CN219139761U

CN219139761U - Gear box for constant-tension winch

Info

Publication number: CN219139761U
Application number: CN202222848365.2U
Authority: CN
Inventors: 陈飞; 刘德杰
Original assignee: CSSC Nanjing Luzhou Machine Co Ltd
Current assignee: CSSC Nanjing Luzhou Machine Co Ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-06-06
Anticipated expiration: 2032-10-27

Abstract

The utility model relates to a gear box for a constant tension winch. The gear box cavity is internally provided with one large gear and one small gear which are completely meshed with each other through external teeth; the two ends of each gear are respectively fixed by bearings. The outer part of the gear box is respectively provided with a lifting motor and a constant tension motor; the internal teeth of the pinion are meshed with the output shaft of the constant tension motor; the internal teeth of the large gear and the outer ring of the backstop are fixed through screws; the inner ring of the backstop is meshed with the output shaft of the lifting motor; the output shaft of the large gear is meshed with the speed reducer. The backstop has the characteristic of unidirectional operation only; when the output shaft of the lifting motor rotates in the forward direction, the inner ring of the backstop is driven to rotate, the outer ring and the inner ring of the backstop are synchronous, the large gear is driven to rotate, and the winch is used for rope collection and cargo lifting. The utility model has simple structure, economy and practicability, convenient installation and maintenance and high reliability.

Description

Gear box for constant-tension winch

Technical Field

The utility model relates to hoisting equipment, in particular to a gear box for a winch with constant tension, and belongs to the technical field of cranes.

Background

When a ship is moored at sea, periodic up-and-down motions are generated along with the motions of sea waves or gushes, the motions are basically in a sine or cosine curve law relative to a static seabed, and the motions are an indefinite curve related to a plurality of parameters (such as total mass, gravity center, parking position, sea state and the like) between the two ships relative to another ship which is tied together. Due to the above movements, the lifting load can collide with the stationary object uncontrollably when cargo passing or personnel transferring to the stationary marine object; when cargo is passed or personnel are transported to other movement planes (such as ship decks), the suspended load can collide with the cargo. The maximum collision force in both cases is even far exceeding the object dead weight, is a great potential safety hazard for valuables or personnel, and cannot realize accurate positioning. In order to ensure smooth lifting operation, eliminate potential safety hazards, a constant tension winch is used, so that the problems can be effectively solved.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the gear box for the constant tension winch, which has low cost, simple structure and convenient installation and maintenance, and is used for serving the crane.

The utility model adopts the following technical scheme for solving the technical problems:

a gear box for a constant tension winch is characterized in that a lifting motor and a constant tension motor are respectively arranged on two motor interfaces of the gear box, and the gear box is arranged on a speed reducer. The above all adopt bolted connection, simple structure, installation easy maintenance.

The gear box mainly comprises a gear box body, a bearing, a pinion, a large gear, a screw, a gasket, a box cover plate, a bearing, a motor mounting plate, a screw and a gasket;

the gearbox body is formed by welding steel plates, and the box cover plate is arranged on the gearbox body through screws and washers; the motor mounting plate is mounted on the box cover plate through screws and washers; a large gear and a backstop are arranged in a cavity on the right side of the gear box, and a bearing are respectively arranged at two ends of the large gear; the bearing is fixed in the clamping groove of the box body; the bearing is fixed in the clamping groove of the motor mounting plate; the large gear rotates freely around the axle center.

The working principle of the scheme is as follows:

when the output shaft of the lifting motor rotates in the forward direction, the inner ring of the backstop is driven to rotate, the outer ring and the inner ring of the backstop are synchronous, the large gear is driven to rotate, and the winch is used for rope collection and cargo lifting. When the output shaft of the lifting motor rotates reversely, the inner ring of the backstop is driven to rotate, but the outer ring of the backstop can only idle, and the goods are stationary. The output shaft of the constant tension motor reversely rotates to drive the pinion to rotate, the pinion drives the large gear to rotate, and the winch releases ropes and loads; the output shaft of the constant tension motor rotates forward to drive the pinion to rotate, the pinion drives the large gear to rotate, and the winch rapidly receives ropes and enters a constant tension mode.

When the hydraulic system works, the tension and the speed of the constant tension motor are preset, and the opening and the closing of the constant tension are controlled by the button. Under the conventional lifting mode, the electric proportional handle controls the direction and the rotating speed of the lifting motor. After the crane is operated in place and the hook head is mounted, a button is pressed, and then the crane enters a constant tension mode.

The technical scheme of the utility model is further defined as follows:

further, a retainer ring is arranged at the joint of the bearing and the motor mounting plate clamping groove. The joint of the motor mounting plate and the box cover plate is provided with a sealing ring.

Further, a pinion is arranged in a cavity at the left side of the gear box, and bearings are arranged at two ends of the pinion; the 2 bearings are respectively fixed in the clamping grooves of the box body and the box body cover plate.

