U-shaped pipe bending equipment

Abstract

The utility model discloses U-shaped pipe bending equipment which comprises a working table, a pair of pipe bending bases connected to the working table in an opening and closing mode and a pipe jacking mechanism arranged at the front end of the working table, the inner sides and the front ends of the two pipe bending bases are provided with first arc-shaped grooves which are communicated, and the rear ends of the two pipe bending bases are rotationally connected to the working table and connected with a first hydraulic cylinder. The pipe jacking mechanism comprises a track, a trolley and a lengthened pipe jacking seat, the trolley is connected to the track in a front-back moving mode, the lengthened pipe jacking seat is fixed to the end of the trolley, the lengthened pipe jacking seat is provided with a semicircular end, the semicircular end of the lengthened pipe jacking seat and the two sides of the lengthened pipe jacking seat are provided with second arc-shaped grooves which are communicated, and the pipe jacking mechanism further comprises a bracket which is connected between the rear ends of the two pipe bending seats in a telescopic mode. And a semicircular groove corresponding to the semicircular end of the lengthened pipe jacking seat is formed in the front end of the bracket. The U-shaped bending device is particularly suitable for U-shaped bending processing of large-diameter thick-wall steel pipes.

Description

Technical Field

[0001] The utility model relates to a U-shaped pipe bending device. Background Art

[0002] The U-shaped pipe bending equipment in the existing technology is generally designed for steel pipes with smaller diameters and thinner walls. Its bending force is small and there are fewer auxiliary bending structures. When it processes large-diameter thick-walled steel pipes, it is often unable to bend them smoothly. Even if it is barely processed into shape, there are defects such as partial deformation of the steel pipe and the bending part is not round enough. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies of the prior art and to provide a pipe bending device which can adapt to U-shaped bending of large-diameter thick-walled steel pipes.

[0004] The technical solution of the utility model is: a U-shaped pipe bending device, comprising a workbench, a pair of pipe bending seats connected to the workbench in an openable and closable manner, and a pipe jacking mechanism arranged at the front end of the workbench;

[0005] The inner sides and front ends of the two pipe bending seats are both provided with a first arc-shaped groove in communication, the rear ends of the two pipe bending seats are respectively rotatably connected to the workbench, and the workbench on the outer sides of the two pipe bending seats is also rotatably connected to a first hydraulic cylinder, and the piston rods of the two first hydraulic cylinders are respectively rotatably connected to the connecting parts on the outer sides of the two pipe bending seats;

[0006] The pipe jacking mechanism includes a track, a trolley connected to the track for forward and backward movement, and an extended pipe jacking seat fixed to the end of the trolley. The end of the extended pipe jacking seat facing the workbench is a semicircular end, and the semicircular end and both sides of the extended pipe jacking seat are respectively provided with a second arc-shaped groove connected to each other;

[0007] It also includes a bracket, which is telescopically connected between the rear ends of the two bending pipe seats, and the front end of the bracket is provided with a semicircular groove corresponding to the semicircular end of the lengthened top pipe seat.

[0008] Furthermore, a hosting seat is provided on both sides of the front end of the workbench, and the two hosting seats are respectively corresponding to the two bending pipe seats.

[0009] Furthermore, the top of the hosting seat has an arc-shaped groove.

[0010] Furthermore, universal wheels are provided at the bottom of the two bending pipe seats.

[0011] Preferably, the bottoms of the two pipe bending seats are respectively provided with three universal wheels, two universal wheels are respectively provided at the two ends of the bottom of the pipe bending seat, and the other universal wheel is provided in the middle of the bottom of the pipe bending seat.

[0012] Furthermore, when the trolley is positioned away from the workbench, the semicircular end of the extended jacking pipe seat rests against the front end of the workbench.

[0013] Furthermore, a roller is provided at the bottom of the semicircular end.

[0014] Specifically, the workbench is a "convex" shaped workbench.

[0015] Furthermore, a transmission chain is provided on the track, the bottom of the trolley is connected to the transmission chain, and a transmission mechanism for driving the transmission chain is also provided on one end of the track away from the workbench.

[0016] Furthermore, a wall panel is provided on the workbench at the rear end of the bracket, a second hydraulic cylinder is fixed to the rear end of the wall panel, the bracket and the piston rod of the second hydraulic cylinder are connected, and a guide rod is also connected between the bracket and the wall panel.

[0017] The beneficial effects of the utility model are: the structure of the whole equipment is stable and reliable, the bending force is large, it can adapt to the U-shaped bending processing of large-diameter thick-walled steel pipes, and it is not easy to cause deformation of the steel pipe during the processing, and the bending part of the processed steel pipe has a smooth transition. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a working state diagram of the utility model when bending a pipe;

[0020] Figure 3 A schematic structural diagram of the pipe bend seat in the utility model.

