A tension damper and control method

Abstract

The present application relates to the technical field of mining equipment, and relates to a tensioning air door and a control method. The tensioning air door comprises an air door assembly, a first fixed pulley, a driving assembly, a force arm assembly, two ends of the force arm assembly being movably connected with the air door assembly, one end of a first steel wire section being connected with the driving assembly, the other end of the first steel wire section being connected with one end of a second steel wire section, the end of the second steel wire section away from the first steel wire section being wound around the first fixed pulley and being connected with the force arm assembly, one end of a first elastic module being movably connected with the driving assembly, the other end of the first elastic module being connected with the second steel wire section, in a contraction state, the air door assembly being closed, the first steel wire section being in a relaxed state, in a stretching state, the air door assembly being opened, the first steel wire section being in a taut state, the first elastic module being configured to provide a tensioning force to the second steel wire section when the first steel wire section is in the relaxed state. The problem of falling off and blocking with the first fixed pulley caused by the relaxation of the first steel wire unit is solved.

Description

Technical Field

[0001] This invention relates to the field of mining equipment technology, and more specifically, to a tensioning damper and its control method. Background Technology

[0002] Automatic airlocks, widely used in existing mine roadways, typically rely on cylinder-driven mechanisms to open and close via wire rope traction. In actual operation, due to design, installation, or maintenance reasons, the inherent stroke of the cylinder often exceeds the actual stroke required for the airlock to fully open. This difference results in a redundant length of wire rope on the drive side after the airlock closes, creating a significant slack section. This slack state triggers a series of chain problems: firstly, the slack wire rope is highly susceptible to detaching from the guide pulley groove in the cylinder housing; secondly, the internal torque accumulated in the wire rope during repeated lifting operations is released in the unrestrained slack state, causing the wire rope to rotate and twist. When the cylinder executes the pulling command again, the twisted wire rope has difficulty re-embedding smoothly and evenly into the rope groove of the guide pulley. It often falls off the pulley or gets stuck in the narrow space between the pulley and the side wall of the box, which causes severe wear, crushing or even breakage of the wire rope. This not only seriously affects the reliability and safety of the damper operation, but also greatly shortens the service life of the wire rope.

[0003] Therefore, how to solve the problem of wire rope slack causing derailment and jamming has become an urgent issue to be addressed. Summary of the Invention

[0004] To address the problem of detachment and jamming of the first fixed pulley caused by the slack of the first steel wire unit, this invention provides a tensioning damper and its control method.

[0005] In a first aspect, this embodiment provides a tensioning damper, comprising: Damper assembly; First fixed pulley; Driver components; The lever arm assembly has two ends that are movably connected to the damper assembly. The first wire unit includes a first wire segment and a second wire segment; one end of the first wire segment is connected to the drive assembly, and the other end is connected to one end of the second wire segment; the end of the second wire segment away from the first wire segment is wound around the first fixed pulley and connected to the lever arm assembly. The first tensioning unit includes a first elastic module; one end of the first elastic module is movably connected to the drive assembly, and the other end is located at the connection between the first steel wire segment and the second steel wire segment and connected to the second steel wire segment; wherein, the first elastic module includes a contracted state and a stretched state; in the contracted state, the damper assembly is closed and the first steel wire segment is in a relaxed state; in the stretched state, the damper assembly is open and the first steel wire segment is in a taut state; the first elastic module is configured to provide tension to the second steel wire segment when the first steel wire segment is in a relaxed state.

[0006] In some embodiments, the first tensioning unit further includes a first rotating module; the first rotating module is located between the drive assembly and the first wire segment; the first rotating module includes a first connecting rod and a first rotating ring and a second rotating ring respectively rotatably connected to the two ends of the first connecting rod; the first rotating ring is connected to the drive assembly; the second rotating ring is connected to the end of the first wire segment away from the second wire segment.

