CN209838078U - Mute type aluminum alloy door frame - Google Patents

Abstract

The utility model relates to the technical field of safety protection auxiliary devices, in particular to a mute type aluminum alloy door frame which is convenient for hoisting a frame body and reducing the damage to the frame body; the anti-collision performance is improved; the frame comprises a frame body, a first supporting leg, a second supporting leg, a third supporting leg and a fourth supporting leg; the left connecting rod, the left connecting ring, the first left sliding block, the second left sliding block, the left moving block, the first left rotating rod, the second left rotating rod, the right connecting ring, the first right sliding block, the second right sliding block, the right moving block, the first right rotating rod and the second right rotating rod are further included, a left mounting groove is formed in the central area of the left half area of the top side wall of the frame body, and a first left sliding groove and a second left sliding groove are respectively formed in the front side wall and the inner rear side wall in the left mounting groove; the device further comprises a support rod, a first limiting rod, a second limiting rod, a fixing rod, a telescopic rod, a spring, a fixing block, a front rotating shaft, a rear rotating shaft and a roller.

Description

Mute type aluminum alloy door frame

Technical Field

The utility model relates to a technical field of safety protection auxiliary device especially relates to a hush air aluminum alloy door frame.

Background

As is well known, a silent type aluminum alloy door frame is a device for supporting an aluminum alloy door to facilitate opening and closing of the door, and is widely used in the field of safety protection; the existing mute type aluminum alloy door frame comprises a frame body, a first supporting leg, a second supporting leg, a third supporting leg and a fourth supporting leg, wherein the right ends of the first supporting leg and the second supporting leg are respectively connected with the top end and the bottom end of the left side wall of the frame body, and the left ends of the third supporting leg and the fourth supporting leg are respectively connected with the top end and the bottom end of the right side wall of the frame body; when the existing mute type aluminum alloy door frame is used, four grooves are reserved at positions where the door frame needs to be installed, the first supporting leg, the second supporting leg, the third supporting leg and the fourth supporting leg are respectively inserted into the four grooves to fix the frame body, and then a user can clamp the aluminum alloy door needing to be installed in the frame body; the existing mute type aluminum alloy door frame is discovered in use, during unloading, a user often uses a crane to directly lift the frame, the damage to the frame is large, and the use reliability is low; the frame body anti-collision function is poor, and the use limitation is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a lifting device which is convenient for lifting the frame body, reduces the damage to the frame body and reduces the use reliability; improve anticollision performance, reduce the hush air aluminum alloy door frame of use limitation.

