot is poor in economy. Meanwhile, the upper part of the assembly portal frame is limited by space, and large parts cannot be installed below the assembly portal frame, so that the assembly of the steel beam is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lifting driving mechanism in order to overcome the defect that above-mentioned prior art exists, satisfy the scene demand that occupation space is little, bearing capacity is strong.

The purpose of the utility model can be realized by the following technical proposal:

a lift drive mechanism comprising:

the bottom of the telescopic outer sleeve is provided with an opening, and the top of the telescopic outer sleeve is provided with a driving unit;

the screw rod is arranged in the telescopic outer sleeve, the top end of the screw rod is connected with the driving unit, and a screw rod nut is sleeved on the screw rod;

the telescopic inner sleeve is arranged in the telescopic outer sleeve and can only move axially relative to the telescopic outer sleeve, and the telescopic inner sleeve is connected with the screw nut.

Furthermore, the outer wall of the telescopic inner sleeve is provided with a first stopper, the inner wall of the telescopic outer sleeve is provided with a second stopper, and the first stopper and the second stopper are a guide rail and a sliding block which are axially arranged.

Furthermore, a bearing is installed at the top of the telescopic outer sleeve through a bearing seat, and the screw rod penetrates through the bearing to be connected with the driving unit.

Further, a flange plate is installed at the top end of the bearing seat, and the driving unit is installed on the flange plate and keeps a fixed gap with the flange plate.

Furthermore, the bottom of the telescopic inner sleeve is provided with a connecting pin shaft.

Furthermore, the outer wall of the telescopic inner sleeve is provided with strip-shaped blocks which are distributed axially, and the inner wall of the telescopic outer sleeve is provided with a groove part which is embedded with the strip-shaped blocks.

Further, the driving unit is a reduction motor.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model designs a telescopic sleeve structure driven by a screw rod, after a driving unit works, the screw rod is driven to rotate, a screw nut on the screw rod converts the rotary motion into vertical linear motion, and a telescopic inner sleeve is driven to extend or retract from the bottom of a telescopic outer sleeve to realize linear driving; the structure is compact in whole, small in occupied space, high in operation precision and strong in bearing capacity.

2. The first limiting stopper and the second limiting stopper which are matched with each other are arranged and used for guiding and limiting the relative movement of the telescopic outer sleeve and the telescopic outer sleeve, so that the stability in working is improved.

3. The lead screw is fixed through the bearing, and the bottom is the free end, the dismouting and the maintenance of the structure of being convenient for.

4. A gap is reserved between the driving unit and the flange plate for fixation, and the driving unit and the flange plate can be properly adjusted in a self-adaptive mode, so that the mounting precision is improved.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic sectional view of the retracted state of the present invention.

Reference numerals are as follows:

1-a telescopic outer sleeve; 2-telescoping inner sleeves; 3-a screw rod; 4-lead screw nut; 5-a drive unit; 6-a first stopper; 7-a second stop; 8-bearing seats; 9-a bearing; 10-flange plate; 11-connecting pin shaft.

Detailed Description

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as is understood by those of ordinary skill in the art to which the invention belongs.

All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with specific embodiments. It is noted that in the detailed description of these embodiments, in order to provide a concise description, all features of an actual implementation may not be described in detail.

Examples

As shown in fig. 1 and 2, the present embodiment provides a lifting driving mechanism for precisely lifting an object, which specifically includes a telescopic outer tube 1, a telescopic inner tube 2, a screw rod 3, a screw nut 4 and a driving unit 5. The telescopic outer sleeve 1 and the telescopic inner sleeve 2 are rectangular cylinders and are nested with each other, and the telescopic inner sleeve 2 penetrates from the bottom of the telescopic outer sleeve 1 and can be telescopic. The bottom of the telescopic inner sleeve 2 is provided with a connecting pin shaft 11, and a gripper and other mechanisms can be arranged to grip the article. The driving unit 5 is installed at the top of the telescopic outer sleeve 1, the screw rod 3 is arranged in the telescopic outer sleeve 1, the top of the screw rod 3 is connected with the driving unit 5, and the bottom of the screw rod is a free end. The lead screw 3 is sleeved with a lead screw nut 4, and the top of the telescopic inner sleeve 2 is connected with the lead screw nut 4. Therefore, after the driving unit 5 works, the screw rod 3 is driven to rotate, the screw nut 4 on the screw rod 3 converts the rotation motion into vertical linear motion, the telescopic inner sleeve 2 is driven to extend or retract from the bottom of the telescopic outer sleeve 1, and linear driving is realized.

