CN-224226557-U - Anti-unbalanced load three-section lifting column structure with double-wire-rod synchronous thrust

Abstract

The utility model discloses an anti-unbalanced load three-section lifting column structure with double screw rods and synchronous thrust, which relates to the technical field of mechanical transmission and control, and a lower fixing plate is used as a basic supporting part of a device; in the utility model, the power of the motor is transmitted to the reduction gearbox, and after the reduction and the torque increase, the power is transmitted to the gear box through the transmission gear set to drive the horizontal parallel left-handed ball screw and right-handed ball screw to synchronously rotate. Ejector rod threaded connection makes ejector rod rectilinear motion at right-hand ball screw outer wall, and two screw synchronous reverse rotations realize both sides and go up and down simultaneously, promotes or the pulling load, compares with screw and chain structure, and this double screw structure does not have the chain, has avoided the clearance problem that the chain wearing and tearing lead to, can guarantee lifting column steady operation, reduces the goods risk of dropping. Meanwhile, the design of the hollow screw rod is abandoned, two solid screw rods are adopted, the strength is higher, the volume and the weight are smaller, the transmission efficiency is higher, continuous work can be carried out in an automatic production line, and the production efficiency is improved.

Inventors

• XU JIWEI

Assignees

• 深圳市鼎赢智能装备有限公司

Dates

Publication Date

20260512

Application Date

20250625

Claims (8)

1. 1. The utility model provides an anti unbalanced load three-section elevating column structure of synchronous thrust of two poles which characterized in that: a lower fixing plate (1) as a base support member of the apparatus; The left-handed ball screw (2) and the right-handed ball screw (7) are horizontally arranged in parallel, and the left-handed ball screw (2) is rotationally connected with the lower fixed plate (1); a gear case fixing plate (3) for fixing the gear case; A transmission gear set (4) arranged in the gear box and used for transmitting power; The device comprises a reduction gearbox (5) and a motor (6), wherein the motor (6) is arranged right above the reduction gearbox (5) and is in transmission connection with the reduction gearbox (5), and the reduction gearbox (5) is connected with a gear box through a transmission gear set (4) so as to drive a left-handed ball screw (2) and a right-handed ball screw (7); The ejector rod (8) is in threaded connection with the outer wall of the right-handed ball screw (7).
2. 2. The unbalanced load-resistant three-section lifting column structure with double-screw synchronous thrust according to claim 1 is characterized in that one end of a push rod (8) far away from a right-handed ball screw (7) is fixedly connected with an upper fixing plate (9), and the right-handed ball screw (7) is rotatably connected to the outer wall of a gear box.
3. 3. The unbalanced load resistant three-section lifting column structure with double screw synchronous thrust according to claim 2 is characterized in that the number of the aluminum cylinders (10) is three, the three aluminum cylinders (10) are sequentially sleeved in the axial direction, and the inner diameter size is sequentially reduced from bottom to top to form a nested structure.
4. 4. The unbalanced load resistant three-section lifting column structure with double wire rods and synchronous thrust as claimed in claim 3 is characterized in that sliding grooves (11) are formed in the outer wall of the aluminum cylinder (10).
5. 5. The unbalanced load three-section lifting column structure with double-wire rod synchronous thrust according to claim 4, wherein the sliding groove (11) of each aluminum cylinder (10) is mutually matched with the adjacent aluminum cylinders (10).
6. 6. The unbalanced load resistant three-section lifting column structure with double wire rods and synchronous thrust according to claim 5 is characterized in that three aluminum cylinders (10) are sleeved in pairs, sliding grooves (11) of the aluminum cylinders (10) are matched, adjacent aluminum cylinders keep relatively linear sliding, and the sliding process is mutually limited.
7. 7. The unbalanced load three-section lifting column structure with double screw synchronous thrust according to claim 6, wherein the transmission gear set (4) consists of three gears meshed with each other, one gear is fixedly arranged on the outer wall of the left-hand ball screw (2), the other gear is fixedly arranged at one end of the right-hand ball screw (7) far away from the ejector rod (8), the last gear is arranged at one side of the reduction gearbox (5), and each gear is meshed with the adjacent gears.
8. 8. The unbalanced load three-section lifting column structure with double-wire rod synchronous thrust according to claim 7, wherein the upper fixing plate (9) is arranged at the top of an aluminum cylinder (10) with the smallest inner diameter, and the lower fixing plate (1) is arranged at the bottom of an aluminum cylinder (10) with the largest inner diameter of the aluminum cylinder (10).

