Air door device

Abstract

The invention provides an air door device. The air door device comprises a door frame, a door leaf, a base and a doorsill, the door frame surrounds to form a door opening, the door leaf is connected with the door frame and can pivot between a closing position for closing the door opening and an opening position for opening the door opening, the base is arranged below the door frame, an interval space is arranged between the base and the door leaf located at the closing position, and the doorsill is connected with the base. The doorsill is arranged on the base and can move between the extending position extending into the interval space and the retracting position retracting into the base, a rail groove is formed in the top face of the doorsill, the rail groove penetrates through the doorsill in the thickness direction of the doorsill, and the rail groove is used for allowing a rail to penetrate through the doorsill. According to the air door device, when the door leaf is located at the closing position, the threshold extends out of the base, the track penetrates through the track groove to block the interval space between the door leaf and the base, and therefore the sealing performance of the air door device is ensured; therefore, operation equipment such as a rail car passing through the door opening is prevented from being blocked.

Description

Technical Field

[0001] The present invention relates to the field of mine equipment, and in particular to a damper device. Background Art

[0002] Pressure-free dampers are key components of underground coal mine ventilation systems, used to balance air pressure and isolate airflow. They are primarily installed in intake and return air lanes and connecting lanes. In related technologies, a gap of a certain height is created between the bottom of the pressure-free damper and the roadway floor to allow for rails to pass through. However, this gap compromises the airtightness of the pressure-free damper. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a damper device.

[0005] The damper device according to the embodiment of the present invention comprises:

[0006] a door frame, the door frame surrounding and forming a door opening;

[0007] a door leaf connected to the door frame and capable of pivoting between a closed position for closing the door opening and an open position for opening the door opening;

[0008] A base, the base being arranged below the door frame, with a spacing space being provided between the base and the door leaf in the closed position;

[0009] A threshold is connected to the base and can move between an extended position extending into the interval space and a retracted position retracted into the base. A track groove is provided on the top surface of the threshold, and the track groove penetrates the threshold along the thickness direction of the threshold. The track groove is used for the track to pass through the threshold.

[0010] The damper device of the embodiment of the present invention is such that when the door leaf is in the closed position closing the door opening, the threshold extends from the base to the extended position, and the track passes through the track groove to block the interval space between the door leaf and the base, thereby ensuring the sealing of the damper device; when the door leaf is in the open position opening the door opening, the threshold retracts from the base to the retracted position to avoid blocking operating equipment such as rail vehicles passing through the door opening.

[0011] In some embodiments, when the door leaf pivots from the closed position to the open position, the threshold moves from the extended position to the retracted position, and when the door leaf pivots from the open position to the closed position, the threshold moves from the retracted position to the extended position.

[0012] In some embodiments, the damper device further includes a linkage mechanism, wherein the linkage mechanism is connected between the door leaf and the threshold. When the door leaf pivots from the open position to the closed position, the threshold is driven by the linkage mechanism to move from the retracted position to the extended position. When the door leaf pivots from the closed position to the open position, the linkage mechanism is reset, and the threshold drops from the extended position to the retracted position.

[0013] In some embodiments, the base includes a main body and an extension portion, the extension portion is provided at an end of the main body and extends along a pivoting trajectory of the door leaf, and the main body is connected to the threshold;

[0014] The linkage mechanism includes a slider and a linkage member. The slider is connected to the extension portion and can be moved in a vertical direction relative to the extension portion. The slider extends along the pivot trajectory of the door leaf. The top surface of the slider is inclined from top to bottom from one end adjacent to the main body to the other end away from the main body. The door leaf is abutted against the top surface of the slider and can be moved along the pivot trajectory of the door leaf relative to the top surface of the slider. The linkage member is connected between one end of the slider and the threshold and causes the slider and the threshold to move in opposite directions along the vertical direction. The weight of the slider is less than the weight of the threshold.

[0015] In some embodiments, one end of the slider has a first rack portion extending in a vertical direction, the end of the threshold facing the slider has a second rack portion extending in a vertical direction, and the linkage is a gear that is pivotally connected to the base and connected between the first rack portion and the second rack portion.

[0016] In some embodiments, the slider can be extended and retracted from the top of the extension, and the bottom of the door leaf has a protrusion extending to the top of the extension. When the door leaf pivots, the protrusion moves along the extension and slides against the slider.

