76results about How to "Reduce extrusion deformation" patented technology

The invention provides an explosive test device of combustible gas with the concentration gradient and a using method. The using method comprises the steps that vacuumizing is conducted till the interior of an explosive reaction container is at the vacuum state; negative pressure is matched with the gradient concentration, specifically, the combustible gas with the different concentrations is allocated in an upper reaction container and a lower reaction container, the pressure balance between the upper reaction container and the lower reaction container is always maintained in the gas injection process by controlling the flux speed electrically; an ignition test is conducted, specifically, an air cylinder is pulled out from a separation plate port, so that the upper reaction container andthe lower reaction container are communicated with each other, meanwhile, the ignition test is started, in the ignition process, a high-speed photography and schlieren measuring system analyzes the parameters such as the maximum explosive pressure, the maximum pressure rise speed, the explosive wave transmission rate, the flow field morphology, the flame evolution and the like to do research on the explosive transmission mechanism of the combustible gas with the concentration gradient and analyzes the evolution dynamics process of explosive. The explosive test device has the effects of being used for doing research on the explosive evolution dynamics process and explosive wave transmission mechanism of the combustible gas with the concentration gradient.

The invention provides silica gel diaphragm and a loudspeaker. The silica gel diaphragm has a rectangular folding ring part and a middle adhering part connected with the inner periphery of the foldingring part. The folding ring part is composed of two first folding ring sides which are set oppositely and two second folding ring sides which are set oppositely. A folding ring corner is connected between the adjacent first folding ring side and second folding ring side. Each folding ring corner is equipped with at least one thickness adjustment section. First thickness difference exists among the thickness of the first folding ring sides, the thickness of the second folding ring sides and the thickness of the thickness adjustment sections. According to the silica gel diaphragm and the loudspeaker provided by the invention, the stress at four corners of the silica gel diaphragm is reduced by changing the thickness of the thickness adjustment sections of the folding ring corners of the silica gel diaphragm, so the resonant frequency is reduced and the roll vibration is suppressed.

The invention relates to an optical fiber coupling connector for coupling and connecting an optical fiber. The optical fiber coupling connector comprises a body and at least one optical lens, wherein the body is provided with a first end surface and a second end surface which are opposite; the first end surface is provided with at least one optical fiber guiding hole to oppositely accommodate at least one optical fiber; at least one optical lens is arranged on the second end surface; the second surface of the body is provided with at least one inserting groove and at least one buffer groove arranged between the inserting groove and the optical lens. According to the optical fiber coupling connector provided by the invention, the buffer groove is arranged between the inserting groove and the optical lens, the compression deformation of a substrate of the inserting groove can be buffered effectively, and the deviation of the position of the optical lens can be avoided, thus the signal transmission performance of the optical fiber coupling connector is guaranteed effectively.

The invention provides a comprehensive tunnel drainage, precipitation and pressure reduction construction method, relates to an in-tunnel drainage, ground precipitation and comprehensive pressure reduction construction method for a water and mud burst segment of a tertiary system sand shale tunnel and is mainly designed to solve the problems that an existing tunnel is prone to deformation, collapse and even water burst and mud burst in the tertiary system sand shale construction process. Ground precipitation wells are drilled at the positions, eight meters away from the side lines on the two sides, of a ground-direction positive hole, a flat guide hole is formed near the ground-direction positive hole, a drainage hole is formed in the inclined upper direction of the ground-direction positive hole relative to the flat guide hole, tunnel substrate precipitation wells are drilled in both the substrate of the ground-direction positive hole and the substrate of the flat guide hole, a plurality of inclined drainage holes are formed above the inclined front portion of a vault of the ground-direction positive hole, a positive hole vertical drainage hole is formed above the vault of the ground-direction positive hole, and a flat guide hole vertical drainage hole is further formed above the vault of the flat guide hole. The comprehensive tunnel drainage, precipitation and pressure reduction construction method has the advantages that geological disasters such as collapse, deformation, water burst and mud burst are avoided, and tunnel construction safety can be guaranteed.

