41results about How to "Avoid pulling out" patented technology

The invention relates to a photovoltaic junction box connector. A limiting sleeve is supported between a metal electrode and a lock nut to prevent the metal electrode from being pulled out of a connector main body. The limiting sleeve comprises an annular sleeve and an upright axially stretching out of a side wall of the annular sleeve, wherein a reinforcing block radially stretching is arranged at the front end of the upright; and the reinforcing block is embedded into a notch at the rear end of the metal electrode. The limiting sleeve is mounted between the tail of the metal electrode of the connector and a cable sheath straining ring component, the upright pushes against the notch of the metal electrode, and the head of the annular sleeve pushes against the cable sheath straining ring component, so that a metal electrode terminal and the lock nut form overall support by the limiting sleeve of a cable in the connector. A drawing force of the cable for mounting the connector is above 400N.m, so that the drawing force is basically greater than a snap-in force of a cable core and the metal electrode terminal, and cable looseness and extraction caused by limiting can be permanently avoided.

The invention discloses a circuit wiring board with the long service life for power equipment. The circuit wiring board includes a base plate, an insulation shielding cover, a wiring block and a connection block, wherein one side of an upper end of the base plate is equipped with the insulation shielding cover, the base plate is internally equipped with the wiring block, and one side of the wiringblock is equipped with the connection block. The circuit wiring board is advantaged in that the structure is scientific and reasonable, the circuit wiring board is convenient and safe to use, the insulation shielding cover is set, through connection of a rotation shaft and the base plate, the wiring block can be conveniently shielded and protected, and hurt to a user due to exposure of wires in the wiring block is avoided; the wiring block is set, under the action of a bearing rod and a limit groove in the wiring block, leads can be conveniently fixedly connected, shedding of the connection leads from the bearing rod due to side sliding is avoided, and caused poor contact of the connection portion is avoided; the connection block is set, under the action of a moving screw, a fixed half ring, a shrinking groove, a moving extrusion half ring and a bearing column in the connection block, one ends of the connection leads are conveniently fixed, the leads are prevented from being pulled out of the connection block in the device operation process, and stability of the device is improved.

The inventio discloses a geogrid with a negative poisson ratio effect, and a preparation method thereof, and solves the problems of failure in a reinforced earth project and poorer stability of a rib-earth structure since rib materials are easy to pull out in the prior art. According to the geogrid with the negative poisson ratio effect, and the preparation method thereof provided by the invention, the negative poisson ratio effect can be produced, the interaction of the rib materials and fillers is improved, the interlocking of ribs and earth is increased through node expansion, and a pseudo-friction coefficient of a rib-earth interface is increased; and a passive resistance force of grid ribs is increased, so that the stability of a high and large reinforced earth structure is improved.The technical scheme is that the geogrid with the negative poisson ratio effect comprises the grid ribs and node sleeves, wherein each two adjacent grid ribs are spliced to form a net structure through the node sleeve; small nodes are arranged at two ends of each grid rib; the small nodes of each four grid ribs are spliced to form a big node and are fixed through the node sleeve; and under an external load effect, the small nodes slide in the node sleeves , so that the node sleeves are expanded and deformed in a thickness direction, and the negative poisson ratio effect is produced.

The invention discloses a trough body capable of preventing cables from deviating. The trough body comprises a main body, a groove, a bracket group and a telescopic post, wherein clamping part groupsand a bristle area are arranged in the groove; the bracket group comprises two brackets; a limiting groove is arranged in one bracket and the other bracket is hinged with a rotating plate; an accommodating cavity is arranged in the rotating plate; a plurality of second springs are arranged in the accommodating cavity; a slide chute is arranged in the upper surface of the rotating plate; one end ofa telescopic plate movably penetrates through the end surface, far away from a hinged end, of the rotating plate and is connected with the second springs; the telescopic plate is provided with a pokerod; a sleeve is arranged on the lower surface of the rotating plate; a first spring is arranged in the sleeve; one end of the telescopic post is connected with a baffle plate and the other end is provided with an extruding plate assembly; and the extruding plate assembly is provided with friction mechanisms. According to the trough body, an extrusion mechanism can be quickly, flexibly and conveniently assembled and disassembled, the cables can be prevented from moving in the groove through the clamping action, and the cables prevented from being entangled and worn out.

