5results about How to "Uniform impact force" patented technology

This utility model relates to the field of drilling technology for soil or rock layers, specifically to a one-way bypass valve for a screw drill and the screw drill itself. The drill includes a one-way bypass valve for unidirectional drilling fluid flow. The one-way bypass valve includes a valve body with a valve sleeve inside its inner bore. A one-way valve is located at the outlet end of the valve sleeve. The one-way valve includes a one-way valve seat with a support plate at the end furthest from the valve sleeve. The support plate has a drain hole for drilling fluid passage. A compression spring is also provided on the support plate, and a valve block is located at the other end of the spring. The one-way valve seat has a shoulder near the valve sleeve to stop the valve block. The spring force causes the valve block to abut or disengage from the shoulder, thus closing or opening the one-way valve seat. The compression spring in this utility model is positioned below the valve block, preventing the valve block and spring from being washed away by the drilling fluid with significant impact force, thereby improving the reliability of the entire device.

The freeze dryer vacuum pump comprises an end cover body, a pump body assembly and a motor assembly which are in transmission connection are arranged at the two ends of the end cover body respectively, an oil tank shell in sealing connection with the end cover body is further arranged on the end cover body, and the oil tank shell communicates with an inner cavity of the pump body assembly; an exhaust assembly connected with the oil tank shell in a sealed mode is arranged at the top of the oil tank shell and comprises a valve block capable of moving up and down. The end cover body is provided with a gas ballast assembly used for controlling the communication state of a flow channel in the end cover body and the pump body assembly, and the gas ballast assembly comprises a rotary knob body capable of rotating relative to the end cover body. The gas ballast assembly is matched with the exhaust assembly for exhausting, the gas ballast assembly is good in sealing performance and stable in structure, the sealing and filtering effects of the exhaust assembly are good, and the overall exhaust effect is greatly improved.

The utility model provides a bracket suitable for safe transfer of a liquid chlorine steel cylinder, which comprises a base, a group of supporting mechanisms are arranged on the upper portion of the base, the liquid chlorine steel cylinder is placed on the supporting mechanisms, reinforcing rings are symmetrically arranged on the outer side wall of the liquid chlorine steel cylinder, and fixing frames are arranged on the upper portion of the base and located on two sides of the arc-shaped outer wall of the liquid chlorine steel cylinder. Due to the fact that the base is provided with the fixing frames and the flexible restraining pieces, axial movement of the liquid chlorine steel cylinder can be effectively limited, collision and friction caused by bumping and sudden braking in the transportation process are avoided, the surface of a valve and the surface of the steel cylinder are protected, the leakage risk is reduced, and the transportation safety is improved.

This invention belongs to the field of semiconductor molding compound strength testing technology, specifically a strength testing device for semiconductor molding compounds. It includes a C-shaped frame, a first sleeve fixedly connected to the C-shaped frame, a holding plate slidably connected to the first sleeve, a drive motor fixedly connected to the C-shaped frame, an impact member slidably connected to the C-shaped frame, a threaded rod fixedly connected to the output shaft of the drive motor, a movable plate threadedly connected to the threaded rod, a support rod fixedly connected to the lower side of the holding plate, a splined rod with a first floating plug fixedly connected to the splined rod, and a second floating plug slidably connected to the first sleeve. This invention automatically adjusts the height of the holding plate by changing the flow state of the liquid in the first sleeve and the position of the lower pressure plate, ensuring that the distance between the upper surface of molding compounds of different thicknesses and the lower surface of the impact member is consistent. This allows the impact member to apply a consistent impact force to molding compounds of different thicknesses, improving testing efficiency.

The utility model relates to the technical field of child trampoline, and discloses an outdoor child trampoline with an anti-rollover stable structural design, which comprises an elastic trampoline surface, a safety protection net component and an anti-rollover support frame component, the elastic rope assemblies are evenly distributed between the elastic trampoline surface and the trampoline outer frame, elastic cloth is further arranged between the elastic trampoline surface and the trampoline outer frame, and the elastic cloth cover and the elastic trampoline surface form a certain inclination angle. The elastic cloth is made of high-elasticity fiber materials. Through the design of the safety protection net component and the anti-rollover supporting frame assembly, the overall stability of the trampoline is remarkably improved, rollover accidents are effectively prevented, and the safety of children is ensured; meanwhile, through optimal configuration of the elastic cloth and the elastic rope assembly, the elasticity and durability of the trampoline are enhanced, the service life of the trampoline is prolonged, and the user experience is improved.