Hinge assembly for mine air door and mine air door

Abstract

The hinge assembly used for the mine air door comprises a first hinge base, a second hinge base, a first connecting rod, a second connecting rod, a second connecting rod and a third connecting rod, and the first hinge base is used for being installed on a door frame of the mine air door; the first pin shaft extends in the height direction and is rotatably mounted on the first hinge seat; the second hinge seat is used for being installed on a door leaf of the mine air door, and the second hinge seat is connected to the first pin shaft so as to drive the first pin shaft to rotate relative to the first hinge seat; and the limiting piece is mounted on the door frame and is used for axially limiting the first pin shaft. The second hinge seat can move along with the door frame and drive the first pin shaft to rotate relative to the first hinge seat, so that the door leaf rotates relative to the door frame, and opening and closing of the door leaf are completed. In the using process, the limiting piece can limit the first pin shaft in the axial direction, the situation that the first pin shaft moves in the axial direction due to the influence of the environment, external force and the like is avoided, the position relation between the door leaf and the door frame is guaranteed, and therefore it is guaranteed that the door leaf can be tightly closed when closed, and leakproofness is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of mine air doors, and in particular to a hinge assembly for a mine air door and a mine air door. Background Art

[0002] Mine dampers are important equipment for controlling mine ventilation and play a key role in the mine ventilation system. They are mainly used to adjust the airflow underground, coordinate the air volume in each area, and promote air circulation and gas diffusion in the mine, thereby effectively ensuring the stability and reliability of the ventilation system and the safety of miners. Damper usually includes a door frame and a door leaf hinged by hinges. During use, the vertical axis of the hinge increases friction due to the underground environment. During operation, the vertical axis of the hinge will drive the door leaf to move upward or downward, resulting in the door leaf not being able to close tightly, and the effectiveness and safety of the damper are reduced. Summary of the invention

[0003] The purpose of the present disclosure is to provide a hinge assembly for a mine air door and a mine air door, so as to at least partially solve the problems existing in the related art.

[0004] In order to achieve the above-mentioned objectives, the present disclosure provides a hinge assembly for a mine air door, comprising: a first hinge seat, used to be installed on the door frame of the mine air door; a first pin shaft, extending in the height direction and rotatably installed on the first hinge seat; a second hinge seat, used to be installed on the door leaf of the mine air door, the second hinge seat is connected to the first pin shaft so as to be able to drive the first pin shaft to rotate relative to the first hinge seat; and a limit member, installed on the door frame and used to form an axial limit for the first pin shaft.

[0005] Optionally, the limiting member is constructed as a cover structure including a clearance space, the limiting member covers and is fixed to the first hinge seat, the first pin shaft is located in the clearance space and forms the axial limit through the clearance space.

[0006] Optionally, it also includes a connecting member for connecting between the first pin shaft and the second hinge seat, the connecting member includes a vertical part and a horizontal part connected to each other, the upper end of the vertical part is connected to the first pin shaft so that it can rotate along with the first pin shaft, and the end of the horizontal part away from the vertical part is connected to the second hinge seat.

[0007] Optionally, the vertical portion is constructed as a sleeve structure, the first pin shaft passes through the sleeve structure from top to bottom, the first hinge seat and the vertical portion are both located in the clearance space and the axial limit is formed for the first pin shaft through the clearance space.

[0008] Optionally, the limiting member includes a fixed cover shell covering the first hinge seat and a rotating cover shell covering the vertical part, the rotating cover shell can rotate relative to the fixed cover shell, the rotating cover shell forms an escape opening for the horizontal part to extend and connect to the second hinge seat, and the horizontal part is connected to the rotating cover shell so that the rotating cover shell can follow the horizontal part to rotate relative to the fixed cover shell.

[0009] Optionally, the rotating cover shell and the fixed cover shell are fitted to each other and one of them forms an arc groove facing the other, and the other forms an arc protrusion for extending into the arc groove, wherein, in the projection along the height direction, the center of the arc groove overlaps with the first pin shaft.

