阅读说明：本技术 一种建筑钢管拼接的连接头 (Connector for splicing building steel pipes ) 是由 胡瑞阳 于 2021-01-11 设计创作，主要内容包括：本发明公开的一种建筑钢管拼接的连接头,包括主体,所述主体内设置有环绕所述主体圆心中轴线且与外界连通呈圆环状的打磨腔,所述打磨腔内设置有打磨装置,所述打磨装置包括转动设置于所述打磨腔内呈圆环状且圆心与所述打磨腔圆心重合的打磨转动块,所述打磨转动块内设置有关于所述打磨转动块中心轴线上下对称且与所述打磨腔连通的打磨腔,该发明能够先将直径较大的钢管内壁进行打磨并进行固定夹紧处理,从而防止接头在与钢管连接时发生滑脱的危险,同时能够将直径较小的钢管通过气压作用与接头连接,从而达到两个不同直径钢管的连接,同时能够在较短时间内完成对钢管的分离,从而提高了钢管的连接和分离效率。(The invention discloses a connector for splicing construction steel pipes, which comprises a main body, wherein a polishing cavity which surrounds the central axis of the circle center of the main body and is communicated with the outside in a circular ring shape is arranged in the main body, a polishing device is arranged in the polishing cavity, the polishing device comprises a polishing rotating block which is arranged in the polishing cavity in a circular ring shape in a rotating way and the circle center of the polishing rotating block is superposed with the circle center of the polishing cavity, and a polishing cavity which is up-and-down symmetrical relative to the central axis of the polishing rotating block and is communicated with the polishing cavity is arranged in the polishing rotating block. Thereby improving the efficiency of connection and separation of the steel pipes.)

1. The utility model provides a connector of building steel pipe concatenation, includes the main part, its characterized in that: the polishing device comprises a polishing rotating block which is rotatably arranged in the polishing cavity and is in a circular ring shape, the center of the circle of the polishing rotating block is coincided with the center of the polishing cavity, a polishing cavity which is vertically symmetrical relative to the central axis of the polishing rotating block and is communicated with the polishing cavity is arranged in the polishing rotating block, a polishing driving cavity is arranged at the left side of the polishing cavity, a rotating cavity with an opening facing left is arranged at one side of the polishing driving cavity, which is close to the central axis of the polishing rotating block, a polishing shaft with a left side extending into the polishing driving cavity is rotatably arranged between the left end wall and the right end wall of the polishing cavity, a polishing wheel with a part extending into the polishing cavity is fixed on the polishing shaft, and a power cavity is communicated with one side of the polishing cavity, which is close to the central axis of the main body center, the left side of the power cavity is provided with a transmission cavity, the right side of the power cavity at the upper side is provided with a middle cavity, the lower side of the middle cavity is provided with a connecting cavity, the lower side of the connecting cavity is provided with a gear cavity, the right side of the grinding cavity is provided with a limiting cavity communicated with the outside, the limiting cavity is internally provided with a limiting device, the right side of the limiting cavity is communicated with a sliding cavity, the right side of the limiting cavity is provided with a clamping cavity, the clamping cavity is internally provided with a clamping device, one side of the clamping cavity, which is close to the central axis of the circle center of the main body, is provided with a rotary drum cavity communicated with the sliding cavity, the right side of the clamping cavity at the upper side is provided with an air pressure cavity with an upward opening, the right side of the rotary drum cavity is provided with an elastic cavity communicated with the, and the right end wall of the elastic cavity is communicated with an exhaust cavity with an opening facing right.

2. The joint for splicing the construction steel pipes as claimed in claim 1, wherein: the polishing device comprises an output shaft which is rotatably arranged in the end wall of one side of the central axis of the polishing rotating block, one side of the output shaft, which is far away from the central axis of the polishing rotating block, is connected with the left side of the polishing shaft through a pair of bevel gear pairs, one end of the output shaft, which is near to the polishing rotating block, is connected with a transmission which is fixed between the polishing driving chamber and the rotating chamber and can adjust the rotating speed, a rotating shaft is rotatably arranged between the upper end wall and the lower end wall of the rotating chamber, one side of the rotating shaft, which is far away from the central axis of the polishing rotating block, is connected with the transmission, an annular polishing gear ring is fixedly arranged on the inner circular ring surface of the polishing rotating block, a power shaft, the left side of which extends into the transmission chamber, is rotatably arranged between the left end wall and the right end wall of the power chamber, and a power gear, the right side of the power shaft on the upper side extends into the middle cavity, and the left sides of the two symmetrical power shafts are connected through a group of belt pulleys.

