1097results about How to "Reasonable structural design" patented technology

The invention relates to the technical field of waste plastic treatment, in particular to a waste plastic grading carbonization device and a waste plastic treatment method. The waste plastic grading carbonization device comprises a feeding hopper, a crushing device, a grinding device, a screening device, a catalyst self-adaptive proportioning device, a first spiral discharging machine, a first-stage carbonization chamber, a second-stage carbonization chamber, an activation chamber, a second spiral discharging machine, a solid product collecting device, a liquefaction device, a liquefied product collecting device, a cooling water circulating device and a third spiral discharging machine, a material returning bin and a tail gas treatment device. According to the invention, through the collaborative innovation of'grading carbonization 'and'catalyst self-adaptive proportioning device', the problems of incomplete and non-uniform carbonization of the waste plastics, inadequate utilization of gas products and the like in the pyrolysis process of the waste plastics are solved, and an industrial feasible path is provided for chemical recovery of the waste plastics; the device is reasonable in overall structural design and high in treatment energy efficiency, and continuous, sufficient and efficient pyrolysis and high-value conversion of the waste plastics are achieved.

The utility model relates to the technical field of endurance life test of harmonic reducers, in particular to endurance life test equipment for harmonic reducers. The endurance life experiment equipment for the harmonic reducer comprises a workbench, a first moving carrier, a second moving carrier, a fixed carrier, a load device and a torque input mechanism, the first moving carrier, the second moving carrier and the fixed carrier are sequentially arranged at the upper end of the workbench at intervals, the torque input mechanism is installed on the first moving carrier, and the load device is installed on the first moving carrier. The second mobile carrier is used for installing a harmonic reducer to be detected, the load device is installed on the fixed carrier, the shaft end of an output shaft of the torque input mechanism is provided with the first torque detection device and is connected with an input shaft of the harmonic reducer through the first torque detection device, and an input shaft of the load device is used for being connected with an output shaft of the harmonic reducer. The device has the advantages of reasonable structural design, high test efficiency, stable and reliable test process and relatively low use cost.

The vacuum cup unlocking structure is characterized in that the vacuum cup unlocking structure comprises a cup cover, a circuit board and a battery electrically connected with the circuit board are arranged in the cup cover, a motor is fixedly arranged on the cup cover, the motor is electrically connected with the circuit board, the output end of the motor is connected with a cam, and the cam is electrically connected with the circuit board. A cam is arranged in the cup cover, a sliding part is further arranged in the movement range of the cam, the sliding part is arranged in the cup cover in a sliding mode, a lock hook is further arranged in the movement range of the sliding part, the lock hook is rotationally arranged in the cup cover, and the acting end of the lock hook is exposed out of the cup cover; by the adoption of the method, intelligent unlocking of the cup cover can be achieved through cooperation of the cam, the sliding part and the lock hook, resistance generated during unlocking can be reduced through the cooperation mode of the sliding part and the lock hook, the use stability of the unlocking structure is ensured, meanwhile, the torsion requirement of the motor can be lowered, and therefore the production cost is reduced, and the structural design is reasonable and simpler.

This application relates to a sprayer capable of mounting different agricultural implements, belonging to the technical field of sprayers. It includes a carrier with a detachable support at its rear. The support is equipped with a liquid storage tank, a nozzle, and a blade. The liquid storage tank is fixed to the top of the support, and a water supply pipe connects the tank and the nozzle. A first vertical tube is mounted on the support, running vertically. An electric cylinder is fixed to the first vertical tube, also running vertically. A second vertical tube is fixed to the blade, running vertically with its top end fitted onto the outer wall of the first vertical tube. The second vertical tube slides along the length of the first vertical tube. The piston end of the electric cylinder is fixedly connected to the outer wall of the second vertical tube. This application improves the efficiency of field operations.

The utility model provides a sewage membrane filter device with automatic backwash function relates to sewage treatment equipment technical field, and this device includes filter jar body, the membrane filter subassembly of being immersed in jar body, and water inlet pipeline, water outlet pipeline and sludge discharge pipeline. Its core improvement is integrated with a set of intelligent automatic backwash system, and this system is constituted by backwash water supply pipeline, gas water collaborative flushing unit, parameter detection unit and intelligent control unit. The gas water collaborative flushing unit includes the micropore aerator of being established in the membrane subassembly below jar body bottom, is used for generating tiny air bubble to carry out physical scrubbing to membrane surface, backwash water supply pipeline is connected water outlet pipe, can pump into membrane subassembly water production side with water production reversely. Control unit is based on sensor signal such as transmembrane pressure difference, and the automatic switching and collaborative operation of intelligent control gas washing, water backwash and sludge discharge process, thereby realize efficient, energy -conserving, full -automatic membrane pollution cleaning, significantly prolong the life of membrane and reduce operation maintenance cost.

