CN215349038U

CN215349038U - Opening and closing structure and shielding device

Info

Publication number: CN215349038U
Application number: CN202022960208.1U
Authority: CN
Inventors: 李大梁; 陈方正; 吴中华; 聂子恒; 王俊峰
Original assignee: Our United Corp
Current assignee: Our United Corp
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-12-31
Anticipated expiration: 2030-11-16
Also published as: CN214532434U; CN214659789U; CN214659790U; CN214532527U; CN214048880U

Abstract

The embodiment of the application provides a structure and shield assembly open and shut, and the structure that opens and shuts that provides includes: the device comprises a rotary door and a first detection switch for sensing the position of the rotary door. Through setting up first detection switch, the position that can real-time detection revolving door, that is the degree of opening and shutting of real-time detection revolving door promptly. Through the accurate judgement to the revolving door degree of opening and shutting, after the revolving door is closed completely, open the radiation system again, when the revolving door was opened, close the radiation system, can be better shield the ray.

Description

Opening and closing structure and shielding device

Technical Field

The application relates to the technical field of medical treatment, especially, relate to a structure and shield assembly open and shut.

Background

With the development of medical technology, radiation has become an important means in medical diagnosis and treatment, and radiation is emitted from a radiation source, and the radiation can penetrate through a human body from different angles to diagnose and treat a patient. Since the radiation diagnosis or treatment equipment has radioactivity, the radiation may hurt the operator or other personnel when performing the diagnosis or treatment, so how to shield the radiation of the radiation equipment becomes an urgent technical problem to be solved.

At present, the radiation system is usually placed in a shielding room specially constructed for the hospital or placed in a shielding device for shielding the rays of the radiation system. How to enable the shielding device to better shield rays becomes a technical problem which needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In view of the above, one of the technical problems to be solved by the embodiments of the present application is to provide a switching structure and a shielding device, so as to overcome at least some of the problems in the prior art.

The embodiment of the application provides a structure that opens and shuts, the structure that opens and shuts includes: the device comprises a rotary door and a first detection switch for sensing the position of the rotary door.

In one embodiment, the rotating door rotates around a rotating mechanism, the rotating mechanism is connected with a switch collision block, and when the rotating door is opened to the maximum position state, the switch collision block triggers the first detection switch.

In one embodiment, the opening and closing structure further includes: a second detection switch sensing a position of the rotary door.

In one embodiment, the swing door rotates around a rotating mechanism, the rotating mechanism is connected with a switch collision block, and when the swing door is in a door closing state, the switch collision block triggers the second detection switch.

In one embodiment, the opening and closing structure further includes: a third detection switch sensing the position of the rotary door.

In one embodiment, the rotating door rotates around a rotating mechanism, the third detection switch is positioned on the closing surface of the closing structure in the closing state, and when the rotating door is in the completely closing state, the third detection switch is triggered.

In one embodiment, the opening and closing structure is further provided with an electromagnet, the electromagnet is located on a closing surface of the opening and closing structure in a closing state, the electromagnet is connected with the second detection switch, and if the second detection switch is triggered, the electromagnet is electrified to provide suction force for closing the rotating door.

In one embodiment, the opening and closing structure is further provided with an electromagnet, the electromagnet is located on a closing surface of the opening and closing structure in a closing state, the electromagnet is connected with the third detection switch, and if the third detection switch is triggered, the electromagnet is electrified to provide suction force for closing the rotating door.

In one embodiment, the required suction force of the electromagnet is determined according to the weight of the rotating door.

The embodiment of the present application further provides a shielding apparatus, which is applied to a radiation system, the radiation system is disposed inside the shielding apparatus, and the shielding apparatus includes: the shielding cabin is provided with a containing cavity, the containing cavity contains the radiation system, and the shielding cabin shields rays generated by the radiation system; the opening and closing structure is arranged on the first surface of the shielding cabin and connected with the shielding cabin, and the opening and closing structure is any one of the opening and closing structures.

In the embodiment of the present application, the opening and closing structure provided includes: the device comprises a rotary door and a first detection switch for sensing the position of the rotary door. Through setting up first detection switch, the position that can real-time detection revolving door, that is the degree of opening and shutting of real-time detection revolving door promptly. Through the accurate judgement to the revolving door degree of opening and shutting, after the revolving door is closed completely, open the radiation system again, when the revolving door was opened, close the radiation system, can be better shield the ray. The shielding device in the embodiment can effectively shield ray radiation, ensures safety, and avoids injury to operators or other personnel caused by rays when diagnosis and treatment are carried out.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 shows a schematic structural view of a first shielding compartment of a shielding device in an embodiment of the present application;

fig. 2 shows a schematic structural view of a second shielding compartment of the shielding device in the embodiment of the present application;

fig. 3 shows a schematic structural view of a base of the shielding device in the embodiment of the present application;

FIG. 4 illustrates a front view of a hinge structure of a shielding device in an embodiment of the present application;

FIG. 5 illustrates a side view of a hinge structure of a shielding device in an embodiment of the present application;

FIG. 6 shows a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is an enlarged partial schematic view of the location B in FIG. 6;

fig. 8 shows a schematic first surface view of a first shielding compartment of a shielding device in an embodiment of the application;

fig. 9 shows a schematic second surface view of a first shielding compartment of the shielding device in an embodiment of the application;

fig. 10 shows a third schematic surface view of a first shielding cage of a shielding device in an embodiment of the application;

fig. 11 shows a fourth schematic surface view of a first shielding cage of a shielding device in an embodiment of the application;

FIG. 12 shows a schematic top view of a first shielding cage of the shielding device in an embodiment of the present application;

FIG. 13 shows a cross-sectional view in the direction F-F of FIG. 12;

fig. 14 is a structural view showing a first drive mechanism of the shield device in the embodiment of the present application;

fig. 15 shows a position diagram of a third detection switch of the shielding device in the embodiment of the present application;

FIG. 16 shows a front view of the left screen door of the shielding device in an embodiment of the present application;

FIG. 17 shows a cross-sectional view taken along line C-C of FIG. 16;

FIG. 18 illustrates a rear view of the left shield door of the shield apparatus in an embodiment of the present application;

FIG. 19 shows a schematic view of an embodiment of the present application with a power drive component;

fig. 20 is a structural view showing a scroll wheel assembly of the shielding apparatus in the embodiment of the present application;

FIG. 21 shows a cross-sectional view taken along line D-D of FIG. 20;

FIG. 22 illustrates a block diagram of a bearing set of a shielding device in an embodiment of the present application;

FIG. 23 shows a cross-sectional view taken along line E-E of FIG. 22;

fig. 24 is a schematic structural view showing a third shield compartment of the shield device in the embodiment of the present application;

fig. 25 shows a schematic structural diagram of an electrical cabinet of the shielding apparatus in the embodiment of the present application;

fig. 26 shows a schematic structural view of a fourth shielding compartment of the shielding device in the embodiment of the present application.

Reference numerals:

1. a shield case; 2. a rotating door; 31. a first lower base; 32. a second lower base; 33. a third lower base; 41. a left shield door; 42. a right shield door; 43. a hand wheel; 431. a hand-operated mechanism; 441. a gear; 442. a rack; 443. a transmission rod; 451. a first sprocket; 452. a second sprocket; 453. a chain; 46. a chain tensioning assembly; 47. a bearing set; 471. a pin roll screw; 472. a fifth bearing; 481. a limiting column; 482. a limiting block; 491. A guide rail; 49. a roller assembly; 492. a roller; 493. a roller shaft; 494. a fourth bearing; 495. a gland; 51. a first hinge plate; 52. a second hinge plate; 511. a first fixed part; 521. a second fixed part; 531. a first rotating shaft; 512. a first movable portion; 522. a second movable portion; 532. a second rotating shaft; 533. a switch collision block; 541. A first bearing; 542. a second bearing; 543. a third bearing; 61. a first drive motor; 62. a transmission gear; 63. an electromagnetic clutch; 71. a first detection switch; 72. a second detection switch; 73. a third detection switch; 74. a fourth detection switch; 75. an electromagnet; 81. a first tread structure; 82. a second tread structure; 911. a second drive motor; 912. a synchronous belt; 913. a pulley; 914. fixing the sliding block; 92. a connecting rod; 93. reinforcing ribs; 101. a first cover plate; 102. a second cover plate; 103. a third cover plate; 104. an electrical cabinet; 105. an air inlet; 106. an air outlet; 107. an air inlet pipeline; 100. a radiation device; 200. a therapeutic bed body.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application shall fall within the scope of the protection of the embodiments in the present application.

