441results about How to "Guaranteed installation stability" patented technology

The invention discloses an ultra-wearproof epoxy precast slab and an installation method thereof, wherein, material components of the precast slab based on parts by mass are as follows: 30-40 parts of epoxy resin component, 8-15 parts of epoxy hardener, 0-600 parts of aggregate component and 0-60 parts of chopped fiber. According to the invention, the precast slab has the advantages of excellent wear performance and impact resistance, long service life and corrosion resistance.

The invention discloses an automatic slurry filling device for a concrete crack defect with high adhesion strength, which comprises a slurry filling pipe, wherein the concrete slurry is injected intothe concrete crack through the slurry filling pipe; and also comprises a machine frame, an electric sliding element, an electric lifting element, a rubber sleeve, a trowel, a first supporting rod, a first sucking disc, a second supporting rod and a abutted element; the electric sliding element is in sliding fit with the machine frame, the electric lifting element is arranged on the electric sliding element, the lifting end of the electric lifting element is connected with the slurry filling pipe, and the trowel is sleeved at the periphery of the slurry filling pipe through the rubber sleeve. The first sucking disc is arranged on the end part of the first supporting rod; the connecting end of the abutted element is slidably mounted on the end part of the second supporting rod, and the abutted end of the abutted element can be contacted with the trowel. The device has the advantages that the crack can be fully filled, the slurry leakage condition is reduced, the flatness of the surface after filling the slurry is high, the slurry filling pipe can achieve sliding and grouting in the crack, and the installation stability of a bracket is high, no damage is caused on a wall body or the adhesion strength of a plate body is high.

The invention relates to a tool and a method for adjusting the mounting accuracy of a flexible pendulous accelerometer, and belongs to the technical field of mounting of accelerometers. Three independent gaskets are accurately combined to form a whole body, and are uniformly ground, the requirement on the mounting accuracy of the accelerometer is achieved, a plane formed by the three machined adjusting gaskets can be coplanar precisely, a base can be well adhered to a mounting surface after the accelerometer is mounted, and the factor of instability of bias items of the accelerometer due to deformation of the base is effectively prevented. The method is easy to operate and high in adjusting efficiency; and the mounting accuracy and the bias stability of the flexible accelerometer can be simultaneously guaranteed.

The invention discloses a garbage recycling box for municipal gardens, which comprises a recycling box, a lifting cylinder is arranged on the top of the recycling box, and the lifting cylinder is connected with a push plate through a hydraulic telescopic rod, and heat insulation boards are arranged on both sides of the recycling box , and the outer side of the heat shield is welded with a discharge port, the inner bottom of the recovery box is provided with a pressure plate and a limit spring used in conjunction with it, the inner bottom of the recovery box is provided with a pressure sensor, and the recovery box A base plate is provided at the bottom, a vacuum pump is provided inside the base plate, and a suction cup is provided at the bottom of the vacuum pump, a support column is welded at the center of the top of the base plate, and a top plate is welded at the top of the support column, and the two sides of the support column pass through clamping blocks Snap connection with snap post on the recycling bin. In the present invention, the overall structure design of the recovery box is simple and reasonable, has strong recovery and storage capacity, and is convenient for installation and disassembly operations, and has strong practicability.

The invention discloses an integrated GNSS deformation monitoring device. The integrated GNSS deformation monitoring device comprises an observation pillar, a GNSS antenna (11) and a GNSS receiver (6), wherein the observation pillar comprises an observation cylinder body and an observation base (1), and an integrated observation structure is arranged on the top of the observation cylinder body; and the integrated observation structure comprises an installation disc (7) and an antenna cover (10) which together form hemispherical installation space, the GNSS antenna (11) is a disc-shaped activeantenna which is arranged in the right middle of the installation space, a GNSS antenna installation support (9) used for fixing the GNSS antenna (11) is arranged between the GNSS antenna (11) and theinstallation disc (7), the GNSS receiver (6) used for receiving signals from the GNSS antenna (11) is arranged inside the observation cylinder body, and holders which can rotate around the observation cylinder body are arranged on the outer side of the observation cylinder body and are fixedly provided with a rainproof case (5) and a solar cell panel (2). The integrated GNSS deformation monitoring device makes rapid installation and debugging possible, so that installation time and debugging time of the monitoring device are greatly saved.

