Alarm device and method for monitoring oxidation degree of lead plate and lead plate radiation-proof door

Abstract

The invention belongs to the field of alarm devices, and particularly relates to an alarm device and method for monitoring the oxidation degree of a lead plate and a lead plate anti-radiation door. The alarm device comprises a base which comprises a bottom plate and at least one annular body, and the bottom plate is provided with a guide rail; the middle of the transmission block is matched with the bottom plate and can move relative to the bottom plate, one end face side of the transmission block is provided with a radial margin plate and a roller, and the other end face side extends to the annular body; the transmission block is sleeved with the spring, one end of the spring makes contact with the bottom plate, the other end of the spring makes contact with the radial edge plate, and elastic force can be applied to the transmission block; the detection unit is fixed in the annular body, is matched with the transmission block, and comprises a sensing part and an integrated circuit part, so that when the transmission block moves relative to the bottom plate, the sensing part on the detection unit can generate physical quantity change, and a sensing signal can be fed back to the integrated circuit part; and the driving unit is matched with the base and can drive the base to move. According to the invention, monitoring and early warning of the oxidation degree of the surface of the lead plate can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of alarm devices, and in particular to an alarm device and method for monitoring the oxidation degree of lead plates, and a lead plate radiation-proof door. Background Art

[0002] Lead plates are often used in radiation protection products due to their special physical properties. The radiation protection plates used in radiation protection doors are mostly lead plates and their alloys, and the use of radiation protection plates made of new materials accounts for a relatively low proportion. The manufacturing process of lead plate radiation protection doors mainly includes the processing of lead plates and their installation with supporting steel plates and pressing frames. The processing requirements for lead plates are very strict, and the accuracy of thickness and size must be guaranteed, and the surface must be flat and free of significant defects. Both the supporting steel plate and the pressing frame must ensure stability and strength. After the lead plate is assembled with the supporting steel plate, the pressing frame, etc. to form the core of a complete lead plate radiation protection door, the lead plate is sandwiched between the supporting steel plate and the pressing frame, and it can be ensured that after the lead plate is fixed between the supporting steel plate and the pressing frame, it can remain in a flat state.

[0003] Affected by complex air composition, humidity, acidity and alkalinity, the lead plate will produce different degrees of oxidation after long-term contact with the air, and it is easy to form oxidation spots on the surface of the lead plate, which will change the physical properties of the lead plate surface, and affect the static friction state between the lead plate, the steel plate and the pressing frame, that is, it will adversely affect the state of stable combination between the three, weaken the clamping and fixing ability of the steel plate and the pressing frame to the lead plate, and easily increase the tendency of the lead plate to settle. At the same time, given the irregularity of the process and degree of oxidation of the lead plate, it is not easy to grasp the approximate interval before the degree of oxidation on the surface of the lead plate will have a significant impact on its settlement. The current situation is that in order to ensure the radiation protection effect of the lead plate radiation proof door, the frequency of inspection of the settlement of the lead plate can only be increased, and the lead plate radiation proof door needs to be frequently disassembled. It is not only labor-intensive and time-consuming, but also easy to damage the lead plate radiation proof door. Summary of the invention

[0004] In response to the above problems, the present invention provides an alarm device, method and lead plate radiation proof door for monitoring the oxidation degree of lead plates, which analyzes and determines the flatness of the lead plate surface by detecting the concave-convex changes on the lead plate surface after oxidation, thereby monitoring the oxidation degree of the lead plate surface, which helps to achieve the purpose of monitoring and early warning of the oxidation degree of the lead plate.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an alarm device for monitoring the oxidation degree of lead plates, comprising: The base comprises a bottom plate and at least one annular body, each annular body is fixed to the same side of the bottom plate through a supporting structure, so that the bottom plate and the annular body are relatively parallel and a vertical distance is formed between the opposite surfaces of the two; a guide rail is arranged on the bottom plate at a side away from the annular body; The transmission block has a middle portion that matches the bottom plate and enables the transmission block to move relative to the bottom plate along the axial direction of the annular body; a radial edge plate is formed on the transmission block at one end face side away from the annular body and a roller is pivotally arranged, the axis extension direction of the roller is perpendicular to the axial direction of the annular body and at least a part of the wheel surface of the roller extends outward relative to the end face of the transmission block; a gap is formed between the radial edge plate and the bottom plate; the other end face side of the transmission block extends to the annular cavity direction of the annular body; A spring is sleeved on the transmission block and one end of the spring contacts the end surface of the bottom plate, and the other end contacts the end surface of the radial edge plate, so that the spring can exert an elastic force along the axial direction of the annular body on the transmission block, thereby causing the transmission block to have a tendency to move toward one end side thereof; The detection unit is fixedly arranged in the annular body and can match with the end surface side of the transmission block extending into the annular body; it includes a sensing part and an integrated circuit part; when the transmission block moves in the axial direction relative to the bottom plate, the sensing part on the detection unit can change the physical quantity, and can feed back the sensing signal to the integrated circuit part; The driving unit is matched with the base and can selectively drive the base to move along the guide rail.