Description

Anti-unbalanced load three-section lifting column structure with double-wire-rod synchronous thrust Technical Field The utility model relates to the technical field of mechanical transmission and control, in particular to an anti-unbalanced load three-section lifting column structure with double screw rods and synchronous thrust. Background Lifting equipment plays a vital role in various fields of industrial automation, logistics transportation, intelligent storage, security protection and the like. The three-section lifting column is used as a common lifting device and is widely applied to scenes needing height adjustment. The traditional three-section lifting column mainly adopts two transmission structures of a screw rod and a chain or a screw rod and a hollow screw rod. The transmission structure of the screw rod and the chain can cause the problem of gap increase due to abrasion after long-term operation of the chain. Such gaps can cause significant rattle during downward travel of the lifting column when the lifting column is subjected to a biasing load. For example, in a logistics warehouse, when the lifting column with the structure is used for carrying goods, if the goods placement position is slightly deviated to generate deflection load, the lifting column can shake, so that the stability of carrying the goods is affected, and the goods can be possibly dropped to cause loss. The transmission structure of the screw rod and the hollow screw rod has the defect that the hollow screw rod is larger in outer diameter because the solid screw rod is required to be accommodated in the hollow screw rod, so that the whole volume and the weight are increased, and the transmission efficiency is low. The hollow screw rod has relatively low strength, is easy to deform when bearing a large load, and cannot meet the requirement of continuous work. Taking a frequently used automatic production line as an example, the lifting column adopting the structure needs to be frequently stopped for cooling, and can rest for three minutes in one minute, thereby seriously affecting the production efficiency. Disclosure of utility model The utility model aims to provide an anti-unbalanced load three-section lifting column structure with double screw rods and synchronous thrust so as to solve the problems in the prior art. The utility model provides an anti-unbalanced load three-section lifting column structure with double screw rods for synchronous thrust, which is used as a basic supporting component of a device, a left-handed ball screw and a right-handed ball screw which are horizontally arranged in parallel, wherein the left-handed ball screw is rotationally connected with the lower fixing plate, a gear box fixing plate is used for fixing a gear box, a transmission gear set is arranged in the gear box and used for transmitting power, a reduction box and a motor are arranged right above the reduction box and are in transmission connection with the reduction box, the reduction box is connected with the gear box through the transmission gear set so as to drive the left-handed ball screw and the right-handed ball screw, and a push rod is in threaded connection with the outer wall of the right-handed ball screw. Further, one end of the ejector rod, which is far away from the right-handed ball screw, is fixedly connected with an upper fixing plate, and the right-handed ball screw is rotationally connected to the outer wall of the gear box. Further, the number of the aluminum cylinders is three, the three aluminum cylinders are sequentially sleeved along the axial direction, and the inner diameter size is sequentially reduced from bottom to top to form a nested structure. Further, the outer walls of the aluminum cylinders are provided with sliding grooves. Further, the sliding groove of each aluminum cylinder is mutually matched with the adjacent aluminum cylinder. Further, three aluminum cylinders are sleeved in pairs, sliding grooves of all the aluminum cylinders are matched, adjacent aluminum cylinders keep relatively and linearly sliding, and the sliding process is mutually limited. Further, the transmission gear set consists of three gears meshed with each other, one gear is fixedly arranged on the outer wall of the left-handed ball screw, the other gear is fixedly arranged at one end of the right-handed ball screw, which is far away from the ejector rod, the last gear is arranged at one side of the reduction gearbox, and each gear is meshed with the adjacent gear. Further, the upper fixing plate is arranged at the top of the aluminum cylinder with the smallest inner diameter, and the lower fixing plate is arranged at the bottom of the aluminum cylinder with the largest inner diameter. Compared with the prior art, the utility model has the beneficial effects that: 1. In the utility model, after the motor is started, power is transmitted to the reduction gearbox, and after the reduction and torque increase, the power is transm