CN210611562U

CN210611562U - Slide rail structure, lifting transmission mechanism and lifting cabinet

Info

Publication number: CN210611562U
Application number: CN201920972909.1U
Authority: CN
Inventors: 宋洪典; 邓佳骏; 周勇
Original assignee: Jiangsu Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-05-26
Anticipated expiration: 2029-06-26

Abstract

The utility model discloses a slide rail structure, a lifting transmission mechanism and a lifting cabinet, which comprises a bottom plate and a slide rail component assembled with the bottom plate, wherein the bottom plate comprises a back plate and a pair of wing plates which are integrally connected with a pair of opposite edges at the same side of the back plate; the wing plates and the back plate are bent into an L-shaped structure; the slide rail assembly comprises a pair of side slide rails which are respectively arranged on the side end surfaces corresponding to the wing plates in the opposite direction, and at least one middle slide rail which is distributed on the side end surface of the back plate facing the wing plates along the direction of the wing plates. The side slide rails and the middle slide rails are matched for use, the side slide rails form a guiding sliding effect on the left side and the right side of the lifting transmission mechanism, the middle slide rails form the lifting transmission mechanism and form a guiding sliding effect on the rear side perpendicular to the left side and the right side, a multi-directional limiting guiding effect is formed when the lifting transmission mechanism drives the lifting cabinet in the sliding process, and therefore stability of the lifting transmission mechanism in the guiding process is improved.

Description

Slide rail structure, lifting transmission mechanism and lifting cabinet

Technical Field

The utility model relates to a lifting cabinet technical field especially relates to a slide rail structure, lift drive mechanism and lifting cabinet.

Background

In order to improve space utilization in current house, generally all can set up the wall at wall high-out department and hang the cabinet, but get the thing from the eminence very hard time-consuming, set up the cabinet body in the low extravagant space again. At this time, a cabinet body capable of being lifted is needed, which not only can save space, but also can enable users with different heights to take out articles conveniently and quickly. Therefore, the structure which is convenient for lifting the cabinet body needs to be designed, so that the object can be taken and placed, and the cabinet body does not occupy effective utilization space under the condition of not using the cabinet body.

The lifting cabinet in the current market is divided into a suspension cable type and a screw rod transmission type according to the transmission mode. Although the transmission modes of the two schemes are different, the movement positioning of the two schemes is realized by two slide rails which extend up and down, and the slide rails are generally fixed on the back of the cabinet. When the cabinet normally moves, if the left weight and the right weight have large deviation, the operation posture of the cabinet can incline to a large extent, and the slide rail fixed on the back of the cabinet can bear unbalanced force in the left side and the right side directions, so that the service life of the slide rail can be seriously influenced in the past.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a slide rail structure to the solution improves the technical problem of lift drive mechanism at the stability of lift in-process.

The second purpose of the utility model is to provide a lifting transmission mechanism to solve the technical problem who improves lifting transmission mechanism at the stability of lift in-process.

The third purpose of the utility model is to provide a lifting cabinet to solve the technical problem who improves the stability of lift drive mechanism at the lift in-process.

The utility model discloses a slide rail structure realizes like this:

a slide rail structure suitable for a lifting transmission mechanism comprises:

the bottom plate comprises a back plate and a pair of wing plates which are integrally connected with a pair of opposite edges on the same side of the back plate; the wing plates and the back plate are bent into an L-shaped structure;

the sliding rail assembly comprises a pair of side sliding rails which are respectively arranged on the side end surfaces of the pair of wing plates which correspond to each other in an opposite mode, and at least one middle sliding rail which is distributed on the side end surface of the back plate which faces the wing plates along the direction of the wing plates.

