Rear-drive segmented door

Abstract

The utility model provides a rear drive subsection door which comprises a driving door row and a driven door row arranged in parallel, the driving door row comprises a first driving door row base, a second driving door row base, a driving bottom beam, a driving motor and a first transmission mechanism, one end of the driving bottom beam and the driving motor are connected to the first driving door row base, and the other end of the driving bottom beam is connected to the second driving door row base. The other end of the driving bottom beam is connected to the second driving door row base, the first transmission mechanism is arranged in the driving bottom beam, and the driving motor is in transmission connection with the first transmission mechanism; the driven door row comprises a driven door row base, a driven bottom beam, a second transmission mechanism, a fixing piece and a bearing limiting piece, the driven bottom beam is connected to the second driving door row base and the driven door row base, and the bearing limiting piece is connected to the second driving door row base and located in the driven bottom beam. A driving mode is changed into a rear driving mode, so that the inner structure of the door row does not need to be wired to a driving motor, the door row is not electrified, and the safety is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-door row drive, and particularly to a rear-drive segmented door. Background Art

[0002] At present, most companies and units use electric sliding doors as their main gates for employees and vehicles to pass through. For passages with a large span, electric sliding doors need to be structured with two or more door rows, and the opening and closing actions are achieved through the mutual drive of multiple door rows. In the existing multi-stage drive door row structure, a sprocket drive mechanism needs to be set between every two door rows to ensure the same driving speed of each door row, thus saving the time of opening and closing the door. However, this requires the installation of multiple sprocket drive mechanisms, which not only increases the installation cost of the entire multi-stage drive door row structure but also makes the entire multi-stage drive door row structure complex and cumbersome.

[0003] To solve the above technical problems, a patent document with the application number CN202323500085.3 in the prior art discloses a multi-stage drive door row structure. The driving end of the sprocket driver is connected to one of the sprockets inside the first lower crossbeam. The chain limiting plate is fixed to the chain inside the first lower crossbeam, and the chain limiting plate is arranged on the lower pulley connection assembly. The lower end of the vertical beam is connected to the lower pulley through the lower pulley connection assembly; the upper end of the vertical beam is connected to the upper pulley through the upper pulley connection assembly; chain limiting seats are installed at the bottoms of both the right door row mounting frame and the door row mounting frame. The chain limiting seat on the right door row mounting frame is fixed to the chain inside the second lower crossbeam, and the chain limiting seat on the door row mounting frame is used to drive the chain transmission inside the second lower crossbeam of the next second door row. The above technical solution solves the problem that in the existing multi-stage drive door row structure, multiple sprocket drive mechanisms need to be installed to achieve the synchronous drive of each door row, which not only increases the installation cost of the entire multi-stage drive door row structure but also makes the entire multi-stage drive door row structure complex and cumbersome.

[0004] However, the door row of the prior art is front-driven. This technical solution requires the powered door row to move first and drive other non-powered door rows to move, which will lead to the need to lay wires on the door row, resulting in a risk of the door row being electrified and thus causing safety problems. Summary of the Utility Model

[0005] Based on this, to solve the problem of potential safety hazards existing in the existing multi-stage drive door row, the utility model provides a rear-drive segmented door, and its specific technical solution is as follows:

[0006] A rear-driven sectional door, comprising a driving door row and a following door row arranged in parallel. The driving door row includes a first driving door row base, a second driving door row base, a driving bottom beam, a driving motor and a first transmission mechanism. One end of the driving bottom beam and the driving motor are connected to the first driving door row base, and the other end of the driving bottom beam is connected to the second driving door row base. The first transmission mechanism is arranged in the driving bottom beam, and the driving motor is in transmission connection with the first transmission mechanism;

[0007] The following door row includes a following door row base, a following bottom beam, a second transmission mechanism, a fixing member and a load-bearing limiting member. The following bottom beam is respectively connected to the second driving door row base and the following door row base. The load-bearing limiting member is connected to the second driving door row base and is located in the following bottom beam. The fixing member is connected to the following bottom beam and is fixedly connected to the first transmission mechanism. The second transmission mechanism is fixedly connected to the load-bearing limiting member.

[0008] For the above-mentioned rear-driven sectional door, by changing the driving mode to rear drive, the structure inside the door row does not need to route wires to the driving motor, and the door row is not charged, thus effectively increasing safety.

