Steel pipe arch assembling jig frame

Abstract

The utility model relates to a steel pipe arch assembling jig frame which comprises a jig frame base and a plurality of supporting frames arranged above the jig frame base. Each supporting frame comprises a lifting frame, a lower hoop and an upper hoop, the lower hoops are fixed to the top ends of the lifting frames, the upper hoops are arranged above the lower hoops and detachably connected with the lower hoops through first bolts, a plurality of second bolts in one-to-one correspondence with the supporting frames are arranged on the top face of the jig frame base, and the lifting frames are rotatably and movably arranged on the outer sides of the corresponding second bolts in a sleeving mode. Relative fixation with the second bolt is realized through the second nut; according to the jig frame, jig frame transformation and welding fixation can be omitted, the production operation efficiency is improved, the labor cost needed for assembling and disassembling a traditional jig frame is saved, the material cost needed for pre-assembling is saved, welding fixation between the jig frame and the steel pipe is omitted, the risk of damage to base metal is avoided, and the manufacturing quality of the steel pipe arch is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe arch manufacturing technical field especially relates to a kind of steel pipe arch assembling jig frame. BACKGROUND

[0002] Steel pipe concrete arch bridge is widely used in bridge design because of its superior mechanical properties and aesthetics. In order to obtain the structural stiffness required by the arch rib, the steel pipe arch rib mostly adopts curved truss structure. In the processing of steel pipe arch, the steel pipe arch bridge mostly uses 2-3 meters of steel pipe to splice into arch unit in the form of straight instead of curved, and is generally made into 12 meters in the factory.

[0003] Because the steel pipe arch has the characteristics of linear, the jig frame needs to be modified once every time a segment is spliced during construction, resulting in a large amount of labor and material waste, and serious time consumption. At the same time, in order to ensure the accuracy of the steel pipe butt joint, a code plate is used to fix the ring opening position, which can easily cause damage to the steel pipe parent material when the code plate is cut off, and the welding stress is too large. Therefore, a universal jig frame and a code plate-free design method are used to solve the above problems.

[0004] According to the traditional manufacturing process of steel pipe concrete arch bridge, the jig frame is made according to the size and linear of the steel pipe, the steel pipe is connected with the jig frame and the ground, and the ring opening position is welded and fixed after using the code plate. After welding is completed, the code plate and the connection between the jig frame and the steel pipe are removed. When the next welding is carried out, the jig frame position needs to be rearranged according to the linear.

[0005] Because the steel pipe arch itself has a curve, the jig frame needs to be modified once every time a segment is spliced during construction, resulting in a large amount of labor and material waste, and serious time consumption. At the same time, in order to ensure the accuracy of the steel pipe butt joint, a code plate is used to fix the ring opening position, which can easily cause damage to the steel pipe parent material when the code plate is cut off, and the welding stress is too large.

[0006] Therefore, the utility model provides a kind of steel pipe arch assembling jig frame to solve the above problems. INVENTION CONTENTS

[0007] The technical problem to be solved by the utility model is to provide a kind of steel pipe arch assembling jig frame, to solve the problem of re-removing the assembling jig frame every time steel pipe is spliced, and too much positioning welding, which can easily cause damage to the parent material.

[0008] To solve the above technical problems, the technical scheme of the utility model is as follows: a kind of steel pipe arch assembling jig frame, the innovation point is that it comprises a jig frame base and a plurality of support frames arranged above the jig frame base.

[0009] The support frame comprises a lifting frame, a lower hoop and an upper hoop, the lower hoop is fixed at the top end of the lifting frame, the upper hoop is arranged above the lower hoop and is detachably connected with the lower hoop through a first bolt, a plurality of second bolts corresponding to the support frames are arranged on the top surface of the tire frame base, the lifting frame is movably sleeved outside the corresponding second bolt and is relatively fixed with the second bolt through a second nut.

[0010] Further, the tire frame base comprises a plurality of mutually parallel longitudinal I-beams, the longitudinal I-beams correspond to the second bolts one by one, the second bolts are fixedly connected to the middle part of the top surface of the corresponding longitudinal I-beams, two pairs of mutually parallel transverse I-beams are arranged between the adjacent two longitudinal I-beams, the transverse I-beams are perpendicular to the longitudinal I-beams, and the two ends of each transverse I-beam are fixedly connected with the end part of the longitudinal I-beam on the same side.

[0011] Further, a reinforcing I-beam is arranged between the two pairs of transverse I-beams, the reinforcing I-beam is parallel to the transverse I-beams, and the two ends of the reinforcing I-beam are connected with the longitudinal I-beams on the same side at the positions where the longitudinal I-beams are connected with the second bolts.

[0012] Further, the lifting frame comprises a bolt sleeve, a horizontal beam, and a plurality of vertical I-beams, the horizontal beam is arranged above the bolt sleeve through a diagonal support and is perpendicular to the central axis of the bolt sleeve, the plurality of vertical I-beams are uniformly fixed on the top surface of the horizontal beam and are perpendicular to the horizontal beam, the top ends of the vertical I-beams form an arc structure matched with the shape of the lower hoop, and the lower hoop is fixed at the top end of each vertical I-beam.