3. The joint for splicing the construction steel pipes as claimed in claim 2, wherein: grinding device still including rotate set up in under the middle chamber terminal wall and downside extend to connect the intermittent type axle in the intracavity, the lower terminal wall of connecting the chamber rotates and is provided with intermittent type piece, be provided with opening intermittent type chamber up in the intermittent type piece, the downside of intermittent type axle extends to the intermittent type intracavity and with the lower terminal wall in intermittent type chamber rotates and is connected, the inboard end wall in intermittent type chamber is fixed with the fixture block, the epaxial splined connection of intermittent type slide set up in the intermittent type intracavity and can pivoted intermittent type board, the intermittent type board can with the fixture block cooperation is connected, it has the downside in to connect intracavity threaded connection the intermittent type board rotate connect and with intermittent type axle splined connection's intermittent type thread piece, the lower terminal surface of intermittent type piece is fixed with the downside and extends to gear intracavity and can the pivoted jackshaft.

4. The joint for splicing the construction steel pipes as claimed in claim 1, wherein: the limiting device comprises a limiting drill bit which is arranged in the limiting cavity in a sliding mode and can rotate, one side, close to the central axis of the main body, of the limiting drill bit is rotatably provided with a limiting rotating plate, the limiting rotating plate is close to one side end face of the central axis of the main body and is fixedly connected with a limiting spring between the end wall of one side, close to the central axis of the main body, of the limiting cavity, a motor shaft is rotatably arranged between the right side of the upper end wall and the right side of the lower end wall of the gear cavity, the upper side and the lower side of the upper end wall of the gear cavity are both extended into the limiting cavity and are in splined connection with the limiting drill bit, a main motor is arranged on the upper end wall of the gear cavity and is in power connection with the motor shaft, the part, located in the gear cavity, upside the lower endwall in rotary drum chamber rotates and is provided with the downside and passes gear chamber and extend to the downside pivot in the rotary drum intracavity, be fixed with in the pivot and be located rotary drum in the rotary drum intracavity, the left end wall in rotary drum chamber slides and is provided with the part and extends to slide the intracavity and with sliding block fixed connection's slide bar, the slide bar is close to one side of main part the central axis is fixed with the guide arm, the outside terminal surface of rotary drum be provided with guide arm right side sliding connection's ring form recess, the pivot is located part in the gear intracavity pass through a pair of straight-tooth cylindrical gear pair with the motor shaft is connected.

5. The joint for splicing the construction steel pipes as claimed in claim 1, wherein: the clamping device comprises a clamping block which is arranged in the clamping cavity in a sliding mode, a friction pad is fixed on the end face, away from the central axis of the main body, of one side of the clamping block, and the upper side and the lower side of the rotating shaft respectively extend into the clamping cavity and are connected with the clamping block through splines.

6. The joint for splicing the construction steel pipes as claimed in claim 1, wherein: the connecting device comprises an elastic block which is arranged in the elastic cavity in a sliding manner, the gas at the joint of the elastic block and the elastic cavity can not pass through, an elastic spring is fixedly connected between one side end face of the elastic block close to the central axis of the main body and one side end wall of the elastic cavity close to the central axis of the main body, a pressure rod is arranged in the pressure cavity in a sliding manner, the gas at the joint of the pressure rod and the pressure cavity can not pass through, a pressure spring is fixedly connected between the left end face of the pressure rod and the left end wall of the pressure cavity, a vent pipe communicated with the elastic cavity is arranged on the left end wall of the pressure spring in a communicating manner, a sealing cavity is arranged on one side end wall of the exhaust cavity close to the central axis of the main body in a communicating manner, a sealing plate capable of sealing the opening of the exhaust cavity is arranged in the sealing, the sealing plate is close to one side end face of the central axis of the main body and the sealing cavity is close to a sealing spring fixedly connected between end walls of one side of the central axis of the main body, an air pressure block is arranged in the air pressure cavity in a sliding mode, air at the joint of the air pressure block and the air pressure cavity cannot pass through the air pressure block, and a sealing pipe communicated with the sealing cavity is communicated with the lower end wall of the air pressure cavity.

