29results about How to "Reduce construction intensity" patented technology

The invention relates to the technical field of heat distribution pipelines, and discloses a quick-connection water-leakage-proof heat distribution pipeline which comprises a heat distribution pipeline body, and a first flange is fixedly installed at one end of the heat distribution pipeline body. According to the heat distribution pipeline capable of being quickly connected and preventing water leakage, through matched arrangement of the heat distribution pipeline bodies, the first flanges, the second flanges, the L-shaped grabbing plates, bevel gears and hand wheels, when the heat distribution pipeline is used, the first flange plates and the second flanges at one ends of the two heat distribution pipelines are in butt joint, and then the L-shaped grabbing plates can be clamped into grooves in the second flanges by rotating the L-shaped grabbing plates; then a hand wheel is shaken to drive a rotating shaft and a bevel gear to rotate and drive a bevel gear ring and a gear ring which are meshed to rotate at the same time, then the gear ring drives a gear and a threaded rod to rotate, then the threaded rod drives a U-shaped plate to move, and at the moment, an L-shaped grabbing plate fixes a first flange and a second flange together, so that dismounting and mounting are convenient; and the operation difficulty and the construction intensity of workers are effectively reduced.

The invention relates to the technical field of oilfield chemistry, and provides a temperature-resistant and salt-resistant copolymer with filtration loss reduction, viscosity increasing and lubricating properties, and a preparation method and application thereof. The preparation method of the copolymer comprises the step of enabling raw material components including a natural polymer material, organic acid anhydride, sulfonate containing vinyl, an anionic monomer, a crosslinking monomer and an initiator to react in a solvent to prepare the temperature-resistant and salt-resistant copolymer with filtrate loss reduction, viscosity increasing and lubricating properties. The copolymer provided by the invention has excellent temperature resistance and salt resistance, and has good filtration loss reduction, viscosity increasing and lubricating properties. When the copolymer provided by the invention is used in a conventional drilling fluid system capable of resisting the temperature of 180 DEG C, the dosage of drilling fluid treating agents such as a filtrate reducer, a tackifier and a lubricant can be obviously reduced on the premise of keeping equivalent performance, and the formula of the high-temperature-resistant drilling fluid system is greatly simplified.

The utility model discloses an embedded outer wall decoration curtain wall structure, which relates to the technical field of curtain walls and comprises an outer frame, guide grooves are arranged on two sides of the outer frame, first connecting rods are slidably connected into the guide grooves, and a wall pushing plate is slidably connected into the outer frame. By the adoption of the structure, the corner grooves are formed in the inner corners of the outer frame, the rubber strips and the rubber plates are arranged in the corner grooves, and the curtain wall body makes contact with the rubber strips and the rubber plates, so that the curtain wall body can be stably placed in the outer frame and is not prone to sliding, and meanwhile the wall abutting plate is driven by the moving mechanism to press the curtain wall body; the position of the curtain wall body is reinforced, the curtain wall body is prevented from falling off from the outer frame, the structure cannot shield too many curtain wall bodies, and therefore the curtain wall body can be detached from the outer frame to be replaced under the condition that the attractiveness of the curtain wall body is not affected, and the problem that the cost is high when an electric control mode is adopted is solved.

The present invention relates to a double-helix low-resistance high-efficiency heat transfer arc extinguishing device, comprising an upper electrode, a lower electrode and an arc extinguishing chamber, wherein one end of the upper electrode forms an upper electrode contact, and the other side is fixedly connected to the upper part of the insulator string ball head, and one end of the lower electrode forms a lower electrode contact, and the other side is fixedly connected to the connection between the conductor of the ultra-high voltage transmission line and the insulator string; the arc extinguishing chamber comprises an arc extinguishing chamber body made of epoxy resin, two spiral arc extinguishing channels are arranged in the arc extinguishing chamber body, and the two ends of the two spiral arc extinguishing channels have a common starting point and a convergence point, the upper electrode contact is fixedly located at the starting point of the two spiral arc extinguishing channels, and the convergence point of the two spiral arc extinguishing channels is fixedly provided with a graphite arc-starting electrode ball, and the graphite arc-starting electrode ball is partially exposed to the arc extinguishing chamber body; the distance between the upper electrode contact and the lower electrode contact is 80-90% of the height of the insulator string. The present invention can reduce operation and maintenance costs and greatly accelerate the extinguishing of the latent power arc after lightning impulse flashover.

