Heavy sliding door

Abstract

The utility model discloses a heavy sliding door which comprises a door frame, a fixed leaf, a first movable leaf and a second movable leaf are arranged in the door frame, the door frame comprises a first vertical door frame and a second vertical door frame, and a first anti-swing structure and a second anti-swing structure are arranged between the fixed leaf and the first vertical door frame. A third anti-swing structure and a fourth anti-swing structure are arranged between the first movable leaf and the fixed leaf, a fifth anti-swing structure and a first sealing structure are arranged between the second movable leaf and the first movable leaf, and a sixth anti-swing structure and a seventh anti-swing structure are arranged between the second movable leaf and the second vertical door frame. The heavy sliding door has the advantages of being high in connection stability, good in anti-swing performance, good in noise reduction effect and high in use safety.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware doors and windows, in particular to a heavy sliding door. Background Art

[0002] Sliding doors are doors that can be pushed and pulled. They do not occupy indoor space when opened or closed. Therefore, they are widely used in buildings such as houses. They can separate or connect indoor space with outdoor space by pushing and pulling. In order to ensure movement, existing sliding doors need to retain gaps for movement during installation. However, in windy weather, these gaps will affect the stability of the sliding doors and make collision noises. If the sliding doors are affected by strong winds and cause swings and tipping, it will cause serious safety hazards. In order to ensure the safety of sliding doors and windows, sliding doors need to have good anti-swaying performance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a heavy-duty sliding door with high connection stability, good anti-swing performance, good noise reduction effect and high safety in use.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A heavy-duty sliding door comprises a door frame, wherein a fixed leaf, a first movable leaf and a second movable leaf are arranged in the door frame, the door frame comprises a first vertical door frame and a second vertical door frame, a first anti-swing structure and a second anti-swing structure are arranged between the fixed leaf and the first vertical door frame, a third anti-swing structure and a fourth anti-swing structure are arranged between the first movable leaf and the fixed leaf, a fifth anti-swing structure and a first sealing structure are arranged between the second movable leaf and the first movable leaf, and a sixth anti-swing structure and a seventh anti-swing structure are arranged between the second movable leaf and the second vertical door frame.

[0006] As a further improvement of the above technical solution:

[0007] The first vertical door frame comprises a first door frame profile, a second door frame profile, a third door frame profile and a first door frame heat insulation strip, the third door frame profile and the first door frame heat insulation strip are connected between the first door frame profile and the second door frame profile, a first flat groove is formed on the second door frame profile, a first anti-collision block is arranged in the first flat groove, a second flat groove is formed on the third door frame profile, and a second anti-collision block is arranged in the second flat groove;

[0008] The fixed fan comprises a first fixed fan column, a first glass and a second fixed fan column, wherein the first fixed fan column comprises a first fixed fan profile, a first fixed fan heat insulation strip and a second fixed fan profile;

[0009] The first anti-sway structure includes a first anti-sway member disposed in the first flat groove and a second anti-sway member disposed on the second fixed sash profile, the first anti-sway member abuts against the second fixed sash profile, and the second anti-sway member abuts against the second door frame profile;

[0010] The second anti-swing structure includes a third anti-swing component arranged in the second flat groove and a fourth anti-swing component arranged on the first fixed fan profile. The third anti-swing component abuts against the first fixed fan profile, and the fourth anti-swing component abuts against the third door frame profile.

[0011] The second fixed fan column includes a third fixed fan profile, a second fixed fan heat insulation strip and a fourth fixed fan profile, the third fixed fan profile is formed with a third flat slot, a third anti-collision block is arranged in the third flat slot, the fourth fixed fan profile is formed with a fourth flat slot, a fourth anti-collision block is arranged in the fourth flat slot;

[0012] The first movable fan comprises a first movable fan column A, a second glass and a first movable fan column B, wherein the first movable fan column A comprises a first movable fan profile, a first movable fan heat insulation strip and a second movable fan profile;

[0013] The third anti-sway structure comprises a fifth anti-sway member disposed on the second movable fan profile, the fifth anti-sway member abutting against the fourth fixed fan profile;

[0014] The fourth anti-sway structure includes a sixth anti-sway component disposed on the first movable fan profile, and the sixth anti-sway component abuts against the third fixed fan profile.

