A stairway safety rail system for assisting in ascending and descending a staircase. The stairway safety rail system includes a rail having a channel disposed along a longitudinal axis and a guide block slidably joined to the channel having a plurality of bearings that can move the guide block along the longitudinal axis. A pivot assembly having a rotatable sleeve and a pivot slot secures to the guide block. A handle removably secures to the rotatable sleeve, wherein the rotatable sleeve is pivotally disposed in a working configuration and stored configuration within the pivot slot via a spring loaded release pin. In an alternative embodiment, the plurality of bearings within the guide block each have an adjustable tension, the handle is telescopically adjustable, and a braking strip is applied to a lower end of the channel to restrict movement of the bearings of the guide block.

Stairway safety rail system

The invention provides a rolling-axis-locking barrier-free railing. The rolling-axis-locking barrier-free railing comprises first supports, second supports and a handrail, wherein the two second supports are seamlessly welded between the two first supports, the handrail is arranged at one sides of the second supports, the second supports move front and back along the handrail, and a movable assembly is arranged in the second supports; a locking assembly is movably connected to the interior of the movable assembly through bolts, a supporting assembly is fixedly connected to one side of the movable assembly, the movable assembly comprises a first slide groove and a second slide groove, the first slide groove is parallelly aligned with the second slide groove, a pulley is embedded in the first slide groove, and a fixed shaft is seamlessly welded to one side of the pulley. According to the rolling-axis-locking barrier-free railing, protrusions are arranged at the tops of rotary bayonet locks and meshed with protrusions in the first slide groove, and when the handrail is pushed forwards, the rotary bayonet locks also follow the handrail to roll forward; since the protrusions are arranged at the tops of the rotary bayonet locks, when the rotary bayonet locks move in the opposite direction, the rotary bayonet locks can be meshed and fixed, thus the forward resistance is effectively increased, and grip strength is increased accordingly.

Rolling-axis-locking barrier-free railing

The invention discloses a zoom lens, a camera module and an electronic device. The zoom lens comprises a shell, a first lens assembly, a second lens assembly, a third lens assembly and a first drivingchip. The first driving chip comprises a first control end, a second control end, a third control end and a fourth control end, and the first control end and the second control end respectively control the second lens assembly and the third lens assembly to move relative to the first lens assembly so as to realize zooming of the zoom lens; the third control end is used for controlling the third lens assembly to move relative to the first lens assembly under the first target focal length so as to realize focusing of the zoom lens; and the fourth control end is used for controlling the third lens assembly to move relative to the first lens assembly under the second target focal length so as to realize focusing of the zoom lens, and the first target focal length is different from the secondtarget focal length. According to the invention, under the condition that the effective control bits of the driving chip are few, focusing control is achieved through the independent control end of the zoom lens, and the focusing moving precision is guaranteed.

Zoom lens, camera module and electronic device

The invention discloses a safety falling-prevention power line pole. The safety falling-prevention power line pole is characterized in that a cross-shaped main sliding groove is formed in one side of a line pole body; the two sides of the main sliding groove are each provided with a corresponding side groove and an inner sliding groove communicating with the side groove; the two ends of the main sliding groove are each provided with a roller; a lifting rope sliding on the rollers are arranged on the rollers arranged at the two ends; a safety sliding block and a T-shaped sliding block are connected to the two ends of the lifting rope correspondingly; the safety block is in a cross shape, corresponds to the main sliding groove and slides in the main sliding groove; the T-shaped sliding block slides in the side grooves formed in the two sides of the main sliding groove; the safety sliding block and the T-shaped sliding block are connected with a drawing rope A and a drawing rope B correspondingly; and the end portion of the drawing rope A and the end portion of the drawing rope B are connected with each other through a safety hook. According to the safety falling-prevention power line pole, the structure is simple, the trouble caused by use of climbing fasteners is avoided while a person climbs the power line pole, and physical safety is further ensured under the condition of overhead operation.