[0010] Optionally, the rotating cover is at least partially spaced apart from the door frame to avoid interference between the rotating cover and the door frame during rotation.

[0011] Optionally, it further comprises a second pin shaft extending in a horizontal direction and fixed to the second hinge seat, wherein one end of the second pin shaft is connected to the horizontal part.

[0012] Optionally, the horizontal portion is configured as a sleeve structure, and the second pin shaft at least partially extends into the sleeve structure and is fixedly connected to the sleeve structure.

[0013] Optionally, the first hinge seat is provided with an oil filling hole connected to the first pin shaft, and a latch for sealing the oil filling hole is provided at a position of the limiting member corresponding to the oil filling hole.

[0014] Optionally, the limiting member is detachably covered on the first hinge seat.

[0015] Optionally, the limiting member is disposed on an outer periphery of the first hinge seat along a direction toward the door frame, and a sealing member is disposed between the limiting member and the first hinge seat at a position close to the door frame.

[0016] According to a second aspect of the present disclosure, a mine air door is provided, comprising a door frame, a door leaf and the above-mentioned hinge assembly.

[0017] Through the above technical solution, when an external force is applied to push the door leaf to rotate, the second hinge seat can follow the movement and drive the first pin shaft to rotate relative to the first hinge seat, thereby realizing the rotation of the door leaf relative to the door frame and completing the opening and closing of the door leaf. During use, the limiter can limit the axial direction of the first pin shaft to prevent the first pin shaft from being displaced axially due to the environment, external forces, etc., thereby ensuring the positional relationship between the door leaf and the door frame, and then ensuring that the door leaf can be closed tightly to ensure airtightness.

[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is an exploded view of a hinge assembly exemplarily shown according to the present disclosure; Figure 2 is a stereoscopic diagram of a hinge assembly exemplarily shown according to the present disclosure; Figure 3 is a front view of a mine air door according to an example of the present disclosure, wherein the stopper is omitted; Figure 4 yes Figure 3 Enlarged view of part A.

[0020] Description of Reference Numerals 1-door frame; 2-door leaf; 100-first hinge seat; 110-oil filling hole; 200-second hinge seat; 300-first pin; 400-limiting member; 410-fixed cover; 420-rotating cover; 421-avoidance; 500-connecting member; 510-vertical part; 520-horizontal part; 600-second pin. DETAILED DESCRIPTION

[0021] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0022] In the present disclosure, unless otherwise stated, the directional terms "inside" and "outside" used are based on the structure of the relevant components themselves, or may also be based on the positional relationship between the relevant components and other components during actual use. For example: the first pin shaft is located "inside" the makeshift space and forms an axial limit through the makeshift space, which means that the first pin shaft is located in the accommodating space of the makeshift space; the "height direction" used refers to the direction perpendicular to the ground; the "horizontal aspect" used refers to the direction parallel to the ground.

[0023] In addition, in the present disclosure, the terms "first", "second", etc. are used to distinguish one element from another element, and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0024] Reference Figure 1-Figure 4The present disclosure exemplarily shows a hinge assembly for a mine air door, including a first hinge seat 100 for installation on a door frame 1 of the mine air door, a first pin shaft 300 extending in a height direction and rotatably installed on the first hinge seat 100, a second hinge seat 200 for installation on a door leaf 2 of the mine air door, and a limiting member 400 installed on the door frame 1 and used for axially limiting the first pin shaft 300, the second hinge seat 200 is connected to the first pin shaft 300 so as to be able to drive the first pin shaft 300 to rotate relative to the first hinge seat 100.

