阅读说明：本技术 一种海洋工程钢结构加工用切削装置 (Cutting device is used in ocean engineering steel construction processing ) 是由 何伟 于 2021-08-05 设计创作，主要内容包括：本发明涉及海洋工程技术领域,且公开了一种海洋工程钢结构加工用切削装置,包括箱体,箱体内壁顶部固定连接有电动伸缩杆,箱体内壁底部设置有钢结构,电动伸缩杆底部固定连接有储液箱,储液箱底部固定连接有电动切割机,箱体内部设置有切削液同步喷洒机构。本发明通过设置切削液同步喷洒机构,会对电动切割机进行喷洒涂油,从而保护了电动切割机切割的刀片,也使得钢结构顶部在被切割的时候不会因为碎屑的摩擦而导致钢结构从顶部被电动切割机切割时造成的内部损伤,继而也可以使得电动切割机与钢结构之间的摩擦力减小,提升切割效率,并且进一步的节省切削液的使用,保证每一次在切割的时候,切削液才会自动喷出进行工作。(The invention relates to the technical field of ocean engineering and discloses a cutting device for machining an ocean engineering steel structure. The cutting fluid synchronous spraying mechanism is arranged, so that the electric cutting machine can be sprayed and oiled, a cutting blade of the electric cutting machine is protected, internal damage caused when the steel structure is cut by the electric cutting machine from the top due to friction of chips can be avoided when the top of the steel structure is cut, the friction force between the electric cutting machine and the steel structure can be reduced, the cutting efficiency is improved, the use of the cutting fluid is further saved, and the cutting fluid can be automatically sprayed out to work when cutting is carried out each time.)

1. A cutting device for machining a steel structure of ocean engineering comprises a box body (2), wherein an electric telescopic rod (1) is fixedly connected to the top of the inner wall of the box body (2), a steel structure (5) is arranged at the bottom of the inner wall of the box body (2), a liquid storage tank (4) is fixedly connected to the bottom of the electric telescopic rod (1), an electric cutting machine (6) is fixedly connected to the bottom of the liquid storage tank (4), and a cutting liquid synchronous spraying mechanism (3) is arranged inside the box body (2);

the method is characterized in that: the cutting fluid synchronous spraying mechanism (3) comprises an elastic column (301), a poke rod (302), a connecting block (303), a connecting rod (304), a lifting pressure plate (305), an elastic plate (306), a spraying groove (307) and a spraying guide block (308), wherein one end of the elastic column (301) is fixedly connected with one side of the inner wall of the box body (2), one end of the poke rod (302) is fixedly connected with the outer wall of the connecting block (303), the inner wall of the connecting block (303) is connected with a supporting block through a rotating block in a sliding manner, the outer wall of the supporting block is fixedly connected with the two sides of the liquid storage box (4), the outer wall of the connecting block (303) is fixedly connected with one end of the connecting rod (304), the other end of the connecting rod (304) is hinged with one end of the lifting pressure plate (305), the bottom of the lifting pressure plate (305) penetrates through the top of the liquid storage box (4) and is connected with the inner wall of the liquid storage box (4) in a sliding manner, and the bottom of the lifting pressure plate (305) is fixedly connected with one end of the elastic plate (306), elastic plate (306) other end and liquid reserve tank (4) inner wall one side fixed connection, spray groove (307) set up in liquid reserve tank (4) and spray guide block (308) inner wall, spray guide block (308) top and liquid reserve tank (4) bottom fixed connection.

2. The cutting device for machining the marine engineering steel structure according to claim 1, wherein the cutting device comprises: liquid reserve tank (4) are including gas receiver (401), dog (402), rising pushing mechanism (403), articulated rod (404), slide (405), circular port (406), gas receiver (401) are seted up at liquid reserve tank (4) inner wall, dog (402) outer wall and liquid reserve tank (4) inner wall fixed connection, rising pushing mechanism (403) set up at liquid reserve tank (4) inner wall, articulated rod (404) one end is articulated with slide (405) bottom, slide (405) outer wall and liquid reserve tank (4) inner wall sliding connection, circular port (406) are seted up at slide (405) inner wall.