The invention relates to a communication module test method and device, computer equipment and a storage medium. The method comprises the following steps: controlling the output level of a test bottomplate through a serial port, and triggering the level of an SIM card hot plug detection pin of a communication module connected with the test bottom plate to change when the output level changes, sothat the serial port generates SIM card information according to the changed level of the SIM card hot plug detection pin; receiving SIM card information, wherein the SIM card information comprises ahot plug state of the SIM card; and matching the hot plug state of the SIM card with the output level, and obtaining a test result of the communication module according to a matching result. By adopting the method, the hot plug state of the SIM card can be simulated, the SIM card is prevented from being manually inserted and pulled out, the time and energy of a tester are saved, the cost is reduced, the test efficiency is improved, no jitter is generated in the test process, and the stability of a module device is ensured.

The invention relates to a double-effect damage prevention roller treatment device. Treatment plates provided with spring rods are arranged on the side wall of a roller, and springs of the treatment plates can be compressed, so that gaps between the treatment side wall on the periphery of the roller and roller teeth are larger; a plurality of groove holes are formed in the treatment roller, the roller teeth are embedded in the groove holes, and the springs and sleeves are arranged on the lower portions of the roller teeth; and the roller teeth can retract into the groove holes when bearing thelarge external force action, accordingly damage of the roller teeth due to overlarge external force is avoided, and thus the roller teeth can be preserved. After chunks of materials or materials beyond the treatment capacity of the roller are discharged from the roller, the springs push the roller teeth out of the groove holes again, the tooth top faces of the roller teeth are higher than the outer edges of the groove holes, and treatment work conforming to the treatment capacity of the roller is conducted. In addition, the springs with different maximum elastic force can be further replacedaccording to the different treatment materials, so that the adaptability of the roller is further improved.

The invention relates to the related technical field of tests, and discloses a high-moisture-content soil vibration triaxial test sample preparation method and a sample preparation device. The high-moisture-content soil vibration triaxial test sample preparation device comprises a fixed base, a movable base matched with the fixed base is movably installed on one side of the surface of the fixed base, and locking rods are movably installed on the two sides of the fixed base correspondingly; pins are movably connected to the two sides of the top end of the fixed base correspondingly, the movable base is fixedly connected with the fixed base through the pins, a three-section mold is movably installed on the inner wall of the movable base, a top base is movably installed at the top end of the three-section mold, driving handles are movably installed on the two sides of the top base, and a compactor is movably installed at the top end of the top base. The movable base and the fixed base are convenient to disassemble through the pins, so that the movable base and the fixed base can be disassembled from the characteristic of high-water-content soil, layered sample compaction is finally achieved, and the problems that a soft sample is difficult to prepare and difficult to completely take out are solved.

The invention discloses a high lie-on-the-side position supporting device of a patient. The supporting device comprises a supporting plate, an upper base and a lower base, the upper and lower bases can be detachably fixed to the supporting plate and are characterized in that an upper body cavity is formed in the upper base, a lower body cavity is formed in the lower base, the upper body cavity isprovided with arm cavities, the arm cavities are communicated with the upper body cavity, the complete body of patient lying on the side is cooperatively accommodated by the upper body cavity, the lower body cavity and the arm cavities, arm fastening belts are arranged at the arm cavities, and supporting soft cushions are placed in the upper and lower body cavities. The supporting device has the advantages that high lie-on-the-side position mechanical ventilation treatment is helped to be conducted on severe acute respiratory distress syndrome, the risk of being hurt by the pressing by lying on the side for a long term of the patient is reduced, and the patient is located at a high lie-on-the-side position, so that the draining of sputum in the lung is more thorough to help the treatment and rehabilitation of the severe acute respiratory distress syndrome.