[0013] Further, the horizontal beam is formed by two mutually parallel horizontal I-beams arranged side by side, and the middle web of the vertical I-beam is arranged along the joint seam of the two horizontal I-beams.

[0014] Further, a reinforcing arc rib plate is arranged outside the upper hoop and is fixedly connected with the middle part of the outer wall of the upper hoop perpendicularly.

[0015] The tire frame has the advantages that:

[0016] The tire frame is used for detachable connection of the upper hoop and the lower hoop of the steel pipe, the second bolts are arranged on the tire frame base, the lifting frame at the bottom of the support frame is movably sleeved outside the corresponding second bolt, the support frame can be freely horizontally rotated on the tire frame base to realize linear adjustment, after the linear adjustment, the second nut is tightened to realize linear fixation of the support frame, the tire frame can be free from reform and welding fixation, the production operation efficiency is improved, the labor cost required for assembly and disassembly of the traditional tire frame is saved, the material cost required for pre-assembly is saved, the welding fixation between the tire frame and the steel pipe is avoided, the risk of damage to the base material is avoided, and the manufacturing quality of the steel pipe arch is improved.

[0017] The base of this utility model is formed by splicing longitudinal and transverse I-beams, which has a simple structure, strong stability, and is easy to manufacture.

[0018] This utility model improves the stability of the jig base and prevents deformation by setting up a reinforcing I-beam at the connection between the longitudinal I-beam and the second bolt, and also enhances the structural strength and load-bearing capacity of the jig base at the second bolt.

[0019] The lifting frame of this utility model is assembled from bolt sleeves, horizontal beams, diagonal braces and vertical I-beams. It has good structural stability, and the vertical I-beams are easy to process into an arc-shaped structure that matches the shape of the lower clamp. Furthermore, the structural characteristics of the I-beams ensure the connection strength between the lifting frame and the lower clamp.

[0020] The horizontal beam of this utility model is formed by splicing two parallel horizontal I-beams together, which improves the structural strength of the horizontal beam. Moreover, the splice joint formed between the two horizontal I-beams facilitates the arrangement and positioning of the vertical I-beams.

[0021] The upper clamp of this invention has a reinforced arc-shaped rib plate on its outer side, which improves the structural strength of the upper clamp and reduces the probability of deformation. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a schematic diagram of the steel pipe arch assembly frame of this utility model.

[0024] Figure 2 This is a side view of the steel pipe arch assembly frame of this utility model.

[0025] Figure 3 This is an application scenario diagram of the steel pipe arch assembly frame of this utility model. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0027] This embodiment provides a steel pipe arch assembly frame, such as Figures 1-2 As shown, it includes a tire frame base 1 and two support frames 2 disposed above the tire frame base 1.

[0028] The tire frame base 1 comprises two mutually parallel longitudinal I-beams 11, two pairs of mutually parallel transverse I-beams 12 are arranged between the adjacent two longitudinal I-beams 11, the transverse I-beams 12 are perpendicular to the longitudinal I-beams 11, the two ends of each transverse I-beam 12 are fixedly connected with the end of the same side longitudinal I-beam 11 by welding, a reinforcing I-beam 13 is arranged between the two pairs of transverse I-beams 12, the reinforcing I-beam 13 is parallel to the transverse I-beam 12, the two ends of the reinforcing I-beam 13 are fixedly connected with the middle part of the same side longitudinal I-beam 11 by welding, and the longitudinal I-beam 11, the transverse I-beam 12 and the reinforcing I-beam 13 are spliced to form a herringbone frame structure. Two second bolts 14 corresponding to each support frame are arranged on the top surface of the tire frame base 1, the second bolts 14 correspond to the longitudinal I-beams 12, each second bolt 14 is arranged at the splicing position of the corresponding longitudinal I-beam and the reinforcing I-beam, and is fixedly welded on the top surface of the corresponding longitudinal I-beam 12 with the vertical central axis.

[0029] The support frame 2 comprises a lifting frame, a lower hoop 25 and an upper hoop 26. The lifting frame comprises a bolt sleeve 21, a horizontal beam 23, five vertical I-beams 24, the bolt sleeve 21 is rotatably sleeved outside the corresponding second bolt 21, and is fixed relative to the second bolt 21 through the second nut 15. After the bolt sleeve 21 is sleeved outside the second bolt 21, the second nut 15 is arranged above the bolt sleeve 21 and is threadedly connected with the second bolt 21, the relative fixation between the bolt sleeve 21 and the second nut 15 is realized by tightening the second nut 15, and the relative fixation between the support frame 2 and the tire frame base 1 is realized. The horizontal beam 23 is formed by parallel welding of two mutually parallel horizontal I-beams, the horizontal beam 23 is arranged above the bolt sleeve 21 through the inclined support 22, and is perpendicular to the central axis of the bolt sleeve 21, the inclined support 22 has two sides and is arranged on the two sides of the bolt sleeve 21, the inclined support 22 is inclined from top to bottom to the direction close to the bolt sleeve 21, the bottom end of the inclined support 22 is fixedly connected with the side wall of the bolt sleeve 21 by welding, and the top end is connected with the bottom surface of the horizontal beam 23, the five vertical I-beams 24 are fixedly welded on the top surface of the horizontal beam 23 and are perpendicular to the horizontal beam 23, and the middle web of the vertical I-beam 24 is arranged along the splicing joint of the two horizontal I-beams. The top end of the five vertical I-beams 24 forms an arc-shaped structure matched with the shape of the lower hoop 25. The lower hoop 25 is fixedly welded at the top end of each vertical I-beam 24. The upper hoop 26 is arranged above the lower hoop and is detachably connected with the lower hoop 25 through the first bolt. The outer side of the upper hoop 26 is provided with a reinforcing arc-shaped rib plate 27, and the reinforcing arc-shaped rib plate 27 is fixedly connected with the outer wall of the upper hoop 26 by vertical welding.

