CN220845261U

CN220845261U - Compact hydraulic winch

Info

Publication number: CN220845261U
Application number: CN202322820886.1U
Authority: CN
Inventors: 王福波; 渠伟峰; 袁立彪; 王鑫; 张俊强
Original assignee: Jining Yuansheng Electromechanical Co ltd
Current assignee: Jining Yuansheng Electromechanical Co ltd
Priority date: 2023-10-20
Filing date: 2023-10-20
Publication date: 2024-04-26
Anticipated expiration: 2033-10-20

Abstract

The utility model relates to the technical field of hydraulic winches, in particular to a novel compact hydraulic winch with a braking mechanism and a speed reducing mechanism arranged in a winding drum, which is especially a compact hydraulic winch. The built-in braking mechanism and the built-in speed reducing mechanism are arranged in the winding drum, so that the use of the built-in braking mechanism and the built-in speed reducing mechanism in severe outdoor working condition environments is effectively avoided, and the service lives of the built-in braking mechanism and the built-in speed reducing mechanism are effectively prolonged.

Description

Compact hydraulic winch

Technical Field

The utility model relates to the technical field of hydraulic winches, in particular to a novel compact hydraulic winch with a brake mechanism and a speed reducing mechanism arranged in a winding drum, and especially relates to a hydraulic winch with a compact structure.

Background

The winch is a mechanical equipment manufactured by utilizing the hydraulic principle, is mainly used in various building, mining, ship and other heavy industrial fields to provide strong pulling force or pushing force, and the working principle is that the winch is driven to work by being pressed into a cylinder body through pump power.

Conventional winches are generally classified into a single spool and a dual spool structure, wherein a single spool hydraulic winch is relatively common in the market. For example, a novel winch with a winch braking force improving function is disclosed in patent publication number CN202625717U, and the main structure of the winch comprises a winch support, wherein a pneumatic braking device is arranged on one side of the winch support, a reduction gearbox device is arranged on the other side of the winch support, a hydraulic motor is arranged on the reduction gearbox device, a winding drum device is arranged above the base device and in the middle of the winch support, and a hydraulic braking oil cylinder is arranged on the outer side of the winch support.

The structure of the winch can be seen that the winch is provided with a reduction gearbox device, a pneumatic brake device, a hydraulic brake oil cylinder and other parts to achieve the purpose of controlling braking force, but the whole winch structure can be seen that the pneumatic brake device and the hydraulic brake oil cylinder are respectively arranged at the right end part of the winding drum to realize external arrangement, the structure of the whole winch can be definitely increased, and the winch occupies a larger installation space when being used under a plurality of narrow installation working conditions, so that the winch is not applicable; meanwhile, when the external structure is used in an outdoor environment, the problem of rust or corrosion of equipment caused by severe environments such as rain easily occurs.

Therefore, the utility model performs the optimal design on the basis of the existing winch structure, and therefore provides a compact hydraulic winch structure used under a narrow working condition, which is used for better solving the problems in the prior art.

Disclosure of utility model

The utility model aims to solve one of the technical problems, and adopts the following technical scheme: the hydraulic winch with the compact structure comprises a left side plate and a right side plate which are oppositely arranged, wherein the front end and the rear end of the left side plate and the front end and the rear end of the right side plate are respectively fixed at the tops of the strip-shaped bases at corresponding positions, a hollow winding drum is arranged between the left side plate and the right side plate, a built-in braking mechanism is arranged in a through cavity of the winding drum in a matched manner, the right end of the built-in braking mechanism is connected with a motor connecting disc, and the left end of the built-in braking mechanism is connected with a built-in speed reducing mechanism which is internally arranged in the through cavity; the built-in speed reducing mechanism comprises a planet carrier fixedly arranged on the inner side wall of the left side plate, a plurality of planet wheel shafts are arranged in the through cavity on the right side of the planet carrier at intervals along the circumferential direction of the through cavity, the left end of each planet wheel shaft is fixedly arranged in a mounting hole at the corresponding position of the planet carrier, a planet gear is respectively sleeved on the outer side wall of each planet wheel shaft, the outer side of each planet gear is respectively meshed with a gear ring assembly arranged on the outer side wall of the planet gear, the inner side of each planet gear is respectively meshed with the left end of a linkage shaft component, and the right end of the linkage shaft component is connected with the built-in braking mechanism.

