44results about How to "Easy maintenance and replacement work" patented technology

The invention discloses a pesticide spraying device for tea leave planting. The device comprises a fixing clamping rack, a material storage tank and a pesticide spraying device body, the material storage tank is fixedly limited onto the pesticide spraying device body, and a supporting rack is welded to the end, close to the material storage tank, of the upper end surface of the pesticide sprayingdevice body; a motor is fixedly limited onto the end surface of the supporting rack, a hand-supporting push rod is welded to the outer end, close to the supporting rack, of the pesticide spaying device body, and mobile wheels are arranged at four corners of the bottom of the pesticide spraying device body in a rolling mode; the fixing clamping rack is arranged on the bottom side of the back end ofthe pesticide spraying device body, sliding grooves which are distributed at equal intervals are formed in an inner cavity of the fixing clamping rack, and fixing racks are inserted in the middles ofthe sliding grooves; rotation shafts are rotatably connected to the portions, located at the upper ends of the fixing racks, of the fixing clamping rack, the rotation shafts and the fixing racks areparallelly arranged, fixed clamping teeth are welded to the inner side ends of the rotation shafts, and a feeding inlet is formed in the upper end of the material storage tank. The pesticide sprayingdevice for tea leave planting can achieve pesticide spraying and seedling protection work.

The invention discloses a device for eliminating and monitoring PT (Potential Transformer) secondary circuit voltage drop. The device comprises a voltage follower module circuit, a power module, a detection module, a CPU (Central Processing Unit) module and a switching module circuit, wherein the detection module is used for carrying out real-time sampling detection on an input / output end of the voltage follower module circuit; the CPU module decides the switching between the voltage follower module and an external resistance module through sampling, comparing and analyzing received electric power data so as to monitor a working condition of the voltage follower module; a circuit of the voltage follower module is packaged to form a first unit; circuits of the power module, the detection module, the CPU module and the switching module are packaged to form a second unit; the first unit and the second unit are movably connected through a pluggable connecting terminal; conductive contacts are arranged on the outer surface of the first unit, and paired conductive contacts are arranged on the second unit; part of the contacts are used for electrically connecting the voltage follower module circuit and the switching module, and the other part of the contacts are used for electrically connecting the voltage follower module circuit and the power module.

The invention provides a physiological sample storage device with a high multiple-protection effect. The physiological sample storage device comprises a storage box, a sealing door, an observation window, a door handle, a supporting edge, moving wheels, a brake pad, a cold fan, a gas conveying pipeline, an activated carbon filter screen, a temperature and humidity sensor, a PLC, a display screen,switches, an assembling plate, a fluorescent lamp, an ultraviolet lamp, an atomizer, a rotary observation frame structure, a reinforcing protection frame structure, an adjustment movable seat structure and a protection side plate structure; the sealing door is mounted on the right side of the front surface of the storage box through hinges; the observation window is inlaid in the middle of the interior of the sealing door; and the door handle is welded to the middle part of the right side of the rear wall of the sealing door. The physiological sample storage device has the advantages that dueto the arrangement of the rotary observation frame structure, when a sample utensil is placed, the sample utensil can be placed close to a corresponding placing plate, and meanwhile, the sample utensil is in an inclined shape, so that a worker can conveniently check the condition of the sample utensil.

The invention discloses a heat dissipation box body for packaging a lithium ion battery. The heat dissipation box body comprises an automobile bottom plate, a clamping plate, shunting fan blades, a cooling pipe and a push plate; a mounting plate is in bolted connection with the automobile bottom plate; a box shell is connected with the mounting plate through screws; gear columns are connected witha first gear tooth plate in a meshed mode; second gear tooth plates are connected with the gear columns in a meshed mode, and the tail end of each second gear tooth plate is connected with the bottomend of a clamping plate through screws; the clamping plate is connected with a filter screen plate in a clamped mode, and a rubber block is connected with the clamping plate through screws. The heatdissipation box body for packaging the lithium ion battery is provided with the clamping plate; the lithium ion battery drives a limiting rod to move downwards; the first gear tooth plate can drive second gear tooth plates on the two sides to move towards the middle at the same time through the gear columns; lithium ion batteries can be conveniently, rapidly and effectively limited and fixed one by one in cooperation with the clamping plate; and the situation that the lithium ion batteries are inconvenient to attach and fix for subsequent heat dissipation can be effectively prevented.