The utility model discloses a mute type aluminum alloy door frame, which comprises a frame body, a first supporting leg, a second supporting leg, a third supporting leg and a fourth supporting leg, wherein the right ends of the first supporting leg and the second supporting leg are respectively connected with the top end and the bottom end of the left side wall of the frame body, and the left ends of the third supporting leg and the fourth supporting leg are respectively connected with the top end and the bottom end of the right side wall of the frame body; the left connecting rod, the left connecting ring, the first left sliding block, the second left sliding block, the left moving block, the first left rotating rod, the second left rotating rod, the right connecting ring, the first right sliding block, the second right sliding block, the right moving block, the first right rotating rod and the second right rotating rod are also included, a left mounting groove is arranged in the central area of the left half area of the top side wall of the frame body, a first left sliding groove and a second left sliding groove are respectively arranged on the front side wall and the inner rear side wall in the left mounting groove, the front end of the first left sliding block and the rear end of the second left sliding block are respectively inserted into the first left sliding groove and the second left sliding groove, the front end of the first left sliding block and the front end of the second left sliding block are respectively connected with the bottom end of the central area of the front side wall and the rear side wall of the left moving block, a left connecting groove communicated in the left-right direction is arranged on the top side wall of the left, the front end of a first left rotating rod and the rear end of a second left rotating rod are respectively inserted into a first left rotating groove and a second left rotating groove, the front end of the first left rotating rod and the front end of the second left rotating rod are respectively connected with the front end and the rear end of a left connecting rod, the top end of the left connecting rod is connected with the bottom end of a left connecting ring, the central area of the right half area of the top side wall of the frame body is provided with a right mounting groove, the front side wall and the inner rear side wall of the right mounting groove are respectively provided with a first right sliding groove and a second right sliding groove, the front end of a first right sliding block and the front end of a second right sliding block are respectively inserted into the first right sliding groove and the second right sliding groove, the front end of the first right sliding block and the front end of the second right sliding block are respectively connected with the bottom ends of the central areas of the front side wall and the rear side wall of the right moving block, the top side wall of the right moving block is provided, the front end of the first right rotating rod and the rear end of the second right rotating rod are respectively inserted into the first right rotating groove and the second right rotating groove, the rear end of the first right rotating rod and the front end of the second right rotating rod are respectively connected with the front end and the rear end of the right connecting rod, and the top end of the right connecting rod is connected with the bottom end of the right connecting ring; the frame body is provided with a buffer groove on the left side wall, a first limit hole is arranged in the upper half area of the support rod, the first limit rod penetrates through the first limit hole, the front end and the rear end of the first limit rod are respectively connected with the upper half area of the front side wall and the inner rear side wall in the buffer groove, the lower half area of the fixed rod is provided with a second limit hole, the second limit rod penetrates through the second limit hole, the front end and the rear end of the second limit rod are respectively connected with the lower half area of the front side wall and the inner rear side wall in the buffer groove, the right lower side of the support rod is provided with a clamping groove, the front side wall and the inner rear side wall in the clamping groove are respectively provided with a front rotating groove and a rear rotating groove, one end of the front rotating shaft and one end of the rear rotating shaft are respectively inserted into the front rotating groove and the rear rotating groove, the other end of the front rotating shaft and the other end of the rear rotating shaft are respectively connected with the central areas of the front side wall and the rear, the fixed block is connected with the lower half area of bracing piece left side wall, and the fixed block left side wall is provided with the articulated groove to the intercommunication at the bottom of pushing up, and the inside flexible chamber that is provided with of dead lever, spring are located flexible intracavity portion, and the fixed rod top lateral wall intercommunication is provided with the flexible mouth, telescopic link bottom edge flexible mouth insert flexible intracavity portion then with the contact of spring top, the telescopic link top insert the articulated inslot portion and with the rotatable articulated of articulated inslot lateral wall.

The utility model discloses a hush air aluminum alloy door frame, first spacing hole department are provided with first ball bearing, and first gag lever post passes first ball bearing and connects with first ball bearing key.

The utility model discloses a hush air aluminum alloy door frame still includes that the spacing hole department of second is provided with second ball bearing, and the second gag lever post passes second ball bearing and with second ball bearing key-type connection.

The utility model discloses a hush air aluminum alloy door frame still includes the stopper, and the stopper bottom is connected with telescopic link lateral wall bottom, and flexible intracavity top lateral wall is provided with the spacing groove, and the stopper inserts the spacing inslot portion.

The utility model discloses a hush air aluminum alloy door frame is provided with the rubber ring on the gyro wheel lateral wall.

The utility model discloses a hush air aluminum alloy door frame, first left sliding block, second left sliding block, first right sliding block, second right sliding block, first left sliding tray, second left sliding tray, first right sliding tray and second right sliding tray cross-sectional shape all are "T" type.

The utility model discloses a hush air aluminum alloy door frame, first left turn groove, second left turn groove, first right turn groove and second right turn groove punishment do not are provided with four group's third ball bearings, and first left rotary rod front end, second left rotary rod rear end, first right rotary rod front end and second right rotary rod rear end insert four group's third ball bearings respectively and connect with four group's third ball bearing key-types respectively.

The utility model discloses a hush air aluminum alloy door frame, preceding revolving chute and back revolving chute department are provided with two sets of fourth ball bearing respectively, preceding pivot is inside and connect with two sets of fourth ball bearing key-types respectively with back pivot insert two sets of fourth ball bearing respectively.