The utility model discloses a lift drive mechanism realizes like this:

a lifting transmission mechanism is suitable for a lifting cabinet and comprises a slide rail structure and at least one pair of movable beams which are simultaneously connected with a pair of side slide rails and at least one middle slide rail of the slide rail structure;

the side sliding rail comprises a side sliding groove fixedly connected with the wing plate and a side sliding block which is in sliding fit with the side sliding groove and is suitable for moving along the side sliding groove;

the middle sliding rail comprises a middle sliding groove fixedly connected with the back plate and a middle sliding block which is in sliding fit with the middle sliding groove and is suitable for moving along the middle sliding groove;

the pair of movable beams respectively comprise a base plate which is parallel to the backboard and a pair of connecting plates which are integrally connected with one side end of the base plate facing the backboard; the connecting plate is fixedly connected with the side sliding block; and

and the side end face of the substrate facing the back plate is fixedly connected with the middle sliding block through a connecting frame.

In a preferred embodiment of the present invention, the connecting plate is an L-shaped structural plate; and

the connecting frame comprises a supporting plate fixedly connected with the middle sliding block and a pair of L-shaped folded plates fixedly connected with one side end, facing the base plate, of the supporting plate;

the length of the support panel along the extension direction of the middle slider is larger than the length of the L-shaped folded plate along the extension direction of the middle slider.

In an alternative embodiment of the present invention, the slide rail assembly includes a middle slide rail distributed along the wing plate direction in a middle portion of the side end surface of the back plate facing the wing plate.

In an optional embodiment of the present invention, the slide rail assembly includes a pair of centering slide rails respectively distributed along the wing plate direction on both sides of the middle portion of the side end surface of the back plate facing the wing plate.

In a preferred embodiment of the present invention, the lifting transmission mechanism further comprises at least one lifting driving unit disposed between the movable beam and the back plate;

at least one lifting driving unit is positioned in an interval formed between a pair of middle slide rails;

the lifting driving unit comprises a lifting support column fixedly connected with the end face of one side, facing the movable beam, of the back plate, a screw rod arranged in the lifting support column and suitable for rotating in the lifting support column, and a power assembly connected with the screw rod to drive the screw rod to rotate;

the lifting support columns are distributed along the extending direction of the wing plates.

In a preferred embodiment of the present invention, an accommodating cavity is formed inside the lifting support column along the length direction of the lifting support column, and the screw rod is accommodated in the accommodating cavity; and

a pair of symmetrical notches are formed in the lifting support column towards two side ends of the pair of wing plates respectively along the length direction of the lifting support column; a screw nut is sleeved on the screw rod;

the nut is integrally connected with a pair of sliding tables which are respectively suitable for penetrating through the pair of notches; the pair of sliding tables are fixedly connected with the movable beam positioned above the pair of movable beams; in the process of forward and/or reverse rotation of the screw rod, the screw drives the movable beam to do ascending and/or descending motion along the lifting support column.

In an optional embodiment of the present invention, the lifting transmission mechanism includes a lifting driving unit disposed between the movable beam and the back plate; the lifting driving unit is connected with the middle part of the back plate;

the power assembly comprises a helical gear connected with one end of the screw rod, a worm meshed with the helical gear and a driving motor connected with the worm;

the top end of the lifting support column, the bevel gear and the worm are all accommodated in a fixed shell cover;

the fixed shell cover is suitable for being detachably connected with the part, above the lifting support column, of the back plate;

the bottom of the lifting support column is detachably connected with one end, far away from the motor cover, of the back plate.

In an optional embodiment of the present invention, the lifting transmission mechanism includes a pair of lifting driving units disposed between the movable beam and the back plate; the pair of lifting driving units are connected with the two sides of the middle part of the back plate;

the power assembly comprises a helical gear connected with one end of the screw rod, a worm meshed with the helical gear and a double-side output driving motor connected with the worm;

two output shafts of the double-side output driving motor are respectively connected with the worms of the pair of lifting driving units;

The utility model discloses a lifting cabinet realizes like this:

a lift cabinet comprising: the lifting transmission mechanism.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a slide rail structure, lift drive mechanism and lift cabinet, side slide rail and well slide rail through the cooperation use have the side slide rail to form the direction sliding action of side about lift drive mechanism, form the rear of lift drive mechanism side about the perpendicular to by well slide rail again and form the direction sliding action, form to lift drive mechanism and drive the multi-direction spacing direction effect of lift cabinet in the slip in-process to the stability of lift drive mechanism direction in-process has been improved.

