CN215332506U - Heavy mixed piston type shielding door - Google Patents

Abstract

The utility model discloses a heavy-mixed piston type shielding door which comprises a door frame and a door plate, wherein the door plate is inwards sunken towards the upper part of one side of the door frame and towards the left side and the right side to form a first step-shaped structure; a second stepped structure matched with the first stepped structure is arranged on the door frame; the first stepped structure and the second stepped structure are mutually embedded to form a labyrinth seal; and a lead plate is arranged at the first step-shaped structure in the door plate. According to the utility model, the first stepped structure and the second stepped structure are mutually embedded to form labyrinth seal, so that rays cannot directly penetrate out, and the lead plate is arranged to block the transmission of the rays, thereby improving the sealing property and the safety of the shielding door.

Description

Heavy mixed piston type shielding door

Technical Field

The utility model relates to the field of radiation medical treatment, in particular to a heavy-mixing piston type shielding door.

Background

When the gamma ray radiotherapy system is in a non-treatment state, the gamma rays released by the radioactive source must be shielded so as to ensure that the environment around the radiotherapy system is in a safe state; however, one side of the existing shielding door facing the door frame is a whole plane, the sealing performance is poor, rays can directly penetrate out from the gap between the door and the door frame and leak, and the injury is caused to medical staff and other personnel working on the periphery.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a heavy-mixing piston type shielding door.

The utility model has the innovation points that a first step-shaped structure is arranged on the door plate, and a second step-shaped structure which is mutually embedded with the first step-shaped structure is arranged on the door frame so as to form labyrinth seal, so that rays cannot directly penetrate out, and the sealing property of the shielding door is improved; the lead plate is arranged at the first step-shaped structure and can block ray transmission, and the safety of the shielding door is improved.

In order to realize the purpose of the utility model, the technical proposal of the utility model is as follows:

a heavy mixed piston type shielding door comprises a door frame and a door plate, wherein the door plate is inwards sunken towards the upper part of one side of the door frame and towards the left side and the right side of the door frame to form a first stepped structure; a second stepped structure matched with the first stepped structure is arranged on the door frame; the first stepped structure and the second stepped structure are mutually embedded to form a labyrinth seal; and a lead plate is arranged at the first step-shaped structure in the door plate. The door plate is provided with a first stepped structure, and the door frame is provided with a second stepped structure which is mutually embedded with the first stepped structure so as to form labyrinth seal, so that rays cannot directly penetrate out, and the sealing performance of the shielding door is improved; the lead plate is arranged at the first step-shaped structure and can block ray transmission, and the safety of the shielding door is improved.

Preferably, an accommodating cavity is formed in the lower portion of one side, away from the door frame, of the door panel, a base is arranged in the accommodating cavity, a speed reduction motor is arranged on the base, a synchronizing shaft assembly connected with the inner side wall of the accommodating cavity is arranged below the base, and driving rollers penetrating out of the bottom of the accommodating cavity are arranged at two ends of the synchronizing shaft assembly respectively; a driven roller which is positioned on the same straight line with the driving roller is arranged on one side of the lower end of the door plate, which is close to the door frame; a track matched with the roller is arranged on the ground; the gear motor is suitable for driving the synchronous shaft assembly to rotate through a transmission mechanism so as to drive the door plate to move along the track through the rotation of the driving roller. The gear motor drives the synchronizing shaft assembly to rotate through the transmission mechanism, so as to drive the roller to rotate, and the roller drives the door panel to move along the track.

Preferably, the base is provided with a right-angle gear box, and an input shaft of the right-angle gear box is detachably connected with a hand wheel; a clutch sliding sleeve is arranged in the containing cavity in a sliding manner and is suitable for connecting a tail shaft of the speed reducing motor and an output shaft of the right-angle gear box; the containing cavity is internally provided with a travel switch electrically connected with the speed reducing motor, and the travel switch is positioned on the moving travel of the clutch sliding sleeve. Under the condition of power failure, the clutch sliding sleeve is manually moved, so that the input shaft of the right-angle gear box is meshed with the tail shaft of the speed reducing motor, the input shaft in the right-angle gear box can be driven to rotate by rotating the hand wheel, the tail shaft of the speed reducing motor is driven to rotate by the clutch sliding sleeve, and then the synchronizing shaft assembly is driven to rotate by the transmission mechanism, so that the door plate is driven to move by the roller; the clutch sliding sleeve is moved reversely and locked by a screw, so that the input shaft of the right-angle gear box is separated from the tail shaft of the speed reducing motor; at the moment, the clutch sliding sleeve keeps in contact with a contact of the travel switch, the travel switch is in a closed state, and the speed reduction motor is electrified to normally run. The hand wheel is arranged to ensure that the door panel is manually opened and closed under special conditions such as power failure, accidents and the like.

