Large-section double-open thin-shell waterproof gate

Abstract

The utility model provides a large-section double-open thin-shell waterproof gate, and belongs to the technical field of mining machinery. Comprising a door frame, door leaves, rotary supporting mechanisms and two oil cylinders, the door leaves are hinged to the door frame through the rotary supporting mechanisms, and the two oil cylinders drive the two door leaves to be opened and closed correspondingly; each door leaf is formed by welding an end plate, a plurality of side plates and a plurality of arc-shaped shell plates, and when the door leaves are closed, the two door leaves are exactly spliced into a curved surface of which the middle part protrudes towards one side with water; the side plates on the two door leaves incline towards the centers of the door leaves by 45 degrees, the door frame is provided with a plurality of pressure-bearing plates, and when the door leaves are closed, the side plates on the door leaves are exactly overlapped with the corresponding pressure-bearing plates in a matched mode. A closing strip is fixed to the position, where the end plate is located, of one door leaf, the cross section of the closing strip is exactly matched with the two side plates, close to each other, of the two door leaves, and a sealing strip is fixed to the outer side face of each side plate. The sealing structure has the advantages of high compressive strength, good sealing performance and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining machinery and relates to a large-section double-opening thin-shell waterproof gate. Background Art

[0002] The waterproof gate is set in the area under the mine that may be threatened by water damage. It is a mine waterproof facility with a door designed to prevent the sudden inrush of water in the mine from causing harm and loss to life and property. In the early years, the cross-section of the mine tunnel was small and the degree of mechanization was not high, so most of the waterproof gates were single-opening, divided into left-opening and right-opening, and the opening direction was against the direction of the water flow. The production standard was based on MT258-91. As the scale of mining is getting larger and larger, the degree of mechanization is getting higher and higher. The previous tunnel cross-sectional size can no longer meet the requirements. Therefore, in order to adapt to modern production machinery, the tunnel is getting bigger and bigger, and the waterproof gate can only be made bigger and bigger. This puts higher and higher pressure requirements on the waterproof gate. We know that the pressure borne by the gate is proportional to the area of ​​the gate. The larger the gate, the higher the pressure, but the gate stiffness and strength of the same thickness material decrease, so the single-open waterproof gate can no longer meet the pressure requirements.

[0003] There is also a double-opening waterproof gate on the market, but this double-opening waterproof gate is actually composed of two single-opening waterproof gates, which simply enlarges the door frame. Since the single-opening waterproof gate adopts a hyperbolic structure, the pressure on the door is dispersed to the surrounding door frames to the concrete, but the part where the two single-opening doors of this double-opening waterproof gate are connected has no door frame and cannot be divided. It is the weakest position, so the pressure-bearing capacity is limited. In addition, the current mining of mines is getting deeper and deeper, reaching 1,000 meters below the ground, so it is difficult to adapt to the pressure requirements of deep wells. Under this circumstance, we invented a large-section high-pressure double-opening waterproof gate. Utility Model Content

[0004] The purpose of the utility model is to provide a large-section double-opening thin-shell waterproof gate in view of the above-mentioned problems existing in the prior art, aiming to improve the strength of the large-section waterproof gate in the mine in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a large-section double-open thin-shell waterproof gate, characterized in that the waterproof gate includes a door frame, a door leaf, a rotating support mechanism and two oil cylinders, each of the door leaves is hinged on the door frame through a rotating support mechanism, and the two oil cylinders drive the opening and closing of the two door leaves respectively; each of the door leaves is welded by an end plate, a plurality of side plates and a plurality of arc-shaped shell plates, and when the door leaves are closed, the two door leaves are just pieced together into a curved surface with a central part convex to the water side; the side plates on the two door leaves are inclined at an angle of 45 degrees to the center of the door leaves, the door frame has a plurality of pressure plates, and when the door leaves are closed, the side plates on each door leaf just fit and overlap with the corresponding pressure plates; a closing strip is fixed on one of the door leaves at the position of the end plate, and the cross section of the closing strip just fits with the two side plates close to each other on the two door leaves, and a sealing strip is fixed on the outer side of each side plate.

[0006] Preferably, the door frame is composed of two "C"-shaped frames, each of which is welded by a bottom plate, a middle plate, a rib plate, a pressure plate and a connecting plate, and when the two "C"-shaped frames are spliced ​​together, each bottom plate forms a square cone; an asbestos sheet is provided between the two connecting plates at the splicing point of the two "C"-shaped frames to separate them.

[0007] Preferably, a plurality of cross-arranged reinforcing ribs are welded inside each of the door leaves.

