CN109502455B

CN109502455B - Lifting equipment for installation of steel structure elevator derrick

Info

Publication number: CN109502455B
Application number: CN201811306169.4A
Authority: CN
Inventors: 孟向辉
Original assignee: Zhengzhou Hongzhan Intelligent Technology Co ltd
Current assignee: Henan Huabo Green Building Technology Co.,Ltd.
Priority date: 2018-11-05
Filing date: 2018-11-05
Publication date: 2020-12-29
Anticipated expiration: 2038-11-05
Also published as: CN109502455A

Abstract

The invention discloses lifting equipment for installing a steel structure elevator derrick, which comprises a body, wherein the body comprises an elevator derrick, a supporting platform is arranged at the bottom surface of the inner side of the elevator derrick, a hydraulic lifting column is arranged at the position of the top surface of the supporting platform, a lifting platform is arranged at the position between the top surfaces of the hydraulic lifting columns, and a vertical telescopic arm is arranged at the middle position of the top surface of the lifting platform; realize the holistic stability of platform, it is safer at the in-process of operation, vertical flexible arm and lift platform pass through the rotating circular disk and connect, can 360 degrees rotations, be equipped with fixing bolt restriction disc rotation on the rotating circular disk, whole equipment uses lifting device after two platforms are connected with main steelframe and are accomplished, every layer of construction is accomplished by below platform jacking top platform, it is fixed that the below platform is pulled up after the top platform is fixed, the circulation rises, descend the rationality, the structure of this device is comparatively simple, the cost is comparatively low, and is suitable for being generalized to use.

Description

Lifting equipment for installation of steel structure elevator derrick

Technical Field

The invention relates to a lifting device for mounting a steel structure elevator derrick.

Background

With the rise of steel structure forms, the elevator derrick adopts more and more steel frames, the construction speed is high, labor and time are saved, the elevator building and addition services are increased, but unnecessary cost and labor are increased under the condition that a crane is used or cannot be used due to the limitation of fields and other factors, and the elevator derrick structure aim to solve the problem.

Steel structures, while having numerous advantages, also have some disadvantages. For example, steel structure corrosion causes hundreds of millions of tons of steel waste and huge economic losses each year. According to statistics, the economic loss caused by steel corrosion in China accounts for about 2-4% of the total value of national production every year. In addition, researches show that the strength of the steel is in inverse proportion to the temperature, the temperature of the steel is sharply reduced under the condition that the temperature is 540 ℃, the mechanical property is greatly reduced, and the temperature is called as critical temperature; when a fire breaks out, the temperature can reach 1000 ℃, which is far higher than the critical temperature of the steel structure, so that the strength of the steel structure is obviously reduced; if the used steel is not treated, the steel structure is easily softened and collapsed and the steel is easily scrapped when a fire disaster happens, so that the hidden danger is caused to the safety of people, and the resource waste and the environmental damage are also caused. Therefore, to overcome the shortcomings of the steel structure in practical application in the construction field, the steel structure needs to be protected from fire and corrosion.

According to research, under the condition of no protection by any measures, the fire resistance time of a steel structure is about 15 minutes, and the fire resistance time of the steel structure reaches more than 60 minutes according to the national standard fire resistance requirement of the steel structure, so the steel structure needs to be protected. At present, the fire-proof measures of steel structures are roughly divided into the following measures: concrete is wrapped, fire-proof plate is wrapped, and fire is prevented by coating. Among the measures, the first measure is that concrete must be poured on the surface of the steel structure, although the concrete has good fireproof effect, the construction period is long, the cost is high, and the concrete is generally not suitable for large-scale steel structure buildings; the second measure is to coat the fireproof plate on the surface of the steel structure and use adhesive for bonding, the weight of the steel structure is increased, and the adhesive reduces the bonding strength along with the influence of time and environment, so that the problems of collapse of the steel structure, falling of the fireproof plate and the like are easily caused; two kinds of measures before the contrast, the measure of coating fire retardant coating is adopted for the scheme of steel construction fire prevention usually, because its construction is simple, does not receive the external shape influence of steel construction to the coating is frivolous, does not only influence the outward appearance of steel construction building, can play fabulous decorative effect moreover, and the coating appears damaging at the coating on steel construction building surface, only need coat once again in the place that damages, so the measure of coating fire retardant coating is the best method of solving steel construction fire prevention.

Disclosure of Invention

The invention aims to solve the technical problem of providing lifting equipment for mounting a steel structure elevator derrick.

The invention is realized by the following technical scheme:

the utility model provides a jacking equipment of steel construction elevator derrick installation usefulness, includes the body, the body includes the elevator derrick, the inboard bottom surface position department of elevator derrick is provided with supporting platform, the position department of supporting platform top surface is provided with hydraulic lifting column, position department between the hydraulic lifting column top surface is provided with lift platform, the intermediate position department of lift platform top surface is provided with vertical flexible arm.

Preferably, the vertical telescopic arm is connected with a transverse telescopic arm, and a rotary fixed gear is connected between the transverse telescopic arm and the vertical telescopic arm.

Preferably, a rotating disc is arranged at the position of the top surface of the lifting platform, the vertical telescopic arm is fixed on the rotating disc, and a fixing bolt is arranged at the position between the rotating disc and the lifting platform.

Preferably, the hydraulic lifting column can be extended and retracted towards two sides.

Preferably, telescopic round steel columns are arranged at the front side and the rear side of the lifting platform, and jacks matched with the telescopic round steel columns are arranged at the surface of the elevator derrick.