Referring to fig. 1-26, the present application provides a shielding apparatus for a radiation system, the radiation system being disposed inside the shielding apparatus, the shielding apparatus including: the radiation system comprises a base, a shielding cabin and a first opening and closing structure, wherein the radiation system is fixed on the base; the shielding cabin is arranged on the base, a containing cavity is formed by the shielding cabin and the ground where the base is located, the containing cavity contains the radiation system, the shielding cabin shields rays generated by the radiation system, and the shielding cabin is formed by splicing a plurality of shielding shells 1; the first opening and closing structure is arranged on the first surface of the shielding cabin and connected with the shielding cabin.

In this application embodiment, shielding device's shielding cabin sets up on the base, and the shielding cabin forms with base place ground and holds the chamber, and radiation system arranges in and holds the intracavity, and the shielding cabin shields the produced ray of radiation system, and the shielding cabin comprises a plurality of shielding shell 1 concatenations. A first opening and closing structure connected with the shielding cabin is arranged on the first surface of the shielding cabin. The shielding device in the embodiment can effectively shield ray radiation, ensures safety, and avoids injury to operators or other personnel caused by rays when diagnosis and treatment are carried out. In addition, the base of the embodiment of the application enables the shielding device to be mounted more conveniently.

In the present embodiment, the material composition of the shield case 1 is not limited, and cast iron, tungsten, lead, or an alloy thereof may be used.

In the embodiment of the application, the surface where the first opening and closing structure is located is used as the first surface of the shielding cabin. In particular, it can be understood with reference to fig. 8. Radiation systems are commonly used in medical diagnosis and treatment, such as accelerators, gamma knife therapy systems, CT diagnostic systems, and the like. To avoid physical injury to the operator or other personnel from the radiated radiation, the radiation system is typically placed in a dedicated room, which limits its application.

The shielding device in the embodiment of the application can reduce the requirements of radiation systems such as a gamma knife treatment system and the like on a machine room, is suitable for different installation environments, and can meet the requirements of treatment in various emergency situations (such as wars, epidemic situations and the like) anywhere.

Optionally, the radiation system in the embodiment of the present application includes a radiation apparatus 100 and a treatment couch 200; the shielding cabin includes: a first shield part and a second shield part; the first shielding part is a shielding cabin far away from the radiation equipment 100; the second shielding part is a shielding cabin close to the area of the radiation equipment 100; the volume formed by the first shielding part is smaller than the volume formed by the second shielding part.

In the embodiment of the application, the shielding cabin is divided into the first shielding part and the second shielding part, the accommodating space for accommodating the radiation equipment 100 and the treatment couch body 200 is formed by the combination of the first shielding part and the second shielding part, the volume formed by the first shielding part far away from the radiation equipment area is smaller than the volume formed by the second shielding part close to the radiation equipment area, and the inner space of the whole shielding cabin can be well utilized.

In one embodiment, the distance between the top surface of the first shielding portion and the plane of the base gradually decreases in a direction away from the radiation apparatus 100. The shielding device reduces the volume as much as possible under the condition of meeting the use requirement, thereby reducing the occupation of the external space. In an alternative embodiment, the shielded compartment in this embodiment is configured as a railway locomotive, as shown in FIG. 2.

In the embodiment of the present application, it can be understood that the first shielding part and the second shielding part may be integrally formed; first shielding portion can be formed by the concatenation of a plurality of shielding shell 1, and second shielding portion can be formed by the concatenation of a plurality of shielding shell 1, and first shielding portion and second shielding portion splice again, form whole shielding cabin. The first shielding part and the second shielding part are only divided formally and are used for expressing the volume relation formed by the front area and the rear area of the shielding cabin.

The specific shapes of the shielding cabin, the first shielding part and the second shielding part are not limited in the embodiment of the application.

As an alternative embodiment, the shielding compartment in the embodiment of the present application is square, wherein the distance between the top surface of the first shielding part and the plane of the base is the same as the distance between the top surface of the second shielding part and the plane of the base. I.e. the volume formed by the first shield part is equal to the volume formed by the second shield part. The shielding device in this embodiment fully satisfies the high comfort and convenience in shielding the cabin.

Optionally, in this embodiment of the application, a plurality of shielding shells 1 of the shielding compartment may be overlapped by using an overlapping mechanism, and then further fastened, where the fastened connection may be a screw connection, a screw may be a socket head cap screw, and the fastened connection may also be riveting, welding, and the like. The shield case 1 and the base may be fixed by a screw or a rivet, and may be fixed by a socket cap screw in a screwing process. It should be understood that the above fastening methods are exemplary embodiments, and any method that can accomplish the fastening should be considered to be within the scope of the embodiments of the present application.

The embodiment of the present application does not limit the specific form of overlapping between the plurality of shield shells 1 using the overlapping mechanism. In an alternative embodiment, a plurality of the shielding shells 1 are spliced by a stepped overlapping mechanism. Therefore, the shielding shells 1 are well sealed by splicing by using the stepped lapping mechanism, and the radiation of the radiation equipment is effectively prevented from leaking from the gap between the two lapped shielding shells 1.

In this application embodiment, also can use the structure except that echelonment overlap joint structure to splice between shielding shell 1, for example can also be inclined plane form overlap joint structure, sawtooth inclined plane form overlap joint structure, this embodiment does not do the injecture, only need between shielding shell 1 can the adaptation. In addition, the lapping surface of the step-shaped lapping mechanism can be a plane, and can also be wave-shaped, arc-shaped or zigzag. The embodiment of the application is not limited, and only the shielding shells 1 can be matched.

The thickness of the shielding shell 1 is not limited in the embodiments of the present application, and may be set according to actual use requirements, and as a preferred embodiment, the thickness of the shielding shell 1 may be greater than or equal to 120 mm.

In one embodiment, the base includes a plurality of lower bases. According to the structure of the radiation system, the base is divided into a plurality of lower bases, and when the radiation system is installed, the lower bases are respectively placed at corresponding positions and then spliced. A plurality of lower bases are not restricted by conveyer and place when transporting, and it is more convenient to install.

In one embodiment, the base comprises: a first lower base 31 corresponding to the radiation apparatus 100, a second lower base 32 corresponding to the couch top 200, and a third lower base 33 corresponding to an axially extending region of the couch top 200.

In this embodiment, the base is a main body of the shielding device for carrying the radiation system, and the radiation apparatus 100, the treatment couch 200 and the shielding chamber are integrally fixed on the base. The base comprises a first lower base 31, a second lower base 32 and a third lower base 33, so that all parts of the radiation system are borne by the base, the stability of the radiation system in the shielding device in use is ensured, and the radiation equipment can be leveled by the base.

In one embodiment, referring to fig. 3, an alternative base is provided, wherein the first lower base 31, the second lower base 32, and the third lower base 33 comprise a grid structure on which the parts of the radiation system are fixed, so that the radiation apparatus 100 and the treatment couch 200 can be stably installed in the shielding device. In the embodiment of the present invention, the grid-shaped structures of the first lower base 31, the second lower base 32, and the third lower base 33 may be rectangular grids, but may also be other shapes, such as triangles, parallelograms, and the like, and the embodiment of the present invention is not limited thereto.

In one embodiment, in order to ensure the stability of the first lower base 31 after the radiation device 100 is fixed, in the embodiment of the present application, a host support structure having a width greater than that of the support rods forming the mesh structure is provided at a position where the first lower base 31 is docked with the radiation device 100. Specifically, the first lower base 31 may be set according to the actual situation of the radiation apparatus 100; for example, the shape of the host support structure matches the shape of the bottom surface of the radiation device 100. In order to ensure the stability of the second lower base 32 after the treatment couch 200 is fixed, in the embodiment of the present application, at the position of the second lower base 32 abutting against the treatment couch 200, a bed lower supporting structure having a width larger than that of the supporting rods forming the mesh structure is provided. Specifically, the shape of the second lower base 32 matches the shape of the bottom surface of the therapeutic bed 200, and can be adjusted according to the actual length, weight, size, etc. of the therapeutic bed 200.

The connection manner among the first lower base 31, the second lower base 32 and the third lower base 33 is not limited in the embodiments of the present application, and for example, the base portions are fixed by screws, but other fixing methods such as welding, riveting and the like are also possible, and when the base portions are fixed by screws, as a possible implementation manner, the first lower base 31, the second lower base 32 and the third lower base 33 may be integrally connected by hexagon socket cap head screws.