[0017] In some embodiments, the end surface of the threshold facing the door leaf and the end surface of the track groove are provided with windproof cotton and a sealing strip.

[0018] In some embodiments, the damper device also includes an electric push rod and a connecting rod mechanism, the door leaf includes a first door leaf and a second door leaf, the electric push rod is connected between the door frame and the first door leaf to drive the first door leaf to pivot, and the connecting rod mechanism is connected between the first door leaf and the second door leaf to drive the second door leaf to pivot synchronously with the first door leaf.

[0019] In some embodiments, the electric push rod is provided with a safety clutch and an overload pressure sensor.

[0020] In some embodiments, the door leaf includes a plurality of splicing modules connected together. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a damper device according to an embodiment of the present invention;

[0022] Figure 2 is a front view of a portion of a base, a door sill, and a linkage mechanism of a damper device according to an embodiment of the present invention;

[0023] Figure 3 3. It is a top view of the door leaf of the damper device according to the embodiment of the present invention during the pivoting process.

[0024] Reference numerals:

[0025] 1. Door frame; 2. Door leaf; 21. First door leaf; 22. Second door leaf; 23. Projection; 3. Base; 31. Main body; 32. Extension; 4. Door sill; 41. Track groove; 42. Second rack; 5. Linkage mechanism; 51. Slider; 511. First rack; 52. Linkage member; 6. Electric push rod; 7. Connecting rod mechanism. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] Reference below Figure 1-Figure 3 A damper device according to an embodiment of the present invention is described.

[0028] like Figure 1-Figure 3 As shown, the damper device according to the embodiment of the present invention includes a door frame 1 , a door leaf 2 , a base 3 and a threshold 4 .

[0029] The door frame 1 surrounds and forms a door opening. Figure 1 As shown, the door frame 1 includes two side beams extending in the vertical direction and spaced apart in the left-right direction. The door frame 1 also includes a cross beam extending in the left-right direction and connecting the top ends of the two side beams. A door opening is formed between the side beams and the cross beam for passage of personnel and equipment in the roadway. The side beams and the cross beam are preferably, but not limited to, connected to the inner wall of the roadway.

[0030] The door leaf 2 is connected to the door frame 1 and can pivot between a closed position for closing the door opening and an open position for opening the door opening. Figure 1As shown, the door leaf 2 is vertically arranged, and the door leaf 2 is preferably but not limited to being connected to the side beam of the door frame 1 through a vertical rotating shaft so as to be pivotable relative to the door leaf 2 around the vertical direction, and has a closed position for closing the door opening and an open position for opening the door opening. Preferably, the door leaf 2 is located in the door opening formed by the door frame 1 when in the closed position, and is orthogonal to the plane formed by the door frame 1 when in the open position, as shown in FIG. Figure 1 The door leaf 2 is shown in the closed position. Figure 3 The door leaf 2 is shown between a closed position and an open position.

[0031] The base 3 is arranged below the door frame 1, and a space is provided between the base 3 and the door leaf 2 in the closed position. Figure 1 As shown, the base 3 is located below the door frame 1. The two side beams of the door frame 1 are preferably, but not limited to, connected to the top of the base 3 to provide greater stability for the damper device. The base 3 is preferably, but not limited to, buried in the ground of the tunnel to prevent obstruction of personnel and equipment passing through the door opening. A space is provided between the base 3 and the closed door leaf 2 to allow for the passage of tracks on the tunnel floor.

[0032] The threshold 4 is connected to the base 3 and can move between an extended position extending into the interval space and a retracted position retracted into the base 3. A track groove 41 is provided on the top surface of the threshold 4. The track groove 41 penetrates the threshold 4 along the thickness direction of the threshold 4. The track groove 41 is used for the track to pass through the threshold 4.

[0033] like Figure 1 As shown, the threshold 4 is provided in the base 3 and can be extended and retracted from the top of the base 3, so that the threshold 4 has an extended position extending into the partition space and a retracted position retracted into the base 3. In the extended position, the top of the threshold 4 is roughly against the bottom of the door leaf 2 in the closed position, so that the partition space is blocked by the threshold 4, thereby ensuring the sealing of the damper device when the door leaf 2 closes the door opening. In the retracted position, the top of the threshold 4 is flush with or lower than the top of the base 3, so that the threshold 4 is lower than or flush with the ground of the tunnel, thereby preventing the threshold 4 from affecting the passage of people and operating equipment in the tunnel through the door opening. Figure 1 The door sill 4 is shown in the extended position.