[0007] In some embodiments, the tensioning damper includes a tensioning assembly; the tensioning assembly includes a first tensioning unit and a second tensioning unit; the second tensioning unit includes a second elastic module and a second rotating module; the second wire segment includes a first wire section, a second wire section, and a third wire section arranged sequentially along the transmission direction of the first wire unit; one end of the first wire section is connected to the first wire segment, and the other end passes around a first fixed pulley and is connected to the second wire section; the end of the second wire section away from the first wire section is connected to the second rotating module; both ends of the third wire section are respectively connected to the second rotating module and the lever arm assembly; both ends of the second elastic module are respectively connected to the second rotating module and the second wire section; wherein, the second elastic module includes a contracted state and a stretched state; in the contracted state, the damper assembly is closed, and the second wire section is in a relaxed state; in the stretched state, the damper assembly is open, and the second wire section is in a taut state; the second elastic module is configured to provide tension to the first wire section when the second wire section is in a relaxed state.

[0008] In some embodiments, the second rotating module includes a second connecting rod and a third rotating ring and a fourth rotating ring movably connected to both ends of the second connecting rod, respectively; the fourth rotating ring is connected to the second wire section; the third rotating ring is connected to the lever arm assembly; wherein, the two ends of the second elastic module are respectively connected to the third rotating ring and the second wire section.

[0009] In some embodiments, the first elastic module and the second elastic module are spiraled several times to form a spiral spring shape; the minimum pitch of the first elastic module is greater than the minimum pitch of the second elastic module.

[0010] In some embodiments, the damper assembly includes a first damper and a second damper; the two ends of the lever arm assembly are respectively movably connected to the first damper and the second damper.

[0011] In some embodiments, the lever arm assembly includes a third lever arm unit and a first lever arm unit and a second lever arm unit respectively movably connected to the third lever arm unit; the first lever arm unit includes a first connecting arm and a second connecting arm; the first connecting arm is connected to a first damper, and the two ends of the second connecting arm are respectively connected to the first connecting arm and the third lever arm unit; the second lever arm unit includes a third connecting arm and a fourth connecting arm; the third connecting arm is connected to a second damper, and the two ends of the fourth connecting arm are respectively connected to the third connecting arm and the third lever arm unit; a third wire section is connected to the second connecting arm.

[0012] In some embodiments, one end of the second connecting arm is fixedly connected to the first connecting arm, and the other end is movably connected to the third lever arm unit; one end of the fourth connecting arm is fixedly connected to the third connecting arm, and the other end is movably connected to the third lever arm unit.

[0013] In some embodiments, it also includes: Counterweight components; The second fixed pulley is located on the coal mine wall near the second ventilation door; The second wire unit is wound around the second fixed pulley, and the two ends of the second wire unit are respectively connected to the fourth connecting arm and the counterweight assembly.

[0014] Secondly, this embodiment provides a control method for a tension damper. This control method is applied to the tension damper in any of the above embodiments. The control method for the tension damper includes: In response to the opening signal of the damper assembly, the drive assembly retracts the first steel wire segment and transmits power to the second steel wire segment and the lever arm assembly to open the damper assembly; wherein, the first elastic module is in a stretched state and the first steel wire segment is in a taut state. In response to the closing signal of the damper assembly, the drive assembly releases the first steel wire segment and transmits power to the second steel wire segment and the lever arm assembly to close the damper assembly; wherein, the first elastic module changes from a stretched state to a relaxed state, and the first steel wire segment changes from a taut state to a relaxed state.

[0015] To solve the problem of detachment and jamming from the first fixed pulley caused by the slack of the first steel wire unit, the present invention has the following advantages: The first steel wire unit is divided into a first steel wire segment and a second steel wire segment. A first elastic module, linked to the drive assembly, is installed at their connection point. Utilizing the displacement of the drive assembly during the closing of the damper assembly, the first elastic module is driven from a stretched state to a contracted state. That is, when the damper assembly closes, the drive assembly extends, and the first steel wire segment enters a relaxed state. The first elastic module, in its contracted state, can precisely apply a continuous dynamic tension force to the second steel wire segment, ensuring that the relaxed segment in related technologies does not affect the fit between the first steel wire unit and the first fixed pulley. The first elastic module can automatically and in real time compensate for any potential relaxation caused by the extension of the first steel wire unit, structural vibration, or pressure fluctuations in the drive assembly, fundamentally ensuring the fit of the first steel wire unit on the first fixed pulley. This eliminates the risk of the first steel wire unit detaching or jamming from the first fixed pulley. Simultaneously, the first elastic module can significantly improve the smoothness of the transmission process and the service life of the first steel wire unit and the first fixed pulley by absorbing motion impact and balancing the load. Attached Figure Description

