CN214996942U

CN214996942U - Buffer safety door closing device for rotating shaft door

Info

Publication number: CN214996942U
Application number: CN202022635268.6U
Authority: CN
Inventors: 谢炜; 郭丰; 马杰雄
Original assignee: Arrow Home Group Co Ltd
Current assignee: Arrow Home Group Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-12-03
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a safe door closing device with a buffer function for a rotating shaft door, which comprises a door connecting mechanism, a mounting seat, a transmission assembly and a damping mechanism, wherein the door connecting mechanism is connected with the rotating shaft door; the mounting seat is provided with a first containing cavity and a second containing cavity, damping oil is filled in the second containing cavity, the transmission assembly is arranged in the first containing cavity, the damping mechanism is arranged in the second containing cavity, the transmission assembly is connected with the damping mechanism through a containing hole, the door connecting mechanism is connected with the damping mechanism through the transmission assembly, and the damping mechanism provides motion resistance to the door connecting mechanism under the action of the damping oil. Adopt the utility model discloses, whole buffering is closed the door, simple structure, and the safety in utilization is high.

Description

Buffer safety door closing device for rotating shaft door

Technical Field

The utility model relates to a door closing device field, in particular to pivot door buffering safety door closing device.

Background

The existing rotating shaft door is a rotating shaft door without buffer, and needs to be manually closed, so that inconvenience is brought to the use of a user. If the force is too large when the door is closed, the hands are easy to be hurt, the noise of closing the door is large, the door cannot be closed in a buffering way in the whole process, and the use is unsafe. In addition, if ground level is not well treated, easy automatic acceleration closes the door, also can cause the clamp to hurt the hand equally, closes the big scheduling problem of door noise, has reduced user experience and has felt and use safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a pivot door buffering safety door closing device is provided, and whole buffering is closed the door, simple structure, and the safety in utilization is high.

The utility model aims to solve the technical problem still in, provide a pivot door buffering safety door closing device, realize automatic door closing, convenient to use, the safety in utilization is high.

In order to solve the technical problem, the utility model provides a rotating shaft door buffering safety door closing device, which comprises a door connecting mechanism, a mounting seat, a transmission assembly and a damping mechanism, wherein the door connecting mechanism is connected with the rotating shaft door, the transmission assembly and the damping mechanism are arranged in the mounting seat, and the door connecting mechanism is connected with the transmission assembly through the mounting seat;

the mounting seat is provided with a first containing cavity and a second containing cavity, damping oil is filled in the second containing cavity, the transmission assembly is arranged in the first containing cavity, the damping mechanism is arranged in the second containing cavity, the transmission assembly is connected with the damping mechanism through a containing hole, the door connecting mechanism is connected with the damping mechanism through the transmission assembly, and the damping mechanism provides motion resistance to the door connecting mechanism under the action of the damping oil.

As an improvement of the scheme, the damping mechanism comprises a piston and a sealing assembly arranged on the piston, the piston divides the second containing cavity into a first oil area and a second oil area through the sealing assembly, the piston is provided with an oil hole, the first oil area is communicated with the second oil area through the oil hole, and the transmission assembly penetrates through the containing hole to enter the first oil area to be connected with the piston.

As a modification of the above aspect, the oil holes include a first oil hole and a second oil hole, and the diameter of the second oil hole is larger than that of the first oil hole.

As an improvement of the above scheme, the damping mechanism further comprises a damping assembly arranged on the piston, and the damping assembly is used for opening or closing the second oil hole so as to change the motion resistance received by the damping mechanism.

As an improvement of the above scheme, the sealing assembly is arranged on one side of the piston close to the first oil area, and the damping assembly is arranged on one side of the piston close to the second oil area;

the sealing assembly comprises a sealing groove arranged on the outer side wall of the piston and a sealing ring arranged on the sealing groove, and the piston is connected with the inner side wall of the second cavity in a sealing mode through the sealing ring;

damping subassembly is including locating the damping groove of piston lateral wall and installing the damping ring on the damping groove, the piston passes through damping ring and the inside wall sealing connection that the second holds the chamber, second oilhole one end opening is towards first oil district, and the other end opening is located the damping groove diapire and is close to in one side in second oil district, the width of damping groove is greater than the thickness of damping ring, the thickness of damping ring is greater than the diameter of second oilhole.