[0025] The present disclosure does not limit how the first pin shaft 300 is rotatably mounted on the first hinge seat 100. For example, a circular sleeve structure may be provided on the first hinge seat 100, and the first pin shaft 300 extends into the circular sleeve structure and can rotate relatively. In addition, in some other embodiments, a support bearing may also be provided on the first hinge seat 100, and the first pin shaft 300 is press-fitted to the inner ring of the support bearing to achieve a rotatable connection.

[0026] The present disclosure does not limit how the second hinge seat 200 is connected to the first pin shaft 300, for example, it can be realized by the connecting member 500 mentioned below. Alternatively, it can also be directly fixedly connected to the first pin shaft 300, such as welding, integral molding, etc.

[0027] The present disclosure does not limit the specific structure of the position-limiting member 400. For example, in some embodiments, it can be a cover structure mentioned below, which is buckled on the first hinge seat 100 and the first pin shaft 300 is located in the internal clearance space of the cover structure, so that the first pin shaft 300 can be axially limited by the inner wall of the clearance space. In addition, in some other embodiments, the position-limiting member 400 can also be two baffles installed on the first hinge seat 100, and the two baffles are respectively located at the two ends of the axial direction of the first pin shaft 300, so as to play a role of limiting and stopping.

[0028] By using the above technical solution, when an external force is applied to push the door leaf 2 to rotate, the second hinge seat 200 can follow the movement and drive the first pin shaft 300 to rotate relative to the first hinge seat 100, thereby realizing the rotation of the door leaf 2 relative to the door frame 1 and completing the opening and closing of the door leaf 2. During use, the limiter 400 can limit the axial direction of the first pin shaft 300 to prevent the first pin shaft 300 from being displaced along the axial direction due to the influence of the environment, external forces, etc., thereby ensuring the positional relationship between the door leaf 2 and the door frame 1, and further ensuring that the door leaf 2 can be closed tightly to ensure airtightness.

[0029] Reference Figure 1 and Figure 2In the embodiment of the present disclosure, the stopper 400 can be constructed as a cover structure including a clearance space (not shown in the figure), the stopper 400 can be set and fixed to the first hinge seat 100, the first pin 300 is located in the clearance space and the axial limit is formed by the clearance space. In this design, the clearance space refers to the groove structure formed in the stopper 400. When the stopper 400 is set and fixed to the first hinge seat 100, the clearance space is used to at least accommodate the first pin 300 and play an axial limit role. In addition, this cover structure can shield and protect the first hinge seat 100 and the first pin 300, preventing impurities, dust, etc. in the mine from contacting the first pin 300, thereby improving the service life. The stopper 400 and the first hinge seat 100 can be connected by bolts. In addition, in some other embodiments, the stopper 400 can also be fixed to the door frame 1.

[0030] Reference Figure 1-Figure 4 In the embodiment of the present disclosure, the hinge assembly for the mine air door may further include a connector 500 for connecting between the first pin shaft 300 and the second hinge seat 200. The connector 500 may include a vertical portion 510 and a horizontal portion 520 connected to each other. The upper end of the vertical portion 510 is connected to the first pin shaft 300 so as to rotate with the first pin shaft 300, and the end of the horizontal portion 520 away from the vertical portion 510 is connected to the second hinge seat 200. With such a design, when the door leaf 2 drives the second hinge seat 200 to rotate, the second hinge seat 200 can drive the vertical portion 510 to rotate through the horizontal portion 520, and then drive the first pin shaft 300 to rotate relative to the first hinge seat 100 through the vertical portion 510, thereby realizing the opening and closing of the door leaf 2. By providing the connector 500, the first hinge seat 100 and the second hinge seat 200 can be kept at a certain distance to avoid mutual interference during rotation, and the aforementioned stopper 400 can be installed conveniently. In other words, if the second hinge seat 200 is fixed to the first pin shaft 300 , the second hinge seat 200 will interfere with the limiting member 400 when the limiting member 400 is installed.

