Abstract: A lens module mounted on rigid-flex printed circuit board (PCB) includes a rigid-flex PCB unit having two rigid PCBs and a flex PCB connected to between the two rigid PCBs, and an image sensor and a lens mounted on the flex PCB. A clearance is formed between the lens and the two rigid PCBs, and is filled with clearance glue. The clearance glue reinforces joints of the flex PCB and the two rigid PCBs, and the lens module becomes an integral structure after the clearance glue is cured.

Abstract: A lens module mounted on rigid-flex printed circuit board (PCB) includes a rigid-flex PCB unit having two rigid PCBs and a flex PCB connected to between the two rigid PCBs, and an image sensor and a lens mounted on the flex PCB. A clearance is formed between the lens and the two rigid PCBs, and is filled with clearance glue. The clearance glue reinforces joints of the flex PCB and the two rigid PCBs, and the lens module becomes an integral structure after the clearance glue is cured.

Abstract: A dual-conductor based electromechanical energy conversion system. The system includes an external force device, a moving object connecting frame, a moving object, a dual-conductor assembly and a platform connecting frame. The external force device is connected with the moving object through the moving object connecting frame. The dual-conductor assembly is arranged under the moving object in parallel. The dual-conductor assembly is connected with an external platform through the platform connecting frame. The moving object generates a relative motion with the dual-conductor assembly according to an external force. The dual-conductor assembly generates an alternating current according to an alternating magnetic field generated by the moving object.

Abstract: Disclosed are a shallow-buried leakage-proof pipeline and a method for operating the same. The leakage-proof pipeline includes a programmable logic controller (PLC), an outer pipe, an inner pipe, a first water-pressure sensor, a second water-pressure sensor, an electromagnetic valve, and a movable water leakage detection device. The PLC is arranged on the ground. The outer pipe and the inner pipe are both shallowly buried along a horizontal direction, and the inner pipe is coaxially arranged in the outer pipe. The first water-pressure sensor and the electromagnetic valve are both arranged at a water inlet of the inner pipe, and the second water-pressure sensor is arranged at a water outlet of the inner pipe. The movable water leakage detection device is arranged at a bottom of the outer pipe.

Abstract: The invention relates to an environment-friendly friction material, which consists of the following components in parts by weight: 8-15 parts of a binding material, 3-8 parts of an organic fiber, 3-8 parts of an inorganic fiber, 3-8 parts of an anti-friction material, 15-25 parts of granite powder, 35-40 parts of marble powder, 6-10 parts of a modified organic filling material, 5-10 parts of an acidity or alkalinity regulating material, and 0.5-4.5 parts of a non-copper metal material, wherein the modified organic filling material consists of the following components in parts by weight: 25-50 parts of tyre powder, 15-25 parts of a shoe sole waste, 10-15 parts of a sepiolite fiber, 2-3 parts of a silane coupling agent, 2-5 parts of a cashew nut shell liquid, and 0.5-2 parts of an activator, with the shoe sole waste including 15-30% of POE and 5-15% of EPDM.

Abstract: An anchor rod includes a sleeve open at one end and having a blocking plate at the other end; a pressure relief pipe fixedly arranged on an inner wall of the sleeve; and a rod body. A guide hole is formed in a center of the blocking plate. A part of the rod body penetrates through the guide hole and extends into the sleeve. A gap is formed between the pressure relief pipe and the blocking plate. An overflow valve is connected to the pressure relief pipe. A piston in sliding seal fit with the sleeve and the pressure relief pipe is arranged at the rod body. A sealing ring in sliding seal fit with the rod body is arranged at the inner wall of the guide hole; and a sealing cavity between the blocking plate and the piston in the sleeve is filled with emulsion.

Abstract: The present invention discloses a liquid injection type reamer bit, which comprises a drilling and reaming rod (1), a drilling tool (2) and reaming tools (3). The reamer bit is adopted to perform drilling and reaming operations respectively in a water pressure adjusting manner, has the advantages of simple structure, convenient operation, small volume, light weight, flexible and reliable technology, unified power sources for drilling and reaming, stable reaming, easy recovery of tools, and realization of reaming while drilling, greatly improves the anchoring reliability of anchor bolts, and ensures the safety of workers during underground work.

