20results about How to "Reduce contact pressure" patented technology

This utility model discloses a wooden door for use with a floor spring, including a front panel (1) and a back panel (2). Two vertical beams (3) are provided between the front panel (1) and the back panel (2). An upper horizontal beam (4) and a lower horizontal beam (5) are provided between the front panel (1) and the back panel (2). Multiple reinforcing beams (6) are provided between the front panel (1) and the back panel (2). A limiting beam (7) is provided on the inner side of one of the vertical beams (3). The upper and lower ends of the limiting beam (7) are fixed to the upper horizontal beam (4) and the lower horizontal beam (5) respectively. The front panel (1) and the back panel (2) are both fixed to the limiting beam (7). A tightly fitted iron square tube (8) is provided between the limiting beam (7) and the vertical beam (3). The bottom of the iron square tube (8) is provided with a connecting shaft (9) that passes through the lower horizontal beam (5). The bottom of the connecting shaft (9) is provided with a socket (10) that mates with the floor spring. This utility model has the advantage of a long service life.

The utility model discloses a walking mechanism of an anti-corrosion operation and maintenance robot for a steel box girder structure bridge, which belongs to the technical field of robots and comprises a base, and anti-corrosion equipment is mounted on the base. Each walking part comprises a driving assembly connected to the bottom of the base, the output end of each driving assembly is connected with a connecting frame, a plurality of sliding grooves are formed in the bottom of the base, and the multiple sliding grooves correspond to the multiple walking parts in a one-to-one mode. According to the walking mechanism, the sliding groove with the two low ends and the high middle is formed, when the driving assembly drives the sliding block to move through the connecting frame and the connecting column, the sliding block moves from one end of the sliding groove to the other end of the sliding groove, the sliding block can conveniently drive the moving wheels to cross a gap through the mounting frame, and the walking mechanism can freely walk on a bridge floor; meanwhile, the moving wheels rise and then fall in the process of crossing the bridge deck gap, collision between the moving wheels and the bridge deck gap is effectively avoided, and the moving wheels and the bridge deck are protected.

A gas processing system includes a vessel (102) defining a cavity (106) for processing a gas. The vessel includes a process gas inlet (108) for receiving a process gas at an input pressure and a process gas outlet (110) for discharging the process gas at an output pressure. The gas processing system also includes a shaft (122) coupled to the vessel and a stepwise sealing system (114) including a plurality of seals (136) spaced along the shaft. The shaft is configured to transfer mechanical energy to or from the gas in the vessel. Each adjacent pair of seals defines a corresponding pressure space therebetween. One of the pressure spaces is an equalization pressure space (144a) in hydraulic communication with the process gas inlet via a flow line (116) such that, in operation, a pressure in the equalization pressure space is maintained at an equalization pressure relative to a pressure in the process gas inlet.

The utility model discloses a honing head structure and a honing device. The honing head structure comprises a honing head body, a plurality of installation bases arranged in the circumferential direction of the honing head body, polishing components arranged on the installation bases, a movable rod coaxially arranged and arranged in the honing head body in a penetrating mode, and an expansion and contraction component arranged on the movable rod in a sliding and sleeving mode and capable of sliding in the axial direction of the honing head body. The mounting base can expand and contract in the radial direction of the grinding head body, and the outer wall of the expanding and contracting component is matched with the inner wall of the mounting base, so that the expanding and contracting component can be driven to slide on the moving rod in the first direction when the mounting base shrinks in the radial direction, and the mounting base is driven to expand in the radial direction when the expanding and contracting component moves in the second direction; a pre-tightening elastic piece is arranged in the grinding head body and used for applying elastic force in the second direction to the expansion and contraction component so that the installation base can contract in the radial direction to drive the expansion and contraction component to slide, and then the expansion and contraction component can be driven to elastically reset. The honing and grinding device has the beneficial effect that the honing and grinding uniformity can be improved.

This invention discloses a torque balancing device and an oil supply and return system, belonging to the technical field of submersion motion test equipment. The torque balancing device is installed on a submersion motion test bench, which includes a column, a platform located inside the column, a crossbeam fixed to the top of the column, and a lifting actuator fixed above the crossbeam. The movable end of the lifting actuator is connected to the platform. The torque balancing device is located between the column and the platform. It is used to counteract the overturning torque caused by the control error of the lifting actuator and the overturning torque caused by a malfunction in the control system of the submersion motion test bench, thus enabling the platform to move vertically along the column. The torque balancing device includes a torque balancing cylinder, a ball joint, and a hydrostatic support plate. The torque balancing cylinder is fixed to the corner beam of the platform, and the hydrostatic support plate is attached to the surface of the column. The piston rod of the torque balancing cylinder is connected to the ball head of the ball joint by screws, and the ball socket of the ball joint is connected to the hydrostatic support plate by screws.

