CN1916331A - Composite type safety fastener in material of steel cover and iron seat - Google Patents
Composite type safety fastener in material of steel cover and iron seat Download PDFInfo
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- CN1916331A CN1916331A CN 200610095073 CN200610095073A CN1916331A CN 1916331 A CN1916331 A CN 1916331A CN 200610095073 CN200610095073 CN 200610095073 CN 200610095073 A CN200610095073 A CN 200610095073A CN 1916331 A CN1916331 A CN 1916331A
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- cover plate
- fastener
- pedestal
- steel
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Abstract
The present invention relates to a kind of steel-cover iron-seat material composite type safe fastener. It is characterized by that it includes cover plate and base seat. The cover plate is movable connected on the base seat by means of pin shaft or bolt, said cover plate is a press-moulded component by using steel plate, and said base seat is a cast-iron component, on the cover plate an outwards-projected reinforcing rib is transversely set, and the length of said cover plate at least is 2/3 of tength of said base seat.
Description
Technical field
The invention belongs to the construction implement technical field, specifically, relate to the employed fastener of pedestal that scaffold, falsework, bracing frame, bearing frame etc. connect with steel tube in a kind of building operations.
Background technology
At present, adopting steel pipe to set up the most frequently used fastener of pedestal in the building operations has two kinds, and a kind of is by national standard " steel tube scaffold clasp GB15831-1995 ", the malleable cast iron fastener that adopts casting technique to produce, be full cast iron fastener, this fastener reaches more than 95% in the occupation rate on the market; Another kind is by industry standard " steel plate punching press fastener JG3061-1999 ", the fastener that adopts the whole steel sheet cold punching technology to produce, i.e. whole steel sheet fastener, the occupation rate of market less than 5% of this fastener.
The quality of fastener depends on the height of mechanical performance indexs such as its antiskid, anti-destruction, antitorque commentaries on classics, and these mechanical performance indexs are closely related with manufactured materials, product structure and the production technology of fastener.Complete its casting technique uncontrollable factor of cast iron fastener is many, and error is big, the fastener unstable properties, the batch process qualification rate is low, adds the unreasonable of structure, and fastener is the fastener cover plate especially, in use rupture easily, this is the major reason that causes the scaffold cave-in accident.The appearance of whole steel sheet fastener, solved the problem that fracture in use takes place full cast iron fastener easily effectively, but owing to himself material and structure shortcoming, the torsional rotation force of whole steel sheet fastener is learned performance and is lower than full cast iron fastener, fastener in use with use the back easy deformation, reduced the anti-slide performance of product, and repeat usage is low, be the twice of full cast iron fastener at least because of its price again, so market is low to its acceptance level.
Summary of the invention
The problem to be solved in the present invention provides a kind of both anti-breaking, antiskid, can not be out of shape again, the composite type safety fastener in material of steel cover and iron seat that security performance is good, price is suitable.
For solving the problems of the technologies described above, the technical solution used in the present invention is: make a kind of composite type safety fastener in material of steel cover and iron seat, this fastener has cover plate and pedestal, cover plate is movably connected on the pedestal by pivot pin or bolt, cover plate is the whole punch forming part of steel plate, and pedestal is the cast molding ironcasting.
Because pedestal mainly plays the balance support effect in the fastener, and cover plate is main stressed member, cover plate adopts steel plate to make through cold stamping or drop stamping technology, the good toughness of steel plate, be that cold draw is good, it is 2.6 times of malleable cast iron, and the fabrication error of steel plate is little, the stressed the best part of fastener is that cover plate has stronger anti-fracture energy in having guaranteed to use, and has eliminated the danger that fastener in use ruptures.Adopt the manufactured materials of malleable cast iron, given full play to cast iron materials rigidity and the good advantage of setting power as pedestal.The present invention produces two critical pieces of fastener respectively by two kinds of materials, give full play to the capability and performance advantage of material separately, thereby overcome the full cast iron fastener of single employing cast iron casting explained hereafter and the product quality defect of the whole steel sheet fastener that single employing steel plate Sheet Metal Forming Technology is produced.
As preference, be horizontally arranged with cambered outwards reinforcing rib on the above-mentioned cover plate, to strengthen the bulk strength of cover plate, further improved its anti-break capability.
As another preference, the length of above-mentioned cover plate is 2/3rds of pedestal length at least, compare with the fastener of full cast iron of tradition or whole steel sheet, the partial-length of steel pipe between cover plate and pedestal increased, increased the fitting area between steel pipe and the cover plate and be no gap fit-state, thereby made connection more firm.
The technique effect that the present invention obtains is: overcome the technological deficiency of traditional full cast iron or whole steel sheet fastener, not only antiskid, survivability are strong, and have very strong antitorque commentaries on classics, anti-fracture energy, and be safe and reliable.
Description of drawings
Below in conjunction with the specific embodiment and accompanying drawing the present invention is described in further detail.
Fig. 1 is the structural representation of perpendicular type fastener among the present invention.