Furthermore, the pair of lifting driving units are driven by the double-side output driving motors, the power unit is a single driver, redundant drivers are not added, and a double-driving structure for the movable beam is formed. And to the great movable cabinet body of bearing capacity, the suitability is stronger, can effectively improve the movable cabinet body in the lift operation in-process stability.

Drawings

Fig. 1 is an overall schematic view of a lifting transmission mechanism according to an alternative embodiment of the present invention;

FIG. 2 is a schematic diagram of an exploded structure corresponding to the lifting transmission mechanism of FIG. 1;

FIG. 3 is a schematic view of the movable beam of the lifting transmission mechanism of FIG. 1 in a lowered position relative to the back plate;

fig. 4 is a schematic structural view of a power assembly of the lifting transmission mechanism of the present invention;

fig. 5 is a schematic structural view of a movable beam of the lifting transmission mechanism in a descending state relative to a back plate in another alternative embodiment of the present invention;

fig. 6 is a first schematic structural view of a movable beam of the lifting transmission mechanism in an alternative implementation of the present invention, in a retracted state, i.e., a normal state, relative to a back plate;

FIG. 7 is an enlarged view of the portion A of FIG. 6;

fig. 8 is a schematic structural view ii of the movable beam of the lifting transmission mechanism in another alternative implementation of the present invention, in a retracted state relative to the back plate, i.e., in a normal state;

fig. 9 is an enlarged view of the part B of fig. 8.

In the figure: the device comprises a back plate 1, a wing plate 2, a hollowed-out opening 3, a movable beam 5, a side sliding groove 6, a side sliding block 7, a middle sliding groove 8, a middle sliding block 9, a base plate 10, a connecting plate 11, a supporting plate 13, an L-shaped folded plate 15, a lifting supporting column 17, a screw rod 18, a notch 21, a screw nut 23, a sliding table 25, a helical gear 27, a worm 28, a driving motor 29, a cover plate 31, a fixed shell cover 32, a rotating bearing 33 and a double-side output driving motor 35.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example 1:

referring to fig. 1 to 9, the present embodiment provides a slide rail structure suitable for a lifting transmission mechanism, including: the bottom plate to and the slide rail set spare that links to each other with the bottom plate.

The bottom plate comprises a back plate 1 and a pair of wing plates 2 which are integrally connected with a pair of opposite edges on the same side of the back plate 1; the wing plates 2 and the back plate 1 are bent into an L-shaped structure; the wing plate 2 and the back plate 1 of the present embodiment are of an integrated structure, which not only facilitates the development of a mold, but also facilitates the manufacturing. In addition, for the backplate 1 of this embodiment, a totally-enclosed, that is, full-size structure may be adopted, or on the premise of ensuring the strength of the backplate 1, a plurality of hollowed-out openings 3 are provided on the backplate 1, so as to save consumables and achieve the purpose of reducing cost.

The slide rail assembly comprises a pair of side slide rails respectively arranged on the side end surfaces corresponding to the wing plates 2 in opposite directions, and at least one middle slide rail distributed along the wing plates 2 on the side end surface of the back plate 1 facing the wing plates. Because the L-shaped structure is formed between the wing plate 2 and the back plate 1, the side slide rails are actually formed oppositely to limit the lateral guide sliding of the left side and the right side of the lifting transmission mechanism, and the middle slide rails on the back plate 1 are actually formed oppositely to limit the guide sliding of the front side and the rear side of the lifting transmission mechanism, so that the side slide rails and the middle slide rails which are matched to work form the limit guide function of the lifting transmission mechanism in multiple directions, and the stability of the lifting transmission mechanism in the operation process can be effectively improved.

