阅读说明：本技术 智能化高频钢铁表面焊接预热装置 (Intelligent high-frequency steel surface welding preheating device ) 是由 陈勇 王晓音 于 2021-06-29 设计创作，主要内容包括：本发明公开了智能化高频钢铁表面焊接预热装置,其技术方案是：包括外壳,所述外壳顶部固定连接有两个支架,两个所述支架内部均开设有空腔一,所述外壳底部开设有空腔二,两个所述支架内侧设有钢铁本体,所述钢铁本体两侧均设有固定组件,所述外壳内部设有预热机构,所述预热机构包括电机,所述电机固定连接在外壳一侧,所述电机外部设有保护组件,本发明的有益效果是：使空气达到可以对钢铁进行预热的温度,并且通过加热箱转动就可以使空气被均匀的加热,这样就不会出现空气加热不充分的现象,并且转轴三转动可以带动混合杆转动,并且混合杆的转动方向与加热箱的转动方向相反,这样就可以提高空气被加热的效率还可以保证空气被均匀的加热。(The invention discloses an intelligent high-frequency steel surface welding preheating device, which adopts the technical scheme that: the steel body preheating device comprises a shell, wherein two supports are fixedly connected to the top of the shell, a first cavity is formed in each of the two supports, a second cavity is formed in the bottom of the shell, steel bodies are arranged on the inner sides of the two supports, fixing assemblies are arranged on two sides of each steel body, a preheating mechanism is arranged in each shell and comprises a motor, the motor is fixedly connected to one side of each shell, and a protection assembly is arranged outside each motor. Make the air reach the temperature that can preheat the steel and iron to rotate through the heating cabinet and just can make the air by even heating, just so can not appear the insufficient phenomenon of air heating, and the rotation of pivot three can drive the hybrid beam and rotate, and the rotation direction of hybrid beam is opposite with the rotation direction of heating cabinet, just so can improve the efficiency that the air is heated and can also guarantee that the air is by even heating.)

1. Intelligent high frequency steel surface welding preheating device, including shell (1), its characterized in that: the top of the shell (1) is fixedly connected with two supports (2), a first cavity is formed in each of the two supports (2), a second cavity is formed in the bottom of the shell (1), steel bodies (3) are arranged on the inner sides of the two supports (2), fixing assemblies are arranged on two sides of each steel body (3), and a preheating mechanism is arranged in the shell (1);

the preheating mechanism comprises a motor (4), the motor (4) is fixedly connected to one side of a shell (1), a protection assembly is arranged outside the motor (4), a heating box (5) is arranged inside the shell (1), the top end of the heating box (5) extends to the outer side of the top of the shell (1), the heating box (5) is connected with the shell (1) through a bearing, a fixing block (6) is fixedly connected to the inner wall of the bottom of the shell (1), the top end of the fixing block (6) extends to the inside of the heating box (5) and is connected with the heating box (5) through a bearing, a cavity III is formed in the bottom of the fixing block (6) and the bottom of the shell (1), one cavity I is internally provided with a reciprocating lead screw (7), one end of the reciprocating lead screw (7) extends to the inside of the other cavity I, and the reciprocating lead screw (7) is located at the bottom of the steel body (3), the reciprocating screw rod (7) is externally sleeved with a bearing seat (8), the bearing seat (8) is connected with the reciprocating screw rod (7) through a ball nut pair, the reciprocating screw rod (7) is connected with the support (2) through a bearing, and two bases (47) are fixedly connected to the bottom of the shell (1).

2. The intelligent high-frequency steel surface welding preheating device according to claim 1, characterized in that: bearing frame (8) front side fixedly connected with nozzle (9), nozzle (9) bottom fixedly connected with hose (10), hose (10) bottom fixedly connected with connecting pipe (11), connecting pipe (11) bottom extends to heating cabinet (5) inside and is connected through the bearing with heating cabinet (5), bearing frame (8) bottom fixedly connected with stopper (12), two support (2) inboard fixedly connected with limiting plate (13), limiting plate (13) are located bearing frame (8) bottom, the spacing groove has been seted up at limiting plate (13) top, stopper (12) inlay establish at spacing inslot portion and with the spacing groove phase-match.

