A steel pipe end grinding device for construction

Abstract

The present invention provides a grinding device for the end of a steel pipe for construction, the grinding device comprising: a shell, a plurality of inner wall grinding mechanisms arranged at intervals along the circumference of the shell, and a plurality of outer wall grinding mechanisms arranged one by one corresponding to the inner wall grinding mechanisms; wherein an inverted barrel body is arranged in the shell, which is rotatably connected to the shell; the inner wall grinding mechanism is slidably connected to the inverted barrel body along the radial direction of the inverted barrel body; the outer wall grinding mechanism is slidably connected to the inverted barrel body along the radial direction of the inverted barrel body; the corresponding inner wall grinding mechanism and the outer wall grinding mechanism are connected by a first transmission mechanism; the part of the inner wall grinding mechanism located below the inverted barrel body is connected to a pedal mechanism located outside the shell, the pedal mechanism is connected to the inner wall grinding mechanism by a second transmission mechanism, and a first reset mechanism is arranged on the pedal mechanism. The grinding device can grind steel pipes of different diameters, improve the quality of finished products, and meet the needs of construction use.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a steel pipe end grinding device for construction. Background Art

[0002] A steel pipe is a steel material with a hollow cross-section and a length much greater than its diameter or circumference. It is divided into round, square, rectangular and special-shaped steel pipes according to the cross-sectional shape; it is divided into carbon structural steel pipes, low alloy structural steel pipes, alloy steel pipes and composite steel pipes according to the material; it is divided into seamless steel pipes and welded steel pipes according to the production process. Seamless steel pipes are further divided into hot-rolled and cold-rolled types, and welded steel pipes are further divided into straight-seam welded steel pipes and spiral-seam welded steel pipes. Traditional steel pipe port grinding devices have a complex structure, a single function, and poor practicality. They can only perform port grinding on specific models. When it is necessary to grind different models or special-shaped steel pipes, the grinding device or grinding tool needs to be replaced, which is complicated to operate and has low work efficiency. In addition, they cannot perform good grinding on steel pipes of different models and cannot meet the needs of construction use. Summary of the invention

[0003] In view of this, the present invention proposes a steel pipe end grinding device for construction, aiming to solve the problem that the existing grinding device can only grind the end of a specific model.

[0004] The present invention proposes a grinding device for the end of a steel pipe for construction, which comprises: a shell, a plurality of inner wall grinding mechanisms arranged at intervals along the circumference of the shell, and a plurality of outer wall grinding mechanisms arranged one by one corresponding to the inner wall grinding mechanisms; wherein an inverted barrel body is also provided in the shell, which is rotatably connected to the shell; the inner wall grinding mechanism is located in the shell and is slidably connected to the inverted barrel body along the radial direction of the inverted barrel body; the outer wall grinding mechanism is arranged between the corresponding inner wall grinding mechanism and the inner wall of the shell, and the outer wall grinding mechanism is slidably connected to the inverted barrel body along the radial direction of the inverted barrel body; the corresponding inner wall grinding mechanism and the outer wall grinding mechanism are transmission-connected by the first transmission mechanism so that the two can move toward or away from each other along the radial direction of the shell; the inner wall grinding mechanism is located below the inverted barrel body A part is connected to a pedal mechanism located outside the shell, and the pedal mechanism is connected to the inner wall grinding mechanism through a second transmission mechanism. The pedal mechanism is provided with a first reset mechanism. When the pedal mechanism moves downward, the second transmission mechanism is used to drive the inner wall grinding mechanism to move toward the axis close to the inverted cylinder body, so as to drive the outer wall grinding mechanism to move toward the axis away from the inverted barrel body, so that the steel pipe is placed between the inner wall grinding mechanism and the outer wall grinding mechanism; the second reset mechanism is used to reset the pedal mechanism upward, so as to drive the inner wall grinding mechanism to move toward the axis away from the inverted barrel body through the second transmission mechanism, and the outer wall grinding mechanism to move toward the axis close to the inverted barrel body, so that the inner wall grinding mechanism and the outer wall grinding mechanism are respectively pressed against the inner and outer walls of the steel pipe, and the inner and outer walls at the end of the steel pipe are polished.

[0005] Furthermore, in the above-mentioned construction steel pipe end grinding device, the inner wall grinding mechanism includes: a first connecting rod, a first dovetail block, a first V-shaped plate and a second V-shaped plate; wherein, a first dovetail groove is opened on the top plate of the inverted barrel body along its radial direction, the first dovetail block is slidably connected in the first dovetail groove along the length direction of the first dovetail groove, the first connecting rod is vertically arranged and the top end is connected to the bottom wall of the first dovetail block, the first bent portion of the first V-shaped plate is vertically arranged and connected to the top wall of the first dovetail block, the second bent portion of the first V-shaped plate is inclined from bottom to top in the direction close to the shell axis, and an inner wall grinding layer is provided on the side wall of the first V-shaped plate facing away from the shell axis for grinding the inner wall of the steel pipe; the third bent portion of the second V-shaped plate is vertically arranged and connected to the top end of the second bent portion, the fourth bent portion of the second V-shaped plate is inclined from bottom to top in the direction away from the shell axis, and a baffle is provided at the top end of the fourth bent portion for guiding the steel pipe.

