8results about How to "Accuracy controllable" patented technology

The application discloses a kind of steel structure elevator shaft field construction device, belong to a kind of elevator construction device, including attachment frame body and lifting power device, lifting power device is installed on column body, lifting power device is connected with the lifting point power of attachment frame body by lifting rope, attachment frame body is closely contacted with the facade of column body by multiple friction wheels, pull hook power connection is also installed on attachment frame body by pull lifting power device, pull lifting power device is connected with lifting hook by pull lifting rope;Pull hook power device is used to pull the assembly unit of steel structure elevator shaft to construction position by pull lifting rope, by designing attachment frame body around the column of shaft, so that four columns have construction position on the same plane, in turn, simultaneous construction can be carried out, effectively improve the construction efficiency of elevator shaft, and the column body can be used as support and guide rail, the assembly unit of shaft is pulled to the corresponding area by pull lifting power device, in turn, construction site does not need to use additional crane.

The utility model relates to an adjustable door frame forming die. The adjustable door frame forming die comprises a lower end die, a forming die, an adjusting bolt and a forming pressure head, a square containing groove is formed in the upper face of the lower end mold, a forming inclined face is arranged on the left side of the square containing groove, a through first threaded hole is formed in the bottom of the square containing groove, a second threaded hole is formed in the lower end of a forming pressing head, and a first connector is arranged on the lower face of the lower end mold. The forming pressing head is inserted into the square containing groove, and the adjusting bolt penetrates through the first threaded hole and the second threaded hole and is in threaded connection with the first threaded hole and the second threaded hole. A second connector is arranged on the upper face of the forming die, and an L-shaped groove matched with the forming pressing head is formed in the lower face of the forming die. The die has the advantages of being simple in structure, convenient to adjust, capable of achieving one-time forming, effectively reducing machining procedures, reducing production cost, high in efficiency, suitable for batch production, high in die forming precision and easy to control, reducing labor intensity of workers and manufacturing cost and improving working efficiency.

This utility model relates to the field of oil and gas perforation equipment technology. Addressing the problem that existing ultra-high density perforating guns cannot perform selective blasting and perforation operations, and are only suitable for conventional oil pipe perforation operations, but cannot be applied to cluster perforation operations, this invention provides an ultra-high density long cluster perforating gun, comprising multiple perforating guns and a gun head assembly. Adjacent perforating guns are connected via a windowed connector assembly. The windowed connector assembly includes a windowed connector and a compressible connector pin assembly. The entire perforating gun is connected by contacting the conductive core rod on the perforating gun through the connector pin assembly. A detonation device including an electronic selective firing switch is installed at the window of the windowed connector, enabling selective blasting through the electronic selective firing switch and a wire connection. This ultra-high density long cluster perforating gun combines the characteristics of ultra-high density and selective perforation, achieving ultra-high density long-gun cluster perforation, and can be applied to cable cluster perforation operations.

The utility model discloses a vibrator suitable for the pharmaceutical industry, and relates to the technical field of vibrators, the vibrator comprises a base, a shell protection sleeve installed on one side of the base, a cylinder sleeve installed in the shell protection sleeve and a sliding core body arranged in the cylinder sleeve in a sliding mode, and an air inlet and outlet distributor is fixedly arranged between the shell protection sleeve and one end of the cylinder sleeve; a left side cavity is formed in a gap among the inlet and outlet air distributor, the air cylinder sleeve and the sliding core body; by changing an air path in the vibrator, the sliding core body can be driven to move back and forth in the air cylinder sleeve so as to generate vibration, the sliding core body does not need to be completely attached to the inner wall of the air cylinder sleeve during back-and-forth movement, only the outer circle total run-out and dimensional tolerance need to be guaranteed, the requirement for the high-precision size is single, and therefore the precision of the sliding core body is easier to control; and assembly is convenient, machining on high-precision machining equipment such as a grinding machine is easy to achieve, the machining cost is saved, and the machining efficiency is improved.

