Magnetic adsorption anti-gravity self-opening and closing safety interlocking device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a magnetic adsorption anti-gravity self-opening and closing safety interlocking device which comprises a shielding chamber and a shielding lead door, one side of the shielding chamber and one side of the shielding lead door are hinged, the side away from the hinged side is a free end, the free end is provided with a door lock, and the opening side of the shielding chamber is provided with a shielding chamber frame front plate. The width of the shielding room frame front plate is larger than that of the shielding room, the width of the shielding lead door is larger than that of the shielding room, the door lock comprises a magnet, an elastic buffering piece, a fixing pin and a supporting frame, and the supporting frame is fixed to the back face of the shielding room frame front plate. And the condition that the shielding lead door can be automatically opened due to the gravity action when the equipment is not used is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, concretely is magnetic force adsorption prevents gravity from opening and closing safety interlocking device. BACKGROUND

[0002] The shielding room of the irradiator is a place where the irradiated product is irradiated, and the shielding room is wrapped with lead plates as a whole to isolate radiation. In order to place and take out the irradiated product, a shielding lead door is arranged on one side of the shielding room, and the shielding lead door is connected to the shielding room in the form of a hinge. As known, lead has a large density, and the shielding lead door usually has a large self-weight.

[0003] Due to the large weight of the shielding lead door of the irradiator, and the ground where the shielding lead door is installed cannot be completely horizontal, the shielding lead door may be opened automatically due to gravity when the device is not in use. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a magnetic force adsorption prevents gravity from opening and closing safety interlocking device, solves the problem that the shielding lead door is opened automatically due to gravity when the ground is not flat and there is no manual lock.

[0005] The utility model provides the following technical scheme: a magnetic force adsorption prevents gravity from opening and closing safety interlocking device, comprising a shielding room and a shielding lead door, the two are hinged on one side through a hinge, the side far from the hinge is a free end, the free end is provided with a door lock, the opening side of the shielding room is provided with a shielding room frame front plate, the width of the shielding room frame front plate is greater than that of the shielding room, the width of the shielding lead door is greater than that of the shielding room, the door lock comprises a magnet, an elastic buffer, a fixed pin and a support frame, and the support frame is fixed to the back of the shielding room frame front plate.

[0006] When the shielding lead door and the magnet are in contact, the elastic buffer ensures that the shielding lead door can be completely attached to the surface of the magnet, the magnet adsorbs the shielding lead door, the width of the shielding room frame front plate and the shielding lead door is greater than that of the shielding room, and the radiation is isolated when the device is used, so that the radiation leakage is prevented.

[0007] An opening is arranged on the shielding room frame front plate and used for placing the magnet.

[0008] When the shielding lead door and the magnet are in contact, the magnet can be slightly displaced along the opening, and the elastic buffer ensures that the shielding lead door can be completely attached to the surface of the magnet.

[0009] A hole is arranged on the support frame at a corresponding position and used for cooperating with the fixed pin, the shank of the fixed pin penetrates through the hole and is connected to the back of the magnet, and the magnet and the cap of the fixed pin are located on both sides of the support frame.

[0010] By adopting the above technical solution, the maximum displacement of the magnet toward the shielding lead door is guaranteed by fixing the pins, ensuring that when the irradiator is not in use, even if the ground is uneven, after the shielding lead door and the magnet are attracted, the position of the shielding lead door, that is, the shielding lead door and the shielding room are still in a closed state.

[0011] One end of the elastic buffer is connected to the inner wall of the support frame, and the other end is connected to the back side of the magnet.

[0012] By adopting the above technical solution, when the shielding lead door contacts the magnet, the elastic buffer ensures that the shielding lead door can completely fit the surface of the magnet.

[0013] The elastic buffer is sleeved on the outside of the nail rod of the fixing pin.

[0014] Two door locks are provided on the vertical height of the front plate of the shielding room frame.

[0015] By adopting the above technical solution, the upper and lower magnets can ensure that at least one magnet can be attracted to the shielding lead door.

[0016] The number of the elastic buffering members is more than one and they are evenly distributed around the fixing pin along the axis thereof.

[0017] The magnet also includes an electromagnet, which is energized when the shielding lead door is closed during operation to attract the shielding lead door.