[0015] The first movable fan column B comprises a third movable fan profile, a second movable fan heat insulation strip and a fourth movable fan profile, and a first extending protrusion is provided on a side of the third movable fan profile away from the fourth movable fan profile;

[0016] The second movable fan comprises a second movable fan column A, a third glass and a second movable fan column B, the second movable fan column B comprises a fifth movable fan profile, a third movable fan heat insulation strip and a sixth movable fan profile, and a second extending protrusion is provided on a side of the sixth movable fan profile away from the fifth movable fan profile;

[0017] The fifth anti-sway structure includes a seventh anti-sway component provided on the first extending protrusion and an eighth anti-sway component provided on the second extending protrusion, the seventh anti-sway component abuts against the sixth movable fan profile, and the eighth anti-sway component abuts against the fourth movable fan profile;

[0018] The first sealing structure includes a first sealing strip disposed on the first extending protrusion and a second sealing strip disposed on the second extending protrusion, and the first sealing strip abuts against the second sealing strip.

[0019] The second movable fan column A includes a seventh movable fan profile, a fourth movable fan heat insulation strip and an eighth movable fan profile;

[0020] The second vertical door frame includes a fourth door frame profile, a fifth door frame profile, a sixth door frame profile and a second door frame heat insulation strip, the sixth door frame profile and the second door frame heat insulation strip are connected between the fourth door frame profile and the fifth door frame profile, a fifth flat groove is formed on the sixth door frame profile, a fifth anti-collision block is arranged in the fifth flat groove, a sixth flat groove is formed on the fifth door frame profile, and a sixth anti-collision block is arranged in the sixth flat groove;

[0021] The sixth anti-sway structure comprises a ninth anti-sway piece arranged in the fifth flat groove and a tenth anti-sway piece arranged on the eighth movable fan profile, the ninth anti-sway piece abuts against the eighth movable fan profile, and the tenth anti-sway piece abuts against the sixth door frame profile;

[0022] The seventh anti-swing structure includes an eleventh anti-swing piece arranged in the sixth flat groove and a twelfth anti-swing piece arranged on the seventh movable fan profile. The eleventh anti-swing piece abuts against the seventh movable fan profile, and the twelfth anti-swing piece abuts against the fifth door frame profile.

[0023] Compared with the prior art, the advantages of the utility model are:

[0024] The heavy-duty sliding door of the utility model comprises a fixed leaf, a first movable leaf and a second movable leaf. By arranging a plurality of anti-swing structures in the gaps between the first vertical door frame and the fixed leaf, between the first movable leaf and the fixed leaf, between the first movable leaf and the second movable leaf, and between the second movable leaf and the second vertical door frame, the anti-swing structure can absorb the impact vibration generated when the door leaf is closed or collides, thereby achieving good noise reduction effect, and can limit the door leaf in the closed state, thereby improving the connection stability between the door leaves and between the door leaves and the door frame 1, having good anti-swing performance, and being able to effectively improve the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a heavy sliding door.

[0026] Figure 2 for Figure 1 Schematic diagram of the cross section along the AA direction.

[0027] Figure 3It is a schematic diagram of the structure of the first door frame and the first fixed leaf column.

[0028] Figure 4 It is a structural schematic diagram of the second fixed fan column and the first movable fan column A.

[0029] Figure 5 It is a structural schematic diagram of the first movable fan column B and the second movable fan column B.

[0030] Figure 6 It is a structural schematic diagram of the second movable door column A and the second door frame.

