A two-way automatic door opening device and a method of operation thereof

Abstract

The application relates to a bidirectional automatic door opening device and a running method thereof, which comprises a cabin body, a door opening mechanism, a door locking mechanism and a cabin door, the door opening mechanism is installed on the outer wall of the cabin door and adjacent to one end of the cabin door opening, the door locking mechanism is installed on the outer wall of the cabin body and adjacent to one side of the cabin door, two pairs of transmission assemblies are arranged in the conveying direction of the door locking mechanism, and the door opening mechanism can be driven to transmit the door opening action in the forward and reverse directions during the conveying process, so that the bidirectional automatic opening of the cabin door in the conveying system is realized. Through reasonable design, the bidirectional automatic opening of the cabin door in the conveying system is realized, and the automation degree of the conveying device is greatly improved; through reasonable arrangement of each mechanism, each mechanism is nested with each other, and the occupied space of the door opening device is greatly reduced; in the application, multiple sets of components are arranged to transmit the movement, and the transmission process is compact.

Description

TECHNICAL FIELD

[0001] The present application relates to a door opening device, in particular to a bidirectional automatic door opening device. BACKGROUND

[0002] Linear transportation is a common transportation mode, which is often used in various warehouse scenes.

[0003] The linear transportation in the current industry has the following problems:

[0004] (1) The common linear conveying mode is open conveying, which cannot be used for some special materials that need closed conveying;

[0005] (2) The feeding and discharging of the conveying system depend on manual labor, which is labor-intensive;

[0006] (3) Workers need to pay attention to whether the materials are in place at all times and take away the materials in time, otherwise, the materials may be stacked or collided, affecting the progress and efficiency of conveying, and even causing damage to the materials. SUMMARY

[0007] The purpose of the present application is to provide a bidirectional automatic door opening device and its operation method, which solves the problems of low automation, dependence on manual labor and high labor intensity of the existing conveying system. By reasonably distributing and nesting the door opening mechanism and the door locking mechanism, the door opening mechanism and the door locking mechanism are installed on the outer wall of the cabin, which not only compresses the occupied space of the door opening device to the maximum extent, but also realizes the bidirectional automatic door opening function of the door opening device during the material in-out process.

[0008] To achieve the above purpose, the technical scheme of the present application is: a bidirectional automatic door opening device, comprising a cabin, a door opening mechanism, a door locking mechanism and a cabin door, the door opening mechanism is installed on the outer wall of the cabin door adjacent to one end of the cabin door opening, and the door locking mechanism is installed on the outer wall of the cabin adjacent to one side of the cabin door, the door locking mechanism is arranged with two pairs of transmission assemblies in the conveying direction, which can transmit the door opening action to the door opening mechanism in both forward and reverse directions during conveying, thereby realizing the bidirectional automatic opening of the cabin door in the conveying system.

[0009] Further, the cabin is a rectangular cabin room welded by steel plates.

[0010] Further, the cabin door is an outward opening type cabin room welded by steel plates.

[0011] Further, the door opening mechanism is composed of a door opening mechanism support, a door opening shaft, a stopper, a stopper seat, a door opening shaft shell, a door opening shaft bushing, a door opening shaft lever, a double-arm lever support, a fork spring, a fork, a wrist, a first prong, an adjusting screw, a second prong, a double-arm lever, a limit switch, an oil cup, a travel switch fan wheel, a spring, a double-arm lever bushing, and a sliding sleeve. The door opening mechanism support, the door opening shaft, the door opening shaft shell, the door opening shaft bushing, and the door opening shaft lever constitute a door opening shaft assembly. The door opening shaft bushing is sleeved on both ends of the door opening shaft, and the door opening shaft bushing is installed in the door opening mechanism support. The door opening mechanism support is installed on one end of the outer wall of the hatch door adjacent to the hatch opening through bolt coupling. The door opening shaft assembly is installed on one end of the door opening shaft, and is used to drive the door opening shaft to rotate. The door opening shaft shell is installed on the middle part of the door opening shaft, and rotates with the door opening shaft, thereby performing the door opening action. The travel switch fan wheel is installed on the other end of the door opening shaft, and the limit switch is installed beside the travel switch fan wheel. The first prong, the adjusting screw, and the second prong constitute an adjusting screw assembly. The first prong and the second prong are sleeved on both ends of the adjusting screw. The first prong is connected with the door opening lever, and the second prong is connected with the double-arm lever. The double-arm lever support, the double-arm lever, and the double-arm lever bushing constitute a double-arm lever assembly. The double-arm lever is sleeved on the double-arm lever bushing, and the double-arm lever bushing is sleeved on the double-arm lever support. The double-arm lever support is installed on the side of the outer wall of the hatch door adjacent to the hatch door through bolt coupling. The fork spring, the fork, and the wrist constitute a fork assembly. One end of the fork is sleeved with a joint, and is connected with the double-arm lever. The fork is sleeved with the wrist. The fork assembly and the double-arm lever assembly are installed on the same side through bolt coupling. The fork spring is sleeved between the joint and the wrist of the fork, and is used to drive the fork to move linearly.