[0016] Figure 1 A schematic diagram of the closing structure of a tension damper according to one embodiment is shown; Figure 2 Another structural schematic diagram of the tension damper closing structure of one embodiment is shown; Figure 3 A schematic diagram of the opening structure of a tension damper according to one embodiment is shown.

[0017] Figure label: 10. Drive assembly; 11. Cylinder unit; 12. Piston unit; 20. Wire rope assembly; 21. First wire unit; 211. First wire segment; 212. Second wire segment; 2121. First wire joint; 2122. Second wire joint; 2123. Third wire joint; 22. Second wire unit; 30. Tensioning assembly; 31. First tensioning unit; 311. First elastic module; 312. First rotating module; 3121. First rotating ring; 3122. Second rotating ring; 3123. First connecting rod; 32. Second tensioning unit; 3 21. Second elastic module; 322. Second rotating module; 3221. Third rotating ring; 3222. Fourth rotating ring; 3223. Second connecting rod; 40. Guide assembly; 41. First fixed pulley; 42. Second fixed pulley; 50. Lever arm assembly; 51. First lever arm unit; 511. First connecting arm; 512. Second connecting arm; 52. Second lever arm unit; 521. Third connecting arm; 522. Fourth connecting arm; 53. Third lever arm unit; 60. Damper assembly; 61. First damper; 62. Second damper; 70. Counterweight assembly. Detailed Implementation

[0018] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0019] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0020] In automatic ventilation doors in mine roadways, a common driving method is to use a cylinder to pull the door via a wire rope. Typically, the cylinder's inherent stroke is greater than the actual required stroke of the door, causing a slack section in the wire rope on the drive side after the door closes. This leads to two problems: first, the wire rope is very prone to slipping out of the guide pulley's groove; second, the torque accumulated inside the wire rope, released without tension constraint, causes it to rotate and twist, making it unable to return to its original position when the cylinder pulls it again, thus getting stuck between the pulley and the housing. These problems not only cause severe wear and damage to the wire rope but also seriously threaten the reliability and safety of the ventilation door's operation.

[0021] Example 1 Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a tensioning damper, including: The air door assembly 60 is used to control the mine airflow by opening or closing, ensuring the stable operation of the ventilation system, and at the same time ensuring the safe passage of personnel and vehicles in roadways where passage is required; wherein, the air door assembly 60 is installed on the door frame reserved in the coal mine wall.

[0022] The lever arm assembly 50 has two ends that are movably connected to the damper assembly 60. By applying force to the lever arm assembly 50, the lever arm assembly 50 pushes the damper assembly 60 to open or close.

[0023] The first fixed pulley 41 is fixedly installed on the coal mine wall. The first fixed pulley 41 includes a pulley and a rope groove (not shown). The first fixed pulley 41 provides a guide and load-bearing fulcrum for the first steel wire unit 21 wound on the first fixed pulley 41. The first fixed pulley 41 converts sliding friction into rolling friction, which not only significantly reduces the wear of the first steel wire unit 21 and extends its service life, but also improves the transmission efficiency of the first steel wire unit 21 and the working efficiency of the drive assembly 10. In addition, the first fixed pulley 41 also ensures that the tension force generated by the first tensioning unit 31 can be accurately and controllably transmitted to the first steel wire unit 21. The first fixed pulley 41 and the tensioning assembly 30 work together to ensure the smoothness and reliability of the damper assembly 60 during the opening or closing process.

[0024] Drive assembly 10 includes cylinder unit 11 and piston unit 12 disposed within cylinder unit 11; cylinder unit 11 is fixedly disposed in the coal mine wall; wherein, piston unit 12 performs extension or retraction movements perpendicular to the ground within cylinder unit 11. (Please refer to...) Figure 3 That is, when the damper assembly 60 needs to be opened, the piston unit 12 retracts in a direction perpendicular to the ground and tightens the first wire unit 21, which pulls the power arm assembly 50 to open the damper; please refer to Figure 2 When the damper assembly 60 needs to be closed, the piston unit 12 extends from the cylinder unit 11 and releases the first wire unit 21.