The invention discloses a suspended ceiling edge closing component and a mounting method. The suspended ceiling edge closing component comprises a hanging piece, a fixing piece and a leveling piece; the hanging piece comprises a bottom plate, a first hanging plate, a second hanging plate and a limiting plate; the bottom plate abuts against a suspended ceiling plate in an attached mode; the limiting plate abuts against the end part of the suspended ceiling plate; hanging parts are arranged on the sides, facing the limiting plate, of the first hanging plate and the second hanging plate; the first hanging plate and the second hanging plate are both inserted into a keel and are fixedly connected; the hanging parts are located outside the end part of the keel; the fixing piece comprises a fixing plate and a damping structure; the fixing plate is attached to the wall face and is fixedly connected with the wall face through the leveling piece; the damping structure is fixedly connected to the lower end of the fixing plate; and the damping structure is provided with third elastic plates corresponding to the hanging parts, so that the hanging piece can be hung on the fixing piece after being fixed to the keel, and a connection bearing structure is formed. The suspended ceiling edge closing component has a good damping effect and is fast to mount; a limiting structure is arranged, so that a tight combination relationship is formed; and the edge closing component can be quickly leveled.

The invention discloses an intelligent telegraph pole with a 5G signal transmission protection structure. The intelligent telegraph pole comprises a telegraph pole body, a butt joint part, a limitingpart, a supporting rod and a movable rack, wherein the butt joint part is installed at the upper end of the telegraph pole body through bolts, a connecting shaft is installed on the outer side of thebutt joint part in a penetrating mode, a supporting frame is fixedly connected to the outer end of the connecting shaft, meanwhile, the supporting frame is connected with the outer side of the butt joint part, a first torsional spring is fixedly connected to the shaft end of the supporting frame, and the first torsional spring is connected with the outer end of the butt joint part. According to the intelligent telegraph pole with the 5G signal transmission protection structure, a user can preliminarily position a signal transmission cable through the limiting part which is in threaded butt joint in advance, then the signal transmission cable is nested into a connecting part for secondary positioning of the end part, meanwhile, a spherical nesting part at the lower end and a torsion springare matched to support a butt joint reset structure, so that self-adaptive movable reset work is stably realized according to the stress condition of the cable, and the phenomenon that the cable is tightened due to a traditional positioning type installation structure is avoided.

The invention provides a short-slot type easy-to-adjust stone hanging piece system, and relates to the technical field of building curtains. The short-slot type easy-to-adjust stone hanging piece system comprises a hanging piece assembly and an adaptor, wherein the adaptor comprises a fixing part and a connecting part, a connecting hole is formed in the fixing part, the end, away from the fixing part, of the connecting part extends to form a bent part, the outer side of transverse beam angle steel is sleeved with the adaptor, the vertical lateral edge of the transverse beam angle steel is between the bent part and the connecting part and the adaptor can slide in the extending direction of the transverse beam angle steel. The hanging piece assembly comprises a hanging holder and a hanging piece, wherein the hanging holder is provided with a connecting plate which is inserted between the fixing part and the horizontal lateral edge of the transverse beam angle steel, a first threaded holeis formed in the connecting plate, a first bolt penetrates through the connecting hole and is in threaded connection with a first threaded hole, the first bolt abuts against the horizontal lateral edge of the transverse beam angle steel, the first bolt is connected with a compression nut which abuts against the fixing part, and the problems are solved that in the prior art, a hanging piece systemis affected by holes in a steel skeleton transverse beam, the performance of left and right adjustment along a transverse beam is poor, and the installation precision is poor.

