CN212794229U - Steel pipe end grinding device for building - Google Patents

Abstract

The utility model provides a steel pipe end grinding device for building, this grinding device includes: the polishing device comprises a shell, a plurality of inner wall polishing mechanisms arranged at intervals along the circumferential direction of the shell, and a plurality of outer wall polishing mechanisms arranged in one-to-one correspondence with the inner wall polishing mechanisms; wherein, an inverted barrel body is arranged in the shell and is rotatably connected with the shell; the inner wall polishing mechanism is connected to the inverted barrel body in a sliding manner along the radial direction of the inverted barrel body; the outer wall polishing mechanism is connected to the inverted barrel body in a sliding manner along the radial direction of the inverted barrel body; the corresponding inner wall polishing mechanism and the outer wall polishing mechanism are in transmission connection through a first transmission mechanism; the part of the inner wall polishing mechanism below the inverted barrel body is connected with a pedal mechanism outside the shell, the pedal mechanism is connected with the inner wall polishing mechanism through a second transmission mechanism, and a first reset mechanism is arranged on the pedal mechanism. The polishing device achieves polishing of steel pipes with different diameters, improves the quality of finished products, and meets the use requirements of buildings.

Description

Steel pipe end grinding device for building

Technical Field

The utility model relates to a building technical field particularly, relates to a steel pipe end grinding device for building.

Background

The steel pipe is the steel that has hollow cross-section, its length is far more than diameter or girth, divide into circular according to cross sectional shape, it is square, rectangle and special-shaped steel pipe, divide into carbon element structural steel pipe according to the material, low alloy structural steel pipe, alloy steel pipe and compound steel pipe, divide into seamless steel pipe and welded steel pipe according to production technology, wherein seamless steel pipe divides hot rolling and cold rolling two kinds again, welded steel pipe divides straight seam welded steel pipe and spiral seam welded steel pipe again, traditional steel pipe port grinding device structure is complicated, the function is single, the practicality is poor, only can carry out the port to specific model and polish, when different models or special-shaped steel pipe need polish, need change grinding device or grinding tool, the operation is complicated, low in work efficiency, and can not carry out fine polishing for the steel pipe to different models, can not satisfy the building user.

Disclosure of Invention

In view of this, the utility model provides a steel pipe end grinding device for building aims at solving current grinding device and can only carry out the problem that the port was polished to specific model.

The utility model provides a steel pipe end grinding device for building, this grinding device includes: the polishing device comprises a shell, a plurality of inner wall polishing mechanisms arranged at intervals along the circumferential direction of the shell, and a plurality of outer wall polishing mechanisms arranged in one-to-one correspondence with the inner wall polishing mechanisms; wherein, an inverted barrel body is also arranged in the shell and is rotatably connected with the shell; the inner wall polishing mechanism is positioned in the shell and is connected to the inverted barrel body in a sliding manner along the radial direction of the inverted barrel body; the outer wall grinding mechanism is arranged between the inner wall grinding mechanism corresponding to the outer wall grinding mechanism and the inner wall of the shell, and the outer wall grinding mechanism is connected to the inverted barrel body in a sliding manner along the radial direction of the inverted barrel body; the corresponding inner wall polishing mechanism and the outer wall polishing mechanism are in transmission connection through the first transmission mechanism so as to enable the inner wall polishing mechanism and the outer wall polishing mechanism to move in the radial direction of the shell or back to back; the part of the inner wall polishing mechanism below the inverted barrel body is connected with a pedal mechanism positioned outside the shell, the pedal mechanism is connected with the inner wall polishing mechanism through a second transmission mechanism, a first reset mechanism is arranged on the pedal mechanism, and when the pedal mechanism moves downwards, the second transmission mechanism is used for driving the inner wall polishing mechanism to move towards the axis close to the inverted barrel body so as to drive the outer wall polishing mechanism to move towards the axis far away from the inverted barrel body, so that a steel pipe is placed between the inner wall polishing mechanism and the outer wall polishing mechanism; the second reset mechanism is used for enabling the pedal mechanism to reset upwards so as to drive the inner wall polishing mechanism to move towards the axis far away from the inverted barrel body through the second transmission mechanism, and the outer wall polishing mechanism moves towards the axis close to the inverted barrel body so as to enable the inner wall polishing mechanism and the outer wall polishing mechanism to respectively abut against the inner wall and the outer wall of the steel pipe and polish the inner wall and the outer wall at the end of the steel pipe.

Further, above-mentioned steel pipe end grinding device for building, inner wall grinding machanism includes: the first connecting rod, the first dovetail block, the first V-shaped plate and the second V-shaped plate; the top plate of the inverted barrel body is radially provided with a first dovetail groove, the first dovetail block is connected in the first dovetail groove in a sliding manner along the length direction of the first dovetail groove, the first connecting rod is vertically arranged, the top end of the first dovetail block is connected to the bottom wall of the first dovetail block, the first bent part of the first V-shaped plate is vertically arranged and connected to the top wall of the first dovetail block, the second bent part of the first V-shaped plate is obliquely arranged from bottom to top in a direction close to the axis of the shell, and the side wall, back to the axis of the shell, of the first V-shaped plate is provided with an inner wall polishing layer for polishing the inner wall of the steel pipe; the third bent part of the second V-shaped plate is vertically arranged and connected to the top end of the second bent part, the fourth bent part of the second V-shaped plate is obliquely arranged from bottom to top in the direction away from the axis of the shell, and a baffle is arranged at the top end of the fourth bent part and used for guiding the steel pipe.

Further, above-mentioned steel pipe end grinding device for building, outer wall grinding machanism includes: the second connecting rod, the second dovetail block, the L-shaped rod and the U-shaped rod; the top wall of the inverted barrel body is radially provided with a second dovetail groove, the second dovetail block is slidably connected in the second dovetail groove along the length direction of the second dovetail groove, the second connecting rod is vertically arranged, the top end of the second connecting rod is connected to the bottom wall of the second dovetail block, and the L-shaped rod is arranged and connected to the top wall of the second dovetail block; the U-shaped rod is arranged and connected to the L-shaped rod, an opening of the U-shaped rod faces the axis of the shell, a first square block is arranged at the end part of a lower connecting part of the U-shaped rod, and an outer wall polishing layer is arranged on the wall face, facing the axis of the shell, of the first square block and used for polishing the outer wall of the steel pipe; the end part of the upper connecting part of the U-shaped rod is provided with a second square block for guiding the steel pipe.