[0008] Preferably, the rotating support mechanism includes a plurality of bearing seats fixed on both sides of the door frame, each bearing seat is rotatably connected to a core shaft, each core shaft is rotatably connected to the corresponding bearing seat through a tapered roller bearing and a deep groove ball bearing, and each bearing seat is also detachably connected to end covers at both ends.

[0009] The utility model has the advantages:

[0010] 1. In this waterproof gate, both door frames are convex toward the water side, thereby increasing the contact area with water, reducing pressure and improving its compressive strength.

[0011] 2. In this waterproof gate, a closing strip is fixed on one of the door leaves, which can play the role of a "door frame" and can share the pressure between the two door leaves, thereby greatly enhancing the strength of the weakest position of the waterproof gate (the junction of the door leaves).

[0012] 3. In this waterproof gate, the pressure plate on the door frame and the side plate on the door leaf are arranged at a 45-degree angle to fit each other, and each side plate is provided with a sealing strip, so that under the action of water pressure, the door leaves and the door leaves and the door frame are more tightly connected, that is, the greater the water pressure, the better the sealing.

[0013] 4. The bottom plates of the door frame of the waterproof gate just form a square cone, which can partially convert the water pressure acting on the door frame into an outward thrust along the inner wall of the chamber. The force along the direction of the chamber will be reduced, thereby making the installation of the door frame more stable and further improving its compressive strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the waterproof gate.

[0015] Figure 2 It is a schematic diagram of the overhead structure of the waterproof gate.

[0016] Figure 3 It is a three-dimensional structural diagram of the door frame.

[0017] Figure 4 It is the installation diagram of this waterproof gate.

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the rotating support mechanism.

[0019] In the figure, 1. door frame; 11. pressure plate; 12. bottom plate 13. middle plate; 14. rib plate; 15. connecting plate; 16. asbestos sheet; 2. door leaf; 21. end plate; 22. side plate; 23. shell plate; 24. closing strip; 25. sealing strip; 26. reinforcing rib; 3. oil cylinder; 4. rotating support mechanism; 41. bearing seat; 42. core shaft; 43. tapered roller bearing; 44. deep groove ball bearing; 45. end cover; 5. chamber. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1 and Figure 2As shown, a large-section double-open thin-shell waterproof gate comprises a door frame 1, door leaves 2, a rotating support mechanism 4 and two oil cylinders 3. Each door leaf 2 is hinged to the door frame 1 through the rotating support mechanism 4, and the two oil cylinders 3 drive the opening and closing of the two door leaves 2 respectively; each door leaf 2 is welded by an end plate 21, a plurality of side plates 22 and a plurality of arc-shaped shell plates 23, and when the door leaf 2 is closed, the two door leaves 2 are just assembled into a curved surface with a central part convex toward the water side; the side plates 22 on the two door leaves 2 are convex to the door leaves 2, and the two side plates 22 on the two door leaves 2 are convex to the water side. 2 is inclined at a 45-degree angle, and a plurality of pressure plates 11 are provided on the door frame 1, and when the door leaf 2 is closed, the side plates 22 on each door leaf 2 coincide with and overlap with the corresponding pressure plates 11; a closing strip 24 is fixed on one of the door leaves 2 at the position of the end plate 21, and the cross section of the closing strip 24 coincides with the two side plates 22 close to each other on the two door leaves 2, and a sealing strip 25 is fixed on the outer side of each side plate 22, and a plurality of cross-arranged reinforcing ribs 26 are welded inside each door leaf 2.

[0022] In this waterproof gate, both door frames 1 are convex toward the water side, thereby increasing the contact area with water, reducing pressure, and improving its compressive strength. Furthermore, a closing strip 24 is fixed on one of the door leaves 2, which can play the role of "door frame 1" and can divide the pressure between the two door leaves 2, thereby greatly strengthening the strength of the weakest position of the waterproof gate (the junction of the door leaves 2). In addition, in this waterproof gate, the pressure plate 11 on the door frame 1 and the side plate 22 on the door leaf 2 are arranged at 45 degrees to fit each other, and each side plate 22 is provided with a sealing strip 25, so that under the action of water pressure, the door leaves 2 and the door leaves 2, and the door leaves 2 and the door frame 1 are more tightly connected, that is, the greater the water pressure, the better the sealing. After the pressure test, when the door leaf 2 of the waterproof gate reaches 7.6MPa, the deformation amount at each position meets the design requirements.

