18 results about "Opening height" patented technology

The utility model relates to the technical field of cases, in particular to a front IO replaceable case. The front IO replaceable case comprises a case body, an IO groove is formed in the front side of the case body in a penetrating mode, a CD driver groove is formed in the front side of the case body, the upper side and the lower side of the inner side wall of the IO groove are each provided with a set of first adjusting grooves, and second adjusting grooves are formed in the left side of the inner side wall of the IO groove and the left side of the inner side wall of the first adjusting grooves. A storage groove is formed in the top of the CD driver groove, and the storage groove penetrates through the front side of the case; according to the device, a second hand-screwing bolt is pulled rightwards to drive a second adjusting block to slide rightwards in a second adjusting groove, so that the effect of changing the opening length of the IO groove is achieved, a first hand-screwing bolt is pulled up and down to drive a first adjusting block to slide up and down in a first adjusting groove, and the effect of changing the opening height of the IO groove is achieved; by freely adjusting the size of the IO opening, IO panels of different types of mainboards can be replaced by the IO slot of the case.

The application relates to a laminating device and laminating equipment thereof, which comprises a pressing plate, a laminating plate and an ejection mechanism. The laminating plate is arranged in pressing connection between the pressing plate and the laminating plate. The ejection mechanism comprises a first elastic member and a second elastic member, and the first elastic member and the second elastic member are arranged in the accommodating space. The first elastic member and the second elastic member can abut to the laminating plate and push the laminating plate away from the pressing plate. The double elastic member structure can provide a large demolding ejection force, and sufficient force is ensured to push out the laminating plate. The ejection mechanism can rapidly act at the moment when the hot press is opened, timely push out and avoid the laminating plate and the pressing plate from being attracted, ensure normal opening height, maintain production continuity and improve production efficiency. The ejection mechanism can reduce manual labor intensity, automatically push out and reduce safety risks without manual labor. The ejection mechanism has high universality, can be integrated on different specifications of pressing plates, does not need to reform the hot press on a large scale, and reduces equipment reform cost.

This utility model belongs to the field of foundation pit construction, and specifically relates to a recyclable protective device for retaining walls. It includes several inverted U-shaped protective plates, the inner width of which is equal to the thickness of the retaining wall, and the height which is less than the height of the retaining wall but greater than the opening height. Adjacent inverted U-shaped protective plates are fixed together with bolts. Handles are provided on the sides of the inverted U-shaped protective plates, and circular holes are provided at the bottom. This protective device is simple to manufacture, low in cost, lightweight, can be manually transported, and is quick to assemble and disassemble. It is suitable for protecting open retaining walls of different lengths, avoiding construction safety hazards, and is recyclable, thus reducing protection costs.

The invention relates to the technical field of hole depth measurement, and discloses a forge piece inner cavity hole depth measuring device, which comprises an insertion pipe used for being placed in a forge piece inner cavity, and the outer side of the insertion pipe is fixedly sleeved with an abutting ring used for being in contact with the forge piece inner cavity; one end of the inserting rod penetrates through and extends to the outer side of the inserting pipe, a semicircular groove is formed in the top of the inserting rod, and the top end of the inserting pipe is located in the forming height of the semicircular groove; the limiting mechanism is arranged on the outer side of the abutting ring and used for being attached to the exposed face of the forge piece part. Hole depth measurement can be rapidly completed without damaging a product, and the detection efficiency is improved.

The present application relates to the technical field of intelligent control, in particular to a variable air volume adjustment method of a fume hood, an electronic device and a storage medium, the fume hood has an opening, the opening is provided with a sliding door, the method comprises the following steps: in response to the experimental mode selected by the user on the interactive interface of the terminal, obtaining the target face wind speed set by the user and the opening height of the sliding door; obtaining the current height of the sliding door detected by the displacement sensor, and determining the moving distance and the moving direction of the sliding door according to the current height and the opening height; triggering the controller to control the driving unit to drive the sliding door to move in the moving direction until the displacement sensor detects that the sliding door reaches the opening height; obtaining the width of the sliding door, and determining the target exhaust air volume of the fume hood according to the width of the sliding door, the opening height and the target face wind speed; and triggering the controller to control the variable air volume venturi valve to adjust the air volume of the fume hood to the target exhaust air volume; the present application can realize accurate and efficient control of the face wind speed and the exhaust air volume in the fume hood.

