73results about How to "Reduce the deformation" patented technology

The invention discloses a method and a device for elevation synchronous compensation for a super-high structure construction. The device comprises a plurality of groups of columns used on an upper layer of a lifting conversion truss, and a jacking device which makes the columns correspondingly level with a reference level line, wherein the jacking device is arranged above the conversion truss and corresponds to the columns. The method comprises the following steps that: the columns, beams and plates of each layer are constructed layer by layer from bottom to top, and after the construction of each layer is finished, the device for the synchronous compensation is adjusted so that each column is correspondingly leveled with the reference level line and the structure each layer is achieved to be level; when the structure is constructed to an upper track conversion truss or the top of the structure is sealed, an upper layer of concrete of the conversion truss is cast to underpin the device for the synchronous compensation so as to achieve the permanent connection of the structure; and finally, the device for the synchronous compensation is dismounted. The method and the device can effectively control the deformation of a horizontal structure in a construction process so as to effectively reduce the deformation extent of the structure, and avoid oversized structural deflections which cause larger additional stresses at local panel points and endanger the quality of floor-slab layers.

The invention provides a supporting tool for machining and a method for machining a tensioning sleeve by using the supporting tool. The supporting tool comprises a base and a supporting body, an installing groove is formed in the end face of the base, the supporting body is inserted behind the installing groove, the supporting body and the installing groove are connected through screws, a threadedthrough hole is formed in the center shaft and at the position of a center axis where the base and the supporting body connect, and a groove is formed in the supporting body and corresponds to the threaded through hole. In the machining process, the supporting tool internally supports the interior of the tensioning sleeve intermediate, the tensioning sleeve intermediate is changed into a workingstate from a natural state to be further machined, the deformation direction and the deformation amount can be effectively controlled, the deformation range is reduced, so that the dimensional precision and the form and location tolerance of the tensioning sleeve can be accurately controlled; and the concentricity, the coaxiality and the circular runout precision of the tensioning sleeve under theworking state can be ensured, the production cost is effectively reduced, and the using effect of the tensioning sleeve is improved.

The invention belongs to the technological field of compressors, relating to a reciprocating oil seal structure of a straight reciprocating compressor, which comprises an oil seal main part, a seal lip, an end plate and a connecting rod, wherein the connecting rod passes through the oil seal main part and the seal lip; the seal lip is hermetically matched with the external surface of the rod body of the connecting rod; an abducent seal fin is adopted; the seal fin is fixedly and hermetically connected with the oil seal main part or is integrated with the oil seal main part; the external ring margin of the seal fin is fixedly and hermetically connected with the end plate; the elasticity of the seal fin is utilized as a compensation to ensure that the oil seal main part can trace the shake of the connecting rod in time; the transformation range of the seal lip is reduced relative to the rod body of the connecting rod, and the degree the lip of the seal lip fits the connecting rod is further increased. The invention can ensure that the oil seal keeps good sealability when the oil seal structure is in shacking condition.

The invention belongs to the technical field of electronic materials, and particularly relates to a release film for a circuit board. The release film comprises a supporting layer, an adhesive layer,an aluminum foil layer and a release heat sealing layer. The release heat sealing layer comprises vinyl functionalized acrylic resin, allyl phenyl ether, polyvinyl alcohol, poly(3, 4-ethylene dioxythiophene), alumina coated superfine barium titanium, nano silicon dioxide, nano zirconium dioxide and curing agent. The release film has stable hot melting performance within a wide temperature range, thereby having high sealability with the circuit board; adhesion strength of the release heat sealing layer to the aluminum foil layer is higher than that of the same to the circuit board, so that stripping of the release heat sealing layer from the circuit board is facilitated, the release heat sealing layer cannot be transferred onto a circuit board material when being torn off, and appearance uniformity of the circuit board is ensured.

The inspection fixture of this invention helps ensure the contact accuracy of the front end of a probe with the inspection point of an inspection object, and extends the life of the probe. The inspection fixture of the present invention comprises: an inspection side support having an abutting surface abutting against the inspection object; an electrode side support spaced apart from the inspectionside support; and a plurality of flexible probes. The flexible probes, the base ends of which are connected to the electrode, and the front ends of which protrude from the abutting surface to be in contact with the inspection object, penetrate through the electrode side support and the inspection side support. The electrode side support has a plurality of electrode side support plates arranged inthe arranged direction of the inspection side support and the electrode side support, and each of the electrode side support plates has a first through hole for the probes to penetrate. The first through hole of the electrode side support plate nearest to the inspection side support has a large diameter portion and a small diameter portion. The small diameter portion is apart from the inspectionside support than the large diameter portion, and the diameter of the small diameter portion is smaller than the diameter of the large diameter portion.

