15results about How to "Reduce extension length" patented technology

The invention discloses a loose aquifer grouting simulation test device and method, and the device comprises an aquifer simulation body which is of a cylinder structure formed by stacking a plurality of layers of cylinder cavities; a digital information acquisition system is embedded in the aquifer simulation body; and a slurry supply system is communicated with the inner cavity of the aquifer simulation body. The device is used for the grouting simulation experiment of the loose aquifer under multi-field environment coupling. The device can simulate the grouting conditions of broken rocks and sand clay with different proportions under different drainage modes and grouting parameters, and further analyzes the diffusion mechanism and grouting reinforcement mechanism and effect of the grout in the unconsolidated formation.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, and the sound production device comprises a housing, a magnetic circuit system, a vibration system and a supporting member. The vibrating system comprises a vibrating diaphragm, a framework, a voice coil and a centering disk, the vibrating diaphragm is connected with the shell and the framework, the voice coil is connected with the framework and corresponds to a magnetic gap of the magnetic circuit system, the centering disk is connected with the framework and the shell, the framework comprises a body part and a conductive layer, the centering disk is provided with a conductive part, and the conductive part and a lead part of the voice coil are electrically connected with the conductive layer respectively; the framework is provided with a first magnetic attraction part, the supporting piece is provided with a second magnetic attraction part located on the side, opposite to the magnetic circuit system, of the vibrating diaphragm, first attraction force exists between the first magnetic attraction part and the second magnetic attraction part, second attraction force exists between the first magnetic attraction part and the magnetic circuit system, and in the non-working state, the vibrating system is located at the balance position under the action of the first attraction force and the second attraction force. According to the technical scheme, the low-frequency effect and the acoustic performance of the sound production device can be improved.

The utility model discloses a cantilever type combined retaining wall suitable for a site limited building, which comprises a reinforced concrete building outer wall which is also used as a retaining vertical wall, and an outer wall lower strip-shaped foundation which longitudinally extends along a wall body is arranged below the reinforced concrete building outer wall. Transverse foundation straining beams are arranged between the outer wall lower strip-shaped foundation and the building column lower independent foundations and between the building column lower independent foundations, and a drainage mechanism is arranged in backfill soil on the back side of the reinforced concrete building outer wall. The retaining wall foundation is simple in structure, convenient to construct, low in cost, safe and reliable, the defect that a traditional retaining wall foundation is large in work amount during construction is overcome, the self weight of a building is ingeniously transmitted to the retaining wall lower foundation through the frame columns, the self weight of the whole building is fully utilized to resist lateral pressure of a soil body to the retaining wall, and the retaining wall foundation is convenient to construct. The extension length of the lower strip-shaped foundation of the retaining wall in the soil side direction is effectively reduced, the strength of the retaining wall is improved, and meanwhile drainage safety is considered.

This application provides a three-dimensional memory structure, its fabrication method, and an electronic device. The three-dimensional memory structure includes: a peripheral circuit chip, a memory array, a first word line lead-out structure, and a second word line lead-out structure. The memory array includes multiple array cell layers stacked vertically, each array cell layer including multiple memory cells arranged in an array, each memory cell including a horizontal ring-gate transistor and a capacitor arranged along a second horizontal direction; a stepped region forms a multi-layer stepped structure, the multi-layer stepped structure including a first stepped structure and a second stepped structure stacked vertically; the first stepped structure has multiple levels of first mezzanines, and the second stepped structure has multiple levels of second mezzanines; the multiple levels of first mezzanines and multiple levels of second mezzanines extend sequentially along the first horizontal direction and are opposite to each other; the first word line lead-out structure electrically connects the multiple levels of first mezzanines and the peripheral circuit chip, and the second word line lead-out structure electrically connects the multiple levels of second mezzanines and the peripheral circuit chip.

The present invention provides a motor vehicle body chassis structure, which belongs to the field of rail vehicle technology, and includes a framework assembly and a corrugated bottom plate laid on the framework assembly, wherein the framework assembly includes two end beams, two side beams, two groups of traction beams, two groups of bolsters, a plurality of longitudinally spaced cross beams, and two groups of in-track longitudinal beams, wherein the two groups of in-track longitudinal beams are respectively connected to the two groups of bolsters and extend toward the middle of the framework assembly; each group of in-track longitudinal beams includes two groups of trough beams, which are symmetrical and spaced around the longitudinal center axis of the framework assembly, one end of the trough beam is fixedly connected to the corresponding bolster beam, and the other end extends longitudinally along the framework assembly and spans at least three cross beams; wherein the trough beam has a wing surface that is attached to and fixedly connected to the corrugated bottom plate, and the lateral width of the wing surface gradually increases from the traction beam toward the extended end of the trough beam. The motor vehicle body chassis structure provided by the present invention can reduce the weight of the chassis and save costs.

