Turnover structure and fireproof avoiding device used in heavy conveyor

Abstract

The invention relates to an overturning structure and a fireproof avoiding device used in a heavy conveyor, the overturning structure comprises a fixed conveying line and a rotatable conveying line, and the rotatable conveying line comprises a conveying line main body; the rotating shaft is arranged at one end of the conveying line body; the motor shaft is arranged below the rotating shaft, a driving motor is arranged at one end of the motor shaft, and the motor shaft is meshed with the rotating shaft; and the torque detection sensor and the limit switch are arranged at the end part of the motor shaft and are respectively and electrically connected with the driving motor. The motor actively outputs power to drive the rotatable conveying line to turn over instead of passively depending on gravity; in the overturning process, the speed is controllable, the track is stable, the uncontrollability of gravity driving is eliminated, the impact and shaking risks are remarkably reduced, and the integrity of a heavy conveying line structure and connecting parts is protected.

Description

Technical Field

[0001] This invention relates to the field of conveyor technology, and more specifically to a tipping structure and fire avoidance device used in heavy-duty conveyors. Background Technology

[0002] Conveyors are widely used in the logistics industry, including e-commerce, express delivery, third-party logistics, and distribution centers. The fire protection requirements for logistics warehouses are also increasing. Large logistics warehouses have many storage areas. When the conveyor line passes through different areas, it must have a fire disconnect function to ensure that the fire doors can be fully lowered to prevent the spread of fire.

[0003] Patent CN117699417A discloses a logistics flipping structure, located at the intersection of a fixed conveyor line and a rotatable conveyor line, comprising: a first guardrail symmetrically arranged on the upper surface of the fixed conveyor line; a second guardrail symmetrically arranged on the upper surface of the rotatable conveyor line; a locking / unlocking assembly, including a pressing rod and a limiting block for limiting the pressing rod; the limiting block is inverted L-shaped and located on the upper surface of the second guardrail; the pressing rod passes through the limiting block and the first guardrail, with a pressing block at the first end extending beyond the limiting block and a tapered end extending beyond the second guardrail; a first spring is sleeved on the body of the pressing rod between the limiting block and the first guardrail, the end of the first spring facing away from the second guardrail being fixedly connected to the body of the pressing rod; and an elastic telescopic assembly. The device includes a rigid metal rod and a second spring. The rigid metal rod passes through the first and second guardrails and abuts against a pressing rod. The second spring is sleeved on the rigid metal rod located inside the second guardrail, with one end of the second spring facing the pressing rod fixedly connected to the rigid metal rod. When the fixed and rotatable conveyor lines are locked, under the action of the first spring, the first end of the rigid metal rod abuts against the tapered second end of the pressing rod, with the second end extending out of the second guardrail and inserting into the first guardrail, and the second spring is in a compressed state. When the fixed and rotatable conveyor lines are unlocked, the pressing rod moves downward, the second spring resets, and the second end of the rigid metal rod retracts into the second guardrail under the action of the second spring. However, after the above-mentioned material handling tilting structure is unlocked, the rotatable conveyor line can only fall to the lowest point by its own gravity. This falling process relies entirely on gravity and lacks active power control and buffer adjustment mechanisms. For heavy-duty conveyors, their overall mass is large and their motion inertia is strong. Simply relying on gravity to slide down will not only make it difficult to control the falling speed, but will also easily cause violent shaking such as impact and collision, resulting in deformation of the conveyor line structure and damage to connecting parts. At the same time, it will not be able to stop accurately at the preset docking position, which will seriously affect the continuity and stability of subsequent conveying operations. Therefore, this structure is not suitable for the overturning docking scenario of heavy-duty conveyors. Summary of the Invention

[0004] The purpose of this invention is to overcome at least one of the defects of the prior art and provide a tipping structure and fire avoidance device for use in heavy conveyors.