3. The cutting device for machining the marine engineering steel structure according to claim 2, wherein the cutting device comprises: the lifting pushing mechanism (403) comprises a push plate (501), a small elastic plate (502), a lifting push block (503), a pull rod (504), a baffle (505) and an elastic strip (506), wherein the bottom of the push plate (501) is in contact with the top of the stop block (402), the top of the push plate (501) is fixedly connected with one end of the small elastic plate (502), the other end of the small elastic plate (502) is fixedly connected with the bottom of the lifting push block (503), the outer wall of the lifting push block (503) is in sliding connection with the inner wall of the liquid storage tank (4), the top of the lifting push block (503) is hinged with one end of a hinged rod (404), the top of the push plate (501) is fixedly connected with one end of the pull rod (504), the other end of the pull rod (504) penetrates through the inner wall of the lifting push block (503) and is fixedly connected with the bottom of the baffle (505), the outer wall of the pull rod (504) is in sliding connection with the inner wall of the lifting push block (503), and the outer wall of the baffle (505) is in sliding connection with the inner wall of the lifting push block (503), elastic strip (506) one end and liquid reserve tank (4) inner wall fixed connection, elastic strip (506) outer wall and lift ejector pad (503) inner wall contact.

4. The cutting device for machining the marine engineering steel structure according to claim 3, wherein the cutting device comprises: the number of the circular holes (406) is two, and the two circular holes (406) are respectively arranged on the left side and the right side of the inner wall of the sliding plate (405).

5. The cutting device for machining the marine engineering steel structure according to claim 4, wherein the cutting device comprises: the inside spout of having seted up of connecting block (303), connecting block (303) inner wall passes through spout and the positive sliding connection of supporting shoe.

6. The cutting device for machining the marine engineering steel structure according to claim 5, wherein the cutting device comprises: the front surface of the box body (2) is hinged with a box door.

7. The cutting device for machining the marine engineering steel structure according to claim 6, wherein the cutting device comprises: the front surface of the liquid storage tank (4) is fixedly provided with a cover cap.

Technical Field

The invention relates to the technical field of ocean engineering, in particular to a cutting device for machining an ocean engineering steel structure.

Background

The ocean engineering refers to new construction, reconstruction and extension engineering which aims at developing, utilizing, protecting and recovering ocean resources and is characterized in that an engineering main body is positioned on one side of a coastline towards the sea. Generally, the main contents of ocean engineering can be divided into two parts, namely resource development technology and equipment facility technology, and specifically include: the method comprises the following steps of sea reclamation, sea dam engineering, artificial islands, sea and seabed material storage facilities, sea-crossing bridges, sea bottom tunnel engineering, seabed pipelines, seabed electric (optical) cable engineering, sea mineral resource exploration and development and auxiliary engineering thereof, sea energy development and utilization engineering such as offshore tidal power stations, wave power stations, temperature difference power stations and the like, seawater comprehensive utilization engineering such as large-scale seawater farms, artificial fish reef engineering, salt fields, seawater desalination and the like, sea entertainment and sports, landscape development engineering and other ocean engineering specified by the national ocean administration and the national institute of environmental protection administration. Construction in the ocean engineering need use a large amount of steel construction, at present in the steel construction processing cutting, need use water-soluble cutting fluid and oil-soluble cutting fluid, but the initial stage through using oil-soluble cutting fluid cutting efficiency at the cutting is higher, but after cutting a period, when producing high temperature, just need switch to spraying water-soluble cutting fluid through the manual work and cool down to increase staff's work burden, and extravagant a large amount of human cost and time cost.

Disclosure of Invention

The invention aims to provide a cutting device for processing a steel structure in ocean engineering, and the cutting device is used for solving the problems.