The application discloses a kind of cleaning machines for liquid bag, including transport mechanism, spray mechanism and water storage tank.Transmission belt and water receiving tank are provided to transport mechanism, and spray mechanism includes upper and lower spray assembly, water pump and corresponding switch valve.Water storage tank is located below water receiving tank, is connected by pipeline with first filter screen of inclined detachable, and second filter screen is arranged in the tank.The bottom of the tank has water outlet and drain outlet: water outlet is connected with water pump below first filter screen, and drain outlet is connected with outside above first filter screen.When working, upper and lower spray assembly bidirectionally washes liquid bag; first filter screen is washed by water flow from water receiving tank, and impurities are guided to accumulate side; second filter screen is washed by water flow from pipeline and inlet, and impurities are guided to drain outlet and discharged.The utility model realizes efficient separation and automatic discharge of impurities by double inclined filter screen design, cooperates with circulating water system, significantly improves water resource utilization rate while ensuring cleaning effect, and effectively prevents secondary pollution.

This utility model discloses a low-temperature high-frequency surgical scalpel, comprising: a handheld part; and a scalpel head body mounted on the handheld part. The handheld part is used to connect a power source, enabling the scalpel head body to perform high-frequency cutting. The scalpel head body includes a blade surface and a cutting edge, with the cutting edge surrounding the blade surface and having a beveled structure. The surface of the blade surface is coated with an insulating coating. This allows for low-temperature, high-efficiency cutting, reducing thermal damage to tissues.

This utility model discloses a magnetic separation mechanism for a vertical ring magnetic separator, including a shell, a feed inlet, and a discharge outlet. The feed inlet is located on the top left side of the shell, and the discharge outlet is located on the right side of the shell. Two sets of vibration components are arranged at the front and rear of the top of the inner wall of the shell. A vibrating plate is arranged inside the vibration component. A magnetic ring is arranged on the side of the shell away from the vibrating plate. A first rotating wheel is arranged on the right side of the shell. A first conveyor belt is connected between the outer wall of the magnetic ring and the first rotating wheel. A rotatable cam is arranged at the bottom end of the first conveyor belt. A second rotating wheel is arranged on the side of the shell away from the magnetic ring. A second conveyor belt is arranged on the outer wall of the second rotating wheel. A sand discharge component is arranged at the bottom of the shell. The counterclockwise rotation of the first conveyor belt in conjunction with the magnetic ring and the clockwise rotation of the second conveyor belt in conjunction with the second rotating wheel enable ferrous materials and waste materials to be accurately transported to different positions, ensuring the magnetic separation effect.

The utility model relates to a pig house excrement treatment system belongs to the field of livestock breeding technology, the system includes the dung pool, and is provided with the dung scraper and water and electricity supply system in the dung pool, the dung pool is V type structure and is provided with U type groove in the bottom, is provided with the plug disc chain in the U type groove, is provided with the dung scraper between the two side walls of dung pool, water and electricity supply system sets up one end in the dung pool to be provided with in -place inductive point and travel switch K1, the utility model discloses the cooperation of the dung scraper and plug disc chain conveying equipment can automatically, high -efficiently clean up the excrement in the pig house, need not manual frequent operation, has improved the cleaning efficiency, reduced the manpower cost, compared with prior art has the remarkable promotion.

The utility model discloses an RTO safe air supply system which comprises an air inlet pipe, an emergency cut-off valve is arranged on the air inlet pipe, a main pipe branch is arranged on the air inlet pipe, a fresh air valve is arranged on the main pipe branch, the tail end of the air inlet pipe is connected with an RTO main fan, a pressure transmitter is arranged on a pipeline at the front end of the RTO main fan, the RTO main fan is connected with an RTO furnace, and pressure difference transmitters are arranged on an inlet and an outlet of the RTO furnace. And an outlet of the RTO furnace is connected with an air outlet pipe. The RTO furnace air supply system solves the problems that in the prior art, RTO furnace air supply system equipment is high in operation failure rate, and potential safety hazards exist.

