Steel pipe flush beveling device for electric power iron tower

Abstract

The utility model relates to the technical field of electric power iron tower production, in particular to a steel pipe flush beveling device for an electric power iron tower, which does not need to be adjusted according to the inner diameter of a steel pipe, and is large in adaptive steel pipe inner diameter range, high in practicability and high in working efficiency. Comprising a square tube, a plurality of telescopic arms, four pressing plates, a locking mechanism, four corner blocks, an end plate, two light rails, a mounting base, a bearing, two tool rests, two cutters and a driving mechanism, the two ends of the telescopic arms are rotationally connected with the square tube and the four pressing plates respectively, the four corner blocks are installed at the right ends of the four pressing plates respectively, the locking mechanism is connected with the telescopic arms in a limiting mode, and the end plate is connected with the end plate. The end plate is installed at the right end of the square pipe, the two light rails are installed on the end plate in a sliding mode respectively, the installation base is installed at the right ends of the two light rails, the bearing is installed on the right end face of the installation base, the two cutter rests are symmetrically installed on the outer ring of the bearing, and the two cutters are installed at the outer ends of the two cutter rests respectively. And the driving mechanism is mounted on the mounting seat and is in transmission connection with the two tool rests.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power tower production, especially to a steel pipe butt joint device for electric power tower. BACKGROUND

[0002] The electric power tower of steel pipe type is connected by steel pipes, and the two ends of the steel pipe are welded with flanges. When welding the flanges, the two ends of the steel pipe need to be butt jointed. The diameter of the steel pipe of the electric power tower is large, and the manual cutting method is used for the butt joint, which has high technical requirements and is easy to cause uneven butt joint. At present, the steel pipe beveler has replaced the manual butt joint. However, when the existing beveler fixes and positions the port of the steel pipe, it needs to be adjusted according to the inner diameter of the steel pipe, which is complex to operate. Moreover, the range of the beveler adjustment is small, which causes low practicability and low work efficiency. SUMMARY

[0003] To solve the above technical problems, the utility model provides a steel pipe butt joint device for electric power tower, which does not need to adjust according to the inner diameter of the steel pipe, has a large range of steel pipe inner diameter, high practicability and high work efficiency.

[0004] The utility model discloses a steel pipe butt joint device for electric power tower, including square tube, a plurality of telescopic arms, four pressing plates, locking mechanism, four corner blocks, end plate, two light rails, mounting seat, bearing, two tool holders, two cutting knives and driving mechanism, a plurality of telescopic arms are all provided with spring and telescopic pipe, and the inner end of a plurality of telescopic arms is rotatably connected on the four side outer walls of square tube, and the outer end of a plurality of telescopic arms is rotatably connected with four pressing plates, and four pressing plates are arranged in parallel with the four side outer walls of square tube, and four corner blocks are installed in the right end of four pressing plates through positioning pin respectively, and the locking mechanism of a plurality of telescopic arms is installed in the inside of square tube, and locking mechanism is limit connected with a plurality of telescopic arms, and end plate is installed in the right end of square tube, and two light rails are slidably installed at the front and rear ends of end plate respectively, and two light rails are arranged in parallel with square tube, and mounting seat is installed at the right end of two light rails, and bearing is concentrically installed on the right end face of mounting seat, and two tool holders are symmetrically installed on the outer ring of bearing, and two cutting knives are installed at the outer end of two tool holders respectively, and driving mechanism is installed on mounting seat, and driving mechanism is transmission connection with two tool holders, according to the angle and form of the choice suitable cutting knife installation on tool holder, loosen locking mechanism, make a plurality of telescopic arms be in free state, and four pressing plates are close to square tube, and four pressing plates are inserted into the inner diameter of steel pipe, and four corner blocks are clamped at the port of steel pipe respectively, and square tube is pushed to the inside of steel pipe, so that a plurality of telescopic arms are vertically erected, and a plurality of telescopic arms are compressed simultaneously, and four pressing plates are compressed on the inner wall of steel pipe, when a plurality of telescopic arms are perpendicular to square tube, locking mechanism is limit locked with a plurality of telescopic arms, and the positioning pin of four corner blocks is pulled out to overturn four corner blocks to the inside of steel pipe, and mounting seat is pushed inwards, so that two light rails slide inwards along end plate, so that two cutting knives contact with the port of steel pipe, start driving mechanism, and driving mechanism drives two cutting knives to carry out the butt joint of steel pipe port through two tool holders, do not need to adjust according to the inner diameter of steel pipe, simple operation, and the range of steel pipe inner diameter is large, and the practicability is high, and the working efficiency is improved.