The invention discloses an N-shaped right-angle bending type radio frequency coaxial connector. Two insulators are cooperatively connected with two inner conductors to form an L-shaped connector; thefirst inner conductor is in threaded connection with the second inner conductor to realize connection stability; the N-shaped right-angle bending type radio frequency coaxial connector is reliable andconvenient, can absolutely guarantee the interface size of the connector, is simple and convenient to assemble and operate, increases the finished product rate and improves the working efficiency; the N-shaped right-angle bending type radio frequency coaxial connector is simple in structure; the inner conductors are assembled to still be an integrated structure, so that the excellent high-frequency electric property of the whole connector is guaranteed; and the L-shaped connector structure is adopted, so that the problems that in the existing structure, no matter the inner conductors are directly bended or are bended after groove splitting, the size uniformity of the bended inner conductors is difficult to meet the requirement and the bended rejection rate is high are solved. The N-shapedright-angle bending type radio frequency coaxial connector guarantees excellent high-frequency property, meets the environment-resistant requirement, guarantees the requirement on the interface sizeby the connector, is convenient to assemble, increases the assembling finished product rate of the connector and improves the working efficiency.

The invention relates to a novel bus duct tapping device, which comprises a bus duct shell, a first connecting copper bar and a second connecting copper bar, wherein a main busbar is arranged in the bus duct shell; a first mounting groove and a second mounting groove are formed in two sides of the main busbar respectively; each of the first connecting copper bar and the second connecting copper bar comprises a primary plate and a secondary plate; one side of the primary plate is connected with the secondary plate and the other side is provided with a first bolt and a second bolt; a first protective plate is arranged outside the first connecting copper bar; a second protective plate is arranged outside the second connecting copper bar; and a protective cover board is arranged between the first protective plate and the second protective plate. The novel bus duct tapping device does not need to weld; the rated working current is not reduced; the security protection performance is high; and normal power taking of a jack box of which the heavy current is greater than 630A can be facilitated.

The invention discloses a construction method of a multi-layer steel truss building. The method comprises the following steps: arranging a plurality of reinforced concrete pedestals on the ground in the area corresponding to the steel truss to be arranged; arranging a support frame for bearing the load of the steel truss on the reinforced concrete pedestals, wherein the support frame extends upwards to the bottom of the bottom steel truss; sequentially mounting the steel trusses from the bottom layer to the top layer on the support frame, and integrally connecting the steel trusses with the main body frames on the two sides of the steel trusses; and constructing the main body frames on the two sides of the steel trusses from bottom to top before or while the steel trusses are arranged. According to the method, the support frame is arranged at the lower part of the steel truss and is capable of supporting the steel trusses to be constructed, so that the middle steel truss of the building can be mounted while the main body frames on the two sides are constructed, thereby increasing the construction speed, reducing the construction period and ensuring smooth delivery of the building.

The invention relates to a hidden frame glass curtain wall and a mounting method thereof. The hidden frame glass curtain wall comprises a plurality of mounting frames fixedly arranged on an building outer wall, jacking assemblies and a plurality of glass curtain wall units assembled on the outer sides of the mounting frames, wherein the mounting frames are provided with clamping pieces extending out of the outer sides of the mounting frames in a protruding mode, clamping spaces are formed inside the clamping pieces, and the jacking assemblies are adjustably arranged at the clamping pieces. Theends of the glass curtain wall units are inserted in the clamping spaces of the corresponding clamping pieces, the jacking assemblies are adjusted to jack the glass curtain wall units, the jacking assemblies and the clamping pieces are matched to clamp and fix the glass curtain wall units, and accordingly the glass curtain wall units are fastened on the mounting frames. According to the hidden frame glass curtain wall, the mounting frames are also hidden on the back face of the glass curtain wall, and the glass curtain wall units are clamped through the clamping pieces and the jacking assemblies and thus clamped and fixed to the mounting frames tightly, so that the mounting stability of the glass curtain wall units is guaranteed, and potential safety hazards are avoided.

The invention relates to a tool special for submerged-arc welding. The tool comprises a liner and a base. The bottom of the liner is provided with a connecting seat, a plurality of mounting holes are formed in the connecting seat, and connecting columns are arranged in the mounting holes. Springs are arranged outside the connecting columns, a groove is formed in the surface of the liner, the section of the groove is in an arc shape, a cavity is formed in the liner, a water inlet is formed in one side of the cavity, and a water outlet is formed in the other side of the cavity. First pipe flanges are arranged on the water inlet and the water outlet, the water inlet is connected with a water inlet pipe, the water outlet is connected with a water outlet pipe, second pipe flanges are arranged between the water inlet pipe and the corresponding first pipe flange and between the water outlet pipe and the corresponding first pipe flange, and a circulating water pump is mounted between the water inlet pipe and the water outlet pipe. The tool is reasonable in structural design, a machined workpiece is convenient to cool, pipe mounting stability is improved, and the machining efficiency of submerged-arc welding and workpiece quality can be improved conveniently.

