A fixed-point irradiation experimental system

Abstract

The present invention relates to a fixed-point irradiation experiment system, comprising a lifting door, which is fixed at a through hole in the wall of an irradiation room, and the drag chain of the suspension chain conveyor of the irradiation room passes through the lifting door, and the lifting door comprises: a guide door frame, which is fixed at both sides of the through hole, and a first sensor is arranged on the top of the guide door frame; a telescopic door plate, which comprises a first door plate and a second door plate, and the first door plate and the second door plate are connected by a spring; a second sensor, which is fixed on the frame of the suspension chain conveyor and is used to detect whether the hanging box receiving irradiation passes through the telescopic door plate safely. The present invention realizes the automatic opening and closing of the transmission channel entering the irradiation room through the through hole in the wall, and avoids the conveying chain at the same time, so as to realize a safe and efficient irradiation transmission experiment.

Description

Technical Field

[0001] The invention belongs to the field of irradiation technology, relates to irradiation experiment technology, and in particular to a fixed-point irradiation experiment system. Background Art

[0002] The small-dose fixed-point irradiation experiment is carried out in a closed manner, in which the irradiated object needs to enter the irradiation room through the transmission channel on the wall of the irradiation room. In the prior art, a safety door is set at the entrance of the transmission channel on the wall, that is, the safety door needs to be closed after the irradiated object enters the irradiation room to prevent people or animals from entering the irradiation room and causing source failure.

[0003] However, since the transmission channel on the wall is small, generally 50 cm high and 50 cm wide, high accuracy is required for the automatic transmission door, and the drag chain of the hanging chain conveyor passes through the transmission channel, a special safety door is required to be suitable for the irradiation room of small-dose fixed-point irradiation experiments. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a fixed-point irradiation experiment system to effectively solve the low lifting accuracy of traditional safety doors in the prior art and the technical problem of the passage of the drag chain of the hanging chain conveyor during the transmission process.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] A fixed-point irradiation experiment system is fixed at a through hole in the wall of an irradiation room, and the drag chain of the hanging chain conveyor of the irradiation room passes through the lifting door, and the lifting door comprises:

[0007] A guide door frame is fixed on both sides of the through hole, guide grooves are symmetrically arranged on both sides of the guide door frame, a driving rod is arranged on the outer side of the guide groove, and a first sensor is arranged on the top of the door frame for detecting whether a hanging box receiving irradiation passes through;

[0008] The telescopic door panel comprises a first door panel and a second door panel, wherein the first door panel and the second door panel are connected by a spring, wherein the second door panel is connected to the driving rod, and the first door panel retracts into the interior of the second door panel when it hits the drag chain of the suspension chain conveyor;

[0009] A second sensor, which is fixed on the frame of the suspension chain conveyor and is used to detect whether the irradiated hanging box passes through the telescopic door panel;

[0010] The controller is used to drive the telescopic door plate to move on the driving rod to realize the opening and closing of the telescopic door.

[0011] Preferably, the guide groove interface is U-shaped, and a fixing plate is provided on the unopened side thereof for fixing the guide groove to the two sides of the through hole.

[0012] Preferably, the driving rod comprises a guide rod, the controller comprises a control module and a driving module fixed to the second door panel, and the driving module is sleeved on the outer side of the guide rod.

[0013] Preferably, the driving module is a linear cylinder, which is fixed to the second door panel. The controller receives signals from the first sensor and the second sensor to control the linear cylinder to reciprocate on the guide rod.

[0014] Preferably, the driving module includes a ball screw, on which is a sleeve, which is fixed to the second door panel. The controller receives signals from the first sensor and the second sensor, controls the motor to drive the screw to rotate, drives the sleeve to rotate, and further drives the second door panel to reciprocate on the guide rod.

[0015] Preferably, the first door panel and the second door panel are connected together via a sliding groove, and the bottom of the second door panel and the bottom of the first door panel are connected via a spring, and when not affected by external force, the spring is in an extended state.

[0016] Preferably, the second door panel includes an inner panel and an outer panel, and the first door panel is arranged between the inner panel and the outer panel.

[0017] Preferably, a notch is provided at the contact point between the first door panel and the drag chain of the suspension chain conveyor for avoiding the drag chain of the suspension chain conveyor, and metal soft bristles are provided in the notch for preventing radiation rays from escaping the irradiation room.

[0018] Preferably, a soft brush is provided between the inner plate and the outer plate to prevent dust from entering between the inner plate and the outer plate.