Preferably, the telescopic round steel column is of a solid structure.

Further, coating an anti-corrosion fireproof primer on the surface of the elevator derrick.

Further, the preparation method of the anti-corrosion fireproof primer comprises the following steps:

s1, adding water and a dispersing agent into a high-speed ball milling dispersing machine, and grinding for 50-60 minutes; then sequentially adding the filler, titanium dioxide, iron oxide red, hydroxyethyl cellulose ether, zinc phosphate, butyl acetate and sodium nitrite into a high-speed dispersion machine, adjusting the high-speed state, and stirring the mixture uniformly to obtain anticorrosive slurry; then adding the styrene-acrylic emulsion and the chlorometaemulsion under the low-speed stirring state, and stirring and dispersing uniformly to obtain a component A;

s2, sequentially adding water, hydroxyethyl cellulose ether, a defoaming agent, titanium dioxide, a filler, a fireproof additive, ammonium polyphosphate, melamine, pentaerythritol and a starch modifier into a high-speed dispersion machine, adjusting to a high-speed state, and stirring uniformly to obtain fireproof slurry; then adding the chlorine partial emulsion under the low-speed stirring state, and stirring and dispersing uniformly to obtain a component B;

s3, adding the prepared component A, the prepared component B and the prepared functional fibers into a high-speed ball milling dispersion machine according to a certain proportion, and grinding for 10-20 minutes; and then stirring at a low speed until no particle feeling exists, thus obtaining the water-based anticorrosive fireproof primer.

Further, the component A comprises the following components in percentage by weight: 10-20% of styrene-acrylic emulsion, 10-20% of chlorine partial emulsion, 2-5% of filler, 3-7% of titanium dioxide, 2-8% of iron oxide red, 10-20% of hydroxyethyl cellulose ether, 1-3% of zinc phosphate, 2-5% of butyl acetate, 0.5-1% of sodium nitrite, 0.5-2% of dispersant and the balance of water;

the component B comprises the following components in percentage by weight: 10-20% of hydroxyethyl cellulose ether, 0.2-0.4% of defoaming agent, 3-7% of titanium dioxide, 2-5% of filler, 2-4% of fireproof additive, 3-10% of ammonium polyphosphate, 2-4% of melamine, 0.6-2% of pentaerythritol, 10-15% of starch modifier, 10-20% of chlorine partial emulsion and the balance of water.

Further, the mass ratio of the component A to the component B to the functional fiber is 20: (1-5).

Further, the filler is one or a mixture of more of talcum powder, heavy calcium powder, kaolin and precipitated barium sulfate.

Further, the sum of the content of the starch modifier and the content of the partial chlorine emulsion is 30 percent.

Further, the functional fiber is aluminum silicate fiber and/or porous carbon fiber. Preferably, the functional fibers are formed by uniformly mixing aluminum silicate fibers and porous carbon fibers in a mass ratio of 1: 1.

As one of the preferable technical proposal of the invention, the fireproof additive is obtained by the following steps: pouring 0.1-0.3 mol of cyanuric chloride and 150-250 mL of acetonitrile into a reaction device under stirring for dissolving; then, adding a mixed solution of 0.1-0.3 mol of 1-oxyphosphide-4-hydroxymethyl-2, 6, 7-trioxabicyclo [2.2.2] octane and 0.1-0.3 mol of triethylamine dissolved in 150-250 mL of acetonitrile into the system, and reacting for 2-4 hours at the temperature of 10-15 ℃ in a nitrogen atmosphere; then adding a mixed solution of 0.1-0.3 mol of piperazine and 0.1-0.3 mol of triethylamine dissolved in 40-60 mL of acetonitrile into the reaction system, and reacting for 2-4 hours while stirring at the temperature of 40-50 ℃; then adding a mixed solution of 0.1-0.3 mol of piperazine and 0.1-0.3 mol of triethylamine dissolved in 40-60 mL of acetonitrile into the system, and reacting the whole mixed system for 5-10 hours at a reflux temperature after the addition is finished; finally, cooling the reactant to 20-30 ℃, filtering, and collecting a filter cake; and washing the filter cake with water and absolute ethyl alcohol in sequence, and then drying in vacuum to obtain the fireproof additive.

As one of the preferable technical proposal of the invention, the fireproof additive is obtained by the following steps: pouring 0.1-0.3 mol of cyanuric chloride and 100-200 mL of acetonitrile into a reaction device under stirring for dissolving; then, adding a mixed solution of 0.1-0.3 mol of 1-oxyphosphide-4-hydroxymethyl-2, 6, 7-trioxabicyclo [2.2.2] octane and 0.1-0.3 mol of triethylamine dissolved in 150-250 mL of acetonitrile into the system, and reacting for 2-4 hours at the temperature of 10-15 ℃ in a nitrogen atmosphere; ultrasonically dispersing 2-3 g of sodium bentonite for 1-2 hours by using 50-150 mL of acetonitrile, then pouring 0.1-0.3 mol of piperazine dissolved in 50-150 mL of acetonitrile into the sodium bentonite, and continuously ultrasonically dispersing for 20-30 minutes to obtain an ultrasonic dispersion liquid; adding the ultrasonic dispersion liquid into the system, adding 0.3-0.6 mol of triethylamine, and reacting for 2-4 hours while stirring at the temperature of 40-50 ℃; finally, raising the temperature of the whole mixed system to the reflux temperature, and reacting for 5-10 hours; after the reaction is completed, cooling the reactant to 20-30 ℃, filtering, and collecting a filter cake; and washing the filter cake with water and absolute ethyl alcohol in sequence, and then drying in vacuum to obtain the fireproof additive.

