CN215614257U - Steel pipe bending machine - Google Patents

Abstract

The utility model discloses a steel pipe bending machine which comprises a base, wherein two symmetrically arranged support frames are fixedly arranged on the base, a fixed platform is fixedly arranged on one side of each support frame, a rotating platform is rotatably arranged on the other side of each support frame, support assemblies are respectively and movably arranged on the two support frames, a first bending roller is rotatably arranged between the two support assemblies, a power driving assembly is arranged on the base, and the output end of the power driving assembly is in transmission connection with two ends of the first bending roller through a transmission assembly.

Description

Steel pipe bending machine

Technical Field

The utility model belongs to the technical field of bending machines, and particularly relates to a steel pipe bending machine.

Background

The steel pipe is a very common pipeline connecting piece, and the steel pipes sold on the market are straight steel pipes, but in the actual production process, the steel pipes are often required to be bent, and the steel pipes are bent to change the overall shape so as to meet various production requirements.

Traditional steel pipe is bent and is generally adopted the bender to buckle, but current the buckling use is inconvenient, is like patent application number: CN201820582496.1 discloses a bender suitable for small-size piece of bending, including supporting baseplate, jack, hydraulic pressure pivot, diaphragm A, the backup pad, rotary drum A of bending, pivot B of bending, rotary drum B of bending, the axis of rotation, the location guard plate, the rolling disc, rotary drum C of bending, pivot C of bending, diaphragm B, the fixed plate, the joint part of bending, rotary drum D of bending.

Above-mentioned this kind of current crib crimper can buckle the steel pipe, and this kind of current crib crimper adopts the guide rail of buckling that a plurality of rotary drums of bending formed to fix the steel pipe to adjust the position of the rotary drum of bending, realize bending of steel pipe, but the rotary drum of bending on this kind of current crib crimper is fixed connection, can only be used for the steel pipe of same model then, reduces the result of use.

And when using, rotate the rolling disc through the user and drive the rotary drum of bending and rotate to realize the steel pipe of buckling, its whole degree of automation is the first, and adopt manual the buckling comparatively hard, and the time of just bending is longer, influences the result of use, reduction in production rate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the main technical problem of providing a steel pipe bending machine which is simple in structure, convenient to use, capable of being suitable for bending steel pipes of various types, capable of reducing labor intensity of workers, shortening bending time and improving production rate.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a steel pipe bending machine, includes the base, fixed mounting has two support frames that are the symmetry and lay on the base, and one side fixed mounting of support frame has fixed platform, and the opposite side of support frame rotates installs and rotates the platform, and movable mounting has supporting component respectively on two support frames, rotates between two supporting component and installs first roller of buckling, installs power drive assembly on the base, and power drive assembly's output passes through drive assembly and the both ends transmission of first roller of buckling and is connected.

The following is a further optimization of the above technical solution of the present invention:

and the two sides of the first bending roller are respectively provided with a second bending roller and a third bending roller, and the axes of the second bending roller and the third bending roller are respectively arranged in parallel with the axis of the first bending roller.

Further optimization: the second bending roller is supported by a first sliding support assembly to rotate, and the first sliding support assembly is slidably mounted on the fixed platform; the third bending roller is supported and rotated through a second sliding support assembly, and the second sliding support assembly is slidably mounted on the rotating platform.

Further optimization: and the two side surfaces of the rotating platform, which are close to the support frame, are respectively and fixedly provided with a rotating shaft, and the rotating shafts are rotatably connected with the support frame.

Further optimization: the lower part of the rotating platform on the base is fixedly provided with a hydraulic telescopic component, and a telescopic rod of the hydraulic telescopic component is rotatably connected with the lower surface of the rotating platform.

Further optimization: the supporting assembly comprises sliding mounting frames which are respectively slidably mounted on the two supporting frames, the sliding mounting frames are fixedly connected with the supporting frames through bolt fastening assemblies, and two ends of the first bending roller are respectively rotatably connected with the sliding mounting frames.

Further optimization: the power driving assembly comprises a driving motor fixedly installed on the base, and a power output end of the driving motor is in transmission connection with the transmission assembly.

Further optimization: the transmission assembly comprises an intermediate transmission shaft which is rotatably arranged between the two support frames, and the intermediate transmission shaft is in transmission connection with the power output end of the driving motor through a chain wheel and chain transmission assembly.

