5results about How to "Does not affect support" patented technology

The invention discloses a modified fly ash ceramsite proppant and a preparation method thereof, and a combined proppant and a preparation method and application thereof, and relates to the technical field of shale oil and gas fracturing. The modified fly ash ceramsite proppant comprises the following components which are mixed and granulated: fly ash, bauxite, barite powder, a recycled molecular sieve, a recycled mesoporous material, optional calcite powder and optional bentonite. The environment-friendly propping agent disclosed by the invention solves the problems of high production cost and application cost of the fracturing propping agent taking aluminum-containing minerals as main raw materials, and takes the harmless treatment of recyclable resources and industrial wastes in the whole industrial chain of the petrochemical industry into consideration, and the industrial wastes of the downstream of the oil refining and chemical industry are applied to the upstream petroleum fracturing propping agent.

The invention discloses a head and neck supporting device for cosmetic plastic surgery for medical cosmetology, and relates to the technical field of medical instruments, and the head and neck supporting device is characterized by comprising a neck supporting outer package, a neck supporting core body is embedded in the neck supporting outer package, a fixing block is fixedly connected to the bottom of the neck supporting outer package and the bottom of the neck supporting core body, and a motor is embedded in the neck supporting core body; the two ends of the motor are in shaft connection with supporting rods, two connecting rods are connected between the two supporting rods, the two connecting rods are connected with a head supporting core body, the head supporting core body is wrapped by a head supporting outer package, the head supporting core body and the head supporting outer package are symmetrically provided with two limiting grooves, and supporting air bags are arranged in the limiting grooves. A connecting pipe close to the neck support core body is connected between the two supporting air bags in a penetrating mode, the two supporting air bags are provided with air guide pipes away from the neck support outer package, and the air guide pipes are provided with rubber plugs. The head and neck support device is simple and practical in structure, convenient and fast to operate, capable of providing comfortable and healthy head and neck support for a patient, small in occupied space and capable of providing a wider space for operation of an operator.

This invention discloses a quenching device based on auxiliary leaf springs, comprising: a frame and a quenching pool disposed at the bottom of the frame for quenching the leaf springs; and a conveying mechanism disposed at the upper part of the frame for vertical and horizontal conveying of the leaf springs. The conveying mechanism includes two sets of swing conveying assemblies disposed on the inner wall of the frame, and a slide rail disposed on the swing conveying assemblies. A slidable slider is installed inside the slide rail. A pull rope is connected to a fixing bar. The end of the pull rope away from the fixing bar extends through a through hole where a movable column is located to the bottom of the slide rail and is connected to a tray assembly. The tray assembly is used to support the leaf springs. This invention effectively realizes an integrated conveying and quenching process when the leaf springs on the tray assembly move in both vertical and horizontal directions, thereby greatly improving work efficiency.

This utility model relates to the field of motor housing technology, and more particularly to an extruded aluminum heat dissipation housing structure for an internal rotary motor. The structure includes multiple heat dissipation fins fixedly installed on the surface of the housing, multiple through holes fixedly installed on the bottom of the housing surface, and a rear cover movably installed on the inner side of the bottom of the housing. This utility model secures the rear cover to the bottom of the housing by adapting it to the interior of the housing and tightening it sequentially into the through holes and threaded holes with locking screws. This allows for a detachable connection between the rear cover and the housing. Therefore, when either the rear cover or the housing is damaged, only the corresponding part needs to be replaced, eliminating the need for a complete replacement. Furthermore, the removal of the rear cover facilitates the disassembly and assembly of the stator and rotor structure inside the housing, simplifying maintenance. Since the rear cover and housing are detachable and not integrally formed, the housing can be processed using small-tonnage aluminum extrusion equipment.

This utility model belongs to the field of medical device technology, specifically relating to a lumbar spine protector. This lumbar spine protector includes a lumbar spine fixation bracket and a back strap. The lumbar spine fixation bracket includes a front fixation plate and a rear fixation plate arranged front to back, side plates respectively arranged on both sides of the front and rear fixation plates, and a detachable rear support plate arranged inside the rear fixation plate for supporting the lumbar spine. One end of the side plate is hinged to the front fixation plate and the other end is hinged to the rear fixation plate. The rear fixation plate includes multiple rear pieces arranged at intervals along the vertical direction and two pressure-reducing elastic bands arranged opposite each other between adjacent rear pieces to deform the adjacent rear pieces. In use, under the action of the multiple rear pieces and the two pressure-reducing elastic bands arranged opposite each other between adjacent rear pieces to deform the adjacent rear pieces, the rear fixation plate achieves a small left-right sway between adjacent rear pieces, allowing the patient a small range of motion, which improves patient comfort without affecting the support of the lumbar spine fixation bracket.