[0034] The top surface of threshold 4 is provided with a track groove 41, which extends through threshold 4 in the front-to-back direction. When threshold 4 is raised from its retracted position to its extended position, the track on the roadway floor vertically inserts into track groove 41, thereby passing through threshold 4 in the front-to-back direction. This prevents interference between threshold 4 and the track on the roadway floor, which could cause damage. The cross-sectional shape and dimensions of track groove 41 match those of the track on the roadway floor, ensuring that threshold 4 blocks as much of the intervening space as possible.

[0035] In the damper device of the embodiment of the present invention, when the door leaf 2 is in the closed position closing the door opening, the threshold 4 is extended from the base 3 to the extended position, and the track passes through the track groove 41 to block the interval space between the door leaf 2 and the base 3, thereby ensuring the sealing of the damper device; when the door leaf 2 is in the open position opening the door opening, the threshold 4 is retracted from the base 3 to the retracted position to avoid blocking operating equipment such as rail vehicles passing through the door opening.

[0036] In some embodiments, when the door leaf 2 pivots from the closed position to the open position, the threshold 4 moves from the extended position to the retracted position, and when the door leaf 2 pivots from the open position to the closed position, the threshold 4 moves from the retracted position to the extended position.

[0037] Specifically, the threshold 4 moves synchronously with the pivoting of the door leaf 2. When the door leaf 2 pivots from the closed position to the open position, the threshold 4 moves downward from the extended position to the retracted position. When the door leaf 2 pivots from the open position to the closed position, the threshold 4 moves upward from the retracted position to the extended position. In other words, when the door leaf 2 is in the open position, the threshold 4 is in the retracted position, and when the door leaf 2 is in the closed position, the threshold 4 is in the extended position. This makes the damper device have a higher operating efficiency, thereby improving the working efficiency in the tunnel.

[0038] It is understandable that, in other embodiments, the pivoting process of the door leaf and the movement process of the threshold are independent.

[0039] In some embodiments, the damper device also includes a linkage mechanism 5, which is connected between the door leaf 2 and the threshold 4. When the door leaf 2 pivots from the open position to the closed position, the threshold 4 is driven by the linkage mechanism 5 to move from the retracted position to the extended position. When the door leaf 2 pivots from the closed position to the open position, the linkage mechanism 5 is driven to reset, and the threshold 4 falls from the extended position to the retracted position.

[0040] like Figure 1 and Figure 2 As shown, the linkage mechanism 5 is connected between the door leaf 2 and the threshold 4 and can move under the drive of the door leaf 2.

[0041] When the door leaf 2 pivots from the open position to the closed position, the door leaf 2 drives the linkage mechanism 5 to operate, and the linkage mechanism 5 drives the door sill 4 to move upward from the retracted position to the extended position, so that when the door leaf 2 pivots from the open position to the closed position, the door sill 4 moves from the retracted position to the extended position.

[0042] When the door leaf 2 pivots from the closed position to the open position, the door leaf 2 drives the linkage mechanism 5 to move in the opposite direction and reset, so that the door sill 4 can move downward from the extended position. Since the door sill 4 has a certain weight, the door sill 4 can automatically drop to the retracted position under the action of gravity, so that when the door leaf 2 pivots from the closed position to the open position, the door sill 4 moves downward from the extended position to the retracted position.

[0043] By means of the linkage mechanism 5 and in conjunction with the deadweight of the threshold 4 , the door leaf 2 pivots while the threshold 4 moves synchronously.

[0044] It is understandable that the door leaf and the threshold are not limited to being connected by a linkage mechanism. In other embodiments, the door leaf and the threshold are both provided with corresponding driving members, and the driving members of the door leaf and the driving members of the threshold are opened and closed synchronously, so that the door leaf pivots and the threshold moves synchronously.

