CN209817271U - Automatic arching device for parallel chord truss - Google Patents
Automatic arching device for parallel chord truss Download PDFInfo
- Publication number
- CN209817271U CN209817271U CN201920219633.XU CN201920219633U CN209817271U CN 209817271 U CN209817271 U CN 209817271U CN 201920219633 U CN201920219633 U CN 201920219633U CN 209817271 U CN209817271 U CN 209817271U
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- Prior art keywords
- arc
- truss
- shaped groove
- chord
- arching
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- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 3
- 230000001154 acute effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- Rod-Shaped Construction Members (AREA)
Abstract
The utility model discloses an automatic arching device for a parallel chord truss, which comprises an arc-shaped groove base, a support and a truss, wherein the support comprises a support plate and a constraint plate positioned at the top of the support plate; the arc-shaped groove is processed at the top of the arc-shaped groove base, and the arc-shaped groove base is divided into two groups. The arching method based on the device comprises the following steps: determining the arching height; welding two groups of arc-shaped groove bases according to the arching height and the total length of the truss; respectively placing the chord members on the arc-shaped grooves; the vertical rod is placed in the middle of the combination of the tops of the paired supporting plates, the two ends of the vertical rod are respectively welded on the truss, the inclined rod is placed at the top of the restraint plate, and the two ends of the inclined rod are respectively welded on the truss. The utility model discloses realize that the truss is assembled and is encircleed one shot automatic molding, product quality is good, and cost reduction, the degree of arching deviation value is 1-2mm, and work efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of the building, concretely relates to automatic device that arches of parallel chord truss.
Background
In the construction of the steel structure truss, the triangular truss is directly lofted and assembled to form an arch at an equal corner butt joint, the parallel chord truss is often subjected to cold arch forming or heating arch forming, an operation method of applying external force by a jack is used for arch forming, each truss arch forming and arch degree forming are subjected to positioning reference, external force is applied, arch degree is measured, external force is applied again, and the whole operation process is completed repeatedly. The existing arching device has the following defects: the camber and the camber are difficult to form, and the camber cannot be accurately controlled; the arching quality is unstable, the deviation is large, so that the standard and design requirements are difficult to meet, the arching and the arching degree forming of each truss are repeatedly finished by positioning and finding the reference, the whole operation process is time-consuming, the working procedures are complicated, the labor intensity of operators is high, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a device that automatic arching of parallel chord truss that arch degree one-time automatic molding, each pin of truss arch degree size keep same numerical value unchangeable, of high quality and stability is assembled to truss.
The utility model adopts the following technical scheme:
an automatic arching device for parallel chord trusses is characterized by comprising a plurality of arc-shaped groove bases (7), a plurality of supports (11) and trusses; the top of each arc-shaped groove base (7) is provided with an arc-shaped groove (8), the arc-shaped groove bases (7) are divided into two groups, the two groups of arc-shaped groove bases (7) are respectively welded on a steel plate platform in an arc shape, the radians of each group of the two groups of arc-shaped groove bases (7) are the same, the bending directions of the groups of arc-shaped groove bases are the same, the two ends of each group of arc-shaped groove bases (7) are respectively aligned, and the connecting lines; the support (11) is formed by a support plate (9) and a restraint plate (10) in an integrated mode, and the restraint plate (10) is located on the top of the support plate (9); the supports (11) are welded on the steel plate platform between the two groups of arc-shaped groove bases (7) in pairs; the truss is by first truss chord member (1), second truss chord member (2), a plurality of montants (3), a plurality of down tube (4) are constituteed, place respectively on arc wall (8) first truss chord member (1) and second truss chord member (2), montant (3) are placed in the middle of the combination department at backup pad (9) top in pairs, place at about shield (10) top down tube (4), the both ends of montant (3) weld respectively on first truss chord member (1) and second truss chord member (2), the both ends of down tube (4) weld respectively on first truss chord member (1) and second truss chord member (2).
The device is characterized in that the arching height of the first chord member (1) is (0.92/500) - (1.08/500) of the total length of the first chord member (1), and the arching height of the second chord member (2) is (0.92/500) - (1.08/500) of the total length of the second chord member (2).
The device is characterized in that the connecting lines of the vertical rods (3) and the two ends of the first chord member (1) are perpendicular to each other.
The device is characterized in that the included acute angle between the connecting lines of the diagonal member (4) and the two ends of the first chord member (1) is 60-64 degrees.
According to the device, the stiffening ribs (5) are welded and processed on two sides of the lower part of the arc-shaped groove base (7) in pairs.
The device is characterized in that 2-3 pairs of supports (11) are arranged below the vertical rod (3), and 2-3 pairs of supports (11) are arranged below the diagonal rod (4).
According to the device, the device is characterized in that the arc-shaped groove (8) is sleeved with a chord placing base plate (6).