Further, above-mentioned steel pipe end grinding device for building, second drive mechanism includes: a third dovetail block, a transverse connecting rod and a hinge rod; a third dovetail groove is formed in the side wall of the shell along the axial direction of the shell, a third dovetail block is connected in the third dovetail groove in a sliding mode along the length direction of the third dovetail groove, and the third dovetail block is connected with the pedal mechanism to move up and down along with the pedal mechanism; the one end of horizontal connecting rod is connected on the third dovetail block, the other end with the bottom of hinge bar is connected, the horizontal connecting rod is used for following the third dovetail block is followed drive when the length direction of third dovetail reciprocates the bottom of hinge bar removes, so that the hinge bar rotates, make with inner wall grinding machanism orientation that the hinge bar is connected is close to or keeps away from the direction of casing axis removes.

Furthermore, the steel pipe end grinding device for the building is characterized in that a support rod is further arranged in the shell and used for supporting the driving mechanism; a sliding body is sleeved on the outer wall of the supporting rod in a sliding manner along the axial direction of the supporting rod and is connected with the end part of the transverse connecting rod so as to move up and down along with the transverse connecting rod; the outer wall of the sliding body is provided with an annular groove along the circumferential direction of the sliding body, the inner portion of the annular groove is slidably provided with sliding blocks which are arranged in a clamping mode and correspond to the hinge rods one to one, the bottom ends of the hinge rods are hinged to the sliding blocks, and the sliding blocks drive the bottom ends of the hinge rods to move up and down.

Further, above-mentioned steel pipe end grinding device for building, first drive mechanism includes: a first rack, a second rack and a gear; the teeth of the first rack and the second rack are arranged oppositely, and the gear is arranged between the first rack and the second rack and is respectively meshed with the first rack and the second rack, so that the moving directions of the first rack and the second rack are opposite.

Furthermore, above-mentioned steel pipe end grinding device for building, be connected with actuating mechanism on the inversion staving for the drive the inversion staving is rotatory, in order to drive inner wall grinding machanism with outer wall grinding machanism is rotatory, in order to right the whole week of interior outer wall of steel pipe end polishes.

Furthermore, above-mentioned steel pipe end grinding device for building, still be equipped with the air-blower on the casing for to blow the top of inverting the staving, so that the sweeps that the steel pipe was polished falls into from the groove that inverting the staving roof was seted up the bottom of casing realizes the collection of sweeps.

Furthermore, according to the steel pipe end grinding device for the building, the top end of the inner wall grinding mechanism is provided with the first ball, the top end of the outer wall grinding mechanism is provided with the second ball, and the first ball and the second ball are respectively used for being pressed against the inner wall and the outer wall of the steel pipe so as to limit the steel pipe and guide the steel pipe to move along the axial direction of the shell.

Furthermore, according to the steel pipe end grinding device for the building, a supporting mechanism is hinged to the part, located above the inverted barrel body, of the inner wall grinding mechanism and used for supporting the steel pipe; and a second reset mechanism is arranged between the supporting mechanism and the inner wall polishing mechanism.

The steel pipe end polishing device for the building, provided by the utility model, the inner wall polishing mechanism and the outer wall polishing mechanism are in transmission connection through the first transmission mechanism, so that the inner wall polishing mechanism and the outer wall polishing mechanism move in the radial direction of the shell in opposite directions or in opposite directions, then when the inner wall polishing mechanism and the outer wall polishing mechanism move back to the maximum distance, the steel pipe is inserted between the inner wall polishing mechanism and the outer wall polishing mechanism, and the inner wall polishing mechanism and the outer wall polishing mechanism move in opposite directions until the inner wall polishing mechanism and the outer wall polishing mechanism are respectively pressed against the inner wall and the outer wall of the steel pipe, and the inner wall and the outer wall at the end of the steel pipe are polished by the inner wall polishing mechanism and the outer wall polishing mechanism, and then realized polishing the steel pipe of different diameters, and improved finished product quality, satisfied building user demand.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural view of a steel pipe end grinding device for a building according to an embodiment of the present invention when a steel pipe is placed therein;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is the utility model provides a structure schematic diagram when steel pipe end grinding device for building polishes.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 4, a preferred structure of a steel pipe end grinding device for building provided by an embodiment of the present invention is shown. As shown in the drawing, the polishing apparatus includes: the grinding machine comprises a shell 1, a plurality of inner wall grinding mechanisms 2 arranged at intervals along the circumferential direction of the shell 1, a plurality of outer wall grinding mechanisms 3 arranged in one-to-one correspondence to the inner wall grinding mechanisms 2, an inverted barrel body 4, a first transmission mechanism 5, a pedal mechanism 6, a second transmission mechanism 7, a first reset mechanism 8 and a driving mechanism 9; wherein,

an inverted barrel body 4 is further arranged in the shell 1 and is rotatably connected with the shell 1. Specifically, the inverted barrel body 4 is a barrel structure with an opening at one end and a hollow interior, is inverted in the shell 1 and is coaxially arranged with the shell 1, and the inverted barrel body 4 and the shell 1 can rotate relative to each other, that is, the inverted barrel body 4 can rotate around the axis of the shell 1, so as to drive the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 connected to the inverted barrel body 4 to rotate. An annular dovetail groove 101 is formed in the inner wall of the shell 1 along the circumferential direction, a plurality of fourth dovetail blocks 102 arranged at intervals are clamped in the inner wall of the shell, part of each fourth dovetail block 102 is clamped in the annular dovetail groove 101, and the exposed part of each fourth dovetail block 102 is connected with the inverted barrel body 4, so that the fourth dovetail blocks 102 synchronously rotate along with the inverted barrel body 4, the fourth dovetail blocks 102 are guided through the annular dovetail groove 101, and the rotation stability of the inverted barrel body 4 is further ensured; the number of the fourth dovetail blocks 102 may be at least two, or may be other numbers, which is not limited in this embodiment; the fourth dovetail block 102 and the inverted bucket body 4 may be fixedly connected so as to rotate synchronously therebetween. Wherein, the top wall of the shell 1 is provided with an installation through hole 103, so that the steel pipe 10 is inserted between the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 from the installation through hole 103. In the present embodiment, the housing 1 is arranged vertically (with respect to the position shown in fig. 1), i.e. the axial direction of the housing 1 is the vertical direction.

