A rotary air door frame for coal mine roadway

Abstract

The utility model relates to the technical field of coal mine roadway, especially disclose a rotary air door frame for coal mine roadway, including for supporting fixed outer door frame still include the inner door frame of being placed in the inner side of outer door frame and being used for installing air door, be equipped with rotating seat between outer door frame and inner door frame, rotating seat one end is connected with outer door frame rotation, and the other end of rotating seat is provided with the recess for the inner door frame, and the inner door frame rotates through rotating seat relative to outer door frame, and outer door frame fixedly connected with first limit board, and first limit board is located in the one side of inner door frame and carries out the rotation limit to inner door frame, compared with traditional technology, this technical scheme spares the multiple disassembly process, improves the disassembly installation efficiency of air door frame.

Description

Technical Field

[0001] This utility model relates to the field of coal mine roadway technology, and in particular to a rotary air door frame for coal mine roadways. Background Technology

[0002] Air doors are key facilities in underground ventilation systems in coal mines, used to balance roadway air pressure and isolate airflow. They mainly consist of the air door frame and the forward and reverse air doors. The forward and reverse air doors achieve synchronous forward and reverse rotation of the left and right doors through a linkage mechanism. Due to the geological characteristics of many coal mines, which are "three soft" (soft coal, soft floor, and soft roof), the roadways are often deformed. After the roadway is renovated, the air door frame deforms within a few days and needs to be replaced and repaired. The installation, disassembly, and transportation of the overall frame are inconvenient, causing many inconveniences to coal mine production.

[0003] Chinese utility model patent CN 203097925 U discloses a split-type air door frame for coal mine roadways. The rectangular air door frame is formed by assembling and splicing multiple I-beams, which is easy to disassemble. After the I-beams deform, they can be disassembled, and the deformed parts can be reshaped and reused, resulting in a high reuse rate and saving production costs to a certain extent. However, the linkage mechanism of the forward and reverse air doors is generally fixed to the air door frame by drilling multiple holes. The more holes drilled, the lower the mechanical properties of the I-beams will be, and they will also be prone to deformation. Moreover, the forward and reverse air doors and linkage mechanism need to be disassembled together during the disassembly process, making the disassembly and installation of the I-beams cumbersome and the disassembly and installation efficiency of the air door frame still low.

[0004] Therefore, it is necessary to propose a rotary door frame for coal mine roadways to improve the efficiency of door frame disassembly and installation. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the I-beam of the damper frame is easy to deform and the disassembly and installation efficiency is low. The present invention provides a rotary damper frame for coal mine roadways.

[0006] The technical solution of this utility model is:

[0007] A rotary air door frame for coal mine roadways includes an outer door frame for support and fixation, and an inner door frame placed inside the outer door frame for installing the air door. A rotating seat is provided between the outer door frame and the inner door frame. One end of the rotating seat is rotatably connected to the outer door frame, and the other end of the rotating seat has a groove for the inner door frame to pass through. The inner door frame rotates relative to the outer door frame through the rotating seat.

[0008] The outer door frame is fixedly connected to a first limiting plate, which is located on one side of the inner door frame and limits the rotation of the inner door frame;

[0009] The outer door frame is slidably connected to a second limiting plate, which is located on the opposite side of the first limiting plate. The outer door frame has a limiting groove to accommodate the second limiting plate. When the inner door frame rotates to coincide with the outer door frame, the second limiting plate extends out of the limiting groove to limit the rotation of the inner door frame.

[0010] Furthermore, the rotating seats are located at the top and bottom of the inner door frame, respectively.

[0011] Furthermore, both the second limiting plate and the first limiting plate are rectangular plate-like structures.

[0012] Furthermore, the outer door frame is equipped with a guide rail, and the second limiting plate is slidably connected to the outer door frame through the guide rail. The guide rail is a dovetail-shaped guide rail, which can provide a good limiting effect while satisfying the sliding function, preventing the second limiting plate from separating from the outer door frame.

[0013] Furthermore, both the inner and outer door frames are rectangular.

[0014] Furthermore, both the inner and outer door frames are made of I-beams, making them more suitable for maintenance, replacement, and disassembly.