The invention belongs to the technical field of geothermal well construction, and particularly relates to double-sleeve equipment for geothermal well single-well closed circulation heat removal. The limiting centralizing frame and the coaxial centralizing frame can fix the position of the inner heat preservation casing pipe relative to the outer casing pipe, and the concentricity of the double casing pipes is guaranteed. Due to the design of the multifunctional float shoe, double operations of cement well cementation and circulating working medium circulation can be achieved, and the well completion process of a traditional geothermal well is simplified. The inner casing and the outer casing can be assembled on the ground and descend into a well at the same time, one-time casing descending operation is reduced, the construction efficiency is improved, the construction cost is reduced, and the labor intensity of constructors is reduced. Based on the design, one-time casing running operation of the medium-deep geothermal well can be achieved, the problems of concentricity of the inner casing and the outer casing, floating and sinking of the inner heat preservation casing due to density and the like can be effectively solved, the construction efficiency is remarkably improved, the construction strength is reduced, the construction period is shortened, and the well completion efficiency is improved.

The present invention provides a recyclable prefabricated pile structure and its production method and construction method, including a concrete pile body, an anchoring workpiece and a non-bonding portion; the concrete pile body includes an anchoring plate, main bars and spiral stirrups; the anchoring plate is at least arranged at one end of the concrete pile body, the main bars are arranged in the non-bonding portion, the spiral stirrups are wound along the outside of the non-bonding portion to form a steel cage, the anchoring workpiece is installed on the anchoring plate, and the lower end of the anchoring workpiece is connected to one end of the main bars. The present invention constructs the prefabricated pile to a designated position, disassembles the anchoring workpiece on the anchoring plate, and takes out the main bars for recycling. The present invention can reduce the project cost and has the advantages of high bearing capacity and convenient production and construction.

The utility model relates to the technical field of building protection, and discloses a building wall protection structure which comprises a plurality of protection plates, the protection plates are vertically arranged on the ground side by side in a spliced mode, supporting rods are fixedly arranged on the back faces of the protection plates, the supporting rods are arranged in an inclined mode at an angle, and the supporting rods are arranged on the back faces of the protection plates. A mounting plate is fixedly arranged at the lower end of the supporting rod, and mounting bolts connected with the ground are arranged on the two sides of the mounting plate. According to the utility model, a wall surface non-contact type protection structure is adopted, better protection is carried out under the condition that the wall surface is not damaged, the construction strength is smaller, and the practicability is higher.

The utility model relates to a bearing device and a production equipment system. The bearing device comprises at least one bearing unit, and the bearing unit comprises a bottom plate which is constructed to bear and position the production equipment and is installed on a target base; the supporting assembly is constructed to be detachably connected with the bottom plate; and the top frame is connected with the side, away from the bottom plate, of the supporting assembly in the first direction, a cavity is defined by the supporting assembly, the bottom plate and the top frame, and the production equipment can be located in the cavity. According to the bearing device, the construction strength of the production equipment in the using process can be reduced, and the delivery efficiency of the production equipment is improved.

The invention belongs to the technical field of transformer moving devices, and particularly relates to a dry-type transformer moving device. According to the technical scheme, the dry-type transformer moving device comprises a carrier loader used for supporting the dry-type transformer and a fixed push-pull frame used for clamping the dry-type transformer, the carrier loader is connected with an overturning locking mechanism used for clamping a lower iron core clamping piece of the dry-type transformer, and lifting universal wheels are installed at the bottom of the carrier loader. The invention provides a dry-type transformer moving device.

The present invention discloses an ecological protection device for slopes of high-fill and deep-excavation substation engineering, comprising a positioning frame and a protective mesh panel group, wherein the protective mesh panel group comprises a protective mesh panel monomer, the positioning frame comprises a transverse positioning rod, the protective mesh panel monomer is inserted into the positioning rod, the left and right adjacent protective mesh panel monomers are snap-connected, and the upper and lower adjacent protective mesh panel monomers are abutted against each other. Through this simple installation, a large piece of protective mesh panel group can be assembled into shape, which greatly reduces the difficulty of construction and saves construction time. In addition, the protective mesh panel monomer is small in size, light in structure, and easy to transport.

