Automobile door body conveying line

Abstract

The application discloses a kind of automobile door body conveying line, it is related to automobile workshop conveying equipment technical field, including elevator, movable carrier, be located in the overhead of elevator and be matched with electric walking lifting appliance of hanging rail, carrier is elevated after being passed through elevator, can be moved along with electric walking lifting appliance synchronous movement of the distribution path of hanging rail.Elevator inside is equipped with two symmetrical distribution of support seat, and the both sides of carrier are fixed with docking rack, and the both sides of docking rack are equipped with two synchronous lifting insertion rods, and the connection state of insertion rod can be switched with support seat along with insertion rod movement.The application can transport inner panel, reinforcing plate and outer panel between spot welding, arc welding and other processes by using the mode of low-altitude or high-altitude transportation of lifting rail after the carrier loaded with door panel is elevated by elevator, to improve space utilization rate.Through this kind of conveying mode, the door in the carrier machine inside can also be avoided to contact with ground, to ensure the cleanliness of door panel before implementing processing operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile workshop conveying equipment, and in particular relates to an automobile door body conveying line. BACKGROUND

[0002] The automobile door body conveying line is a core logistics and process carrier connecting the whole link of door body processing, assembly and transfer in the automobile manufacturing process, and its core role is to realize efficient flow, accurate positioning and flexible adaptation of the door from "parts" to "assembly", and it runs through the three core workshops of welding, painting and assembly, and directly affects the production rhythm, assembly precision and product quality.

[0003] The automobile door body conveying line replaces manual handling by automatic conveying, supports the high production demand of the whole vehicle. In the process of transportation and processing, the technology of mechanical positioning and visual guidance is used to reduce the rework rate in the later stage. Moreover, it can support mixed production of multiple vehicle models and multiple configurations (such as vehicle doors with keyless entry and ordinary vehicle doors), and meet the processing needs of new energy vehicles. Therefore, the wide use of the automobile door body conveying line can reduce operating costs, reduce dependence on manual labor, and reduce the inventory of parts through accurate distribution.

[0004] The existing conveying line applied to the automobile door mostly realizes the transfer operation of the automobile door by means of lifting equipment, suspension chain guide equipment or other transportation equipment. However, in the process of transferring the door, the carrier with the automobile door needs to be locked with the equipment to maintain the stability of the carrier during movement and ensure the safety of the door during movement. Therefore, when the carrier is switched to different equipment, it needs to spend a certain amount of time to unlock the previous equipment and dock with the next equipment, which affects the transportation efficiency during the long-term movement and transportation of the automobile door by the carrier. Therefore, the present application provides an automobile door body conveying line to meet the needs. SUMMARY

[0005] In view of the above problems, the present application provides an automobile door body conveying line.

[0006] To achieve the above purpose, the present application provides the following technical scheme: an automobile door body conveying line, comprising an elevator, a movable carrier, a suspension rail arranged above the elevator, and an electric walking sling matched with the suspension rail, the carrier can move synchronously with the electric walking sling along the distribution path of the suspension rail after being raised by the elevator.

[0007] The inside of the elevator is provided with two symmetrically distributed holders, the two sides of the carrier are fixed with docking racks, the inside of the docking rack is provided with two synchronously liftable insertion rods, and the insertion rod can switch the connection state with the holder as the insertion rod moves.

[0008] The top of the carrier is provided with two symmetrically distributed locking racks, both groups of locking racks move synchronously with the insertion rod, the electric walking hoist is provided with a connection frame, both sides of the connection frame are provided with two groups of docking channels respectively matched with the two groups of locking racks, when the carrier and the docking frame are raised with the support, the two groups of locking racks correspond to the docking channels. When the insertion rod moves away from the support, the two locking racks move and slide into the inside of the docking channel.

[0009] Further, two extension frames distributed from front to back are fixed on the docking frame, the bottom of the extension frame is fixed with a roller group through the bottom plate, when the carrier moves to the inside of the elevator, the extension frame moves above the support, and the roller group abuts against the support, as the insertion rod descends, the insertion rod penetrates the bottom plate and the support.

[0010] Further, the two insertion rods inside the same docking frame are fixed through the drive frame, the inside of the drive frame is connected with a drive gear one through a rack, when the two drive gears one on both sides of the carrier rotate synchronously, the two drive frames and the two groups of insertion rods move synchronously.

