60results about How to "Not easy to scratch" patented technology

The invention discloses a spherical lens precise edge grinding machine with a self-adaptive floating centering mechanism, and relates to the technical field of intelligent machining equipment.The spherical lens precise edge grinding machine comprises an equipment body, a clamping mechanism and a grinding mechanism, the equipment body comprises an operation table, a rack is fixedly arranged on the upper surface of the operation table, and a fixing shell is fixed to the top of the rack; the front surface of the fixed shell is fixedly connected with a mounting plate; and the grinding mechanism comprises two limiting seats on the surface of the mounting plate. A laser sensor transmitting end and a laser sensor receiving end are arranged, the laser sensor transmitting end and the laser sensor receiving end and the grinding head are located on the same longitudinal plane, the center position of a spherical lens can be accurately detected, accurate centering and clamping of the lens are achieved in cooperation with a pneumatic chuck and a three-clamping-jaw clamping mechanism, the deviation problem in the edge grinding process is effectively avoided, and the production efficiency is improved. The edge grinding precision and consistency of the spherical lens are improved; meanwhile, the three clamping jaws of the pneumatic chuck are provided with the rubber blocks with the arc-shaped clamping grooves, the rubber blocks are attached to the shape of the spherical lens, clamping is more stable, and the surface of the lens is not prone to being scratched.

The utility model discloses a double straight line edging machine of convenient reclaiming relates to edging machine technical field, including: equipment main part, polishing motor, conveyer belt, water receiving box, drain pipe and waste water collection box, the inner side of equipment main part is equipped with polishing motor and conveyer belt respectively, the surface of equipment main part close to conveyer belt is equipped with water receiving box. According to the double-straight-line edge grinding machine facilitating material taking, when the telescopic end of a pneumatic push rod retracts, a connecting rod can be driven to move in the direction close to a rotating base, when the connecting rod moves, a guide column and the rotating base can be driven to slide, a filter screen can filter glass waste chips in waste water, and after the glass waste chips are filtered, the waste water can be conveniently taken out. And the filtered water can be conveyed to a designated position through a drain valve and a pipeline, the waste water can be reused after being cooled, and the waste water can be recycled in a manner of filtering glass scraps in the waste water, so that water resources are saved.

The present application belongs to the technical field of metal material casting and rolling, and discloses a vertical casting and rolling pouring system, which comprises a front box, a closed channel assembly arranged below the front box, a casting nozzle arranged at the bottom end of the closed channel assembly, a second runner arranged at one side of the front box, a downspout arranged at the end of the second runner away from the front box, a first runner arranged at the top end of the downspout, a first flow control device arranged at the pouring position of the first runner, and a second flow control device arranged at the pouring position of the front box. The serpentine channel composed of the first, second and third stop blocks arranged in the inner cavity of the casting nozzle can realize stable metal liquid supply. The pouring system has simple structure, convenient installation and debugging, and is suitable for mass production. In the vertical direction, the slag and bubbles in the metal liquid can float upwards and prevent entering the product, thereby improving the internal quality of the product.

This utility model discloses a single-pitch shift fork mechanism for sign assembly, relating to the field of sign assembly technology. It includes a mounting plate with a mounting rod fixedly connected to the top, and a guide plate three fixedly connected to the top of the mounting rod. In this utility model, the insertion rod is slidably connected to an auxiliary component, and the guide plate two is slidably connected to the guide plate one. A shift fork pitch cylinder drives the shift fork body to move, and the insertion rod slides along the auxiliary component, achieving distance adjustment between the two shift fork bodies. The shift fork cylinder drives the shift fork body and guide plate two to move, and the shift fork mechanism transfer cylinder drives the guide plate one to move along the guide rail, enabling the insertion and movement of signs, thereby assisting in sign assembly, reducing manual labor, preventing hand injuries, and ensuring assembly safety. A buffer plate is used to cushion and protect the sides of the guide plate one and limit its movement range, preventing the bottom of the guide plate one from separating from the guide rail.

The application relates to a plate cutting equipment, which comprises a workbench, a support fixedly arranged on the workbench, a cutting knife rotationally connected to the support, a rotating shaft of the cutting knife being arranged perpendicularly to a plate feeding direction, a pressing plate connected to the support and capable of moving towards or away from the workbench, a pressing wheel rotationally connected to one side of the pressing plate close to the workbench, and the pressing wheel being capable of abutting against one side of the plate away from the ground. The pressing wheel is arranged so that the pressing wheel can rotate when the pushing plate pushes the plate, thereby reducing the possibility that the surface of the plate is scratched when the pressing wheel and the plate are relatively displaced, and thus the quality of the plate is not easily affected.