In any of the above aspects, preferably, the linkage shaft member includes a sun shaft horizontally disposed, a sun gear integrally formed at a left end of the sun shaft, a spline gear integrally formed at a right end of the sun shaft, the sun gear being configured to engage with each of the planetary gears in a circumferential direction thereof, the right end of the spline gear extending into the built-in brake mechanism and engaging with an inside thereof, and a through long hole being provided at a middle portion of the sun gear.

In any of the above schemes, preferably, a needle roller is installed at the center of the left end of the sun shaft, the left end of the needle roller movably extends into a needle hole at a position corresponding to the planet carrier, a straight-through type oil pressing cup is installed in a mounting hole of the planet carrier at one side of the needle roller, and the right end of the mounting hole at the position of the straight-through type oil pressing cup extends into a space at the end face of the sun gear and is communicated with the needle hole.

In any of the above solutions, it is preferable that a left end support bearing is mounted on an outer side wall of the planet carrier, a right end support bearing is mounted on an outer side wall of the built-in brake mechanism, and the left end support bearing and the outer side wall of the right end support bearing are respectively matched and abutted on an inner side wall of the through cavity of the winding drum.

In any of the above schemes, preferably, the gear ring assembly includes a gear ring fixing ring fixedly welded on an inner wall of the through cavity, a gear ring is fixedly installed at a left end of the gear ring fixing ring, each gear tooth of an inner ring of the gear ring is meshed with each planetary gear respectively, and an inner ring of the gear ring fixing ring is sleeved on the periphery of the sun shaft.

In any of the above schemes, preferably, the built-in braking mechanism includes a connecting sleeve sleeved and engaged on the periphery of the spline gear, a spline groove engaged with the spline gear is provided at a left end of a central hole of the connecting sleeve, a flat key groove connected with an output shaft key of an external driving motor is provided at a right end of the central hole of the connecting sleeve, a brake housing is sleeved and engaged on the periphery of the connecting sleeve, a right end of the brake housing is fixed on a left end face of the motor connecting disc, a friction plate baffle is fixedly mounted at a left end of the brake housing, a plurality of static friction plates are sequentially mounted in friction plate mounting cavities of the brake housing on the right side of the friction plate baffle at intervals, a dynamic friction plate is mounted between adjacent static friction plates, each static friction plate and each dynamic friction plate form a friction plate group, each static friction plate and each dynamic friction plate are sleeved and engaged on an outer side wall of the connecting sleeve, a friction plate adjusting plate is sleeved and engaged on an outer side wall of the connecting sleeve on the right side of the friction plate group, the friction plate adjusting plate is mounted in the piston assembly at the right side of the piston assembly, and the piston assembly is mounted in the piston assembly.

In any of the above solutions, preferably, the piston assembly includes a stepped piston movably sleeved on an outer side wall of a right side of the connecting sleeve, a left end face of the piston abuts against a right end face of the friction plate adjusting plate, oil guiding channels communicated with an inside of the piston cavity are formed in the motor connecting disc and the brake housing, and a disc spring with a gasket is installed in a space between the right end face of the piston and the left end face of the motor connecting disc.

In any of the above schemes, it is preferable that the outer side walls of the two ends of the winding drum are respectively fixedly welded with a wire rope limiting disc.

In any of the above schemes, preferably, a rope pressing device is disposed on the front side of the winding drum, the rope pressing device includes a rope pressing connecting shaft disposed horizontally, the left and right ends of the rope pressing connecting shaft are both movably hinged in the rotating holes corresponding to the left side plate and the rotating holes corresponding to the right side plate, a connecting frame is fixedly welded at the top of the rope pressing connecting shaft, rope pressing springs detachably mounted at the top of the left side plate and the top of the right side plate and corresponding to the corresponding positions are respectively and fixedly mounted at two sides of the connecting frame, a rope pressing roller is fixedly mounted at the top of the connecting frame, and a wear-resisting sleeve is sleeved on the outer side wall of the rope pressing roller.

