Pneumatic motor mechanism for roller shutter door

Abstract

The utility model discloses a pneumatic motor mechanism for a roller shutter door, which comprises a pneumatic motor, a speed reducer, a clutch cylinder and a pneumatic control box, the speed reducer is positioned between the pneumatic motor and the clutch cylinder, the speed reducer is provided with an input shaft I, an input shaft II and an output shaft, and the input shaft I and the input shaft II are in transmission connection with the output shaft. The input shaft I is in transmission connection with the pneumatic motor, the output shaft is in transmission connection with a rolling shaft of the roller shutter door, a fluted disc is fixed to the input shaft II, a piston rod of the clutch air cylinder is provided with a hand-pull chain wheel through a bearing, the hand-pull chain wheel is provided with tooth grooves matched with transverse teeth of the fluted disc, the hand-pull chain wheel is sleeved with a chain, and the pneumatic control box is communicated with an air source. The clutch cylinder and the pneumatic motor are communicated with a pneumatic control box through air pipes, and the pneumatic control box controls the pneumatic motor to rotate forwards and backwards. Compared with the prior art, automatic switching from pneumatic control to manual control of the roller shutter door can be achieved, and the roller shutter door control device can be suitable for severe environments.

Description

Technical Field

[0001] This utility model pertains to roller shutter door equipment, specifically relating to a pneumatic drive mechanism for roller shutter doors. Background Technology

[0002] Roller shutters are doors consisting of multiple articulated door panels linked together, rotating up and down around a central axis within fixed tracks. They are typically installed in locations where walls are inconvenient for partitioning, serving as horizontal dividers. Conventional roller shutters use electric motors, which are often unsuitable for use in humid environments, limiting their application scenarios. For example, mines are characterized by dampness, confined spaces, and the presence of explosive gases; using electric controls in such environments poses significant safety risks due to the potential for electrical leakage and sparks.

[0003] To address the aforementioned issues, patent document CN214303613U discloses a pneumatic dust suppression roller shutter door for mining, which discloses that the roller shutter door is driven to open by a pneumatic motor. However, this solution relies on solenoid valves and sensors, requires some electricity, and cannot be operated when the power is off. Due to the presence of many electrical components, the system is also slightly complex. Utility Model Content

[0004] The purpose of this invention is to overcome the existing problems in controlling roller shutters in complex environments such as humid environments, enclosed spaces, and the presence of explosive gases, and to provide a pneumatic drive mechanism for manually or pneumatically controlling roller shutters.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a pneumatic motor mechanism for roller shutter doors, including a pneumatic motor, a reducer, a clutch cylinder, and a pneumatic control box. The reducer is located between the pneumatic motor and the clutch cylinder. The reducer has an input shaft I, an input shaft II, and an output shaft. Input shaft I and input shaft II are drivenly connected to the output shaft. Input shaft I is drivenly connected to the pneumatic motor, and the output shaft is drivenly connected to the roller shutter door's roller shaft. A gear plate is fixed on input shaft II, and a bearing is connected to the piston rod of the clutch cylinder. It is equipped with a hand-operated sprocket with tooth grooves that match the transverse teeth of the gear plate. A chain is fitted onto the hand-operated sprocket. The pneumatic control box is connected to the air source. The clutch cylinder and the pneumatic motor are connected to the pneumatic control box through air pipes. The pneumatic control box controls the forward and reverse rotation of the pneumatic motor. When the pneumatic control box supplies air to the clutch cylinder, the piston rod of the clutch cylinder retracts, and the hand-operated sprocket separates from the gear plate. When the pneumatic control box does not supply air to the clutch cylinder, the piston rod of the clutch cylinder returns to its original position and extends, and the hand-operated sprocket engages with the gear plate.

[0006] Optionally, a guide plate is provided below the hand zipper wheel, and a guide hole is provided on the guide plate. The hand zipper chain passes through the guide hole. When the hand zipper wheel meshes with the toothed disc, the guide plate is located directly below the hand zipper wheel.

[0007] Optionally, the hand sprocket is an inner-concave sprocket.

[0008] The utility model is used as follows: the pneumatic control box can control multiple sets of this mechanism, each mechanism corresponding to a roller shutter door. This mechanism is mainly used in places where there is no power supply but there is a compressed air source, as the driving mechanism of the roller shutter door.

[0009] The operating principle of this utility model is as follows: the output shaft is connected to the roller shaft of the roller shutter door, the pneumatic motor and the clutch cylinder are connected to the pneumatic control box through the air pipe, the pneumatic control box is connected to the air source, and the pneumatic control box controls the supply of compressed air. When compressed air is available, the pneumatic control box first supplies compressed air to the clutch cylinder. After receiving compressed air, the piston rod of the clutch cylinder retracts, and the hand-operated sprocket separates from the gear plate. Then, the pneumatic control box supplies compressed air to the pneumatic motor and controls its forward and reverse rotation. The power of the pneumatic motor is transmitted to the roller shutter door via the input shaft I and output shaft of the reducer, realizing the pneumatic opening and closing of the roller shutter door. When compressed air cannot be supplied, the piston rod of the clutch cylinder returns to its original position and extends, the hand-operated sprocket engages with the gear plate, and pulls the chain sleeved on the hand-operated sprocket. The hand-operated sprocket rotates, and the power is transmitted to the roller shutter door's roller shaft via the gear plate, the input shaft II and output shaft of the reducer, realizing the manual opening and closing of the roller shutter door. It should be emphasized that although the rotation of the output shaft will drive the input shaft I to rotate, and then drive the pneumatic motor to rotate through the input shaft I, causing the pneumatic motor to run idle or without load, the pneumatic motor will not be damaged by external power input. In summary, this device can achieve pneumatic control of the roller shutter door when compressed air is available, and can automatically switch to manual control when uncompressed air is unavailable. It can be used in humid environments with dripping water without the risk of electric leakage or sparks, ensuring safe operation.

