52results about How to "Adjust the size arbitrarily" patented technology

The invention aims to provide a pigsty with a driving device. The pigsty with the driving device comprises a horizontal fixed fence piece (1), a driving fence piece (2), a lengthways fence piece (3), a horizontal movable fence piece (4), a motor and a wire rope, and is characterized in that the horizontal fixed fence piece (1) is provided with a horizontal fixed fence piece beam (1-1) and a horizontal fixed fence piece brace (1-2), a driving fence piece beam (2-1) on the lower portion of the driving fence piece (2) is provided with a driving fence piece lower pulley support (2-5) and a driving fence piece lower pulley (2-6), and a lengthways fence piece beam (3-1) on the lower portion of the lengthways fence piece (3) is provided with a lengthways fence piece lower end (3-5) and a lengthways fence piece sliding rail (3-6). The pigsty with the driving device solves the problems that driving is difficult and time-consuming in the process of changing pig groups at present.

The invention relates to a miniature pre-stress anchorage cable used in the model experiment. The miniature pre-stress anchorage cable comprises an adjusting bolt and a steel stranded wire, wherein the nut of the adjusting bolt is fixed on the side wall of the cavity, the bolt is screwed into the nut, the bolt and the nut are adopted as the anchorage cable head, the steel stranded wire is penetrated through the bolt, and fixed on the bolt head through a slice, and the other end of the steel stranded wire is connected with a spring arranged in the inner anchorage section in the model. The invention also discloses a burying and loading method for the miniature pre-stress anchorage cable. The invention has the advantages: firstly, through the changing of the length of the steel stranded wire and the spring, the size of the model pre-stress anchorage cable can be arbitrarily adjusted, to satisfy the model experiment similarity ratio requirements; secondly, through the choosing of the spring stiffness, the pre-stress scope of the model pre-stress anchorage cable can be controlled, to satisfy the model experiment requirements; thirdly, the adjusting and controlling of the model anchorage cable pre-stress is convenient and accurate, and the miniature pre-stress anchorage cable can be used under the severer working condition; fourthly, the miniature pre-stress anchorage cable can be applied in the rock geomechanic model experiment research in the project fields of water conservancy, traffic, energy resources and mines, etc.

The invention provides a testing device for a functional characteristic test of a valve. The testing device is composed of a vibration table, a vibration rack, a bending moment loading frame and a test connecting piece, wherein the bending moment loading frame and the valve to be tested are fixedly installed on the vibration rack which is fixedly installed on the vibration table, and the bending moment loading frame comprises a bending moment framework, a loading joint, a lead screw, a lead screw connector and a force sensor. Due to the arrangement of the vibration rack, the vibration table can not bear transverse loads or lateral loads in the working process, and stability and accuracy of the test are ensured. The bending moment loading frame is adopted, bending moment is produced on the loading joint through the lead screw and the lead screw connector, bending moment loading in the needed direction is achieved, and the bending moment loads can be adjusted optionally. Due to the arrangement of a belleville spring, the problems that due to the fact that rigidity of a valve testing piece is large, and if the lead screw is directly rotated, when the bending moment is loaded to a designated value, the lead screw connector only has a very small displacement so that the lead screw cannot be fixed, and simulation on test environment distorts can be avoided.

The invention discloses a Ti-Nb-O high damping titanium alloy and a powder metallurgy preparation method of the Ti-Nb-O high damping titanium alloy. The alloy comprises the following elements in percentage by atoms: 25 percent of Nb, 1.5 percent of O and the balance of Ti. The alloy is a metastable beta type high damping titanium alloy and is prepared by adopting the powder metallurgy method; and the high damping titanium alloy with excellent damping performance and mechanical property is obtained by adopting a ball milling, cold pressing and sintering method and regulating a powder metallurgy technology. The high damping titanium alloy can be used at the temperature between 200 and 350 DEG C, has the advantages of high damping value, high mechanical property and the like, and can be developed and used in a method for preparing high damping materials.

