40results about How to "Increase the usable area" patented technology

The utility model relates to the technical field of power construction, and discloses a power construction operation platform which comprises a moving trolley, a scissor type lifting frame is arranged on the upper surface of the moving trolley, a supporting platform is arranged on the upper surface of the scissor type lifting frame, a guardrail is fixedly connected to the upper surface of the supporting platform, and a protection supporting assembly is installed on the outer side of the guardrail. The protective supporting assembly comprises a connecting plate, one side of the outer wall of the connecting plate is fixedly connected to one side of the outer wall of the guardrail, a hinge seat is fixedly connected to the upper surface of the connecting plate, a hinge block is rotatably connected to the interior of the hinge seat, a supporting plate is fixedly connected to the upper surface of the hinge block, and a supporting net is fixedly connected to the interior of the supporting plate. The height of the supporting platform is adjusted through the scissor type lifting frame, the hydraulic rod drives the sliding block to enable the supporting plate to rotate and unfold, the supporting area is enlarged, and construction of operators is facilitated; tools can be placed above the supporting net, and the storage box in the storage box facilitates storage of maintenance tools, so that the practicability of the platform is improved.

The utility model relates to a mirror surface polishing device, and belongs to the technical field of mirror surface polishing. The mirror surface polishing device comprises a polishing assembly and a connecting frame, the connecting frame is arranged on a supporting plate and located above a rotary disc, a guide frame is movably connected to one side of the connecting frame, a pressing disc is attached to one side of the guide frame and located on the upper surface of the connecting frame in a sliding mode, and a driving assembly is arranged on the supporting plate and used for pushing the guide frame; when the rotating disc rotates, the circumferences of the contact faces between the lower portions of the two sides of the pressing disc and the rotating disc are different, the pressing disc is driven to rotate in the rotating process of the rotating disc, rotating friction force is provided for the mirror face, and friction of the mirror face is uniform. The pressure plate is far away from and close to each other by taking the axis of the turntable as a base point, so that the contact area between the polishing cloth and the pressure plate is greatly increased, the use area of the polishing cloth is increased, and the waste of resources is reduced.

This utility model discloses a safe operating platform for bridge construction, relating to the field of bridge construction. It includes a bottom component, with suspension rods at the upper end of each bottom component. An installation end is fixedly connected to the upper end of each suspension rod, and reinforcing crossbars are fixedly connected to opposite sides of each suspension rod. A side component is located at the lower end of the bottom component. Using this structure, after disengagement, the length of the bottom component can be increased by pulling the side sleeves to both sides. After adjusting the length of the bottom main board, the bottom component can be fixed by connecting the threaded post to the threaded hole, allowing the locking block to engage with the locking hole again. This allows for convenient adjustment of the operating platform's distance to increase the usable area during use. Furthermore, the flexible expansion mechanism allows for quick adjustment of the platform's left and right distance according to actual operational needs, adapting to different scales of work scenarios.

The utility model provides a nursing transfer pad belongs to medical nursing technical field. The nursing transfer pad includes the pad body, is sewed up the pad single and is used for fixing the patient's limbs' restraint belt on the pad body, the both sides of pad body are provided with the subsidiary pad that can be folded to the pad body bottom, the subsidiary pad is connected with the pad body through the air bag area and the soft connecting piece. In the above -mentioned scheme, the nursing transfer pad has two kinds of state of folding and unfolding, can decide whether to need to unfold the subsidiary pad of both sides according to the patient's body shape when using, under the unfolded state, the subsidiary pad of both sides will be in the same horizontal height with the pad body, increases the use area, improves the patient's comfort, when not using, can fold the subsidiary pad of both sides in the pad body bottom, to reduce the floor area.

