41results about How to "Accurate installation" patented technology

The invention discloses an outer wall insulation board installation mechanism which comprises a car body and wheels. The upper surface of the car body is fixedly connected with two symmetrically arranged first supporting rods; a placement plate is arranged between the two first supporting rods; an adjustment mechanism is arranged at the bottom of the placement plate; the upper surface of the placement plate is fixedly connected with two symmetrically arranged second supporting rods; a clamping mechanism is arranged between the two second supporting rods; and a limiting mechanism is arranged onone side of the wheels. The operation is convenient, the outer wall insulation board is convenient to install, and the problems of high danger and safety impact to workers due to the fact that when the outer wall insulation board is installed, workers need to stand on a lift and hold the insulation board for the installation are avoided; and meanwhile, movement of the installation mechanism is effectively limited; and the problems of unstable placement and influenced installation efficiency and installation quality during moving the installation mechanism to a designated position are avoided.

Disclosed is a pipeline connector. The upper portion of the pipeline connector comprises fixed racks (7), front and back adjustable pipeline locking devices (6) are arranged under the racks, positions of the two adjustable pipeline locking devices correspond to each other, and central points of the two adjustable pipeline locking devices are in a straight line; rotating clamping plates (10) on two sides of each pipeline locking device are connected with each fixed rack (7) through adjusting connecting rods (4), and the upper portion of each pipeline locking device is connected with each fixed rack through a locking supporting arm (5) with a hydraulic cylinder; two ends of the front and back adjustable pipeline locking devices are connected through hydraulic assembling supporting arms (2) respectively, and driven supporting guide rails (3) are arranged on two sides of the fixed racks respectively; a hydraulic controller (1) is arranged on the fixed racks, and each hydraulic oil cylinder is connected with the hydraulic controller through an oil pipe. According to the device, the centers of the two pipeline locking devices are in the same straight line, two pipelines are clamped simultaneously during installation, manual pipeline suspension is not required, orifices of the two pipelines are aligned to each other, the installation is accurate, watertightness is not damaged, and the installation quality of rubber rings and the pipelines is good. The installation efficiency is high, and time and effort are saved.

The invention discloses a gear impact bend simulation test method, which comprises impacting a toothed test sample clamped and loaded at the lower part of an impact bend test device through a pendulum hammer of the test device to obtain impact bend strength data, wherein the long side of the rectangular cross section of the stressed end of the test sample is matched with a pendulum hammer head blade, and an included angle of 30 degrees is formed between one side at the front end of test sample and the tangential line of the movement trajectory of the blade on the blade side. The invention also provides a gear impact bend simulation test device for the gear impact bend simulation test method. The inventive gear impact bend simulation test method has the characteristics of simple structure and accurate and rapid installation. The original simulation of the stress at one point in the middle of tooth width is changed to simulate the stress in the tooth width, which conforms more to the practice of line contact stress when gears is engaged, so that the obtained test data is more valuable as performance reference.

In the mounting structure of the fender lining 4 arranged lower inside of a front fender panel 2, the outside of which is covered with the fender splash guard 8, a second contact surface 4b contacted with the flange 8a of the fender splash guard 8 and a flange 4c extended outward from the second contact surface 4b and contacted with the inner wall surface of the design section 8b of the fender splash guard 8 are provided in the outside of the fender lining 4.

A system of for installing unanchored fence post anchors with equidistant blades accurately with one or two persons comprising tools to align the fence post anchor while it is being urged into an anchored state.

The invention relates to a top cover lining of an automobile panorama skylight. The lining comprises a lining main body, wherein a skylight port is formed in the lining main body; a lining flanged edge is arranged at the edge of the skylight port; the cross section of a front end bracket 4 is in the shape of a groove, and four stopping ribs and two stopping posts are arranged on the front end bracket 4; both end parts of the front end bracket are bonded with the front edge of the skylight port, and the lining flanged edge clads the groove wall of the groove of the front end bracket; a space between the groove wall of the groove and the stopping ribs is connected with the flanged edge of an abat-vent metal plate in a jamming manner. A plurality of dual locks are respectively bonded near the back, the left and the right of the skylight port, and three resin nail mounting holes are formed in the back of the lining main body. The top cover lining disclosed by the invention has the advantages of simplicity in structure, easiness in assembly, and reliability in connection; rubber holding strips are not distorted or wrinkled on the corner and have beautiful appearance.