[0025] The first wire unit 21 includes an integrally formed first wire segment 211 and a second wire segment 212. One end of the first wire segment 211 is connected to the piston unit 12 of the drive assembly 10. The piston unit 12 controls the overall tightening or releasing of the first wire unit 21 by contracting or tightening the cylinder unit 11. The other end is connected to one end of the second wire segment 212. The end of the second wire segment 212 away from the first wire segment 211 is wound around the first fixed pulley 41 and connected to the lever arm assembly 50, which works with the lever arm assembly 50 to control the opening or closing of the damper assembly 60. Based on the first fixed pulley 41, a guide and load-bearing fulcrum is provided for the second wire segment 212, reducing the overall wear of the first wire unit 21.

[0026] The first tensioning unit 31 includes a first elastic module 311; one end of the first elastic module 311 is movably connected to the drive assembly 10, and the other end is located at the connection between the first steel wire segment 211 and the second steel wire segment 212 and connected to the second steel wire segment 212; wherein, the first elastic module 311 includes a contracted state and a stretched state; in the contracted state, the damper assembly 60 is closed and the first steel wire segment 211 is in a relaxed state; in the stretched state, the damper assembly 60 is open and the first steel wire segment 211 is in a taut state; the first elastic module 311 is configured to provide tension to the second steel wire segment 212 when the first steel wire segment 211 is in a relaxed state.

[0027] Understandably, since the inherent stroke of the drive assembly 10 is often greater than the actual required stroke of the damper, the first wire segment 211 will form a slack segment after the damper assembly 60 is closed. In this embodiment, the first elastic module 311 converts the excess stroke of the piston unit 12 when the damper is closed into the contraction deformation of the first elastic module 311. That is, when the first elastic module 311 is in the contraction state, the first steel wire segment 211 is in the relaxed state. The relaxed first steel wire segment 211 is stretched by the contraction of the first elastic module 311 and is located between the first elastic modules 311, so that the relaxed segment will not extend to the second steel wire segment 212 that contacts the first fixed pulley 41, thereby causing the second steel wire segment 212 to fall off. The end of the first elastic module 311 near the first fixed pulley 41 provides tension to the second steel wire segment 212, ensuring that the part that contacts the first fixed pulley 41 is in close contact. This realizes dynamic and adaptive tensioning of the first steel wire unit 21, which can accurately compensate for the relaxation of the first steel wire unit 21, avoid the problem of dislodging due to the relaxation of the first steel wire unit 21, and improve the stability of the overall transmission process.

[0028] In this embodiment, the first tensioning unit 31 further includes a first rotation module 312, which is used to release the torsional stress generated by the movement of the first wire unit 21. That is, the first rotation module 312 absorbs and dissipates the rotational potential energy accumulated by the first wire unit 21 during cyclic tensioning and releasing, preventing it from rotating and twisting due to the release of torque in the relaxed state. This can solve the problem of secondary jamming caused by the twisted first wire unit 21 being difficult to return to its original position when tensioned again.

[0029] The first rotating module 312 is located between the drive assembly 10 and the first steel wire segment 211. The first rotating module 312 includes a first connecting rod 3123 and a first rotating ring 3121 and a second rotating ring 3122 respectively rotatably connected to the two ends of the first connecting rod 3123. The first rotating ring 3121 is connected to the drive assembly 10. The second rotating ring 3122 is connected to the end of the first steel wire segment 211 away from the second steel wire segment 212. The first rotating module 312 constitutes a structure that can rotate freely around its own axis.