In one embodiment, the first opening and closing mechanism is a rotary opening and closing mechanism. In this embodiment, first structure of opening and shutting sets up the first surface in shielding cabin and is connected with the shielding cabin, and first structure of opening and shutting is for rotating the structure of opening and shutting, has guaranteed the precision of the relative shielding cabin motion of first structure of opening and shutting well. The first opening and closing structure in the embodiment of the application can comprise a hinge, a stepping motor and the like as a rotating opening and closing structure, and the embodiment of the application is not limited. In the embodiment of the present application, for example, the first opening and closing structure includes: the shielding cabin comprises a rotating door 2 and at least one hinge structure, wherein the rotating door 2 is connected with the shielding cabin through the hinge structure. In this embodiment, the hinge structure in the first opening and closing structure can be driven by the rotating door 2 and rotate relative to the shielding compartment. The rotating door 2 can close or open the shielding chamber during the rotation process, so that the shielding chamber has an opening which can be closed or opened, and people can enter the shielding chamber for treatment, maintenance of the radiation system or leave the shielding chamber conveniently. In an alternative embodiment, a closed structure is arranged between the rotating door 2 and the shielding compartment, and the closed structure is in a mutually matched step shape, and the step-shaped closed structure can prevent rays from leaking from a gap between the rotating door 2 and the shielding compartment.

In one embodiment, the hinge structure includes: a first hinge plate 51, a second hinge plate 52, and a rotating mechanism; the first hinge plate 51 is arranged on the shielding cabin; the second hinge plate 52 is arranged on the rotating door 2; the rotating mechanism connects the first hinge plate 51 and the second hinge plate 52 to rotate the second hinge plate 52 around the rotating mechanism. It can be understood that the first hinge plate 51 and the second hinge plate 52 are sleeved on the rotating mechanism, and both the first hinge plate 51 and the second hinge plate 52 can rotate around the rotating mechanism.

It should be understood that the specific structure of the hinge structure is not limited in this embodiment, and any specific structure that can complete the rotation of the revolving door should be considered as the protection scope in the embodiment of the present application. Referring to fig. 4-7, in one embodiment, the first hinge plate 51 includes a first fixed portion 511 and a first movable portion 512; the second hinge plate 52 includes a second fixed part 521 and a second movable part 522; the first fixing portion 511 is fixed on the shielding compartment; the second fixing portion 521 is fixed on the rotating door 2; the first movable portion 512 and the second movable portion 522 are connected to the rotating mechanism to rotate the second hinge plate 52 about the rotating mechanism.

In this embodiment, the first fixing portion 511 and the second fixing portion 521 may be rectangular or semicircular. The first fixing portion 511 may be fixed to the shielding compartment, and the second fixing portion 521 may be fixed to the swing door 2 by screws, welding, or the like, and it should be understood that any manner that can fix the first fixing portion 511 to the shielding compartment may be used as an alternative embodiment in the embodiments of the present application.

Since the second fixed portion 521 of the second hinge plate 52 is fixed on the rotating door 2 and can rotate around the rotating mechanism, the shielding compartment can be closed or opened during the rotation of the rotating door 2, so that an opening which can be closed or opened exists in the shielding compartment, and personnel can enter the shielding compartment for treatment, maintenance of the radiation system or leave the shielding compartment.

In one embodiment, the rotation mechanism comprises: a first rotating member and a second rotating member; the first rotating part is connected with the upper ends of the first movable part and the second movable part; the second rotating part is connected with the lower ends of the first movable part and the second movable part. Wherein the first rotating member includes: the first shaft 531 and the first bearing 541, wherein the first bearing 541 is sleeved on the first shaft 531; the first bearing 541 is used for bearing radial force to limit the overturning of the second hinge plate 52. The second rotating member includes: the second rotating shaft 532, the second bearing 542 and the third bearing 543, wherein the second bearing 542 and the third bearing 543 are sleeved on the second rotating shaft 532; the second bearing 542 is used for bearing radial force to limit the overturning of the second hinge plate 52; the third bearing 543 is used for bearing axial force and bearing the gravity of the rotating door 2. More specifically, the first bearing 541 and the second bearing 542 are both double-row angular contact ball bearings, and the third bearing 543 is a thrust ball bearing. The double-row angular contact ball bearing can bear radial force to limit the second hinge plate 52 from overturning; the thrust ball bearing can bear axial force to bear the gravity of the rotating door 2.

In one embodiment, the first bearing 541 is a first double-row angular contact ball bearing, the second bearing 542 is a second double-row angular contact ball bearing, and the third bearing 543 is a thrust ball bearing. The rotating mechanism comprises: a first rotating member and a second rotating member; the first rotating part is connected with the upper ends of the first movable part and the second movable part; the second rotating part is connected with the lower ends of the first movable part and the second movable part; the first rotating member includes: the first rotating shaft 531 and the first double-row angular contact ball bearing are sleeved on the first rotating shaft 531; the second rotating member includes: the second rotating shaft 532, the second double-row angular contact ball bearing and the thrust ball bearing are sleeved on the second rotating shaft 532; the first double-row angular contact ball bearing and the second double-row angular contact ball bearing are used for bearing radial force to limit the second hinge plate 52 from overturning; the thrust ball bearing is used for bearing axial force and bearing the gravity of the rotating door 2.

In this embodiment, the first rotating member is connected to the upper ends of the first and second

movable portions

512 and 522, and the first rotating member may be disposed at a hollow portion of the upper ends of the first and second

movable portions

512 and 522 such that the first and second

movable portions

512 and 522 rotate with respect to the first rotating member. The second rotating member is connected to lower ends of the first and second

movable portions

512 and 522, and may be disposed at a hollow portion of the lower ends of the first and second

movable portions

512 and 522, so that the first and second

movable portions

512 and 522 rotate with respect to the second rotating member. So that the second hinge plate 52 can rotate around the rotating mechanism under the condition that the first hinge plate 51 is fixed on the shielding compartment.

Therefore, the rotating mechanism of the hinge structure in the embodiment of the application is provided with the two-row angular contact ball bearings at the upper end and the lower end respectively to bear radial force, so that the overturning of the rotating mechanism is effectively limited; in addition, a thrust ball bearing is arranged at the lower end of the hinge structure to bear axial force, and the gravity of the rotating door 2 is effectively borne. The stability of the swing door 2 when it is rotated is greatly enhanced.

In order to better enable the first opening and closing structure to drive the rotating door 2 to rotate, in one embodiment, the first opening and closing structure further includes: and the first driving mechanism is positioned at the lower part of the rotating door 2 and drives the rotating door 2 to rotate so as to open or close the first opening and closing structure.

The specific structure of the first driving mechanism is not limited in the embodiment of the present application, and the first driving mechanism may be a driving motor structure, or may be another mechanical structure. In yet an alternative embodiment of the present application, referring to fig. 14, the first driving mechanism includes: the first driving motor 61 is connected with the transmission gear 62, and the transmission gear 62 is connected with the second rotating part; the first driving motor 61 drives the transmission gear 62 to rotate the second rotating member. Specifically, the first driving motor 61 drives the transmission gear 62 to rotate, the transmission gear 62 drives the second rotating member to rotate, the second rotating member drives the second hinge plate 52 to rotate, and finally the rotating door 2 rotates to open or close the first opening and closing structure. The second rotating shaft 532 of the second rotating member is fixedly connected to the second movable portion of the second hinge plate 52, and when the transmission gear 62 drives the second rotating shaft 532 to rotate, the second rotating shaft 532 drives the second hinge plate 52 to rotate, so as to open or close the rotating door 2.

In one embodiment, the first drive mechanism further comprises: an electromagnetic clutch 63, the electromagnetic clutch 63 connecting the transmission gear 62 and the second rotating member; the driving force of the first driving motor 61 drives the second rotating member through the transmission gear 62 and the electromagnetic clutch 63 to drive the rotating door 2 to rotate, so as to open or close the first opening and closing structure. Therefore, through the first driving structure, the rotating door 2 can be electrically opened or closed, the process of manually opening or closing the rotating door 2 is simplified, and the use is convenient.

In the embodiment of the present application, the opening speed of the rotating door 2 is not limited, and in an alternative embodiment, when the rotating door 2 is driven to open by the first driving mechanism, the opening speed may be set according to actual situations. It should be understood that any suitable similar situation, which may be set or adjusted by practical requirements, should be considered within the scope of the embodiments of the present application.

In the embodiment of the present application, the type and the type of the first driving motor 61 are not limited, and in an alternative embodiment, the first driving motor may be an ac speed reduction motor, and the driving stability is excellent.

In the embodiment of the present application, the type and the type of the transmission gear 62 are not limited, and in an alternative embodiment, the transmission gear may be a pair of spur gears, further alternatively, the reduction ratio is 1:4, the transmission performance is excellent, and the transmission precision is high.