The invention discloses a portable engineering BIM model projection device and method based on augmented reality, and relates to the technical field of augmented reality. The device comprises an imagecollector for obtaining a two-dimensional image, a central processor, and a memory, wherein the two-dimensional image comprises a paper two-dimensional engineering drawing or a two-dimensional code and is used for receiving the two-dimensional image pushed by the image collector, generating an image matching code according to the two-dimensional image, and pushing the image matching code to a background server through a network interface and the Internet; the background server stores the comparison drawings, and the comparison drawings and the image matching codes have a one-to-one corresponding mapping relation; the background server pushes the corresponding BIM model to a memory through the Internet and a network interface; the memory pushes the BIM model to the central processing unit;and the central processing unit pushes the BIM model to the micro projector. According to the present invention, the BIM building information model technology, the AR technology and the projection technology are combined, so that the problem of BIM model image sharing is solved.

The invention relates to a method for fabric co-mixed combination printing by using pearl nanoparticles in industrial textile production. A printing paste selected by the method contains pearl nanoparticels (mean diameter 100 nm) 10 to 20 g / l, coating 0 to 40 g / l, acrylate resin binding agent 80 to 120 g / l, penetrant JFC 5-7 g / l, thickening agent M 20 to 25 g / l, dispersant NNO 10 to 15 g / l, urea 15 to 18 g / l and peregal O 20 to 30 g / l. The co-mixed combination printing process comprises the steps of refining cloth, printing, pre-baking at 75 to 85 DEG C for 3 to 5 min and baking at 140 to 160 DEG C for 1 to 1.5 min, wherein the warp yarn and the weft yarn of the finish fabric have a fineness less than 27.8 tex, and the warp and the weft densities are larger than 425*228 piece / 10cm. The invention has the advantages of simple process, suitability for various fabric textile, co-mixture of pearl particles and printing paste, no additional finishing procedures, controllable size and distribution of pearl particle coating layer, less material consumption and low cost.

A multifunctional universal object clamping device mainly comprises a handle mechanism, a clamping mechanism and chuck positioning mechanisms. A handle is horizontally arranged and penetrates a slide block to be connected with a pull ring. A first pull rod and a second pull rod are connected to the left side of the slide block through hinges. A second expansion ring and a second clamping rod are arranged at the other end of the second pull rod. A first expansion ring and a first clamping rod are arranged at the other end of the first pull rod. The handle is connected with the first clamping rod and the second clamping rod through hinges. The first clamping rod obliquely penetrates a transverse groove. The first clamping rod and the second clamping rod are each provided with the corresponding chuck positioning mechanism, wherein the chuck positioning mechanisms are the same. Each chuck positioning plate is circumferentially and evenly provided with 7 positioning pin holes. Clamping rod connection pieces are connected with the chuck positioning plates through hinges. The left ends of chuck positioning pins penetrate through holes of the clamping rod connection pieces. A thin rope is fixed to the right end face of each chuck positioning pin. The other end of each thin rope is fixedly arranged on the bottom face of a pull button. One end of each chuck connection piece is connected with the corresponding chuck positioning plate, and the other end of each chuck connection piece is connected with a chuck. By means of the multifunctional universal object clamping device, the chucks can rotate by any angle, and the opening sizes of the chucks can be freely regulated.

The invention relates to a double-head saw used in cutting, which comprises machine base, control tank, work platform on the machine base, wherein the platform has blank mould and gas top for fixing the work piece; the platform is fixed with cutting saw for cutting work piece, the control top for controlling the cutting, feeding gas top; the cutting saw comprises the first cutting saw at the left of platform and the second cutting saw at the right of platform; the control top and the first cutting saw have connecting rod between to control the cutting strike; the first and second cutting saws are connected with transmission rod, while they are connected to the control tank; the first and second cutting saws can cut two ends at one time, to confirm the flatness. The invention can improve the quality with uniform welding.