[0015] Furthermore, sealing strips are provided on the side of the first and second limiting plates opposite to the inner door frame. The sealing strips are used to seal the gap between the inner and outer door frames, thereby improving the isolation effect against wind in the roadway.

[0016] Furthermore, the second limiting plate is equipped with a fixing pin, and pin holes are opened in both the inner door frame and the limiting groove. The fixing pin is inserted into the pin hole, which can fix the second limiting plate to the outer door frame and the second limiting plate to the inner door frame, preventing shaking and relative displacement.

[0017] Furthermore, the fixing pin and the pin hole are threaded together, thus ensuring a secure connection between the fixing pin and the pin shaft.

[0018] This utility model discloses a rotary airlock frame for coal mine roadways. The airlock frame is designed as a dual-frame structure, consisting of an inner and an outer frame, instead of the traditional single-frame structure. This distributes the functions of supporting and fixing the forward and reverse airlocks to the outer and inner frames respectively. While drilling holes in the inner frame during installation of the linkage mechanism on the forward and reverse airlocks may affect its mechanical properties, the outer frame provides the supporting function. The outer frame only has a rotating seat installed and no other holes. The inner and outer frames perform their respective functions without interfering with each other, ensuring the supporting function of the outer frame, preventing deformation, and guaranteeing the installation and normal use of the forward and reverse airlocks. When the inner or outer door frame deforms and needs repair or replacement, the presence of the rotating seat makes the disassembly and separation of the outer and inner door frames quicker. Simply lift the second limiting plate to remove its rotational restriction on the inner door frame, and the inner door frame can be rotated to be perpendicular to the outer door frame. This allows the inner door frame to be pulled out of the groove in the rotating seat, thus separating the inner and outer door frames. When the inner door frame needs to be replaced, it can be replaced directly; when the outer door frame needs to be replaced, it can be replaced separately. There is no need to disassemble the forward and reverse dampers and their connecting mechanisms. Compared with traditional technology, this technical solution eliminates multiple disassembly steps and improves the efficiency of damper frame disassembly and installation. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the locked state of this utility model;

[0020] Figure 2 This is a front view of the present invention in the locked state;

[0021] Figure 3 This is a rear view of the present invention in the locked state;

[0022] Figure 4 This is a schematic diagram of the installation state of this utility model;

[0023] Figure 5 This is a structural diagram of the rotating seat of this utility model.

[0024] Reference numerals in the attached drawings: 1. Outer door frame; 2. Inner door frame; 3. Rotating seat; 4. Groove; 5. First limiting plate; 6. Second limiting plate; 7. Limiting groove; 8. Fixing pin; 9. Pin hole. Detailed Implementation

[0025] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0026] Example 1:

[0027] like Figure 1As shown, this embodiment provides a rotary air door frame for coal mine roadways, including an outer door frame 1 for support and fixation. The outer door frame 1 is fixed to the roadway or wall by screws or welding. It also includes an inner door frame 2 placed inside the outer door frame 1 for installing the air door. A rotating seat 3 is provided between the outer door frame 1 and the inner door frame 2. One end of the rotating seat 3 is rotatably connected to the outer door frame 1 via a bearing, and the other end of the rotating seat 3 has a groove 4 for the inner door frame 2 to pass through. The movable seat 3 rotates relative to the outer door frame 1. The outer door frame 1 is screwed or welded to a first limiting plate 5. The first limiting plate 5 is located on one side of the inner door frame 2 and limits the rotation of the inner door frame 2. The outer door frame 1 is slidably connected to a second limiting plate 6. The second limiting plate 6 is located on the opposite side of the first limiting plate 5. The outer door frame 1 has a limiting groove 7 to accommodate the second limiting plate 6. When the inner door frame 2 rotates to coincide with the outer door frame 1, the second limiting plate 6 extends out from the limiting groove 7 to limit the rotation of the inner door frame 2.

[0028] Preferred, such as Figure 5 As shown, the rotating seat 3 is located at the top and bottom of the inner door frame 2 respectively. Preferably, the rotating seat 3 is welded or screwed to the outer door frame 1. The rotating seat 3 can be a connecting seat with a pin or a connecting seat with a turntable. The rotating seat 3 is a common turntable or rotating part on the market, with many models. Those skilled in the art can select the appropriate rotating seat 3 according to the specific situation, which will not be elaborated here.