This utility model discloses a comfortable medical protective mask, including a mask body, a mask surface, and ear loops. The mask body includes a mask surface and two plastic frames symmetrically arranged on both sides of the mask surface. A face support strip, fixedly connected to the mask surface, is arranged parallel to the inner side of both plastic frames. An ear loop is provided on one side of each plastic frame via a mating protrusion, and an adjustment block is installed on the ear loop. A first strap and a second strap are respectively provided at the top of the two ear loops. A buckle is provided at the top of the first strap, and a fixing strip matching the buckle is provided at the top of the second strap. This utility model, by symmetrically arranging two plastic frames on both sides of the mask surface and providing a face support strip fixedly connected to the mask surface parallel to their inner sides, creates a three-dimensional space inside the mask surface when unfolded, providing a more comfortable breathing experience when worn.

This invention relates to the field of motor mounting stability testing technology, specifically to a motor mounting stability testing device based on multi-environment simulation. The device includes a testing box containing a fixed plate. A vibration frame is mounted on top of the fixed plate, and a mounting base for supporting and mounting the motor is mounted on top of the vibration frame. Mounting strips are flexibly mounted on both sides of the mounting base. Inverted T-shaped rods are symmetrically positioned at the bottom of the mounting strips, sliding through the mounting base. A second spring is positioned between the lower end of the inverted T-shaped rod and the bottom of the mounting base, and the second spring is sleeved on the inverted T-shaped rod. Multiple pressure sensors are also mounted at the bottom of the mounting strips. By installing pressure sensors at the bottom of the mounting strips and utilizing the reset characteristics of the second springs to construct a follow-up detection structure, when any mounting bolt loosens or its preload decreases, the mounting strip will partially lift under the action of the second spring, resulting in a significant reduction in the contact pressure between the corresponding pressure sensor and the bottom of the mounting groove.

Provided is a compressor. The compressor includes a piston structure including a guide member that reciprocates in an axial direction inside a cylinder, and a magnet frame that supports a moving member that moves together with the piston structure. The piston structure includes the guide member, a mounting member connected to the magnet frame, and an elastic member that can be elastically deformed and is disposed between the guide member and the mounting member. The guide member further includes a first coupling portion that is coupled to an inner circumferential surface of the elastic member, and the mounting member further includes a second coupling portion that is coupled to an outer circumferential surface of the elastic member.

The utility model discloses an inner octagonal pipe belongs to pipe material technical field, including the pipe body of octagonal structure, the inner chamber of pipe body also is octagonal structure, the pipe body includes work section, flared connecting section and embedded connecting section, is equipped with the transition section between work section and flared connecting section, and flared connecting section and transition section are located one end of work section, and embedded connecting section is located the other end of work section, flared connecting section, transition section work section and embedded connecting section integrated molding. The pipe body of octagonal structure in the utility model, compared with the circular pipe body, has increased the contact surface area between pipes, and is more stable in storage and transportation, is convenient for safe stacking, and the contact pressure between pipes is small, and the pipe is not easy to deform, the pipe cavity of octagonal shape, and the traditional circular pipe cavity of same inner diameter is greater than the pipe cavity capacity, and the drainage capacity is increased, the first wave crest on work section M type or n type increases the surface area of contact with the outside, and the pressure intensity that the pipe body receives reduces, and the service life is improved.

The application relates to the technical field of compact pigging, and discloses a compact pig, which comprises a shell, a bypass valve is fixedly arranged at the side wall of the shell, a main ball valve one is fixedly arranged at the top of the side wall of the shell, a main ball valve two is fixedly arranged at the bottom of the side wall of the shell, a drainage valve is fixedly arranged at the bottom of the side wall of the shell, a purification valve is fixedly arranged at the side wall of the shell, a quick-opening blind plate is rotatably arranged at the side wall of the shell, a pigging shell is slidably arranged at the inner wall of the shell, when the pigging shell moves, the impeller is subjected to the thrust of liquid, rotates, drives the rotating shaft and the rotating block to synchronously rotate, when the rotating block rotates, the cleaning plates are forced to move, when the rotating block rotates to a certain angle, the thrust on the two cleaning plates is lost, the rotating blocks continuously rotate, the cleaning plates are alternately contacted with the pipe wall, the contact pressure is lower, the friction is smaller, under the same pushing pressure difference, the power is more easily maintained, and the pigging shell can be kept moving for a longer time.