3. The intelligent high-frequency steel surface welding preheating device according to claim 1, characterized in that: the output shaft of the motor (4) is fixedly connected with a first rotating shaft (14), one end of the first rotating shaft (14) extends into the shell (1), the inner wall of the top of the shell (1) is connected with a second rotating shaft (15), the bottom end of the second rotating shaft (15) extends into the cavity II, the second rotating shaft (15) is positioned on one side of the first rotating shaft (14), one end of the first rotating shaft (14) is fixedly connected with a first bevel gear (16), one side of the first bevel gear (16) is provided with a second bevel gear (17), the second bevel gear (17) is meshed with the first bevel gear (16), the second bevel gear (17) is fixedly sleeved outside the second rotating shaft (15), the first rotating shaft (14) and the reciprocating screw (7) are fixedly sleeved with a first chain wheel (18), two first chain wheels (18) are sleeved with a first chain (19), and the two first chain wheels (18) are in driving connection through the first chain (19), the chain (19) runs through shell (1) and limiting plate (13), the outside fixed cover of heating cabinet (5) is equipped with ring gear (20), two (15) outside fixed covers of pivot are equipped with gear (21), gear (21) are located the bevel gear bottom, gear (21) inlay establish in ring gear (20) inside and with ring gear (20) mesh mutually.

4. The intelligent high-frequency steel surface welding preheating device according to claim 1, characterized in that: the three bottoms of cavity are connected with three (22) of pivot, three (22) tops of pivot extend to heating cabinet (5), the fixed cover in three (22) outsides of pivot is equipped with hybrid beam (23), a plurality of heating plate (24) of equal fixedly connected with of heating cabinet (5) both sides inner wall, two ventilation hole (25) have all been seted up to three tops of cavity and bottom, the fixed cover in three (22) outsides of pivot is equipped with fan (26), fan (26) are located three insides of cavity, the equal fixed cover in three (22) of pivot and two (15) outsides is equipped with sprocket two (27), two the sprocket two (27) outsides all is equipped with chain two (28), two drive connection through chain two (28) between sprocket two (27), two slider one (29) of fixedly connected with in heating cabinet (5) bottom, spout one has been seted up to shell (1) bottom inner wall, the first sliding block (29) is embedded in the first sliding groove and matched with the first sliding groove, and the third rotating shaft (22) is connected with the shell (1) and the fixed block (6) through a bearing.

5. The intelligent high-frequency steel surface welding preheating device according to claim 1, characterized in that: the fixing component comprises a connecting block (30), one side of the connecting block (30) is fixedly connected with a rotating block (31), one end of the rotating block (31) penetrates through a cavity and extends to the outside of one side of the shell (1), the rotating block (31) is connected with the shell (1) through a bearing, the other side of the connecting block (30) is provided with a groove, one end of the steel body (3) extends into the groove, the steel body (3) is contacted with the bottom of the groove, a clamping block (32) is arranged in the groove, the clamping block (32) is positioned at the top of the steel body (3) and is contacted with the steel body (3), the top of the connecting block (30) is provided with a cavity IV, the top of the clamping block (32) is fixedly connected with two threaded rods (33), and the top ends of the two threaded rods (33) penetrate through the cavity IV and extend to the outside of the top of the connecting block (30), the four bottoms of cavity are connected with four (34) of pivot, the four (34) tops of pivot extend to connecting block (30) top outside, four (34) of pivot are located two threaded rod (33) one side, four (34) of pivot pass through the bearing with connecting block (30) and are connected.

6. The intelligent high-frequency steel surface welding preheating device according to claim 5, characterized in that: the top of the clamping block (32) is fixedly connected with two springs (35), the top ends of the two springs (35) are fixedly connected to the top of the groove, the springs (35) are located on the outer sides of the two threaded rods (33), the outer portions of the two threaded rods (33) are sleeved with threaded blocks (36), the threaded blocks (36) are in threaded connection with the threaded rods (33), the threaded blocks (36) penetrate through the four cavities and extend into the groove, the threaded blocks (36) are connected with the connecting block (30) through bearings, two gears (37) are fixedly sleeved on the outer portions of the threaded blocks (36) and the outer portions of the rotating shaft (34), the gears (37) are linearly and uniformly distributed and are meshed with two adjacent gears (37), the top end of the rotating shaft (34) is fixedly connected with a knob (38), one side of the clamping block (32) is fixedly connected with a sliding block (39), a second sliding groove is formed in one side of the groove, and a second sliding block (39) is embedded in the second sliding groove and matched with the second sliding groove.

