CN214331402U

CN214331402U - Adjustable gapless lead screw lift

Info

Publication number: CN214331402U
Application number: CN202120093645.XU
Authority: CN
Inventors: 王定松
Original assignee: Hangzhou Yige Saike Machinery Co ltd
Current assignee: Hangzhou Yige Saike Machinery Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-10-01
Anticipated expiration: 2031-01-13

Abstract

The utility model discloses an adjustable zero clearance lead screw lift belongs to lift technical field. The utility model discloses a worm and tensioning spare: two ends of the worm are provided with rotating shafts, and the end parts of the rotating shafts penetrate through the side wall of the hood; the tensioning piece comprises a shaft sleeve and a bearing arranged on the inner surface of one end of the shaft sleeve, an elastic element is arranged on the other end surface of the shaft sleeve, the shaft sleeve is sleeved on a rotating shaft, the elastic element abuts against the side wall, and the rotating shaft is matched in the bearing; the worm is meshed with the worm wheel, the worm wheel is meshed with the screw rod, the outer sleeve and the shaft sleeve are integrated on the bearing, an installation groove is formed in the end face of the outer sleeve, balls are installed on the installation groove, an end plate is arranged at one end of the worm, and a circular channel matched with the balls is formed in the surface of the end plate. The utility model discloses a tensioning member release spring's pressure causes the worm to remove towards the direction of motor, and then makes the worm and the worm-gear teeth hug closely, reduces the descending vibrations that take place of lift.

Description

Adjustable gapless lead screw lift

Technical Field

The utility model belongs to the technical field of the lift, especially, relate to an adjustable zero clearance lead screw lift.

Background

Worm wheel lead screw lift wide application is in all kinds of platforms that need reciprocate, like the stage, the corridor of large-scale passenger ship etc, at present, domestic worm wheel lead screw lift adopts the worm gear to slow down, then make the lead screw carry out concertina movement through the trapezoidal thread transmission pair between worm wheel and the lead screw, promote the platform and realize reciprocating of platform, its lift inevitable cause the wearing and tearing of worm and the worm wheel tooth after using, make the lift produce vibrations in the downward production easily, when descending at first, worm and worm wheel tooth rotational speed are different, and there is the clearance between them, and then make worm and worm wheel tooth collision down, cause the whole vibration of lift.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjustable zero clearance lead screw lift, the pressure through tensioning piece release spring causes the worm to remove towards the direction of motor, and then makes the worm and the worm-gear teeth hug closely, reduces the descending vibrations that take place of lift.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to an adjustable zero clearance lead screw lift, including worm and tensioning piece:

two ends of the worm are provided with rotating shafts, and the end parts of the rotating shafts penetrate through the side wall of the hood;

the tensioning piece comprises a shaft sleeve and a bearing arranged on the inner surface of one end of the shaft sleeve, an elastic element is arranged on the other end surface of the shaft sleeve, the shaft sleeve is sleeved on a rotating shaft, the elastic element abuts against the side wall, and the rotating shaft is matched in the bearing;

wherein, the worm is meshed with the worm gear teeth which are meshed with the screw rod.

Further, the outer sleeve and the shaft sleeve on the bearing are integrated, the end face of the outer sleeve is provided with a mounting groove, balls are mounted on the mounting groove, one end of the worm is provided with an end plate, and the surface of the end plate is provided with a circular groove matched with the balls.

Further, the elastic element is a spring.

Furthermore, the end part of the shaft sleeve is provided with a guide shaft, the side wall of the shaft sleeve is provided with a through hole corresponding to the guide shaft, and the guide shaft and the elastic element are positioned on the same end surface of the shaft sleeve.

Furthermore, a rotating drum is installed on the rotating shaft which is not sleeved with the shaft sleeve, and a driving wheel is arranged at the end part of the rotating shaft, which extends out of the side wall.

Further, both ends of the rotary drum are provided with a circle of balls.

The utility model discloses following beneficial effect has:

the utility model discloses tensioning member release spring's pressure causes the worm to remove towards the direction of motor, and then makes the worm and the worm-gear teeth hug closely, reduces the descending vibrations that take place of lift, and wherein, the laminating department of outer sleeve and worm is provided with the ball, and the laminating department of worm and rotary drum is provided with the ball, reduces the frictional force when the worm rotates.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the tension member;

in the drawings, the components represented by the respective reference numerals are listed below:

1-worm gear teeth, 2-screw rod, 3-side wall, 4-tension piece, 5-worm, 6-rotating shaft, 7-driving wheel, 8-rotating drum, 9-elastic element, 401-shaft sleeve, 402-bearing, 403-mounting groove, 404-ball and 405-guide shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements 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.

