CN210286495U

CN210286495U - A shrouding structure that is arranged in hoist steel construction gusset plate to be connected with pipe

Info

Publication number: CN210286495U
Application number: CN201921138050.0U
Authority: CN
Inventors: 王芝斌; 熊丁根
Original assignee: Shanghai Zhenghua Heavy Industries Co Ltd
Current assignee: Shanghai Zhenghua Heavy Industries Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-10
Anticipated expiration: 2029-07-19

Abstract

The utility model provides a sealing plate structure for connecting a gusset plate and a circular tube in a crane steel structure, which comprises a gusset plate body and a circular tube structure connected with the gusset plate body, wherein the circular tube structure is provided with a stress release hole, and the sealing plate structure also comprises a sealing plate body arranged at the joint of the gusset plate body and the circular tube structure; the sealing plate body is arranged to be a long waist-shaped plate, two end parts of the sealing plate body are arc-shaped, an elongated slot is formed in the length direction of the sealing plate body, the elongated slot is communicated with one end of the sealing plate body, a notch is formed in the bottom of the elongated slot, a plug screw hole is formed in the sealing plate body, the position of the plug screw hole corresponds to that of a stress release hole in the circular tube structure, and the plug screw hole and the stress release hole are sealed through a plug screw. The utility model discloses change the connection structure between current gusset plate, shrouding and the pipe structure, fundamentally has avoided the structural crackle that produces of pipe.

Description

A shrouding structure that is arranged in hoist steel construction gusset plate to be connected with pipe

Technical Field

The utility model relates to a attach fitting in the design of hoist steel construction, more specifically say, relate to a shrouding structure that is arranged in node plate and pipe to be connected among the hoist steel construction.

Background

In the design of crane steel structure, often adopt the pipe (or box girder, here take the pipe as the example to explain) as important atress component, the both ends of this pipe, generally adopt the thick plate to insert the pipe as the gusset plate to with the pipe welding, for guaranteeing that welding quality can satisfy the designing requirement, generally at gusset plate and pipe welded end, can set up stress release hole on the pipe, in order to reduce the manufacturing degree of difficulty. After the welding is finished, a sealing plate which is not important in stress calculation is additionally used for sealing the stress release hole in the circular tube so as to play a role in strengthening structure and sealing, prevent the inside of the circular tube from being corroded and reduce the safety performance of equipment.

The structure is obvious in stress and easy to manufacture, and is a common mode in design analysis of a steel structure. But has the following disadvantages:

1) the sealing is easy to crack, and the sealing is welded on the circular tube finally, and the root of the node plate and the welding seam of the sealing plate are perpendicular to the stress direction of the structure, so when the design is used in a dynamic load field, the node plate and the end part of the sealing plate are transversely welded and often cracked, and when the crack is not repaired in time, the crack is easy to extend to a main structure, thereby causing major safety accidents;

2) the sealing plate is difficult to completely repair after cracking, the sealing plate is easy to crack, the inherent defect of the design is that the sealing plate cannot be completely cured, when the crack appears, even if the crack is repaired in time, the crack can be repeatedly appeared in the future with a high probability, and after the sealing plate is replaced with a new sealing plate, the crack cannot be guaranteed to not occur any more;

3) the shrouding causes the inside inspection difficulty of structure, and stress release hole edge produces fatigue crack easily, nevertheless because the shrouding shelters stress release hole, even consequently hole edge has produced the crack, also very difficult discovery and restoration, very easily causes great incident.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect that exists among the prior art, the utility model aims at providing a shrouding structure that is arranged in hoist steel construction gusset plate to be connected with the pipe changes the connection structure between current gusset plate, shrouding and the pipe structure, and fundamentally has avoided the tip transverse weld's of gusset plate and shrouding problem of ftracturing to whether easily there is the crackle production at inspection stress release hole edge.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a sealing plate structure for connecting a gusset plate and a circular tube in a steel structure of a crane comprises a gusset plate body, a circular tube structure connected with the gusset plate body, a stress release hole formed in the circular tube structure, and a sealing plate body arranged at the joint of the gusset plate body and the circular tube structure;

the sealing plate body is arranged to be a long waist-shaped plate, two end parts of the sealing plate body are arc-shaped, an elongated slot is formed in the length direction of the sealing plate body, the elongated slot is communicated with one end of the sealing plate body, a notch is formed in the bottom of the elongated slot, a plug screw hole is formed in the sealing plate body, the position of the plug screw hole corresponds to that of a stress release hole in the circular tube structure, and the plug screw hole and the stress release hole are sealed through a plug screw.

The gusset plate body is inserted in the elongated slot and is fixedly connected through welding and silica gel.

The inner edge of the long groove is provided with a 45-degree groove, and the outer edge is provided with a slope edge.

The width of the long groove is larger than the thickness of the gusset plate body.

The sealing plate body is a long-waist-shaped arc-shaped plate, and the radian of the sealing plate body is matched with that of the circular tube structure.

The notches at the bottom of the long groove are two semicircular notches which are respectively arranged at the upper side and the lower side of the bottom of the long groove.

