1. A lifting apparatus, comprising:

a first support device;

a turning device;

a suspension arm;

a second support device;

the first supporting device is connected with the rotating device;

the slewing device is connected with the suspension arm;

the second supporting device is connected with the rotating device.

2. A lifting device as claimed in claim 1, characterized in that:

the slewing device comprises

A drive device;

the second support means comprises a gear ring;

the driving device is connected with the gear ring;

the driving device is arranged on the side opposite to the suspension arm.

3. A lifting device as claimed in claim 2, characterized in that:

the slewing device comprises a joint bearing.

Background

In the field of oil and gas, a hoisting device is used for carrying out hoisting operation.

Generally, a hoisting device drives a gear ring to rotate by means of a driving device, the driving device is usually installed on one side of a suspension arm, the load of the suspension arm is large, the stress at the joint of the suspension arm and a supporting device is also large, the driving device is not in good contact with the gear ring, the gear ring is not in good contact with the driving device, the transmission efficiency is low, and the hoisting device is easy to damage.

Disclosure of Invention

In view of the above, it is desirable to provide a lifting device that is fast and convenient.

A lifting apparatus, comprising:

a first support device;

a turning device;

a suspension arm;

a second support device;

the first supporting device is connected with the rotating device;

the slewing device is connected with the suspension arm;

the second supporting device is connected with the rotating device.

The slewing device comprises

A drive device;

the second support means comprises a gear ring;

the driving device is connected with the gear ring;

the driving device is arranged on the side opposite to the suspension arm.

The slewing device further comprises a joint bearing.

Due to the adoption of the technical scheme, the invention has the beneficial effects that:

because the driving device is arranged at the position of one side opposite to the suspension arm, the deformation of the driving device is relatively small, the joint bearing adjusts the clearance between the driving device and the gear ring of the second supporting device, which is generated due to the deformation, the transmission efficiency is high, the service life is prolonged, and the purposes of reducing the cost and improving the efficiency are achieved.

Drawings

FIG. 1 is a schematic diagram of the present invention.

FIG. 2 is a schematic view of a turning device of the present invention.

Fig. 3 is a partial schematic view of I of fig. 2.

Fig. 4 is a schematic top view of the turning device of the present invention.

Fig. 5 is a schematic view a-a of fig. 4.

Fig. 6 is a schematic view B-B of fig. 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

1-6, a lifting device comprising a first support means 4, a slewing device 2, a boom 3, a second support means 1, the first support means 4 being connected to the slewing device 2 at 2b, the slewing device 2 being hinged to the boom 3 at 2a, the second support means 1 being connected to the slewing device 2.

The slewing device 2 comprises a basic body 20, a drive 21, the second support 1 comprising a toothed ring 16, the drive 21 being connected to the toothed ring 16, the drive 21 being on the side opposite the boom 3.

The turning device 2 further comprises a knuckle bearing 213, and the knuckle bearing 213 is connected with the driving device 21, so that the contact gap between the driving device 21 and the gear ring 16 can be automatically adjusted.

The driving device 21 comprises a driving mechanism 214, a roller 215 and a connecting pin shaft 212, wherein the driving mechanism 214 is connected with the base body 20 through the connecting pin shaft 212, the roller 215 is connected with a groove of the gear ring 16 to ensure that the driving mechanism 214 is in contact with the gear ring 16, the connecting pin shaft 212 is connected with the base body 20 through a joint bearing 213, and the driving mechanism 214 is connected with the base body 20 through the connecting pin shaft 212. Since the knuckle bearing 213 can be automatically adjusted, the contact gap between the drive mechanism 214 and the ring gear 16 can be automatically adjusted.

Due to the adoption of the technical scheme, the invention has the beneficial effects that:

because the driving device is arranged at the position of one side opposite to the suspension arm, the deformation of the driving device is relatively small, the joint bearing adjusts the clearance between the driving mechanism and the gear ring of the second supporting device, which is generated by the deformation, the transmission efficiency is high, the service life is prolonged, and the purposes of reducing the cost and improving the efficiency are achieved.

In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.