To prevent the accumulation of sand and dust on the rails, reduce wear between the rollers and rails, prevent rail rust, achieve a simple structure, reduce costs, lessen the weight burden on workers, and ensure sufficient opening height. [Solution] The expandable trailer house 1 has a ceiling 21, side walls 22-25, and a floor 26, and comprises a box-shaped main body 2 having a rectangular opening 29 in the side wall 22 in the longitudinal direction L, a frame 3 that can change between a stored state and an expanded state and is attached to the opening 29, and rail members 4. The frame 3 is divided into a roof panel 31 that is rotatably attached to the upper edge in the longitudinal direction of the opening 29, a floor panel 32 that is rotatably attached to the lower edge in the longitudinal direction L of the opening 29, a left side panel 33 that is rotatably attached to the left edge in the height direction H of the opening 29, a right side panel 34 that is rotatably attached to the right edge in the height direction H of the opening 29, and a front panel 35 that has a roller 35b on its upper edge 35a that can move along the rail members 4.

This utility model discloses a tool sharpening machine, including a base, a grinding disc mounted on the base, a motor for driving the grinding disc to rotate, and a protective shell mounted on the base corresponding to the outer side of the grinding disc. The protective shell includes a fixed shell mounted on the base and a movable shell that can move up and down relative to the fixed shell and has an opening. The height of the fixed shell is less than the height of the grinding disc. The tool sharpening machine also includes a pushing mechanism for pushing the movable shell up and down. In use, when the height of the grinding disc is reduced to less than the opening height of the movable shell, the user can operate the pushing mechanism to push the movable shell downwards to adjust the opening height of the movable shell to be less than the height of the grinding disc. This allows the grinding disc to continue to be used for sharpening operations, making full use of each grinding disc, thereby reducing grinding disc waste and lowering grinding costs.

The utility model discloses a novel pressure relief manhole with a valve disc free of a guide structure, and relates to the technical field of pressure relief manholes. The novel pressure relief manhole comprises a valve body, a valve disc, a balance weight disc and a rainproof cover, and the valve disc is in a circular truncated cone shape and is arranged on a valve seat of the valve body; the position change of separation or contact between the valve disc and the valve seat is realized under the action of external force; the balance weight disc is arranged on the valve disc, and the rainproof cover is located above the valve disc and detachably connected with the valve body. According to the utility model, the opening height of the valve disc can be obviously increased by utilizing the circular-truncated-cone-shaped valve disc, so that the ventilation capacity is increased, and the valve disc can be matched with the valve seat to realize guiding only by utilizing the structural characteristic that the valve disc is provided with an inclined surface without using an additional guiding structure, so that the valve disc can smoothly fall back, and the problem of disc clamping is avoided.

The utility model relates to a safety valve with indicating function, including valve main body, valve clapper subassembly, valve cover, valve rod, elastic component, adjusting assembly, protective cover, the safety valve still include indicating component, the indicating component include nameplate scale, indicating rod, the nameplate scale connection in the valve cover's outer surface, and / or the protective cover's outer surface, indicating rod one end be connected in the elastic component on, and / or the valve rod, indicating rod other end with the nameplate scale cooperation indicates. The utility model's elastic compression amount visualization, can accurate judgment elastic compression amount whether meet standard, can accurate, fast adjusting setting pressure of safety valve, reduce sealing surface wear and tear risk, can visual judgment whether safety valve opens, and opening height whether satisfies standard requirement, simple structure, reliable, have good economy.

