9results about How to "Avoid excessive local stress" patented technology

The utility model discloses a kind of heating and ventilation pipeline connecting devices, relate to pipeline connecting technical field. Including two opposite flange's heating and ventilation pipeline, further include: tight sleeve ring, tight sleeve ring is corresponding two groups between two heating and ventilation pipelines and is sleeved on heating and ventilation pipeline;And first push sleeve structure and second push sleeve structure, first push sleeve structure and second push sleeve structure are respectively sleeved on two heating and ventilation pipelines, second push sleeve structure one end can be inserted into first push sleeve structure and carry out screw connection, first push sleeve structure and second push sleeve structure between screw cooperation to simultaneously push two groups of tight sleeve ring and press in the flange of respective corresponding side heating and ventilation pipeline, so that the flange of two heating and ventilation pipelines is butted and is pressed tightly.

The utility model discloses a water conservancy construction intercepting device, and relates to the technical field of water conservancy intercepting, the water conservancy construction intercepting device comprises a limiting support and a supporting assembly, the supporting assembly provides auxiliary support for an intercepting plate and optimizes stress distribution, stress is decomposed and transmitted through the auxiliary support, so that the force borne by each supporting part is relatively small, and the supporting assembly is arranged on the limiting support. The situation that local stress is too large is avoided, the stability of the intercepting plate is enhanced, the intercepting effect is guaranteed, the supporting assembly can form a folding structure through a plurality of shafts, transferring is convenient, and space is saved; after a limiting support is fixed, multiple sets of connecting plates are inserted into clamping grooves, a rotary supporting frame is parallel to the ground, and a supporting sleeve rod and an auxiliary supporting rod are rotated; a second screw rod penetrates through the connecting plate and is in threaded connection with the intercepting plate to provide top support; an auxiliary support rod is attached to the connecting plate; a third screw rod penetrates through the connecting plate and is in threaded connection with the intercepting plate to provide middle support; and a fourth screw rod penetrates through the fixing frame and is connected with the ground to provide bottom support.

The utility model discloses a traction device, which belongs to the technical field of hose extrusion processing equipment and comprises a guide mechanism, a support rod and a conveying mechanism, one end of the support rod is connected with the guide mechanism, the support rod penetrates through the conveying mechanism, and the other end of the support rod is connected with an extrusion die. By installing the supporting rods, a traction path is provided for the braid layer, and local accumulation of the braid layer is prevented. Besides, the guide mechanism is arranged on the upstream of the conveying mechanism, and the braid layer is expanded by the aid of the rotating part, so that the problem of large internal stress of the braid layer is solved. The first rotating part and the second rotating part cooperate with the first rotating part and the second rotating part to convey the woven layer, so that the tension of the woven layer is dispersed, the situation that local stress is too large is reduced, a part of force which is borne by the woven layer in an extrusion die and causes rotation is offset, and the stability of the working state of the woven layer and the product uniformity are improved.

The utility model discloses a kind of elastic braided protective sleeve and telescopic water pipe group cover with double-locking joint, it is related to fluid conveying device field, comprising: joint, the number of joint is two, the joint includes quick -wired base, quick -wired base side is provided with inner core, the inner core outside is equipped with connecting sleeve, the connecting sleeve outside is equipped with sheath, the sheath is connected with quick -wired base screw thread;Inner tube, the two ends of inner tube are respectively connected with two joints, and inner tube is made of elastic material, and the inner tube is close to the one end of joint and is provided with No. 1 aluminum buckle;The utility model is fixedly connected by No. 1 aluminum buckle and No. 2 aluminum buckle respectively with the inner tube and outer tube and joint, forms a double insurance, No. 1 aluminum buckle firmly fixes inner tube in the inner core outside of joint, ensure that the connection of inner tube and joint is tight, not easy to loosen, and No. 2 aluminum buckle is fixed in the connecting sleeve outside with outer tube, further enhance the connection stability of outer tube and joint.

This utility model discloses a clamping device for screen production. It relates to the field of screen production technology and includes: a clamp, with a linkage device slidably connected to the inner wall of the clamp and an anti-slip device fixedly connected to the outer wall of the clamp. The linkage device includes a limiting rod, and a control handle is symmetrically threaded to the outer wall of the limiting rod via a threaded line. By setting the linkage device and the limiting rod, multiple clamps are symmetrically slidably connected and linearly arrayed along their outer walls, enabling multiple clamps to simultaneously clamp the screen. This multi-point coordinated action can evenly distribute the clamping force to multiple edge positions of the screen, avoiding the problem of excessive local force that occurs when using traditional single-point or few-point clamping. It is especially suitable for large-size screen production, effectively reducing the risk of screen breakage and deformation due to uneven force. The slider achieves the purpose of fixing the clamp through its sliding connection with the limiting rod.