In the existing flame-retardant expansion system, three substances, namely ammonium polyphosphate, melamine and pentaerythritol, are usually adopted to be matched to obtain an environment-friendly flame retardant, but the three substances all belong to water-soluble micromolecules, so that the water resistance and the weather resistance of a steel structure are easily deteriorated. The inventor utilizes affinity substitution reaction between melamine, 1-oxyphosphia-4-hydroxymethyl-2, 6, 7-trioxabicyclo [2.2.2] octane and piperazine to obtain macromolecular flame retardant to replace micromolecular flame retardant, constructs an intumescent flame retardant system, enhances compatibility with a substrate, and endows a steel structure with outstanding flame retardant performance and water resistance. In the further technical scheme of the invention, layered clay bentonite is added in the preparation process of the fireproof additive, polymerization reaction is carried out between clay layers from small molecular monomers, the layers are propped open, the peeling of the larger degree is realized, the fireproof additive with good char forming capability and thermal stability is obtained by utilizing the physical isolation effect of the combustion process of the layered clay while introducing a structure containing tertiary nitrogen and a stable triazine ring structure into the structure of the fireproof additive, and a certain synergistic effect is realized on ammonium polyphosphate, melamine and pentaerythritol.

As a further improved technical scheme of the invention, the starch modifier comprises the following synthetic steps: adding 15-60 g of starch and 15-60 g of melamine into a reaction device, adding 50-200 mL of 1, 2-dichloroethane, heating to reflux temperature, and reacting for 4-10 hours; naturally cooling to 20-30 ℃, filtering, and collecting a filter cake; and washing the filter cake with dichloromethane, drying in vacuum to constant weight, crushing and sieving to obtain the starch modifier.

In the technical scheme, the starch is one or a mixture of more of pure starch, carboxyl starch and cross-linked starch. Preferably, the starch is a cross-linked starch.

Wherein the preparation process of the carboxyl starch comprises the following steps: uniformly mixing 100-200 g of pure starch and 400-800 mL of water, heating to 70-80 ℃, and stirring for 5-10 minutes under an ultrasonic condition; then naturally cooling to 20-30 ℃, adding 10-20 g of hydrogen peroxide and 0.1-0.5 g of copper sulfate, and stirring for reaction for 2-4 hours; centrifuging the reaction liquid for 20-30 minutes, and collecting bottom solids; and (3) washing the bottom solid with water, and drying in vacuum at 50-60 ℃ to obtain the carboxyl starch.

The preparation process of the cross-linked starch comprises the following steps: adding 20-40 g of pure starch and 1-3 g of sodium chloride into a reaction device, and then adding 30-60 mL of 10^-4Stirring 10-30 mol/L sodium hydroxide aqueous solutionThe starch paste is obtained after minutes; adding 2-4 mL of phosphorus oxychloride under the ice-water bath condition, heating to 40-50 ℃, and reacting for 3-4 hours; then naturally cooling to 20-30 ℃, filtering, and collecting a filter cake; washing the filter cake with dichloromethane, and then drying in vacuum at 50-60 ℃ to obtain the cross-linked starch.

In tests, the starch modifier formed by the cross-linked starch is found to be beneficial to improving the flame retardant property of the anticorrosion fireproof primer, and is also beneficial to improving the mechanical property and the anticorrosion property of the anticorrosion fireproof primer, which is possibly related to the cross-linked structure of the cross-linked starch.

The working principle of the invention is as follows:

when in connection, the supporting platform and the main steel frame are firstly connected and fixed, then the hydraulic lifting column is arranged on the supporting platform and is connected and fixed with the lifting platform, the lifting platform is connected with the main steel frame, the lifting equipment is arranged on the lifting platform in sequence, the connection between the lifting platform and the main steel frame is disconnected after the assembly is finished, the lifting platform is connected with the main steel frame after the hydraulic prop lifts the lifting platform to the next installation position, the connection between the supporting platform and the main steel frame is disconnected after the connection is finished, the hydraulic lifting column is upwards stretched in the opposite direction, the supporting platform is connected with the main steel frame after reaching the proper position, after the lifting equipment is finished, the lifting equipment starts to work, after the vertical telescopic arm reaches the proper height, the transverse telescopic arm is lifted to the proper angle and then extends to the proper position, after the adjustment is finished, the motor starts to work, and the whole equipment is connected with the main steel, the stress is born by the platform and the main steel frame, and the hydraulic lifting column is not stressed.

The invention has the beneficial effects that: lift platform is connected with main steelframe through flexible round steel post in floor height department respectively, realize the holistic stability of platform, it is safer at the in-process of operation, two flexible arms are connected fixedly through rotatory fixed gear, and can adjust the angle between two flexible arms, vertical flexible arm and lift platform pass through the rotating circular disk and connect, can 360 degrees rotations, be equipped with fixed bolt restriction disc rotation on the rotating circular disk, whole equipment uses lifting device after two platforms are connected with main steelframe and are accomplished, every layer of construction is accomplished by below platform jacking top platform, it is fixed to pull up the below platform after the top platform is fixed, the circulation rises, descend the same reason, the structure of this device is comparatively simple, the cost is comparatively low, and the device is suitable for being generalized to use.