[0045] In some embodiments, the base 3 includes a main body 31 and an extension 32. The extension 32 is provided at an end of the main body 31 and extends along the pivot trajectory of the door leaf 2. The main body 31 is connected to the threshold 4. The linkage mechanism 5 includes a slider 51 and a linkage member 52. The slider 51 is connected to the extension 32 and is movable in a vertical direction relative to the extension 32. The slider 51 extends along the pivot trajectory of the door leaf 2. The top surface of the slider 51 is inclined from top to bottom from one end adjacent to the main body 31 to the other end away from the main body 31. The door leaf 2 abuts against the top surface of the slider 51 and is movable along the pivot trajectory of the door leaf 2 relative to the top surface of the slider 51. The linkage member 52 is connected between one end of the slider 51 and the threshold 4, and causes the slider 51 and the threshold 4 to move in opposite directions in the vertical direction. The weight of the slider 51 is less than that of the threshold 4.

[0046] like Figure 1 and Figure 2 As shown, the base 3 includes a main body 31 and an extension portion 32. The main body 31 extends in the left and right directions and is located below the door leaf 2 in the closed position. The threshold 4 is arranged in the main body 31 and can be extended and retracted from the top of the main body 31.

[0047] An extension portion 32 is provided at at least one end of the main body 31 in the left-right direction. The extension portion 32 corresponds to the door leaf 2. The extension portion 32 extends from the main body 31 along the pivot path of the door leaf 2. In other words, the extension portion 32 is configured in an arc shape around the pivot axis of the door leaf 2. When the door leaf 2 pivots, the extension portion 32 is always located below the door leaf 2.

[0048] The linkage mechanism 5 includes a slider 51 and a linkage member 52 . The slider 51 is connected to the extension portion 32 and can move vertically relative to the extension portion 32 . Preferably, the slider 51 is disposed in the extension portion 32 and can move vertically.

[0049] The slider 51 extends along the pivot trajectory of the door leaf 2. In other words, the slider 51 is set to an arc shape around the pivot axis of the door leaf 2. Preferably, the slider 51 fits in the extension portion 32, and the cross-sectional shape of the slider 51 is substantially consistent with the cross-sectional shape of the extension portion 32.

[0050] The door leaf 2 always abuts against the top surface of the slider 51. When the door leaf 2 pivots, the door leaf 2 slides along the extension direction of the slider 51. The top surface of the slider 51 is tilted from top to bottom from one end adjacent to the main body 31 to the other end away from the main body 31. In other words, the top surface of the slider 51 is tilted from top to bottom from one end adjacent to the threshold 4 to the other end away from the threshold 4. The top surface of the slider 51 can be a flat surface or a curved surface, preferably a curved surface, such as Figure 2 shown.

[0051] The end of the slider 51 adjacent to the threshold 4 is located in the direction in which the threshold 4 extends. In other words, the slider 51 and the threshold 4 are arranged in a left-right direction. The slider 51 and the threshold 4 are connected by a linkage 52, allowing the slider 51 and the threshold 4 to move in opposite directions in the vertical direction. Specifically, when the slider 51 moves upward, the threshold 4 moves downward, and when the slider 51 moves downward, the threshold 4 moves upward.

[0052] When the door leaf 2 is in the open position, the door leaf 2 abuts against the other end of the slider 51 that is lower than the top. In other words, the door leaf 2 abuts against the other end of the slider 51 that is away from the threshold 4. At this time, the slider 51 is at a higher height and the threshold 4 is in the retracted position.

[0053] When the door leaf 2 pivots from the open position to the closed position, the door leaf 2 maintains contact with the top surface of the slider 51 and slides from the lower end of the slider 51 to the higher end of the slider 51. In other words, the door leaf 2 slides from the other end of the slider 51 away from the threshold 4 to the end of the slider 51 adjacent to the threshold 4. Since the height position of the door leaf 2 remains unchanged and the top surface of the slider 51 is inclined, the door leaf 2 presses the slider 51 downward, and during the downward movement of the slider 51, the threshold 4 is driven upward by the linkage 52.

[0054] When the door leaf 2 is in the closed position, the door leaf 2 abuts against the higher end of the slider 51. In other words, the door leaf 2 abuts against the end of the slider 51 adjacent to the door sill 4. At this time, the slider 51 is at a lower height position, and the door sill 4 is in the extended position driven by the linkage 52.