The application discloses a lawn mower system, which comprises a lawn mower and a base station; one of the lawn mower and the base station is provided with a charging connector, and the other of the lawn mower and the base station is provided with a charging pole; the charging connector has an extended position and a retracted position and can be switched between the extended position and the retracted position; the lawn mower system is configured to control the charging connector to be in the extended position when the lawn mower and the base station are in a docking state, so that the charging connector is docked with the charging pole and the lawn mower is charged by the base station; after the charging is completed, the charging connector can be controlled to be switched to the retracted position. With the design, the charging connector is less likely to be scratched with the shell of the lawn mower, and the probability of deformation and damage of the charging connector is reduced, so that the reliability and durability of the lawn mower system are improved.

The invention discloses a conveying device and a conveying system.The conveying device comprises a solid tray conveying assembly, an empty tray conveying assembly, a first conveying assembly, a second conveying assembly and a first push-pull assembly, and the empty tray conveying assembly is arranged on the lower side of the solid tray conveying assembly; the first conveying assembly has a first state in butt joint with the solid tray conveying assembly and a second state in butt joint with the empty tray conveying assembly, the first push-pull assembly is arranged on the lower side of the empty tray conveying assembly and can reciprocate in the conveying direction of the empty tray conveying assembly, and the conveying device is configured to respond to the first conveying assembly to be switched to the second state. In the second state, the first conveying assembly and the empty tray conveying assembly are arranged in a staggered mode in the conveying direction of the empty tray conveying assembly, and the first push-pull assembly can drive the empty trays on the first conveying assembly to the empty tray conveying assembly. The conveying device can improve the overall logistics efficiency and the automation level, and manual intervention can be reduced.

The utility model discloses a kind of double-center drive measuring devices based on auxiliary contact type drive, including double-center drive positioning mechanism and auxiliary contact type drive mechanism.Auxiliary contact type drive mechanism includes mechanical moving component, mechanical moving component right side is equipped with moving component connecting block, mechanical moving component drive moving component connecting block is along transverse movement, moving component connecting block bottom is connected with the connecting piece along transverse arrangement;Connecting piece bottom is connected with the top of connecting rod, the bottom of connecting rod is connected with the right end of connecting plate.Auxiliary contact drive motor is mounted on the left end of connecting plate, elastic contact component support is equipped in the left end of connecting plate, and elastic contact component support is sleeved with elastic contact component.Auxiliary contact drive motor output shaft passes through connecting plate and drives elastic contact component support to make elastic contact component rotate.The device in the utility model can make the measured workpiece stable rotation when measuring, improve the accuracy and efficiency of measurement.

The invention relates to a titanium earphone, the liquid titanium earphone comprises a sound production part, a fixing part and a connecting part, the sound production part is arranged in the conchae of a wearer, the fixing part is attached to the back side of the ear of the wearer, the sound production part and the fixing part are connected to the two ends of the connecting part respectively, the connecting part is made of a titanium material, and the connecting part is made of a titanium material. Therefore, the overall weight of the titanium earphone is reduced, a wearer does not feel heavy when wearing the titanium earphone, and the titanium earphone is more comfortable to wear and suitable for long-time wearing.

A pumping device for dewatering foundation pits includes a fixed base at the top of the pit, a support frame and a first support on the fixed base, an inclined support rod on the first support, a fixed pulley at the end of the support rod, a rope sheave mounted on the support frame, and a rope sheave axle connected to the output shaft of a servo motor on the outside of the support frame. A pull rope is wound around the rope sheave, with its free end passing over the fixed pulley and connected to a pump. The pump is located inside the pit, and its outlet end has a water outlet pipe extending out of the pit to drain water. The pull rope is wound and extended by the servo motor to adjust the distance the pump extends into the pit. The distance between the pump and the inner wall of the pit is controlled by the swing angle of the support rod, thus preventing the pump from scraping against the ground during its lifting and lowering within the pit. A filter is installed at the inlet of the pump to prevent debris from entering the pump and causing malfunctions.