The invention provides a small flexible distributing/feeding manipulator and relates to a manipulator. The small flexible distributing/feeding manipulator comprises a distributing device and a feeding device; the distributing device comprises a chute and brackets fixed at two sides of the chute; a sliding block is arranged in the chute; one side of the sliding block is connected with a cylinder rod of a double-acting single-lever cylinder; the double-acting single-lever cylinder is positioned outside the brackets; the chute is further provided with an end cover; the sliding block is provided with a storage hole; the end cover is respectively provided with a feeding port and an air inlet hole; the chute is provided with a discharging port; the feeding port is coaxial with the storage hole; the air inlet hole is coaxial with the discharging port; the feeding device comprises a vertical displacement cylinder with the brackets and a feeder; the feeder is fixed below the vertical displacement cylinder; a slide is arranged in the feeder; one end of the slide leads to the bottom of the feeder, and the other end of the slide leads to the side of the feeder and is connected with the discharging port on the chute through a hose. The small flexible distributing/feeding manipulator can distribute and feed fine materials accurately and quickly, thereby realizing quick and accurate installation.

The invention discloses a moving device for a screw gun. The moving device comprises a workbench and the screw gun, wherein the workbench is used for machining a workpiece, a cross beam frame body is arranged on the workbench, the screw gun is used for tightening and unscrewing a screw nut, and a connecting arm is connected with the screw gun; the upper portion of the connecting arm is connected to a moving plate in a clamped mode, and the moving plate comprises a longitudinal sliding rail; the moving plate is connected to a transverse sliding rail in a clamped mode, and the transverse sliding rail is fixed to the cross beam frame body of the workbench. Through the designed moving device for the screw gun, production requirements of a production line can be met, efficiency of mass production is improved, the position of the screw gun can be adjusted and moved at will according to requirements of a product, the screw gun can rotate at 180 degrees, the requirement that screws be installed on different sides of the product is met, the ideal installation effect is achieved, and the screws can be installed on the product quickly and accurately.

The invention relates to a hand tool, in particular to a nail-holding magnetic head screwdriver. The problem that an existing magnetic head screwdriver cannot absorb and hold copper and aluminum screws and cannot absorb and hold iron screws regularly is solved. The nail-holding magnetic head screwdriver comprises a magnetic head screwdriver body, the magnetic head screwdriver body is provided with a nail-holding device, and the nail-holding device is formed by a guide ring annularly sleeving a cone rod of the magnetic head screwdriver body and a rope sleeve fixedly adhering to the guide ring and having the length larger than that of the guide ring. The guide ring and the rope sleeve are made of elastic materials. The nail-holding magnetic head screwdriver has the advantages that the screws are held reliably, installed and positioned accurately and absorbed conveniently after being dismantled, and the nail-holding magnetic head screwdriver is suitable for installation and dismantling of the screws at the sunken positions.

The invention discloses a detachable electric power tunnel cable safety supporting device. The device comprises a rack body, an upper embedded part and a lower embedded part, wherein the embedded parts respectively comprise a vertically-arranged water blocking plate, an outer side of a middle portion of the water blocking plate of the upper embedded part is fixedly provided with a ground plate through a connection column, the ground plate and the water blocking plate are arranged parallelly, an outer concrete block for wrapping the connection column is fixedly arranged between the ground plateand the water blocking plate, a middle portion of the water blocking plate of the lower embedded part is fixedly provided with a horizontally-arranged calibration plate, inner sides of the middle portions of the water blocking plates of the embedded parts are perpendicularly and fixedly provided with bolts, inner sides of the water blocking plates are provided with inner concrete blocks fixedly arranged on inner walls of the bolts and the water blocking plates, the inner concrete blocks and the outer concrete block are cuboids of which circumferential walls are arranged in a parallel mode, abottom surface of the calibration plate is level with bottom surfaces of the inner concrete blocks, and the rack body is provided with bar-shaped holes corresponding to tail ends of the bolts. The device has advantages of stable concrete casting position, accurate mounting, fast construction speed, reliable supporting, good sealing, non-easy water seepage, long service life, convenient dismountingand maintenance and low use cost.