[0055] When the door leaf 2 pivots from the closed position to the open position, the door leaf 2 remains in contact with the top surface of the slider 51 and slides from the other higher end of the slider 51 to the lower end of the slider 51. Since the height position of the door leaf 2 remains unchanged and the top surface of the slider 51 is inclined, the slider 51 has space to move upward. Since the volume and weight of the slider 51 are smaller than the threshold 4, the threshold 4 moves downward under the action of its own weight and drives the slider 51 to move upward through the linkage 52, so that the slider 51 remains in contact with the door leaf 2.

[0056] Thus, by means of the slider 51 provided on the extension portion 32 and the linkage member 52 connecting the slider 51 and the threshold 4, the door leaf 2 pivots while the threshold 4 moves synchronously, thereby reducing the use of electronic control equipment, reducing the structural complexity of the damper device and making it more suitable for alley environments.

[0057] In some embodiments, one end of the slider 51 has a first rack portion 511 extending in a vertical direction, and the end of the threshold 4 facing the slider 51 has a second rack portion 42 extending in a vertical direction. The linkage 52 is a gear, which is pivotally connected to the base 3 and connected between the first rack portion 511 and the second rack portion 42.

[0058] like Figure 2 As shown, the slider 51 is arranged at an interval with the threshold 4 in the left-right direction at one end adjacent to the threshold 4, and the slider 51 has a first rack portion 511 extending in the vertical direction at one end adjacent to the threshold 4, and the threshold 4 has a second rack portion 42 extending in the vertical direction at the end facing the slider 51. The linkage member 52 is a gear, which is preferably but not limited to being arranged in the base 3 and located near the connection position between the main body 31 and the extension portion 32. The gear is connected to the base 3 so as to be pivotable in the front-rear direction and is meshedly connected between the first rack portion 511 and the second rack portion 42.

[0059] When the slider 51 moves downward, the first rack portion 511 drives the gear to rotate forward, and the gear drives the second rack portion 42 to move upward, thereby moving the door sill 4 upward. When the door sill 4 moves downward, the second rack portion 42 drives the gear to rotate backward, and the gear drives the first rack portion 511 to move upward, thereby moving the slider 51 upward.

[0060] Therefore, the first rack portion 511 , the second rack portion 42 and the linkage member 52 as a gear cooperate to make the slider 51 and the door sill 4 move in opposite directions along the vertical direction.

[0061] It is understandable that the linkage is not limited to a gear. In other embodiments, the linkage is a lever that can pivot with the base in the front and rear directions, one end of the lever is pivotally connected to the slider, and the other end of the lever is pivotally connected to the door sill.

[0062] In some embodiments, the slider 51 can be extended and retracted from the top of the extension 32, and the bottom of the door leaf 2 has a protrusion 23 extending to the top of the extension 32. When the door leaf 2 pivots, the protrusion 23 moves along the extension 32 and slides against the slider 51.

[0063] like Figure 1 and Figure 2 As shown, the slider 51 is provided in the extension portion 32 and can be extended and retracted from the top of the extension portion 32. When the door leaf 2 abuts against the other end of the slider 51, the slider 51 is in a position extending from the top of the extension portion 32. When the door leaf 2 abuts against the higher end of the slider 51, the slider 51 is in a position retracted from the top of the extension portion 32 to the inside of the extension portion 32, as shown in FIG. Figure 1 shown.

[0064] The bottom of the door leaf 2 has a protrusion 23 extending downward. During the pivoting of the door leaf 2, the protrusion 23 is always located above the extension portion 32 and moves along the extension direction of the extension portion 32 as the door leaf 2 pivots. The bottom surface of the protrusion 23 is preferably, but not limited to, substantially flush with the top surface of the extension portion 32. The bottom surface of the protrusion 23 is always in sliding contact with the top surface of the slider 51 along the extension direction of the slider 51, thereby ensuring that the door leaf 2 and the top surface of the slider 51 remain in contact through the protrusion 23.

[0065] When the door leaf 2 is in the closed position, the protrusion 23 is located in the partition space and is arranged side by side with the door sill 4 in the left-right direction, so the protrusion 23 also plays a role in blocking the partition space.

[0066] In some embodiments, the end surface of the threshold 4 facing the door leaf 2 and the end surface of the track groove 41 are provided with windproof cotton and sealing strips.

[0067] Specifically, the top surface of the threshold 4 is provided with windproof cotton and a sealing strip, so that the threshold 4 in the extended position is sealed and connected to the door leaf 2, thereby ensuring the sealing of the damper device.