The utility model relates to the technical field of automobile assembly, in particular to a tail gate supporting rod which comprises an upper supporting portion and a lower supporting portion. An upper abutting groove is formed in one end of the upper supporting part, and the upper abutting groove can abut against the to-be-abutted position of the tail door; a lower abutting groove is formed in one end of the lower supporting part, and the lower abutting groove can abut against the to-be-abutted position of the vehicle body; the end, away from the upper abutting groove, of the upper supporting part is movably connected with the end, away from the lower abutting groove, of the lower supporting part. The upper supporting part and the lower supporting part can move in the same direction or in the opposite directions and are used for adjusting the distance between the upper abutting groove and the lower abutting groove. According to the tail gate supporting device, the original mode that the tail gate is supported manually and supported purely through a supporting rod is replaced, the tail gate can be supported, corresponding adjustment can be conducted according to the opening height of the tail gate, the tail gate supporting mode is simplified, the labor cost is saved, and the assembling work efficiency is improved.

The luggage trundle support assembly comprises a support, a spring and a sliding sleeve, a vertical shaft hole is formed in the support, an inner supporting wall for supporting the spring is arranged in the vertical shaft hole, the sliding sleeve is inserted into an upper end opening of the vertical shaft hole and can slide in the axial direction of the vertical shaft hole, and the spring is arranged between the inner supporting wall and the sliding sleeve. The support is provided with a sliding sleeve limiting device which is correspondingly arranged at the upper end opening of the vertical shaft hole and used for limiting the sliding sleeve in the vertical shaft hole, the sliding sleeve limiting device limits the limiting position of the sliding sleeve sliding in the direction away from the vertical shaft hole, and therefore a spring assembling space between the bottom of the sliding sleeve and the inner supporting wall is formed in the vertical shaft hole in a limiting mode. The sliding sleeve is limited on the support, the spring opening height in the assembling process can be effectively controlled, assembling operation of the trundle is facilitated, and the product assembling yield is increased.

The invention belongs to the field of metal material processing and forming, and discloses a method for reducing the die forging forming tonnage of a super-huge GH4169 alloy turbine disc, which comprises the following steps of: dividing a forge piece into a hub area, a radial plate area and a rim area along the radial direction; the wheel hub is placed according to the shape; the radial plate is designed in a non-shape-following manner, so that height differences H1 and H2 are respectively formed between the radial plate and the upper and lower surfaces of the hub; a flow control slope composed of a first inclined face (theta1) and a second inclined face (theta2) is constructed at the transition position of the radial plate and the rim. A die cavity is constructed according to the shape of the forge piece, a pressure reduction slope composed of an inclined face (theta3) and the opening height H3 is arranged on the outer side of the die, and the conditions that H3 is equal to 235-1.2 theta3, and theta3 is equal to 40-75 degrees are met. According to the method, metal is guided to be sequentially filled through the flow control slope, a traditional bridge part is replaced by the pressure reduction slope, the die forging tonnage is remarkably reduced, the GH4169 extra-large turbine disc forge piece with the diameter larger than or equal to 2 m can be formed on a 800 MN press at a time, and the quality of the forge piece is good.

This invention relates to the field of breather valve technology, specifically a metal-sealed breather valve with controlled reseating impact energy and its design method. The valve includes a valve body, a valve seat, and a valve disc assembly movable relative to the valve seat between a closed position and a maximum open position. A sealing mating surface is formed between the valve disc assembly and the valve seat, comprising a first smooth surface and a second smooth surface. By providing a sealing mating surface composed of the first and second smooth surfaces between the valve disc assembly and the valve seat, this invention improves the fitting accuracy of the valve disc assembly after reseating, thereby reducing leakage and improving sealing stability. Simultaneously, by coordinating the mass, maximum opening height, and second pressure diameter of the valve disc assembly, the single reseating impact energy when the valve disc assembly falls from the maximum open position to the closed position does not exceed an upper limit of impact energy determined based on the allowable damage level of the first and second smooth surfaces.