The invention provides a door drive mechanism installation device of a passenger train and the passenger train. The door drive mechanism installation device of the passenger train comprises a drive mechanism. The drive mechanism comprises a connecting frame and an installation rack, wherein the connecting frame is used for being fixedly connected to roof suspension fittings, the installation rack is used for driving a built-in door to be opened and closed, the connecting frame and the installation rack are in hinged connection, and the connecting frame is used for fixing the drive mechanism on a passenger train body. The door drive mechanism installation device further comprises an installation assembly arranged on one side of the drive mechanism; the installation assembly comprises a vertically arranged first support and a horizontally protruding second support; the top end of the first support is fixedly connected to the roof suspension fittings, and the tail end of the second support abuts against the side face, facing the installation assembly, of the installation rack. According to the door drive mechanism installation device of the passenger train, the drive mechanism is prevented from tilting towards the inner side of the passenger train body along an articulated shaft during installation, the plumbness of the drive mechanism is guaranteed, and therefore the installation of the built-in door is accurate.

The invention discloses a casing type in-hole instrument positioning and embedding device. A monitoring instrument is fixed onto a mounting plate through super glue; the mounting plate is fixed onto a mounting main frame through positioning threaded holes and positioning screws; the mounting main frame is inserted into a drill hole; the mounting plate fixedly provided with the monitoring instrument is arranged in the position inside the inner cavity of the mounting main frame wherein the positioning threaded holes are formed, and then the mounting plate is aligned to the threaded holes and fixedly mounted and positioned on the mounting main frame from top to bottom layer by layer; a grouting pipe is inserted inside the drill hole and performs grouting until the drill hole is filled with grout. The casing type in-hole instrument positioning and embedding device is simple in structure, convenient to operate, free from complex mounting operations, accurate in positioning and capable avoiding restriction of external severe environments and influence on backfilling. The casing type in-hole instrument positioning and embedding device is particularly applicable to positioning and mounting monitoring instruments in narrow space and meanwhile is high in mounting effects and simple in operation.

The invention discloses a special single-rod hanger for a cable tray, which comprises a hanger rod and a support plate. The using detection of the hanger rod is used as the reference. The upper end of the hanger rod is fixedly connected with a steel beam, and the quantity of hanger rod is one. The hanger rod is provided with a first hollow fixing element. A circle of radial baffle plates is formed at the bottom of the first fixing element. The baffle plate is provided with a hole. A bolt is inserted into the hole. The large head end of the bolt stops the baffle plate, and stops to rotate with the fixing element. The fixing element is fixedly sheathed at the lower end of the hanger rod. The middle of the support plate is provided with a penetrating hole. The lower end of the first bolt penetrates through the penetrating hole and penetrates out of the lower end of the support plate. A nut is screwed with the lower end of the bolt. The invention can be convenient and accurate to install, and has the advantages of simple structure and easy implementation.

The invention discloses a determination method and a device for the installation position of a voltage regulator in an overhead line. The method comprises the following steps: simulating the overhead line by an overhead line dynamic simulation system comprising an impedance simulator and a load simulator, and receiving power distribution parameters of the overhead line by the overhead line dynamic simulation system, wherein the power distribution parameters of the overhead line include line length and load parameters of the overhead line; respectively adjusting the impedance simulator and the load simulator by the overhead line dynamic simulation system according to the line length and load parameters to obtain a simulation line used for simulating line impedance and line load of the overhead line; and determining the installation position of the voltage regulator by the overhead line dynamic simulation system in the simulation line. Through the determination method and the determination device disclosed by the invention, the problem of inaccurate installation position of the voltage regulator in the related technologies is solved.

The invention relates to a field prefabricated wallboard mounting structure. The field prefabricated wallboard mounting structure comprises a concrete board (1), wherein left and right rows of anchorbolts (2) are arranged on the upper and lower sides of the concrete board (1); a prefabricated wallboard (3) is clamped between the left and right rows of anchor bolts (2); and a post-cast surface layer or a floated coat covers the left and right rows of anchor bolts (2). According to the field prefabricated wallboard mounting structure, the two rows of anchor bolts are arranged on the concrete board to fix the prefabricated wallboard, and the prefabricated wallboard does not need to be reserved and pre-buried, so that the trouble and labor are saved, the mounting is accurate, the wallboard isnot damaged, and the structure safety is reliable.