In addition, kaolin, a fireproof additive, a starch modifier and other materials are introduced into the anticorrosive fireproof primer, wherein the kaolin has the superfine characteristic and can be effectively contacted and compounded with an organic material, the formation of an aluminum phosphate inorganic refractory substance is accelerated, and the stability of an organic carbonization layer is enhanced; the fireproof additive can be used for forming a composite fireproof layer of an organic carbon layer and an inorganic fireproof substance in cooperation with the liquid-phase mass transfer effect, so that a firm fireproof coating with excellent fireproof performance is obtained; the starch modifier has good bonding and carbonizing performances, can replace part of emulsion, reduces the cost, and improves the expansion thickness of a carbonized layer by being cooperated with the carbonization of the carbonizing agent, thereby obtaining the fireproof coating with excellent fire resistance and a high-thickness carbonized layer. In a word, the fireproof finishing coat with excellent fire resistance, namely the component B, the inorganic fibers such as the aluminum silicate fibers and the like, and the water-based steel structure anticorrosion primer, namely the component A, are prepared together to obtain the anticorrosion and fireproof primer with double functions, so that the problem of fireproof failure caused by the falling of a fireproof surface layer due to the fact that the anticorrosion primer is not fireproof and is easy to soften is solved, and the water-based steel structure anticorrosion and fireproof integrated coating with anticorrosion and fireproof functions is obtained.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a top view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a side sectional view of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The specific raw materials in the examples are as follows:

styrene-acrylic emulsion, prepared according to the first example of patent application No. 201610773314.4.

A polyvinylidene chloride emulsion was prepared according to the first example of patent application No. 201010178647.5.

Kaolin, produced by the Gangshou county Gangchang mineral processing factory, 1250 mesh.

Titanium dioxide, available from commercial materials of cornun titanium, rutile type, 325 mesh.

Iron oxide red, available from Shanghai Jiande chemical Co., Ltd., 200 mesh.

Hydroxyethyl cellulose ether, available from york, guangzhou, model QP4400H, CAS number: 9104-62-8.

Zinc phosphate, CAS number: 7779-90-0.

Butyl acetate, CAS No.: 123-86-4.

Sodium nitrite, CAS No.: 7632-00-0.

Dispersants were prepared according to the specific embodiment of patent application No. 201510773245.2.

An antifoaming agent, prepared as described in example four of patent application No. 201510383676.8.

Ammonium polyphosphate, CAS No.: 14728-39-3.

Melamine, CAS No.: 108-78-1.

Pentaerythritol, CAS number: 115-77-5.

Cyanuric chloride, CAS No.: 108-77-0.

1-oxyphospho-4-hydroxymethyl-2, 6, 7-trioxabicyclo [2.2.2] octane, referred to "synthesis of halogen-free flame retardant polymer with Longhe phosphate group" (university of science and technology in Huazhong, Mingjinyang Master thesis), the specific process conditions are as follows: the reaction time is 24 hours, the reaction temperature is 85 ℃, the molar ratio of the raw materials is 1:1, and the dosage of the catalyst is 6.2 percent, wherein the mass ratio of tetrabutylammonium bromide to potassium iodide is 5: 7.

Triethylamine, CAS number: 121-44-8.

Piperazine, CAS No.: 110-85-0.

Sodium bentonite, provided by gold mineral processing factories in Lingshou county, first grade, 400 mesh.

Pure starch, CAS No.: 9005-25-8, and pure potato starch from Haohe trade Co., Ltd, nan' an city, Fujian province.

Melamine, CAS number: 108-78-1.

The hydrogen peroxide is specifically hydrogen peroxide with the mass fraction of 30%.

Phosphorus oxychloride, CAS number: 10025-87-3.

Alumina silicate fiber, 800nm in diameter, available from Shandong Mingtao refractory fiber Co.

Porous carbon fibers, 800nm in diameter, were prepared according to example three of patent application No. 201711011538.2.

As shown in fig. 1,2 and 3, the lifting device for installing the steel structure elevator derrick comprises a body 1, wherein the body 1 comprises an elevator derrick 101, a supporting platform 102 is arranged at the bottom surface of the inner side of the elevator derrick 101, a hydraulic lifting column 103 is arranged at the top surface of the supporting platform 102, a lifting platform 104 is arranged at the position between the top surfaces of the hydraulic lifting column 103, and a vertical telescopic arm 2 is arranged at the middle position of the top surface of the lifting platform 104.

Example 1

The vertical telescopic arm 2 is connected with a transverse telescopic arm 201, and a rotary fixed gear 202 is connected between the transverse telescopic arm 201 and the vertical telescopic arm 2.

Example 2

A rotating disc 105 is arranged at the top surface of the lifting platform 104, the vertical telescopic arm 2 is fixed on the rotating disc 105, and a fixing bolt 106 is arranged between the rotating disc 105 and the lifting platform 104.

In a preferred embodiment of the present invention, the hydraulic lifting column 103 can be extended and retracted to both sides.

Example 3

Telescopic round steel columns 107 are arranged at the front side and the rear side of the lifting platform 104, and jacks 108 matched with the telescopic round steel columns 107 are arranged at the surface of the elevator derrick 101.

In a preferred embodiment of the present invention, the round telescopic steel column 107 is a solid structure.

Example 4

And the surface of the elevator derrick is coated with an anticorrosive fireproof primer.

