CN213231308U

CN213231308U - Hydraulic winch

Info

Publication number: CN213231308U
Application number: CN202021302462.6U
Authority: CN
Inventors: 刘若江
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-05-18
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a hydraulic winch. The hydraulic winch comprises: -a winch frame (1), -a hydraulic motor (3), -a drum (5) and-a gear drive, the drum (5) being rotatably supported on the winch frame (1), the gear drive comprising: the winch comprises an inner gear ring (2) and a gear (4), wherein the gear (4) is meshed with the inner gear of the inner gear ring (2), the inner gear ring (2) is fixedly connected with the roller (5), the central axis of the inner gear ring (2) is coincident with the rotation axis of the roller (5), the gear (4) is rotatably arranged on the winch frame (1), and the hydraulic motor (3) drives the gear (4) to rotate. The hydraulic winch of the utility model has the advantages of simple structure and convenient maintenance.

Description

Hydraulic winch

Technical Field

The utility model relates to a winch, especially a hydraulic winch.

Background

A winch is a hoisting device that hoists or pulls a heavy object by winding a wire rope or a chain around a drum. The winch can be used independently, can also be used as a component part in machinery such as hoisting, road building, mine hoisting and the like, and is widely applied due to simple operation, large rope winding amount and convenient displacement. The lifting device is mainly applied to material lifting or flat dragging of buildings, hydraulic engineering, forestry, mines, wharfs and the like.

The hydraulic winch adopts a hydraulic motor as a power source, has the characteristics of low noise, easiness in operation, compact structure and the like, and is widely used.

Prior art hydraulic drawworks typically employ a low speed, high torque hydraulic motor coupled with a planetary reduction gear to drive the drawworks. This structure also has the disadvantages of complex structure, inconvenient maintenance, etc.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a hydraulic winch that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.

In order to achieve the above object, the utility model provides a hydraulic winch, hydraulic winch includes: a winch frame, a hydraulic motor, a drum rotatably supported on the winch frame, and a gear drive comprising: an inner gear ring and a gear, the gear is engaged with the inner teeth of the inner gear ring,

wherein the inner gear ring is fixedly connected with the roller, the central axis of the inner gear ring is superposed with the rotation axis of the roller,

the gear is rotatably disposed on the winch frame,

the hydraulic motor drives the gear to rotate.

Preferably, the hydraulic motor is mounted on the winch frame, and an output shaft of the hydraulic motor is coaxially connected with the gear.

Preferably, the hydraulic motor is provided with a built-in normally closed brake, and the built-in normally closed brake locks the hydraulic motor when the input hydraulic pressure of the hydraulic motor is zero or less than a set value.

Preferably, the drum includes a drum rotating shaft relatively rotatably supported on the winch frame, and a drum body mounted on the drum rotating shaft and integrally rotated with the drum rotating shaft.

Preferably, the drum comprises two side plates spaced apart from each other in the axial direction, the side plates being fixedly connected with the drum body, the inner ring gear being fixedly connected at a radially outer portion to the respective side plate adjacent thereto.

Preferably, a thickened portion is provided at a corresponding side plate connected with the ring gear, and is connected with the drum rotating shaft at the thickened portion through a key or a D-shaped hole to transmit torque to the drum rotating shaft.

Preferably, the number of the gears is three, and the gears are uniformly arranged in the circumferential direction.

Preferably, one hydraulic motor is provided for each gear, and three hydraulic motors are connected in parallel on the fluid path.

Preferably, the gear ratio of the gear and the inner gear ring is between 5:1 and 15: 1.

Preferably, the hydraulic winch further comprises a ratchet brake, the ratchet brake is mounted on the winch frame, and a brake claw of the ratchet brake is matched with a groove arranged on the inner gear ring or a side plate of the roller to only allow the hydraulic winch to rotate in one direction.

The hydraulic winch of the utility model has the advantages of simple structure and convenient maintenance.

Drawings

Fig. 1 is a schematic front view of a hydraulic winch according to an embodiment of the present invention.

Fig. 2 is a schematic side view of a hydraulic winch according to an embodiment of the present invention.

