Single door page single ramp linkage system

Abstract

The utility model belongs to pneumatic control equipment technical field, concretely relates to a single door page single slope linkage system, including pneumatic slope subassembly and door page limiting unit, pneumatic slope subassembly sets up at the bottom of door page limiting unit, pneumatic slope subassembly external control box, control box is as the control unit of linkage between pneumatic slope subassembly and door page limiting unit, and the rotary handle valve is installed in control box, and the rotary handle valve adopts three position four -way structure, and the rotary handle valve has three -segment type control position, corresponds the medium position cut -off state, the lift position on -off state and the drop position on -off state respectively. The utility model uses, through the simple rotation of rotary handle valve control pneumatic slope's lifting, avoids the collision damage caused when door page is not opened to the in -place or misoperation, realizes the accurate control to pneumatic slope lifting, guarantees the safety and reliability of improved device.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic control equipment technology, specifically, it relates to a single door leaf single ramp linkage system. Background Technology

[0002] Traditional pneumatic ramp designs suffer from two main technical defects: firstly, insufficient mechanical coupling between the actuator and the door's opening and closing states, potentially leading to accidental triggering of the pneumatic ramp when the door is not fully open; secondly, the lack of a dynamic locking mechanism, failing to effectively prevent abnormal door closure after the ramp is raised. These design flaws stem from the insufficient timing control capabilities of early pneumatic control systems for multi-mechanism linkages, as well as the absence of protective measures at the mechanical structure level.

[0003] Existing technologies mostly use independent pneumatic actuators to drive ramp devices. Their control logic only considers the end-of-stroke detection of a single mechanism, neglecting the spatial correlation with the door's movement trajectory. When the ramp panel encounters a door that is not fully open during its lifting process, the lack of real-time position feedback and torque protection mechanisms can easily cause structural deformation or even damage to the power components. Furthermore, in the ramp-raised state, the mechanical limit devices of traditional devices cannot prevent the reverse movement of the door, leading to a risk of collision between metal components. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a single-door single-slope linkage system.

[0005] According to the present invention, a single door leaf single ramp linkage system includes a pneumatic ramp assembly and a door leaf limiting unit. The pneumatic ramp assembly is disposed at the bottom of the door leaf limiting unit. The pneumatic ramp assembly has an external control box, which serves as the control unit for linkage between the pneumatic ramp assembly and the door leaf limiting unit. A rotary handle valve is installed in the control box. The rotary handle valve adopts a three-position four-way structure and has three control positions, corresponding to the middle position cut-off state, the raised position on state, and the lowered position on state, respectively.

[0006] In a preferred embodiment, the pneumatic ramp assembly consists of an air source, a dual unit, a pneumatic control valve, and a cylinder.

[0007] In a preferred embodiment: the gas source is connected to the pneumatic control valve via a dual unit, which consists of a pressure regulating valve and a filter.

[0008] In a preferred embodiment: the cylinder lifting air passage is provided with a first one-way throttle valve, and the air passage for the pneumatic control valve to descend is equipped with a second one-way throttle valve and a third one-way throttle valve.

[0009] In a preferred embodiment: the two cylinders serve as the driving components for the lifting and lowering of the pneumatic ramp.

[0010] In a preferred embodiment: the door leaf limiting unit includes a door frame, a door leaf, a limiter, a first roller lever valve, a blocking cylinder, and a second roller lever valve.

[0011] In a preferred embodiment: a first roller lever valve is provided below the panel of the pneumatic ramp assembly. The first roller lever valve includes a bidirectional triggering mechanism, which is in a first triggering state when the panel of the pneumatic ramp assembly is fully raised and in a second triggering state when it is fully lowered.

[0012] In a preferred embodiment: the blocking cylinder is fixedly installed on the inner wall of the limiter above the door frame and the door leaf using a connecting plate, and the end of the piston rod of the blocking cylinder is connected to an adjustable stop rod, the extension direction of which is perpendicular to the opening and closing trajectory of the door leaf.

[0013] In a preferred embodiment: the second roller lever valve is fixed to the tail of the limiter by a connecting plate, and the trigger angle of the second roller lever valve is the mechanical limit position when the door is opened 90°-135°.