The invention discloses a water feeder for poultry and livestock. The water feeder comprises a water tank and a watering trough, wherein, a floating plug is placed in the watering trough and arranged in a vertically-oriented plug floating guide chamber; a water inlet which is blocked by the floating plug when the floating plug rises to a set position is formed on the floating guide chamber and is communicated with an water outlet of the water tank; a protective shelter is mounted on the watering trough; and a water drawing opening is formed between the protective shelter and the watering trough. Compared with the prior art, the water feeder provided by the invention can solve the problem that a conventional water feeder for live stock can not guarantee the cleanness of water for a long time and is not convenient when water is accommodated.

Provided is an electrical wire pipe threading and wire-leading apparatus. The apparatus comprises a rod member, a groove member, a rubber sheet, a T-shaped support, a tape wire, and a dust collector, one end of the groove member is open, the other end and side surfaces of the groove member are closed, the middle position of the closed end is provided with an open hole, one end of the rod member is welded at the side surface of the groove member, a vertical rod of the T-shaped support is sleeved by the tape wire, and a rope head of the tape wire penetrates through the open hole at the closed end of the groove member and an opening of the rubber sheet. A threading and wire-leading method of the electrical wire pipe threading and wire-leading apparatus includes: forming a closed space in an electrical wire pipe through the rubber sheet at an inlet end of the electrical wire pipe and an air suction hose at an outlet end; sucking the tape wire at the inlet end of the electrical wire pipe into the outlet end of the electrical wire pipe by employing the suction of the dust collector, wherein the air suction hose of the dust collector is arranged at the outlet end of the electrical wire pipe; and accomplishing the threading operation in the electrical wire pipe through pulling of the tape wire at the outlet end of the electrical wire pipe. According to the apparatus and the method, problems of long time consumption and low efficiency of the threading operation in concealed laying of the electrical wire pipe are solved, the construction cost is reduced, the work efficiency is improved, and the apparatus and the method are applicable to various construction environments.

The invention discloses a warning triangle. The warning triangle comprises a center plate and three steel ropes; three long guide columns are uniformly and circumferentially arranged on the center plate at intervals, a guide wheel is arranged at one end of each long guide column, coil springs are arranged at the rotating portions of the guide wheels and the long guide columns, and a coil wheel rotates on the center plate; one end of each steel rope is arranged on the corresponding guide wheel, the other end of each steel rope is arranged in a wire groove formed in the coil wheel, the long guide columns are slidably provided with stop blocks which are fixedly arranged on the corresponding steel ropes, and a warning panel with the ductility is tensioned among the stop blocks; the center plate is further provided with a locking device for locking the coil wheel. According to the warning triangle, the size of the warning triangle surface can be adjusted at will according to actual demand, and therefore the size of the warning triangle surface of the warning triangle can be set at will according to the actual weather conditions.

The invention provides a remote control device and method, and an electronic device. The remote control device comprises a first display unit, and further comprises a redrawing unit and an instruction unit; the redrawing unit is suitable for receiving control information of an interactive control in a current display frame in a second display unit of an electronic device, and providing coordinates of the control to the first display unit according to the control information, so as to draw the interactive control on the first display unit; the instruction unit is used for generating operational instructions according to user's operations acting on the first display unit. On one hand, the technical scheme provided by the invention greatly reduces the data transmission quantity, and saves the network bandwidth occupation, and on the other hand, a user can arbitrarily adjust the size of the interactive control displayed in the remote control device without influencing display pictures in the electronic device, so that the user's experience is improved.