The utility model discloses a medical edge tool containing box capable of preventing stab injury. The medical edge tool containing box comprises an edge tool box body and a box cover. The box cover is sleeved with a cylinder, the cylinder is provided with a flange, a circular plate is sleeved with the cylinder, a throwing opening and a needle head dismounting hole are formed in the circular plate, and a pull rod is arranged in the center of the top of the circular plate; a positioning mechanism is arranged in the cylinder and comprises a positioning protrusion, a positioning groove matched with the positioning protrusion is formed in the inner wall of the cylinder, and a limiting mechanism for vertically limiting the circular plate lifted to the top end is arranged in the cylinder. A second limiting mechanism for vertically limiting the cylinder body lifted to the top end is arranged on the box cover; according to the sharp tool box, when a needle head is thrown or detached, the throwing operation position can be lifted by a certain height, the height difference between the throwing operation position and a sharp tool in the sharp tool box is increased, and therefore medical workers are not prone to being stabbed by the sharp tool; whether the contents are replaced or not can be reminded according to the descending and resetting conditions of the cylinder and the circular plate.

The utility model provides a door motor mounting plate capable of saving height space, the door motor mounting plate is fixed on the side edge of the door opening edge of an elevator car roof, the door motor mounting plate is formed into a structure with a right-angle section and is fixedly attached to the edge of the car roof, and a mounting hole site is arranged on the surface of the outer vertical face of the door motor mounting plate. A lintel of the elevator door is transversely arranged at the upper end of the door opening space and fixed through the installation hole site, the lower edge of the lintel is lower than the bottom face of the car roof, a door machine is fixedly arranged on the outer side of the lintel, a main body part of the door machine is lifted and fixed by the lintel, and an operation part of the door machine extends downwards and is connected with a door plate. The door machine mounting plate and the car roof structure are integrally arranged, the lintel and the door machine can be directly fixed to the car roof, the lintel is located at the top position of a door opening, the door machine is mounted by means of the space height of the lintel, the distance between the door machine and the car roof can be reduced, the connection reliability is improved, the height requirement is reduced, and the larger door opening height is achieved.

The invention relates to a portable explosion-proof safety valve online verification device, which relates to the technical field of safety valve verification, and comprises a data processing instrument, a safety valve main body and a butt joint stabilizing device. By arranging a tandem mechanical structure composed of the force sensor, the hydraulic oil cylinder, the cushion block, the screw rod and the nut, the safety valve testing device has a limiting function, can manually limit the opening height of the tested safety valve main body, and safely and effectively prevents the safety valve main body from being pulled up excessively. Meanwhile, the safety valve calibration device is small in size, light in weight, portable, practical and capable of being carried by one person to complete field calibration work, and a butt joint stabilizing device is arranged on the outer side of the hydraulic oil cylinder to meet positioning, butt joint and supporting of the calibration device and the safety valve, so that the calibration device and the safety valve are rapidly combined in a butt joint mode. In cooperation with the adjusting assembly, the installation or use height of the verification device can be flexibly adjusted so as to adapt to the use effect of different verification conditions.

The utility model discloses an automatic pressure relief valve for low-temperature industrial gas, which belongs to the technical field of pressure relief valves and comprises a valve body, a valve cover fixed at the upper end of the valve body through a bolt, a gas inlet arranged at the lower end of the valve body, a gas outlet arranged at the right end of the valve body, a sealing ring arranged on the connecting surface of the valve cover and the valve body, and an automatic pressure relief mechanism arranged inside the valve cover. The automatic pressure relief mechanism comprises a valve element assembly, the valve element assembly is composed of a sealing sleeve, a medium channel and a valve clack, the sealing sleeve is fixed to the inner wall of the valve body, and the valve clack is in sliding fit with the inner wall of the sealing sleeve. According to the automatic pressure relief valve for the low-temperature industrial gas, when the medium pressure exceeds a set value, the gas pushes the conical surface of the valve clack to be separated from the conical sealing groove of the sealing sleeve, at the moment, the medium is discharged through a channel formed by the medium channel and the exhaust port, and the distance between the valve clack and the adjusting sleeve is changed by rotating the adjusting sleeve; therefore, the maximum opening height of the valve clack can be adjusted, the medium flow speed can be limited, and sudden drop of system pressure is avoided.