In order to achieve the purpose, the invention provides the following technical scheme: a cutting device for machining a steel structure of ocean engineering comprises a box body, wherein an electric telescopic rod is fixedly connected to the top of the inner wall of the box body, a steel structure is arranged at the bottom of the inner wall of the box body, a liquid storage tank is fixedly connected to the bottom of the electric telescopic rod, an electric cutting machine is fixedly connected to the bottom of the liquid storage tank, and a cutting fluid synchronous spraying mechanism is arranged inside the box body;

the cutting fluid synchronous spraying mechanism comprises an elastic column, a poke rod, a connecting block, a connecting rod, a pressure rising and dropping plate, an elastic plate, a spraying groove and a spraying guide block, one end of the elastic column is fixedly connected with one side of the inner wall of the box body, one end of the poke rod is fixedly connected with the outer wall of the connecting block, the inner wall of the connecting block is connected with a supporting block through a rotating block in a sliding way, the outer wall of the supporting block is fixedly connected with the two sides of the liquid storage tank, the outer wall of the connecting block is fixedly connected with one end of a connecting rod, the other end of the connecting rod is hinged with one end of a lifting pressure plate, the bottom of the pressure rising and reducing plate penetrates through the top of the liquid storage tank and is in sliding connection with the inner wall of the liquid storage tank, the bottom of the pressure rising and reducing plate is fixedly connected with one end of the elastic plate, the elastic plate other end and liquid reserve tank inner wall one side fixed connection, spray the groove and set up at the liquid reserve tank and spray guide block inner wall, spray guide block top and liquid reserve tank bottom fixed connection.

Preferably, the liquid storage tank comprises an air storage tank, a stop block, a lifting pushing mechanism, a hinge rod, a sliding plate and a circular hole, the air storage tank is arranged on the inner wall of the liquid storage tank, the outer wall of the stop block is fixedly connected with the inner wall of the liquid storage tank, the lifting pushing mechanism is arranged on the inner wall of the liquid storage tank, one end of the hinge rod is hinged with the bottom of the sliding plate, the outer wall of the sliding plate is connected with the inner wall of the liquid storage tank in a sliding manner, the circular hole is arranged on the inner wall of the sliding plate so as to spray different cutting fluids to the steel structure at different temperatures, the friction force and the kinetic energy loss are smaller in the cutting process of the steel structure and the electric cutting machine through the spraying of the oil-soluble cutting fluid at the middle and low temperatures, so that the steel structure is cut more finely by a blade of the electric cutting machine, and the water-soluble cutting fluid is automatically switched to be sprayed to lubricate the steel structure and the electric cutting machine while the steel structure is rapidly cooled, thereby protection steel construction and electric cutting machine can not be because of high temperature is overheated and damage, reduces artifical manual a large amount of manpower and the time of switching the waste then.

Preferably, the promotion mechanism that rises includes push pedal, little elastic plate, lift ejector pad, pull rod, baffle, elastic strip, push pedal bottom and dog top contact, push pedal top and little elastic plate one end fixed connection, little elastic plate other end and lift ejector pad bottom fixed connection, lift ejector pad outer wall and liquid reserve tank inner wall sliding connection, lift ejector pad top is articulated with hinge bar one end, push pedal top and pull rod one end fixed connection, the pull rod other end run through lift ejector pad inner wall and with baffle bottom fixed connection, pull rod outer wall and lift ejector pad inner wall sliding connection, baffle outer wall and lift ejector pad inner wall sliding connection, elastic strip one end and liquid reserve tank inner wall fixed connection, elastic strip outer wall and lift ejector pad inner wall contact to thereby can through the rapid rise promotion slide of lift ejector pad behind the high temperature with the circular port promptly switch over to water-soluble cutting fluid with the coincidence of spray groove thereby oil-soluble cutting fluid to water-soluble cutting fluid in the twinkling of an eye Cutting fluid of nature to guarantee quick cooling to electric cutting machine and steel construction, avoided then because switching speed too slow and can't in time cool down behind the high temperature that leads to or just begin to heat up and just not yet when high temperature water-soluble cutting fluid just together run out with oil-soluble cutting fluid and lead to the unable maximum lubrication work of performance of steel construction and electric cutting machine, thereby influence it and cut.

Preferably, the connecting block is internally provided with a sliding groove, the inner wall of the connecting block is in sliding connection with the front surface of the supporting block through the sliding groove, so that the poke rod can be poked to drive the connecting block to slide on the supporting block and drive the connecting rod to push the lifting pressing plate to press downwards.

Preferably, the front surface of the box body is hinged with a box door.

Preferably, the circular port quantity is two, two the left side and the right side at the slide inner wall are seted up respectively to the circular port to carry out the switching between oil-soluble cutting fluid and the water-soluble cutting fluid.