The application provides a cleaning device and a cleaning equipment. The cleaning device comprises a device body, a rolling brush rotatably arranged on the device body, and a water outlet assembly arranged on the device body and configured to spray water on the rolling brush. The water outlet assembly comprises a receiving groove. A scraping assembly is arranged below the water outlet assembly and comprises a main plate, an adapter and an elastic member. The adapter is rotatably connected to the water outlet assembly or the device body. The main plate is divided into a first part and a second part by a rotation axis of the adapter. The first part is in interference contact with the rolling brush. The elastic member is in elastic abutment with the second part and the water outlet assembly to drive the second part away from the receiving groove. The application adjusts the inclination angle of the main plate by rotating the main plate driven by the rolling brush, so that the rolling brush can clean the dirt left on the surface of the main plate. When the rolling brush reverses, the contact pressure between the rolling brush and the main plate is reduced, thereby reducing the abrasion of the rolling brush fabric.

A comfort system, a vehicle seat including the comfort system, and a method of operating the comfort system are disclosed. The comfort system includes a plurality of comfort units disposed within the vehicle seat; a control module that communicates signals with the plurality of comfort units to control the operation of the plurality of comfort units; and a plurality of sensors, including at least one or more sensors adapted to sense displacement of the plurality of comfort units (e.g., strain gauges), air pressure within the comfort units (e.g., pressure sensors), or both.

The utility model discloses a tracheotomy vent tube which comprises a vent tube, a vent cavity is arranged in the vent tube, a sleeve bag used for sealing a gap between the trachea of a patient and the vent tube is arranged on the vent tube, and sponge-shaped materials are filled in the sleeve bag, so that the surface of the sleeve bag has a fixed shape and can deform. According to the tracheotomy tracheal tube, as the sleeve bag arranged on the tracheal tube is filled with the sponge-shaped material, the surface of the sleeve bag has a fixed shape and can be deformed, and when the sleeve bag is inserted into the trachea cut by a patient, the contact pressure between the sleeve bag and the inner wall of the trachea of the patient is small due to the flexible characteristic of the sponge-shaped material; insertion damage to a patient is avoided, the trachea cannula can automatically recover to the original shape after being inserted, the gap between the trachea of the patient and the breather pipe is sealed, and the sealing performance is better.

The utility model relates to glass production technical field, more particularly, relate to a kind of glass plate cooling and conveying device, including rack, conveying roller group and auxiliary roller group, wherein, conveying roller group is provided with driving roller, and driving roller and rack are rotatably connected;Auxiliary roller group sets positive pressure roller;Positive pressure roller is hollow structure;The surface of positive pressure roller is provided with gas guide hole, and gas guide hole and gas source mechanism are communicated;All driving roller and positive pressure roller jointly form the conveying plane for conveying glass plate material.It is designed through the structure, air provided by gas source mechanism is sprayed upward from gas guide hole, forms air film, so that the physical contact area and contact pressure of glass plate material with driving roller and positive pressure roller surface during conveying process are greatly reduced, the wear problem of roller surface caused by sliding friction in traditional roller conveying is reduced, so that it can be ensured that conveying plane can long-term maintain initial flatness precision.

The utility model relates to a clamp capable of clamping rims of various specifications, which comprises an air cylinder body, one side of the air cylinder body is connected with a plurality of sliding block bodies capable of sliding in a pneumatic driving mode, one side of at least one sliding block body is provided with a first clamping piece, and the end of the first clamping piece can deform. A second clamping piece used for providing supporting force for the periphery of the rim is arranged on one side of at least one sliding block body, and wheel rims of different specifications and models can be clamped by changing the distance between the first clamping piece and the second clamping piece. The rim diameter error is compensated through elastic deformation of the flexible element, stable guiding is provided through the limiting groove of the fixing plate, the dual effects of elastic compensation and rigid positioning are achieved through combination of the flexible element and the limiting groove, and rims with different diameters can be clamped.