Reference numerals:

1	winch frame	6	Ratchet wheel type brake
				2	Inner gear ring	51	Rotary shaft of drum
3	Hydraulic motor	52	Cylinder body
				4	Gear wheel	53	Side plate
5	Roller	54	Thickened part

Detailed Description

In the drawings, the same or similar reference numerals are used to denote the same or similar elements or elements having the same or similar functions. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the hydraulic winch of the embodiment of the present invention includes: the winch comprises a winch frame 1, an inner gear ring 2, a hydraulic motor 3, a gear 4 and a roller 5.

The winch frame 1 is a support or support for the entire hydraulic winch and may take any suitable configuration and form, not limited to the one shown.

A drum 5 is rotatably supported on the winch frame 1. The gear 4 is engaged with the internal teeth of the ring gear 2 to form a gear driving device. The gear driving device is a speed reduction driving device.

The inner gear ring 2 is fixedly connected with the roller 5, and the central axis of the inner gear ring 2 coincides with the rotation axis of the roller 5. Thus, the ring gear 2 rotates integrally with the drum 5.

A gear 4 is rotatably arranged on the winch frame 1, and the hydraulic motor 3 drives the gear 4 to rotate.

The utility model discloses hydraulic winch has simple structure, maintains convenient advantage.

As shown in the figure, the hydraulic motor 3 is mounted on the winch frame 1, and an output shaft of the hydraulic motor 3 is coaxially connected with the gear 4. Thus, the transmission structure of the hydraulic motor to the gear 4 is simple.

In an alternative embodiment, the hydraulic motor 3 is provided with an internal normally closed brake which locks the hydraulic motor 3 when the input hydraulic pressure of the hydraulic motor 3 is zero or less than a set value.

As shown in the drawing, the number of the gears 4 provided is three, and they are evenly arranged in the circumferential direction. This makes it possible, on the one hand, to increase the robustness of the overall structure and, on the other hand, to reduce the output torque of the individual toothed wheels 4 and thus the strength requirements on the toothed wheels 4. This is advantageous for cost reduction.

One hydraulic motor 3 is provided for each gear 4, and three hydraulic motors 3 are connected in parallel on the fluid path. In other words, the oil inlet and return pipelines of the three hydraulic motors 3 are parallel channels to ensure the synchronism of the motors.

The reduction ratio of the reduction driving device formed by the gear 4 and the inner gear ring 2 can be set according to specific requirements. For example, the gear ratio of gear 4 and ring gear 2 is between 5:1 and 15: 1.

The drum 5 may have any suitable structure as long as the cable can be wound. In the illustrated embodiment, the drum 5 includes a drum rotating shaft 51 and a drum main body 52. The drum rotation shaft 51 is supported on the winch frame 1 so as to be relatively rotatable. That is, the drum rotation shaft 51 is rotatable with respect to the winch frame 1. The drum main body 52 is mounted on the drum rotating shaft 51 and rotates integrally with the drum rotating shaft 51. In an alternative embodiment, the drum main body 52 is mounted on the drum rotating shaft 51 by a spline or a flat key for integral rotation; in another alternative embodiment, the drum body 52 is sleeved on the square shaft or the double D shaft (the primary shaft-to-side milling platform) of the drum rotating shaft 51 through the square hole or the double D hole to realize integral rotation.

As shown, the drum 5 includes two side plates 53 spaced apart from each other in the axial direction. The side plate 53 is fixedly connected to the drum body 52. The ring gear 21 is fixedly connected at a radially outer portion to a corresponding side plate 53 (i.e., the side plate on the left side of fig. 1) adjacent thereto.

Referring to fig. 1, a thickened portion 54 is provided at a corresponding side plate (i.e., the side plate at the left side of fig. 1) connected with the ring gear 21, and is connected with the drum rotating shaft 51 at the thickened portion 54 through a key (e.g., a flat key) or a D-shaped hole to transmit torque to the drum rotating shaft 51. The drum rotating shaft 51 has a D-shaped section at the corresponding fitting portion in a state of being connected to the drum rotating shaft 51 through a D-shaped hole. The D-shaped cross-section is formed by milling a flat on one side of the circular shaft.