As an improvement of the scheme, the mounting seat is provided with a sealing cover used for sealing the second containing cavity, an elastic component is arranged in the second oil area, one end of the elastic component is abutted with the piston, and the other end of the elastic component is abutted with the sealing cover.

As an improvement of the scheme, the transmission assembly comprises a hinge shaft, a connecting rod and a piston rod, the hinge shaft, the connecting rod and the piston rod are sequentially and movably connected, the piston rod penetrates through the accommodating hole and enters the first oil area to be connected with the piston, and the hinge shaft is connected with the door connecting mechanism.

As an improvement of the scheme, the transmission assembly further comprises a first pin and a second pin, the connecting rod is hinged with the hinge shaft through the first pin, and the connecting rod is hinged with the damping shaft through the second pin.

As an improvement of the above scheme, the hinge shaft comprises a shaft body and a connecting block arranged on the shaft body, the connecting block is provided with a first pin hole, one end of the connecting rod is provided with a first through hole, and the first pin penetrates through the first pin hole and the first through hole;

the piston rod is provided with a second pin hole, the other end of the connecting rod is provided with a second through hole, and the second pin penetrates through the second pin hole and the second through hole.

As an improvement of the above scheme, the containing hole is provided with a groove, and the groove is provided with a sealing ring for sealing the containing hole and the piston rod;

the door connecting mechanism comprises a door fixing piece and a rotating shaft, the door fixing piece is connected with the rotating shaft door, the shaft body is provided with a shaft hole, and the rotating shaft penetrates through the shaft hole to drive the hinge shaft to rotate;

the lateral wall of pivot is equipped with first screens, the inside wall in shaft hole is equipped with the second screens, first screens and second screens are connected to make the circumference relatively fixed of pivot and hinge pin.

Implement the utility model discloses, following beneficial effect has:

the utility model discloses pivot door buffering safety door closing device is equipped with damping mechanism, and door coupling mechanism is connected with drive assembly, and damping mechanism receives the effect of damping oil and provides the motion resistance through drive assembly to door coupling mechanism to play the cushioning effect, guarantee whole buffering and close the door, avoid hard too big or because of ground level does not have the processing well and appear pressing from both sides hindering the hand, the condition such as door noise is big, simple structure, and is with low costs, has also improved user experience and has felt and safety in utilization.

Specifically, damping mechanism includes piston, seal assembly and damping component, and the piston passes through seal assembly and separates into two independent oil areas with the second appearance chamber: a first oil zone and a second oil zone. The piston is provided with oil holes including a first oil hole and a second oil hole. Damping oil flows between first oil field and second oil field through first oilhole and second oilhole, produces the resistance for damping mechanism's motion to produce the resistance for door coupling mechanism's rotation, play the cushioning effect to the rotation of pivot door, realize whole buffering and close the door, press from both sides when avoiding closing the door and hinder the hand, the noise of closing the door is big, has improved user experience and has felt and safety in utilization.