Referring to fig. 1-2, the present invention relates to an adjustable gapless screw rod lifter, which comprises a worm 5, a tension member 4, a worm gear 1 engaged with the worm 5, a screw rod 2 engaged with the worm gear 1, and a motor as a power source, wherein an output end of the motor is connected to a rotating shaft of the worm 5, wherein the worm 5 and the worm gear 1 are disposed inside a hood, the motor is installed outside the hood and fixed on a bottom plate of the hood, and a gear engaged with a transmission wheel 7 is installed on the motor.

Specifically, the method comprises the following steps:

the worm 5 has a shaft 6 at each end, the end of which extends through the side wall 3 of the hood.

The tension member 4 includes a sleeve 401 and a bearing 402 provided on an inner surface of one end of the sleeve 401, and an elastic member 9 is mounted on the other end surface of the sleeve 401.

The shaft sleeve 401 is sleeved on a rotating shaft 6, the elastic element 9 abuts against the side wall 3, the rotating shaft 6 is matched in the bearing 402, the preferable elastic element 9 is a spring, a groove for placing the spring 9 is formed in the end portion of the corresponding shaft sleeve 401, one end of the spring 9 is welded at the bottom of the groove, and the other end of the spring 9 is connected to the side wall 3.

The outer sleeve and the shaft sleeve 401 on the bearing 402 are an integral piece, the end surface of the outer sleeve is provided with a mounting groove 403, a ball 404 is mounted on the mounting groove 403, one end of the worm 5 is provided with an end plate, the surface of the end plate is provided with a circular groove matched with the ball 404, the inner sleeve of the bearing 402 is in clearance fit with the rotating shaft 6, the end of the shaft sleeve 401 is provided with a guide shaft 405, the side wall 3 is provided with a through hole corresponding to the guide shaft 405, and the guide shaft 405 and the elastic element 9 are located on the same end surface of the shaft sleeve 401.

Further, a rotating shaft 6 which is not sleeved with a bushing 401 is provided with a rotating drum 8, the end part of the rotating shaft 6 extending out of the side wall 3 is provided with a driving wheel 7, preferably, both ends of the rotating drum 8 are provided with a circle of balls 404, and the end surfaces of the side wall 3 and the worm 5 are provided with annular grooves corresponding to the balls 404.

Contact in lateral wall 3 through tensioning 4 through worm 5, its tensioning 4 is less than lateral wall 3 through elastic element 9 and makes worm 5 can have certain displacement space in the aircraft bonnet, after working a period, worm 5 and worm wheel tooth 1 produce certain wearing and tearing, thereby when the lift descends, its initial stage motor drives its rotational speed that worm 5 is greater than, certain clearance will take place for worm 5 and worm wheel tooth 1 tooth, the pressure through tensioning 4 release spring causes worm 5 to move towards the direction of motor, and then make worm 5 and worm wheel tooth 1 tooth hug closely, reduce and then because wearing and tearing, speed is nonuniform and causes worm 5 and worm wheel tooth 1 collision to descend.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable slackless lead screw elevator, comprising:

the two ends of the worm (5) are provided with rotating shafts (6), and the end parts of the rotating shafts penetrate through the side wall (3) of the hood;

the tensioning part (4), the tensioning part (4) includes the axle sleeve (401) and locates the bearing (402) of one end internal surface of axle sleeve (401), install the elastic element (9) on another terminal surface of axle sleeve (401), the axle sleeve (401) is located on a pivot (6) cover, the elastic element (9) supports against the sidewall (3), the pivot (6) cooperates in the bearing (402);

wherein the worm (5) is meshed with the worm gear teeth (1), and the worm gear teeth (1) are meshed with the screw rod (2).

2. An adjustable slackless screw jack according to claim 1, characterized in that the outer sleeve and the sleeve (401) on the bearing (402) are one piece, the end surface of the outer sleeve is provided with a mounting groove (403), the mounting groove (403) is provided with balls (404), one end of the worm (5) is provided with an end plate, the surface of the end plate is provided with a circular groove for fitting the balls (404).

3. An adjustable slackless screw jack according to claim 2, characterized in that the resilient member (9) is a spring.

4. An adjustable slackless screw jack according to any of claims 1-3, characterized in that the end of the sleeve (401) is provided with a guide shaft (405), and the side wall is provided with a through hole corresponding to the guide shaft (405), and the guide shaft (405) and the elastic member (9) are located on the same end surface of the sleeve (401).

5. An adjustable slackless screw jack according to claim 4, characterized in that the shaft (6) which is not provided with a sleeve (401) is provided with a drum (8), and the end of the shaft (6) which extends beyond the side wall (3) is provided with a driving wheel (7).

6. An adjustable slackless screw jack according to claim 5, characterized in that a ring of balls (404) is mounted at both ends of the drum (8).