39results about How to "Prevent being crushed" patented technology

The invention provides a material clamp. The material clamp comprises a mounting seat (10), a first clamping portion (20), a second clamping portion (30), a driving mechanism (40), a movable clamping part (50) and a detection mechanism (60). The first clamping portion (20) is pivoted on the mounting seat (10) and comprises a first clamping end (21) and a driving end (22); the second clamping portion (30) comprises a second clamping end (31), and the driving mechanism (40) is arranged on the mounting seat (10) and drives the first clamping end (21) to be close to or far away from the second clamping part (31); a limiting part (23) for limiting the rotation position of the movable clamping part (50) is arranged on the first clamping portion (20), and clamping space is formed between the movable clamping part (50) and the second clamping end (31); and the detection mechanism (60) detects the clamping position of the movable clamping part (50) and determines whether a material is clamped by the material clamp or not according to a detection result. According to the material clamp, material clamping and taking out can be effectively determined, and the mold production safety is improved.

The embodiment of the invention discloses an ADN based single-component thruster adopting low-temperature plasma concerted catalysis. The ADN based single-component thruster comprises a spouting section, an ionization section, a catalysis section and a combustion chamber which are coaxially connected sequentially, wherein the two ends of the spouting section and the two ends of the ionization section are pressed by a front flange plate and a middle flange plate; an integrated structure formed by the catalysis section and the combustion chamber and the ionization section are pressed by the middle flange plate and a rear flange plate; the spouting section comprises the front flange plate, a front insulator and an anode chassis as well as gas and liquid supply tubes separately used for providing an ADN liquid propellant and gas; the ionization section comprises a cylindrical anode, a middle insulator, a barrel-shaped cathode, a rear insulator and the middle flange plate which are sequentially connected to the anode chassis; the middle flange plate and the front flange plate are matched and pressed through a locking bolt; the catalysis section comprises a rear flange plate and a catalysis bed; and the combustion chamber comprises an optical test window and a reserved sensor jointing base. The AND based single-component thruster has various ignition ways, and is of great significance in completely converting an existing catalysis dissociation ignition way.

The invention provides a check ring combination for a road manhole and a steel support ring for installing the check ring combination, wherein the check ring combination for the road manhole comprises an upper check ring and a lower check ring, the upper check ring comprises an upper check ring body and an extension edge, the upper check ring body is in a cylinder structure, and the extension edge is connected with the lower end of the upper check ring body; the lower check ring comprises a first section of lower check ring in a cylinder structure, a second section of lower check ring in a cylinder structure and a third section of lower check ring in a cylinder structure, which are arranged vertically and sequentially, the second section of lower check ring is in a frustum-shaped cylinder structure, the lower end of the first section of lower check ring is connected with the big end of the second section of lower check ring, and the upper end of the third section of lower check ring is connected with the small end of the second section of lower check ring; and the extension edge is overlapped with the upper end of the first section of lower check ring. The influence of road settlement on the manhole can be avoided through the check ring combination for the road manhole and the steel support ring for installing the check ring combination.

The invention discloses an electrical connector. The electrical connector is electrically connected with a chip module, and comprises a body, a plurality of insulating parts and a plurality of terminals, wherein the body is provided with a plurality of accommodating holes passing through the body from top to bottom; inner side faces of the accommodating holes and an upper surface of the body are conductive; the plurality of insulating parts are molded separately from the body, and correspondingly fixed in the accommodating holes respectively; the insulating parts are provided with supporting parts which extend upwards out of the accommodating holes, are higher than the upper surface of the body, and are used for supporting the chip module; the plurality of terminals are correspondingly fixed on the insulating parts respectively; and the terminals are provided with contact parts which are pressed against the chip module. The supporting parts are higher than the upper surface of the body, so that short circuit caused by contact of the chip module with the upper surface of the body can be avoided. The supporting parts extend out of the accommodating holes, so that the arrangement space of the supporting parts can be increased; the strength of the supporting parts is enhanced; the supporting effect for the chip module is improved; the chip module is prevented from being damaged under pressure; and the terminals are prevented from being deformed excessively under pressure.

The invention provides a material clamp. The material clamp comprises a mounting seat (10), a first clamping portion (20), a second clamping portion (30), a driving mechanism (40), a movable clamping part (50) and a detection mechanism (60). The first clamping portion (20) is pivoted on the mounting seat (10) and comprises a first clamping end (21) and a driving end (22); the second clamping portion (30) comprises a second clamping end (31), and the driving mechanism (40) is arranged on the mounting seat (10) and drives the first clamping end (21) to be close to or far away from the second clamping part (31); a limiting part (23) for limiting the rotation position of the movable clamping part (50) is arranged on the first clamping portion (20), and clamping space is formed between the movable clamping part (50) and the second clamping end (31); and the detection mechanism (60) detects the clamping position of the movable clamping part (50) and determines whether a material is clamped by the material clamp or not according to a detection result. According to the material clamp, material clamping and taking out can be effectively determined, and the mold production safety is improved.

The invention discloses a water cooling structure magnetic plasma thruster. An expanded anode, a hollow cathode and internal conical surface insulating ceramic form a discharge chamber. An insulator is designed to be connected with the cathode and the anode, and insulating connection is achieved. A flexible graphite gasket is installed in the key matching position, and a sealing purpose is achieved. An installation insulating piece is designed to achieve radial matching connection of the thruster and a magnetic coil, the coaxality is ensued, and the precision of the bit-type of an additional magnetic field is improved. The thruster is fastened through a locking column structure, and thus the thruster can be adjusted at random relative to the axial position of the magnetic coil. The cathode and the anode both adopt cavity water cooling structures. Argon servers as a propellant, the cathode and the anode supply air at the same time, discharging is conducted in the discharge chamber through high-voltage breakdown between the cathode and the anode, and plasmas are continuously ionized and are ejected from the anode under the action of the additional electromagnetic field to produce thrust. The water cooling structure magnetic plasma thruster can stably work in the power range of 10-20 kW, provides the bull level thrust, and has an important significance to the structural design and experimental researches of magnetic plasma thrusters.