[0030] Understandably, during the cyclic operation of opening and closing the damper assembly 60, the repeated friction between the second wire segment 212 and the first fixed pulley 41 generates rotational potential energy. When the damper assembly 60 closes and the first wire segment 211 tends to relax, this rotational potential energy is suddenly released without external tension constraint, causing the first wire unit 21 to rotate and twist. Therefore, the first rotation module 312 in this embodiment is used to release the rotational potential energy generated by the movement of the first wire unit 21. When torque attempts to drive the first wire unit 21 to twist, the torque is directly transmitted to the second rotating ring 3122 and converted into the rotational motion of the first rotation module 312 around its axis. This ensures that even when the first wire unit 21 is in a relaxed state, it can maintain a relatively straight and stable shape without twisting, thereby solving the problem that the torque accumulated inside the first wire unit 21 causes it to be unable to return to its original position smoothly when pulled again.

[0031] In this embodiment, the tensioning damper includes a tensioning assembly 30; the tensioning assembly 30 includes a first tensioning unit 31 and a second tensioning unit 32. The second tensioning unit 32 includes a second elastic module 321 and a second rotating module 322; the second wire segment 212 includes a first wire section 2121, a second wire section 2122, and a third wire section 2123 arranged sequentially along the transmission direction of the first wire unit 21, wherein the first wire section 2121 and the second wire section 2122 are integrally formed, and the second wire section 2122 and the third wire section 2123 are spaced apart; one end of the first wire section 2121 is connected to the first wire segment 211, and the other end passes around the first fixed pulley 41 and is connected to the second wire section 2122; the end of the second wire section 2122 away from the first wire section 2121 is connected to the second... The rotating module 322 is connected; the two ends of the third wire section 2123 are respectively connected to the second rotating module 322 and the lever arm assembly 50; the two ends of the second elastic module 321 are respectively connected to the second rotating module 322 and the second wire section 2122; wherein, the second elastic module 321 includes a contracted state and a stretched state; in the contracted state, the damper assembly 60 is closed and the second wire section 2122 is in a relaxed state; in the stretched state, the damper assembly 60 is open and the second wire section 2122 is in a taut state; the second elastic module 321 is configured to provide tension to the first wire section 2121 when the second wire section 2122 is in a relaxed state.

[0032] Specifically, by setting a second tensioning unit 32, a tensioning system that works in conjunction with the first tensioning unit 31 is constructed. The first tensioning unit 31 can be used to overcome the inherent stroke redundancy of the piston unit 12, and the second tensioning unit 32 can be used to suppress the instantaneous slack on the lever arm side caused by inertia and vibration during the opening and closing of the damper assembly 60. Furthermore, it avoids the problem of the first wire segment 2121 not making proper contact with the first fixed pulley 41 when the first wire segment 211 is in a slack state and its slack bending section gets stuck between the pitches of the first elastic module 311 as it is continuously stretched. The second wire segment 2122 located between the two ends of the second elastic module 321 will droop due to gravity, and there is no problem of the second wire segment 2122 located between the two ends of the second elastic module 321 getting stuck between the pitches of the second elastic module 321. Therefore, the two work together to ensure that the entire first wire unit 21 from the piston unit 12 to the connection point of the lever arm assembly 50 can maintain a tension force sufficient for safe transmission under any working condition. This not only prevents derailment and conventional jamming, but also eliminates the risk of interference and jamming between the first wire segment 211 and the first elastic module 311.

[0033] In this embodiment, the second rotating module 322 includes a second connecting rod 3223 and a third rotating ring 3221 and a fourth rotating ring 3222 respectively movably connected to both ends of the second connecting rod 3223; the fourth rotating ring 3222 is connected to the second wire section 2122; the third rotating ring 3221 is connected to the lever arm assembly 50; wherein, the two ends of the second elastic module 321 are respectively connected to the third rotating ring 3221 and the second wire section 2122.

[0034] Understandably, by connecting the second elastic module 321 between the third rotating ring 3221 of the second rotating module 322 and the first steel wire segment 211, the elastic potential energy of the second elastic module 321 is more efficiently converted into radial tension force on the first steel wire segment 211 and the second steel wire segment 212. This not only amplifies the tensioning effect but also ensures that the second rotating module 322 can continuously resolve the torsional tendency of the first steel wire segment 211 and the second steel wire segment 212 when the damper is in operation. This tightly couples the anti-loosening and anti-rotation functions, maximizing their synergistic effect.