Fig. 2 is the structural representation of rotary-type fastener among the present invention.
Fig. 3 is the structural representation of butt joint type fastener among the present invention.
The specific embodiment
Composite type safety fastener in material of steel cover and iron seat of the present invention, mainly contain three kinds on perpendicular type, rotary-type and butt joint type, respectively as Fig. 1, Fig. 2 and shown in Figure 3, they are formed by cover plate 1, pedestal 2 and pivot pin or bolt 3, cover plate 1 is movably connected on the pedestal 2 by pivot pin or bolt 3, its cover plate 1 is the whole punch forming part of steel plate, and pedestal 2 is cast molding ironcastings.Be horizontally arranged with cambered outwards reinforcing rib 4 on the cover plate 1,, further improved its anti-break capability to strengthen the bulk strength of cover plate 1.The length of cover plate 1 is 2/3rds of pedestal 2 length at least, compare with the fastener of full cast iron of tradition or whole steel sheet, the partial-length of pedestal steel pipe between cover plate 1 and pedestal 2 increased, increased the fitting area that contacts between pedestal steel pipe and the cover plate 1, thereby made connection more firm.
In Fig. 1, the two kinds of fasteners shown in Figure 2, cover plate 1 is U-shaped structures that both sides are bent to form with the connecting portion of pedestal 2, and be connected with pedestal 2 by pivot pin 3, the two ends riveted of pivot pin 3, in the use when cover plate 1 also is not connected by bolt with the other end of pedestal 2, cover plate 1 is opened and can be kept vertically, thereby avoids steel pipe from pedestal 2 interior landings, and anti-the breaking that has also strengthened cover plate 1 and pedestal 2 connecting portions simultaneously reaches antitorque commentaries on classics performance.
Main the rising of pedestal 2 supported and balanced action in the fastener, with pedestal 2 cylinder iron material form by the pouring technology manufacturing, given full play to cast iron materials rigidity and the good advantage of setting power; And cover plate 1 is main stressed member, adopts steel plate to make through cold stamping or drop stamping global formation, has given full play to steel plate good toughness and the little advantage of fabrication error, and the stressed the best part of fastener is that cover plate has stronger anti-fracture energy in having guaranteed to use.The cover plate of fastener and pedestal adopt steel plate and cast iron respectively, two kinds of materials are maximized favourable factors and minimized unfavourable ones on fastener, make integral product overcome the inherent technology defective of traditional full cast iron or whole steel sheet fastener, had good anti-fracture, anti-slip and antitorque transformation shape ability, after testing, its whole mechanical index reach and surpass national standard (GB15831-1995) to some extent, and the quality safety performance is good, price between whole steel sheet fastener and full cast iron fastener, moderate cost.Perpendicular type fastener with 48mm specification is an example, and antiskid of the present invention, anti-destruction, antitorque commentaries on classics and tensile property all are higher than more than 20% of national regulation index; Its antiskid in producing detection in batches of full cast iron fastener, anti-destruction, antitorque commentaries on classics performance can only reach about 70% of national regulation index.In the sampling contrast detected, whole the qualification rate (three indexs are all qualified) of full cast iron fastener usually was 0.Though the antiskid of whole steel sheet fastener, anti-damage performance can be up to standard, its antitorque commentaries on classics performance does not reach national standard and instructions for use.
In sum, the present invention compares with full cast iron fastener of tradition and whole steel sheet fastener, and its mechanical property is best, and it is the highest to produce qualification rate in batches, and the safety that product uses is more reliable, thereby is to be worth the safety type fastener generally applied at building field.
Claims (3)
1, a kind of composite type safety fastener in material of steel cover and iron seat, comprise cover plate (1) and pedestal (2), cover plate (1) is movably connected on the pedestal (2) by pivot pin or bolt (3), it is characterized in that: described cover plate (1) is the whole punch forming part of steel plate, and pedestal (2) is the cast molding ironcasting.
2, composite type safety fastener in material of steel cover and iron seat according to claim 1 is characterized in that: be horizontally arranged with cambered outwards reinforcing rib (4) on the described cover plate (1).
3, composite type safety fastener in material of steel cover and iron seat according to claim 1 is characterized in that: the length of described cover plate (1) is 2/3rds of pedestal (2) length at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610095073 CN1916331A (en) | 2006-08-29 | 2006-08-29 | Composite type safety fastener in material of steel cover and iron seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610095073 CN1916331A (en) | 2006-08-29 | 2006-08-29 | Composite type safety fastener in material of steel cover and iron seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1916331A true CN1916331A (en) | 2007-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610095073 Pending CN1916331A (en) | 2006-08-29 | 2006-08-29 | Composite type safety fastener in material of steel cover and iron seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1916331A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322464A (en) * | 2011-07-15 | 2012-01-18 | 高德伟 | Amount to fastener |
-
2006
- 2006-08-29 CN CN 200610095073 patent/CN1916331A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322464A (en) * | 2011-07-15 | 2012-01-18 | 高德伟 | Amount to fastener |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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