[0006] In the above scheme, a transmission block is respectively configured for each annular body, and a spring and a detection unit are respectively configured for each transmission block. After receiving the real-time feedback sensor signal, the integrated circuit unit can analyze and process the sensor signal to obtain data that can reflect the movement / motion status of the transmission block, and convert it to obtain a result signal related to vibration.

[0007] The extending direction of the guide rail is perpendicular to the extending direction of the axis of the roller, and a plane formed by rotating the extending direction of the guide rail is parallel to a plane formed by rotating the extending direction of the axis of the roller.

[0008] Optionally, it also includes a cylinder that matches the annular body one-to-one. A threaded through hole that matches the annular body one-to-one is formed on the bottom plate, and the cylinder and the threaded through hole are matched through a threaded structure, so that the cylinder can move axially along the annular body relative to the bottom plate. The middle part of the transmission block is sleeved in the cylinder cavity of the cylinder, so that the transmission block can move axially along the annular body relative to the cylinder. One end of the spring facing the bottom plate contacts the end surface of the cylinder. Preferably, a countersunk hole is formed on the end surface of the cylinder, so that the end of the spring extends into the countersunk hole and contacts the inner bottom surface of the countersunk hole.

[0009] Optionally, it also includes a spiral ring body that matches the annular body one-to-one. An axial flange is formed on the free end face of the annular body so that the spiral ring body and the axial flange are fixedly matched. A radial flange is formed on the inner wall of the annular body.

[0010] The detection unit is fixedly clamped between the radial flange and the spiral ring body.

[0011] Optionally, the sensing part in the detection unit is a strain sensing part. The detection unit also includes an elastic membrane fixedly arranged in the annular body, and the strain gauge part on the strain sensing part is fixedly arranged on the elastic membrane.

[0012] The elastic membrane body can be fixedly arranged inside an outer ring body, and the outer ring body is fixedly clamped between the radial flange and the spiral ring body, so that the elastic membrane body is fixed inside the annular body.

[0013] The end face side of the transmission block extending into the annular body is fixedly connected to the middle position of the elastic membrane body, so that when the transmission block moves relative to the base plate, the elastic membrane body can be elastically deformed, and the strain gauge part is deformed synchronously, causing the sensing signal of the strain type sensing part to change.

[0014] An axial hole may be formed at the center of the elastic membrane. Correspondingly, a column and a stud section are formed on the transmission block. The stud section is relatively located on the outer end side of the column. The outer diameter of the column is larger than the outer diameter of the stud section. The column can pass through the axial hole of the elastic membrane. Two disc-shaped parts are matched on the column and the disc surfaces of the two disc-shaped parts are opposite to each other, and the elastic membrane can be clamped in the middle. After a nut is arranged on the stud section, the two disc-shaped parts can be pressed axially, so that the two disc-shaped parts clamp and fix the elastic membrane, thereby achieving the purpose of fixed connection between the transmission block and the middle area of ​​the elastic membrane.

[0015] After receiving the real-time feedback sensor signal, the integrated circuit unit can analyze and process the sensor signal to obtain relevant data that can reflect the movement / vibration status of the transmission block.

[0016] Optionally, the drive unit includes a motor assembly and a rack portion. The motor assembly is fixed to the free end surface side of the annular body, and the gear at the output end of the motor assembly can mesh and match with the rack portion.

[0017] Optionally, three bottom plates are provided on the base, so that the three bottom plates are connected as a whole and arranged in a row along the extension direction of the guide rail. Two annular bodies are arranged on the bottom plate at the center, and one annular body is arranged on each of the other two bottom plates. The extension direction of the guide rails arranged on each bottom plate is consistent. In other words, it can also be understood that the base has only one bottom plate, and the bottom plate is divided into three areas along the length extension direction of the guide rail, and two annular bodies are arranged in the center area, and one annular body is arranged in the two side areas.

