CN112141261A

CN112141261A - Automatic lifting mast device

Info

Publication number: CN112141261A
Application number: CN202010722030.9A
Authority: CN
Inventors: 秦小龙; 陈旭东; 董小伟; 张卫
Original assignee: China Merchants Bureau Cruise Manufacturing Co ltd
Current assignee: China Merchants Bureau Cruise Manufacturing Co ltd; China Merchants Jinling Shipyard Jiangsu Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-12-29

Abstract

The invention discloses an automatic mast lifting device, which comprises a mast lower base, wherein a mast base is arranged on the mast lower base, a mast barrel is arranged on the mast base, a cable fixing frame is welded outside the mast barrel, a mast cross rod is sequentially erected at the upper part of the cable fixing frame, a worm reducer is arranged on the mast base and is connected with a turbine, a screw rod group is arranged in the turbine and comprises a first-stage screw pair positioned at the outermost side, the first-stage screw pair comprises a first-stage screw rod and a first-stage screw rod nut which are connected with the turbine, the excircle of the first-stage screw rod nut is also used as a second-stage screw rod, the analogy is carried out in sequence, the excircle of a seventh-stage screw rod nut is also used as an eighth screw rod, the eighth screw rod and the eighth screw rod nut form an eighth-stage screw rod pair, and the turbine is driven. The navigation capacity of the ship is improved, the safety of ship navigation signals is guaranteed, and masts with any height can be designed by utilizing the principle.

Description

Automatic lifting mast device

Technical Field

The invention relates to the field of mechanical tools, in particular to an automatic mast lifting device.

Background

In recent years, because the tonnage of inland river ships is getting larger and larger, the height of a flood bridge crossing of a Nanjing Yangtze river bridge is less than 24m, and the total height of a plurality of ships arranged with masts is more than 30 m and even more than 40m, which requires that necessary measures are taken to reduce the height of the fixing equipment.

There are two methods in the market today to solve the mast height problem: first, with a reversible mast, the disadvantages of the reversible mast are: the signal equipment is in a closed state only aiming at the shorter mast, and after the mast is inverted, the sailing safety of the ship is seriously influenced; the second kind adopts hydraulic cylinder lift mast, the shortcoming of hydraulic cylinder lift: the effect of going up and down is not obvious, and is more difficult to mast lift more than 10m, and hydro-cylinder diameter ratio is great, is difficult for arranging signal equipment, and hydraulic cylinder dwell time is not long, and hydraulic circuit is when long distance operation, and the on-way resistance is very big, connects many, reveals the probability big, causes the lifting speed of a plurality of hydro-cylinders different, and the platform slope with slowly sink, the serious influence life and safety in utilization such as easy card shell.

Disclosure of Invention

In order to solve the problems, the invention discloses an automatic lifting mast device.

The technical scheme of the invention is as follows: an automatic lifting mast device comprises a mast lower base, a mast base is arranged on the mast lower base, a mast barrel is arranged on the mast base, a cable fixing frame is welded outside the mast barrel, a mast cross rod is sequentially erected on the upper portion of the cable fixing frame, a worm reducer is arranged on the mast base and connected with a turbine, a screw rod set is arranged in the turbine and comprises a first-stage screw pair located on the outermost side, the first-stage screw pair comprises a first-stage screw rod and a first-stage screw rod nut which are connected with the turbine, the excircle of the first-stage screw rod nut is also used as a second-stage screw rod, a second-stage screw rod and a second-stage screw rod nut form a second-stage screw thread pair located on the inner side of the first-stage screw thread pair, a limiting step is arranged at the lower end of the second-stage screw rod, the excircle of the second-stage screw rod nut is also used as a third-, the lower end of the third screw rod is provided with a limiting step, the process is analogized in sequence, the excircle of the seventh-stage screw rod nut is also used as an eighth screw rod, the eighth screw rod and the eighth screw rod nut form an eighth-stage thread pair, the eighth screw rod nut is used as a support body of the lifting mast, and the turbine is driven by the emergency hand crank through the meshing of the worm reducer and the emergency hand crank driving wheel.

Furthermore, the cable fixing frame and the bottom of the mast cross rod are fixed through a connecting toggle plate, and signal lamps are fixed on the top of the mast and the mast cross rod through bolts.

Furthermore, the first screw rod is installed in an interference fit mode with the lower bearing at the bottom, a spacer bush is arranged below the lower bearing, and the spacer bush and the lower bearing are in clearance fit.

Further, the upper end of the eighth stage screw nut is matched with the upper bearing.

Furthermore, a wiring board is installed on the side surface of the mast base, the wiring board connects cables at the bottom of the mast barrel body with various types of equipment, and a hand controller is installed around the mast base.

The invention has the advantages that: the lifting mast device is reasonable in design, simple in structure, practical, efficient, light, safe and automatic, potential safety hazards are eliminated, safe and reliable lifting effects are achieved by utilizing progressive stretching of the multistage telescopic thread pairs, the transmission ratio is accurate, the center span is large, the lifting mast device is stable, free of vibration and slipping, can work and transmit in severe environments, and is long in service life; the mast can be suspended at will between 3.5m and 12.5m, the mast always ensures the vertical state, and the safety is ensured under the condition of navigation; the navigation capacity of the ship is improved, and the safety of ship navigation signals is guaranteed; the reproducibility is high, and the mast with any height can be designed by utilizing the principle.