The application provides a fixed installation tray and system for electric resistance measurement of an electric igniter, a plurality of parallelly arranged electric igniter installation slots are arranged in the tray body, a plurality of parallelly arranged wire installation slots are arranged in the tray body, and two wire installation slots are arranged corresponding to each electric igniter installation slot; an electric igniter fixing device is arranged in each electric igniter installation slot, and a wire fixing device is arranged in each wire installation slot. The fixed installation tray has a reasonable overall structure, can conveniently and stably fix the electric igniter to be detected, and can clamp and fix the wire of the electric igniter to be detected, so as to meet the requirement of electric resistance measurement of the electric igniter to be detected. The realization of automatic operation and measurement of the electric resistance of the electric igniter to be detected is facilitated, the accident rate is reduced, and the possibility of personal injury of workers is reduced.

The utility model relates to a dual-purpose die-casting connecting beam which comprises a beam body. The top and the bottom of the beam body are detachably connected with a lifting appliance and a supporting leg respectively, the left end and the right end of the beam body are provided with an inserting part and an inserted part respectively, the inserting part can be matched with the inserted part in an inserted mode, a screen connecting groove is formed in the front side of the beam body in a sunken mode, a screen hanging piece is arranged in the screen connecting groove, and the screen hanging piece is connected with the beam body. The beam body is further provided with a first gradienter and a second gradienter, an observation window of the first gradienter faces upwards, and an observation window of the second gradienter faces forwards. Through the arrangement, the dual-purpose die-casting connecting beam can be used as a hanging beam and can also be used as a ground beam, a user can select according to actual use scenes, and the dual-purpose die-casting connecting beam is reasonable in structural design, convenient to use and rich in functionality.

This invention discloses a rapid negative pressure pretreatment machine for fruits and vegetables, comprising a fixed frame and a negative pressure chamber. The negative pressure chamber is fixedly installed inside the fixed frame. A cold air assembly is installed at the bottom of the inner wall of the fixed frame, and a conveyor belt is fixedly installed near the top of the inner wall of the fixed frame to transport fruits and vegetables into the negative pressure chamber. A reciprocating moving assembly is fixedly installed on the conveyor belt. This invention solves the problems of uneven precooling and blind spots in existing negative pressure pretreatment machines for fruits and vegetables. Through the linkage design of the reciprocating moving assembly and the cold air assembly, combined with the flipping action of the lever, two sets of symmetrically arranged cold air nozzles are located at the top and bottom of the conveyor belt, respectively. With the reciprocating swing and linear movement, and the lever flipping the fruits and vegetables, the upper and lower surfaces, sides, and contact parts of the fruits and vegetables can be fully contacted with the cold air, ensuring uniform cooling of the same batch of fruits and vegetables. This solves the problems of large differences in cooling rate and poor negative pressure treatment effect caused by traditional precooling.

This utility model discloses an oven for pre-dehydrating raw materials used in the industrial preparation of hexagonal boron nitride, comprising an oven body, a support frame, shelves, a material tray, and a central door pillar. The oven body has doors at both the front and rear, forming a double-door structure. The multi-layer heating tube structure is arranged parallel to the upper and lower surfaces of the oven body. Two central door pillars are symmetrically arranged inside the oven body, adjacent to the front and rear doors respectively. Multiple sets of support frames are provided, each set at the same height. Slides are installed on the shelves, and the material tray is placed on the slides. This utility model provides an oven for pre-dehydrating raw materials used in the industrial preparation of hexagonal boron nitride, with a simple and reasonable structural design, which can significantly improve the gas flow within the oven after application.

This utility model provides a protective device for construction engineering. The protective device includes: a bottom frame, a monitoring structure, a enclosure structure, and a bottom protective structure. The enclosure structure includes corner pieces, four of which are fixedly connected to the four corners of the bottom frame. Each of the four corner pieces has a fixedly connected column at its top. A first enclosure component is positioned between two columns arranged front-to-back, and a second enclosure component is positioned between two columns arranged left-to-right. The monitoring structure includes a first mounting component and a second mounting component, two of each type arranged longitudinally. This protective device for construction engineering provides the advantage of being able to monitor people or objects that accidentally fall into the enclosure and transmit the data to workers, enabling timely detection and handling.

