Quick opening and closing safety explosion door for refuge chamber

Abstract

The application discloses a quick opening and closing safety explosion-proof door for a refuge chamber, which comprises a door frame, a door body arranged on the door frame, the door body being of an integrated structure matched with the door frame, one end of the door body being connected with a hydraulic cylinder, a locking mechanism being arranged on the door body, and the hydraulic cylinder being controlled by a hydraulic system to assist the door body in lifting and lowering. The application solves the problem of slow opening and closing speed of the existing explosion-proof door for the refuge chamber.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mining equipment, and relates to a quick opening and closing safety explosion-proof door for a refuge chamber. BACKGROUND

[0002] The refuge chamber is used underground and serves as an important safety facility for avoiding accidents and escaping in mine operation, and the function and structure thereof are ensured based on possible accidents in the mine. When a gas explosion occurs underground in a disaster period, the refuge chamber can effectively ensure the safety of personnel, and the gas wave of the explosion can provide impact force for the explosion-proof door of the refuge chamber, so that the explosion-proof door prevents the invasion and diffusion of toxic gas into the refuge chamber. The explosion-proof door of the refuge chamber must be closed at any time and kept tight, and effective measures are needed to facilitate the quick opening of the explosion-proof door. The existing mine explosion-proof door is a door or multiple doors which are pushed open inwards through one side hinge structure. After being pushed open, the hinge structure affects the effective use area in the explosion-proof chamber, and the opening and closing speed is slow, which affects the stability and safety of the refuge chamber. SUMMARY

[0003] The application aims to provide a quick opening and closing safety explosion-proof door for a refuge chamber, and solve the problem of slow opening and closing speed of the existing explosion-proof door for a refuge chamber.

[0004] The technical scheme adopted by the application is that the quick opening and closing safety explosion-proof door for a refuge chamber comprises a door frame, a door body is arranged on the door frame, the door body is of an integrated structure matched with the door frame, one end of the door body is connected with a hydraulic cylinder, a locking mechanism is arranged on the door body, and the hydraulic cylinder is controlled by a hydraulic system to assist the lifting of the door body.

[0005] The application also has the characteristics that

[0006] The door frame comprises vertical stand rods arranged on both sides, a top plate is horizontally arranged on the top of the stand rods, slide rails are arranged along the sides of the stand rods and the top plate, two hydraulic cylinders are fixedly arranged at the end of the top plate away from the stand rods, the extension end of each hydraulic cylinder is connected with a sliding block, the sliding block is slidingly connected with the slide rail, the sliding block is hingedly connected with a connecting rod, the connecting rod is hingedly connected with the middle upper part of the two sides of the door body, the sliding block drives the movement of the connecting rod, and the connecting rod drives the upward overturning movement of the door body to the top plate in the refuge chamber.

[0007] A plurality of guide wheels are arranged at the edges of the two sides of the door body, the guide wheels are correspondingly connected with the slide rails, and the door body slides up and down along the slide rails to lift.

[0008] The locking mechanism comprises a fixed rod, the fixed rod is vertically installed at the center of the door body, a rotating rod is vertically installed on the fixed rod, the two ends of the rotating rod are connected with extension rods, the length of the rotating rod combined with the extension rods is greater than the width of the door body, the two ends of the rotating rod opposite to the diagonal line of the door body are connected with return springs, a protrusion is arranged at the end of the extension rod, and a groove is arranged at the corresponding position of the door frame.

[0009] The bottom plate is arranged between the bottoms of the two vertical rods, and a plurality of anti-collision wheels are arranged on the bottom plate close to one side in the refuge chamber. The anti-collision wheel comprises a right-angle groove, limit springs are arranged at two ends of the right-angle groove, the right-angle opening of the right-angle groove is limited by the limit springs and is opposite to the outside of the refuge chamber, the right-angle groove is rotatably connected to the bottom plate, a buffer rubber wheel is sleeved with a horizontal end of the right-angle groove, and the buffer rubber wheel is arranged in abutment with the bottom surface of the door body; a pressing rubber wheel is arranged at a vertical end of the right-angle groove, and the circumferential surface of the pressing rubber wheel is arranged in abutment with the side surface of the door body in opposite rotation.