In the embodiment of the application, in order to prevent emergency situations such as power failure and motor failure when the shielding device is used, the electromagnetic clutch 63 can be automatically released, and a user can manually open the rotating door 2, so that the safety is fully guaranteed.

In one embodiment, the first drive mechanism is located in a pedestal or pit at the bottom of the swing door 2. The first driving structure is arranged on the base at the bottom of the rotating door 2 or in a pit, so that the structural stability of the first driving structure during driving is improved. In this embodiment, the pit is a pit formed on the floor of the radiation system, and is provided for installing the radiation system. Of course, since the shielding apparatus in this embodiment can be installed in various environments, the pit should be determined depending on the installation environment of the shielding apparatus.

In one embodiment, in order to ensure that the movement state of the swing door 2 can be accurately monitored, the first opening and closing structure includes: a swing door 2, and a first detection switch 71 that senses the position of the swing door 2. The embodiment of the present application does not limit the type and the setting position of the first detection switch 71, and the first detection switch 71 may be an angle sensor for sensing the rotation position of the swing door by detecting the rotation angle of the swing door 2, and the first detection switch 71 may also be a displacement sensor for sensing the rotation position of the swing door 2 by detecting the displacement generated when the swing door 2 rotates. Specifically, the first detection switch 71 is used to sense that the swing door 2 is opened to the maximum position, and thus the first detection switch 71 can accurately determine the movement state of the opening process of the swing door 2. In this embodiment, as shown in fig. 14, the swing door 2 is rotated around a swing mechanism, the swing mechanism is connected to a switch striking block 533, and when the swing door 2 is opened to the maximum position state, the switch striking block 533 triggers the first detection switch 71. Specifically, the first detection switch 71 is located at a lower portion of the second rotating shaft 532 of the rotating mechanism, and a switch striking block 533 is provided on the second rotating shaft 532, and the switch striking block 533 contacts the first detection switch 71 when the rotating door 2 is opened to the maximum position state. In this embodiment, when the first detection switch 71 contacts the switch collision block 533 on the second rotating shaft 532, it is indicated that the corresponding state is the maximum opening state of the rotating door 2, and then the information of the maximum opening state obtained by the first detection switch 71 can be fed back to a mechanism (e.g., an electrical cabinet) capable of controlling the opening and closing of the rotating door 2 in time, so as to send an instruction to stop the rotation of the first driving motor 61 in time, and then stop driving the rotating door 2 to rotate continuously, thereby preventing the damage caused by the locked rotation of the first driving motor 61 due to the fact that the rotating door 2 is not stopped in time when reaching the maximum position state.

In one embodiment, in order to ensure that the movement state of the swing door 2 can be accurately monitored, the first opening and closing structure includes: a swing door 2, and a second detection switch 72 sensing the position of the swing door 2. Specifically, the second detection switch 72 can sense the closing position of the swing door 2, and since the second detection switch 72 can sense the closing of the swing door 2, the second detection switch 72 can accurately determine the movement state of the closing process of the swing door 2.

In this embodiment, the swing door 2 rotates around the swing mechanism, the swing mechanism is connected to the switch striking block 533, and when the swing door 2 is closed, the switch striking block 533 triggers the second detection switch 72. Specifically, the second detection switch 72 is located at a lower portion of the second rotating shaft 532 of the rotating mechanism, and a switch striking block 533 is provided on the second rotating shaft 532, and when the rotating door 2 is in the closed position, the switch striking block 533 contacts the second detection switch 72. In this embodiment, when the second detection switch 72 contacts the switch collision block 533 on the second rotating shaft 532, it indicates that the corresponding state is the closing state of the rotating door 2, and then the second detection switch 72 obtains the door closing state information and can feed back the door closing state information to a mechanism (e.g., an electrical cabinet) capable of controlling the opening and closing of the rotating door 2 in time, so as to send an instruction to stop the rotation of the first driving motor 61 in time, and then stop driving the rotating door 2 to rotate continuously, thereby preventing the damage caused by the locked rotation of the first driving motor 61 due to the fact that the rotating door 2 is not stopped in time when reaching the door closing state.

In one embodiment, in order to ensure that the movement state of the swing door 2 can be accurately monitored, the first opening and closing structure includes: a swing door 2, and a third detection switch 73 that senses the position of the swing door 2. Specifically, the third detection switch 73 can sense the fully closed position of the swing door 2, and since the third detection switch 73 can sense the state when the swing door 2 is fully closed, the third detection switch 73 can accurately determine the closed state of the swing door 2.

In this embodiment, referring to fig. 15, the swing door 2 rotates around the swing mechanism, and the third detection switch 73 is located on the closing surface in the closed state of the first opening and closing structure; the third detection switch 73 can also be located on the closing face of the shielding compartment in the closed state of the first opening and closing structure; when the rotating door 2 is in a completely closed state, the third detection switch is triggered. In particular, the third detection switch 73 may be arranged on the closing surface of the revolving door 2, or on the closing surface of the shielding compartment, when the first opening and closing structure is in the closed state. In this application embodiment, revolving door 2 can seal the shielding compartment when closing completely, sets up third detection switch 73 on the closing surface in shielding compartment, can more conveniently accurately sense the closed state of revolving door 2.

In one of the embodiments, the specific types of the first detection switch 71, the second detection switch 72, and the third detection switch 73 are not limited, and the first detection switch 71, the second detection switch 72, and the third detection switch 73 are all mechanical switches by way of example.

In one embodiment, in order to ensure that the rotating door 2 can close the shielding compartment in the closed state and prevent the rotating door 2 from being opened accidentally during use, as shown in fig. 15, the shielding device is further provided with an electromagnet 75, the electromagnet 75 is located on the closing surface of the first opening and closing structure in the closed state, the electromagnet 75 is connected with the second detection switch 72, and if the second detection switch 72 is triggered, the electromagnet 75 is energized to provide a suction force for closing the rotating door 2. Specifically, the electromagnet 75 is made of cast iron, and the electromagnet 75 may be disposed on the closing surface of the swing door 2 in the closed state of the first opening and closing structure, or may be disposed on the closing surface of the shielding compartment in the closed state of the first opening and closing structure.

In one embodiment, in order to ensure that the rotating door 2 can seal the shielding compartment in the closed state and prevent the rotating door 2 from being opened accidentally during use, the shielding device is further provided with an electromagnet 75, the electromagnet 75 is located on the closed surface of the first opening and closing structure in the closed state, the electromagnet 75 is connected with the third detection switch 73, and if the third detection switch 73 is triggered, the electromagnet 75 is electrified to provide suction for closing the rotating door 2. Specifically, the electromagnet 75 is made of cast iron, and the electromagnet 75 may be disposed on the closing surface of the swing door 2 in the closed state of the first opening and closing structure, or may be disposed on the closing surface of the shielding compartment in the closed state of the first opening and closing structure.

In one embodiment, the electromagnet 75 may be simultaneously connected to the second detection switch 72 and the third detection switch 73; when any one of the second detection switch 72 and the third detection switch 73 is activated, the electromagnet is energized to provide a suction force for closing the swing door 2.

In one embodiment, the required suction force of electromagnet 75 is not limited, but alternatively, the required suction force of electromagnet 75 may be determined according to the weight of swing door 2. Therefore, the electromagnet 75 in the embodiment of the present application can meet the use requirement when the rotating door 2 has different weights.

In one embodiment, the side of the rotating door 2 which is rotatably connected is provided with a shielding assembly which shields rays between the side of the rotating door 2 which is rotatably connected and the shielding cabin in a state that the rotating door 2 is opened. The side of the rotary door 2 connected with the shielding cabin through the hinge structure is the side of rotary connection.

In one embodiment, the shield assembly includes a plurality of shield plates; a plurality of shield plates are provided at a predetermined interval at one side to which the swing door 2 is rotatably coupled. Specifically, four shielding plates may be included, which are disposed at equal intervals on one side of the rotating connection, and shield a gap between one side of the rotating door 2 where the hinge structure is fixed and the shielding compartment when the rotating door 2 is opened, and shield rays leaking from the gap. In this embodiment, the number of the shielding plates and the size of the preset interval are not limited, and are specifically set according to actual use. The shielding assembly includes a plate-like structure.

In one embodiment, the shield assembly is disposed on the side of the swing door 2 where it is pivotally attached, extending along the top to the bottom of the swing door. Specifically, a whole edge of the rotating door 2 on the side of the rotating connection is provided with a shielding component, and when the rotating door 2 is opened, the shielding component can shield rays leaked from the whole gap. The shielding assembly includes a plate-like structure.