The invention relates to an anti-damage roller treating device. A treating roller is provided with a plurality of groove holes; roller teeth are buried in the groove holes; the lower portions of the roller teeth are provided with springs and sleeves; and when the effect of large external force is applied to the roller teeth, the roller teeth can retract into the groove holes, and therefore it is avoided that because the external force is too large, the roller teeth are damaged, and the roller teeth are protected against damage. When a large material or a material exceeding the treating capacity of the roller is discharged out of the roller, the roller teeth are ejected out of the groove holes by the springs again, the tooth top faces of the roller teeth are made to be higher than the outeredges of the groove holes, and the treating work conforming to the treating capacity of the roller is performed. Besides, springs with different maximum elastic force can be replaced according to different treated materials, and the adaptability of the roller is made further improved.

The invention discloses an engineering cost measuring ruler for field measurement, and belongs to the field of engineering cost equipment.The engineering cost measuring ruler for field measurement comprises a shell, a communicated rope outlet is fixedly formed in the outer end wall of the shell, and a wrapping post is rotationally connected to the interior of the shell; a round rope is wound on the outer side of the wrapping post, two vertically symmetrical wheel discs are rotationally connected into the rope outlet, length measurement is conducted by stretching the round rope, the total length of the adjacent bent faces on the construction site can be directly measured by means of the flexibility of the round rope, measurement operation is more convenient and faster, meanwhile, the positioning rod is connected with the round rope, and the measurement accuracy is improved. The circle drawing operation can be carried out by taking the round rope as a reference point and taking the extending length of the round rope as the radius, and an additional compass drawing device does not need to be arranged, so that the applicability of the device in a project cost measuring field is improved to a certain extent.

The invention discloses a refrigerator with an improved air return cover mounting structure. The refrigerator comprises a refrigerator body, the refrigerator body comprises a bottom inner container and an air return cover, a cooling chamber and a storage space are defined in the bottom inner container, the cooling chamber is arranged below the storage space, the air return cover is arranged on the front portion of the cooling chamber, at least one front air return opening communicating with the cooling chamber and the storage space is formed in the air return cover, and side edge clamping structures are arranged on the two sides of the air return cover correspondingly, so that the air return cover can be detachably connected with the supporting walls on the two sides of the air return cover through the side edge clamping structures. According to the invention, the side edge clamping structures are arranged on the side walls of the air return cover and can limit the front and back positions of the air return cover and the bottom inner container, the situation that a user can easily pull out the air return cover is further avoided, the stability of the air return cover is improved, and the refrigerator is simple in structure, high in practicability and easy to use and popularize.

The invention belongs to the technical field of friction materials, and particularly relates to a high-strength wear-resistant friction material and a preparation method thereof.The high-strength wear-resistant friction material comprises 8-12 parts of basalt fibers, 0.5-2 parts of graphene microcapsules, 10-16 parts of graphite, 25-35 parts of composite fibers, 2-3 parts of butyronitrile rubber powder, 5-6 parts of phenolic resin, 16 parts of barium sulfate, 4 parts of iron sulfide, 4 parts of magnesium oxide, 3 parts of aluminum oxide and 5 parts of chromite. According to the multi-component composite material with the basalt fibers and other fibers as reinforcing fibers and the graphene microcapsules as filler, the preparation method solves the problems that the basalt fibers are prone to agglomeration and uneven in dispersion, and large defects of a friction surface of a product due to fiber pulling out are avoided; meanwhile, graphene is wrapped in microcapsules and added into the friction material, and the problems that graphene is not prone to being evenly dispersed, and the bonding strength between graphene and a resin interface is low are solved.

