A heavy-duty automatic door using a linear bearing track

Abstract

The present invention relates to the technical field of axially movable doors and windows, and specifically to a heavy-duty automatic door using a linear bearing track. The automatic door comprises a heavy-duty door, a moving mechanism, a supporting mechanism and an adjusting mechanism. An operator first starts the moving mechanism to move the heavy-duty door, and then uses rolling and replacement of rolling columns in the supporting mechanism to achieve rapid movement of the heavy-duty door. When it is necessary to stop, the adjusting mechanism is used to change the center of gravity of the heavy-duty door to achieve rapid stagnation. The device has a simple structure, effectively solves the inertia problem of rapid movement of heavy-duty doors using linear bearings and stagnation after movement, avoids damage to the mobile equipment, has good practicality and economy, and is beneficial to the promotion and use of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of axially movable doors and windows, and in particular to a heavy automatic door using a linear bearing track. Background Art

[0002] In actual applications of heavy-duty automatic doors, they often move slowly. However, in some scenarios, such as smoke and fire prevention, heavy-duty doors need to close and stop quickly. Their large mass requires great driving power. The huge inertia of the rapid movement of heavy-duty doors can easily cause damage to the driving equipment, and the stagnant position cannot be controlled. At the same time, heavy-duty automatic doors usually need to be moved by pulleys. Their high mass can easily affect the pulley bearings and supporting parts, and long-term stagnation can easily damage the pulley.

[0003] Linear bearings are widely used in high-precision equipment such as machine tools. They move quickly and with high accuracy, but have poor load capacity. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention aims to provide a heavy-duty automatic door using a linear bearing track, which can realize the rapid movement and rapid stop of the heavy-duty automatic door.

[0005] The technical solution adopted by the present invention is: a heavy-duty automatic door using a linear bearing track, comprising

[0006] A heavy-duty door, wherein a moving mechanism is provided above the heavy-duty door for driving the heavy-duty door to move, wherein the heavy-duty door comprises a door frame, wherein the door frame presents a rectangular box structure, wherein a door body is provided inside the door frame, and a buried groove for guiding movement is provided below the door body;

[0007] A supporting mechanism, the supporting mechanism includes a blocking block, the blocking block is arranged between the door body and the buried groove, a fixing column is provided in the middle of the side of the blocking block, the fixing column is fixedly connected to the inner cavity of the opening end of the door frame, the gap between the blocking block and the door body is a movable path, a plurality of rolling columns placed in abutment with the sides are provided in the movable path, pushing rods are provided at both ends of the rolling columns, a plurality of rolling columns are also provided on the side of the blocking block away from the door body, the spacing between adjacent rolling columns away from the door body is equal, and lifting members are provided between the two ends of the blocking block and the door frame to lift the rolling columns and place them between the door body and the blocking block.

[0008] In one embodiment, the buried groove presents a C-shaped structure, two groups of guide ribs are provided on the concave side of the buried groove, and the rolling column of the blocking block away from the side of the door body is placed between the two groups of guide ribs.

[0009] In one embodiment, the moving mechanism includes two groups of protection rails, which are L-shaped structures. The two groups of protection rails are arranged on both sides of the door frame away from the buried groove. The protection rails are provided with guide slide bars, and the axial direction of the guide slide bars is the same as the movement direction of the heavy door. The door frame is provided with a connecting block, and the connecting block is provided with two groups of linear bearings. The linear bearings pass through and are slidably connected to the adjacent guide slide bars. The door frame is provided with a plurality of connecting brackets, and the connecting brackets are provided with friction electric rollers, and the friction electric rollers abut the opposite sides of the two groups of protection rails.

[0010] In one embodiment, the lifting member includes a column plate, which has a bent plate structure. The inner recess of the column plate faces the blocking block. A connecting hinge is provided in the middle of one bent edge of the column plate. The connecting hinge connects the column plate and the inner cavity of the door frame. A thrust spring is also provided between the column plate and the inner cavity of the door frame.

[0011] In one embodiment, the bending angle of the pillar-resisting plate is an obtuse angle, and the end of the bent edge of the pillar-resisting plate where the connecting hinge is not provided is close to the buried groove.