Wherein, damping assembly includes damping groove and damping ring, and the width of damping groove is greater than the thickness of damping ring, the thickness of damping ring is greater than the diameter of second oilhole, and the opening that the second oilhole accesss to second oil district is located the damping groove diapire and is close to the one side in second oil district moreover. When opening the door, pivot door clockwise turning, door coupling mechanism passes through the transmission subassembly to the drive of damping mechanism, makes damping mechanism move to second oil district from first oil district, and the damping ring moves to damping groove near first oil district one side because of receiving the effect that the second holds the chamber inside wall, makes the second oilhole open, and the damping oil accessible in the second oil district flows into first oil district with the second oilhole. When closing the door, pivot door anticlockwise rotation, door coupling mechanism passes through the transmission subassembly to the damping mechanism transmission, make damping mechanism move to first oil field from the second oil field, the damping ring is close to second oil field one side removal to the damping groove because of receiving the effect of second appearance chamber inside wall, at this moment, the second oilhole is stopped up to the damping ring, make the second oilhole close, damping oil in the first oil field can only flow into first oil field through first oilhole, compare in when closing the door, the flow that damping oil flowed through the piston reduces, make the piston slow movement, thereby the rotatory speed of pivot door has been slowed down, the effect of buffering door closing is played, avoid exerting oneself too greatly or because ground level does not handle the good and appear pressing from both sides wounded, the condition such as door closing noise is big, user experience sense and safety in utilization have been improved.

Further, the utility model discloses still be equipped with elastomeric element in the second oil district. When the door is opened, the piston moves to the second oil area to compress the elastic part and store kinetic energy. When the door is closed, the elastic component releases the kinetic energy stored in the compression mode and acts on the piston, and the piston moves towards the first oil area under the action of the elastic component, so that the rotating shaft door automatically rotates, the effect of automatically closing the door is achieved, the door does not need to be manually closed, and the door is convenient to use. Meanwhile, the piston can only move slowly under the action of the damping assembly, so that the effect of buffering and closing the door is achieved, and the use safety is high.

Drawings

Fig. 1 is a schematic structural view of the safety buffer door closing device of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the inner structure of the mounting seat when the door of the present invention is opened;

FIG. 4 is a cross-sectional view of the mount of FIG. 3;

FIG. 5 is an enlarged view of a portion of the damping mechanism of FIG. 4;

FIG. 6 is a schematic view of the inner structure of the mounting seat when the door is opened or closed;

FIG. 7 is a cross-sectional view of the mount of FIG. 6;

FIG. 8 is an enlarged view of a portion of the damping mechanism of FIG. 7;

FIG. 9 is a schematic structural view of the piston of FIG. 2;

FIG. 10 is a schematic structural view of the door attachment mechanism of FIG. 2;

FIG. 11 is a schematic structural view of the transmission assembly of FIG. 2;

fig. 12 is an exploded view of fig. 11.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. Only this statement, the utility model discloses the upper and lower, left and right, preceding, back, inside and outside etc. position words that appear or will appear in the text only use the utility model discloses an attached drawing is the benchmark, and it is not right the utility model discloses a concrete restriction.

Referring to fig. 1-12, the utility model discloses a pivot door buffering safety door closing device, including door coupling mechanism, mount pad 3, drive assembly and damping mechanism, door coupling mechanism is connected with the pivot door, drive assembly and damping mechanism locate in mount pad 3, door coupling mechanism is connected with drive assembly through mount pad 3.

The mounting base 3 is provided with a first containing cavity 31 and a second containing cavity 32, damping oil is filled in the second containing cavity 32, the transmission assembly is arranged in the first containing cavity 31, the damping mechanism is arranged in the second containing cavity 32, the transmission assembly is connected with the damping mechanism through a containing hole 33, the door connecting mechanism is connected with the damping mechanism through the transmission assembly, and the damping mechanism provides motion resistance to the door connecting mechanism under the action of the damping oil.

As shown in fig. 3 to 8, the damping mechanism includes a piston 9 and a sealing assembly disposed on the piston 9, the piston 9 divides the second cavity 32 into a first oil area 321 and a second oil area 322 by the sealing assembly, the piston 9 is provided with oil holes, the first oil area 321 and the second oil area 322 are communicated through the oil holes, and the transmission assembly passes through the cavity 33 and enters the first oil area 321 to be connected with the piston 9. The first cavity 31 is communicated with the second cavity 32 through the cavity 33, and the transmission assembly arranged in the first cavity 31 passes through the cavity 33, enters the first oil area 321 of the second cavity 32, and is connected with the piston 9, so that the transmission assembly transmits to the piston 9. The damping mechanism divides the second containing cavity into two independent oil areas, and damping oil in the two oil areas can only flow through oil holes in the piston.