The invention discloses an electrical control cabinet capable of conveniently replacing and repairing elements. The electrical control cabinet comprises a control cabinet, wherein an adjusting structure is connected in the control cabinet, a bottom plate is connected to the control cabinet, a moving block is connected to the bottom end of the adjusting structure, a slideway is arranged in the control cabinet, a disassembling and assembling structure is detachably connected to the mounting structure, an element is connected to the side wall of one side of the disassembling and assembling structure, a torsion spring is connected to the disassembling and assembling structure, a limiting plate is connected to the moving block, a positioning structure is arranged on the side wall of the end, close to the moving block, of the adjusting structure, and a lifting column is connected into the positioning structure. According to the invention, the lifting column is pulled out of the groove through the shifting plate, the adjusting structure is pulled out of the box body through the handle, and after the adjusting structure and the mounting structure are pulled out of the box body, the dismounting and assembling structure is pulled out of the transverse plate forcibly, the inserting column clamped in the clamping groove expands outwards when stressed, and the clamping plate fixedly connected with the inserting column rotates along the torsion spring when stressed, so that dismounting is completed.

The invention discloses a monitoring probe with an alarm function for a dangerous river reach, and relates to the technical field of monitoring probes. The monitoring probe comprises a fixed base, a power box is welded to the top of the fixed base, and a battery pack is fixedly installed in the power box. A supporting column is arranged above the power box, and a driving motor is arranged in the supporting column. According to the monitoring probe with the alarm function for the dangerous river reach, a servo motor and an electric push rod are started, the servo motor drives a camera to rotate(transversely rotate) through a bearing, a rotating column and a connecting shaft, and the electric push rod enables the camera to rotate (vertically rotate), so that the monitoring work of the camera is conveniently completed. The monitoring mechanism is convenient to use and long in monitoring distance, the camera can carry out all-around monitoring work, when dangerous situations are monitoredin a river channel, the monitoring equipment can transmit information to a command and control center through a signal generator, in this way, rescue work can be carried out on drowning people in time, and high practical performance is achieved.

The invention relates to the technical field of mud valves, in particular to a diaphragm type mud valve which comprises a valve body, a valve rod, a valve clack and a sealing ring and further comprises a quick release cylinder. A sealing slope is arranged on the edge of the inner side of one end of the quick release cylinder, and an extending part capable of being matched with the outer contour of the sealing slope is arranged at the bottom of the sealing ring. A sealing stepped groove is formed in the outer edge of the end of the quick release cylinder, a bearing protrusion used for bearing the sealing ring is arranged between the sealing stepped groove and the sealing slope, a stepped layer extending outwards is arranged on the outer side of the sealing ring and can be located in the sealing stepped groove, and a sealing notch is formed in the top of the stepped layer. A pressing protrusion is arranged on the edge of the upper portion of the inner wall of the output end of the valve body, the quick release cylinder can be detachably pressed in the output end, the bottom of the edge of the pressing protrusion can be attached to the top face of the bearing protrusion, and an extrusion annular plate which can correspond to the sealing notch and can be extruded in is further arranged at the bottom of the pressing protrusion. According to the diaphragm type mud valve, the sealing ring of the valve body can be conveniently and rapidly replaced in the later period, and maintenance is facilitated.

