摘要:
Provided is an ear muff (7) comprising a gasket (10), wherein the gasket (10) comprises an installation face (12) having two opposite sides; a covering member (20) comprising a plurality of installation parts (26) and a plurality of spacing parts (28) arranged at intervals, wherein the plurality of installation parts (26) are fixed to any side and the plurality of spacing parts (28) can be separated from the side; and a soft pad (30) covered within the covering member (20). In the process of deformation of the soft pad (30), air can enter and exit the covering member through the spacing parts of the covering member (20) which are not fixed to the installation face, thus aiding deformation of the soft pad. Therefore, the covering member does not need to be perforated, and the scrap rate thereof is reduced.
摘要:
Disclosed is a dual-sensing feedback and transmission system for a linear motor, belonging to the technical field of medical equipment and motors. The system includes a linear motor, a transmission mechanism, and a dual-sensing displacement detection mechanism. One end of the transmission mechanism is fixedly connected to a mover (7) of the linear motor, and the other end thereof is located outside a stator (6) of the linear motor and fixedly connected to a leaf (1) of a multi-leaf collimator directly or by means of a connecting block (2). The dual-sensing displacement detection mechanism is a dual-sensing linear displacement sensor, and includes two sets of reading devices (5) for reading displacement information, and a matching reference ruler (4). The reading devices (5) are fixed to an end or exterior of a casing of the stator (6) of the linear motor close to the leaf (1) of the multi-leaf collimator. The reference ruler (4) is fixed onto a connecting rod (3). The technical solution is used to drive the leaf (1) of the multi-leaf collimator in radiotherapy equipment and feed position information of the leaf (1) of the multi-leaf collimator. Thus, the integration of structural functions of mechanical transmission and position detection can be realized, and the narrow installation space requirements and the dual-sensing requirements of Class III medical instruments can be satisfied.
摘要:
Disclosed is an aircraft (100) with a super high aspect ratio based on self-unfolding folding wing technology, the aircraft comprising: an aircraft body (10); a fixed wing (20); and a movable wing assembly comprising a first movable wing (31) and a second movable wing (32), wherein when the aircraft takes off, the first movable wing (31) and the second movable wing (32) are in a folded position. During flight, the first movable wing (31) and the second movable wing (32) are moved to an unfolded position by the aerodynamic force and moment generated by means of the deflection of aerodynamic control surfaces (314) thereof and the differential thrust and moment generated by a distributed propulsion system. When landing is required at the end of cruising, the first movable wing (31) and the second movable wing (32) are deflected and moved to the folded position by means of the aerodynamic force and moment generated by the deflection of the aerodynamic control surfaces (314) thereof and the differential thrust and moment deflection generated by the distributed propulsion system.
摘要:
Provided are a vehicle body (10000) and a vehicle. The vehicle body includes: two A pillars (100); a front impact beam (200); two front longitudinal beams (300) having front ends connected to the front impact beam (200), and each of the front longitudinal beams (300) being connected to the A-pillar (100) at the same side therewith by means of a plurality of force transmission paths; a dash panel (400) having lower portion provided with a dash centre aisle (401) and connected to the two A-pillars (100); an dash upper cross member (402) provided at an upper portion of the dash panel (400); a dash lower vertical member (403) having an upper end connected to the dash upper cross member (402) and a lower end extending to the dash centre aisle (401); and two front floor longitudinal beams (500), each of the front floor longitudinal beams (500) having a front end connected to a rear end of the front longitudinal beam (300) at same side therewith and having a linear configuration. The arrangement of the plurality of force transmission paths enables an applied force to be absorbed and resolved quickly and efficiently, thereby effectively dispersing an impact force that is transmitted backwards.
摘要:
Additive manufacturing apparatus utilizing combined electron beam selective melting and electron beam butting. The additive manufacturing apparatus comprises an electron beam emitting, focusing, and scanning device (6) capable of emitting electron beams (67, 68) for use in a heating mode, a selective melting mode, or an electron beam cutting mode. In the heating mode, the electron beam emitting, focusing, and scanning device (6) emits an electron beam to scan and preheat a powder bed (7). In the selective melting mode, the electron beam emitting, focusing, and scanning device (6) emits the electron beam (67) to scan and melt powder (71) in a cross-sectional outline to form a required component cross-sectional layer. In the electron beam cutting mode, the electron beam emitting, focusing, and scanning device (6) emits the electron beam (68) to perform one or more cutting scans on inner and outer outlines (74, 75) of a component cross-section to obtain accurate and smooth inner and outer outlines of the component cross-section. The electron beam emitting, focusing, and scanning device (6) is further configured to repeat the heating, selective melting, or electron beam cutting processes to obtain a required three-dimensional physical component.
摘要:
An authorization method for a virtual key, a server, an authorization system and device, and a nonvolatile computer storage medium. The method comprises the following steps: receiving an authorization command sent by a first mobile terminal; integrating function authorization codes to form a code set, and sending the code set to a second mobile terminal of an authorized party by means of the first mobile terminal; receiving identity information and the code set sent by the second mobile terminal; and after verification succeeds, generating virtual keys, corresponding to the multiple function authorization codes, of multiple functions of a vehicle, and sending the virtual keys to the second mobile terminal. According to the authorization method, virtual keys, corresponding to multiple function authorization codes, of multiple functions of a vehicle can be generated, so that the controllability and flexibility of the virtual key authorization are improved, targeted key function authorization is achieved, and usage requirements of customers can be better met.
摘要:
The invention relates to a cleaning piston (1) for a mixing head (15) of a reaction molding machine, comprising a main part (3), which has a cylindrical casing region (2), and a clearing part (4), the material and geometry of which are designed to remove residual material adhering to a channel (5) of the mixing head. The clearing part at least partly consists of a non-polar material. The invention additionally relates to a mixing head for a reaction molding machine, said mixing head comprising such a cleaning piston, to a reaction molding machine comprising such a mixing head, and to a discharge pipe (21) for such a mixing head.