This application discloses a modular seating backrest, including a back cushion unit and a lumbar cushion unit. The bottom of the back cushion unit has a stepped transition, and the back cushion unit includes a downwardly extending splicing portion, with a splicing groove formed at an inwardly recessed position relative to the splicing portion. The top of the lumbar cushion unit also has a stepped transition, and the lumbar cushion unit includes an upwardly extending mounting portion, with a mounting groove formed at an inwardly recessed position relative to the mounting portion. When the back cushion unit and the lumbar cushion unit are combined, the splicing portion fills the mounting groove, and the mounting portion fills the splicing groove. The splicing portion and the mounting portion are connected front to back, and are detachably connected by a quick-release structure. The modular seating backrest provided by this application, by setting the bottom of the back cushion unit and the top of the lumbar cushion unit as a stepped structure, not only makes the two fit more tightly and has higher connection strength, but also has a simple structure and low processing and manufacturing costs; furthermore, after packaging, the splicing portion and the mounting portion will not protrude outwards, ensuring packaging quality.

The utility model provides a device of preventing weft wire pay-off jam, including metal ring, the outside of metal ring is the smooth surface of arc, the one end of metal ring inside is provided with the baffle ring, forms the annular clamping groove between baffle ring and metal ring, the opening end of annular clamping groove is towards the other end of metal ring, and the outside of weft wire cylinder end portion is sleeved in metal ring, and the end portion of weft wire cylinder is clamped in annular clamping groove. The utility model prevents weft wire pay-off when, and weft wire contacts the smooth surface of metal ring outside, and this smooth surface is not easy to be scratched, thereby avoiding the emergence jam.

The utility model belongs to the technical field of bags and suitcases, and particularly relates to a flyknit handbag which comprises a bag body, metal wires, lamp beads, a push-pull type electromagnet, a communication module and a positioning module. A metal wire which is high in fatigue resistance and not prone to deformation is arranged on the inner side of the bag body, the metal wires are distributed in a criss-cross mode at intervals and play a role in shaping and burglary prevention of the bag body, the surfaces of the metal wires are subjected to coating treatment, lamp beads are arranged at intervals, and a lamp bead system is provided with a sensor and is in linkage with a bag body lock catch. And the lamp bead is automatically lightened for illumination. And the push-pull electromagnet is matched with the matching block, is provided with a switch and is linked with the communication module. Through the arrangement of the components, the supporting performance of the flyknit handbag is improved, the appearance is more attractive, the safety of the handbag is improved, meanwhile, the handbag is more convenient and rapid in the using process through intelligent lighting and a convenient unlocking mode, and the requirements of modern consumers for the functionality and practicability of luggage products are fully met.

The utility model discloses a portable UPS (Uninterrupted Power Supply) maintenance toolbox, which relates to the technical field of toolboxes, and comprises two hinged half box bodies, a handle and a connecting buckle are arranged on the half box bodies far away from the hinged end parts, partition plates are arranged on the inner sides of the two half box bodies, the partition plates horizontally divide the inner sides of the half box bodies into a plurality of independent placing grooves, and the two independent placing grooves are connected with the handle and the connecting buckle. Limiting baffles are arranged at box openings of the two half box bodies and attached to the partition plates, and clamping assemblies are arranged between the limiting baffles and the half box bodies. Through the arrangement of the two half box bodies, the placing area of tools can be increased, more tools can be conveniently placed, through the matched arrangement of the limiting baffles and the clamping assemblies, the limiting baffles can be fixed to the box openings of the half box bodies through the clamping assemblies, and when the tool box is used, no matter whether one half box body is placed downwards or not, the tool box is convenient to use. And the situation that tools are scattered when the other upward half box body is opened can be avoided.

The embodiment of the utility model discloses a battery monomer, a battery device and a power utilization device. The battery monomer comprises a shell, a first electrode assembly and a supporting wall, the first electrode assembly is housed within the housing. The supporting wall is arranged opposite to the surface, with the largest surface area, of the first electrode assembly, the supporting wall comprises two sub-walls and a supporting structure, the two sub-walls are oppositely arranged in the first direction, and the supporting structure is connected with the two sub-walls. The supporting structure is obliquely arranged relative to the two sub-walls, and the supporting wall is compressed under the condition that the pressure borne by the supporting wall is larger than or equal to a first threshold value, so that the first electrode assembly can be bound when the expansive force of the first electrode assembly is small, and an expansion space is provided for the first electrode assembly when the expansive force of the first electrode assembly is large; and the reliability of the whole cycle of the battery monomer can be improved.

