Linked switch device of positive and negative air doors for coal mine

Abstract

The utility model provides a linked switch device of positive and negative air doors for a coal mine, which relates to the technical field of coal mine facilities and comprises a shaft assembly and a gear assembly, the shaft assembly comprises a front shaft and a rear shaft, the front shaft is rotatably arranged at the front ends of two sides in a door frame, and the rear shaft is rotatably arranged at the rear ends of two sides in the door frame; the front shaft, the rear shaft, the front gear and the rear gear are additionally arranged in the door frame, the front air door is in linkage with the front shaft through the front connecting frame, the reverse air door is in linkage with the rear shaft through the rear connecting frame, and when the pneumatic assembly drives the front air door to be opened or closed, the front shaft connected with the front air door rotates synchronously. And the back gear and the back shaft are driven to synchronously and reversely rotate, so that the reverse air door is synchronously opened and closed, linked and locked and is in gear meshing transmission along with the forward air door, the number of required pneumatic cylinders is reduced, the airflow stroke is shortened, and the transmission mechanism has the advantages of stable and reliable transmission, high transmission precision, large bearing capacity and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine facilities technical field especially relates to a linkage switch device of positive and negative air door for coal mine. BACKGROUND

[0002] According to the coal mine safety regulation regulation: between and main, return air shaft every tie -in lane in the lane, must build permanent wind wall, need to use tie -in lane, must set up 2 interlocking positive air door and 2 negative air door,

[0003] The traditional positive and negative air door for coal mine underground only realizes the linkage locking of two positive air doors, and two negative air doors are in the long-term open state, in order to solve this problem, in the prior art, a cylinder is additionally installed at two negative air doors, realizing the automatic opening and closing of the negative air door, and in the long-term operation process, it is found that the modification mode has the following disadvantages:

[0004] After the negative air door is additionally installed with the cylinder, plus the driving structure of the positive air door, a plurality of cylinders are counted, generally only one total air inlet source, at the same time, in order to ensure the opening and closing sequence of the air door, the inlet and return air volume of each cylinder needs to be controlled, causing that the air door opening and closing speed is slow, affecting the efficiency of personnel passing and material transportation, after the negative air door is additionally installed with the cylinder, the overall airflow running route is doubled, and the number of cylinders is doubled, too long airflow running route and too many cylinder numbers cause that the stability of the overall air door operation is poor, the situation that one air door is closed and another air door is opened at once frequently appears, the strictness of the linkage locking function is greatly reduced, and the coal mine ventilation system is easily disturbed, therefore, the utility model provides a linkage switch device of positive and negative air door for coal mine to solve the problems in the prior art. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problems, the utility model provides a linkage switch device of positive and negative air door for coal mine, the linkage switch device of positive and negative air door for coal mine adopts gear meshing transmission, reduces the number of required air cylinders, shortens the airflow stroke, has the advantages of stable and reliable transmission, high transmission precision and large carrying capacity, and greatly improves the stability and reliability of the positive and negative air door operation.

[0006] In order to realize the purpose of the utility model, the utility model realizes the following technical scheme: a linkage switch device of positive and negative air door for coal mine, including shaft assembly and gear assembly, the shaft assembly includes front shaft and rear shaft, the front shaft is rotatably arranged at the front end of the door frame on both sides, the rear shaft is rotatably arranged at the rear end of the door frame on both sides, and the upper and lower sides of the door frame on both sides are provided with openings;

[0007] The gear assembly comprises a front gear and a rear gear, the front gear is located on the front shaft at an opening position, the rear gear is located on the rear shaft at an opening position, the front gear and the rear gear are meshed with each other, the front shaft is provided with a front connecting frame, and the front connecting frame is connected with a positive air door through the opening, the rear shaft is provided with a rear connecting frame, and the rear connecting frame is connected with a reverse air door through the opening, and the positive air door is controlled to open and close through a pneumatic assembly.

[0008] Further improvement lies in that the front connecting frame and the rear connecting frame at the opening position are each provided with at least two groups, the two groups of the front connecting frame are located at upper and lower end positions of the front gear respectively, and the two groups of the rear connecting frame are located at upper and lower end positions of the rear gear respectively.

[0009] Further improvement lies in that the door frame is fixed in a wind wall, and the front shaft and the rear shaft are rotatably arranged in the interior of the door frame through bearing seats.

[0010] Further improvement lies in that the front gear, the front connecting frame and the front shaft are fixed and synchronously rotated, and the rear gear, the rear connecting frame and the rear shaft are fixed and synchronously rotated.