Drawings

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

FIG. 2 is a schematic view of the construction of the automatic raising and lowering mast of the present invention;

FIG. 3 is a schematic structural diagram of a detailed connection diagram between the worm gear and the screw rod pair;

FIG. 4 is a schematic structural diagram of a top view of the connection between the worm gear and the screw rod pair of the present invention;

wherein: 1. the hand controller comprises a hand controller 2, a wiring board 3, an emergency crank 31, an emergency crank driving wheel 4, a worm reducer 5, a mast cylinder 6, a screw rod group 7, a cable fixing frame 8, a cable 9, a mast cross rod 10, a signal lamp 11, a connecting toggle plate 12, a mast base 13, a mast lower base 14, a lower bearing 15, a turbine 16, an upper bearing 17, a first-stage thread pair 18, a first-stage screw nut 19, a second-stage screw nut 20 and an eighth-stage screw nut.

Detailed Description

For the purpose of enhancing an understanding of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

As shown in figure 1, an automatic lifting mast device comprises a mast lower base 13, a mast base 12 is arranged on the mast lower base 13, a mast cylinder 5 is arranged on the mast base 12, a cable fixing frame 7 is welded outside the mast cylinder 5, the fixing frame is welded outside the cylinder and does not affect the normal work of the cylinder and is used for threading and fixing cables, mast cross rods 9 are sequentially erected on the upper portion of the cable fixing frame 7, the mast cross rods 9 are welded outside 5, 6 and 7 stages of lead screw stainless steel spacer bushes (cylinders), the cable fixing frame 7 and the bottoms of the mast cross rods 9 are fixed through a connecting toggle plate 11, signal lamps are fixed on the top of the mast and the mast cross rods through bolts so as to adapt to the arrangement requirements of different signal lamps, the signal lamps ensure the closing state when the mast is lifted, a worm reducer 41 is arranged on the mast base 12, and the worm reducer 41 is connected with, the worm wheel 15 is internally provided with a screw rod group 6, the side surface of the mast base is provided with a wiring board, the wiring board connects the cable 8 at the bottom of the mast barrel with various types of equipment, and a hand controller is arranged around the mast base.

The screw rod group 16 comprises a first-stage thread pair 17 located on the outermost side, high-temperature-resistant lubricating grease is coated on the thread pair, the thread pair forms a mast lifting main body and is protected by a stainless steel cylinder, fluctuation between 3.5m and 12.5m of a mast can be realized, and hovering at any height can be realized; the first-stage screw pair 17 comprises a first-stage screw rod and a first-stage screw rod nut 18 which are connected with the turbine 15, the first-stage screw rod is connected with the turbine, the worm drives the worm to transmit torque, and the torque is transmitted to the shaft; the first screw rod is installed with the lower bearing 14 at the bottom in an interference fit manner, a spacer bush is arranged below the lower bearing 14, the spacer bush and the lower bearing are in clearance fit, the excircle of a first-stage screw nut 18 is also used as a second-stage screw rod, a second-stage screw thread pair positioned at the inner side of the first-stage screw thread pair is formed by the second-stage screw rod and a second-stage screw nut 19, the lower end of the second-stage screw rod is provided with a limiting step, the excircle of the second-stage screw nut 19 is also used as a third-stage screw rod, a third-stage screw rod and a third-stage screw nut are formed into a third-stage screw thread pair positioned in the second-stage screw thread pair, the lower end of the third screw rod is provided with the limiting step, the analogy is sequentially performed, the excircle of a seventh-stage screw nut is also used as an eighth-stage screw rod, an eighth-stage screw thread pair is formed by the eighth screw rod and an eighth screw nut 20, the worm wheel 15 is meshed with the emergency hand crank driving wheel 31 through the worm speed reducer 4 and driven by the emergency hand crank 3, the manual hand crank is manually operated by a worker under emergency, the hand crank is used for operating the worm and further driving the worm wheel to rotate the screw rod to play a role in controlling the mast, and the operating mast reducing speed of the handle is not lower than the automatic reducing speed.

Claims

1. The utility model provides an automatic lift mast device, includes base under the mast, locate the mast base on the base under the mast, be equipped with the mast barrel on the mast base, the outer welding of mast barrel has cable conductor mount, its characterized in that: the upper part of the cable fixing frame is sequentially provided with mast cross rods, the mast base is provided with a worm reducer, the worm reducer is connected with a turbine, a screw rod group is arranged in the turbine, the screw rod group comprises a first-stage screw pair positioned at the outermost side, the first-stage screw pair comprises a first-stage screw rod and a first-stage screw nut which are connected with the turbine, the excircle of the first-stage screw nut is also used as a second-stage screw rod, the second-stage screw rod and the second-stage screw nut form a second-stage screw pair positioned at the inner side of the first-stage screw pair, the lower end of the second-stage screw rod is provided with a limiting step, the excircle of the second-stage screw nut is also used as a third-stage screw rod, the third-stage screw rod and the third-stage screw nut form a third-stage screw pair positioned in the second-stage screw pair, the lower end of the third screw rod is provided with, and the eighth screw rod nut form an eighth-stage thread pair, the eighth-stage screw rod nut is used as a support body of the lifting mast, and the turbine is driven by an emergency crank through meshing of the worm speed reducer and an emergency crank driving wheel.

2. An automatic raising mast apparatus according to claim 1, characterized in that: the cable fixing frame and the bottom of the mast cross rod are fixed through connecting a toggle plate, and signal lamps are fixed on the top of the mast and the mast cross rod through bolts.

3. An automatic raising mast apparatus according to claim 1, characterized in that: the first screw rod is installed in interference fit with the lower bearing at the bottom, a spacer bush is arranged below the lower bearing, and the spacer bush and the lower bearing are in clearance fit.

4. An automatic raising mast apparatus according to claim 1, characterized in that: and the upper end of the eighth-stage screw rod nut is matched with the upper bearing.

5. An automatic raising mast apparatus according to claim 1, characterized in that: the side surface of the mast base is provided with a wiring board, the wiring board connects cables at the bottom of the mast barrel body with various types of equipment, and hand controllers are arranged around the mast base.