[0012] Further, the movement angle range of the door opening shaft shell is 50°, which corresponds to the door closing state and the maximum door opening state, respectively.

[0013] Further, the door locking mechanism is composed of a guide shaft spring, a guide shaft, a guide shaft sleeve, a guide shaft support, a guide shaft joint, a three-arm lever, a connecting rod, a movable bolt sleeve, a movable bolt support, a left nut, a connecting rod joint, a connecting arm, a roller, a gasket, a movable bolt spring, a movable bolt, a three-arm lever support, a three-arm lever sleeve, a driving arm support, a driving arm shaft, a driving arm sleeve, and a driving arm, wherein the movable bolt sleeve, the movable bolt support, the roller, the gasket, the movable bolt spring, and the movable bolt form a movable bolt assembly, the roller arranged on the middle section of the movable bolt transmits the door opening action to the movable bolt, the movable bolt spring is sleeved on the movable bolt between the gasket and the movable bolt support, and is used for resetting the movable bolt; the guide shaft, the guide shaft sleeve, the guide shaft support, and the guide shaft joint form a guide shaft assembly, which is used for resetting the three-arm lever, has the same installation mode as the movable bolt assembly, and is installed on one side of the movable bolt assembly; the three-arm lever, the three-arm lever support, and the three-arm lever sleeve form a three-arm lever assembly, which is used for transmitting the motion to the movable bolt assembly, has the same installation mode as the double-arm lever assembly, is installed on the same side as the guide shaft assembly, and is connected with the guide shaft assembly through the guide shaft joint; and the connecting arm, the driving arm support, the driving arm shaft, the driving arm sleeve, and the driving arm form a driving arm assembly, which is used for transmitting the motion of the conveying device to the three-arm lever assembly through the connecting rod, has the same installation mode as the three-arm lever assembly, is installed on the other side of the movable bolt assembly, and has the connecting rod joint sleeved on both ends of the connecting rod, one end of the connecting rod is used for connecting the three-arm lever assembly, and the other end of the connecting rod is used for connecting the driving arm assembly.

[0014] Further, the driving arm assembly, the connecting rod, the three-arm lever assembly, and the guide shaft assembly are arranged in pairs.

[0015] Further, the motion angle range of the driving arm is 22°, which corresponds to the door closing state and the maximum door opening state respectively.

[0016] A running method of a bidirectional automatic door opening device, comprising:

[0017] S1, confirming the warehouse in / out mode: confirming the warehouse in / out mode, so as to confirm the conveying direction;

[0018] S2, the warehouse out mode;

[0019] S2-1, conveying starts: the conveying device starts, and the conveying of the material starts;

[0020] S2-2, conveying is in place: the conveying device is in place, a driving stopper arranged on the conveying device touches and drives the driving arm to rotate, and the motion is transmitted to the movable bolt through the motion transmission between the components of the door locking mechanism;

[0021] S2-3, the hatch is opened: the movable bolt is pulled out, the fork rod is driven to extend by the fork rod spring, the movement is transmitted to the hatch opening shaft shell through the movement transmission between each component of the hatch opening mechanism, and the hatch is opened;