[0005] Preferably, the locking mechanism further comprises two guide plates, a square rod, a plurality of pull rods, a plurality of clamping blocks and a tension spring, a plurality of sliding holes are formed in the four side walls of the square tube, the inner ends of the plurality of telescopic arms are provided with clamping grooves, the left and right ends of the inside of the square tube are both provided with guide plates, the left and right ends of the square rod are both in sliding connection with the two guide plates, the inner ends of the plurality of pull rods are in rotational connection with the four side walls of the square rod, the outer ends of the plurality of pull rods are in rotational connection with the inner ends of the clamping blocks, the plurality of clamping blocks are in sliding installation in the plurality of sliding holes of the square tube, the outer ends of the plurality of clamping blocks respectively extend out of the outer wall of the square tube and are clamped in the clamping grooves of the plurality of telescopic arms, the right end of the square rod is provided with a handle, the handle extends out of the outer wall of the square tube, the tension spring is sleeved on the square rod, and the two ends of the tension spring are respectively connected with the right guide plate and the handle; when the plurality of telescopic arms are vertically erected with the square tube, the clamping grooves at the inner ends of the plurality of telescopic arms are respectively limited and clamped with the outer ends of the plurality of clamping blocks, at this time, the plurality of telescopic arm parts can swing left and right, the stability of the device is improved, when it is needed to be unlocked, the handle of the square rod is pulled to the right, the square rod moves to the right synchronously, the two guide plates guide the square rod, and the square rod pulls the plurality of clamping blocks to the inside of the square tube through the plurality of pull rods, so that the plurality of clamping blocks are separated from the clamping grooves of the plurality of telescopic arms, at this time, the square tube is pulled outwards, so that the plurality of telescopic arms can be inclined, so that the plurality of pressing plates are separated from the inside of the steel pipe, the device is taken out, the operation is convenient, and the practicality of the device is improved.

[0006] Preferably, the device further comprises two threaded sleeves and two nuts, the outer walls of the two threaded sleeves are both provided with threads, the right ends of the two threaded sleeves are both provided with nuts, the two threaded sleeves are respectively in sliding sleeve installation on the two light rails, and the two threaded sleeves are respectively in rotational threaded connection with the front and rear ends of the end plate; the two light rails are both in sliding installation on the end plate through the two threaded sleeves, the relative positions of the two threaded sleeves and the end plate are adjusted by rotating the two nuts, so that the distance between the two nuts and the mounting seat is changed, the depth of the groove is limited by the two nuts, and the practicality of the device is improved.

[0007] Preferably, the device further comprises two cutting tension springs, the two cutting tension springs are respectively sleeved on the left ends of the two light rails, and the two ends of the two cutting tension springs are respectively connected with the left ends of the two light rails and the left end face of the end plate; by installing the two cutting tension springs, the two cutting tension springs are pulled to the left by the elastic force, so that the two cutting knives maintain a certain cutting pressure with the port, manual pushing is not needed, and the practicality of the equipment is improved.

[0008] Preferably, the driving mechanism further comprises an outer rotor motor, a connecting ring and a push plate, the stator of the outer rotor motor is concentrically installed on the right end face of the mounting seat, the left end of the outer rotor of the outer rotor motor is provided with the connecting ring, the connecting ring is connected with the two tool holders, and the push plate is installed on the right end of the outer rotor of the outer rotor motor; the device is conveniently put in and taken out through the push plate, the outer rotor of the outer rotor motor drives the two tool holders to rotate through the connecting ring, the structure is simple, and the transmission effect is good.

[0009] Preferably, the plurality of buffer pads are arranged on the outer walls of the four pressing plates, and the plurality of buffer pads are made of elastic material; the four pressing plates are tightly pressed against the inner wall of the steel pipe through the plurality of buffer materials, so that the coating on the inner wall of the steel pipe is prevented from being damaged, and the practicability of the device is improved.