The invention discloses a building talk-back extension mounting assembly with convenience in installation and replacement of an extension. The assembly comprises a box body, wherein the box body is connected with a first cover plate through hinges, a touch thin film is arranged on the first cover plate, an annular guide pipe is fixedly connected into the box body, sliding rods are symmetrically and fixedly connected onto the annular guide pipe, mounting plates are glidingly connected onto the sliding rods, embedding grooves are formed in the mounting plates, springs are symmetrically and fixedly connected onto the mounting plates, one end, away from the box body, of each spring is fixedly connected onto the corresponding mounting plate, and first sealing pipes are symmetrically and fixedlycommunicated with the annular guide pipe. According to the assembly, a threaded rod is enabled to rotate by rotating a rotary handle, then a second piston block is driven to move into a first pistonblock, so that hydraulic oil is pushed to flow, the hydraulic oil pushes a first piston block to move under the conducting action of the annular guide pipe, the two mounting plates are enabled to moveoppositely, the building talk-back extension is clamped and fixed, and fixed mounting is completed.

The invention belongs to the technical field of massage devices, and particularly relates to a muscle relaxing massage device after fitness. The muscle relaxing massage device after fitness comprisesa massage chair, a massage soft hammer and a foot massager. A backrest is installed on the left side of the outer wall of the massage chair, a first rotating shaft is connected to the middle positionof the backrest, and sound equipment is installed on the outer wall of the backrest; a first sliding groove is reserved in the inner side of the backrest, a first sliding block is connected to the inner wall of the first sliding groove, a rotating block is connected to the right side of the outer wall of the first sliding block, a massage block is installed on the outer side of the rotating block,the massage soft hammer is installed above the massage chair, a table board is fixed to the top of the massage soft hammer, second sliding blocks are connected to the two sides of the massage soft hammer, and a fixing rod is connected to the outer wall of the massage soft hammer. Compared with an existing massage device, the muscle relaxing massage device after fitness has the advantages that theinclination angle is convenient to adjust, the comfort degree is higher, the massage range is wider, the practicability is higher, cleaning and later maintenance and replacement work are facilitated,and the massage function is more comprehensive.

The invention discloses a non-excavation drilling machine dragging tube and a maintenance construction method thereof, relates to the pipeline engineering field, and aims at solving the problems that damage positions of an existing dragging tube are inconvenient to confirm, and therefore the existing dragging tube is inconvenient to maintain or replace, and use effects are influenced. The main point of the technical scheme is that the non-excavation drilling machine dragging tube comprises an inner tube and an outer tube fixed on the exterior of the inner tube in wrapping mode, wherein a plurality of electric conduction wires used for determining the damage positions of a pipeline are arranged between the inner tube and the outer tube, the plurality of the electric conduction wires are distributed around the circumferential direction of the wall face of the inner tube, and joints are respectively fixed on end portions of the electric conduction wires. The non-excavation drilling machine dragging tube and the maintenance construction method thereof can relatively facilitate damage position positioning for workers so as to facilitate replacement, and thereby are good in use effect.

The invention discloses an LED (Light Emitting Diode) lamp. The LED lamp comprises a mounting base plate, a lamp holder seat which is fixedly arranged on the mounting base plate, a light source body which is mounted and fixed in the lamp holder seat and is electrified, and a light transmitting cover which covers the light source body, wherein the light source body comprises a light source base plate, an LED light source structure which is fixedly arranged on the light source base plate, a driving circuit board which is electrically connected with the LED light source structure, an insulating sleeve seat which is arranged at the central position of the light source base plate and can be used for containing the lamp holder seat, and a lamp holder nut which is arranged in the insulating sleeve seat, is electrically connected with the driving circuit board and can be mounted in the lamp holder seat in a screw joint manner so as to be electrified with the lamp holder seat; and when the light source body is mounted, the insulating sleeve seat sleeves the lamp holder seat and the insulating sleeve seat is rotated so that the lamp holder nut is mounted in the lamp holder seat in the screw joint manner so as to be electrified with the lamp holder seat.