[0031] Legend:

[0032] 1. Door frame; 101. First door frame; 1011. First door frame profile; 1012. Second door frame profile; 1013. Third door frame profile; 1014. First door frame insulation strip; 102. Second door frame; 1021. Fourth door frame profile; 1022. Fifth door frame profile; 1023. Sixth door frame profile; 1024. Second door frame insulation strip; 2. Fixed sash; 201. First fixed sash column; 2011. First fixed sash profile; 2012. First fixed sash insulation strip; 2013. Second fixed sash profile; 202. First glass; 203. Second fixed sash Fixed fan column; 2031, third fixed fan profile; 2032, second fixed fan insulation strip; 2033, fourth fixed fan profile; 3, first movable fan; 301, first movable fan column A; 3011, first movable fan profile; 3012, first movable fan insulation strip; 3013, second movable fan profile; 302, second glass; 303, first movable fan column B; 3031, third movable fan profile; 3032, second movable fan insulation strip; 3033, fourth movable fan profile; 3034, first extension convex portion; 4, second movable fan; 401, second movable fan column Column A; 4011, seventh movable fan profile; 4012, fourth movable fan insulation strip; 4013, eighth movable fan profile; 402, third glass; 403, second movable fan column B; 4031, fifth movable fan profile; 4032, third movable fan insulation strip; 4033, sixth movable fan profile; 4034, second extended protrusion; 5, first anti-sway structure; 501, first anti-sway member; 502, second anti-sway member; 6, second anti-sway structure; 601, third anti-sway member; 602, fourth anti-sway member; 7, third anti-sway structure; 701, fifth anti-sway member; 8, fourth Anti-sway structure; 801, the sixth anti-sway member; 9, the fifth anti-sway structure; 901, the seventh anti-sway member; 902, the eighth anti-sway member; 10, the first sealing structure; 1001, the first sealing rubber strip; 1002, the second sealing rubber strip; 11, the sixth anti-sway structure; 1101, the ninth anti-sway member; 1102, the tenth anti-sway member; 12, the seventh anti-sway structure; 1201, the eleventh anti-sway member; 1202, the twelfth anti-sway member; 13, the first anti-collision block; 14, the second anti-collision block; 15, the third anti-collision block; 16, the fourth anti-collision block; 17, the fifth anti-collision block; 18, the sixth anti-collision block. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] like Figure 1 and Figure 2As shown, the heavy-duty sliding door of this embodiment includes a door frame 1, in which a fixed leaf 2, a first movable leaf 3 and a second movable leaf 4 are arranged, the door frame 1 includes a first vertical door frame 101 and a second vertical door frame 102, a first anti-swing structure 5 and a second anti-swing structure 6 are arranged between the fixed leaf 2 and the first vertical door frame 101, a third anti-swing structure 7 and a fourth anti-swing structure 8 are arranged between the first movable leaf 3 and the fixed leaf 2, a fifth anti-swing structure 9 and a first sealing structure 10 are arranged between the second movable leaf 4 and the first movable leaf 3, and a sixth anti-swing structure 11 and a seventh anti-swing structure 12 are arranged between the second movable leaf 4 and the second vertical door frame 102. The heavy-duty sliding door comprises a fixed leaf 2, a first movable leaf 3 and a second movable leaf 4. A plurality of anti-swing structures are arranged in the gaps between the first vertical door frame 101 and the fixed leaf 2, between the first movable leaf 3 and the fixed leaf 2, between the first movable leaf 3 and the second movable leaf 4, and between the second movable leaf 4 and the second vertical door frame 102. The anti-swing structure can absorb the impact vibration generated when the door leaf is closed or collides, thereby achieving good noise reduction effect, and can limit the door leaf in the closed state, thereby improving the connection stability between the door leaves and between the door leaves and the door frame 1, having good anti-swing performance, and being able to effectively improve the safety of use.

