42results about How to "Prevent automatic rotation" patented technology

The invention provides a hinge locking device for a refrigerator door and a refrigerator. The hinge locking device for the refrigerator door comprises a hinge and a door buckle which are rotationallyconnected. The hinge is fixedly connected to a refrigerator body and used for bearing the door buckle and the refrigerator door. The door buckle is used for bearing and fixing the refrigerator door and rotationally connecting the refrigerator door to the hinge. The hinge is provided with locking teeth, and the door buckle is provided with elastic teeth. When the refrigerator door is gradually closed or opened, the elastic teeth and the locking teeth are in interference contact gradually. When the refrigerator door is in the closed and opened state, the elastic teeth and the locking teeth are clamped and limited by each other. Accordingly, the refrigerator door is buffered and limited during opening and closing operation, excessive force and untimely stopping are effectively prevented fromcausing the fact that refrigerator door collides, rebounds and shakes, the safety of objects on the refrigerator door and the structure of the refrigerator door are protected, and the service life ofthe refrigerator door is prolonged. When the refrigerator door is opened to the maximum angle, the refrigerator door is effectively limited and prevented from automatically rotating, and a user can conveniently take the objects from the refrigerator.

The invention discloses an overturning method utilizing an overturning device of a mining dump truck box hopper. The overturning method comprises the following steps that: a box hopper clamp matched with a box hopper to be overturned in structure and size is selected, and the box hopper clamp is connected with a driving shaft of the overturning device of the mining dump truck box hopper; after theoverturning device of the mining dump truck box hopper is connected with the box hopper, a rotation center line is guaranteed to coincide with a gravity center line perpendicular to the side face ofthe box hopper, and in order to prevent the clamp from moving on the box hopper when the box hopper is overturned, a check block can be welded to the box hopper; 1.5 times of safety coefficients are reserved for strength levels of selected steel wire ropes and lifting rings; two hoisting tools are selected to hoist the box hopper through the steel wire ropes tied to hoisting arms, and the height needs to meet the overturning condition of the box hopper; and a motor controller is operated to enable a motor to operate, a driving fluted disc is driven to drive the box hopper clamp to rotate through a driving shaft, namely, the box hopper is overturned along with the box hopper clamp, and the box hopper is placed on the ground after being rotated by 180 degrees, so that overturning operation of the box hopper is completed. Therefore, the safety risk of overturning the mining dump truck box hopper can be reduced.

The invention provides a refrigerator door hinge device and a refrigerator, which include: a hinge and a door buckle connected in rotation; the hinge is fixedly connected to the main body of the refrigerator for carrying the door buckle and the refrigerator door; the door buckle is used for carrying and fixing the refrigerator door , and the refrigerator door is rotatably connected to the hinge; the hinge is provided with lock teeth, and the door buckle is provided with spring teeth; when the refrigerator door is gradually closed or opened, the spring teeth and the lock teeth are gradually in interference contact, and when When the refrigerator door is closed or opened, the elastic teeth and the locking teeth engage with each other to limit the position. Furthermore, when the refrigerator door is opened and closed, it buffers and limits the refrigerator door, which effectively avoids the collision, rebound and shaking of the refrigerator door due to excessive force and untimely stop, and protects the safety and security of the items on the refrigerator door. The refrigerator door structure improves the service life of the refrigerator door; when the refrigerator door is opened to the maximum angle, the refrigerator door is effectively limited to prevent the refrigerator door from automatically rotating, and it is convenient for users to take items in the refrigerator.

The invention discloses a bucket turning device of a mining dump truck. The box bucket turning device of the mining dump truck comprises: a boom with a wire rope perforation at one end, and a drive shaft seat in the middle of the boom; a drive shaft that is installed in the shaft hole of the drive shaft seat; A fixture, one side of which has a box slot, and the other side is fixedly connected to one end of the drive shaft; a drive toothed plate, which is fixed on the other end of the drive shaft; and a motor assembly, which includes: a motor controller 1. A drive motor and a drive gear, the drive gear meshes with the drive toothed disc, the drive motor is arranged on the boom, drives the drive toothed disc through the drive gear, and drives the drive shaft and the bucket fixture to rotate. The box bucket turning device of the mining dump truck effectively reduces the safety risk of turning over the box bucket of the mining dump truck, and can improve the efficiency of turning the box bucket.

The invention discloses a vehicle suspension structure with high safety. The vehicle suspension structure comprises an upper fork arm, a lower fork arm, a wheel bearing, a damping strut, a connecting disc and hoops. The wheel bearing is connected with the connecting disc. The upper fork arm, the lower fork arm and the damping strut are each provided with a connecting end. The outer surfaces of the connecting ends are each in a thread shape. A screw hole is formed in the side face of the upper end of the connecting disc. The connecting ends are provided with nuts for matching and fixing. The surfaces of the connecting ends and the surfaces of the nuts are each provided with N locating holes, wherein each locating hole is in a thread shape. N locating screws penetrate the nuts and screw holes in the connecting ends. Each hoop is fixed to the outer surface of the corresponding nut to clamp and fix the nut. The vehicle suspension structure has the beneficial effects of being reasonable in design, high in safety, stable in component connection, meanwhile, flexible in disassembly, convenient to replace and good in universality.

The invention provides a rotating shaft device and electronic equipment. The rotating shaft device includes a rotating shaft; a first plate-shaped connecting part rotatably connected with the rotating shaft; a torsion mechanism for providing a first torsion force of the rotating shaft relative to the first plate-shaped connecting part; A torsion spring that provides the second torsion force of the rotating shaft relative to the first plate-shaped connecting member, the torsion spring is sleeved on the rotating shaft, and one end of the torsion spring is fixed on the rotating shaft, and the other end is fixed on the plate surface of the first plate-shaped connecting member ; Wherein, when the opening and closing angle of the first body and the second body connected by the rotating shaft device is 90 degrees, the torsion force of the torsion spring is zero; when the opening and closing angle of the first body and the second body is reduced by 90 degrees or The torsional force of torsion spring all increases progressively when increasing. When the opening angle of the first body is small or large, the present invention uses the first torsion force provided by the torsion mechanism and the second torsion force provided by the torsion spring to jointly support the first body, preventing the first body from automatically rotating due to gravity and improving the second body. The stability of the opening angle of one body relative to the second body.