In one embodiment, the shield assembly is disposed at an upper portion of a side of the swing door 2 to which it is rotatably coupled. Specifically, the area of the upper portion 1/4 on the side to which the swing door 2 is pivotally attached is provided with a shielding assembly. In this embodiment, the installation area of the shielding assembly is not limited, and only the shielding assembly is installed on the upper portion of the rotating door 2. The shielding assembly includes a plate-like structure.

In one embodiment, the opening and closing direction of the rotating door 2 is towards the outer side of the shielding cabin; the shielding component is arranged on the inner side of one side of the rotating door 2 in rotating connection; the shielding component is arranged on the plane of the rotating door 2 and extends towards the periphery of one side of the rotating door 2 in rotating connection. Specifically, when the rotating door 2 is opened toward the outside of the shielded room, the shielding assembly is disposed on the plane of the rotating door 2 toward the inside of the shielded room, and the shielding assembly extends toward the outside of the side to which the rotating door 2 is rotatably connected.

In one embodiment, the opening and closing direction of the rotating door 2 is towards the inner side of the shielding compartment; the shielding component is arranged on the outer side of one side of the rotating door 2 in rotating connection; the shielding component is arranged on the plane of the rotating door 2 and extends towards the periphery of one side of the rotating door 2 in rotating connection. Specifically, when the rotating door 2 is opened toward the inside of the shielded room, the shielding assembly is disposed on the plane of the rotating door 2 toward the outside of the shielded room, and the shielding assembly extends toward the outside of the side to which the rotating door 2 is rotatably connected.

The specific structure of the shielding assembly is not limited in the embodiment of the present application, and it may be a baffle-like structure protruding from an upper edge of one side of the fixed hinge structure of the rotating door 2, and when the rotating door 2 is opened, the baffle structure blocks the radiation emitted by the radiation device 100 in the shielding device to the gap, but other structures are also possible. Because the shielding subassembly in this embodiment can shield when revolving door 2 is opened the state, revolving door 2 fixes the ray between one side of hinge structure and the shielding cabin, has consequently further prevented the hourglass of ray and has penetrated, has guaranteed that shielding device does not receive the ray radiation outward, guarantees safety.

In one embodiment, referring to fig. 26, the shielding assembly comprises a first tread structure 81 and a second tread structure 82, the first tread structure 81 is located at one side of the rotating door 2 where the rotating door is rotatably connected, the contact part of the shielding compartment and the first tread structure 81 is provided with the second tread structure 82, and the first tread structure 81 and the second tread structure 82 cooperate to shield rays.

In this embodiment, the shielding compartment is provided with a first step surface structure 81, the rotating door 2 is provided with a second step surface structure 82, and the first step surface structure 81 is matched with the second step surface structure 82. Specifically, the first tread structure 81 on the rotating door 2 may be multiple, multiple first tread structures 81 are arranged at intervals, and multiple second tread structures 82 are also arranged at positions on the shielding compartment corresponding to the first tread structures 81. Alternatively, a first step structure 81 is arranged on the upper edge of one side of the hinge fixing structure of the revolving door 2, and a second step structure 82 is arranged at the corresponding position of the shielding cabin. The first tread structure 81 faces the inside of the shielding compartment and the second tread structure 82 faces the outside of the shielding compartment. When the rotating door 2 is opened, the radiation emitted between the side of the rotating door 2 to which the rotating door is rotatably connected and the shielding compartment is shielded by the first tread structure 81, thereby preventing radiation leakage. Therefore, the first step surface structure 81 and the second step surface structure 82 are matched with each other to shield rays, radiation leakage is prevented, the shielding device is prevented from being irradiated by rays, and safety is guaranteed.

In the embodiment of the present application, the fixed relationship between the first tread structure 81 and the rotating door 2 is not limited, and the fixed relationship between the second tread structure 82 and the shielding compartment is not limited, so it can be understood that the first tread structure 81 and the rotating door 2 are integrally formed or fixedly connected, and/or the second tread structure 82 and the shielding compartment are integrally formed or fixedly connected.

In the embodiment of the present application, the manner of fixedly connecting the first tread structure 81 and the rotating door 2 is not limited, and as an example, the first tread structure 81 may be welded to the rotating door 2, or may be fixed by using a fastener such as a screw, or may be fixed by clamping the first tread structure 81 and the rotating door 2. In the embodiment of the present application, the manner of fixedly connecting the second tread structure 82 and the rotating door 2 is not limited, and as an example, the second tread structure 82 may be welded to the rotating door 2, or may be fixed by using a fastener such as a screw, or the second tread structure 82 may be fixed to the rotating door 2 in a clamping manner.

In the embodiment of the present application, the hinge structure may be a plurality of hinges, for example, two hinges, and the first step surface structure 81 is located above the hinge far from the ground.

In one embodiment, the first opening and closing structure can be opened and closed by using another driving mode. The first opening and closing structure includes: the second driving mechanism drives the rotating door 2 to rotate so as to open or close the first opening and closing structure. The top angle of the side that opens and shuts of revolving door 2 in this application embodiment refers to the one corner of top and shielding storehouse separation when revolving door 2 opens, and the bottom angle of the side that opens and shuts of revolving door 2 refers to the one corner of below and shielding storehouse separation when revolving door 2 opens. Therefore, the second driving mechanism arranged at the upper top corner or the lower bottom corner of the opening and closing side of the rotating door 2 drives the rotating door 2 to rotate, so that the shielding compartment can be closed or opened in the rotating process of the rotating door 2, and the shielding compartment has an opening which can be closed or opened, so that personnel can enter the shielding compartment to treat, maintain a radiation system or leave the shielding compartment.

In this embodiment, the second driving mechanism is optionally provided in a pedestal or pit at the bottom of the swing door 2. The second driving structure is arranged on the base at the bottom of the rotating door 2 or in a pit, so that the structural stability of the second driving structure during driving is improved. Of course, since the shielding apparatus in this embodiment can be installed in various environments, the pit should be determined depending on the installation environment of the shielding apparatus.

The embodiment of the present application does not limit the specific structure of the second driving mechanism, and in an alternative implementation, the second driving mechanism includes: a drive unit and a link 92; the driving unit is independently fixed relative to the rotating door 2, one end of the connecting rod 92 is connected with the driving unit, and the other end of the connecting rod 92 is connected with the opening and closing side of the rotating door 2. In particular, the driving unit can be fixedly connected with the radiation equipment, the base or the shielding cabin. The drive unit may be a belt drive or a chain drive. In this embodiment, a driving unit is provided on the radiation apparatus 100 to drive the link 92 connected thereto to move, so that the link 92 drives the swing door 2 to open or close. The embodiment of the present application does not limit the specific manner in which the driving unit is disposed, and may be fixed using a threaded fastener, as an example.

The embodiment of the present application does not limit the specific structure of the driving unit in the second driving mechanism, and in an alternative implementation, as shown in fig. 26, the driving unit includes: second driving motor 911, hold-in range 912, two pulleys 913 and fixed slider 914, the both ends cover of hold-in range 912 is established on two pulleys, fixed slider 914 is fixed with hold-in range 912, fixed slider 914 is connected to the first end of connecting rod 92, the second end and the rotation door 2 side of opening and shutting of connecting rod 92 are connected, second driving motor 911 drives hold-in range 912 and drives fixed slider 914 and connecting rod 92 motion, connecting rod 92 drives and rotates door 2 and open or close.

In the embodiment of the present application, the two pulleys 913 may be correspondingly disposed on the radiation apparatus 100, or on the base, or on the shielding compartment. The timing belt 912 is wound around two pulleys 913, and the fixed slider 914 is fixed to the timing belt 912. The second end of the link 92 is connected to the swing door 2, and the first end is connected to the fixed slider 914. When the second driving motor 911 rotates, the timing belt 912, the fixed slider 914 and the link 92 are moved together, thereby opening and closing the swing door 2. Specifically, a protrusion is provided on the pulley 913, a groove or a hole is provided on the timing belt 912, and when the timing belt 912 moves, the protrusion on the pulley 913 engages with the groove or the hole on the timing belt 912. Further, the rotating door 2 in this embodiment may be made of a shielding material (e.g., tungsten, lead, or alloy thereof), so the rotating door 2 is relatively heavy, and in order to save more effort in driving, the second end of the connecting rod 92 is connected to the upper top corner or the lower bottom corner of the opening and closing side of the rotating door 2, and the force bearing point is outermost, and the moment is large, and the effort is saved most.