Example 2:

referring to fig. 1 to 9, on the basis of the slide rail structure of embodiment 1, the present embodiment provides a lifting transmission mechanism, which is suitable for a lifting cabinet, and specifically includes the slide rail structure of embodiment 1, and at least one pair of movable beams 5 connected to a pair of side slide rails and at least one middle slide rail of the slide rail structure at the same time, in this embodiment, the pair of movable beams 5 is taken as an example, and the pair of movable beams 5 are respectively suitable for being fixedly connected to the top and the bottom of the side slide rails.

In detail, the side slide rail comprises a side slide groove 6 fixedly connected with the wing plate 2 and a side slide 7 which is in sliding fit with the side slide groove 6 and is suitable for moving along the side slide groove 6. The middle slide rail comprises a middle slide groove 8 fixedly connected with the back plate 1 and a middle slide block 9 which is in slide fit with the middle slide groove 8 and is suitable for moving along the middle slide groove 8. The pair of movable beams 5 respectively comprise a base plate 10 which is suitable for being parallel to the backboard 1 and a pair of connecting plates 11 which are integrally connected with one side end of the base plate 10 facing the backboard 1; the connecting plate 11 is fixedly connected with the side sliding block 7; and the side end surface of the substrate 10 facing the back plate 1 is fixedly connected with the middle slide block 9 through a connecting frame.

Taking an alternative embodiment as an example, first, the connecting plate 11 adopted in this embodiment is an L-shaped structural plate, and here, the L-shaped structural plate is adopted to facilitate that a part of the connecting plate 11 is fixedly connected with the base plate 10 and a part of the connecting plate is fixedly connected with the side slider 7. And preferably, the size of the fixed connection part of the L-shaped structural plate and the side sliding block 7 is larger than that of the connection part of the L-shaped structural plate and the base plate 10, so that the design significance is mainly to enlarge the contact area of the L-shaped structural plate and the side sliding block 7, and the stability of the integral side sliding block 7 in the driving process of the L-shaped structural plate is improved. Secondly, the connecting frame comprises a supporting plate 13 fixedly connected with the middle sliding block 9 and a pair of L-shaped folded plates 15 fixedly connected with one side end, facing the base plate 10, of the supporting plate 13; in order to improve the stability of the connection position of the connecting frame and the middle slide block 9, the length of the supporting plate 13 along the extending direction of the middle slide block 9 is larger than that of the L-shaped folded plate 15 along the extending direction of the middle slide block 9, namely, the stability of the middle slide block 9 in the driving process of the supporting plate 13 is improved by enlarging the contact area of the supporting plate 13 and the middle slide block 9.

In an alternative embodiment, the slide rail assembly includes a middle slide rail distributed along the direction of the fin wings 2 in the middle of the side end surface of the back plate 1 facing the fin wings 2, and in this case, it is preferable that the middle slide rail is spaced apart from the pair of fin wings 2 by the same distance. Thus, a center rail and a pair of side rails together form a three rail configuration. In this embodiment, a lifting driving unit for driving the movable beam 5 to move up and down with respect to the back plate 1 may be provided in the section formed by the middle slide rail and the pair of wing plates 2.

In another alternative embodiment, the slide rail assembly includes a pair of middle slide rails respectively distributed along the direction of the wing plates 2 on both sides of the middle of the side end surface of the back plate 1 facing the wing plates 2. Thus, the pair of center slide rails and the pair of side slide rails together form a four-rail structure. With reference to the drawings of the present embodiment, the present embodiment specifically takes a four-rail structure as an example for expansion and description. For the four-slide rail structure, the lifting transmission mechanism under the implementation condition further comprises at least one lifting driving unit arranged between the movable beam 5 and the back plate 1; at least one lifting drive unit is located in an interval formed between the pair of middle slide rails.

The lifting driving unit comprises a lifting support column 17 fixedly connected with the end face of one side of the back plate 1 facing the movable beam 5, a screw rod 18 arranged inside the lifting support column 17 and suitable for rotating inside the lifting support column 17, and a power assembly connected with the screw rod 18 to drive the screw rod 18 to rotate; the lifting support columns 17 are distributed along the extending direction of the fin wing plate 2.