[0005] The objective of this invention can be achieved through the following technical solutions: One objective of this invention is a tilting structure for use in heavy-duty conveyors, comprising a fixed conveyor line and a rotatable conveyor line, the rotatable conveyor line being rotatable relative to the fixed conveyor line, the rotatable conveyor line comprising: Conveyor line body; A rotating shaft is located at one end of the main body of the conveyor line; A motor shaft is located below the rotating shaft, and a drive motor is provided at one end of the motor shaft. The motor shaft is meshed with the rotating shaft. A torque detection sensor and a limit switch are installed at the end of the motor shaft. The torque detection sensor and the limit switch are electrically connected to the drive motor. The torque detection sensor detects whether the motor shaft torque is in a first state and a second state. The first state is that the conveyor body is parallel to the fixed conveyor line. The second state is that the conveyor body is flipped upward relative to the fixed conveyor line to a designated position. The limit switch is used to prevent the drive motor from overshooting and continuing to drive the conveyor body to rotate downward when the conveyor body is flipped downward to be horizontal with the fixed conveyor line.

[0006] Furthermore, a pair of third sprockets are provided at the other end of the main body of the conveyor line; a pair of second sprockets are provided at both ends of the rotating shaft, and the pair of second sprockets are connected to the pair of third sprockets in a driving connection.

[0007] Furthermore, a first sprocket is provided at both ends of the rotating shaft, and the first sprocket is connected to a chain drive on a fixed conveyor line.

[0008] Furthermore, the torque detection sensor is a U-shaped photoelectric switch.

[0009] Furthermore, a pair of gears are provided between the motor shaft and the rotating shaft to mesh and connect the two.

[0010] Furthermore, the gear set includes a driving gear mounted on the motor shaft and a driven gear mounted on the rotating shaft, wherein the driving gear and the driven gear are meshed together.

[0011] Furthermore, a bearing assembly is provided at the connection between the rotating shaft and the main body of the conveyor line.

[0012] Furthermore, a bearing assembly is provided at the connection between the motor shaft and the main body of the conveyor line.

[0013] Furthermore, the rotation range of the rotating shaft is 0-90°.

[0014] The second objective of this invention is to provide a fire-avoidance device, which includes the flipping structure described above, and also includes a fire-resistant roller shutter door. When a fire occurs, the fireproof rolling shutter door sends a signal to start the drive motor as it falls. After the rotating shaft rotates to the specified torque, it triggers the torque detection sensor, which sends a signal to the drive motor to stop its rotation. Once the fire is extinguished, the drive motor drives the main body of the conveyor line to flip downwards until it is horizontal with the fixed conveyor line. If the torque detection sensor is not triggered when the motor shaft torque is in the first state, a signal is sent to the drive motor through the limit switch to stop the drive motor from rotating, so as to avoid overshoot of the drive motor.

[0015] Compared with the prior art, the present invention has the following advantages: (1) The present invention provides a flipping structure for use in heavy conveyors. The flipping structure drives the rotatable conveyor line to flip by actively outputting power from the motor, rather than passively relying on gravity. The speed is controllable and the trajectory is stable during the flipping process, eliminating the uncontrollability of gravity drive, significantly reducing the risk of impact and shaking, and protecting the integrity of the heavy conveyor line structure and connecting components.

[0016] (2) The present invention provides a flipping structure used in a heavy conveyor. The flipping structure monitors the torque change of the motor shaft in real time during the flipping process by setting a torque detection sensor: when the rotating shaft rotates to a specified torque, the torque sensor triggers a signal to the drive motor to stop the motor from rotating; when the drive motor drives the main body of the conveyor line to flip downward to be horizontal with the fixed conveyor line, if the torque of the motor shaft is in the first state and the torque detection sensor is not triggered, a signal is sent to the drive motor through a limit switch to stop the rotation of the drive motor, so as to avoid overshoot of the drive motor.

[0017] (3) The present invention provides a fire avoidance device. The device directly starts the drive motor through the signal of the fireproof roller shutter door falling, so that the rotatable conveyor line quickly flips to the avoidance position, ensuring that the fireproof roller shutter door falls completely to block the spread of fire. By combining torque detection and limit control, the avoidance action is accurate and rapid, significantly improving the fire safety performance of places such as logistics warehouses. Attached Figure Description