The utility model relates to a support buttress forming die which comprises two shells which are buckled oppositely, each shell is of a U-shaped structure, and joints of the shells are connected through spring buckles. Baffle plates are welded at the right-angle positions of the shell and are used for removing the corners of the buttress to prevent collision; the spring buckle adopts a spring duckbilled buckle; backing plates are symmetrically fixed on the two sides of the shell seam respectively, and the backing plates are flush with the shell seam; an angle of 45 degrees is formed between the separation blade and the right-angle position of the A limiting sleeve is fixedly mounted on one side of a seam where the two shells are buckled, a limiting insertion rod is fixedly mounted on the other side of the seam, and when the device is buckled, the limiting insertion rod is inserted into the limiting sleeve; and the limiting sleeve does not exceed a seam where the two shells are buckled. The device is simple in structure, low in manufacturing cost, easy to operate during use, capable of being used for construction of independent buttresses and wall buttresses, high in applicability, capable of reducing construction strength and improving construction efficiency, capable of being turned over and worthy of being popularized in the industry.

The present invention discloses a roadbed reinforcement structure with a rainwater collection function, which relates to the technical field of roadbed reinforcement, including a road paved on a foundation, wherein the road includes a road surface and a slope, and is characterized in that it also includes a first reinforcement module arranged at equal intervals along the length direction of the road and a second reinforcement module arranged between adjacent first reinforcement modules; the first reinforcement module includes a reinforcement rib that runs through the road transversely and a reinforcement seat installed at both ends of the reinforcement rib; the reinforcement seat includes a contact surface that fits the surface of the slope and a support surface that fits the surface of the foundation, and a first T-shaped passage is opened on the contact surface along the slope inclination direction. The present invention pulls two reinforcement seats at both ends of the reinforcement rib to ensure that they will not move after being stressed, and the contact surface of the reinforcement seat resists the soil at the slope to prevent the soil from moving outward, thereby improving the road's compressive strength.

The utility model discloses a plasterboard suspended ceiling anti-crack compensation device which comprises a plasterboard suspended ceiling board and a frame, an anti-crack compensation assembly is installed on the frame, the anti-crack compensation assembly comprises a compensation board and a compensation groove, a connecting assembly is installed on the frame, the connecting assembly comprises an insertion groove and an insertion block, and the insertion block is connected with the insertion groove. The anti-crack compensation device comprises a frame, the top of the frame is provided with a clamping assembly, the clamping assembly comprises an arc plate and a clamping hook, the arc plate is provided with a fixing assembly, and the fixing assembly comprises a connecting plate and a protruding block. When the gypsum ceiling plates are subjected to thermal expansion and cold contraction and stress of a building or a hoisting mechanism, the rubber pads can be compressed to get close to each other or the arc plates can be lengthened to get away from each other, the gypsum ceiling plates are prevented from being damaged due to extrusion or pulling of the stress, the use safety of the gypsum ceiling plates is guaranteed, and the anti-crack compensation device is suitable for anti-crack compensation of gypsum board ceilings.

The utility model relates to a subway station electromechanical device mounting device relates to the field of subway station electromechanical device installation, has solved the traditional power control cabinet installation mode usually relies on field welding, bolt fixation and artificial adjustment positioning, equipment installation, pipeline layout and the fixation of light -duty equipment (camera, broadcast) need to be completed step by step, each link lacks the cooperation, leads to long construction period, and the pipeline support needs to be newly set up after the positioning of subway station electromechanical device, and repeated adjustment causes resource waste, and the specification of subway station electromechanical device is various, and the size of existing fixed support is single, cannot be flexibly adjusted. Technical features include two pairs of L-shaped base, the mobile assembly of installing in four pairs L-shaped base lower surface, the fixed assembly of installing in four pairs L-shaped base lower surface. Realize mobile positioning, fixed, do not need to rely on manual handling, reduce construction intensity, relatively simple structure, convenient to use.