The invention discloses a camera lifting device and a mobile terminal applying the camera lifting device. The camera lifting device comprises an installation plate, a drive mechanism and a lifting mechanism, wherein the drive mechanism is arranged on the surface of the installation plate; and the lifting mechanism is arranged on the surface, facing the drive mechanism, of the installation plate, is in transmission connection with the drive mechanism, and is used for installing a camera; and the drive mechanism drives the lifting mechanism to run so as to enable the camera to lift up or go down. According to the technical scheme provided by the invention, the problem of low transmission efficiency of an existing lifting camera can be solved.

The invention discloses a discrete operation and maintenance passage independently-supporting water surface photovoltaic power generation system. The water surface photovoltaic power generation systemcomprises a peripheral continuous operation and maintenance passage, wherein the peripheral continuous operation and maintenance passage comprises a long passage in a length direction and a wide passage in a width direction, the long passage is formed by sequentially assembling a plurality of walkway floating bodies along directions of two ends, the wide passage is formed by alternatively assembling walkway floating bodies and connection floating bodies along directions of two sides, a plurality of width-direction operation and maintenance walkways are arranged in the peripheral continuous operation and maintenance passage at intervals along the length direction, each operation and maintenance walkway is formed by alternatively arranging the connection floating bodies and the walkway floating bodies along the directions of two sides, the connection floating bodies at two ends of the operation and maintenance walkway both are arranged on side walls of the walkway floating bodies, and the peripheral continuous operation and maintenance passage is divided to form plurality of photovoltaic power generation regions. The water surface photovoltaic power generation system has the advantages of high transmittance, good hydrophilcity and structural stability. The invention also discloses an installation method of the discrete operation and maintenance passage independently-supporting water surface photovoltaic power generation system.

The invention relates to an automobile swing arm assembly of an independent suspension. The automobile swing arm assembly comprises a swing arm body, a ball pin and two bushings, wherein the ball pin and the swing arm body are fixedly connected through a bolt; the two bushings are in crimping fit with the swing arm body; a ball pin mounting clearance is formed in the swing arm body; a front swing arm and a rear swing arm are arranged at opposite positions of the swing arm body and the ball pin mounting clearance; the cross section of the front swing arm is I-shaped; S-shaped reinforcing ribs are arranged in the front swing arm; the cross section of the rear swing arm takes the shape of a groove; and the strength of the rear swing arm is greatly improved. According to the automobile swing arm assembly provided by the invention, an upper shoulder and a lower shoulder are additionally arranged in the front and rear of the ball pin respectively, and thus vertical force acted on the bolt and moment of the vertical force are transferred to the ball pin and the swing arm body; the rail end of a polished rod of the bolt penetrates into the ball pin mounting clearance which is formed in the front of the swing arm body, and thus stress on a polished rod and thread transition position of the bolt is reduced; and the functions of mounting a spiral spring, the ball pin, the front bushing, the rear bushing and a stabilizer bar connecting rod are integrated on one swing arm body, so that the structure is greatly simplified and the weight of the automobile swing arm assembly is reduced.

The invention discloses a solar water heater intelligent control device, which comprises a solar water heater, a solar cell panel, a gear guide rail and a mounting base, wherein the gear guide rail comprises driving gears and a driven gear, the driving gears are evenly arranged on the outer circumferential surface of the driven gear, and the driving gears are engaged with the driven gear. An installation method comprises the steps of: a, installing the mounting base; b, installing the gear guide rail; c, installing a supporting frame; d, installing the solar cell panel; e, and installing the solar water heater. The solar water heater intelligent control device and the installation method thereof effectively improve the utilization rate of the renewable energy sources such as solar energy,reduce the use of non-renewable energy sources such as coal and natural gas, maximize the heat exchange rate of the solar water heater, make the operation more automatic, effectively increase the using comfort and application range of the solar water heater, and enable the utilization rate of solar energy to be maximized in areas with insufficient sunlight.