The utility model relates to furniture field discloses a novel multifunctional sofa, including sofa back, the both sides fixed connection of sofa back have handrails, the fixed connection of handrail between have fixed plate, the top of fixed plate is stacked with two sofa cushions, the bottom of fixed plate is provided with mobile seat, the inside of handrail is provided with adjusting mechanism, this novel multifunctional sofa, through the cooperation of control handle, towrope, first limit slot, second limit slot, can adjust the position of mobile square column, when mobile square column removes the card slot, can then take out mobile seat from sofa bottom under the limit of limit slide groove, then put one of sofa cushions on mobile seat, can increase the use area, can continue to utilize control handle to pull towrope at the same time, remove mobile square column completely into mobile groove, can take out mobile seat completely, the cleaning of sofa bottom is convenient, solve the problem that the existing sofa is difficult to clean the dust and impurity of sofa bottom conveniently.

The utility model relates to a diaper table, concretely convenient diaper table of dismounting, this diaper table includes the fixed seat of table body and setting in the below of table body, wherein the table body includes the support table and sets up the movable plate on the support table, two convex parts are symmetrically arranged in the bottom of support table, two convex parts are integrally formed with support table, and the inside of support table forms the sliding slot, and the operating block, inner slide and locking block are set up in the sliding slot, wherein the inner slide sets up between operating block and locking block, locking block is commonly provided with two, and positioning strip and spring connected with positioning strip are arranged on both ends of inner slide, wherein two positioning strips are fixed with support table. The convenient diaper table of dismounting can make the whole diaper table move to other positions with the baby carriage and use, can also take off the support table from the fixed seat and place and use in any scene, therefore, the use of support table is facilitated, and the use scene is enriched.

The utility model relates to related technical field of house car accessories especially, house car side desk, including mounting bracket, the inner wall rotation of mounting bracket is connected with two rotating shafts, and the surface fixed connection of two rotating shafts has movable table board. The house car side desk, through the setting of auxiliary assembly, in use, can utilize auxiliary mechanism under the premise of not influencing movable table board itself available space to increase movable table board's available area, and can separate the space and movable table board, and the convenient placement different object carries out the distinguishing operation, support mechanism can improve the stability when using auxiliary mechanism, will not appear the situation of collapse, in addition through the setting of stabilizing assembly, can utilize the stable support force dispersion movable table board on object weight for the tensile force of mounting bracket of the vacuum chuck negative pressure adsorption, ensure the stability of movable table board in the use process, will not appear movable table board on the pressure too big leads to the situation that mounting bracket and house car outer surface separate.

The utility model relates to a pet toilet which comprises a toilet body, a urine falling opening is formed in the toilet body, inserting grooves are formed in the inner sides of the edges of the upper surface of the toilet body, at least one inserting groove is a continuous long groove, and the other inserting grooves can be continuous long grooves or discontinuous short grooves. An inserting piece matched with the long groove is arranged below the edge of one side opposite to the long groove, and when two or more toilet bodies exist and the inserting piece is inserted into the long groove of the adjacent toilet body, the two toilet bodies can be spliced, and modular application of the toilet bodies is achieved.

The utility model discloses an expandable combination cabinet, including cabinet, baffle and placing plate, the cabinet is fixedly installed with baffle in, the cabinet is connected with placing plate through the limiting structure, the cabinet outside top and bottom respectively install expansion structure and dehumidification structure, dehumidification structure includes dehumidification groove, dehumidification board, magnetic attraction frame and metal baffle, the inlaying of magnetic attraction frame has in the dehumidification groove front side wall, the dehumidification groove front side has the metal baffle through the adsorption of magnetic attraction frame, expansion structure includes expansion groove, first threaded hole, expansion board, fixed groove and fixed screw rod. That expandable combination cabinet, through dehumidification structure, it is convenient to carry out the damp of cabinet, avoid moisture to immerse in the cabinet, influence cabinet service life, through expansion structure, it is convenient to expand the use area of operation platform, improve the flexibility and convenience of cabinet, through the limiting structure, it is convenient to dismouting placing plate to improve the utilization of cabinet.