In one embodiment, the driving unit includes: second driving motor 911, chain, two gears and fixed slider 914, the both ends cover of chain is established on two gears, fixed slider 914 is fixed with the chain, fixed slider is connected to the first end of connecting rod 92, the second end and the swing door 2 side of opening and shutting of connecting rod 92 are connected, second driving motor 911 drive chain drives fixed slider 914 and connecting rod 92 motion, connecting rod 92 drives swing door 2 and opens or close.

In the embodiment of the present application, the two gears may be correspondingly disposed on the radiation apparatus 100, on the base, or on the shielding compartment. The chain is wound around the two gears, and the fixed slider 914 is fixed to the chain. The second end of the link 92 is connected to the swing door 2, and the first end is connected to the fixed slider 914. When the second driving motor 911 rotates, the chain, the fixed slider 914 and the link 92 are moved together, thereby opening and closing the swing door 2. Further, the rotating door 2 in this embodiment may be made of a shielding material (e.g., tungsten, lead, or alloy thereof), so the rotating door 2 is relatively heavy, and in order to save more effort in driving, the second end of the connecting rod 92 is connected to the upper top corner or the lower bottom corner of the opening and closing side of the rotating door 2, and the force bearing point is outermost, and the moment is large, and the effort is saved most.

This application embodiment can set up drive unit at revolving door 2 top, also can set up drive unit in revolving door 2's bottom, hides in pit or base.

In one embodiment, the second drive mechanism further comprises: the reinforcing rib 93, both ends of the reinforcing rib 93 are fixed with two pulleys 913 respectively. The existence of the reinforcing rib 93 can ensure the stability of the motion of the synchronous belt 912, and further ensure the stability of the driving process of the second driving mechanism.

In one embodiment, the shielding apparatus further comprises: and the second opening and closing mechanism is arranged on the second surface of the shielding cabin and is used for opening or closing the shielding cabin. The shielding cabin can be opened or closed by the second opening and closing mechanism, and the operations of equipment source guiding, quick source closing in an emergency state, internal component maintenance and the like can be more conveniently carried out through the second opening and closing mechanism. Wherein, the guiding source is to install the radioactive source into the focusing head of the radiation device 100 by a mechanical device, and the closing source is to rotate the tungsten roller with the radioactive source to the shielding position by an automatic or manual mode. In this embodiment, the radioactive source can be set according to an actual radiation system, and this application is not limited thereto.

In the embodiment of the application, when the first surface is taken as the main view plane, the second surface of the shielding cabin is taken as the right view plane. In particular, it can be understood with reference to fig. 9.

In one embodiment, the second opening and closing mechanism includes: the shielding door is fixed on the shielding cabin by the guiding motion part and the power driving part; the power driving part provides power for the shielding door to move along the guide motion part so as to realize the opening and closing of the shielding door.

In the embodiment, the shielding door is driven by the power driving part to move left and right along the guide movement assembly, so that the shielding door is opened and closed, and the equipment is convenient to conduct source guide, quick source closing in an emergency state and maintenance of internal assemblies. In addition, the shielding door is fixed on the shielding cabin by using the guide motion part and the power driving part, so that the shielding cabin forms a complete whole when the shielding door is closed, and the structural integrity of the shielding device is ensured.

In the embodiment of the present application, one or two second opening and closing mechanisms may be provided. When the second mechanism that opens and shuts is one, be equivalent to setting up a shield door, the size of this shield door and the shielding cabin on be close to the mouth phase-match, through controlling a push-and-pull shield door, realize opening and shutting. When the second mechanism that opens and shuts is two, be equivalent to setting up two shielding doors, with two shielding door push-and-pull to the centre to realize opening and shutting. The following embodiments are described with two second opening and closing mechanisms provided, and the structures of the left and right second opening and closing mechanisms are the same, so the second opening and closing mechanisms are described as a whole and are not described separately.

In an alternative embodiment, as shown in fig. 18 and 19, the power drive component comprises: rack 442 and gear 441, rack 442 is fixedly installed on the shield compartment, gear 441 is installed on the shield door, and gear 441 is engaged with rack 442, so that gear 441 drives the shield door to move along rack 442.

In this embodiment, the rack 442 is disposed on the shielding compartment directly above the shielding door, and the shielding door can move along the rack 442 by using the gear 441 engaged with the shielding door, so that the shielding door can be opened and closed.

In order to make things convenient for the manual work to open or close the shield door in this application embodiment, optionally, gear 441 is provided with hand mechanism 431 towards the outside in shield compartment, and it is rotatory to drive gear 441 through rotating hand mechanism 431, and then drives the shield door and remove and open or close on the direction moving part, and is easy and simple to handle, has fully taken care of user's experience. In particular, it can be understood with reference to fig. 19.

In one embodiment, the power drive component comprises: a rack 442, a gear 441, a first sprocket 451, a second sprocket 452, a chain 453, and a hand wheel 43; the rack 442 is fixedly arranged on the shielding cabin right above the shielding door, the gear 441 is arranged on the inner side of the shielding door, and the gear 441 is meshed with the rack 442; the first sprocket 451 is disposed at a position corresponding to the gear 441 outside the shield door, and the first sprocket 451 is connected to the gear 441 through a transmission rod 443; the first sprocket 451 is connected with the second sprocket 452 by a chain 453; the hand wheel 43 is connected to the second chain wheel 452, and the gear 441 is rotated by rotating the hand wheel 43.

Referring to fig. 16 to 18, the two second opening and closing mechanisms are provided, which corresponds to two shield doors, and the two shield doors are pushed and pulled toward the middle to realize opening and closing. As shown in the drawings, the structure of the left shield door 41 in an alternative embodiment is described below with respect to the power driving part on the left shield door 41 for the convenience of describing the embodiment. In this embodiment, the first sprocket 451 is connected to the gear 441 located on the inner side of the left shield door 41 through the transmission rod 443, so that the first sprocket 451 can rotate to drive the gear 441 to rotate synchronously. The gear 441 is engaged with a rack 442 on the shield compartment fixedly installed right above the left shield door 41 (see the structure of the rack 442 in another alternative embodiment shown in fig. 19), and when the gear 441 rotates synchronously with the first sprocket 451, the gear 441 can move along the rack 442. The second chain wheel 452 is connected to the handwheel 43, and the second chain wheel 452 is connected to the first chain wheel 451 through the chain 453, so that when the handwheel 43 is rotated by a user, the chain 453 and the first chain wheel 451 are driven by the second chain wheel 452 to rotate, and finally the gear 441 moves on the rack 442, so that the left screen door 41 can move along the rack 442 along with the gear 441. Specifically, the diameter of the first sprocket 451 is larger than the diameter of the second sprocket 452; the second sprocket 452 is disposed directly below the first sprocket 451. The user can rotate the hand wheel 43 clockwise or anticlockwise to accomplish the left-right movement of the left shield door 41, and then can accomplish the opening or closing of the left shield door 41, which is simple and convenient.

The control of the opening or closing of the right screen door 42 by the first sprocket 451, the second sprocket 452, the chain 453, the gear 441 and the rack 442 in this embodiment is similar to the opening or closing of the left screen door 41, and will not be described again.

Optionally, the power drive component further comprises a chain tensioning assembly 46; the chain tensioner assembly 46 abuts the chain 453 for adjusting the tightness of the chain 453.

At least two chain tensioning assemblies 46 are provided in this embodiment and are respectively fixed to the left and

right screen doors

41 and 42. The chain tensioning assembly 46 in the embodiment of the present application includes one adjusting gear, two adjusting screws, and a fixed portion on which the adjusting gear is mounted. The adjusting gear abuts against the chain 453, and by adjusting the two adjusting screws, the pressure of the adjusting gear abutting against the chain 453 can be adjusted, and the tightness of the chain 453 can be adjusted. By means of the chain tensioning assembly 46 in the embodiment of the present application, the speed at which the left and right screen doors are opened can be adjusted.

In the embodiment of the present application, the specific structure of the guiding movement assembly is not limited, and in an alternative embodiment, as shown in fig. 9 and 19, the guiding movement component includes: guide rail 491 and roller assembly 49, roller assembly 49 installs at the lower limb of shield door, and guide rail 491 installs in the shield cabin and the corresponding position department of roller assembly 49, and roller assembly 49 moves along guide rail 491 and makes the shield door remove about in order to realize opening and shutting of shield door.

The roller assembly 49 of the guide movement part is arranged on the lower edge of the shielding door, so that the shielding door can move left and right on the guide rail 491 along with the roller assembly 49, the guide rail 491 and the roller assembly 49 play a role in guiding, the movement of the shielding door is ensured not to deviate from a preset track, and the opening and closing precision and the moving reliability of the shielding door are ensured.