Abstract: An anchor rod includes a sleeve open at one end and having a blocking plate at the other end; a pressure relief pipe fixedly arranged on an inner wall of the sleeve; and a rod body. A guide hole is formed in a center of the blocking plate. A part of the rod body penetrates through the guide hole and extends into the sleeve. A gap is formed between the pressure relief pipe and the blocking plate. An overflow valve is connected to the pressure relief pipe. A piston in sliding seal fit with the sleeve and the pressure relief pipe is arranged at the rod body. A sealing ring in sliding seal fit with the rod body is arranged at the inner wall of the guide hole; and a sealing cavity between the blocking plate and the piston in the sleeve is filled with emulsion.

Abstract: The present invention discloses a dual-conductor based electromechanical energy conversion system. The system includes an external force device, a moving object connecting frame, a moving object, a dual-conductor assembly and a platform connecting frame; the external force device is connected with the moving object through the moving object connecting frame; the dual-conductor assembly is arranged under the moving object in parallel; the dual-conductor assembly is connected with an external platform through the platform connecting frame; and the moving object generates a relative motion with the dual-conductor assembly according to an external force, and the dual-conductor assembly generates an alternating current according to an alternating magnetic field generated by the moving object.

Abstract: The present invention discloses a liquid injection type reamer bit, which comprises a drilling and reaming rod (1), a drilling tool (2) and reaming tools (3). The reamer bit is adopted to perform drilling and reaming operations respectively in a water pressure adjusting manner, has the advantages of simple structure, convenient operation, small volume, light weight, flexible and reliable technology, unified power sources for drilling and reaming, stable reaming, easy recovery of tools, and realization of reaming while drilling, greatly improves the anchoring reliability of anchor bolts, and ensures the safety of workers during underground work.

Abstract: Disclosed is an internal reamer for anchor shaft hole for mining, comprising a reaming cutter, a sleeve, a push-pull rod, a drilling machine connecting shaft and a manual hydraulic jack, wherein the push-pull rod is disposed in the sleeve coaxially, a rear end of the reaming cutter is connected to a front end of the push-pull rod, a rear end of the sleeve is connected with a guiding cylinder having an inner diameter larger than the sleeve, a rear end of the guiding cylinder is connected with a mounting cylinder coaxially, the manual hydraulic jack is installed in the mounting cylinder, a rear end of the push-pull rod is fixedly connected with a piston plate which is slidingly and sealingly matched with an inner wall of the guiding cylinder, and the front end of the drilling machine connecting shaft is fixedly connected with the rear end of the mounting cylinder.

Abstract: Disclosed is an internal reamer for anchor shaft hole for mining, comprising a reaming cutter, a sleeve, a push-pull rod, a drilling machine connecting shaft and a manual hydraulic jack, wherein the push-pull rod is disposed in the sleeve coaxially, a rear end of the reaming cutter is connected to a front end of the push-pull rod, a rear end of the sleeve is connected with a guiding cylinder having an inner diameter larger than the sleeve, a rear end of the guiding cylinder is connected with a mounting cylinder coaxially, the manual hydraulic jack is installed in the mounting cylinder, a rear end of the push-pull rod is fixedly connected with a piston plate which is slidingly and sealingly matched with an inner wall of the guiding cylinder, and the front end of the drilling machine connecting shaft is fixedly connected with the rear end of the mounting cylinder.

Abstract: Disclosed in the present invention is a preparation method of azoxystrobin having a structure as shown by formula (1), the method comprising: a) performing an etherification reaction by reacting the compound having a structure shown by formula (2) with 2-cyanophenol and/or a salt thereof under the catalysis of an azabicyclo tertiary amine compound and/or a salt thereof as the catalyst in a butyl acetate medium to obtain a butyl acetate solution containing azoxystrobin; and b) cooling the butyl acetate solution containing azoxystrobin to precipitate Azoxystrobin having a structure as shown by formula (1) from the butyl acetate solution. Using the method provided by the present invention to prepare azoxystrobin can significantly improve the yield of azoxystrobin, and can obtain azoxystrobin products having high purity.