7. The intelligent high-frequency steel surface welding preheating device according to claim 5, characterized in that: an inside embedding of cavity is equipped with five (40) of pivot, five (40) of pivot are located rotatory piece (31) bottom, rotatory piece (31) outside fixed cover is equipped with ring gear two (41), five (40) outside fixed covers of pivot are equipped with gear three (42), gear three (42) inlay establish at ring gear two (41) inside and with ring gear two (41) mesh mutually, reciprocal lead screw (7) outside fixed cover is equipped with gear four (43), gear four (43) and gear three (42) mesh mutually, gear three (42) and gear four (43) gear ratio are four at least, five (40) of pivot are connected through the bearing with support (2).

8. The intelligent high-frequency steel surface welding preheating device according to claim 4, wherein: the first rotating shaft (14) is connected with the shell (1) through a bearing, and the second rotating shaft (15) is connected with the shell (1) through a bearing.

9. The intelligent high-frequency steel surface welding preheating device according to claim 1, characterized in that: the protection assembly comprises a protection shell (44), the protection shell (44) is fixedly connected to one side of the shell (1), the protection shell (44) is sleeved outside the motor (4), and a plurality of heat dissipation holes (45) are formed in the top and the bottom of the protection shell (44).

10. The intelligent high-frequency steel surface welding preheating device according to claim 1, characterized in that: the protection assembly comprises a protection shell (44), the protection shell (44) is fixedly connected to one side of the shell (1), the protection shell (44) is sleeved outside the motor (4), and the top and the bottom of the protection shell (44) are fixedly embedded with a heat dissipation net (46).

Technical Field

The invention relates to the field of preheating, in particular to an intelligent high-frequency steel surface welding preheating device.

Background

The steel industry is an industrial industry mainly engaged in industrial production activities such as ferrous metal mineral mining and selecting, ferrous metal smelting and processing and the like, and comprises mineral mining and selecting industries such as metallic iron, chromium, manganese and the like, iron making industry, steel processing industry, ferroalloy smelting industry, steel wire and product industry and other segmentation industries, and the steel industry is one of the national important raw material industries, and in addition, the steel needs to be preheated in advance when being welded.

The prior art has the following defects: the existing steel preheating device can not fully preheat steel when the steel is preheated, so that the steel needs to be preheated for the second time, the labor intensity of workers can be increased, and the welding quality of the steel can be influenced.

Therefore, the intelligent high-frequency steel surface welding preheating device is necessary to be invented.

Disclosure of Invention

Therefore, the invention provides an intelligent high-frequency steel surface welding preheating device, which solves the problems that steel cannot be fully preheated when being preheated, so that the steel needs to be preheated for the second time, the labor intensity of workers is increased, and the welding quality of the steel is influenced by the design of a preheating mechanism.

In order to achieve the above purpose, the invention provides the following technical scheme: the intelligent high-frequency steel surface welding preheating device comprises a shell, wherein the top of the shell is fixedly connected with two supports, a first cavity is formed in each of the two supports, a second cavity is formed in the bottom of the shell, steel bodies are arranged on the inner sides of the two supports, fixing assemblies are arranged on two sides of each of the steel bodies, and a preheating mechanism is arranged in the shell;

the preheating mechanism comprises a motor, the motor is fixedly connected with one side of the shell, a protection component is arranged outside the motor, the heating box is arranged in the shell, the top end of the heating box extends to the outer side of the top of the shell, the heating box is connected with the shell through a bearing, the inner wall of the bottom of the shell is fixedly connected with a fixed block, the top end of the fixed block extends into the heating box and is connected with the heating box through a bearing, the bottom of the fixed block and the bottom of the shell are provided with a cavity III, a reciprocating screw rod is arranged in one cavity I, one end of the reciprocating screw rod extends into the other cavity I, the reciprocating screw is positioned at the bottom of the steel body, a bearing seat is sleeved outside the reciprocating screw, the bearing seat is connected with the reciprocating screw through a ball nut pair, the reciprocating screw rod is connected with the support through a bearing, and two bases are fixedly connected to the bottom of the shell.