[0022] S2-4, artificial loading: artificial loading of materials in the warehouse into the conveying device through the hatch opening, and closing the hatch;

[0023] S2-5, material unloading: the material is unloaded with the conveying device;

[0024] S2-6, repeat the above steps;

[0025] S3, the warehouse mode;

[0026] S3-1, start conveying: the conveying device is started, and the material conveying is started;

[0027] S3-2, the conveying device is in place: the conveying device is in place, the driving block provided on the conveying device touches and drives the driving rotary arm to rotate, and the movement is transmitted to the movable bolt through the movement transmission between each component of the door locking mechanism;

[0028] S3-3, the hatch is opened: the movable bolt is pulled out, the fork rod is driven to extend by the fork rod spring, the movement is transmitted to the hatch opening shaft shell through the movement transmission between each component of the hatch opening mechanism, and the hatch is opened;

[0029] S3-4, artificial loading: artificial loading of materials in the warehouse into the conveying device through the hatch opening, and closing the hatch;

[0030] S3-5, material unloading: the material is unloaded with the conveying device;

[0031] S3-6, repeat the above steps.

[0032] Compared with the prior art, the present application has the following beneficial effects:

[0033] (1) The present application realizes the bidirectional automatic opening of the hatch in the conveying system through reasonable design, and greatly improves the automation degree of the conveying device.

[0034] (3) The present application reasonably arranges each mechanism, and nests each mechanism, so that the occupied space of the door opening device is greatly reduced.

[0035] (3) In the present application, multiple sets of components are arranged to transmit movement, and the transmission process is compact.

[0036] (4) The door locking mechanism in the present application is arranged with two pairs of transmission components in the conveying direction, and the door opening action can be transmitted to the hatch opening mechanism in the forward and reverse directions during the conveying process.

[0037] (5) The multiple groups of springs are arranged in the application, which can effectively realize the driving and resetting of each component and has fast response speed.

[0038] (6) The driving block is arranged on the conveying device in the application, which can drive the door opening mechanism and the door locking mechanism to act, and accurately and timely realize the opening of the hatch.

[0039] (7) The door opening device in the application can be used in vertical conveying system and horizontal conveying system, and can meet various operation scenes and realize the bidirectional automatic door opening along the conveying direction in each scene. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is the overall structure schematic diagram of the bidirectional automatic door opening device of the application;

[0041] Figure 2 is the structure schematic diagram of the door opening mechanism in Figure 1 ;

[0042] Figure 3 is the side view of the door opening mechanism in Figure 2 ;

[0043] Figure 4 is the A-direction schematic diagram of the door opening mechanism in Figure 2 ;

[0044] Figure 5 is the B-B partial sectional view of the door opening mechanism in Figure 3 ;

[0045] Figure 6 is the C-C partial sectional view of the door opening mechanism in Figure 3 ;

[0046] Figure 7 is the structure schematic diagram of the door locking mechanism in Figure 1 ;

[0047] Figure 8 is the side view of the door locking mechanism in Figure 7 ;

[0048] Figure 9 is the automatic operation flow chart of the door opening device in the application;