[0035] like Figure 3 As shown, preferably, the first vertical door frame 101 includes a first door frame profile 1011, a second door frame profile 1012, a third door frame profile 1013 and a first door frame thermal insulation strip 1014, the third door frame profile 1013 and the first door frame thermal insulation strip 1014 are connected between the first door frame profile 1011 and the second door frame profile 1012, the second door frame profile 1012 is formed with a first flat groove, the first flat groove is provided with a first anti-collision block 13, the third door frame profile 1013 is formed with a second flat groove, the second flat groove is provided with a second anti-collision block 14; the fixed fan 2 includes a first fixed fan column 201, a first glass 202 and a second fixed fan column 203, the first fixed fan column 201 includes a first fixed fan profile 2011, a first fixed fan thermal insulation strip 2012 and a second fixed fan profile 2013. In this embodiment, the first door frame profile 1011 and the second door frame profile 1012 in the first vertical door frame 101 are connected by a first door frame thermal insulation strip 1014, and the first fixed fan profile 2011 and the second fixed fan profile 2013 in the first fixed fan column 201 are connected by a first fixed fan thermal insulation strip 2012, which can isolate the thermal conductivity inside the metal, so that the thermal insulation effect of the first vertical door frame 101 and the first fixed fan column 201 is good.

[0036] Preferably, the first anti-swing structure 5 includes a first anti-swing member 501 arranged in the first flat groove and a second anti-swing member 502 arranged on the second fixed fan profile 2013, the first anti-swing member 501 abuts against the second fixed fan profile 2013, and the second anti-swing member 502 abuts against the second door frame profile 1012; the second anti-swing structure 6 includes a third anti-swing member 601 arranged in the second flat groove and a fourth anti-swing member 602 arranged on the first fixed fan profile 2011, the third anti-swing member 601 abuts against the first fixed fan profile 2011, and the fourth anti-swing member 602 abuts against the third door frame profile 1013. In this embodiment, under normal conditions, the end of the first fixed sash profile 2011 extends into the second flat slot, and the gap between the first fixed sash profile 2011 and the third door frame profile 1013 is filled by the third anti-swing piece 601 and the fourth anti-swing piece 602. At the same time, the end of the second fixed sash profile 2013 extends into the first flat slot, and the gap between the second fixed sash profile 2013 and the second door frame profile 1012 is filled by the first anti-swing piece 501 and the second anti-swing piece 502. The connection stability is good, and the fixed sash 2 is effectively prevented from swinging left and right at the first vertical door frame 101, which can improve the safety of use. In other embodiments, the first anti-swing piece 501, the first anti-swing piece 501, the third anti-swing piece 601 and the fourth anti-swing piece 602 can also be replaced with sealing strips or brush strips according to customer needs, and are not limited to this embodiment.

[0037] like Figure 4 As shown, preferably, the second fixed fan column 203 includes a third fixed fan profile 2031, a second fixed fan insulation strip 2032 and a fourth fixed fan profile 2033, the third fixed fan profile 2031 is formed with a third flat groove, the third flat groove is provided with a third anti-collision block 15, the fourth fixed fan profile 2033 is formed with a fourth flat groove, the fourth flat groove is provided with a fourth anti-collision block 16; the first movable fan 3 includes a first movable fan column A301, a second glass 302 and a first movable fan column B303, the first movable fan column A301 includes a first movable fan profile 3011, a first movable fan insulation strip 3012 and a second movable fan profile 3013. In this embodiment, when the first movable fan 3 moves toward the fixed fan 2 to close, the end of the first movable fan profile 3011 will extend into the third flat slot and abut against the third anti-collision block 15, and the end of the second movable fan profile 3013 will extend into the fourth flat slot and abut against the fourth anti-collision block 16, thereby avoiding impact damage caused by closing too quickly, which is beneficial to improving the service life.