Preferably, bearing frame front side fixedly connected with nozzle, nozzle bottom fixedly connected with hose, hose bottom fixedly connected with connecting pipe, the connecting pipe bottom extends to the heating cabinet inside and passes through the bearing with the heating cabinet and be connected, bearing frame bottom fixedly connected with stopper, two the inboard fixedly connected with limiting plate of support, the limiting plate is located the bearing frame bottom, the spacing groove has been seted up at the limiting plate top, the stopper inlay establish at spacing inslot portion and with the spacing groove phase-match.

Preferably, the motor output shaft is fixedly connected with a first rotating shaft, one end of the rotating shaft extends into the shell, the inner wall of the top of the shell is connected with a second rotating shaft, the bottom end of the second rotating shaft extends into the cavity II, the second rotating shaft is positioned on one side of the first rotating shaft, one end of the rotating shaft is fixedly connected with a first bevel gear, one side of the first bevel gear is provided with a second bevel gear, the second bevel gear is meshed with the first bevel gear, the second bevel gear is fixedly sleeved outside the second rotating shaft, the first rotating shaft and the reciprocating screw are fixedly sleeved with a first chain wheel, the first two chain wheels are sleeved with a first chain wheel, the two first chain wheels are in driving connection through a first chain wheel, the first chain wheel penetrates through the shell and the limiting plate, the first gear ring is fixedly sleeved outside the heating box, the first rotating shaft is fixedly sleeved with a first gear, and the first gear is positioned at the bottom of the bevel gear, the first gear is embedded in the first gear ring and meshed with the first gear ring.

Preferably, three bottoms of cavity are connected with the pivot three, three tops of pivot extend to the heating cabinet, three outside fixed sheathes in of pivot are equipped with the hybrid beam, a plurality of heating plates of the equal fixedly connected with of heating cabinet both sides inner wall, two ventilation holes have all been seted up with the bottom at three tops of cavity, the fixed cover in three outsides of pivot is equipped with the fan, the fan is located three insides of cavity, three and two outside fixed sheathes in of pivot are equipped with sprocket two, two outside equal covers of sprocket are equipped with chain two, two drive connection through chain two between the sprocket two, two sliders of heating cabinet bottom fixedly connected with, spout one has been seted up to shell bottom inner wall, slider one inlays to establish in spout one inside and with spout one phase-match, pivot three passes through the bearing with shell and fixed block and is connected.

Preferably, the fixing component comprises a connecting block, one side of the connecting block is fixedly connected with a rotating block, one end of the rotating block penetrates through the cavity and extends to the outside of one side of the shell, the rotating block is connected with the shell through a bearing, the other side of the connecting block is provided with a groove, one end of the steel body extends into the groove, the steel body is contacted with the bottom of the groove, a clamping block is arranged in the groove, the clamping block is positioned at the top of the steel body and is contacted with the steel body, the top of the connecting block is provided with a cavity IV, the top of the clamping block is fixedly connected with two threaded rods, the top ends of the two threaded rods penetrate through the cavity IV and extend to the outer side of the top of the connecting block, the bottom of the cavity IV is connected with a rotating shaft IV, the top end of the rotating shaft IV extends to the outer side of the top of the connecting block, the four rotating shafts are located on one sides of the two threaded rods and connected with the connecting blocks through bearings.

Preferably, two springs of fixture block top fixedly connected with, two the equal fixed connection in spring top is at the recess top, two the spring is located two threaded rod outsides, two the threaded rod outside all is equipped with the screw thread piece, the screw thread piece passes through threaded connection with the threaded rod, two the screw thread piece all runs through the cavity four and extends to inside the recess, the screw thread piece passes through the bearing with the connecting block and is connected, two the outside equal fixed cover of screw thread piece and four outsides of pivot is equipped with gear two, and is three gear two is straight line shape evenly distributed and two adjacent gear two-phase meshing, four top fixedly connected with knobs of pivot, fixture block one side fixedly connected with slider two, spout two have been seted up to recess one side, slider two inlays to be established inside spout two and to match with spout two.