As shown in fig. 5 and 8-9, the seal assembly includes a seal groove 93 disposed on an outer side wall of the piston 9 and a seal ring 10 mounted on the seal groove 93, and the piston 9 is sealingly connected with an inner side wall of the second cavity 32 through the seal ring 10. The sealing ring 10 is made of rubber. The sealing groove 93 is circumferentially arranged along the outer side wall of the piston 9, and the sealing ring 10 is sleeved outside the piston 9. The sealing ring is arranged to ensure that no gap exists between the piston and the inner side wall of the second cavity, and damping oil is prevented from flowing between the piston and the inner side wall of the second cavity. The sealing groove is arranged to ensure that the sealing ring is fixedly arranged on the piston and prevent the sealing ring from being separated from the piston when the piston moves.

Specifically, as shown in fig. 9, the oil holes include a first oil hole 91 and a second oil hole 92, and the diameter of the second oil hole 92 is larger than that of the first oil hole 91. Preferably, the diameter of the second oil hole 92 is 2 times or more the diameter of the first oil hole 91. The piston is provided with two oil holes, damping oil in the first oil area can flow to the second oil area through the first oil hole and the second oil hole, and damping oil in the second oil area can also flow to the first oil area through the first oil hole and the second oil hole. When the piston moves towards the first oil area, the damping oil in the first oil area flows to the second oil area through the first oil hole and the second oil hole, so that the movement of the piston is realized, and the piston is subjected to the resistance of the damping oil in the first oil area. When the piston moves towards the second oil area, the damping oil in the second oil area flows to the first oil area through the first oil hole and the second oil hole, so that the movement of the piston is realized, and the piston is subjected to the resistance of the damping oil in the second oil area.

As shown in fig. 3-7 and 11-12, the transmission assembly includes a hinge shaft 4, a connecting rod 5 and a piston rod 6, the hinge shaft 4, the connecting rod 5 and the piston rod 6 are sequentially and movably connected, the piston rod 6 is inserted into the accommodating hole 33 and enters the first oil zone 321 to be connected with the piston 9, and the hinge shaft 4 is connected with the door connection mechanism.

Preferably, as shown in fig. 11-12, the transmission assembly further includes a first pin and a second pin, the link is hinged to the hinge shaft by the first pin, and the link is hinged to the damping shaft by the second pin. Specifically, the hinge shaft 4 includes a shaft body 41 and a connecting block 42 disposed on the shaft body 41, the connecting block 42 is provided with a first pin hole 421, one end of the connecting rod 5 is provided with a first through hole 51, and the first pin 421 penetrates through the first pin hole 421 and the first through hole 51. The piston rod 6 is provided with a second pin hole 61, the other end of the connecting rod 5 is provided with a second through hole 52, and the second pin 8 penetrates through the second pin hole 61 and the second through hole 52.

Preferably, the number of the connecting blocks 42 is two, the first pin holes 421 are coaxially arranged, the first pin holes 421 are parallel to the axis of the shaft body 41, and the connecting rod 5 is arranged between the two connecting blocks 42. The two connecting blocks 42 are arranged in parallel, the first pin holes 421 are coaxially arranged, and the first pin 7 sequentially passes through the first pin hole 421, the first through hole 51 and the second first pin hole 421. The arrangement of the two connecting blocks ensures that the connecting rod is firmly connected with the hinge shaft through the first pin, and ensures the transmission reliability of the hinge shaft.

Preferably, the piston rod 6 is further provided with a notch, the second pin hole 61 opens into the notch, the connecting rod 5 is embedded in the notch, and the second pin 8 is arranged on the second pin hole 61 and the second through hole 52 in a penetrating manner. The second pin 8 is sequentially arranged on the second pin hole 61 and the second through hole 52 in a penetrating manner. The arrangement of the notch ensures that the connecting rod is stably connected with the piston rod through the second pin, and ensures the reliability of the transmission of the connecting rod.