The invention relates to a method for testing absorption energy of ore by using drop hammer impact. The method comprises the following steps of establishing a physical model for impacting ore by a drop hammer, wherein the drop hammer freely falls to impact a test piece, a part of impact energy is converted into absorption energy of the test piece, a part of energy is transmitted to the base and islost in downwardly moved kinetic of the base, and a part of energy is lost in rebounding kinetic energy of a hammer head when the hammer head rebounds after impact; converting the kinetic energy andthe gravity working of the base into the deformation energy of a spring, and calculating lost energy of the base by monitoring the movement displacement of the base by combining an elastic coefficientof the spring; calculating the lost energy of the hammer head by monitoring the initial speed of the rebounding of the hammer head, and then obtaining the absorption energy of the ore through an energy conservation principle. Through the method disclosed by the invention, the absorption energy of the ore in any shape in the crushing can be tested, the applicable ore size range is wide, and the theoretical relation of the ore crushing energy and the granularity established by using the method more meets an actual condition of the mechanical crushing, the crushing process is favorably guided toimprove, the energy utilization efficiency is improved, and the crushing energy consumption is reduced.

An electric size push -knife component, including a frame (1), a base (2) inside the frame, a blade (3) in the base, the blade is installed inside the base.Embeds into the inside of the frame; setting a movement orbit (4) below the base can be convenient for the blade to launch the movement of the random size on the orbit; set the promotion module behind the base (5), which can launch or retract the blade during operation to return or shrink back to the blade.Specify the size; set the setting panel (6) on the surface of the frame, you can set the blade to launch or shrink back to the size; set the battery (7) inside the frame to provide the power supply for pushing the knife component; you can set it by yourself.The size of the blade is more convenient and practical to use the blade. The design is reasonable and simple to replace the new blade at will.

The invention relates to a high-reliability anti-shock small-sized YAG laser. The laser comprises a shell, an upper cover and a laser cavity, wherein the laser cavity is a cylinder and is positioned in the shell; the laser cavity comprises a barrel body, a laser crystal rod, a xenon lamp, a rod sleeve, a rod support, a cavity mirror, an outer mirror frame and a wire outlet hole; the laser crystalrod is located on the center line of the laser cavity barrel body; the rod support, the cavity mirror and the outer mirror frame are arranged from the central point of the laser cavity barrel body tothe two ports in the two ends of the barrel body in sequence; the xenon lamp is connected with a trigger circuit located on the other side of an inner partition layer of the shell; and the trigger circuit is electrically connected with the power supply. When the laser cavity is designed, high acceleration vibration and impact stability brought by small size and portability are taken into consideration, the overall mechanical properties of the laser cavity, the internal reflection cavity and other fixed features are directly made into a whole, so that the shortcomings of frangibility and easy secondary damage caused by the traditional external cavity type, cavity and shell separation, and a condition that inner reflection adopts a glass substrate mirror surface reflection cavity can be avoided; and by reducing the size, the reliability of the laser, and the stability and weather resistance of the system are greatly improved.

The invention relates to the technical field of medicine storage equipment, in particular to a western medicine storage rack for the hospital pharmacy. The western medicine storage rack for the hospital pharmacy comprises a U-shaped frame, a plurality of supporting grooves are formed in the opposite faces of the inner face of the U-shaped frame from outside to inside. The multiple supporting grooves are formed in a bilateral symmetry mode. The supporting grooves on the left and right sides cooperate with each other in pairs. The supporting grooves penetrate through the front side face of the U-shaped frame, supporting plates are inserted into the supporting grooves, sliding grooves are formed in the front side faces and the rear side faces of the supporting plates from outside to inside, the left ends and the right ends of the sliding grooves penetrate out of the supporting plates, water grooves are formed in the supporting plates, and the sliding grooves are jointly in sliding fit with adjusting assemblies; according to the invention, the size of a medicine storage area of the storage rack can be adjusted at will, the medicine vacancy position can be automatically adjusted, and the storage rack can provide a shady and cool environment for medicine.