[0010] The outer surface of the door body is a plane, and a reinforcing rib is arranged on the inner surface of the door body, and the inner surface is arc-shaped.

[0011] The beneficial effects of the present application are that the quick opening and closing safety explosion-proof door for a refuge chamber has an integrated door body, thereby ensuring the safety and stability of the explosion-proof door, and the door body is opened and closed in an up-down manner, thereby realizing quick opening and closing, the anti-collision wheels improve the durability of the door body and ensure the airtightness after the door is closed, the explosion-proof door has a simple structure, is convenient to operate, is economical and durable, and is stable, safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic diagram of the quick opening and closing safety explosion-proof door for a refuge chamber of the present application;

[0013] Figure 2 is a door body structure schematic diagram of the quick opening and closing safety explosion-proof door for a refuge chamber of the present application;

[0014] Figure 3 is an anti-collision wheel structure schematic diagram of the quick opening and closing safety explosion-proof door for a refuge chamber of the present application;

[0015] Figure 4 is a closed state schematic diagram of the quick opening and closing safety explosion-proof door for a refuge chamber of the present application;

[0016] Figure 5 is a moving state schematic diagram of the quick opening and closing safety explosion-proof door for a refuge chamber of the present application;

[0017] Figure 6 is an opened state schematic diagram of the quick opening and closing safety explosion-proof door for a refuge chamber of the present application.

[0018] In the figure, 1 is a door body, 2 is a hydraulic cylinder, 3 is a door frame, 4 is a locking mechanism, 5 is a sliding rail, 6 is a guide wheel, 7 is an anti-collision wheel, 8 is a connecting rod, and 9 is a sliding block. DETAILED DESCRIPTION

[0019] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0020] Embodiment 1

[0021] The quick opening and closing safety explosion-proof door for a refuge chamber of the present application has a structure asFigure 1 As shown, it includes a door frame 3, a door body 1 is set on the door frame 3, the door body 1 is an integral structure and cooperates with the door frame 3, one end of the door body 1 is connected to a hydraulic cylinder 2, a locking mechanism 4 is set on the door body 1, and the hydraulic cylinder 2 controls the lifting and lowering of the door body 1 through a hydraulic system.

[0022] Example 2

[0023] The door frame 3 includes vertically arranged uprights on both sides, and a top plate is horizontally arranged on the top of the uprights. The top plate extends into the refuge chamber. Slide rails 5 are arranged along the uprights and the top plate on both sides of the door frame 3. Two hydraulic cylinders 2 are fixedly arranged at the end of the top plate away from the uprights. The extended end of each hydraulic cylinder 2 is connected to a slider 9. The slider 9 slides and engages with the slide rail 5. The slider 9 moves horizontally on the top plate along the slide rail 5. The slider 9 is hinged to a connecting rod 8. The connecting rod 8 is hinged to the upper middle part of both sides of the door body 1. The slider 9 drives the connecting rod 8 to move. The connecting rod 8 pulls the door body 1 upward to the top plate inside the refuge chamber.

[0024] Several guide wheels 6 are set on both sides of the door body 1. The guide wheels 6 are engaged with the slide rails 5. The guide wheels 6 and the slide rails 5 cooperate with each other. The door body 1 slides up and down along the slide rails 5 of the door frame 3, which facilitates the opening and closing of the door body 1. The cooperation between the guide wheels 6 and the slide rails 5 can improve the lifting speed of the door body 1.

[0025] The slider 9 cooperates with the slide rail 5, the guide wheel 6 engages with the slide rail 5, the guide wheel 6 moves along the fixed track of the slide rail 5 without falling off the track, the slide rail 5 extends along the edge of the door frame 3 into the refuge chamber, the slide rail 5 is suspended in the refuge chamber by anchor rods, and a certain space is left above the refuge chamber to facilitate the lifting of the door 1.