Preferably, the transmission mechanism comprises a driving chain wheel, a driven chain wheel and an annular chain; the driving chain wheel is installed on a rotor of the speed reducing motor, the driven chain wheel is installed on the synchronous shaft assembly, and the annular chain is wound on the driving chain wheel and the driven chain wheel. The transmission mechanism adopts chain transmission, can realize long-distance transmission, and has reliable work, high efficiency, large transmission power and strong overload capacity.

Preferably, the door plate comprises a plurality of steel structures which are welded with each other and anchor bars which are uniformly welded on the steel structures; and concrete is poured on the anchor bars and the steel structure. The concrete structure has enough strength and hardness, and can not crack and deform when stressed and vibrated in the using process; the anchor bars can increase the deformation resistance of the door body.

Preferably, a steel mesh grid is arranged between the anchor bars. After the steel mesh grid is combined with the concrete, the strength of the concrete is enhanced.

The utility model has the beneficial effects that:

1. according to the utility model, the door plate is provided with the first stepped structure, and the door frame is provided with the second stepped structure which is mutually embedded with the first stepped structure, so that labyrinth seal is formed, rays cannot directly penetrate out, and the sealing property of the shielding door is improved; the lead plate is arranged at the first step-shaped structure and can block ray transmission, and the safety of the shielding door is improved.

2. According to the utility model, the hand wheel, the right-angle gear box, the clutch sliding sleeve and the travel switch are adopted, so that the door plate can be manually opened and closed under special conditions of power failure, accidents and the like.

3. Concrete is poured in the door plate, the concrete structure has enough strength and hardness, and the door plate cannot crack or deform when stressed and vibrated in the using process; the anchor bars can increase the deformation resistance of the door body.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the labyrinth seal.

Fig. 3 is a schematic structural view of the door frame.

Fig. 4 is a schematic structural diagram of the reduction motor, the synchronizing shaft assembly and the driving roller.

Fig. 5 is a schematic structural diagram of a travel switch and a clutch sliding sleeve.

Fig. 6 is a schematic structural diagram of the transmission mechanism.

In the figure:

1. a door panel; 11. a first ladder structure; 12. a steel structure; 13. anchoring ribs; 14. a lead plate; 2. a door frame; 21. a second stepped structure; 3. labyrinth sealing; 4. an accommodating chamber; 5. a machine base; 51. a reduction motor; 52. a right angle gear box; 53. a synchronizing shaft assembly; 54. a driving roller; 55. a driven roller; 6. a clutch sliding sleeve; 7. a travel switch; 8. a transmission mechanism; 81. a drive sprocket; 82. a driven sprocket; 83. an endless chain; 9. a track; 10. a handwheel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

The described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1 and 2, the heavy-mixed piston type shielding door comprises a door frame 2 and a door plate 1, wherein the door plate 1 comprises a plurality of steel structures 12 which are welded with each other, anchor bars 13 which are uniformly welded on the steel structures 12 and steel woven meshes which are arranged between the anchor bars 13; concrete is poured on the anchor bars 13, the steel structure 12 and the steel woven net.

As shown in fig. 2 and 3, the upper part and the left and right sides of one side of the door panel 1 facing the door frame 2 are both recessed inwards to form a first stepped structure 11, and the door frame 2 is provided with a second stepped structure 21 matched with the first stepped structure 11; the first stepped structure 11 and the second stepped structure 21 are mutually embedded to form a labyrinth seal 3 (see fig. 1); a lead plate 14 is arranged at the position, located at the first stepped structure 11, in the door panel 1, and the lead plate 14 is located in concrete.

As shown in fig. 4 and 5, an accommodating cavity 4 is arranged at the lower part of one side of the door panel 1 away from the door frame 2, and a closed door is arranged at the opening of the accommodating cavity 4; a base 5 is arranged in the accommodating cavity 4, a speed reducing motor 51 and a right-angle gear box 52 are arranged on the base 5, a clutch sliding sleeve 6 is arranged between a tail shaft of the speed reducing motor 51 and an output shaft of the right-angle gear box 52, and the clutch sliding sleeve 6 is arranged on the inner side wall of the accommodating cavity 4 in a sliding manner; the tail shaft of the speed reducing motor 51, the output shaft of the right-angle gear box 52 and the clutch sliding sleeve 6 are positioned on the same straight line; a travel switch 7 electrically connected with the speed reduction motor 51 is arranged above the clutch sliding sleeve 6, and a contact of the travel switch 7 is positioned on the moving stroke of the clutch sliding sleeve 6. The input shaft of the right-angle gear box 52 is detachably connected with a hand wheel 10; a synchronous shaft assembly 53 is arranged below the base 5, two ends of the synchronous shaft assembly 53 are respectively provided with a bracket connected with the inner side wall of the accommodating cavity 4, two ends of the synchronous shaft assembly 53 are respectively rotatably provided with a driving roller 54 penetrating out of the bottom of the accommodating cavity 4, and the driving roller 54 is positioned at the outer side of the bracket; one side of the lower end of the door panel 1 close to the door frame 2 is provided with a driven roller 55 (see fig. 6) which is in the same straight line with the driving roller 54, and the ground is provided with a track 9 matched with the roller. A transmission mechanism 8 is arranged between one end of the speed reducing motor 51 far away from the right-angle gear box 52 and the synchronizing shaft assembly 53, and the speed reducing motor 51 drives the synchronizing shaft assembly 53 to rotate through the transmission mechanism 8 so as to drive the door panel 1 to move along the track 9 through the driving roller 54 and the driven roller 55.