The invention discloses a full-automatic punching machine of an LED lamp tube. The full-automatic punching machine comprises a machine table, a feeding hopper, a feeding assembly, a punching assembly,an overturning assembly and a discharging hopper, wherein the feeding hopper, the feeding assembly, the punching assembly, the overturning assembly and the discharging hopper are arranged on the machine table. The two sides of the middle of the machine table are respectively provided with a fixed machine frame and a movable machine frame, and a carrying mechanism is arranged between the fixed machine frame and the movable machine frame; the punching assembly comprises a first punching die and a second punching die, the overturning assembly is arranged between the first punching die and the second punching die, and a pipe middle punching assembly is arranged between the first punching die and the overturning assembly; and the pipe middle punching assembly is arranged above the carrying mechanism, and the feeding assembly, the first punching die, the overturning assembly, the second punching die and the discharging hopper are sequentially arranged on the fixed machine frame and the movable machine frame. The full-automatic punching machine is suitable for automatic punching processing of the LED lamp tubes of different types, energy-saving, convenient to maintain, simple in structure, high in automation degree and wide in applicability.

The invention discloses an automatic-adjustment air hammer which comprises a hammer body, a hammer core, a hammer core collision block, a hammer head and a hammer body end cover. The hammer head and the hammer body end cover are fixedly arranged at the two ends of the hammer body respectively, the hammer core is arranged in the hammer body in a sliding mode, and the hammer core collision block is fixed to one end of the hammer core. An air inlet, a first exhaust port and a second exhaust port are formed in the outer wall of the hammer body, a first annular groove connected with the air inlet, a second annular groove communicated with the first exhaust port and a third annular groove communicated with the second exhaust port are formed in the inner wall of the hammer body, a first airflow hole is formed in one end of the hammer core, a second airflow hole is formed in the other end of the hammer core and the first airflow hole and the second air flow hole are alternately communicated with the air inlet in the process of realizing movement of the hammer core. The automatic-adjustment air hammer is simple and reasonable in structure, continuous impact force can be obtained simply by leading airflow with pressure into the hammer body, and therefore the automatic-adjustment air hammer is higher in reliability and more convenient to use.

The invention discloses a walking robot for pipeline gas detection, and relates to the technical field of gas detection. The walking robot comprises a supporting assembly and a walking assembly, wherein the supporting assembly is composed of a plurality of annular supports arranged at equal intervals; a plurality of mounting seats are uniformly fixed on the annular supports; the corresponding mounting seats on the two adjacent annular supports are connected and fixed through connecting rods; each connecting rod is slidably sleeved with a sliding block; a second hinged support is arranged on the upper surface of the sliding block; the connecting rod is sleeved with a spring; the walking assembly comprises supporting legs and supporting rods; one end of each supporting leg is hinged to the mounting seat; and a rolling wheel is rotationally mounted at the other end of the supporting leg. The supporting rods are pushed through elastic force of the springs to support the supporting legs, the rolling wheels on the supporting legs are tightly attached to the inner wall of the pipeline, the rolling wheels are controlled by a motor to enable the walking robot to walk in the pipeline, the gas concentration in the pipeline is detected through an infrared methane sensor, the size of the robot can be freely adjusted according to the diameter of the pipeline, and water accumulation and obstacles in the pipeline are prevented from influencing the advancing of the robot.

The invention discloses a fitting of a sewing machine, and particularly relates to a cloth pressing frame. The cloth pressing frame comprises a rectangular frame arranged laterally, wherein the framecomprises four corner frames and four fixing plates, the frames and the fixing plates are connected together, each corner frame comprises two strip-shaped corner plates which are connected together and are perpendicular to each other, each corner plate is slidably connected with the corresponding fixing plate, each fixing plate connects the two corresponding adjacent corner plates together, and the adjacent corner plates and fixing plates are detachably connected. The novel cloth pressing frame with adjustable specifications and a firm structure achieves that one cloth pressing frame adapts tovarious product specifications, thereby improving the cloth sewing quality of the sewing machine.