Further optimization: two both sides department that the support frame deviates from mutually rotates respectively and installs flexible transmission assembly, and flexible transmission assembly's lower extreme is connected through the transmission of first bevel gear transmission subassembly with middle transmission shaft, and flexible transmission assembly's upper end is connected with the transmission of first bending roller through second bevel gear transmission subassembly.

Further optimization: the telescopic transmission assembly comprises a spline shaft and a spline housing, the spline shaft and the spline housing are in transmission connection through a spline pair, a first rotating support seat is fixedly sleeved on the outer surface of the spline shaft, and the first rotating support seat is fixedly installed on the sliding installation frame; the outer surface of the spline housing is fixedly sleeved with a second rotating support seat, and the second rotating support seat is fixedly installed on the support frame.

By adopting the technical scheme, the steel pipe bending device is ingenious in conception and reasonable in structure, steel pipes can be bent, the height of the first bending roller can be adjusted, the horizontal positions of the second bending roller and the third bending roller can be adjusted, the steel pipes of various specifications can be further bent, the hydraulic telescopic assembly can drive the rotating platform and the third bending roller to adjust the circumferential positions, the path of a bending channel can be changed, the steel pipe bending device can be suitable for various bending requirements, and the application range is enlarged.

And whole degree of automation is high, and its first bending roller is rotated by the drive of power drive assembly, and then can drive the steel pipe of treating buckling and buckle through buckling the passageway and carry out the bending, facilitates the use to can alleviate intensity of labour greatly, reduce the time of bending, improve the result of use, improve production rate.

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

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a top view of the overall structure in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a width-limiting slider in the embodiment of the present invention.

In the figure: 1-a base; 2-a support frame; 21-a sliding mount; 22-elongated holes; 23-a fixing bolt; 3-rotating the platform; 31-a rotating shaft; 4-a fixed platform; 41-a support seat; 5-a first bending roller; 6-a second bending roller; 61-a first slide; 62-a first runner; 63-a first bolt; 64-a first scale; 7-a third bending roller; 71-a second slider; 72-a second runner; 73-a second bolt; 74-a second scale; 8-a hydraulic telescopic assembly; 81-third scale; 9-driving a motor; 91-intermediate drive shaft; 92-a first bevel gear transmission assembly; 921 — a first bevel gear; 922-second bevel gear; 93-a second bevel gear transmission assembly; 931 — a third bevel gear; 932-a fourth bevel gear; 94-a splined shaft; 95-spline housing; 96-a first rotary support; 97-a second rotary support; 10-a limit sleeve; 101-jack bolt.

Detailed Description

Example (b): referring to fig. 1-4, a steel pipe bending machine includes a base 1, two support frames 2 symmetrically arranged are fixedly mounted on the base 1, a fixed platform 4 is fixedly mounted on one side of each support frame 2, a rotating platform 3 is rotatably mounted on the other side of each support frame 2, support assemblies are respectively and movably mounted on the two support frames 2, a first bending roller 5 is rotatably mounted between the two support assemblies, a power driving assembly is mounted on the base 1, and an output end of the power driving assembly is in transmission connection with two ends of the first bending roller 5 through a transmission assembly.

And a second bending roller 6 and a third bending roller 7 are respectively arranged on two sides of the first bending roller 5, and the axes of the second bending roller 6 and the third bending roller 7 are respectively arranged in parallel with the axis of the first bending roller 5.

The second bending roller 6 is supported by a first sliding support component which is arranged on the fixed platform 4 in a sliding way.

The first sliding support assembly comprises first sliding blocks 61 respectively arranged at two ends of the second bending roller 6, and two ends of the second bending roller 6 are respectively connected with the corresponding first sliding blocks 61 in a rotating mode.

The first sliding block 61 is used for supporting the second bending roller 6 to rotate.

The fixed platform 4 is provided with first sliding grooves 62 at positions corresponding to the two first sliding blocks 61, and the first sliding blocks 61 are slidably connected in the corresponding first sliding grooves 62.

Design like this, the sliding connection of first slider 61 of accessible and first spout 62 can be with second bending roller 6 slidable mounting on fixed platform 4 to can also be used for supporting second bending roller 6 through first slider 61 and rotate, facilitate the use.