[0068] The bottom and side surfaces of the track groove 41 are both provided with windshield cotton and sealing strips, so that the door sill 4 in the extended position is sealedly connected to the track in the track groove 41, thereby ensuring the sealing of the damper device.

[0069] Furthermore, the end surface of the protrusion 23 facing the threshold 4 is provided with windproof cotton and a sealing strip, so that when the door leaf 2 is in the closed position, the threshold 4 in the extended position is sealed with the protrusion 23, thereby ensuring the sealing of the damper device.

[0070] In some embodiments, the damper device also includes an electric push rod 6 and a connecting rod mechanism 7, the door leaf 2 includes a first door leaf 21 and a second door leaf 22, the electric push rod 6 is connected between the door frame 1 and the first door leaf 21 to drive the first door leaf 21 to pivot, and the connecting rod mechanism 7 is connected between the first door leaf 21 and the second door leaf 22 to drive the second door leaf 22 to pivot synchronously with the first door leaf 21.

[0071] like Figure 1 and Figure 3 As shown, the left side beam of the door frame 1 is pivotally connected to the first door leaf 21 in a vertical direction, and the right side beam of the door frame 1 is pivotally connected to the second door leaf 22 in a vertical direction, so that the door opening can be closed and opened by the first door leaf 21 and the second door leaf 22.

[0072] The top beam of the door frame 1 is provided with an electric push rod 6 extending in the left-right direction. The electric push rod 6 is connected between the top beam of the door frame 1 and the first door leaf 21 to drive the first door leaf 21 to pivot through the telescopic action of the electric push rod 6.

[0073] A connecting rod mechanism 7 is connected between the top of the first door leaf 21 and the top of the second door leaf 22. The first door leaf 21 drives the second door leaf 22 to pivot through the connecting rod mechanism 7, so that the first door leaf 21 and the second door leaf 22 can be synchronously pivoted from the open position to the closed position, and can be synchronously pivoted from the closed position to the open position.

[0074] Preferably, the first door leaf 21 and the second door leaf 22 pivot around the pivot axis of the first door leaf 21 and the second door leaf 22 pivot around the pivot axis of the second door leaf 22 simultaneously in the clockwise direction or simultaneously in the counterclockwise direction, then the pivoting directions of the first door leaf 21 and the second door leaf 22 along the front-to-back direction are opposite, specifically, the first door leaf 21 pivots forward to pivot from the closed position to the open position, and the second door leaf 22 pivots backward to pivot from the closed position to the open position.

[0075] Extension portions 32 are provided at both left and right ends of the main body 31. The two extension portions 32 extend in opposite directions from the main body 31 in the front-to-back direction. The extension portion 32 at the left end is an arc-shaped around the pivot axis of the first door leaf 21 and extends forward from the main body 31. The extension portion 32 at the right end is an arc-shaped around the pivot axis of the second door leaf 22 and extends backward from the main body 31.

[0076] Each extension portion 32 is provided with a corresponding slider 51, the top surface of the slider 51 at the left end is tilted upward from left to right, and the top surface of the slider 51 at the right end is tilted upward from right to left. The right end surface of the left end slider 51 and the left end surface of the right end slider 51 are respectively provided with a first rack portion 511, and the left and right ends of the door sill 4 are respectively provided with a second rack portion 42 and a meshing gear.

[0077] In some embodiments, the electric push rod 6 is equipped with a safety clutch and an overload pressure sensor. The overload pressure sensor can obtain the real-time torque of the electric push rod 6. During the pivoting process of the first door leaf 21 and the second door leaf 22, if the real-time torque obtained by the overload pressure sensor suddenly increases, it is determined that a vehicle or person is being trapped. At this time, the safety clutch immediately reverses the electric push rod 6, thereby providing safety protection for the damper device, personnel passing through the damper device, and operating equipment.

[0078] Furthermore, the electric push rod 6 is driven by a servo motor, which is provided with an encoder and a servo driver to enable the electric push rod 6 to extend and retract smoothly, thereby driving the first door leaf 21 and the second door leaf 22 to pivot smoothly, and can adjust the pivot speed, pivot position, pivot angle, etc. of the first door leaf 21 and the second door leaf 22, so that the first door leaf 21 and the second door leaf 22 can rotate at a uniform speed and reduce impact.

[0079] In some embodiments, the door leaf 2 includes a plurality of splicing modules connected together.