[0011] Further improvement lies in that the pneumatic assembly comprises a supporting plate, a cylinder and a linkage plate, the supporting plate is provided with two groups, the two groups of the supporting plate are arranged on two sides below the front end of the wind wall respectively, the front end of the top of the two groups of the supporting plate is provided with a hinged seat, the cylinder is provided with two groups, one end of the two groups of the cylinder is hinged on the two groups of the hinged seats respectively, the linkage plate is arranged below the front end of the positive air door on the two sides, and the output end of the two groups of the cylinder is hinged with the two groups of the linkage plates respectively.

[0012] Further improvement lies in that the inner side of the outer end of the positive air door and the reverse air door is provided with a handle respectively, and the upper side of the interior of the positive air door and the reverse air door is provided with a visible window.

[0013] The utility model discloses a door frame is provided with the front shaft and the rear shaft, and the front gear and the rear gear are meshed with each other, and the positive air door and the reverse air door are connected through the front connecting frame and the rear connecting frame respectively, and the positive air door is controlled to open and close through the pneumatic assembly.

[0014] 1、the utility model discloses a door frame is provided with the front shaft and the rear shaft, and the front gear and the rear gear are meshed with each other, and the positive air door and the reverse air door are connected through the front connecting frame and the rear connecting frame respectively, and the positive air door is controlled to open and close through the pneumatic assembly.

[0015] 2, the utility model discloses only need to use the cylinder of pneumatic assembly to drive positive air door switch can realize the synchronous switch of reverse air door, improves the efficiency of personnel passage, material transportation, eliminates the security risk of positive and reverse air door linkage locking not rigorous, improves the stability, reliability of mine ventilation system operation, reduces the cost of air door construction and later maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is the front view of the utility model; Figure 1 It is the structure schematic view of A place in the utility model;

[0018] Figure 3 It is the front view of the utility model; Figure 1 It is the structure schematic view of B place in the utility model;

[0019] Figure 4 It is the wind wall schematic view of the utility model;

[0020] Figure 5 It is the overhead schematic view of the pneumatic assembly of the utility model.

[0021] Wherein: 1, front axle; 2, rear axle; 3, door frame; 4, front gear; 5, rear gear; 6, opening; 7, front connecting frame; 8, positive air door; 9, rear connecting frame; 10, reverse air door; 11, wind wall; 12, supporting plate; 13, cylinder; 14, linkage plate; 15, hinged seat. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the utility model, the utility model will be further described in conjunction with the embodiment below, and the embodiment is only used to explain the utility model, and does not constitute the limitation to the protection scope of the utility model.

[0023] Embodiment one

[0024] According to Figure 1 、 2 , 3, 4, 5, the embodiment proposes a linkage switch device of positive and reverse air door for coal mine, including axle assembly and gear assembly, the axle assembly includes front axle 1 and rear axle 2, the front axle 1 is rotationally arranged at the front end of both sides inside the door frame 3, the rear axle 2 is rotationally arranged at the rear end of both sides inside the door frame 3, and the upper and lower sides of both sides inside the door frame 3 are provided with openings 6;

[0025] The gear assembly comprises a front gear 4 and a rear gear 5, the front gear 4 is located on the front shaft 1 at the position of the opening 6, the rear gear 5 is located on the rear shaft 2 at the position of the opening 6, the front gear 4 and the rear gear 5 are adjacent to each other and mesh with each other, the front shaft 1 is provided with a front connecting frame 7, and the front connecting frame 7 connects the positive air door 8 through the opening, the rear shaft 2 is provided with a rear connecting frame 9, and the rear connecting frame 9 connects the reverse air door 10 through the opening, and the positive air door 8 is controlled to open and close by the pneumatic assembly. In use, the front shaft 1, the rear shaft 2 and the front gear 4 and the rear gear 5 meshing with each other are additionally installed in the door frame 3, the positive air door 8 is linked with the front shaft 1 through the front connecting frame 7, the reverse air door 10 is linked with the rear shaft 2 through the rear connecting frame 9, when the pneumatic assembly drives the positive air door 8 to open or close, the front shaft 1 connected with the positive air door 8 rotates synchronously, by the meshing effect of the front gear 4 and the rear gear 5, the rear gear 5 and the rear shaft 2 are driven to rotate reversely synchronously, so that the reverse air door 10 is opened and closed synchronously with the positive air door 8 and is linked and locked.