Further, an inner ring gear of the pinion is meshed with an output shaft of the constant tension motor, and the pinion freely rotates around the axis of the pinion.

Further, the output shaft of the constant tension motor reversely rotates to drive the pinion to rotate, the pinion drives the bull gear to rotate, and the winch releases ropes and loads; the constant tension motor output shaft rotates forward to drive the pinion to rotate, the pinion drives the bull gear to rotate, and the winch is used for rope collection and goods lifting, and the constant tension motor output shaft is generally small in tension and is only used for keeping the steel wire rope tight.

Further, the outer ring of the backstop is fixed with the large gear through screws; the inner ring gear of the large gear is meshed with the output shaft of the lifting motor.

Further, the pinion and the bull gear are rotated synchronously by gear engagement.

Further, when the output shaft of the lifting motor rotates in the forward direction, the inner ring of the backstop is driven to rotate, the outer ring of the backstop is synchronous with the inner ring, then the large gear is driven to rotate, and the winch is used for rope collection and cargo lifting; when the output shaft of the lifting motor reversely rotates, the inner ring of the backstop is driven to rotate, at the moment, the outer ring of the backstop idles, and the goods are stationary.

Further, a rotary shaft seal is installed at one end of the output shaft of the large gear.

Furthermore, two sides of the gear box are provided with oil ports for filling gear oil, and the gear box is plugged by plugs.

Compared with the prior art, the technical scheme provided by the utility model has the following technical effects:

1. the lifting motor and the constant tension motor can work independently, and the constant tension mode can be opened/closed at will during the normal lifting mode operation, so that the operation difficulty is greatly reduced.

2. The gear box has compact structure, low cost and high economical efficiency.

3. The installation interface of the gear box is identical with the installation interface of the lifting motor, if the winch does not need a constant tension function, the gear box is removed, and the lifting motor is directly installed on the speed reducer. The interchangeability, the practicability and the universality are higher.

Drawings

FIGS. 1.1 and 1.2 are cross-sectional views of a gearbox;

FIG. 2 is a gearbox installation diagram;

FIG. 3 is a box diagram of a gearbox;

FIG. 4 is a box cover diagram;

in the figure: 1. a gear box body; 2. a bearing; 3. a pinion gear; 4. a large gear; 5. a screw; 6. a backstop; 7. rotating the shaft seal; 8. a screw; 9. a gasket; 10. a case cover plate; 11. a bearing; 12. a retainer ring; 13. a motor mounting plate; 14. a seal ring; 15. a seal ring; 16. a plug; 17. a screw; 18. a gasket; 19. a lifting motor; 20. a constant tension motor; 21. a gear box; 22. a speed reducer; 23. and (5) a winch.

Detailed Description

The technical scheme of the utility model is further described in detail below with reference to the accompanying drawings:

the utility model provides a gear box for a constant tension winch, wherein a lifting motor 19 and a constant tension motor 20 are respectively arranged on two motor interfaces of a gear box 21, and the gear box 21 is arranged on a speed reducer 22. The above all adopt bolted connection, simple structure, installation easy maintenance.

The scheme gear box mainly comprises a gear box body 1, a bearing 2, a pinion 3, a large gear 4, a screw 8, a gasket 9, a box cover plate 10, a bearing 11, a motor mounting plate 13, a screw 17 and a gasket 18;

the gearbox casing 1 is formed by welding steel plates, and a casing cover plate 10 is arranged on the gearbox casing 1 through a screw 8 and a gasket 9; the motor mounting plate 13 is mounted on the case cover plate 10 through a screw 17 and a washer 18; a large gear 4 and a backstop 6 are arranged in a cavity on the right side of the gear box, and a bearing 2 and a bearing 11 are respectively arranged at two ends of the large gear 4; the bearing 2 is fixed in a clamping groove of the box body 1; the bearing 11 is fixed in a clamping groove of the motor mounting plate 13; the large gear 4 rotates freely around its own axis.

The joint of the bearing 11 and the clamping groove of the motor mounting plate 13 is provided with a retainer ring 12. The joint of the motor mounting plate 13 and the box cover plate 10 is provided with a sealing ring 14 and a sealing ring 15

Further, a pinion 3 is arranged in a cavity at the left side of the gear box, and bearings 2 are arranged at two ends of the pinion 3; the 2 bearings 2 are respectively fixed in the clamping grooves of the box body 1 and the box body cover plate 10.

Further, the inner ring gear of the pinion 3 is engaged with the output shaft of the constant tension motor 20, and the pinion 3 freely rotates around its own axis.

The outer ring of the backstop 6 and the large gear 4 are fixed through a screw 5; the inner ring gear of the large gear 4 is meshed with the output shaft of the lifting motor 19.

The pinion 3 and the bull gear 4 are rotated synchronously by gear engagement.

A rotary shaft seal 7 is mounted at one end of the output shaft of the gearwheel 4.