The present application relates to a kind of suspension grinding aids and its preparation method and application.The suspension grinding aid is composed of the following mass fraction of components: abrasive 10-50%, suspension dispersing agent 0.01-15%, organic base 1-20%, lubricant 1-30%, surface wetting agent 0.1-10%, and the balance is water.The suspension grinding aid is used for hard and brittle material thinning processing, which has high efficiency, less damage to hard and brittle material, can be reused multiple times, has long service life, and has wide application field.

The application relates to a secondary rolling plug for rolling non-ferrous metal seamless pipes and a rolling mill, a pipe-throwing section, a rounding section, a wall-reducing and uniformizing section, a compression and rotary rolling section, a contact biting section and a contact section are sequentially formed from right to left on the plug body, and the outer sides of the pipe-throwing section, the rounding section, the wall-reducing and uniformizing section, the compression and rotary rolling section, the contact biting section and the contact section are all rotary surfaces with the axis of the plug body as the axis. The surface shape of the plug body is designed, the surface of the non-ferrous metal pipe is not easily scratched, and the technical problems that the conventional three-roller rolling mill roll shape cannot realize biting and rotating, is stuck in rolling and smoothly throws the pipe when rolling the non-ferrous metal are solved.

The utility model belongs to the technical field of bridge construction, and particularly relates to a hydraulic jacking demolding device which comprises a jacking machine base, a supporting cross beam, a translation oil cylinder, a translation cross beam, a connecting supporting rod and a jacking oil cylinder. The jacking device is reasonable and compact in structure, a stable supporting foundation is provided through the jacking machine base, stable and accurate movement is guaranteed through cooperation of the supporting cross beam and the translation cross beam, the translation oil cylinder flexibly and accurately drives the translation cross beam to adjust the jacking position, and stable transmission of power is guaranteed through the connecting supporting rod; and finally, the jacking oil cylinder generates jacking force according to needs to complete demolding, so that the efficient, accurate and reliable jacking demolding function is achieved through cooperative work of all the components, the bridge deck slab can be synchronously separated from the mold during demolding, the bridge deck slab is not prone to colliding with the mold, damage to components is avoided, and the appearance quality of the components is guaranteed.

This utility model provides an outdoor portable aquatic DNA enrichment device, belonging to the technical field of aquatic DNA enrichment devices. The utility model includes a main body with a pump inside. A water inlet pipe is located on one side of the main body. A drain pipe is inserted into the top of the enrichment reagent kit. Two handles are fixedly connected to the top of the main body. A positioning device is provided on the outer surface of each handle. The positioning device includes a U-shaped rod, and a locking block is slidably connected to one end of the inner wall of the pressure rod. By setting the positioning device, after the drain pipe is connected to the top of the enrichment reagent kit, the end of the drain pipe near the enrichment reagent kit is wrapped around the outer surface of the pressure rod, and the pressure rod restricts the position of the drain pipe outside the pressure rod. This minimizes the risk of the drain pipe loosening and falling off at the end near the enrichment reagent kit during use, thus improving the stability of the enrichment device during operation.

The utility model provides a movable modular intelligent flexible feeding platform, and relates to the technical field of part feeding, the movable modular intelligent flexible feeding platform comprises a movable modular platform, the movable modular platform is provided with a robot body, and the movable modular platform is further provided with a flexible vibration disc and a feeder used in cooperation with the flexible vibration disc; the movable modular platform is further provided with a supporting structure, the supporting structure is provided with a visual inspection camera, the visual inspection camera is located above the flexible vibration disc, and the part, making contact with the part, of the flexible vibration disc is made of plastic. According to the feeding device, the flexible vibration disc is arranged, the part, making contact with a part, of the flexible vibration disc is made of a plastic material, the feeding device can adapt to lossless feeding of materials of different sizes and shapes, it is ensured that the materials are not prone to damage in the conveying process, and the problems of abrasion and scratching easily caused when precision parts are treated through a traditional rigid vibration disc are solved.

The interphone is simple in structure and capable of protecting a screen and comprises an interphone body and a base, the base is arranged on a platform in a vehicle through a fixing device, a fixing rod is fixedly arranged on the base, a square rod is arranged on the fixing rod in a sliding and penetrating mode, a fixing seat is arranged at the other end of the square rod, and the fixing seat is arranged on the base. The fixing seat is provided with a fixing groove, the interphone body is arranged in the fixing groove in a penetrating manner, the back part of the interphone body is provided with a camera for driving recording, and the front surface of the interphone body is provided with a screen for displaying pictures.