Preferably, an inside embedding of cavity is equipped with pivot five, pivot five is located rotatory piece bottom, the outside fixed cover of rotatory piece is equipped with ring gear two, the five outside fixed covers of pivot are equipped with gear three, gear three inlays to be established in ring gear two inside and with ring gear two-phase meshing, reciprocal lead screw outside fixed cover is equipped with gear four, gear four and gear three-phase meshing, gear three is four with gear four gear ratio at least, pivot five passes through the bearing with the support and is connected.

Preferably, the first rotating shaft is connected with the shell through a bearing, and the second rotating shaft is connected with the shell through a bearing.

Preferably, the protection assembly comprises a protection shell, the protection shell is fixedly connected to one side of the shell, the protection shell is sleeved outside the motor, and a plurality of heat dissipation holes are formed in the top and the bottom of the protection shell.

Preferably, the protection assembly comprises a protection shell, the protection shell is fixedly connected to one side of the shell, the protection shell is sleeved outside the motor, and the top and the bottom of the protection shell are fixedly embedded with a heat dissipation net.

The invention has the beneficial effects that:

1. the invention can generate suction force through the rotation of the fan so as to enable the air to enter the heating box, thus the air can be heated to reach the temperature for preheating steel, and the air can be uniformly heated through the rotation of the heating box, thus the phenomenon of insufficient air heating can not occur, the rotation of the rotating shaft III can drive the mixing rod to rotate, and the rotation direction of the mixing rod is opposite to that of the heating box, thus the efficiency of heating the air can be improved, and the air can be uniformly heated;

2. the invention can make the bearing seat move continuously by the rotation of the reciprocating screw rod, the bearing seat moves continuously to drive the nozzle to move, thus heated air can be blown to the surface of the steel body uniformly, the surface of the steel body can be heated uniformly, the steel body can be preheated uniformly, the rotating block can also rotate when the reciprocating screw rod rotates, the steel body can rotate by the rotation of the rotating block, and the gear ratio of the gear three to the gear four is at least four, thus the rotating speed of the steel body can be slowed down, and the steel body can be heated uniformly when being preheated.

3. According to the invention, the steel body can be fixed when being preheated through the design of the fixing component, so that the steel body does not need to be fixed manually when being preheated, manual scalding caused by overhigh temperature of the steel body can be avoided when being preheated, and manual safety can be effectively protected.

Drawings

FIG. 1 is a schematic view of the overall structure provided by the present invention;

FIG. 2 is a front view cross-section view provided by the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the invention at B of FIG. 2;

FIG. 5 is an enlarged view at C of FIG. 2 according to the present invention;

FIG. 6 is a perspective view of a second ring gear and a rotating block provided in the present invention;

FIG. 7 is a schematic view of the overall structure of embodiment 2 of the present invention;

in the figure: the device comprises a shell 1, a bracket 2, a steel body 3, a motor 4, a heating box 5, a fixing block 6, a reciprocating lead screw 7, a bearing seat 8, a nozzle 9, a hose 10, a connecting pipe 11, a limiting block 12, a limiting plate 13, a rotating shaft I14, a rotating shaft II 15, a bevel gear I16, a bevel gear II 17, a sprocket I18, a chain I19, a ring gear I20, a gear I21, a rotating shaft III 22, a mixing rod 23, a heating plate 24, a ventilation hole 25, a fan 26, a sprocket II 27, a chain II 28, a slider I29, a connecting block 30, a rotating block 31, a fixture block 32, a threaded rod 33, a rotating shaft IV 34, a spring 35, a thread block 36, a gear II 37, a knob 38, a slider II, a rotating shaft V40, a ring gear II 41, a gear III 42, a gear IV 43, a gear 44, a heat dissipation hole 45, a heat dissipation net 46 and a base 47.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Embodiment 1, referring to fig. 1 to 6, the intelligent high-frequency steel surface welding preheating device provided by the invention comprises a shell 1, wherein the top of the shell 1 is fixedly connected with two brackets 2, a first cavity is formed inside each of the two brackets 2, a second cavity is formed at the bottom of the shell 1, steel bodies 3 are arranged on the inner sides of the two brackets 2, fixing assemblies are arranged on two sides of each of the steel bodies 3, and a preheating mechanism is arranged inside the shell 1;