[0011] Further, the bottom of the two locking racks is fixed with a sliding seat, the two sliding seats are arranged on the same bidirectional screw rod, the bidirectional screw rod is installed on the top of the carrier through a bearing seat, and the two ends of the bidirectional screw rod are installed with drive gears two which can rotate synchronously, the same side of the two drive gears two is connected with a guide frame, as the two guide frames move, the two drive gears two and the bidirectional screw rod rotate synchronously, and the two sliding seats and the locking racks move synchronously in opposite directions.

[0012] Further, the two drive gears two are provided with synchronous gears connected with the guide frames below, the two synchronous gears are parallelly distributed with the two drive gears one, and the two synchronous gears and the drive gears one are connected through the same drive rod, when the drive rod, the two synchronous gears and the two drive gears one rotate in the same direction, the two groups of insertion rods and the two guide frames move synchronously, and the two drive gears two and the bidirectional screw rod rotate synchronously.

[0013] Further, the top of the carrier is fixed with two symmetrically distributed cross beams, the top of the cross beam is fixed with a guide rail, the bidirectional screw rod and the drive gear two are located in the opposite space of the two cross beams, and the two sliding seats are slidingly connected with the guide rail, when the two locking racks move synchronously in opposite directions, the sliding seat moves along the distribution direction of the guide rail.

[0014] Further, the two symmetrically arranged adapter plates are fixed at the center of the inner side of the carrier, the synchronization gear and the driving rod are located inside the gap space formed by the two adapter plates, and the driving rod is rotatably installed with one of the adapter plates through the positioning frame. One of the adapter plates is provided with a driver matched with the driving rod, the guide frame is slidably connected with one of the adapter plates, and the bidirectional screw rod is located directly above the gap space formed by the two adapter plates.

[0015] Further, the two groups of equidistantly arranged partition plates are arranged on the inner side of the carrier, each group of the partition plates is fixed to the side of the adapter plate opposite to the opening of the carrier, and the adjacent two partition plates form a containing space for placing the door.

[0016] Further, the extension frame is fixed at the lower position of the left and right sides of the carrier, the walking wheels are fixed at the bottom ends of the extension frames, and the infrared sensors for monitoring the position state of the carrier are fixed on the holders.

[0017] In summary, the technical effects and advantages of the present application are:

[0018] 1. The carrier capable of loading the door panel parts is lifted by the elevator, and then transported by the overhead or low-altitude rail, so that the inner panel, the reinforcing plate and the outer panel of the door can be transported between the spot welding and arc welding processes, and the space utilization is improved. By this conveying mode, the door in the carrier machine can avoid contacting the ground, and the cleanliness of the door panel parts before the machining operation is ensured.

[0019] 2. The plug rod in the present application can move to switch the connection state with the holder, and the two locking frames can switch the connection state with the adapter frame along with the movement of the plug rod. This connection mode reduces the waiting time during the relative connection process of the carrier separating from the elevator and the electric walking hoist, shortens the connection time, improves the stability of the connection, and further improves the overall transportation efficiency. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a structure diagram when the carrier of the present application moves to the inner side of the elevator.

[0022] Figure 2 It is a schematic diagram when the carrier is lifted by the lifting drive.

[0023] Figure 3 Figure 1 is a schematic diagram of the docking of the carrier and the docking frame of the present application.

[0024] Figure 4 Figure 2 is a schematic diagram of the elevator structure of the present application.

[0025] Figure 5 Figure 3 is a schematic diagram of the connection structure of the overhead rail, the electrically driven walking hoist, and the docking frame of the present application.

[0026] Figure 6 Figure 4 is a schematic diagram of the state of the carrier moving to the inside of the elevator, and the insertion of the insertion rod and the support seat.

[0027] Figure 7 Figure 5 is a schematic diagram of the enlarged structure at A in the present application. Figure 6

[0028] Figure 8 Figure 6 is a schematic diagram of the connection structure of the carrier, the docking frame, the insertion rod, and the locking frame of the present application.

[0029] Figure 9 Figure 7 is a schematic diagram of the structure of the carrier after being cut open.

