CN222140177U - Rotary driving device of hydraulic excavator - Google Patents

Abstract

The utility model discloses a rotary driving device of a hydraulic excavator, which belongs to the technical field of rotary driving, wherein a rotary ring is rotatably arranged in a bottom shell, a lower supporting seat matched with a lower locking ring is movably arranged at the bottom of the bottom shell, a plurality of groups of first grooves are formed in the inner wall of the lower supporting seat, first balls are arranged in the first grooves, a concave ring matched with the first balls is formed in the outer wall of the lower locking ring, a plurality of groups of second grooves are formed in the inner wall of the upper supporting seat, second balls are arranged in the second grooves, an upper concave ring matched with the second balls is formed in the outer wall of the upper locking ring, a plurality of groups of locking structures are arranged on a top cover, and locking holes matched with the locking structures are formed in the inner wall of the bottom shell. The multiple locking can be carried out to the swivel becket through the cooperation of lower supporting seat and last supporting seat to friction when can greatly reduced rotates through the cooperation of first ball and second ball, and can carry out quick assembly disassembly to drain pan and top cap according to actual demand through locking structure.

Description

Rotary driving device of hydraulic excavator

Technical Field

The utility model relates to the technical field of slewing drive, in particular to a slewing drive device of a hydraulic excavator.

Background

The slewing drive device is also called a slewing reducer, a gear reducer, a turntable reducer, a slewing mechanism and a slewing drive pair. The speed reducer is of a speed reducer type which takes a slewing bearing as a main supporting member and takes a gear or a worm as a driving member as an auxiliary driving source, thereby realizing the functions of speed reduction and full-circle slewing. The rotary driving component mainly comprises a gear (or worm), a rotary support, a motor, a shell and a base. The gear type rotary drive can be divided into a tooth type rotary drive and a worm gear type rotary drive according to the variable speed transmission mode of the rotary drive, the two rotary drives can be respectively suitable for middle-high speed and low speed application occasions, the performance of the worm gear type rotary drive is superior to that of the tooth type rotary drive in bearing capacity, and when the enveloping worm drive is adopted, the bearing capacity, the deformation resistance and the transmission rigidity of the worm gear type rotary drive are further improved.

The application number of the patent application is CN 202321604336.X discloses an inner ring rotary driving device with small large load anti-overturning occupied space, which comprises a shell, wherein a rotary ring is arranged in the shell in a rotary mode, a ball groove is formed in the rotary ring, cylindrical balls are arranged in the ball groove, a rotating shaft is arranged in the shell in a rotary mode, a worm is fixedly connected to the outer portion of the rotating shaft, a worm wheel is fixedly connected to the outer portion of the rotary ring, and the worm wheel is meshed with the worm. The utility model has the beneficial effects that the first support seat and the second support seat can be detached from the shell when in actual use and replacement is carried out, so that the first support seat and the second support seat can be replaced without replacing the whole body, and the replacement cost is reduced.

The rotary driving device of the above comparison document is not easy to disassemble and assemble, lacks a quick locking structure, and has larger friction force when the rotating ring rotates, thereby influencing the rotating efficiency, so the rotary driving device of the hydraulic excavator is designed so as to solve the problems.

Disclosure of utility model

The utility model aims to solve the problems that the traditional slewing drive device is not easy to disassemble and assemble, a quick locking structure is lacking, and the friction force of a rotating ring is large during rotation, so that the rotation efficiency is influenced, and the like.

The technical scheme is that the rotary driving device of the hydraulic excavator comprises a bottom shell and a top cover, wherein a rotating ring is arranged in the bottom shell in a rotating mode, an upper locking ring is arranged above the rotating ring, a lower locking ring is arranged at the bottom of the rotating ring, a lower supporting seat matched with the lower locking ring is movably arranged at the bottom of the bottom shell, a plurality of groups of first grooves are formed in the inner wall of the lower supporting seat, a first spring is arranged in the first grooves, a first ball is arranged at the top of the first spring, a concave ring matched with the first ball is formed in the outer wall of the lower locking ring, an upper supporting seat matched with the upper locking ring is arranged at the bottom of the top cover, a plurality of groups of second grooves are formed in the inner wall of the upper supporting seat, a second spring is arranged in the second grooves, a second ball is arranged at the top of the second spring, an upper concave ring matched with the second ball is arranged on the outer wall of the upper locking ring, and a locking structure matched with the inner wall of the bottom shell is arranged on the top cover.

The locking structure comprises a locking groove formed in the top cover, a locking rod is movably arranged in the locking groove, a locking fan is fixedly arranged at the bottom of the locking rod, a locking block matched with the locking fan is arranged in the locking hole, an adjusting cap is arranged at the top of the locking rod, and a locking spring is further arranged between the adjusting cap and the locking groove.