[0018] When the irradiator is in normal use, the shielding lead door is sucked in by energizing the electromagnet. When the irradiator is not in use, the friction of the entire set of magnets at the upper and lower parts of the shielding lead door and the hinge itself ensures that the shielding lead door will not open due to gravity.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This utility model features a magnetic attraction, anti-gravity, self-opening and closing safety interlocking device. When the shielding lead door contacts the magnet, the elastic buffer ensures that the shielding lead door is completely in contact with the magnet surface. The magnet attracts the shielding lead door, ensuring that it does not open. Opening the irradiator door when not needed could cause safety accidents, such as an operator accidentally hitting the equipment door or dropping objects. This significantly improves workplace safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Fig. 1 This is a schematic top view of the structure of a magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to a specific embodiment 1 of the present invention;

[0022] Fig. 2 This is a side structural diagram of a magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to a specific embodiment 1 of the present utility model;

[0023] Fig. 3 Figure is the principle diagram of the magnetic adsorption anti-gravity self-opening and closing safety interlocking device of the embodiment 1 of the present application.

[0024] In the figure:

[0025] 1, shielding lead door; 2, hinge; 3, shielding room; 4, magnet; 5, elastic buffer; 6, fixed pin; 7, support frame; 8, shielding room frame front plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] The present application is aimed at the existing X-ray irradiation instrument shielding room 3, the installation ground part cannot be completely horizontal, and the equipment can be opened by the shielding lead door 1 due to gravity when not in use. The shielding room 3 is prior art, and the specific structure is not described again.

[0028] Embodiment 1: please refer to Figs. 1-3 , the magnetic adsorption anti-gravity self-opening and closing safety interlocking device, including the shielding room 3 and the shielding lead door 1, the side of the two is hinged through the hinge 2, the side away from the hinge is the free end, the free end is provided with the door lock, the opening side of the shielding room 3 is provided with the shielding room frame front plate 8, the width of the shielding room frame front plate 8 is greater than the shielding room 3, the width of the shielding lead door 1 is greater than the shielding room 3, the upper surface of the shielding lead door 1 can adopt the structure of half-enclosure, the convex edge is clamped on the upper surface of the shielding room frame front plate 8, and the radiation is fully ensured not to leak from the upper surface of the shielding lead door 1 and the shielding room frame front plate 8 when the equipment is used. The door lock includes the magnet 4, the elastic buffer 5, the fixed pin 6 and the support frame 7, the support frame 7 is fixed on the back of the shielding room frame front plate 8. When the shielding lead door 1 and the magnet 4 contact, the elastic buffer 5 ensures that the shielding lead door 1 can be completely attached to the surface of the magnet 4, the magnet 4 adsorbs the shielding lead door 1, and the shielding lead door 1 is ensured not to be opened.

[0029] The shielding room frame front plate 8 is provided with an opening for placing the magnet 4, the magnet 4 is exposed from the opening of the shielding room frame front plate 8, and is used for adsorption with the shielding lead door. The magnet 4 is connected with the fixed pin 6 at the back. When the shielding lead door 1 and the magnet 4 contact, the magnet 4 can be slightly displaced along the opening, and the elastic buffer 5 ensures that the shielding lead door 1 can be completely attached to the surface of the magnet 4.

[0030] The support frame 7 is provided with an opening at a corresponding position, which is used in cooperation with the fixing pin 6. The shank of the fixing pin 6 is connected to the back of the magnet 4 through the opening. The magnet 4 and the pin cap of the fixing pin 6 are located on both sides of the support frame 7. Through the fixing pin 6, the maximum displacement of the magnet 4 moving towards the shielding lead door 1 is ensured. When the irradiation device is not used, even if the ground is uneven, after the shielding lead door 1 and the magnet 4 are attracted, the position of the shielding lead door 1, i.e. the shielding lead door 1 and the shielding chamber 3, is still in a closed state.

[0031] One end of the elastic buffer 5 is connected to the inner wall of the support frame 7, and the other end is connected to the back of the magnet 4. When the shielding lead door 1 and the magnet 4 are in contact, the elastic buffer 5 ensures that the shielding lead door 1 can be completely attached to the surface of the magnet 4.

[0032] The elastic buffer 5 is sleeved outside the shank of the fixing pin 6.