A receiving cavity is formed in the interior of the lifting support column 17 in a penetrating manner along the length direction of the lifting support column 17, the screw rod 18 is received in the receiving cavity, and the screw rod 18 is connected with the inner wall of the receiving cavity through a rotating bearing, so that the screw rod 18 can smoothly rotate in the receiving cavity. A pair of symmetrical notches 21 are formed in the lifting support column 17 towards two side ends of the pair of wing plates 2 along the length direction of the lifting support column 17, and the notches 21 are distributed along the axial direction of the screw rod 18; the screw rod 18 is sleeved with a screw nut 23.

The nut 23 is integrally connected with a pair of sliding tables 25 which are respectively suitable for passing through the pair of notches 21; the pair of sliding tables 25 are fixedly connected with the movable beam 5 positioned above the pair of movable beams 5; during the forward and/or reverse rotation of the screw rod 18, the nut 23 drives the movable beam 5 to make ascending and/or descending movement along the lifting support column 17. It should be noted here that the pair of slide tables 25 may be provided as a two-piece structure, or the pair of slide tables 25 may be an integral structure, and the symmetrical embodiment is not absolutely limited.

For example, the lifting transmission mechanism comprises a lifting driving unit arranged between the movable beam 5 and the back plate 1; the lifting driving unit is connected with the middle position of the back plate 1. The power assembly comprises a bevel gear 27 connected with one end of the screw rod 18 through a coupler 33, a worm 28 meshed with the bevel gear 27 and a driving motor 29 connected with the worm 28; the worm 28 is driven to rotate by the driving motor 29, and due to the meshing transmission action of the worm 28 and the helical gear 27, the helical gear 27 drives the screw rod 18 to rotate, and under the rotation action of the screw rod 18, the screw 23 can move up and down along the axial direction of the screw rod 18, and at the moment, the screw 23 synchronously drives the movable beam 5 to move up and down along the axial direction of the screw rod 18 through the pair of sliding tables 25, that is, the movable beam 5 generates the lifting motion relative to the backboard 1. The control of the motion state of the movable beam 5 is realized by the driving motor 29 in the whole process, and the operation is convenient.

More specifically, the top end of the lifting support column 17, the helical gear 27, the coupling 33 and the worm 28 are all accommodated in a fixed casing 32; the fixed housing 32 is adapted to be detachably connected to the part of the backboard 1 above the lifting support column 17; the top end part of the screw rod 18 is sleeved with a pair of rotating bearings 31 and is connected with a fixed shell 32 in a rotating mode, the fixed shell 32 is arranged without influencing the rotation of the screw rod 18, and the helical gear 27 is sleeved on the portion, located between the pair of rotating bearings 31, of the screw rod 18. The bottom of the lifting support column 17 is detachably connected with one end of the back plate 1 far away from the motor cover. The detachable connection here is for example but not limited to a bolt fastening. In addition, the integral fixed housing 32 and the drive motor 29 are simultaneously covered by the cover plate 31 connected to the side end face of the backboard 1 facing the walking beam 5, i.e., the drive motor 29 and the fixed housing 32 covered behind the cover plate 31 are not visible from the outer surface of the integral lifting transmission mechanism.

As another possible solution, the lifting transmission mechanism includes a pair of lifting driving units disposed between the movable beam 5 and the backboard 1; the pair of lifting driving units are connected with the two sides of the middle part of the back plate 1.