the preheating mechanism comprises a motor 4, the motor 4 is fixedly connected to one side of a shell 1, a protection assembly is arranged outside the motor 4, a heating box 5 is arranged inside the shell 1, the top end of the heating box 5 extends to the outer side of the top of the shell 1, the heating box 5 is connected with the shell 1 through a bearing, a fixed block 6 is fixedly connected to the inner wall of the bottom of the shell 1, the top end of the fixed block 6 extends into the heating box 5 and is connected with the heating box 5 through a bearing, the bottom of the fixed block 6 and the bottom of the shell 1 are provided with three cavities, one of the three cavities is internally provided with a reciprocating lead screw 7, one end of the reciprocating lead screw 7 extends into the other cavity, the reciprocating lead screw 7 is positioned at the bottom of a steel body 3, a bearing seat 8 is sleeved outside the reciprocating lead screw 7, and the bearing seat 8 is connected with the reciprocating lead screw 7 through a ball nut pair, the reciprocating screw 7 is connected with the support 2 through a bearing, and two bases 47 are fixedly connected to the bottom of the shell 1.

Further, a nozzle 9 is fixedly connected to the front side of the bearing seat 8, a hose 10 is fixedly connected to the bottom of the nozzle 9, a connecting pipe 11 is fixedly connected to the bottom end of the hose 10, the bottom end of the connecting pipe 11 extends into the heating box 5 and is connected with the heating box 5 through a bearing, a limiting block 12 is fixedly connected to the bottom of the bearing seat 8, limiting plates 13 are fixedly connected to the inner sides of the two brackets 2, the limiting plates 13 are located at the bottom of the bearing seat 8, a limiting groove is formed in the top of each limiting plate 13, each limiting block 12 is embedded in each limiting groove and matched with the corresponding limiting groove, and each limiting block 12 can enable the bearing seat 8 to be more stable when moving;

further, the output shaft of the motor 4 is fixedly connected with a first rotating shaft 14, one end of the first rotating shaft 14 extends into the shell 1, the inner wall of the top of the shell 1 is connected with a second rotating shaft 15, the bottom end of the second rotating shaft 15 extends into the second cavity, the second rotating shaft 15 is positioned on one side of the first rotating shaft 14, one end of the first rotating shaft 14 is fixedly connected with a first bevel gear 16, one side of the first bevel gear 16 is provided with a second bevel gear 17, the second bevel gear 17 is meshed with the first bevel gear 16, the second bevel gear 17 is fixedly sleeved outside the second rotating shaft 15, the first rotating shaft 14 and the reciprocating screw 7 are both fixedly sleeved with a first chain wheel 18, a first chain 19 is sleeved outside the two first chain wheels 18, the two first chain wheels 18 are in driving connection through the first chain 19, the first chain 19 penetrates through the shell 1 and the limiting plate 13, and a first gear ring 20 is fixedly sleeved outside the heating box 5, the first gear 21 is fixedly sleeved outside the second rotating shaft 15, the first gear 21 is positioned at the bottom of the bevel gear, the first gear 21 is embedded inside the first gear ring 20 and meshed with the first gear ring 20, and the heating box 5 can rotate through the first gear 21;

further, three bottoms of cavity are connected with three rotating shafts 22, the top of three rotating shafts 22 extends to heating cabinet 5, the fixed cover in the three rotating shafts 22 is equipped with mixing rod 23, the inner walls of two sides of heating cabinet 5 are fixedly connected with a plurality of heating sheets 24, two ventilation holes 25 are opened on the top and bottom of the cavity, fan 26 is fixed on the three rotating shafts 22, fan 26 is located in the three cavities, two chain wheels 27 are fixedly sleeved on the three rotating shafts 22 and two rotating shafts 15, two chains 28 are sleeved on the two chain wheels 27, two chain wheels 27 are in driving connection through two chains 28, two first sliding blocks 29 are fixedly connected to the bottom of heating cabinet 5, first sliding grooves are opened on the inner wall of the bottom of casing 1, first sliding blocks 29 are embedded in the first sliding grooves and matched with the first sliding grooves, three rotating shafts 22 are connected with casing 1 and fixed blocks 6 through bearings, the first slide block 29 can make the heating box 5 more stable in rotation;