[0031] The present disclosure does not limit the specific structure of the connecting member 500 and the connection method between the connecting member 500 and the first pin 300. Figure 1In the illustrated embodiment, the vertical portion 510 can be constructed as a sleeve structure, the first pin shaft 300 can penetrate the sleeve structure from top to bottom, the first hinge seat 100 and the vertical portion 510 are both located in the clearance space and the first pin shaft 300 is axially limited by the clearance space. Such a design can increase the matching area of ​​the first pin shaft 300 and the connecting member 500, improve the matching strength, and thus improve the service life of the hinge assembly, compared with directly connecting the shaft end of the first pin shaft 300 with the connecting member 500, and further improve the service life of the hinge assembly. Specifically, the first pin shaft 300 can be press-fitted (interference fit) inside the sleeve structure to form a fixed connection. In addition, in some other embodiments, the first pin shaft 300 can also be locked with the sleeve structure through a keyway, and the present disclosure does not limit this.

[0032] Further, refer to Figure 1 and Figure 2 In the embodiment of the present disclosure, the stopper 400 may include a fixed cover 410 covered on the first hinge seat 100 and a rotating cover 420 covered on the vertical portion 510. The rotating cover 420 may rotate relative to the fixed cover 410. The rotating cover 420 may form a evacuation opening 421 for the horizontal portion 520 to extend and connect to the second hinge seat 200. The horizontal portion 520 may be connected to the rotating cover 420 so that the rotating cover 420 may rotate relative to the fixed cover 410 following the horizontal portion 520. With such a design, when the second hinge seat 200 rotates following the door leaf 2, the horizontal portion 520 may drive the rotating cover 420 to rotate, thereby preventing the stopper 400 from interfering with the rotational motion.

[0033] The present disclosure does not limit how the horizontal portion 520 is connected to the rotating housing 420. For example, the horizontal portion 520 may be connected by press-fitting it into the avoidance opening 421. Alternatively, the horizontal portion 520 and the rotating housing 420 may be connected by welding.

[0034] The present disclosure does not limit how the rotating cover 420 and the fixed cover 410 are rotated together. For example, in the embodiment of the present disclosure, the rotating cover 420 and the fixed cover 410 can fit each other and one of them is formed with an arc groove (not shown in the figure) facing the other, and the other is formed with an arc protrusion (not shown in the figure) for extending into the arc groove, wherein, in the projection along the height direction, the center of the arc groove overlaps with the first pin shaft 300. With such a design, the rotating cover 420 and the fixed cover 410 can realize relative rotation with the first pin shaft 300 as the center axis.

[0035] In the embodiment of the present disclosure, the rotating cover 420 is at least partially spaced apart from the door frame 1 to avoid interference between the rotating cover 420 and the door frame 1 during the rotation process. The "spaced apart" can be achieved by constructing the shape of the rotating cover 420, or by providing an avoidance groove at a corresponding position of the door frame 1, which is not limited by the present disclosure.

[0036] Reference Figure 1-Figure 4 In the embodiment of the present disclosure, the hinge assembly for the mine air door may further include a second pin shaft 600 extending in the horizontal direction and fixed to the second hinge seat 200, and one end of the second pin shaft 600 may be connected to the horizontal portion 520. The second pin shaft 600 may be fixed to the second hinge seat 200 by means of nut locking or press fitting, and it is relatively stationary with the second hinge seat 200 without relative rotation. The second pin shaft 600 is provided to facilitate the fixed connection between the second hinge seat 200 and the horizontal portion 520, thereby improving the connection strength between the second hinge seat 200 and the horizontal portion 520.

[0037] Further, in an embodiment of the present disclosure, the horizontal portion 520 may be constructed as a sleeve structure, and the second pin 600 may at least partially extend into the sleeve structure and be fixedly connected to the sleeve structure. Compared with directly connecting the shaft end of the second pin 600 to the horizontal portion 520, this design can increase the matching area between the second pin 600 and the horizontal portion 520, improve the matching strength, and thus improve the service life of the hinge assembly. Specifically, the second pin 600 may be press-fitted (interference fit) inside the sleeve structure to form a fixed connection. In addition, in some other embodiments, the second pin 600 may also be locked with the sleeve structure through a keyway, which is not limited by the present disclosure.