The application provides a precision refrigeration unit integrating cold water and air conditioning for a magnetic resonance device, which comprises an indoor unit and an outdoor unit connected with the indoor unit, the indoor unit comprises a refrigeration system, a cold water system, an air conditioning system and an electric control system, and the outdoor unit comprises a condensation system, wherein the refrigeration system is connected with the condensation system, the cold water system and the air conditioning system respectively, the refrigeration system and the condensation system provide refrigerant for evaporators in the cold water system and the air conditioning system, and the refrigerant after heat exchange in the cold water system and the air conditioning system is recovered to the condensation system through the refrigeration system, the cold water system provides cold water for heat generating components of the magnetic resonance device, the air conditioning system provides temperature and humidity within a preset range for a scanning room and a device room of the magnetic resonance device, and the electric control system is electrically connected with the refrigeration system, the condensation system, the cold water system and the air conditioning system respectively. The application is beneficial to solving the problems of high cost, large occupied area, high construction difficulty and low reliability of the prior art.

A modular component combined actinidia arguta cultivating and planting shed frame belongs to the field of actinidia arguta planting facilities and comprises a cultivating and planting frame and metal shed lines, the cultivating and planting frame further comprises connecting caps, supporting seats, supporting rods and shed frame rods, the lower portions of the connecting caps are connected with the supporting rods, and the upper ends of the connecting caps are connected with the shed frame rods. The supporting rods are provided with spiral conical rods in a matched mode and connected with the supporting bases, the cultivation and planting frames keep the shed frame rods parallel to one another, the shed frame rods are sequentially arranged and fixedly arranged on the ground, the shed frame rods are combined to form a shed line supporting face, the metal shed lines are perpendicular to the shed frame rods and transversely distributed and laid on the shed line supporting face at intervals, and partition baffle rings are further installed on the shed frame rods. According to the cultivation and planting shed frame, the cultivation and planting frames are utilized to form a standardized design structure, the cultivation and planting shed frame has the advantages of being simple in construction process, low in construction cost, good in structural frame firmness, high in stability and the like, and the management efficiency can be improved, the production cost can be reduced, and the ecological environment can be maintained in the application process.

The utility model discloses a steel-concrete combined simply supported beam bridge deck continuous structure which comprises a bridge deck continuous cast-in-place telescopic section and two bridge deck continuous cast-in-place fixed sections which are arranged between a first steel main beam and a second steel main beam, and the bridge deck continuous cast-in-place telescopic section is arranged between the two bridge deck continuous cast-in-place fixed sections. The thickness of the side, close to the bridge deck continuous cast-in-place telescopic section, of the bridge deck continuous cast-in-place fixed section is larger than that of the other side, and the thickness of the bridge deck continuous cast-in-place telescopic section is larger than that of the side, away from the bridge deck continuous cast-in-place telescopic section, of the bridge deck continuous cast-in-place fixed section. A fixing plate is placed at the position, at the joint of the first steel main beam and the second steel main beam, of the bridge deck continuous cast-in-place telescopic section, a base plate is arranged below the fixing plate, and steel bar frames are arranged in the bridge deck continuous cast-in-place telescopic section and the bridge deck continuous cast-in-place fixing section. Compared with the prior art, the connecting structure is simple in structure, clear in stress, very convenient and fast to mount and dismount, and capable of well adapting to deformation between the steel girders.

The overhead self-supporting portable optical cable comprises a cable core, a reinforcing piece and an outer sheath, the reinforcing piece comprises an FRP rod and three delta-shaped reinforcing belts, the FRP rod is arranged outside the cable core, the three delta-shaped reinforcing belts form a triangular structure and wrap the FRP rod, and the outer sheath wraps the delta-shaped reinforcing belts. According to the invention, the FRP rods play a role in assisting in tensile strength and filling the cable core structure, the triangular glass fiber reinforcing tape is used as a main tensile element to support the optical cable structure and play a moisture-proof role, and the design of the triangular reinforcer and the triangular structure can reduce the use amount of the glass fiber tape, reduce the weight of the optical cable, and reduce the cost of the optical cable. The triangular structure can realize a stable optical cable structure with least tensile elements.

The invention discloses an expressway guardrail plate rapid replacement device and a using method, and relates to the field of guardrail plate replacement. The expressway guardrail plate rapid replacement device comprises a vehicle body, and a hoisting assembly is installed on the vehicle body; a clamping mechanism is rotatably connected to the bottom of the lifting frame and comprises a clamping plate seat, a first clamping plate and a second clamping plate, control cavities are formed in the inner sides of the first clamping plate and the second clamping plate, fixing mechanisms are arranged on the inner sides of the control cavities, and each fixing mechanism comprises a limiting plate, a first spring and a push block; a storage box is arranged at the end of the movable arm, a movable plate is slidably connected to the inner side of the storage box, suction cup mechanisms distributed in an array mode are arranged on the movable plate, a storage frame is arranged on the outer side of the second clamping plate, and a supporting mechanism is arranged on the inner side of the storage frame. According to the rapid replacement device for the highway guardrail plates and the using method, the multiple guardrail plates can be hoisted in groups and are sequentially installed along a construction route, and the replacement efficiency of the guardrail plates is effectively improved.

