CN216617236U

CN216617236U - Connection structure of steel fireproof door

Info

Publication number: CN216617236U
Application number: CN202122635024.2U
Authority: CN
Inventors: 骆凌飞
Original assignee: Hubei One Special Door Industry Co ltd
Current assignee: Hubei One Special Door Industry Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-05-27
Anticipated expiration: 2031-11-01

Abstract

The utility model relates to the technical field of fireproof doors, and discloses a connecting structure of a steel fireproof door, which comprises a base, wherein a screw hole is formed in the front surface of the base, an installation cavity and an expansion pipe are welded on the back surface of the base, a rotating shaft is installed in the installation cavity, a connecting piece is welded on the shaft surface of the rotating shaft, a hinge joint is fixedly installed at one end of the connecting piece, the rotating shaft comprises a ball bearing, a shaft pin and a wear-resistant piece, the ball bearing is installed at two ends of the rotating shaft, the shaft pin is installed in the center of the rotating shaft, and the two ends of the shaft pin are movably connected with the wear-resistant piece. This connection structure of fire door is prevented to steel, through the last lower extreme installation ball bearing at the axis of rotation, peg graft the pivot in the ball bearing, cup joint wear pad on the axial plane of pivot, the ball that drives ball bearing when the pivot rotates between outer lane and inner circle, thereby reduce the frictional force when the pivot rotates, more silky when making the pivot rotate, the wearability of installation wear pad multiplicable pivot and ball bearing contact surface increases this connection structure's life.

Description

Connection structure of steel fireproof door

Technical Field

The utility model relates to the technical field of fireproof doors, in particular to a connecting structure of a steel fireproof door.

Background

The fireproof door is a high temperature resistant, fire-retardant passageway fire prevention divider, be used for various public places, fire control passageway etc, can be regional in separation conflagration when taking place, protect people's life safety, and prevent that fire door can normally open and shut in order to guarantee to prevent that fire door when the installation, consequently need be at the erection joint structure between preventing fire door and door frame, current prevent that fire door connection structure exists certain drawback when using, at first, connection structure exposes outside the fire door after the installation, elegant appearance inadequately in the appearance, secondly, because prevent that fire door is the steel structure mostly, therefore weight is heavier, connection structure closes or can produce wearing and tearing after opening for a long time, lead to preventing that fire door opens and close not smooth. To this end, we propose a connecting structure of a fire door made of steel for solving the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the connecting structure of the steel fireproof door, which has the characteristics of being capable of hiding the connecting structure after being installed and being wear-resistant, prolongs the service life of the connecting structure and solves the technical problems.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: a connection structure of a steel fireproof door comprises a base, wherein a screw hole is formed in the front face of the base, an installation cavity and an expansion pipe are welded to the back face of the base, a rotating shaft is installed in the installation cavity, a connecting piece is welded to the shaft face of the rotating shaft, and a hinge head is fixedly installed at one end of the connecting piece;

the rotating shaft comprises ball bearings, a shaft pin and wear-resistant pieces, the ball bearings are mounted at two ends of the rotating shaft, the shaft pin is mounted in the center of the rotating shaft, and two ends of the shaft pin are movably connected with the wear-resistant pieces.

Preferably, the expansion pipe is welded on the back of the base and the back of the hinge head, and the front of the base and the front of the hinge head are both provided with screw holes of the expansion pipe.

Through above-mentioned technical scheme, at the back installation expansion pipe of base and hinge head to being equipped with corresponding expansion bolts in the expansion pipe, with door frame and door leaf fluting back, lay the base in the door frame, with the security protection of hinge head in the door leaf, twist ordinary screw in the screwed hole, twist expansion bolts in the expansion pipe, make base and hinge head can be more firm install in door frame and door leaf, prevent to drop.

Preferably, the front surfaces of the base and the hinge head are provided with grooves, screw holes are formed in the grooves, and the front surfaces of the grooves are clamped with the cover plate.

Through above-mentioned technical scheme, with the pedestal mounting in the door frame to with the hinge head install back in the door leaf, cover the recess through using the apron, can shelter from the screw hole and the screw of inflation pipe, apron protection screw makes it can not expose in the air, avoids the screw to rust, and enable more pleasing to the eye in the whole connection structure appearance.

Preferably, the base and the hinge head are equal in length, width and thickness.