[0026] The front connecting frame 7 and the rear connecting frame 9 at the position of the opening 6 are each provided with two groups, the two groups of front connecting frames 7 are respectively located at the upper and lower end positions of the front gear 4, and the two groups of rear connecting frames 9 are respectively located at the upper and lower end positions of the rear gear 5. At each opening 6, the front shaft 1 connects the positive air door 8 through the two groups of front connecting frames 7, and the rear shaft 2 connects the reverse air door 10 through the two groups of rear connecting frames 9, thereby improving the stability of the connection.

[0027] The door frame 3 is fixed in the air wall 11, and the front shaft 1 and the rear shaft 2 are rotatably arranged in the interior of the door frame 3 through bearing seats. The front gear 4, the front connecting frame 7 and the front shaft 1 are fixed and rotate synchronously, and the rear gear 5, the rear connecting frame 9 and the rear shaft 2 are fixed and rotate synchronously. When the pneumatic assembly drives the positive air door 8 to open or close, the front shaft 1 connected with the positive air door 8 rotates synchronously, by the meshing effect of the front gear 4 and the rear gear 5, the rear gear 5 and the rear shaft 2 are driven to rotate reversely synchronously, so that the reverse air door 10 is opened and closed synchronously with the positive air door 8 and is linked and locked.

[0028] Embodiment two

[0029] According to Figure 1 , 2 , 3, 4, 5, the embodiment provides a linkage opening and closing device for positive and reverse air doors for coal mines, which comprises a shaft assembly and a gear assembly, the shaft assembly comprises a front shaft 1 and a rear shaft 2, the front shaft 1 is rotatably arranged at the front end of the two sides in the interior of a door frame 3, the rear shaft 2 is rotatably arranged at the rear end of the two sides in the interior of the door frame 3, and the upper and lower sides of the two sides in the interior of the door frame 3 are each provided with an opening 6;

[0030] The gear assembly comprises a front gear 4 and a rear gear 5, the front gear 4 is located on the front axle 1 at the position of the opening 6, the rear gear 5 is located on the rear axle 2 at the position of the opening 6, the front gear 4 and the rear gear 5 are adjacent to each other and mesh with each other, the front axle 1 is provided with a front connecting frame 7, and the front connecting frame 7 connects the positive air door 8 through the opening, the rear axle 2 is provided with a rear connecting frame 9, and the rear connecting frame 9 connects the reverse air door 10 through the opening, and the positive air door 8 is controlled to open and close by the pneumatic assembly. In use, the front axle 1, the rear axle 2 and the front gear 4 and the rear gear 5 meshing with each other are additionally installed in the door frame 3, the positive air door 8 is linked with the front axle 1 through the front connecting frame 7, the reverse air door 10 is linked with the rear axle 2 through the rear connecting frame 9, when the pneumatic assembly drives the positive air door 8 to open or close, the front axle 1 connected with the positive air door 8 rotates synchronously, and the meshing of the front gear 4 and the rear gear 5 drives the rear gear 5 and the rear axle 2 to rotate reversely synchronously, so that the reverse air door 10 is opened and closed synchronously with the positive air door 8 and is linked and locked.

[0031] The pneumatic assembly comprises a supporting plate 12, a cylinder 13 and a linkage plate 14, the supporting plate 12 is provided with two groups, and the two groups of supporting plates 12 are respectively arranged on the two sides below the front end of the air wall 11, and the front end of the top of the two groups of supporting plates 12 is provided with a hinged seat 15, the cylinder 13 is provided with two groups, and one end of the two groups of cylinders 13 is respectively hinged on the two groups of hinged seats 15, the linkage plate 14 is arranged below the front end of the positive air door 8 on the two sides, and the output end of the two groups of cylinders 13 is respectively hinged with the two groups of linkage plates 14. In use, through the hinged action of the cylinder 13 and the hinged seat 15, and the hinged action of the output end and the linkage plate 14, and cooperating with the telescopic function of the cylinder 13 itself, the positive air door 8 can be driven to rotate to close or open based on the front axle 1. The output end of the cylinder 13 is movably inserted into the linkage plate 14 through the insertion rod to be hingedly connected, and the other end of the cylinder 13 is movably sleeved on the hinged seat 15 to be hingedly connected, and the connecting structure is convenient to disassemble.

[0032] The inner side of the outer end of the positive air door 8 and the reverse air door 10 is provided with a handle, when the cylinder 13 is disassembled, the positive air door 8 and the reverse air door 10 can be pulled open through the handle, and the upper part of the inside of the positive air door 8 and the reverse air door 10 is provided with a visible window.