The utility model discloses a visual PIN needle detection equipment, including test board, the fixture seat of setting on test board and the CCD subassembly of setting on the fixture seat top, the CCD subassembly includes the coaxial light source, telecentric lens and CCD camera who sets gradually in vertical direction away from fixture seat, and CCD camera, telecentric lens and coaxial light source are on the same axis, and the light shield of setting the back and two side masks of test board is provided with on test board, and the connecting interface is provided with on test board, and the fixture seat includes the base and the positioning fixture of detachable setting on the base, and the positioning fixture is used for positioning installation detected component, and the support plate for supporting base is provided with on test board, and the sensor is provided with on the both sides of positioning fixture of support plate. The utility model discloses reasonable in structure design, and through the visual configuration of CCD camera + telecentric lens + coaxial light source, can realize to PIN needle and carry out detection, and thoroughly solved the problem that PIN needle is easy to wear in other detection mode among existing.

The application discloses a roof integrated automatic mounting system and a use method thereof, which comprises an installation operation X-direction sliding rail, a material taking operation X-direction sliding rail, an installation operation frame, an installation manipulator, a material taking manipulator, a transfer operation table and a roof integrated storage rack; the installation operation X-direction sliding rail and the material taking operation X-direction sliding rail are horizontally arranged and are both installed above an operation surface; the material taking manipulator is installed on the material taking operation X-direction sliding rail, and the transfer operation table and the roof integrated storage rack are arranged below the material taking operation X-direction sliding rail; the installation operation frame is installed on the installation operation X-direction sliding rail, the installation operation frame is internally provided with an installation operation Y-direction sliding rail which is perpendicular to the installation operation X-direction sliding rail, the installation manipulator is installed on the installation operation Y-direction sliding rail, the installation manipulator can grab the roof integration from the transfer operation table, and the state of the roof integration on the transfer operation table is same as the installation state. The system has reasonable structure design, high operation efficiency and good application prospect.

This invention relates to the field of cable aluminum foil coil processing technology, and particularly to an integrated equipment and method for forming and coating cable aluminum foil coils based on a conical mold. The equipment includes a transport frame and coating wheels. A mold range adjustment mechanism is provided on the outer side of the transport frame, and a position adjustment mechanism is provided on the outer side of the conical mold range adjustment mechanism. The conical mold range adjustment mechanism includes a rotating column, a stabilizing plate fixedly connected to the top of the rotating column, and a conical mold piece on the top of the stabilizing plate. A fixing rod is fixedly connected inside the rotating column, and a movable tube is fixedly connected to the outer side of the fixing rod. In this invention, by adjusting the speed of a primary motor to change the range between the conical mold pieces, and in conjunction with the synergistic effect of the position adjustment mechanism, precise adjustment of the mold range and position can be quickly completed without the need for separate forming and coating processes, reducing equipment space requirements and process connection time.

This invention discloses a double-helix composite blade long-diameter-maintaining coring drill bit and its manufacturing method, belonging to the field of geological drilling coring equipment. The drill bit includes a drill bit steel body, double-helix composite blades, and a coring inner cylinder. The double-helix composite blades are arranged in a double-helix staggered distribution, including polycrystalline diamond cutting blades and surface-impregnated diamond grinding blades. The polycrystalline diamond cutting blades have a three-dimensional helical forward-inclined structure, embedded with frustum-shaped polycrystalline diamond sheets and triangular polycrystalline diamonds. The surface-impregnated diamond grinding blades have an axial helical structure, equipped with low-temperature surface-impregnated matrix blocks and surface-impregnated large diamond particles. The outer wall surface of the blades is equipped with a helical long-diameter-maintaining structure. The manufacturing method integrates three processes: pressureless impregnation, hot-pressing sintering, and brazing, to prepare the blade matrix base and the surface-impregnated matrix blocks respectively, and then weld them into shape. This invention, through optimized structural design and multi-process synergy, significantly improves the coring efficiency, wear resistance, and structural stability of the drill bit in complex formations, achieving long-term diameter maintenance and high-efficiency drilling.