[0010] Compared with the prior art, the utility model has the advantages that: according to the angle and form of the groove, the suitable cutting tool is installed on the tool holder, the locking mechanism is loosened, the plurality of telescopic arms are in the free state, and the four pressing plates are close to the square pipe; the four pressing plates are inserted into the inner diameter of the steel pipe, and the four corner blocks are clamped on the ports of the steel pipe; the square pipe is pushed into the steel pipe, so that the plurality of telescopic arms are vertically erected, and the plurality of telescopic arms are compressed; the four pressing plates are tightly pressed on the inner wall of the steel pipe; when the plurality of telescopic arms are perpendicular to the square pipe, the locking mechanism is locked, the positioning pin of the four corner blocks is pulled out, the four corner blocks are turned to the inside of the steel pipe, the mounting seat is pushed inwards, the two light rails slide inwards along the end plate, the two cutting tools contact the ports of the steel pipe, the driving mechanism is started, the driving mechanism drives the two cutting tools through the two tool holders to process the groove of the steel pipe port, without adjusting according to the inner diameter of the steel pipe, the operation is simple, the range of the inner diameter of the steel pipe is large, the practicability is high, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the structural schematic diagram of the utility model;

[0012] Fig. 2 It is the front sectional structural schematic diagram of the utility model;

[0013] Fig. 3 It is the structural schematic diagram of the locking mechanism;

[0014] Fig. 4 It is the enlarged structural schematic diagram of the driving mechanism, the threaded sleeve, the nut and the cutting spring structure;

[0015] Mark in the drawing: 1, square pipe; 2, telescopic arm; 3, pressing plate; 4, corner block; 5, end plate; 6, light rail; 7, mounting seat; 8, bearing; 9, tool holder; 10, cutting tool; 11, guide plate; 12, square rod; 13, pull rod; 14, clamping block; 15, spring; 16, threaded sleeve; 17, nut; 18, cutting spring; 19, outer rotor motor; 20, connecting ring; 21, push plate. DETAILED DESCRIPTION

[0016] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Embodiment 1

[0017] A power tower steel pipe beveler device, comprising a square tube 1, a plurality of telescopic arms 2, four pressing plates 3, a locking mechanism, four corner blocks 4, an end plate 5, two light rails 6, a mounting seat 7, a bearing 8, two tool holders 9, two cutting knives 10 and a driving mechanism, the plurality of telescopic arms 2 are provided with springs and telescopic tubes, the inner ends of the plurality of telescopic arms 2 are rotatably connected to the four outer walls of the square tube 1, the outer ends of the plurality of telescopic arms 2 are rotatably connected to the four pressing plates 3, the four pressing plates 3 are arranged in parallel with the four outer walls of the square tube 1, the four corner blocks 4 are installed on the right ends of the four pressing plates 3 through positioning pins, the locking mechanism of the plurality of telescopic arms 2 is installed in the square tube 1, the locking mechanism is limitingly connected with the plurality of telescopic arms 2, the end plate 5 is installed on the right end of the square tube 1, the two light rails 6 are slidably installed on the front and rear ends of the end plate 5, the two light rails 6 are arranged in parallel with the square tube 1, the mounting seat 7 is installed on the right end of the two light rails 6, the bearing 8 is concentrically installed on the right end face of the mounting seat 7, the two tool holders 9 are symmetrically installed on the outer rings of the bearing 8, the two cutting knives 10 are installed on the outer ends of the two tool holders 9, and the driving mechanism is installed on the mounting seat 7 and is in transmission connection with the two tool holders 9; according to the angle and form of the bevel, the appropriate cutting knife 10 is selected and installed on the tool holder 9, the locking mechanism is loosened, the plurality of telescopic arms 2 are in a free state, the four pressing plates 3 are close to the square tube 1, the four pressing plates 3 are inserted into the inner diameter of the steel pipe, the four corner blocks 4 are clamped on the ports of the steel pipe respectively, the square tube 1 is pushed into the steel pipe, the plurality of telescopic arms 2 are vertically erected, the plurality of telescopic arms 2 are compressed, the four pressing plates 3 are tightly pressed on the inner wall of the steel pipe, when the plurality of telescopic arms 2 are perpendicular to the square tube 1, the locking mechanism limitingly locks the plurality of telescopic arms 2, the positioning pins of the four corner blocks 4 are pulled out to turn the four corner blocks 4 to the inside of the steel pipe, the mounting seat 7 is pushed inward, the two light rails 6 slide inward along the end plate 5, the two cutting knives 10 contact the ports of the steel pipe, the driving mechanism is started, the driving mechanism drives the two cutting knives 10 to process the ports of the steel pipe through the two tool holders 9, without adjusting according to the inner diameter of the steel pipe, the operation is simple, the range of the inner diameter of the steel pipe is large, the practicability is high, and the work efficiency is improved. Embodiment 2