[0009] Preferably, there are multiple following door rows arranged in parallel in sequence. The following bottom beam of the first following door row is respectively connected to the second driving door row base and the following door row base. The load-bearing limiting member of the first following door row is connected to the second driving door row base and is located in the following bottom beam of the first following door row. The fixing member of the first following door row is connected to the following bottom beam of the first following door row and is fixedly connected to the first transmission mechanism. The second transmission mechanism of the first following door row is fixedly connected to the load-bearing limiting member of the first following door row;

[0010] For two adjacent following door rows, the following bottom beam of the following door row in the rear position is respectively connected to the following door row base of the following door row in the front position and the following door row base of the following door row in the rear position. The load-bearing limiting member of the following door row in the rear position is connected to the following door row base of the following door row in the front position and is located in the following bottom beam of the following door row in the rear position. The fixing member of the following door row in the rear position is connected to the following bottom beam of the following door row in the rear position and is fixedly connected to the second transmission mechanism of the following door row in the front position. The second transmission mechanism of the following door row in the rear position is fixedly connected to the load-bearing limiting member of the following door row in the rear position.

[0011] Preferably, the first transmission mechanism includes a drive converter, a first transmission tension adjusting member, and a first chain. The drive converter includes a transmission fixed seat, a driving fixed seat, a driving rotating shaft, a transmission wheel, and a driving sprocket. The transmission fixed seat and the fixed seat are arranged in parallel at intervals. The fixed seat is fixedly connected to the first active door row base. The driving fixed seat is connected to one end of the active bottom beam. The driving rotating shaft is rotatably connected to the transmission fixed seat and the fixed seat. The transmission wheel and the driving sprocket are fixedly connected to the driving rotating shaft. A driving wheel is connected to the output shaft of the driving motor, and the driving wheel is meshed with the transmission wheel;

[0012] The first transmission tension adjusting member includes a driven fixed seat, a driven rotating shaft, and a driven sprocket. The driven fixed seat is connected to the other end of the active bottom beam. The driven rotating shaft is rotatably connected to the driven fixed seat. The driven sprocket is fixedly connected to the driven rotating shaft. The first chain is respectively sleeved on the driving sprocket and the driven sprocket. The fixing member of the first driven door row is fixedly connected to the first chain.

[0013] Preferably, the second transmission mechanism includes a second transmission tension adjusting member, a third transmission tension adjusting member, and a second chain. Both the second transmission tension adjusting member and the third transmission tension adjusting member include a passive fixed seat, a passive rotating shaft, and a passive sprocket. The passive fixed seats of the second transmission tension adjusting member and the third transmission tension adjusting member are respectively connected to both ends of the driven bottom beam. The passive rotating shafts are respectively rotatably connected to the passive fixed seats in a one-to-one correspondence. The passive sprockets are respectively fixedly connected to the passive rotating shafts in a one-to-one correspondence. The second chain is respectively sleeved on the passive sprockets of the second transmission tension adjusting member and the third transmission tension adjusting member;

[0014] The second chain of the first driven door row in the front position is fixedly connected to the load-bearing limiting member of the first driven door row in the front position. The fixing member of the second driven door row in the rear position is fixedly connected to the second chain of the first driven door row in the front position.

[0015] Preferably, the load-bearing limiting member includes a load-bearing seat, a plurality of horizontal guide wheels and vertical guide wheels which are all rotatably connected to the load-bearing seat. The horizontal guide wheels and the vertical guide wheels are both abutted against the inner wall of the driven bottom beam. The second chain is fixedly connected to the load-bearing seat.

[0016] Preferably, both the active door row and the driven door row further include a first support column, a second support column and an upper beam. The upper beam of the active door row is arranged parallel to the upper side of the active bottom beam. The first support column and the second support column of the active door row are respectively vertically connected to both ends of the active bottom beam. The upper beam of the driven door row is arranged parallel to the upper side of the driven bottom beam. The first support column and the second support column of the driven door row are respectively vertically connected to both ends of the driven bottom beam.

[0017] Preferably, notch openings are formed on the side walls of both the active bottom beam and the driven bottom beam. A load-bearing wheel is rotatably connected to the support column of the driven bottom beam. The load-bearing wheel passes through the notch opening and respectively abuts against the inner walls of the active bottom beam and the driven bottom beam in a correspondingly adapted manner.

[0018] Preferably, a first gantry is connected to the second active door row base and is perpendicular to the active bottom beam. The first gantry is connected to the first support column. A second gantry is connected to the driven door row base and is perpendicular to the driven bottom beam. The second gantry is connected to the second support column.