[0006] Furthermore, in the above-mentioned construction steel pipe end grinding device, the outer wall grinding mechanism includes: a second connecting rod, a second dovetail block, an L-shaped rod and a U-shaped rod; wherein, a second dovetail groove is opened on the top wall of the inverted barrel body along its radial direction, 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 and the top end 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, and the opening of the U-shaped rod is arranged toward the axis of the shell, the end of the lower connecting part of the U-shaped rod is provided with a first square block, and the wall surface of the first square block facing the axis of the shell is provided with an outer wall grinding layer for grinding the outer wall of the steel pipe; the end of the upper connecting part of the U-shaped rod is provided with a second square block for guiding the steel pipe.

[0007] Furthermore, in the above-mentioned construction steel pipe end grinding device, the second transmission mechanism includes: a third dovetail block, a transverse connecting rod, and an articulated rod; wherein a third dovetail groove is provided on the side wall of the shell along the axial direction of the shell, the third dovetail block is slidably connected in the third dovetail groove along the length direction of the third dovetail groove, and the third dovetail block is connected to the pedal mechanism to move up and down with the pedal mechanism; one end of the transverse connecting rod is connected to the third dovetail block, and the other end is connected to the bottom end of the articulated rod, and the transverse connecting rod is used to drive the bottom end of the articulated rod to move when the third dovetail block moves up and down along the length direction of the third dovetail groove, so that the articulated rod rotates, so that the inner wall grinding mechanism connected to the articulated rod moves in a direction close to or away from the axis of the shell.

[0008] Furthermore, in the above-mentioned construction steel pipe end grinding device, a support rod is also provided in the shell to support the driving mechanism; a sliding body is slidably mounted on the outer wall of the support rod along the axial direction of the support rod, and is connected to the end of the transverse connecting rod so as to move up and down with the transverse connecting rod; an annular groove is provided on the outer wall of the sliding body along its circumference, and a sliding block corresponding to the hinge rod is slidably clamped in the annular groove, and the bottom end of the hinge rod is hinged to the sliding block, and the sliding block drives the bottom end of the hinge rod to move up and down.

[0009] Furthermore, in the above-mentioned construction steel pipe end grinding device, the first transmission mechanism includes: a first rack, a second rack and a gear; wherein the teeth of the first rack and the second rack are arranged opposite to each other, and the gear is arranged between the first rack and the second rack and 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.

[0010] Furthermore, in the above-mentioned construction steel pipe end grinding device, the inverted barrel body is connected to a driving mechanism for driving the inverted barrel body to rotate, thereby driving the inner wall grinding mechanism and the outer wall grinding mechanism to rotate, so as to grind the inner and outer walls of the steel pipe end throughout the entire circumference.

[0011] Furthermore, in the above-mentioned construction steel pipe end grinding device, a blower is also provided on the shell for blowing air above the inverted barrel body, so that the waste chips from the grinding of the steel pipe fall into the bottom of the shell from the groove opened on the top plate of the inverted barrel body, thereby realizing the collection of the waste chips.

[0012] Furthermore, in the above-mentioned construction steel pipe end grinding device, a first ball is provided at the top end of the inner wall grinding mechanism, and a second ball is provided at the top end of the outer wall grinding mechanism, and the first ball and the second ball are respectively used to press on the inner and outer walls of the steel pipe to limit the steel pipe and guide the movement of the steel pipe along the axial direction of the shell.

[0013] Furthermore, in the above-mentioned construction steel pipe end grinding device, the part of the inner wall grinding mechanism located above the inverted barrel body is hinged with a supporting mechanism for supporting the steel pipe; a second reset mechanism is provided between the supporting mechanism and the inner wall grinding mechanism.

[0014] The present invention provides a steel pipe end grinding device for construction, in which the inner wall grinding mechanism and the outer wall grinding mechanism are connected by the first transmission mechanism, so that the inner wall grinding mechanism and the outer wall grinding mechanism move toward or away from each other along the radial direction of the shell, and then when the inner wall grinding mechanism and the outer wall grinding mechanism move away from each other to the maximum distance, the steel pipe is inserted between the inner wall grinding mechanism and the outer wall grinding mechanism, and the inner wall grinding mechanism and the outer wall grinding mechanism move toward each other until the inner wall grinding mechanism and the outer wall grinding mechanism are pressed against the inner and outer walls of the steel pipe respectively, and the inner and outer walls at the end of the steel pipe are ground by the inner wall grinding mechanism and the outer wall grinding mechanism, thereby realizing the grinding of steel pipes with different diameters, improving the quality of finished products, and meeting the needs of construction use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of the structure of the steel pipe end grinding device for construction provided by an embodiment of the present invention when it is placed in a steel pipe;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0019] Figure 4 This is a schematic structural diagram of the construction steel pipe end grinding device provided by an embodiment of the present invention at the start of grinding. DETAILED DESCRIPTION

[0020] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] See also Figures 1 to 4 , which shows the preferred structure of the grinding device for the end of a steel pipe for construction provided by an embodiment of the present invention. As shown in the figure, the grinding device comprises: a housing 1, a plurality of inner wall grinding mechanisms 2 arranged at intervals along the circumference of the housing 1, a plurality of outer wall grinding mechanisms 3 arranged one-to-one corresponding to the inner wall grinding mechanisms 2, an inverted barrel 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,

