235results about How to "Improve verticality" patented technology

The invention discloses a limited micro-space pile foundation construction method based on a multifunctional pile machine, and belongs to the technical field of constructional engineering pile foundations. The limited micro-space pile foundation construction method comprises the following construction steps that S1, a matched drilling tool is selected according to the type of a pile foundation, wherein the type of the pile foundation at least comprises one of a cast-in-situ bored pile, a stirring pile, a high-pressure jet grouting pile and a threaded expanding body steel pile; s2, pile machine equipment is assembled and placed in place, wherein the pile machine equipment comprises a main machine assembly, a drilling rig assembly, a power head assembly and a multi-channel telescopic drilling rod; and S3, pile foundation construction is conducted, specifically, corresponding pile machine equipment and auxiliary equipment are started according to different pile foundation technologies to conduct pile foundation construction. According to the multifunctional pile machine, various pile foundation types can be constructed on one pile machine, the power head with the multi-channel flow divider and the multi-channel telescopic drill rod are matched, so that the pile machine can achieve efficient and environment-friendly pile foundation construction in a limited space, the adaptability and the integration degree of equipment are improved, continuous work in construction is reduced, and the construction efficiency is improved. And the construction efficiency is improved, and various geological conditions and construction requirements can be met.

The invention discloses a motor stator and rotor assembling device which comprises a workbench, a support is installed on the workbench, and a clamping and fixing assembly used for clamping and positioning a motor stator assembly is installed on the support. Two conveying rails arranged side by side are arranged on the table top of the workbench, the two conveying rails support the edge of the end of a gearbox shell of a motor rotor assembly and convey the motor rotor assembly to the position under a motor stator assembly, a motor rotor is located above the two conveying rails, and the output end of the motor rotor is located between the two conveying rails. A first limiting assembly matched with the bottom end face of the output end of the motor rotor for limiting and a second limiting assembly matched with the side face of the output end of the motor rotor for limiting are arranged on the table top of the workbench. The linear movement driving assembly is connected with the clamping and fixing assembly. The rotor shaft is fixed on a single side, the stator and the rotor are assembled simply, efficiently and accurately, and the rotor shaft assembling device can adapt to rotor shafts and shells with different assembling modes and different shapes and sizes.

The invention discloses a multilayer circuit board pressing method and a multilayer circuit board. The multilayer circuit board laminating method comprises the following steps: providing a first circuit board; one side surface of the first circuit board comprises a fixing hole setting area; a groove is formed in the fixing hole setting area; a fixing hole penetrating through the first circuit board is formed in the bottom of the groove through punching equipment; sequentially stacking the target number of first circuit boards and prepregs according to the stacking design for pre-typesetting; and fixing the first circuit board and the prepreg through a pin by adopting a pin positioning lamination process, and then pressing. By the adoption of the scheme, the punching capacity requirement of punching equipment can be met, manual single punching is not needed, the preparation efficiency of fixing holes is improved, and the punching technological process is simplified; and the alignment precision of the fixing holes and the perpendicularity of the fixing holes can be improved, so that the quality of the fixing holes is improved, the fixing effect is ensured, and the production yield of the multilayer circuit board is improved.

The utility model relates to the field of storage boxes, in particular to a high-stability storage box capable of being stacked in multiple layers, bottom corners are arranged at the four corners of the bottom of a box body in a wrapping mode, a box cover is arranged above the box body in an opening and closing mode through an opening and closing hinge, and top corners are arranged at the four corners of the top of the box cover in a wrapping mode; side plates are upwards and vertically arranged on two adjacent surfaces of the outer sides of the top corners, convex marks are arranged on four edges of the top surface of the box cover, and a positioning block is upwards arranged in the middle of the top surface of the box cover. According to the utility model, the positioning blocks and the positioning cavities are arranged to position the box bodies when the box bodies are stacked, and the side plates, the convex marks and the concave marks are arranged, so that the stability of the stacked box bodies can be improved, the upper box bodies are not easy to fall off, the overall perpendicularity of the box bodies when the box bodies are stacked can be improved, and the collapse risk can be reduced.

