CN204628433U - Single power source double-worm driven slewing drive unit - Google Patents

Abstract

The utility model relates to a single power source double worm drive rotary drive device, which includes a base (1), and the base (1) includes a seat ring (1.1), a first shaft shell (1.2) and a second shaft shell (1.3), the centerline of the first axle housing (1.2) is arranged non-parallel to the centerline of the second axle housing (1.3), and a slewing bearing (2) is arranged inside the seat ring (1.1), and the first A first worm (3) is provided in a shaft housing (1.2), a second worm (4) is provided in the second shaft housing (1.3), and a first worm gear ( 5), the lower end of the second worm (4) is provided with a second worm wheel (6), and a third worm (7) is provided between the first worm wheel (5) and the second worm wheel (6). The outer ends of the three worms (7) are connected with a motor (8). The utility model discloses a single power source double worm drive rotary drive device, which has the advantages of compact structure, low cost and stable transmission.

Description

Single power source double worm drive rotary drive device

technical field

The utility model relates to a rotary drive device, in particular to a rotary drive device driven by a single power source and double worms, which is widely used in various transmission mechanisms that require relative rotation of upper and lower parts, especially heavy-duty transmission systems.

Background technique

At present, because the slewing drive device integrates the slewing bearing and the worm gear structure, it can bear axial force, radial force and overturning moment at the same time, so it is widely used in construction machinery, port machinery, mining machinery and other industries. At present, there are two forms: one is single worm transmission, that is, only one worm is arranged outside the slewing bearing, which can only be used to transmit small torque; the other is double worm transmission, that is, the two worms of the slewing Two worms are arranged in parallel on the side, and two motors are used to drive the two worms respectively to drive the slewing bearing to rotate, which can be used to transmit large torque. The disadvantages are: (1) Two motors are required for transmission, the structure is compact, and the cost is high; (2) The synchronization is not good and the transmission is not stable.

Contents of the invention

The purpose of the utility model is to overcome the above disadvantages and provide a single power source double worm drive rotary drive device, which has a compact structure, low cost and stable transmission.

The purpose of this utility model is achieved in this way: a single power source double worm drive rotary drive device, which includes a base, the base includes a seat ring, a first shaft shell and a second shaft shell, the first shaft The housing and the second shaft housing are respectively located on the left and right sides of the seat ring, the center line of the first shaft housing is not parallel to the center line of the second shaft housing, a slewing bearing is arranged in the seat ring, and the first shaft A first worm is arranged in the casing, a second worm is arranged in the second shaft casing, the first worm and the second worm are respectively engaged with the outer ring of the slewing bearing, and the lower end of the first worm is arranged with a first worm wheel , the lower end of the second worm is provided with a second worm wheel, a third worm is provided between the first worm wheel and the second worm wheel, and the third worm meshes with the first worm wheel and the second worm wheel respectively, and the first worm wheel meshes with the second worm wheel respectively. The outer ends of the three worms are connected with motors.

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

The utility model is a rotary driving device driven by a single power source and double worms. It drives two worms through a motor. The utility model has the advantages of compact structure, low production cost, good synchronization and stable transmission, and can be used in occasions where relatively large torque is transmitted.

Description of drawings

Fig. 1 is a structural schematic diagram of a single power source double worm drive rotary drive device of the present invention.

Fig. 2 is a sectional view along line A-A of Fig. 1 .

Fig. 3 is a B-B sectional view of Fig. 1 .

in:

base 1

Seat 1.1

1st axle housing 1.2

Second axle housing 1.3

Slewing ring 2

first worm 3

second worm 4

first worm gear 5

Second worm gear 6

third worm 7

motor 8.

Detailed ways

Referring to Figures 1 to 3, the utility model is a single power source double worm drive rotary drive device, which includes a base 1, the base 1 includes a seat ring 1.1, a first shaft shell 1.2 and a second shaft shell 1.3, The first shaft housing 1.2 and the second shaft housing 1.3 are respectively located on the left and right sides of the seat ring 1.1, and the center line of the first shaft housing 1.2 is arranged non-parallel to the center line of the second shaft housing 1.3, that is, the first shaft housing The center line of 1.2 forms a certain angle with the center line of the second shaft housing 1.3, the slewing bearing 2 is arranged in the seat ring 1.1, the first worm 3 is arranged in the first shaft housing 1.2, and the second shaft A second worm 4 is arranged inside the shell 1.3, and the first worm 3 and the second worm 4 are respectively engaged with the outer ring of the slewing bearing 2. The lower end of the first worm 3 is provided with a first worm wheel 5, and the second worm 4 The lower end is provided with a second worm wheel 6, and a third worm 7 is arranged between the first worm wheel 5 and the second worm wheel 6, and the third worm 7 is meshed with the first worm wheel 5 and the second worm wheel 6 respectively, so The outer end of the third worm 7 is connected with a motor 8 .

Claims (1)

1. a single power source double-worm driven slewing drive unit, it is characterized in that: it comprises pedestal (1), described pedestal (1) comprises seat ring (1.1), first axle housing (1.2) and the second axle housing (1.3), described first axle housing (1.2) and the second axle housing (1.3) lay respectively at seat ring (1.1) left and right sides, the center line of described first axle housing (1.2) and the non-parallel layout of center line of the second axle housing (1.3), pivoting support (2) is provided with in described seat ring (1.1), the first worm screw (3) is provided with in described first axle housing (1.2), the second worm screw (4) is provided with in described second axle housing (1.3), described first worm screw (3) and the second worm screw (4) are meshed with pivoting support (2) outer ring respectively, described first worm screw (3) lower end is provided with the first worm gear (5), described second worm screw (4) lower end is provided with the second worm gear (6), the 3rd worm screw (7) is provided with between described first worm gear (5) and the second worm gear (6), described 3rd worm screw (7) is meshed with the first worm gear (5) and the second worm gear (6) respectively, described 3rd worm screw (7) outer end is connected with motor (8).