First slider 61 can drive second bending roller 6 and remove to the one side that is close to first bending roller 5 when first spout 62 is inside to the one side that is close to first bending roller 5, and then realizes reducing the interval between second bending roller 6 and the first bending roller 5, improves the result of use.

First slider 61 can drive second bending roller 6 and remove to the one side of keeping away from first bending roller 5 when first spout 62 is inwards kept away from one side of first bending roller 5, and then realizes increasing the interval between second bending roller 6 and the first bending roller 5, improves the result of use.

The first sliding block 61 is fixedly provided with a first bolt 63, and the first bolt 63 penetrates through the lower end surface of the first sliding block 61 and is abutted against the bottom of the first sliding groove 62.

By means of the design, the first bolt 63 can be abutted to the bottom of the first sliding chute 62 by rotating the first bolt 63, and then the first bolt 63 can be used for positioning the position between the first sliding block 61 and the first sliding chute 62, and further can be used for positioning the position of the second bending roller 6, so that the use is facilitated.

And when the first bolt 63 is rotated reversely, the first bolt 63 can be separated from the bottom of the first sliding groove 62, and at the moment, the first sliding block 61 can be conveniently slid in the first sliding groove 62, so that the use is convenient.

In this embodiment, the cross-sectional shapes of the first slider 61 and the first sliding groove 62 are both "convex" shapes.

A first scale 64 is respectively arranged on one side of the fixed platform 4, which is located on the first sliding chute 62.

By means of the design, the sliding distance of the first sliding block 61 can be intuitively reflected through the first graduated scale 64, and the use is convenient.

And the third bending roller 7 is supported by a second sliding support component which is arranged on the rotating platform 3 in a sliding manner.

The second sliding support assembly comprises second sliding blocks 71 respectively arranged at two ends of the third bending roller 7, and two ends of the third bending roller 7 are respectively connected with the corresponding second sliding blocks 71 in a rotating manner.

The second slider 71 is used for supporting the third bending roller 7 for rotation.

The rotating platform 3 is provided with second sliding grooves 72 at positions corresponding to the two second sliding blocks 71, and the second sliding blocks 71 are slidably connected in the corresponding second sliding grooves 72.

By the design, the third bending roller 7 can be slidably mounted on the rotating platform 3 through the sliding connection between the second sliding block 71 and the second sliding groove 72, and the second sliding block 71 can also be used for supporting the third bending roller 7 to rotate, so that the bending device is convenient to use.

When the second sliding block 71 moves towards one side close to the first bending roller 5 in the second sliding groove 72, the third bending roller 7 can be driven to move towards one side close to the first bending roller 5, so that the distance between the third bending roller 7 and the first bending roller 5 is reduced, and the using effect is improved.

When the second sliding block 71 moves towards the side far away from the first bending roller 5 in the second sliding groove 72, the third bending roller 7 can be driven to move towards the side far away from the first bending roller 5, so that the distance between the third bending roller 7 and the first bending roller 5 is increased, and the using effect is improved.

A second bolt 73 is fixedly mounted on the second slider 71, and the second bolt 73 penetrates through the lower end surface of the second slider 71 and is abutted against the bottom of the second sliding groove 72.

By means of the design, the second bolt 73 can be abutted to the bottom of the second sliding chute 72 by rotating the second bolt 73, and then the second bolt 73 can be used for positioning the position between the second sliding block 71 and the second sliding chute 72, and further can be used for positioning the position of the third bending roller 7, so that the bending roller is convenient to use.

And when the second bolt 73 is rotated reversely, the second bolt 73 can be separated from the bottom of the second sliding groove 72, and at the moment, the second sliding block 71 can be conveniently slid in the second sliding groove 72, so that the use is convenient.

A second scale 74 is respectively arranged on one side of the second sliding chute 72 on the rotating platform 3.

With the design, the sliding distance of the second slider 71 can be intuitively reflected through the second scale 74, and the use is convenient.

The first bending roller 5, the second bending roller 6 and the third bending roller 7 are arranged in a triangular shape, and a bending channel is formed among the first bending roller 5, the second bending roller 6 and the third bending roller 7.

Design like this, when the steel pipe passes through this passageway of buckling, through the bending to the steel pipe of first bending roll 5, second bending roll 6 and third bending roll 7, can make the steel pipe buckle, facilitate the use.

