Flexible connection air door for mine

Abstract

The utility model relates to the technical field of mine air doors, in particular to a soft connection air door for a mine, which is characterized in that two air door leaves are arranged, the tops of the two air door leaves are respectively connected with a driving arm, and the driving arms are hinged with the same connecting rod; wherein one air door leaf is connected with the first rolling wheel assembly, the second rolling wheel assembly, the third rolling wheel assembly and the electric-hydraulic push rod assembly through steel wire ropes, and the other air door leaf is connected with the fourth rolling wheel assembly, the fifth rolling wheel assembly and the balance weight barrel through steel wire ropes. The utility model has the beneficial effects that the linkage of the air door and the electro-hydraulic push rod is realized through the steel wire rope, the roller component and the like, the dead angle when the air door is closed can be avoided, the air door is suitable for occasions needing frequent adjustment, and the loss of pinching personnel is reduced to the greatest extent by virtue of the counterweight device when the door is closed. The electric-hydraulic push rod assembly enables the automatic driving assembly to move downwards, and in addition, due to the arrangement of the flexible steel wire rope, when a power failure occurs, personnel can make a response very quickly and conveniently.

Description

Technical Field

[0001] This utility model relates to the field of mine ventilation door technology, and in particular to a flexible connection ventilation door for mines. Background Technology

[0002] Currently, mine ventilation doors are generally manual, with low automation. Automatic ventilation doors, typically using pneumatic or hydraulic cylinders, can exert excessive force, posing a risk of injury to personnel and vehicles. Such accidents are quite common in practical applications. Once an injury occurs, it is irreversible and can cause significant losses to both the company and the individual.

[0003] To address these issues, this application presents a flexible connecting air door for mines. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this utility model provides a flexible connection ventilation door for mines, including a door leaf, characterized in that:

[0005] The damper has two panels, and each panel has a drive arm connected to its top. The drive arms are hinged to the same connecting rod. One panel is connected to the first roller assembly, the second roller assembly, the third roller assembly, and the electro-hydraulic actuator assembly via a steel wire rope. The other panel is connected to the fourth roller assembly, the fifth roller assembly, and the counterweight bucket via a steel wire rope.

[0006] Furthermore, in order to better realize this utility model, a connecting seat is installed on one of the damper doors, and the connecting seat is connected to the wire rope of the electro-hydraulic actuator assembly; the drive arm of the other damper door has a connecting port, and a wire rope for connecting the counterweight barrel is threaded through the connecting port.

[0007] Furthermore, in order to better realize this utility model, the first roller assembly and the second roller assembly form a steering assembly, so that the wire rope connects the electro-hydraulic push rod assembly and the damper door; the fourth roller assembly and the fifth roller assembly form a steering assembly, so that the wire rope connects the counterweight bucket.

[0008] Furthermore, in order to better realize this utility model, the first roller assembly and the second roller assembly are mounted on the roller frame assembly, the roller frame assembly is fixed on the mounting profile, and the mounting profile is embedded in the tunnel; the fourth roller assembly and the fifth roller assembly are mounted on the roller frame assembly, the roller frame assembly is fixed on the mounting profile, and the mounting profile is embedded in the tunnel.

[0009] Furthermore, in order to better realize this utility model, the connector of the electro-hydraulic actuator assembly is fixedly connected to the third roller assembly. The third roller assembly moves together with the electro-hydraulic actuator and together with the steering assembly, forms a movable pulley group, which can increase the stroke and improve applicability, and also amplify the pulling force of the hydraulic actuator, saving costs. The electro-hydraulic actuator assembly is fixedly connected to the base, and the base is fixedly connected to the ground.

[0010] The beneficial effects of this utility model are:

[0011] The linkage between the damper and the electro-hydraulic actuator is achieved through steel wire ropes and roller assemblies, avoiding "dead zones" when the damper closes. This makes it suitable for applications requiring frequent adjustments. When closing, a counterweight device minimizes the risk of injury to personnel. The electro-hydraulic actuator assembly lowers the automatic drive components, and the flexible steel wire rope configuration allows for quick and easy response in the event of a power outage. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention;

[0013] Figure 2 This is a top view of the present invention.

