Rotary radiation-proof door

Abstract

The utility model discloses a rotary radiation-proof door, which comprises a door frame and a radiation-proof door hinged on the door frame, the radiation-proof door comprises a fixed door and a rotary door, one side of the fixed door is hinged on the door frame, the other side of the fixed door is hinged with the rotary door, and both the fixed door and the rotary door are formed by clamping a lead plate by a door plate. During rolling, the thickness gauge works, the rotating lead door is closed at the moment, and radiation during working of the thickness gauge is prevented. When equipment accidents and production accidents need to be handled, the thickness gauge stops working, the anti-radiation lead door is opened through manual rotation in time, handling of the equipment accidents and the production accidents is not affected at a little, and the thickness gauge is very convenient and practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to a radiation protection door. BACKGROUND

[0002] For various types of rolling mills, each rolling mill needs to accurately control the thickness of the rolled product, and a thickness gauge is configured. Since the thickness gauge emits radiation when working, in order to prevent radiation from affecting the on-site work, a fixed or sliding radiation protection lead door is installed on the operating side of the thickness gauge.

[0003] For example, the publication number is CN220336783U, the publication date is January 12, 2024, and the patent name is "a radiation protection door with multiple linkage sealing function", which discloses a radiation protection door, which comprises a combination, a door frame, a sliding part and a limiting part, the bottom end of the combination is provided with a limiting part, and the limiting part is provided with a door frame on one side, the top end of the door frame is provided with a sliding part, the door frame comprises a frame, a protruding block and a sealing air bag, and the middle part of the frame is provided with a protruding block, and the inside of the frame is provided with a sealing air bag. The radiation protection door with multiple linkage sealing function, the door plate is connected with the fixed seat, and is connected with the roller and the bearing, and is placed in the top plate at the same time, and is limited to move in the second limiting rail groove, the door plate is moved to open and close, then the inside of the door frame is provided with a slot and a sealing air bag, when the radiation protection door is closed by horizontal movement, the sealing air bag is extruded by the built-in sealing air bag, and the sealing air bag is deformed to fill the gap when the radiation protection door is closed, so as to ensure the sealing performance of the radiation protection door when it is closed.

[0004] The similar radiation protection door bucket has the problem of being thick and heavy. When equipment accidents and production accidents occur in the thickness gauge area of the rolling mill, after the thickness gauge is stopped, the fixed or sliding radiation protection lead door restricts or increases the difficulty of handling the accident, greatly increasing the time of handling the accident. Sometimes when disassembling the equipment in the thickness gauge area, the fixed or sliding radiation protection lead door needs to be disassembled, greatly increasing the maintenance difficulty. SUMMARY

[0005] The utility model solves the technical problem of realizing a movable and rotatable radiation protection lead door which can be easily closed and opened manually, and the radiation protection door structure is firm, safe and reliable.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme: a rotatable radiation protection door, comprising a door frame and a radiation protection door hinged to the door frame, the radiation protection door comprising a fixed door and a rotating door, one side of the fixed door being hinged to the door frame, the other side being hinged to the rotating door, the fixed door and the rotating door both being composed of a door plate clamping a lead plate.

[0007] The lead plate is wrapped by a clamping plate from the side with lead material, and the clamping plate is connected with the door plate to form a cavity for placing lead material.

[0008] The bottom surface of the fixed door and the rotating door is provided with a groove, and a roller is placed in the groove.

[0009] The inner side of the door frame is provided with a radiation-proof sealing flange protruding inward.

[0010] The hinge connecting the fixed door and the rotating door is on the outer side of the radiation-proof door, and each side of the radiation-proof door is provided with a radiation-proof sealing baffle fixed to the side of the fixed door extending to the rotating door.

[0011] The width of the rotating door accounts for 50-80% of the width of the radiation-proof door.

[0012] The hinge connecting the fixed door and the door frame, and the hinge connecting the rotating door and the fixed door are both composed of an annular bolt hole and a columnar bolt pin, and the bolt pin is inserted into the bolt hole with a gap fit.

[0013] The radiation-proof door is installed on the operating side of the thickness gauge of the rolling mill outlet.

[0014] The utility model facilitates the equipment accident and production accident treatment of the thickness gauge area, improves the convenience of manual door opening without affecting the protection function.

