CN104174722A

CN104174722A - Pipe bending device for pipe truss

Info

Publication number: CN104174722A
Application number: CN201410341623.5A
Authority: CN
Inventors: 韩向科; 孙伟; 张侃; 司坤; 赵辉; 刘明路; 王馥琴; 贾文彬
Original assignee: MCC Tiangong Group Corp Ltd; CMTCC Shanghai Shisanye Construction Co Ltd
Current assignee: China MCC20 Group Corp Ltd; Shanghai Ershiye Construction Co Ltd
Priority date: 2014-07-18
Filing date: 2014-07-18
Publication date: 2014-12-03
Anticipated expiration: 2034-07-18
Also published as: CN104174722B

Abstract

The invention relates to the field of pipe truss component manufacturing, in particular to a pipe bending device for a pipe truss. The pipe bending device comprises a horizontally paved substrate and a hydraulic pushing device located on one side of the substrate. The pipe bending device is characterized by further comprising a pipe bending pushing module, pipe bending limit modules and pipe bending counterforce modules, wherein the two pipe bending limit modules adopt a center line of the substrate as a symmetry axis and are fixed on two sides of the top surface of the substrate; the two pipe bending counterforce modules adopt the center line of the substrate as the symmetry axis and are fixed on two sides of the top surface of the substrate and located on the outer sides of the pipe bending limit modules; and the pipe bending pushing module is located at the top of the substrate, a center line of the pipe bending pushing module is coaxial with that of the substrate, and the pipe bending pushing module is driven by the hydraulic pushing device to reciprocate along the center line of the substrate. According to the pipe bending device for the pipe truss, radial deformation amplitude of the pipe length of the pipe truss is reduced while the pipe radian of the pipe truss is changed, so that the damage probability of the pipe of the pipe truss in pipe bending operation is reduced.

Description

The swan neck system of pipe truss

Technical field

The present invention relates to pipe trussmember and make field, be specially a kind of swan neck system of pipe truss.

Background technology

Pipe truss Steel Structure, in the time of construction, often needs for the performance of building, requires pipe fitting to carry out bending.Due to the defect of traditional bent tube technique, when bending, bending point place generally there will be radial deformation, once there is radial deformation phenomenon, will affect the making quality of pipe truss, even causes pipe fitting to cancel.

Specifically: in traditional traditional cold bending process, pipe bending has following shortcoming:

(1) pushing tow point is less with tube wall contact-making surface, for large, the relative thinner pipe of tube wall of diameter, easily causes the cripling at pushing tow point place.

(2) pushing reaction point place, for " put and contact ", there is problem of stress concentration with counter-force point in tube wall, often causes tube wall surface scratch, cut, peeling paint, can cause local dent for indivedual thin-wall pipes.

(3) pushing reaction point place, tube wall and counter-force point are direct hard spot CONTACT WITH FRICTION, in the time that pipe is bending, the length of bend pipe between two counter-force points can change a lot, between two counter-force points, can produce axial deformation, under pushing tow pressure-acting, tube wall is put tightly compacted contact with counter-force simultaneously, make the axial deformation between counter-force point be difficult to discharge, therefore cause bend pipe radian, curvature deviation to some extent.

(4), at pushing reaction point place, without vertical spacing retaining device, in the time that Tube Bending Deformation is larger, under the effect of vertical force component, the vertical spring that easily produces bend pipe is de-, causes security incident.

Summary of the invention

The present invention is intended to address the aforementioned drawbacks, and a kind of swan neck system for pipe truss is provided, the radial deformation at bending point place when it can improve bend pipe, thus effectively improve bending quality.