[0019] The advantages and positive effects of the present invention are:

[0020] The invention is scientifically and reasonably designed. The lifting door includes a guide door frame and a telescopic door panel. The guide door frame is fixed on both sides of the through hole. The guide door frame is symmetrically provided with guide grooves on both sides. The outer side of the guide groove is provided with a driving rod. The top of the guide door frame is provided with a first sensor. The telescopic door panel includes a first door panel and a second door panel. The first door panel and the second door panel are connected by a spring. The second door panel is connected with the driving rod. When the first door panel hits the drag chain of the suspension chain conveyor, it retracts into the inside of the second door panel. A second sensor is provided on the frame of the suspension chain conveyor. The controller is provided on the guide door frame to drive the telescopic door panel to move on the driving rod. Under the feedback control of the first sensor and the second sensor, the controller realizes the automatic opening and closing of the logistics channel entering the irradiation room through the through hole in the wall by controlling the telescopic door panel. At the same time, the cooperation of the first door panel and the second door panel in the telescopic door panel enables the door panel to automatically avoid the conveyor chain when encountering the conveyor chain, realizing the effect of bypassing the conveyor chain to completely close the through hole, providing a safe and reliable guarantee for the safe operation of the irradiation room and the smooth entry and exit of the hanging box in the irradiation room. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a state diagram of the present invention;

[0022] Figure 2 yes Figure 1 Main view of the middle safety lifting door;

[0023] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional structure;

[0024] Figure 4 yes Figure 3 The enlarged schematic diagram at E in the middle;

[0025] Figure 5 yes Figure 1 Side view of the retractable door panel of the safety lifting door. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0027] A fixed-point irradiation experiment system includes a lifting door, which is fixed at a through hole in the wall of the irradiation room. Figure 1 , Figure 2 and Figure 3 As shown, the safety lifting door is fixed at the through hole 2 of the wall 1 of the irradiation room, and the drag chain 4 of the hanging chain conveyor of the irradiation room passes through the lifting door 3. The lifting door 3 includes:

[0028] A guide door frame is fixed on both sides of the through hole 2, and guide grooves 16 are symmetrically arranged on both sides of the guide door frame. A driving rod is arranged on the outer side of the guide groove 16, and a first sensor 9 is arranged on the top of the door frame for detecting whether a hanging box receiving irradiation passes through;

[0029] The telescopic door panel includes a first door panel 14 and a second door panel 15, wherein the first door panel 14 and the second door panel 15 are connected by a spring 17, wherein the second door panel 15 is connected to the driving rod, and the first door panel 14 retracts into the interior of the second door panel 15 when it hits the drag chain 4 of the suspension chain conveyor;

[0030] A second sensor 5, which is fixed on the frame of the hanging chain conveyor and is used to detect whether the irradiated hanging box passes through the telescopic door panel;

[0031] The controller 10 is used to drive the telescopic door panel to move on the driving rod to realize the opening and closing of the telescopic door.

[0032] Embodiment 1

[0033] The first door panel 14 and the second door panel 15 form a telescopic door panel, which moves up and down in the guide groove 16. When the first door panel 14 hits the drag chain 4 of the hanging chain conveyor, it retracts into the second door panel 15, realizing the automatic opening and closing of the logistics channel entering the irradiation room through the wall through hole, while avoiding the conveyor chain to prevent the radiation radiation from escaping the irradiation room. The telescopic door panel moves up and down in the guide groove 16 through the cooperation of the first sensor 9, the second sensor 5 and the controller 10. When the hanging box approaches the telescopic door panel, the first sensor 9 detects the hanging box and sends the detection signal to the controller 10. The controller 10 controls the driving module 7 to drive the telescopic door panel to slide in the guide groove 16, and the guidance of the driving module 7 is realized by the guide rod 8 in the driving rod;

[0034] like Figure 2 , Figure 3 and Figure 5 As shown, as a preferred embodiment of the present invention, the driving rod includes a guide rod 8, the controller 10 includes a control module and a driving module 7 fixed to the second door panel, the driving module 7 is sleeved on the outside of the guide rod, and the driving module 7 is fixed to the second door panel 15 through a fixing plate 6;

[0035] The driving module 7 is a linear cylinder, which is fixed to the second door panel. The controller receives signals from the first sensor 9 and the second sensor 5, and controls the linear cylinder to reciprocate on the guide rod. The linear cylinder is a prior art, and its characteristic is that the cylinder barrel can move along the piston rod. In this embodiment, the cylinder barrel is the driving module 7, and the piston rod is the guide rod 8.