[0030] Figure 10 Figure 8 is a schematic diagram of the structure of the insertion rod rising and the locking frame inserted into the docking channel.

[0031] Figure 11 Figure 9 is a schematic diagram of the structure of the carrier when the insertion rod is rising.

[0032] Figure 12 Figure 10 is a schematic diagram of the structure of the carrier after being cut open when the insertion rod is rising.

[0033] In the figure: 1, elevator; 2, carrier; 21, partition; 22, baffle; 23, docking plate; 24, extension frame; 25, walking wheel; 3, overhead rail; 31, electrically driven walking hoist; 4, docking frame; 41, docking channel; 5, support seat; 6, docking frame; 61, insertion rod; 62, driving frame; 63, driving gear one; 64, extension frame; 65, roller set; 7, locking frame; 71, sliding seat; 72, bidirectional screw rod; 73, driving gear two; 74, guide frame; 75, synchronous gear; 76, crossbeam; 77, guide rail; 8, driving rod; 81, positioning frame; 82, driver; 9, infrared sensor. DETAILED DESCRIPTION

[0034] ​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0035] Embodiment 1: Reference Figures 1-5 As shown in the figure, the automobile door body conveying line comprises a lift 1, a movable carrier 2, a hanging rail 3 arranged above the lift 1, and an electric walking lifting appliance 31 matched with the hanging rail 3. In the present application, the lift 1 with a proper specification can be selected according to the actual environment of the automobile processing workshop, and the hanging rail 3 and the electric walking lifting appliance 31 can be selected to have a specified installation height according to the actual environment of the automobile processing workshop. When the carrier 2 is lifted to the specified height by the lift 1, it can move synchronously with the electric walking lifting appliance 31 along the distribution path of the hanging rail 3.

[0036] In the present application, the carrier 2 capable of loading the automobile door panel parts is lifted by the lift 1, and then transported by the low-altitude or high-altitude transportation mode of the hanging rail 3, so that the inner panel, the reinforcing panel and the outer panel (hereinafter referred to as the automobile door panel parts) can be conveyed between the spot welding and arc welding processes. The space utilization rate is improved by avoiding the ground equipment through the air track conveying mode. Through this conveying mode, the automobile door in the machine inside the carrier 2 can also avoid contacting the ground, so as to ensure the cleanliness of the surface of the automobile door panel parts before the processing operation is implemented.

[0037] As shown in the figure, Figure 4 In the present application, two symmetrical distribution holders 5 are arranged in the inside of the lift 1, and the two sides of the carrier 2 are fixed with butt-joint racks 6. The inside of the butt-joint rack 6 is provided with two synchronous lifting insertion rods 61. With the movement of the insertion rod 61, the insertion rod 61 can switch the connection state with the holder 5.

[0038] When the butt-joint rack 6 moves to the inside of the lift 1 along with the carrier 2, the insertion rod 61 is lowered to be inserted with the holder 5, so as to lock the holder 5. When the holder 5 is lifted under the action of the lift 1, the carrier 2 and the butt-joint racks 6 located on both sides of the carrier 2 will be lifted synchronously under the locking action of the insertion rod 61, so as to ensure the stability of the carrier 2 in the transportation process.

[0039] The top end of the carrier 2 is provided with two symmetrically distributed locking racks 7, and the two groups of locking racks 7 are synchronously moved with the insertion rod 61. The electric walking lifting appliance 31 is provided with a connection frame 4, and the two sides of the connection frame 4 are provided with two groups of docking channels 41 which are matched with the two groups of locking racks 7 respectively. The two groups of locking racks 7 are designed to accurately dock with the connection frame 4 on the electric walking lifting appliance 31. When the carrier 2 and the docking frame 6 are raised with the support base 5, the two groups of locking racks 7 will correspond to the docking channels 41 on the two sides of the connection frame 4, so as to prepare for the subsequent locking and transportation, as shown in Figure 2 .

[0040] In the process of moving the insertion rod 61 away from the support base 5, the two locking racks 7 are synchronously moved and slid into the inside of the docking channel 41, so that the carrier 2 is separated from the support base 5 and docked with the connection frame 4, realizing the close connection between the carrier 2 and the electric walking lifting appliance 31, as shown in Figure 3 . This connection mode not only reduces the waiting time during the process of separating the carrier 2 from the elevator 1 and docking with the electric walking lifting appliance 31, but also shortens the docking time, and improves the stability of the connection, further improving the efficiency of the overall transportation.

