CN221695661U - Lifting device capable of stopping at will - Google Patents

Abstract

The utility model discloses a lifting device that can be parked arbitrarily, including a bearing unit for bearing a cutting tray, a plurality of lifting units symmetrically arranged on both sides of the bearing unit, and a driving unit for driving the plurality of lifting units to drive the bearing unit to perform lifting movement; the bearing unit includes a plurality of parallel and spaced beams, and lifting units are respectively arranged at both ends of each beam. The utility model arranges lifting units at both ends of the beam, and the forward and reverse rotation of the screw rod of the lifting unit drives the synchronization of the beam movement, and the vertical lifting of the beam is ensured by the guide mechanism, thereby improving the lifting stability, and the direct transmission structure of the driving unit and the lifting unit is simple and easy to install, with a fast transmission speed, the lifting unit can be stopped or started at any time according to demand, the lifting response speed is fast, and the beam can be kept stationary at any position during the lifting stroke.

Description

Lifting device that can stop at any place

Technical Field

The utility model relates to the technical field of cutting machine equipment, in particular to a lifting device which can stop arbitrarily.

Background Art

With the rapid development of mechanical processing, intelligent production lines such as steel plate cutting machines and automatic sorting will become the development direction of smart factories in the future. The automated cutting, sorting and palletizing intelligent production lines in smart factories will greatly enhance manufacturing production capabilities.

The Chinese invention patent "Laser Cutting Machine Lifting Workbench" (publication number CN107363415A) includes a crank lifting mechanism and a lifting frame, a pair of parallel transmission shafts are mounted on the lifting frame, and a driven sprocket is sleeved on each transmission shaft; a driving mechanism and a driving shaft are provided between the pair of transmission shafts on the lifting frame, and the driving mechanism can drive the driving shaft to rotate in the forward and reverse directions; a double row of driving sprockets are fixed on the driving shaft, wherein a transmission chain is provided between each driving sprocket and each driven sprocket to connect the driving sprocket with the driven sprocket. The lifting workbench provided by this invention patent is a single motor that controls the rotational motion of four parallel cranks at the same time, so in order to ensure the synchronous motion of the four groups of cranks, the motor position and the matching degree of the chain assembly are required to be relatively high; in addition, due to the use of chain and sprocket drive, the driving process reacts slowly, resulting in a failure to respond quickly when it is necessary to remain stationary at any position within the lifting stroke.

Summary of the invention

In order to overcome the above defects, the utility model provides a lifting device that can stop at any position. It has a simple structure and reliable operation. It can not only realize the up and down movement of the cutting tray, but also keep the cutting tray stationary at any position within the travel of the lifting unit.

The technical solution adopted by the utility model to solve the technical problem is: to provide a lifting device that can be parked arbitrarily, the lifting device comprises a bearing unit for bearing a cutting tray, a plurality of lifting units symmetrically arranged on both sides of the bearing unit, and a driving unit for driving the plurality of lifting units to drive the bearing units to perform lifting movements;

The bearing unit comprises a plurality of parallel and spaced beams, and the lifting units are respectively disposed at both ends of each beam;

The lifting unit includes a supporting base plate and a lift arranged on the supporting base plate, the lead screw of the lift is arranged in the vertical direction, and the worm is arranged in the horizontal direction; the two ends of the crossbeam are movably connected to the lead screw of the lift through a guide mechanism, and the driving unit is connected to the worm gear of the lift.

As a further improvement of the utility model, the guide mechanism includes two guide brackets arranged on the supporting base plate, and a movable part movably arranged on the screw rod and slidably connected to the two guide brackets, the two guide brackets are symmetrically arranged on both sides of the elevator and arranged in the same direction as the crossbeam, and the end of the crossbeam is fixedly connected to the movable part.

As a further improvement of the utility model, the movable part is threadedly connected to the screw through a screw nut, and the movable part is provided with V-shaped bearings rotating around a horizontal axis on both sides of the guide bracket, and a V-shaped guide rail matching the V-shaped bearing is provided on the relatively close side of the two guide brackets.

As a further improvement of the utility model, the upper parts of the two guide brackets are connected with a top plate, and the top of the screw rod is fixedly connected to the top plate via a square bearing.

As a further improvement of the present invention, a transmission shaft is provided between two adjacent lifting units located on the same side of the carrying unit, and both ends of each transmission shaft are connected to the worm gear of the elevators of the two adjacent lifting units through a transmission coupling.

As a further improvement of the present invention, the two guide brackets are respectively mounted on the support base plate through support bases, and the support base is provided with a cavity for the transmission shaft to pass through.

As a further improvement of the present invention, the driving unit includes two servo motors, which are located at two ends of the outermost beam and are respectively connected to the elevators of the lifting units at two ends of the beam.

As a further improvement of the present invention, the driving shaft of the servo motor is connected to the worm gear of the elevator through a driving coupling.

As a further improvement of the present invention, the two servo motors are respectively fixed on the supporting base plate through ferry plates.