The utility model discloses a pin assembly and a plug. The pin assembly comprises a first shell, a rotating shaft, a pin and a limiting assembly, the first shell is provided with a containing groove and a receding opening; the rotating shaft is located in the containing groove and rotationally connected to the first shell in the first axial direction, the circumferential side face of the rotating shaft comprises a positioning face, and the positioning face comprises a first abutting face and a second abutting face which are arranged in the circumferential direction of the rotating shaft; the pin penetrates through the avoidance opening, and the rotation track of the pin is provided with a storage position and a first unfolding position; when the pin is located at the storage position, the extension direction of the pin is a first direction, and the limiting assembly abuts against the first abutting surface; when the pin is located at the first unfolding position, the extension direction of the pin is a second direction, the limiting assembly abuts against the second abutting face, and the included angle alpha formed by the first direction and the second direction is larger than 0 degree and smaller than 90 degrees. And the storage volume of the plug can be reduced, so that the plug is more convenient to carry and store.

The utility model discloses a kind of photo frame corner cutting machines of scrap easy to clean, including multiple support legs, a workbench, two scale plates, a moving frame, a driving cylinder, a saw blade, two abutting cylinders and controller, wherein two The support leg side wall is fixedly connected with bottom plate, the workbench upper end is provided with guide chute, the guide chute is equipped with conveying mechanism for conveying scrap, the conveying mechanism includes two rotating shafts rotatingly connected in guide chute inner wall.The utility model is provided with conveying mechanism, scrap in guide chute is automatically conveyed by motor drive conveyor belt, realizes the automatic discharge of scrap, without frequent cleaning by hand, reduce the labor intensity of operator.

The invention discloses a laboratory wallboard structure used in an enclosure structure and a construction method thereof, the laboratory wallboard structure comprises a base, a sliding groove is formed in the base, a notch is formed in one side, back on to the enclosure structure, of the base, and the notch is communicated with the sliding groove; the unit plates are arranged in the sliding grooves in a sliding mode to be spliced to form a wallboard body, a notch is formed between the two ends of the wallboard body, the outer side of one end face of the wallboard body and the inner side of the other end face of the wallboard body extend to form protruding edges respectively, and inclined end faces are formed on the opposite sides of the two protruding edges. The crossed ring plate is embedded between the inclined end faces, the end faces of the two opposite ends of the crossed ring plate are tightly attached to the two inclined end faces respectively, flange plates are formed on the inner sides of the two end faces of the crossed ring plate, and the two flange plates of the crossed ring plate are in lap joint with the inner sides of the two ends of the wallboard body respectively. The problems that in a traditional installation mode that the wallboards in the purification laboratory adopt color steel plates, indoor assembly wallboard installation space needs to be reserved, and the use area of the purification laboratory is reduced are solved.

The utility model relates to the technical field of household appliances, and provides a cooking device which comprises a furnace body and a lighting assembly, the furnace body comprises an inner container, a heating cavity is formed in the inner container, a protruding portion is arranged on the top wall of the inner container, a light hole is formed in the protruding portion, the lighting assembly is arranged above the outer portion of the protruding portion, and the lighting assembly comprises a furnace lamp, a heating device and a control device. The furnace lamp corresponds to the light hole in position, and the central axis of the furnace lamp is parallel to the top wall; the plane light-transmitting lampshade is arranged between the furnace lamp and the top wall, the light-receiving protective lampshade is arranged outside the furnace lamp in a covering mode, the furnace lamp is installed on the light-receiving protective lampshade, and a heat dissipation hole structure is arranged on the light-receiving protective lampshade. According to the cooking equipment, on one hand, the use area of the heating cavity is increased; on the other hand, the structural strength of the heating cavity is improved, and deformation of the top wall is prevented; in addition, the heat dissipation effect of the furnace lamp is improved.