The invention discloses an elliptic grinding wheel finishing machine and a finishing method. The machine comprises a main frame; the main frame is slidingly provided with a base; a first rotating shaft is arranged in the base; the left end of the first rotating shaft is connected with a swing arm; the end part of the swing arm is connected with a finishing pen; upper and lower slide blocks are slidingly arranged at the right end of the main frame, penetrate through a fixed groove in the main frame, and are provided with a second rotating shaft inside; the right end of the second rotating shaft is fixedly connected with a hand wheel; the left end of the second rotating shaft is movably connected with an adjusting block; a zeroing block is arranged at the lower part of the adjusting block; and the adjusting block is connected with the first rotating shaft. The machine is convenient to adjust and operate, can randomly adjust the ellipse size to guarantee finishing of elliptic grinding wheels with any sizes, is high in finishing size precision, and is low in cost investment; and the machine is combined with a forming grinding machine, widens the application range of the forming grinding machine, and is higher in market value.

The invention relates to an adjustable steel pipe scaffold. The adjustable steel pipe scaffold comprises a vertical rod and a cross rod, wherein the vertical rod is composed of a plurality of verticalrod unit pieces, and the cross rod is composed of a plurality of cross rod unit pieces. Each vertical rod unit piece comprises an upper half rod body and a lower half rod body, and the lower half rodbodies can be rightly inserted firmly in the upper half rod bodies. Disc buckles are arranged at the upper end and the lower end of each upper half rod body in a sleeving mode correspondingly, a plurality of mounting holes are evenly distributed in each disc buckle, each cross rod unit piece comprises a first end rod body, a middle rod body and a second end rod body which are sequentially connected in an inserted mode, each middle rod body at least comprises a connection rod body, each connection rod body comprises a first connection section and a second connection section, one end of each first end rod body is fixedly connected with a screw rod, each first connection section is rightly inserted firmly in the corresponding first end rod body, each second end rod body comprises an inserting section and a fixed section, each fixed section is fixedly connected with a screw rod, and each inserting section is rightly inserted firmly in the corresponding second connection section. The adjustable steel pipe scaffold is convenient to mount, dismount and transport, and wide in application range.

Provided is an electrical wire pipe threading and wire-leading apparatus. The apparatus comprises a rod member, a groove member, a rubber sheet, a T-shaped support, a tape wire, and a dust collector, one end of the groove member is open, the other end and side surfaces of the groove member are closed, the middle position of the closed end is provided with an open hole, one end of the rod member is welded at the side surface of the groove member, a vertical rod of the T-shaped support is sleeved by the tape wire, and a rope head of the tape wire penetrates through the open hole at the closed end of the groove member and an opening of the rubber sheet. A threading and wire-leading method of the electrical wire pipe threading and wire-leading apparatus includes: forming a closed space in an electrical wire pipe through the rubber sheet at an inlet end of the electrical wire pipe and an air suction hose at an outlet end; sucking the tape wire at the inlet end of the electrical wire pipe into the outlet end of the electrical wire pipe by employing the suction of the dust collector, wherein the air suction hose of the dust collector is arranged at the outlet end of the electrical wire pipe; and accomplishing the threading operation in the electrical wire pipe through pulling of the tape wire at the outlet end of the electrical wire pipe. According to the apparatus and the method, problems of long time consumption and low efficiency of the threading operation in concealed laying of the electrical wire pipe are solved, the construction cost is reduced, the work efficiency is improved, and the apparatus and the method are applicable to various construction environments.