[0018] The utility model provides a kind of electric power tower steel pipe straight bevel device, including square tube 1, multiple telescopic arms 2, four pressing plates 3, locking mechanism, four corner blocks 4, end plate 5, two light rails 6, mounting seat 7, bearing 8, two tool holders 9, two cutting knives 10 and drive mechanism, multiple telescopic arms 2 are provided with spring and telescopic pipe, the inner end of multiple telescopic arms 2 is respectively connected with the four sides outer wall of square tube 1 rotation, the outer end of multiple telescopic arms 2 is respectively connected with four pressing plates 3 rotation, four pressing plates 3 are respectively arranged in parallel with the four sides outer wall of square tube 1, four corner blocks 4 are respectively installed in the right end of four pressing plates 3 by positioning pin, locking mechanism of multiple telescopic arms 2 is installed in the inside of square tube 1, locking mechanism is limit connected with multiple telescopic arms 2, end plate 5 is installed in the right end of square tube 1, two light rails 6 are respectively slidably installed in the front and rear ends of end plate 5, two light rails 6 are arranged in parallel with square tube 1, mounting seat 7 is installed in the right end of two light rails 6, bearing 8 is concentrically installed on the right end surface of mounting seat 7, two tool holders 9 are symmetrically installed on the outer ring of bearing 8, two cutting knives 10 are respectively installed in the outer end of two tool holders 9, drive mechanism is installed on mounting seat 7, and drive mechanism is transmission connection with two tool holders 9;Locking mechanism further includes two guide plates 11, square bar 12, multiple pull rods 13, multiple clamping blocks 14 and tension spring 15, the four sidewalls of square tube 1 are provided with multiple sliding holes, the inner end of multiple telescopic arms 2 is provided with clamping slot, the left and right ends in the inside of square tube 1 are installed with guide plate 11, the left and right ends of square bar 12 are slidably connected with two guide plates 11, the inner end of multiple pull rods 13 is respectively connected with the four sides outer wall of square bar 12 rotation, the outer end of multiple pull rods 13 is respectively connected with the inner end of clamping block 14 rotation, multiple clamping blocks 14 are slidably installed in multiple sliding holes of square tube 1, the outer end of multiple clamping blocks 14 respectively extends the outer wall of square tube 1 and is clamped in the clamping slot of multiple telescopic arms 2, the right end of square bar 12 is provided with handle, handle extends the outside of square tube 1, tension spring 15 is sleeved on square bar 12, and the two ends of tension spring 15 are respectively connected with right guide plate 11 and handle;Further include multiple buffer pads, the outer wall of four pressing plates 3 is provided with multiple buffer pads, and multiple buffer pads are provided with elastic material;When multiple telescopic arms 2 are perpendicular to stand up with square tube 1, four pressing plates 3 are pressed tightly with the inner wall of steel pipe by multiple buffer materials, avoid the coating damage of steel pipe inner wall, simultaneously, the clamping slot of multiple telescopic arms 2 inner end is respectively limit clamped with the outer end of multiple clamping blocks 14, at this time, multiple telescopic arms 2 part can swing left and right, when unlocking, right pull the handle of square bar 12, square bar 12 moves right simultaneously, two guide plates 11 guide square bar 12, square bar 12 pulls multiple clamping blocks 14 to the inside of square tube 1 by multiple pull rods 13, so that multiple clamping blocks 14 are respectively separated from the clamping slot of multiple telescopic arms 2, at this time, multiple telescopic arms 2 can be made to incline by pulling square tube 1 outward, so that multiple pressing plates 3 are separated from the inside of steel pipe, take out the device, convenient operation, improve the practicability of device. Example 3

