CN215846735U

CN215846735U - Locking mechanism of lifting screw rod

Info

Publication number: CN215846735U
Application number: CN202122369884.6U
Authority: CN
Inventors: 朱振强; 王新
Original assignee: Wuxi Jinghua Heavy Industry Equipment Manufacturing Co Ltd
Current assignee: Wuxi Jinghua Heavy Industry Equipment Manufacturing Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-18
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a locking mechanism of a lifting screw rod, which comprises a round nut and a first bolt, wherein a shaft sleeve is arranged above the round nut, a first thrust ball bearing is arranged above the shaft sleeve, a first adjusting pad is arranged above the first thrust ball bearing, a sealing ring and a screw rod shaft are sequentially arranged outside the first adjusting pad from inside to outside, a box body is arranged outside the sealing ring, a second adjusting pad is arranged below the inner wall of the box body, and a second thrust ball bearing is arranged above the second adjusting pad. Compared with the existing common locking mechanism, the locking mechanism of the lifting screw rod has the advantages that the first nut is screwed on the screw rod shaft, the second nut is connected above the first nut in parallel, the first nut and the second nut share the first bolt and are fastened together, the pressing plate is covered above the second nut and presses the first bolt, the pressing plate is fixed at the end of the screw rod shaft through the second bolt, the locking mechanism has a double pre-tightening safety effect, the possibility that the first nut and the second nut are loosened is reduced, and the precision of the screw rod is guaranteed while the safety performance of a machine tool is improved.

Description

Locking mechanism of lifting screw rod

Technical Field

The utility model relates to the technical field of lifting screw rods, in particular to a locking mechanism of a lifting screw rod.

Background

The lifting screw rod can be widely used in various industries such as machinery, metallurgy, construction, chemical engineering, medical treatment, cultural health and the like, can accurately control and adjust the lifting or pushing height according to a certain program, can be directly driven by a motor or other power, and can also be manually operated, and a locking mechanism is required to be used during the assembly of the lifting screw rod to prevent the lifting screw rod from loosening.

The existing locking mechanism is easy to loosen the fastener for a long time, so that the lifting screw rod is loosened, the fault is easy to cause, the use requirements of people cannot be well met, and technical innovation is performed on the basis of the existing locking mechanism according to the condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a locking mechanism of a lifting screw rod, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a locking mechanism of a lifting screw rod comprises a round nut and a first bolt, wherein a shaft sleeve is arranged above the round nut, a first thrust ball bearing is arranged above the shaft sleeve, a first adjusting pad is arranged above the first thrust ball bearing, and the outer part of the first adjusting pad is sequentially provided with a sealing ring and a screw rod shaft from inside to outside, a box body is arranged outside the sealing ring, a second adjusting pad is arranged below the inner wall of the box body, a second thrust ball bearing is arranged above the second adjusting pad, a worm wheel is arranged above the second thrust ball bearing, a first nut is arranged above the worm wheel, a second nut is arranged above the first nut, a first bolt is arranged outside the second nut, a second bolt is arranged at one end of a screw rod shaft, and the outside of the bolt II is provided with a pressing plate, the cover plate is arranged above the outside of the box body, the bolt III is arranged outside the cover plate, and one side of the outside of the box body is fixedly provided with a lubricating component for lubricating.

Preferably, the first nut is threadedly connected to the screw shaft, and the screw shaft is threadedly connected to the second nut.

Preferably, the upper surface of the second nut is attached to the lower surface of the pressure plate, and the pressure plate is fixedly connected with the screw shaft through the second bolt.

Preferably, the cover plate is fixedly connected with the box body through a third bolt, and the central axis of the cover plate coincides with the central axis of the box body.

Preferably, the lubricating assembly comprises a tank body, an electric cylinder and a piston, the electric cylinder is arranged below the tank body, and the piston is arranged above the electric cylinder.

Preferably, the outer surface of the piston is attached to the inner surface of the tank body, and the central axis of the piston coincides with the central axis of the electric cylinder.

Preferably, the lubricating component further comprises a liquid conveying pipe, an electromagnetic valve and a hairbrush nozzle, the liquid conveying pipe is arranged above the tank body, and the electromagnetic valve and the hairbrush nozzle are sequentially installed outside the liquid conveying pipe from left to right.

Preferably, the brush nozzle is communicated with the tank body through a liquid conveying pipe, and the right surface of the brush nozzle is attached to the left surface of the worm wheel.