In this embodiment, a first stopper 6 is disposed on the outer wall of the telescopic inner tube 2, a second stopper 7 is disposed on the inner wall of the telescopic outer tube 1, and the first stopper 6 and the second stopper 7 are guide rails and sliding blocks axially disposed with each other, so as to improve the stability of the telescopic inner tube after being stretched. Preferably, strip-shaped blocks are axially distributed on two sides of the outer wall of the telescopic inner sleeve 2, corresponding groove pieces are arranged on the inner wall of the telescopic outer sleeve 1, the groove pieces are distributed in a vertical dot shape, and at least two groove pieces are arranged in each vertical direction. The groove member and the bar-shaped block are engaged with each other and can move axially up and down.

In this embodiment, a bearing seat 8 is provided on the top of the telescopic outer tube 1, and a bearing 9 is mounted in the bearing seat 8. The driving unit 5 is fixed on the bearing seat 8, and the top end of the screw rod 3 passes through the bearing 9 and then is connected with the driving unit 5 through a coupler. The bearing seat 8 and the top of the telescopic outer sleeve 1 are connected through bolts or directly welded. The lead screw 3 is fixed by the bearing 9, so that the autorotation stability is better. Preferably, a flange plate 10 is installed on the top end of the bearing housing 8, and the driving unit 5 is installed on the flange plate 10 and fixed with a gap from the flange plate 10. The structure can properly and adaptively adjust the installation position of the driving unit 5, and improve the matching precision of the driving unit and the screw rod 3. The drive unit 5 may be specifically an existing reduction motor or the like, and is not specifically developed.

The working process of the embodiment is shown in fig. 1 and 3: in the initial state, the telescopic inner sleeve 2 is retracted in the telescopic outer sleeve 1. When an object needs to be grabbed, the driving unit 5 is started to drive the screw rod 3 to rotate, the screw nut 4 on the screw rod 3 moves downwards, so that the telescopic inner sleeve 2 positioned in the telescopic outer sleeve 1 is driven to integrally move downwards and extend out of the bottom, and the grab at the bottom can be started to grab the object. After the object is grabbed, the driving unit 5 rotates reversely to drive the screw rod 3 to rotate reversely, and the screw nut 4 on the screw rod 3 moves upwards so as to drive the telescopic inner sleeve 2 to move upwards integrally, and the object is grabbed to be carried.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (7)

1. A lift drive mechanism, comprising:

the telescopic outer sleeve (1) is provided with an opening at the bottom and a driving unit (5) at the top;

the screw rod (3) is arranged inside the telescopic outer sleeve (1), the top end of the screw rod is connected with the driving unit (5), and a screw rod nut (4) is sleeved on the screw rod (3);

the telescopic inner sleeve (2) is arranged in the telescopic outer sleeve (1) and can only move axially relative to the telescopic outer sleeve (1), and the telescopic inner sleeve (2) is connected with the lead screw nut (4).

2. The lifting driving mechanism according to claim 1, characterized in that the outer wall of the inner telescopic tube (2) is provided with a first stopper (6), the inner wall of the outer telescopic tube (1) is provided with a second stopper (7), and the first stopper (6) and the second stopper (7) are a guide rail and a slide block which are axially arranged.

3. A lifting drive mechanism as claimed in claim 1, characterized in that the top of the telescopic outer tube (1) is provided with a bearing (9) via a bearing seat (8), and the screw (3) is connected to the drive unit (5) via the bearing (9).

4. A lift drive mechanism according to claim 3, wherein a flange plate (10) is mounted on the top end of the bearing housing (8), and the drive unit (5) is mounted on the flange plate (10) with a fixed gap from the flange plate (10).

5. A lifting drive as claimed in claim 1, characterized in that the bottom of the telescopic inner tube (2) is provided with a connecting pin (11).

6. The lifting driving mechanism as claimed in claim 1, characterized in that the outer wall of the telescopic inner sleeve (2) is provided with axially distributed bar-shaped blocks, and the inner wall of the telescopic outer sleeve (1) is provided with groove members for embedding the bar-shaped blocks.

7. A lifting drive as claimed in claim 1, characterized in that the drive unit (5) is a gear motor.

Images