124results about How to "Guaranteed limit" patented technology

The present invention relates to the technical field of photovoltaic tools, and discloses a photovoltaic module frame having a protection function. The photovoltaic module frame comprises a pedestal,the two sides of the top portion of the pedestal are fixedly connected with limiting seats, the top portions of the two limiting seats are fixedly connected with limiting columns, the outer surfaces of the two limiting columns are sleeved with limiting springs, the top portions of the two limiting springs are respectively fixedly connected with the two sides of the bottom portion of a rotary table, the middle portion of the bottom portion of the rotary table is fixedly connected with a location seat, the two sides of the bottom portion of the location seat are fixedly connected with hinge racks, one ends of the bottom portions of the two hinge racks are fixedly connected with the two sides of the middle portion of the top portion of the pedestal through hinge seats, the middle portions ofthe bottom portion of the location seat is fixedly connected with a first buffer rack, the bottom portion of the first buffer rack is fixedly connected with a pneumatic seat, and the bottom portion ofthe pneumatic seat is fixedly connected with a second buffer rack. The photovoltaic module frame having the protection function can have limiting and fixing effects on the photovoltaic panel throughprotection frames and location plates so as to ensure stability of the photovoltaic panel in the use process.

The invention discloses a bill classification management device based on company class identification, and relates to the field of bill management. The bill classification management device based on company class identification comprises a drawer body; a plurality of groups of bill clamping plates are slidably connected into the drawer body; first sliding grooves are formed in the two sides of thedrawer body; and a lifting mechanism and a control mechanism are arranged in the drawer body. According to the bill classification management device based on company class identification, when a useruses the device, classification labels of bills can be pasted on a button main body corresponding to each bill clamping plate. When a bill on a certain bill clamping plate needs to be taken out, thebill clamping plates can be bounced up by directly pressing the button bodies of the corresponding labels, so that classification and management of bills are facilitated; after the bills are processed, the bill clamping plates can be returned by pressing the bill clamping plates downwards, managers can quickly locate and take out the bills of the corresponding types, and the various bills can be arranged in order.

The invention relates to the field of sports skateboards, and in particular to a multifunctional combined sports skateboard, which comprises a middle section of skateboard, two sliding wheel groups which are symmetrically arranged at the bottom of the middle section of skateboard and two spliced skateboards which are arranged at the left and right ends of the middle section of skateboard and are detachably connected to the middle section of skateboard, wherein a detachable shoe cover is arranged at the top of the middle section of skateboard; the middle section of skateboard is of a rectangular structure, and a rectangular through slot is each formed in the parts, close to the front and back sides, of the middle section of skateboard; the two sliding wheel groups are arranged in the corresponding rectangular through slots; the two sliding wheel groups are same in structure and both the two sliding wheel groups comprise a plurality of mounting blocks; one end of each of the mounting blocks is hinged in the rectangular through slots in the corresponding positions, and a first roller is hinged at the other end of each of the mounting blocks; and a detachable guide piece is each arranged at the bottoms of two ends, which are mutually kept away from each other, of two spliced skateboards. The sports skateboard provided by the invention, through flexible detaching and mounting, can adapt to various training function varieties, so that the quantity of apparatuses can be reduced, and subsequently, a school can be facilitated in operations.

The invention discloses an elevator system capable of preventing accidental movement. A flange rotating disc is rotationally arranged in the middle of a cross beam of an elevator car, a connecting rod is rotationally and symmetrically arranged at the outer edge part of the flange rotating disc, a bolt is articulated at the other end of the connecting rod and is assembled on the cross beam in a sliding manner, a bolt hole base on a guide rail is fixedly assembled at a level position of the elevator car, a bolt hole is formed on the bolt hole base for allowing a conical surface section of the bolt to protrude thereto, the bolt stretches into the bolt hole at one movement limit position and comes off from the bolt hole at the other limit position, a detector switch is assembled on the cross beam, a groove is formed on the bolt for allowing the contactor of the detector switch to stretch thereto freely when the bolt comes off the bolt hole, when the bolt moves outwards to stretch into the bolt hole, the contactor of the detector switch comes off from the groove and is pressed down by the bolt, the detector switch is in transmission connection with a control main board of the elevator, and the control main board of the elevator is in control connection with a motor. According to the elevator system, the limitation between the elevator car and the guide rail can be ensured by a mechanical structure, so that no accidental movement occurs to the elevator car.

The invention discloses a telescopic rotary mechanism of an automobile sound panel. Structurally, the telescopic rotary mechanism comprises a telescopic rotary base, a sound panel, a panel protectivecover, a panel protective groove, and a locking screw, wherein the panel protective cover is a cuboid, the panel protective groove integrally penetrates through from front to rear in the middle, the panel protective groove is a trapezoid groove, the upper bottom surface faces the rear side, the panel protective cover is locked with the sound panel, and four front corners of the sound panel are locked with the telescopic rotary base through locking screws. When the mechanism is used, the mechanism is rotated in a positioned place through springs, troughs and clamps of the mechanism, and the panel ejects when being used in a telescopic and rotary manner, so that the panel can be controlled stably when being expanded and rotated, and the sound panel is prevented from moving due to misopertionand is convenient to take out, and is convenient to use.