A cutter clamp sleeve comprises a positioning clamp with an axial through hole and a tensioning piece, the upper end of the positioning clamp is provided with a B datum plane, the clamp wall of the positioning clamp is provided with at least one upper open groove and at least one lower open groove, and the upper open grooves and the lower open grooves are arranged in a staggered mode so that the positioning clamp can form an elastic body. The tensioning piece is arranged outside the clamping wall of the positioning clamp in a sleeving mode, and the positioning clamp and the tensioning piece are coaxially arranged and jointly used for clamping a tool. The utility model has the advantages that the cutter clamping sleeve is not easy to shake or loosen, the cutter does not shake or shift, the processing accuracy is higher, the structure is more compact and small, and the cutter swing is smaller during high-speed and high-precision processing.

The invention provides a small-diameter shell machining machine tool, and relates to the technical field of machine tools. The single-swing-head numerical control lathe comprises a lathe body, a portal frame, a rotating table, a sliding rod, a single swing head and a vertical driving assembly, and the portal frame is arranged above the lathe body; the rotary table is arranged between the portal frame and the bed body; a sliding hole is formed in the portal frame in the vertical direction, the bottom end of the sliding rod is located above the rotating table and connected with the single swing head, and the top end of the sliding rod upwards penetrates through the sliding hole and abuts against the inner wall of the sliding hole; the vertical driving assembly is arranged on the portal frame, and the vertical driving assembly is in transmission connection with the sliding rod and can drive the sliding rod to move along the sliding hole. The device has the advantages that the sliding rod is not prone to deformation, and the machining precision is high.

The present invention relates to a robot device and a comprehensive detection method for comprehensive detection of crane tracks, and belongs to the technical field of crane track detection. The device includes a laser emitting unit, a light target platform, and a control terminal; the laser emitting unit includes a laser emitter installed on the crane track and emitting a laser beam in a horizontal direction; the light target platform includes a platform vehicle moving along the crane track and a control unit installed on the outer end surface of the platform vehicle to control the movement of the platform vehicle, a light target for receiving the laser beam of the laser emitter, and a laser ranging component; the laser ranging component emits a laser beam toward another crane track in a horizontal direction; the laser emitting unit and the light target platform are installed on one of the crane tracks, and a follower light target trolley for receiving the laser beam emitted by the laser ranging component is arranged on another parallel crane track. Various parameters are detected by establishing a crane track space coordinate system.

The invention provides sludge thickness detection equipment for water conservancy detection and a detection method, and belongs to the technical field of sludge thickness detection sensors. Comprising an outer pipe, a motor is fixed to the inner wall of the outer pipe through a support, a screw is fixed to the output end of the motor, a distance sensor is fixed to the bottom of the motor, the surface of the screw is sleeved with a detection rod in a threaded mode, the outer pipe movably sleeves the surface of the detection rod, a guide rail is fixed to the inner wall of the outer pipe, and a sliding block is fixed to the surface of the detection rod and attached to the interior of the guide rail. The bottom of the outer pipe is in threaded connection with a sealing ring, and the bottom of the sealing ring is a tip. By arranging the outer pipe, the detection rod, the first pressure sensor, the floating plate with holes and the reference assembly, when the thickness of sludge is detected, the outer pipe is supported on the sludge, the perpendicularity of the outer pipe and the detection rod is improved through the reference assembly, so that the detection precision is improved, the outer pipe can be supported on the water surface through the floating plate with holes, the thickness of the sludge at different positions can be detected, and the detection accuracy is improved. And the detection limitation is smaller.

The utility model discloses a kind of composite fireproof insulation board laminating device, the utility model relates to thermal insulation board laminating technical field.It is laminated mechanism for composite fireproof insulation board and is provided on the mounting base, laminated mechanism includes: press-fit component, including the support rod fixed with both side walls of mounting base, the upper end of the support rod is provided with the mounting plate connected by lifting assembly, the lower end surface of the mounting plate is provided with the pressure plate main body connected by elastic component, the lower end inside of the pressure plate main body is provided with rectangular frame slot, the inside of the rectangular frame slot is provided with the rectangular pressure plate connected by telescopic component, the utility model is driven rectangular pressure plate telescopic by second hydraulic rod, realize the pertinence pressure to the edge of thermal insulation board, since the edge of thermal insulation board is prone to the problem of not firm combination when laminating, can effectively improve the compaction degree and bonding strength of edge, avoid edge curling, delamination and other quality problems.