[0038] Preferably, the third anti-swing structure 7 includes a fifth anti-swing piece 701 disposed on the second movable fan profile 3013, and the fifth anti-swing piece 701 abuts against the fourth fixed fan profile 2033; the fourth anti-swing structure 8 includes a sixth anti-swing piece 801 disposed on the first movable fan profile 3011, and the sixth anti-swing piece 801 abuts against the third fixed fan profile 2031. In this embodiment, when the first movable fan 3 is closed, the gap between the second movable fan profile 3013 and the fourth fixed fan profile 2033 is filled by the fifth anti-swing piece 701, and the gap between the first movable fan profile 3011 and the third fixed fan profile 2031 is filled by the sixth anti-swing piece 801, which can effectively improve the connection stability between the first movable fan 3 and the fixed fan 2, prevent the first movable fan 3 from swinging out under the action of external force, and improve the safety of use. In other embodiments, the fifth anti-swing piece 701 and the sixth anti-swing piece 801 can also be replaced with sealing strips or brush strips according to customer needs, and are not limited to this embodiment.

[0039] like Figure 5 As shown, preferably, the first movable fan column B 303 includes a third movable fan profile 3031, a second movable fan heat insulation strip 3032 and a fourth movable fan profile 3033, and a first extending protrusion 3034 is provided on the side of the third movable fan profile 3031 away from the fourth movable fan profile 3033; the second movable fan 4 includes a second movable fan column A 401, a third glass 402 and a second movable fan column B 403, and the second movable fan column B 403 includes a fifth movable fan profile 4031, a third movable fan heat insulation strip 4032 and a sixth movable fan profile 4033, and a second extending protrusion 4034 is provided on the side of the sixth movable fan profile 4033 away from the fifth movable fan profile 4031.

[0040] Preferably, the fifth anti-sway structure 9 includes a seventh anti-sway member 901 arranged on the first extension protrusion 3034 and an eighth anti-sway member 902 arranged on the second extension protrusion 4034, the seventh anti-sway member 901 abuts against the sixth movable fan profile 4033, and the eighth anti-sway member 902 abuts against the fourth movable fan profile 3033; the first sealing structure 10 includes a first sealing strip 1001 arranged on the first extension protrusion 3034 and a second sealing strip 1002 arranged on the second extension protrusion 4034, and the first sealing strip 1001 abuts against the second sealing strip 1002. In this embodiment, when the first movable fan 3 and the second movable fan 4 are closed, the positions of the first movable fan column B 303 and the second movable fan column B 403 overlap, the seventh anti-swing member 901 fills the gap between the first extension protrusion 3034 and the sixth movable fan profile 4033, and the eighth anti-swing member 902 fills the gap between the second extension protrusion 4034 and the third movable fan profile 3031, preventing the first movable fan 3 and the second movable fan 4 from swinging out under the action of external force. At the same time, the first sealing strip 1001 on the first extension protrusion 3034 will abut against the second sealing strip 1002 on the second extension protrusion 4034, which can effectively improve the sealing between the first movable fan 3 and the second movable fan 4 and prevent rainwater or mosquitoes from entering the room from the outside.

[0041] like Figure 6 As shown, preferably, the second movable fan column A 401 includes a seventh movable fan profile 4011, a fourth movable fan insulation strip 4012 and an eighth movable fan profile 4013; the second vertical door frame 102 includes a fourth door frame profile 1021, a fifth door frame profile 1022, a sixth door frame profile 1023 and a second door frame insulation strip 1024, the sixth door frame profile 1023 and the second door frame insulation strip 1024 are connected between the fourth door frame profile 1021 and the fifth door frame profile 1022, the sixth door frame profile 1023 is formed with a fifth flat groove, the fifth flat groove is provided with a fifth anti-collision block 17, the fifth door frame profile 1022 is formed with a sixth flat groove, the sixth flat groove is provided with a sixth anti-collision block 18. In this embodiment, when the second movable fan 4 moves toward the second vertical door frame 102 and closes, the seventh movable fan profile 4011 extends into the sixth flat groove and abuts against the sixth anti-collision block 18, and the eighth movable fan profile 4013 extends into the fifth flat groove and abuts against the fifth anti-collision block 17 to avoid impact damage.