[0021] In the figure: workbench 1, pipe bending seat 2, first arc groove 3, first hydraulic cylinder 4, connecting part 5, track 6, trolley 7, extended jacking seat 8, semicircular end 9, bracket 10, hosting seat 11, universal wheel 12, transmission mechanism 13, wall panel 14, second hydraulic cylinder 15. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0023] Combine Figure 1-3 As shown, a U-shaped pipe bending device includes a workbench 1, a pair of pipe bending seats 2 connected to the workbench 1 in an openable and closable manner, and a pipe jacking mechanism arranged at the front end of the workbench 1;

[0024] The inner sides and front ends of the two bending seats 2 are both provided with a first arc-shaped groove 3 that is connected to each other. The rear ends of the two bending seats 2 are respectively rotatably connected to the workbench 1. The workbench 1 on the outer sides of the two bending seats 2 is also rotatably connected to a first hydraulic cylinder 4. The piston rods of the two first hydraulic cylinders 4 are respectively rotatably connected to the connecting parts 5 on the outer sides of the two bending seats 2.

[0025] The pipe jacking mechanism includes a track 6, a trolley 7 connected to the track 6 for forward and backward movement, and an extended pipe jacking seat 8 fixed to the end of the trolley 7. The end of the extended pipe jacking seat 8 facing the workbench 1 is a semicircular end 9. The semicircular end 9 and both sides of the extended pipe jacking seat 8 are respectively provided with a second arc-shaped groove connected thereto.

[0026] It also includes a bracket 10, which is telescopically connected between the rear ends of the two bending seats 2. The front end of the bracket 10 has a semicircular groove corresponding to the semicircular end 9 of the extended top pipe seat 8, so as to facilitate the unloading of the bent steel pipe from the equipment.

[0027] In another embodiment, combined Figure 1 and Figure 2 As shown, a hosting seat 11 is provided on both sides of the front end of the workbench 1. The two hosting seats 11 are respectively arranged to avoid the two bending seats 2. The two hosting seats 11 are used to mount steel pipes.

[0028] In another embodiment, the top of the hosting seat 11 has an arc-shaped groove, so that the steel pipe is not easy to slide when it is mounted on the hosting seat 11, and can be easily detached from the hosting seat 11 under the jacking of the extended jacking seat 8.

[0029] The working principle of the above structure is as follows: the staff places the large-diameter thick-walled steel pipe on the two brackets 10 at the front end of the workbench 1. At this time, the two ends of the steel pipe are respectively abutted against the front end corners of the two bend pipe seats 2, and the trolley 7 drives the extended jacking seat 8 to move toward the workbench 1. The semicircular end 9 of the extended jacking seat 8 abuts against the middle of the steel pipe, that is, the two ends and the middle of the steel pipe are respectively abutted against the first arc groove 3 of the two brackets 10 and the second arc groove of the extended jacking seat 8; as the trolley 7 continues to move closer to the workbench 1, the two ends of the steel pipe are separated. The hosting seat 11, while the bracket 10 is in an extended state at this time, the steel pipe is bent between the two bending seats 2 under the action of the extended jacking seat 8, until the middle of the steel pipe is clamped by the semicircular end 9 and the bracket 10. During this process, both sides of the steel pipe are always located between the first arc groove 3 and the second arc groove and will not fall; then the two bending seats 2 are closed under the action of the first hydraulic cylinder 4 until the steel pipe is bent into a U-shaped tube; after the bending is completed, the two bending seats 2 and the extended jacking seat 8 are reset, the bracket 10 retracts, and the steel pipe can be removed from the equipment.

[0030] The beneficial effects of the above structure are: the entire equipment structure is stable and reliable, the bending force is large, it can adapt to the U-shaped bending processing of large-diameter thick-walled steel pipes, and it is not easy to cause deformation of the steel pipe during the processing, and the bends of the processed steel pipes have a smooth transition.

[0031] In another embodiment, Figure 3 As shown, the bottom of the two bending seats 2 are also provided with universal wheels 12 to raise the height of the bending seat 2 and reduce the friction between the bending seat 2 and the workbench 1 when the bending seat 2 moves.

[0032] Preferably, Figure 3 As shown, three universal wheels 12 are respectively provided at the bottom of the two bending seats 2, two universal wheels 12 are respectively provided at the two ends of the bottom of the bending seat 2, and another universal wheel 12 is provided in the middle of the bottom of the bending seat 2.