As a still further proposal of the utility model, the locking fan is of a cross-shaped structure, and the locking block forms a passage of the locking fan.

As a still further scheme of the utility model, a convex ring is arranged at the bottom of the bottom shell, and a rotating groove matched with the convex ring is arranged at the bottom of the rotating ring.

As a still further proposal of the utility model, a plurality of groups of locking holes 15 are arranged at the bottom of the bottom shell 1, threaded holes 14 matched with the locking holes 15 are arranged at the bottom of the lower supporting seat 4, and the threaded holes 14 and the locking holes 15 are movably connected through bolts 16.

The utility model provides a slewing drive device of a hydraulic excavator through improvement, which has the following improvements and advantages compared with the prior art:

The utility model can carry out multiple locking on the rotating ring through the matching of the lower supporting seat and the upper locking ring as well as the matching of the upper supporting seat and the lower locking ring, and the friction force during the rotation of the rotating ring can be greatly reduced through the matching of the first ball and the lower concave ring as well as the second ball and the upper concave ring, thereby further improving the rotation efficiency. The locking structure can be used for quickly disassembling and assembling the bottom shell and the top cover according to actual requirements, and the practicality and the stability of the slewing drive device of the hydraulic excavator are greatly reduced.

Drawings

The utility model is further explained below with reference to the drawings and examples:

FIG. 1 is a perspective view of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A in accordance with the present utility model;

FIG. 4 is a cross-sectional view of the lower support base of the present utility model;

FIG. 5 is a bottom view of the present utility model;

Fig. 6 is an enlarged schematic view of the structure of the rotating ring in the present utility model.

Reference numerals illustrate:

1. bottom shell, 2, top cover, 3, rotating ring, 4, lower supporting seat, 5, upper supporting seat, 6, upper locking ring, 7, lower locking ring, 8, rotating groove, 9, lower concave ring, 10, upper concave ring, 11, first slot, 12, first spring, 13, first ball, 14, threaded hole, 15, locking hole, 16, bolt, 17, second slot, 18, second spring, 19, second ball, 20, convex ring, 21, locking structure, 22, locking groove, 23, locking rod, 24, locking fan, 25, adjusting cap, 26, locking spring, 27, lockhole, 28, locking block.

Detailed Description

The following detailed description of the present utility model will provide clear and complete description of the technical solutions of the embodiments of the present utility model, with reference to fig. 1 to 6, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a rotary driving device of a hydraulic excavator through improvement, as shown in fig. 1-6, the rotary driving device of the hydraulic excavator comprises a bottom shell 1 and a top cover 2, wherein a rotary ring 3 is rotationally arranged on the bottom shell 1, an upper locking ring 6 is arranged above the rotary ring 3, a lower locking ring 7 is arranged at the bottom of the rotary ring 3, a lower supporting seat 4 matched with the lower locking ring 7 is movably arranged at the bottom of the bottom shell 1, a plurality of groups of first grooves 11 are formed in the inner wall of the lower supporting seat 4, a first spring 12 is arranged in the first grooves 11, a first ball 13 is arranged at the top of the first spring 12, a concave ring 9 matched with the first ball 13 is formed in the outer wall of the lower locking ring 7, a plurality of groups of second grooves 17 are formed in the inner wall of the upper supporting seat 5, a second spring 18 is arranged in the second groove 17, a plurality of groups of second balls 19 are formed in the top of the second spring 18, a plurality of groups of upper locking balls 19 are formed in the outer wall of the upper locking ring 6, a plurality of groups of locking balls 21 are matched with the upper locking ring 10, and a locking structure 21 is arranged on the inner wall of the upper locking ring 1.

The utility model can carry out multiple locking on the rotating ring 3 through the matching of the lower supporting seat 4 and the upper locking ring 6 and the upper supporting seat 5 and the lower locking ring 7, and can greatly reduce the friction force when the rotating ring 3 rotates through the matching of the first ball 13 and the lower concave ring 9 and the second ball 19 and the upper concave ring 10, thereby further improving the rotating efficiency. And the locking structure 21 of the utility model can rapidly disassemble and assemble the bottom shell 1 and the top cover 2 according to actual demands, and the structure greatly reduces the practicability and the stability of the slewing drive device of the hydraulic excavator.

Referring to fig. 2-3, the locking structure 21 comprises a locking groove 22 formed in the top cover 2, a locking rod 23 is movably arranged in the locking groove 22, a locking fan 24 is fixedly arranged at the bottom of the locking rod 23, a locking block 28 matched with the locking fan 24 is arranged in a locking hole 27, an adjusting cap 25 is arranged at the top of the locking rod 23, and a locking spring 26 is further arranged between the adjusting cap 25 and the locking groove 22.