The invention provides a windscreen wiper motor rotor snap spring mounting device which comprises a horizontal base, a fixing plate, a clamping piece, a motor shell placing mechanism and a motor shell. The fixing plate is fixed to one side of the top of the horizontal base, the motor shell placing mechanism is arranged on the other side of the top of the horizontal base, and the motor shell is placed on the motor shell placing mechanism. A pushing mechanism is fixed on the fixing plate, a clamping piece is arranged at the output end of the pushing mechanism, the clamping piece clamps a snap spring to move into the motor shell, a limiting mechanism for limiting the position of the motor shell is arranged on the horizontal base and located above the motor shell, and the limiting mechanism clamps a rotor to be inserted into the motor shell. The snap spring mounting device has the advantages that on one hand, the clamp spring mounting efficiency can be improved, on the other hand, the snap spring mounting position can be more accurate, the snap spring using effect is better, the shaking phenomenon is avoided, and meanwhile the snap spring can be prevented from being damaged.

The invention relates to a blind hole workpiece dismounting device, and belongs to the field of mechanical machining. According to technical scheme, the blind hole workpiece dismounting device comprises a force transmission rod; a press-fit top plate is arranged at the top of the force transmission rod; a self-centering conversion chuck is arranged at the bottom of the force transmission rod; a compression rod head or a pull rod head is arranged on the self-centering conversion chuck; and the compression rod head extrudes a shaft workpiece in a blind hole in a blind hole workpiece or the pullrod head pulls up after the pull rod head is fixed with a broken piece in the blind hole. The blind hole workpiece can be mounted more accurately, can be dismounted more conveniently and quickly without damage, and the labor intensity of workers can be greatly reduced.

The invention discloses a device for reverse beating of a screw and a process. The device comprises a frame body; a screw beating assembling body is arranged in an inner cavity of the frame body; thetwo sides of the screw beating assembling body are each provided with a jacking mechanism which is used for jacking up a sliding plate; the two sides of the sliding plate are in sliding connection with the frame body; a draught fan is fixed to the sliding plate; a fixed rod is arranged above the screw beating assembling body, and is provided with screw rod pressing feet which are fixed to the fixed rod through a pressing foot fixing plate; a control cabinet is arranged at the upper end of the frame body; a touch screen is arranged on one side of the frame body; the screw beating assembling body comprises a first telescopic rod, a second telescopic rod and a rotating shaft; a first connection block is arranged at one end of the first telescopic rod; a screw gun body is fixed to the first connection block; a second connection block is arranged at one end of the rotating shaft; a pushing rod is arranged at the upper end of the second connection block; and a second telescopic rod is arranged on one side of the second connection block. The device for reverse beating of the screw has the beneficial effects of being high in installing precision, automation degree and the like.

A spoiler mounting structure comprises a spoiler body, a back door metal plate and a rear windshield. The spoiler mounting structure is characterized in that coach bolts are fixed to the two ends of the spoiler body through clamping bases, a mounting support is fixed to the middle of the spoiler body through reed nuts, and two overbolts are welded to the mounting support; the two ends of the back door metal plate are provided with kidney-shaped holes which correspond to the coach bolts at the two ends of the spoiler body in position, the middle of the back door metal plate is provided with a clamping groove corresponding to the mounting support in position, and a positioning metal plate is further welded to the end of the interior of the back door metal plate and provided with round holes corresponding to the two overbolts on the mounting support in position; and the mounting support is tightly attached to the clamping groove, the free ends of the overbolts penetrate through the clamping groove and the round holes formed in the positioning metal plate and are connected with nuts, and the coach bolts penetrate through the kidney-shaped holes and are connected with nuts. By means of the spoiler mounting structure, the technical problems that in the prior art, mounting is unstable, water leakage is liable to occur due to the fact that a gap exists between a spoiler and a metal plate, and a sealing rubber strip is turnup as the dimensional tolerance does not meet the standard are solved.

The invention provides an assembling device of a carbon brush holder for an automobile and a using method of the assembling device, and belongs to the technical field of carbon brush holder production. The assembling device comprises a mounting table, two first mounting blocks are fixedly connected to the upper end of the mounting table, a second mounting plate is fixedly connected to the upper ends of the two first mounting blocks, and a first mounting plate is arranged on the upper side of the mounting table; the first mounting plate is located between the two first mounting blocks, a fourth mounting plate is arranged on the upper side of the first mounting plate and located between the two first mounting blocks, two third mounting blocks are fixedly connected to the lower end of the mounting table, and a third mounting plate is fixedly connected to the lower ends of the two third mounting blocks; and a second limiting groove is formed in the lower end of the second mounting plate, and a second mounting groove is formed in the lower end of the fourth mounting plate. According to the invention, the problems that in the prior art, during manual assembly, the installation size is difficult to grasp, the situation of low installation precision is easy to occur, and the carbon brush is located in the rectangular copper frame and cannot normally operate can be solved.