The beneficial effects of the utility model are as follows: by respectively arranging lifting units at both ends of the beam, the forward and reverse rotation of the screw rod of the lifting unit drives the synchronization of the movement of the beam, and the vertical lifting of the beam is guaranteed by the guide mechanism, thereby improving the lifting stability, and the direct transmission structure between the driving unit and the lifting unit is simple and easy to install, with a fast transmission speed, the lifting unit can be stopped or started at any time according to demand, the lifting response speed is fast, and the beam can be kept stationary at any position during the lifting stroke.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

FIG2 is a schematic structural diagram of the utility model from another perspective;

FIG3 is a partial enlarged schematic diagram of point A in FIG1 of the present utility model;

FIG. 4 is a partial enlarged schematic diagram of point B in FIG. 2 of the present invention.

Combined with the accompanying drawings, the following description is given:

1. Carrying unit; 11. Crossbeam; 2. Lifting unit; 21. Support base plate; 22. Lifter; 221. Screw; 222. Worm; 23. Guide mechanism; 231. Guide bracket; 2311. V-shaped guide rail; 232. Moving part; 2321. Screw nut; 2322. V-shaped bearing; 233. Top plate; 234. Square bearing; 235. Support base; 2351. Cavity; 24. Drive shaft; 241. Drive coupling; 3. Drive unit; 31. Servo motor; 311. Drive coupling; 32. Ferry.

DETAILED DESCRIPTION

A preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.

1 to 4 , the utility model provides an embodiment of a lifting device that can be parked arbitrarily, the lifting device comprising a carrying unit 1 for carrying a cutting tray, a plurality of lifting units 2 symmetrically arranged on both sides of the carrying unit 1, and a driving unit 3 for driving the plurality of lifting units 2 to drive the carrying unit 1 to perform lifting movements; wherein the symmetrical arrangement of the lifting units 2 ensures that the supporting force on both sides of the carrying unit 1 is equal, ensures the vertical lifting of the carrying unit 1, and thereby ensures the stability of the up and down movement of the cutting tray.

Specifically, the bearing unit 1 includes a plurality of parallel and spaced beams 11 , and each beam 11 is provided with a lifting unit 2 at both ends. The driving unit 3 drives the lifting unit 2 to make both ends of the beam 11 rise or fall synchronously.

In this embodiment, three groups of spaced beams 11 are provided, and the two ends of each corresponding beam 11 are connected to the lifting unit 2, so this embodiment has six lifting units 2, and the six lifting units 2 are evenly arranged to form six lifting points, and the six lifting points are symmetrically arranged in pairs, and beams 11 are provided on two symmetrical lifting points, and the beams 11 move up and down with the lifting of the lifting unit 2. In actual use, the number of lifting points can be selected according to needs, and the corresponding drive unit can be selected.

Furthermore, the lifting unit 2 includes a supporting base plate 21 and a lift 22 arranged on the supporting base plate 21, the screw rod 221 of the lift 22 is arranged in the vertical direction, and the worm gear 222 is arranged in the horizontal direction; the two ends of the crossbeam 11 are respectively movably connected with the screw rod 221 of the lift 22 through a guide mechanism 23, and the driving unit 3 is transmission-connected with the worm gear 222 of the lift 22, and the screw rod 221 is rotated by driving the worm gear 222 to rotate, thereby causing the guide mechanism 23 connected to the screw rod 221 to move up and down along the screw rod 221.

The guide mechanism 23 includes two guide brackets 231 disposed on the support bottom plate 21, and a movable member 232 movably disposed on the screw rod 221 and slidably connected to the two guide brackets 231. The two guide brackets 231 are symmetrically disposed on both sides of the elevator 22 and arranged in the same direction as the crossbeam 11. The upper parts of the two guide brackets 231 are connected to a top plate 233, and the top of the screw rod 221 is fixedly connected to the top plate 233 through a square bearing 234.

Specifically, the two guide brackets 231 and the top plate 233 form a door-shaped bracket, and the lifter 22 is located in the center of the two guide brackets 231. The movable member 232 is threadedly connected to the screw rod 221 through the screw nut 2321. When the screw rod 221 is forward or reversed, the screw nut 2321 can rotate relative to the screw rod 221 and move on the screw rod 221, thereby driving the crossbeam 11 to move up and down.

Furthermore, the movable part 232 is provided with V-shaped bearings 2322 rotating around a horizontal axis on both sides of the guide bracket 231, and the relatively close sides of the two guide brackets 231 are provided with V-shaped guide rails 2311 matching the V-shaped bearings 2322. The movable part 232 is closely attached to the V-shaped guide rails 2311 of the guide bracket 23 through the V-shaped grooves of the V-shaped bearings 2322 on both sides, so as to guide the movable part 232, and also ensure that the movable part 232 always maintains a vertical state and moves up and down along the central axis of the screw rod 221, so as to prevent the screw rod nut 2321 from being skewed and causing the movable part to be blocked from rising and falling.