Compared with the prior art, the utility model has the beneficial effects that: the locking mechanism has a double pre-tightening safety function, reduces the possibility of loosening of the first nut and the second nut, ensures the precision of the screw rod and simultaneously improves the safety performance of a machine tool, has a lubricating function and effectively slows down abrasion;

1. according to the utility model, through the arrangement of the first nut, the second nut, the first bolt, the pressing plate and the second bolt, the first nut is screwed on the screw shaft, the second nut is connected above the first nut in parallel, the first nut and the second nut are fastened together by sharing the first bolt, the pressing plate is covered above the second nut and presses the first bolt, and the pressing plate is fixed at the shaft end of the screw through the second bolt, so that the double pre-tightening safety effect is achieved, the possibility of loosening of the first nut and the second nut is reduced, the precision of the screw is ensured, and the safety performance of a machine tool is improved;

2. according to the utility model, through the arrangement of the tank body, the electric cylinder, the piston, the liquid conveying pipe, the electromagnetic valve and the brush nozzle, the cover of the tank body is opened to add lubricating oil, the electric cylinder is started to push the piston to extrude the lubricating oil in the tank body, the electromagnetic valve is simultaneously opened, the lubricating oil is conveyed to the brush nozzle through the liquid conveying pipe, the lubricating oil sprayed by the brush nozzle is matched with the brush to lubricate the worm wheel, so that the locking mechanism has a lubricating function, and the abrasion is effectively reduced.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a front sectional view of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention.

In the figure: 1. a round nut; 2. a shaft sleeve; 3. a first thrust ball bearing; 4. adjusting a first cushion; 5. a seal ring; 6. a box body; 7. a second adjusting pad; 8. a second thrust ball bearing; 9. a worm gear; 10. a screw shaft; 11. a first nut; 12. a second nut; 13. a first bolt; 14. pressing a plate; 15. a second bolt; 16. a cover plate; 17. a third bolt; 18. a lubrication assembly; 1801. a tank body; 1802. an electric cylinder; 1803. a piston; 1804. a transfusion tube; 1805. an electromagnetic valve; 1806. a brush nozzle.

Detailed Description

As shown in fig. 1-2, a locking mechanism of a lifting screw comprises a round nut 1 and a bolt 13, a shaft sleeve 2 is arranged above the round nut 1, a thrust ball bearing 3 is arranged above the shaft sleeve 2, an adjusting pad 4 is arranged above the thrust ball bearing 3, a seal ring 5 and a screw shaft 10 are sequentially arranged outside the adjusting pad 4 from inside to outside, a box body 6 is arranged outside the seal ring 5, an adjusting pad 7 is arranged below the inner wall of the box body 6, a thrust ball bearing 8 is arranged above the adjusting pad 7, a worm wheel 9 is arranged above the thrust ball bearing 8, a cover plate 16 is arranged above the outer part of the box body 6, a bolt three 17 is arranged outside the cover plate 16, a lubricating component 18 for lubricating is fixed on one side of the outer part of the box body 6, the cover plate 16 is fixedly connected with the box body 6 through the bolt three 17, and the central axis of the cover plate 16 coincides with the central axis of the box body 6, the lubricating component 18 comprises a tank body 1801, an electric cylinder 1802 and a piston 1803, the electric cylinder 1802 is arranged below the tank body 1801, the piston 1803 is arranged above the electric cylinder 1802, the outer surface of the piston 1803 is attached to the inner surface of the tank body 1801, the central axis of the piston 1803 is overlapped with the central axis of the electric cylinder 1802, the lubricating component 18 further comprises a liquid conveying pipe 1804, an electromagnetic valve 1805 and a brush spray head 1806, a liquid conveying pipe 1804 is arranged above the tank body 1801, the electromagnetic valve 1805 and the brush spray head 1806 are sequentially arranged outside the liquid conveying pipe 1804 from left to right, the brush spray head 1806 is communicated with the tank body 1801 through the liquid conveying pipe 1804, the right surface of the brush spray head 1806 is attached to the left surface of a worm wheel 9, a cover of the tank body 1801 is opened to add lubricating oil, the electric cylinder 1802 is started to push the piston 1803 to extrude the lubricating oil in the tank body 1801, the electromagnetic valve 1805 is simultaneously opened, the lubricating oil is conveyed to the brush spray head 1806 through the liquid conveying pipe 1804, the brush shower nozzle 1806 spouts lubricating oil and the brush lubricates the worm wheel 9, so that the locking mechanism has a lubricating function and effectively slows down abrasion.

As shown in fig. 3, a first nut 11 is arranged above the worm wheel 9, a second nut 12 is arranged above the first nut 11, a first bolt 13 is mounted outside the second nut 12, a second bolt 15 is arranged at one end of the screw shaft 10, a pressing plate 14 is mounted outside the second bolt 15, the first nut 11 is in threaded connection with the screw shaft 10, the screw shaft 10 is in threaded connection with the second nut 12, the upper surface of the second nut 12 is attached to the lower surface of the pressing plate 14, the pressing plate 14 is fixedly connected with the screw shaft 10 through the second bolt 15, the first nut 11 is screwed on the screw shaft 10, the first nut 11 is connected with the second nut 12 in parallel, the first nut 11 and the second nut 12 are fastened together by using the first bolt 13, the upper side of the second nut 12 is covered with the pressing plate 14, the first bolt 13 is pressed, the pressing plate 14 is fixed at the end of the screw shaft 10 through the second bolt 15, a double pre-tightening safety function is provided, the possibility of loosening of the first nut 11 and the second nut 12 is reduced, the precision of the screw rod is guaranteed, and meanwhile the safety performance of the machine tool is improved.

