CN201040906Y

CN201040906Y - Direct fastener insert type light steel joist

Info

Publication number: CN201040906Y
Application number: CNU2007201243595U
Authority: CN
Inventors: 刘冬颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-29
Filing date: 2007-05-29
Publication date: 2008-03-26
Anticipated expiration: 2017-05-29

Abstract

A direct seizure plug-in light-gauge steel keel is provided, which includes a main keel with a hoisting hole on the top, alternating appeared seizure grooves locating under the bottom, and a pair of seizure gear. The utility model is characterized in that a connecting joint with the same structure of the main keel and reduced dimension is integrated with the main keel. A seizure strip is disposed outside the connecting joint. Due to the technical scheme, the utility model has low cost and saves materials. In the utility model the whole seizure gear can be connected and overlapped, which improves the joint strength and reduces the error. The vertical surface stresses of the main keel seizure gear and the accessory keel apparently improves the joint strength between the main keel and the accessory keel and the load of the accessory keel.

Description

Straight card inserted connection-type lightgage steel joist

Technical field

The utility model relates to a kind of building and ornament materials, particularly a kind of straight card inserted connection-type lightgage steel joist.

Background technology

The bottom of the single side face of lifting main joist of the prior art has latch and the catching groove that alternately occurs, the main joist two ends dash outstanding connector, spreading uses mutually, and the top has hole for hoist, is divided into regulating partly, connecting partly, these lifting keel in use, its end face hole for hoist is preset screw rod with end face be connected, the keel two ends interconnect, and regulate level with the nut on the screw rod then, spiro rod length can not surpass the keel catching groove, and level regulates the back rider keel is installed in the catching groove.

The lifting keel of said structure have the following disadvantages:

1, the main joist finished product is generally more than 3 meters, the connector at main joist two ends in installation process, and at one end by after the segmentation, its remainder does not have connector, can't interconnect, and spillage of material is big, the waste resource;

2, being connected between the latch of main joist and the rider keel belongs to tight fit, when the punching press connector, latch is washed out most, the residue sub-fraction is on connector, when keel prolonged the connection use, quilt is washed out when latch partly interconnects was difficult to reach the cooperation requirement, and the latch size of being washed out is easy to generate scale error, produce when the latch that makes main joist interconnect part is connected with rider keel and become flexible, or do not connect;

When 3, main joist being installed, because of latch and rider keel have only horizontal the connection, its joint face is less relatively, during installation, makes main joist towards latch one face tilt is arranged easily, and bonding strength is the end of than between main joist and the rider keel.

Summary of the invention

The purpose of this utility model just provides that a kind of cost is low, the straight card inserted connection-type lightgage steel joist of economical with materials.

The utility model is achieved through the following technical solutions, it is a kind of straight card inserted connection-type lightgage steel joist, comprise that the top has the main joist of hole for hoist and the catching groove and a pair of latch that is positioned at catching groove that its bottom has alternately appearance, it is characterized in that: an end of main joist have with main joist be one, structure is identical with main joist but connector that size is dwindled relatively, the lateral surface of described connector is provided with card article.

The utility model in use, can each main joist be linked together by the connector on the main joist, when described connector is connected with another main joist, be inserted into main joist not in the end with connector, but card article stays outside the main joist, it is blocked, then rider keel is installed on the latch in the catching groove, when needs dismounting main joist connected, both hands were held the two ends at abutment respectively and are drawn to both sides one, just can easy removal.

Owing to adopted technique scheme, the utlity model has following advantage:

1), adopt an end connector, keel can connect after segmentation at any time, save use cost, effectively utilize resource;

2), the overlapping connection of whole latch, improved bonding strength and reduced the connection error;

3), increased main joist latch and rider keel stress surface longitudinally, obviously improved the bonding strength of main joist and rider keel, also improved the load of rider keel simultaneously.