The inner wall grinding mechanism 2 is located in the housing 1 and is slidably connected to the inverted bucket body 4 in a radial direction (a horizontal direction as shown in fig. 1) of the inverted bucket body 4. Specifically, the inner wall grinding mechanism 2 is inserted through the top plate of the inverted bucket body 4 and is slidably connected to the inverted bucket body 4 in the radial direction of the inverted bucket body 4, so that the inner wall grinding mechanism 2 moves toward a direction close to or away from the axis of the inverted bucket body 4 (the inner wall grinding mechanism 2 on the left side moves to the right or to the left as shown in fig. 1). The inner wall grinding mechanisms 2 can be arranged at intervals along the circumferential direction of the inverted bucket body 4, and preferably, the inner wall grinding mechanisms 2 are arranged symmetrically with respect to the axis of the inverted bucket body 4. In the embodiment, two inner wall grinding mechanisms 2 are taken as an example for description, and the two inner wall grinding mechanisms 2 have the same distance with the axis of the inverted barrel body 4 and are symmetrically arranged about the axis of the inverted barrel body 4. Wherein, a telescopic structure can be arranged between the adjacent inner wall grinding mechanisms 2.

The outer wall grinding mechanism is arranged 3 between the corresponding inner wall grinding mechanism 2 and the inner wall of the shell 1, and the outer wall grinding mechanism 3 is connected to the inverted barrel body 4 in a sliding mode along the radial direction of the inverted barrel body 4. Specifically, the outer wall grinding mechanism 3 is located between the corresponding inner wall grinding mechanism 2 and the inner wall of the housing 1, and the outer wall grinding mechanism 3 is inserted into the top plate of the inverted barrel 4 and slidably connected to the inverted barrel 4 along the radial direction of the inverted barrel 4, so that the outer wall grinding mechanism 3 moves toward a direction close to or away from the axis of the inverted barrel 4 (the left outer wall grinding mechanism 3 moves to the right or to the left as shown in fig. 1). Each outer wall grinding mechanism arrangement 3 may be arranged circumferentially at intervals along the inverted bucket body 4, preferably symmetrically about the axis of the inverted bucket body 4 between each outer wall grinding mechanism arrangement 3. In this embodiment, two outer wall polishing mechanisms 3 are taken as an example for description, and the two outer wall polishing mechanisms 3 have the same distance from the axis of the inverted barrel body 4 and are symmetrically arranged about the axis of the inverted barrel body 4.

The corresponding inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 are in transmission connection through a first transmission mechanism 5, so that the inner wall polishing mechanism and the outer wall polishing mechanism move in the radial direction of the shell 1 or move back to back. Specifically, if the inner wall polishing mechanism 2 moves in a direction close to the axis of the inverted barrel body 4 along the radial direction of the inverted barrel body 4, the first transmission mechanism 5 acts therewith and drives the outer wall polishing mechanism 3 to move in a direction away from the axis of the inverted barrel body 4, which is exemplified by the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 on the left side, when the inner wall polishing mechanism 2 on the left side moves to the right, the first transmission mechanism 5 acts therewith and drives the outer wall polishing mechanism 3 on the left side to move to the left, so that the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 on the left side move back to each other, i.e., the distance is; the motion principle of the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 on the right side is similar to that on the left side, and the distance between the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 on the right side is synchronously increased; meanwhile, in the present embodiment, two inner wall polishing mechanisms 2 and two outer wall polishing mechanisms 3 are taken as an example for description, and may be multiple, and in the present embodiment, no limitation is made on the two; the corresponding inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 can be arranged along the radial direction of the inverted barrel body 4 so as to polish the steel pipe 10 along the radial movement of the inverted barrel body 4. Wherein, the first transmission mechanism 5 can be arranged below the top plate of the inverted barrel body 4 to avoid interfering the grinding of the steel pipe 10.

The part of the inner wall polishing mechanism 2, which is positioned below the inverted barrel body 4, is connected with a pedal mechanism 6 positioned outside the shell body 1, the pedal mechanism 6 is connected with the inner wall polishing mechanism 2 through a second transmission mechanism 7, and the second transmission mechanism 7 is used for driving the inner wall polishing mechanism 2 to move towards the direction close to or far away from the axis of the inverted barrel body; the pedal mechanism 6 is provided with a first reset mechanism 8, when the pedal mechanism 6 moves downwards, the second transmission mechanism 7 is used for driving the inner wall polishing mechanism 2 to move towards the axis close to the inverted barrel body 4, and driving the outer wall polishing mechanism 3 to move towards the axis far away from the inverted barrel body 4 under the action of the first transmission mechanism 5, so that the steel pipe 10 is placed between the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3; the second reset mechanism 8 is used for enabling the pedal mechanism 6 to reset upwards, so that the second transmission mechanism 7 drives the inner wall polishing mechanism 2 to move towards the axis far away from the inverted barrel body 4, the outer wall polishing mechanism 3 moves towards the direction close to the axis of the inverted barrel body 4, the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 are respectively pressed on the inner wall and the outer wall of the steel pipe 10, and the inner wall and the outer wall at the end of the steel pipe 10 are polished. Specifically, the pedal mechanism 6 is at least partially disposed outside the housing 1, so that an operator can perform stepping and releasing operations, thereby moving the pedal mechanism 6 up and down along the axial direction of the housing 1; a first reset mechanism 8 can be arranged between the pedal mechanism 6 and the shell 1, so that when an operator releases the pedal mechanism 6, the reset mechanism 8 acts to drive the pedal mechanism 6 to move upwards to an original position; the second transmission mechanism 7 moves along with the pedal mechanism 6 to drive the inner wall grinding mechanism 2 to move towards the direction close to or far away from the axis, thereby realizing the opposite or back-to-back movement between the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3, inserting the steel pipe 10 between the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 from the installation through hole 103 after the back-to-back movement, then the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 move oppositely so that the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 are respectively pressed on the inner wall and the outer wall of the steel pipe 10, and the inner and outer walls of the end of the steel pipe 10 are polished, after burrs on the inner wall or the outer wall of the steel pipe 10 are removed after polishing, the steel pipe 10 moves downwards under the action of gravity, so that the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 continue to grind the steel pipe 10 until the bottom wall of the steel pipe 10 contacts the top wall of the top plate of the inverted barrel body 4. The number of the pedal mechanisms 6 may be one or more, and is not limited in this embodiment; the first return mechanism 8 may be a return spring and is provided in one-to-one correspondence with the pedal mechanisms 6.