[0029] Preferably, both the second limiting plate 6 and the first limiting plate 5 are rectangular plate structures.

[0030] Preferred, such as Figure 2 and Figure 3 As shown, the outer door frame 1 is provided with a guide rail, and the second limiting plate 6 is slidably connected to the outer door frame 1 through the guide rail. The guide rail is a dovetail-shaped guide rail. The guide rail can be installed on the outside of the outer door frame 1, or a groove can be cut on the outer door frame 1 and the guide rail can be installed in the groove. It is preferred to install the guide rail in the groove. The dovetail-shaped guide rail can provide a good limiting effect while satisfying the sliding function, preventing the second limiting plate 6 from separating from the outer door frame 1.

[0031] Preferably, both the inner door frame 2 and the outer door frame 1 are rectangular.

[0032] Preferably, both the inner door frame 2 and the outer door frame 1 are spliced ​​together from I-beams, making the spliced ​​inner door frame 2 and outer door frame 1 more suitable for maintenance, replacement and disassembly.

[0033] Preferably, both the first limiting plate 5 and the second limiting plate 6 are provided with sealing strips on the side opposite to the inner door frame 2. The sealing strips are used to seal the gap between the inner door frame 2 and the outer door frame 1, thereby improving the isolation effect against wind in the roadway.

[0034] Preferred, such as Figure 2 and Figure 3 As shown, the second limiting plate 6 is provided with a fixing pin 8, and pin holes 9 are provided in both the outer door frame 1 and the limiting groove 7. The fixing pin 8 is inserted into the pin hole 9, which can fix the second limiting plate 6 to the outer door frame 1 and the second limiting plate 6 to the inner door frame 2, so as to prevent shaking and relative displacement.

[0035] Preferably, the fixing pin 8 and the pin hole 9 are connected by a thread, thereby ensuring the connection between the fixing pin 8 and the pin shaft is fixed.

[0036] During installation, such as Figure 1 and Figure 4 As shown, first, the outer door frame 1 is fixed to the outer alleyway or wall. Then, the rotating seat 3 is fixed to the inner side of the outer door frame 1 by welding or screws. Specifically, it is installed in the middle of the top beam and the middle of the bottom beam of the outer door frame 1. Rotate the rotating seat 3 so that the opening of the groove 4 is perpendicular to the placement direction of the outer door frame 1. Then, insert the inner door frame 2, which is equipped with the forward and reverse air doors, into the groove 4 in a direction perpendicular to the outer door frame 1, so that the rotating seat 3 is located in the middle position of the inner door frame 2. Then, rotate the inner door frame 2 to a position parallel to the outer door frame 1. At this time, the first limiting plate 5 limits the continued rotation of the inner door frame 2. Then, remove the four fixing pins 8 on the second limiting plate 6. Preferably, there are four fixing pins 8 on the second limiting plate 6, located around the second limiting plate 6. The outer door frame 1 has four corresponding pin holes 9, and the inner door frame 2 has two corresponding pin holes 9 in the limiting groove 7. The second limiting plate 6 slides relative to the outer door frame 1 and enters the limiting groove 7. Two fixing pins 8 are inserted into the two pin holes 9 at the bottom of the outer door frame 1 to fix the second limiting plate 6 to the outer door frame 1. Then, the remaining two fixing pins 8 are inserted into the two pin holes 9 in the limiting groove 7 to fix the second limiting plate 6 to the inner door frame 2. This completes the relative fixation of the inner door frame 2 and the outer door frame 1. The inner door frame 2 and the outer door frame 1 are overlapped and fixed together. When the outer door frame 1 or the inner door frame 2 is deformed and needs to be replaced, the second limiting plate 6 is reset first, and then the inner door frame 2 is rotated to be perpendicular to the outer door frame 1, so that the inner door frame 2 can be easily pulled out from the rotating seat 3 to complete the disassembly and separation of the inner door frame 2 and the outer door frame 1.