Compared with the prior art, the beneficial effects of the utility model are that: under the action of a first left sliding block, a second left sliding block, a first right sliding block and a second right sliding block, a left moving block and a right moving block can move up and down, when the frame body needs to be lifted, a crane hooks a left connecting ring and a right connecting ring, under the action of gravity, the left moving block and the right moving block both rise for a certain distance, under the action of a first left rotating rod, a second left rotating rod, a left connecting rod, a first right rotating rod, a second right rotating rod and a right connecting rod, the angles of the left connecting ring and the right connecting ring change along with the stress direction of the left connecting ring and the right connecting ring, the possibility of fracture is reduced, after the lifting is finished, the left connecting ring and the right connecting ring are respectively inserted into a left mounting groove and a right mounting groove, four grooves are reserved at the positions where a door frame needs to be mounted, and a first landing leg, a second landing leg, a third landing leg and a, then, a user clamps the aluminum alloy door to be installed in the frame body, so that the frame body is conveniently lifted, the damage to the frame body is reduced, and the use reliability is reduced; gyro wheel protrusion in bracing piece, the bracing piece can use first gag lever post to rotate as the axle, the dead lever can use the second gag lever post to rotate as the axle, under the spring action, the telescopic link inserts the inside adjustable length of dead lever, the telescopic link is rotatable articulated with the fixed block, when door and gyro wheel contact, the telescopic link inserts the length increase in flexible chamber, the gyro wheel, preceding pivot rotates with the back pivot, the spring forms the buffering to the impact force of door, it violently collides with the framework to hinder the door, the anti-collision performance is improved, reduce and use the limitation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

FIG. 4 is a schematic right side elevational view of the connection of the left connecting rod, left connecting ring, first left slide block, second left slide block, left moving block, first left rotating rod, second left rotating rod and third ball bearing;

