35results about How to "Increase or decrease in pressure" patented technology

The invention relates to an electric screw driver with an adjustable output torque. The electric screw driver is characterized in that an adjusting ring is arranged on the front end of a shell; a threaded ring is arranged in the adjusting ring; the front end surface of an annular gear is a rugged torque adjusting surface; a rolling ball which leans against the torque adjusting surface is arranged in the shell; the rolling ball leans against a stop pin; a stop plate is arranged on the front end of the stop pin; a spiral supporting spring is arranged between the stop plate and the threaded ring. According to the electric screw driver disclosed by the invention, the threaded ring is enabled to move by rotating the adjusting ring, and the spiral supporting spring is enabled to be compressed or stretch, so that the purpose of mechanically adjusting a screw driver head among different output twisting forces can be achieved.

The invention discloses a model exhibition platform for technology promotion, and belongs to the technical field of display technology. The model exhibition platform for technology promotion includesa lower platform body, the side face of the lower platform body is a hemispherical hook face, the bottom of the lower platform body is horizontal, the top of the lower platform body is provided with atransparent cover body, the top of the lower platform body is provided with a cavity, the inner bottom wall of the lower platform body is provided with an adsorption structure, a support plate is arranged in the cavity, the bottom of the support plate is provided with a supporting rotation structure, the inner bottom wall of the cavity is fixedly provided with a drive structure, four uniformly distributed strip-type limit holes are formed in the support plate, and the portion, located at the end away from the strip-type limit holes, on the support plate is provided with a spring accommodationgroove. The platform can fix a model, the model can be effectively prevented from toppling and breaking, the model cannot be damaged due to toppling at the time of displaying, and the display effectof the model is effectively ensured.

The invention discloses a flexible robot hand and its control method, aiming to provide a flexible robot hand and its control method with a simple structure, which can change the structure to adapt to various environments. When the pressure of the elastic cavity in the hand-shaped body changes, the driving component and the control component will bend or gradually straighten from the bending, and because the elastic cavity can be deformed, when the actuator body collides with the contact object, The executive body can deform itself to adapt to the contact object, and a driving component is set to control the pressure in the elastic cavity to realize the increase or decrease of the pressure in the elastic cavity, and the control component can accurately detect and control it.

The invention discloses a roller printing machine, belonging to the technical field of printing and dyeing. The roller printing machine comprises a printing machine base, a lead screw, a feed rod, a driving nut, a lower crossbeam, a lower printing roller, an upper crossbeam, an upper printing roller, a motor and a feed rod fine adjustment mechanism, wherein the rapid adjustment and accurate adjustment of the distance between the lower printing roller and the upper printing roller can be realized by the feed rod fine adjustment mechanism through the screw-thread fit between the lead screw and the driving nut; a driven roller is arranged on the lower crossbeam of the roller printing machine of the embodiment; a pressure sensor and a piezoelectric signal converter are arranged on the upper crossbeam; and the distance between a driving roller and the driver roller can be automatically adjusted according to the thickness of raw materials to be processed and the requirements of printing and dyeing pressure, thereby realizing the self-adaptive adjustment of pressure in the printing and dyeing process, improving the poor printing and dyeing layering of the roller printing machine and avoiding the phenomenon of defective goods such as uneven printing colors.