The utility model has the advantages of: the utility model discloses realize that the truss is assembled and is encircleed automatic molding once, be applicable to the parallel chord truss structure arch camber preparation of circular steel and camber shaping, still can popularize and be applied to the parallel chord truss arch camber preparation and the camber shaping of steel pipe, angle steel, square steel and I-shaped steel, product quality is good, cost reduction, the arch camber deviation value is not more than 1-2mm, work efficiency is high, especially the application efficiency is higher in the construction of batch parallel chord truss.
Drawings
FIG. 1 is a schematic view of a parallel truss structure of the present invention;
FIG. 2 is a schematic structural view of the arc-shaped groove base of the present invention;
FIG. 3 is a schematic structural view of the support in the present invention;
fig. 4 is a schematic view of the arching point and the arching height of the truss chord in embodiment 1 of the invention;
fig. 5 is a schematic diagram of arching of the truss in the arching mode of fig. 4 in embodiment 1 of the present invention.
Detailed Description
Referring to fig. 1-3, the device for automatically arching parallel chord trusses of the present invention comprises a plurality of arc-shaped groove bases 7, a plurality of supports 11 and trusses; the top of the arc-shaped groove base 7 is provided with an arc-shaped groove 8, the arc-shaped groove bases 7 are divided into two groups, the two groups of arc-shaped groove bases 7 are respectively welded on a steel plate platform in an arc shape, the radians of each group of the two groups of arc-shaped groove bases 7 are the same, the bending directions of each group of the two groups of arc-shaped groove bases 7 are the same, the two ends of each group of the two groups of arc-shaped groove bases 7 are respectively aligned, the connecting lines of the two ends are mutually parallel, the two sides of the lower part of each group of; the support 11 is formed by a support plate 9 and a restraint plate 10 in an integrated mode, and the restraint plate 10 is located on the top of the support plate 9; the supports 11 are welded on the steel plate platform between the two groups of arc-shaped groove bases 7 in pairs; the truss is composed of a first truss chord 1, a second truss chord 2, a plurality of vertical rods 3 and a plurality of diagonal rods 4, wherein the first truss chord 1 and the second truss chord 2 are respectively placed on arc-shaped grooves 8 at the tops of two groups of arc-shaped groove bases 7, the arching height of the first truss chord 1 is (0.92/500) - (1.08/500) of the total length of the first truss chord 1, and the arching height of the second truss chord 2 is (0.92/500) - (1.08/500) of the total length of the second truss chord 2. The vertical rod 3 is placed in the middle of the combination of the tops of the paired supporting plates 9, 2-3 pairs of supporting seats 11 are arranged below the vertical rod 3, the inclined rod 4 is placed at the top of the restraint plate 10, and 2-3 pairs of supporting seats 11 are arranged below the inclined rod 4. The two ends of the vertical rod 3 are welded on the first truss chord member 1 and the second truss chord member 2 respectively, and the connecting lines of the vertical rod 3 and the two ends of the first truss chord member 1 are perpendicular to each other. The two ends of the diagonal member 4 are respectively welded on the first chord member 1 and the second chord member 2, and the acute angle degree included by the connecting line of the diagonal member 4 and the two ends of the first chord member 1 is 60-64 degrees.
The utility model provides an arch camber method based on the utility model discloses the device includes following step: the method comprises the following steps: determining the arching height of the first chord 1 and the arching height of the second chord 2, wherein the arching height of the first chord 1 is (0.92/500) - (1.08/500) of the total length of the first chord 1, and the arching height of the second chord 2 is (0.92/500) - (1.08/500) of the total length of the second chord 2; step two: according to the total length and arching height of the first truss chord member 1 and the total length and arching height of the second truss chord member 2 in the first step, two groups of arc-shaped groove bases 7 are respectively welded on a steel plate platform in an arc shape, the radian of each group of the two groups of arc-shaped groove bases 7 is the same, the bending direction is the same, two ends of each group of arc-shaped groove bases 7 are respectively aligned, and connecting lines of the two ends are parallel to each other; step three: respectively placing the first chord member 1 and the second chord member 2 on the arc-shaped grooves 8 at the tops of the two groups of arc-shaped groove bases 7; step four: welding the support seats 11 on the steel plate platform between the two groups of arc-shaped groove bases 7 in pairs, placing the vertical rods 3 in the middle of the combination of the tops of the paired support plates 9, and placing the inclined rods 4 on the tops of the restraint plates 10; step five: the two ends of the vertical rod 3 are welded to the first chord member 1 and the second chord member 2 respectively, and the two ends of the diagonal rod 4 are welded to the first chord member 1 and the second chord member 2 respectively.