[0012] In one embodiment, a second movable track is formed between the pillar plate and the barrier block, and a plurality of rolling pillars are disposed in the second movable track.

[0013] In one embodiment, after the rolling column placed in the buried groove passes into the active track 2, the rolling column in the active track 2 flows into the active track 1, and then the rolling column in the active track 1 squeezes another rolling column in the active track 2 and is placed in the buried groove.

[0014] In one embodiment, the lifting member also includes a plurality of auxiliary mechanisms, which are used to push the plurality of rolling columns in the movable track to move. The auxiliary mechanisms include a plurality of arc-shaped push plates, which are placed on both sides of the blocking block. A lifting block is provided in the middle of the arc-shaped push plate, and a lifting groove is provided in the middle of the lifting block. A sliding column is provided in the lifting groove, and the sliding column is fixedly connected to the blocking block. Touch lifting rods are also provided on both sides of the lifting block, and the touch lifting rods are attached to and slidably connected to the blocking block. A movable block is provided at one end of the touch lifting rod close to the buried groove, and the movable block is placed below a side of the blocking block away from the moving mechanism. A movable groove is provided on the blocking block close to the movable block. When the rolling column squeezes the movable block into the movable groove, the touch lifting rod pushes the arc-shaped push plate to move.

[0015] In one embodiment, the door body is also provided with an adjustment mechanism, and the adjustment mechanism includes a swinging counterweight block, a circular groove is provided in the middle of the door body, the swinging counterweight block is placed in the circular groove, a rotating column fixedly connected to the swinging counterweight block is provided at the center of the circular groove, a swing column is provided at the edge of the swinging counterweight block away from the rotating column, a fulcrum column is provided at one end of the door body close to the supporting mechanism, a swing plate is provided on the fulcrum column, a straight groove is provided in the middle of the swing plate, the swing column passes through and is slidably connected to the straight groove, an arc groove is provided on the swing plate, the rotating column passes through and is slidably connected to the arc groove, and the rotating column passes through and is rotatably connected to the door frame.

[0016] In one embodiment, a driving motor is provided on the door frame, and the driving motor drives the rotating column to rotate.

[0017] The beneficial effects of the present invention are as follows: the present invention is a heavy-duty automatic door using a linear bearing track to achieve rapid movement and rapid stagnation of a heavy-duty automatic door, and the specific implementation method is shown below:

[0018] The operator first starts the friction electric roller friction protection rail to drive the heavy door to move. While the heavy door moves, the rolling column between the blocking block and the buried groove rolls. Since the main body of the heavy door and the buried groove are supported and transmitted by the rolling column, when the rolling column rolls one circle, the heavy door moves two times the rolling column, which has good transmission characteristics and supporting performance, and effectively reduces the power required for the movement of the heavy door, and realizes rapid movement;

[0019] Since the rolling column is in contact with the blocking block on the heavy door, it is necessary to replenish and recycle the rolling column under the blocking block in time. During the movement of the rolling column, the rolling column close to the column plate pushes the column plate to squeeze the thrust spring, so that the column plate rotates along the connection direction of the hinge. At the same time, the rolling column located in the middle of the blocking block and the buried groove squeezes the first group of touch lifting rods to slide upward, so that the lifting block is inclined upward due to the guiding effect of the sliding column on the lifting groove, and after driving the arc push plate to tilt upward, it abuts the push rod and continues to squeeze the second group of touch lifting rods to rise, so that the arc push plate remains horizontal, and the following two effects occur at the same time:

[0020] First, in the process of the arc-shaped push plate rising and keeping horizontal, the abutted rolling column is pried by the second set of touch lifting rods, so that the push rod on the rolling column located on the movable track 1 is pushed by the arc-shaped push plate to move in the opposite direction of the moving direction of the heavy door, so that the other lifting member is squeezed by the rolling column in the movable track 1 to push the rolling column therein out and place it between the blocking block and the buried groove, completing the supplement of the rolling column between the blocking block and the buried groove;

[0021] Second, after a group of rolling columns is missing from the movable track one, an additional group of rolling columns is added between the column plate and the blocking block on the lifting member in the moving direction. The additional group of rolling columns squeezes the original rolling columns and passes into the movable track one. The rolling columns in the movable track one squeeze the arc-shaped push plate and move downward, waiting for the next group of rolling columns to squeeze and touch the lifting rod to rise.