Technical Field

The invention relates to the field of building steel pipes, in particular to a connector for splicing building steel pipes.

Background

In the process of building construction, two steel pipes with different diameters are connected together, and the steel pipes are connected by using a connecting frame or a welding mode, but the connecting frame or the welding mode is high in operation difficulty in several modes, a professional is required to perform connecting operation, the connecting time is long, and the welding mode is not easy to perform subsequent dismantling treatment.

Disclosure of Invention

In order to solve the problems, the connector for splicing the building steel pipes is designed in the embodiment, the connector for splicing the building steel pipes comprises a main body, a polishing cavity which surrounds the central axis of the center of the main body and is in a circular ring shape and is communicated with the outside is arranged in the main body, a polishing device is arranged in the polishing cavity and comprises a polishing rotating block which is rotatably arranged in the polishing cavity and is in a circular ring shape, the center of the polishing rotating block is coincided with the center of the polishing cavity, a polishing cavity which is vertically symmetrical relative to the central axis of the polishing rotating block and is communicated with the polishing cavity is arranged in the polishing rotating block, a polishing driving cavity is arranged on the left side of the polishing cavity, a rotating cavity with an opening facing left is arranged on one side of the polishing rotating cavity, which is close to the central axis of the polishing rotating block, a polishing shaft extending from the left side to the polishing, a grinding wheel with a part extending into the grinding cavity is fixed on the grinding shaft, one side of the grinding cavity close to the central axis of the circle center of the main body is communicated with a power cavity, the left side of the power cavity is provided with a transmission cavity, the right side of the power cavity at the upper side is provided with a middle cavity, the lower side of the middle cavity is provided with a connecting cavity, the lower side of the connecting cavity is provided with a gear cavity, the right side of the grinding cavity is provided with a limiting cavity communicated with the outside, the limiting cavity is internally provided with a limiting device, the right side of the limiting cavity is communicated with a sliding cavity, the right side of the limiting cavity is provided with a clamping cavity, the clamping cavity is internally provided with a clamping device, the side of the clamping cavity close to the central axis of the circle center of the main body is provided with a rotary drum cavity communicated with the sliding cavity, the right side of the clamping cavity at the upper side is provided, the elastic cavity is internally provided with a connecting device, the left side of the elastic cavity is provided with a pressure cavity with an opening facing right, and the right end wall of the elastic cavity is communicated with an exhaust cavity with an opening facing right.

Preferably, the grinding device is including rotating set up in polish the drive chamber be close to polish the output shaft in the rotor block the central axis one side end wall, the output shaft is kept away from polish one side of rotor block the central axis with the left side of polishing the axle is through a pair of bevel gear pair connection, the output shaft is close to the one end of polishing the rotor block is connected with to be fixed polish the drive chamber with rotate between the chamber and can adjust the derailleur of rotational speed, it is provided with the axis of rotation to rotate between the upper end wall in rotation chamber and the lower extreme wall, the axis of rotation is kept away from polish one side of rotor block the central axis with the derailleur is connected, the inboard torus fixed mounting of polishing the rotor block has and is annular ring gear of polishing, it extends to rotate between the left end wall in power chamber and the right-hand member wall to be provided with the left side power shaft in the transmission intracavity, be fixed with the part on the power shaft The right side of the power shaft on the upper side extends into the middle cavity, and the left sides of the two symmetrical power shafts are connected through a group of belt pulleys.

But preferably, grinding device still including rotate set up in middle chamber lower extreme wall and downside extend to connect the intermittent type axle in the intracavity, the lower extreme wall of connecting the chamber rotates and is provided with intermittent type piece, be provided with opening intermittent type chamber up in the intermittent type piece, the downside of intermittent type axle extends to the intermittent type intracavity and with the lower extreme wall in intermittent type chamber rotates and is connected, the inboard end wall in intermittent type chamber is fixed with the fixture block, the epaxial splined connection of intermittent type have slide set up in the intermittent type intracavity and can pivoted intermittent type board, the intermittent type board can with the fixture block cooperation is connected, it has the downside in to connect intracavity threaded connection in the intermittent type board rotate connect and with intermittent type axle splined connection's intermittent type thread piece, the lower terminal surface of intermittent type piece is fixed with the downside extend to gear intracavity and can the pivoted jackshaft.