[0035] In this embodiment, the first elastic module 311 and the second elastic module 321 are spiraled several times to form a spiral spring shape; the minimum pitch of the first elastic module 311 is greater than the minimum pitch of the second elastic module 321, and the minimum pitch of the first elastic module 311 is less than the maximum diameter of the first wire unit 21.

[0036] It is understandable that the first elastic module 311 and the second elastic module 321 may be springs, but are not limited to this; the specific application shall prevail. For the first elastic module 311, which is vertically installed and has a very high risk of jamming, a larger minimum pitch is set to provide a greater safety margin, ensuring sufficient safety distance between the first elastic module 311 and the first steel wire segment 211, eliminating the possibility of jamming. For the second elastic module 321, which is horizontally installed and has a lower risk of jamming, since the second steel wire segment 2122 will not get stuck in the second elastic module 321 due to gravity, a smaller pitch is used to achieve higher stiffness and faster response speed while ensuring basic safety, thus providing micro-compensation for the movement of the damper assembly 60.

[0037] In this embodiment, the damper assembly 60 includes a first damper 61 and a second damper 62; the two ends of the lever arm assembly 50 are movably connected to the first damper 61 and the second damper 62, respectively.

[0038] Specifically, the anti-rotation tensioning system is applied to a double-door type, with the first door 61 and the second door 62 opening in opposite directions. For example, when the first door 61 opens inward, the second door 62 can open outward. This solves the problem that the wire rope assembly 20 is more prone to asymmetrical slack and jamming in scenarios where such doors are subjected to bidirectional force and have high synchronization requirements, ensuring that the wire rope tension of the first door 61 and the second door 62 is always balanced and consistent during the opening and closing process.

[0039] In this embodiment, the lever arm assembly 50 includes a third lever arm unit 53 and a first lever arm unit 51 and a second lever arm unit 52, which are movably connected to the third lever arm unit 53. The first lever arm unit 51 includes a first connecting arm 511 and a second connecting arm 512. The first connecting arm 511 is connected to the first damper 61, and the two ends of the second connecting arm 512 are connected to the first connecting arm 511 and the third lever arm unit 53, respectively. The second lever arm unit 52 includes a third connecting arm 521 and a fourth connecting arm 522. The third connecting arm 521 is connected to the second damper 62, and the two ends of the fourth connecting arm 522 are connected to the third connecting arm 521 and the third lever arm unit 53, respectively. The third wire section 2123 is connected to the second connecting arm 512.

[0040] In this embodiment, one end of the second connecting arm 512 is fixedly connected to the first connecting arm 511, and the other end is movably connected to the third lever arm unit 53; one end of the fourth connecting arm 522 is fixedly connected to the third connecting arm 521, and the other end is movably connected to the third lever arm unit 53.

[0041] Specifically, the linear motion of the damper is transformed into an optimized mechanical trajectory through a composite linkage mechanism consisting of the first and second lever arm units 52 and the third lever arm unit 53. This movable lever arm assembly 50 not only transmits power efficiently, but its inherent motion redundancy can also adapt to slight deformations or installation deviations of the tunnel wall, avoiding interference from structural stress on the tension state of the wire rope assembly 20. It complements the tensioning assembly 30, jointly ensuring stability during long-term operation.

[0042] In this embodiment, a tension damper further includes: Counterweight component 70.

[0043] The second fixed pulley 42 is located on the coal mine wall near the second air door 62. The second fixed pulley 42 includes a pulley and a rope groove (not shown in the figure). The rope groove is used to place the second wire unit 22.

[0044] The second wire unit 22 is wound around the second fixed pulley 42 and its two ends are respectively connected to the fourth connecting arm 522 and the counterweight assembly 70.