[0023] like Figure 3 As shown, the door frame 1 is composed of two "C"-shaped frames, each of which is welded by a bottom plate 12, a middle plate 13, a rib plate 14, a pressure plate 11 and a connecting plate 15, and when the two "C"-shaped frames are spliced ​​together, each bottom plate 12 forms a square cone; an asbestos sheet 16 is provided between the two connecting plates 15 at the splicing point of the two "C"-shaped frames to separate them.

[0024] like Figure 4As shown, before installing the waterproof gate, the door frame 1 needs to be poured into the concrete wall of the chamber 5. The door frame 1 is the foundation for the installation of the waterproof gate. The pressure borne by the waterproof gate is evenly transmitted to the concrete wall of the chamber 5 through the door frame 1. The bottom plates 12 of the door frame 1 of the waterproof gate just form a square cone. When we install it, the larger end of the square cone faces the water side. In this way, the water pressure acting on the door frame 1 will be partially converted into an outward thrust along the inner wall of the chamber 5, and its force along the direction of the chamber 5 will be reduced, thereby making the installation of the door frame 1 more stable and improving its compressive strength again.

[0025] like Figure 5 As shown, the rotary support mechanism 4 includes a plurality of bearing seats 41 fixed on both sides of the door frame 1, and each bearing seat 41 is rotatably connected with a core shaft 42. Each core shaft 42 is rotatably connected to the corresponding bearing seat 41 through a tapered roller bearing 43 and a deep groove ball bearing 44. The two ends of each bearing seat 41 are also detachably connected with an end cover 45. The door leaf 2 is supported by the rotary support mechanism 4 on both sides. Since the waterproof gate needs to withstand very high pressure, the steel plate is relatively thick, and the single-sided door leaf 2 can weigh several tons. This puts strict requirements on the structure of the rotary support mechanism 4. The rotary support mechanism 4 structure not only needs to withstand the dead weight of the left and right door leaves 2 for a long time, but also requires to be able to rotate freely. The rotary support device adopts a combination of a tapered roller bearing 43 and a deep groove ball bearing 44. The tapered roller bearing 43 mainly bears the axial force, and the deep groove ball bearing 44 plays a centering role and bears a considerable part of the radial force. The core shaft 42 is made of medium carbon steel quenched and tempered to increase strength and hardness. During installation, the core shaft 42 is facing upwards, and the connecting seat on the door leaf 2 is simply hung upwards. The structure is simple and practical.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A large-section double-opening thin-shell waterproof gate, characterized in that: The waterproof gate comprises a door frame (1), a door leaf (2), a rotating support mechanism (4) and two oil cylinders (3); each of the door leaves (2) is hinged on the door frame (1) through the rotating support mechanism (4); the two oil cylinders (3) respectively drive the two door leaves (2) to open and close; each of the door leaves (2) is welded by an end plate (21), a plurality of side plates (22) and a plurality of arc-shaped shell plates (23); when the door leaves (2) are closed, the two door leaves (2) are just assembled into a curved surface with a central portion convex toward the water side; the side plates on the two door leaves (2) are The plates (22) are all inclined at an angle of 45 degrees toward the center of the door leaf (2). The door frame (1) is provided with a plurality of pressure plates (11). When the door leaf (2) is closed, the side plates (22) on each door leaf (2) coincide with and overlap with the corresponding pressure plates (11). A closing strip (24) is fixed on one of the door leaves (2) at the position where the end plate (21) is located. The cross section of the closing strip (24) coincides with two side plates (22) close to each other on the two door leaves (2). A sealing strip (25) is fixed on the outer side surface of each side plate (22).

2. A large-section double-opening thin-shell waterproof gate according to claim 1, characterized in that: The door frame (1) is formed by splicing two "C"-shaped frames, each of which is welded together by a bottom plate (12), a middle plate (13), a rib plate (14), a pressure plate (11) and a connecting plate (15), and when the two "C"-shaped frames are spliced ​​together, each bottom plate (12) forms a square cone; an asbestos sheet (16) is provided between the two connecting plates (15) at the splicing point of the two "C"-shaped frames to separate them.

3. A large-section double-opening thin-shell waterproof gate according to claim 1, characterized in that: A plurality of cross-arranged reinforcing ribs (26) are welded inside each door leaf (2).

4. A large-section double-opening thin-shell waterproof gate according to claim 1, characterized in that: The rotating support mechanism (4) comprises a plurality of bearing seats (41) fixed on both sides of the door frame (1), each bearing seat (41) is rotatably connected to a core shaft (42), each core shaft (42) is rotatably connected to the corresponding bearing seat (41) via a tapered roller bearing (43) and a deep groove ball bearing (44), and each bearing seat (41) is detachably connected to an end cover (45) at both ends.

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