[0049] In the diagram: 1. Cabin; 2. Door opening mechanism; 2-1. Door opening mechanism bracket; 2-2. Door opening shaft; 2-3. Stopper; 2-4. Stopper seat; 2-5. Door opening shaft housing; 2-6. Door opening shaft bushing; 2-7. Door opening shaft lever; 2-8. Double arm lever support; 2-9. Fork spring; 2-10. Fork; 2-11. Wrist; 2-12. First fork head; 2-13. Adjusting screw; 2-14. Second fork head; 2-15. Double arm lever; 2-16. Limit switch; 2-17. Oil cup; 2-18. Limit switch fan wheel; 2-19. Spring; 2-20. Double arm lever bushing; 2-21. Sliding sleeve; 3. Door locking mechanism; 4. Guide shaft spring. Spring 3-1, guide shaft 3-3, guide shaft sleeve 3-3, guide shaft support 3-4, guide shaft joint 3-5, three-arm lever 3-6, connecting rod 3-7, movable pin sleeve 3-8, movable pin support 3-9, left nut 3-10, connecting rod joint 3-11, connecting swing arm 3-12, roller 3-13, washer 3-14, movable pin spring 3-15, movable pin 3-16, three-arm lever support 3-17, three-arm lever sleeve 3-18, drive swing arm bracket 3-19, drive swing arm shaft 3-20, drive swing arm shaft sleeve 3-21, drive swing arm 3-22, hatch 4. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0051] like Figure 1 As shown, the present invention provides a two-way automatic door opening device, including a cabin body 1, a door opening mechanism 2, a door locking mechanism 3, and a cabin door 4. The door opening mechanism 3 is bolted to one end of the outer wall of the cabin door 1 adjacent to the opening of the cabin door 4, and the door locking mechanism 3 is bolted to one side of the outer wall of the cabin body 1 adjacent to the cabin door 4.

[0052] like Figures 2-6 As shown, the door opening mechanism 2 consists of a door opening mechanism bracket 2-1, a door opening shaft 2-2, a stopper 2-3, a stopper seat 2-4, a door opening shaft housing 2-5, a door opening shaft bushing 2-6, a door opening shaft lever 2-7, a double-arm lever support 2-8, a fork spring 2-9, a fork 2-10, a wrist 2-11, a first fork head 2-12, an adjusting screw 2-13, a second fork head 2-14, a double-arm lever 2-15, a limit switch 2-16, an oil cup 2-17, a travel switch fan wheel 2-18, a spring 2-19, a double-arm lever bushing 2-20, and a sliding sleeve 2-21.

[0053] The door opening mechanism support 2-1, the door opening shaft 2-3, the door opening shaft shell 2-5, the door opening shaft bushing 2-6 and the door opening shaft lever 2-7 constitute a door opening shaft assembly. The door opening shaft 2-3 is sleeved with the door opening shaft bushing 2-6 at both ends, the door opening shaft bushing 2-6 is installed in the door opening mechanism support 2-1, and the door opening mechanism support 2-1 is installed on the outer wall of the hatch door 1 by bolt coupling at one end adjacent to the hatch door 4. The door opening shaft assembly is installed at one end of the door opening shaft 2-3 and used to drive the door opening shaft 2-3 to rotate. The door opening shaft shell 2-5 is installed at the middle of the door opening shaft 2-3 and rotates with the door opening shaft 2-3, thereby performing the door opening action. The travel switch sector wheel 2-18 is installed at the other end of the door opening shaft 2-3, and the limit switch 2-16 is installed beside the travel switch sector wheel 2-18. The first fork head 2-13, the adjusting screw 2-13 and the second fork head 2-14 constitute an adjusting screw assembly. The adjusting screw 2-13 is sleeved with the first fork head 2-13 and the second fork head 2-14 at both ends, the first fork head 2-13 is connected with the door opening shaft lever 2-7, and the second fork head 2-14 is connected with the double-arm lever 2-15. The double-arm lever support 2-8, the double-arm lever 2-15 and the double-arm lever bushing 2-20 constitute a double-arm lever assembly. The double-arm lever 2-15 is sleeved on the double-arm lever bushing 2-20, the double-arm lever bushing 2-20 is sleeved on the double-arm lever support 2-8, and the double-arm lever support 2-8 is installed on the outer wall of the hatch door 1 by bolt coupling at one side adjacent to the hatch door 4. The fork lever spring 2-9, the fork lever 2-10 and the wrist 2-11 constitute a fork lever assembly. One end of the fork lever 2-10 is sleeved with a joint and connected with the double-arm lever 2-15, the fork lever 2-10 is sleeved with the wrist 2-11, and the fork lever assembly is installed on the same side with the double-arm lever assembly by bolt coupling. The fork lever spring 2-9 is sleeved between the joint and the wrist 2-11 of the fork lever 2-10 and used to drive the fork lever 2-10 to move linearly.