As shown in fig. 4, 7, and 10-12, the door connection mechanism includes a door fixing member 1 and a rotating shaft 2, the door fixing member 1 is connected to the rotating shaft door, the shaft body 41 is provided with a shaft hole 411, and the rotating shaft 2 is inserted into the shaft hole 411 to drive the hinge shaft 4 to rotate. The rotating shaft door can use the rotating shaft as a shaft and rotate around the rotating shaft through the door fixing piece, so that the door is opened and closed. The rotating shaft penetrates through the shaft hole to achieve the purpose of being connected with the hinge shaft, and the rotating shaft can drive the hinge shaft to rotate together when rotating.

Preferably, the outer side wall of the rotating shaft 2 is provided with a first clamping portion 21, the inner side wall of the shaft hole 411 is provided with a second clamping portion 412, and the first clamping portion 21 and the second clamping portion 412 are connected to fix the rotating shaft 2 and the hinge shaft 4 relatively in the circumferential direction. In order to ensure the reliability of the rotation of the hinge shaft driven by the rotating shaft and the rotation thereof, a first clamping position and a second clamping position are arranged, so that the rotating shaft and the hinge shaft are mutually clamped in the circumferential direction, and the hinge shaft can be accurately driven to rotate through the rotating shaft when the rotating shaft door rotates by taking the rotating shaft as the shaft.

When the rotating shaft door is opened, the rotating shaft 2 drives the hinge shaft 4 to rotate clockwise, the connecting rod 5 is pushed, the connecting rod 5 pushes the piston rod 6 to move towards the second accommodating cavity 32, and the piston rod 6 pushes the piston 9 to move from the first oil area 321 to the second oil area 322. At this time, the piston 9 receives resistance of the damping oil of the second oil zone 322, and the damping oil of the second oil zone 322 flows to the first oil zone 321 through the first oil holes 91 and the second oil holes 92. When the rotating shaft door is closed, the rotating shaft 2 drives the hinge shaft 4 to rotate counterclockwise, the connecting rod 5 is pulled, the connecting rod 5 pulls the piston rod 6 to move towards the first accommodating cavity 31, and the piston rod 6 drives the piston 9 to move from the second oil area 322 to the first oil area 321. At this time, the piston 9 receives resistance of the damping oil of the first oil zone 321, and the damping oil of the first oil zone 321 flows to the second oil zone 322 through the first oil holes 91 and the second oil holes 92.

Preferably, as shown in fig. 5, the receiving hole 33 is provided with a recess 331, and the recess 331 is provided with a sealing ring 332 for sealing between the receiving hole 33 and the piston rod 6. The seal 332 is made of rubber. In order to prevent the gap between the containing hole and the piston rod from leaking damping oil, the sealing ring is arranged on the containing hole, so that the sealing effect is achieved, and the damping oil in the second containing cavity is prevented from flowing into the first containing cavity.

Further, in order to open the door smoothly and close the door in a full stroke buffering manner, as shown in fig. 4-5 and 7-8, the damping mechanism further includes a damping member provided on the piston 9 for opening or closing the second oil hole 92 to change the movement resistance applied to the damping mechanism. Damping assembly is including locating the damping groove 94 of piston 9 lateral wall and installing damping ring 11 on damping groove 94, piston 9 passes through damping ring 11 and the inside wall sealing connection that the second holds chamber 32, first oil zone 321 of second oilhole 92 one end opening orientation, the other end opening is located damping groove 94 diapire and is close to in one side of second oil zone 322, the width of damping groove 94 is greater than the thickness of damping ring 11, the thickness of damping ring 11 is greater than the diameter of second oilhole 92. The damping ring 11 is made of rubber. The damping groove 91 is circumferentially arranged along the outer side wall of the piston 9, and the damping ring 11 is sleeved outside the piston 9. The damping ring is arranged, so that no gap exists between the piston and the inner side wall of the second cavity, and damping oil is prevented from flowing between the piston and the inner side wall of the second cavity. The arrangement of the damping groove ensures that the damping ring is arranged on the piston and prevents the damping ring from being separated from the piston when the piston moves.