Preferably, the limiting device comprises a limiting drill bit which is arranged in the limiting cavity in a sliding mode and can rotate, one side of the limiting drill bit, which is close to the central axis of the main body, is rotated to be provided with a limiting rotating plate, the limiting rotating plate is close to one side end face of the central axis of the main body and is close to one side end wall of the central axis of the main body, a limiting spring is fixedly connected between the right side of the upper end wall and the right side of the lower end wall of the central axis of the main body, a motor shaft is rotatably arranged between the right side of the upper end wall and the right side of the lower end wall of the gear cavity, the upper end wall of the gear cavity is provided with a main motor which is in power connection with the motor shaft, the part of the motor shaft, which is positioned in the gear cavity, is connected with the lower side of, upside the lower endwall in rotary drum chamber rotates and is provided with the downside and passes gear chamber and extend to the downside pivot in the rotary drum intracavity, be fixed with in the pivot and be located rotary drum in the rotary drum intracavity, the left end wall in rotary drum chamber slides and is provided with the part and extends to slide the intracavity and with sliding block fixed connection's slide bar, the slide bar is close to one side of main part the central axis is fixed with the guide arm, the outside terminal surface of rotary drum be provided with guide arm right side sliding connection's ring form recess, the pivot is located part in the gear intracavity pass through a pair of straight-tooth cylindrical gear pair with the motor shaft is connected.

Preferably, the clamping device comprises a clamping block which is arranged in the clamping cavity in a sliding mode, a friction pad is fixed on the end face of one side, away from the central axis of the main body, of the clamping block, and the upper side and the lower side of the rotating shaft respectively extend into the clamping cavity and are in splined connection with the clamping block.

Preferably, the connecting device comprises an elastic block arranged in the elastic cavity in a sliding manner, gas at the joint of the elastic block and the elastic cavity cannot pass through, an elastic spring is fixedly connected between the end surface of one side, close to the central axis of the main body, of the elastic block and the end wall of one side, close to the central axis of the main body, of the elastic cavity, a pressure rod is arranged in the pressure cavity in a sliding manner, gas at the joint of the pressure rod and the pressure cavity cannot pass through, a pressure spring is fixedly connected between the left end surface of the pressure rod and the left end wall of the pressure cavity, a vent pipe communicated with the elastic cavity is arranged on the left end wall of the pressure spring in a communicating manner, a sealing cavity is arranged on the end wall of one side, close to the central axis of the main body, of the exhaust cavity, and a sealing plate, the sealing plate and the junction gas in sealed chamber can't pass through, the sealing plate is close to one side terminal surface of main part the central axis with sealed chamber is close to fixedly connected with sealing spring between one side end wall of main part the central axis, the atmospheric pressure intracavity slides and is provided with the atmospheric pressure piece, the atmospheric pressure piece with the junction gas in atmospheric pressure chamber can't pass through, the lower terminal wall intercommunication in atmospheric pressure chamber be provided with the sealed pipe that communicates in sealed chamber.

The invention has the beneficial effects that: the steel pipe connecting and separating device can be completed without operation of professionals, the inner wall of a steel pipe with a larger diameter can be polished and fixed and clamped, so that the risk of slipping of a connector when the connector is connected with the steel pipe is avoided, meanwhile, the steel pipe with a smaller diameter can be connected with the connector through the air pressure effect, so that the connection of the two steel pipes with different diameters is achieved, meanwhile, the steel pipes can be separated in a short time, and the connection and separation efficiency of the steel pipes is improved.