In any of the above schemes, it is preferable that an inner lock catch and an outer lock catch are respectively fixedly welded on the side wall of the steel wire rope limiting disc on the left side and the outer side wall of the left side plate, and the hydraulic winch is connected between the two inner lock catches and the outer lock catch in a transportation state through locks.

Compared with the prior art, the utility model has the following beneficial effects:

1. The hydraulic winch integrally adopts a compact structural layout design, so that the overall dimension of the whole winch can be effectively reduced, and the hydraulic winch can be matched and suitable for being used in a narrow installation environment.

2. The built-in braking mechanism and the built-in speed reducing mechanism are arranged in the winding drum, so that the use of the built-in braking mechanism and the built-in speed reducing mechanism in severe outdoor working condition environments is effectively avoided, and the service lives of the built-in braking mechanism and the built-in speed reducing mechanism are effectively prolonged.

3. The sun shaft of the linkage shaft component adopts a hollow structure in the middle part, so that the weight of the whole sun shaft can be effectively reduced, and the whole sun shaft is cast and formed by adopting a rigid alloy, so that the use strength of the sun shaft can be ensured; in addition, the left end of the sun shaft is provided with a needle roller for fixed shaft lubrication, so that the smoothness during rotation is effectively ensured.

4. The rope pressing device provided by the utility model can realize control of rope pressing effect under the action of rope pressing springs at two ends, and meanwhile, the wear-resistant sleeve at the outer side of the rope pressing roller can be matched under the action of elasticity of the rope pressing springs to realize effective pressing and friction braking.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or features are generally identified by like reference numerals throughout the drawings. In the drawings, the elements or components are not necessarily drawn to scale.

Fig. 1 is a right side structure diagram of the present utility model.

Fig. 2 is a schematic view of the internal cross-sectional structure of the present utility model.

In the figure, 1, a left side plate; 2. a wear-resistant sleeve; 3. a left end support bearing; 4. rope pressing rollers; 5. a gear ring; 6. a planetary gear; 7. a planetary wheel shaft; 8. a right end support bearing; 9. a spline gear; 10. a sun shaft; 11. a through slot; 12. a friction plate baffle; 13. a brake housing; 14. a dynamic friction plate; 15. a static friction plate; 16. a right side plate; 17. an oil guide channel; 18. a motor connection pad; 19. a friction plate adjusting plate; 20. a disc spring; 21. a sun gear; 22. a piston; 23. a ring gear fixing ring; 24. a connecting shaft sleeve; 25. a wire rope limiting disc; 26. an inner lock catch; 27. an outer lock catch; 28. a straight-through type pressure oil filling cup; 29. needle roller; 30. a base; 31. a rope pressing connecting shaft; 32. a connecting frame; 33. and a rope pressing spring.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model. The specific structure of the utility model is shown in fig. 1-2.

Examples: the hydraulic winch with the compact structure comprises a left side plate 1 and a right side plate 16 which are oppositely arranged, wherein the front end and the rear end of the left side plate 1 and the rear end of the right side plate 16 are both fixed at the top of a strip-shaped base 30 at corresponding positions, a hollow winding drum is arranged between the left side plate 1 and the right side plate 16, a built-in braking mechanism is cooperatively arranged in a through cavity of the winding drum, the right end of the built-in braking mechanism is connected with a motor connecting disc 18, and the left end of the built-in braking mechanism is connected with a built-in speed reducing mechanism which is internally arranged in the through cavity; the built-in speed reducing mechanism comprises a planet carrier fixedly arranged on the inner side wall of the left side plate 1, a plurality of planet wheel shafts 7 are arranged in the through cavity on the right side of the planet carrier at intervals along the circumferential direction, the left end of each planet wheel shaft 7 is fixedly arranged in a mounting hole at the corresponding position of the planet carrier, a planet gear 6 is respectively sleeved on the outer side wall of each planet wheel shaft 7, the outer side of each planet gear 6 is respectively meshed with a gear ring 5 assembly arranged on the outer side wall of the planet gear 6, the inner side of each planet gear 6 is respectively meshed with the left end of a linkage shaft component, and the right end of the linkage shaft component is connected with the built-in braking mechanism. The hydraulic winch with the compact structure can transmit power to the built-in speed reducing mechanism when the driving motor runs, and drives the winding drum to rotate in a fixed shaft after the speed is reduced by the built-in speed reducing mechanism, so that the rope winding or unwinding of the steel wire rope wound on the winding drum is controlled, the smoothness of the whole rope winding and unwinding action is effectively ensured, in addition, the built-in braking mechanism can be used for realizing the braking as required, the braking of the linkage shaft component is realized by the braking of the built-in braking mechanism during the braking, and finally the locking of the corresponding whole built-in speed reducing mechanism is driven, thereby realizing the locking braking of the winding drum.