The specific structure of the roller assembly 49 is not limited in the embodiments of the present application, and in an alternative embodiment, referring to fig. 20 to 21, optionally, the roller assembly 49 includes: the roller 492, the roller shaft 493, two fourth bearings 494 and two pressing covers 495, the two fourth bearings 494 are sleeved on the roller shaft 493 at intervals along the axial direction of the roller shaft 493, the roller 492 is sleeved outside the two fourth bearings 494, the two pressing covers 495 are fixed at two ends of the roller 492 in a one-to-one correspondence manner, and the outer ring of the fourth bearing 494 is stopped by the adjacent pressing cover 495. Wherein, the fourth bearing 494 is a deep groove ball bearing. Therefore, the roller assemblies 49 in the embodiment of the application are compact in structure, are mounted on the lower edges of the left and right shielding doors to move along the guide rails 491, can effectively bear the weight of the shielding doors, and are good in structural stability.

In one embodiment, the guided motion component further comprises: bearing group 47, bearing group 47 installs at the last border of shield door, and the shield door passes through bearing group 47 motion and realizes opening and shutting of second mechanism that opens and shuts.

In the embodiment of the present application, the specific structure of the bearing set 47 is not limited, and in an alternative embodiment, as shown in fig. 22 and 23, the bearing set 47 includes: the shielding door locking mechanism comprises a pin shaft screw 471 and two fifth bearings 472, wherein the two fifth bearings 472 are sleeved on the pin shaft screw 471, the pin shaft screw 471 comprises a threaded section, and the pin shaft screw 471 is connected with the shielding door through the threaded section. And the fifth bearing is a deep groove ball bearing.

Bearing group 47 in this embodiment sets up at the last border of shield door, has played the guide effect, has further guaranteed that the shield door moves about can not deviate predetermined orbit to the precision of opening and closing and the reliability when removing of shield door have been guaranteed.

In one embodiment, the second opening and closing mechanism further comprises: a limiting device; the limiting device comprises a limiting block 482 and a limiting column 481; shield and be provided with two stopper 482 of predetermineeing the spaced on the shielding cabin along corresponding on the door, shield and be provided with spacing post 481 along corresponding position on the door, through spacing post 481 and with two stopper 482 cooperations, the mobile position of restriction shield door. Specifically, the example will be described with two second opening and closing mechanisms, which is equivalent to two shield doors, and the two shield doors are pushed and pulled toward the middle to realize opening and closing. Two limiting blocks 482 at preset intervals are arranged on the shielding cabin corresponding to the upper edge of the left shielding door 41 in the shielding doors, a limiting column 481 is arranged at the corresponding position of the upper edge of the left shielding door 41, and the moving position of the left shielding door 41 is limited by the limiting column 481 and the limiting blocks 482; two limiting blocks 482 at preset intervals are arranged on the shielding cabin corresponding to the upper edge of the right shielding door 42 in the shielding door, a limiting column 481 is arranged at the corresponding position of the upper edge of the right shielding door 42, and the moving position of the right shielding door 42 is limited by the limiting column 481 and the limiting block 482.

Through setting up stop device in this application embodiment, it is spacing to left shield door 41 and right shield door 42 respectively to restricted the shift position and the scope of shield door, guaranteed that the shield door can not be because of the too big roll-off guide rail 491 of migration distance, and then avoid the damage of shield door.

In one embodiment, the second opening and closing mechanism further includes a fourth detection switch 74: the fourth detection switch 74 is arranged above the limit column when the shielding door is in a closed state; the fourth detection switch 74 detects whether the shield door is closed. Specifically, the example will be described with two second opening and closing mechanisms, which is equivalent to two shield doors, and the two shield doors are pushed and pulled toward the middle to realize opening and closing. The left shielding door 41 and the right shielding door 42 are respectively provided with a fourth detection switch 74, and the two fourth detection switches 74 are respectively arranged right above the limiting column 481 when the left shielding door 41 and the right shielding door 42 are in a closed state; the at least one fourth detection switch 74 detects whether the left shield door 41 is closed, and the at least one fourth detection switch 74 detects whether the right shield door 42 is closed.

The present embodiment accurately determines whether the left and

right shield doors

41 and 42 are closed by setting the fourth detection switch 74 to ensure that the radiation does not leak between the left and

right shield doors

41 and 42 when the shielding apparatus is in use. Further preventing the safety problem caused by the radiation leakage.

In an optional implementation manner, the fourth detection switch 74 determines whether the left shielding door 41 and the right shielding door 42 are closed by detecting whether the limiting posts 481 on the left shielding door 41 and the right shielding door 42 are in contact with the limiting posts 481.

In the embodiment of the application, the gas exchange of the inner space of the shielding device is fully considered. Thus, as shown in fig. 24, in an alternative embodiment, the shielded compartment is provided with an air inlet 105 and an air outlet 106; the air inlet 105 is arranged at one end of the top of the shielding cabin close to the radiation equipment 100; the air outlet 106 is disposed at one end of the shielding cabin bottom far from the therapeutic bed 200.

In the embodiment of the application, when the first surface is taken as the main view, the third surface of the shielding cabin is taken as the rear view. In particular, it can be understood with reference to fig. 10.

In the embodiment of the present application, the air inlet 105 is disposed at one end of the shielding chamber top close to the radiation device 100, the air outlet 106 is disposed at one end of the shielding chamber bottom far from the radiation device 100, and the positions of the air inlet and the air outlet are respectively located at opposite angles of the shielding chamber, so that the air in the shielding chamber can be better exhausted, and the fresh air can be conveniently input into the shielding chamber, so that the task of gas exchange can be efficiently completed. Of course, the air inlet 105 and the air outlet 106 may be disposed at other positions of the shielding compartment, and it should be understood that any position of the air inlet 105 and the air outlet 106 that can satisfy the air exchange requirement of the internal space of the shielding device should be considered as being within the scope of the present application.

In this embodiment, the size, style and shape of the air inlet 105 and the air outlet 106 are not limited, and as an example, the air inlet 105 is circular, and the diameter may be greater than or equal to 160mm, or 8 air inlets 105 with a diameter of 60 mm; the air outlet 106 is circular, and the diameter may be greater than or equal to 160mm, or may be rectangular, and the size of the rectangle may be 260mm × 60 mm. It should be understood that the air inlet 105 and the air outlet 106, which can satisfy the air exchange requirement of the inner space of the shielding device, should be considered as falling within the protection scope of the present application.

In a specific embodiment of the present application, the volume inside the shielding device is about 54 cubic meters, and the ventilation is performed 4-6 times per hour for the requirement of the internal environment, and the exhaust air volume is 324 cubic meters per hour calculated by 6 times per hour ventilation. The inside should be kept at a positive pressure, and the ventilation opening is calculated by 1.5 times the amount of discharged air, i.e., 486 cubic meters per hour, so that the diameter of the air inlet 105 is not less than 160mm in this case.

The air inlet 105 and the air outlet 106 in this embodiment efficiently complete air exchange, and bring a good environment to the shielding device in this embodiment and a good use experience to the user.

In one embodiment, the shielded cabin further comprises an air intake duct 107; one end of the air inlet duct 107 is connected to the air inlet, and the air inlet duct extends from the top surface to the third surface of the shielding compartment on the outer surface of the shielding compartment. Through the air inlet duct 107 in this embodiment, the gas exchange inside the shielding device can be better and more efficiently completed, so that a better environment can be brought to the inside of the shielding device.

In the embodiment of the present application, the shape and size of the air inlet duct 107 are not limited, and the cross section may be circular, rectangular or other shapes as an example, and the size only needs to be set as required. In an optional embodiment, the cross section of the air inlet duct 107 is rectangular, so that the volume of the air inlet duct 107 is compressed as much as possible on the basis of ensuring efficient gas exchange, the cost is reduced, and the compactness and the aesthetic degree of the shielding device of the embodiment of the present application are improved.

In an alternative embodiment, the air inlet duct 107 is removable from the shielding device.

In an alternative embodiment, the air inlet duct 107 may include a removable air inlet duct cover, which may be used to close the air inlet duct 107 in the event that ventilation is not required or in other special circumstances.

In one embodiment, the shielding cabin is provided with at least one maintenance window, and a detachable cover plate covers the maintenance window; and the electronic field image device, the motor or the bulb tube are maintained through the maintenance window.