The two sides of the gear box are provided with oil ports for filling gear oil, and the gear oil ports are plugged by plugs 16.

When the output shaft of the lifting motor 19 rotates in the forward direction, the inner ring of the backstop 6 is driven to rotate, the outer ring and the inner ring of the backstop 6 are synchronous, the large gear 4 is driven to rotate, and the winch 23 is used for winding ropes and lifting cargoes. When the output shaft of the lifting motor 19 rotates reversely, the inner ring of the backstop 6 is driven to rotate, but the outer ring of the backstop 6 can only idle, and the goods are stationary. The output shaft of the constant tension motor 20 reversely rotates to drive the pinion 3 to rotate, the pinion 3 drives the bull gear 4 to rotate, and the winch 23 unwinds and releases goods; the constant tension motor 20 output shaft rotates positively to drive the pinion 3 to rotate, the pinion 3 drives the bull gear 4 to rotate, the winch 23 receives the rope and lifts the goods, and the tension is generally smaller, so that only the wire rope is kept tight or the very small load is lifted.

The working principle of the scheme is as follows:

when the output shaft of the lifting motor 19 rotates in the forward direction, the inner ring of the backstop 6 is driven to rotate, the outer ring and the inner ring of the backstop 6 are synchronous, the large gear 4 is driven to rotate, and the winch 23 is used for winding ropes and lifting cargoes. When the output shaft of the lifting motor 19 rotates reversely, the inner ring of the backstop 6 is driven to rotate, but the outer ring of the backstop 6 can only idle, and the goods are stationary. The output shaft of the constant tension motor 20 reversely rotates to drive the pinion 3 to rotate, the pinion 3 drives the bull gear 4 to rotate, and the winch 23 unwinds and releases goods; the output shaft of the constant tension motor 20 rotates positively to drive the pinion 3 to rotate, the pinion 3 drives the bull gear 4 to rotate, and the winch 23 rapidly takes up ropes and enters a constant tension mode.

In operation, the hydraulic system presets the tension and speed of the constant tension motor 20, and the button controls the opening and closing of the constant tension. Under the conventional lifting mode, the electric proportional handle controls the direction and the rotating speed of the lifting motor. After the crane is operated in place and the hook head is mounted, a button is pressed, and then the crane enters a constant tension mode.

The utility model has simple structure, economy and applicability. The installation and maintenance are convenient, and the reliability is high.

In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the utility model.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the specific embodiments described above, and that the above specific embodiments and descriptions are provided for further illustration of the principles of the present utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. The utility model provides a gear box for constant tension winch, rise motor (19) and constant tension motor (20) and install respectively on two motor interfaces of gear box (21), gear box (21) are installed on speed reducer (22), its characterized in that: the motor comprises a gear box body (1), a bearing, a pinion (3), a large gear (4), a screw (8), a gasket (9), a box cover plate (10) and a motor mounting plate (13);

the gearbox body (1) is formed by welding steel plates, and a box cover plate (10) is arranged on the gearbox body (1) through screws (8) and gaskets (9); the motor mounting plate (13) is mounted on the box cover plate (10) through screws and washers; a large gear (4) and a backstop (6) are arranged in a cavity on the right side of the gear box, and a first bearing (2) and a second bearing (11) are respectively arranged at two ends of the large gear (4); the first bearing (2) is fixed in a clamping groove of the box body (1); the second bearing is fixed in a clamping groove of the motor mounting plate (13); the large gear (4) rotates freely around the axis of the large gear.

2. The gear box for a constant tension winch according to claim 1, wherein:

the joint of the second bearing (11) and the clamping groove of the motor mounting plate (13) is provided with a retainer ring (12), and the joint of the motor mounting plate (13) and the box cover plate (10) is provided with a sealing ring.

3. The gear box for a constant tension winch according to claim 1, wherein: a pinion (3) is arranged in a cavity at the left side of the gear box, and a first bearing (2) is arranged at two ends of the pinion (3); the 2 first bearings (2) are respectively fixed in the clamping grooves of the box body (1) and the box body cover plate (10).

4. The gear box for a constant tension winch according to claim 1, wherein: the inner ring gear of the pinion (3) is meshed with the output shaft of the constant tension motor (20), and the pinion (3) freely rotates around the axis of the pinion.

5. The gear box for a constant tension winch according to claim 1, wherein: the outer ring of the backstop (6) and the large gear (4) are fixed through screws; the inner ring gear of the large gear (4) is meshed with the output shaft of the lifting motor (19).

6. The gear box for a constant tension winch according to claim 1, wherein: the pinion (3) and the large gear (4) are engaged through gears and synchronously rotate.

7. The gear box for a constant tension winch according to claim 4, wherein: one end of an output shaft of the large gear (4) is provided with a rotary shaft seal (7).

8. The gear box for a constant tension winch according to claim 1, wherein: the two sides of the gear box are provided with oil ports for filling gear oil, and the gear oil ports are blocked by plugs (16).