The power assembly comprises a bevel gear 27 connected with one end of the screw rod 18, a worm 28 meshed with the bevel gear 27 and a double-side output driving motor 35 connected with the worm 28; two output shafts of the double-side output driving motor 35 are connected to the worms 28 of the pair of elevation driving units, respectively. The pair of lifting driving units respectively comprise the top ends of the lifting support columns 17, and the bevel gears 27 and the worm 28 are accommodated in a fixed shell cover 32; the fixed housing 32 is adapted to be detachably connected to the part of the backboard 1 above the lifting support column 17; the top end part of the screw rod 18 is sleeved with a pair of rotating bearings 31 and is connected with a fixed shell 32 in a rotating mode, the fixed shell 32 is arranged without influencing the rotation of the screw rod 18, and the helical gear 27 is sleeved on the portion, located between the pair of rotating bearings 31, of the screw rod 18. The bottom of the lifting support column 17 is detachably connected with one end of the back plate 1 far away from the motor cover. The detachable connection here is for example but not limited to a bolt fastening. In addition, the fixed housing 32 and the driving motor 29 respectively included for the pair of elevation driving units are simultaneously covered by the cover plate 31 connected to the side end surface of the back plate 1 facing the movable beam 5, that is, the double-side output driving motor 35 and the fixed housing 32 covered behind the cover plate 31 are not seen from the outer surface of the integral elevation transmission mechanism.

Here has adopted two side output driving motor 35, drive a pair of lift drive unit through two side output driving motor 35, the power pack is still single driver, unnecessary driver is not increased, form the dual drive structure to walking beam 5, compare single drive structure, can obviously improve the holistic bearing capacity of the movable cabinet body that links to each other with walking beam 5, and, a pair of lift drive unit also plays the limiting displacement who drives walking beam 5 lift in-process, reduce the influence of the unbalanced problem of atress to the slide rail that the inside focus skew of the movable cabinet body that links to each other with walking beam 5 caused. And to the great movable cabinet body of bearing capacity, the suitability is stronger, can effectively improve the movable cabinet body in the lift operation in-process stability.

Example 3:

on the basis of the lifting transmission mechanism of embodiment 2, the present embodiment provides a lifting cabinet, including: the elevating transmission mechanism of embodiment 2.

Combine the concrete condition of lifting cabinet, when the movable cabinet of lifting cabinet goes up and down for the wall body, fixed with the wall to lifting drive mechanism's backplate 1 this moment, walking beam 5 then links firmly with the movable cabinet for the in-process that the walking beam 5 goes up and down for backplate 1 activity drives the movable cabinet and goes up and down the activity for the wall.

When the movable cabinet of the lifting cabinet is arranged in a fixed cabinet, and the movable cabinet is lifted relative to the fixed cabinet, the back plate 1 is fixedly connected with the inner wall of the fixed cabinet, and the movable beam 5 is fixedly connected with the movable cabinet.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims

1. The utility model provides a slide rail structure, is applicable to lift drive mechanism, its characterized in that includes:

2. A lifting transmission mechanism suitable for lifting cabinets, comprising a sliding rail structure according to claim 1, and at least one pair of walking beams simultaneously connected to a pair of side sliding rails and at least one middle sliding rail of said sliding rail structure;

3. The lifting transmission mechanism as claimed in claim 2, wherein the connecting plate is an L-shaped structural plate; and

4. The lift drive of any one of claims 2 or 3, wherein the slide rail assembly includes a central slide rail disposed along the wing plate at a central portion of the lateral end of the back plate facing the wing plate.

5. The lift drive of any one of claims 2 or 3, wherein the rail assembly includes a pair of centering rails respectively disposed along the direction of the fin plate on both sides of a middle portion of the side end surface of the back plate facing the fin plate.

6. The lift drive mechanism of claim 5, further comprising at least one lift drive unit disposed between the walking beam and the back plate;

7. The elevating transmission mechanism according to claim 6, wherein a housing cavity is formed in the elevating support column along a longitudinal direction of the elevating support column, and the screw rod is housed in the housing cavity; and

8. The lift drive mechanism of claim 7, wherein the lift drive mechanism includes a lift drive unit disposed between the walking beam and the back plate; the lifting driving unit is connected with the middle part of the back plate;

9. The lift drive mechanism of claim 7, wherein the lift drive mechanism includes a pair of lift drive units disposed between the walking beam and the back plate; the pair of lifting driving units are connected with the two sides of the middle part of the back plate;

10. A lifting cabinet comprising a lifting drive as claimed in any one of claims 2 to 9.