In order to guide the downward movement of the steel pipe 10, preferably, the top end (relative to the position shown in fig. 1) of the inner wall grinding mechanism 2 is provided with a first ball 27, the top end of the outer wall grinding mechanism 3 is provided with a second ball 31, the first ball 27 and the second ball 31 are respectively used for pressing against the inner wall and the outer wall of the steel pipe 10 to limit the position of the steel pipe 10 so as to prevent the steel pipe 10 from moving along the radial direction of the inverted bucket body 4, the first ball 27 and the second ball 31 can roll along the inner wall and the outer wall of the steel pipe so as to guide the movement of the steel pipe 10 along the axial direction of the shell body 1, and the first ball 27 and the second ball 31 can be arranged to reduce friction force.

In order to polish the whole circumference of the inner and outer walls at the end of the steel pipe 10, it is preferable that a driving mechanism 9 is connected to the inverted barrel 4 to drive the inverted barrel 4 to rotate so as to drive the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 to rotate, and polish the whole circumference of the inner and outer walls at the end of the steel pipe 10. Specifically, the driving mechanism 9 may be a driving motor, and an output end thereof may be connected to a bottom wall of a top plate of the inverted barrel body 4 to drive the inverted barrel body 4 to rotate around an axis of the inverted barrel body 4, and further drive the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 disposed on the inverted barrel body 4 to rotate. Wherein, the driving mechanism 9 can be connected with a controller to control the action of the driving mechanism 9 through the controller.

In order to facilitate the fixing of the steel pipe 10 before polishing in the initial stage, preferably, a part of the inner wall polishing mechanism 2 above the inverted barrel body 4 (relative to the position shown in fig. 1) is hinged with a support mechanism 11 for supporting the steel pipe 10; and a second reset mechanism 12 is arranged between the supporting mechanism 11 and the inner wall grinding mechanism 2. Specifically, the supporting mechanism 11 may be disposed in one-to-one correspondence with the inner wall polishing mechanism 2, a fixed end of the supporting mechanism 11 (a right end of the left supporting mechanism 11 shown in fig. 1) is hinged to the inner wall polishing mechanism 2, an end portion or a middle portion of the supporting mechanism 11, which is far away from the fixed end, is connected to the inner wall polishing mechanism 2 through the second resetting mechanism 12, a connection point, at which the second resetting mechanism 12 is connected to the inner wall polishing mechanism 2, is located above a connection point, at which the fixed end of the supporting mechanism 11 is connected to the inner wall polishing mechanism 2, so that the second resetting mechanism 12 stretches the supporting mechanism 11, and stability of the supporting mechanism 11 for the steel pipe 10. When the steel pipe is in the position, the supporting mechanism 11 is stretched through the second resetting mechanism 12, and the supporting mechanism 11 is horizontally arranged to support the steel pipe 10, as shown in fig. 1; when the steel pipe 10 moves downwards under the action of the downward driving force, the supporting mechanism 11 rotates clockwise or anticlockwise around the fixed end of the supporting mechanism to rotate into the steel pipe 10, so that the steel pipe 10 moves downwards to the inner wall polishing layer 25 of the inner wall polishing mechanism 2, as shown in fig. 4; and after the steel pipe 10 is polished and taken out from the shell 1, the supporting mechanism 11 is reset to the horizontal position under the action of the second resetting mechanism 12. The supporting mechanism 11 may be a horizontal plate or a horizontal bar structure, and the second returning mechanism 12 may be a return spring.

The shell 1 is also provided with a blower 13 for blowing air above the inverted barrel body 4, so that scraps polished by the steel pipe 10 fall into the bottom of the shell 1 from a groove formed in a top plate of the inverted barrel body 4, and collection of the scraps is realized. Specifically, the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 are both arranged on the top plate of the inverted barrel body 4 in a penetrating manner, so that a plurality of grooves corresponding to the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 are inevitably formed on the top plate of the inverted barrel body 4, and the inner wall polishing mechanism 2 and the outer wall polishing mechanism 3 can move along the radial direction of the inverted barrel body 4, so that scraps polished by the steel pipe 10 can fall into the bottom of the shell 1 from the grooves formed on the top plate of the inverted barrel body 4; the blower 13 can blow air above the inverted barrel body 4, so that the waste chips fall into the bottom of the shell 1 under the action of the air to realize the collection of the waste chips. The blower 13 may also be electrically connected to a controller to control the blower 13 through the controller.