This utility model provides a surface modification treatment device for edge banding strips, comprising a chassis and a centrifugal fan, transformer, electrode assembly, lifting drive cylinder, and control box mounted on the chassis. The top of the chassis has a groove with a suction hole at the bottom. The centrifugal fan is connected to an external power source, its inlet is connected to the suction hole, and its outlet is connected to an external environmental emission channel. The transformer is electrically connected to the control box, its power input terminal is connected to an external power source, and its power output terminal is connected to the electrode assembly. The electrode assembly includes an electrode protective cover, a positive electrode assembly installed inside the electrode protective cover, and a negative electrode tube disposed in the groove. The positive electrode assembly is connected to the high-voltage side power output terminal of the transformer; the negative electrode tube is connected to the low-voltage side power output terminal of the transformer. This utility model is safe, convenient, and environmentally friendly to operate, and provides high efficiency and good results in edge banding strip modification treatment, significantly improving the production efficiency and quality of edge banding strips, making it suitable for widespread application.

The paper handle forming device comprises a former and a shaper; the former comprises a forming nozzle, and a guide structure is arranged on the side of the forming nozzle away from the shaper; the forming nozzle comprises a base part, and guide eaves are arranged on the two sides of the base part respectively, one of the guide eaves is outside the other guide eave, and a lap joint structure is formed between the two guide eaves; the guide structure comprises an arc-shaped guide plate, inner collection eaves are arranged on the two sides of the guide plate in the width direction respectively, the spacing between the two inner collection eaves is gradually reduced, each inner collection eave is connected with the corresponding guide eave, so that the inner collection eave and the guide eave form a continuous guide groove inside, and a wire tube is arranged on the upper surface of the guide plate and close to the two inner collection eaves. In the paper handle forming device, the former can form the paper strip into a structure with the two sides folded, and two paper ropes are covered in the structure, the shaper can further shape the product, and the produced handle product has high strength and good tensile capacity.

The application provides an automatic processing equipment and processing technology of hollow moxa column, which is applied to the hole processing technical field of moxa and has the technical scheme as follows: a workbench is provided with an upper feeding mechanism for adjusting the direction of the moxa column to make the moxa column stand vertically and introducing the vertically standing moxa column into the next work module; the workbench is provided with a clamping translation mechanism for reciprocatingly sliding the vertically standing moxa column; the workbench is provided with a round hole making mechanism for making a round hole at the end of the moxa column; and the workbench is provided with a material discharging mechanism for making the hollow moxa column separated from the clamping translation mechanism and falling into a material box after the hole making is completed. The application has the technical effects that the equipment structure is reasonable, the functions of feeding, drilling and discharging are combined, the automatic degree of the equipment is improved, the labor intensity is reduced, the personal harm of the operator is reduced, time and labor are saved, and the work efficiency is improved.

The utility model discloses a kind of feed additive granule cooling equipment, including bearing base and cooling roller, the top end both sides of bearing base are vertically installed with support seat, the opposite side wall of two support seat is installed with carousel;The side wall of one side carousel is installed with fixed disc a, the side wall of the other side carousel is installed with fixed disc b, the cooling roller is assembled between fixed disc a and fixed disc b;The setting of this feed additive granule cooling equipment, structure design is reasonable;By setting cooling fin on the inner wall of cooling roller upper and lower two sides, and setting ventilation hole and assembling fan assembly outside drum, good ventilation and heat dissipation structure is formed.Fan assembly forced ventilation, cooperate cooling fin to increase heat dissipation area, so that feed additive granule can be in contact with cold air in the process of drum rotation, greatly improve cooling efficiency.

The utility model relates to medical supplies technical field especially, a kind of injection mould for batch production of digestive endoscope mouth pad, the utility model mainly is constituted by annular support, fixed mould, radial displacement drive assembly and movable mould, radial displacement drive assembly is used to drive movable mould to carry out radial displacement towards or away from corresponding fixed mould, the bottom plate of annular support is opened in circumferential direction with multiple blanking ports, blanking port is located below corresponding fixed mould, first core block for forming endoscope through hole is equipped in fixed mould, first core block can be displaced to first storage groove under the driving of first micro push rod when demolding, second core block for forming lightening hole is equipped in movable mould, second core block can be displaced to second storage groove under the driving of second micro push rod when demolding, by this mode, the digestive endoscope mouth pad formed can be automatically demoulded and dropped under the action of its gravity, and fall into the collection area below through blanking port.