[0041] Further, in the present application, if it is necessary to transfer the carrier 2 and the door panel stored in the carrier 2 to the ground, when the carrier 2, the locking rack 7 and the connection frame 4 which is docked with the locking rack 7 are synchronously moved to the position of the elevator 1 along the distribution path of the lifting rail 3 with the electric walking lifting appliance 31, the insertion rod 61 is lowered and inserted and locked with the support base 5, and at the same time, the two locking racks 7 are moved away from the docking channel 41, so that the carrier 2 is separated from the connection frame 4 and docked with the support base 5, realizing the close connection between the carrier 2 and the elevator 1. Then, under the operation of the elevator 1, the carrier 2 is smoothly transferred to the ground.

[0042] As shown in Figure 6 , Figure 7 , in the process of moving the insertion rod 61 away from the support base 5 and docking the locking rack 7 with the docking channel 41, in order to ensure the stability of the carrier 2, the present application is fixed with two extension racks 64 which are distributed from front to back on the docking frame 6, and the bottom end of the extension rack 64 is fixed with a group of rollers 65 through the bottom plate. When the carrier 2 moves to the inside of the elevator 1, the extension rack 64 moves above the support base 5, and the group of rollers 65 abuts against the support base 5. With the descent of the insertion rod 61, the insertion rod 61 penetrates the bottom plate and is inserted with the support base 5, realizing the stable connection between the carrier 2 and the elevator 1. When the insertion rod 61 rises, the extension rack 64 abuts against the support base 5 through the group of rollers 65, ensuring the stability of the carrier 2. When the carrier 2 moves along the distribution path of the lifting rail 3 with the electric walking lifting appliance 31, the extension rack 64 and the group of rollers 65 move in the plane and move away from the support base 5.

[0043] In the present application, if it is necessary to transfer the carrier 2 and the door panel stored therein to the ground, when the carrier 2, the locking frame 7 and the docking frame 4 opposite to the locking frame 7 are synchronously moved to the position of the lifting machine 1 along the distribution path of the lifting rail 3 by the electric walking hoist 31, the extension frame 64 is moved above the holder 5, the roller set 65 abuts against the holder 5, and the stability of the carrier 2 can be ensured during the process that the locking frame 7 is separated from the docking channel 41 and the insertion rod 61 is inserted into the locking holder 5.

[0044] As shown in Figure 8 , the two insertion rods 61 inside the same docking frame 6 are fixed by the driving frames 62, the inside of the driving frame 62 is connected with the driving gear one 63 through rack meshing, when the two driving gear ones 63 on both sides of the carrier 2 rotate synchronously, the two driving frames 62 and the two groups of insertion rods 61 move synchronously. It is convenient to centrally control the insertion rod 61, and the operation convenience is improved.

[0045] As shown in Figure 9 , Figure 10 , the bottom end of the two locking frames 7 is fixed with the slide 71, the two slides 71 are arranged on the same bidirectional screw rod 72, the bidirectional screw rod 72 is installed on the top end of the carrier 2 through the bearing seat, and the two ends of the bidirectional screw rod 72 are installed with the driving gear two 73 which can rotate synchronously, the same side of the two driving gear twos 73 is meshed with the guide frame 74, with the movement of the two guide frames 74, the two driving gear twos 73 and the bidirectional screw rod 72 rotate synchronously, under the driving of the bidirectional screw rod 72, the two slides 71 and the locking frame 7 can realize the movement towards or away from each other, so as to meet the precise docking requirement with the docking channel 41 arranged on the docking frame 4.