With continued reference to fig. 1 and 4, the housing 1 may include a first barrel 104 and a second barrel 105 stacked up and down and having a through interior, and a first through hole 1051 is formed in a top wall of the second barrel 105 located below, so that the first barrel 104 and the second barrel 105 are communicated with each other, and the top wall of the second barrel 105 is prevented from interfering with the internal structure; the installation through hole 103 is opened on the top wall of the first barrel body 104 located above so that the steel pipe 10 is inserted into the first barrel body 104 from the top wall of the first barrel body 104, and further the related structure located in the first barrel body 104 is improved to guide and polish the steel pipe 10. Wherein the inverted tub 4 is disposed in the first tub 104, so that the annular dovetail groove 101 is opened on the inner wall of the first tub 104. In order to support and fix the driving mechanism 9, a support rod 106 is preferably disposed in the housing 1 for supporting the driving mechanism 9; in this embodiment, the supporting rod 106 is disposed in the second barrel 105, and the top end of the supporting rod passes through the first through hole 1051 and is located in the first barrel 104, so as to support the driving mechanism 9 located in the first barrel 104. In order to support and fix the support rod 106, preferably, two diagonal rods 107 are symmetrically arranged in the second barrel body 105, the top ends of the two diagonal rods 107 are fixedly connected, and the top ends of the two diagonal rods 2 are also fixedly connected with the bottom end of the support rod 106; the cross section of the supporting rod 106 may be square, or may be other structures such as circular, which is not limited in this embodiment.

With continued reference to fig. 1 to 4, the inner wall sanding mechanism 2 includes: a first connecting rod 21, a first dovetail block 22, a first V-shaped plate 23 and a second V-shaped plate 24; a first dovetail groove 41 is formed in a top plate of the inverted barrel body 4 along the radial direction of the inverted barrel body, the first dovetail block 22 is slidably connected in the first dovetail groove 41 along the length direction (the horizontal direction shown in fig. 1) of the first dovetail groove 41, the first connecting rod 21 is vertically arranged, the top end of the first connecting rod is connected to the bottom wall of the first dovetail block 22, the first bent part 231 of the first V-shaped plate 23 is vertically arranged and connected to the top wall of the first dovetail block 22, the second bent part 232 of the first V-shaped plate 23 is obliquely arranged from bottom to top in the direction close to the axis of the housing 1, and an inner wall polishing layer 25 is arranged on the side wall of the first V-shaped plate 23, which is opposite to the axis of the housing 1, and is used for polishing the inner wall of the; the third bent portion 241 of the second V-shaped plate 24 is vertically disposed and connected to the top end of the second bent portion 232, the fourth bent portion 242 of the second V-shaped plate 24 is disposed obliquely from bottom to top in a direction away from the axis of the housing 1, and the top end of the fourth bent portion 242 may be provided with a baffle 28 for guiding the steel pipe 10.

Specifically, taking two inner wall grinding mechanisms 2 as an example for explanation, two first dovetail grooves 41 are symmetrically formed on the top plate of the inverted barrel body 4 and used for respectively placing two first dovetail blocks 22 of the two inner wall grinding mechanisms 2; the length direction of the first dovetail groove 41 is arranged along the radial direction of the inverted barrel body 4, the first dovetail block 22 is arranged in the first dovetail groove 41 in a fitting and sliding manner, the top wall of the first dovetail block 22 is fixedly connected with the bottom end of the first V-shaped plate 23, two first through grooves 42 are symmetrically formed in the bottom wall of the inverted barrel body 4 and communicated with the first dovetail groove 41, the bottom surface of the first dovetail block 22 is fixedly connected with a first connecting rod 21, the first connecting rod 21 sequentially penetrates through the first through grooves 42 and the first through holes 1051 to penetrate into the second barrel body 105, and the bottom end of the first connecting rod 21 is hinged with a hinge rod 73 of the second transmission mechanism 7; in addition, the first connecting rod 21 is further fixedly connected to the first rack 51 of the first transmission mechanism 5, so as to drive the first rack 51 to move along the length direction of the first dovetail groove 41. In order to improve the stability between the two second V-shaped plates 24 of the two inner wall grinding mechanisms 2, preferably, a plurality of multi-section telescopic rods 26 may be fixedly connected between the two second V-shaped plates 24 along the length direction of the third bending portion 241, as a telescopic structure between adjacent inner wall grinding mechanisms 2. The first ball 27 is disposed at the top end of the fourth bent portion 242, a rolling cavity is defined between the fourth bent portion 242 and the baffle 28, so that the first ball 27 is partially rotatably clamped in the rolling cavity, and a part of the first ball 27 passes through the baffle 28 and is disposed on the other side of the baffle 28; and, the first ball 27 and the inner wall polishing layer 25 disposed on the sidewall of the first bending part 231 are in the same vertical plane. The top end of the baffle 28 may protrude to the outside through the installation through-hole 103 to primarily guide the steel pipe 10. The supporting mechanism 11 may be hinged on the third bending portion 241, and the top end of the second returning mechanism 12 may be connected on the fourth bending portion 242. Wherein, an included angle between the first bending part 231 and the second bending part 232 may be 135 °. The first bending portion 231 and the first dovetail block 22 may be fixed by welding.

With continued reference to fig. 1-4, the outer wall grinding mechanism 3 includes: a second connecting rod 32, a second dovetail block 33, an L-shaped rod 34, and a U-shaped rod 35; a second dovetail groove 43 is formed in the top wall of the inverted barrel body 4 along the radial direction of the inverted barrel body, the second dovetail block 33 is slidably connected in the second dovetail groove 43 along the length direction of the second dovetail groove 43, the second connecting rod 32 is vertically arranged, the top end of the second connecting rod is connected to the bottom wall of the second dovetail block 33, and the L-shaped rod 34 is arranged and connected to the top wall of the second dovetail block 33; the U-shaped rod 35 is arranged and connected to the L-shaped rod 34, the opening of the U-shaped rod 34 faces the axis of the shell 1, the end part of the lower connecting part 351 of the U-shaped rod 35 is provided with a first square block 36, and the wall surface of the first square block 36 facing the axis of the shell 1 is provided with an outer wall polishing layer 37 for polishing the outer wall of the steel pipe 10; the end of the upper connection portion 352 of the U-shaped bar 35 is provided with a second square block 38 for guiding the steel duct 10.