[0019] Preferably, upper beam alignment wheels are connected to the bottom of the cross beam of the first gantry and the bottom of the cross beam of the second gantry. The upper beam alignment wheels are located between two adjacent upper beams and abut against the two adjacent upper beams.

[0020] Preferably, moving wheels are connected to the driven door row base.

[0021] Compared with the prior art, the beneficial effects of the present application are as follows:

[0022] 1. By changing the driving method to rear-wheel drive, the internal structure of the door row does not need to route wires to the active motor, and the door row is not electrified, thus effectively increasing safety.

[0023] 2. By setting load-bearing limit members, it is ensured that the driven door row does not deviate during movement. At the same time, the number of internal fittings of the entire bottom beam can be effectively reduced. While simplifying the structure, the installation is more convenient, the reliability of the door body is increased, and maintenance is facilitated.

[0024] 3. Through the drive converter, the angle of the transmission power can be changed according to actual needs, thereby simplifying the structure.

[0025] 4. By the combined use of the upper beam alignment wheels and the load-bearing wheels, the stability of the door row during movement is further improved. Description of the Drawings

[0026] The present utility model can be further understood from the following description in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but the emphasis is on showing the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0027] Figure 1 It is a schematic structural view of a rear - drive sectional door in an embodiment of the present utility model.

[0028] Figure 2 It is a schematic sectional view of a part of the structure of a rear - drive sectional door in an embodiment of the present utility model.

[0029] Figure 3 It is a schematic view of a part of the structure of a rear - drive sectional door in an embodiment of the present utility model.

[0030] Figure 4 It is Figure 2 an enlarged schematic view of part A in

[0031] Figure 5 It is Figure 3 an enlarged schematic view of part B in

[0032] Description of reference numerals:

[0033] 110, the base of the first active door row; 120, the base of the second active door row; 130, the active bottom beam; 140, the active motor; 151, the drive converter; 152, the first drive tension adjustment member; 153, the first chain; 210, the base of the driven door row; 220, the driven bottom beam; 231, the second drive tension adjustment member; 232, the third drive tension adjustment member; 233, the second chain; 240, the fixing member; 251, the load - bearing seat; 252, the horizontal guide wheel; 253, the vertical guide wheel; 310, the load - bearing wheel; 320, the upper beam alignment wheel. Detailed implementation manners

[0034] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation manners described herein are only used to explain the present utility model and do not limit the protection scope of the present utility model.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific implementation manners and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] Refer to Figure 1 、Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in Figure 5 , a rear - driven sectional door includes an active door row and a passive door row arranged in parallel. The active door row includes a first active door row base 110, a second active door row base 120, an active bottom beam 130, an active motor 140 and a first transmission mechanism. One end of the active bottom beam 130 and the active motor 140 are connected to the first active door row base 110, and the other end of the active bottom beam 130 is connected to the second active door row base 120. The first transmission mechanism is arranged in the active bottom beam 130, and the active motor 140 is in transmission connection with the first transmission mechanism;

[0037] The passive door row includes a passive door row base 210, a passive bottom beam 220, a second transmission mechanism, a fixing member 240 and a load - bearing limiting member. The passive bottom beam 220 is respectively connected to the second active door row base 120 and the passive door row base 210. The load - bearing limiting member is connected to the second active door row base 120 and is located in the passive bottom beam 220. The fixing member 240 is connected to the passive bottom beam 220 and is fixedly connected to the first transmission mechanism. The second transmission mechanism is fixedly connected to the load - bearing limiting member.

[0038] For the above - mentioned rear - driven sectional door, by changing the driving mode to rear - drive, the internal structure of the door row does not need to route wires to the active motor 140, and the door row is not electrified, thus effectively increasing safety.

[0039] In one preferred embodiment, there are multiple passive door rows arranged in parallel in sequence. The passive bottom beam 220 of the first - positioned passive door row is respectively connected to the second active door row base 120 and the passive door row base 210. The load - bearing limiting member of the first - positioned passive door row is connected to the second active door row base 120 and is located in the passive bottom beam 220 of the first - positioned passive door row. The fixing member 240 of the first - positioned passive door row is connected to the passive bottom beam 220 of the first - positioned passive door row and is fixedly connected to the first transmission mechanism. The second transmission mechanism of the first - positioned passive door row is fixedly connected to the load - bearing limiting member of the first - positioned passive door row;

[0040] For two adjacent driven door rows, the driven bottom beams 220 of the driven door row in the rear position are respectively connected to the driven door row bases 210 of the driven door row in the front position and the driven door row bases 210 of the driven door row in the rear position. The load-bearing limit members of the driven door row in the rear position are connected to the driven door row bases 210 of the driven door row in the front position and are located in the driven bottom beams 220 of the driven door row in the rear position. The fixing members 240 of the driven door row in the rear position are connected to the driven bottom beams 220 of the driven door row in the rear position and are fixedly connected to the second transmission mechanism of the driven door row in the front position. The second transmission mechanism of the driven door row in the rear position is fixedly connected to the load-bearing limit members of the driven door row in the rear position.