The invention provides a bottom bracket of a low-voltage power distribution cabinet. The bottom bracket comprises a fixing base and a bottom plate. The bottom plate is fixedly connected onto the fixing base, four end surfaces of the fixing base are of double-layer structures, slide ends are respectively arranged on the four end surfaces of the fixing base and can freely slide on clamp grooves, a plurality of buckles are arranged on the clamp grooves and are used for fixing the slide ends, four mounting side beams which correspond to one another and are perpendicular to the bottom plate are arranged on the surface of the bottom plate, and four mounting holes which are used for being connected with the bottom of the low-voltage power distribution cabinet are respectively formed in two ends of each mounting side beam. The bottom bracket of the low-voltage power distribution cabinet has the advantages that the slide ends and the buckles are arranged on the base of the bottom bracket, the clamp grooves are formed in the base of the bottom bracket, accordingly, the dimensions of the bottom bracket can be voluntarily adjusted, and the bottom bracket is applicable to cabinet bodies with different sizes; steel channels are replaced by cold-rolled steel plates, accordingly, the bottom bracket is high in dimensional precision, convenient to machine and transport and low in cost and is attractive, and the product quality and the work efficiency can be improved.

The invention discloses an improved cold reducing die for precisely-forged channels of a bell housing, and relates to the field of dies. The improved cold reducing die for the precisely-forged channels of the bell housing is based on the metal flow formation rule and is used for forgings through the warm forging and cold forging combined plastic forming technique. The improved cold reducing die for the precisely-forged channels of the bell housing comprises a finishing punch, wherein a base and a punch main body of the finishing punch are of an integrated structure. The upper end of the finishing punch is evenly divided into six petals, and the depth of each cutting groove is half to five sixths the overall height of the finishing punch. The improved cold reducing die for the precisely-forged channels of the bell housing has the following advantages that the finishing punch is integrated and thus is better than a split type finishing punch; after a mandrel is ejected to the working position, the punch does not warp, and the mandrel can be tightly wrapped with the punch; in the working process, the six petals of the punch do not deviate, the location degree is good, and thus it is guaranteed that the six channels of an inner cavity are evenly distributed after finishing is completed; the diameters of the channels of the inner cavity can be controlled easily, and the size can be adjusted freely within a certain range; the machining difficulty of the die is lower than that of the die of the split type structure, and the precision can be guaranteed more easily; and the die is easy and convenient to assemble and easy to operate and adjust.

The invention discloses an oil-stain-resistant kitchen wallpaper that can be pasted at will. It includes a bottom plate. Adhesive grooves are formed on the four corners of the outer wall of one side of the bottom plate, and a pushing structure is placed on the inner wall of the bonding groove. The pushing mechanism includes two One adhesive layer, two support plates and a push frame, and the push frame is a C-shaped structure, the outer walls on one side of the two support plates are fixed on the outer wall of the push frame by screws, and the two adhesive layers are respectively bonded on On the outer wall of the side of the two support plates away from the push frame, through holes are opened at the four corners of the outer wall of the side of the bottom plate. The invention can push the sticking through the push rod, and can be pulled and disassembled at the same time, and can be pasted at will. By using the L-shaped slide plate, the size of the non-stick plate can be adjusted arbitrarily, which increases the application range of the wallpaper. The oil box cooperates to push the oil accumulated on the non-stick plate into the oil collection box, which improves the portability of cleaning.

The invention relates to the technical field of bushing plate surface spraying auxiliary equipment, in particular to a portable spraying protection device. The portable spraying protection device aimsto solve the problems that in the prior art, bushing plates are various in specification and size, and the tool cost is high. The portable spraying protection device is characterized by comprising afirst main plate, a second main plate, a third main plate and a fourth main plate, wherein the fourth main plate is located at the bottom, the third main plate is located at the top, the first main plate and the fourth main plate are arranged in an attached mode, the second main plate and the third main plate are arranged in an attached mode, the first main plate is arranged in a sliding mode in the length direction of the fourth main plate, the third main plate is arranged in a sliding mode in the length direction of the second main plate, the second main plate is arranged in a sliding mode in the width direction of the first main plate, the four main plates are arranged in an attached mode, moreover, the sizes of the four main plates are gradually reduced from bottom to top, and fixing devices are arranged between the adjacent main plates respectively. Compared with an original scheme, the number of tools is reduced, the management is facilitated, and the cost of tool clamps is further reduced.