The invention provides a method and an apparatus for automatically installing virtual machine management software. The method comprises the following steps of during virtual machine operation, executing a software installation script, and according to an access path of a mirror image file ISO of the virtual machine management software Tools, obtaining the mirror image file and performing Tools installation. According to the technical scheme, automatic, efficient and accurate installation of Tools is realized by executing the software installation script according to the obtained mirror image file ISO of the virtual machine management software Tools.

The invention discloses a secondary precise leveling device of an underground space prefabricated member. The secondary precise leveling device comprises a pile bottom initial leveling base plate located in a prefabricated pile hole, and a pile top leveling spacer. The prefabricated member is arranged at the upper end of the pile bottom initial leveling base plate. The pile top leveling spacer used for conducting secondary adjustment on the pile top elevation is arranged at the upper end of the prefabricated member. The invention further discloses a secondary precise leveling method of the underground space prefabricated member. A hole bottom cushion layer and the prefabricated member are adjusted for the first time by installing the pile bottom initial leveling base plate, the height difference between the top elevation H4 of the initial leveling base plate and the designed pile bottom elevation H3 is smaller than or equal to 10 mm, and the pile top leveling spacer is installed at the top of the prefabricated member, so that the height difference between the top elevation H7 of the pile top leveling spacer and the beam bottom elevation H6 meets the height difference installation deviation requirement of a prefabricated beam. According to the leveling method of the technical scheme, accurate assembly and construction of the prefabricated member in the underground space can be achieved rapidly, and adjustment can be achieved again specific to the pile top elevation dislocation before joint assembly and construction.

The invention provides a positioning device for installing a steel bar meter in an existing pile foundation drill hole and a working method of the positioning device, and relates to the field of pilefoundation monitoring. The positioning device comprises a disc, at least three sliding grooves formed in the radial direction of the disc and positioning blocks matched with the sliding grooves and sliding along the sliding grooves, and an installation groove penetrating through the disc in the axial direction is formed between every two adjacent sliding grooves; each installation groove extends to the center of the disc from the outer circumference of the disc, and the widths of the installation grooves are gradually reduced in the centripetal direction; and the disc is matched with the positioning blocks to form a centering structure, in cooperation with the installation grooves arranged in the disc, the disc and the steel bar meter are pushed by the positioning blocks to be arranged ina centering manner, the steel bar meter is matched with a steel bar to be installed on the disc, the steel bar meter is supported by the disc, and the effect of accurate centering installation of thesteel bar meter is achieved.

The automobile air conditioner compressor assembling system comprises a mechanical arm, a positioning clamp installed on the mechanical arm, a cylinder body-profiling cylinder body quick-changing assembly and a controller for controlling the mechanical arm and the cylinder body-profiling cylinder body quick-changing assembly to switch the positions of a cylinder body and a profiling cylinder body. The positioning clamp comprises a vertical guide rail and a first air cylinder which are installed on the mechanical arm, a positioning assembly is arranged on the vertical guide rail, an installation body installed at the output end of the first air cylinder is arranged on the vertical guide rail in a sliding fit mode, and a clamping assembly is installed on the installation body. And the position of the piston does not need to be standardized again in the installation process, so that the assembly efficiency is greatly improved, and the labor intensity is reduced.

The invention discloses a supporting and hanging device, particularly discloses a supporting and hanging device for mounting a newly-built coke oven protection plate, which belongs to the technical field of design and manufacturing of engineering construction process equipment. The invention provides the supporting and hanging device for mounting the newly-built coke oven protection plate, which is convenient to construct and operate and can effectively ensure the mounting quality. The supporting and hanging device comprises a supporting and fixing frame and a hanging and installing assembly, and the hanging and installing assembly used for hanging the protection plate is movably arranged on the machine side and the coke side of the coke oven through the supporting and fixing frame.

The invention provides a multi-nozzle arranging, positioning and mounting device and method. The device comprises a bottom plate provided with a plurality of mounting holes and a plurality of adapters used for bearing nozzles in a one-to-one correspondence mode and assembling the nozzles to the bottom plate correspondingly, and positioning pieces are arranged on the bottom plate. A first reference side plane perpendicular to the top surface of the bottom plate is formed on the surface of one side of each positioning piece through finish machining. Each adapter comprises an adapter plate which is provided with a standard mounting position for assembling the nozzles, a reference block assembled on the adapter plate and provided with a second reference side plane and a third reference side plane which are perpendicular to each other through finish machining and a locking assembly used for locking the adapter plate to the bottom plate after the second reference side plane of the reference block is attached to the first reference side plane of each positioning piece. The side face, provided with spray holes, of the nozzle is parallel to the bottom face of the adapter plate, and the reference block is assembled on the bottom face of the adapter plate in a parallel and attached mode through the third reference side plane. According to the device, the mounting precision of each nozzle can be effectively improved.