The utility model discloses a kind of sealing structure of temperature and humidity vibration comprehensive test box, it is arranged between the bottom plate of test box and vibration table, the sealing structure includes first vibration table cloth and second vibration table cloth fixed in one end in both sides of vibration table, magic tape is set in the other end of first vibration table cloth, metal ring is set in the other end of second vibration table cloth, and the other end of first vibration table cloth and second vibration table cloth is detachably connected between the bottom plate of test box.Second vibration table cloth one end is pressed on the bottom plate of test box through metal ring, and the magic tape of first vibration table cloth one end is pasted to the bottom plate opening edge of test box, it is convenient to frequently dismount, set two layers vibration table cloth, can guarantee sealing effect.

The application belongs to the technical field of building construction, and particularly relates to a prefabricated elevator shaft inner wall anti-falling noise reduction plate and a mounting method, which comprises a noise reduction plate, cast-in-place concrete and an anti-falling connecting piece, the anti-falling connecting piece is horizontally arranged and embedded in the cast-in-place concrete, the noise reduction plate and the cast-in-place concrete are integrally formed through the anti-falling connecting piece, the noise reduction plate comprises a convex block plate and a concave groove plate, a plurality of convex block portions are arranged on the side surface of the convex block plate close to the concave groove plate, a plurality of concave groove portions corresponding to the convex block portions are arranged on the side surface of the concave groove plate, and the side surface of the concave groove plate away from the convex block plate is fixedly connected with the cast-in-place concrete through the anti-falling connecting piece; compared with the prior art, the application has the advantages and positive effects that the cost is low, the wall cost is reduced, the building wall noise reduction and structure integration can be realized, the building wall heat preservation and structure have the same service life, and the problems of high maintenance cost and high maintenance frequency of the traditional sound absorption and noise reduction system are solved.

The utility model relates to the technical field of rectification devices, and discloses an efficient rectification device for leather assistant production, which comprises a rectification tower body, a plurality of sieve plates are fixedly connected in the rectification tower body in a staggered manner, and the left side of the rectification tower body is connected with a reboiler through a circulating pipeline. A feeding pipe is fixedly connected to the left side surface of the rectifying tower body, an arc-shaped shell is fixedly connected to the left side inner wall surface of the rectifying tower body, a reinforcing rod is fixedly connected to the right side inner wall surface of the arc-shaped shell, a liquid distribution filter screen is fixedly connected to the interior of the arc-shaped shell, and an arc-shaped inclined plate is fixedly connected to the bottom of the arc-shaped shell. According to the utility model, through the matching of the arc-shaped shell, the reinforcing rod, the liquid distribution filter screen and the arc-shaped inclined plate, a liquid material entering the rectifying tower body through the feeding pipe can be buffered and decelerated, and the material flows along the tower wall and is more stably blended into a gas-liquid system in the tower, so that a liquid layer on a sieve plate is prevented from being burst open due to direct falling of the liquid.

This utility model discloses a car coat rack assembly, relating to the field of car coat rack technology. It includes a high-strength plastic sheet, with a connecting structure fixedly installed on the back of both sides of the high-strength plastic sheet. This connecting structure is telescopic. Two straps are fixedly installed on one side of the high-strength plastic sheet, and a connecting strap is provided on another side. Velcro hooks are fixedly installed on both the upper and lower sides of the high-strength plastic sheet, and Velcro loops are fixedly installed on one side of each side of the connecting strap, with the loops corresponding to the hooks. Two storage bags are fixedly installed on one side of the connecting strap. This car coat rack assembly, through its storage structure, can effectively store small items and prevent them from slipping. The telescopic connecting part, with bolt holes, makes the connection between the frame and the car body more stable and adaptable to different car models, improving the usability of the car coat rack.