A supporting seat 41 is fixedly arranged below the fixed platform 4 and on one side far away from the supporting frame 2, and the lower end of the supporting seat 41 is fixedly connected with the base 1.

Design like this, through support frame 2 and supporting seat 41 can stabilize install fixed platform 4 on base 1, overall structure is stable, improves the result of use.

The two side faces of the rotating platform 3, which are close to the support frame 2, are respectively and fixedly provided with a rotating shaft 31, and the rotating shafts 31 are rotatably connected with the support frame 2.

Design like this, rotating platform 3 realizes rotating with support frame 2 through pivot 31 and is connected to rotating platform 3 can rotate along the axis of pivot 31, and then adjusts the position of second bending roller 6, and then can change the route of passageway of buckling, and then can be applicable to multiple requirement of buckling, improves application range.

The lower fixed mounting that lies in rotation platform 3 on base 1 has hydraulic telescoping assembly 8, hydraulic telescoping assembly 8's telescopic link rotates with rotation platform 3's lower surface to be connected.

The power output by the hydraulic telescopic assembly 8 can be that the telescopic rod extends out or retracts, and when the telescopic rod of the hydraulic telescopic assembly 8 extends out or retracts, the rotary platform 3 can be driven to rotate along the axis of the rotary shaft 31, so that the angle between the rotary platform 3 and the ground can be adjusted, and the use is convenient.

In this embodiment, the hydraulic telescopic assembly 8 may adopt a telescopic mechanism such as a jack, a hydraulic cylinder, and the like.

The telescopic link of the hydraulic telescopic assembly 8 is provided with a third graduated scale 81, and the telescopic length of the telescopic link of the hydraulic telescopic assembly 8 can be intuitively reflected through the third graduated scale 81, so that the hydraulic telescopic assembly is convenient to use.

The supporting component comprises sliding mounting frames 21 which are respectively slidably mounted on the two supporting frames 2, and the sliding mounting frames 21 are fixedly connected with the supporting frames 2 through bolt fastening components.

When sliding mounting frame 21 slides from top to bottom along the axial of support frame 2, can drive first bending roller 5 and reciprocate, and then can realize adjusting the width of passageway of buckling, make the passageway of buckling can be applicable to the steel pipe of multiple specification, improve the result of use.

A sliding groove is formed in the sliding mounting frame 21, and the shape of the cross section of the sliding groove is matched with that of the cross section of the support frame 2.

Two sets of rectangular punch combination have been seted up on the sliding installation frame 21, and two sets of rectangular punch combination are laid for parallel, every rectangular punch combination of group all includes a plurality of rectangular holes 22, and a plurality of rectangular holes 22 are laid along vertical direction, the bolt perforation has been seted up with the corresponding position department in rectangular hole 22 on the support frame 2.

The bolt fastening assembly includes a fixing bolt 23 inserted into the elongated hole 22 and the bolt insertion hole.

By the design, the fixing bolt 23 penetrates through the strip hole 22 and the bolt through hole and can be used for fixedly mounting the sliding mounting frame 21 on the support frame 2, and assembly and installation are facilitated.

And can also be after loosening fixing bolt 23 through rectangular hole 22, adjust the position between slip mounting bracket 21 and support frame 2, facilitate the use.

And bearing seats are respectively and fixedly installed at one ends, far away from the support frame 2, of the sliding installation frames 21, and two ends of the first bending rollers 5 are respectively and rotatably connected with the bearing seats.

The power driving assembly comprises a driving motor 9 fixedly mounted on the base 1, and a power output end of the driving motor 9 is in transmission connection with the transmission assembly.

The transmission assembly comprises an intermediate transmission shaft 91 rotatably installed between the two support frames 2, and the intermediate transmission shaft 91 is in transmission connection with the power output end of the driving motor 9 through a chain wheel and chain transmission assembly.

The chain wheel and chain transmission assembly comprises two chain wheels and a chain, the two chain wheels are respectively and fixedly installed at the middle part of the middle transmission shaft 91 and the power output end of the driving motor 9, and the chain is sleeved on the two chain wheels.

The working output power of the driving motor 9 can drive the middle transmission shaft 91 to rotate through the transmission of the chain wheel and chain transmission assembly.