The preparation method of the anticorrosive fireproof primer comprises the following steps:

s1, adding deionized water and a dispersing agent into a high-speed ball milling dispersing machine, and grinding for 50 minutes at 2000 revolutions per minute; then adding kaolin, titanium dioxide, iron oxide red, hydroxyethyl cellulose ether, zinc phosphate, butyl acetate and sodium nitrite into a high-speed dispersion machine in sequence, adjusting the high-speed state, and stirring the mixture uniformly at the speed of 800 revolutions per minute to obtain anticorrosive slurry; then adding the styrene-acrylic emulsion and the chlorine partial emulsion under the low-speed stirring state, and stirring and dispersing uniformly at 200 revolutions per minute to obtain a component A;

s2, sequentially adding deionized water, hydroxyethyl cellulose ether, a defoaming agent, titanium dioxide, kaolin, a fireproof additive, ammonium polyphosphate, melamine, pentaerythritol and a starch modifier into a high-speed dispersion machine, adjusting the high-speed dispersion machine to a high-speed state, and uniformly stirring at 800 revolutions per minute to obtain fireproof slurry; then adding the chlorine partial emulsion under the low-speed stirring state, and stirring and dispersing uniformly at 200 revolutions per minute to obtain a component B;

s3, adding the prepared component A, the prepared component B and aluminum silicate fibers into a high-speed ball-milling dispersing machine according to the mass ratio of 20:20:1, and grinding for 10 minutes at 2000 r/min; and then stirring at low speed and 200 revolutions per minute until no granular slurry is obtained, thus obtaining the water-based anticorrosive fireproof primer.

Wherein the component A comprises the following components in percentage by weight: 20% of styrene-acrylic emulsion, 20% of chlorine partial emulsion, 3% of kaolin, 3% of titanium dioxide, 5% of iron oxide red, 10% of hydroxyethyl cellulose ether, 3% of zinc phosphate, 5% of butyl acetate, 1% of sodium nitrite, 2% of dispersing agent and the balance of deionized water;

the component B comprises the following components in percentage by weight: 10% of hydroxyethyl cellulose ether, 0.4% of defoaming agent, 5% of titanium dioxide, 3% of kaolin, 3.5% of fire-retardant additive, 10% of ammonium polyphosphate, 4% of melamine, 2% of pentaerythritol, 10% of starch modifier, 20% of chlorine partial emulsion and the balance of deionized water.

The fire-retardant additive is polypentaerythritol phosphate, and the specific conditions refer to synthesis and characterization of flame retardant polypentaerythritol phosphate (fine chemical intermediate, 6.2006, volume 36, stage 3), and are as follows: the molar ratio of pentaerythritol to phosphorus oxychloride is 1:5, and the molar ratio of pentaerythritol diphosphate diphosphonidyl chloride to hydroquinone is 1: 1.

The starch modifier comprises the following synthetic steps: adding 30g of pure starch and 30g of melamine into a three-neck flask, adding 100mL of 1, 2-dichloroethane, and heating to reflux temperature for reacting for 8 hours; naturally cooling to 30 ℃, filtering by adopting 200-mesh filter cloth, and collecting a filter cake; washing the filter cake with dichloromethane 40 times of the weight of the filter cake, drying the filter cake at 60 ℃ in vacuum to constant weight, crushing the filter cake and sieving the filter cake with a 80-mesh sieve to obtain the starch modifier.

Example 5

The fire retardant additive is obtained by the following steps: pouring 0.2mol of cyanuric chloride and 200mL of acetonitrile into a three-neck flask for dissolution under the stirring of 100 r/min; then, a mixed solution of 0.2mol of 1-oxyphosphia-4-hydroxymethyl-2, 6, 7-trioxabicyclo [2.2.2] octane and 0.2mol of triethylamine dissolved in 200mL of acetonitrile is gradually dripped into the system at the speed of 3mL/min, and the temperature is kept at 10 ℃ under the nitrogen atmosphere for reaction for 3 hours; then, a mixed solution of 0.2mol of piperazine and 0.2mol of triethylamine dissolved in 50mL of acetonitrile is dripped into the reaction system at the speed of 3mL/min, and the temperature is maintained at 50 ℃ for reaction for 3 hours under the stirring of 100 r/min; then, dropwise adding a mixed solution of 0.1mol of piperazine and 0.2mol of triethylamine dissolved in 50mL of acetonitrile into the system at the speed of 3mL/min, and reacting the whole mixed system for 6 hours at the reflux temperature after the dropwise addition is finished; finally, cooling the reactant to 30 ℃, filtering by using 300-mesh filter cloth, and collecting a filter cake; and washing the filter cake with water 200 times the weight of the filter cake and absolute ethyl alcohol 100 times the weight of the filter cake in sequence, and performing vacuum drying at 80 ℃ for 24 hours to obtain the fireproof additive.

Example 6

The fire retardant additive is obtained by the following steps: pouring 0.2mol of cyanuric chloride and 150mL of acetonitrile into a three-neck flask for dissolution under the stirring of 100 r/min; then, a mixed solution of 0.2mol of 1-oxyphosphia-4-hydroxymethyl-2, 6, 7-trioxabicyclo [2.2.2] octane and 0.2mol of triethylamine dissolved in 200mL of acetonitrile is gradually dripped into the system at the speed of 3mL/min, and the temperature is kept at 10 ℃ under the nitrogen atmosphere for reaction for 3 hours; ultrasonically dispersing 2.8g of sodium bentonite with 100mL of acetonitrile at 300W of power for 1 hour, then pouring 0.2mol of piperazine dissolved in 150mL of acetonitrile into the sodium bentonite, and continuously ultrasonically dispersing for 30 minutes to obtain ultrasonic dispersion liquid; adding the ultrasonic dispersion liquid into the system, adding 0.4mol of triethylamine, and reacting for 3 hours at the temperature of 50 ℃ under the stirring of 100 revolutions per minute; finally, the temperature of the whole mixed system is raised to be below the reflux temperature, and the reaction is carried out for 6 hours; after the reaction is completed, cooling the reactant to 30 ℃, filtering by using 300-mesh filter cloth, and collecting a filter cake; and washing the filter cake with water 200 times the weight of the filter cake and absolute ethyl alcohol 100 times the weight of the filter cake in sequence, and performing vacuum drying at 80 ℃ for 24 hours to obtain the fireproof additive.