The utility model provides a kind of table board for vehicle, it is related to the technical field of vehicle accessories, the table board for vehicle, including table board, inner bracing clamping mechanism, transmission mechanism, bottom cylinder, through slot, extension wall, support body, extrusion surface, fixed plate, hook tongue, screw rod, sleeve, connecting piece, side wall;The upper end of screw rod is provided with screw cap;Transmission mechanism has fixed end and movable end, and fixed end and movable end are connected by disc damping pivot ware between fixed end and movable end, and fixed end is fixedly connected with bottom cylinder, and movable end is detachably connected between movable end and table board, the table board for vehicle can significantly expand the use area of handrail area in vehicle when using, so more articles of user can be placed, to increase the use experience of user, and the position of table board can be adjusted, when the part area of handrail is shielded by table board, table board can be directly rotated, to reduce the shielding of part area of handrail by table board, so table board does not need to be directly disassembled, and use effect is good.

The invention provides a preparation method of a hydrogen evolution electrode based on femtosecond laser liquid phase processing, and relates to the technical field of femtosecond laser liquid phase microprocessing. The method comprises the following steps: performing grid scanning processing on the surface of a conductive substrate in an air environment by adopting femtosecond laser, and constructing a micron-sized columnar microstructure array to obtain a columnar microstructure array substrate; immersing the columnar micro-structure array substrate into a CuCl2 solution, performing transverse scanning processing by adopting femtosecond laser in a liquid phase environment, and growing a nickel-copper oxide and nickel-copper alloy composite nanoparticle layer on the surface of the columnar micro-structure array substrate in situ to obtain a three-dimensional micro-nano composite structure electrode substrate; and sequentially carrying out cleaning, electrochemical activation and drying on the electrode substrate to obtain the hydrogen evolution electrode. The electrode provided by the invention has high specific surface area and excellent bubble desorption capability, can improve the interface mass transfer efficiency and hydrogen evolution reaction kinetics, and improves the long-term working stability.

The present application relates to the technical field of outdoor camping equipment, and discloses a combined multifunctional camping vehicle, which comprises an expansion unit, a movable support unit arranged on the expansion unit, a load cabin arranged on the movable support unit, a brake wheel arranged on the expansion unit, a movable pull rod arranged on the expansion unit, and a rope arranged on the expansion unit. The movable plate cooperates with the cabin side wall to make the cabin side wall outwardly expand by 0-90 degrees relative to the cabin bottom wall, so that the bottom capacity of the camping vehicle can be regulated according to the number of articles in the moving state, the situation that articles fall off when the camping vehicle moves due to article stacking is reduced, and the stability of the camping vehicle when loading articles and moving is improved. Meanwhile, the movable plate and the connecting seat are matched to drive the cabin side wall to outwardly expand by 90 degrees relative to the cabin bottom wall, a tabletop layout surrounding the cabin bottom wall is formed, the use area of the overall tabletop is expanded, more people can be seated around the tabletop, and the camping vehicle has multiple functions.

The utility model provides a foldable draining rack and a water tank, and belongs to the technical field of kitchen utensils. The draining rack solves the problems that in the prior art, a draining rack is large in occupied space, inconvenient to store, unstable in cooperation with a tank body and the like. The foldable draining rack comprises at least two draining assemblies, each draining assembly comprises a draining plate, a first cover plate and a second cover plate, one of the first cover plate and the second cover plate is detachably connected with the draining plate, and the other one of the first cover plate and the second cover plate locks connection among the first cover plate, the second cover plate and the draining plate; the connecting piece comprises a first connecting end and a second connecting end, the first connecting end and the second connecting end are clamped between the first cover plate and the second cover plate in the corresponding draining assembly respectively, a deformation part is arranged between the first connecting end and the second connecting end, and the two draining assemblies are flatly laid or folded through the deformation part. The folding table has the advantages of being foldable, convenient to store and capable of being placed stably.

The utility model discloses an unmanned plane assembly platform for unmanned plane training, including bottom plate, the upper end fixed setting has the support frame, be provided with first platform board on the support frame, both ends of first platform board all are provided with extension structure, the extension structure includes second platform board and support leg, the extension structure is provided with two groups, and the extension of first platform board is realized through the extension structure, second platform board sets up both ends of first platform board, be provided with storage structure on the support frame, the storage structure includes mounting bracket and storage box, mounting bracket sets up on the support frame, storage box sets up on mounting bracket, the storage structure is provided with two groups, is set up to place the groove on storage box, the groove is set up to many, through storage structure, the part required to the unmanned plane of assembling is placed conveniently.