Drawings

In order to more clearly illustrate the embodiments of the 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, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of a joint for splicing construction steel pipes according to the present invention;

FIG. 2 is an enlarged structural view taken at A in FIG. 1;

fig. 3 is a schematic view of the structure in the direction B in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-3, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a connector for splicing construction steel pipes, which comprises a main body 10, wherein a polishing cavity 27 which surrounds the central axis of the center of the circle of the main body 10 and is communicated with the outside in a circular ring shape is arranged in the main body 10, a polishing device is arranged in the polishing cavity 27, the polishing device comprises a polishing rotating block 64 which is arranged in the polishing cavity 27 in a circular ring shape in a rotating way and has the center of the circle coinciding with the center of the circle of the polishing cavity 27, a polishing cavity 61 which is vertically symmetrical about the central axis of the polishing rotating block 64 and is communicated with the polishing cavity 27 is arranged in the polishing rotating block 64, a polishing driving cavity 60 is arranged on the left side of the polishing cavity 61, a rotating cavity 55 with an opening facing to the left is arranged on one side of the polishing driving cavity 60 close to the central axis of the polishing rotating block 64, a polishing shaft 63 with a left side extending into the polishing driving cavity 60 is arranged between, a grinding wheel 62 partially extending into the grinding cavity 27 is fixed on the grinding shaft 63, a power cavity 24 is communicated with one side of the grinding cavity 27 close to the central axis of the center of the circle of the main body 10, a transmission cavity 23 is arranged on the left side of the power cavity 24, a middle cavity 29 is arranged on the right side of the power cavity 24 on the upper side, a connecting cavity 22 is arranged on the lower side of the middle cavity 29, a gear cavity 17 is arranged on the lower side of the connecting cavity 22, a limiting cavity 31 communicated with the outside is arranged on the right side of the grinding cavity 27, a limiting device is arranged in the limiting cavity 31, a sliding cavity 33 is communicated with the right side of the limiting cavity 31, a clamping cavity 35 is arranged on the right side of the limiting cavity 31, a clamping device is arranged in the clamping cavity 35, and a drum cavity 16 communicated with the sliding cavity 33 is arranged on one side of the clamping cavity 35 close to the central, the right side of the clamping cavity 35 on the upper side is provided with an air pressure cavity 37 with an upward opening, the right side of the rotary drum cavity 16 is provided with an elastic cavity 44 communicated with the outside, a connecting device is arranged in the elastic cavity 44, the left side of the elastic cavity 44 is provided with a pressure cavity 40 with an opening facing the right, and the right end wall of the elastic cavity 44 is communicated with an exhaust cavity 46 with an opening facing the right.

Advantageously, the grinding device comprises an output shaft 59 rotatably disposed in an end wall of the grinding driving cavity 60 on one side close to the central axis of the grinding rotating block 64, one side of the output shaft 59 far from the central axis of the grinding rotating block 64 is connected with the left side of the grinding shaft 63 through a pair of bevel gear pairs, one end of the output shaft 59 close to the grinding rotating block 64 is connected with a transmission 58 which is fixed between the grinding driving cavity 60 and the rotating cavity 55 and can adjust the rotating speed, a rotating shaft 57 is rotatably disposed between an upper end wall and a lower end wall of the rotating cavity 55, one side of the rotating shaft 57 far from the central axis of the grinding rotating block 64 is connected with the transmission 58, a grinding gear ring 54 in an annular shape is fixedly mounted on an inner annular surface of the grinding rotating block 64, and a power shaft 25 extending from the left side into the transmission cavity 23 is rotatably disposed between a left end wall and a right end wall, a power gear 26 partially extending into the grinding cavity 27 and meshed with the grinding gear ring 54 is fixed on the power shaft 25, the right side of the upper power shaft 25 extends into the middle cavity 29, and the left sides of the two symmetrical power shafts 25 are connected through a group of belt pulleys.

Advantageously, the grinding device further comprises a intermittent shaft 28 rotatably arranged on the lower end wall of the intermediate chamber 29 and extending from the lower side into the connecting chamber 22, the lower end wall of the connecting cavity 22 is rotatably provided with an intermittent block 20, an intermittent cavity 18 with an upward opening is arranged in the intermittent block 20, the lower side of the intermittent shaft 28 extends into the intermittent chamber 18 and is rotatably connected with the lower end wall of the intermittent chamber 18, a clamping block 19 is fixed on the inner side end wall of the intermittent cavity 18, an intermittent plate 21 which is arranged in the intermittent cavity 18 in a sliding mode and can rotate is connected to the intermittent shaft 28 in a spline mode, the intermittent plate 21 can be matched and connected with the clamping block 19, the connecting cavity 22 is internally threaded with an intermittent thread block 49 which is rotatably connected with the intermittent plate 21 at the lower side and is in spline connection with the intermittent shaft 28, an intermediate shaft 65 is fixed to the lower end surface of the intermittent block 20, and extends into the gear cavity 17 from the lower side and can rotate.