[0019] The utility model provides a kind of electric power tower steel pipe butt joint device, including square tube 1, multiple telescopic arms 2, four pressing plates 3, locking mechanism, four corner blocks 4, end plate 5, two light rails 6, mounting seat 7, bearing 8, two tool holders 9, two cutting knives 10 and drive mechanism, multiple telescopic arms 2 are provided with spring and telescopic tube, the inner end of multiple telescopic arms 2 is respectively connected with the four sides outer wall of square tube 1 rotationally, the outer end of multiple telescopic arms 2 is respectively connected with four pressing plates 3 rotationally, four pressing plates 3 are respectively arranged in parallel with the four sides outer wall of square tube 1, four corner blocks 4 are respectively installed in the right end of four pressing plates 3 by positioning pin, locking mechanism of multiple telescopic arms 2 is installed in the inside of square tube 1, locking mechanism is limit connected with multiple telescopic arms 2, end plate 5 is installed in the right end of square tube 1, two light rails 6 are respectively slidably installed in the front and rear ends of end plate 5, two light rails 6 are arranged in parallel with square tube 1, mounting seat 7 is installed in the right end of two light rails 6, bearing 8 is concentrically installed on the right end surface of mounting seat 7, two tool holders 9 are symmetrically installed on the outer ring of bearing 8, two cutting knives 10 are respectively installed in the outer end of two tool holders 9, drive mechanism is installed on mounting seat 7, and drive mechanism is transmissionally connected with two tool holders 9;It also includes two threaded sleeves 16 and two nuts 17, the outer wall of two threaded sleeves 16 is provided with thread, the right end of two threaded sleeves 16 is provided with nut 17, two threaded sleeves 16 are respectively slidably sleeved on two light rails 6, and two threaded sleeves 16 are respectively rotationally screwed on the front and rear ends of end plate 5;It also includes two cutting tension springs 18, two cutting tension springs 18 are respectively sleeved on the left end of two light rails 6, and the two ends of two cutting tension springs 18 are respectively connected with the left end of two light rails 6 and the left end surface of end plate 5;Drive mechanism also includes outer rotor motor 19, connecting ring 20 and push plate 21, the stator of outer rotor motor 19 is concentrically installed on the right end surface of mounting seat 7, the left end of the outer rotor of outer rotor motor 19 is provided with connecting ring 20, connecting ring 20 is connected with two tool holders 9, and push plate 21 is installed on the right end of the outer rotor of outer rotor motor 19;Two light rails 6 are slidably installed on end plate 5 by two threaded sleeves 16, two nuts 17 are rotated, the relative position of two threaded sleeves 16 and end plate 5 is adjusted, so that the distance between two nuts 17 and mounting seat 7 changes, so that two nuts 17 limit the depth of the bevel, the elasticity of two cutting tension springs 18 pulls two light rails 6 to left, so that two cutting knives 10 keep certain cutting pressure with end port, without manual pushing, the device is conveniently put in and taken out through push plate 21, the outer rotor of outer rotor motor 19 drives two tool holders 9 to rotate through connecting ring 20, simple structure, transmission effect is good, improve the practicability of equipment.

[0020] As Figs. 1 to 4As shown, the steel pipe butt joint groove device for electric power iron tower, when working, firstly, according to the angle and form of the groove, the suitable cutting tool 10 is installed on the tool holder 9, two nuts 17 are rotated to adjust the groove depth, then the locking mechanism is loosened, the plurality of telescopic arms 2 are in a free state, and the four pressing plates 3 are close to the square tube 1, then the four pressing plates 3 are inserted into the inner diameter of the steel pipe, and the four corner blocks 4 are respectively clamped on the port of the steel pipe, the square tube 1 is pushed into the steel pipe, so that the plurality of telescopic arms 2 are vertically erected, and the plurality of telescopic arms 2 are compressed, the four pressing plates 3 are tightly pressed on the inner wall of the steel pipe, when the plurality of telescopic arms 2 are perpendicular to the square tube 1, the plurality of clamping blocks 14 are respectively clamped into the clamping grooves of the plurality of telescopic arms 2 for limiting locking, the positioning pin of the four corner blocks 4 is pulled out, the four corner blocks 4 are turned to the inside of the steel pipe, the two cutting springs 18 pull the mounting seat 7 inward, so that the two light rails 6 slide inward along the two threaded sleeves 16, so that the two cutting tools 10 contact the port of the steel pipe, finally, the outer rotor motor 19 is started, and the outer rotor motor 19 drives the two tool holders 9 and the two cutting tools 10 to process the groove of the port of the steel pipe.

[0021] The main function realized by the utility model is: without adjusting according to the inner diameter of the steel pipe, the range of the inner diameter of the steel pipe is large, and the utility model has high practicability and high work efficiency.

[0022] The installation mode, connection mode or setting mode of the steel pipe butt joint groove device for electric power iron tower are all common mechanical modes, as long as the beneficial effects can be achieved, the implementation can be carried out; the outer rotor motor 19, the light rail 6, the bearing 8, the cutting tool 10, the tension spring 15, the cutting spring 18, the threaded sleeve 16 and the nut 17 of the steel pipe butt joint groove device for electric power iron tower are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0023] All the technical and scientific terms used in the present application have the same meaning as that understood by the technical personnel belonging to the technical field of the utility model. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments, and are not intended to limit the utility model. The term "and / or" used in the present application includes any and all combinations of one or more related listed items.