[0054] As shown in Figure 3 , the movement angle range of the door opening shaft shell 2-5 is 50°, which corresponds to the door closing state and the maximum door opening state respectively.

[0055] As shown in Figure 7 , Figure 8As shown, the door locking mechanism 3 is composed of a guide shaft spring 3-1, a guide shaft 3-3, a guide shaft sleeve 3-3, a guide shaft support 3-4, a guide shaft joint 3-5, a three-arm lever 3-6, a connecting rod 3-7, a movable bolt sleeve 3-8, a movable bolt support 3-9, a left nut 3-10, a connecting rod joint 3-11, a connecting arm 3-13, a roller 3-13, a gasket 3-14, a movable bolt spring 3-15, a movable bolt 3-16, a three-arm lever support 3-17, a three-arm lever sleeve 3-18, a driving arm support 3-19, a driving arm shaft 3-20, a driving arm shaft sleeve 3-21, and a driving arm 3-22. The movable bolt sleeve 3-8, the movable bolt support 3-9, the roller 3-13, the gasket 3-14, the movable bolt spring 3-15, and the movable bolt 3-16 constitute a movable bolt assembly. The movable bolt 3-16 is sleeved with the movable bolt sleeve 3-8 at both ends, the movable bolt sleeve 3-8 is installed in the movable bolt support 3-9, and the movable bolt support 3-9 is coupled with the same side of the cabin body 1 through a bolt. The middle section of the movable bolt 3-16 is provided with the roller 3-13, which is used to transmit the movement of the three-arm lever 3-6 to the movable bolt 3-16. The movable bolt 3-16 is provided with the gasket 3-14 on one side of the middle section, and the movable bolt spring 3-15 is sleeved on the movable bolt 3-16 between the gasket 3-14 and the movable bolt support 3-9, which is used to reset the movable bolt 3-16. The guide shaft 3-3, the guide shaft sleeve 3-3, the guide shaft support 3-4, and the guide shaft joint 3-5 constitute a guide shaft assembly, which is used to reset the three-arm lever 3-6 and is installed on one side of the movable bolt assembly in the same manner as the movable bolt assembly. The three-arm lever 3-6, the three-arm lever support 3-17, and the three-arm lever sleeve 3-18 constitute a three-arm lever assembly, which is used to transmit the movement to the movable bolt assembly and is installed on the same side as the guide shaft assembly in the same manner as the double-arm lever assembly and is connected with the guide shaft assembly through the guide shaft joint 3-5. The connecting arm 3-13, the driving arm support 3-19, the driving arm shaft 3-20, the driving arm shaft sleeve 3-21, and the driving arm 3-22 constitute a driving arm assembly, which is used to transmit the movement of the transmission device to the three-arm lever assembly through the connecting rod 3-7 and is installed on the other side of the movable bolt assembly in the same manner as the three-arm lever assembly. The connecting rod 3-7 is sleeved with the connecting rod joint 3-10 at both ends, one end of which is used to connect the three-arm lever assembly and the other end of which is used to connect the driving arm assembly.

[0056] As shown in Figure 7 , the driving arm assembly, the connecting rod 3-7, the three-arm lever assembly, and the guide shaft assembly are arranged in pairs. The movement angle range of the driving arm 3-22 is 22°, which corresponds to the closed door state and the maximum open door state, respectively.

[0057] As shown in Figure 9As shown, the present application provides a running method for a two-way automatic door opening device, and the main process is as follows:

[0058] S1, confirming the warehouse-in or warehouse-out mode: confirming the warehouse-in or warehouse-out mode, so as to confirm the conveying direction.

[0059] S2, warehouse-out mode.

[0060] S2-1, conveying starts: the conveying device starts to convey the materials.

[0061] S2-2, conveying is in place: the conveying device is in place, the driving block provided on the conveying device touches and drives the driving rotary arm to rotate, the movement is transmitted between the components of the door locking mechanism, and the movement is transmitted to the movable bolt.

[0062] S2-3, hatch door is opened: the movable bolt is pulled out, the fork rod is driven to extend by the fork rod spring, the movement is transmitted between the components of the door opening mechanism, and the movement is transmitted to the door opening shaft shell to open the hatch door.