In order to better achieve the braking of the drum, in particular to prevent the drum from rotating backwards during operation, the hydraulic winch further comprises a ratchet brake 6. A ratchet brake 6 is mounted on the winch frame 1. The brake claws of the ratchet brake 6 are matched with the inner gear ring 21 or the grooves arranged on the side plates of the roller 5, and only the hydraulic winch is allowed to rotate in one direction.

In particular, as shown, the braking pawl of the ratchet brake 6 is spring loaded, that is, the braking pawl is a spring return type angle latch. For example, the spring return type inclined bolt is matched with the rectangular teeth on the outer edge of the inner gear ring to realize unidirectional braking. When the inner gear ring rotates forwards, the rectangular teeth at the outer edge of the inner gear ring are engaged with the inclined surface side of the inclined plug pin and press the inclined surface, so that the inclined plug pin retracts against the spring force, and the inner gear ring is allowed to rotate forwards. When the inner gear ring rotates reversely, the rectangular teeth on the outer edge of the inner gear ring are engaged with the step surfaces or the stopping parts of the inclined bolts, and the step surfaces or the stopping parts prevent the inner gear ring from rotating, so that the inner gear ring is prevented from rotating reversely.

Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it. Those of ordinary skill in the art will understand that: modifications can be made to the technical solutions described in the foregoing embodiments, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A hydraulic winch, characterized in that it comprises: -a winch frame (1), -a hydraulic motor (3), -a drum (5) and-a gear drive, the drum (5) being rotatably supported on the winch frame (1), the gear drive comprising: an inner gear ring (2) and a gear (4), wherein the gear (4) is meshed with the inner teeth of the inner gear ring (2),

wherein the inner gear ring (2) is fixedly connected with the roller (5), the central axis of the inner gear ring (2) is superposed with the rotation axis of the roller (5),

the gear (4) is arranged on the winch frame (1) in a rotatable manner,

the hydraulic motor (3) drives the gear (4) to rotate.

2. The hydraulic winch according to claim 1, characterized in that the hydraulic motor (3) is mounted on the winch frame (1), the output shaft of the hydraulic motor (3) being coaxially connected to the gear wheel (4).

3. The hydraulic winch according to claim 1, characterized in that the hydraulic motor (3) is provided with an internal normally closed brake which locks the hydraulic motor (3) when the input hydraulic pressure of the hydraulic motor (3) is zero or less than a set value.

4. The hydraulic winch according to claim 1, characterized in that said drum (5) comprises a drum rotation shaft (51) and a drum body (52), said drum rotation shaft (51) being relatively rotatably supported on said winch frame (1), said drum body (52) being mounted on said drum rotation shaft (51) and rotating integrally with said drum rotation shaft (51).

5. The hydraulic winch according to claim 4, characterized in that said drum (5) comprises two side plates (53) axially spaced from each other, said side plates (53) being fixedly connected with said drum body (52), said inner ring gear (2) being fixedly connected at a radially outer portion to the respective side plate (53) adjacent thereto.

6. The hydraulic winch according to claim 5, characterized in that a thickening (54) is provided at the respective side plate connected to the inner ring gear (2), and is connected to the drum rotation shaft (51) at the thickening (54) by means of a key or a D-shaped hole to transmit torque to the drum rotation shaft (51).

7. The hydraulic winch according to claim 1, characterized in that said gears (4) are three in number and are circumferentially uniformly arranged.

8. The hydraulic winch according to claim 7, characterized in that one hydraulic motor (3) is associated with each gear wheel (4), three hydraulic motors (3) being connected in parallel on the hydraulic circuit.

9. The hydraulic winch according to any of the claims 1 to 8, characterized in that the gear ratio of the gear (4) and the internal gear ring (2) is between 5:1 and 15: 1.

10. The hydraulic winch according to any of the claims 1 to 8, characterized in that it further comprises a ratchet brake (6), said ratchet brake (6) being mounted on said winch frame (1), the pawl of said ratchet brake (6) cooperating with a recess provided on said inner ring gear (2) or on the side plate of the drum (5) allowing only a unidirectional rotation of said hydraulic winch.