A method for preparing a binary formula for Dai pottery clay and its application is disclosed. The method involves taking Dai pottery clay from the Honghe River basin, five-colored clay from Honghe County, and charcoal powder. The Dai pottery clay and five-colored clay are sun-dried and weathered for at least three months. The Dai pottery clay from the Honghe River basin has a SiO2 content of not less than 50%, an Al2O3 content of not less than 15%, an Fe2O3 content of not less than 10%, and a loss on ignition of less than 10%. The five-colored clay from Honghe County has a SiO2 content of 72-82%, an Al2O3 content of 9-12%, and an Fe2O3 content of 3-5%. The method involves soaking the Dai pottery clay and five-colored clay in water until fully saturated, then ball-milling them. The slurry is sieved, and then charcoal powder is added. After stirring evenly, the clay is pressed to drain water and then kneaded to remove air. This invention can improve the throwing and molding performance of Dai pottery clay, increase the sintering temperature and the density and strength of its structure, and reduce the burn-off rate.

The invention provides a flat wire finished product line off-line auxiliary carrying vehicle, and relates to the technical field of transfer equipment, and the flat wire finished product line off-line auxiliary carrying vehicle comprises a vehicle body, a lifting mechanism and a supporting mechanism; the lifting mechanism is arranged on the vehicle body; the supporting mechanism is arranged on the lifting mechanism and driven by the lifting mechanism to ascend and descend. According to the off-line auxiliary carrying vehicle for the flat finished product line, the vehicle body, the lifting mechanism and the supporting mechanism are arranged, the finished product line is placed on the supporting mechanism, the lifting mechanism is used for driving the supporting mechanism to ascend and descend so as to drive the finished product line and the supporting mechanism to ascend and descend synchronously, and therefore manual work is replaced to take down the finished product line from the working table; in other words, manual operation on the finished wire is greatly reduced, the finished wire is not prone to causing flat wire distortion, scratching or deformation, and the quality is stable and reliable.

The application provides a battery pack bottom structure adhesive removal method and system, which comprises the following steps: checking and surface cleaning pretreatment are performed on a battery pack; the pretreated battery pack is placed in an irradiation shielding and positioning tool, and the bottom structure adhesive to be removed is directed to an electron beam irradiation side; the battery pack cell area is shielded by the irradiation shielding and positioning tool, and the corresponding area of the bottom structure adhesive is opened; the bottom structure adhesive profile is identified by visual scanning, and a scanning path is generated; the posture of the battery pack is adjusted to keep the adhesive layer parallel to the electron beam scanning plane; the bottom structure adhesive is irradiated along the scanning path; the radiation dose and the battery pack temperature are monitored in real time; the irradiation is stopped when the adhesive layer interface peeling strength is lower than a preset threshold and the adhesive layer is embrittled; the embrittled adhesive layer is peeled off, and the residual adhesive slag at the bottom of the battery pack is cleaned; and the battery pack after the adhesive removal is comprehensively detected. The battery pack bottom structure adhesive removal method provided by the application has good adhesive removal quality and high adhesive removal efficiency.

This invention claims protection for a method of manufacturing a personalized resin clip for the teeth. The key technical points include: Step 1, acid etching the area where the resin clip will be fixed to the teeth, followed by rinsing off the etching solution and drying the area; Step 2, applying a resin adhesive to the area where the resin clip will be fixed to the teeth, and curing it with a light-curing lamp to form a base; Step 3, applying a layer of flowing resin to the base, and placing a molding device on the flowing resin; Step 4, stacking the flowing resin on the molding device according to the desired shape; Step 5, curing the flowing resin with a light-curing lamp, removing the molding device, and obtaining the personalized resin clip for the teeth. The personalized resin clip produced by this invention has rounded edges, its shape can be adjusted according to needs, it is less likely to scratch areas of the mouth, it is more comfortable to use than existing lingual clips, and it is more convenient to fix the position on uneven tooth surfaces, with better adhesion and less tendency to fall off; at the same time, its shape is variable and its appearance is aesthetically pleasing.