[0038] Reference Figure 1 In the embodiment of the present disclosure, the first hinge seat 100 may be provided with an oil injection hole 110 connected to the first pin shaft 300, and a latch (not shown in the figure) for sealing the oil injection hole 110 may be provided at a position of the stopper 400 corresponding to the oil injection hole 110. With such a design, the staff can regularly inject lubricating oil through the oil injection hole 110 toward the first pin shaft 300 to improve the service life of the hinge assembly and the smoothness of rotation.

[0039] In order to facilitate the inspection and oiling of the first hinge seat 100 and the first pin shaft 300, etc., in the embodiment of the present disclosure, the limit member 400 can be detachably covered on the first hinge seat 100, which can be specifically achieved by tightening bolts or the like.

[0040] In order to prevent moisture, impurities, etc. in the mine from affecting the first hinge seat 100 and the first pin shaft 300, in an embodiment of the present disclosure, a limit member 400 can be arranged on the outer periphery of the first hinge seat 100 along the direction toward the door frame 1, and a sealing member, such as a rubber pad, can be arranged between the limit member 400 and the first hinge seat 100 near the door frame 1.

[0041] Reference Figure 3 According to the second aspect of the present disclosure, a mine air door is provided, including a door frame 1, a door leaf 2 and the aforementioned hinge assembly. Since the mine air door has all the beneficial effects of the hinge assembly, they will not be repeated here. The door frame 1 can be made of high-strength steel to ensure firmness and durability. The door frame 1 can be composed of beams and columns, which are connected into a stable frame by welding or bolting. It not only plays the role of supporting the door leaf 2, but also plays the role of fixing the position of the air door to ensure that the air door can be firmly installed on the tunnel wall. The door leaf can also use steel as the main skeleton, and the surface is covered with wear-resistant and corrosion-resistant materials, such as steel plates or special alloys. The door leaf 2 can be composed of multiple panels. The door leaf 2 is the main part of blocking the wind flow. It can effectively isolate the wind flow when closed to prevent the spread of harmful gases. The opening and closing actions of the door leaf 2 need to be flexible and reliable to ensure that miners can pass smoothly.

[0042] In addition to the door frame 1, the door leaf 2 and the hinge assembly, in the embodiment of the present disclosure, the mine air door may also include a driving part, which may include a cylinder, a guide wheel, a fixed frame, etc. The cylinder is an actuator, and the cylinder receives an air pressure signal from the control system and is responsible for pushing the door leaf 2 to open and close through the guide wheel, etc.

[0043] In some embodiments, the mine damper may further include an electric control box, a sensor group, etc. The sensor group includes a position sensor, a pressure sensor, a temperature sensor, etc. The position sensor is responsible for real-time monitoring of the state of the damper, the pressure sensor is responsible for real-time monitoring of the pressure of the damper airflow, and the temperature sensor is responsible for real-time monitoring of the damper temperature and other information, and transmits this information to the control system to control the action of the damper according to the preset logic.

[0044] In some embodiments, the mine air door may further include a balancing mechanism, which is mainly used to balance the weight of the door leaf 2, reduce the resistance during opening and closing, and make the operation of the air door easier. The balancing mechanism may be composed of components such as a connecting rod and a hydraulic cylinder, so that the door leaf 2 maintains a balanced state when opening and closing.

[0045] In some embodiments, the mine air door may also include a counterweight to help the door leaf 2 fall automatically when closing, thereby realizing an automatic closing function. The counterweight is in the form of a heavy hammer or a heavy block, connected to the door leaf 2 through a connecting rod, and uses gravity to achieve automatic closing.