The utility model relates to a low-power-consumption intelligent integrated fault isolation device, which comprises a deep fusion solid-sealed polar pole circuit breaker body and a low-power-consumption intelligent FTU, the deep fusion solid-sealed polar pole circuit breaker body comprises a mechanism box and a deep fusion solid-sealed polar pole, and the deep fusion solid-sealed polar pole is internally provided with a high-voltage capacitance energy taking device, a current sensor and a voltage sensor; the low-power-consumption intelligent FTU comprises a low-power-consumption microprocessor, a power supply module, an analog-to-digital conversion circuit, a voltage and current acquisition circuit, an isolation circuit, a drive circuit, a line loss module circuit and a GPRS module circuit. The device is small in size, light in weight, low in power consumption and capable of timely and accurately isolating power distribution network line faults, avoiding large-range power failure and reducing economic losses, and the power taking device is integrally designed.

The utility model discloses a cantilever cast-in-place beam hanging basket reaction frame device which comprises a rhombic main truss arranged at the top of a cantilever structure and a reaction frame which is fixed to the end wall of the cantilever structure and is of a right triangle structure, the end of the rhombic main truss is connected with a connecting arm which is vertically arranged downwards, and the connecting arm is horizontally connected with a front cross beam. Back pressure joists are arranged between the bottom of the cantilever structure and the front cross beam in the transverse direction at equal intervals, and hydraulic jacks are arranged between the back pressure joists and the reaction frame. The effects of improving the cost, the accuracy and the efficiency of the compression resistance detection of the bracket are achieved.

The invention relates to the technical field of drilling machine equipment, in particular to drilling-machine-free small-size bidirectional power drilling equipment which comprises a drilling bit, a drilling bit connector is fixedly connected to the top of the drilling bit, and a pressure-transmitting torsion-isolating sealing outer bearing is fixedly connected to the top of the drilling bit connector. The top of the drilling bit connector is fixedly connected with a drilling motor rotor, one side of the drilling motor rotor is fixedly connected with a drilling motor stator, the top of the drilling motor stator is fixedly connected with a pressure-transmitting torsion-isolating sealing inner bearing, and the top of the drilling motor stator is in threaded connection with a pressurizing connector. The small-size two-way power drilling equipment without the drilling machine is small in size, high in flexibility, energy-saving and environment-friendly, efficient, rapid and continuous coring drilling is achieved, the releasing mechanism can achieve self-releasing, drilling information real-time transmission and construction strength reduction, the releasing drill bit and the drilling drill bit rotate in different directions to offset part of torque, the internal stress of the system is reduced, and the drilling efficiency is improved. And the service life of each element is prolonged.

The utility model discloses an upright post assembling structure applied to a photovoltaic shed, which comprises an upright post component and a connecting component, the upright post component is connected with a foundation structure through an embedded screw, the connecting component comprises a plurality of fasteners, and the upright post component is connected with the embedded screw through the fasteners so as to realize non-welding type assembling. According to the utility model, non-welding type assembly is realized by connecting the upright post component and the pre-embedded screw rod through the fastener, the traditional welding process is replaced, the potential quality hazards such as weld pores and cracks caused by severe field welding operation environment and technical level difference of welders are eliminated, and the structural strength of the connecting part is stable and reliable. A standardized fastener connection mode is adopted, a common constructor can quickly complete the installation operation without professional welding equipment and certified welders, the site construction intensity and construction difficulty are greatly reduced, the installation efficiency is improved, and when the height or angle needs to be adjusted, the fastener is convenient to assemble and disassemble.