The application relates to the technical field of cover plates, and discloses a silicon-based anodization-imitating cover plate and a manufacturing method thereof. The silicon-based anodization-imitating cover plate comprises, from inside to outside, a transparent substrate layer, a silicon-based multilayer film layer and a hole sealing layer. The transparent substrate layer has oppositely arranged first and second surfaces, the first surface directly contacts the silicon-based multilayer film layer and is provided with a plurality of hole structures; the silicon-based multilayer film layer is partially embedded in the hole structures; and the hole sealing layer is partially embedded in the hole structures covered by the silicon-based multilayer film layer to seal the hole structures. The cover plate product provided by the application realizes a matt metal luster comparable to metal anodization through the diffuse reflection effect of the porous structure and the light interference effect of the silicon-based multilayer film, the color level is rich, the color uniformity is good, and the differentiation requirement of high-end electronic equipment is met.

The utility model relates to the technical field of machine manufacturing, in particular to an embedded supporting anti-shake jig which comprises a wedge plate A, a wedge plate B and a wedge plate relative position adjusting mechanism. The wedge plate A is provided with an upper plane and an inclined plane A which are oppositely arranged, and the upper plane is used for making contact with the top face of an inner cavity of the cavity thin-wall part to provide supporting. The inclined wedge plate B is provided with a lower plane and an inclined plane B which are oppositely arranged; the lower plane is used for being in contact with the bottom surface of the inner cavity of the cavity thin-wall part to provide support; the slope of the inclined plane A is the same as that of the inclined plane B, and the inclined plane B is tightly attached to the inclined plane A; the wedge plate relative position adjusting mechanism is used for driving or limiting relative sliding between the wedge plate A and the wedge plate B so as to adjust the vertical distance between the upper plane and the lower plane. According to the embedded supporting anti-vibration jig, the cutter vibration phenomenon caused by weak rigidity of the part is remarkably reduced or eliminated, and the stability and precision of machining of the cavity thin-wall part are improved.

The utility model provides a coating diaphragm surface density testing device. The device is mainly composed of a workbench, a heating mechanism, a weighing balance and a three-axis manipulator. The heating mechanism comprises a heating platform and a fixing piece; the heating platform is located at the top of the workbench and horizontally and rotationally connected with the workbench, the fixing pieces are installed at the four corners of the top of the heating platform, and the movable ends of the fixing pieces move along the diagonal lines of the heating platform, make contact with the coating diaphragm and limit the coating diaphragm to the top of the heating platform. The weighing balance is placed at the top of the workbench and is positioned obliquely below the heating platform; the bottom projection of the heating platform in the inclined state is located in a weighing area of the weighing balance. The three-axis mechanical arm is installed on the top of the workbench, located above the heating platform and used for grabbing the wiping cloth and wiping the coating diaphragm limited on the top of the heating platform in a constant force mode. According to the utility model, the coating diaphragm is uniformly wiped by a machine, so that the diaphragm is not easy to break and wrinkle, and the stress concentration phenomenon caused by manual operation is effectively eliminated.

The utility model discloses a fixing jig for tiny devices, which comprises a fixed base and a movable base, the movable base is provided with a plurality of matching grooves, the fixed base is provided with bosses corresponding to the matching grooves, and the top surface of each boss is provided with a residue-free adhesive layer. The tool is simple in structure and convenient to operate, solves the problems that a small-size device fixing tool is difficult to design, the surface of a product is easily damaged when the tool clamps the product, and the tool interferes with assembly, and is simple to operate and high in efficiency when the device is taken down from the tool, and the surface of the device is not prone to being scratched.

The utility model discloses a kind of windproof and moisture-retention maintenance pads for building concrete, including maintenance pad main body, the inside of maintenance pad main body is installed with support pad, and support pad is uniformly provided with recess on it, the bottom of recess is uniformly provided with small hole, the inside of maintenance pad main body below support pad is filled with sponge layer, the bottom of maintenance pad main body is uniformly provided with through-hole, the top of maintenance pad main body is uniformly installed with convex column, and the side of convex column is uniformly provided with semicircular groove, the side of semicircular groove is uniformly provided with fixed mechanism. The utility model is by with water evenly sprinkled on the surface of maintenance pad main body, water will flow to the recess on support pad, and is absorbed by sponge layer by small hole downward permeation, and then flow to the surface of building concrete by through-hole, provide moisture for concrete, and simultaneously, the moisture absorbed by sponge layer can keep certain temperature on the surface of concrete.