[0015] The thickness gauge works during rolling, and the rotating lead door is closed at this time to prevent radiation when the thickness gauge works. When equipment accidents and production accidents need to be handled, the thickness gauge stops working, and the rotating anti-radiation lead door is opened manually in time, which does not affect the handling of equipment accidents and production accidents at all, and is very convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0016] The content expressed in each drawing of the utility model specification and the marks in the drawing are briefly described as follows:

[0017] Figure 1 It is a structure diagram of the rotating anti-radiation door;

[0018] Figure 2 It is a structure diagram of the bolt hole of the hinge;

[0019] The marks in the above drawings are as follows: 1, rotating door; 2, fixed door; 3, door frame; 4, radiation-proof sealing flange; 5, radiation-proof sealing baffle; 6, hinge. DETAILED DESCRIPTION

[0020] The specific embodiments of the present application are described below with reference to the drawings, and the shape, structure, mutual position and connection relationship between the parts, the role and working principle of each part, the manufacturing process and the operation and use method of each component involved are further described in detail to help the skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present application.

[0021] The rotating anti-radiation door comprises a door frame 3 and an anti-radiation door hinged to the door frame 3, wherein the door frame 3 is fixed at the gauge operating side of the rolling mill exit, i.e. the anti-radiation door is installed at the gauge operating side of the rolling mill exit, and the rotating anti-radiation lead door is composed of a fixed door 2 on the right side and a rotating door 1 on the left side.

[0022] One side of the fixed door 2 is hinged to the door frame 3, and the other side is hinged to the rotating door 1. The fixed door 2 and the rotating door 1 are both composed of a door plate clamping lead plate. The width of the rotating door 1 accounts for 50-80% of the width of the anti-radiation door, as long as it can ensure that personnel can enter and exit. In this way, in the case of unnecessary full opening, only the rotating door 1 needs to be opened each time the rotating anti-radiation door is opened, which reduces the width (weight) of the door leaf to be opened, and the rotating door 1 can be opened more conveniently and quickly, and then the equipment accident and production accident can be handled.

[0023] In order to ensure the reliability of the rotating anti-radiation door, the door frame 3 is welded together with the rolling mill frame. Moreover, the hinges 6 connecting the fixed door 2 and the door frame 3, and the hinges 6 connecting the rotating door 1 and the fixed door 2 all do not use conventional hinge hinges 6, but use bolt hinges 6, as shown in Figure 2 The bolt hinges 6 are all composed of annular bolt holes and columnar bolt pins, one is fixed on the fixed side, and the other is fixed on the movable side. The bolt pins are inserted into the bolt holes in a vertical manner, and the bolt pins are inserted into the bolt holes with a gap fit to realize the rotation of the fixed door 2 relative to the door frame 3 and the rotation of the rotating door 1 relative to the fixed door 2.

[0024] At least three hinges 6 are provided between the fixed door 2 and the door frame 3, and at least three hinges 6 are provided between the rotating door 1 and the fixed door 2. Since the rotating lead door has built-in lead plates, the whole is relatively heavy, and therefore door bolts corresponding to the structural requirements are designed. In order to facilitate installation, the bolt hole and the mounting plate are integrally cast into shape, and the bolt pin is also integrally cast into shape with the mounting plate. In this way, the bolt hole and the bolt pin can be fixed to the desired position through the mounting plate. The mounting plate is provided with mounting holes, which can be fixed by bolt mounting plate. Four mounting holes are preferably provided on each mounting plate, respectively at the four corners of the mounting plate. The length of the mounting plate is 300 mm, the diameter is 150 mm, the diameter of the bolt hole is 55 mm, and the bolt hole or bolt pin is located on one side of the mounting plate.

[0025] The bottom surface of the fixed door 2 and the rotating door 1 is provided with a groove, and 2-4 rollers are arranged in the groove. The groove can be a plurality of independent recesses, that is, one roller is matched with one groove, or a strip-shaped groove is arranged along the bottom edge of the lead plate, and a plurality of rollers are arranged in the strip-shaped groove. The rollers contact the ground and are used to support the fixed door 2 or the rotating door 1. In this way, the burden of the hinge 6 can be reduced, and the staff can easily manually close and open the movable rotating lead door. The structure of the lead plate is that the lead material is wrapped by the clamping plates around the lead plate. The upper, lower, left and right sides of the lead plate are wrapped by the lead material, and the front and back of the lead material are the door plate. In this way, the clamping plate and the door plate are connected to form a hollow cavity for placing the lead material.

[0026] The following lists the feasible embodiments of the fixed door 2 and the rotating door 1:

[0027] The fixed door 2 is provided with an outer door plate and an inner door plate. Each door plate has a width of 500 mm, a height of 2300 mm, and a thickness of 10 mm. The middle layer is composed of a clamping plate and lead material (stacked lead material). The clamping plate is a square frame with a total width of 500 mm, a height of 2300 mm, and a thickness of 10 mm. The middle is hollow. The left and right sides have a width of 47 mm, and the lower and upper sides have a width of 30 mm. The lead material placed in the middle has a width of 406 mm, a height of 2206 mm, and a thickness of 10 mm.