further, the fixing component comprises a connecting block 30, one side of the connecting block 30 is fixedly connected with a rotating block 31, one end of the rotating block 31 penetrates through the cavity and extends to the outside of one side of the shell 1, the rotating block 31 is connected with the shell 1 through a bearing, the other side of the connecting block 30 is provided with a groove, one end of the steel body 3 extends to the inside of the groove, the steel body 3 is contacted with the bottom of the groove, a clamping block 32 is arranged inside the groove, the clamping block 32 is positioned at the top of the steel body 3 and is contacted with the steel body 3, the top of the connecting block 30 is provided with a cavity four, the top of the clamping block 32 is fixedly connected with two threaded rods 33, the top ends of the two threaded rods 33 penetrate through the cavity four and extend to the outside of the top of the connecting block 30, the bottom of the cavity four is connected with a rotating shaft 34, and the top end of the rotating shaft 34 extends to the outside of the top of the connecting block 30, the fourth rotating shaft 34 is positioned on one side of the two threaded rods 33, the fourth rotating shaft 34 is connected with the connecting block 30 through a bearing, and abrasion can be reduced through the bearing connection;

furthermore, the top of the clamping block 32 is fixedly connected with two springs 35, the top ends of the two springs 35 are fixedly connected to the top of the groove, the two springs 35 are located outside the two threaded rods 33, the outer portions of the two threaded rods 33 are respectively sleeved with a threaded block 36, the threaded blocks 36 are in threaded connection with the threaded rods 33, the two threaded blocks 36 penetrate through the cavity IV and extend into the groove, the threaded blocks 36 are connected with the connecting block 30 through bearings, the outer portions of the two threaded blocks 36 and the outer portion of the rotating shaft IV 34 are respectively fixedly sleeved with a gear II 37, the three gear II 37 are linearly and uniformly distributed and are meshed with two adjacent gear II 37, the top end of the rotating shaft IV 34 is fixedly connected with a knob 38, one side of the clamping block 32 is fixedly connected with a sliding block II 39, one side of the groove II is provided with a sliding groove II, and the sliding block II 39 is embedded in the sliding groove II and matched with the sliding groove II, the second sliding block 39 can enable the second clamping block 32 to be more stable in moving;

further, a rotating shaft five 40 is embedded in the cavity one, the rotating shaft five 40 is located at the bottom of the rotating block 31, a gear ring two 41 is fixedly sleeved outside the rotating block 31, a gear three 42 is fixedly sleeved outside the rotating shaft five 40, the gear three 42 is embedded inside the gear ring two 41 and is meshed with the gear ring two 41, a gear four 43 is fixedly sleeved outside the reciprocating screw 7, the gear four 43 is meshed with the gear three 42, the gear ratio of the gear three 42 to the gear four 43 is at least four, the rotating shaft five 40 is connected with the support 2 through a bearing, and the gear ratio of the gear three 42 to the gear four 43 is at least four, so that the rotating speed of the steel body 3 is slowed down, and the steel body 3 can be heated uniformly during preheating;

furthermore, the first rotating shaft 14 is connected with the shell 1 through a bearing, the second rotating shaft 15 is connected with the shell 1 through a bearing, and the abrasion can be reduced through the bearing connection;

further, the protection assembly comprises a protection shell 44, the protection shell 44 is fixedly connected to one side of the shell 1, the protection shell 44 is sleeved outside the motor 4, a plurality of heat dissipation holes 45 are formed in the top and the bottom of the protection shell 44, and heat generated during operation of the motor 4 can be discharged through the heat dissipation holes 45.