[0022] Through the above-mentioned implementation, the extraction and replenishment of the rolling column between the blocking block and the buried groove is realized, thereby effectively reducing the power required for moving the heavy door and achieving rapid movement;

[0023] When it is necessary to stop, the power transmission of the friction electric roller is suspended, and the heavy door slides due to inertia. At the same time, the drive motor is started to rotate the swing counterweight in the opposite direction of the moving direction of the heavy door. The swing counterweight drives the swing column to slide in the linear groove on the swing plate, and at the same time, the swing plate on the fulcrum column is rotated to change the center of gravity of the heavy door. Since the heavy door and the buried groove are mainly transmitted by the active rolling column, when the heavy door loses kinetic energy, the rolling column relies on the inertia of the heavy door. After the heavy door changes its center of gravity instantly, the direction of its inertial force changes, and the rolling resistance is quickly lost, thereby achieving rapid stoppage. At the same time, since the rolling column is made of solid and hard material, its strength is much higher than the support structure of the pulley and will not cause damage. The high-quality performance of the linear bearing is effectively utilized, and the stop function can be achieved without the linear bearing causing a strong load.

[0024] The device has a simple structure, effectively utilizes the change of center of gravity and the rolling effect of the rolling column, and cooperates with the high-quality performance of the linear bearing to achieve rapid movement and braking of heavy doors. It has good stability and practicality, and is beneficial to the promotion and use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the moving mechanism part of the present invention;

[0029] Figure 4 It is a schematic diagram of a three-dimensional structure of a portion of the support mechanism of the present invention;

[0030] Figure 5 It is a second partial three-dimensional structural schematic diagram of the support mechanism of the present invention;

[0031] Figure 6It is a third partial three-dimensional structural schematic diagram of the support mechanism of the present invention;

[0032] Figure 7 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention;

[0033] Figure 8 It is the second three-dimensional structural schematic diagram of the adjustment mechanism of the present invention.

[0034] Description of the drawings: 1. Heavy-duty door; 11. Door frame; 12. Friction electric roller; 121. Connecting bracket; 13. Door body; 131. Circular groove; 2. Moving mechanism; 21. Protection rail; 22. Guide slide bar; 23. Linear bearing; 231. Connecting block; 3. Support mechanism; 31. Buried groove; 311. Guide rib; 32. Blocking block; 321. Fixed column; 322. Movable groove; 33. Rolling column; 331 , push rod; 34, column plate; 35, thrust spring; 36, connecting hinge; 37, arc-shaped push plate; 371, lifting block; 372, lifting slot; 373, sliding column; 38, touch lifting rod; 381, movable block; 4, adjustment mechanism; 41, driving motor; 411, rotating column; 412, swing counterweight block; 413, swing column; 414, fulcrum column; 42, swing plate; 421, arc-shaped slot; 422, straight slot. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0037] Combine the following Figure 1-8 The specific embodiment of the present invention is described, a heavy automatic door with a linear bearing track, comprising

[0038] A heavy-duty door 1 is provided with a moving mechanism 2 above the heavy-duty door 1 for driving the heavy-duty door 1 to move. The moving mechanism 2 includes two sets of protection rails 21. The protection rails 21 present an L-shaped structure. The two sets of protection rails 21 are arranged on both sides of the door frame 11 away from the buried groove 31. A guide slide bar 22 is arranged on the protection rail 21. The axial direction of the guide slide bar 22 is the same as the movement direction of the heavy-duty door 1. A connecting block 231 is provided on the door frame 11. Two sets of linear bearings 23 are provided on the connecting block 231. The linear bearings 23 are passed through and slidably connected to the adjacent The guide slide bar 22, the door frame 11 is provided with a plurality of connecting brackets 121, the specific number of which is determined by referring to the actual number used, the connecting bracket 121 is provided with a friction electric roller 12, the friction electric roller 12 abuts against the opposite sides of the two sets of protection rails 21, the heavy door 1 includes a door frame 11, the door frame 11 presents a rectangular box structure, a door body 13 is provided in the door frame 11, and a motion-guided buried groove 31 is provided under the door body 13, specifically, the buried groove 31 mainly plays a supporting role, which is a prior art, so it will not be repeated;