In the technical scheme, the utility model provides a closed structure that is arranged in hoist steel construction gusset plate to be connected with the pipe still has the beneficial effect of following several points:

1) the transverse connection between the sealing plate body and the end part of the gusset plate of the sealing plate structure of the utility model adopts silica gel plugging instead of welding, thus fundamentally avoiding the possibility of fatigue crack generation at the position;

2) the periphery of the sealing plate body and two sides of the groove shape of the sealing plate structure of the utility model are still welded with the structure, thus maintaining the reinforcing effect on the circular tube structure;

3) the utility model discloses shrouding structure's shrouding body is located the inspection hole that stress release hole position was seted up, and the convenience is maintaining maintenance and inspection operation, when needs carry out routine inspection, can remove the plug screw, uses the endoscope to stretch into the state of the inside inspection stress release hole periphery of pipe and other positions through the inspection hole.

Drawings

Fig. 1 is a schematic view of the connection between the node plate body and the circular tube structure in the sealing plate structure of the present invention;

FIG. 2 is a schematic view in the direction A of FIG. 1;

FIG. 3 is a schematic view of the connection between the node plate body and the sealing plate body and the circular tube structure in the sealing plate structure of the present invention;

fig. 4 is a schematic view of the sealing plate body in the sealing plate structure of the present invention;

fig. 5 is a schematic view in the direction F-F in fig. 4.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Please combine fig. 1 to fig. 5 to show, the utility model provides a closed plate structure for gusset plate and pipe are connected in hoist steel construction, including gusset plate body 1, and rather than the pipe structure 2 that links to each other, seted up stress release hole 3 on the pipe structure 2, the aforesaid is prior art part, just no longer redundantly here. Different from the prior art, still include and locate gusset plate body 1 with shrouding body 4 of pipe structure 2 junction.

Preferably, the sealing plate body 4 is a long waist-shaped plate, two ends of the sealing plate body are arc-shaped 5, a long groove 6 is formed in the length direction of the sealing plate body 4, the long groove 6 is communicated with one end of the sealing plate body 4, the width of the long groove 6 is slightly larger than the thickness of the gusset plate body 1, so that the sealing plate body 4 can be conveniently assembled on the circular tube structure 2, two semicircular notches 7 are further formed in the bottom of the long groove 6 and are respectively arranged on the upper side and the lower side of the bottom of the long groove 6, so that stress borne by the sealing plate body 4 is reduced after the sealing plate body 4 is completely assembled, a screw plug hole 8 is further formed in the sealing plate body 4, the position of the screw plug hole 8 corresponds to the position of the stress release hole 3 in the circular tube structure 2, and the screw plug hole 8.

Preferably, when the elongated slot 6 is manufactured, according to the project requirements, the inner edge 9 thereof is provided with a 45-degree groove, so that the welding seam between the circular tube structure 2 and the gusset plate body 1 is avoided when the elongated slot is conveniently installed. The outer edge 10 of the elongated slot 6 can be correspondingly arranged as a slope edge according to actual conditions, so that the stress is smoothed excessively after welding is finished.

Preferably, the shrouding body 4 should be pressed into the long waist type arc of the radian looks adaptation with pipe structure 2 according to actual project during the preparation to make the installation back, pipe structure 2 and shrouding body 4 can laminate closely.

The utility model discloses shrouding structure accomplishes the back at pipe structure 2 and the welding of gusset body 1, covers shrouding body 4 on stress release hole 3, and shrouding body 4's outside welds with pipe structure 2, its elongated slot 6 and the welding of gusset body 1. The bottom of the long groove 6 is not welded with the gusset plate body 1, but is connected with the gusset plate body by silica gel. The transverse edge of the end part of the sealing plate body 4 is not tightly attached to the end part of the gusset plate body 1, but a gap is reserved so as to conveniently contain silica gel. The connection shown in fig. 3 is only one of many welding methods, and does not mean that the closing plate body 4 can only be welded with the circular tube structure 2 in this way. During inspection, the screw plug 9 on the sealing plate body 4 is removed, and the interior of the circular tube structure 2 can be inspected through an endoscope. After the inspection is finished, the stress release holes 3 need to be closed in time to prevent water vapor from entering and causing corrosion.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a shrouding structure that is arranged in hoist steel construction gusset plate to be connected with the pipe, includes the gusset plate body, and rather than the pipe structure that links to each other, the structural stress relief hole of having seted up of pipe, its characterized in that: the sealing plate body is arranged at the joint of the gusset plate body and the circular tube structure;

2. The closing plate structure for the connection of the gusset plate and the circular tube in the steel structure of the crane according to claim 1, wherein: the gusset plate body is inserted in the elongated slot and is fixedly connected through welding and silica gel.

3. The closing plate structure for the connection of the gusset plate and the circular tube in the steel structure of the crane according to claim 2, wherein: the inner edge of the long groove is provided with a 45-degree groove, and the outer edge is provided with a slope edge.

4. The closing plate structure for the connection of the gusset plate and the round tube in the steel structure of the crane according to claim 3, wherein: the width of the long groove is larger than the thickness of the gusset plate body.

5. The closing plate structure for the connection of the gusset plate and the circular tube in the steel structure of the crane according to claim 1, wherein: the sealing plate body is a long-waist-shaped arc-shaped plate, and the radian of the sealing plate body is matched with that of the circular tube structure.

6. The closing plate structure for the connection of the gusset plate and the circular tube in the steel structure of the crane according to claim 1, wherein: the notches at the bottom of the long groove are two semicircular notches which are respectively arranged at the upper side and the lower side of the bottom of the long groove.