in the drawings, the reference numbers: 1. a frame body; 2. a first leg; 3. a left connecting rod; 4. a left connecting ring; 5. a first left slider; 6. a second left slider; 7. a left moving block; 8. a first left rotating lever; 9. a second left rotating bar; 10. a support bar; 11. a first limit rod; 12. a second limiting rod; 13. fixing the rod; 14. a telescopic rod; 15. a spring; 16. a fixed block; 17. a front rotating shaft; 18. a roller; 19. a first ball bearing; 20. a second ball bearing; 21. a limiting block; 22. a rubber ring; 23. a third ball bearing; 24. and a fourth ball bearing.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the utility model discloses a mute type aluminum alloy door frame, which comprises a frame body 1, a first leg 2, a second leg, a third leg and a fourth leg, wherein the right ends of the first leg 2 and the second leg are respectively connected with the top end and the bottom end of the left side wall of the frame body 1, and the left ends of the third leg and the fourth leg are respectively connected with the top end and the bottom end of the right side wall of the frame body 1; the left connecting rod 3, the left connecting ring 4, the first left sliding block 5, the second left sliding block 6, the left moving block 7, the first left rotating rod 8, the second left rotating rod 9, the right connecting rod, the right connecting ring, the first right sliding block, the second right sliding block, the right moving block, the first right rotating rod and the second right rotating rod, a left mounting groove is arranged in the central area of the left half area of the top side wall of the frame body 1, a first left sliding groove and a second left sliding groove are respectively arranged on the inner front side wall and the inner rear side wall of the left mounting groove, the front end of the first left sliding block 5 and the rear end of the second left sliding block 6 are respectively inserted into the first left sliding groove and the second left sliding groove, the rear end of the first left sliding block 5 and the front end of the second left sliding block 6 are respectively connected with the bottom end of the central area of the front side wall and the rear side wall of the left moving block 7, a left connecting groove communicated in the left-right direction is arranged on the top side wall of the left moving, the front end of a first left rotating rod 8 and the rear end of a second left rotating rod 9 are respectively inserted into a first left rotating groove and a second left rotating groove, the rear end of the first left rotating rod 8 and the front end of the second left rotating rod 9 are respectively connected with the front end and the rear end of a left connecting rod 3, the top end of the left connecting rod 3 is connected with the bottom end of a left connecting ring 4, the central area of the right half area of the top side wall of a frame body 1 is provided with a right mounting groove, the front side wall and the inner rear side wall in the right mounting groove are respectively provided with a first right sliding groove and a second right sliding groove, the front end of the first right sliding block and the rear end of the second right sliding block are respectively inserted into the first right sliding groove and the second right sliding groove, the rear end of the first right sliding block and the front end of the second right sliding block are respectively connected with the bottom ends of the central areas of the front side wall and the rear side wall of the right moving block, the top side wall of the right moving block is, the front end of the first right rotating rod and the rear end of the second right rotating rod are respectively inserted into the first right rotating groove and the second right rotating groove, the rear end of the first right rotating rod and the front end of the second right rotating rod are respectively connected with the front end and the rear end of the right connecting rod, and the top end of the right connecting rod is connected with the bottom end of the right connecting ring; the frame comprises a supporting rod 10, a first limiting rod 11, a second limiting rod 12, a fixed rod 13, a telescopic rod 14, a spring 15, a fixed block 16, a front rotating shaft 17, a rear rotating shaft and a roller 18, wherein a buffer groove is arranged on the left side wall in the frame body 1, a first limiting hole is arranged in the upper half area of the supporting rod 10, the first limiting rod 11 passes through the first limiting hole, the front end and the rear end of the first limiting rod 11 are respectively connected with the front side wall in the buffer groove and the upper half area of the inner rear side wall, a second limiting hole is arranged in the lower half area of the fixed rod 13, the second limiting rod 12 passes through the second limiting hole, the front end and the rear end of the second limiting rod 12 are respectively connected with the front side wall in the buffer groove and the lower half area of the inner rear side wall, a clamping groove is arranged on the lower right side of the supporting rod 10, a front rotating groove and a rear rotating groove are respectively arranged on the front side wall and the inner rear side wall, the other ends of the front rotating shaft 17 and the rear rotating shaft are respectively connected with the central areas of the front side wall and the rear side wall of the roller 18, the fixed block 16 is connected with the lower half area of the left side wall of the supporting rod 10, the left side wall of the fixed block 16 is provided with a hinge groove communicated from top to bottom, a telescopic cavity is arranged inside the fixed rod 13, the spring 15 is positioned inside the telescopic cavity, the top side wall of the fixed rod 13 is communicated with a telescopic opening, the bottom end of the telescopic rod 14 is inserted into the telescopic cavity along the telescopic opening and then is contacted with the top end of the spring 15, and the top end of the telescopic rod 14; under the action of a first left sliding block, a second left sliding block, a first right sliding block and a second right sliding block, a left moving block and a right moving block can move up and down, when the frame body needs to be lifted, a crane hooks a left connecting ring and a right connecting ring, under the action of gravity, the left moving block and the right moving block both rise for a certain distance, under the action of a first left rotating rod, a second left rotating rod, a left connecting rod, a first right rotating rod, a second right rotating rod and a right connecting rod, the angles of the left connecting ring and the right connecting ring change along with the stress direction of the left connecting ring and the right connecting ring, the possibility of fracture is reduced, after the lifting is finished, the left connecting ring and the right connecting ring are respectively inserted into a left mounting groove and a right mounting groove, four grooves are reserved at the positions where a door frame needs to be mounted, and a first landing leg, a second landing leg, a third landing leg and a, then, a user clamps the aluminum alloy door to be installed in the frame body, so that the frame body is conveniently lifted, the damage to the frame body is reduced, and the use reliability is reduced; gyro wheel protrusion in bracing piece, the bracing piece can use first gag lever post to rotate as the axle, the dead lever can use the second gag lever post to rotate as the axle, under the spring action, the telescopic link inserts the inside adjustable length of dead lever, the telescopic link is rotatable articulated with the fixed block, when door and gyro wheel contact, the telescopic link inserts the length increase in flexible chamber, the gyro wheel, preceding pivot rotates with the back pivot, the spring forms the buffering to the impact force of door, it violently collides with the framework to hinder the door, the anti-collision performance is improved, reduce and use the limitation.