The invention discloses an anti-theft electromagnetic lock device for a rail transit platform door, and relates to the technical field of electromagnetic locks. The anti-theft electromagnetic lock device for the rail transit platform door comprises an anti-theft lock body, wherein an electromagnetic controller is fixedly installed in the anti-theft lock body; and the right side of the electromagnetic controller is fixedly connected with a first magnet. According to the anti-theft electromagnetic lock device for the rail transit platform door provided by the invention, a control button is pressed down, the electromagnetic controller is started and drives a fixed column to move through the first magnet, a second magnet, a spring and a fixed strip (the fixed column is moved out of a lock groove), then the electromagnetic controller is disconnected, and the fixed column is reset through the spring and the second magnet (the fixed column is moved into a sliding groove), so that the anti-theft electromagnetic lock is conveniently opened and closed; an opening and closing mechanism is stable in operation, simple in structure and convenient to use; and when temporary power failure occurs,the opening and closing work of the anti-theft electromagnetic lock can be achieved through a standby power source set, so that a high practical performance is achieved.

The invention discloses a panel lamp with light source bodies capable of being replaced. The panel lamp comprises a lamp disc provided with multiple light source holes, the multiple light source bodies which are clamped and fixed to the light source holes and are independent of one another, and a drive control device which is connected with the light source bodies and can control the light source bodies to work. The drive control device is installed on the lamp disc. The drive control device can control the light source bodies to independently work or simultaneously work. The same lamplight color or different lamplight colors can be adopted on the light source bodies, and the lamplight effects of the light source bodies are adjusted and controlled through the drive control device.

The invention relates to a fixing device of a floating slab track supporting structure. The fixing device comprises a sleeve, a fluted disc and a cover plate, wherein the sleeve sleeves the supportingstructure, the bottom end of the sleeve abuts against the foundation, and the middle and the top end of the sleeve are arranged in a floating slab track; a plurality of protruding L-shaped clamping plates are evenly distributed at the top end of the sleeve in the circumferential direction, L-shaped grooves with horizontal openings are formed between the L-shaped clamping plates and the upper edgeof the top of the sleeve, and a positioning opening is formed between the adjacent L-shaped clamping plates; a plurality of convex claws are arranged at the edge of the fluted disc and can be clampedinto the positioning openings, and the convex claws are meshed with the L-shaped grooves by horizontally rotating the fluted disc; a plurality of clamping grooves are formed at the edge of the lowersurface of the cover plate, and when the cover plate covers the top of the sleeve, the L-shaped clamping plates are engaged with the clamping grooves. Compared with the prior art, the supporting structure is not prone to lateral displacement, through the sleeve and the fluted disc, the mounting efficiency of the floating slab track supporting structure is greatly improved; the rotation of the fluted disc is limited through the cover plate, so that the influence of the external sundries on the internal supporting structure can be reduced.

The invention discloses an actuating mechanism. The actuating mechanism comprises an actuating mechanism body, a mounting gas chamber, a side rubber gasbag and a blocking rod, wherein a damping plug is in bolt mounting on the actuating mechanism body; a drive shaft is movably connected on the actuating mechanism body; a mounting plate is in bolt connection in the mounting gas chamber; the top endof the mounting plate is in bolt connection to a main rubber gasbag; a connecting hose is in bolt mounting on the main rubber gasbag; the top end of the connecting hose is in bolt mounting with the side rubber gasbag; and the side rubber gasbag is in bolt connection in the mounting gas chamber. The actuating mechanism is equipped with the side rubber gasbag, the drive shaft drives a fixed top plate to extrude the main rubber gasbag downwards in the mounting gas chamber; and under extrusion effect of the main rubber gasbag, gas is conveyed into the side rubber gasbag through the connecting hosewhile the side rubber gasbag can conveniently and quickly extrude, package and seal the fixed top plate, so that use sealing property of the actuating mechanism is effectively improved.