[0046] As shown in Figure 9 , the two driving gear twos 73 are below the two driving gear twos 73, and the two driving gear twos 73 are below the two driving gear twos 73. The synchronous gear 75 meshed with the guide frame 74 is arranged below the two driving gear twos 73, the two synchronous gears 75 are arranged in parallel with the two driving gear ones 63, and the two synchronous gears 75 and the driving gear one 63 are connected by the same driving rod 8. When the driving rod 8, the two synchronous gears 75 and the two driving gear ones 63 rotate towards the same direction, under the connection of the two guide frames 74 and the two driving gear twos 73, the two groups of insertion rods 61 and the two guide frames 74 move synchronously, and the two driving gear twos 73 and the bidirectional screw rod 72 rotate synchronously. Therefore, the synchronous control of the insertion rod 61 lifting movement and the locking frame 7 horizontal movement is realized by the same driving rod 8, the time required for the separation of the carrier 2 and the holder 5 and the docking of the carrier 2 and the docking frame 4 is shortened, and the coordination and operation efficiency of the whole conveying line are improved.

[0047] As shown in Figure 10As shown, in order to improve the stability of the locking frame 7 and the sliding seat 71 during movement, the top end of the carrier 2 is fixed with two symmetrical distribution of cross beams 76, the top end of the cross beam 76 is fixed with a guide rail 77, the bidirectional screw rod 72 and the driving gear two 73 are located in the opposite space of the two cross beams 76, and the two sliding seats 71 are slidably connected with the guide rails 77. When the two locking frames 7 move synchronously in opposite directions, the sliding seat 71 moves along the distribution direction of the guide rail 77. The connection of the sliding seat 71 and the guide rail 77 further improves the connection strength of the entire locking frame 7 and the carrier 2. When the locking frame 7 is connected with the connecting rack 4, the connecting rack 4, the locking frame 7 and the carrier 2 can move stably with the movement of the electric walking hoist 31.

[0048] As shown in the figure, Figure 9 The inside of the carrier 2 is fixed with two symmetrical connection plates 23 at the center position, the synchronous gear 75 and the driving rod 8 are located inside the gap space formed by the two connection plates 23, in order to maintain the stability of the driving rod 8, the driving rod 8 is rotatably installed with one of the connection plates 23 through the positioning frame 81. One of the connection plates 23 is provided with a driver 82 matched with the driving rod 8, which can provide power for the rotation of the driving rod 8. In order to maintain the linearity of the guide frame 74 during movement, the guide frame 74 is slidably connected with one of the connection plates 23, and the bidirectional screw rod 72 is located above the gap space formed by the two connection plates 23.

[0049] In the embodiment 3, two groups of equidistant partition plates 21 are arranged inside the carrier 2, each group of partition plates 21 is fixed to one side of the connection plate 23 opposite to the opening of the carrier 2, and the adjacent two partition plates 21 form a containing space for placing the door. The arrangement of the front and rear containing spaces can accommodate multiple door panel parts, which facilitates the loading and fixing of the door panel parts. With the lifting and movement of the carrier 2, the synchronous transfer of multiple door panel parts can be realized. The front and rear openings of the carrier 2 are detachably connected with the baffle 22, which can prevent the door panel parts from falling and ensure the safety of the door panel parts during transportation.

[0050] The extension frame 24 is fixed to the lower position of the left and right sides of the carrier 2, and the walking wheel 25 is fixed to the bottom end of the extension frame 24. The walking wheel 25 makes the carrier 2 more flexible and convenient when moving on the ground. The infrared sensor 9 is fixed to the support 5 to monitor the position state of the carrier 2, which can monitor the position state of the carrier 2 in real time and provide a strong guarantee for the accurate control of the elevator 1.

[0051] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A car door conveyor line, characterized in that: The utility model provides an electric walking lifting device, including elevator (1), movable carrier (2), be located elevator (1) top's overhead line (3) and with overhead line (3) compatible electric walking lifting device (31), carrier (2) is elevated after elevator (1), can with electric walking lifting device (31) along the synchronous movement of overhead line (3) distribution path, The inside of the elevator (1) is provided with two symmetrically distributed supporting seats (5), the two sides of the carrier (2) are fixedly provided with butt joint racks (6), the inside of the butt joint rack (6) is provided with two synchronously liftable inserting rods (61), the inserting rod (61) can switch the connection state with the supporting seat (5) with the movement of the inserting rod (61), The top of the carrier (2) is provided with two symmetrically distributed locking racks (7), the two groups of locking racks (7) are synchronously moved with the inserting rod (61), the electric walking lifting device (31) is provided with a connecting rack (4), the two sides of the connecting rack (4) are provided with two butt joint channels (41) compatible with the two groups of locking racks (7) respectively, when the carrier (2), the butt joint rack (6) is elevated with the supporting seat (5), the two groups of locking racks (7) are corresponded with the butt joint channel (41), when the inserting rod (61) moves away from the supporting seat (5), the two locking racks (7) move and slide into the inside of the butt joint channel (41).

