CN217555670U

CN217555670U - Double-drive slewing device for automobile crane

Info

Publication number: CN217555670U
Application number: CN202221279436.5U
Authority: CN
Inventors: 李力; 陈殿春; 黄惠繁; 唐宗武; 陈斌; 李纪贞; 刘学海; 许林; 胡梁山; 李涛; 李安良
Original assignee: Luzhou Changqi Special Hoisting Equipment Co ltd
Current assignee: Luzhou Changqi Special Hoisting Equipment Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-11
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses a double-drive slewing device for an automobile crane, which comprises a slewing bearing connected between a rotary table and a lower vehicle and a slewing mechanism arranged on the rotary table and used for driving the rotary table to rotate relative to the lower vehicle, wherein the slewing bearing comprises an outer ring and an inner gear ring movably arranged in the outer ring, the outer ring is connected with the rotary table, and the inner gear ring is connected with the lower vehicle; the utility model arranges two swing mechanisms on the turntable, when one swing mechanism breaks down, the other spare swing mechanism can be opened for replacement, the driving force for rotating the turntable is continuously provided, the normal hoisting operation of the crane is not influenced, and the working efficiency and the strain capacity of the crane are greatly improved; in addition, even when the slewing mechanisms are not in fault, the two slewing mechanisms can be periodically and alternately used in the ordinary hoisting operation, so that the fatigue of a single slewing mechanism can be greatly reduced, the long-time overload operation of the slewing mechanisms is avoided, and the service life of the slewing mechanisms is favorably prolonged.

Description

Double-drive slewing gear for automobile crane

Technical Field

The utility model belongs to the technical field of the mobile crane technique and specifically relates to a two slewer that drive for mobile crane.

Background

The automobile crane is one crane mounted on common or special automobile chassis and has driving cab separated from the crane control cab. The crane has the advantages of good maneuverability and rapid transfer. The defects are that supporting legs are needed during working, the vehicle cannot run under load, and the vehicle is not suitable for working on soft or muddy places. The chassis performance of the automobile crane is equal to that of a lorry with the same total weight of the whole automobile, and the automobile crane meets the technical requirements of road vehicles, so that the automobile crane can pass through various roads without resistance. The crane is provided with an upper control cabin and a lower control cabin, and the outriggers are required to be extended to keep stable during operation. The lifting capacity is wide and can be from 8 tons to 1600 tons, and the number of axles of the chassis can be from 2 to 10. Is the most widely used crane type with the greatest production.

The automobile crane comprises a lower automobile and an upper automobile, wherein the upper automobile is connected with the lower automobile through a rotating device, and the upper automobile can horizontally rotate relative to the lower automobile through the rotating device. The upper vehicle comprises a rotary table, a suspension arm, a control cabin and the like are arranged on the rotary table, and the rotating device comprises a rotating support connected between the rotary table and the lower vehicle and a rotating mechanism arranged on the rotary table and used for driving the rotary table to rotate relative to the lower vehicle. The conventional automobile crane is only provided with one slewing mechanism on a turntable, once the slewing mechanism breaks down, the crane cannot rotate on the crane, the hoisting operation cannot be continued, and the crane must be immediately stopped, overhauled and cleared of the fault. The swing mechanism influences the normal development of work in the maintenance process, the maintenance work is time-consuming and labor-consuming, and the work efficiency is greatly reduced.

SUMMERY OF THE UTILITY MODEL

Influence the technical problem that job schedule and maintenance work wasted time and energy after to traditional hoist rotation mechanism trouble, the utility model provides a two slewer that drive for mobile crane. Slewing mechanism and slewing bearing of prior art do the utility model discloses the reference.