The invention discloses a power line. The power line comprises a wire rod jacket layer, an inflation cavity is formed in a wire rod jacket layer, more than one inner core wires are arranged in the inflation cavity, more than one inner core wires are wrapped through an inner protective layer; more than one locating sleeves are arranged on the wire rod jacket layer in a raised manner, a movable cavity is arranged in each locating sleeve, guide sliding chutes are arranged on two sides of the inner wall of each movable cavity; a piston is arranged in the movable cavity, sliding blocks are arrangedat two sides of the piston; and the sliding blocks are arranged in the sliding chutes in a slide manner. The power line disclosed by the invention can be expanded by inflating the inert gas, so thatthe gap between the locating sleeves close to each other is pulled open after inflation, the power line and the inner wall of the line hole are in expansion contact always, thereby preventing the power line from swinging and displacing; and the internal core wire can be suspended in the power line after the expansion, thereby increasing the shock resistance and the shear resistance.

The invention discloses a quick-mounting partition vertical keel and a mounting method thereof, and belongs to the technical field of partition wall construction. The upper fixing piece and the lower fixing piece are arranged at the upper end and the lower end of the vertical keel respectively, the upper fixing piece is arranged on a top plate of a building to be partitioned, the lower fixing piece is arranged on a bottom plate of the building to be partitioned, and the vertical keel is arranged between the top plate and the bottom plate of the building to be partitioned in a limited mode through the upper fixing piece and the lower fixing piece. The invention discloses a decorative panel for mounting a partition wall. Through the arrangement of the upper fixing piece and the lower fixing piece, the vertical keel is rapidly installed; through the arranged upper fixing piece, the relative position between the upper fixing piece and the vertical keel in the height direction is adjusted, and the vertical keel can be adjusted and installed according to the actual distance between a top plate and a bottom plate of a building; the inserting grooves are formed in the outer sides of the vertical keels, the decoration panels can be rapidly installed between the two adjacent vertical keels in cooperation with the pressing plates, and the installation efficiency is improved on the basis that the installation stability of the decoration panels is guaranteed.

The invention discloses an environmental protection propaganda board facilitating propaganda paper replacement. The environmental protection propaganda board comprises two main support plates and secondary support plates, the bottom ends of the main support plates and the bottom ends of the secondary support plates are welded to form two bearing frames, a cavity is formed between each main supportplate and the corresponding secondary support plate, a transmission assembly is arranged at the top ends of the two bearing frames, and a cover plate and a carrier plate are welded between the upperends and the lower ends of two bearing frames respectively. A transmission rod and a roller screw rod are electrically driven to rotate in situ, a display board is driven to move vertically with upright rods as the fulcrums through transmission between the roller screw rod and a roller nut, the display board also moves in the limited range of the bearing frames, sealed protection can be conveniently performed on the display board and propaganda paper through tempered glass, by rapidly clamping and fixing the propaganda paper on the display board, rapid detachment and installation are realized,direct contact with the outside is reduced, the installation stability of the propaganda paper is easily guranateed, then the service life of the propaganda paper is prolonged, and the propaganda board can be repeatedly used.

The invention discloses a fiber grating-based spectrum detecting device. The spectrum detecting device comprises a grating group, a light source to be tested, a fiber circulator, a 1 x N optical switch, a photodetector, and a data acquisition module. An output light signal of the light source to be tested enters terminal 1 of the fiber circulator. Terminal 2 of the fiber circulator is connected toan input end of the optical switch. N output ends of the optical switch are connected to one ends of the N gratings. Signals reflected by the gratings enter terminal 3 of the fiber circulator throughthe optical switch. The terminal 3 of the fiber circulator is connected to an input end of the photodetector. An output end of the photodetector is connected with an input end of the data acquisitionmodule. An control end of the data acquisition module is connected to an switching control end of the optical switch. Switching the optical switch to process the signals collected on each grating anddisplay a signal of a spectrum of the light source to be tested. The fiber grating-based spectrum detecting device can meet different requirements and has the advantages that measurement errors caused by conveyance or vibration are avoided, the resolution of a spectrograph is improved by cooperation of coarse adjustment and fine adjustment.