[0039] The support mechanism 3 includes a blocking block 32, which is arranged between the door body 13 and the buried groove 31. A fixed column 321 is provided in the middle of the side of the blocking block 32, and the fixed column 321 is fixedly connected to the inner cavity of the open end of the door frame 11. The gap between the blocking block 32 and the door body 13 is a movable path 1, and a plurality of rolling columns 33 placed in abutment with the side are provided in the movable path 1. Push rods 331 are provided at both ends of the rolling columns 33. A plurality of rolling columns 33 are also provided on the side of the blocking block 32 away from the door body 13. The adjacent rolling columns 33 away from the door body 13 are at equal distances. Lifting members are provided between the two ends of the blocking block 32 and the door frame 11 to lift the rolling columns 33 and place them between the door body 13 and the blocking block 32. The lifting members include a column plate 34, and the column plate 34 presents The bending plate type structure has an obtuse bending angle of the column plate 34. The end of the bending edge of the column plate 34 without a connecting hinge 36 is close to the buried groove 31, and the inner concave part of the column plate 34 faces the blocking block 32. A connecting hinge 36 is provided in the middle of one bending edge of the column plate 34. The connecting hinge 36 connects the column plate 34 and the inner cavity of the door frame 11. A thrust spring 35 is also provided between the column plate 34 and the inner cavity of the door frame 11. Furthermore, there is a movable track 2 between the column plate 34 and the blocking block 32, and a plurality of rolling columns 33 are provided in the movable track 2. Advantageously, after the rolling columns 33 placed in the buried groove 31 pass into the movable track 2, the rolling columns 33 in the movable track 2 flow into the movable track 1, and then the rolling columns 33 in the movable track 1 squeeze the rolling columns 33 in the other movable track 2 and place them in the buried groove 31.

[0040] Advantageously, the buried groove 31 presents a C-shaped structure, two sets of guide ribs 311 are provided on the concave side of the buried groove 31 , and the rolling column 33 on the side of the blocking block 32 away from the door body 13 is placed between the two sets of guide ribs 311 .

[0041] In practice, the main body of the heavy door 1 and the buried groove 31 are supported and transmitted through the rolling column 33. When the rolling column 33 rolls one circle, the heavy door 1 moves two circles of the rolling column 33, which has good transmission characteristics and supporting performance, and effectively reduces the power required for the movement of the heavy door 1.

[0042] Advantageously, the lifting member further comprises a plurality of auxiliary mechanisms, which are used to push a plurality of rolling columns 33 in the movable track to move. The auxiliary mechanisms comprise a plurality of arc-shaped push plates 37, which are placed on both sides of the blocking block 32. A lifting block 371 is provided in the middle of the arc-shaped push plate 37, a lifting groove 372 is provided in the middle of the lifting block 371, a sliding column 373 is provided in the lifting groove 372, and the sliding column 373 is fixedly connected to the blocking block 32. Touch lifting rods 38 are further provided on both sides of the lifting block 371, and the touch lifting rods 38 are attached to and slidably connected to the blocking block 32. A movable block 381 is provided at one end of the touch lifting rod 38 close to the buried groove 31. The movable block 381 is placed below a side of the blocking block 32 away from the moving mechanism 2, and a movable groove 322 is provided on the blocking block 32 close to the movable block 381. When the rolling column 33 squeezes the movable block 381 and passes into the movable groove 322, the touch lifting rod 38 pushes the arc-shaped push plate 37 to move.