Two ends of the middle transmission shaft 91 respectively penetrate through two side surfaces of the two support frames 2 which deviate from each other and extend outwards for a certain distance.

Two both sides department that support frame 2 deviates from each other rotates respectively and installs flexible transmission assembly, the lower extreme of flexible transmission assembly passes through first bevel gear drive assembly 92 and is connected with the transmission of intermediate drive axle 91, the upper end of flexible transmission assembly passes through second bevel gear drive assembly 93 and is connected with the transmission of first bending roller 5.

The telescopic transmission assembly comprises a spline shaft 94 and a spline housing 95, and the spline shaft 94 and the spline housing 95 are in transmission connection through a spline pair.

The spline shafts 94 and the spline housings 95 are arranged in the height direction of the slide mount 21 and the support frame 2, respectively.

The outer surface of the spline shaft 94 is fixedly sleeved with a first rotating support seat 96, and the first rotating support seat 96 is fixedly installed on the sliding installation frame 21.

By such a design, the spline shaft 94 can be rotatably mounted on the slide mounting frame 21 through the first rotation support seat 96, and the first rotation support seat 96 can be used for supporting the spline shaft 94 to rotate, so that the use is convenient.

The outer surface of the spline housing 95 is fixedly sleeved with a second rotary support seat 97, and the second rotary support seat 97 is fixedly mounted on the support frame 2.

Design like this, the accessible second rotates supporting seat 97 can rotate spline housing 95 and install on support frame 2 to rotate supporting seat 97 through the second and can be used for supporting spline housing 95 and rotate, facilitate the use.

And the spline shaft 94 and the spline housing 95 are in transmission connection through a spline pair, so that when the sliding mounting frame 21 slides along the height direction of the support frame 2, the integral length between the spline shaft 94 and the spline housing 95 can be adjusted along with the spline pair, the transmission function is not affected, and the use is convenient.

The first bevel gear transmission assembly 92 comprises a first bevel gear 921 and a second bevel gear 922 which are meshed with each other, wherein the first bevel gear 921 is fixedly arranged on the spline housing 95, and the second bevel gear 922 is fixedly arranged on the intermediate transmission shaft 91.

The middle transmission shaft 91 rotates to drive the second bevel gear 922 to rotate, the second bevel gear 922 is meshed with the first bevel gear 921, the spline housing 95 can be driven to rotate, and the spline housing 95 rotates to drive the spline shaft 94 to rotate.

The second bevel gear assembly 93 comprises a third bevel gear 931 and a fourth bevel gear 932 which are meshed with each other, the third bevel gear 931 is fixedly installed on the spline shaft 94, and the fourth bevel gear 932 is fixedly installed on the first bending roller 5.

The spline shaft 94 rotates to drive the third bevel gear 931 to rotate, the third bevel gear 931 is meshed with the fourth bevel gear 932, the first bending roller 5 can be driven to rotate, and the using effect is improved.

And support legs are fixedly arranged below the base 1 and close to the four corners of the base.

Two limiting sleeves 10 are respectively installed on the second bending roller 6 and the third bending roller 7 in a sliding mode, and the outer surface diameters of the limiting sleeves 10 are larger than those of the second bending roller 6 and the third bending roller 7.

The diameter of the central hole of the limiting sleeve 10 is matched with the diameters of the outer surfaces of the second bending roller 6 and the third bending roller 7, and the limiting sleeve 10 is sleeved on the second bending roller 6 and the third bending roller 7 through the central hole in a sliding mode.

The two limiting sleeves 10 on the second bending roller 6 are arranged at intervals, and the distance between the two limiting sleeves 10 is matched with the diameter of the outer surface of the steel pipe to be bent.

Threaded holes are formed in the limiting sleeve 10, and the axis of each threaded hole is perpendicular to the axis of the limiting sleeve 10.

And the threaded holes of the limiting sleeves 10 are all in threaded connection with jacking bolts 101, and the end parts of the jacking bolts 101 are correspondingly arranged with the outer surfaces of the second bending rollers 6 and the third bending rollers 7.

The design is that when the jacking bolt 101 is screwed, the jacking bolt 101 can be abutted with the outer surface of the second bending roller 6 or the third bending roller 7, and can be used for positioning the limiting sleeve 10, and vice versa.