Example 7

The starch modifier comprises the following synthetic steps: adding 30g of carboxyl starch and 30g of melamine into a three-neck flask, adding 100mL of 1, 2-dichloroethane, heating to reflux temperature, and reacting for 8 hours; naturally cooling to 30 ℃, filtering by adopting 200-mesh filter cloth, and collecting a filter cake; washing the filter cake with dichloromethane 40 times of the weight of the filter cake, drying the filter cake at 60 ℃ in vacuum to constant weight, crushing the filter cake and sieving the filter cake with a 80-mesh sieve to obtain the starch modifier.

Wherein the preparation process of the carboxyl starch comprises the following steps: uniformly mixing 100g of pure starch and 400mL of deionized water, heating to 70 ℃ at 2 ℃, and stirring for 8 minutes at 100 revolutions per minute under the condition of ultrasonic power of 300W; then naturally cooling to 30 ℃, adding 10g of hydrogen peroxide and 0.1g of copper sulfate, and stirring at 100 revolutions per minute for reaction for 4 hours; centrifuging the reaction solution at 5000 rpm for 20 minutes, and collecting a bottom solid; and washing the bottom solid with deionized water with the weight of 100 times of that of the bottom solid, and performing vacuum drying at 60 ℃ for 24 hours to obtain the carboxyl starch.

Example 8

The starch modifier comprises the following synthetic steps: adding 30g of crosslinked starch and 30g of melamine into a three-neck flask, adding 100mL of 1, 2-dichloroethane, and heating to reflux temperature for reacting for 8 hours; naturally cooling to 30 ℃, filtering by adopting 200-mesh filter cloth, and collecting a filter cake; washing the filter cake with dichloromethane 40 times of the weight of the filter cake, drying the filter cake at 60 ℃ in vacuum to constant weight, crushing the filter cake and sieving the filter cake with a 80-mesh sieve to obtain the starch modifier.

The preparation process of the cross-linked starch comprises the following steps: 20g of pure starch and 1g of sodium chloride are added into a three-neck flask, and 30mL of 10 is added^-4Stirring with a sodium hydroxide aqueous solution of mol/L at 100 rpmObtaining starch paste after 30 minutes; dripping 2mL of phosphorus oxychloride at the speed of 0.1mL/min under the condition of ice-water bath, heating to 40 ℃ at the speed of 2 ℃/min, and reacting for 4 hours; naturally cooling to 30 ℃, filtering by using 300-mesh filter cloth, and collecting a filter cake; the filter cake was washed with 60 times its weight of methylene chloride and then vacuum-dried at 60 ℃ for 24 hours to obtain the crosslinked starch.

Example 9

s3, adding the prepared component A, the prepared component B and the porous carbon fibers into a high-speed ball-milling dispersion machine according to the mass ratio of 20:20:1, and grinding for 10 minutes at 2000 r/min; and then stirring at low speed and 200 revolutions per minute until no granular slurry is obtained, thus obtaining the water-based anticorrosive fireproof primer.

The preparation process of the cross-linked starch comprises the following steps: 20g of pure starch and 1g of sodium chloride are added into a three-neck flask, and 30mL of 10 is added^-4Stirring the mixture for 30 minutes at 100 revolutions per minute by using a mol/L sodium hydroxide aqueous solution to obtain starch paste; dripping 2mL of phosphorus oxychloride at the speed of 0.1mL/min under the condition of ice-water bath, heating to 40 ℃ at the speed of 2 ℃/min, and reacting for 4 hours; naturally cooling to 30 ℃, filtering by using 300-mesh filter cloth, and collecting a filter cake; the filter cake was washed with 60 times its weight of methylene chloride and then vacuum-dried at 60 ℃ for 24 hours to obtain the crosslinked starch.

Example 10

s3, adding the prepared component A, the component B and functional fibers into a high-speed ball milling dispersion machine according to the mass ratio of 20:20:1, wherein the functional fibers are formed by uniformly mixing aluminum silicate fibers and porous carbon fibers according to the mass ratio of 1:1, and grinding for 10 minutes at 2000 r/min; and then stirring at low speed and 200 revolutions per minute until no granular slurry is obtained, thus obtaining the water-based anticorrosive fireproof primer.

Test example 1

The surface drying time, the actual drying time and the water resistance of the anticorrosive fireproof primer of the embodiment 4-10 are tested.

Preparing an anticorrosive fireproof primer coating on the surface of the steel structure:

(1) preparation of steel plate samples: a plurality of pieces of steel with the size of 10mm x 6mm are cut out with Q235 steel and are regarded as the test piece substrate, carry out the mechanical method rust cleaning to steel sheet test piece bottom plate with the file earlier, and reuse abrasive paper is polished to the surfacing, reaches Ra2 level, then carries out the deoiling with acetone to the steel sheet and handles to improve the adhesive force of anticorrosive fire protection priming paint.