This invention provides a roll-over monitoring and control system and method for rolled glass rollers, relating to the field of glass manufacturing technology. It includes: multiple temperature monitoring devices arranged along the length of the rolled glass rollers for real-time monitoring of the surface temperature of various areas on the rollers; and a controller that, when any surface temperature exceeds a first preset threshold, controls the roller motor to slow down, increases the cooling water flow of the roller liquid cooling device, and activates the purging device, while simultaneously issuing a roll-over alarm to on-site personnel to remind them to conduct on-site inspections and manual intervention. The beneficial effect is that the handling procedure is initiated at the nascent stage of the roll-over phenomenon, accurately controlling the "golden 5-second" window for fault handling, reserving crucial time for on-site personnel to arrive and implement subsequent manual intervention, thus suppressing the rapid spread and expansion of the roll-over defect from the source, and completely breaking the passive predicament of traditional handling schemes where the fault has already developed to a moderate stage by the time it is discovered.

The application relates to the technical field of transformers, in particular to a transformer installation and debugging method in power transmission and distribution engineering, which comprises the following steps: connecting a lifting steel wire rope of a crane with a falling micro-control device, connecting the lower end of the falling micro-control device with a transformer lifting device, lifting the transformer to above an installation foundation through the falling micro-control device of the crane, adjusting the position of the transformer to align the transformer with pre-buried parts or installation bolt holes on the foundation; the transformer installation and debugging method is suitable for the installation of intelligent large transformers, can reduce the lifting impact on the intelligent large transformers, and can visually and accurately control the slow descent of the transformer when the transformer falls onto the foundation, so that the falling control is more accurate and stable.

The invention belongs to the technical field of oil drilling, and particularly relates to a drill rod thread structure with a stress reducing groove and a machining method. An external thread joint main shoulder surface, an external thread joint stress reducing groove, an external thread joint auxiliary shoulder surface and an external thread joint taper pipe thread are arranged on the external thread connection main body; one end of the internal thread connector body is connected with a drill rod, the other end of the internal thread connector body is a threaded connecting section, and an internal thread connector main shoulder face, an internal thread connector stress reducing groove, an internal thread connector auxiliary shoulder face and internal thread of an internal thread connector taper pipe are arranged on the internal thread connector body. The external thread of the external thread connector taper pipe and the internal thread of the internal thread connector taper pipe are connected in a matched mode to bear axial loads, and the main shoulder face of the external thread connector makes contact with the main shoulder face of the internal thread connector to bear torque during connection. The maximum stress of the drill rod thread during working can be reduced, and the service life of the drill rod thread is prolonged.

The utility model discloses a pressure-regulating sealing structure, and relates to the technical field of sealing. A main sealing groove and floating sealing grooves are formed in the peripheral side of the heavy hammer piston, and the floating sealing grooves are formed in the two sides of the main sealing groove in the axis direction of the heavy hammer piston correspondingly; a liquid storage chamber is arranged in the heavy hammer piston; a pressure regulating piston is arranged at the bottom of the liquid storage chamber; the sealing structure comprises a first sealing assembly and a second guiding sealing assembly. The first sealing assembly is arranged in the main sealing groove and comprises a sealing tire and a sealing sliding ring. The second guide sealing assemblies are symmetrically arranged in the floating sealing grooves in the two sides of the main sealing groove, and each second guide sealing assembly comprises a supporting tire and a floating sealing guide ring; the heavy hammer piston moves downwards under the action of gravity to cause the pressure regulating piston to relatively move upwards, so that the amount of oil liquid pressed into the sealing tire and the supporting tire in the liquid storage chamber is increased, the sealing slip ring and the floating sealing guide ring are pushed to move towards the cylinder wall, and a sealing gap between the heavy hammer piston and the cylinder wall is dynamically reduced; therefore, the dynamic sealing structure of the heavy hammer piston with large cylinder diameter and large pressure is provided.

The utility model relates to non-oriented silicon steel production technical field discloses non-oriented silicon steel continuous production line, including base, the base top installs conveyer, the conveyer top right side is provided with limit component, the base top left side is fixedly connected with support frame, the support frame in top wall is provided with adjusting assembly, the base top department installs hot rolling mill, the base top is provided with annealing furnace, annealing furnace installs between support frame with hot rolling mill, limit component includes two support plates, two support plate bottom all are fixedly connected in the conveyer top. In the utility model, through motor no.