The invention relates to an automatic cable metering and code-spraying production line, which comprises a rack, and is characterized in that the rack is provided with a wire guide device and a code sprayer, and the wire guide device comprises a substrate, a guide mechanism and a traction mechanism; and the traction mechanism comprises two lifting plates connected to the base plate in an up-down sliding mode, two traction wheels fixed to the corresponding lifting plates correspondingly and a first driving assembly driving the lifting plates to get close to or get away from each other, and second driving assemblies driving the traction wheels to rotate are arranged on the lifting plates. The guide mechanism comprises a horizontal frame fixed to the base plate, at least two horizontal carrying plates connected to the horizontal frame in a sliding mode, two vertical rollers which are parallel to each other and fixed to the horizontal carrying plates respectively and at least one transverseroller located on the sides, away from the traction wheels, of the vertical rollers, and the horizontal carrying plates are synchronously driven by a first driving assembly. The automatic cable metering and code-spraying production line has the advantages that cables of different specifications can be accurately guided and dragged, and meanwhile extrusion deformation of the cables can be effectively reduced.

An ultra-high frequency digital communication cable, comprising a cable core, a total shielding layer (6), an outer protection layer (7) and branch shielding layers (4) on twisted pair wire groups (3), wherein overlapping sides of the branch shielding layers (4) are clamped between two adjacent insulated single wires to form a branch shielding overlapping wire (8); the branch shielding overlapping wires (8) corresponding to two adjacent pairs of twisted pair wire groups (3) are arranged in a staggered manner; and the length for overlapping, outward-stretching sides of the branch shielding layers (4) to extend outwards from the branch shielding overlapping wires (8) is L1, L1 being 10%-15% of the width of a clad foil band of the branch shielding layers (4). The preparation method comprises the following steps: (1), drawing a copper conductor (1); (2), extruding an insulation layer; (3), twisting twisted pair wire groups (3); (4), cladding branch shielding layers (4); (5), twisting same into a cable; (6), weaving a total shielding layer (6); and (7), extruding an outer protection layer (7) into a finished cable. The communication cable not only has a good shielding effect and can effectively prevent intrusion and leakage of an electromagnetic wave, but also has a firm cable structure and stable transmission performance, and is particularly applicable to transmitting an ultra-high frequency band digital signal.

The invention belongs to the technical field of communication base stations, and particularly relates to a communication base station. The communication base station comprises an upright rod, a plurality of supporting rods are fixedly arranged at the top of the upright rod in the peripheral direction, and supporting columns are hinged into swing grooves through threaded hinge columns. Base stationantennae are installed at the ends of the supporting columns, the base station antennae are arranged in the peripheral direction of the upright rod through the supporting columns, the upright rod issleeved with a rubber annular sleeve, and the outer portion of the rubber annular sleeve is wrapped with a cavity supporting sleeve. The cavity supporting sleeve is formed by splicing elastic rubber plates; a plurality of limiting springs are uniformly arranged between the cavity supporting sleeve and the rubber annular sleeve. The phenomenon that when the antennae swing in a strong wind environment, the base station antennae are blown by wind power to hit against one another or the base station antennae impact on the upright rod, the base station antennae are damaged due to impact is prevented so that the base station antennae can stably send and receive signals. It is achieved that birds are effectively expelled for a long time, labor is saved, and the service life is prolonged.