Preferably, the front surface of the liquid storage tank is fixedly provided with a cover cap.

The invention provides a cutting device for processing an ocean engineering steel structure. The method has the following beneficial effects:

(1) the invention starts the electric telescopic rod to push the liquid storage tank to descend by arranging the cutting fluid synchronous spraying mechanism, the liquid storage tank descends until the poke rod is contacted with the elastic column and the poke rod is poked to upwarp, the connecting rod is pushed down by the connecting block to drive the lifting and lowering plate to synchronously press down on the inner wall of the liquid storage tank and push the oil-soluble cutting fluid on the right side of the cavity in the liquid storage tank, the oil-soluble cutting fluid is sprayed out by the spraying groove to spray the blade on the bottom of the electric cutting machine, the water-soluble cutting fluid on the left side of the cavity in the liquid storage tank is sealed and cannot be sprayed out, meanwhile, the poke rod on the left side cannot be poked by the elastic column, so that the elastic column deforms through the elasticity of the self, and can spray the oil on the surface of the steel structure and the blade on the bottom of the electric cutting machine through one end of the poke rod, thereby simultaneously spraying and guiding block can spray the oil on the blade on the surface of the steel structure and the bottom of the electric cutting machine when the liquid storage tank is driven by the electric telescopic rod, thereby protected the blade of electric cutting machine cutting, also made the steel construction top can not lead to the steel construction from the top to be the inside damage that causes when being cut by electric cutting machine because of clastic friction, then also can make the frictional force between electric cutting machine and the steel construction reduce, promote cutting efficiency to further use of saving the cutting fluid, guarantee each time in the cutting, the cutting fluid just can carry out work by automatic blowout.

(2) The invention sprays different cutting fluids at different temperatures by arranging the liquid storage tank, so that the friction force and the kinetic energy loss in the cutting process of the steel structure and the electric cutting machine are smaller by spraying the oil-soluble cutting fluid at medium and low temperatures, the blade of the electric cutting machine is protected, the steel structure is cut more finely, and the blade is automatically switched to spray the water-soluble cutting fluid at high temperature, so that the steel structure and the electric cutting machine are lubricated and cooled rapidly, the steel structure and the electric cutting machine are protected from being damaged due to high-temperature overheating, and a large amount of manpower and time wasted by manual switching are reduced.

(3) According to the invention, the lifting pushing mechanism is arranged, so that the sliding plate and the circular hole can be rapidly pushed to be overlapped with the spraying groove through rapid lifting of the lifting pushing block after high temperature, and the oil-soluble cutting fluid is instantly switched to the water-soluble cutting fluid, thereby ensuring rapid cooling of the electric cutting machine and the steel structure, and further avoiding that the steel structure and the electric cutting machine cannot perform maximum lubrication work due to the fact that the water-soluble cutting fluid cannot be timely cooled after high temperature or the water-soluble cutting fluid and the oil-soluble cutting fluid run out when the temperature just begins to rise and is not yet high temperature because of too low switching speed, and further influencing the cutting of the steel structure and the electric cutting machine.

Drawings

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

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

FIG. 3 is a cutting fluid synchronous spraying mechanism of the present invention;

FIG. 4 is an enlarged view taken at A of FIG. 2 according to the present invention;

FIG. 5 is an enlarged view of the invention at B of FIG. 4.

In the figure: 1 electric telescopic rod, 2 boxes, 3 cutting fluid synchronous spraying mechanisms, 301 elastic columns, 302 poking rods, 303 connecting blocks, 304 connecting rods, 305 lifting and dropping plates, 306 elastic plates, 307 spraying grooves, 308 spraying guide blocks, 4 liquid storage tanks, 401 gas storage tanks, 402 stop blocks, 403 lifting and pushing mechanisms, 404 hinge rods, 405 sliding plates, 406 circular holes, 501 pushing plates, 502 small elastic plates, 503 lifting and pushing blocks, 504 pull rods, 505 baffle plates, 506 elastic strips, 5 steel structures and 6 electric cutting machines.