Specifically, taking two outer wall polishing mechanisms 3 as an example for explanation, two second dovetail grooves 43 are symmetrically formed on the top plate of the inverted barrel body 4 and used for respectively placing two second dovetail blocks 33 of the two outer wall polishing mechanisms 3; the length direction of the second dovetail groove 43 is arranged along the radial direction of the inverted barrel body 4, the second dovetail block 33 is arranged in the second dovetail groove 43 in a fit sliding manner, and the top surface of the second dovetail block 33 is fixedly connected with the bottom surface of the vertical rod of the L-shaped rod 34; the cross rod of the L-shaped rod 34 is fixedly connected with a U-shaped rod 35, the opening of the U-shaped rod 35 faces to the axis of the shell 1, namely the openings of the two U-shaped rods 35 are oppositely arranged; in this embodiment, the second ball 31 is embedded in the second square block 38, the sidewall of the second square block 38 may be provided with a second baffle plate to embed the second ball 31 into the second square block 38, the second ball 31 is rotatably connected to the second baffle plate, and the sidewall of the second ball 31 and the outer wall polishing layer 37 are on the same vertical plane. Two second through grooves 44 are symmetrically formed in the bottom wall of the inverted barrel body 4 and communicated with a second dovetail groove 43, and a second connecting rod 32 is fixedly connected to the bottom surface of the second dovetail block 33; the second connecting rod 32 sequentially penetrates through the second through groove 44 to penetrate into the inverted barrel body 4, and the bottom end of the second connecting rod 32 is fixedly connected with the second rack 52 of the first transmission mechanism 5, so that the second connecting rod 32, the second dovetail block 33, the L-shaped rod 34 and the U-shaped rod 35 are driven by the second rack 52 to synchronously move along with the second rack 52.

With continued reference to fig. 1-4, the first transmission 5 includes: a first rack 51, a second rack 52, and a gear 53; the teeth of the first rack 51 and the second rack 52 are arranged oppositely, and the gear 53 is arranged between the first rack 51 and the second rack 52 and is respectively meshed with the first rack 51 and the second rack 52, so that the moving directions of the first rack 51 and the second rack 52 are opposite, and the corresponding inner wall grinding mechanism 2 and the corresponding outer wall grinding mechanism 3 move towards or away from each other. Specifically, the gear 53 is rotatably coupled inside the inverted tub 4 through the rotating shaft 54, that is, the rotating shaft 54 is rotatably coupled inside the rotating shaft 54, and the gear 53 can be fixedly fitted on the rotating shaft 54.

With continued reference to fig. 1 to 4, the second transmission mechanism 7: a third dovetail block 71, a transverse connecting rod 72, a hinge rod 73; wherein, a third dovetail groove 108 is arranged on the side wall of the housing 1 along the axial direction of the housing 1, the third dovetail block 71 is slidably connected in the third dovetail groove 108 along the length direction (vertical direction as shown in fig. 1) of the third dovetail groove 108, and the third dovetail block 71 is connected with the pedal mechanism 6 to move up and down along with the pedal mechanism 6; one end of the transverse connecting rod 72 is connected to the third dovetail block 71, and the other end is connected to the bottom end of the hinge rod 73, and the transverse connecting rod 72 is configured to drive the bottom end of the hinge rod 73 to move when the third dovetail block 71 moves up and down along the length direction of the third dovetail groove 108, so that the hinge rod 73 rotates, and the inner wall polishing mechanism 2 connected to the hinge rod 73 moves toward the direction close to or away from the axis of the housing 1.

Specifically, in the present embodiment, two pedal mechanisms 6 are taken as an example for description, and are respectively connected to the inner wall polishing mechanism 2 through one second transmission mechanism 7, that is, two second transmission mechanisms 7 are provided; two third dovetail grooves 108 are symmetrically formed in the inner side wall of the second barrel body 105, two third through grooves 109 are symmetrically formed in the side wall of the second barrel body 105, and the third through grooves 109 are communicated with the third dovetail grooves 108; a third dovetail block 71 is arranged in the third dovetail groove 108 in a fit sliding manner, the third dovetail block 71 is fixedly connected with the end part of the transverse connecting rod 72, and the third dovetail block 71 is also connected with a pedal mechanism 6 penetrating through the third through groove 109 so as to move up and down in the third dovetail groove 108 along with the pedal mechanism 6; the first restoring mechanism 8 is located in the third dovetail groove 108 and below the third dovetail block 71, and the first restoring mechanism 8 may be a compression spring and has two ends respectively fixedly connected to the second barrel body 105 and the third dovetail block 71. In order to improve the stability of the up-and-down movement of the transverse connecting rod 72, it is preferable that a sliding body 74 is slidably sleeved on the outer wall of the supporting rod 106 along the axial direction (vertical direction as shown in fig. 1) of the supporting rod 106, and is connected with the end of the transverse connecting rod 72 to move up and down with the transverse connecting rod 72; an annular groove 741 is formed in the outer wall of the sliding body 74 along the circumferential direction of the sliding body, sliders 75 which correspond to the hinge rods 73 one by one are slidably clamped in the annular groove 741, the bottom ends of the hinge rods 73 are hinged to the sliders 75, and the sliders 75 drive the bottom ends of the hinge rods 74 to move up and down. The sliding body 74 may be a cylinder structure and is fitted with a sliding sleeve on the supporting rod 106, the sliding block 75 is partially fitted with a sliding sleeve in the annular groove 741, and the sliding block 75 may be dovetail-shaped.