In any of the above aspects, it is preferable that the coupling shaft member includes a sun shaft 10 horizontally disposed, a sun gear 21 is integrally formed at a left end of the sun shaft 10, a spline gear 9 is integrally formed at a right end of the sun shaft 10, the sun gear 21 is configured to engage with each of the planetary gears 6 in a circumferential direction thereof, a right end of the spline gear 9 extends into the built-in brake mechanism and engages with the inside thereof, and a through slot 11 is provided at a middle portion of the sun gear 21.

The integral sun shaft 10, the sun gears 21 at the two ends and the spline gears 9 are of an integral structure, so that the structural strength of the integral linkage shaft made of high-strength alloy materials can be effectively ensured, and meanwhile, the light-weight arrangement is effectively realized by a mode that the middle part of the sun gear 21 is provided with a through long hole 11.

In any of the above solutions, it is preferable that a needle roller 29 is installed at the center of the left end of the sun shaft 10, the left end of the needle roller 29 movably extends into a needle hole at a position corresponding to the planet carrier, a through type oil pressing cup 28 is installed in an installation hole of the planet carrier at one side of the needle roller 29, and the right end of the installation hole at the through type oil pressing cup 28 extends into a space at the end face of the sun gear 21 and is communicated with the needle hole.

The roller pin 29 is arranged at the end part of the sun shaft 10, so that the flexibility of the sun shaft 10 during rotation can be effectively ensured, meanwhile, the corresponding through type pressure oil injection cup 28 is also arranged to ensure lubrication oil supply, and the phenomenon of friction overheating in the running process is effectively reduced.

In any of the above solutions, it is preferable that a left end support bearing 3 is mounted on an outer side wall of the planet carrier, a right end support bearing 8 is mounted on an outer side wall of the built-in brake mechanism, and the left end support bearing 3 and the outer side wall of the right end support bearing 8 are respectively matched and abutted on an inner side wall of a through cavity of the winding drum.

The right end support bearing 8 and the left end support bearing 3 are integrally matched to achieve the aim of supporting the whole winding drum and the Xinin, so that the stability of the winding drum in the rotating process is effectively ensured.

In any of the above solutions, it is preferable that the gear ring 5 assembly includes a gear ring fixing ring 23 fixedly welded on an inner wall of the through cavity, a gear ring 5 is fixedly installed at a left end of the gear ring fixing ring 23, each gear tooth of an inner ring of the gear ring 5 is meshed with each planetary gear 6, and an inner ring of the gear ring fixing ring 23 is sleeved on an outer periphery of the sun shaft 10.

The gear ring 5 assembly adopts the purpose of following rotation, and realizes the fixed-axis rotation of each planetary gear 6 by means of planet carrier positioning, so that the fixed-axis rotation of the whole planet carrier and the fixed-axis rotation of the gear ring 5 are ensured, the current following fixed-axis rotation of a winding drum fixedly welded and connected with the gear ring 5 can be driven in the fixed-axis rotation process of the gear ring 5, and the smoothness of the whole winding drum during operation is ensured.

In any of the above solutions, preferably, the built-in braking mechanism includes a coupling sleeve 24 sleeved and engaged on the periphery of the spline gear 9, a spline groove engaged with the spline gear 9 is provided at a left end of a center hole of the coupling sleeve 24, a flat key groove connected with an output shaft key of an external driving motor is provided at a right end of the center hole of the coupling sleeve 24, a brake housing 13 is sleeved and engaged on the periphery of the coupling sleeve 24, a friction plate baffle 12 is fixedly mounted at a left end of the brake housing 13, a plurality of static friction plates 15 are sequentially mounted in a friction plate mounting cavity of the brake housing 13 at a right side of the friction plate baffle 12 at intervals, a dynamic friction plate 14 is mounted between adjacent static friction plates 15, each static friction plate 15 and each dynamic friction plate 14 form a friction plate group, each static friction plate 15 and each dynamic friction plate 14 are sleeved and engaged on an outer side wall of the coupling sleeve 24, a friction plate baffle 12 is mounted at a right side wall of the coupling sleeve 24, a piston assembly is mounted at a right side wall 22 of the coupling sleeve 22, and a piston assembly is mounted at a right side wall 22 is mounted at a piston assembly at a position of the piston assembly.