[0022] An inverted barrel body 4 is also provided in the shell 1, and is rotatably connected to the shell 1. Specifically, the inverted barrel body 4 is a cylindrical structure with one end open and a hollow interior, which is inverted in the shell 1 and 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 to drive the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 connected to the inverted barrel body 4 to rotate. The inner wall of the shell 1 is provided with an annular dovetail groove 101 along its circumference, and a number of fourth dovetail blocks 102 are arranged at intervals inside the inner wall. Each fourth dovetail block 102 is partially arranged in the annular dovetail groove 101, and the exposed part of each fourth dovetail block 102 is connected to the inverted barrel body 4, so that the fourth dovetail block 102 rotates synchronously with the inverted barrel body 4, so that the fourth dovetail block 102 can be guided by the annular dovetail groove 101, thereby ensuring the stability of the rotation of the inverted barrel body 4; wherein, the fourth dovetail block 102 can be at least two, or other numbers, and there is no limitation on it in this embodiment; the fourth dovetail block 102 and the inverted barrel body 4 can be fixedly connected so that the two rotate synchronously. wherein, a mounting through hole 103 is opened on the top wall of the shell 1, so that the steel pipe 10 can be inserted from the mounting through hole 103 to between the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3. In this embodiment, the shell 1 is vertically arranged (relative to Figure 1 As for the position shown in the figure), the axial direction of the housing 1 is the vertical direction.

[0023] The inner wall grinding mechanism 2 is located in the housing 1 and along the radial direction of the inverted barrel 4 (such as Figure 1 Specifically, the inner wall grinding mechanism 2 is provided through the top plate of the inverted barrel body 4 and is slidably connected to the inverted barrel body 4 along the radial direction of the inverted barrel body 4, so that the inner wall grinding mechanism 2 moves toward or away from the axis of the inverted barrel body 4 (such as Figure 1 The inner wall grinding mechanism 2 on the left side shown moves to the right or to the left). Each inner wall grinding mechanism 2 can be arranged at intervals along the circumference of the inverted barrel body 4. Preferably, each inner wall grinding mechanism 2 is symmetrically arranged about the axis of the inverted barrel body 4. In this embodiment, two inner wall grinding mechanisms 2 are used as an example for explanation. The distance between the two inner wall grinding mechanisms 2 and the axis of the inverted barrel body 4 is the same, and they are symmetrically arranged about the axis of the inverted barrel body 4. Among them, a telescopic structure can be provided between adjacent inner wall grinding mechanisms 2.

[0024] The outer wall grinding mechanism 3 is disposed between the corresponding inner wall grinding mechanism 2 and the inner wall of the shell 1, and the outer wall grinding mechanism 3 is slidably connected to the inverted barrel body 4 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 shell 1, and the outer wall grinding mechanism 3 is penetrated through the top plate of the inverted barrel body 4 and is slidably connected to the inverted barrel body 4 along the radial direction of the inverted barrel body 4, so that the outer wall grinding mechanism 3 moves toward or away from the axis of the inverted barrel body 4 (such as Figure 1 The outer wall grinding mechanism 3 on the left side as shown moves to the right or to the left). Each outer wall grinding mechanism 3 can be arranged at intervals along the circumference of the inverted barrel body 4. Preferably, each outer wall grinding mechanism 3 is arranged symmetrically about the axis of the inverted barrel body 4. In this embodiment, two outer wall grinding mechanisms 3 are used as an example for explanation. The distances between the two outer wall grinding mechanisms 3 and the axis of the inverted barrel body 4 are the same, and they are arranged symmetrically about the axis of the inverted barrel body 4.

[0025] The corresponding inner wall grinding mechanism 2 and outer wall grinding mechanism 3 are connected by the first transmission mechanism 5 so that the two can move toward or away from each other along the radial direction of the shell 1. Specifically, if the inner wall grinding mechanism 2 moves along the radial direction of the inverted barrel body 4 toward the direction close to the axis of the inverted barrel body 4, the first transmission mechanism 5 will act accordingly and drive the outer wall grinding mechanism 3 to move in the direction away from the axis of the inverted barrel body 4. Taking the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 on the left side as an example, when the inner wall grinding mechanism 2 on the left side moves to the right, the first transmission mechanism 5 will act accordingly and drive the outer wall grinding mechanism 3 on the left side to move to the left, so that the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 on the left side move in opposite directions. The movement principle of the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 on the right side is similar to that on the left side, and the distance between the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 on the right side also increases synchronously; at the same time, in this embodiment, two inner wall grinding mechanisms 2 and two outer wall grinding mechanisms 3 are used as examples for explanation, and there can also be multiple, which are not limited in this embodiment; the corresponding inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 can be arranged along the radial direction of the inverted barrel body 4, so as to realize the grinding of the steel pipe 10 along the radial movement of the inverted barrel body 4. Among them, the first transmission mechanism 5 can be arranged below the top plate of the inverted barrel body 4 to avoid interfering with the grinding of the steel pipe 10.

