JPH0842542A - Weld type screw seat - Google Patents

Abstract

PURPOSE:To provide a weld type screw seat to form a sufficient coating film on the whole surface of a seat plate body. CONSTITUTION:The whole of a seat plate body 5 is formed into an inverted U-shape, and a nut 6 is welded to an upper plate part 5b. Notches 5c formed in an opening cross section in any section extending at right angles with the longitudinal direction of the seat plate body 5 are formed in a zigzagging state in the tow side plates of the seat plate body 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welded screw seat which is attached to the surface of a thick plate constituting a structure of a construction machine by welding.

[0002]

2. Description of the Related Art Conventional welding type screw seats include a first example shown in FIGS. 6 to 8 and a second example shown in FIGS. 9 to 12.

In the first example, a solid screw seat main body 2 having a screw hole 3 is attached to a thick plate 1 as a mating member by welding 4. In the second example, the lower ends of both side plates 5a of the seat plate body 5 which is formed in an inverted U shape as a whole are attached to the thick plate 1 by welding 4. A nut 6 is fixed to the inside of the upper plate portion 5b of the seat plate body 5 by welding. The screw hole of the nut 6 matches the hole 7 provided in the upper plate portion 5b.

[0004]

When the first example described above is attached to a structure that generates high stress, the screw seat main body 2 itself having a screw hole has high rigidity, so that Acting as an add-on, and the welding bead of the attachment may cause stress concentration.
May be damaged. Furthermore, when coating is performed after welding, a minute gap 8 remains between the lower end surface of the screw seat body 2 and the thick plate 1, so that rust occurs due to water intrusion and the appearance is significantly impaired.

In the second example, the effect as an additive is small with respect to the thick plate 1 which is a structure, but when the coating is applied, the paint does not easily adhere to the inside of the seat plate main body 5, so that sufficient coating is performed. No film is formed. Therefore, rust may be generated from that portion and the appearance may be significantly impaired.

The present invention has been made in view of these problems, and an object of the present invention is to provide a welding type screw seat which can easily form a sufficient coating film on the entire seat plate body.

[0007]

In the welded screw seat according to the present invention, notches are formed in both side plates of the seat plate body to form an open cross section at any cross section perpendicular to the longitudinal direction of the seat plate body. Characterized by staggered arrangement.

[0008]

With the notch provided in the seat plate body, a sufficient coating film can be formed on all the surfaces of the seat plate body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
This will be described below. 9 to 12 in those figures.
The same members as are indicated by the same reference numerals.

On both side plates 5a of the seat plate body 5, the seat plate body 5 is attached.
The notches 5c that form an open cross section in any cross section perpendicular to the longitudinal direction of the are provided in a staggered manner. Due to the presence of the notch 5c, a sufficient coating film can be formed on all the surfaces of the seat plate body 5 during coating.

In this embodiment, the nut 6 is welded to the inner side of the upper plate portion 5b, but it may be welded to the outer side.
The same effect can be obtained by female threading the hole 7 of the upper plate portion 5b instead of welding the nut 6.

[0012]

As described above, according to the present invention, a sufficient coating film can be easily formed on all the surfaces of the seat plate body. Further, weight and cost can be reduced as compared with the conventional welded type screw seat.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention,

FIG. 2 is a front view of FIG.

3 is a left side view of FIG. 1,

4 is a right side view of FIG. 1,

5 is a sectional view taken along line AA of FIG.

FIG. 6 is a plan view showing a first example of a conventional welding type screw seat,

FIG. 7 is a sectional view taken along line BB of FIG.

FIG. 8 is a flat side view of FIG.

FIG. 9 is a plan view showing a second example of a conventional welding type screw seat,

FIG. 10 is a front view of FIG.

11 is a left side view of FIG. 9,

FIG. 12 is a right side view of FIG.

[Explanation of symbols]

 1 Thick plate 5 Seat plate main body 5a Side plate 5b Upper plate part 5c Notch 6 Nut 7 hole

Claims (2)

[Claims] 1. A welded screw seat, which is formed into an inverted U-shape as a whole and whose upper plate part has a female screw on its upper and lower ends, is fixed to the mating member by welding the lower end parts of both side plates to both sides of the seat plate body. A welded screw seat, characterized in that the plate is provided with notches in a zigzag pattern that forms an open cross section in any cross section perpendicular to the longitudinal direction of the seat plate body. 2. A welded screw seat according to claim 1, wherein a nut is welded to the upper plate portion.