The principle adopted by the integral built-in braking mechanism is the same as that of a traditional brake, the structure of the integral built-in braking mechanism is not innovative and improved, the abutting braking of the friction plate is controlled by the movement of the piston 22 during braking, so that the whole connecting shaft sleeve 24 is positioned, the power input on the left side can be cut off after the connecting shaft sleeve 24 is positioned, and the purpose of controlling the built-in speed reducing mechanism to brake is finally achieved.

In any of the above solutions, it is preferable that the piston 22 assembly includes a stepped piston 22 movably sleeved on the right outer side wall of the connecting sleeve 24, a left end surface of the piston 22 abuts against a right end surface of the friction plate adjusting plate 19, an oil guiding channel 17 communicating with the inside of the cavity of the piston 22 is provided on the motor connecting disc 18 and the brake housing 13, and a disc spring 20 with a gasket is installed in a space between the right end surface of the piston 22 and the left end surface of the motor connecting disc 18.

The combined oil guide channel 17 can ensure that the channels on each part are convenient to process during processing, and sealing measures are arranged at the contact positions of the adjacent channels, so that the smoothness and good sealing performance of the whole oil guide channel 17 during oil guide are effectively ensured.

In any of the above schemes, it is preferable that the wire rope limiting plates 25 are fixedly welded to the outer side walls of both ends of the winding drum, respectively.

The wire rope limiting disc 25 welded on two sides can ensure that the wire rope wound in the rope groove of the winding drum realizes limiting in the left-right reverse direction, effectively prevents the situation that the wire rope shifts to the left and right sides, and plays a good limiting role.

In any of the above schemes, it is preferable that a rope pressing device is disposed on the front side of the winding drum, the rope pressing device includes a rope pressing connecting shaft 31 disposed horizontally, the left and right ends of the rope pressing connecting shaft 31 are both movably hinged in the rotating holes corresponding to the positions of the left side plate 1 and the rotating holes corresponding to the positions of the right side plate 16, a connecting frame 32 is fixedly welded on the top of the rope pressing connecting shaft 31, rope pressing springs 33 which are detachably mounted on the top of the left side plate 1 and the top of the right side plate 16 corresponding to the positions are respectively and fixedly mounted on two sides of the connecting frame 32, a rope pressing roller 4 is fixedly mounted on the top of the connecting frame 32, and a wear-resisting sleeve 2 is sleeved on the outer side wall of the rope pressing roller 4.

The rope pressing device adopts rope pressing springs 33 on two sides to cooperate to realize the pressing of the steel wire rope wound on the winding drum, thereby ensuring that the phenomena of rope warping and rope skipping are prevented when the winch operates, and the rope pressing needs with different forces can be realized by changing different rope pressing springs 33; meanwhile, the effective positioning of the whole row of steel wire ropes can be ensured by the abutting and pressing of the rope pressing roller 4, the wear-resistant sleeve 2 is matched, the durability and wear resistance of the whole steel wire ropes and the wear-resistant sleeve 2 relative friction can be ensured, and the service life is ensured.

In any of the above solutions, it is preferable that an inner lock catch 26 and an outer lock catch 27 are respectively welded on the side wall of the left wire rope limiting plate 25 and the outer side wall of the left side plate 1, and the hydraulic winch is connected between the two inner lock catches 26 and the outer lock catch 27 through locks in a transportation state.

The winch needs to be transported on the vehicle before the oil pump is not installed, so that the inner lock catch 26 and the outer lock catch 27 are arranged in the winch, the relative stability of the whole winding drum in the transportation process of the shaking vehicle can be effectively guaranteed through the matched lock, the situation that the winding drum rotates accidentally due to excessive jolt is prevented, and safe operation is guaranteed.