[0042] Preferably, the sixth anti-swing structure 11 includes a ninth anti-swing piece 1101 arranged in the fifth flat groove and a tenth anti-swing piece 1102 arranged on the eighth movable fan profile 4013, the ninth anti-swing piece 1101 abuts against the eighth movable fan profile 4013, and the tenth anti-swing piece 1102 abuts against the sixth door frame profile 1023; the seventh anti-swing structure 12 includes an eleventh anti-swing piece 1201 arranged in the sixth flat groove and a twelfth anti-swing piece 1202 arranged on the seventh movable fan profile 4011, the eleventh anti-swing piece 1201 abuts against the seventh movable fan profile 4011, and the twelfth anti-swing piece 1202 abuts against the fifth door frame profile 1022. In this embodiment, when the second movable leaf 4 is closed, the gap between the seventh movable leaf profile 4011 and the fifth door frame profile 1022 is filled by the eleventh anti-swing piece 1201 and the twelfth anti-swing piece 1202, and the gap between the eighth movable leaf profile 4013 and the sixth door frame profile 1023 is filled by the ninth anti-swing piece 1101 and the tenth anti-swing piece 1102, so that the connection stability is good and the use safety can be improved. In other embodiments, the ninth anti-swing piece 1101, the tenth anti-swing piece 1102, the eleventh anti-swing piece 1201 and the twelfth anti-swing piece 1202 can also be replaced with sealing strips or brush strips according to customer needs, and are not limited to this embodiment.

[0043] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A heavy-duty sliding door, comprising a door frame (1), wherein a fixed leaf (2), a first movable leaf (3) and a second movable leaf (4) are arranged in the door frame (1), characterized in that: The door frame (1) comprises a first vertical door frame (101) and a second vertical door frame (102); a first anti-swing structure (5) and a second anti-swing structure (6) are provided between the fixed leaf (2) and the first vertical door frame (101); a third anti-swing structure (7) and a fourth anti-swing structure (8) are provided between the first movable leaf (3) and the fixed leaf (2); a fifth anti-swing structure (9) and a first sealing structure (10) are provided between the second movable leaf (4) and the first movable leaf (3); and a sixth anti-swing structure (11) and a seventh anti-swing structure (12) are provided between the second movable leaf (4) and the second vertical door frame (102).

2. The heavy-duty sliding door according to claim 1, characterized in that: The first vertical door frame (101) comprises a first door frame profile (1011), a second door frame profile (1012), a third door frame profile (1013) and a first door frame heat insulation strip (1014); the third door frame profile (1013) and the first door frame heat insulation strip (1014) are connected between the first door frame profile (1011) and the second door frame profile (1012); a first flat groove is formed on the second door frame profile (1012), a first anti-collision block (13) is arranged in the first flat groove; a second flat groove is formed on the third door frame profile (1013), a second anti-collision block (14) is arranged in the second flat groove; The fixed fan (2) comprises a first fixed fan column (201), a first glass (202) and a second fixed fan column (203); the first fixed fan column (201) comprises a first fixed fan profile (2011), a first fixed fan heat insulation strip (2012) and a second fixed fan profile (2013).

3. The heavy-duty sliding door according to claim 2, characterized in that: The first anti-sway structure (5) comprises a first anti-sway component (501) arranged in the first flat groove and a second anti-sway component (502) arranged on the second fixed sash profile (2013), the first anti-sway component (501) abutting against the second fixed sash profile (2013), and the second anti-sway component (502) abutting against the second door frame profile (1012); The second anti-sway structure (6) comprises a third anti-sway component (601) arranged in the second flat groove and a fourth anti-sway component (602) arranged on the first fixed sash profile (2011), the third anti-sway component (601) abutting against the first fixed sash profile (2011), and the fourth anti-sway component (602) abutting against the third door frame profile (1013).