Through above-mentioned technical scheme, the hinge head is installed in the door leaf, and when preventing that fire door closed, the axis of rotation rotates and hides the installation cavity inside with the connecting piece for the hinge head rotates and laminates the base openly, can not see this connection structure from the outside completely this moment, makes to prevent that fire door appearance is more pleasing to the eye.

Preferably, the center of the ball bearing is inserted with a shaft pin, the inner ring of the ball bearing is provided with a notch, and two ends of the shaft pin are provided with sawteeth.

Through above-mentioned technical scheme, the top and the bottom of pivot all are provided with the sawtooth, and the sawtooth is connected with ball bearing's inner circle notch looks joint for peg graft that the both ends of pivot can be firm in ball bearing, and the pivot drives ball bearing's ball when rotating and rotates between outer lane and inner circle, and more silky when making the pivot rotate, has also reduced the wearing and tearing of pivot top and bottom.

Preferably, the bottom surface of the ball bearing is provided with a wear-resistant sheet, and the wear-resistant sheet is sleeved on the axial surface of the shaft pin.

Through the technical scheme, when the shaft pin rotates, friction can be generated between the shaft pin and the bottom surface of the ball bearing, and the wear-resisting piece is arranged on the bottom surface of the ball bearing, so that the wear resistance between the shaft pin and the ball bearing can be increased, and the service life of the connecting structure is prolonged

Compared with the prior art, the utility model provides a connecting structure of a steel fireproof door, which has the following beneficial effects:

1. this connection structure of fire door is prevented to steel, through at base back weld installation cavity and expansion pipe, installation intracavity installation axis of rotation, the firmness in door frame and door leaf is installed to the multiplicable base of expansion pipe and hinge head, and when the fire door was closed, inside the installation cavity was hidden to the connecting piece, this connection structure could not be seen from the outside completely this moment for prevent that the fire door appearance is more pleasing to the eye.

2. This connection structure of fire door is prevented to steel, through the last lower extreme installation ball bearing at the axis of rotation, peg graft the pivot in the ball bearing, cup joint wear pad on the axial plane of pivot, the ball that drives ball bearing when the pivot rotates between outer lane and inner circle, thereby reduce the frictional force when the pivot rotates, more silky when making the pivot rotate, the wearability of installation wear pad multiplicable pivot and ball bearing contact surface increases this connection structure's life.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of the backside of the inventive structure;

FIG. 3 is a top view of the rotating shaft and connecting member of the present invention.

Wherein: 1. a base; 2. a screw hole; 3. a mounting cavity; 4. an expansion tube; 5. a rotating shaft; 6. a connecting member; 7. a hinge head; 51. a ball bearing; 52. a shaft pin; 53. a wear-resistant sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a connection structure of a steel fireproof door comprises a base 1, wherein a screw hole 2 is formed in the front surface of the base 1, an installation cavity 3 and an expansion pipe 4 are welded to the back surface of the base 1, a rotating shaft 5 is installed in the installation cavity 3, a connecting piece 6 is welded to the axial surface of the rotating shaft 5, and a hinge head 7 is fixedly installed at one end of the connecting piece 6;

the rotating shaft 5 comprises a ball bearing 51, a shaft pin 52 and a wear-resistant sheet 53, the ball bearing 51 is arranged at two ends of the rotating shaft 5, the shaft pin 52 is arranged at the center of the rotating shaft 5, and two ends of the shaft pin 52 are movably connected with the wear-resistant sheet 53.

Specifically, the expansion pipe 4 is welded on the back of the base 1 and the back of the hinge head 7, and the screw holes of the expansion pipe 4 are formed in the front of the base 1 and the front of the hinge head 7. The advantage is, at the back installation expansion pipe 4 of base 1 and hinge head 7 to be equipped with corresponding expansion bolts in the expansion pipe 4, after slotting door frame and door leaf, lay base 1 in the door frame, with hinge head 7 security protection in the door leaf, twist ordinary screw in screw hole 2, twist expansion bolts in expansion pipe 4, make base 1 and hinge head 7 can be more firm install in door frame and door leaf, prevent to drop.

Specifically, the front sides of the base 1 and the hinge head 7 are provided with grooves, screw holes 2 are formed in the grooves, and the front sides of the grooves are clamped with the cover plate. The advantage is, in installing the door frame with base 1 to install hinge head 7 back in the door leaf, cover the recess through using the apron, can shelter from screw hole 2 and expansion pipe 4's screw, apron protection screw makes it can not expose in the air, avoids the screw to rust, and can make whole connection structure more pleasing to the eye in the appearance.