In the utility model, the first ball bearing 19 is arranged at the first limit hole, and the first limit rod 11 passes through the first ball bearing 19 and is connected with the first ball bearing 19 in a key way; first ball bearing improves the stability when the bracing piece rotates.

The utility model discloses a mute type aluminum alloy door frame, still include that second spacing hole department is provided with second ball bearing 20, second gag lever post 12 passes second ball bearing 20 and connects with second ball bearing 20 key; the second ball bearing improves stability when the fixed rod rotates.

The utility model discloses a mute type aluminum alloy door frame, still include stopper 21, stopper 21 bottom and the 14 lateral wall bottom of telescopic link are connected, the top lateral wall in the telescopic link cavity is provided with the spacing groove, stopper 21 inserts the inside of the spacing groove; the limiting block moves along the limiting groove to prevent the telescopic rod from being completely separated from the fixing rod.

In the utility model, the outer side wall of the roller 18 is provided with a rubber ring 22; the rubber ring is in contact with the door, reducing damage to the door while providing a damping effect.

In the utility model, the cross-sectional shapes of the first left sliding block 5, the second left sliding block 6, the first right sliding block, the second right sliding block, the first left sliding groove, the second left sliding groove, the first right sliding groove and the second right sliding groove are all T-shaped; first left sliding block, second left sliding block, first right sliding block, second right sliding block, first left sliding tray, second left sliding tray, first right sliding tray and second right sliding tray cross-sectional shape all are "T" type, improve stability.

The utility model discloses a mute type aluminum alloy door frame, first left turn trough, second left turn trough, first right turn trough and second right turn trough punishment do not are provided with four groups of third ball bearings 23, first left rotary rod 8 front end, second left rotary rod 9 rear end, first right rotary rod front end and second right rotary rod rear end insert four groups of third ball bearings 23 respectively and connect with four groups of third ball bearings 23 key-type respectively; the front end of the first left rotating rod, the rear end of the second left rotating rod, the front end of the first right rotating rod and the rear end of the second right rotating rod are respectively inserted into four groups of third ball bearings and are respectively in key connection with the four groups of third ball bearings, and stability is improved.

In the utility model, two groups of fourth ball bearings 24 are respectively arranged at the front rotary groove and the rear rotary groove, and the front rotary shaft 17 and the rear rotary shaft are respectively inserted into the two groups of fourth ball bearings 24 and are respectively connected with the two groups of fourth ball bearings 24; preceding pivot and back pivot insert respectively inside two sets of fourth ball bearing and respectively with two sets of fourth ball bearing key-types, improve gyro wheel rotational stability.