When the steel pipe bending device is used, firstly, the height of the first bending roller 5 is adjusted according to the diameter of a steel pipe to be bent, the first bending roller 5 is positioned after the adjustment is finished, then the hydraulic telescopic assembly 8 is started according to the bending requirement, and the inclination angle of the rotating platform 3 is adjusted by the output power of the hydraulic telescopic assembly 8.

After the adjustment is finished, the driving motor 9 is started, the driving motor 9 outputs power to drive the intermediate transmission shaft 91 to rotate, and the intermediate transmission shaft 91 rotates to drive the spline housing 95 and the spline shaft 94 to rotate through the first bevel gear transmission assembly 92.

The spline shaft 94 rotates to drive the first bending rollers 5 to rotate through the second bevel gear transmission assembly 93, and at the moment, the first bending rollers 5 output rotating power to drive the steel pipe in the bending channel to move and bend.

It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims.

Claims (10)

1. The utility model provides a steel pipe crib crimper, includes base (1), and fixed mounting has two support frames (2) that are the symmetry and lay on base (1), its characterized in that: one side fixed mounting of support frame (2) has fixed platform (4), and the opposite side of support frame (2) is rotated and is installed rotation platform (3), and on two support frames (2) respectively movable mounting have a supporting component, rotate between two supporting components and install first roller of buckling (5), install power drive assembly on base (1), power drive assembly's output passes through the drive assembly and is connected with the both ends transmission of first roller of buckling (5).

2. The steel pipe bender according to claim 1, wherein: and a second bending roller (6) and a third bending roller (7) are respectively arranged on two sides of the first bending roller (5), and the axes of the second bending roller (6) and the third bending roller (7) are respectively arranged in parallel with the axis of the first bending roller (5).

3. The steel pipe bender according to claim 2, wherein: the second bending roller (6) is supported by a first sliding support assembly to rotate, and the first sliding support assembly is slidably mounted on the fixed platform (4); and the third bending roller (7) is supported by a second sliding support component to rotate, and the second sliding support component is slidably mounted on the rotating platform (3).

4. The steel pipe bender according to claim 3, wherein: and the two side surfaces of the rotating platform (3) close to the support frame (2) are respectively and fixedly provided with a rotating shaft (31), and the rotating shafts (31) are rotatably connected with the support frame (2).

5. The steel pipe bender according to claim 4, wherein: a hydraulic telescopic component (8) is fixedly arranged below the rotating platform (3) on the base (1), and a telescopic rod of the hydraulic telescopic component (8) is rotatably connected with the lower surface of the rotating platform (3).

6. The steel pipe bender according to claim 5, wherein: the supporting assembly comprises sliding mounting frames (21) which are respectively slidably mounted on the two supporting frames (2), the sliding mounting frames (21) are fixedly connected with the supporting frames (2) through bolt fastening assemblies, and two ends of the first bending rollers (5) are respectively rotatably connected with the sliding mounting frames (21).

7. The steel pipe bender according to claim 6, wherein: the power driving assembly comprises a driving motor (9) fixedly installed on the base (1), and a power output end of the driving motor (9) is in transmission connection with the transmission assembly.

8. The steel pipe bender according to claim 7, wherein: the transmission assembly comprises an intermediate transmission shaft (91) rotatably installed between the two support frames (2), and the intermediate transmission shaft (91) is in transmission connection with the power output end of the driving motor (9) through a chain wheel and chain transmission assembly.

9. The steel pipe bender according to claim 8, wherein: two both sides department that support frame (2) deviate from mutually rotates respectively and installs flexible transmission assembly, and flexible transmission assembly's lower extreme is connected through the transmission of first bevel gear transmission subassembly (92) with middle transmission shaft (91), and flexible transmission assembly's upper end is connected with first bending roller (5) transmission through second bevel gear transmission subassembly (93).

10. The steel pipe bender according to claim 9, wherein: the telescopic transmission assembly comprises a spline shaft (94) and a spline sleeve (95), the spline shaft (94) and the spline sleeve (95) are in transmission connection through a spline pair, a first rotating support seat (96) is fixedly sleeved on the outer surface of the spline shaft (94), and the first rotating support seat (96) is fixedly installed on the sliding installation frame (21); a second rotary supporting seat (97) is fixedly sleeved on the outer surface of the spline sleeve (95), and the second rotary supporting seat (97) is fixedly installed on the supporting frame (2).

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