[0026] Example 3

[0027] like Figure 2 As shown, a locking mechanism 4 is installed on the inner side of the door body 1 to close the explosion-proof door from the inside. The locking mechanism 4 includes a fixed rod, which is vertically installed at the center of the door body 1. A rotating rod is vertically installed on the fixed rod, and extension rods are connected to both ends of the rotating rod. The length of the rotating rod combined with the extension rods is greater than the width of the door body 1. Return springs are connected to the two ends of the rotating rod that are diagonally opposite to the door body 1. A protrusion is provided at the end of the extension rod, and a groove is provided at the corresponding position of the door frame 3. When the door body 1 is closed, the rotating rod rotates around the fixed rod, and the protrusion of the rotating rod engages with the groove of the door frame 3 for interlocking. When the door body 1 is opened, the tension of the return spring causes the rotating rod to return to its original position when it is stationary, aligning with the line opposite to the door body 1. The rotating rod locks and unlocks when the fixed rod rotates, and the extension rod makes contact with the door frame 3 by pressing.

[0028] A base plate is installed between the bottoms of the two uprights, and several anti-collision wheels 7 are installed on the base plate on the side closest to the refuge chamber. Figure 3As shown, the anti-collision wheel 7 includes a right-angle groove, which is connected to the base plate at a right angle. Limiting springs are set at both ends of the right-angle groove, limiting the right-angle opening of the right-angle groove to face the outside of the refuge chamber. A buffer rubber wheel is sleeved on the horizontal end of the right-angle groove, and the buffer rubber wheel is set to abut against the bottom surface of the door body 1. A pressing rubber wheel is set on the vertical end of the right-angle groove, and the circumferential surface of the pressing rubber wheel rotates relative to each other and abuts against the side of the door body 1. The anti-collision wheel 7 not only buffers the impact but also ensures the airtightness of the explosion-proof door. When the door body 1 falls, the gravity of the door body 1 causes the right-angle groove to rotate along the hinge of the base plate, and the pressing rubber wheel presses the door body 1 to ensure the airtightness of the door body 1.

[0029] The outer surface of door 1 is flat, and the inner surface of door 1 is reinforced with ribs and has an arc shape to improve the strength of door 1. Door 1 is made of steel plate material, and multiple reinforcing screws are installed between the outer and inner surfaces of door 1 to ensure the stability of the structure. Flexible door lining is added to the edge of door 1 to effectively improve the safety of the refuge chamber against poisoning.

[0030] The door body 1 is an integrated structure to ensure the safety and stability of the explosion-proof door. The door body 1 opens and closes vertically to achieve rapid opening and closing. Anti-collision wheels 7 are installed at the bottom of the door body 1 to improve the durability of the door body 1 and ensure the airtightness after closing. The invention has a simple structure, is easy to operate, economical and durable, and achieves rapid opening and closing. The sliding lifting and opening of the door body 1 will not occupy the space inside the refuge chamber. The integrated structure of the door body and the locking mechanism ensure safety.

[0031] The working principle of the quick-opening and closing explosion-proof safety door for refuge chambers of this invention is as follows: the door body is an integrated structure, which cooperates with the door frame slide rail through guide wheels, which can ensure its safety and reliability in underground refuge chambers and has sufficient impact resistance; the door body 1 has good sealing performance, the locking mechanism has good structural safety, meets the requirements of mine rescue, and the displacement change of the connection position of each part of the explosion-proof door is less than 1mm, which meets the rigidity requirements of the explosion-proof door.