[0014] In the picture,

[0015] 1. Connecting rod, 2. Drive arm, 3. Connecting seat, 4. First roller assembly, 5. Second roller assembly, 6. Third roller assembly, 7. Fourth roller assembly, 8. Fifth roller assembly, 9. Roller frame assembly, 10. Wire rope, 11. Electro-hydraulic actuator assembly, 12. Counterweight barrel, 13. Mechanical locking device. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] Figures 1-2 This is a specific embodiment of the present invention, which is a flexible connection air door for mines. The specific operating principle of this embodiment is as follows:

[0019] The automatic door operating system of this embodiment consists of components such as an electro-hydraulic actuator, a counterweight device, a control device, and a door leaf, which work together. The telescopic end of the electro-hydraulic actuator is hinged to the left door leaf through a linkage mechanism, and the counterweight device is integrated into the load-bearing pivot of the right door leaf.

[0020] During the door opening phase: After receiving the door opening command, the control device sends a retraction command to the electro-hydraulic actuator. At this time, the electro-hydraulic actuator generates an axial retraction force F1, which is amplified to 2F1 by the movable pulley system. This force simultaneously overcomes the following resistances: the downward gravitational torque M1 transmitted by the counterweight bucket through the wire rope, the dynamic friction force f when the door assembly rotates, and the reverse load P formed by external wind pressure. When 2F1 > (M1 + f + P), the electro-hydraulic actuator drives the left door to open clockwise and drives the right door to rotate synchronously through the synchronous linkage. The door opening angle θ changes linearly in the range of 0°-90°.

[0021] Closing Operation Phase: After receiving the closing command, the control device extends the electro-hydraulic actuator. The counterweight generates an auxiliary torque M2 through gravity compensation. When the extension thrust F2 of the electro-hydraulic actuator and M2 form a resultant force, this resultant force value is set as the safety threshold Fsafe, satisfying: Fsafe ≤ human tolerance threshold 45N (according to ISO 13849 standard). Under this constraint, the door assembly rotates in the reverse direction to close at a safe speed of 0.2-0.5m / s.

[0022] The key feature of this operating mechanism is that the separation of the dual functions of the electro-hydraulic actuator and the counterweight allows for high-power drive during the opening process, while the counterweight enables a flexible closing operation during the closing process. In particular, when encountering a human obstacle during the closing process, the counterweight's force limiting mechanism keeps the force below Fsafe, thus achieving a Class II safety protection level.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A mine soft connection air door, comprising an air door leaf, characterized in that: two air door leaves are provided, and the top of each air door leaf is connected with a driving arm (2), the driving arms (2) are hinged to the same connecting rod (1), one air door leaf is connected with a first roller assembly (4), a second roller assembly (5), a third roller assembly (6) and an electro-hydraulic push rod assembly (11) through a steel wire rope, and the other air door leaf is connected with a fourth roller assembly (7), a fifth roller assembly (8) and a counterweight barrel (13) through a steel wire rope.

2. The mine soft connection air door according to claim 1, characterized in that: one of the air door leaves is provided with a connecting seat (3), and the connecting seat (3) is connected with the steel wire rope (10) of the electro-hydraulic push rod assembly (11); the driving arm (2) of the other air door leaf is provided with a connecting port, and the connecting port is provided with the steel wire rope connected with the counterweight barrel (13).

3. The mine soft connection air door according to claim 1, characterized in that: the first roller assembly (4) and the second roller assembly (5) constitute a steering assembly, so that the steel wire rope (10) is connected with the electro-hydraulic push rod assembly (11) and the air door leaf; the fourth roller assembly (7) and the fifth roller assembly (8) constitute a steering assembly, so that the steel wire rope is connected with the counterweight barrel (13).

4. The mine soft connection air door according to claim 3, characterized in that: the first roller assembly (4) and the second roller assembly (5) are installed on a roller frame assembly (9), the roller frame assembly (9) is fixed on an installation profile, and the installation profile is pre-buried in the roadway; the fourth roller assembly (7) and the fifth roller assembly (8) are installed on the roller frame assembly (9), the roller frame assembly (9) is fixed on the installation profile, and the installation profile is pre-buried in the roadway.

5. The mine soft connection air door according to claim 1, characterized in that: the joint of the electro-hydraulic push rod assembly (11) is fixedly connected with the third roller assembly (6), the third roller assembly (6) moves with the electro-hydraulic push rod, and together with the steering assembly, constitutes a movable pulley group, which can not only increase the stroke and improve the applicability, but also can amplify the pulling force of the hydraulic push rod, save the cost, and the electro-hydraulic push rod assembly (11) is fixedly connected with the base, and the base is fixedly connected with the ground.

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