The specific working principle is as follows: the compact hydraulic winch is directly matched with an external driving motor when in use, the driving motor is directly arranged at the motor connecting disc 18, and the whole winch structure can be used after the installation is finished.

When the winch runs, the steering of the driving motor is controlled to realize rope winding and unwinding, meanwhile, when the driving motor runs, power is transmitted to the built-in speed reducing mechanism, the winding drum is driven to rotate in a fixed shaft after the speed is reduced by the built-in speed reducing mechanism, so that the rope winding or unwinding of the steel wire rope wound on the winding drum is controlled, and the smoothness of the whole rope winding and unwinding action is effectively ensured.

The braking on demand can be realized by the built-in braking mechanism, and the braking on the linkage shaft component is realized by the braking of the built-in braking mechanism during braking, so that the corresponding locking of the whole built-in speed reducing mechanism is finally driven, and the locking braking on the winding drum is realized.

During transmission, the fixed shaft rotation of each planet gear 6 is realized by means of planet carrier positioning, so that the fixed shaft rotation of the whole planet carrier and the fixed shaft rotation of the gear ring 5 are ensured, the current rotation of the following fixed shaft of the winding drum fixedly welded and connected with the gear ring 5 can be driven in the fixed shaft rotation process of the gear ring 5, and the smoothness of the whole winding drum during operation is ensured.

In conclusion, the hydraulic winch is integrally designed by adopting a compact structural layout, so that the overall dimension of the whole winch can be effectively reduced, and meanwhile, the hydraulic winch can be matched and suitable for being used in a narrow installation environment; the built-in braking mechanism and the built-in speed reducing mechanism are arranged in the winding drum, so that the use of the built-in braking mechanism and the built-in speed reducing mechanism in severe outdoor working conditions is effectively avoided, and the service lives of the built-in braking mechanism and the built-in speed reducing mechanism are effectively prolonged; the sun shaft 10 of the linkage shaft part adopts a hollow structure in the middle part, so that the weight of the whole sun shaft 10 can be effectively reduced, and the whole sun shaft 10 is cast and formed by adopting a rigid alloy, so that the use strength of the sun shaft can be ensured; in addition, a needle roller 29 is arranged at the left end of the sun shaft 10 to perform fixed-axis lubrication, so that the smoothness during rotation is effectively ensured; the configured rope pressing device can realize the control of rope pressing effect under the action of rope pressing springs 33 at two ends, and meanwhile, the wear-resistant sleeve 2 at the outer side of the rope pressing roller 4 can be matched under the action of elasticity of the rope pressing springs 33 to realize effective pressing and friction braking.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; any alternative modifications or variations to the embodiments of the present utility model will fall within the scope of the present utility model for those skilled in the art.

The present utility model is not described in detail in the present application, and is well known to those skilled in the art.

Claims

1. Compact structure hydraulic winch, its characterized in that: the device comprises a left side plate and a right side plate which are oppositely arranged, wherein the front end and the rear end of the left side plate and the front end and the rear end of the right side plate are respectively fixed at the tops of strip-shaped bases at corresponding positions, a hollow winding drum is arranged between the left side plate and the right side plate, a built-in braking mechanism is arranged in a through cavity of the winding drum in a matched manner, the right end of the built-in braking mechanism is connected with a motor connecting disc, and the left end of the built-in braking mechanism is connected with a built-in speed reducing mechanism which is internally arranged in the through cavity; the built-in speed reducing mechanism comprises a planet carrier fixedly arranged on the inner side wall of the left side plate, a plurality of planet wheel shafts are arranged in the through cavity on the right side of the planet carrier at intervals along the circumferential direction of the through cavity, the left end of each planet wheel shaft is fixedly arranged in a mounting hole at the corresponding position of the planet carrier, a planet gear is respectively sleeved on the outer side wall of each planet wheel shaft, the outer side of each planet gear is respectively meshed with a gear ring assembly arranged on the outer side wall of the planet gear, the inner side of each planet gear is respectively meshed with the left end of a linkage shaft component, and the right end of the linkage shaft component is connected with the built-in braking mechanism.