Detailed Description

As shown in fig. 1 to 5, the present invention provides a technical solution: a cutting device for processing a steel structure of ocean engineering comprises a box body 2, a box door is hinged on the front surface of the box body 2, an electric telescopic rod 1 is fixedly connected on the top of the inner wall of the box body 2, a steel structure 5 is arranged at the bottom of the inner wall of the box body 2, a liquid storage box 4 is fixedly connected at the bottom of the electric telescopic rod 1, a cover cap is fixedly arranged on the front surface of the liquid storage box 4, the liquid storage box 4 comprises an air storage tank 401, a stop block 402 and an ascending pushing mechanism 403, the ascending pushing mechanism 403 comprises a push plate 501, a small elastic plate 502, an ascending push block 503, a pull rod 504, a baffle 505 and an elastic strip 506, the bottom of the push plate 501 is contacted with the top of the stop block 402, the top of the push plate 501 is fixedly connected with one end of the small elastic plate 502, the other end of the small elastic plate 502 is fixedly connected with the bottom of the ascending push block 503, the outer wall of the ascending push block 503 is slidably connected with the inner wall of the liquid storage box 4, the top of the ascending push block 503 is hinged with one end of a hinge rod 404, the top of the push plate 501 is fixedly connected with one end of the pull rod 504, the other end of the pull rod 504 penetrates through the inner wall of the lifting push block 503 and is fixedly connected with the bottom of the baffle 505, the outer wall of the pull rod 504 is slidably connected with the inner wall of the lifting push block 503, the outer wall of the baffle 505 is slidably connected with the inner wall of the lifting push block 503, one end of the elastic strip 506 is fixedly connected with the inner wall of the liquid storage tank 4, the outer wall of the elastic strip 506 is contacted with the inner wall of the lifting push block 503, and the lifting push mechanism 403 is arranged, so that the sliding plate 405 and the circular hole 406 can be rapidly pushed to be rapidly overlapped with the spraying groove 307 by rapid rising of the lifting push block 503 after high temperature, the oil-soluble cutting fluid is instantly switched to the water-soluble cutting fluid, rapid cooling of the electric cutting machine 6 and the steel structure 5 is ensured, and further, the problem that the steel structure 5 and the electric cutting machine 6 cannot perform maximum lubrication work due to the fact that the water-soluble cutting fluid cannot be timely cooled after high temperature due to too slow switching speed or the water-soluble cutting fluid and the oil-soluble cutting fluid just start to rise to high temperature are not yet is discharged together, thereby influencing the cutting of the steel structure 5, the hinged rod 404, the sliding plate 405 and the circular holes 406, the number of the circular holes 406 is two, the two circular holes 406 are respectively arranged at the left side and the right side of the inner wall of the sliding plate 405, the air storage tank 401 is arranged at the inner wall of the liquid storage tank 4, the outer wall of the stop block 402 is fixedly connected with the inner wall of the liquid storage tank 4, the ascending pushing mechanism 403 is arranged at the inner wall of the liquid storage tank 4, one end of the hinged rod 404 is hinged with the bottom of the sliding plate 405, the outer wall of the sliding plate 405 is slidably connected with the inner wall of the liquid storage tank 4, the circular holes 406 are arranged at the inner wall of the sliding plate 405, through arranging the liquid storage tank 4, different cutting fluids are sprayed at different temperatures, at a medium and low temperature, the friction force is smaller in the cutting process of the steel structure 5 and the electric cutting machine 6 through the spraying of the oil-soluble cutting fluid, the loss of the kinetic energy is smaller, thereby protecting the blade of the electric cutting machine 6 to ensure that the steel structure 5 is cut more finely, at high temperature, the water-soluble cutting fluid is automatically switched to be sprayed, so that the steel structure 5 and the electric cutting machine 6 are lubricated and cooled rapidly at the same time, the steel structure 5 and the electric cutting machine 6 are protected from being damaged due to high-temperature overheating, a large amount of manpower and time wasted by manual switching are reduced, the electric cutting machine 6 is fixedly connected to the bottom of the liquid storage tank 4, the cutting fluid synchronous spraying mechanism 3 is arranged inside the tank body 2, the electric telescopic rod 1 is started to push the liquid storage tank 4 to descend by arranging the cutting fluid synchronous spraying mechanism 3, the liquid storage tank 4 descends until the poke rod 302 is contacted with the elastic column 301 and the poke rod 302 is poked to tilt upwards, the connecting rod 304 is pressed downwards through the connecting block 303 to drive the lifting and reducing plate 305 to be pressed downwards on the inner wall of the liquid storage tank 4 synchronously and to push the oil-soluble cutting fluid on the right side of the cavity inside the liquid storage tank 4, the water-soluble cutting fluid on the left side of the cavity in the liquid storage tank 4 is sealed and cannot be sprayed out, meanwhile, the poke rod 302 on the left side cannot be poked by the elastic column 301, so that the elastic column 301 deforms through the elasticity of the elastic column 301, and one end of the poke rod 302 can be used, so that when the liquid storage tank 4 is driven by the electric telescopic rod 1 to push the electric cutting machine 6 to descend to cut the steel structure 5, the surface of the steel structure 5 and the blades at the bottom of the electric cutting machine 6 can be sprayed and oiled simultaneously through the spraying guide block 308, the blades cut by the electric cutting machine 6 are protected, the internal damage caused when the steel structure 5 is cut by the electric cutting machine 6 from the top due to the friction of chips can be avoided when the top of the steel structure 5 is cut, and then the friction force between the electric cutting machine 6 and the steel structure 5 can be reduced, the cutting efficiency is improved, the use of cutting fluid is further saved, and the cutting fluid is guaranteed to be automatically sprayed out to work every time when cutting is carried out;