Abstract: The present invention relates to a method for preparing an acrylate compound. The acrylate compound has a structure as shown in formula (I). The method includes: subjecting a compound with a structure of formula (II) or a mixture of compounds with structures of formula (I) and formula (II), and a catalyst to a contact reaction in the absence of an anhydride, and removing the resulting methanol by pressure reduced distillation during the contact reaction process. In the formulas (I) and (II), R is selected from one of: an alkoxy with a carbon number of 1-5, a substituent-containing phenoxyl with a carbon number of 6-20, a substituent-containing heteroaryloxy with a carbon number of 4-20, a substituent-containing heteroaryloxymethyl with a carbon number of 4-20, a substituent-containing phenoxymethyl with a carbon number of 5-20, and a substituent-containing alkyl with a carbon number of 2-20.

Abstract: The present invention relates to a method for preparing an acrylate compound. The acrylate compound has a structure as shown in formula (I). The method includes: subjecting a compound with a structure of formula (II) or a mixture of compounds with structures of formula (I) and formula (II), and a catalyst to a contact reaction in the absence of an anhydride, and removing the resulting methanol by pressure reduced distillation during the contact reaction process. In the formulas (I) and (II), R is selected from one of: an alkoxy with a carbon number of 1-5, a substituent-containing phenoxyl with a carbon number of 6-20, a substituent-containing heteroaryloxy with a carbon number of 4-20, a substituent-containing heteroaryloxymethyl with a carbon number of 4-20, a substituent-containing phenoxymethyl with a carbon number of 5-20, and a substituent-containing alkyl with a carbon number of 2-20.

Abstract: Disclosed in the present invention is a preparation method of azoxystrobin having a structure as shown by formula (1), the method comprising: a) performing an etherification reaction by reacting the compound having a structure shown by formula (2) with 2-cyanophenol and/or a salt thereof under the catalysis of an azabicyclo tertiary amine compound and/or a salt thereof as the catalyst in a butyl acetate medium to obtain a butyl acetate solution containing azoxystrobin; and b) cooling the butyl acetate solution containing azoxystrobin to precipitate Azoxystrobin having a structure as shown by formula (1) from the butyl acetate solution. Using the method provided by the present invention to prepare azoxystrobin can significantly improve the yield of azoxystrobin, and can obtain azoxystrobin products having high purity.

Abstract: A backlight module for providing a light with more uniform light distribution and greater brightness is provided. The backlight module includes at least a luminary for providing a light, a light guide assembly disposed adjacent to the luminary for guiding a first portion of the light, a translucent membrane with a plurality of openings thereon, and a reflector disposed below the light guide assembly. In which, a second portion of the light passes upwardly through the openings and a third portion of the light is directed upwardly by the light guide assembly after being reflected by the translucent membrane and the reflector. Further, the light guide assembly includes a plurality of light guide plates, in which the bottom of at least one light guide plate can be a triangular concave or an arc concave, and the light guide plates can have some doping particles therein.

Abstract: The planar light emitting mechanism comprises a rectangular light guiding plate and a lamp. The lamp is disposed on a side of the light guiding plate, having a brighter effective emitting area and two curved darker emitting areas. The darker emitting areas are adjacent to the corners of the rectangular light guiding plate, wherein the brighter effective emitting area is between the darker emitting areas.

Abstract: A back light module disposed under a display panel has at least a light source generator for generating light beams, a diffusing plate for scattering the light beams to the display panel, a light guide plate for scattering the light beams to the diffusing plate, at least a light shading sheet with a plurality of light holes, and a reflecting sheet for scattering the light beams to the light guide plate.

Abstract: A back light module disposed under a display panel has at least a light source generator for generating light beams, a diffusing plate for scattering the light beams to the display panel, a light guide plate for scattering the light beams to the diffusing plate, at least a light shading sheet with a plurality of light holes, and a reflecting sheet for scattering the light beams to the light guide plate.