The invention provides a manipulator convenient to maintain and used for LED car lamp machining. The manipulator convenient to maintain and used for LED car lamp machining comprises a moving frame, a power motor mechanism, a first electric telescopic rod mechanism, a connecting block, a second electric telescopic rod mechanism, a rotatable and replaceable adsorption seat structure, a fixable and rotatable protective seat structure, a fixable and supported rotary frame structure, a liftable protective frame structure, a suction fan and a connecting hose, a horizontal ruler, a threaded rod, a rotary rod, an antiskid plate and universal moving wheels. According to the manipulator convenient to maintain and used for LED car lamp machining, through arrangement of a connecting seat, a sealing gasket, an inclined T-shaped adsorption seat, an air suction pipe, a silica gel ring and the second electric telescopic rod mechanism, threaded connection of the connecting seat and the inclined T-shaped adsorption seat in the using process is facilitated, the inclined T-shaped adsorption seat is rotated in the using process, and the inclined T-shaped adsorption seat is disassembled; and the inclined T-shaped adsorption seat can be conveniently replaced in the using process, and maintenance and replacement work can be conveniently carried out in the working process.

The invention relates to a novel emergency escape ramp, and belongs to the technical field of road safety real-time monitoring and protective devices. The novel emergency escape ramp is composed of water bags, a water pump, a pool, water packages, a pipeline, a one-way valve, a damping valve, a camera, a wireless communication device, a control device, a power supply device and an electromagneticvalve. The water bags are filled with water when no vehicle enters the emergency escape ramp; when the vehicle enters the emergency escape ramp, the water is pressurized and flows into the pool through the damping valve from a water outlet pipe, wheels are subjected to great resistance after sinking, and the purpose of deceleration for the car is achieved; and when the vehicle drives out of the emergency escape ramp, the solenoid valve is closed, the water pump conveys water into the water bags through the water inlet pipe, so that the pressure in the water bags can enable the vehicle to be ina state where the vehicle can drive out slowly. The novel emergency escape ramp provides effective measures for road safety protection and can reduce the loss of vehicles in distress.

The invention relates to the technical field of street lamps, in particular to a liftable street lamp which comprises a base plate, a supporting column is fixedly mounted on the base plate, the liftable street lamp further comprises a rotating seat, a lifting mechanism and a lifting mechanism, the rotating seat is located on the top of the supporting column, and a supporting plate is rotatably mounted on the rotating seat; the driving mechanism is located on the supporting column and connected with the supporting plate in a matched mode. The lifting mechanism is respectively connected with the supporting column and the supporting plate; wherein the lifting mechanism comprises a street lamp body, a clamping assembly and a folding and unfolding assembly, the clamping assembly comprises a clamping groove, an inserting groove, a connecting plate and a reinforcing unit, the liftable street lamp is novel in structure, easy to operate and low in production cost, the street lamp can descend to the ground for maintenance and replacement work, workers are prevented from climbing high, the risk is reduced, and the working efficiency is improved. And the working efficiency is improved, the problem that maintenance and replacement are inconvenient is solved, and convenience is provided for workers.

The present invention discloses an LED lamp. The LED lamp comprises a plurality of lamp body structures, installation cavity bases disposed on the lamp body structures, LED light source structures which can penetrate through the lamp body structures and be installed into the installation cavity bases, and a drive device disposed on the lamp body structures and electrically connected with the LED light source structures. A heat conduction installation plate is disposed on the upper end of each LED light source structure, two contact pin seats are disposed on the upper end of each heat conduction installation structure, each contact pin seat is provided with two conductive contact pins, and a screw hole post stretches upwards from the upper end of the heat conduction installation plate. Each installation cavity base comprises a cavity base housing installed on the corresponding lamp body structure, an installation seat disposed inside the cavity base housing, a conductive socket structure which is disposed inside the installation seat and can allow the conductive contact pins to insert in for electrification, and a screw structure which can penetrate through the cavity base housing and then be screwed into the screw hole so as to enable the conductive contact pins and the conductive socket structure to closely contact with each other and enable the cavity base housing and the LED light source structure to be in close fit at the same time for heat conduction and dissipation so as to ultimately realize an electric heating synchronous effect.