Specifically, the base 1 and the hinge head 7 have the same length, width and thickness. The advantage is, hinge 7 installs in the door leaf, and when the fire door was closed, inside axis of rotation 5 rotated and hidden connecting piece 6 to installation cavity 3 for hinge 7 rotated and laminated base 1 openly, can not see this connection structure from the outside completely this moment, made to prevent that the fire door appearance is more pleasing to the eye.

Specifically, a shaft pin 52 is inserted into the center of the ball bearing 51, a notch is formed in the inner ring of the ball bearing 51, and sawteeth are arranged at two ends of the shaft pin 52. The advantage is, the top and the bottom of pivot 52 all are provided with the sawtooth, and the sawtooth is connected with ball bearing 51's inner circle notch looks joint for peg graft in ball bearing 51 that the both ends of pivot 52 can be firm, and the ball that drives ball bearing 51 when pivot 52 rotates between outer lane and inner circle, makes pivot 52 more smooth when rotating, has also reduced the wearing and tearing of pivot 52 top and bottom.

Specifically, a wear-resistant piece 53 is mounted on the bottom surface of the ball bearing 51, and the wear-resistant piece 53 is fitted on the axial surface of the shaft pin 52. The advantage is that when the axle pin 52 rotates, it will rub the bottom surface of the ball bearing 51, and the installation of the wear-resistant piece 53 on the bottom surface of the ball bearing 51 can increase the wear resistance between the axle pin 52 and the ball bearing 51, thereby improving the service life of the connection structure.

When the door is used, firstly, the base 1 is placed in the door frame through the grooves formed in the side faces of the door frame and the door leaf, the hinge head 7 is arranged in the door leaf in a security mode, common screws are screwed into the screw holes 2, expansion bolts are screwed into the expansion pipes 4, the base 1 and the hinge head 7 can be more firmly installed in the door frame and the door leaf, after the connecting structure is installed, the door leaf is pushed to drive the rotating shaft to rotate, the connecting piece 6 is hidden in the installation cavity 3, the hinge head 7 is rotationally attached to the front face of the base 1, the connecting structure cannot be completely seen from the outside at the moment, the ball bearings 51 are inserted into two ends of the shaft pin 52 of the rotating shaft 5, the shaft pin 52 is more smooth when rotating, the wear-resisting pieces 53 can increase the wear resistance between the shaft pin 52 and the ball bearings 51, and the service life of the connecting structure is prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a connection structure of fire door is prevented to steel, includes base (1), its characterized in that: the front surface of the base (1) is provided with a screw hole (2), the back surface of the base (1) is welded with an installation cavity (3) and an expansion pipe (4), a rotating shaft (5) is installed in the installation cavity (3), a connecting piece (6) is welded on the axial surface of the rotating shaft (5), and one end of the connecting piece (6) is fixedly provided with a hinge head (7);

the rotating shaft (5) comprises a ball bearing (51), a shaft pin (52) and wear-resistant pieces (53), the ball bearing (51) is mounted at two ends of the rotating shaft (5), the shaft pin (52) is mounted at the center of the rotating shaft (5), and two ends of the shaft pin (52) are movably connected with the wear-resistant pieces (53).

2. The connecting structure of the steel fire door as claimed in claim 1, wherein: the expansion pipe (4) is welded on the back of the base (1) and the hinge head (7), and the screw holes of the expansion pipe (4) are formed in the front of the base (1) and the front of the hinge head (7).

3. The connecting structure of the steel fire door as claimed in claim 1, wherein: the hinge is characterized in that a groove is formed in the front of the base (1) and the front of the hinge head (7), a screw hole (2) is formed in the groove, and the cover plate is clamped in the front of the groove in a positive mode.

4. The connecting structure of the steel fire door as claimed in claim 1, wherein: the base (1) and the hinge head (7) are equal in length, width and thickness.

5. The fire door steel connecting structure according to claim 1, wherein: the center of the ball bearing (51) is inserted with a shaft pin (52), the inner ring of the ball bearing (51) is provided with a notch, and two ends of the shaft pin (52) are provided with sawteeth.

6. The fire door steel connecting structure according to claim 1, wherein: the bottom surface of the ball bearing (51) is provided with a wear-resistant sheet (53), and the wear-resistant sheet (53) is sleeved on the shaft surface of the shaft pin (52).