CN-117886249-B - SWL screw rod lifter

CN117886249BCN 117886249 BCN117886249 BCN 117886249BCN-117886249-B

Abstract

The invention belongs to the technical field of screw rod lifters, and relates to a SWL screw rod lifter, which comprises a base, an outer shell arranged on the base and an inner shell arranged in the outer shell, wherein a worm and gear structure is arranged in the inner shell, the center of a worm wheel in the worm and gear structure is connected with a screw rod, one end of a worm in the worm and gear structure is provided with a movable gear, an input shaft is arranged on the outer shell, a fixed gear for meshing the movable gear is arranged on the input shaft, and the inner shell is rotationally connected in the outer shell around the axis of the fixed gear. According to the invention, under the condition that the worm gear box body is fixed, the screw rod of the lifter can incline at a certain angle, so that lifting in different directions is realized, and the problems of fixed lifting angle and singleness of the existing SWL screw rod lifter are solved.

Inventors

ZHOU JIAYI
XIONG GUOCHUAN
ZHANG YONG
Zhan Lihui
LI YING
XIONG XIAORONG

Assignees

重庆钢铁股份有限公司

Dates

Publication Date: 20260508
Application Date: 20240116

Claims (10)

1. The SWL screw rod lifter is characterized by comprising a base, an outer shell arranged on the base and an inner shell arranged in the outer shell, wherein a worm gear structure is arranged in the inner shell, the center of a worm wheel in the worm gear structure is connected with a screw rod, one end of a worm in the worm gear structure is provided with a movable gear, an input shaft is arranged on the outer shell, a fixed gear for meshing the movable gear is arranged on the input shaft, and the inner shell is rotationally connected in the outer shell around the axis of the fixed gear.
2. The SWL screw lifter as in claim 1, wherein an inner housing fixing plate perpendicular to the axis of the fixed gear is provided on the inner housing, an outer housing fixing plate matching with the inner housing fixing plate is provided on the outer housing, the outer housing fixing plate and the inner housing fixing plate are each provided with at least one positioning hole provided along the rotation direction of the inner housing, and the inner housing fixing plate and the outer housing fixing plate are connected by bolts penetrating through the positioning holes to limit the rotation of the inner housing.
3. The SWL screw lifter as claimed in claim 2, wherein said inner housing fixing plate has a positioning hole, and said outer housing fixing plate has a plurality of positioning holes arranged along a rotation direction of said inner housing.
4. The SWL screw lifter as claimed in claim 2, wherein said outer housing fixing plate has a positioning hole, and said inner housing fixing plate has a plurality of positioning holes arranged in a rotation direction of said inner housing.
5. The SWL screw lifter as in claim 2, wherein the inner shell is provided with an inner shell fixing plate on both sides thereof, a left inner shell fixing plate and a right inner shell fixing plate, respectively, and the outer shell is provided with a left outer shell fixing plate and a right outer shell fixing plate, respectively.
6. The SWL screw lifter as claimed in claim 1, wherein the upper and lower end surfaces of the screw are also movably connected with a lower flange plate and an upper flange plate.
7. The SWL screw lifter as in claim 6, wherein the lower flange and the upper flange are movably connected to the screw by pins, and the direction of the pins penetrating the screw is consistent with the axial direction of the fixed gear.
8. The SWL screw lifter as in claim 6, wherein one end of the screw is connected to the lower flange after penetrating through the base, and the through hole of the base for penetrating through the screw is a bar-shaped hole perpendicular to the axis of the fixed gear.
9. The SWL screw lifter as claimed in claim 1, wherein first bearings are further sleeved on the screw on both sides of the worm wheel.
10. The SWL screw lifter as claimed in claim 1, wherein said worm is mounted within said inner housing by a second bearing, and said input shaft is mounted on said outer housing by a third bearing.

Description

SWL screw rod lifter Technical Field The invention belongs to the technical field of screw rod lifters, and relates to an SWL screw rod lifter. Background SWL screw lifts are a common lifting device, mainly used for lifting and lowering of goods in various workplaces. The device is mainly characterized by compact structure, simple and convenient operation, convenient maintenance and long service life. The working principle of the SWL screw rod lifter is that a worm gear reducer is driven by a motor, and the screw rod is driven to rotate through rotation of a worm gear, so that lifting movement of the lifter is realized. The elevator has the advantages of stable and accurate lifting movement, low noise, low vibration and little influence on the working environment. SWL screw lifts are widely used in various workplaces such as warehouses, factories, yards, etc. for loading and unloading goods, equipment maintenance, construction, etc. In addition, because of its simple structure, it is convenient to maintain, also commonly used as the elevating system of equipment such as elevator, escalator. However, SWL lead screw elevators also have some problems. For example, current SWL screw lifts are capable of reciprocating lifting movements only in a direction perpendicular to the housing chassis, with the screws often being vertically disposed. For certain specific places, the heavy objects need to be lifted under a certain angle, or the lifting inclination angle is frequently changed, so that the current SWL screw rod lifter cannot well meet the use condition. Disclosure of Invention In view of the above, the present invention aims to provide an SWL screw lifter, in which the screw of the lifter can be inclined at a certain angle under the condition that the worm gear box is fixed, so as to realize lifting in different directions, so as to solve the problems of fixed lifting angle and singleness of the current SWL screw lifter. In order to achieve the above purpose, the present invention provides the following technical solutions: The SWL screw rod lifter comprises a base, an outer shell arranged on the base and an inner shell arranged in the outer shell, wherein a worm gear structure is arranged in the inner shell, the center of a worm wheel in the worm gear structure is connected with a screw rod, one end of a worm in the worm gear structure is provided with a movable gear, an input shaft is arranged on the outer shell, a fixed gear used for meshing the movable gear is arranged on the input shaft, and the inner shell is rotationally connected in the outer shell around the axis of the fixed gear. Further, an inner shell fixing plate perpendicular to the axis of the fixed gear is arranged on the inner shell, an outer shell fixing plate matched with the inner shell fixing plate is arranged on the outer shell, the outer shell fixing plate and the inner shell fixing plate are both provided with at least one positioning hole arranged along the rotation direction of the inner shell, and the inner shell fixing plate and the outer shell fixing plate are connected through bolts penetrating through the positioning holes so as to limit the rotation of the inner shell. Further, the inner shell fixing plate is provided with a positioning hole, and the outer shell fixing plate is provided with a plurality of positioning holes arranged along the rotation direction of the inner shell. Further, the outer shell fixing plate is provided with a positioning hole, and the inner shell fixing plate is provided with a plurality of positioning holes arranged along the rotation direction of the inner shell. Further, inner shell fixing plates are arranged on two sides of the inner shell, namely a left inner shell fixing plate and a right inner shell fixing plate, and a corresponding left outer shell fixing plate and a corresponding right outer shell fixing plate are arranged on the outer shell. Further, the upper end face and the lower end face of the screw rod are also movably connected with a lower flange plate and an upper flange plate. Further, the lower flange plate and the upper flange plate are movably connected with the screw rod through pins, and the direction of the pins penetrating through the screw rod is consistent with the axial direction of the fixed gear. Further, one end of the screw rod penetrates through the base and then is connected with the lower flange plate, and the through hole for penetrating through the screw rod is a strip-shaped hole perpendicular to the axis of the fixed gear. Further, the screw rod is also sleeved with first bearings positioned at two sides of the turbine. Further, the worm is mounted within the inner housing by a second bearing and the input shaft is mounted on the outer housing by a third bearing. The invention has the beneficial effects that: According to the SWL screw rod lifter provided by the invention, the worm gear and worm structure is arranged in the inner shell rotationally connected