[0032] The working process of the quick-opening and closing explosion-proof safety door for refuge chambers of the present invention is as follows: Figure 4 As shown, the hydraulic cylinder extends and pushes the connecting rod on the slider to move. The guide wheel on the door slides down along the slide rail until the bottom of the door presses against the door frame. The bottom buffer rubber wheel of the right-angle groove is located on the outside of the bottom of the door, and the pressing rubber wheel is located on the inside of the door, pressing the door. The extension rod on the rotating locking mechanism is rotated so that the protrusion at the end of the extension rod engages with the groove inside the locking door frame, completing the operation of quickly closing the explosion-proof door.

[0033] After the underground danger is eliminated, the rotating extension rod is released from its lock. The return spring pulls the extension rod back to its diagonal position on the door. The hydraulic cylinder extends and retracts, pulling back the connecting rod on the slider. The guide wheel on the door slides upward along the slide rail and rises. Figure 5As shown, the door body bottom leaves the door frame, the right angle opening of the right angle slot is pulled by the limiting spring to restore to the relative position outside the refuge chamber, and the door body is opened. Figure 6 As shown, the operation of the quick opening explosion-proof door is completed.

[0034] The refuge chamber is provided with the explosion-proof door of the application, which has super pressure resistance and can bear a pressure of up to 15 psi (0.10 Mpa) units, can protect the refuge chamber in an emergency underground, and enter the main chamber through the air-tight cabin. The quick opening and closing safety explosion-proof door of the refuge chamber is safe and reliable, convenient to avoid danger, low in construction cost, improves the ability of the mine to cope with disasters, improves the level of mine emergency rescue, and improves the safety and reliability of the entire refuge chamber.

Claims

1. A quick-opening and closing explosion-proof safety door for refuge chambers, characterized in that, Includes a door frame (3), a door body (1) is set on the door frame (3), the door body (1) is an integral structure that cooperates with the door frame (3), one end of the door body (1) is connected to a hydraulic cylinder (2), a locking mechanism (4) is set on the door body (1), and the hydraulic cylinder (2) controls the lifting and lowering of the auxiliary door body (1) through a hydraulic system; The door frame (3) includes vertical poles on both sides, a top plate on the top of the poles, and slide rails (5) arranged along both sides of the poles and the top plate. Two hydraulic cylinders (2) are fixedly installed at the end of the top plate away from the poles. The extended end of each hydraulic cylinder (2) is connected to a slider (9). The slider (9) slides and engages with the slide rail (5). The slider (9) is hinged to a connecting rod (8). The connecting rod (8) is hinged to the upper middle part of both sides of the door body (1). The slider (9) drives the connecting rod (8) to move. The connecting rod (8) pulls the door body (1) to flip upward and rise to the top plate inside the refuge chamber. The door body (1) is provided with several guide wheels (6) on both sides of the edge. The guide wheels (6) are engaged with the slide rail (5) respectively. The door body (1) slides up and down along the slide rail (5). The locking mechanism (4) includes a fixed rod, which is vertically installed at the center of the door body (1). A rotating rod is vertically installed on the fixed rod. An extension rod is connected to both ends of the rotating rod. The length of the rotating rod combined with the extension rod is greater than the width of the door body (1). A reset spring is connected to the two ends of the rotating rod opposite to the diagonal of the door body (1). A protrusion is provided at the end of the extension rod, and a groove is provided at the corresponding position of the door frame (3). A base plate is provided between the bottoms of the two uprights. Several anti-collision wheels (7) are provided on the side of the base plate near the refuge chamber. The anti-collision wheels (7) include right-angle grooves. Limiting springs are provided at both ends of the right-angle grooves. The limiting springs limit the right-angle opening of the right-angle groove to face the outside of the refuge chamber. The right-angle groove is connected to the base plate at a right angle. A buffer rubber wheel is fitted on the horizontal end of the right-angle groove. The buffer rubber wheel is set to abut against the bottom surface of the door (1). A pressing rubber wheel is provided on the vertical end of the right-angle groove. The circumferential surface of the pressing rubber wheel rotates relative to the door (1) and abuts against the side of the door (1). The outer surface of the door (1) is flat, and the inner surface of the door (1) is provided with reinforcing ribs and is arc-shaped.

Images