The invention provides a rice cultivation seedling raising device which structurally comprises a positioner, a seedling raising box, a loading piece, a control screen and a heat dissipation end, the positioner is embedded in the lower end of the seedling raising box, and the loading piece is installed in the center of the surface layer of the seedling raising box; after the loading part is further improved, the positions of the three groups of cultivation devices can be effectively determined by controlling the three groups of parallel bodies on the pulling plate, so that the parallel bodies can prevent water molecules from permeating through gap areas according to the effect that the bottoms are integrated, and then a large number of rice seedlings can be cultivated in a unified mode through the three groups of cultivation devices; therefore, the seedling raising efficiency and the stability effect can be improved, meanwhile, the hanging plate of the cultivation device can be vertically disassembled from the parallel body through vertical disassembly and assembly of the vertical block, so that the effect of conveniently adding nutrients into the parallel body is achieved, multiple rice seedlings can be separated one by one through cooperation of multiple sets of positioners, and the seedling raising efficiency is improved. And the stability of unified cultivation is improved.

The invention relates to the technical field of building construction, in particular to an NALC wall structure and a masonry method thereof.The NALC wall structure comprises NALC building blocks, grooves are formed in the NALC building blocks, tie bars are arranged in the grooves, and positioning columns are arranged at the bottoms of the NALC building blocks; the NALC building block has the beneficial effects that the NALC building block is fixedly connected with the frame concrete column and the frame concrete beam through fasteners by using connecting pieces, and the tie bars are placed in the grooves formed in the NALC building block and are fixed on the NALC building block through adhesives, so that the wall body is high in strength and good in integrality through the cooperation, and the construction period is shortened. The flatness and the perpendicularity of the wall surface are easy to control during construction, the positioning columns fixedly connected to one NALC building block are clamped into the positioning holes formed in the other NALC building block, and the positioning columns are matched with the side supporting blocks on the NALC building blocks, so that workers can build and calibrate the NALC building blocks conveniently, the flatness and the perpendicularity of the wall surface are improved, and the construction efficiency is improved. Plates do not need to be manufactured according to the actual wall size, and transportation and installation are convenient.

The utility model discloses a connecting structure of plunger pumps and a concatemer rotary valve, which belongs to the technical field of filling metering control and comprises a rotary valve sleeve, a plurality of plunger pumps and a connecting component used for connecting the rotary valve sleeve and the plunger pumps, and the rotary valve sleeve and the plurality of plunger pumps are supported by a fixed frame. The plunger pump comprises a plunger sleeve and a plunger rod installed in the plunger sleeve, the plunger sleeve comprises a plunger upper end, a plunger middle end and a plunger lower end, a flat milling position is machined on the outer wall of the plunger middle end, the connecting assembly comprises a connecting pipe, and the top end of the connecting pipe is connected with the bottom end of the rotary valve sleeve. The plunger pump and the rotary valve sleeve are connected through the connecting pipe, the connecting pipe is subjected to dual protection sealing through the sealing ring, screws or hoops are not needed for connection, parts are reduced, meanwhile, a certain floating space is achieved, assembly errors caused by multiple parts can be eliminated, the plunger pump is arranged to be the plunger upper end, the plunger middle end and the plunger lower end, and the assembly efficiency is improved. And the fixing bracket can be conveniently and quickly disassembled and assembled when being used for fixing.