4. The heavy-duty sliding door according to claim 3, characterized in that: The second fixed fan column (203) comprises a third fixed fan profile (2031), a second fixed fan heat insulation strip (2032) and a fourth fixed fan profile (2033); the third fixed fan profile (2031) is formed with a third flat groove, in which a third anti-collision block (15) is arranged; the fourth fixed fan profile (2033) is formed with a fourth flat groove, in which a fourth anti-collision block (16) is arranged; The first movable fan (3) comprises a first movable fan column A (301), a second glass (302) and a first movable fan column B (303); the first movable fan column A (301) comprises a first movable fan profile (3011), a first movable fan heat insulation strip (3012) and a second movable fan profile (3013).

5. The heavy-duty sliding door according to claim 4, characterized in that: The third anti-sway structure (7) comprises a fifth anti-sway component (701) arranged on the second movable fan profile (3013), and the fifth anti-sway component (701) abuts against the fourth fixed fan profile (2033); The fourth anti-sway structure (8) comprises a sixth anti-sway component (801) arranged on the first movable sash profile (3011), and the sixth anti-sway component (801) abuts against the third fixed sash profile (2031).

6. The heavy-duty sliding door according to claim 5, characterized in that: The first movable fan column B (303) comprises a third movable fan profile (3031), a second movable fan heat insulation strip (3032) and a fourth movable fan profile (3033); a first extending protrusion (3034) is provided on a side of the third movable fan profile (3031) away from the fourth movable fan profile (3033); The second movable fan (4) comprises a second movable fan column A (401), a third glass (402) and a second movable fan column B (403); the second movable fan column B (403) comprises a fifth movable fan profile (4031), a third movable fan heat insulation strip (4032) and a sixth movable fan profile (4033); a second extending protrusion (4034) is provided on a side of the sixth movable fan profile (4033) away from the fifth movable fan profile (4031).

7. The heavy-duty sliding door according to claim 6, characterized in that: The fifth anti-sway structure (9) comprises a seventh anti-sway component (901) arranged on the first extending protrusion (3034) and an eighth anti-sway component (902) arranged on the second extending protrusion (4034), the seventh anti-sway component (901) abutting against the sixth movable fan profile (4033), and the eighth anti-sway component (902) abutting against the fourth movable fan profile (3033); The first sealing structure (10) comprises a first sealing strip (1001) arranged on the first extending protrusion (3034) and a second sealing strip (1002) arranged on the second extending protrusion (4034), the first sealing strip (1001) abutting against the second sealing strip (1002).

8. The heavy-duty sliding door according to claim 7, characterized in that: The second movable fan column A (401) comprises a seventh movable fan profile (4011), a fourth movable fan heat insulation strip (4012) and an eighth movable fan profile (4013); The second vertical door frame (102) comprises a fourth door frame profile (1021), a fifth door frame profile (1022), a sixth door frame profile (1023) and a second door frame heat insulation strip (1024); the sixth door frame profile (1023) and the second door frame heat insulation strip (1024) are connected between the fourth door frame profile (1021) and the fifth door frame profile (1022); a fifth flat groove is formed on the sixth door frame profile (1023), a fifth anti-collision block (17) is arranged in the fifth flat groove; a sixth flat groove is formed on the fifth door frame profile (1022), a sixth anti-collision block (18) is arranged in the sixth flat groove.

9. The heavy sliding door according to claim 8, characterized in that: The sixth anti-sway structure (11) comprises a ninth anti-sway component (1101) arranged in the fifth flat groove and a tenth anti-sway component (1102) arranged on the eighth movable sash profile (4013), the ninth anti-sway component (1101) abutting against the eighth movable sash profile (4013), and the tenth anti-sway component (1102) abutting against the sixth door frame profile (1023); The seventh anti-sway structure (12) comprises an eleventh anti-sway component (1201) arranged in the sixth flat groove and a twelfth anti-sway component (1202) arranged on the seventh movable fan profile (4011), the eleventh anti-sway component (1201) abuts against the seventh movable fan profile (4011), and the twelfth anti-sway component (1202) abuts against the fifth door frame profile (1022).

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