(2) Preparing an anticorrosive fireproof primer coating on the surface of the steel structure: and (3) uniformly coating the anticorrosive fireproof primer on the surface-treated steel plate, after the paint film is naturally dried and hardened, coating the anticorrosive fireproof primer again, and repeating for three times to ensure coating.

Surface dry time of the coating: according to GB/T1728-1979 determination method for drying time of paint film and putty film, a cotton ball is lightly placed on the surface of the coating, and the cotton ball is lightly blown by a nozzle, if the cotton ball can be blown away and no cotton silk is left on the surface of the coating, the surface is considered to be dry, the method is a cotton ball blowing method, and the time for surface drying is the surface drying time.

Solid drying time of the coating: according to GB/T1728-1979 determination of drying time of paint films and putty films, a piece of filter paper or cotton ball is placed on the surface of the coating, a drying tester (200g weight type) is further mounted, and the weight is removed after 30 s. Turning over the test board, wherein the filter paper (or cotton ball) can fall freely, and the fiber is not stuck on the coating film; if 1-2 fibers adhered but could be brushed off gently, the coating was considered to be dry and the time from paint brush to this time was taken as the dry time.

The water resistance test is carried out according to GB/T9755-2001 synthetic resin exterior wall paint. Firstly, melting paraffin and rosin (1:1) on a test plate, sealing the bottom, sealing the edge, and standing for 24 hours; the panels were then left to stand for a period of time in 2/3 height soak in distilled water. After the test plate is taken out, the test plate is washed clean by distilled water, water drops on the test plate are thrown off, the test plate is dried by filter paper, and whether the phenomena of color change, bubbling, powder falling and the like are obvious or not is immediately observed on the surface of the coating.

The specific tests are shown in table 1.

TABLE 1 TABLE of results of dry time, actual dry time and water resistance

	Technical index	Actual measurement result	Conclusion
				Open time (h)	≤4	0.5	Qualified
Actual drying time (h)	≤24	＜24	Qualified
				Water resistance	168h has no abnormal condition	168h, meets the requirement	Qualified

Test example 2

The fireproof performance of the anticorrosive fireproof primer of examples 4-10 was tested.

The fireproof performance of the anti-corrosion fireproof primer is tested by using a large plate combustion method device according to the requirements of the steel structure fireproof paint specified in GB1907-2002 Steel structure fireproof paint: the test sample plate is placed on an iron ring of an iron stand, the coating surface faces downwards, the vertical distance from a nozzle of an alcohol blast lamp to the coating surface of the test sample plate is 70mm, the back surface of the test sample plate is placed with a II-grade precision, a K-index thermocouple is arranged, the diameter of a copper sheet at one end of the thermocouple is 12mm, and the thickness of the copper sheet is 0.2 mm. And an asbestos heat insulation layer with the thickness of 5-8 cm is covered on the thermocouple. The fireproof performance of the fireproof coating prepared in each experiment is compared by measuring the temperature of the back surface of the steel plate reached by the test piece after the test piece meets fire for 30 min.

The test panels were prepared as in test example 1.

The specific test results are shown in table 2.

TABLE 2 fire performance results table

The invention utilizes the affinity substitution reaction between melamine, 1-oxyphosphia-4-hydroxymethyl-2, 6, 7-trioxabicyclo [2.2.2] octane and piperazine to obtain macromolecular flame retardant to replace micromolecular flame retardant, construct an intumescent flame retardant fireproof system, enhance the compatibility with a substrate and endow a steel structure with outstanding flame retardant performance and water resistance. In example 6, layered clay bentonite was added during the preparation of the fire retardant additive, and polymerization occurred between clay layers from small molecular monomers to open up the layers and achieve greater exfoliation, and the fire retardant additive having good char formation ability and thermal stability was obtained by introducing a structure containing tertiary nitrogen and a stable triazine ring structure into the fire retardant additive structure and utilizing the physical isolation effect of the layered clay combustion process, and had a certain synergistic effect on ammonium polyphosphate, melamine and pentaerythritol.

Test example 3

The compressive strength of the anticorrosive fireproof primer of the embodiment 4-10 is tested according to GB 14907-2002 Steel Structure fireproof paint: manually stirring the anti-corrosion fireproof primer to form uniform slurry, sequentially dividing the mixed coating slurry into two layers, placing the two layers into a mortar three-link mold test mold with the size of 40mm multiplied by 160mm for molding, adopting a manual vibration mode in the molding process, slightly shaking, inserting, tamping and leveling, demolding after the basic drying and curing, adopting air curing (the temperature is 5-35 ℃ and the relative humidity is 50-80%) after the molding, placing the molded.

The specific test results are shown in table 3.

TABLE 3 compressive Strength results Table

Test example 4

The anticorrosive performance of the anticorrosive fireproof primer of the embodiments 4-10 is tested.

The anticorrosion performance of the anticorrosion fireproof primer is carried out according to the method specified in GB/T1763-1979, about 2/3 volume of the sample is immersed into a saturated sodium chloride solution, whether the coating has the phenomena of peeling, bubbling, rusting, discoloring, light loss and the like is observed at intervals, and the longest time that the coating does not change is taken as the performance index.

The test panels were prepared as in test example 1.

The specific test results are shown in table 4.