[0014] In a preferred embodiment: the bases of both the first roller lever valve and the second roller lever valve are provided with elongated holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] When in use, this utility model controls the raising and lowering of the pneumatic ramp by simply rotating a rotary handle valve, avoiding collision damage caused by the door not being fully opened or by misoperation, achieving precise control of the raising and lowering of the pneumatic ramp, and ensuring improved safety and reliability of the device. Attached Figure Description

[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] In the picture:

[0020] Detailed Implementation

[0021] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

[0022] like Figure 1 As shown, this utility model discloses a single door leaf single ramp linkage system, including a pneumatic ramp assembly and a door leaf limiting unit. The pneumatic ramp assembly is located at the bottom of the door leaf limiting unit. The pneumatic ramp assembly has an external control box, which serves as the control unit for linkage between the pneumatic ramp assembly and the door leaf limiting unit. A rotary handle valve 3 is installed inside the control box. The rotary handle valve 3 adopts a three-position four-way structure and has three control positions, corresponding to the middle position cut-off state, the raised position conduction state, and the lowered position conduction state, respectively.

[0023] The pneumatic ramp assembly consists of an air source 1, a dual unit 2, a pneumatic control valve 7, and cylinders 10. The air source 1 provides the pneumatic power for the entire system. The air source 1 is connected to the pneumatic control valve 7 through the dual unit 2. The dual unit 2 consists of a pressure regulating valve and a filter, which can regulate the air pressure to a constant state and filter the air. The pressure regulating valve adjusts the pressure to 0.6MPa, and the filter filtration accuracy is adjusted to 40μm. The pneumatic control valve 7 is used to switch the air passage of cylinder 10. The air passage of cylinder 10 when it rises is equipped with a first one-way throttle valve 8. The air passage of the pneumatic control valve 7 when it falls is equipped with a second one-way throttle valve 9 and a third one-way throttle valve 11. The two cylinders 10 serve as the driving components for the lifting and lowering of the pneumatic ramp, ensuring the synchronicity of the lifting and lowering process at both ends of the ramp, thereby controlling the lifting and lowering speed of cylinder 10. In conjunction with the third one-way throttle valve 11, the outflow of all cylinders 10 in the pneumatic ramp is controlled to ensure the smoothness of the lifting and lowering process.

[0024] The door leaf limiting unit includes a door frame, a door leaf, a limiter, a first roller lever valve 4, a blocking cylinder 5, and a second roller lever valve 6. The first roller lever valve 4 is located below the pneumatic ramp panel. The first roller lever valve 4 includes a bidirectional triggering mechanism, which is in a first triggering state when the pneumatic ramp panel is fully raised and in a second triggering state when it is fully lowered. The blocking cylinder 5 is fixedly installed on the inner wall of the limiter above the door frame and the door leaf using a connecting plate. An adjustable stop rod is connected to the end of the piston rod of the blocking cylinder 5, and the extension direction of the stop rod is the same as the opening and closing direction of the door leaf. The trajectory is vertical. After the pneumatic ramp panel is raised, the stop lever of the blocking cylinder 5 pops up to block the door leaf, limiting the door leaf to remain open. The second roller lever valve 6 is fixed to the tail of the limiter through the connecting plate. The triggering angle of the second roller lever valve 6 is the mechanical limit position when the door leaf is opened 125°. The triggering of the second roller lever valve 6 confirms that the door leaf is opened to the correct position. The bases of the first roller lever valve 4 and the second roller lever valve 6 are both provided with elongated holes, and the trigger stroke tolerance adjustment range is ±5mm, which is used to fine-tune the triggering angle.

[0025] Working principle

[0026] When using this utility model, a preset trigger angle needs to be set within the door leaf opening angle range (90 degrees to 135 degrees) according to the usage requirements. When the door leaf rotates to the preset opening and closing angle threshold, the roller lever valve 6 is triggered, and the rotary handle valve 3 is operated to the pneumatic ramp lifting end, that is, the lifting position conduction state. The pneumatic control valve 7 switches to the cylinder 10 lifting air passage, and the pneumatic ramp panel is lifted. This can effectively prevent the pneumatic ramp from being accidentally lifted when the door leaf is not opened or not opened to the full position, thereby preventing the panel from damaging the door leaf.