The utility model discloses a ray protection device of intelligent sorter relates to protection device technical field, including the shell and install the ray source in the shell, be equipped with the baffle in the shell, the baffle divides the inside of shell into cavity 1 and cavity 2, and the baffle middle part is equipped with the positioning cylinder that protrudes towards the inside of cavity 2, and the baffle middle part is equipped with the baffle. The radiation source is installed in the positioning cylinder, a protective cover is arranged on the outer side of the radiation source in the first cavity, a beam limiting tube is installed on the left end face of the shell in a penetrating mode, one end of the beam limiting tube is arranged on the outer side of the protective cover in a sleeving mode, a lens is installed in the other end of the beam limiting tube, and a heat dissipation assembly is arranged in the second cavity. The X-ray receiving device is reasonable in design, simple in structure, small in size, capable of reducing the situation that X-rays irradiate the outer side of the X-ray receiving device, good in protection effect and high in practicability.

The present invention discloses a cast steel integrated civil air defense door leaf structure, which relates to the field of civil air defense doors, including a main leaf body and a main frame body, the main frame body is a rectangular frame body structure, the main frame body includes two horizontal transverse door frame strips and two vertical longitudinal door frame strips, the transverse door frame strips and the longitudinal door frame strips are integrally cast and formed, the transverse door frame strips and the longitudinal door frame strips are integrally cast and formed with the main leaf body, the main leaf body is composed of an inner panel, a main beam and a secondary beam, the main beam and the secondary beam are integrally cast and formed with the inner panel, the upper and lower sides of the main beam are vertically connected with a plurality of secondary beams, the secondary beams are staggered up and down, and the main beam and the secondary beam are integrally cast and formed. The casting process is used for integral casting, and the overall flatness, verticality, and rigidity of the door leaf are greatly improved compared with the welded structure, the distribution of the main and secondary beams and their cross-sectional design are optimized, there is no outer panel, the weight is reduced and the cost is reduced, and it is conducive to the casting of the leaf body and the subsequent demoulding treatment, and it is conducive to the standardized mass production of the door leaf.

This invention relates to the field of mining exploration technology, and discloses an intelligent mining engineering exploration device and its usage method. The device includes a body and a lifting mechanism. A base is fixedly mounted on the body, and a frame is rotatably mounted on the base. A lifting platform is slidably mounted on the frame. The lifting mechanism is mounted on the frame to drive the lifting platform up and down. A rotating mechanism is connected to the bottom of the lifting platform via a universal joint. A drill rod is fixedly mounted at the drive end of the rotating mechanism, and a drill bit is fixedly mounted at the bottom end of the drill rod. A straightening component is mounted on the outside of the drill rod. The straightening component includes a sliding ring sleeved on the outside of the drill rod, and several linear actuators are fixedly mounted on the surface of the sliding ring. By relying on the gravity coordination of the universal joint and the closed-loop feedback of the pressure sensor, the device can automatically complete the vertical alignment of the drill rod and dual intelligent straightening, significantly improving the verticality of the borehole and the exploration accuracy, and reducing the risk of swaying and stuck drill.

The utility model relates to the technical field of electric power building construction, in particular to an offshore photovoltaic pile foundation positioning frame which comprises a truss, a guide assembly and a positioning assembly. The guiding assembly is arranged on the truss and used for guiding the pile foundation, the guiding assembly comprises four cylinders which are arranged at the four corners of the truss correspondingly, the axial direction of the cylinders is arranged in the vertical direction, and the cylinders are fixedly connected with the truss; the positioning assembly is arranged on the truss and used for positioning coordinates and elevations of the four cylinders. The guide assembly is arranged on the truss, the four barrels in the guide assembly can limit the pile foundation and improve the perpendicularity of the pile foundation, the coordinates and the elevation of the pile foundation are positioned through the positioning assembly, the positioning accuracy of pile foundation construction is improved, the construction efficiency of overall hoisting of a subsequent photovoltaic support and a photovoltaic assembly is improved, and the construction cost is reduced. The auxiliary device not only can meet site construction requirements, but also can ensure technicality, economical efficiency and reasonability, and provides reference basis for subsequent construction accumulation in the field.