The invention discloses a fire-resistant composite floor slab and a fire-resistant performance test method thereof. The fire-resistant composite floor slab comprises a fire-resistant steel or fire-resistant weather-proof steel compression floor support plate, and concrete, wherein the fire-resistant steel or fire-resistant weather-proof steel compression floor support plate comprises shaped ribs with closed hollow parts; the concrete is poured on the floor support plate; the floor support plate is made of a base material without coating and films; after the concrete is poured, the upper surface is scraped and maintained; the concrete and the floor support plate are combined as a whole; the whole is used as the fire-resistant composite floor slab; in the initial stage of fire, the deformation of the fire-resistant composite floor slab is delayed, and the deformation amplitude is reduced; in the intermediate stage and high temperature stage, the fire-resistant composite floor slab does not collapse, and the deformation force and overall combination effect of the fire-resistant composite floor slab are maintained; after fire, the bonding performance between the concrete and the floorsupport slab is maintained, the fire-resistant composite floor slab does not fall apart, the deformation recovery degree and remaining bearing capacity of the fire-resistant composite floor slab are higher than 5%, and the fire-resistant composite floor slab still has a combination effect and integrity. The testing method comprises the following steps of: testing mechanical properties of materials, testing the shear-bonding performance and fire resistance of the fire-resistant composite floor slab, testing the residual load-bearing performance and shear-bonding performance after fire, synthesizing new shear adhesion-bonding coefficients, and summing up fire prevention safety factors.

An input device comprises a backlight module, a panel, and an optical sensing module, wherein the panel is arranged on the backlight module and comprises an electrode substrate, a flexible substrate, a first electrode, a fluid layer, and multiple phoresis particles; the flexible substrate is arranged on the electrode substrate and spaced from the electrode substrate for a certain distance; the first electrode and the fluid layer are arranged between the electrode substrate and the flexible substrate; the phoresis particles have an electric property and can be movably arranged in the fluid layer; the phoresis particles have a reflection characteristic so as to reflect light rays and external light and are used for laying on the flexible substrate under the drive of a first electric field provided by the first electrode; the optical sensing module is arranged between the backlight module and the panel; and when the first electrode provides the first electric field, the light rays are reflected by the phoresis particles onto a light sensing unit of the optical sensing module.

The invention relates to a blank of a diamond type packing box for containing liquid and the packing box. The blank is a flaky packing material. The packing material is provided with a first horizontal fold used for forming an upper top face sealing seam, a second horizontal fold used for forming an upper top face, a third horizontal fold used for forming a lower bottom face and a fourth horizontal fold used for forming a lower bottom face sealing seam. Vertical folds used for forming side face sealing seams are arranged on the left side and the right side of the packing material. Four vertical folds used for forming the rectangular upper top face are arranged between the first horizontal fold and the second horizontal fold. Four vertical folds used for forming the rectangular lower bottom face are arranged between the third horizontal fold and the fourth horizontal fold. In the rectangle formed by two sides at the same position of the upper top face and two sides at the same position of the lower bottom face, a first diagonal and a second diagonal are both folds. The deformation degree of the packing box is lowered, the holding comfort degree of the packing box is increased, and the outer shape of the packing box is enriched.

The invention provides a machining process of a low-deformation aluminum alloy welding aviation part, and belongs to the technical field of welding. The machining process of the low-deformation aluminum alloy welding aviation part comprises the following steps that S1, shape correction is carried out, specifically, burrs on the four sides of a cover and a box body are removed thoroughly through ascraper or a file, the four sides of the cover are knocked inwards through a small hammer to be slightly bent inwards to be in an arc shape, the four fillets of the cover and the four fillets of the box body are shaped to be consistent in transition, and the cover and the box body are matched free of dislocation; S2, cleaning is carried out, specifically, the portions, needing to be welded, of thecover and the box body are wiped clean with acetone; S3, clamping is carried out, specifically, the box body and the cover are placed into a tool, after the box body and the cover are placed in place, the box body is opened from inside to outside and in contact with the cover, and the welding edge of the box body is in close contact with the welding edge of the cover; S4, primary welding is carried out; S5, machine welding is carried out; S6, repair welding is carried out; and S7, part taking is carried out. The machining process has the advantages of being small in deformation during weldingand good in welding sealing performance.

The invention discloses a suspended ceiling corner machining structure and a construction technology, and relates to the technical field of suspended ceiling construction. A suspended ceiling corner machining structure comprises a wall corner mounting frame, a nine-centimeter plate and a gypsum board, the wall corner mounting frame is fixedly arranged at a building roof wall corner, the nine-centimeter plate is embedded in the wall corner mounting frame, a bonding layer is arranged between the nine-centimeter plate and the gypsum board and used for connecting the nine-centimeter plate and the gypsum board, and a putty layer is arranged on the lower side wall of the gypsum board. The construction technology of the suspended ceiling corner machining structure comprises the following steps that surveying and setting out are conducted, and line snapping is conducted on the peripheral walls according to the designed elevation of a suspended ceiling; the wall corner mounting frame is mounted according to the surveying and setting-out position, during mounting, the wall corner mounting frame is cut into an L shape and fixed through self-tapping screws, and the inner side length of the L angle is larger than or equal to 300 mm; the nine-centimeter plate is embedded in a mounting groove in the wall corner mounting frame; by adopting the construction process, the flatness of the suspended ceiling structure can be improved, the problems of cracking and damage of the suspended ceiling are reduced, and the service life of the suspended ceiling structure is prolonged.