The utility model relates to an adjustable non-indentation lower die for a turning plate. The adjustable non-indentation lower die comprises a base and a forming die, the forming die comprises a connecting rod and a pressing head, a connecting head is arranged at the upper end of the connecting rod, and the pressing head is connected to the lower end of the connecting rod; the base comprises a body, a connecting part, a ball type rotating shaft and a tension spring; a placing groove is formed in the upper surface of the body, the two connecting parts are connected in the placing groove, and the two connecting parts are symmetrically arranged; an arc-shaped groove is formed in the upper end of the connecting part, the ball type rotating shaft is rotatably placed in the arc-shaped groove, a forming platform is arranged on the ball type rotating shaft, a containing cavity is formed in the portion, below the arc-shaped groove, of the connecting part, the tension spring is located in the containing cavity, and the ball type rotating shaft is arranged on the ball type rotating shaft. One end of the tension spring is connected to the bottom of the containing cavity, and the other end of the tension spring is connected to the ball type rotating shaft. The utility model has the advantages of simple structure, one-step molding, effective reduction of processing procedures and reduction of production cost.

A cold plate relates to the technical field of power battery heat dissipation, and is used for increasing the contact area of cooling liquid and ensuring the uniformity of cooling liquid flow. The cold plate comprises an upper plate body, a lower plate body and a flow channel arranged between the upper plate body and the lower plate body, the upper plate body and the lower plate body are sealingly connected, the flow channel is arranged on the plate surface of the lower plate body facing the upper plate body, and the two ends of the flow channel pass through one side of the lower plate body to form a liquid inlet and a liquid outlet; further comprising a strip-shaped groove arranged on the plate surface of the upper plate body facing the lower plate body, the strip-shaped groove is arranged in multiple, the multiple strip-shaped grooves are distributed at intervals, the strip-shaped groove is communicated with the flow channel, and the strip-shaped groove is used for increasing the contact area between the upper plate body and the cooling liquid flowing in the flow channel. According to the scheme, the cooling liquid can flow into the strip-shaped groove through the flow channel, the contact area between the upper plate body and the cooling liquid is increased, and the heat dissipation effect is improved.

The invention relates to a two-phase heat dissipation cold plate and system for heat dissipation of a high-power chip, and belongs to the technical field of heat dissipation of electronic equipment.The two-phase heat dissipation cold plate comprises a bottom plate, a cover plate, a liquid inlet and a liquid outlet, the bottom plate and the cover plate are connected in a sealed mode to form an inner cavity, and a plurality of rows of heat dissipation ribs are arranged in the inner cavity; the plurality of rows of radiating ribs are arranged at intervals in a multi-row manner in the working medium flowing direction from the liquid inlet to the liquid outlet, and a main runner is formed between every two adjacent radiating ribs; the height of at least part of the sections of each row of radiating ribs is gradually reduced in the working medium flowing direction, so that a connecting flow channel which is used for connecting two adjacent rows of main flow channels and is gradually increased in cross section area is formed; fluid mixing flow channels are reserved in the heat dissipation ribs at equal intervals, and the fluid mixing flow channels and the connecting flow channels can be used for disturbing flowing of fluid in the adjacent main flow channels. While excellent fluid expansion adaptability and enhanced heat exchange capacity are guaranteed, regularization and flattening of the cold plate structure are achieved, and the cold plate has the advantage of being low in manufacturing cost.

This application provides an installation method for a combined flexible cable structure and rigid membrane frame roof structure in the field of large-span spatial structure construction. The method includes dividing the roof into multiple fan-shaped construction zones; assembling rigid membrane frame units; pre-tensioning the flexible cable net structure; lifting and welding the rigid membrane frame units; lifting and connecting the pre-tensioned flexible cable net structure to the corresponding rigid membrane frame units; tensioning the flexible cable net structure; and fixing the flexible cable net structure. This application divides the roof into multiple construction zones and performs the assembly of rigid membrane frame units and pre-tensioning of the flexible cable net structure on the ground, which offers favorable conditions, easy precision control, and reduces uncertainties on-site. Subsequently, the rigid membrane frame units and the pre-tensioned flexible cable net structure are installed sequentially, followed by a coordinated graded tensioning process. This proactively incorporates the deformation of the rigid membrane frame units into the control system, coordinating it with the forming process of the flexible cable net structure, thus avoiding the problems of excessive passive deformation or repeated adjustments of the frame in traditional methods.