33results about How to "Easy to trip" patented technology

The invention discloses a well lid for emergency drainage. The well lid comprises a well lid supporting base, a lid plate and a plurality of windows, wherein the lid plate is matched with the well lid supporting base for forming a well lid; the windows are formed on the well lid supporting base; the lid plate comprises rotating plates which are the same as the windows in shape and quantity; the rotating plates are rotatably connected with the windows through connection shafts; the well lid further comprises a rotation piece and a transmission piece; the rotation piece is connected with the well lid supporting base and can rotate forwards and backwards; and the transmission piece is arranged between the rotation piece and the rotating plates, and is used for converting the rotation of the rotation piece into a force to drive the rotating plates to rotate forwards and backwards around the connection shaft, so as to open and close the windows. According to the well lid provided by the invention, the rotating plates rotate forwards and are entirely opened under the effect of the rotation piece and the transmission piece, drainage is fast performed, and emergency drainage is realized. In the drainage process, as long as the rotation piece is not rotated, the windows keep an opened state all along, so as to avoid blocking of drainage openings. After the drainage is finished, the rotation piece is reversely rotated so that the rotation piece is reversely closed under the driving of the transmission piece.

The invention discloses an electronic device shell which comprises a first shell, a second shell, an elastic part and a slider. A first hook is arranged on the inner side of the first shell, the inner side of the first shell is matched with the second shell, a jack is arranged on the second shell, the slider is mounted on the second shell and can move along the direction of the jack, a first slider opening is arranged on the slider and matched with the first hook, the elastic part contacts with the slider and applies elastic force facing the jack to the slider, the first hook can extend into the first slider opening and is fastened with the slider, the slider applies first tension facing the slider to the first hook, and the second shell applies second tension to the slider, wherein the direction of the second tension is as same as that of the first tension. The first shell of the electronic device shell can be conveniently fastened on the second shell, and the first shell and the second shell can be conveniently unfastened.

The invention discloses an electronic equipment outer shell which comprises a first outer shell and a second outer shell. The electronic equipment outer shell further comprises an elastic piece and a sliding piece. A first hook-shaped portion is arranged on the inner side face of the first outer shell, the inner side face of the first outer shell is matched with the second outer shell, an inserting hole is formed in the second outer shell, the sliding piece is capable of moving along the inserting hole direction, a sliding piece opening is formed in the sliding piece, and the sliding piece opening is matched with the first hook-shaped portion. The elastic piece is contacted with the sliding piece and applies elastic force towards the inserting hole to the sliding piece. When the first hook-shaped portion stretches into the opening of the sliding piece, the sliding piece applies first tensile force to the first hook-shaped portion towards the sliding piece, and the second outer shell applies second tensile force to the sliding piece with the identical direction with the first tensile force. The first outer shell of the electronic equipment outer shell can be fastened on the second outer shell conveniently, and the first outer shell and the second outer shell are convenient to separate.

The invention discloses an engineering driller comprising a power head, a driving drill rod, two feeding oil cylinders, a portal frame and a chuck for vertically fixing the driving drill rod opposite to a stand, wherein the driving drill rod vertically passes through a main shaft of the power head, the portal frame comprises a left vertical post and a right vertical post, and both sides of the power head are respectively clamped on the left vertical post and the right vertical post and are in single-freedom sliding fit with vertical posts at the corresponding side; and the two feeding oil cylinders are respectively fixed and arranged at the bottoms of the left vertical post and the right vertical post, piston rods of the feeding oil cylinders are vertically and upwards fixed with the power head below which the chuck is arranged, and the driving drill rod is clamped in the chuck. A power head support frame of the engineering driller adopts a portal vertical post structure, both sides of the power head are respectively clamped on the left vertical post and the right vertical post of the portal frame, the power head moves up and down through the feeding oil cylinders, the stroke can be about 1 meter, and therefore, the engineering driller has high precision of vertical movement; because the chuck is arranged below the power head, an operator can directly operate the engineering driller without climbing the driller; and the engineering driller has the advantages of safety, convenience and high efficiency.

The invention discloses a well lid for emergency drainage. The well lid comprises a well lid supporting base, a lid plate and a plurality of windows, wherein the lid plate is matched with the well lid supporting base for forming a well lid; the windows are formed on the well lid supporting base; the lid plate comprises rotating plates which are the same as the windows in shape and quantity; the rotating plates are rotatably connected with the windows through connection shafts; the well lid further comprises a rotation piece and a transmission piece; the rotation piece is connected with the well lid supporting base and can rotate forwards and backwards; and the transmission piece is arranged between the rotation piece and the rotating plates, and is used for converting the rotation of the rotation piece into a force to drive the rotating plates to rotate forwards and backwards around the connection shaft, so as to open and close the windows. According to the well lid provided by the invention, the rotating plates rotate forwards and are entirely opened under the effect of the rotation piece and the transmission piece, drainage is fast performed, and emergency drainage is realized. In the drainage process, as long as the rotation piece is not rotated, the windows keep an opened state all along, so as to avoid blocking of drainage openings. After the drainage is finished, the rotation piece is reversely rotated so that the rotation piece is reversely closed under the driving of the transmission piece.

The invention discloses an electronic device shell which comprises a first shell, a second shell, an elastic part and a slider. A first hook is arranged on the inner side of the first shell, the inner side of the first shell is matched with the second shell, a jack is arranged on the second shell, the slider is mounted on the second shell and can move along the direction of the jack, a first slider opening is arranged on the slider and matched with the first hook, the elastic part contacts with the slider and applies elastic force facing the jack to the slider, the first hook can extend into the first slider opening and is fastened with the slider, the slider applies first tension facing the slider to the first hook, and the second shell applies second tension to the slider, wherein the direction of the second tension is as same as that of the first tension. The first shell of the electronic device shell can be conveniently fastened on the second shell, and the first shell and the second shell can be conveniently unfastened.

A thermal tripping mechanism of a surge protection device comprises an elastic mechanism. Two first protection components (103) and one second protection component (108) form a Y-shaped layout and the two first protection components (103) are directly or indirectly connected to the second protection component (108) by using a thermal fusing material. The elastic mechanism comprises an elastic part (105) and a slide part (106). The elastic part (105) drives the slide part (106) to move by an elastic force. When the two first protection components (103) are both in a normal working state, the thermal fusing material does not reach a fusing temperature, the two first protection components (103) and the second protection component (108) form a conductive path, and the elastic part (105) is in an energy storage state. When at least one of the first protection components (103) is in an abnormal working state, the thermal fusing material reaches the fusing temperature and is fused, the elastic part (105) releases energy for driving the slide part (106) to move, and the slide part (106) moves to cut off the conductive path.

A surge protective device disclosed by the present invention comprises a pedestal, a piezoresistor, a release support, a spring leaf, a pin 1 and a pin 2. The piezoresistor is equipped with an electrode 1 and an electrode 2, the pin 1 and the pin 2 are installed at the two sides of the pedestal, and the release support is in hinge joint with the pedestal. The electrode 2 protrudes, after the piezoresistor is installed on a shell, the electrode 1 and the pin 1 are connected, and the electrode 2 penetrates the shell. One end of the spring leaf is welded together with the electrode 2 via a fusible metal, and the other end is connected with the pin 2. The release support abuts against the spring leaf under the acting force of a spring. The surge protective device can release rapidly, effectively avoids the arc, wire drawing and combustion phenomena, and enables the safety to be improved.