[0041] In one preferred embodiment, the first transmission mechanism includes a drive converter 151, a first transmission tension adjustment member 152, and a first chain 153. The drive converter 151 includes a transmission fixed seat, a driving fixed seat, a driving rotating shaft, a transmission wheel, and a driving sprocket. The transmission fixed seat and the fixed seat are arranged in parallel at intervals. The fixed seat is fixedly connected to the first driving door row base 110. The driving fixed seat is connected to one end of the driving bottom beam 130. The driving rotating shaft is rotatably connected to the transmission fixed seat and the fixed seat. The transmission wheel and the driving sprocket are fixedly connected to the driving rotating shaft. A driving wheel is connected to the output shaft of the driving motor 140, and the driving wheel is meshed with the transmission wheel.

[0042] The first transmission tension adjustment member 152 includes a driven fixed seat, a driven rotating shaft, and a driven sprocket. The driven fixed seat is connected to the other end of the driving bottom beam 130. The driven rotating shaft is rotatably connected to the driven fixed seat. The driven sprocket is fixedly connected to the driven rotating shaft. The first chain 153 is respectively sleeved on the driving sprocket and the driven sprocket. The fixing member 240 of the first driven door row is fixedly connected to the first chain 153.

[0043] In one preferred embodiment, the second transmission mechanism includes a second transmission tension adjustment member 231, a third transmission tension adjustment member 232, and a second chain 233. Both the second transmission tension adjustment member 231 and the third transmission tension adjustment member 232 include a passive fixed seat, a passive rotating shaft, and a passive sprocket. The passive fixed seats of the second transmission tension adjustment member 231 and the third transmission tension adjustment member 232 are respectively connected to both ends of the driven bottom beam 220. The passive rotating shafts are respectively rotatably connected to the passive fixed seats in one-to-one correspondence. The passive sprockets are respectively fixedly connected to the passive rotating shafts in one-to-one correspondence. The second chain 233 is respectively sleeved on the passive sprockets of the second transmission tension adjustment member 231 and the third transmission tension adjustment member 232.

[0044] The second chain 233 of the driven door row in the front position is fixedly connected to the load-bearing limit member of the driven door row in the front position, and the fixing member 240 of the driven door row in the rear position is fixedly connected to the second chain 233 of the driven door row in the front position.

[0045] In one preferred embodiment, the load-bearing limit member includes a load-bearing seat 251, a plurality of horizontal guide wheels 252 and vertical guide wheels 253 that are all rotatably connected to the load-bearing seat 251. The horizontal guide wheels 252 and the vertical guide wheels 253 are both in contact with the inner wall of the driven bottom beam 220, and the second chain 233 is fixedly connected to the load-bearing seat 251.

[0046] Specifically, the horizontal alignment wheels ensure that the driven bottom beam 220 does not deviate in the horizontal direction. The alignment wheels are used to bear the weight of the driven bottom beam 220 and various fittings connected to the driven bottom beam 220, and at the same time ensure smooth movement.

[0047] In one preferred embodiment, both the active door row and the driven door row further include a first support column, a second support column, and an upper beam. The upper beam of the active door row is parallelly arranged above the active bottom beam 130. The first support column and the second support column of the active door row are respectively vertically connected to both ends of the active bottom beam 130. The upper beam of the driven door row is parallelly arranged above the driven bottom beam 220. The first support column and the second support column of the driven door row are respectively vertically connected to both ends of the driven bottom beam 220.

[0048] In one preferred embodiment, notch openings are formed on the side walls of both the active bottom beam 130 and the driven bottom beam 220. A load-bearing wheel 310 is rotatably connected to the support column of the driven bottom beam 220. The load-bearing wheel 310 passes through the notch opening and is respectively in contact with the inner walls of the active bottom beam 130 and the driven bottom beam 220 in a correspondingly adapted manner.