[0043] Advantageously, the door body 13 is also provided with an adjustment mechanism 4, which includes a swinging counterweight 412, a circular groove 131 is provided in the middle of the door body 13, the swinging counterweight 412 is placed in the circular groove 131, a rotating column 411 fixedly connected to the swinging counterweight 412 is provided at the center of the circular groove 131, a swinging column 413 is provided at the edge of the swinging counterweight 412 away from the rotating column 411, a fulcrum column 414 is provided at one end of the door body 13 close to the supporting mechanism 3, a swing plate 42 is provided on the fulcrum column 414, the swing plate 42 is made of heavy material, a straight groove 422 is provided in the middle of the swing plate 42, the swing column 413 passes through and is slidably connected to the straight groove 422, an arc groove 421 is provided on the swing plate 42, the rotating column 411 passes through and is slidably connected to the arc groove 421, the rotating column 411 passes through and is rotatably connected to the door frame 11, and advantageously, a drive motor 41 is provided on the door frame 11, and the drive motor 41 drives the rotating column 411 to rotate.

[0044] In practice, when it is necessary to stop, the power transmission of the friction electric roller 12 is suspended, and the heavy door 1 slides due to inertia. At the same time, the driving motor 41 is started to rotate the swing counterweight 412 in the opposite direction of the moving direction of the heavy door 1. The swing counterweight 412 drives the swing column 413 to slide in the straight groove 422 on the swing plate 42, and at the same time, the swing plate 42 on the fulcrum column 414 is rotated, so that the center of gravity of the heavy door 1 changes. Since the heavy door 1 and the buried groove 31 are mainly transmitted by the movable rolling column 33, when the heavy door 1 loses kinetic energy, the rolling column 33 relies on the inertia of the heavy door 1. After the heavy door 1 changes its center of gravity instantly, the direction of its inertial force changes, and the rolling resistance is quickly lost, thereby achieving rapid stop.

[0045] Working principle of the present invention:

[0046] The operator first starts the friction electric roller 12 to rub the protection rail 21 to drive the heavy door 1 to move. When the heavy door 1 moves, the rolling column 33 between the blocking block 32 and the buried groove 31 rolls. Since the main body of the heavy door 1 and the buried groove 31 are supported and transmitted by the rolling column 33, when the rolling column 33 rolls one circle, the heavy door 1 moves two circles of the rolling column 33, which has good transmission characteristics and supporting performance, and effectively reduces the power required for the movement of the heavy door 1, and realizes rapid movement;

[0047] Since the rolling column 33 is in contact with the blocking block 32 on the heavy door 1, it is necessary to replenish and recycle the rolling column 33 under the blocking block 32 in time. During the movement of the rolling column 33, the rolling column 33 close to the column plate 34 pushes the column plate 34 to squeeze the thrust spring 35, so that the column plate 34 rotates along the connection direction of the connecting hinge 36. At the same time, the rolling column 33 located in the middle of the blocking block 32 and the buried groove 31 first squeezes the movable block 381 on the first group of adjacent touching lifting rods 38 to slide upward, so that the lifting block 371 is obliquely lifted by the sliding column 373. The guiding effect of the lowering groove 372 tilts upward and rises, driving the arc-shaped push plate 37 to tilt upward and abut against the push rod 331. At this time, the arc-shaped push plate 37 is tilted, and the top of the touch lifting rod 38 pushed by it slides to the two ends of the abutment surface of the arc-shaped push plate 37. Under the cooperation of the sliding column 373 and the lifting groove 372, an inclined T-shaped structure is formed, and the second group of touch lifting rods 38 are continuously squeezed to rise, so that the arc-shaped push plate 37 remains horizontal, and then the rolling column 33 transmitted by the motion direction squeezes the arc-shaped push plate 37 down. The specific implementation details are as follows:

[0048] First, in the process of the arc push plate 37 rising and keeping horizontal, the abutted rolling column 33 is pried by the second set of touch lifting rods 38, so that the inclined arc push plate 37 uses the connection position of the sliding column 373 as a fulcrum, and pries the abutted push rod 331 to slide to the arc surface edge of the arc push plate 37, similar to a simple seesaw structure, so that the push rod 331 on the rolling column 33 located on the movable track 1 is pushed by the arc push plate 37 to move in the opposite direction of the movement direction of the heavy door 1, so that the other lifting member is squeezed by the rolling column 33 in the movable track 1, and the rolling column 33 therein is pushed out and placed between the blocking block 32 and the buried groove 31, completing the supplement of the rolling column 33 between the blocking block 32 and the buried groove 31;