[0063] S2-4, manual feeding: manually feeding the materials in the warehouse into the conveying device through the hatch door in the opened state, and closing the hatch door.

[0064] S2-5, materials are warehouse-out: the materials are warehouse-out along with the conveying device.

[0065] S2-6, repeating the above steps.

[0066] S3, warehouse-in mode.

[0067] S3-1, conveying starts: the conveying device starts to convey the materials.

[0068] S3-2, conveying device is in place: the conveying device is in place, the driving block provided on the conveying device touches and drives the driving rotary arm to rotate, the movement is transmitted between the components of the door locking mechanism, and the movement is transmitted to the movable bolt.

[0069] S3-3, hatch door is opened: the movable bolt is pulled out, the fork rod is driven to extend by the fork rod spring, the movement is transmitted between the components of the door opening mechanism, and the movement is transmitted to the door opening shaft shell to open the hatch door.

[0070] S3-4, manual material taking: manually taking the materials on the conveying device out of the hatch door in the opened state, storing in the warehouse, and closing the hatch door.

[0071] S3-5, materials are warehouse-in: the materials are warehouse-in.

[0072] S3-6, repeating the above steps.

Claims

1. A two-way automatic door opening device, characterized in that: The system includes a cabin, a door opening mechanism, a door locking mechanism, and a door. The door opening mechanism is installed on the outer wall of the door at one end near the door opening, and the door locking mechanism is installed on the outer wall of the cabin at one side near the door. The door locking mechanism has two pairs of transmission components arranged in the conveying direction, which are used to transmit the door opening action to the door opening mechanism in both forward and reverse directions during the conveying process, thereby realizing bidirectional automatic opening of the door in the conveying system. The door opening mechanism consists of a door opening mechanism bracket, a door opening shaft, a stopper, a stopper seat, a door opening shaft housing, a door opening shaft bushing, a door opening shaft lever, a double-arm lever support, a fork spring, a fork, a wrist, a first fork head, and an adjusting screw. The door opening mechanism consists of a second fork, a double-arm lever, a limit switch, an oil cup, a travel switch fan wheel, a spring, a double-arm lever bushing, and a sliding sleeve. The door opening mechanism bracket, door opening shaft, door opening shaft housing, door opening shaft bushing, and door opening shaft lever constitute the door opening shaft assembly. Door opening shaft bushings are fitted at both ends of the door opening shaft, and the door opening shaft bushings are installed inside the door opening mechanism bracket. The door opening mechanism bracket is bolted to one end of the outer wall of the hatch near the hatch opening. The door opening shaft assembly is installed at one end of the door opening shaft and is used to drive the door opening shaft to rotate. The door opening shaft housing is installed in the middle of the door opening shaft and rotates with the door opening shaft, thereby performing the door opening action. A limit switch fan wheel is installed at the other end of the door opening shaft, and a limit switch is installed next to the limit switch fan wheel; the first fork, adjusting screw, and second fork constitute the adjusting screw assembly; the first fork and second fork are respectively fitted at both ends of the adjusting screw, the first fork is connected to the door opening shaft lever, and the second fork is connected to the double-arm lever; the double-arm lever support, double-arm lever, and double-arm lever bushing constitute the double-arm lever assembly; the double-arm lever is fitted on the double-arm lever bushing, the double-arm lever bushing is fitted on the double-arm lever support, and the double-arm lever support is bolted to the outer wall of the hatch on the side adjacent to the hatch; the fork spring, fork, and wrist constitute the fork assembly; the fork spring... One end is fitted with a connector and connected to the double-arm lever. A wrist is fitted on the fork. The fork assembly is bolted to the double-arm lever assembly and installed on the same side. A fork spring is fitted between the connector and the wrist on the fork to drive the fork to move linearly. The locking mechanism consists of a guide shaft spring, a guide shaft, a guide shaft sleeve, a guide shaft support, a guide shaft connector, a three-arm lever, a connecting rod, a movable pin sleeve, a movable pin support, a left nut, a connecting rod connector, a connecting swing arm, a roller, a washer, a movable pin spring, a movable pin, a three-arm lever support, a three-arm lever sleeve, a drive swing arm bracket, a drive swing arm shaft, a drive swing arm shaft sleeve, and a drive swing arm assembly. The movable pin assembly comprises a movable pin bushing, a movable pin support, rollers, a washer, a movable pin spring, and a movable pin. Rollers positioned at the middle of the movable pin transmit the opening action to the movable pin. A movable pin spring is fitted onto the movable pin between the washer and the movable pin support to reset the movable pin. The guide shaft assembly comprises a guide shaft bushing, a guide shaft support, and a guide shaft connector, used to reset the three-arm lever. Its installation method is the same as the movable pin assembly, and it is installed on one side of the movable pin assembly. The three-arm lever, three-arm lever support, and three-arm lever shaft... The three-arm lever assembly is used to transmit motion to the movable pin assembly. Its installation method is the same as that of the two-arm lever assembly. It is installed on the same side as the guide shaft assembly and connected to the guide shaft assembly through the guide shaft joint. The connecting arm, drive arm bracket, drive arm shaft, drive arm shaft sleeve, and drive arm constitute the drive arm assembly, which is used to transmit the motion of the transmission device to the three-arm lever assembly through the connecting rod. Its installation method is the same as that of the three-arm lever assembly. It is installed on the other side of the movable pin assembly. The two ends of the connecting rod are respectively fitted with connecting rod joints. One end is used to connect to the three-arm lever assembly, and the other end is used to connect to the drive arm assembly.