[0030] Working principle: as Figure 3As shown, when the steel pipe arch is assembled, according to the length of the steel pipe arch, a corresponding number of cradles are arranged on the ground or construction platform, the angle of the support frame on each cradle is adjusted, the support frames on each cradle are fixed according to the linear shape of the steel pipe arch, the short pipes of the steel pipe arch are placed on the lower hoop of the cradle, the two ends of the same short pipe are supported by the two support frames on the adjacent two cradles, the splicing position of the adjacent two short pipes is located between the two support frames of the same cradle, after each short pipe is placed in place, the upper hoop of each cradle is installed, the first bolt is used to connect the upper hoop and the lower hoop, the steel pipe arch is fixed with the whole cradle, and then the butt joint of the steel pipe arch is welded.

[0031] The cradle of the utility model is used for detachable connection of the upper hoop and the lower hoop of the steel pipe, and the second bolt is arranged on the cradle base, the lifting frame at the bottom of the support frame is rotatably movably sleeved outside the corresponding second bolt, so that the support frame can be freely horizontally rotated above the cradle base for linear adjustment, and after linear adjustment, the second nut is tightened to realize linear fixation of the support frame, the cradle can avoid cradle modification and welding fixation, improve production operation efficiency, save labor cost required for assembly and removal of the traditional cradle, save material cost required for pre-assembly, avoid welding fixation between the cradle and the steel pipe, avoid the risk of damage to the base material, and improve the production quality of the steel pipe arch.

[0032] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above, however, it is not used to limit the utility model, any person skilled in the art can make some changes or modifications as equivalent embodiments within the scope of the technical scheme of the utility model, as long as it does not deviate from the technical scheme of the utility model, any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model, still belongs to the scope of the technical scheme of the utility model.

Claims

1. An assembly jig for a steel pipe arch, characterized by: The tire rack base and a plurality of support frames arranged above the tire rack base; The support frame comprises a lifting frame, a lower hoop and an upper hoop. The lower hoop is fixed at the top end of the lifting frame. The upper hoop is arranged above the lower hoop and is detachably connected with the lower hoop through a first bolt. A plurality of second bolts corresponding to the support frames are arranged on the top surface of the tire rack base. The lifting frame is rotatably sleeved outside the corresponding second bolt and is relatively fixed with the second bolt through a second nut.

2. The steel pipe arch assembly jig according to claim 1, characterized by: The tire rack base comprises a plurality of longitudinal I-beams parallel to each other. The longitudinal I-beams correspond to the second bolts. The second bolts are fixedly connected to the middle part of the top surface of the corresponding longitudinal I-beams. Two pairs of transverse I-beams parallel to each other are arranged between the adjacent two longitudinal I-beams. The transverse I-beams are perpendicular to the longitudinal I-beams. The two ends of each transverse I-beam are fixedly connected with the end part of the longitudinal I-beam on the same side.

3. The steel pipe arch assembly jig of claim 2, wherein: A reinforcing I-beam is arranged between the two pairs of transverse I-beams. The reinforcing I-beam is parallel to the transverse I-beams. The two ends of the reinforcing I-beam are connected with the connection part of the longitudinal I-beam on the same side and the second bolt.

4. The steel pipe arch assembly jig of claim 1, wherein: The lifting frame comprises a bolt sleeve, a horizontal beam and a plurality of vertical I-beams. The horizontal beam is arranged above the bolt sleeve through a diagonal support and is perpendicular to the central axis of the bolt sleeve. The plurality of vertical I-beams are uniformly fixed on the top surface of the horizontal beam and are perpendicular to the horizontal beam. The top end of the vertical I-beam forms an arc-shaped structure matched with the outer shape of the lower hoop. The lower hoop is fixed at the top end of the vertical I-beam.

5. The steel pipe arch assembly jig of claim 4, wherein: The horizontal beam is formed by two horizontal I-beams parallel to each other. The middle web of the vertical I-beam is arranged along the joint seam of the two horizontal I-beams.

6. The steel pipe arch assembly jig of claim 1, wherein: A reinforcing arc-shaped rib plate is arranged outside the upper hoop. The reinforcing arc-shaped rib plate is fixedly connected with the middle part of the outer wall of the upper hoop perpendicularly.

Images