the cutting fluid synchronous spraying mechanism 3 comprises an elastic column 301, a poke rod 302 and a connecting block 303, wherein a sliding groove is formed in the connecting block 303, the inner wall of the connecting block 303 is in sliding connection with the front surface of a supporting block through the sliding groove, the connecting rod 304, a lifting pressure plate 305, an elastic plate 306, a spraying groove 307 and a spraying guide block 308 are arranged in the connecting block 303, one end of the elastic column 301 is fixedly connected with one side of the inner wall of a box body 2, one end of the poke rod 302 is fixedly connected with the outer wall of the connecting block 303, the inner wall of the connecting block 303 is in sliding connection with the supporting block through a rotating block, the outer wall of the supporting block is fixedly connected with two sides of a liquid storage box 4, the outer wall of the connecting block 303 is fixedly connected with one end of the connecting rod 304, the other end of the connecting rod 304 is hinged with one end of the lifting pressure plate 305, the bottom of the lifting pressure plate 305 penetrates through the top of the liquid storage box 4 and is in sliding connection with the inner wall of the liquid storage box 4, the bottom of the lifting pressure plate 305 is fixedly connected with one end of the elastic plate 306, the other end of the elastic plate 306 is fixedly connected with one side of the inner wall of the liquid storage box 4, the spraying groove 307 is arranged on the inner walls of the liquid storage tank 4 and the spraying guide block 308, and the top of the spraying guide block 308 is fixedly connected with the bottom of the liquid storage tank 4.