[0036] The first door panel 14 and the second door panel 15 are connected together by a slide groove, and the bottom of the second door panel 15 and the bottom of the first door panel 14 are connected by a spring 17. When not affected by external force, the spring 17 is in an extended state. When affected by the drag chain 4 of the hanging chain conveyor, the spring 17 is compressed. The maximum limit of compression is that the limit block 12 fixed on the first door panel 14 contacts the top of the second door panel 15.

[0037] Preferably, the second door panel 15 includes an inner panel 18 and an outer panel 19 , and the first door panel is disposed between the inner panel 18 and the outer panel 19 .

[0038] Preferably, the first sensor 9 is implemented by a camera 13, which collects the position information of the hanging box and the shape information at the same time, so as to distinguish whether the object entering the through hole is a hanging box. When a person or other object enters, the controller 10 does not open the telescopic door panel, and sounds an alarm through the alarm light 11 and the buzzer.

[0039] Embodiment 2

[0040] On the basis of the first embodiment, a notch is provided at the contact point between the first door panel 14 and the drag chain 4 of the suspension chain conveyor for avoiding the drag chain of the suspension chain conveyor, and metal soft hair is provided in the notch for preventing the radiation from escaping the irradiation room.

[0041] Preferably, a soft brush is provided between the inner plate 18 and the outer plate 19 to prevent dust from entering between the inner plate and the outer plate.

[0042] The foregoing has broadly outlined some aspects and features of various embodiments, which should be construed as merely illustrative of various potential applications. Other beneficial results may be obtained by applying the disclosed information in different ways or by combining various aspects of the disclosed embodiments. Other aspects and a more comprehensive understanding may be obtained by reference to the detailed description of the exemplary embodiments in conjunction with the accompanying drawings, within the scope defined by the claims.

[0043] In addition, the present invention also discloses the following technical solutions:

[0044] The driving module 7 includes a ball screw, on which a sleeve is provided, which is fixed to the second door panel. The controller receives signals from the first sensor 9 and the second sensor 5, controls the motor to drive the screw to rotate, drives the sleeve to rotate, and then drives the second door panel 15 to reciprocate on the guide rod 8.

[0045] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A fixed-point irradiation experiment system, comprising a lifting door, which is fixed at a through hole in the wall of an irradiation room, and the drag chain of the hanging chain conveyor of the irradiation room passes through the lifting door, characterized in that: The lifting door includes a guide door frame and a telescopic door panel, the guide door frame is fixed on both sides of the through hole, guide grooves are symmetrically arranged on both sides of the guide door frame, a driving rod is arranged on the outer side of the guide groove, and a first sensor is arranged on the top of the guide door frame; the telescopic door panel includes a first door panel and a second door panel, the first door panel and the second door panel are connected by a spring, wherein the second door panel is connected to the driving rod, and the first door panel retracts into the inside of the second door panel when it hits the drag chain of the hanging chain conveyor; a second sensor is arranged on the frame of the hanging chain conveyor, and a controller is arranged on the guide door frame for driving the telescopic door panel to move on the driving rod, the guide groove interface is U-shaped, and a fixing plate is arranged on the unopened side thereof for fixing the guide groove on both sides of the through hole, the driving rod includes a guide rod, and the controller includes a control module and a driving module fixed to the second door panel, the driving module is sleeved on the outer side of the guide rod, and the driving module is a linear The cylinder, the linear cylinder and the second door panel are fixed together, the controller receives signals from the first sensor and the second sensor, and controls the linear cylinder to reciprocate on the guide rod, the driving module includes a ball screw, the ball screw is provided with a screw sleeve, the screw sleeve is fixed together with the second door panel, the controller receives signals from the first sensor and the second sensor, controls the motor to drive the screw to rotate, drives the screw sleeve to rotate, and then drives the second door panel to reciprocate on the guide rod, the first door panel and the second door panel are connected together by a slide groove, the bottom of the second door panel and the bottom of the first door panel are connected by a spring, when not affected by external force, the spring is in an extended state, the second door panel includes an inner panel and an outer panel, the first door panel is arranged between the inner panel and the outer panel, a notch is provided at the contact between the first door panel and the drag chain of the suspension chain conveyor, which is used to avoid the drag chain of the suspension chain conveyor, and metal soft bristles are provided in the notch, and a soft brush is provided between the inner panel and the outer panel.

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