The invention relates to an assembling, adjusting and fixing component for a laser cutter. Two holes are arranged at the bottom of an assembling frame, wherein one hole is a thread hole; a foot mat is arranged at the bottom of an adjusting bolt; the middle part of the adjusting bolt is matched with the thread hole by a thread; the other hole is a through hole; a supporting sidestep is arranged at the bottom of an adjusting bolt pad; two groups of nuts and washers are respectively arranged at the upper part and the lower part of the middle part of the adjusting bolt pad, arranged on the through hole; multiple groups of assembling frames are arranged at the bottom of a cutter body and are fixed with the cutter body by fasteners. The assembling, adjusting and fixing component has a simple and reasonable structure, can be assembled firmly and reliably, can be adjusted and operated simply and conveniently, can be assembled in a time-saving and labor-saving way, has light mechanism weight, can save cost, and can ensure the stable assembly and convenient adjustment of a table type laser cutting machine tool.

The invention provides a bone marrow puncture needle, which comprises a needle sleeve, a needle core and a limiting sleeve, wherein a puncture part is arranged at the head end of the needle core; matched first connection part and second connection part are arranged on the needle core and the needle sleeve respectively; the needle core and the needle sleeve are connected with each other through the first connection part and the second connection part along the length direction of the needle core; the needle sleeve sleeves the outside of the needle core and the puncture part is exposed; the limiting sleeve comprises a through hole which corresponds to the needle core in size along the longitudinal direction; a groove which is communicated with the through hole is formed in the outer surface of the limiting part along the longitudinal direction; the limiting sleeve sleeves the outside of the needle core through the groove and the through hole; two ends of the limiting sleeve are propped against the needle sleeve and the needle core respectively; and the puncture part moves back and forth along the length direction of the needle core and is accommodated into the needle sleeve. According to the bone marrow puncture needle, the limiting sleeve can be installed without taking out the needle core after puncture is ended, so that the puncture sampling time is shortened; and deviation in the puncture direction due to the fact that the needle core is taken out and is inserted again after the limiting sleeve is installed is also avoided.

The invention belongs to the technical field of building materials, and discloses an assembly type convenient-to-install composite structural slab. The slab includes an inner frame which is shaped bya cold-formed steel strip, the inner frame is filled with cementitious materials, the side edges of the inner frame are provided several first connection holes, one side edge of the inner frame is provided with a connection convex block, and the other side edge of the inner frame is provided with a connection groove. The connection convex block and the connection groove are both provided with elongated slots in which waterproof rubber belts are placed, and the first connection holes are provided with reserved holes facilitating the installation of fasteners. The slab can overcome the shortcoming of insufficient compactness between common wallboards and can meet the rigid requirements of the waterproof quality, the heat preservation quality and the like in construction engineering. Meanwhile, the problem of joint connection between assembly slabs is effectively solved, the solid waste material application technology is adopted for slab forming, and environmental hazards caused by solidwaste can be effectively reduced.

The invention discloses a camera rotating device. The camera rotating device comprises a base, an installation supporting plate, a rotating rod, a moving assembly and a camera, wherein a support is fixedly arranged at the center of the top of the base; the top of the support is fixedly connected with the bottom side surface of the installation supporting plate; a driving motor is arranged on one side of the top of the installation supporting plate; an output shaft of the driving motor is connected with a first gear; a bearing seat is arranged on the top, positioned at one side of the driving motor, of the installation supporting plate; the bearing seat is in interference connection with the rotating rod; a second gear sleeves the middle of the rotating rod; the second gear and the first gear are engaged each other; and the moving assembly is transversely arranged on one side of the rotating rod. The device has the beneficial effects that a protective cover is installed on the camera inthe prior art, a connecting frame, a rotating shaft and a micro-motor structure are arranged in the protective cover, and the rotating shaft can be rotated to store the camera into the protective cover when the camera is not used outdoors, so that damage to the camera is reduced, and the service life of the camera is prolonged.