The invention discloses a pre-plasticized backpressure conversion valve block of an injection molding machine, relates to the field of valve block equipment, and provides the following scheme aiming at the problems that manual control of the injection molding machine is not convenient for electro-hydraulic control and the like: the pre-plasticized backpressure conversion valve block comprises an injection valve block, and a sandwich valve block is arranged on the top surface of the injection valve block; a plug-in type pilot overflow valve is arranged on the surface of the top of the sandwich valve block. By means of the principle that the bursad pulsation damper is installed in the change-over valve block, damage to the change-over valve block and other valve components in the change-over valve block due to the water hammer effect caused by too violent flowing of liquid is prevented, the pilot overflow valve is subjected to insertion treatment conveniently, the assembly space of the change-over valve block and the size of the valve block are reduced, and the cost is reduced. The overflow valve is convenient to maintain and replace, the defect that a pilot-operated type overflow valve cannot be installed in an integrated mode is overcome, the spring force in the plug-in type overflow valve is reduced, and high pressure adjusting deviation caused by too high spring rigidity is avoided.

The invention discloses a building intercom extension installation assembly which is easy to install and replace. An annular conduit is fixedly connected in the body, and a slide bar is symmetrically and fixedly connected to the annular conduit, and a mounting plate is slidably connected to the sliding bar, and an embedding groove is opened on the mounting plate, and a spring is symmetrically and fixedly connected to the mounting plate The end of the spring far away from the box body is fixedly connected to the mounting plate, and the first sealing tube is symmetrically fixed and communicated with the annular conduit. In the present invention, by turning the handle, the threaded rod is rotated, and then the second piston block is driven to move into the second sealing tube, thereby pushing the hydraulic oil to flow, and under the conduction action of the annular conduit, the hydraulic oil pushes the first piston block Move, so that the two installation plates move towards each other, clamp and fix the building intercom extension, and complete the fixed installation.

The invention discloses an agricultural machinery chassis which is convenient for automatically adjusting wheelbase balance. It includes a driving wheel, a track, a guide wheel, a top bracket, a first motor and a second motor, the top of one side of the driving wheel is connected to one side of the connecting bracket, and the top bracket is connected to the top of the connecting bracket, and One side of the other end of the connecting bracket is connected to the guide wheel, the top right side of the connecting bracket is connected to the motor shaft in the middle of the guiding wheel through a tension mechanism, and the middle of the connecting bracket and the connecting bracket is connected through the second telescopic cylinder. connect. The agricultural machinery chassis that facilitates automatic adjustment of the wheelbase balance can not only ensure the stability of the movement of the entire chassis during the process of changing the wheelbase, and will not cause serious jamming, but also during the process of wheelbase adjustment. There will be no misalignment between the driving wheel and the track, ensuring that the entire chassis is stable and coherent during the wheelbase adjustment process, and there will be no accidental effects.

The invention relates to the technical field of mud discharge valves, in particular to a diaphragm type mud discharge valve, which includes a valve body, a valve stem, a valve disc, and a sealing ring, and also includes a quick-release cylinder. The bottom of the sealing ring is provided with an extension that can match the outer contour of the sealing slope, and the outer edge of the end of the quick release cylinder is provided with a sealing step groove, and there is a bearing between the sealing step groove and the sealing slope to support the sealing ring. The outer side of the sealing ring has a stepped layer extending outward, the stepped layer can be placed in the sealing stepped groove, the top of the stepped layer has a sealing notch, the upper edge of the inner wall of the output end of the valve body has a pressing protrusion, and the quick release cylinder can The disassembled one is press-fitted in the output end, the bottom edge of the pressing protrusion can fit the top surface of the supporting protrusion, and the bottom of the pressing protrusion also has an extrusion annular plate that can correspond to the sealing notch and can be squeezed in. The invention facilitates the quick replacement of the sealing ring of the valve body in the later stage and is beneficial to maintenance.