The embodiment of the application discloses a cross column processing device and a processing method. The device comprises a jig support plate, a door type suspension support frame, a vertical pressing jack and an angle adjusting jack. In the process of preparing the cross column, the H-shaped steel can be arranged on the jig support plate, the T-shaped steel is arranged on the H-shaped steel, the vertical section of the T-shaped steel is arranged on the horizontal section of the H-shaped steel, then the vertical pressing jack is started, the vertical section of the T-shaped steel can be closely combined with the horizontal section of the H-shaped steel, the gap between the vertical section of the T-shaped steel and the horizontal section of the H-shaped steel is greatly reduced, and the angle adjusting jack can be started. The angle adjusting jack can drive the T-shaped steel to rotate relative to the H-shaped steel, that is, the setting angle of the T-shaped steel can be adjusted. The cross column processed by the cross column processing device provided by the embodiment of the application has higher precision and more excellent performance, and the preparation efficiency of the cross column can be improved.

The invention provides a pile head depth measuring device, which comprises a drill rod ruler, and is characterized in that the drill rod ruler is inserted into a supporting unit, slides along the vertical direction of the supporting unit, is connected with an impact assembly for driving the drill rod ruler to move downwards, and is provided with a depth measuring assembly. The drill rod ruler is inserted into the supporting unit, the drill rod ruler is controlled by the supporting unit to be kept in a vertical state all the time, and the perpendicularity of the drill rod penetrating into the soil is improved; the sight line and the scale can be kept horizontal without bending down during reading, and the reading error is reduced; meanwhile, the impact ring is detachable, the weight of the impact ring can be increased or reduced according to geological conditions, and the soil penetrating efficiency of the drill ruler is further improved; the folding function is achieved, the size is small after folding, and turnover, storage and carrying are convenient.

The present application relates to complex stratum pile foundation construction technology field, disclose a kind of riprapping stratum full casing rotary and rotary drilling combined hole construction method, comprising the following steps: leveling construction ground;Pile position lofting is carried out, and guiding positioning structure is set;First section casing with grouting passage is installed on full casing rotary drilling machine, grouting passage is used for grouting;Through full casing rotary drilling machine clamping casing, drive casing press into riprapping stratum, while rotary drilling carries out soil taking;Slurry is injected by grouting passage, and riprapping body outside casing is consolidated to form annular consolidated body;The elevation difference between the soil taking surface of rotary drilling and the bottom end of casing is controlled to be within the preset range, and the following protection wall is formed;Lengthen next section casing, and connect adjacent grouting passage;Until casing penetrates riprapping layer and main sand layer and enters lower stable layer.The present application can solve the problems of difficult riprapping stratum hole forming, easy hole collapse, easy grouting leakage and easy drill sticking.

The application discloses a single-knife digital three-side cutting paper cutting machine and belongs to the technical field of paper cutting machines. The paper cutting machine comprises a rack, a first conveying belt, a second conveying belt, a clamping assembly and a cutting assembly. The cutting assembly, the first conveying belt and the second conveying belt are arranged in the same direction and in a three-side half-enclosed layout, and a horizontal moving channel is formed in the middle. The clamping assembly is arranged in the horizontal moving channel and comprises a material taking sliding rail, a material taking screw rod, a sliding seat, a rotating mechanism and a material taking mechanism. The material taking mechanism can move along the horizontal moving channel and clamp materials. The rotating mechanism drives the material taking mechanism to rotate the materials by 90 degrees. The cutting assembly is used for sequentially completing three-edge cutting. The application solves the problems of poor positioning precision, low efficiency of manual rotation of the existing single-knife paper cutting machine, high cost and poor adaptability of traditional three-side cutting knives, realizes sequential cutting of books in a three-edge full-automatic, high-precision and high-quality mode, and has compact structure and is suitable for multi-variety batch production.