Furthermore, a transmission shaft 24 is provided between two adjacent lifting units 2 located on the same side of the load-bearing unit 1, and the two ends of each transmission shaft 24 are respectively connected to the worm 222 of the elevator 22 of the two adjacent lifting units 2 through a transmission coupling 241. At the same time, servo motors 31 are provided on both sides of the load-bearing unit 1, and the three lifting units 2 located on the same side of the load-bearing unit 1 are driven by one servo motor 31. The adjacent lifting units 2 are connected through the transmission shaft 24, so that a single motor can control the elevators 22 of the three lifting units 2 at the same time, and the screws 221 of the three elevators 22 are simultaneously reversed through the forward and reverse rotation of the transmission shaft 24 to realize power transmission and improve lifting stability. In addition, the servo motor 31 is directly driven by the worm 222 of the elevator 22, and the transmission structure is simple and easy to install, which improves the transmission speed, so that the lifting unit 2 can be stopped or started at any time according to demand, and the lifting response speed is fast, and it can remain stationary within the lifting stroke.

To sum up, the lifting device that can be stopped arbitrarily provided by the utility model has lifting units respectively arranged at both ends of the beam. The forward and reverse rotation of the screw rod of the lifting unit drives the synchronization of the movement of the beam, and the vertical lifting of the beam is ensured by the guide mechanism, thereby improving the lifting stability. The transmission structure is simple and easy to install, and the transmission speed is fast. The lifting unit can be stopped or started at any time according to needs, the lifting response speed is fast, and the beam can be kept stationary at any position during the lifting stroke.

In the above description, many specific details are described to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited by the specific implementation disclosed above. At the same time, any person familiar with the technical field can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims (9)

1. A lifting device capable of stopping at any position, characterized in that: the lifting device comprises a bearing unit (1) for bearing a cutting tray, a plurality of lifting units (2) symmetrically arranged on both sides of the bearing unit (1), and a driving unit (3) for driving the plurality of lifting units (2) to drive the bearing unit (1) to perform lifting motion; The bearing unit (1) comprises a plurality of parallel and spaced-apart crossbeams (11), and the lifting units (2) are respectively provided at two ends of each crossbeam (11); The lifting unit (2) comprises a supporting base plate (21) and a lift (22) arranged on the supporting base plate (21); the screw rod (221) of the lift (22) is arranged in a vertical direction, and the worm gear (222) is arranged in a horizontal direction; the two ends of the crossbeam (11) are movably connected to the screw rod (221) of the lift (22) through a guide mechanism (23), and the driving unit (3) is drivingly connected to the worm gear (222) of the lift (22). 2. The lifting device that can stop at any position according to claim 1 is characterized in that: the guide mechanism (23) includes two guide brackets (231) arranged on the supporting base plate (21), and a movable member (232) movably arranged on the screw rod (221) and slidably connected to the two guide brackets (231), the two guide brackets (231) are symmetrically arranged on both sides of the elevator (22) and arranged in the same direction as the cross beam (11), and the end of the cross beam (11) is fixedly connected to the movable member (232). 3. The lifting device capable of stopping at any position according to claim 2 is characterized in that: the movable part (232) is threadedly connected to the screw (221) through a screw nut (2321), and the movable part (232) is provided with V-shaped bearings (2322) rotating around a horizontal axis on both sides facing the guide bracket (231), and a V-shaped guide rail (2311) matching the V-shaped bearing (2322) is provided on the relatively close side of the two guide brackets (231). 4. The lifting device capable of stopping at any position according to claim 3 is characterized in that: the upper parts of the two guide brackets (231) are connected with a top plate (233), and the top of the screw rod (221) is fixedly connected to the top plate (233) via a square bearing (234). 5. The lifting device that can stop at any position according to claim 4 is characterized in that: a transmission shaft (24) is respectively provided between two adjacent lifting units (2) located on the same side of the carrying unit (1), and both ends of each transmission shaft (24) are respectively connected to the worm gear (222) of the elevator (22) of the two adjacent lifting units (2) through a transmission coupling (241). 6. The lifting device capable of stopping at any position according to claim 5 is characterized in that: the two guide brackets (231) are respectively mounted on the supporting base plate (21) through supporting bases (235), and the supporting base (235) is provided with a cavity (2351) for the transmission shaft (24) to pass through. 7. The lifting device capable of stopping at any position according to claim 6 is characterized in that: the driving unit (3) comprises two servo motors (31), the two servo motors (31) are located at the two ends of the outermost beam (11), and are respectively connected to the elevators (22) of the lifting units (2) at the two ends of the beam (11) by transmission. 8. The lifting device capable of stopping at any position according to claim 7, characterized in that the driving shaft of the servo motor (31) is connected to the worm (222) of the lifting machine (22) through a driving coupling (311). 9. The lifting device capable of stopping at any position according to claim 8, characterized in that the two servo motors (31) are respectively fixed on the supporting bottom plate (21) through bridge plates (32).