The utility model adopts the technical proposal that: the double-drive slewing device for the automobile crane comprises a slewing bearing connected between a rotary table and a lower vehicle and a slewing mechanism arranged on the rotary table and used for driving the rotary table to rotate relative to the lower vehicle, wherein the slewing bearing comprises an outer ring and an inner gear ring movably arranged in the outer ring, the outer ring is connected with the rotary table, and the inner gear ring is connected with the lower vehicle; the slewing mechanism comprises a driving motor, a slewing reducer and a slewing gear which are sequentially connected, the slewing gear is meshed with the inner gear ring, the number of the slewing mechanisms is two, and the two slewing mechanisms are alternately used. The working principle of the slewing mechanism is as follows: the driving motor drives the rotary gear to rotate through the rotary speed reducer, and the rotary gear is meshed with the inner gear ring of the rotary support, so that the outer ring of the rotary support is driven to rotate relative to the inner gear ring in the rotation process of the rotary gear, the outer ring is connected with the rotary table, the inner gear ring is connected with the lower vehicle, and finally the rotary table can be driven to rotate relative to the lower vehicle in the rotation process of the rotary gear, so that the rotation of the upper vehicle is completed. Compare in the mode that sets up single rotation mechanism on the revolving stage in the tradition, the utility model discloses two rotation mechanism have been arranged on the revolving stage, and the hoist is when operating condition, and a rotation mechanism is in operating condition, and another rotation mechanism is then in non-operating condition. That is, one turning mechanism provides driving force, while the other turning mechanism does not provide driving force, and the turning gear of the turning mechanism which does not provide driving force is driven by the turning bearing to rotate synchronously with the turning gear of the turning mechanism which provides driving force, without being hindered. The purpose of this is to: when one slewing mechanism breaks down, the other slewing mechanism can be opened for replacement, and the driving force for rotating the rotary table is continuously provided, so that the slewing mechanism which breaks down is not needed to be overhauled immediately, after the hoisting operation is finished, the crane is overhauled and cleared of faults when being idle, the normal operation of the crane is not influenced, and the working efficiency and the strain capacity of the crane are greatly improved. In addition, even when the slewing mechanisms are not in fault, the two slewing mechanisms can be periodically and alternately used in ordinary hoisting operation, so that the fatigue of a single slewing mechanism can be greatly reduced, the long-time overload operation of the slewing mechanisms is avoided, and the service life of the slewing mechanisms is prolonged.

Furthermore, the two swing mechanisms are respectively arranged at the positions close to the front and the side of the rotary table, so that the two swing mechanisms are separated by a certain distance in the arrangement mode, and the disassembly, the assembly and the maintenance of the swing mechanisms are convenient; in addition, no interference is caused to other equipment on the turntable, so that the space above the turntable is used for installing the boom, and the left side of the turntable is used for installing the control cabin.

Furthermore, the swing mechanism is provided with a handle for controlling the swing mechanism to start and stop, the swing mechanism can be started and stopped only by moving the handle, and the control mode is simple, reliable and quick.

Furthermore, the rotary table comprises a bottom plate and a vertical plate, and lightening holes are formed in the vertical plate, so that the strength of the rotary table is guaranteed, the weight of the rotary table is reduced, and the load of the rotary device is also reduced.

Furthermore, the bottom plate is provided with a rib plate connected with the vertical plate, so that the stability of connection between the bottom plate and the vertical plate is ensured.

Furthermore, the slewing bearing is a single-row crossed roller type slewing bearing and has the advantages of compact structure, light weight, high manufacturing precision, small assembly clearance, stable operation, long service life and the like.

The utility model has the advantages that: the utility model arranges two swing mechanisms on the turntable, when one swing mechanism breaks down, the other spare swing mechanism can be opened for replacement, the driving force for rotating the turntable is continuously provided, the normal hoisting operation of the crane is not influenced, and the working efficiency and the strain capacity of the crane are greatly improved; in addition, even when the slewing mechanisms are not in fault, the two slewing mechanisms can be periodically and alternately used in ordinary hoisting operation, so that the fatigue of a single slewing mechanism can be greatly reduced, the long-time overload operation of the slewing mechanisms is avoided, and the service life of the slewing mechanisms is prolonged.

Drawings

Fig. 1 is a perspective view of the utility model i.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a front view of the present invention.

Fig. 4 is a bottom view of fig. 3.

Labeled as:

1. a turntable; 2. a slewing bearing; 3. a drive motor; 4. a rotary speed reducer; 5. a rotary gear; 6. a handle; 7. lightening holes; 8. a rib plate;

101. a base plate; 102. a vertical plate; 201. an outer ring; 202. and the inner gear ring.

Detailed Description

In the description of the present invention, it should be noted that the terms "front face", "upper", "lower", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further explained with reference to the accompanying drawings.