As shown in fig. 6, the transmission mechanism 8 includes a driving sprocket 81, a driven sprocket 82, and an endless chain 83; the driving chain wheel 81 is arranged on the front shaft of the speed reducing motor 51, and the driven chain wheel 82 is arranged on the synchronizing shaft assembly 53 and is positioned on one side of the bracket far away from the driving roller 54; an endless chain 83 is looped around the drive sprocket 81 and the driven sprocket 82.

In view of the above, it is desirable to provide,

when the remixing piston type shielding door is used, the clutch sliding sleeve 6 is manually moved, so that the clutch sliding sleeve 6 is sleeved on the input shaft of the right-angle gear box 52 and the clutch sliding sleeve 6 is locked by a screw; at this time, the clutch sliding sleeve 6 is in contact with a contact of the travel switch 7, the travel switch 7 is in a closed state, the speed reduction motor 51 is powered to drive the driving sprocket 81 to rotate, the driving roller 54 is driven to rotate through the driven sprocket 82 and the annular chain 83, and the driving roller and the driven roller 55 drive the door panel 1 to move along the track 9, so that the first stepped structure 11 is embedded into the second stepped structure 21 to form the labyrinth seal 3; during the outage, reverse movement clutch sliding sleeve 6 for the input shaft of right angle gear box 52 and gear motor 51's tail-shaft are located the both ends of clutch sliding sleeve 6 respectively, rotate the hand wheel 10 and drive input shaft rotation in the right angle gear box 52, drive gear motor 51's tail-shaft through clutch sliding sleeve 6 and rotate, and then drive synchronizing shaft assembly 53 through drive mechanism 8 and rotate, and drive door plant 1 through initiative gyro wheel 54, driven roller 55 and remove.

Claims (6)

1. A heavily-mixed piston type shielding door comprises a door frame and a door plate, and is characterized in that the upper part of one side, facing the door frame, of the door plate and the left and right sides of the door plate are both inwards sunken to form a first stepped structure; a second stepped structure matched with the first stepped structure is arranged on the door frame; the first stepped structure and the second stepped structure are mutually embedded to form a labyrinth seal; and a lead plate is arranged at the first step-shaped structure in the door plate.

2. The heavy-mixed piston type shielding door as claimed in claim 1, wherein a receiving cavity is formed in a lower portion of one side of the door panel, which is far away from the door frame, a base is arranged in the receiving cavity, a speed reduction motor is arranged on the base, a synchronizing shaft assembly connected with a side wall in the receiving cavity is arranged below the base, and two ends of the synchronizing shaft assembly are respectively provided with a driving roller which penetrates through the bottom of the receiving cavity; a driven roller which is positioned on the same straight line with the driving roller is arranged on one side of the lower end of the door plate, which is close to the door frame; a track matched with the roller is arranged on the ground; the gear motor is suitable for driving the synchronous shaft assembly to rotate through a transmission mechanism so as to drive the door panel to move along the track through the driving roller.

3. The remixing piston type shield door of claim 2, wherein a right-angle gear box is arranged on the machine base, and a hand wheel is detachably connected to an input shaft of the right-angle gear box; a clutch sliding sleeve is arranged in the containing cavity in a sliding manner and is suitable for connecting a tail shaft of the speed reducing motor and an output shaft of the right-angle gear box; the containing cavity is internally provided with a travel switch electrically connected with the speed reducing motor, and the travel switch is positioned on the moving travel of the clutch sliding sleeve.

4. The remixing piston screen door of claim 3 wherein the drive mechanism includes a drive sprocket, a driven sprocket, and an endless chain; the driving chain wheel is installed on a front shaft of the speed reducing motor, the driven chain wheel is installed on the synchronizing shaft assembly, and the annular chain is wound on the driving chain wheel and the driven chain wheel.

5. The heavy mixed piston type shielding door according to claim 1, wherein the door plate comprises a plurality of steel structures welded with each other, and anchor bars uniformly welded on the steel structures; concrete is poured into the anchor bars and the steel structure.

6. The remixing piston screen door of claim 5 wherein steel mesh grid is positioned between the anchor bars.

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