TABLE 4 results of corrosion resistance

From the above test examples, it can be known that, in the present invention, lamellar bentonite is used as one of the ingredients for preparing the fire-retardant additive, while the structure of the fire-retardant additive is introduced with a tertiary nitrogen structure and a stable triazine ring structure, the physical isolation effect of the combustion process of the lamellar clay is utilized to increase the expansion height of the carbonized layer, so as to obtain the fire-retardant additive with good char formation capability and thermal stability, and the material with lamellar structure and strong hydrophobicity forms a curved channel in the coating, so as to effectively improve the water resistance of the fire-retardant anticorrosive coating.

The working principle of the invention is as follows: when in connection, the supporting platform and the main steel frame are firstly connected and fixed, then the hydraulic lifting column is arranged on the supporting platform and is connected and fixed with the lifting platform, the lifting platform is connected with the main steel frame, the lifting equipment is arranged on the lifting platform in sequence, the connection between the lifting platform and the main steel frame is disconnected after the assembly is finished, the lifting platform is connected with the main steel frame after the hydraulic prop lifts the lifting platform to the next installation position, the connection between the supporting platform and the main steel frame is disconnected after the connection is finished, the hydraulic lifting column is upwards stretched in the opposite direction, the supporting platform is connected with the main steel frame after reaching the proper position, after the lifting equipment is finished, the lifting equipment starts to work, after the vertical telescopic arm reaches the proper height, the transverse telescopic arm is lifted to the proper angle and then extends to the proper position, after the adjustment is finished, the motor starts to work, and the whole equipment is connected with the main steel, the stress is born by the platform and the main steel frame, and the hydraulic lifting column is not stressed.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a jacking equipment of steel construction elevator derrick installation usefulness which characterized in that: the lifting device comprises a body, wherein the body comprises an elevator derrick, a supporting platform is arranged at the bottom surface of the inner side of the elevator derrick, a hydraulic lifting column is arranged at the top surface of the supporting platform, a lifting platform is arranged at the position between the top surfaces of the hydraulic lifting columns, and a vertical telescopic arm is arranged at the middle position of the top surface of the lifting platform; telescopic round steel columns are arranged at the positions of the front side and the rear side of the lifting platform, and jacks matched with the telescopic round steel columns are arranged at the positions of the surface of the elevator derrick; the surface of the elevator derrick is coated with an anticorrosive fireproof primer;

s3, adding the prepared component A, the prepared component B and the prepared functional fibers into a high-speed ball milling dispersion machine according to a certain proportion, and grinding for 10-20 minutes; stirring at a low speed until no granular sensation exists, thus obtaining the anticorrosive fireproof primer;

the fire retardant additive is obtained by the following steps: pouring 0.1-0.3 mol of cyanuric chloride and 100-200 mL of acetonitrile into a reaction device under stirring for dissolving to obtain acetonitrile solution of cyanuric chloride; then, adding a mixed solution of 0.1-0.3 mol of 1-oxyphosphia-4-hydroxymethyl-2, 6, 7-trioxabicyclo [2.2.2] octane and 0.1-0.3 mol of triethylamine dissolved in 150-250 mL of acetonitrile into an acetonitrile solution of cyanuric chloride, and reacting for 2-4 hours at 10-15 ℃ in a nitrogen atmosphere to obtain a reaction solution I; ultrasonically dispersing 2-3 g of sodium bentonite for 1-2 hours by using 50-150 mL of acetonitrile, then pouring 0.1-0.3 mol of piperazine dissolved in 50-150 mL of acetonitrile into the sodium bentonite, and continuously ultrasonically dispersing for 20-30 minutes to obtain an ultrasonic dispersion liquid; adding the ultrasonic dispersion liquid into the reaction liquid I, adding 0.3-0.6 mol of triethylamine, and reacting for 2-4 hours while stirring at the temperature of 40-50 ℃ to obtain a reaction liquid II; finally, raising the temperature of the reaction liquid II to the reflux temperature, and reacting for 5-10 hours; after the reaction is completed, cooling the reactant to 20-30 ℃, filtering, and collecting a filter cake; and washing the filter cake with water and absolute ethyl alcohol in sequence, and then drying in vacuum to obtain the fireproof additive.

2. The steel structure lifting device for installation of an elevator mast of claim 1, wherein: the starch modifier comprises the following synthetic steps: adding 15-60 g of starch and 15-60 g of melamine into a reaction device, adding 50-200 mL of 1, 2-dichloroethane, heating to reflux temperature, and reacting for 4-10 hours; naturally cooling to 20-30 ℃, filtering, and collecting a filter cake; washing the filter cake with dichloromethane, drying in vacuum to constant weight, crushing and sieving to obtain the starch modifier; the starch is one or a mixture of more of pure starch, carboxyl starch and cross-linked starch.

3. The steel structure lifting device for installation of an elevator mast of claim 1, wherein: the vertical telescopic boom is connected with a transverse telescopic boom, and a rotary fixed gear is connected at a position between the transverse telescopic boom and the vertical telescopic boom.

4. The steel structure lifting device for installation of an elevator mast of claim 1, wherein: the lifting platform is characterized in that a rotating disc is arranged at the position of the top surface of the lifting platform, the vertical telescopic arm is fixed on the rotating disc, and a fixing bolt is arranged at the position between the rotating disc and the lifting platform.

5. The steel structure lifting device for installation of an elevator mast of claim 1, wherein: the hydraulic lifting column can be stretched towards two sides.

6. The steel structure lifting device for installation of an elevator mast of claim 1, wherein: the telescopic round steel column is of a solid structure.