The utility model discloses a laser processing device and processing equipment, the laser processing device comprises a plate moving structure, the plate moving structure comprises a base, a first connecting piece, a second connecting piece, a first moving piece and a second moving piece, the first moving piece is in sliding connection with the base along a first direction through the first connecting piece and the second connecting piece, and the second moving piece is in sliding connection with the base along a second direction; the second moving part and the first moving part are in sliding connection in the second direction; the cabinet body assembly comprises a first cabinet body and a second cabinet body, and the first cabinet body, the base and the second cabinet body are sequentially arranged at intervals in the second direction; the bearing part comprises a first bearing part, a second bearing part and a third bearing part, the bearing part is located between the first moving part and the base, a first channel is formed between the first bearing part and the second bearing part, and a second channel is formed between the second bearing part and the third bearing part. According to the embodiment of the utility model, the space utilization rate of the laser processing device can be improved.

The utility model belongs to the technical field of table cabinets, and particularly relates to a ship cabin folding type multifunctional table cabinet which comprises a cabinet body, a first stand column is fixedly connected to the upper surface of the cabinet body, a main table plate is fixedly connected to the upper surface of the first stand column, and a second stand column is fixedly connected to the lower surface of the main table plate. A second stand column is fixedly connected to the bottom of the main table plate, a first hinge is fixedly connected to the left side of the main table plate, an expansion plate is fixedly connected to the bottom of the first hinge, and a rectangular column is fixedly connected to the right side of the expansion plate. According to the folding type multifunctional table cabinet for the ship cabin, the turnover expansion plate is arranged on the side face of the table plate, when operation such as multi-person dining and large-scale drawing is needed, the expansion plate can be turned over to be in the horizontal state, the expansion plate and the table plate form a complete plane, and the use area is effectively increased; when not in use, the expansion plate can be overturned and folded, and the desk and cabinet space occupation is greatly reduced by combining the design that the desk plate is hinged to the cabinet body and can be overturned upwards.

The utility model relates to sponge sand block technical field, and disclose a kind of composite grid sponge sand block, including the multiple sponge body of being sequentially arranged from top to bottom, the thickness of each sponge body is ladder type drop from top to bottom, the right side of the sponge body is provided with bearing cloth.This kind of composite grid sponge sand block, by setting up multiple sponge body and making the size of sponge body ladder type change, when facing different size inner recess type polishing environment, the appropriate sponge body can be selected according to the size of groove and inserted into groove to carry out accurate polishing, when facing large-area polishing environment, expand sponge body, can increase the use area of sanding layer, to improve polishing efficiency, when the sanding layer of one side of sponge body is lost due to wear, the sponge body can be turned over to use other un-worn side, prolong the overall service life, improve material utilization, to realize the advantages of wide use scene, high material utilization.

This invention relates to an airtight material for ultra-low energy consumption masonry structures and its preparation method. The airtight material comprises, by weight, 15-25 parts of cenospheres, 10-20 parts of silica, 15-25 parts of hydroxyapatite, 5-15 parts of wollastonite fiber, 12-20 parts of bone glue, 4-8 parts of borax, and 10-16 parts of tertiary carbon redispersible latex powder. The airtight material provided by this invention exhibits superior performance indicators such as water vapor equivalent air layer thickness (Sd), tensile bond strength, water vapor permeability, and water absorption compared to similar plastering mortar products on the market. Furthermore, it is non-toxic, harmless, safe, and environmentally friendly. Compared to existing similar products, it offers advantages such as better workability, crack resistance, and thinner airtight layer thickness.