In order to enable the first oil area and the second oil area to communicate with each other through the second oil hole, the sealing assembly is disposed on the piston 9 on a side close to the first oil area 321, and the damping assembly is disposed on the piston 9 on a side close to the second oil area 322. Therefore, the opening of the second oil hole on the damping groove is not communicated with the second oil area due to the blocking of the sealing assembly, so that the damping oil cannot flow between the first oil area and the second oil area through the second oil hole.

As shown in fig. 5, when the piston 9 moves from the first oil area 321 to the second oil area 322 under the action of the piston rod 6, due to the friction between the damping ring 11 and the inner side wall of the second receiving cavity 32, the damping ring 11 moves toward the direction in which the damping groove 94 approaches the first oil area 321, at this time, the opening of the second oil hole 92 formed in the damping groove 94 is opened, the damping oil in the second oil area 322 flows to the first oil area 321 from the first oil hole 91 and the second oil hole 92 at the same time, as shown by the arrow in fig. 5, the damping force applied to the piston 9 is small, the piston 9 moves fast, and the door opening is fast and smooth. As shown in fig. 8, when the piston 9 moves from the second oil area 322 to the first oil area 321 under the action of the piston rod 6, due to the friction between the damping ring 11 and the inner side wall of the second receiving cavity 32, the damping ring 11 moves toward the direction in which the damping groove 94 approaches the second oil area 322, at this time, the damping ring 11 blocks the opening of the second oil hole 92 formed in the damping groove 94, so that the second oil hole 92 is closed, and the damping oil in the first oil area 321 can only flow from the first oil hole 91 to the second oil area 322, as shown by the arrow in fig. 8, the damping force applied to the piston 9 is large, and the piston 9 moves slowly, and the door closing is slow and blocked, thereby playing a role of buffering the door closing in the whole process.

Still further, the mounting seat 9 is provided with a sealing cover 323 for sealing the second cavity 32, the second oil area 322 is internally provided with an elastic component 12, one end of the elastic component 12 abuts against the piston 9, and the other end abuts against the sealing cover 323. The elastic member 12 is a spring. The arrangement of the sealing cover is convenient for the installation of the damping mechanism and the elastic component and the filling of damping oil. The piston 9 compresses the elastic member 12 when moving toward the second oil zone 322. When the piston 9 moves to the first oil zone 321, the elastic part 12 is released, and meanwhile, the elastic part 12 automatically moves forward under the action of the elastic part 12 due to the fact that the elastic part 12 releases and stores the thrust for the piston 9 to move forward, so that the rotating shaft door automatically rotates, automatic door closing is achieved, manual door closing is not needed, the use is convenient, the problem that hands are injured by clamping caused by manual door closing is avoided, and the use safety is high. Meanwhile, since the diameter of the second oil hole 92 is larger than that of the first oil hole 91, the resistance to the movement of the piston 9 from the second oil area 322 to the first oil area 321 is much larger than the resistance to the movement of the piston 9 from the first oil area 321 to the second oil area 322, and therefore, the piston 9 cannot move forward rapidly even under the action of the elastic member 12, thereby achieving the purpose of full-stroke buffering automatic door closing.