[0049] In one preferred embodiment, a first gantry frame perpendicular to the active bottom beam 130 is connected to the second active door row base 120. The first gantry frame is connected to the first support column. A second gantry frame perpendicular to the driven bottom beam 220 is connected to the driven door row base 210. The second gantry frame is connected to the second support column.

[0050] In one preferred embodiment, upper beam alignment wheels 320 are connected to the bottom of the cross beam of the first gantry frame and the bottom of the cross beam of the second gantry frame. The upper beam alignment wheels 320 are located between two adjacent upper beams and are in contact with the two adjacent upper beams.

[0051] Preferably, the upper beam guiding wheel 320 includes a guiding base and two guiding wheel bodies connected to the guiding base, and the two guiding wheel bodies are respectively located between two adjacent upper beams and abut against the two adjacent upper beams. Through the above design, with the cooperation of multiple upper beam guiding wheels 320, it can be ensured that each adjacent upper beam abuts against the guiding wheel body, thereby further improving the smoothness.

[0052] In one preferred embodiment, moving wheels are connected to the driven door row base 210. The moving wheels are used to move the driven door row.

[0053] Working process:

[0054] When the door needs to be closed, the sectional door moves and unfolds to block the doorway. At this time, the active motor 140 is energized and works, and the first chain 153 is driven to rotate by driving the converter 151. The first driven door row connected to the first chain 153 through the fixing member 240 begins to follow and move. At this time, the load-bearing limiter connected to the first driven door row ensures that the first driven door row moves in the horizontal direction. At the same time, the second chain 233 of the first driven door row fixedly connected to the load-bearing limiter on the second active door row base 120 is driven to rotate; the second driven door row is connected to the second chain 233 of the first driven door row through the fixing member 240, and then moves synchronously with the first driven door row. The load-bearing limiter on the driven door row base 210 of the second driven door row is fixedly connected to the second chain 233 of the second driven door row, and then drives the next driven door row to move. Through the same working process and principle, multiple sectional door rows are driven to move together.

[0055] When the door needs to be opened, the sectional door moves and contracts to release the blockage of the door, and the active motor 140 can be reversed at this time.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A rear-driven sectional door, characterized in that, It includes an active door row and a driven door row arranged in parallel. The active door row includes a first active door row base (110), a second active door row base (120), an active bottom beam (130), an active motor (140) and a first transmission mechanism. One end of the active bottom beam (130) and the active motor (140) are connected to the first active door row base (110), and the other end of the active bottom beam (130) is connected to the second active door row base (120). The first transmission mechanism is arranged in the active bottom beam (130), and the active motor (140) is in transmission connection with the first transmission mechanism; The driven door row includes a driven door row base (210), a driven bottom beam (220), a second transmission mechanism, a fixing member (240) and a load-bearing limiting member. The driven bottom beam (220) is respectively connected to the second active door row base (120) and the driven door row base (210). The load-bearing limiting member is connected to the second active door row base (120) and is located in the driven bottom beam (220). The fixing member (240) is connected to the driven bottom beam (220) and is fixedly connected to the first transmission mechanism. The second transmission mechanism is fixedly connected to the load-bearing limiting member.

2. The rear-driven segmented door according to claim 1, wherein, There are multiple driven door rows arranged in parallel in sequence. The driven bottom beam (220) of the first driven door row is respectively connected to the second active door row base (120) and the driven door row base (210). The load-bearing limiting member of the first driven door row is connected to the second active door row base (120) and is located in the driven bottom beam (220) of the first driven door row. The fixing member (240) of the first driven door row is connected to the driven bottom beam (220) of the first driven door row and is fixedly connected to the first transmission mechanism. The second transmission mechanism of the first driven door row is fixedly connected to the load-bearing limiting member of the first driven door row; For two adjacent driven door rows, the driven bottom beam (220) of the rear-positioned driven door row is respectively connected to the driven door row base (210) of the front-positioned driven door row and the driven door row base (210) of the rear-positioned driven door row. The load-bearing limiting member of the rear-positioned driven door row is connected to the driven door row base (210) of the front-positioned driven door row and is located in the driven bottom beam (220) of the rear-positioned driven door row. The fixing member (240) of the rear-positioned driven door row is connected to the driven bottom beam (220) of the rear-positioned driven door row and is fixedly connected to the second transmission mechanism of the front-positioned driven door row. The second transmission mechanism of the rear-positioned driven door row is fixedly connected to the load-bearing limiting member of the rear-positioned driven door row.