The using process of the invention is as follows: when the preheating device is used, the rotary knob 38 is rotated to rotate the rotary shaft four 34, the rotary shaft four 34 rotates to drive one of the two gears 37 to rotate, the three gears 37 are meshed with each other, so that the three gears 37 can be simultaneously rotated by rotating the rotary knob 38, the two thread blocks 36 can be rotated, the threaded rod 33 can be moved by rotating the two thread blocks 36, the fixing block 6 can be pulled, the spring 35 can be compressed, one end of the steel body 3 is placed in the groove, the steel body 3 can be fixed by loosening the spring 35 of the rotary knob 38 to rebound, the steel body 3 does not need to be fixed manually during preheating, manual scalding caused by overhigh temperature of the steel body 3 is avoided during preheating, the motor 4 is started, the motor 4 operates to drive the rotary shaft one 14 to rotate, the rotary shaft one 14 drives the bevel gear one 16 to rotate, the bevel gear I16 rotates to drive the bevel gear II 17 to rotate, the bevel gear II 17 rotates to drive the rotating shaft II 15 to rotate, the rotating shaft II 15 rotates to drive the left chain wheel II 27 to rotate, the left chain wheel II 27 rotates to drive the right chain wheel II 27 to rotate, the right chain wheel II 27 rotates to drive the rotating shaft III 22 to rotate, the rotating shaft III 22 rotates to drive the fan 26 to rotate, the fan 26 rotates to generate suction force to enable air to enter the heating box 5, so that the air can be heated, the air reaches the temperature capable of preheating steel, the rotating shaft II 15 rotates to drive the gear I21 to rotate, the gear I21 rotates to enable the heating box 5 to rotate, the heating box 5 rotates to enable the air to be uniformly heated, the phenomenon of insufficient air heating cannot occur, the rotating shaft III 22 rotates to drive the mixing rod 23 to rotate, and the rotating direction of the mixing rod 23 is opposite to the rotating direction of the heating box 5, therefore, the efficiency of heating air can be improved, the air can be uniformly heated, the heated air is sprayed out from the nozzle 9, the first rotating shaft 14 rotates to drive the first chain wheel 18 below to rotate, the first chain wheel 18 below rotates to drive the first chain wheel 18 above to rotate, the first chain wheel 18 above rotates to drive the reciprocating screw 7 to rotate, the reciprocating screw 7 rotates to enable the bearing seat 8 to continuously move, the bearing seat 8 continuously moves to drive the nozzle 9 to move, the heated air can be uniformly blown to the surface of the steel body 3, the surface of the steel body 3 can be uniformly heated, the reciprocating screw 7 rotates to drive the fourth gear 43 to rotate, the fourth gear 43 rotates to drive the third gear 42 to rotate, the third gear 42 rotates to enable the rotating block 31 to rotate, the rotating block 31 rotates to enable the steel body 3 to rotate, and the gear ratio of the third gear 42 to the fourth gear 43 is at least four, thus, the rotating speed of the steel body 3 can be slowed down, and the steel body 3 can be heated uniformly during preheating.

Embodiment 2, referring to fig. 7, the intelligent high-frequency steel surface welding preheating device provided by the invention is different from embodiment 1 in that the protection assembly comprises a protection shell 44, the protection shell 44 is fixedly connected to one side of the shell 1, the protection shell 44 is sleeved outside the motor 4, and heat dissipation nets 46 are fixedly embedded at the top and the bottom of the protection shell 44.

The using process of the invention is as follows: the motor 4 is started, the motor 4 works to drive the first rotating shaft 14 to rotate, the first rotating shaft 14 rotates to drive the first bevel gear 16 to rotate, the first bevel gear 16 rotates to drive the second bevel gear 17 to rotate, the second bevel gear 17 rotates to drive the second rotating shaft 15 to rotate, the second rotating shaft 15 rotates to drive the second left chain wheel 27 to rotate, the second left chain wheel 27 rotates to drive the second right chain wheel 27 to rotate, the second right chain wheel 27 rotates to drive the third rotating shaft 22 to rotate, the third rotating shaft 22 rotates to drive the fan 26 to rotate, the fan 26 rotates to generate suction force to enable air to enter the heating box 5, and therefore the air can be heated, the air reaches the temperature capable of preheating steel, and heat generated by the motor 4 in working can be discharged through the radiating net 46.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.