[0033] In another embodiment, Figure 1 As shown, when the trolley 7 is positioned away from the workbench 1 , the semicircular end 9 of the extended jacking seat 8 rests against the front end of the workbench 1 .

[0034] In another embodiment, a roller is provided at the bottom of the semicircular end 9 to raise the height of the extended pipe jacking seat 8 and reduce the friction between the extended pipe jacking seat 8 and the workbench 1 when the extended pipe jacking seat 8 moves.

[0035] In another embodiment, combined Figure 1 and Figure 2 As shown, the workbench 1 is a convex-shaped workbench to adapt to the moving range of the pipe bending seat 2 and reduce the manufacturing cost of the workbench 1.

[0036] In another embodiment, combined Figure 1 and Figure 2 As shown, a transmission chain is provided on the track 6, the bottom of the trolley 7 is connected to the transmission chain, and a transmission mechanism 13 for driving the transmission chain is also provided on the end of the track 6 away from the workbench 1.

[0037] In another embodiment, combined Figure 1 and Figure 2 As shown, a wall panel 14 is provided on the workbench 1 at the rear end of the bracket 10, a second hydraulic cylinder 15 is fixed to the rear end of the wall panel 14, the bracket 10 and the piston rod of the second hydraulic cylinder 15 are connected, and a guide rod is also connected between the bracket 10 and the wall panel 14.

Claims

1. A U-shaped pipe bending device, characterized in that: It comprises a workbench (1), a pair of pipe bending seats (2) connected to the workbench (1) in an openable and closable manner, and a pipe jacking mechanism arranged at the front end of the workbench (1); The inner sides and front ends of the two pipe bending seats (2) are both provided with a first arc-shaped groove (3) in communication with each other. The rear ends of the two pipe bending seats (2) are respectively rotatably connected to the workbench (1). The workbench (1) outside the two pipe bending seats (2) is also rotatably connected to a first hydraulic cylinder (4). The piston rods of the two first hydraulic cylinders (4) are respectively rotatably connected to the connecting parts (5) outside the two pipe bending seats (2). The pipe jacking mechanism comprises a track (6), a trolley (7) connected to the track (6) for forward and backward movement, and an extended pipe jacking seat (8) fixed to the end of the trolley (7); the end of the extended pipe jacking seat (8) facing the workbench (1) is a semicircular end (9); the semicircular end (9) and both sides of the extended pipe jacking seat (8) are respectively provided with a second arc-shaped groove in communication; It also includes a bracket (10) which is telescopically connected between the rear ends of the two bend pipe seats (2). The front end of the bracket (10) has a semicircular groove corresponding to the semicircular end (9) of the extended top pipe seat (8).

2. A U-shaped pipe bending device as claimed in claim 1, characterized in that: A hosting seat (11) is also provided on both sides of the front end of the workbench (1), and the two hosting seats (11) are respectively arranged in a avoidance manner corresponding to the two bending pipe seats (2).

3. A U-shaped pipe bending device as claimed in claim 2, characterized in that: The top of the hosting seat (11) is provided with an arc-shaped groove.

4. A U-shaped pipe bending device as claimed in claim 3, characterized in that: The bottoms of the two pipe bending seats (2) are both provided with universal wheels (12).

5. A U-shaped pipe bending device as claimed in claim 4, characterized in that: The bottoms of the two pipe bending seats (2) are respectively provided with three universal wheels (12), two universal wheels (12) are respectively arranged at the two ends of the bottom of the pipe bending seat (2), and the other universal wheel (12) is arranged in the middle of the bottom of the pipe bending seat (2).

6. A U-shaped pipe bending device as claimed in claim 5, characterized in that: When the trolley (7) is positioned away from the workbench (1), the semicircular end (9) of the extended jacking pipe seat (8) is placed against the front end of the workbench (1).

7. A U-shaped pipe bending device as claimed in claim 6, characterized in that: A roller is provided at the bottom of the semicircular end (9).

8. A U-shaped pipe bending device as claimed in claim 7, characterized in that: The workbench (1) is a "convex"-shaped workbench.

9. A U-shaped pipe bending device as claimed in claim 8, characterized in that: A transmission chain is provided on the track (6), the bottom of the trolley (7) is connected to the transmission chain, and a transmission mechanism (13) for driving the transmission chain is also provided on one end of the track (6) away from the workbench (1).

10. A U-shaped pipe bending device as claimed in claim 9, characterized in that: A wall panel (14) is provided on the workbench (1) at the rear end of the bracket (10), a second hydraulic cylinder (15) is fixed to the rear end of the wall panel (14), the bracket (10) and the piston rod of the second hydraulic cylinder (15) are connected, and a guide rod is also connected between the bracket (10) and the wall panel (14).

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