3. The rear-driven sectional door according to claim 2, wherein The first transmission mechanism includes a drive converter (151), a first transmission tension adjustment member (152), and a first chain (153). The drive converter (151) includes a transmission fixed seat, a driving fixed seat, a driving rotating shaft, a transmission wheel, and a driving sprocket. The transmission fixed seat and the fixed seat are arranged in parallel at intervals. The fixed seat is fixedly connected to the first active door row base (110). The driving fixed seat is connected to one end of the active bottom beam (130). The driving rotating shaft is rotatably connected to the transmission fixed seat and the fixed seat. The transmission wheel and the driving sprocket are fixedly connected to the driving rotating shaft. A driving wheel is connected to the output shaft of the driving motor (140), and the driving wheel is meshed and connected to the transmission wheel; The first transmission tension adjustment member (152) includes a driven fixed seat, a driven rotating shaft, and a driven sprocket. The driven fixed seat is connected to the other end of the active bottom beam (130). The driven rotating shaft is rotatably connected to the driven fixed seat. The driven sprocket is fixedly connected to the driven rotating shaft. The first chain (153) is sleeved on the driving sprocket and the driven sprocket respectively. The fixing member (240) of the driven door row in the first position is fixedly connected to the first chain (153).

4. The rear-driven sectional door according to claim 2, wherein The second transmission mechanism includes a second transmission tension adjustment member (231), a third transmission tension adjustment member (232), and a second chain (233). Both the second transmission tension adjustment member (231) and the third transmission tension adjustment member (232) include a passive fixed seat, a passive rotating shaft, and a passive sprocket. The passive fixed seats of the second transmission tension adjustment member (231) and the third transmission tension adjustment member (232) are respectively connected to both ends of the driven bottom beam (220). The passive rotating shafts are respectively rotatably connected to the passive fixed seats. The passive sprockets are respectively fixedly connected to the passive rotating shafts. The second chain (233) is sleeved on the passive sprockets of the second transmission tension adjustment member (231) and the third transmission tension adjustment member (232) respectively; The second chain (233) of the driven door row in the front position is fixedly connected to the load-bearing limit member of the driven door row in the front position. The fixing member (240) of the driven door row in the rear position is fixedly connected to the second chain (233) of the driven door row in the front position.

5. A rear-driven segmented door according to claim 4, characterized in that, The load-bearing limit member includes a load-bearing seat (251), a plurality of horizontal guide wheels (252) and a vertical guide wheel (253) that are all rotatably connected to the load-bearing seat (251). The horizontal guide wheels (252) and the vertical guide wheel (253) are both in contact with the inner wall of the driven bottom beam (220). The second chain (233) is fixedly connected to the load-bearing seat (251).

6. The rear-driven segmented door according to claim 2, wherein The active door row and the driven door row both further include a first support column, a second support column and an upper beam. The upper beam of the active door row is arranged parallel to the upper side of the active bottom beam (130). The first support column and the second support column of the active door row are respectively vertically connected to both ends of the active bottom beam (130). The upper beam of the driven door row is arranged parallel to the upper side of the driven bottom beam (220). The first support column and the second support column of the driven door row are respectively vertically connected to both ends of the driven bottom beam (220).

7. A rear-drive segmented door according to claim 6, characterized in that, Notches are formed on the side walls of the active bottom beam (130) and the driven bottom beam (220). A load-bearing wheel (310) is rotatably connected to the support column of the driven bottom beam (220). The load-bearing wheel (310) passes through the notch and is respectively in abutment with the inner walls of the active bottom beam (130) and the driven bottom beam (220) in a corresponding and matching manner.

8. A rear-driven sectional door according to claim 6, characterized in that, A first gantry is connected to the second active door row base (120) and is perpendicular to the active bottom beam (130). The first gantry is connected to the first support column. A second gantry is connected to the driven door row base (210) and is perpendicular to the driven bottom beam (220). The second gantry is connected to the second support column.

9. The rear-driven sectional door according to claim 8, wherein, Upper beam alignment wheels (320) are connected to the bottom of the cross beam of the first gantry and the bottom of the cross beam of the second gantry. The upper beam alignment wheels (320) are located between two adjacent upper beams and are in abutment with the two adjacent upper beams.

10. A rear-driven sectional door according to any one of claims 1-9, characterized in that, Moving wheels are connected to the driven door row base (210).

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