[0010] Compared with the prior art, the present invention has at least the following advantages: the present invention can realize the automatic switching from pneumatic control to manual control of roller shutter doors, and can be applied to relatively harsh environments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] The components described in the attached diagram are labeled as follows: pneumatic motor 1, reducer 2, clutch cylinder 3, gear plate 4, hand sprocket 5, chain 6, guide plate 7. Detailed Implementation

[0013] Example 1, in conjunction with the following Figure 1Further description of this utility model: A pneumatic motor mechanism for a roller shutter door includes a pneumatic motor 1, a reducer 2, a clutch cylinder 3, and a pneumatic control box. The pneumatic motor, reducer, and clutch cylinder are integrated into a single unit via a frame. The reducer is located between the pneumatic motor and the clutch cylinder. This reducer serves as a speed reduction transmission device between the prime mover and the working machine, increasing output torque while reducing speed, thus facilitating the opening and closing of the roller shutter door. The reducer has an input shaft I, an input shaft II, and an output shaft. The input shaft I and input shaft II are connected to the output shaft. The input shaft I is connected to the pneumatic motor, and the output shaft is connected to the roller shutter door's roller shaft. A gear plate 4 is fixed on the input shaft II. A hand sprocket 5 is mounted on the piston rod of the clutch cylinder via a bearing. The hand sprocket is an inner-recessed sprocket with tooth grooves matching the transverse teeth of the gear plate. The transverse teeth are designed to be narrower on one side and wider on the other (such as a trapezoid or triangle), and are positioned at the connection point... The contact side is beveled, and the corresponding tooth groove adopts a matching gradually expanding design. This structure allows for a certain positional deviation during engagement. When the hand-operated sprocket moves towards the toothed disc, it can automatically slide into the engagement position. A chain 6 is sleeved on the hand-operated sprocket. The pneumatic control box is connected to the air source. The clutch cylinder and pneumatic motor are connected to the pneumatic control box through air pipes. Specifically, the clutch cylinder and the pneumatic control box are connected by one air pipe, and the pneumatic motor and the pneumatic control box are connected by two air pipes. The pneumatic control box is equipped with multiple pneumatic control valves, which are connected to the positive and negative ports of the pneumatic motor. The presence or absence of compressed air in each air pipe is controlled by the movement of the pneumatic control valves. The pneumatic control box controls the forward and reverse rotation of the pneumatic motor. When the pneumatic control box supplies air to the clutch cylinder, the piston rod of the clutch cylinder retracts, and the hand chain wheel separates from the gear plate. When the pneumatic control box does not supply air to the clutch cylinder, the piston rod of the clutch cylinder extends under the action of the return spring sleeved on it, and the hand chain wheel engages with the gear plate.

[0014] To prevent accidental rotation of the hand sprocket, a guide plate 7 is provided below the hand sprocket. The guide plate has a guide hole through which the hand chain passes. When the hand sprocket meshes with the toothed disc, the guide plate is located directly below the hand sprocket, and the guide plate and the hand sprocket are on the same axis, so the chain can smoothly pull the hand sprocket. However, when the hand sprocket separates from the toothed disc, the axes of the guide plate and the hand sprocket are misaligned, and the chain will be stuck by the guide plate, preventing the chain from smoothly pulling the hand sprocket.

[0015] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic motor mechanism for roller shutter doors, comprising a pneumatic motor (1), a reducer (2), a clutch cylinder (3), and a pneumatic control box, wherein the reducer is located between the pneumatic motor and the clutch cylinder, characterized in that: The reducer is equipped with input shaft I, input shaft II and output shaft. Input shaft I and input shaft II are connected to the output shaft for transmission. Input shaft I is connected to the pneumatic motor for transmission. The output shaft is connected to the roller of the roller shutter door for transmission. A gear plate (4) is fixed on input shaft II. A hand chain wheel (5) is provided on the piston rod of the clutch cylinder through a bearing. The hand chain wheel is provided with a tooth groove that matches the transverse teeth of the gear plate. A chain (6) is sleeved on the hand chain wheel. The pneumatic control box is connected to the air source. The clutch cylinder and the pneumatic motor are connected to the pneumatic control box through an air pipe. The pneumatic control box controls the forward and reverse rotation of the pneumatic motor. When the pneumatic control box supplies air to the clutch cylinder, the piston rod of the clutch cylinder retracts and the hand chain wheel separates from the gear plate. When the pneumatic control box does not supply air to the clutch cylinder, the piston rod of the clutch cylinder returns to its original position and extends, and the hand chain wheel meshes with the gear plate.

2. The air motor mechanism for a rolling door according to claim 1, characterized by: A guide plate (7) is provided below the hand zipper. The guide plate has a guide hole. The hand zipper passes through the guide hole. When the hand zipper meshes with the toothed disc, the guide plate is located directly below the hand zipper.

3. The air motor mechanism for a rolling door according to claim 1, characterized in that: The hand-operated sprocket is an internally recessed sprocket.

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