The working process of the polishing device is as follows:

firstly, when the end of the steel pipe needs to be polished, the polishing device is connected with a power supply, the pedal mechanism 6 is manually pedaled, the pedal mechanism 6 drives the third dovetail block 71 to move downwards, the third dovetail block 71 drives the transverse connecting rod 72 to move downwards, the transverse connecting rod 72 drives the sliding body 74 to move downwards, the sliding body 74 drives the sliding block 75 to move downwards, the sliding block 75 drives the bottom end of the hinge rod 73 to move downwards, the two hinge rods 73 drive the two first connecting rods 21 to move towards each other, namely, the two first connecting rods 21 move towards the axis of the inverted barrel body 4, the first connecting rods 21 drive the first dovetail blocks 22 to move towards each other, the first dovetail blocks 22 drive the two first V-shaped plates 23 to move towards each other, the first V-shaped plates 23 drive the inner wall polishing layer 25, the second V-shaped plate 24 moves close to the axis of the inverted barrel body 4, and the second V-shaped plate 24 drives the first ball 27 to move close to the axis of the inverted barrel body 4, namely, the two inner wall polishing layers 25 and the two first balls 27 move oppositely; meanwhile, the first connecting rod 21 drives the first rack 51 to move towards the axis of the inverted barrel body 4, the first rack 51 drives the gear 53 to rotate, the gear 53 drives the second rack 52 to move towards the direction away from the axis of the inverted barrel body 4, the second connecting rod 32 is driven to move towards the direction away from the axis of the inverted barrel body 4, and the second connecting rod 32 drives the second dovetail block 33, the L-shaped rod 34 and the U-shaped rod 35 to move towards the direction away from the axis of the inverted barrel body 4, namely the U-shaped rod 35 and the outer wall polishing layer 37 and the second ball 31 on the U-shaped rod 35 move back to back;

then, inserting the steel pipe 10 to be polished into the top mounting through hole 103, and attaching the bottom end of the steel pipe 10 to the top surface of the supporting mechanism 11;

then, the pedal mechanism 6 is released, the first reset mechanism 8 is compressed to push the third dovetail block 71 to move upwards, the third dovetail block 71 indirectly drives the two first V-shaped plates 23 to move back and forth, and the two L-shaped rods 34 move oppositely, so that the first ball 27 stops moving when moving to be attached to the inner wall of the steel pipe 10, and the inner wall polishing layer 25 can fully polish the inner wall of the steel pipe due to the fact that the first ball 27 and the inner wall polishing layer 25 are located on the same vertical plane, and the quality of polished finished products is indirectly improved; meanwhile, the L-shaped rod 34 indirectly drives the second ball 31 to move and stop moving when being attached to the outer wall of the steel pipe 10, and the second ball 31 and the outer wall polishing layer 37 are positioned on the same vertical plane, so that the outer wall of the steel pipe 10 can be polished fully;

then, operating the controller to enable the driving mechanism 9 and the blower 13 to start working, and pressing the steel pipe 10 downwards, enabling the steel pipe 10 to enable the supporting mechanism 11 to rotate around the fixed end of the supporting mechanism and be located in the steel pipe 10, enabling the supporting mechanism 11 to pull the second resetting mechanism 12, and enabling the steel pipe 10 to descend to the inner wall polishing layer 25;

the output end of the driving mechanism 9 drives the inverted barrel body 4 to rotate, and the inverted barrel body 4 drives the first dovetail block 22 and the second dovetail block 33 to rotate; the first dovetail block 22 drives the first V-shaped plate 2 and the first connecting rod 213 to rotate, and the first V-shaped plate 23 drives the inner wall polishing layer 25 to rotate, so that the inner wall of the steel pipe 10 is fully polished (the first connecting rod 21 drives the hinge rod 73 to rotate, and the hinge rod 73 drives the slider 75 to rotate in the annular groove 741); meanwhile, the second dovetail block 33 drives the L-shaped rod 34 to rotate, the L-shaped rod 34 drives the U-shaped rod 35 to rotate, the U-shaped rod 35 drives the first square block 36 to rotate, the first square block 36 drives the outer wall polishing layer 37 to rotate, so that the outer wall of the steel pipe 10 is fully polished, when the steel pipe 10 cannot descend, the bottom end of the steel pipe is proved to be attached to the top surface of the inverted barrel body 4, and therefore the fact that the inner wall polishing layer 25 and the outer wall polishing layer 37 fully polish the inner wall and the outer wall of the steel pipe 10 is indirectly proved; the blower 13 blows air into the first barrel 104 while the driving mechanism 9 acts, so that the polished scraps fall into the second barrel 105 through the first through hole 1051 from the first dovetail groove 41, the first through groove 42, the second dovetail groove 43 and the second through groove 44 formed in the top surface of the inverted barrel 4, the collection of the scraps is indirectly realized, the flying in disorder is prevented, and the working efficiency is improved;

finally, operating the controller to stop the driving mechanism 9 and taking out the polished steel pipe; other steel pipes 10 can be polished according to the operation, the scraps falling into the second barrel body 105 are cleaned discontinuously, the first balls 27 and the second balls 31 are arranged, the steel pipes 10 fall conveniently, the work efficiency is improved indirectly, and the labor intensity is reduced.

To sum up, the steel pipe end grinding device for building that this embodiment provided, connect through the transmission of first drive mechanism between inner wall grinding machanism and the outer wall grinding machanism, so that inner wall grinding machanism and outer wall grinding machanism along the radial opposite directions or the back-to-back motion of casing, and then when inner wall grinding machanism and outer wall grinding machanism back-to-back motion are the biggest to the interval, insert the steel pipe to between inner wall grinding machanism and the outer wall grinding machanism, and through the relative motion between inner wall grinding machanism and the outer wall grinding machanism until inner wall grinding machanism and outer wall grinding machanism support respectively and press on the inside and outside wall of steel pipe, and polish the inside and outside wall of steel pipe end department through inner wall grinding machanism and outer wall grinding machanism, and.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides a steel pipe end grinding device for building which characterized in that includes: the polishing device comprises a shell, a plurality of inner wall polishing mechanisms arranged at intervals along the circumferential direction of the shell, and a plurality of outer wall polishing mechanisms arranged in one-to-one correspondence with the inner wall polishing mechanisms; wherein,

the shell is also internally provided with an inverted barrel body which is rotatably connected with the shell;

the inner wall polishing mechanisms are positioned in the shell and are connected to the inverted barrel body in a sliding manner along the radial direction of the inverted barrel body, and a telescopic structure is arranged between every two adjacent inner wall polishing mechanisms;

the outer wall grinding mechanism is arranged between the inner wall grinding mechanism corresponding to the outer wall grinding mechanism and the inner wall of the shell, and the outer wall grinding mechanism is connected to the inverted barrel body in a sliding manner along the radial direction of the inverted barrel body;

the corresponding inner wall polishing mechanism and the outer wall polishing mechanism are in transmission connection through the first transmission mechanism so as to enable the inner wall polishing mechanism and the outer wall polishing mechanism to move in the radial direction of the shell or back to back;

the part of the inner wall polishing mechanism, which is positioned below the inverted barrel body, is connected with a pedal mechanism positioned outside the shell, the pedal mechanism is connected with the inner wall polishing mechanism through a second transmission mechanism, and the second transmission mechanism is used for driving the inner wall polishing mechanism to move towards the direction close to or far away from the axis of the inverted barrel body; and a first reset mechanism is arranged on the pedal mechanism.