[0018] Figure 1 This is a top view of the overturning structure used in the heavy-duty conveyor in this invention; Figure 2 This is a side view of the overturning structure used in the heavy-duty conveyor in this invention; Figure 3 This is a front view of the overturning structure used in a heavy-duty conveyor in this invention; Figure 4This is a schematic diagram of the flipping structure used in the heavy-duty conveyor in this invention. The numbers in the diagram are as follows: 1-Drive motor, 2-First sprocket, 3-Second sprocket, 4-Rotating shaft, 5-Torque detection sensor, 6-Limit switch, 7-Gear set, 701-Driven gear, 702-Driving gear, 8-Third sprocket, 9-Chain, 10-Bearing assembly, 11-Motor shaft. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0020] Example 1 This embodiment provides a tipping structure for use in a heavy-duty conveyor; see details below. Figure 1-4 The system includes a fixed conveyor line and a rotatable conveyor line, wherein the rotatable conveyor line is rotatable relative to the fixed conveyor line, and the rotatable conveyor line includes: Conveyor line body; A rotating shaft 4 is installed at one end of the main body of the conveyor line; A motor shaft 11 is disposed below the rotating shaft 4, and a drive motor 1 is disposed at one end of the motor shaft 11. The motor shaft 11 is meshed with the rotating shaft 4. A torque detection sensor 5 and a limit switch 6 are installed at the end of the motor shaft 11. The torque detection sensor 5 and the limit switch 6 are electrically connected to the drive motor 1. The torque detection sensor 5 detects whether the torque of the motor shaft 11 is in a first state and a second state. The first state is that the conveyor body is parallel to the fixed conveyor line. The second state is that the conveyor body is flipped upward relative to the fixed conveyor line to a designated position. The limit switch 6 is used to prevent the drive motor 1 from overshooting and continuing to drive the conveyor body to rotate downward when the conveyor body is flipped downward to be horizontal with the fixed conveyor line.

[0021] In this embodiment, a pair of third sprockets 8 are provided at the other end of the main body of the conveyor line; a pair of second sprockets 3 are provided at both ends of the rotating shaft 4, and the pair of second sprockets 3 are connected to the pair of third sprockets 8 in a driving connection.

[0022] In this embodiment, a first sprocket 2 is also provided at both ends of the rotating shaft 4. The first sprocket 2 is connected to the chain 9 set on the fixed conveyor line. Since the fixed conveyor line is a standard conveyor line, which is existing technology well known to those skilled in the art, it will not be elaborated on here.

[0023] In this embodiment, the torque detection sensor 5 is a U-shaped photoelectric switch.

[0024] In this embodiment, a pair of gear sets 7 are provided between the motor shaft 11 and the rotating shaft 4 to mesh and connect the two.

[0025] In this embodiment, the gear set 7 includes a driving gear 702 disposed on the motor shaft 11 and a driven gear 701 disposed on the rotating shaft 4, wherein the driving gear 702 and the driven gear 701 are meshed and connected.

[0026] In this embodiment, a bearing assembly 10 is provided at the connection between the rotating shaft 4 and the main body of the conveyor line; a bearing assembly 10 is also provided at the connection between the motor shaft 11 and the main body of the conveyor line.

[0027] In this embodiment, the rotation range of the rotating shaft 4 is 0-90°.

[0028] In use, the flipping structure of this embodiment drives the rotation of the motor shaft 11 via the drive motor 1, which in turn drives the rotation of the rotating shaft 4, thus achieving the flipping of the rotatable conveyor line instead of passively relying on gravity. During the flipping process, the speed is controllable and the trajectory is stable, eliminating the uncontrollability of gravity-driven systems, significantly reducing the risk of impact and shaking, and protecting the integrity of the heavy-duty conveyor line structure and connecting components. During the flipping process, the flipping structure of this embodiment uses a torque detection sensor 5 to monitor the torque change of the motor shaft in real time: when the rotating shaft 4 rotates to a specified torque, the torque sensor 5 triggers a signal to the drive motor 1, stopping the motor rotation; when the drive motor 1 drives the conveyor line body to flip downwards to be horizontal with the fixed conveyor line, if the torque of the motor shaft 11 is in the first state and the torque detection sensor is not triggered, a signal is sent to the drive motor 1 via the limit switch 6 to stop the rotation of the drive motor 1, so as to avoid overshoot of the drive motor 1.