[0033] The door lock is provided with two on the vertical height of the shielding chamber frame front plate 8. The upper and lower magnets 4 can ensure that at least one magnet 4 can be attracted to the shielding lead door 1.

[0034] The magnet 4 further comprises an electromagnet. When the shielding lead door 1 is closed, the electromagnet is powered on to attract the shielding lead door 1. The position of the electromagnet can be together with the magnet or in other places, which does not affect the effect. When the irradiation device is normally used, the shielding lead door 1 is attracted by the electromagnet being powered on. When the irradiation device is not used, the shielding lead door 1 is ensured not to be opened due to gravity by the friction of the upper and lower magnets 4 and the hinge 2 in the shielding lead door 1 in the utility model and the friction of the hinge 2 itself.

[0035] The height difference of the ground flatness generally does not exceed 12mm / m. When the device is normally used, the shielding lead door 1 is attracted by the electromagnet being powered on. When the device is not used, the shielding lead door 1 is ensured not to be opened due to gravity by the friction of the upper and lower magnets 4 and the hinge 2 in the shielding lead door 1 in the utility model and the friction of the hinge 2 itself. Fig. 2 The height difference of the ground flatness generally does not exceed 12mm / m. When the device is normally used, the shielding lead door 1 is attracted by the electromagnet being powered on. When the device is not used, the shielding lead door 1 is ensured not to be opened due to gravity by the friction of the upper and lower magnets 4 and the hinge 2 in the shielding lead door 1 in the utility model and the friction of the hinge 2 itself.

[0036] Suppose the weight of the shielding lead door 1 is 100kg, G=100Kg, and the height difference of the ground flatness is 12mm / m. The maximum inclination of the irradiation device is about 0.7 degrees, as shown in the figure. Fig. 3

[0037] F1=100Kg.N*sin0.7°=1.2Kg.N,

[0038] F2=100Kg.N*cos0.7°=99.9Kg.N,

[0039] ​The shielding lead door 1 is opened by a maximum force of 12N, so the maximum adsorption force of the magnet 4 is only 12N.

[0040] Specific implementation 2:

[0041] The difference between this specific embodiment and embodiment 1 is that the number of elastic buffers 5 is more than one, and is evenly distributed around the axis of the fixing pin 6.

[0042] The elastic buffer 5 is not sleeved outside the pin rod of the fixing pin 6, but is arranged symmetrically on both sides of the pin rod in parallel with the pin rod.

[0043] In the description of the utility model, it is necessary to explain that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance, in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0044] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetic adsorption anti-gravity self-opening and closing safety interlocking device, comprising a shielded room and a shielded lead door, one side of the two being hinged, and the side away from the hinge being a free end, the free end being provided with a door lock, characterized in that: A shielding room frame front plate is provided on the opening side of the shielding room, the width of the shielding room frame front plate is greater than that of the shielding room, the width of the shielding lead door is greater than that of the shielding room, and the door lock includes a magnet, an elastic buffer, a fixing pin and a support frame, and the support frame is fixed on the back of the shielding room frame front plate.

2. The magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to claim 1, characterized in that: An opening is provided on the front plate of the shielding room frame for placing the magnet.

3. The magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to claim 2, characterized in that: An opening is provided at a corresponding position on the support frame for cooperating with a fixing pin. The nail rod of the fixing pin passes through the opening and is connected to the back of the magnet. The magnet and the nail cap of the fixing pin are located on both sides of the support frame.

4. The magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to claim 1, characterized in that: One end of the elastic buffer is connected to the inner wall of the support frame, and the other end is connected to the back side of the magnet.

5. The magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to claim 4 is characterized in that: The elastic buffer is sleeved on the outside of the nail rod of the fixing pin.

6. The magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to claim 4, characterized in that: The door locks are provided in two at a vertical height on the front plate of the shielding room frame.

7. The magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to claim 6, characterized in that: The number of the elastic buffering members is more than one and they are evenly distributed around the fixing pin along the axis thereof.

8. The magnetic adsorption anti-gravity self-opening and closing safety interlocking device according to any one of claims 1 to 7, characterized in that: The magnet also includes an electromagnet, which is energized when the shielding lead door is closed during operation to attract the shielding lead door.

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