The utility model discloses pivot door buffering safety door closing device's theory of operation is: when the door is opened, as shown in fig. 3-5, the door connecting mechanism rotates clockwise along with the rotating shaft door, and drives the hinge shaft 4 to rotate clockwise, the hinge shaft 4 pushes the connecting rod 5 and the piston rod 6 to move from the first cavity 31 to the second cavity 32, so that the piston 9 moves from the first oil area 321 to the second oil area 322, at this time, the piston 9 compresses the elastic component 12, the damping ring 11 moves to one side of the first oil area 321, the second oil hole 92 is opened, and the damping oil in the second oil area 322 flows to the first oil area 321 through the first oil hole 91 and the second oil hole 92, as shown by arrows in fig. 5. When the door is closed, as shown in fig. 6-8, the door connecting mechanism rotates counterclockwise along with the rotating shaft door and drives the hinge shaft 4 to rotate counterclockwise, the hinge shaft 4 pulls the connecting rod 5 and the piston rod 6 to move from the second receiving cavity 32 to the first receiving cavity 31, so that the piston 9 moves from the second oil area 322 to the first oil area 321, at this time, the piston 9 releases the elastic component 12, the elastic component 12 pushes the piston 9 to move toward the first oil area 321 due to the recovery, the damping ring 11 moves toward the second oil area 322 side, blocks the second oil hole 92, closes the second oil hole 92, and the damping oil in the first oil area 321 can only flow to the first oil area 321 through the first oil hole 91, as shown by an arrow in fig. 8.

In summary, the utility model provides a rotary shaft door buffering safety door closing device, which can buffer the door closing in the whole process, has simple structure and high use safety; realize automatic door closing, convenient to use, the safety in utilization is high.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A rotary shaft door buffering safety door closing device is characterized by comprising a door connecting mechanism, a mounting seat, a transmission assembly and a damping mechanism, wherein the door connecting mechanism is connected with a rotary shaft door, the transmission assembly and the damping mechanism are arranged in the mounting seat, and the door connecting mechanism is connected with the transmission assembly through the mounting seat;

2. The door buffering safety door closing device with the rotating shaft as claimed in claim 1, wherein the damping mechanism comprises a piston and a sealing assembly arranged on the piston, the piston divides the second containing cavity into a first oil area and a second oil area through the sealing assembly, the piston is provided with an oil hole, the first oil area and the second oil area are communicated through the oil hole, and the transmission assembly penetrates through the containing hole to enter the first oil area to be connected with the piston.

3. The spindle door buffering safety door closing device according to claim 2, wherein the oil hole includes a first oil hole and a second oil hole, and a diameter of the second oil hole is larger than a diameter of the first oil hole.

4. The revolving-shaft-door buffering safety door-closing device of claim 3, characterized in that the damping mechanism further comprises a damping component arranged on the piston, and the damping component is used for opening or closing the second oil hole so as to change the motion resistance received by the damping mechanism.

5. The door buffering safety door closing device with the rotating shaft as claimed in claim 4, wherein the sealing assembly is arranged on one side of the piston close to the first oil area, and the damping assembly is arranged on one side of the piston close to the second oil area;

6. The revolving shaft door buffering safety door closing device according to any one of claims 2 to 5, wherein the mounting seat is provided with a sealing cover for sealing the second cavity, an elastic component is arranged in the second oil area, one end of the elastic component is abutted with the piston, and the other end of the elastic component is abutted with the sealing cover.

7. The door buffering safety door closing device of claim 2, wherein the transmission assembly comprises a hinge shaft, a connecting rod and a piston rod, the hinge shaft, the connecting rod and the piston rod are sequentially and movably connected, the piston rod is arranged on the containing hole in a penetrating way and enters the first oil area to be connected with the piston, and the hinge shaft is connected with the door connecting mechanism.

8. The door buffering safety door closing device with rotating shaft of claim 7, wherein the transmission assembly further includes a first pin and a second pin, the link is hinged to the hinge shaft via the first pin, and the link is hinged to the damping shaft via the second pin.

9. The door buffering safety closer device of claim 8, wherein the hinge shaft comprises a shaft body and a connecting block arranged on the shaft body, the connecting block is provided with a first pin hole, one end of the connecting block is provided with a first through hole, and the first pin is arranged on the first pin hole and the first through hole in a penetrating way;

10. The buffering safety door closing device of the rotating shaft door as claimed in claim 9, wherein the accommodating hole is provided with a groove, and the groove is provided with a sealing ring for sealing between the accommodating hole and the piston rod;