[0049] Second, after the first effect is completed, after the movable track 1 lacks a group of rolling columns 33, an additional group of rolling columns 33 is added between the column plate 34 and the blocking block 32 on the lifting member in the moving direction. The additional group of rolling columns 33 squeeze the original rolling columns 33 into the movable track 1, and the rolling columns 33 in the movable track 1 squeeze the arc-shaped push plate 37 to move downward, completing the resetting of the touch lifting rod 38, waiting for the next group of rolling columns 33 to squeeze the touch lifting rod 38 to rise.

[0050] Through the above-mentioned embodiment, the extraction and replenishment of the rolling column 33 between the blocking block 32 and the buried groove 31 are realized, thereby effectively reducing the power required for the movement of the heavy door 1 and achieving rapid movement;

[0051] When it is necessary to stop, the power transmission of the friction electric roller 12 is suspended, and the heavy door 1 slides due to inertia. At the same time, the drive motor 41 is started to rotate the swing counterweight 412 in the opposite direction of the moving direction of the heavy door 1. The swing counterweight 412 drives the swing column 413 to slide in the linear groove 422 on the swing plate 42, and at the same time, the swing plate 42 on the fulcrum column 414 is rotated, so that the center of gravity of the heavy door 1 changes. Since the heavy door 1 and the buried groove 31 are mainly transmitted by the active rolling column 33, when the heavy door 1 loses kinetic energy, the rolling column 33 relies on the inertia of the heavy door 1. After the heavy door 1 changes its center of gravity instantly, the direction of its inertial force changes, and the rolling resistance is quickly lost, thereby achieving rapid stoppage. At the same time, since the rolling column 33 is made of solid and hard material, its strength is much higher than the support structure of the pulley, and it will not cause damage. The high-quality performance of the linear bearing 23 is effectively utilized, and the stop function can be achieved without the linear bearing 23 causing a strong load.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A heavy-duty automatic door with a linear bearing (23) track, characterized in that: include A heavy-duty door (1), wherein a moving mechanism (2) is provided above the heavy-duty door (1) for driving the heavy-duty door (1) to move, wherein the heavy-duty door (1) comprises a door frame (11), wherein the door frame (11) presents a rectangular box structure, wherein a door body (13) is provided inside the door frame (11), and wherein a buried groove (31) for guiding movement is provided below the door body (13); The support mechanism (3) comprises a blocking block (32), the blocking block (32) being arranged between the door body (13) and the buried groove (31), a fixing column (321) being arranged in the middle of the side of the blocking block (32), the fixing column (321) being fixedly connected to the inner cavity of the opening end of the door frame (11), the gap between the blocking block (32) and the door body (13) forming a movable channel, the movable channel being provided with a plurality of side abutment placement A rolling column (33), push rods (331) are provided at both ends of the rolling column (33), a plurality of rolling columns (33) are also provided on the side of the blocking block (32) away from the door body (13), and the spacing between adjacent rolling columns (33) away from the door body (13) is equal, and lifting members are provided between the two ends of the blocking block (32) and the door frame (11) for lifting the rolling column (33) and placing it between the door body (13) and the blocking block (32); The lifting member includes a plurality of auxiliary mechanisms, and the auxiliary mechanisms are used to push the plurality of rolling columns (33) in the movable track to move. The auxiliary mechanisms include a plurality of arc-shaped push plates (37), and the arc-shaped push plates (37) are placed on both sides of the blocking block (32). A lifting block (371) is provided in the middle of the arc-shaped push plates (37), and a lifting groove (372) is provided in the middle of the lifting block (371). A sliding column (373) is provided in the lifting groove (372), and the sliding column (373) is fixedly connected to the blocking block (32). Touch plates are also provided on both sides of the lifting block (371). A touch lifting rod (38) is attached to and slidably connected to the blocking block (32); a movable block (381) is provided at one end of the touch lifting rod (38) close to the buried groove (31); the movable block (381) is placed below a side of the blocking block (32) away from the moving mechanism (2); a movable groove (322) is provided on the blocking block (32) close to the movable block (381); when the rolling column (33) squeezes the movable block (381) into the movable groove (322), the touch lifting rod (38) pushes the arc-shaped push plate (37) to move.