Beneficially, the limiting device comprises a limiting drill 30 slidably disposed in the limiting cavity 31 and capable of rotating, a limiting rotating plate 13 is rotatably mounted on one side of the limiting drill 30 close to the central axis of the main body 10, a limiting spring 14 is fixedly connected between one side end surface of the limiting rotating plate 13 close to the central axis of the main body 10 and one side end wall of the limiting cavity 31 close to the central axis of the main body 10, a motor shaft 66 is rotatably disposed between the right side of the upper end wall and the right side of the lower end wall of the gear cavity 17, the upper side and the lower side of the upper end wall of the gear cavity 17 both extend into the limiting cavity 31 and are in splined connection with the limiting drill 30, the upper end wall of the gear cavity 17 is provided with a main motor 67 in power connection with the motor shaft 66, and the part of the motor shaft 66 located in the gear cavity 17 is connected with the, slide in 33, slide be provided with restriction drill bit 30 normal running fit's sliding block 32, upside the lower terminal wall of rotary drum chamber 16 rotates and is provided with the downside and passes gear chamber 17 and extend to the downside pivot 51 in the rotary drum chamber 16, be fixed with in the pivot 51 and be located rotary drum 53 in the rotary drum chamber 16, the left end wall of rotary drum chamber 16 slides and is provided with the part and extends to slide 33 in the chamber and with sliding block 32 fixed connection's slide bar 11, slide bar 11 is close to one side of main part 10 the central axis is fixed with guide arm 15, the outside terminal surface of rotary drum 53 be provided with guide arm 15 right side sliding connection's ring form recess, pivot 51 is located part in the gear chamber 17 through a pair of straight-tooth cylindrical gear pair with motor shaft 66 connects.

Advantageously, the clamping device comprises a clamping block 38 slidably disposed in the clamping cavity 35, a friction pad 34 is fixed to an end surface of the clamping block 38 away from the central axis of the main body 10, and upper and lower sides of the rotating shaft 51 extend into the clamping cavity 35 and are in splined connection with the clamping block 38.

Advantageously, the connecting device comprises a resilient block 43 slidably disposed in the resilient chamber 44, the gas cannot pass through the connection between the resilient block 43 and the resilient chamber 44, a resilient spring 42 is fixedly connected between one side end surface of the resilient block 43 close to the central axis of the main body 10 and one side end wall of the resilient chamber 44 close to the central axis of the main body 10, a pressure rod 41 is slidably disposed in the pressure chamber 40, the gas cannot pass through the connection between the pressure rod 41 and the pressure chamber 40, a pressure spring 39 is fixedly connected between the left end surface of the pressure rod 41 and the left end wall of the pressure chamber 40, a vent pipe 52 communicating with the resilient chamber 44 is disposed in the left end wall of the pressure spring 39, a sealing chamber 47 communicating with one side end wall of the vent chamber 46 close to the central axis of the main body 10, and a sealing plate 45 slidably disposed in the sealing chamber 47 and capable of sealing the opening of the vent chamber 46, the sealing plate 45 and the junction gas of sealed chamber 47 can't pass through, the sealing plate 45 is close to one side terminal surface of main part 10 the central axis with the sealed chamber 47 is close to fixedly connected with sealing spring 48 between the side end wall of main part 10 the central axis, it is provided with atmospheric pressure piece 36 to slide in the atmospheric pressure chamber 37, atmospheric pressure piece 36 with the junction gas of atmospheric pressure chamber 37 can't pass through, the lower terminal wall intercommunication of atmospheric pressure chamber 37 be provided with sealing tube 50 that sealed chamber 47 communicates.

The use steps herein are described in detail below with reference to fig. 1-3:

in the initial working state, the elastic block 43 is positioned in the elastic cavity 44, the sealing plate 45 seals the exhaust cavity 46, the limiting drill 30 is positioned in the limiting cavity 31, the clamping block 38 is positioned in the clamping cavity 35, and the intermittent plate 21 is in fit connection with the fixture block 19.