The utility model relates to a cutterhead and circuit board processing equipment, the cutterhead is configured to be used on the circuit board processing equipment, and comprises a base body, a plurality of bearing parts and a positioning part, and the plurality of bearing parts are arranged on the base body in a matrix mode and are constructed to penetrate through the two opposite ends of the base body in the height direction; the bearing part is provided with a placing hole matched with the cutter; the positioning part is constructed to be at least arranged at the bottom of the base body and is constructed to be used for positioning circuit board processing equipment, and the base body, the bearing parts and the positioning part are constructed to be integrally formed. The cutterhead is simple in overall structure and high in assembly consistency and shape consistency, and cutterhead replacement equipment can transport the cutterhead conveniently and a drilling room can store the cutterhead conveniently. As the base body, the plurality of bearing parts and the positioning part are integrally formed and processed, the processing cost is low, and the structural strength is relatively high.

The utility model discloses a light load type unpowered trailer which comprises a trailer frame and a bearing frame, a first rotary disc is installed on the trailer frame, the bearing frame is installed on the first rotary disc, and a second rotary disc and a front wheel frame installed on the second rotary disc are installed on the trailer frame. A rear wheel is mounted on the frame, and a front wheel is mounted on the front wheel frame; a mop is rotationally installed on the front wheel frame, a pedal mechanism used for stopping the bearing frame from rotating is installed on the frame, the pedal mechanism comprises a pedal, and the extending height of the pedal is aligned with the frame; the bearing frame is installed on the frame through the first rotary disc so that the angle of the bearing frame relative to the frame can be adjusted, the bearing frame needs to be stopped through the pedal mechanism in the transportation process, when adjustment is needed, the pedal mechanism unlocks the bearing frame by treading the pedal, the extending height of the pedal is aligned to the frame, and therefore adjustment is achieved. The height of the pedal is increased, so that friction caused by contact with the ground during treading is avoided, and the extension length of the pedal is shortened, so that collision caused by the outside is avoided.

The invention discloses an electrochemical device and an electronic device. The electrochemical device comprises a pole piece and a pole lug, wherein the pole piece comprises a current collector, a first active material layer and a first insulating layer; the current collector comprises a first part of a first region, a second region and a third region, the first region is provided with a first active material layer, and the second region is provided with a first insulating layer. The orthographic projection of the second region at least partially surrounds the orthographic projection of the first part of the third region in the thickness direction of the current collector, and the first region and the second region are arranged in the length direction of the current collector. According to the pole piece disclosed by the invention, the exposed conductive area is relatively small, so that the safety risk can be reduced, for example, the risk of short circuit is reduced when an electrochemical device is punctured.

The invention relates to a connecting flange for connecting two tubular parts to one another, preferably in an exhaust system of an internal combustion engine, comprising a flange body which surrounds a flange longitudinal axis in an annular manner and which has a first flange contact region and a second flange contact region, the second flange contact region is arranged at a distance from the first flange contact region in the direction of the longitudinal axis of the flange, a first inner circumferential contact surface is arranged in the first flange contact region, and the first inner circumferential contact surface is used for abutting the flange body against the outer circumferential surface of one of the components to be connected to each other by means of the connecting flange. A second inner circumferential contact surface is arranged on the second flange contact region, and the second inner circumferential contact surface is used for contacting the flange body on the outer circumferential surface; in the flange body, between the first inner circumferential contact surface and the second inner circumferential contact surface in the axial direction, an insulating recess which extends radially outward with respect to the first inner circumferential contact surface or / and the second inner circumferential contact surface and is open radially inward is provided.

The utility model relates to the technical field of batteries, and provides a battery device which comprises a battery box, a battery and a first heat exchange assembly, and the battery box comprises a bottom plate; the batteries are arranged on the bottom plate, at least part of the batteries are distributed in the first direction, each battery comprises a bottom face, a top face, a first side face and a second side face, the first side face and the second side face are connected between the bottom face and the top face and intersect, the area of the first side face is smaller than that of the second side face, and the second side faces of every two adjacent batteries are oppositely arranged in the first direction. The first heat exchange assembly comprises a heat exchange plate extending in the first direction, and the heat exchange plate is located on the sides, provided with the first side faces, of the batteries. The plurality of batteries comprise lithium iron phosphate batteries, the extension length of the heat exchange plate in the first direction is L, the thickness of the batteries in the first direction is d, and L / d is 10-100; fractures are formed in the heat exchange plate and used for dividing the heat exchange plate into a plurality of sub heat exchange plates distributed in the first direction. The heat exchange plate can be well attached to the battery.