[0028] The rotating door 1 is connected to the fixed door 2 by three door bolts. The rotating door 1 is also composed of three layers of doors, including an outer door plate and an inner door plate. The door plate has a width of 1500 mm, a height of 2300 mm, and a thickness of 10 mm. The middle layer is composed of a clamping plate and lead material (stacked lead material). The clamping plate is a square frame with a total width of 1500 mm, a height of 2300 mm, and a thickness of 10 mm. The middle is hollow. The left and right sides have a width of 47 mm, and the lower and upper sides have a width of 30 mm. The lead material placed in the middle has a width of 1406 mm, a height of 2206 mm, and a thickness of 10 mm.

[0029] Because the rotating anti-radiation door is relatively thick, a large gap is provided between the rotating door 1 and the door frame 3 to ensure that the rotating anti-radiation door can be buckled on the door frame 3. At the same time, the bottom of the rotating anti-radiation door also has a gap due to the support of the rollers. To prevent radiation leakage, an inwardly protruding anti-radiation sealing flange 4 is arranged on the inner side of the door frame 3. The rotating anti-radiation door is opened outwardly of the anti-radiation sealing flange 4. After closing the door, the edge of the rotating anti-radiation door contacts the anti-radiation sealing flange 4. The hinge 6 connecting the fixed door 2 and the rotating door 1 is on the outer side of the anti-radiation door. Each side of the anti-radiation door is provided with an anti-radiation sealing baffle 5 extending from the fixed door 2 to the rotating door 1. The anti-radiation sealing baffle 5 is a strip-shaped structure used to block the gap between the rotating door 1 and the fixed door 2. The anti-radiation sealing flange 4 and the anti-radiation sealing baffle 5 are both profiled materials wrapped with lead material inside, and the thickness of each is greater than 20 mm. Such a double-layer anti-radiation structure can effectively prevent the leakage of radiation from between the two doors.

[0030] When rolling, the thickness gauge works, and the rotating lead door is closed to prevent radiation when the thickness gauge works. When the device accident and the production accident need to be handled, the thickness gauge stops working, and the rotating anti-radiation lead door is manually rotated and opened in time, which does not affect the handling of the device accident and the production accident at all, and is very convenient and practical. When a larger space needs to be opened for operation, the fixed door 2 (including the rotating door 1) can be opened by multiple people or with the aid of tools according to needs, and the use convenience of the rotating anti-radiation door is improved.

[0031] The application is described above in combination with the drawings, and it is obvious that the specific implementation of the application is not limited by the above method. Any non-essential improvement or direct application of the concept and technical solution of the application to other occasions is within the protection scope of the application.

Claims

1. A revolving radiation shielding door, comprising a door frame and a radiation shielding door hinged to the door frame, characterized in that: The radiation shielding door includes a fixed door and a revolving door. One side of the fixed door is hinged to the door frame, and the other side is hinged to the revolving door. Both the fixed door and the revolving door are constructed by clamping lead plates between door panels.

2. The rotating radiation shielding door according to claim 1, characterized in that: The lead plate is made of a clamp that wraps lead material from the side, and the clamp is connected to the door panel to form a hollow cavity for placing the lead material.

3. The rotating radiation shielding door according to claim 1, characterized in that: Both the fixed door and the revolving door have grooves on their bottom surfaces, and rollers are placed in the grooves, with the rollers in contact with the ground.

4. The rotating radiation shielding door according to claim 1, 2 or 3, characterized in that: The inner side of the door frame is provided with an inwardly protruding anti-radiation sealing flange.

5. The rotating radiation shielding door according to claim 4, characterized in that: The hinges connecting the fixed door and the revolving door are on the outside of the radiation-proof door, and each side of the radiation-proof door is provided with a radiation-proof sealing baffle that is fixed to the fixed door and extends towards the revolving door.

6. The rotating radiation shielding door according to claim 5, characterized in that: The width of the revolving door is 50-80% of the width of the radiation shielding door.

7. The rotating radiation shielding door according to claim 6, characterized in that: The hinges connecting the fixed door to the door frame and the hinges connecting the revolving door to the fixed door are both composed of annular bolt holes and columnar bolts, with the bolts inserted into the bolt holes and fitted with clearance.

8. The rotating radiation shielding door according to claim 1 or 7, characterized in that: The radiation-proof door is installed on the operating side of the thickness gauge at the mill exit.

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