The utility model relates to a mute type aluminum alloy door frame, under the action of a first left sliding block, a second left sliding block, a first right sliding block and a second right sliding block, a left moving block and a right moving block can move up and down, the cross-sectional shapes of the first left sliding block, the second left sliding block, the first right sliding block, the second right sliding block, the first left sliding groove, the second left sliding groove, the first right sliding groove and the second right sliding groove are all T-shaped, when the frame body needs to be lifted, a crane hooks the left connecting ring and the right connecting ring, under the action of gravity, the left moving block and the right moving block both rise for a certain distance, and under the action of the first left rotating rod, the second left rotating rod, the left connecting rod, the first right rotating rod, the second right rotating rod and the right connecting rod, the angles of the left connecting ring and the right connecting ring change along with the stress direction of the left connecting ring and the right connecting ring, the possibility of fracture is reduced, the front end of a first left rotating rod, the rear end of a second left rotating rod, the front end of a first right rotating rod and the rear end of a second right rotating rod are respectively inserted into four groups of third ball bearings and are respectively connected with the four groups of third ball bearings in a key mode, after lifting is finished, a left connecting ring and a right connecting ring are respectively inserted into a left mounting groove and a right mounting groove, four grooves are reserved at positions where a door frame needs to be mounted, a first supporting leg, a second supporting leg, a third supporting leg and a fourth supporting leg are respectively inserted into the four grooves to fix the frame body, then a user clamps an aluminum alloy door needing to be mounted in the frame body, a roller protrudes out of a supporting rod, under the action of the first ball bearings and the second ball bearings, the supporting rod can rotate by taking the first limiting rod as a shaft, the fixing rod can rotate by taking the second limiting rod as a shaft, under the action of a spring, the length of the telescopic rod inserted, hinder the telescopic link and break away from completely with the dead lever, the telescopic link is rotatable articulated with the fixed block, and when the rubber ring contact on door and the gyro wheel, the telescopic link inserts the length increase in flexible chamber, under two sets of fourth ball bearing's effect, gyro wheel, preceding pivot and back pivot rotate, and the spring forms the buffering to the impact force of door, hinders door and framework and violently collides.

The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only. The terms "first," "second," "third," and the like in the description of the invention do not denote any particular quantity or order, but rather are used to distinguish one element from another.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A mute type aluminum alloy door frame comprises a frame body (1), a first supporting leg (2), a second supporting leg, a third supporting leg and a fourth supporting leg, wherein the right ends of the first supporting leg (2) and the second supporting leg are respectively connected with the top end and the bottom end of the left side wall of the frame body (1), and the left ends of the third supporting leg and the fourth supporting leg are respectively connected with the top end and the bottom end of the right side wall of the frame body (1); it is characterized by also comprising a left connecting rod (3), a left connecting ring (4), a first left sliding block (5), a second left sliding block (6), a left moving block (7), a first left rotating rod (8), a second left rotating rod (9), a right connecting rod, a right connecting ring, a first right sliding block, a second right sliding block, a right moving block, a first right rotating rod and a second right rotating rod, wherein a left mounting groove is arranged in the central area of the left half area of the top side wall of the frame body (1), a first left sliding groove and a second left sliding groove are respectively arranged on the inner front side wall and the inner rear side wall of the left mounting groove, the front end of the first left sliding block (5) and the rear end of the second left sliding block (6) are respectively inserted into the first left sliding groove and the second left sliding groove, the rear end of the first left sliding block (5) and the front end of the second left sliding block (6) are respectively connected with the bottom ends of the central areas of the front side wall, the left side wall of the left moving block (7) is provided with a left connecting groove communicated in the left-right direction, the inner front side wall and the inner rear side wall of the left connecting groove are respectively provided with a first left rotating groove and a second left rotating groove, the front end of a first left rotating rod (8) and the rear end of a second left rotating rod (9) are respectively inserted into the first left rotating groove and the second left rotating groove, the rear end of the first left rotating rod (8) and the front end of the second left rotating rod (9) are respectively connected with the front end and the rear end of a left connecting rod (3), the top end of the left connecting rod (3) is connected with the bottom end of a left connecting ring (4), the central area of the right half area of the top side wall of the frame body (1) is provided with a right mounting groove, the inner front side wall and the inner rear side wall of the right mounting groove are respectively provided with a first right sliding groove and a second right sliding groove, the front end and the rear end of the first right sliding block and the second sliding block are respectively inserted into the first right sliding groove and the second sliding block The bottom ends of the regions are connected, the top side wall of the right moving block is provided with a right connecting groove communicated in the left-right direction, the inner front side wall and the inner rear side wall of the right connecting groove are respectively provided with a first right rotating groove and a second right rotating groove, the front end of a first right rotating rod and the rear end of a second right rotating rod are respectively inserted into the first right rotating groove and the second right rotating groove, the rear end of the first right rotating rod and the front end of the second right rotating rod are respectively connected with the front end and the rear end of a right connecting rod, and the top end of the right connecting rod is connected with the bottom end of; the novel frame is characterized by further comprising a supporting rod (10), a first limiting rod (11), a second limiting rod (12), a fixing rod (13), a telescopic rod (14), a spring (15), a fixing block (16), a front rotating shaft (17), a rear rotating shaft and rollers (18), wherein a buffer groove is formed in the left side wall in the frame body (1), a first limiting hole is formed in the upper half area of the supporting rod (10), the first limiting rod (11) penetrates through the first limiting hole, the front end and the rear end of the first limiting rod (11) are respectively connected with the front side wall in the buffer groove and the upper half area of the inner rear side wall, a second limiting hole is formed in the lower half area of the fixing rod (13), the second limiting rod (12) penetrates through the second limiting hole, the front end and the rear end of the second limiting rod (12) are respectively connected with the front side wall in the buffer groove and the lower half area of the inner rear side wall, a clamping groove is formed in the right lower side of the supporting rod (10), a front side wall and a, preceding pivot (17) and back pivot one end insert preceding rotation groove respectively with back rotation inslot portion, preceding pivot (17) and the back pivot other end respectively with before gyro wheel (18) lateral wall and back lateral wall central zone be connected, fixed block (16) are connected with bracing piece (10) left side wall second region, fixed block (16) left side wall is provided with the hinge groove to the intercommunication at the bottom of the top, and dead lever (13) inside is provided with flexible chamber, and spring (15) are located flexible intracavity portion, and dead lever (13) top side wall intercommunication is provided with the flexible mouth, telescopic link (14) bottom edge flexible mouth insert flexible intracavity portion then with spring (15) top contact, telescopic link (14) top insert hinge inslot portion and with the rotatable articulated inslot lateral wall articulated.