In order to achieve the above object, the present invention is achieved in that

A swan neck system for pipe truss, it comprises the substrate that level is laid and is positioned at the hydraulic top pushing device of substrate one side, it is characterized in that: also comprise bend pipe pushing module, the spacing module of bend pipe and bend pipe counter-force module;

Bend pipe pushing module comprises that some sections of cross sections are circular-arc and horizontally disposed bend pipe top board, some and vertically arrange and be fixed on the floor of putting more energy at each bend pipe top board back, the vertical backup plate that arranges and be fixedly connected with the floor of respectively putting more energy into; Hydraulic top pushing device is fixedly connected with backup plate;

The spacing module of bend pipe comprises bend pipe limiting plate, limiting plate bearing and bearing pin, bend pipe limiting plate comprises vertical riser and is positioned at the horizontal clamp at riser middle part, both are an entirety, limiting plate bearing comprises two spaced clamping plate of central tool, clamping plate with on bend pipe limiting plate, all have a coaxial and identical through hole of diameter and pass for bearing pin, bend pipe limiting plate is located in the interval between two clamping plate, and bearing pin is through in three's through hole;

Bend pipe counter-force module comprises the support plate of vertical setting, be positioned at support plate top and bottom and horizontally disposed rotating shaft fixed head, on described two rotating shaft fixed heads, having the coaxial and identical through hole of diameter settles for rotating shaft, bend pipe reaction plate is rotationally connected with two rotating shaft fixed heads by the rotating shaft of its top and bottom setting, and bend pipe reaction plate is arranged with three pairs of floors of putting more energy on a side of support plate;

The spacing module of above-mentioned bend pipe has two, is fixed on substrate top surface both sides taking the center line of substrate as symmetry axis;

Above-mentioned bend pipe counter-force module has two, and be fixed on substrate top surface both sides taking the center line of substrate as symmetry axis and be positioned at the outside of bend pipe counter-force module,

It is coaxial that above-mentioned bend pipe pushing module is positioned at substrate top and the center line of bend pipe pushing module and the center line of substrate, and it is driven and moved back and forth along base center line by hydraulic top pushing device.

The swan neck system of described pipe truss, in bend pipe limiting plate, the intersection of riser and horizontal clamp arranges rounding, and the diameter of rounding is identical with the diameter of tubing in pipe truss.

The swan neck system of described pipe truss, is characterized in that: the arc diameter of bend pipe top board is identical with the diameter of tubing in pipe truss.

The present invention adopts above-mentioned design, by with the supporting bend pipe limiting plate of bend pipe diameter and the acting in conjunction of bend pipe reaction plate, when hydraulic top pushing device promotion bend pipe pushing module moves ahead and changes pipe truss tubing radian, reduce the amplitude of the long-living radial deformation of pipe truss tubing, thereby reduced the damaged probability of pipe truss tubing in bend pipe operation.

Brief description of the drawings

Fig. 1 is top view of the present invention.

Fig. 2 be in Fig. 1 A-A to view.

Fig. 3 be in Fig. 1 B-B to view.

Fig. 4 be in Fig. 1 C-C to view.

Detailed description of the invention

Further illustrate the present invention by specific embodiment below.

As shown in Figure 1, there is shown, a kind of swan neck system of pipe truss, it comprises the substrate 12 that level is laid and the hydraulic top pushing device that is positioned at substrate 12 1 sides, it is characterized in that: also comprise bend pipe pushing module, the spacing module of bend pipe and bend pipe counter-force module;

As shown in Figure 2, bend pipe pushing module comprises that some sections of cross sections are circular-arc and horizontally disposed bend pipe top board 1, some and vertically arrange and be fixed on the floor 3 of putting more energy at each bend pipe top board 1 back, the vertical backup plate 2 that arranges and be fixedly connected with the floor 3 of respectively putting more energy into; Hydraulic top pushing device is fixedly connected with backup plate 2;

As shown in Figure 3, the spacing module of bend pipe comprises bend pipe limiting plate 4, limiting plate bearing and bearing pin 6, bend pipe limiting plate 4 comprises vertical riser and is positioned at the horizontal clamp at riser middle part, both are an entirety, limiting plate bearing comprises two spaced clamping plate 5 of central tool, clamping plate 5 with on bend pipe limiting plate 4, all have a coaxial and identical through hole of diameter and pass for bearing pin 6, bend pipe limiting plate 4 is located in the interval between two clamping plate 5, bearing pin 6 is through in three's through hole;