[0033] The linkage switch device of the coal mine forward and reverse air door is provided with a front shaft 1, a rear shaft 2 and a front gear 4 and a rear gear 5 meshing with each other in a door frame 3, a forward air door 8 is linked with the front shaft 1 through a front connecting frame 7, a reverse air door 10 is linked with the rear shaft 2 through a rear connecting frame 9, when the pneumatic assembly drives the forward air door 8 to open or close, the front shaft 1 connected with the forward air door 8 rotates synchronously, the reverse air door 10 is opened or closed synchronously with the forward air door 8 through the meshing of the front gear 4 and the rear gear 5, the rear shaft 2 and the rear gear 5 rotate reversely synchronously, the reverse air door 10 is locked synchronously with the forward air door 8, the gear meshing transmission reduces the number of required pneumatic cylinders, shortens the air flow stroke, has the advantages of stable and reliable transmission, high transmission precision, large carrying capacity and the like, greatly improves the stability and reliability of the forward and reverse air door operation, meanwhile, the product only needs to use the cylinder 13 of the pneumatic assembly to drive the forward air door 8 to open and close, and can realize the synchronous opening and closing of the reverse air door 10, improves the personnel passing and material transportation efficiency, eliminates the safety hidden danger of the linkage locking of the forward and reverse air doors, improves the stability and reliability of the mine ventilation system operation, and reduces the cost of the air door construction and later maintenance.

[0034] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, the above examples and the description in the specification are only to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, these changes and improvements all fall into the scope of the utility model claimed to be protected. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A linkage switch device for a forward and reverse air door of a coal mine, comprising a shaft assembly and a gear assembly, characterized in that: The axle assembly comprises a front axle (1) and a rear axle (2), the front axle (1) is rotatably arranged at the front end of the door frame (3) on both sides, the rear axle (2) is rotatably arranged at the rear end of the door frame (3) on both sides, and the upper and lower sides of the door frame (3) on both sides are provided with openings (6); The gear assembly comprises a front gear (4) and a rear gear (5), the front gear (4) is arranged on the front axle (1) at the position of the opening (6), the rear gear (5) is arranged on the rear axle (2) at the position of the opening (6), the adjacent front gear (4) and rear gear (5) are engaged with each other, the front axle (1) is provided with a front connecting frame (7), and the front connecting frame (7) is connected with the positive air door (8) through the opening, the rear axle (2) is provided with a rear connecting frame (9), and the rear connecting frame (9) is connected with the reverse air door (10) through the opening, and the positive air door (8) is controlled to open and close by the pneumatic assembly.

2. The linkage switch device of a forward and reverse air door for coal mine according to claim 1, characterized in that: The front connecting frame (7) and the rear connecting frame (9) at the position of the opening (6) are each provided with at least two groups, the two groups of front connecting frames (7) are respectively arranged at the upper and lower end positions of the front gear (4), and the two groups of rear connecting frames (9) are respectively arranged at the upper and lower end positions of the rear gear (5).

3. The linkage switch device of claim 1, wherein: The door frame (3) is fixed in the air wall (11), and the front axle (1) and the rear axle (2) are rotatably arranged in the door frame (3) through the bearing seat.

4. The linkage switch device of claim 1, wherein: The front gear (4), the front connecting frame (7) and the front axle (1) are fixed and synchronously rotated, and the rear gear (5), the rear connecting frame (9) and the rear axle (2) are fixed and synchronously rotated.

5. The linkage switch device of claim 3, wherein: The pneumatic assembly comprises a supporting plate (12), a cylinder (13) and a linkage plate (14), the supporting plate (12) is provided with two groups, and the two groups of supporting plates (12) are respectively arranged on both sides below the front end of the air wall (11), and the front end of the top of the two groups of supporting plates (12) is provided with a hinge seat (15), the cylinder (13) is provided with two groups, and one end of the two groups of cylinders (13) is respectively hinged to the two groups of hinge seats (15), the linkage plate (14) is arranged below the front end of the positive air door (8) on both sides, and the output ends of the two groups of cylinders (13) are respectively hinged to the two groups of linkage plates (14).

6. The linkage switch device of claim 1, wherein: The inner side of the outer end of the positive air door (8) and the reverse air door (10) is provided with a handle, and the upper side of the inside of the positive air door (8) and the reverse air door (10) is provided with a visible window.

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