[0026] The part of the inner wall grinding mechanism 2 located below the inverted barrel body 4 is connected to a pedal mechanism 6 located outside the shell 1. The pedal mechanism 6 is connected to the inner wall grinding mechanism 2 through a second transmission mechanism 7. A first reset mechanism 8 is provided on the pedal mechanism 6. When the pedal mechanism 6 moves downward, the second transmission mechanism 7 is used to drive the inner wall grinding mechanism 2 to move toward the axis close to the inverted barrel body 4, and drive the outer wall grinding mechanism 3 to move toward the axis 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 grinding mechanism 2 and the outer wall grinding mechanism 3; the second reset mechanism 8 is used to reset the pedal mechanism 6 upward, so as to drive the inner wall grinding mechanism 2 to move toward the axis away from the inverted barrel body 4 through the second transmission mechanism 7, and the outer wall grinding mechanism 3 moves toward the direction close to the axis of the inverted barrel body 4, so that the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 are respectively pressed against the inner and outer walls of the steel pipe 10, and the inner and outer walls at the end of the steel pipe 10 are polished. Specifically, the pedal mechanism 6 is at least partially arranged outside the shell 1, so that the operator can step on and release the pedal mechanism 6, thereby realizing the up and down movement of the pedal mechanism 6 along the axial direction of the shell 1; a first reset mechanism 8 can be provided between the pedal mechanism 6 and the shell 1, so that when the operator releases the pedal mechanism 6, the reset mechanism 8 is actuated to drive the pedal mechanism 6 to move upward to the original position; the second transmission mechanism 7 moves with the pedal mechanism 6, driving the inner wall grinding mechanism 2 to move toward or away from the axis, thereby realizing the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 to move toward or away from the axis, so that in the opposite directions, the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 can move toward or away from the axis. After the movement, the steel pipe 10 is inserted from the installation through hole 103 between the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3, and then the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 move toward each other, so that the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 are pressed against the inner and outer walls of the steel pipe 10 respectively, and the inner and outer walls at the end of the steel pipe 10 are ground. After the burrs on the inner or outer wall of the steel pipe 10 are removed after grinding, the steel pipe 10 moves downward 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. Among them, the pedal mechanism 6 can be one or more, and there is no limitation on it in this embodiment; the first reset mechanism 8 can be a reset spring and is set one-to-one with the pedal mechanism 6.

[0027] In order to facilitate the downward movement of the steel pipe 10, preferably, the top end (relative to the top end) of the inner wall grinding mechanism 2 is Figure 1The outer wall grinding mechanism 3 is provided with a first ball 27, and the top 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 to press on the inner and outer walls of the steel pipe 10 to limit the steel pipe 10 to prevent the steel pipe 10 from moving radially along the inverted barrel body 4. The first ball 27 and the second ball 31 can roll along the inner and outer walls of the steel pipe to guide the axial movement of the steel pipe 10 along the shell 1. The setting of the first ball 27 and the second ball 31 can reduce friction.

[0028] In order to facilitate the grinding of the inner and outer walls of the end of the steel pipe 10, preferably, a driving mechanism 9 is connected to the inverted barrel body 4 to drive the inverted barrel body 4 to rotate, so as to drive the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 to rotate, and grind the inner and outer walls of the end of the steel pipe 10. Specifically, the driving mechanism 9 can be a driving motor, and its output end can be connected to the bottom wall of the top plate of the inverted barrel body 4 to drive the inverted barrel body 4 to rotate around the axis of the inverted barrel body 4, and then drive the inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 set on the inverted barrel body 4 to rotate. Among them, the driving mechanism 9 can be connected to a controller to control the action of the driving mechanism 9 through the controller.

[0029] In order to facilitate the fixation of the steel pipe 10 before grinding in the initial stage, preferably, the inner wall grinding mechanism 2 is located above the inverted barrel 4 (relative to Figure 1 The support mechanism 11 is hingedly connected to the inner wall grinding mechanism 2 to support the steel pipe 10; and a second reset mechanism 12 is provided between the support mechanism 11 and the inner wall grinding mechanism 2. Specifically, the support mechanism 11 can be arranged one by one with the inner wall grinding mechanism 2, and the fixed end of the support mechanism 11 (such as Figure 1 The right end of the left support mechanism 11 shown in the figure is hinged on the inner wall grinding mechanism 2, and the end or middle part of the support mechanism 11 away from the fixed end is connected to the inner wall grinding mechanism 2 through the second reset mechanism 12. The connection point of the second reset mechanism 12 on the inner wall grinding mechanism 2 is located above the connection point of the fixed end of the support mechanism 11 on the inner wall grinding mechanism 2, so that the second reset mechanism 12 stretches the support mechanism 11 to ensure the stability of the support mechanism 11 supporting the steel pipe 10. When in the position, the support mechanism 11 is stretched by the second reset mechanism 12, and the support mechanism 11 is horizontally arranged to support the steel pipe 10, as shown in FIG. Figure 1 As shown; when the steel pipe 10 moves downward under the action of the downward driving force, the support mechanism 11 rotates clockwise or counterclockwise around its fixed end to rotate into the steel pipe 10, so that the steel pipe 10 moves downward to the inner wall grinding layer 25 of the inner wall grinding mechanism 2, as shown Figure 4After the steel pipe 10 is polished and taken out of the housing 1, the support mechanism 11 is reset to a horizontal position under the action of the second reset mechanism 12. The support mechanism 11 may be a horizontal plate or a horizontal bar structure, and the second reset mechanism 12 may be a reset spring.

[0030] The shell 1 is also provided with a blower 13, which is used to blow air above the inverted barrel body 4, so that the waste chips from the grinding of the steel pipe 10 fall from the grooves provided on the top plate of the inverted barrel body 4 to the bottom of the shell 1, so that the waste chips are collected. Specifically, the inner wall grinding mechanism 2 and the outer wall grinding mechanism setting 3 are both penetrated through the top plate of the inverted barrel body 4, so the top plate of the inverted barrel body 4 must be provided with a plurality of grooves corresponding to the inner wall grinding mechanism 2 and the outer wall grinding mechanism setting 3, and the inner wall grinding mechanism 2 and the outer wall grinding mechanism setting 3 can move along the radial direction of the inverted barrel body 4, so the waste chips from the grinding of the steel pipe 10 can fall from the grooves provided on the top plate of the inverted barrel body 4 to the bottom of the shell 1; 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 wind, so that the waste chips are collected. The blower 13 can also be electrically connected to the controller, so that the blower 13 can be controlled by the controller.