[0045] Specifically, the guide assembly 40 includes a first fixed pulley 41 and a second fixed pulley 42, and the wire rope assembly 20 includes a first wire unit 21 and a second wire unit 22. When the damper assembly 60 needs to be closed, the piston unit 12 extends and releases the first wire unit 21, and the counterweight assembly 70 pulls down the second wire unit 22. The second wire unit 22 drives the power arm assembly 50 to close the damper assembly 60. That is, by independently setting a counterweight system for the second damper 62, the torque self-balancing of the two dampers is achieved by using gravitational potential energy for balance. This reduces the static resistance that the drive assembly 10 needs to overcome when opening the damper assembly 60, which not only saves energy but also significantly reduces the impact load borne by the wire rope assembly 20 and the tensioning assembly 30 at the moment of start-up.

[0046] Example 2 This embodiment provides a control method for a tension damper. This control method is applied to the tension damper in any embodiment of Embodiment 1. The control method for the tension damper includes: In response to the opening signal of the damper assembly 60, the drive assembly 10 retracts the first steel wire segment 211 and transmits power to the second steel wire segment 212 and the lever arm assembly 50 to open the damper assembly 60; wherein, the first elastic module 311 is in a stretched state and the first steel wire segment 211 is in a taut state.

[0047] In response to the closing signal of the damper assembly 60, the drive assembly 10 releases the first steel wire segment 211 and transmits power to the second steel wire segment 212 and the lever assembly 50 to close the damper assembly 60; wherein, the first elastic module 311 changes from a stretched state to a relaxed state, and the first steel wire segment 211 changes from a taut state to a relaxed state.

[0048] That's understandable, please refer to it. Figure 2 When the drive assembly 10 receives the closing command, the piston unit 12 performs a retraction action during the damper closing process. At this time, the damper assembly 60 begins to close under its own weight or the counterweight assembly 70, and pulls the second wire rope unit 22 in the opposite direction through the lever arm assembly 50. During this process, the retraction stroke of the piston unit 12 is greater than the actual requirement of the damper assembly 60. The excess stroke is absorbed by the first tensioning unit 31, driving the first elastic module 311 into and maintaining an energy-storing contracted state, thereby applying a continuous and adaptive dynamic tension force to the first wire rope unit 21 leading to the first fixed pulley 41. At the same time, the inertia and vibration of the closing damper assembly 60 also trigger the second tensioning unit 32 to work, and the second elastic module 321 provides instantaneous compensation tension. This dual mechanism ensures that the wire rope assembly 20 is in a taut state throughout the closing process, which is prone to slack, effectively preventing derailment caused by slack and kinking of the wire rope itself caused by unrestrained torque release, ultimately achieving the closure of the damper assembly 60.

[0049] Further, please refer to Figure 3 When the drive assembly 10 receives the opening command, its piston unit 12 extends outward, driving the first tensioning unit 31 and the first steel wire unit 21 to move. This traction force, after being redirected by the first fixed pulley 41 fixed to the wall, is transmitted to the lever arm assembly 50, thereby overcoming the weight of the damper and frictional resistance, and driving the damper assembly 60 to perform the opening action. During this process, the tension acting on the steel wire rope assembly 20 is maintained, ensuring that both the first elastic module 311 and the second elastic module 321 are in a stretched and stable state. The stored potential energy is gradually released, assisting the drive on one hand and continuously absorbing system vibration on the other, ensuring that the second steel wire segment 212 remains tightly fitted to the first fixed pulley 41, preventing any tendency to detach or jam due to inertial relaxation during the acceleration and start-up phase, thus ensuring a smooth and stable opening action.

[0050] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A tension damper, characterized in that, include: Damper assembly; First fixed pulley; Driver components; A lever arm assembly, the two ends of which are movably connected to the damper assembly; The first wire unit includes a first wire segment and a second wire segment; one end of the first wire segment is connected to the drive assembly, and the other end is connected to one end of the second wire segment; the end of the second wire segment away from the first wire segment is wound around the first fixed pulley and connected to the lever arm assembly; The first tensioning unit includes a first elastic module; one end of the first elastic module is movably connected to the drive assembly, and the other end is located at the connection between the first steel wire segment and the second steel wire segment and connected to the second steel wire segment; wherein, the first elastic module includes a contracted state and a stretched state; in the contracted state, the damper assembly is closed and the first steel wire segment is in a relaxed state; in the stretched state, the damper assembly is open and the first steel wire segment is in a taut state; the first elastic module is configured to provide tension to the second steel wire segment when the first steel wire segment is in a relaxed state.