[0037] This utility model discloses a rotary airlock frame for coal mine roadways. The airlock frame is designed as a dual-frame structure, consisting of an inner and outer frame, rather than a single frame. This distributes the functions of supporting and fixing the forward and reverse airlocks to the outer frame 1 and the inner frame 2, respectively. During installation, the linkage mechanism on the forward and reverse airlocks involves drilling holes in the inner frame 2. Although this affects the mechanical properties of the inner frame 2, the outer frame 1 provides the supporting function. The outer frame 1 only has a rotating seat 3 installed and no other holes. The inner frame 2 and outer frame 1 each perform their respective functions without affecting each other. This ensures the supporting function of the outer frame 1, preventing deformation, and also guarantees the smooth installation of the forward and reverse airlocks. Normal use; and even if the inner door frame 2 or the outer door frame 1 is deformed and needs to be repaired or replaced, the presence of the rotating seat 3 makes the disassembly and separation of the outer door frame 1 and the inner door frame 2 quicker. Just lift the second limiting plate 6, rotate the inner door frame 2 to be perpendicular to the outer door frame 1, and pull the inner door frame 2 out of the groove 4 of the rotating seat 3 to separate the inner door frame 2 from the outer door frame 1. At that time, if you want to replace the inner door frame 2, you can replace the inner door frame 2, and if you want to replace the outer door frame 1, you can replace the outer door frame 1 separately. There is no need to disassemble the forward and reverse dampers and their linkage mechanisms. Compared with traditional technology, this technical solution eliminates multiple disassembly procedures and improves the disassembly and installation efficiency of the damper frame.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A rotating ventilation door frame for coal mine roadways, comprising an outer door frame (1) for support and fixation, characterized in that: It also includes an inner door frame (2) placed inside the outer door frame (1) and used for installing the damper. A rotating seat (3) is provided between the outer door frame (1) and the inner door frame (2). One end of the rotating seat (3) is rotatably connected to the outer door frame (1), and the other end of the rotating seat (3) is provided with a groove (4) for the inner door frame (2) to pass through. The inner door frame (2) rotates relative to the outer door frame (1) through the rotating seat (3). The outer door frame (1) is fixedly connected to a first limiting plate (5), which is located on one side of the inner door frame (2) and limits the rotation of the inner door frame (2); The outer door frame (1) is slidably connected to a second limiting plate (6), which is located on the opposite side of the first limiting plate (5). The outer door frame (1) has a limiting groove (7) for accommodating the second limiting plate (6). When the inner door frame (2) rotates to coincide with the outer door frame (1), the second limiting plate (6) extends out from the limiting groove (7) to limit the rotation of the inner door frame (2).

2. The rotary air door frame for coal mine roadways according to claim 1, characterized in that: The rotating seat (3) is located at the top and bottom of the inner door frame (2).

3. The rotary air door frame for coal mine roadways according to claim 1, characterized in that: Both the second limiting plate (6) and the first limiting plate (5) are rectangular plate structures.

4. The rotary air door frame for coal mine roadways according to claim 1 or 3, characterized in that: The outer door frame (1) is provided with a guide rail, and the second limiting plate (6) is slidably connected to the outer door frame (1) through the guide rail. The guide rail is a dovetail-shaped guide rail.

5. The rotary air door frame for coal mine roadways according to claim 1, characterized in that: Both the inner door frame (2) and the outer door frame (1) are rectangular.

6. The rotary air door frame for coal mine roadways according to claim 1, characterized in that: Both the inner door frame (2) and the outer door frame (1) are made of I-beams spliced ​​together.

7. The rotary ventilation door frame for coal mine roadways according to claim 1, 3, 5, or 6, characterized in that: Sealing strips are provided on the side of the first limiting plate (5) and the second limiting plate (6) opposite to the inner door frame (2).

8. The rotary ventilation door frame for coal mine roadways according to claim 1, characterized in that: The second limiting plate (6) is provided with a fixing pin (8), and pin holes (9) are provided in the inner door frame (2) and the limiting groove (7).

9. The rotary air door frame for coal mine roadways according to claim 8, characterized in that: The fixing pin (8) and the pin hole (9) are threaded together.

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