In operation, a steel pipe with a larger diameter is placed on the left side of the main body 10, then the main body 10 is gradually moved to the left side to gradually move the left side part of the main body 10 to the inside of the steel pipe, and simultaneously the main motor 67 is started to drive the motor shaft 66 to rotate, thereby the intermediate shaft 65 is driven to rotate by the pair of bevel gear pairs, thereby the intermittent block 20 is driven to rotate, thereby the intermittent plate 21 is driven to rotate by the fixture block 19, thereby the intermittent thread block 49 is driven to rotate, thereby the intermittent thread block 49 is moved upwards, simultaneously the intermittent shaft 28 is driven to rotate by the intermittent plate 21, thereby the intermittent shaft 28 is driven to rotate by the pair of bevel gear pairs, thereby the power shaft 25 on the upper side is driven to rotate by the power shaft 25 on the lower side by the set of belt pulleys, thereby the power shaft 25 drives the power gear 26 to rotate, thereby the polishing gear ring 54 is, meanwhile, the grinding rotation block 64 rotates to drive the rotation wheel 56 to rotate, thereby driving the rotation shaft 57 to rotate, thereby driving the output shaft 59 to rotate through the acceleration action of the transmission 58, thereby driving the grinding shaft 63 to rotate through a pair of bevel gear pairs for secondary acceleration, thereby driving the grinding wheel 62 to rotate, thereby enabling the grinding wheel 62 to grind the inner wall of the steel pipe, simultaneously driving the limiting bit 30 to rotate by the motor shaft 66, simultaneously driving the rotation shaft 51 to rotate by the motor shaft 66 through a pair of spur gear pairs, thereby enabling the rotation shaft 51 to drive the rotation drum 53 to rotate, thereby driving the slide rod 11 to reciprocate up and down through the guide rod 15, thereby driving the slide block 32 to reciprocate up and down, thereby driving the limiting bit 30 to reciprocate up and down, thereby enabling the limiting bit 30 to drill through the steel pipe, when the main body 10 moves to the limit position to the left side, the limiting bit 30 moves out of the limiting cavity 31 and drills, then the main motor 67 stops rotating, in the process, the fixture block 19 is not disconnected from the intermittent plate 21, meanwhile, the rotating shaft 51 drives the clamping block 38 to slowly move towards one side far away from the central axis of the main body 10, when the inner wall of the steel pipe is drilled through by the limiting drill 30, the friction pad 34 is contacted with the inner wall of the steel pipe, when the main motor 67 is tightly contacted, the friction pad 34 is tightly connected with the inner wall of the steel pipe, at the moment, the main body 10 is fixedly connected with the steel pipe with large diameter, then the steel pipe with small diameter is inserted into the right part of the main body 10, so that the pressure rod 41 is contacted with one end of the steel pipe with small diameter, and the pressure rod 41 moves towards the left side, so that the gas in the pressure cavity 40 is pressed into the elastic cavity 44 through the vent pipe 52, so that the elastic block 43 moves towards one side far away from the central axis of the main body 10, at this time, the large diameter steel pipe and the small diameter steel pipe are tightly connected through the main body 10, and if the small diameter steel pipe is to be removed, the air pressure block 36 is pulled out upwards, so that the air in the sealing cavity 47 enters the air pressure cavity 37 through the sealing pipe 50, the sealing plate 45 moves in the sealing cavity 47, the exhaust cavity 46 is communicated with the elastic cavity 44, the elastic block 43 is contacted with the air pressure influence and moves to the initial position under the action of the elastic spring 42, the fixing of the inner wall of the small diameter steel pipe is released, and the small diameter steel pipe is detached.

The invention has the beneficial effects that: the steel pipe connecting and separating device can be completed without operation of professionals, the inner wall of a steel pipe with a larger diameter can be polished and fixed and clamped, so that the risk of slipping of a connector when the connector is connected with the steel pipe is avoided, meanwhile, the steel pipe with a smaller diameter can be connected with the connector through the air pressure effect, so that the connection of the two steel pipes with different diameters is achieved, meanwhile, the steel pipes can be separated in a short time, and the connection and separation efficiency of the steel pipes is improved.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.