2. A tension damper according to claim 1, characterized in that, The first tensioning unit further includes a first rotating module; the first rotating module is located between the drive assembly and the first steel wire segment; the first rotating module includes a first connecting rod and a first rotating ring and a second rotating ring respectively rotatably connected to both ends of the first connecting rod; the first rotating ring is connected to the drive assembly; the second rotating ring is connected to the end of the first steel wire segment away from the second steel wire segment.

3. A tension damper according to claim 2, characterized in that, The tensioning damper includes a tensioning assembly; the tensioning assembly includes a first tensioning unit and a second tensioning unit; the second tensioning unit includes a second elastic module and a second rotating module; the second wire segment includes a first wire section, a second wire section, and a third wire section arranged sequentially along the transmission direction of the first wire unit; one end of the first wire section is connected to the first wire segment, and the other end passes around the first fixed pulley and is connected to the second wire section; the end of the second wire section away from the first wire section is connected to the second rotating module; both ends of the third wire section are respectively connected to the second rotating module and the lever arm assembly; both ends of the second elastic module are respectively connected to the second rotating module and the second wire section; wherein, the second elastic module includes a contracted state and a stretched state; in the contracted state, the damper assembly is closed, and the second wire section is in a relaxed state; in the stretched state, the damper assembly is open, and the second wire section is in a taut state; the second elastic module is configured to provide tension to the first wire section when the second wire section is in a relaxed state.

4. A tension damper according to claim 3, characterized in that, The second rotating module includes a second connecting rod and a third rotating ring and a fourth rotating ring movably connected to both ends of the second connecting rod, respectively; the fourth rotating ring is connected to the second wire section; the third rotating ring is connected to the lever arm assembly; wherein, both ends of the second elastic module are connected to the third rotating ring and the second wire section, respectively.

5. A tension damper according to claim 4, characterized in that, The first elastic module and the second elastic module are spiraled several times to form a spiral spring shape; the minimum pitch of the first elastic module is greater than the minimum pitch of the second elastic module.

6. A tension damper according to claim 3, characterized in that, The damper assembly includes a first damper and a second damper; the two ends of the lever assembly are respectively movably connected to the first damper and the second damper.

7. A tension damper according to claim 6, characterized in that, The lever arm assembly includes a third lever arm unit and a first lever arm unit and a second lever arm unit respectively movably connected to the third lever arm unit; the first lever arm unit includes a first connecting arm and a second connecting arm; the first connecting arm is connected to the first damper, and the two ends of the second connecting arm are respectively connected to the first connecting arm and the third lever arm unit; the second lever arm unit includes a third connecting arm and a fourth connecting arm; the third connecting arm is connected to the second damper, and the two ends of the fourth connecting arm are respectively connected to the third connecting arm and the third lever arm unit; the third wire section is connected to the second connecting arm.

8. A tension damper according to claim 7, characterized in that, One end of the second connecting arm is fixedly connected to the first connecting arm, and the other end is movably connected to the third lever arm unit; one end of the fourth connecting arm is fixedly connected to the third connecting arm, and the other end is movably connected to the third lever arm unit.

9. A tension damper according to claim 7, characterized in that, Counterweight components; The second fixed pulley is located on the coal mine wall near the second air door; The second wire unit is wound around the second fixed pulley, and both ends of the second wire unit are respectively connected to the fourth connecting arm and the counterweight assembly.

10. A method for controlling a tension damper, characterized in that, The control method for the tensioning damper is applied to the tensioning damper according to any one of claims 1-9, and the control method for the tensioning damper includes: In response to the opening signal of the damper assembly, the drive assembly retracts the first steel wire segment and transmits power to the second steel wire segment and the lever arm assembly to open the damper assembly; wherein, the first elastic module is in a stretched state and the first steel wire segment is in a taut state; In response to a closing signal from the damper assembly, the drive assembly releases the first wire segment and transmits power to the second wire segment and the lever assembly to close the damper assembly; wherein the first elastic module changes from a stretched state to a relaxed state, and the first wire segment changes from a taut state to a relaxed state.

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