The working principle is as follows: when the locking mechanism of the lifting screw rod is used, firstly, a round nut 1 and a screw rod shaft 10 rotate, a shaft sleeve 2, a thrust ball bearing I3 and an adjusting pad I4 are pressed on the outer lower part of a box body 6, a sealing ring 5 is used for sealing a gap between the screw rod shaft 10 and the box body 6, a nut I11 is screwed on the screw rod shaft 10, a worm wheel 9, an adjusting pad II 7 and a thrust ball bearing II 8 are pressed on the lower part of the inner wall of the box body 6 through a bolt I13, a nut II 12 is connected above the nut I11 in parallel, the nut I11 and the nut II 12 are fastened together through a bolt I13, a pressure plate 14 is covered on the upper part of the nut II 12 and presses the bolt I13, the pressure plate 14 is fixed at the end of the screw rod shaft 10 through a bolt II 15 and has a double pre-tightening safety function, the screw rod shaft 10 forms rotary connection with the box body 6 through the thrust ball bearing I3 and the thrust ball bearing II 8, a cover of a tank body 1801 is opened to add lubricating oil, start electric cylinder 1802 and promote the lubricating oil in the jar body 1801 of piston 1803 extrusion, open solenoid valve 1805 simultaneously, lubricating oil passes through transfer line 1804 and carries to brush shower nozzle 1806, and brush shower nozzle 1806 blowout is lubricated, and brush and worm wheel 9 laminating of brush shower nozzle 1806 lubricate it, and this is exactly this locking mechanical system's of lift lead screw theory of operation.

Claims

1. A locking mechanism of a lifting screw rod comprises a round nut (1) and a first bolt (13), and is characterized in that a shaft sleeve (2) is arranged above the round nut (1), a first thrust ball bearing (3) is arranged above the shaft sleeve (2), a first adjusting pad (4) is arranged above the first thrust ball bearing (3), a sealing ring (5) and a screw rod shaft (10) are sequentially arranged outside the first adjusting pad (4) from inside to outside, a box body (6) is arranged outside the sealing ring (5), a second adjusting pad (7) is arranged below the inner wall of the box body (6), a second thrust ball bearing (8) is arranged above the second adjusting pad (7), a worm wheel (9) is arranged above the second thrust ball bearing (8), a first nut (11) is arranged above the worm wheel (9), and a second nut (12) is arranged above the first nut (11), the first bolt (13) is installed outside the second nut (12), the second bolt (15) is arranged at one end of the screw rod shaft (10), a pressing plate (14) is installed outside the second bolt (15), a cover plate (16) is arranged above the outside of the box body (6), a third bolt (17) is installed outside the cover plate (16), and a lubricating assembly (18) for lubricating is fixed on one side of the outside of the box body (6).

2. A locking mechanism for a lifting screw according to claim 1, characterised in that the first nut (11) is threadedly connected to the screw shaft (10) and the screw shaft (10) is threadedly connected to the second nut (12).

3. The locking mechanism of a lifting screw rod according to claim 1, characterized in that the upper surface of the second nut (12) is attached to the lower surface of the pressure plate (14), and the pressure plate (14) is fixedly connected with the screw rod shaft (10) through the second bolt (15).

4. The locking mechanism of a lifting screw according to claim 1, characterized in that the cover plate (16) is fixedly connected with the box body (6) by a third bolt (17), and the central axis of the cover plate (16) coincides with the central axis of the box body (6).

5. The locking mechanism of a lifting screw according to claim 1, characterized in that the lubricating assembly (18) comprises a tank (1801), an electric cylinder (1802) and a piston (1803), wherein the electric cylinder (1802) is arranged below the tank (1801), and the piston (1803) is arranged above the electric cylinder (1802).

6. The locking mechanism of a lifting screw according to claim 5, characterized in that the outer surface of the piston (1803) is attached to the inner surface of the tank (1801), and the central axis of the piston (1803) coincides with the central axis of the electric cylinder (1802).

7. The locking mechanism of the lifting screw rod as claimed in claim 5, wherein the lubricating assembly (18) further comprises an infusion tube (1804), a solenoid valve (1805) and a brush head (1806), the infusion tube (1804) is arranged above the tank (1801), and the solenoid valve (1805) and the brush head (1806) are sequentially installed outside the infusion tube (1804) from left to right.

8. The locking mechanism of an elevating screw rod as claimed in claim 7, wherein the brush head (1806) is interconnected with the tank (1801) via the infusion tube (1804), and the right surface of the brush head (1806) is attached to the left surface of the worm wheel (9).