[0031] Continue to see Figure 1 and Figure 4 The housing 1 may include a first barrel body 104 and a second barrel body 105 stacked up and interpenetrating with each other. The top wall of the second barrel body 105 located at the bottom is provided with a first through hole 1051, so that the first barrel body 104 and the second barrel body 105 are interpenetrating with each other, and the top wall of the second barrel body 105 is prevented from interfering with the internal structure; the installation through hole 103 is provided on the top wall of the first barrel body 104 located at the top, so that the steel pipe 10 is inserted from the top wall of the first barrel body 104 into the first barrel body 104, thereby improving the guidance and grinding of the steel pipe 10 by the relevant structure located in the first barrel body 104. Among them, the inverted barrel body 4 is arranged in the first barrel body 104, so the annular dovetail groove 101 is provided on the inner wall of the first barrel body 104. In order to facilitate the support and fixation of the driving mechanism 9, preferably, a support rod 106 is provided in the housing 1 to support the driving mechanism 9; in this embodiment, the support rod 106 is arranged in the second barrel 105, and the top end is penetrated 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 facilitate the support and fixation of the support rod 106, preferably, two oblique rods 107 are symmetrically provided in the second barrel 105, the top ends of the two oblique rods 107 are fixedly connected, and the top ends of the two oblique rods 2 are also fixedly connected to the bottom ends of the support rod 106; wherein, the cross section of the support rod 106 can be square, or other structures such as circular, which is not limited in this embodiment.

[0032] Continue to see Figures 1 to 4The inner wall grinding 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; wherein a first dovetail groove 41 is provided on the top plate of the inverted barrel body 4 along its radial direction, and the first dovetail block 22 is provided along the length direction of the first dovetail groove 41 (such as Figure 1 The first connecting rod 21 is vertically arranged and the top end is connected to the bottom wall of the first dovetail block 22. The first bending portion 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 bending portion 232 of the first V-shaped plate 23 is inclined from bottom to top in the direction close to the axis of the shell 1, and the side wall of the first V-shaped plate 23 facing away from the axis of the shell 1 is provided with an inner wall polishing layer 25 for polishing the inner wall of the steel pipe 10; the third bending portion 241 of the second V-shaped plate 24 is vertically arranged and connected to the top end of the second bending portion 232, and the fourth bending portion 242 of the second V-shaped plate 24 is inclined from bottom to top in the direction away from the axis of the shell 1. The top end of the fourth bending portion 242 may be provided with a baffle 28 for guiding the steel pipe 10.

[0033] Specifically, taking two inner wall grinding mechanisms 2 as an example, two first dovetail grooves 41 are symmetrically opened on the top plate of the inverted barrel body 4, for respectively placing the 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, and the first dovetail block 22 is slidably arranged in the first dovetail groove 41, and the top wall of the first dovetail block 22 is fixedly connected to the bottom end of the first V-shaped plate 23, and the bottom wall of the inverted barrel body 4 is symmetrically opened with two first through holes. The groove 42 is connected with the first dovetail groove 41, and the bottom surface of the first dovetail block 22 is fixedly connected with the first connecting rod 21, and the first connecting rod 21 passes through the first through groove 42 and the first through hole 1051 in turn and penetrates into the second barrel 105, and the bottom end of the first connecting rod 21 is hinged with the hinge rod 73 of the second transmission mechanism 7; and the first connecting rod 21 is also fixedly connected with the first rack 51 of the first transmission mechanism 5 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 can 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 arranged at the top of the fourth bending portion 242, and a rolling cavity is formed between the fourth bending portion 242 and the baffle 28, so that the first ball 27 can be partially rotatably stuck in the rolling cavity, and a part of the first ball 27 passes through the baffle 28 and is arranged on the other side of the baffle 28; and the first ball 27 and the side wall of the inner wall polishing layer 25 arranged on the side wall of the first bending portion 231 are in the same vertical plane. The top of the baffle 28 can extend to the outside through the installation through hole 103 to provide preliminary guidance for the steel pipe 10. The support mechanism 11 can be hinged on the third bending portion 241, and the top of the second reset mechanism 12 can be connected to the fourth bending portion 242. The angle between the first bending portion 231 and the second bending portion 232 can be 135°. The first bending portion 231 and the first dovetail block 22 can be fixed by welding.

[0034] Continue to see Figures 1 to 4The 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; wherein a second dovetail groove 43 is opened on the top wall of the inverted barrel body 4 along its radial direction, the second dovetail block 33 is slidably connected to the second dovetail groove 43 along the length direction of the second dovetail groove 43, the second connecting rod 32 is vertically arranged and the top end is connected to the bottom wall of the second dovetail block 33, the L-shaped rod 34 is arranged and connected to the top wall of the second dovetail block 33 On the upper side, a U-shaped rod 35 is arranged and connected to the L-shaped rod 34, and the opening of the U-shaped rod 34 is arranged toward the axis of the shell 1, and a first square block 36 is provided at the end of the lower connecting portion 351 of the U-shaped rod 35, and an outer wall polishing layer 37 is provided on the wall surface of the first square block 36 facing the axis of the shell 1, for polishing the outer wall of the steel pipe 10; a second square block 38 is provided at the end of the upper connecting portion 352 of the U-shaped rod 35 for guiding the steel pipe 10.