The connecting gasket comprises a base body, the base body is provided with a pair of clamping parts which are arranged at an included angle of 30 degrees to 70 degrees, the upper ends of the two clamping parts are inclined and folded upwards and then bent in a round chamfering mode to form inner flow guide parts, the ends, away from the clamping parts, of the inner flow guide parts are folded outwards to form bearing parts, and the bearing parts are connected with the clamping parts. One end, far away from the clamping part, of the bearing part is obliquely folded downwards to form an outer flow guide part; the clamping part is arranged on the periphery of the small-diameter steel bar in a clamping mode, and the bearing part abuts against the surface of the lower end of the large-diameter steel bar.

A display device is provided. The display device includes a substrate, a circuit layer, and an element layer. The substrate includes a display area and a non-display area. The display area includes an emission area, a non-emission area, and a light sensing area in a portion of the non-emission area. The element layer includes a light emitting element in the light emitting region and a light sensing element in the light sensing region. The circuit layer includes a light emitting pixel driver, a light sensing pixel driver, data lines, read-out lines extending parallel to the data lines, first dummy lines extending in a first direction, and second dummy lines extending in a second direction and respectively paired with the data lines. The first dummy line includes a first readout bypass line electrically connected to the first readout line. The second dummy line includes a first readout connection line electrically connected to the first readout bypass line.

This invention discloses a rotating metal blade comb structure for a vacuum cleaner floor brush, comprising: a hair cutting mechanism including a metal blade connecting rod and metal blade comb teeth, the metal blade comb teeth and the roller assembly rotating in opposite directions; a hair gripping mechanism, located upstream of the roller assembly relative to the hair cutting mechanism, including a first comb plate and a gripper assembly, a guide assembly, and a linkage assembly arranged sequentially along the surface of the first comb plate towards the roller assembly, the gripper assembly being slidably mounted on the first comb plate, and a pressing block being provided on the linkage assembly towards the guide assembly, the pressing block being associated with the gripper assembly; and a hair adsorption mechanism including a second comb plate and an adsorption element disposed on the second comb plate. This invention can solve the problems of difficult hair removal from common floor brush rollers, where some combing and cutting mechanisms cannot guarantee the efficiency and extent of hair removal during cleaning, and may also damage the brush assembly, affecting the use of the roller brush.

The utility model discloses a robot abduction type carrying clamping finger mechanism of a box body, which comprises a power piece, a clamping finger and a clamping finger, the clamping fingers are assembled with the two ends of the power piece, each clamping finger comprises a vertical plate and a horizontal plate which are integrally fixed in an L shape, the horizontal plates of the clamping fingers located at the two ends of the power piece extend in the opposite directions, and the surfaces of the horizontal plates are provided with inclined cutting faces and outer round corners; each horizontal plate is provided with a pair of inclined cutting surfaces in mirror symmetry, and the inclined cutting surfaces enable the width of the horizontal plate to be gradually narrowed in the extending direction of the horizontal plate; the top face and the side faces of the horizontal plate are in transition through outer fillets, and the outer fillets enable the thickness of the horizontal plate to be gradually reduced from the center of the horizontal plate to the two sides of the horizontal plate. The shape design of the clamping fingers is refined, so that the clamping fingers can be conveniently aligned with a handle hole of a turnover box, and the turnover box is prevented from being cut by edges and corners of the clamping fingers. The clamping finger mechanism is suitable for being used on a robot manipulator, and can take, place and transfer turnover boxes on an automatic assembly line according to requirements.

The utility model relates to the technical field of batteries, in particular to a distribution box. The power distribution box comprises the shell, the electrical element for power distribution and the shell connector, and the shell connector is directly inserted into the gap reserved in the shell, so that a lap joint copper bar from a BDU to a battery pack shell is omitted, the wiring cost is reduced, the copper bar does not occupy the internal space of a battery pack frame any more, and the service life of the battery pack is prolonged. Therefore, the lightweight and miniaturized design of the battery pack is realized.