The invention relates to a heavy-duty isothermal forging hydraulic press, which comprises an upper transverse beam, a lower transverse beam, upright posts, a main cylinder, side cylinders and a slide block, wherein an upper baseplate is fixed on the lower plane of the slide block; and a movable workbench is arranged on the lower transverse beam. The heavy-duty isothermal forging hydraulic press is characterized in that the upper transverse beam and the lower transverse beam form a combined beam body structure; leveling cylinders are fixed on the four corners of the upper end of the upper transverse beam and the upper end of the lower transverse beam; each leveling cylinder is provided with an independent leveling control system; an upper knock-out device is arranged on the slide block; movable workbench positioning mechanisms are arranged on the lower part of the movable workbench body and in the lower transverse beam; and the movable workbench body is further provided with a movable workbench clamping device. The heavy-duty isothermal forging hydraulic press is characterized in that a combined transverse beam is light in weight and is convenient to transport and produce, and the manufacturing cost can be reduced; a leveling effect is achieved via the leveling cylinders, the leveling response time is shortened, and energy is saved greatly; through the upper knock-out device, successful demolding of workpieces can be realized, and the workpiece forging and pressing quality is ensured; and accurate positioning and stable running of a press workbench can be realized, and the production requirement of forging equipment for heavy-duty aviation forgings is met.

The invention discloses a plate-feeding press wheel mechanism of a direct plate-making machine (CTP). A rocker arm is also rotated on the support shaft, the first end of the rocker arm is located below the limit block, and the limit block is equipped with an adjusting bolt whose lower end is on the upper surface of the first end of the rocker arm. The two ends are located under the pressure plate, and a compression spring is provided between the pressure plate and the upper surface of the second end of the rocker arm, and a pressure wheel device is installed on the second end of the rocker arm; the lifting of the rocker arm can be adjusted by adjusting the adjusting bolt on the limit block. Up and down, so as to drive the pressure roller installed on the rocker arm to increase or decrease the pressure between it and the plate. Due to the existence of the compression spring between the rocker arm and the platen, there can be an appropriate pre-tightening force between the pressure roller and the plate, so that it is no longer necessary to adjust the pressure of the pressure roller due to changes in the thickness of the plate, making the process Version stability has been improved.

The invention discloses a roll material rotating structure for providing proper tension for a roll material. The roll material rotating structure comprises a base, a rotating shaft, two rubber blocks, two fastening devices and a roll material mounting disk, wherein an accommodating hole is formed in the base; two opposite pivoting holes are formed in the side wall of the accommodating hole; the rotating shaft is arranged in the accommodating hole; the two rubber blocks are respectively arranged in the two opposite pivoting holes and are respectively in contact with the rotating shaft; the two fastening devices are respectively arranged in the two opposite pivoting holes and are respectively in contact with the two rubber blocks; the roll material mounting disk is connected with the rotating shaft; a roll material mounting device for mounting the roll material is fixed on the roll material mounting disk. According to the roll material rotating structure, control on the tension of the roll material is realized by adjusting the tightness of the fastening devices, and the roll material rotating structure is easy and convenient to use.

The invention provides a high-precision water level measuring device for a water level meter, which belongs to the technical field of water level meters, and includes a device that is arranged on one side of a furnace body and forms a connector structure through a first pipe body, an elbow joint, and a second pipe body and the furnace body. A display cylinder, the side wall of the display cylinder is provided with an observation port, the outside of the display cylinder is provided with a second pressure gauge for detecting the internal pressure of the display cylinder, and a display glass is provided at the observation port. The embodiment of the present invention has the advantages of convenient use and high measurement accuracy. It can measure the liquid level of the furnace body in real time and accurately according to the pressure change inside the furnace body. The first drive rod, the second drive rod and the The pressure plate moves up and down, thereby increasing or decreasing the pressure inside the display tube, so that the pressure inside the display tube and the furnace body are always equal, ensuring that the liquid level inside the display tube is equal to the liquid level inside the furnace body, and improving the display accuracy of the display tube.

A vehicle has a vehicle system with a waste heat fluid. An expander, a condenser, a pump, and an evaporator are provided in sequential fluid communication in a thermodynamic cycle containing a working fluid. The evaporator is configured to transfer heat from the waste heat fluid to the working fluid. At least one valve adjacent to the pump is controlled to control fluid flow through at least one chamber to maintain a pressure of the fluid at a pump inlet at a threshold pressure above a saturated vapor pressure associated with a temperature at a condenser outlet when ambient temperature varies.