[0029] Example 2 This embodiment provides a fire avoidance device, which includes a flipping structure as described in Embodiment 1, and also includes a fireproof roller shutter door; When a fire occurs, the fireproof rolling shutter door will send a signal to start the drive motor 1 when it falls. After the rotating shaft 4 rotates to the specified torque, it will trigger the torque detection sensor 5. The torque detection sensor 5 will send a signal to the drive motor 1 to stop the rotation of the drive motor 1. After the fire is extinguished, the drive motor 1 drives the main body of the conveyor line to flip downwards to be horizontal with the fixed conveyor line. If the torque of the motor shaft 11 is in the first state and the torque detection sensor 5 is not triggered, the limit switch 6 sends a signal to the drive motor 1 to stop the rotation of the drive motor 1, so as to avoid overshoot of the drive motor 1.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A tipping structure for use in a heavy-duty conveyor, comprising a fixed conveyor line and a rotatable conveyor line, the rotatable conveyor line being rotatable relative to the fixed conveyor line, characterized in that, The rotatable conveyor line includes: Conveyor line body; A rotating shaft (4) is set at one end of the main body of the conveyor line. A motor shaft (11) is provided below the rotating shaft (4), and a drive motor (1) is provided at one end of the motor shaft (11). The motor shaft (11) is meshed with the rotating shaft (4). A torque detection sensor (5) and a limit switch (6) are installed at the end of the motor shaft (11). The torque detection sensor (5) and the limit switch (6) are electrically connected to the drive motor (1). The torque detection sensor (5) detects whether the torque of the motor shaft (11) is in a first state and a second state. The first state is that the conveyor body is parallel to the fixed conveyor line. The second state is that the conveyor body is flipped upward relative to the fixed conveyor line to a specified position. The limit switch (6) is used to prevent the drive motor (1) from overshooting and continuing to drive the conveyor body to rotate downward when the conveyor body is flipped downward to be horizontal with the fixed conveyor line.

2. The tipping structure for use in a heavy-duty conveyor according to claim 1, characterized in that, The other end of the main body of the conveyor line is provided with a pair of third sprockets (8); the two ends of the rotating shaft (4) are provided with a pair of second sprockets (3), and the pair of second sprockets (3) are connected to the pair of third sprockets (8) in a transmission connection.

3. The overturning structure for use in a heavy-duty conveyor according to claim 1, characterized in that, The rotating shaft (4) is also provided with a first sprocket (2) at both ends, and the first sprocket (2) is connected to the chain (9) on the fixed conveyor line.

4. The tipping structure for use in a heavy-duty conveyor according to claim 1, characterized in that, The torque detection sensor (5) is a U-shaped photoelectric switch.

5. A tipping structure for use in a heavy-duty conveyor according to claim 1, characterized in that, A pair of gear sets (7) are provided between the motor shaft (11) and the rotating shaft (4) to mesh and connect the two.

6. A tipping structure for use in a heavy-duty conveyor according to claim 5, characterized in that, The gear set (7) includes a driving gear (702) mounted on the motor shaft (11) and a driven gear (701) mounted on the rotating shaft (4), wherein the driving gear (702) and the driven gear (701) are meshed together.

7. A tipping structure for use in a heavy-duty conveyor according to claim 1, characterized in that, A bearing assembly (10) is provided at the connection between the rotating shaft (4) and the main body of the conveyor line.

8. A tipping structure for use in a heavy-duty conveyor according to claim 1, characterized in that, A bearing assembly (10) is provided at the connection between the motor shaft (11) and the main body of the conveyor line.

9. A tipping structure for use in a heavy-duty conveyor according to claim 1, characterized in that, The rotation range of the rotating shaft (4) is 0-90°.

10. A fire avoidance device, characterized in that, The device includes the flipping structure as described in any one of claims 1-9, and also includes a fireproof roller shutter door; When a fire occurs, the fireproof rolling shutter door will send a signal to start the drive motor (1) when it falls. After the rotating shaft (4) rotates to the specified torque, it will trigger the torque detection sensor (5). The torque detection sensor (5) will send a signal to the drive motor (1) to stop the rotation of the drive motor (1). After the fire is extinguished, the drive motor (1) drives the main body of the conveyor line to flip down to be horizontal with the fixed conveyor line. If the torque of the motor shaft (11) is in the first state and the torque detection sensor (5) is not triggered, the limit switch (6) sends a signal to the drive motor (1) to stop the rotation of the drive motor (1) in order to avoid overshoot of the drive motor (1).

Images