The high-stability spring convenient to disassemble and assemble structurally comprises a base, a spring body and a connecting cavity, the base is perpendicular to the spring body, and the connecting cavity perpendicularly penetrates through the circle center point area of the spring body and is communicated with the center of the surface layer of the base; after the base is further improved, the parallelism of the loading plate on a mechanical facility can be improved and inclination can be prevented according to the convex blocks of the parallel bottom plate, and then the perpendicularity of the spring main body can be improved according to the supporting and limiting of the bottom of the bearing body, so that the spring can assist the operation of mechanical parts with the characteristic of high stability; meanwhile, a bolt in the center of the bottom can be used for facilitating connection of a mechanical part and the bottom of the spring body, then the characteristic of convenient disassembly and assembly is achieved, and finally, according to solid modules parallel to the bottom plate and the edge of the carrying plate, after the mechanical part is separated from the spring, the spring body and the base can be horizontally dragged out of a mechanical facility. And the dismounting and mounting stability effect of the spring body is improved.

A kind of end face precision grinding rotary clamping positioning device suitable for cylindrical spring, it is specially used in the equipment of cylindrical spring end face precision grinding, including spring clamping positioning piece, cylindrical spring rotary clamping piece, center height automatic adjusting piece, installation rack, spring clamping positioning device, for spring clamping fixation to positioning V-shaped block;Cylindrical spring rotary clamping device, for realizing that spring end face grinding machine tool can rotate cylindrical spring in grinding process;Center height automatic adjusting device, for realizing automatic adjustment of cylindrical spring rotary clamping device center height;Installation rack, for installing spring clamping positioning tool, cylindrical spring rotary clamping device and center height automatic adjusting device, to help spring to be placed to spring positioning tool for the accurate positioning of spring, firmly support each device.

The utility model relates to the technical field of assembly bolts, in particular to a conical boss gasket and an assembly bolt, the conical boss gasket comprises a conical gasket body and a boss, the conical gasket body is provided with a first through hole, and the conical gasket body is provided with an inner inclined face and an outer inclined face which are oppositely arranged in the axial direction of the conical gasket body; the boss extends from the inner inclined face to the direction away from the outer inclined face and is provided with a second through hole communicating with the first through hole. Compared with a traditional conical gasket, the conical boss gasket is used in cooperation with the bolt body, in the locking process of the combined bolt, the conical boss gasket moves downwards in the Z direction, it is guaranteed that the combined bolt has good perpendicularity, the combined bolt is prevented from inclining, radial and axial limiting of the combined bolt is achieved, and the service life of the combined bolt is prolonged. Therefore, the connecting piece is locked and fixed with the connected piece.

This invention relates to the field of quartz wafer manufacturing technology, and discloses a laser-induced etching process for quartz wafers and a quartz device. A hard mask is used to form a high-frequency (thin wafer), and laser-induced etching is employed to form the wafer outline. The quartz wafer processing can be completed in a single deposition and photolithography process, avoiding the multiple depositions of precious metal Au films required in photolithography, thus minimizing the amount of Au used and significantly reducing processing costs. Furthermore, quartz wafers processed using this process exhibit good side perpendicularity, high dimensional accuracy, and high quality and stability.

A prefabricated pile retaining wall composite formwork reinforcing structure, including prefabricated concrete slab and cast-in-place concrete layer, the prefabricated concrete slab is arranged between adjacent piles, the cast-in-place concrete layer is arranged between upper and lower encloses the purlin and is located the outside of pile, prefabricated concrete slab, the cast-in-place concrete layer can be formed with the whole and is located between upper and lower encloses the purlin, on the one hand, the cast-in-place concrete layer front, back two sides are supported by prefabricated concrete slab, cast-in-place concrete formwork layer, and both sides of the formwork structure are more stable, the flatness and perpendicularity of cast-in-place concrete layer surface are better, meet the permanent landscape slope structure to the appearance and quality requirement, on the other hand, the prefabricated concrete slab in the built-in connection of pile and encloses the purlin, and structural collapse will not be caused by stress concentration, and then make the cast-in-place concrete panel perpendicularity and quality located on its outside can meet the permanent landscape slope structure requirement.