[0035] Specifically, taking the two outer wall grinding mechanisms 3 as an example, two second dovetail grooves 43 are symmetrically opened on the top plate of the inverted barrel body 4, for respectively placing the two second dovetail blocks 33 of the two outer wall grinding mechanisms 3; the length direction of the second dovetail groove 43 is arranged along the radial direction of the inverted barrel body 4, and the second dovetail block 33 is slidingly arranged in the second dovetail groove 43, and the top surface of the second dovetail block 33 is fixedly connected to the bottom surface of the L-shaped rod 34 vertical rod; the L-shaped rod 34 cross rod is fixedly connected with a U-shaped rod 35, and the opening of the U-shaped rod 35 faces the axis of the shell 1, that is, the openings of the two U-shaped rods 35 are arranged opposite to each other; in this embodiment, the second ball 31 is partially embedded in the second square block 38, and a second baffle may be provided on the side wall of the second square block 38 to partially embed the second ball 31 into the second square block 38, the second ball 31 is rotatably connected to the second baffle, and the side wall of the second ball 31 and the outer wall grinding layer 37 are in the same vertical plane. Two second through grooves 44 are symmetrically opened on the bottom wall of the inverted barrel body 4, which are connected to the second dovetail groove 43, and the bottom surface of the second dovetail block 33 is fixedly connected to the second connecting rod 32; the second connecting rod 32 passes through the second through grooves 44 in turn and penetrates into the inverted barrel body 4, and the bottom end of the second connecting rod 32 is fixedly connected to 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 can be driven by the second rack 52 to move synchronously with the second rack 52.

[0036] Continue to see Figures 1 to 4The first transmission mechanism 5 includes: a first rack 51, a second rack 52 and a gear 53; wherein the teeth of the first rack 51 and the second rack 52 are arranged oppositely, and 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 meshes with the first rack 51 and the second rack 52 respectively, so that the movement directions of the first rack 51 and the second rack 52 are opposite, so that the corresponding inner wall grinding mechanism 2 and the outer wall grinding mechanism 3 move toward or away from each other. Specifically, the gear 53 is rotatably connected to the inverted barrel body 4 through the rotating shaft 54, that is, the rotating shaft 54 ​​is rotatably connected to the rotating shaft 54, and the gear 53 can be fixedly sleeved on the rotating shaft 54.

[0037] Continue to see Figures 1 to 4 , the second transmission mechanism 7: a third dovetail block 71, a horizontal connecting rod 72, and a hinge rod 73; wherein a third dovetail groove 108 is provided on the side wall of the housing 1 along the axial direction of the housing 1, and the third dovetail block 71 is provided along the length direction of the third dovetail groove 108 (such as Figure 1 The third dovetail block 71 is connected to the pedal mechanism 6 so as to move up and down 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 hinged rod 73. The transverse connecting rod 72 is used to drive the bottom end of the hinged 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 hinged rod 73 rotates, so that the inner wall grinding mechanism 2 connected to the hinged rod 73 moves toward or away from the axis of the shell 1.

[0038] Specifically, in this embodiment, two pedal mechanisms 6 are taken as examples for explanation, each of which is connected to the inner wall grinding mechanism 2 through a second transmission mechanism 7, that is, there are two second transmission mechanisms 7; the inner wall of the second barrel body 105 is symmetrically provided with two third dovetail grooves 108, and the side wall of the second barrel body 105 is symmetrically provided with two third through grooves 109, and the third through grooves 109 are communicated with the third dovetail groove 108; a third dovetail block 71 is slidably provided in the third dovetail groove 108, and the third dovetail block 71 is fixedly connected to the end of the horizontal connecting rod 72, and the third dovetail block 71 is also connected to the pedal mechanism 6 passing through the third through groove 109, so as to move up and down in the third dovetail groove 108 with the pedal mechanism 6; the first reset mechanism 8 is located in the third dovetail groove 108 and below the third dovetail block 71, and the first reset mechanism 8 can be a compression spring and its two ends are respectively fixedly connected to the second barrel body 105 and the third dovetail block 71. In order to improve the stability of the vertical movement of the horizontal connecting rod 72, preferably, the outer wall of the support rod 106 is provided along the axial direction of the support rod 106 (such as Figure 1The sliding body 74 is slidably sleeved on the support rod 106 (in the vertical direction shown in the figure), and is connected to the end of the horizontal connecting rod 72 to move up and down with the horizontal connecting rod 72; the outer wall of the sliding body 74 is provided with an annular groove 741 along its circumference, and a slider 75 corresponding to the hinge rod 73 is slidably clamped in the annular groove 741, and the bottom end of the hinge rod 73 is hinged on the slider 75, and the slider 75 drives the bottom end of the hinge rod 74 to move up and down. Among them, the sliding body 74 can be a cylindrical structure and fits and slides on the support rod 106, and the slider 75 is partially fit and slides in the annular groove 741, and the shape of the slider 75 can be dovetail.