[0024] The above only describes the preferred embodiments of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, without departing from the technical principles of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. A beveling device for steel pipes used in power transmission towers, characterized in that, Includes a square tube (1), multiple telescopic arms (2), four pressure plates (3), a locking mechanism, four corner blocks (4), end plates (5), two optical tracks (6), a mounting base (7), bearings (8), two tool holders (9), two cutting blades (10), and a drive mechanism. Each of the multiple telescopic arms (2) is equipped with a spring and a telescopic tube. The inner ends of the multiple telescopic arms (2) are rotatably connected to the four outer walls of the square tube (1). The outer ends of the multiple telescopic arms (2) are rotatably connected to the four pressure plates (3). The four pressure plates (3) are arranged parallel to the four outer walls of the square tube (1). The four corner blocks (4) are respectively installed on the right ends of the four pressure plates (3) via positioning pins. The internal part of the tube is equipped with a locking mechanism for multiple telescopic arms (2). The locking mechanism is limited to the multiple telescopic arms (2). The end plate (5) is installed on the right end of the square tube (1). Two light rails (6) are slidably installed on the front and rear ends of the end plate (5). The two light rails (6) are arranged parallel to the square tube (1). The mounting base (7) is installed on the right end of the two light rails (6). The bearing (8) is concentrically installed on the right end face of the mounting base (7). Two tool holders (9) are symmetrically installed on the outer ring of the bearing (8). Two cutting tools (10) are installed on the outer ends of the two tool holders (9). The drive mechanism is installed on the mounting base (7) and is connected to the two tool holders (9) in a transmission manner.

2. The beveling device for steel pipes used in power transmission towers as described in claim 1, characterized in that, The locking mechanism also includes two guide plates (11), a square rod (12), multiple pull rods (13), multiple locking blocks (14), and a tension spring (15). Multiple sliding holes are provided on the four side walls of the square tube (1), and the inner ends of the multiple telescopic arms (2) are provided with locking grooves. Guide plates (11) are installed on both the left and right ends of the inside of the square tube (1). The left and right ends of the square rod (12) are slidably connected to the two guide plates (11) respectively, and the inner ends of the multiple pull rods (13) are rotatably connected to the four outer side walls of the square rod (12). Then, the outer ends of multiple pull rods (13) are rotatably connected to the inner ends of the locking blocks (14). Multiple locking blocks (14) are slidably installed in multiple sliding holes of the square tube (1). The outer ends of multiple locking blocks (14) extend out of the outer wall of the square tube (1) and are locked in the slots of multiple telescopic arms (2). A handle is provided at the right end of the square rod (12). The handle extends out of the outside of the square tube (1). A tension spring (15) is fitted on the square rod (12). The two ends of the tension spring (15) are connected to the guide plate (11) on the right side and the handle, respectively.

3. The beveling device for steel pipes used in power transmission towers as described in claim 1, characterized in that, It also includes two threaded sleeves (16) and two nuts (17). The outer walls of the two threaded sleeves (16) are provided with threads, and the right ends of the two threaded sleeves (16) are provided with nuts (17). The two threaded sleeves (16) are respectively slidably fitted on the two optical tracks (6), and the two threaded sleeves (16) are respectively rotatably screwed to the front and rear ends of the end plate (5).

4. The beveling device for steel pipes used in power transmission towers as described in claim 3, characterized in that, It also includes two cutting springs (18), which are respectively fitted on the left end of the two optical tracks (6). The two ends of the two cutting springs (18) are respectively connected to the left end of the two optical tracks (6) and the left end face of the end plate (5).

5. The beveling device for steel pipes used in power transmission towers as described in claim 1, characterized in that, The drive mechanism also includes an external rotor motor (19), a connecting ring (20) and a push plate (21). The stator of the external rotor motor (19) is concentrically mounted on the right end face of the mounting base (7). A connecting ring (20) is provided on the left end of the external rotor of the external rotor motor (19). The connecting ring (20) is connected to two tool holders (9). The push plate (21) is mounted on the right end of the external rotor of the external rotor motor (19).

6. The beveling device for steel pipes used in power transmission towers as described in claim 1, characterized in that, It also includes multiple buffer pads. Multiple buffer pads are provided on the outer walls of the four pressure plates (3), and the multiple buffer pads are provided with elastic material.

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