The invention relates to a non-magnetic insulation angle fine adjustment mechanism and method suitable for a high-temperature chamber, and the mechanism comprises a pedestal which is installed in the chamber and can adjust the installation angle, the pedestal is fixedly provided with a fine adjustment element which can elastically deform, and the fine adjustment element is connected with a to-be-adjusted component. A pulling cable is connected to the component to be adjusted, the pulling cable extends out of the cavity and is connected with a fine adjustment actuating mechanism outside the cavity, the pulling stress on the pulling cable is adjusted through the fine adjustment actuating mechanism, so that the fine adjustment element generates elastic deformation, and adjustment of the angle and / or position of the component to be adjusted is achieved. Fine adjustment operation can be carried out outside the high-temperature cavity, and the fine adjustment mechanism is in an elastic loading state in the whole adjustment range without clearance. The whole device does not contain any ferromagnetic material and can work for a long time in a high-temperature environment.

The disclosed etching method includes a process of forming a deposit on the first region and / or the second region by generating a plasma from a processing gas and etching the second region. The process includes processes (c1) to (c4). In process (c1), a source high-frequency signal having a first frequency is supplied during a first period. In process (c2), the power level of the source high-frequency signal is made lower than the first period during a second period that alternates with the first period. In process (c3), a bias high-frequency signal having a second frequency lower than the first frequency is supplied to the substrate support portion during a part of the first period. In process (c4), a sequence of voltage pulses having a third frequency different from the first frequency and the second frequency is applied to the substrate support portion during a part of the second period.

The utility model relates to building construction structure technical field especially is a kind of protective fence linear precision positioning tool, including support formwork main body, the support formwork main body includes several side plate assemblies, the side plate assembly between adjacent is assembled through connecting piece cooperation, the upper end of the support formwork main body is provided with positioning assembly, positioning assembly is limitedly provided with stand, and the side of the stand is provided with several supporting members;The side plate assembly includes several stainless steel side plates, each The stainless steel side plate is provided with butt joint structure, and the stainless steel side plate between upper and lower adjacent is matched butt joint through butt joint structure, the utility model is positioned by the cooperation of positioning assembly and supporting member, and the four side edges of stand are positioned and supported, avoid the influence that traditional manual pulling line positioning is affected by topography undulation, construction disturbance, significantly improve the perpendicularity of stand and the smoothness of overall linear, effectively satisfy the acceptance requirement that high-speed railway protective fence is smooth and straight and beautiful.

The utility model provides an automatic deviation correction drilling guide device for bridge and tunnel engineering anchor rod hole construction, and relates to the technical field of drilling guide. A base is mounted on the partition plate, a middle cylinder is mounted above the base, a top seat is mounted at the upper end of the middle cylinder and connected with the base through bolts, guide cylinders are mounted in the top seat, the middle cylinder and the base, bearings are mounted in the top seat, and the guide cylinders are sleeved with the bearings; by means of an automatic deviation rectifying structure composed of the lower fixing block, the elastic telescopic rod, the rail rod, the contact wheel and the like, when a drill bit deviates, the contact wheel is extruded to be in linkage with the elastic telescopic rod to reversely apply force to adjust the direction, and the drilling perpendicularity and precision are improved; dustproof rings and sealing rings in the base and the top seat form a multi-layer dustproof sealing structure, dust is prevented from entering the device, components are protected, the service life is prolonged, and the construction environment is improved; vibration impact is absorbed through a buffering and damping system composed of a buffering ring and a spring in the middle cylinder, and the drilling quality is improved.

The utility model discloses an LCD projection ray machine which comprises a shell, a light source assembly, a focusing imaging assembly, a lens and a printing forming platform. The light source assembly is connected with the shell and comprises a COB light source, and light emitted by the COB light source irradiates into the shell; the focusing imaging assembly is arranged in the shell; light emitted by the light source assembly is received; the focusing imaging assembly comprises a first Fresnel lens, an LCD screen and a second Fresnel lens. The first Fresnel lens, the LCD screen and the second Fresnel lens are sequentially arranged in a stacked mode. Light emitted by the light source assembly sequentially penetrates through the first Fresnel lens, the LCD screen and the second Fresnel lens. The lens is connected with the shell and receives light transmitted by the Fresnel lens II; the printing forming platform is located below the lens and right faces the light emitting end of the lens. The projection light machine is good in heat dissipation effect, and light with different wavelengths can be subjected to light curing printing at the same time.