[0046] In some embodiments, the mine damper may further include sealing materials to improve the sealing performance of the damper when it is closed and prevent airflow from leaking from the gap between the door leaf 2 and the door frame 1. The sealing materials may include rubber products, silicone strips, etc., which have excellent sealing and wear resistance.

[0047] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0048] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0049] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A hinge assembly for a mine air door, characterized in that: include: A first hinge seat, used for being installed on a door frame of a mine air door; A first pin shaft extending in a height direction and rotatably mounted on the first hinge seat; A second hinge seat, used for being installed on a door leaf of a mine air door, wherein the second hinge seat is connected to the first pin shaft so as to be able to drive the first pin shaft to rotate relative to the first hinge seat; as well as A limiting member is installed on the door frame and is used to form an axial limit for the first pin shaft.

2. The hinge assembly for a mine air door according to claim 1, characterized in that: The limiting member is constructed as a cover structure including a clearance space. The limiting member covers and is fixed to the first hinge seat. The first pin shaft is located in the clearance space and forms the axial limit through the clearance space.

3. The hinge assembly for a mine air door according to claim 2, characterized in that: It also includes a connecting member for connecting between the first pin shaft and the second hinge seat, the connecting member includes a vertical part and a horizontal part connected to each other, the upper end of the vertical part is connected to the first pin shaft so that it can rotate along with the first pin shaft, and the end of the horizontal part away from the vertical part is connected to the second hinge seat.

4. The hinge assembly for a mine air door according to claim 3, characterized in that: The vertical portion is constructed as a sleeve structure, the first pin shaft penetrates the sleeve structure from top to bottom, the first hinge seat and the vertical portion are both located in the clearance space, and the axial limit of the first pin shaft is formed by the clearance space.

5. The hinge assembly for a mine air door according to claim 4, characterized in that: The limiting member includes a fixed cover shell covering the first hinge seat and a rotating cover shell covering the vertical part. The rotating cover shell can rotate relative to the fixed cover shell. The rotating cover shell forms an escape opening for the horizontal part to extend and connect to the second hinge seat. The horizontal part is connected to the rotating cover shell so that the rotating cover shell can follow the horizontal part to rotate relative to the fixed cover shell.

6. The hinge assembly for a mine air door according to claim 5, characterized in that: The rotating cover shell and the fixed cover shell fit each other and one of them forms an arc groove facing the other, and the other forms an arc protrusion for extending into the arc groove, wherein in the projection along the height direction, the center of the arc groove overlaps with the first pin shaft.

7. The hinge assembly for a mine air door according to claim 5, characterized in that: The rotating cover is at least partially spaced apart from the door frame to prevent the rotating cover from interfering with the door frame during the rotating process.

8. The hinge assembly for a mine air door according to claim 4, characterized in that: It also includes a second pin shaft extending in the horizontal direction and fixed to the second hinge seat, and one end of the second pin shaft is connected to the horizontal part.

9. The hinge assembly for a mine air door according to claim 8, characterized in that: The horizontal portion is configured as a sleeve structure, and the second pin shaft at least partially extends into the sleeve structure and is fixedly connected to the sleeve structure.

10. The hinge assembly for a mine air door according to claim 2, characterized in that: The first hinge seat is provided with an oil filling hole connected to the first pin shaft, and the position of the limiting member corresponding to the oil filling hole is provided with a plug for sealing the oil filling hole.

11. The hinge assembly for a mine air door according to claim 10, characterized in that: The limiting member is detachably covered on the first hinge seat.

12. The hinge assembly for a mine air door according to claim 2, characterized in that: The limiting member is disposed on the outer periphery of the first hinge seat in a direction toward the door frame, and a sealing member is disposed between the limiting member and the first hinge seat at a position close to the door frame.

13. A mine air door, characterized in that: The invention comprises a door frame, a door leaf and a hinge assembly as claimed in any one of claims 1 to 12.

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