Description of drawings

Description of drawings of the present utility model is as follows:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a user mode reference diagram of the present utility model;

Fig. 3 is the enlarged drawing of A among Fig. 1;

Fig. 4 is the structural representation that the utility model cooperates with rider keel.

Among the figure: 1. furred ceiling hole; 2. main joist; 3. catching groove; 4. latch; 5. connector; 6. card article; 7. connection latch; 8. stiffened edge; 9. rider keel.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

Shown in Fig. 1 or 2, the utility model comprises that the top has the main joist 2 of hole for hoist 1 and the catching groove 3 and a pair of latch 4 that is positioned at catching groove that its bottom has alternately appearance, it is characterized in that: an end of main joist 2 have with main joist be one, structure is identical with main joist but connector 5 that size is dwindled relatively, the lateral surface of described connector is provided with card article 6.

Described card article is three limit openings on the side of connector, and end sealing is one with connector.The shape of card article can be shaped as required.

As shown in Figure 1, the bottom of connector has latch that is lower than on the main joist and the connection latch 7 that alternately occurs.

Be 90 ° levels bendings with respect to the bottom of main joist along equidirectional as the latch 4 in the catching groove as described in Fig. 1,2,3 or 4, and form with rider keel and to support.

Latch 4 in the described catching groove 3 is 90 ° of levels bendings with respect to the bottom of main joist along direction in opposite directions, and forms with rider keel and to support.The overbending direction of described latch can be simultaneously to the interior lateral buckling of main joist, can also can be the interior lateral buckling of a latch also simultaneously to the outer lateral buckling of main joist to main joist, latch is to the outer lateral buckling of main joist.

Shown in Fig. 1 or 2, the opposite side at main joist top has stiffened edge 8, and the cross section of this stiffened edge is straight flange or L shaped limit.Described stiffened edge can also can be to be interrupted the limit for leading to the limit longitudinally.

Of the present utility model specifically is to use like this: can each main joist be linked together by the connector on the main joist between main joist and the main joist, clamp by the end of the card article on the connector main joist, it connects latch and the whole tooth of terminal last latch of another main joist overlaps, then rider keel 9 is installed on the latch in the catching groove, because latch bending, form support with rider keel, its supporting surface is against on the inwall of rider keel, it is by original line contact having become face contact, when main joist is connected with rider keel 9, obviously increased stress surface, make the rider keel difficult drop-off, when needs dismounting main joist connected, both hands were held the two ends at abutment respectively and are drawn to both sides one, just can easy removal.

In sum, the utility model can also use as other ceiling main joist of suspended ceiling, and it can save use cost under the equal service condition that requires, and efficent use of resources is quick for installation, has obviously improved operating efficiency.

Claims

1. one kind is directly blocked inserted connection-type lightgage steel joist, comprise that the top has the main joist of hole for hoist (1) (2) and its bottom has a pair of latch (4) that replaces the catching groove (3) that occurs and be positioned at catching groove, it is characterized in that: an end of main joist (2) have with main joist be one, structure is identical with main joist but connector (5) that size is dwindled relatively, the lateral surface of described connector is provided with card article (6).

2. straight card inserted connection-type lightgage steel joist as claimed in claim 1 is characterized in that: the bottom of connector has latch that is lower than on the main joist and the connection latch (7) that alternately occurs.

3. straight card inserted connection-type lightgage steel joist as claimed in claim 1 is characterized in that: the latch (4) in the described catching groove is 90 ° of level bendings with respect to the bottom of main joist along equidirectional, and forms support with rider keel.

4. straight card inserted connection-type lightgage steel joist as claimed in claim 1 is characterized in that: the latch (4) in the described catching groove (3) is 90 ° of levels bendings with respect to the bottom of main joist along direction in opposite directions, and forms with rider keel and to support.

5. straight card inserted connection-type lightgage steel joist as claimed in claim 1 is characterized in that: the opposite side at main joist top has stiffened edge (8), and the cross section of this stiffened edge is straight flange or L shaped limit.