2. The compact hydraulic winch according to claim 1, wherein: the linkage shaft component comprises a sun shaft which is horizontally arranged, a sun gear is integrally formed at the left end of the sun shaft, a spline gear is integrally formed at the right end of the sun shaft, the sun gear is used for being meshed with each planetary gear in the circumferential direction of the sun gear, the right end of the spline gear extends to the inside of the built-in braking mechanism and is meshed with the inside of the built-in braking mechanism, and a through long hole is formed in the middle of the sun gear.

3. The compact hydraulic winch according to claim 2, wherein: the center of the left end of the sun shaft is provided with a needle roller, the left end of the needle roller movably extends into a needle hole at the corresponding position of the planet carrier, a straight-through type oil pressing cup is arranged in a mounting hole of the planet carrier at one side of the needle roller, and the right end of the mounting hole at the position of the straight-through type oil pressing cup extends into a space at the end face of the sun gear and is communicated with the needle hole.

4. The compact hydraulic winch according to claim 3, wherein: the planetary gear is characterized in that a left end supporting bearing is arranged on the outer side wall of the planetary carrier, a right end supporting bearing is arranged on the outer side wall of the built-in braking mechanism, and the left end supporting bearing and the outer side wall of the right end supporting bearing are matched and abutted to the inner side wall of the through cavity of the winding drum.

5. The compact hydraulic winch according to claim 4, wherein: the gear ring assembly comprises a gear ring fixing ring fixedly welded on the inner wall of the through cavity, a gear ring is fixedly arranged at the left end of the gear ring fixing ring, gear teeth of the inner ring of the gear ring are respectively meshed with the planetary gears, and the inner ring of the gear ring fixing ring is sleeved on the periphery of the sun shaft.

6. The compact hydraulic winch according to claim 5, wherein: the built-in braking mechanism comprises a connecting shaft sleeve which is sleeved and meshed with the periphery of the spline gear, a spline groove which is meshed with the spline gear is formed in the left end of a central hole of the connecting shaft sleeve, a flat key groove which is connected with an output shaft key of an external driving motor is formed in the right end of the central hole of the connecting shaft sleeve, a brake shell is sleeved and connected on the periphery of the connecting shaft sleeve, the right end of the brake shell is fixed on the left end face of the motor connecting disc, a friction plate baffle is fixedly arranged on the left end of the brake shell, a plurality of static friction plates are sequentially arranged in friction plate mounting cavities of the brake shell on the right side of the friction plate baffle at intervals, a movable friction plate is respectively arranged between adjacent static friction plates, each static friction plate and each movable friction plate form a friction plate group, each static friction plate and each movable friction plate are sleeved on the outer side wall of the connecting shaft sleeve, a friction plate adjusting plate is sleeved and connected on the outer side wall of the connecting shaft sleeve on the right side of the friction plate group, the friction plate adjusting plate is positioned in the friction plate mounting cavity of the brake shell, a piston assembly is arranged on the piston assembly, and the piston assembly is internally provided with a piston cavity.

7. The compact hydraulic winch according to claim 6, wherein: the piston assembly comprises a stepped piston movably sleeved on the outer side wall of the right side of the connecting shaft sleeve, the left end face of the piston is abutted to the right end face of the friction plate adjusting plate, oil guide channels communicated with the inside of the piston cavity are arranged on the motor connecting disc and the brake shell, and a disc spring with a gasket is arranged in a space between the right end face of the piston and the left end face of the motor connecting disc.

8. The compact hydraulic winch according to claim 7, wherein: and steel wire rope limiting plates are fixedly welded on the outer side walls of the two ends of the winding drum respectively.

9. The compact hydraulic winch according to claim 8, wherein: the front side of reel is provided with a rope pressing device, rope pressing device includes the rope pressing connecting axle that the level set up, both ends all activity hinge about pressing the rope connecting axle are right in the commentaries on classics hole of the corresponding position department of left side board in the commentaries on classics hole of the corresponding position department of right side board the top fixed welding of pressing the rope connecting axle has the link the both sides of link respectively fixed mounting have with the rope pressing spring of corresponding position department left side board top right side board top opening demountable installation the top fixed mounting of link has a rope pressing roller the wear-resisting cover is cup jointed on the lateral wall of rope pressing roller.