[0039] The working process of the grinding device:

[0040] First, when the end of the steel pipe needs to be polished, the polishing device is connected to the power supply, and the pedal mechanism 6 is manually stepped on. The pedal mechanism 6 drives the third dovetail block 71 to move downward, and the third dovetail block 71 drives the horizontal connecting rod 72 to move downward, and the horizontal connecting rod 72 drives the sliding body 74 to move downward, and the sliding body 74 drives the slider 75 to move downward, and the slider 75 drives the bottom end of the hinged rod 73 to move downward, and the two hinged rods 73 drive the two first connecting rods 21 to move toward each other, that is, both move toward the axis of the inverted barrel body 4, the first connecting rod 21 drives the first dovetail block 22 to move toward each other, and the first dovetail block 22 drives the two first V-shaped plates 23 to move toward each other, and the first V-shaped plate 23 drives the inner wall polishing layer 25 and the second V-shaped plate 24 to move toward the inverted barrel body 4. The axis moves, and the second V-shaped plate 24 drives the first balls 27 to move toward the axis of the inverted barrel body 4, so that the two inner wall polishing layers 25 and the two first balls 27 move toward each other; at the same time, the first connecting rod 21 drives the first rack 51 to move toward the axis of the inverted barrel body 4, the first rack 51 drives the gear 53 to rotate, and the gear 53 drives the second rack 52 to move in the direction away from the axis of the inverted barrel body 4, and drives the second connecting rod 32 to move in 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 in the direction away from the axis of the inverted barrel body 4, so that the U-shaped rod 35 and the outer wall polishing layer 37 and the second balls 31 on the U-shaped rod 35 move away from each other;

[0041] Then, the steel pipe 10 to be polished is inserted into the top installation through hole 103, and the bottom end of the steel pipe 10 is fitted with the top surface of the support mechanism 11;

[0042] Then, the pedal mechanism 6 is released, and the first reset mechanism 8 is compressed to push the third dovetail block 71 to move upward, and the third dovetail block 71 indirectly drives the two first V-shaped plates 23 to move away from each other and the two L-shaped rods 34 to move toward each other, so that the first ball 27 stops moving when it moves to fit the inner wall of the steel pipe 10. Since the first ball 27 and the inner wall polishing layer 25 are in the same vertical plane, the inner wall polishing layer 25 can fully polish the inner wall of the steel pipe, thereby indirectly improving the quality of the polished product; at the same time, the L-shaped rod 34 indirectly drives the second ball 31 to stop moving when it fits the outer wall of the steel pipe 10, and the second ball 31 and the outer wall polishing layer 37 are in the same vertical plane, thereby facilitating the subsequent full polishing of the outer wall of the steel pipe 10;

[0043] Then, the controller is operated to start the driving mechanism 9 and the blower 13 to work, and the steel pipe 10 is pressed downward, so that the steel pipe 10 causes the supporting mechanism 11 to rotate around its fixed end and be located inside the steel pipe 10, and the supporting mechanism 11 will pull the second reset mechanism 12, so that the steel pipe 10 can be lowered to the inner wall polishing layer 25;

[0044] 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 grinding layer 25 to rotate, thereby achieving full grinding of the inner wall of the steel pipe 10 (the first connecting rod 21 drives the hinged rod 73 to rotate, and the hinged rod 73 drives the slider 75 to rotate in the annular groove 741); at the same time, 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, and the first square block 36 drives the outer wall grinding The layer 37 rotates, thereby fully grinding the outer wall of the steel pipe 10. When the steel pipe 10 cannot be lowered, it proves that the bottom end of the steel pipe is in contact with the top surface of the inverted barrel body 4, which indirectly indicates that the inner wall grinding layer 25 and the outer wall grinding layer 37 have fully ground the inner and outer walls of the steel pipe 10; the blower 13 blows air into the first barrel body 104 while the driving mechanism 9 is in motion, so that the grinding waste chips fall into the second barrel body 105 through the first dovetail groove 41, the first through groove 42, the second dovetail groove 43 and the second through groove 44 opened on the top surface of the inverted barrel body 4 through the first through hole 1051, thereby indirectly collecting the waste chips, preventing them from flying around, and improving work efficiency;

[0045] Finally, the controller is operated to stop the driving mechanism 9 and the polished steel pipe is taken out; subsequently, other steel pipes 10 can be polished according to the above operation, and the waste chips falling into the second barrel 105 are intermittently cleaned. The setting of the first ball 27 and the second ball 31 facilitates the falling of the steel pipe 10, indirectly improving work efficiency and reducing labor intensity.

[0046] In summary, in the construction steel pipe end grinding device provided by the present embodiment, the inner wall grinding mechanism and the outer wall grinding mechanism are connected by a first transmission mechanism, so that the inner wall grinding mechanism and the outer wall grinding mechanism can move toward or away from each other along the radial direction of the shell, and then when the inner wall grinding mechanism and the outer wall grinding mechanism move away from each other to the maximum distance, the steel pipe is inserted between the inner wall grinding mechanism and the outer wall grinding mechanism, and the inner wall grinding mechanism and the outer wall grinding mechanism move toward each other until the inner wall grinding mechanism and the outer wall grinding mechanism are pressed against the inner and outer walls of the steel pipe respectively, and the inner and outer walls at the end of the steel pipe are ground by the inner wall grinding mechanism and the outer wall grinding mechanism, thereby realizing the grinding of steel pipes with different diameters, and improving the quality of finished products to meet the needs of construction use.