The utility model discloses an electric lifting table, aims at solving the problem of the too messy influence of the socket and data line on the table area. Its technical scheme main points are: including main table board, two table legs, storage groove, vice table board, two steel frames and wire arrangement groove, the table leg is fixedly connected with the main table board through the steel frame, the vice table board is hinged in the end of steel frame between the steel frame, the wire arrangement groove is set between the main table board and vice table board, the storage groove is fixedly connected between two steel frames, the wire arrangement groove is above the storage groove. The utility model discloses vice table board can realize rotation through hinge connection. When vice table board is laid flat, the width of the table is increased, and thus the use area of the table is increased. When vice table board is opened, the storage groove under the table can be seen, and the data line and socket and other equipment can be put into the storage groove, the use space of the table is saved, and the table is more neat.

The utility model belongs to the technical field of bicycle rear goods shelves, particularly relates to a bicycle rear goods shelf connected with a fender, and provides the following scheme aiming at the problems that the use area is inconvenient to adjust and the stability of carried articles is lower in the use process of the existing bicycle rear goods shelf: the bicycle rear goods shelf comprises a goods shelf main body and a baffle plate, the baffles are fixedly installed on the goods shelf body. The number of the supporting columns is four, the four supporting columns are fixedly installed on the goods shelf body, and first sliding grooves are formed in one ends of the four supporting columns; the number of the first supporting rods and the number of the second supporting rods are both two, the two first supporting rods and the two second supporting rods are slidably installed in the four first sliding grooves correspondingly, and connecting pieces are fixedly installed at one ends of the two second supporting rods correspondingly; in the use process, the use area can be conveniently adjusted, the stability of carried articles is high, the structure is simple, and use is convenient.

The utility model relates to the technical field of wall-mounted folding tables, in particular to a wall-mounted folding table capable of being stored. The desk comprises a desk plate rotationally connected to a wall body through hinges and a fixing rod fixedly connected to the wall surface, an expansion assembly is arranged on one side of the desk plate, desk legs are rotationally connected to the lower end of the desk plate, a rotating rod is rotationally connected to the other end of the fixing rod, a first connecting rod is rotationally connected to the left ends of the desk legs, and a second connecting rod is rotationally connected to the right ends of the first connecting rod. The lower end of the table plate is rotatably connected with a first connecting rod, the lower end of the table plate is rotatably connected with a second connecting rod, the first connecting rod and the second connecting rod are rotatably connected through a rotating shaft, the expansion assembly comprises expansion plates which are slidably inserted into the two ends of the table plate, and a fixing mechanism used for fixing the expansion plates is arranged on the front face of the table plate. The expansion board on one side is dragged, the expansion board on one side is expanded outwards through the transmission mechanism, then the expansion boards are fixed through the fixing mechanism, and then the function of expanding the usable area of the table board as much as possible is achieved.

The application discloses a multifunctional small table plate for rail transit, and relates to the technical field of high-speed rail equipment.The multifunctional small table plate comprises a support plate, a driving motor, a threaded rod, a threaded sleeve, a main table plate, a sub table plate and an intermittent control assembly.The driving motor drives the threaded sleeve to move, and the main table plate is driven to rotate and unfold around the connecting support through the first connecting rod.The sub table plate can be slidably accommodated in the main table plate and is pulled outwards when it needs to be extended.The key lies in the intermittent control assembly: during the pulling process of the sub table plate, the linkage mechanism drives the control rod to move downwards, the triangular chuck head is made to pass over and hook the control push head to realize automatic segmented locking, external force or bumping is effectively prevented from causing retraction, and the use stability is ensured;when the sub table plate is retracted, the L-shaped connecting rod needs to be slightly pulled to trigger the unlocking mechanism to make the L-shaped connecting rod separate from the control groove, and then the sub table plate can be smoothly pushed back.The multifunctional small table plate realizes one-key unfolding of the main table plate, flexible length adjustment and reliable self-locking of the sub table plate, has compact structure, safe and convenient operation, and is particularly suitable for the rail transit environment.