The invention relates to the technical field of deep well corpse fishing and further discloses a protective fishing device and method for deep well corpse fishing. The device comprises a steel wire rope fixing body and an orientation stabilizer, wherein a bottom of the steel wire rope fixing body is welded to an upper surface of the orientation stabilizer, a connecting body is welded at the bottomof the orientation stabilizer, an arc-shaped positioning side protection body is welded at the bottom of the connecting body, the arc-shaped positioning side protection body is movably connected withone side of a positioning sealing mechanism through a rotating shaft, the positioning sealing mechanism is provided with a lower baffle through a conduction mechanism, and a box body is welded on theother side of the positioning sealing mechanism. The device is advantaged in that the characteristic that a corpse is easy to damage, the effect that the corpse collides with the interior of the wellbody to be damaged can be effectively reduced, the bottom of a box body is sealed, so the effect of corpse position space conversion can be achieved, the corpse fishing protection effect is greatly improved, a memory protection body can better protect the placed corpse, and extrusion deformation of the corpse due to influence of gravity during corpse fishing is effectively reduced.

The invention relates to the technical field of home equipment, and discloses a folding-type storage luggage. The folding-type storage luggage comprises a basic part; a folding part is arranged at theupper end of the basic part, and the upper end and the lower end of the folding part are movably connected through a folding zipper; and a bottom plate is assembled at the lower end of the basic part, and one side of the bottom plate is movably connected with a folding plate. According to the folding-type storage luggage, a supporting plate and a supporting rod are assembled in the folding part to support the folded part of the folding-type storage luggage to prevent the exterior of the luggage from deforming, the probability of occurrence of extrusion deformation of objects in the luggage isdecreased, meanwhile the inclining risk of the luggage is reduced, secondly force bearing during moving of the luggage is more reasonable, and thus the service life of a push-pull rod is prolonged; and moreover, the folding plate can be used for storing other objects after being unfolded, the volume of the luggage is increased, the using efficiency of the luggage is improved, meanwhile the overall gravity center of the luggage is lowered by placing the other objects on the folding plate, and thus the stability of the luggage during moving is further improved.

The invention discloses a dynamic bottle blocking device in a bottle conveying mechanism in a box filling machine. The dynamic bottle blocking device comprises a bottle blocking support arranged on arack, wherein a plurality of bottle blocking assemblies are arranged on the bottle blocking support, and each bottle blocking assembly is correspondingly blocked in one conveying channel; the bottle blocking support is connected with the rack in a sliding mode, a driving mechanism is arranged on the rack, the bottle blocking support can be driven by the driving mechanism to slide back and forth onthe rack, and therefore each bottle blocking assembly is driven to move back and forth in the corresponding conveying channel; and a first position sensor, a second position sensor and a third position sensor are arranged on the bottle blocking support at intervals, bottles closest to the bottle blocking assemblies in the conveying channels can be detected by the first position sensor, the secondposition sensor and the third position sensor in sequence in the process of moving towards the bottle blocking assemblies until the bottles are blocked in place. The dynamic bottle blocking device inthe bottle conveying mechanism in the box filling machine has the advantages that bottle deformation is greatly reduced, and therefore the bottle grabbing accuracy is improved.

The invention provides a width-limiting device for construction of small road sections used in traffic engineering, which includes rollers, shock absorbers, square pipe sleeves, guide wheels and tight release rods; the peripheral outer wall of the semicircular water tank is arranged in a circular array There are four rectangular slots, where two quarters of the height of the four rectangular slots are supported and welded with a positioning plate with a central jack, and each of the four rectangular slots is slidably inserted with a roller support shaft; The upper support sleeve of the lower half of the support tube has two guide wheels arranged at intervals up and down; there is a positioning disc on the outer opening of the tube hole, which is screw-locked, and the position of the positioning disc and the center of the plug is equal. An I-shaped notch is provided; an I-shaped elastic block is provided at the tail end of the tight unloading lever. The setting of the guide wheel of the present invention can prevent the rubber tire on the guide wheel from being damaged when the vehicle accidentally touches the guide wheel. The exterior paint of the vehicle is scratched.