The utility model discloses a kind of lining blanking machine for square tube lining plate welding, belong to welding auxiliary equipment technical field, the blanking machine mainly includes storage rack and push mechanism, storage rack is formed by first carriage, second carriage and the connecting end plate of both ends, form a slightly wider lining blanking passage, for horizontal stacking lining plate, push mechanism is fixed in storage rack bottom end side, its execution end is aligned with the lowermost lining plate of blanking passage, by cylinder driving connecting rod and L type poking piece mechanism, the lowermost lining plate is horizontally pushed out;Upper lining plate is automatically dropped to supplement under the action of gravity in succession, the utility model realizes the automatic, continuous, accurate blanking of lining plate, effectively improve the automation degree and production efficiency of square tube lining plate welding, reduce manual operation intensity and security risk.

The application provides a component transfer auxiliary equipment and method, which comprises a carrier, a base frame, a transfer mechanism and an unlocking mechanism. The carrier comprises a shell and at least two locking assemblies, the shell is provided with a containing cavity, an unlocking channel and a moving cavity, the moving block of the locking assembly can be clamped with a component, and an elastic member provides elastic clamping force; the base frame is arranged on one side of an external transmission streamline to provide support for each mechanism; the transfer mechanism drives the carrier and the component to move through a sliding frame and a clamping assembly; the receiving assembly of the unlocking mechanism receives the carrier, the unlocking assembly drives the moving block to slide through an unlocking arm, and the clamping on the component is released. The equipment has reasonable structure and convenient operation, and each mechanism has good cooperation, so that the automation degree and precision of transfer can be improved, the manual strength can be reduced, the transfer yield can be improved, the equipment is suitable for components of various specifications, and has wide popularization prospect.

The utility model discloses a 360-degree rotary scanning device for a triangular area of a steel rail welding seam, which relates to the technical field of rail performance testing and comprises a base I, a handle, a base II, an adjusting rod, a connecting rod, a belt pulley transmission mechanism and a rotary probe, the second base is connected to the top of the base through the connecting rod, the adjusting rod is rotationally connected with the first base, the rotating probe is rotationally connected with the second base, one end of the adjusting rod is connected with the rotating probe through the belt wheel transmission mechanism, and the other end of the adjusting rod is connected with the rotating probe through the belt wheel transmission mechanism. The adjusting rod is rotated to drive the rotary probe to rotate through the transmission of the belt pulley transmission mechanism; the position and the angle of the rotary probe can be adjusted by 360 degrees through the moving device and the rotary adjusting rod. The angle and the position of the rotary probe can be freely adjusted within the range of 360 degrees so as to meet the detection requirements of different welding seam triangular areas, all-directional rotary scanning is achieved, and the detection precision and reliability are improved.

This utility model relates to a double-ended makeup contour stick, addressing the technical problem that existing similar products rarely adopt a double-ended structure design that combines lipstick or other cream-based products, resulting in a large volume, especially due to the shortcomings of the spiral structure design. The contour stick has a sponge for contouring at one end and a contouring paste at the other end. The key feature is that a middle section is fixed at the opening of one end of the pen body. A tip extends out of and engages with the inner diameter of the opening at that end of the middle section. Rotation of the tip causes a bead inside the tip to rotate, simultaneously causing the bead to extend and retract, and the paste on the bead to extend or retract into the tip. A threaded ring is fixed to the inner wall of the middle section below the tip. The threaded section of the other end of the bead in the middle section below the tip connects to the inner thread of the threaded ring. The bead moves up and down within the threaded ring by rotation, causing the bead to change position within the tip and the middle section.

The utility model discloses a kind of wire laying positioning control point fixed adjusting device, including the square main frame surrounded by four rectangular tubes, the upper side middle part of each rectangular tube is embedded with level bubble, the inside of main frame is vertically provided with guide plate, first strip guide groove is provided on guide plate along length direction, crossbar of cross is arranged in main frame, second strip guide groove is provided on crossbar along length direction, the both ends of crossbar are respectively fixed in the first strip guide groove of two sides by fastening bolt, control point bolt is fastened and arranged by passing through second strip guide groove at the cross point of two crossbars, the four corners of main frame are vertically provided with through-hole, screw rod is arranged in through-hole, the upper end of screw rod is fastened on main frame, the lower end of screw rod is threadedly connected sleeve, sleeve is embedded in stable stratum or structure body.The utility model is strong in stability, high in accuracy, wide in applicability, and convenient to operate and maintain.