42results about How to "Avoid vulnerable situations" patented technology

The invention discloses a street lamp cleaning device. The device comprises a cleaning box, and a connecting box is fixedly arranged on the upper end face of the cleaning box; a belt cavity is formedin the connecting box, a rotating mechanism is arranged in the belt cavity, and the rotating mechanism comprises a transmission shaft rotationally arranged on the inner wall of the upper side of the belt cavity; a moving groove is formed in the cleaning box, a lifting mechanism is arranged in the moving groove, and the lifting mechanism comprises a pushing frame capable of moving left and right inthe moving groove; and a transmission cavity is formed in the cleaning box, a transmission mechanism is arranged in the transmission cavity, and the transmission mechanism comprises a torsional spring groove formed in the inner wall of the upper side of the transmission cavity. According to the device, a street lamp can be automatically cleaned through wind energy and can be cleaned when sunlightexists, and the use of the street lamp at ordinary times cannot be affected; and the manpower loss is reduced, the situation that a worker is prone to being injured when perform cleaning at a high position is avoided, and the lighting effect of the street lamp is enhanced.

The invention discloses a free-range cattle multifunctional restraining device, and relates to the technical field of agricultural and pastoral machinery manufacturing. The technical scheme of the invention has the key points that the free-range cattle multifunctional restraining device comprises a bottom plate and a top plate, and two feeding lifting devices are arranged at one end of the top of the bottom plate at intervals; a restraining rod is transversely arranged between the two feeding lifting devices, and the restraining rod is perpendicular to the conveying direction of a conveying chain; first restraining ropes are arranged at the two ends of the restraining rod, a connecting rod is arranged in the middle of the restraining rod, the connecting rod is of a like L shape, and a food groove is fixedly connected to the end, away from the restraining rod, of the connecting rod; a cow head fixing plate is arranged at the end part of the top plate, and a first arc-shaped groove is formed in the bottom end of the cow head fixing plate; and telescopic baffle device are arranged at the two ends of the top of the bottom plate, and each telescopic baffle device comprises a first protection baffle, a second protection baffle, a third protection baffle and a sliding device. According to the restraining device, the head of a cattle can be restrained when the cattle eat food so as to achieve the labor-saving effect; and meanwhile, the lengths of the baffle devices can be adjusted according to different body types of cows so as to implement improvement of the restraining effect.

The invention relates to display device. It includes processor, storage, interface, and key-press set which can be discretely connected with the interface, and signal generator. When the display device is connected with the power supply, the processor transmits the first signal to the interface, signal generator generates the second signal, and the processor judges whether the second signal is right or not by the data stored in the storage to determine whether the display device is normal active or not. The method used separable key-pres set to activate display device includes the following steps: connecting the display device to power supply; display device transmits the first signal to the interface; judging whether the second signal is right or not; if it is, activating the display device.

The invention discloses a light emitting diode (LED) lamp with front and rear cavity structures, and belongs to the technical field of lighting devices. The LED lamp comprises a lamp cap shell, a bottom cover and a rear cover, wherein the front part of the lamp cap shell and the upper part of the bottom cover form a front cavity; the rear part of the lamp cap shell and the rear cover form a rear cavity; an LED aluminum substrate and a plurality of LED lamp beads are arranged in the front cavity; a power supply is arranged in the rear cavity; the back surface of the LED aluminum substrate is directly attached to the inner surface of a shell main body; a cooling fin is arranged outside the front part of the lamp cap shell; the LED lamp beads are longitudinally arranged to form a plurality of straight bodies and are aligned with straight cooling ribs of the cooling fin; a water-proof structure which consists of a seal ring, a pressing strip and a pressing strip screw is also arranged in the front cavity; and adjusting steps capable of adjusting elevation angle alpha of an LED street lamp are also arranged in the rear cavity. The LED lamp has the advantages of good cooling effect and high water-proof capacity, connection angle of the LED lamp and a connecting rod is convenient to adjust, the LED lamp is convenient to use and is not required to be frequently maintained, and a powerincoming line is stably connected.

The invention discloses a control method and system for automatically rotating a camera of an intelligent device. The control system includes a camera module, a drive mechanism, a pressure detection module and a control module; the drive mechanism is connected to the camera module; the pressure detection module and the control module The modules are electrically connected; the pressure detection module is set on the camera module to obtain the pressure value acting on the pressure detection module; the control module is used to obtain the pressure value and judge whether the pressure value is greater than the first set threshold, if greater, Then control the driving mechanism to drive the camera module to start rotating. The present invention sets a pressure detection module on a rotatable camera module, and when the pressure on the pressure detection module exceeds a set threshold, the control drive mechanism drives the camera module to start rotating, thereby achieving the purpose of automatically rotating the camera module , which avoids the situation that the camera module is easily damaged, enhances the user experience; and can meet the pursuit of high screen-to-body ratio.

The invention provides a blind rivet. The blind river comprises a core rod, a rivet sleeve, a screw nut and an U-shaped spring, wherein the tail part of the core rod is provided with a thread section, and the screw nut is sheathed on the tail part of the thread section; the end surface of the tail part of the core rod is inwards provided with a cavity along the axial direction, clamping holes are symmetrically formed in the inner wall of the cavity and are communicated with outside, the U-shaped spring is fixedly arranged in the cavity in a compressing way, the two end parts of the U-shaped spring are outwards provided with clamping pins, and the clamping pins are respectively clamped into the clamping holes of the core rod; the inner wall of the screw nut is symmetrically provided with a concave groove or a through groove around the axis; the end surface of the head part of the screw nut is provided with a first sawtooth section around the axis; the rivet sleeve is sheathed on the core rod, the end surface of the tail part of the rivet sleeve is provided with a second sawtooth section around the axis, and the second sawtooth section is engaged with the first sawtooth section; the part, near the end surface of the tail part, of the rivet sleeve is provided with a local annealing section. The blind rivet has the advantage that the installation reliability without loosening is realized.

The invention discloses a block chain application management and control method and system. The system includes a block chain application management and control system, including an organization core cloud, an edge cloud, and at least one mobile device; All mobile devices of the blockchain members record the permission information of the application in the core cloud of the organization, that is, different users use different mobile devices to access the permission information of the application in the core cloud of the organization in different geographical locations, and use the computing resources of the edge cloud to be closer The characteristics of mobile devices reduce the workload of mobile devices in the blockchain network to build blockchains; the application control method of distributed authentication not only prevents permission information from being maliciously tampered with, but also avoids the situation where traditional centralized management authentication information is vulnerable to attacks. It also reduces the cost of application management. The invention can be widely applied in the technical field of communication.