The invention relates to a device for forming a metal carrier. The device comprises a push-turn mechanism which is installed in a rack, an output end of the push-turn mechanism is connected with a needle rolling mechanism, and the push-turn mechanism drives the needle rolling mechanism to perform vertical motion and rotational motion; the needle rolling mechanism is movably connected with a forming mechanism, and the forming mechanism is installed on a work table board of the rack; and an operation platform is installed above the forming mechanism, and a clamping mechanism is installed on the operation platform. The push-turn mechanism, the forming mechanism and the clamping mechanism cooperatively work to finish rolling of the three-core metal carrier, the degree of automation is high in the whole work process, moulding and deformation of materials in the rolling forming process are greatly reduced, and problems of low qualification rates, poor qualities and low efficiencies which are caused by manual forming production of operators in the past are solved, and production efficiencies are improved.

The invention relates to the technical field of valves, and particularly discloses a small improved membrane valve. The small improved membrane valve comprises an upper valve body, a lower valve body and a flexible membrane, wherein the upper valve body and the lower valve body are connected with each other, and the flexible membrane is clamped between the upper valve body and the lower valve body. The upper valve body and the lower valve body are further provided with a valve system. The valve system comprises connectors, air pipelines, fluid cavities and fluid pipelines. The fluid cavities are formed in the lower valve body and communicate with one ends of the corresponding fluid pipelines, and the other ends of the fluid pipelines transversely extend to the outer side wall of the membrane valve. The fluid pipelines are arranged inside the lower valve body and bent in an L shape. Connecting ports corresponding to outlets of the fluid pipelines are arranged in the outer side face of the membrane valve. The inner surface of the upper valve body or the lower valve body is provided with bosses, and the height of the bosses is slightly smaller than the thickness of the flexible membrane in the natural relaxation process. The bosses are arranged at the positions corresponding to the outer sides of the edges of the fluid cavities in a surrounding mode, so that an enclosed space is formed. By the adoption of the membrane valve, the problem of channel blockage caused by elastic film compressional deformation can be better solved, the resistance of liquid flowing past channels is reduced, and the membrane valve performance is improved.

The invention discloses a stator punching sheet structure and a motor comprising the same. The stator punching sheet structure comprises a plurality of stator iron core groups; one stator iron core group is provided with 9-12 stator iron core pieces; a stator bending groove is arranged between every two adjacent stator iron core pieces; each stator bending groove comprises a curved surface A, a curved surface B and a curved surface C, wherein the curved surface A and the curved surface B are each provided with multiple arcs with the same number, and the curved surface C is in an arc shape; after each stator iron core group is bent, the multiple arcs on the curved surface A can coincide with the multiple arcs on the curved surface B; and the multiple stator iron core groups are connected end to end to form stator iron core layers. The motor comprising the stator punching sheet structure comprises a rotor body; and the stator core layers are stacked in sequence to form a stator body; the stator body is wound and then put into a mold so as to be subjected to injection molding; and the rotor body is also put into the mold so as to be subjected to injection molding.

The invention provides a comprehensive tunnel drainage, precipitation and pressure reduction construction method, relates to an in-tunnel drainage, ground precipitation and comprehensive pressure reduction construction method for a water and mud burst segment of a tertiary system sand shale tunnel and is mainly designed to solve the problems that an existing tunnel is prone to deformation, collapse and even water burst and mud burst in the tertiary system sand shale construction process. Ground precipitation wells are drilled at the positions, eight meters away from the side lines on the two sides, of a ground-direction positive hole, a flat guide hole is formed near the ground-direction positive hole, a drainage hole is formed in the inclined upper direction of the ground-direction positive hole relative to the flat guide hole, tunnel substrate precipitation wells are drilled in both the substrate of the ground-direction positive hole and the substrate of the flat guide hole, a plurality of inclined drainage holes are formed above the inclined front portion of a vault of the ground-direction positive hole, a positive hole vertical drainage hole is formed above the vault of the ground-direction positive hole, and a flat guide hole vertical drainage hole is further formed above the vault of the flat guide hole. The comprehensive tunnel drainage, precipitation and pressure reduction construction method has the advantages that geological disasters such as collapse, deformation, water burst and mud burst are avoided, and tunnel construction safety can be guaranteed.