Examples

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the dual-drive slewing device for the mobile crane of the present invention includes a slewing bearing 2 connected between a turntable 1 and a lower vehicle and a slewing mechanism arranged on the turntable 1 for driving the turntable 1 to rotate relative to the lower vehicle, wherein the slewing bearing 2 includes an outer ring 201 and an inner gear ring 202 movably arranged in the outer ring, the outer ring 201 is connected with the turntable 1, and the inner gear ring 202 is connected with the lower vehicle; the two slewing mechanisms are alternately used and comprise a driving motor 3, a slewing reducer 4 and a slewing gear 5 which are sequentially connected, wherein the slewing gear 5 is in meshed connection with the inner gear ring 202. The working principle of the slewing mechanism is as follows: the driving motor drives the rotary gear to rotate through the rotary speed reducer, and the rotary gear is meshed with the inner gear ring of the rotary support, so that the outer ring of the rotary support is driven to rotate relative to the inner gear ring in the rotation process of the rotary gear, the outer ring is connected with the rotary table, the inner gear ring is connected with the lower vehicle, and finally the rotary table can be driven to rotate relative to the lower vehicle in the rotation process of the rotary gear, so that the rotation of the upper vehicle is completed. Compare in the mode that sets up single rotation mechanism on the revolving stage in the tradition, the utility model discloses two rotation mechanism have been arranged on the revolving stage, and the hoist is when operating condition, and a rotation mechanism is in operating condition, and another rotation mechanism is then in non-operating condition. That is, one swing mechanism provides a driving force, while the other swing mechanism does not provide a driving force, and a swing gear of the swing mechanism which does not provide a driving force is driven by the swing bearing to rotate synchronously with the swing gear of the swing mechanism which provides a driving force, without being hindered. The purpose of this is to: when one slewing mechanism breaks down, the other slewing mechanism can be opened for replacement, and the driving force for rotating the rotary table is continuously provided, so that the slewing mechanism which breaks down is not required to be overhauled immediately, and after the hoisting operation is finished, the crane can be overhauled and broken down when in idle, the normal operation of the crane is not influenced, and the working efficiency and the strain capacity of the crane are greatly improved. In addition, even when the slewing mechanisms are not in fault, the two slewing mechanisms can be periodically and alternately used in the ordinary hoisting operation, so that the fatigue of a single slewing mechanism can be greatly reduced, the long-time overload operation of the slewing mechanisms is avoided, and the service life of the slewing mechanisms is favorably prolonged.

Referring to fig. 1, 2, 3 and 4, in each embodiment, two swing mechanisms are respectively arranged at positions close to the front and the side of the turntable, so that the two swing mechanisms are arranged at a certain distance, and the disassembly, assembly and maintenance of the swing mechanisms are facilitated; in addition, no interference is caused to other equipment on the turntable, so that the space above the turntable is used for installing the boom, and the left side of the turntable is used for installing the control cabin.

Referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, the swing mechanism is provided with the handle 6 for controlling the start and stop of the swing mechanism, the start and stop of the swing mechanism can be realized only by moving the handle with the plate, and the control mode is simple, reliable and fast.

Referring to fig. 1, the turntable 1 of the present embodiment includes a bottom plate 101 and an upright plate 102, and the upright plate 102 is provided with a lightening hole 7, so as to reduce the weight of the turntable, and thus reduce the load of the slewing device, while ensuring the strength of the turntable.

Referring to fig. 1, in this embodiment, a rib plate 8 connected to a vertical plate 102 is disposed on a bottom plate 101, so as to ensure the stability of connection between the bottom plate and the vertical plate.

The slewing bearing 2 of the embodiment adopts a single-row crossed roller type slewing bearing, and has the advantages of compact structure, light weight, high manufacturing precision, small assembly clearance, stable operation, long service life and the like.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The double-drive slewing device for the automobile crane comprises a slewing bearing (2) connected between a turntable (1) and a lower vehicle and a slewing mechanism arranged on the turntable (1) and used for driving the turntable (1) to rotate relative to the lower vehicle, wherein the slewing bearing (2) comprises an outer ring (201) and an inner gear ring (202) movably arranged in the outer ring, the outer ring (201) is connected with the turntable (1), and the inner gear ring (202) is connected with the lower vehicle; the slewing mechanism comprises a driving motor (3), a slewing reducer (4) and a slewing gear (5) which are sequentially connected, and the slewing gear (5) is in meshing connection with the inner gear ring (202).

2. A double drive swivel arrangement for a truck crane according to claim 1, wherein said two swivel means are arranged close to the front and the side of the turntable, respectively.

3. A double-drive slewing device for mobile cranes according to claim 1, characterized in that the slewing mechanism is provided with a handle (6) for controlling the start-stop of the slewing mechanism.

4. Double-drive slewing device for mobile cranes according to claim 1, characterized in that the turntable (1) comprises a base plate (101) and a riser (102), the riser (102) being provided with lightening holes (7).

5. Double-drive slewing device for a mobile crane according to claim 4, characterized in that the bottom plate (101) is provided with a rib plate (8) connected to the vertical plate (102).

6. A double drive swivel arrangement for truck cranes according to claim 1, characterized in that the swivel support (2) is a single row cross-roller swivel support.