2. The automobile door body conveying line according to claim 1, characterized by: The butt joint rack (6) is fixedly provided with two extension racks (64) from front to back, the bottom of the extension rack (64) is fixedly provided with a roller group (65) through a bottom plate, when the carrier (2) moves to the inside of the elevator (1), the extension rack (64) moves above the supporting seat (5), and the roller group (65) abuts against the supporting seat (5), with the descending of the inserting rod (61), the inserting rod (61) penetrates the bottom plate and the supporting seat (5) and is inserted.

3. The automobile door body conveying line according to claim 1, characterized by: The two inserting rods (61) inside the same butt joint rack (6) are fixedly connected through a driving rack (62), the inside of the driving rack (62) is connected with a driving gear one (63) through a rack, when the two driving gear ones (63) on the two sides of the carrier (2) rotate synchronously, the two driving racks (62) and the two groups of inserting rods (61) move synchronously.

4. The automobile door body conveying line according to claim 3, characterized by: The bottom of the locking rack (7) is fixedly provided with a sliding seat (71), the two sliding seats (71) are provided on the same bidirectional screw rod (72), the bidirectional screw rod (72) is installed on the top of the carrier (2) through a bearing seat, and the two ends of the bidirectional screw rod (72) are installed with driving gear two (73) that can rotate synchronously, the same side of the two driving gear two (73) is connected with a guide rack (74), with the movement of the two guide racks (74), the two driving gear two (73) and the bidirectional screw rod (72) rotate synchronously, and the two sliding seats (71) and the locking racks (7) move synchronously in opposite directions.

5. The automobile door body conveying line according to claim 4, characterized by: Two driving gears two (73) below are provided with synchronization gear (75) meshing connection with guide frame (74), two synchronization gear (75) are distributed in parallel with two driving gear one (63), and two synchronization gear (75), driving gear one (63) are connected by the same drive rod (8), when the drive rod (8), two synchronization gear (75) and two driving gear one (63) rotate towards the same direction, two groups of inserting rod (61) and two guide frames (74) move synchronously, two driving gears two (73) and two-way screw rod (72) rotate synchronously.

6. The automobile door body conveying line according to claim 4, characterized by: The top of the carrier (2) is fixed with two symmetrically distributed cross beams (76), the top of the cross beam (76) is fixed with a guide rail (77), the two-way screw rod (72) and the driving gear two (73) are located in the opposite space of the two cross beams (76), and the two sliding seats (71) are slidably connected with the guide rails (77), when the two locking frames (7) move synchronously in opposite directions, the sliding seat (71) moves along the distribution direction of the guide rail (77).

7. The automobile door body conveying line according to claim 5, characterized by: The inside center of the carrier (2) is fixed with two symmetrically arranged link plates (23), the synchronization gear (75) and the driving rod (8) are located inside the gap space formed by the two link plates (23), and the driving rod (8) is rotatably installed with one of the link plates (23) through the positioning frame (81), one of the link plates (23) is provided with a driver (82) matched with the driving rod (8), the guide frame (74) is slidably connected with one of the link plates (23), and the two-way screw rod (72) is located inside the gap space formed by the two link plates (23) and directly above.

8. The automobile door body conveying line according to claim 1, characterized by: The inside of the carrier (2) is provided with two groups of equidistantly arranged partition plates (21), each group of the partition plates (21) is fixed on the side of the link plate (23) opposite to the opening of the carrier (2), and the adjacent two partition plates (21) form a containing space for placing the door, and the front and rear openings of the carrier (2) are detachably connected with the baffle (22).

9. The automobile door body conveying line according to claim 1, characterized by: The lower positions of the left and right sides of the carrier (2) are fixed with extension frames (24), the bottom ends of the extension frames (24) are fixed with walking wheels (25), and the upper ends of the extension frames (24) are fixed with infrared sensors (9) for monitoring the position state of the carrier (2).

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