2. A silent type al-alloy door frame according to claim 1, wherein the first limit hole is provided with a first ball bearing (19), and the first limit rod (11) passes through the first ball bearing (19) and is keyed with the first ball bearing (19).

3. A silent type aluminum alloy door frame as claimed in claim 2, further comprising a second ball bearing (20) provided at the second limit hole, the second limit rod (12) passing through the second ball bearing (20) and being keyed with the second ball bearing (20).

4. The silent type aluminum alloy door frame as claimed in claim 3, further comprising a limiting block (21), wherein the bottom end of the limiting block (21) is connected with the bottom end of the outer side wall of the telescopic rod (14), a limiting groove is formed in the top side wall in the telescopic cavity, and the limiting block (21) is inserted into the limiting groove.

5. A silent type aluminum alloy door frame as claimed in claim 4, wherein the rubber ring (22) is provided on the outer side wall of the roller (18).

6. A silent type aluminum alloy door frame as claimed in claim 5, wherein the first left slide block (5), the second left slide block (6), the first right slide block, the second right slide block, the first left slide groove, the second left slide groove, the first right slide groove and the second right slide groove are all "T" shaped in cross section.

7. The silent type aluminum alloy door frame according to claim 6, wherein four sets of third ball bearings (23) are provided at the first left rotating groove, the second left rotating groove, the first right rotating groove and the second right rotating groove, respectively, and the front end of the first left rotating lever (8), the rear end of the second left rotating lever (9), the front end of the first right rotating lever and the rear end of the second right rotating lever are inserted into the four sets of third ball bearings (23) and are respectively keyed with the four sets of third ball bearings (23).

8. A silent type aluminum alloy door frame as claimed in claim 7, wherein two sets of fourth ball bearings (24) are provided at the front rotary groove and the rear rotary groove, respectively, and said front rotary shaft (17) and said rear rotary shaft are inserted into the two sets of fourth ball bearings (24) and are keyed with the two sets of fourth ball bearings (24), respectively.