2. The heavy-duty automatic door with a linear bearing (23) track according to claim 1 is characterized in that: The buried groove (31) presents a C-shaped structure, and two groups of guide ribs (311) are provided on the concave side of the buried groove (31), and the rolling column (33) on the side of the blocking block (32) away from the door body (13) is placed between the two groups of guide ribs (311).

3. The heavy-duty automatic door with a linear bearing (23) track according to claim 1 is characterized in that: The moving mechanism (2) comprises two groups of protection rails (21), the protection rails (21) presenting an L-shaped structure, the two groups of protection rails (21) being arranged on both sides of the door frame (11) away from the buried groove (31), the protection rails (21) being provided with guide slide bars (22), the axial direction of the guide slide bars (22) being the same as the movement direction of the heavy door (1), the door frame (11) being provided with a connecting block (231), the connecting block (231) being provided with two groups of linear bearings (23), the linear bearings (23) being passed through and slidably connected to the adjacent guide slide bars (22), the door frame (11) being provided with a plurality of connecting brackets (121), the connecting brackets (121) being provided with friction electric rollers (12), the friction electric rollers (12) being in contact with opposite sides of the two groups of protection rails (21).

4. The heavy-duty automatic door with a linear bearing (23) track according to claim 3 is characterized in that: The lifting member includes a column plate (34), and the column plate (34) has a bent plate structure. The inner concave part of the column plate (34) faces the blocking block (32). A connecting hinge (36) is provided in the middle of one bent edge of the column plate (34). The connecting hinge (36) connects the column plate (34) and the inner cavity of the door frame (11). A thrust spring (35) is also provided between the column plate (34) and the inner cavity of the door frame (11).

5. The heavy-duty automatic door with a linear bearing (23) track according to claim 4 is characterized in that: The bending angle of the pillar-resisting plate (34) is an obtuse angle, and the bending edge end of the pillar-resisting plate (34) not provided with the connecting hinge (36) is close to the buried groove (31).

6. The heavy-duty automatic door with a linear bearing (23) track according to claim 4 is characterized in that: A second movable track is formed between the pillar-resisting plate (34) and the blocking block (32), and a plurality of rolling pillars (33) are arranged in the second movable track.

7. The heavy-duty automatic door with a linear bearing (23) track according to claim 6 is characterized in that: After the rolling column (33) placed in the buried groove (31) passes into the active track 2, the rolling column (33) in the active track 2 flows into the active track 1, and then the rolling column (33) in the active track 1 squeezes another rolling column (33) in the active track 2 and is placed in the buried groove (31).

8. The heavy-duty automatic door with a linear bearing (23) track according to claim 1 is characterized in that: The door body (13) is also provided with an adjustment mechanism (4), the adjustment mechanism (4) comprising a swing counterweight (412), a circular groove (131) is provided in the middle of the door body (13), the swing counterweight (412) is placed in the circular groove (131), a rotating column (411) fixedly connected to the swing counterweight (412) is provided at the center of the circular groove (131), a swing column (413) is provided at the edge of the swing counterweight (412) away from the rotating column (411), and the door body (1 3) A fulcrum column (414) is provided near one end of the support mechanism (3), a swing plate (42) is provided on the fulcrum column (414), a straight groove (422) is provided in the middle of the swing plate (42), the swing column (413) passes through and is slidably connected to the straight groove (422), an arc groove (421) is provided on the swing plate (42), the rotating column (411) passes through and is slidably connected to the arc groove (421), and the rotating column (411) passes through and is rotatably connected to the door frame (11).

9. The heavy-duty automatic door with a linear bearing (23) track according to claim 8, characterized in that: The door frame (11) is provided with a driving motor (41), and the driving motor (41) drives the rotating column (411) to rotate.

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