The invention discloses a time switch battery box structure, which comprises a shell and an electrode elastic piece. The shell is provided with a battery chamber for battery storage and provided withmounting grooves corresponding to positive and negative ends of the battery chamber, and end inner walls of the positive and negative ends of the battery chamber are provided with a limiting projection and a limiting groove respectively. The electrode elastic piece comprises an elastic piece body portion and a press-fitting portion, the elastic piece body portion is matched with the mounting grooves to limit the electrode elastic piece in movement along an extending direction of the battery chamber, and the press-fitting portion extends into the shell to form elastic pressed connection with acircuit board. The elastic piece body portion comprises a limiting elastic piece, the limiting elastic piece is matched with the limiting projection corresponding to the end inner wall to limit the electrode elastic piece from shedding along an open direction of the battery chamber, each end elastic piece comprises a limiting insertion pin extending outwards and a fitting portion in contact with acorresponding battery electrode, and the tail end of each limiting insertion pin is abutted against the limiting groove bottom opposite to an opening. By the design, the electrode elastic piece is convenient to assemble, production efficiency in an assembly process is improved under the condition that operation stability of a time switch battery box is guaranteed, and production cost is reduced.

The invention discloses a method for detecting karst geology through elastic wave imaging chromatography, and also discloses a device for detecting karst geology through elastic wave imaging chromatography. The device comprises a fixing device and a detection device, the detection device is installed on the fixing device, and balancing mechanisms are arranged on the side wall of a CT detector in across symmetry manner; an end socket is arranged on the side wall of the CT detector through cooperation of a fixed cylinder, a buffer spring, a piston disc and a movable push rod, a cavity is formedin the end socket to install a ball, the ball extends to the outside of the end socket through a through hole in the side wall of the end socket, and when the CT detector enters a drill hole, the endsocket is pushed to compress the buffer spring through the movable push rod; after the CT detector completely enters the drill hole, the ball is tightly attached to the inner wall of the drill hole under the action of the relaxation force of the buffer spring, when the CT detector descends in the drill hole, and the ball rolls on the inner wall of the drill hole, so the stability of the CT detector during descending is guaranteed, and practicability and convenience are achieved.

The invention discloses a city utility tunnel. The city utility tunnel comprises tunnel unit bodies. T-shaped installation grooves are formed in both the two sides of the interior of each tunnel unitbody. A placement opening groove is formed in the upper surface of each T-shaped installation groove. A positioning hole is formed in the front end of the inner side surface of each T-shaped installation groove. A T-shaped installation block is in sliding connection with the inner side surface of each T-shaped installation groove. Both the two sides of the surface of the front end of each T-shapedinstallation block are connected with the inner side surface of the corresponding positioning hole through positioning rods in a sliding manner. The surface of the front end of each T-shaped installation block is connected to an opening in the front end of the interior of the corresponding T-shaped installation groove through a connecting block in a sliding manner. An installation screw is arranged on the surface of the front end of each connecting block. An installation nut is in thread connection with the outer surface of each installation screw. The rear side surface of each installation nut is connected to the front end of the inner side surface of each tunnel unit body through a top block in a sliding manner. With the city utility tunnel, convenience and stability of usage can be greatly improved, and safety is guaranteed.

The invention discloses a multifunctional integrated solenoid valve. The multifunctional integrated solenoid valve comprises a solenoid valve body, a solenoid valve cover, a water inlet, a combinationcoil, a return spring, a movable iron core, front surface membrane and an anti-blocking spring; a water outlet end of the solenoid valve body is connected with a constant-pressure constant-flow device; a water outlet end of the constant-pressure constant-flow device is connected with a vacuum breaker; a flow sensor is arranged between the solenoid valve body and the constant-pressure constant-flow device; the vacuum breaker comprises a shell and a water outlet; a cover is arranged at the top of the shell; a safe pressure relief sealing assembly which moves up and down is arranged between theshell and the cover; the safe pressure relief sealing assembly comprises an inner plug rod, a supporting sleeve, a safe pressure relief spring, a broken opening positioning ring, a check membrane anda vacuum breaking membrane; and a safe pressure relief opening is formed in the cover. The multifunctional integrated solenoid valve has a compact structure, convenience and reliability in assemblingand high operating stability, so that the functions are complete and the performance is ensured; moreover, the vacuum breaker is more concise in assembling; a positioning effect is good; and a safe pressure relief effect and a siphon preventing effect are better.