The utility model belongs to the technical field of logistics tractors, and particularly discloses a buffering type traction connection rubber pad of a logistics tractor. The buffering gasket comprises a gasket body arranged on one side of the tractor, a traction seat is arranged on one side of the gasket body, a buffering assembly is arranged in the gasket body and comprises a buffering cushion, and a buffering cavity is formed in the buffering cushion and used for conducting traction buffering on the traction seat. Impact force can be uniformly dispersed, impact strength can be relieved, damage risks of connecting parts can be reduced through the honeycomb-shaped buffering cavities of the buffering assemblies, the contact area of rubber and air is increased through the corrugated inner wall protruding blocks in the cavities, energy is absorbed through the air damping effect, the buffering effect is enhanced, connection is more stable, meanwhile, abrasion of the connecting parts can be reduced, and the service life of the connecting parts is prolonged. The service life of the device and the rubber pad is prolonged, the maintenance cost is reduced, safe and reliable transportation is guaranteed, the part loosening risk is reduced, efficient and stable connection guarantee is provided for logistics transportation, and the transportation efficiency and quality are improved.

The utility model provides a dephosphorization electric fossil packing structure which comprises a copper net material bag, an upper branch pipe and a lower branch pipe are inserted into the two ends of the copper net material bag respectively, and a first semicircular ring and a second semicircular ring are arranged at the two ends of the copper net material bag in a sleeved mode. The two ends of the first semicircular rings are connected with the two ends of the second semicircular ring through fasteners formed by screws and second nuts respectively, an inner threaded pipe is arranged between the two first semicircular rings, two screw rods are connected into the inner threaded pipe in a threaded mode, and the ends, located on the outer side of the inner threaded pipe, of the screw rods are sleeved with lug plates. The lug plate is fixedly connected with the first semicircular ring, the two sides, in the length direction of the threaded rod, of the lug plate are each provided with a first nut in threaded connection with the threaded rod, and the end, away from the copper mesh material bag, of the lower branch pipe is provided with a bottom cover through a plurality of sets of bolts. And the fracture risk caused by shaking is greatly reduced, and the service life of the copper mesh material bag is prolonged.

The utility model relates to the technical field of filter screen positioning, in particular to a modularized quick-release type FFU filter screen positioning mechanism which comprises a modularized main body frame and an inner frame, the modularized main body frame is of a hollow structure with a hollow-square-shaped cross section formed by extruding aluminum alloy sections, a filter screen is installed above the modularized main body frame, and the inner frame is arranged above the modularized main body frame. Interface grooves are formed in four sides of the inner frame, quick-release unit mounting seats are arranged on four sides of the inner frame, and quick-release locking mechanisms are mounted at four corners of the inner frame. The three-point contact elastic locking mechanism is adopted, compared with a traditional single-point locking mode, FEA analysis and verification show that stress concentration is reduced by 62%, and the problem that local stress is too large is effectively avoided; and due to the innovative design of the modular interface slot, only the damaged unit needs to be replaced when a part is damaged, so that the maintenance cost is greatly reduced by 70%, and the practicability and the economical efficiency of the mechanism are greatly improved.

The invention relates to an irradiation treatment system for local modification of a semiconductor, and belongs to the technical field of semiconductor processing. The irradiation treatment system for local modification of the semiconductor comprises a bearing table, a shielding mechanism, a positioning detection assembly and a control module, wherein the bearing table is used for bearing and fixing a semiconductor wafer; the shielding mechanism comprises a shielding plate and a driving assembly, and a radiation opening is formed in the shielding plate; the surface, facing the radioactive source, of the wafer is a processing surface; the edge position of the shielding plate is fixed, and the driving assembly is connected with the center point of the shielding plate and drives the center point to ascend and descend in the axial direction, so that the shielding plate generates elastic deformation to form an arc-shaped surface; the positioning detection assembly is used for detecting contact between the shielding plate and the machining face. The control module controls the center point of the shielding plate to ascend and descend according to the contact signal, so that the arc-shaped face shape of the shielding plate is matched with the arc-shaped shape of the machining face. According to the irradiation treatment system for semiconductor local modification, the reliability and the yield of a semiconductor local modification process can be improved.