The invention discloses a distance-adjustable energy-saving daylighting roof and relates to the technical field of architectural engineering. The energy-saving daylighting roof comprises a steel structure framework, a glass plate, a vertical column and a vertical column connecting piece, wherein the glass plate is fixedly connected with the end part of the vertical column; mounting holes are formed in the side surface of the steel structure framework, the side surface of the vertical column and the vertical column connecting piece; the axial directions of the mounting holes are parallel to the plane of the glass plate; the vertical column connecting piece is fixedly connected with the steel structure framework through bolts in the mounting holes; the vertical column connecting piece is fixedly connected with the vertical column through the bolts in the mounting holes; the mounting hole in the vertical column connecting piece is a long round hole; and the length direction of the long round hole is vertical to the plane of the glass plate. The energy-saving daylighting roof is assembled through the long round holes, namely the mounting holes formed in the side surfaces of the steel structure framework and the vertical column; and the distances from the vertical column to the steel structure framework and from the vertical column to the glass plate can be both flexibly adjusted, so that the glass plate is more accurate to mount and better in flatness.

The invention discloses an optical lens mounting and debugging device. The device comprises a lens cone fixing mechanism, an optical lens group, a lens propelling mechanism, a bearing platform for supporting an optical lens assembly, and a transmission mechanism for driving the lens propelling mechanism to move; the lens cone fixing mechanism is movably fixed on the transmission mechanism, the transmission mechanism is fixed on the bearing platform, and the lens cone fixing mechanism, the optical lens group and the lens pushing mechanism are sequentially arranged in the axial direction of the optical lens group; and according to the mounting and debugging device, the optical lens assembly is mechanically connected with the lens barrel, the possibility that a hand is in contact with the mirror surface of the optical lens does not exist in the process, so that the possibility that the mirror surface is polluted is avoided, meanwhile, the lens is mechanically mounted, the defects that the manual mounting precision is poor, and the lens is easily clamped in the lens barrel are overcome, meanwhile, accurate installation can be achieved, and the installation precision and the installation efficiency are improved.

The invention discloses a mounting device for a main support frame plate of a lithography machine. The mounting device comprises a first sliding table mounting plate, a second sliding table mounting plate, and an inclination angle adjusting assembly. One end of the first sliding table mounting plate is hinged to one end of the second sliding table mounting plate. The inclination angle adjusting assembly is arranged between the first sliding table mounting plate and the second sliding table mounting plate and used for adjusting an included angle between the first sliding table mounting plate and the second sliding table mounting plate; the first sliding table mounting plate is provided with a first sliding table which is detachably and fixedly connected with a reference plate, and the firstsliding table can slide on the first sliding table mounting plate; and the second sliding table mounting plate is provided with a second sliding table which is detachably and fixedly connected with the frame plate, the second sliding table can slide on the second sliding table mounting plate, and the sliding direction of the first sliding table and the sliding direction of the second sliding table are perpendicular in space. The device is simple in structure, adjustment of three degrees of freedom can be realized, high-precision positioning and installation are carried out, and physical laborof operators is reduced during installation and adjustment.

The invention provides a dual bolt type veneer mounting structure. A bolt head of a connecting bolt is mounted in a connecting bolt opening, a thread end penetrates through a connecting face and thenpenetrates through a connecting plate to be in engaging connection with a connecting nut, one face of a turning side is attached to a clamping face, a clamping tooth is embedded in a clamping groove or clamping hole, a bolt head of a pressing nut is arranged in a pressing bolt opening, a thread end penetrates through a pressing face, and penetrates through a pressing plate to be in engaged connection with the pressing nut, a pressing plate is pressed on the other face of the turning side, and the structure has the advantages that when veneer and a framework are connected and fixed, any adjusting can be carried out, the aim that any point is taken from a dual bolt groove keel for fixing is achieved, precise mounting is achieved, and the structure is particularly suitable for ceiling decoration of a multi-curve modeling metal plate.