Example 1
The length of parallel chord truss is 36 meters, first chord member and second chord member are 36 meters, the arching height of chord member is 1/500 of chord member total length, the arching height of chord member is 72mm promptly, according to the length of chord member and arching height, be arc welding respectively with two sets of arc groove bases on the steel sheet platform, during the welding, see fig. 4 and fig. 5, arc groove base of every 3 meters welding in the both sides of the 18 meters department of midpoint of chord member, the welding point and the welding height of two sets of arc groove bases are respectively: 18000mm and 72 mm; 15000mm, 60 mm; 12000mm, 48 mm; 9000mm and 36 mm; 6000mm and 24 mm; 3000mm, 12 mm; 0mm and 0 mm. Respectively placing the first chord member and the second chord member on the arc-shaped grooves 8 at the tops of the two groups of arc-shaped groove bases; welding the support seats on the steel plate platform between the two groups of arc-shaped groove bases in pairs, placing the vertical rod in the middle of the combination of the tops of the paired support plates, and placing the inclined rod on the tops of the restraint plates; the two ends of the vertical rod are welded on the first truss chord member and the second truss chord member respectively, and the two ends of the diagonal rod are welded on the first truss chord member and the second truss chord member respectively. In the embodiment 1, the truss is assembled and arched at one time, and the arch camber deviation value is 1 mm.
Claims (7)
1. An automatic arching device for parallel chord trusses is characterized by comprising a plurality of arc-shaped groove bases (7), a plurality of supports (11) and trusses; the top of each arc-shaped groove base (7) is provided with an arc-shaped groove (8), the arc-shaped groove bases (7) are divided into two groups, the two groups of arc-shaped groove bases (7) are respectively welded on a steel plate platform in an arc shape, the radians of each group of the two groups of arc-shaped groove bases (7) are the same, the bending directions of the groups of arc-shaped groove bases are the same, the two ends of each group of arc-shaped groove bases (7) are respectively aligned, and the connecting lines; the support (11) is formed by a support plate (9) and a restraint plate (10) in an integrated mode, and the restraint plate (10) is located on the top of the support plate (9); the supports (11) are welded on the steel plate platform between the two groups of arc-shaped groove bases (7) in pairs; the truss is by first truss chord member (1), second truss chord member (2), a plurality of montants (3), a plurality of down tube (4) are constituteed, place respectively on arc wall (8) first truss chord member (1) and second truss chord member (2), montant (3) are placed in the middle of the combination department at backup pad (9) top in pairs, place at about shield (10) top down tube (4), the both ends of montant (3) weld respectively on first truss chord member (1) and second truss chord member (2), the both ends of down tube (4) weld respectively on first truss chord member (1) and second truss chord member (2).
2. The device according to claim 1, wherein the arching height of the first chord (1) is (0.92/500) - (1.08/500) of the total length of the first chord (1), and the arching height of the second chord (2) is (0.92/500) - (1.08/500) of the total length of the second chord (2).
3. A device according to claim 1, characterised in that the vertical bars (3) are perpendicular to the line connecting the ends of the first chord (1).
4. A device according to claim 3, wherein the angle between the diagonal member (4) and the line connecting the ends of the first chord member (1) is 60 ° -64 °.
5. The device according to claim 1, characterized in that the stiffening ribs (5) are welded in pairs on both sides of the lower part of the arc-shaped groove base (7).
6. Device according to claim 1, characterized in that 2-3 pairs of seats (11) are provided under the vertical bars (3) and 2-3 pairs of seats (11) are provided under the diagonal bars (4).
7. Device according to claim 1, characterized in that the arc-shaped slot (8) is sheathed with a chord placing mat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920219633.XU CN209817271U (en) | 2019-02-21 | 2019-02-21 | Automatic arching device for parallel chord truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920219633.XU CN209817271U (en) | 2019-02-21 | 2019-02-21 | Automatic arching device for parallel chord truss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209817271U true CN209817271U (en) | 2019-12-20 |
Family
ID=68873442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920219633.XU Withdrawn - After Issue CN209817271U (en) | 2019-02-21 | 2019-02-21 | Automatic arching device for parallel chord truss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209817271U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707100A (en) * | 2019-02-21 | 2019-05-03 | 金川集团股份有限公司 | A kind of device and arch camber method of the automatic arch camber of parallel chord truss |
| CN113250469A (en) * | 2021-04-29 | 2021-08-13 | 金川集团股份有限公司 | Double-angle steel chord arching control device |
-
2019
- 2019-02-21 CN CN201920219633.XU patent/CN209817271U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707100A (en) * | 2019-02-21 | 2019-05-03 | 金川集团股份有限公司 | A kind of device and arch camber method of the automatic arch camber of parallel chord truss |
| CN109707100B (en) * | 2019-02-21 | 2024-06-18 | 金川集团股份有限公司 | Automatic arching device and method for parallel chord trusses |
| CN113250469A (en) * | 2021-04-29 | 2021-08-13 | 金川集团股份有限公司 | Double-angle steel chord arching control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191220 Effective date of abandoning: 20240618 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191220 Effective date of abandoning: 20240618 |