Slewing bearing

About: Slewing bearing is a research topic. Over the lifetime, 1498 publications have been published within this topic receiving 5309 citations.

Effect of high-strength bolts and supporting structures on the carrying capacity of three-row roller slewing bearings:

Abstract: Three-row roller slewing bearings are the core components of large-scale rotating equipment. A large structural size and heavy load conditions require an extremely high carrying capacity. The inner...

Overload protective device for central-transmission mud scraper

Abstract: The invention relates to an overload protective device for a central transmission mud scraper. The overload protective device can prevent torques from overloading by means of monitoring torque values and aims at avoiding damaging a transmission mechanism due to overlarge load. To realize the purpose, a torque measuring device (4) is installed between a motor (6) and a speed changer (3) to transmit torque signals to a programmable controller (5) to control opening and closing of the motor (6). When in work, a working resistance torque is first transmitted to a slewing bearing (1), then transmitted to the speed changer (3) by the slewing bearing (1), and finally transmitted to the torque measuring device (4). Further, the resistance torque is outputted by a torque sensor (42) to the programmable controller (5); the motor (6) is controlled by setting rating load of the speed changer (3) inside the programmable controller (5), thereby preventing a driving device from overloading and protecting the mud scraper. Besides, the torque sensor (42) is connected with the speed changer (3) via involute spline pairs (44), and power is transmitted stably.

Rotary conveyor belt conveyor with controllable angle

Abstract: The utility model provides a rotary conveyor belt conveyor with a controllable angle The rotary conveyor belt conveyor comprises a main conveyor body, wherein the main conveyor body is arranged on a bracket; a conveyor belt is matched with a conveyor belt driving motor; an outer ring of a slewing bearing is connected with the bracket; an inner ring is connected with a base through a bolt; a gear is matched with an outer tooth of the slewing bearing; a rotary motor is matched with the gear; a center shaft of the slewing bearing is connected with a rotating shaft of an encoder; and an angle controller is connected with the rotary motor through a lead and controls the rotary motor to start, and stop and turn round According to the rotary conveyor belt conveyor with the controllable angle, provided by the utility model, the slewing bearing, the encoder, the angle controller, the rotary motor and the gear are additionally arranged on the basis of an existing conveyor, and the angle controller controls the rotary motor to start, stop and turn round through an electric signal which is fed back by the encoder, so that the rotating angle of the conveyor can be accurately controlled, the targets of exactly controlling the rotating angle and accurately conveying materials by the conveyor in a directed manner are achieved

Slewing forklift loader with telescopic boom

Abstract: The utility model discloses a slewing forklift loader with a telescopic boom, which includes a loader frame (10), a front X-shaped support leg (19) at the front end of the loader frame (10), a telescopic boom structure, a driver's cab (7) and a balance weight (11). A slewing bearing (15) is arranged at the upper part of the loader frame (10); a slewing platform (9) is arranged on the slewing bearing (15); the telescopic boom structure, the driver's cab (7) and the balance weight (11) are arranged on the slewing platform (9); and a rear X-shaped support leg (12) is arranged at the rear end of the loader frame (10). The utility model provides the slewing forklift loader with the telescopic boom, which has wide operating area and good environmental suitability.

Self-propelled reversed loader

Abstract: The invention relates to a self-propelled reversed loader applied to the industry of self-propelled reversed loader feeding conveyer devices and self-propelled reversed loader unloading conveyer devices. A slewing device consists of a slewing bearing, a swinging base, a slewing driving device, a first thread connecting piece and a second thread connecting piece; the swinging base is welded by a steel plate, and the lower part of the swinging base is of a circular structure; the circular structure is provided with a bolt through hole b connected with the slewing bearing; the two sides of the upper part of the swinging base are respectively provided with a pin shaft hole c; the pin shaft hole c is used for the direct pin joint between the swinging base and a steel structure at the unloading end part of the feeding conveyer device; the slewing bearing is connected with the swinging base by virtue of the first thread connecting piece; and the slewing bearing 1 is connected with a main tower by virtue of the second thread connecting piece. The slewing device with a horizontal micro-swing function is additionally arranged onto the feeding conveyer device, and the feeding conveyer device is driven to perform rotary motion relative to the main tower by the slewing device along the horizontal direction and the vertical direction, so that the slewing device is small in space size, a support is convenient to assemble, and the working efficiency of transportation of materials can be improved.