[0080] Specifically, the first door leaf 21 and the second door leaf 22 each include a plurality of splicing modules connected to each other, so as to facilitate the transportation, disassembly, production and maintenance of the first door leaf 21 and the second door leaf 22 .

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0083] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0084] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0085] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0086] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A damper device, characterized in that: include: A door frame (1), wherein the door frame (1) surrounds and forms a door opening; A door leaf (2), the door leaf (2) being connected to the door frame (1) and capable of pivoting between a closed position for closing the door opening and an open position for opening the door opening; A base (3), the base (3) being arranged below the door frame (1), and a spacing space being provided between the base (3) and the door leaf (2) located in the closed position; A threshold (4), the threshold (4) is connected to the base (3) and can move between an extended position extending into the interval space and a retracted position retracted into the base (3), the top surface of the threshold (4) is provided with a track groove (41), the track groove (41) penetrates the threshold (4) along the thickness direction of the threshold (4), and the track groove (41) is used for a track to pass through the threshold (4).

2. The damper device according to claim 1, characterized in that When the door leaf (2) pivots from the closed position to the open position, the threshold (4) moves from the extended position to the retracted position; and when the door leaf (2) pivots from the open position to the closed position, the threshold (4) moves from the retracted position to the extended position.

3. The damper device according to claim 2, characterized in that The invention also includes a linkage mechanism (5), wherein the linkage mechanism (5) is connected between the door leaf (2) and the threshold (4). When the door leaf (2) pivots from the open position to the closed position, the threshold (4) is driven to move from the retracted position to the extended position through the linkage mechanism (5). When the door leaf (2) pivots from the closed position to the open position, the linkage mechanism (5) is driven to reset, and the threshold (4) falls from the extended position to the retracted position.

4. The damper device according to claim 3, characterized in that The base (3) comprises a main body (31) and an extension portion (32), wherein the extension portion (32) is provided at an end of the main body (31) and extends along a pivoting trajectory of the door leaf (2), and the main body (31) is connected to the threshold (4); The linkage mechanism (5) includes a slider (51) and a linkage member (52), wherein the slider (51) is connected to the extension portion (32) and can move in a vertical direction relative to the extension portion (32), and the slider (51) extends along the pivot trajectory of the door leaf (2), and the top surface of the slider (51) is tilted from top to bottom from one end adjacent to the main body (31) to the other end away from the main body (31), and the door leaf (2) abuts against the top surface of the slider (51) and can move along the pivot trajectory of the door leaf (2) relative to the top surface of the slider (51), and the linkage member (52) is connected between one end of the slider (51) and the door sill (4), and enables the slider (51) and the door sill (4) to move in opposite directions along the vertical direction, and the weight of the slider (51) is less than the weight of the door sill (4).

5. The damper device according to claim 4, characterized in that One end of the slider (51) has a first rack portion (511) extending in a vertical direction, and the end of the door sill (4) facing the slider (51) has a second rack portion (42) extending in a vertical direction. The linkage member (52) is a gear, which is pivotally connected to the base (3) and connected between the first rack portion (511) and the second rack portion (42).

6. The damper device according to claim 4, characterized in that The slider (51) can be extended and retracted from the top of the extension (32), and the bottom of the door leaf (2) has a protrusion (23) extending to the top of the extension (32). When the door leaf (2) pivots, the protrusion (23) moves along the extension (32) and slides against the slider (51).

7. The damper device according to claim 1, wherein: The end surface of the threshold (4) facing the door leaf (2) and the end surface of the track groove (41) are provided with windproof cotton and a sealing strip.

8. The damper device according to claim 1, wherein: The invention also includes an electric push rod (6) and a connecting rod mechanism (7), wherein the door leaf (2) includes a first door leaf (21) and a second door leaf (22), the electric push rod (6) is connected between the door frame (1) and the first door leaf (21) to drive the first door leaf (21) to pivot, and the connecting rod mechanism (7) is connected between the first door leaf (21) and the second door leaf (22) to drive the second door leaf (22) to pivot synchronously with the first door leaf (21).

9. The damper device according to claim 8, characterized in that The electric push rod (6) is provided with a safety clutch and an overload pressure sensor.

10. The damper device according to claim 1, wherein The door leaf (2) comprises a plurality of splicing modules connected to each other.

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