[0027] After the pneumatic ramp panel is raised, the first roller lever valve 4 is released and the first roller lever valve 4 is in the first triggered state. The stop lever of the blocking cylinder 5 pops up to block the door leaf and restrict the door leaf to remain in the open state. After the door leaf is opened to the position and the pneumatic ramp is raised, it can prevent the door leaf from being closed by accident and avoid the door leaf from colliding with the raised pneumatic ramp panel.

[0028] By operating the rotary handle valve 3 to the lowering end of the pneumatic ramp, i.e., the lowering position is open, the pneumatic control valve 7 switches to the lowering air passage of the cylinder 10, and the pneumatic ramp panel descends. After the pneumatic ramp panel descends to the correct position, the first roller lever valve 4 is retried and is in the second triggering state. The stop lever of the blocking cylinder 5 retracts, the door is released from the limit, and it can be closed normally. The raising and lowering of the pneumatic ramp can be easily and conveniently controlled by the rotary handle valve 3, improving the operating experience.

[0029] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

Claims

1. A single-door single-slope linkage system, characterized in that, It includes a pneumatic ramp assembly and a door leaf limiting unit. The pneumatic ramp assembly is located at the bottom of the door leaf limiting unit. The pneumatic ramp assembly has an external control box. The control box serves as the control unit for the linkage between the pneumatic ramp assembly and the door leaf limiting unit. A rotary handle valve (3) is installed in the control box. The rotary handle valve (3) adopts a three-position four-way structure. The rotary handle valve (3) has three control positions, which correspond to the middle position cut-off state, the raised position conduction state, and the lowered position conduction state, respectively.

2. The single-door single-slope linkage system according to claim 1, characterized in that, The pneumatic ramp assembly consists of an air source (1), a dual unit (2), a pneumatic control valve (7), and a cylinder (10).

3. The single-door single-slope linkage system according to claim 2, characterized in that, The gas source (1) is connected to the air control valve (7) through a dual unit (2), which consists of a pressure regulating valve and a filter.

4. The single-door single-slope linkage system according to claim 3, characterized in that, The cylinder (10) is equipped with a first one-way throttle valve (8) in the lifting air passage, and a second one-way throttle valve (9) and a third one-way throttle valve (11) are installed in the lowering air passage of the pneumatic control valve (7).

5. The single-door single-slope linkage system according to claim 4, characterized in that, The two cylinders (10) are used as driving components for the lifting and lowering of the pneumatic ramp.

6. The single-door single-slope linkage system according to claim 1, characterized in that, The door leaf limiting unit includes a door frame, a door leaf, a limiter, a first roller lever valve (4), a blocking cylinder (5), and a second roller lever valve (6).

7. The single-door single-slope linkage system according to claim 1, characterized in that, The pneumatic ramp assembly has a first roller lever valve (4) below its panel. The first roller lever valve (4) includes a bidirectional triggering mechanism. When the panel of the pneumatic ramp assembly is fully raised, it is in a first triggering state, and when it is fully lowered, it is in a second triggering state.

8. The single-door single-slope linkage system according to claim 6, characterized in that, The blocking cylinder (5) is fixedly installed on the inner wall of the limiter above the door frame and the door leaf using a connecting plate. The piston rod end of the blocking cylinder (5) is connected to an adjustable stop rod, and the extension direction of the stop rod is perpendicular to the opening and closing trajectory of the door leaf.

9. The single-door single-slope linkage system according to claim 6, characterized in that, The second roller lever valve (6) is fixed to the tail of the limiter by a connecting plate. The trigger angle of the second roller lever valve (6) is the mechanical limit position when the door is opened 90°-135°.

10. The single-door single-slope linkage system according to claim 9, characterized in that, The bases of the first roller lever valve (4) and the second roller lever valve (6) are both provided with elongated holes.

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