A health management device suitable for hyperglycemia patients provided by the present invention comprises a glucometer body, one side of the glucometer body is provided with a clamping groove, the top of the clamping groove is communicated with a mounting groove, the mounting groove is internally and rotatably connected with a rotating rod through a first mounting seat, the outer surface of the rotating rod is sleeved with a sliding block, and the front surface of the sliding block is rotatably connected with a connecting rod. One end of the rotating rod is rotationally connected with a driving roller and a first transmission wheel through a rotating shaft, and a driving device and a tensioning device are arranged in the mounting groove. According to the health management device, the end is pressed to drive the rotating rod and the driving roller on the rotating rod to rotate anticlockwise, so that the driving roller leaves the clamping groove, one end of the test paper is conveniently inserted into the clamping groove, the end is loosened, the driving roller is pressed on the surface of the test paper, and the test paper is prevented from being accidentally separated from the clamping groove; the test paper can enter the clamping groove and be separated from the clamping groove, manual insertion and extraction of the test paper are avoided, operation is easy and convenient, and cross infection caused by contact between an operator and blood on the test paper can be avoided.

The invention discloses a three-proofing window with high safety. The three-proofing window comprises a window frame, a screen window and a window sash, wherein a first step frame, a second step frame and a third step frame are sequentially arranged on the front side of the window frame from inside to outside, a square-frame-shaped fixing groove is further formed in the portion, on the inner side of the first step frame, of the window frame, the rear side wall of the screen window is provided with a first square-frame-shaped boss matched with the square-frame-shaped fixing groove, the first square-frame-shaped boss is embedded in the square-frame-shaped fixing groove so that the screen window and the window frame can be fixedly connected together, the front side wall of the screen window is provided with a screen fixing mechanism, a second square-frame-shaped boss matched with the second step frame is arranged on the rear side wall of the window sash, the window sash is installed in the third step frame through a hinge, and the second square-frame-shaped boss is arranged in the second step frame. According to the three-proofing window, the installation strength of the screen window can be improved, the edge of the screen window is prevented from being pulled out by external force, and the safety of the three-proofing window is effectively improved.

The invention discloses a chain type manual sewing machine, comprising a mounting rack and a machine head positioned on the mounting rack, wherein the machine head is provided with a stitching mechanism; the stitching mechanism comprises a threading needle and a crochet hook which are arranged side by side; a gap is reserved between the threading needle and the crochet hook; a crochet hook deviceused for cooperating with the stitching mechanism for hooking threads and a thread cutting device for cutting wool are arranged under the mounting rack; the thread cutting device comprises a thread cutting cylinder and a thread cutting piece which is driven to move by means of the thread cutting cylinder. After threading needle of the stitching mechanism carries the wool and passes through cloth,a thread is hooked out by means of the crochet hook after being hooked into a ring shape by means of a thread hooking device; the steps are performed when the cloth is continuously moved, so that thethreading needle just passes through the wool ring hooked by the crochet hook when passing through the cloth downwards, and a chain type stitched edge is further formed. When the thread needs to be cut, the stitching mechanism is stopped when passing through the cloth and the wool ring formed by thread hooking of the thread hooking device; since the wool is not jointed with the stitching mechanism, the thread cutting cylinder drives the thread cutting piece to move, and a thread cutting action is further completed.

The embodiment of the invention provides an electrode needle and an electrode device. The electrode needle comprises a shell, a needle core and a needle tube, wherein at least part of the needle core is arranged in the shell, a sealing structure is formed at the first end, located in the shell, of the needle core, and the sealing structure is slidably connected with the inner wall of the shell; the shell comprises a first fluid interface and a second fluid interface; and the first fluid interface and the second fluid interface are located on the two sides of the moving range of the sealing structure in the axial direction of the needle core correspondingly and used for adjusting the fluid pressure difference of the two sides of the sealing structure in the axial direction by inputting or outputting fluid and driving the sealing structure to drive the second end of the needle core to move relative to the shell and the needle tube in the axial direction. According to the embodiment of the invention, by adjusting the pressure difference of the fluid on the two sides of the sealing structure, the needle core is driven in the axial direction, the moving position is accurately controlled, and then the discharge size of the electrode needle can be adjusted and controlled.