In this embodiment, the locking structure 21 is provided on the top cover 2 for convenience in quick locking of the bottom case 1. Wherein a locking spring 26 is arranged between the adjusting cap 25 and the locking groove 22, and the locking fan 24 is abutted against the inner wall of the top cover 2 under the action of the locking spring 26. When the adjustment cap 25 is rotated downward and pressed, the locking lever 23 and the locking fan 24 move toward the locking hole 27. When the locking wing 24 passes through the locking block 28 and then rotates the adjustment cap 25, the locking wing 24 is just behind the locking block 28 and is locked by the locking spring 26.

Referring to fig. 2-3, the locking tab 24 is of a cross-shaped configuration and the locking block 28 defines a passageway for the locking tab 24.

In the present embodiment, in order to rapidly lock the bottom chassis 1, the locking fans 24 are designed in a cross-shaped structure. After the locking wings 24 pass through the locking blocks 28, the locking wings 24 are rotated again, and the locking wings 24 are locked to the back of the locking blocks 28.

Referring to fig. 2 and 6, a convex ring 20 is provided at the bottom of the bottom case 1, and a rotation groove 8 matched with the convex ring 20 is provided at the bottom of the rotation ring 3.

In this embodiment, in order to further improve the stability of the rotating ring 3 during rotation, a rotating groove 8 is formed in the bottom of the rotating ring 3 to be engaged with the convex ring 20.

Referring to fig. 4-5, a plurality of groups of locking holes 15 are formed in the bottom of the bottom shell 1, threaded holes 14 matched with the locking holes 15 are formed in the bottom of the lower supporting seat 4, and the threaded holes 14 and the locking holes 15 are movably connected through bolts 16.

In this embodiment, in order to improve the stability of the lower support seat 4 and facilitate the quick assembly and disassembly thereof, a threaded hole 14 is formed at the bottom of the lower support seat 4, which is matched with the locking hole 15, and the threaded hole 14 and the locking hole 15 are movably connected by a bolt 16.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. The rotary driving device of the hydraulic excavator is characterized by comprising a bottom shell (1) and a top cover (2), wherein a rotating ring (3) is rotationally arranged on the bottom shell (1), an upper locking ring (6) is arranged above the rotating ring (3), a lower locking ring (7) is arranged at the bottom of the rotating ring (3), a lower supporting seat (4) matched with the lower locking ring (7) is movably arranged at the bottom of the bottom shell (1), a plurality of groups of first grooves (11) are formed in the inner wall of the lower supporting seat (4), first springs (12) are arranged in the first grooves (11), first balls (13) are arranged at the top of the first springs (12), a lower concave ring (9) matched with the first balls (13) is formed in the outer wall of the lower locking ring (7), an upper supporting seat (5) matched with the upper locking ring (6) is arranged at the bottom of the top cover (2), a plurality of groups of second grooves (17) are formed in the inner wall of the upper supporting seat (5), a plurality of groups of second springs (17) are arranged in the second grooves (18), an upper concave ring (10) matched with the second balls (19) is arranged on the outer wall of the upper locking ring (6), a plurality of groups of locking structures (21) are arranged on the top cover (2), and locking holes (27) matched with the locking structures (21) are arranged on the inner wall of the bottom shell (1).

2. The swing driving device of the hydraulic excavator according to claim 1, wherein the locking structure (21) comprises a locking groove (22) formed in the top cover (2), a locking rod (23) is movably arranged in the locking groove (22), a locking fan (24) is fixedly arranged at the bottom of the locking rod (23), a locking block (28) matched with the locking fan (24) is arranged in the locking hole (27), an adjusting cap (25) is arranged at the top of the locking rod (23), and a locking spring (26) is further arranged between the adjusting cap (25) and the locking groove (22).

3. A swing drive device for a hydraulic excavator according to claim 2, wherein the locking wing (24) has a cross-shaped configuration and the locking block (28) forms a passage for the locking wing (24).

4. The swing driving device of a hydraulic excavator according to claim 1, wherein a convex ring (20) is arranged at the bottom of the bottom shell (1), and a rotating groove (8) matched with the convex ring (20) is formed at the bottom of the rotating ring (3).

5. The swing driving device of a hydraulic excavator according to claim 1, wherein a plurality of groups of locking holes (15) are formed in the bottom of the bottom shell (1), threaded holes (14) matched with the locking holes (15) are formed in the bottom of the lower supporting seat (4), and the threaded holes (14) are movably connected with the locking holes (15) through bolts (16).