The application discloses a node combined beam assembling method, optimizes the port form of the node combined beam, and changes the upper flange plate of the port to be short, the lower flange plate to be long and the middle web plate to be vertical and in the middle of the node combined beam in the deck piece land prefabrication stage. The upper flange plate of the port to be installed is short, the lower flange plate is long and the middle web plate is long, and the whole is in the form of an inverted "convex character" port. In the deck piece land prefabrication stage, the upper flange plate of the port is changed to be long, the lower flange plate is changed to be short and the middle web plate is changed to be vertical and in the middle. When the node combined beam to be installed is hoisted in the air, the original horizontal hoisting insertion hole mode is optimized to be a vertical hoisting seat bottom type, and then the splicing joint assembling and welding work is completed. The application is convenient for on-site command hoisting and positioning, reduces construction strength, improves hoisting efficiency and improves construction precision.

The application discloses a construction method of a road and bridge safety guardrail, and comprises the following steps: (a) marking a construction area; (b) installing a first cross beam between two stand columns to obtain a stand column combination; (c) installing a buffer cylinder between two stand column combinations; (d) butting a second cross beam with a connecting seat, and then installing the connecting seat on the first cross beam; (e) butting the second cross beam with two adjacent connecting seats; (f) fixing the stand column in place; (g) installing on the second cross beam; (h) locking a first anti-glare plate; and (i) installing a limiting rod between two adjacent anti-glare plates. The application has the advantages of simple construction, small quantity of bolts, low operation difficulty, low labor intensity, high construction efficiency, step-by-step order, guaranteed assembly quality of the guardrail, reliable and effective light blocking wall formed by the anti-glare plates, difficult penetration of light of an opposite vehicle, good light blocking effect, and solved problem of opposite vehicle light glare.

The invention belongs to the technical field of bridge expansion joints, and relates to an anti-fatigue bridge expansion joint device, a main body structure comprises two rows of embedded steel bars arranged in an expansion joint mounting groove, F-shaped steel arranged between the embedded steel bars, a rubber strip connected with the F-shaped steel and a bending bolt connected with the F-shaped steel, and UHPC doped with PE fibers is poured in the mounting groove. Compared with common concrete, the strength, the crack resistance and the durability are greatly improved; pE fibers are adopted to replace traditional steel fibers in UHPC, corrosion of chloride ions in seawater and air is avoided, and the composite material is more suitable for the coastal complex service environment; the bending bolts are made of Q690 high-strength steel, compared with ordinary steel, the descending speed of steel-concrete interface shear stiffness can be reduced, the fatigue life can be prolonged, zero welding can be achieved, the anchoring performance between the bridge expansion joint device and anchoring concrete can be improved, meanwhile, shear force and drawing force brought by vehicle loads can be borne, and the service life of the bridge expansion joint device is prolonged. And a supporting effect on the bridge expansion joint device is also achieved.

This utility model relates to the field of building decoration and discloses a universal corner mesh, including two plastic strips. A U-shaped strip is fixedly connected to one side of each plastic strip. Galvanized wire mesh is fixedly connected to both sides of the two plastic strips. The outer side of the galvanized wire mesh has mesh holes, and the inner side has designed holes. There are two types of designed holes, with different structures but identical other structures. The two types of galvanized wire mesh include Type 1, where the designed holes are small round holes, and Type 2, where the designed holes are large round holes and oval holes. In this utility model, the adjustable U-shaped rubber strips adapt to different wall corners, and the two types of galvanized wire mesh meet diverse decorative needs, improving construction efficiency. Simultaneously, the low-carbon steel galvanized wire mesh and polyethylene strips are hot-melt connected via a U-shaped cavity, providing rust resistance, aging resistance, and a strong, lightweight overall design.

The application provides a large-diameter steel pipe column top-down method verticality control device and a use method. The device comprises a connecting ring seat arranged on the ground and located outside the pile hole, and an operation seat arranged on the connecting ring seat and used for connecting with the upper end of the steel pipe column and leveling the upper end of the steel pipe column. The verticality of the lower end of the steel pipe column does not need to be adjusted manually, the construction efficiency is greatly improved, the construction intensity of the construction personnel is greatly reduced, the economy is improved, the construction period can be ensured, the safety hidden danger is reduced, the stability is improved, the verticality of the steel pipe column is not easily interfered with when the device is recovered after the verticality of the steel pipe column is adjusted, the verticality of the steel pipe column is not easily reduced, the device is not easily caused to fall, the verticality of the steel pipe column can be quickly adjusted, and the verticality precision is improved.