When the cutting tool is used, a box door on the front side of the box body 2 is opened, then the steel structure 5 is placed at the bottom of the inner wall of the box body 2, then the electric telescopic rod 1 is started to push the liquid storage box 4 to descend, the liquid storage box 4 descends until the poke rod 302 is contacted with the elastic column 301 and the poke rod 302 is poked to upwarp, the connecting rod 304 is pushed down through the connecting block 303 to drive the pressure rising and dropping plate 305 to synchronously push down on the inner wall of the liquid storage box 4 and push the oil-soluble cutting fluid on the right side of the cavity inside the liquid storage box 4, the oil-soluble cutting fluid is sprayed out through the spraying groove 307 to spray the blade at the bottom of the electric cutting machine 6, the water-soluble cutting fluid on the left side of the cavity inside the liquid storage box 4 is sealed and cannot be sprayed out, meanwhile, the poke rod 302 on the left side cannot be pushed by the elastic column 301, so that the elastic column 301 is deformed through the elasticity of itself, one end of the poke rod 302 can be passed, thereby when the liquid storage box 4 is driven by the electric telescopic rod 1 to push the electric cutting machine 6 to descend to cut the steel structure 5, the spraying and oil coating can be synchronously carried out on the surface of the steel structure 5 and the blade at the bottom of the electric cutting machine 6 through the spraying guide block 308, so that the blade for cutting by the electric cutting machine 6 is protected, the internal damage caused when the steel structure 5 is cut by the electric cutting machine 6 from the top due to the friction of chips can be avoided when the top of the steel structure 5 is cut, the friction between the electric cutting machine 6 and the steel structure 5 can be reduced, the cutting efficiency is improved, the use of cutting fluid is further saved, the cutting fluid is ensured to be automatically sprayed out to work when the steel structure is cut every time, meanwhile, when the electric cutting machine 6 cuts the steel structure 5, the temperature is increased, so that the air in the air storage tank 401 is heated, the air expands to push the lifting pushing mechanism 403 to integrally lift, and the sliding plate 405 is pushed to slide leftwards through the hinge rod 404, the sliding plate 405 moves leftwards to coincide with the spraying groove 307 through the circular hole 406, and the circular hole 406 on the right side inside the sliding plate 405 is pulled to be separated from the coincidence with the spraying groove 307, so that the left cavity inside the liquid storage tank 4 is communicated with the inside of the spraying groove 307, the right cavity inside the liquid storage tank 4 is sealed with the inside of the spraying groove 307, so that when the electric cutting machine 6 is pushed to descend, the oil-soluble cutting fluid on the right side inside the liquid storage tank 4 cannot be sprayed out, the water-soluble cutting fluid on the left side inside the liquid storage tank 4 can be communicated with the spraying groove 307 and sprayed out, so that different cutting fluids are sprayed on the steel structure 5 at different temperatures, and at medium and low temperatures, the friction force is smaller in the cutting process of the steel structure 5 and the electric cutting machine 6 through the spraying of the oil-soluble cutting fluid, the loss of kinetic energy is smaller, and the blade of the electric cutting machine 6 is protected to ensure that the steel structure 5 is cut more finely, at high temperature, the water-soluble cutting fluid is automatically sprayed, so that the steel structure 5 and the electric cutting machine 6 are lubricated and cooled rapidly, the steel structure 5 and the electric cutting machine 6 are protected from being damaged due to high-temperature overheating, a large amount of manpower and time wasted by manual switching are reduced, meanwhile, air in the air storage tank 401 is heated to expand and can automatically push the push plate 501 in the lifting pushing mechanism 403, the push plate 501 is pushed to rise and pushes the lifting push block 503 through the small elastic plate 502, the lifting push block 503 is blocked by the elastic strip 506, so that only when the push plate 501 rises to a certain degree to cause the small elastic plate 502 to continuously deform, and thus a certain rebound force is increased, the lifting push block 503 can be pushed to rebound to the elastic strip 506 through the small elastic plate 502 to deform, and the lifting push block 503 is separated from the elastic strip 506, meanwhile, the lifting push block 503 is quickly rebounded by the small elastic plate 502 at the moment of being separated from the elastic strip 506 to be pushed upwards so that the lifting push block 503 quickly pushes the sliding plate 405 through the hinge rod 404, thereby the circular hole 406 inside the sliding plate 405 can be quickly coincided and communicated with the inside of the spraying groove 307, and then quick switching can be performed after a certain temperature is reached, meanwhile, after the temperature is reduced, air inside the air storage tank 401 retracts to drive the push plate 501 to descend, the push plate 501 descends to directly pull the lifting push block 503 to descend to the elastic strip 506 to deform through the pull rod 504 and the baffle 505, so that the elastic strip 506 enters the inner wall of the lifting push block 503 after being deformed to return to the original position, thereby the sliding plate 405 is quickly coincided with the circular hole 406 and the spraying groove 307 through the quick ascending of the lifting push block 503 after the high temperature, so that the oil-soluble cutting fluid is instantly switched to the water-soluble cutting fluid, thereby guarantee quick cooling to electric cutting machine 6 and steel construction 5, avoided then because switching speed too slow and can't in time cool down behind the high temperature that leads to or just begin to heat up and just not yet when high temperature water-soluble cutting fluid just together run out with oil-soluble cutting fluid and lead to the unable maximum lubrication work of exerting of steel construction 5 and electric cutting machine 6 to influence it and cut.