2. The building steel pipe end grinding device as claimed in claim 1, wherein said inner wall grinding mechanism comprises: the first connecting rod, the first dovetail block, the first V-shaped plate and the second V-shaped plate; wherein,

a first dovetail groove is formed in the top plate of the inverted barrel body along the radial direction of the top plate, the first dovetail block is connected in the first dovetail groove in a sliding mode along the length direction of the first dovetail groove, the first connecting rod is vertically arranged, the top end of the first connecting rod is connected to the bottom wall of the first dovetail block, the first bending part of the first V-shaped plate is vertically arranged and connected to the top wall of the first dovetail block, the second bending part of the first V-shaped plate is obliquely arranged from bottom to top in a direction close to the axis of the shell, and an inner wall polishing layer is arranged on the side wall, back to the axis of the shell, of the first V-shaped plate and used for polishing the inner wall of the steel pipe;

the third bent part of the second V-shaped plate is vertically arranged and connected to the top end of the second bent part, the fourth bent part of the second V-shaped plate is obliquely arranged from bottom to top in the direction away from the axis of the shell, and a baffle is arranged at the top end of the fourth bent part and used for guiding the steel pipe.

3. The building steel pipe end grinding device according to claim 1 or 2, wherein the outer wall grinding mechanism comprises: the second connecting rod, the second dovetail block, the L-shaped rod and the U-shaped rod; wherein,

a second dovetail groove is formed in the top wall of the inverted barrel body along the radial direction of the inverted barrel body, the second dovetail block is connected in the second dovetail groove in a sliding mode along the length direction of the second dovetail groove, the second connecting rod is vertically arranged, the top end of the second connecting rod is connected to the bottom wall of the second dovetail block, and the L-shaped rod is arranged and connected to the top wall of the second dovetail block;

the U-shaped rod is arranged and connected to the L-shaped rod, an opening of the U-shaped rod faces the axis of the shell, a first square block is arranged at the end part of a lower connecting part of the U-shaped rod, and an outer wall polishing layer is arranged on the wall face, facing the axis of the shell, of the first square block and used for polishing the outer wall of the steel pipe; the end part of the upper connecting part of the U-shaped rod is provided with a second square block for guiding the steel pipe.

4. The building steel pipe end grinding device as claimed in claim 1 or 2, wherein the second transmission mechanism comprises: a third dovetail block, a transverse connecting rod and a hinge rod; wherein,

a third dovetail groove is formed in the side wall of the shell along the axial direction of the shell, a third dovetail block is connected to the third dovetail groove in a sliding mode along the length direction of the third dovetail groove, and the third dovetail block is connected with the pedal mechanism to move up and down along with the pedal mechanism;

the one end of horizontal connecting rod is connected on the third dovetail block, the other end with the bottom of hinge bar is connected, the horizontal connecting rod is used for following the third dovetail block is followed drive when the length direction of third dovetail reciprocates the bottom of hinge bar removes, so that the hinge bar rotates, make with inner wall grinding machanism orientation that the hinge bar is connected is close to or keeps away from the direction of casing axis removes.

5. The building steel pipe end grinding device as claimed in claim 4, wherein,

a support rod is further arranged in the shell and used for supporting the driving mechanism;

a sliding body is sleeved on the outer wall of the supporting rod in a sliding manner along the axial direction of the supporting rod and is connected with the end part of the transverse connecting rod so as to move up and down along with the transverse connecting rod;

the outer wall of the sliding body is provided with an annular groove along the circumferential direction of the sliding body, the inner portion of the annular groove is slidably provided with sliding blocks which are arranged in a clamping mode and correspond to the hinge rods one to one, the bottom ends of the hinge rods are hinged to the sliding blocks, and the sliding blocks drive the bottom ends of the hinge rods to move up and down.

6. The building steel pipe end grinding device according to claim 1 or 2, wherein the first transmission mechanism comprises: a first rack, a second rack and a gear; wherein,

the teeth of the first rack and the second rack are arranged oppositely, and the gear is arranged between the first rack and the second rack and is respectively meshed with the first rack and the second rack, so that the moving directions of the first rack and the second rack are opposite.

7. The building steel pipe end grinding device as claimed in claim 1 or 2, wherein,

the inverted barrel body is connected with a driving mechanism and used for driving the inverted barrel body to rotate so as to drive the inner wall polishing mechanism and the outer wall polishing mechanism to rotate and polish the whole circumference of the inner wall and the outer wall of the end of the steel pipe.

8. The building steel pipe end grinding device as claimed in claim 1 or 2, wherein,

the shell is further provided with an air blower for blowing air above the inverted barrel body, so that scraps polished by the steel pipes fall into the bottom of the shell from a groove formed in a top plate of the inverted barrel body, and collection of the scraps is achieved.

9. The building steel pipe end grinding device as claimed in claim 1 or 2, wherein,

the steel pipe grinding device is characterized in that a first ball is arranged at the top end of the inner wall grinding mechanism, a second ball is arranged at the top end of the outer wall grinding mechanism, and the first ball and the second ball are respectively used for jacking the inner wall and the outer wall of the steel pipe so as to limit the steel pipe and guide the steel pipe to move along the axial direction of the shell.

10. The building steel pipe end grinding device as claimed in claim 1 or 2, wherein,

the part of the inner wall polishing mechanism, which is positioned above the inverted barrel body, is hinged with a supporting mechanism for supporting the steel pipe;

and a second reset mechanism is arranged between the supporting mechanism and the inner wall polishing mechanism.

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