2. The bidirectional automatic door opening device according to claim 1, characterized in that: The cabin is a rectangular compartment made of welded steel plates.

3. The bidirectional automatic door opening device according to claim 1, characterized in that: The hatch is an outward-opening compartment made of welded steel plates.

4. The bidirectional automatic door opening device according to claim 1, characterized in that: The door hinge housing has a movement angle range of 50°, corresponding to the closed state and the maximum open state, respectively.

5. The bidirectional automatic door opening device according to claim 1, characterized in that: The drive arm assembly, connecting rod, three-arm lever assembly, and guide shaft assembly are arranged in pairs.

6. The bidirectional automatic door opening device according to claim 1, characterized in that: The range of motion angle of the drive arm is 22°, corresponding to the closed state and the maximum open state respectively.

7. A method for operating the bidirectional automatic door opening device according to any one of claims 1-6, characterized in that, include: S1, Confirm Inbound / Outbound Mode: Confirm the inbound or outbound mode to determine the conveying direction; S2, outbound mode; S2-1, Conveying Start: The conveying device is started, and material conveying begins; S2-2, Conveying in place: When the conveying device is in place, the drive block on the conveying device touches and drives the drive arm to rotate. Through the motion transmission between the components of the locking mechanism, the motion is transmitted to the moving latch. S2-3, hatch opening: The movable latch is pulled out, the fork spring drives the fork to extend, and the motion is transmitted to the hatch shaft housing through the motion transmission between the components of the hatch opening mechanism, thus opening the hatch; S2-4, Manual feeding: The materials in the warehouse are manually fed into the conveyor device from the open hatch and then the hatch is closed. S2-5, Material Outbound: The material is outbound via the conveyor system; S2-6, Repeat the above steps; S3, Inbound Mode; S3-1, Start Conveying: The conveying device is started and material is being conveyed. S3-2, Conveying device in position: When the conveying device is in position, the drive block on the conveying device touches and drives the drive arm to rotate. Through the motion transmission between the components of the locking mechanism, the motion is transmitted to the movable latch. S3-3, hatch opening: The movable latch is pulled out, the fork spring drives the fork to extend, and the motion is transmitted to the hatch shaft housing through the motion transmission between the components of the hatch opening mechanism, thus opening the hatch; S3-4, Manual material handling: The material on the conveyor is manually removed from the open hatch, stored in the warehouse, and the hatch is closed. S3-5, Material Receiving: The material has been received into the warehouse; S3-6, Repeat the above steps.

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