As shown in Figure 4, bend pipe counter-force module comprises the support plate 9 of vertical setting, be positioned at support plate 9 tops and bottom and horizontally disposed rotating shaft fixed head 10, on described two rotating shaft fixed heads 10, having the coaxial and identical through hole of diameter settles for rotating shaft 11, bend pipe reaction plate 7 is rotationally connected with two rotating shaft fixed heads 10 by the rotating shaft 11 of its top and bottom setting, and bend pipe reaction plate 7 is arranged with three pairs of floors 8 of putting more energy on a side of support plate 9;

As shown in Figure 1, the spacing module of above-mentioned bend pipe has two, is fixed on substrate top surface both sides taking the center line of substrate as symmetry axis;

As shown in Figure 1, above-mentioned bend pipe counter-force module has two, and be fixed on substrate top surface both sides taking the center line of substrate as symmetry axis and be positioned at the outside of bend pipe counter-force module,

As shown in Figure 1, it is coaxial that above-mentioned bend pipe pushing module is positioned at substrate top and the center line of bend pipe pushing module and the center line of substrate, and it is driven and moved back and forth along base center line by hydraulic top pushing device.

The swan neck system of described pipe truss as shown in Figure 3, in bend pipe limiting plate, the intersection of riser and horizontal clamp arranges rounding, and the diameter of rounding is identical with the diameter of tubing in pipe truss.

As shown in Figure 2, the swan neck system of described pipe truss, is characterized in that: the arc diameter of bend pipe top board 1 is identical with the diameter of tubing in pipe truss.

The present invention is directed to traditional pipe bending apparatus and method, there is following advantage:

(1) pushing tow point adopts space curved surface, semicircular arc bend pipe top board 1, adopts corresponding pushing tow curved surface bent plate 1 according to different calibers, can contact with pipe is seamless, and effectively enlarge active surface, reduces local stress, effectively avoids the cripling at pushing tow point place;

Meanwhile, in bend pipe top board 1 outer ring, backup plate 2 is set and strengthens, the normal deformation of operative constraint bend pipe pushing tow place pipe, effectively avoids pushing tow point place " circularity " to exceed standard, and further ensures bending quality, improves bend pipe efficiency.

(2) at counter-force point place, reaction plate 7 is set, replace " the some contact " in traditional handicraft with " line contact ", effectively improve bend pipe wall and counter-force and put local contact condition, greatly alleviate the problem of stress concentration at bend pipe pushing reaction point place, avoid the phenomenons such as tube wall surface scratch, cut, peeling paint, effectively improve bending quality.

(3) at pushing reaction point place, rotary reaction plate 7 is set, as shown in Figure 4, in the time that bend pipe is bending, reaction plate 7 can be according to different bend pipe curvature automatic rotations, adjustment displacement, effectively discharge the axial deformation between counter-force point, overcome the direct hard spot CONTACT WITH FRICTION between tube wall and counter-force point from design, bend pipe radian, curvature precision significantly improve.

(4) at counter-force point place, vertical bend pipe limiting plate 4 is set, even if Tube Bending Deformation is larger, also can effectively prevents that vertical spring of bend pipe from taking off, and greatly improves the security performance of swan neck system.

Claims

1. a swan neck system for pipe truss, it comprises the substrate that level is laid and is positioned at the hydraulic top pushing device of substrate one side, it is characterized in that: also comprise bend pipe pushing module, the spacing module of bend pipe and bend pipe counter-force module;

2. the swan neck system of pipe truss according to claim 1, is characterized in that: in bend pipe limiting plate, the intersection of riser and horizontal clamp arranges rounding, and the diameter of rounding is identical with the diameter of tubing in pipe truss.

3. the swan neck system of pipe truss according to claim 1, is characterized in that: the arc diameter of bend pipe top board is identical with the diameter of tubing in pipe truss.