The invention discloses an intelligent air circuit breaker. The intelligent air circuit breaker comprises an air circuit breaker device and an intelligent external control device, wherein the intelligent external control device is movably installed on an outer wall of the air circuit breaker device, and the intelligent external control device further internally comprises a reset structure, a signal prompt structure, an installation structure, an adjustable connection structure and an internal processor; the signal prompt structure is fixedly arranged on an outer wall of a bottom end of the reset structure, the mounting structure is fixedly arranged at a top end of the reset structure, an adjustable connecting structure is movably arranged below the reset structure, the internal processor is fixedly arranged in the reset structure, a user does not need to make direct contact with a circuit breaker switch, the remote wireless control effect can be achieved, signal lamp prompting can be achieved after power failure, and the intelligent air circuit breaker has advantages of being convenient to disassemble, assemble and maintain, flexible and adjustable in connecting structure and the like.

The invention provides a cable rack for electrical automation engineering construction and a using method thereof, and relates to the technical field of cable racks, the cable rack comprises a supporting plate, and a first screw rod is installed at the center position of the upper surface of the supporting plate. Through the arrangement of the first screw rod, the sleeve, the first screw hole, the extension rod, the second screw rod, the connecting rod, the second screw hole, the supporting frame, a fixing plate, a rotating shaft, a fixing frame, a fixing groove, a nut, an insertion hole, a supporting plate and an insertion rod, the first screw rod, the sleeve, the first screw hole, the extension rod, the second screw rod and the connecting rod are matched; the connecting function of the sleeve and the supporting plate and the connecting function of the extension rod and the connecting rod are achieved, meanwhile, the assembling and connecting work of the sleeve is more flexible, through cooperation of the supporting frame, the fixing plate, the rotating shaft, the fixing frame, the fixing groove and the nut, the fixing function of cables of various types is achieved, and through the inserting hole, the supporting plate and the inserting rod, the position adjusting function of the extension rod is achieved; and the function of adjusting the position of the cable is further realized.

The invention provides a coverage type belt conveyor dust cover assembly. The coverage type belt conveyor dust cover assembly comprises a (1) keel arranged above a belt of a belt conveyor, (2) a dust cover plate covering the keel and fixedly connected to the keel, (3) a dust cover support fixedly connected to the keel and used for supporting the keel and the dust cover plate, and (4) sealing assemblies arranged at the edges of the two sides of the dust cover plate to keep elastic sealing contact of the dust cover plate and the belt of the belt conveyor. Compared with a commonly-used full wrapping type belt conveyor dust cover assembly at present, the coverage type belt conveyor dust cover assembly directly covers the belt of the belt conveyor, it is guaranteed that dust cannot be leaked to the maximum degree, and the potential safety hazard that explosion under a certain dust concentration is caused by possibly-generated sparks caused by rotation of a carrier roller of the belt conveyor is avoided; and meanwhile, overhauling and replacement of the belt of the belt conveyor and the other components are facilitated, and manpower and materials are obviously saved.

The invention provides a modularized bus shelter. The modularized bus shelter comprises a main module, an advertisement stop board module and a seat module, wherein the main module comprises a panel, a left supporting plate is arranged at the left end of the panel, a right supporting plate is arranged at the right end of the panel, an advertisement wall is detachably connected to the rear part of the panel, a seat baffle is arranged below the advertisement wall, and a seat module is detachably connected to the front part of the seat baffle. The whole bus shelter is divided into a plurality of modules, initial installation and transportation of the bus shelter and later maintenance and replacement work of information equipment and the like are greatly facilitated, the construction time in public places is shortened as much as possible, and the safety of pedestrians passing by is guaranteed to a certain extent.

The invention discloses a separable pressing wheel carrier device and solves the problem that a lower pressing wheel, a lower pressing wheel axle and a bearing are inconvenient to dismount in the process of repairing of a tablet press. The separable pressing wheel carrier device is mainly characterized in that the device comprises a pressing wheel, a pressing wheel axle component and a worm gear transmission component, and the pressing wheel axle and the worm gear transmission component are fixedly connected through coupling screws. The separable pressing wheel carrier device is mainly used on a rotary tablet press.