In this embodiment, the shielding chamber may be provided with a maintenance window, and the electronic portal imaging device, the motor or the bulb is rotated to the maintenance window by rotating the frame of the radiation apparatus 100, and the electronic portal imaging device, the motor or the bulb is maintained through the maintenance window. Three maintenance windows, a first maintenance window, a second maintenance window and a third maintenance window, may also be provided. The first maintenance window is used for maintaining the electronic portal image device; the second maintenance window is used for maintaining the motor; the third maintenance window is used for maintaining the bulb tube.

As shown in fig. 12 and 24, the shielding compartment has a first maintenance window disposed on the top surface of the shielding compartment; a first detachable cover plate 101 covers the first maintenance window; and maintaining the electronic field image device through the first maintenance window.

Therefore, in the embodiment of the application, the electronic field image device can be maintained through the first maintenance window arranged on the top surface of the shielding cabin, so that the electronic field image device does not need to be transported out of the shielding device when the equipment is maintained, and the time cost and the labor cost of a user are saved.

The shape of the first maintenance window is not limited in the present application, and may be, for example, a rectangle or a circle.

Further, when the first cover plate 101 is separated from the first maintenance window, the first cover plate may be separated from the top surface of the shielding cabin, or may be connected to the top surface of the shielding cabin through a fixed connection component.

As shown in fig. 8, the shielding compartment has a second maintenance window, and the second maintenance window is arranged on the first surface of the shielding compartment; a second detachable cover plate 102 covers the second maintenance window; and the motor is maintained through the second maintenance window.

The embodiment of the present application does not limit the specific structure of the second cover plate 102 covering the second maintenance window, in an alternative embodiment, the second cover plate 102 may be connected to the shielding compartment by using a hinge, when the hinge is opened, the second cover plate 102 is separated from the second maintenance window, at this time, the motor may be maintained, and when the hinge is closed, the second cover plate 102 covers the second maintenance window. In an alternative embodiment, the hinge mainly comprises a hinge fixing part, a hinge rotating part, a connecting shaft and two double-row angular contact ball bearings.

Therefore, in the embodiment of the application, the motor can be maintained through the second maintenance window arranged on the first surface of the shielding cabin, so that the motor does not need to be transported out of the shielding device when being maintained, and the time cost and the labor cost of a user are saved.

The shape of the second maintenance window is not limited in the present application, and may be, for example, a rectangle or a circle.

As shown in fig. 24 and 25, the shielding compartment has a third maintenance window, and the third maintenance window is disposed on the third surface of the shielding compartment; a third detachable cover plate 103 covers the third maintenance window; and maintaining the bulb tube through the third maintenance window.

The embodiment of the present application does not limit the specific structure of the third cover plate 103 covering the third maintenance window, in an alternative embodiment, the third cover plate 103 may be connected to the shielding compartment by a hinge, when the hinge is opened, the third cover plate 103 is separated from the third maintenance window, at this time, the bulb may be maintained, and when the hinge is closed, the third cover plate 103 covers the third maintenance window. In an alternative embodiment, the hinge mainly comprises a hinge fixing part, a hinge rotating part, a connecting shaft and two double-row angular contact ball bearings.

Therefore, in the embodiment of the application, the bulb tube can be maintained through the third maintenance window arranged on the first surface of the shielding cabin, so that the bulb tube does not need to be transported out of the shielding device when being maintained, and the time cost and the labor cost of a user are saved.

The shape of the third trimming window is not limited in the present application, and may be, for example, a rectangle or a circle.

Optionally, as shown in fig. 25, a fourth surface of the shielded enclosure is provided with an electrical cabinet 104. In this embodiment, the electrical cabinet 104 is disposed on the fourth surface of the shielding compartment, so that the space in the shielding compartment is saved, and it is convenient for maintenance personnel to directly maintain outside the shielding device when finding an electrical fault, and some parts in this embodiment can also be powered.

In the embodiment of the present application, when the first surface is taken as the main view plane, the fourth surface of the shielding cabin is taken as the left view plane. In particular, it can be understood with reference to fig. 11 and 25.

In the embodiment of the application, various accessories can be arranged in the ground shielding device, so that better use experience can be realized during use.

In one embodiment, the shielding device further comprises a laser lamp inside. The laser lamp can be used for the positioning of the radiation system and is fixed in the shielding cabin, and the power supply of the laser lamp is provided by the shielding device.

In one embodiment, the shielding device further comprises a monitoring facility inside. A plurality of monitoring facilities are arranged in the shielding device and used for constantly displaying the state in the shielding device so as to ensure the safety of equipment and personnel.

In one embodiment, the shielding device further comprises an intercom system inside. An intercom system is arranged in the shielding device and is used for communicating with the patient.

In one embodiment, the shielding device further comprises an emergency stop switch inside. The shielding device is provided with an emergency stop switch at an easy-to-operate position for emergency stop of the radiation system.

In one embodiment, the shielding device also comprises a radiation alarm device inside. A radiation alarm device is arranged in the shielding device to monitor the radiation state at any time.

In one embodiment, the shielding device further comprises an illumination system inside. A good lighting system is arranged in the shielding device and used for indoor lighting.

In one embodiment, the shielding device further comprises an operating state indicator lamp. The shielding device is provided with a radiation system working state indicating lamp above the rotating door 2 and used for indicating the working state of the radiation system.

In one embodiment, the shielding device further comprises a socket. A socket is arranged in the shielding device, an external output power supply is provided for the machine room, and the socket is used for supplying power to the user auxiliary equipment and supplying power to the maintenance equipment.

In an optional implementation manner of the embodiment of the application, before the base is installed, the base support needs to be installed first, the base support includes the main machine lower support and the bed lower support, the main machine lower support and the bed lower support are hung in the pit, the main machine lower support is leveled through the cushion block assembly, and then the main machine lower support and the bed lower support are fixed through the expansion anchor bolt.

According to a second aspect of embodiments of the present application, there is provided a radiation system comprising the shielding device described above.

Because the radiation system in this application embodiment includes foretell shield assembly, can set up shield assembly's shielding cabin on the base, shielding cabin and base place ground form shield assembly's the chamber that holds, and the radiation system is arranged in and is held the intracavity, and the shielding cabin shields the produced ray of radiation system, and the shielding cabin comprises a plurality of shielding shell 1 concatenations. A first opening and closing structure connected with the shielding cabin is arranged on the first surface of the shielding cabin. In addition, the base enables the installation of the shielding device to be simpler and more convenient. The shielding device in the embodiment can effectively shield ray radiation, so that the radiotherapy equipment in the embodiment of the application can also effectively shield the ray radiation, thereby ensuring the safety and avoiding the ray from causing injury to operators or other personnel when diagnosis and treatment are implemented.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. The utility model provides an open-close structure which characterized in that, open-close structure includes: the swing gate and the sensing rotate the first detection switch of door position, it is rotatory around slewing mechanism to rotate the door, slewing mechanism is connected with the switch and hits the piece, works as the swing gate is opened to the maximum position state, the switch hits the piece and triggers first detection switch.

2. The opening and closing structure according to claim 1, further comprising: a second detection switch sensing a position of the rotary door.

3. The opening and closing structure according to claim 2, wherein the swing door rotates around a swing mechanism, and a switch collision block is connected to the swing mechanism and triggers the second detection switch when the swing door is in a door closing state.

4. The opening and closing structure according to claim 1, further comprising: a third detection switch sensing the position of the rotary door.

5. The opening and closing structure according to claim 4, wherein the rotary door rotates around a rotary mechanism, the third detection switch is located on the closing surface in the closed state of the opening and closing structure, and the third detection switch is triggered when the rotary door is in the fully closed state.

6. The opening and closing structure according to claim 3, wherein the opening and closing structure is further provided with an electromagnet, the electromagnet is located on the closing surface of the opening and closing structure in the closing state, the electromagnet is connected with the second detection switch, and if the second detection switch is triggered, the electromagnet is electrified to provide suction force for closing the rotating door.

7. The opening and closing structure according to claim 5, wherein the opening and closing structure is further provided with an electromagnet, the electromagnet is located on the closing surface of the opening and closing structure in the closing state, the electromagnet is connected with the third detection switch, and if the third detection switch is triggered, the electromagnet is electrified to provide suction force for closing the rotating door.

8. The opening and closing structure according to claim 6 or 7, wherein the suction force required by the electromagnet is determined according to the weight of the rotating door.

9. A shielding device for use in a radiation system, said radiation system being disposed within said shielding device, said shielding device comprising:

the shielding cabin is provided with a containing cavity, the containing cavity contains the radiation system, and the shielding cabin shields rays generated by the radiation system;

the opening and closing structure is arranged on the first surface of the shielding cabin and connected with the shielding cabin, and the opening and closing structure is as claimed in any one of claims 1 to 8.