[0047] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A construction steel pipe end grinding device, characterized in that: include: A shell, a plurality of inner wall grinding mechanisms arranged at intervals along the circumference of the shell, and a plurality of outer wall grinding mechanisms arranged one-to-one corresponding to the inner wall grinding mechanisms; wherein, An inverted barrel is also provided in the shell and is rotatably connected to the shell; The inner wall grinding mechanism is located in the shell and is slidably connected to the inverted barrel body along the radial direction of the inverted barrel body, and a telescopic structure is provided between adjacent inner wall grinding mechanisms; The outer wall grinding mechanism is arranged between the corresponding inner wall grinding mechanism and the inner wall of the shell, and the outer wall grinding mechanism is slidably connected to the inverted barrel body along the radial direction of the inverted barrel body; The corresponding inner wall grinding mechanism and the outer wall grinding mechanism are connected to each other through a first transmission mechanism so that the two can move toward or away from each other along the radial direction of the shell; The part of the inner wall grinding mechanism located below the inverted barrel body is connected to a pedal mechanism located outside the shell body, and the pedal mechanism is connected to the inner wall grinding mechanism through a second transmission mechanism, and a first reset mechanism is provided on the pedal mechanism. When the pedal mechanism moves downward, the second transmission mechanism is used to drive the inner wall grinding mechanism to move toward the axis close to the inverted barrel body, so as to drive the outer wall grinding mechanism to move toward the axis away from the inverted barrel body, so that the steel pipe is placed between the inner wall grinding mechanism and the outer wall grinding mechanism; the first reset mechanism is used to reset the pedal mechanism upward, so as to drive the inner wall grinding mechanism to move toward the axis away from the inverted barrel body through the second transmission mechanism, and the outer wall grinding mechanism to move toward the axis close to the inverted barrel body, so that the inner wall grinding mechanism and the outer wall grinding mechanism are respectively pressed against the inner and outer walls of the steel pipe, and the inner and outer walls at the end of the steel pipe are polished; the inner wall grinding mechanism comprises: a first connecting rod, a first dovetail block, a first V-shaped plate and a second V-shaped plate; wherein, A first dovetail groove is provided on the top plate of the inverted barrel body along its radial direction, the first dovetail block is slidably connected in the first dovetail groove along the length direction of the first dovetail groove, the first connecting rod is vertically arranged and the top end is connected to the bottom wall of the first dovetail block, the first bent portion of the first V-shaped plate is vertically arranged and connected to the top wall of the first dovetail block, the second bent portion of the first V-shaped plate is inclined from bottom to top in a direction close to the axis of the shell, and an inner wall grinding layer is provided on the side wall of the first V-shaped plate facing away from the axis of the shell, so as to grind the inner wall of the steel pipe; The third bending portion of the second V-shaped plate is vertically arranged and connected to the top of the second bending portion, the fourth bending portion of the second V-shaped plate is inclined from bottom to top in a direction away from the axis of the shell, and a baffle is provided at the top of the fourth bending portion to guide the steel pipe; The outer wall grinding mechanism includes: a second connecting rod, a second dovetail block, an L-shaped rod and a U-shaped rod; wherein, A second dovetail groove is provided on the top wall of the inverted barrel along its radial direction, 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 and the top end 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, and the opening of the U-shaped rod is arranged toward the axis of the shell, a first square block is arranged at the end of the lower connecting portion of the U-shaped rod, and an outer wall grinding layer is arranged on the wall surface of the first square block facing the axis of the shell, so as to grind the outer wall of the steel pipe; a second square block is arranged at the end of the upper connecting portion of the U-shaped rod, so as to guide the steel pipe; The second transmission mechanism includes: a third dovetail block, a horizontal connecting rod, and a hinge rod; wherein, A third dovetail groove is provided on the side wall of the housing along the axial direction of the housing, the third dovetail block is slidably connected in the third dovetail groove along the length direction of the third dovetail groove, and the third dovetail block is connected to the pedal mechanism to move up and down with the pedal mechanism; One end of the transverse connecting rod is connected to the third dovetail block, and the other end is connected to the bottom end of the hinged rod. The transverse connecting rod is used to drive the bottom end of the hinged rod to move when the third dovetail block moves up and down along the length direction of the third dovetail groove, so that the hinged rod rotates, so that the inner wall grinding mechanism connected to the hinged rod moves toward or away from the axis of the shell; A support rod is also provided in the housing to support the driving mechanism; A sliding body is slidably sleeved on the outer wall of the support rod along the axial direction of the support rod, and is connected to the end of the transverse connecting rod to move up and down with the transverse connecting rod; The outer wall of the sliding body is provided with an annular groove along its circumference, and a slider corresponding to the hinge rod is slidably clamped in the annular groove, and the bottom end of the hinge rod is hinged on the slider, and the slider drives the bottom end of the hinge rod to move up and down.

2. The construction steel pipe end grinding device according to claim 1, characterized in that: 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 opposite to each other, and the gear is arranged between the first rack and the second rack and meshes with the first rack and the second rack respectively, so that the moving directions of the first rack and the second rack are opposite.

3. The construction steel pipe end grinding device according to claim 1, characterized in that: The inverted barrel body is connected with a driving mechanism for driving the inverted barrel body to rotate, so as to drive the inner wall grinding mechanism and the outer wall grinding mechanism to rotate, so as to grind the inner and outer walls of the steel pipe end all around.

4. The construction steel pipe end grinding device according to claim 1, characterized in that: The shell is also provided with a blower for blowing air above the inverted barrel body, so that the waste chips from grinding the steel pipe fall into the bottom of the shell from the groove opened on the top plate of the inverted barrel body, thereby collecting the waste chips.

5. The construction steel pipe end grinding device according to claim 1, characterized in that: A first ball is provided at the top of the inner wall grinding mechanism, and a second ball is provided at the top of the outer wall grinding mechanism. The first ball and the second ball are respectively used to press on the inner and outer walls of the steel pipe to limit the steel pipe and guide the movement of the steel pipe along the axial direction of the shell.

6. The construction steel pipe end grinding device according to claim 1, characterized in that: The part of the inner wall grinding mechanism located above the inverted barrel body is hinged with a supporting mechanism for supporting the steel pipe; A second resetting mechanism is provided between the supporting mechanism and the inner wall grinding mechanism.

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