Safety falling-prevention power line pole

The invention discloses an automatic sliding type getting-up assistance device which comprises a sliding base, a connecting base, a rhombic telescopic frame, a bearing bracket, a transmission belt anda pressure sensor. The automatic sliding type getting-up assistance device is characterized in that the left end of the rear wall of the sliding base is fixedly provided with a driving motor, the output end of the driving motor penetrates through the rear wall of the sliding base and then is fixedly provided with a driving wheel, uniformly distributed fixed shafts are fixedly installed in the sliding base, and auxiliary wheels are rotatably installed on the fixed shafts; by utilizing the bearing bracket provided with the pressure sensor at the uppermost portion, a user presses the bearing bracket to enable the pressure sensor to sense pressure, the pressure is converted into current, the current is transmitted to an adjusting motor for controlling a telescopic bracket and the driving motor for controlling the transmission belt, and the rotating speeds of the adjusting motor and the driving motor are controlled through the obtained controllable current, so that the bearing bracket canbe kept horizontal. The device is accurately configured, so that the movement speed is exactly the same as the movement speed of the operator, and the user feels smooth and steady.

Automatic sliding type getting-up assistance device

The invention discloses safe stair handrails Each stair handrail is internally provided with a chain transmission chamber; the chain transmission chamber is internally provided with a rotatable chain; the rotatable chain includes 4-6 T-shaped connection hooks; each stair handrail internally includes a T-shaped sliding block sliding groove communicating with the chain transmission chamber; two ends of each stair handrail are provided with a clamping groove communicating with the sliding block sliding groove respectively; the sliding block sliding groove includes a safe sliding block and a cargo sliding block which slide in the sliding block sliding groove and are connected to the connection hooks of the chain; the safe sliding block is provided with a semi-circular safe support rod; a handrail joint is internally provided with a joint inner chamber corresponding to the sliding block sliding groove; and the joint inner chamber includes two lines of rolling wheels for allowing the safe sliding block and the cargo sliding block to pass The safe stair handrails are simple in structure, are easy to operate, and can protect a man climbing stairs during a process of stair climbing

Safe stair handrails

The invention discloses an emergency staircase railing A chain driving cavity is formed in each staircase railing, wherein a rotatable chain is arranged inside the chain driving cavity, the chain comprises four to six T-shaped connecting hooks, the staircase railing further comprises a T-shaped sliding block sliding groove communicated with the chain driving cavity, the two ends of the staircase railing are each provided with a clamping groove communicated with the sliding block sliding groove, each sliding block sliding groove comprises a safety sliding block which slides inside the sliding block sliding groove and is connected with the connecting hooks of the chain and a cargo sliding block, a semicircular safety supporting rod is arranged on each safety sliding block, a connector inner cavity corresponding to each sliding block sliding groove is formed inside a railing connector, and each connector inner cavity further comprises two rows of rollers through which the corresponding safety sliding block and the cargo sliding block are allowed to pass The emergency staircase railing is simple in structure, convenient to operate and capable of performing safety protection on a person climbing stairs in the stair climbing process

Emergency staircase railing

The invention discloses a safe stair railing. A chain transmission cavity is formed in each stair railing body and internally provided with a rotating chain, and each chain comprises 4-6 T-shaped connecting hooks. Each stair railing body is further internally provided with a T-shaped sliding block sliding groove communicating with the corresponding chain transmission cavity. Clamping grooves communicating with the corresponding sliding block sliding groove are formed in the two ends of each stair railing body correspondingly. A safe sliding block and a goods sliding block both connected with the connecting hooks of the corresponding chain are arranged in each sliding block sliding groove and slide in the sliding block sliding groove. Each safe sliding block is provided with a semicircular safe supporting rod. Each railing connector is internally provided with a connector inner cavity corresponding to the sliding block sliding grooves, and two rows of rollers allowing the safe sliding blocks and the goods sliding blocks to pass are further arranged in each connector inner cavity. The safe stair railing is simple in structure, convenient to operate, and capable of further protecting the safety of people climbing a stair in the stair climbing process.

Zuo Changliang

Papers

Safe stair handrails

Emergency staircase railing

Safety protection stair railing