[0018] The rollers on the four transmission blocks corresponding to the four annular bodies are distributed in three rows, so that a spacing interval is formed between the two rollers in the middle area, and the two rollers in the two side areas correspond to each other in the extension direction of the spacing interval and are respectively close to the two ends of the spacing interval, so that the walking coverage areas of the four rollers can overlap to form a long strip-shaped coverage area.

[0019] A method for monitoring the degree of oxidation of lead plates, including the following requirements and processes: When the driving unit drives the base to move along the guide rail, the wheel surface of the roller is kept pressed against the surface of the lead plate and the roller can rotate around its pivot axis; The phenomenon of alternating contact between the wheel surface of the roller and the main surface of the lead plate and / or the oxidized spots formed on the surface of the lead plate is used to cause the transmission block to make irregular reciprocating / slipping motion relative to the bottom plate, so that the physical quantity of the sensing part changes and the sensing signal is fed back to the integrated circuit part in real time; The integrated circuit unit analyzes and processes the received sensor signal to obtain real-time frequency and / or real-time amplitude parameters / results that can reflect the motion state of the transmission block, and compares them with the preset frequency warning threshold and / or amplitude warning threshold, and determines whether to issue a warning based on the comparison result.

[0020] A lead plate radiation proof door comprises any one of the above-mentioned alarm devices for monitoring the oxidation degree of the lead plate.

[0021] The beneficial effect of the present invention is as follows: in the alarm device and method involved in the present invention, a roller is set to contact the surface of the lead plate, and can intermittently drive the roller to move relative to the lead plate to ensure that the roller and the surface of the lead plate maintain a good contact state during the relative movement. By taking advantage of the phenomenon that the surface flatness of the lead plate will change after oxidation and can affect the motion state of the transmission block fixedly matched with the roller, a vibration signal associated with relevant parameters such as the concave and convex state and / or distribution state of the oxidation spot is obtained, and the flatness of the lead plate surface is analyzed and judged according to the change of the vibration signal, which helps to monitor and evaluate the oxidation degree of the lead plate surface and achieve the purpose of giving early warning in time.

[0022] In addition, the lead plate radiation-proof door of the present invention can obtain the change of the oxidation degree of the lead plate surface by monitoring the flatness of the lead plate surface in the radiation-proof door when the radiation-proof door is in normal use, so as to achieve the purpose of real-time monitoring and timely warning of the oxidation degree of the lead plate. Therefore, the present invention helps to evaluate the oxidation degree of the lead plate by analyzing and judging and obtaining relevant vibration data parameters or waveform diagrams that can characterize the concave-convex condition and / or distribution condition of the oxidation spots formed on the surface of the lead plate, and can provide early warning support, which helps to significantly reduce the number of times the radiation-proof door is disassembled due to checking the settlement condition of the lead plate in the radiation-proof door. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the split structure of the present invention.

[0024] Figure 2 It is a partial schematic diagram of the present invention in the usage scenario (lead plate flattened state).

[0025] Figure 3 It is a structural schematic diagram of the base in the present invention.

[0026] Figure 4 This is a schematic diagram of the roller distribution state in the usage scenario of the present invention (lead plate upright state).

[0027] Figure 5 It is a schematic diagram of the present invention deployed in a usage scenario.

[0028] In the figure: 100 lead plate, 101 oxidation spot, 102 covering area, 103 spacing interval; 200 supporting steel plate; 300 pressing frame; 400 alarm device; 10 base, 11 bottom plate, 111 threaded through hole, 112 arm block, 113 guide rail, 12 annular body, 121 radial flange, 13 axial flange; 20 transmission block, 21 radial edge plate, 22 roller, 23 column, 24 stud segment; 30 cylinder, 31 light column through hole, 32 countersunk hole; 40 spring; 50 spiral ring body, 51 annular flange; 60 detection unit, 61 elastic membrane body, 62 strain gauge part, 63 disc-shaped part; 70 drive unit, 71 motor assembly, 72 rack part. DETAILED DESCRIPTION

[0029] The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the terms such as "upper", "lower", "front", "back", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical contents.

[0030] like Figures 1 to 5An alarm device 400 for monitoring the oxidation degree of a lead plate is shown, comprising a base 10, a transmission block 20, a cylinder 30, a spring 40, a spiral ring 50, a detection unit 60, a drive unit 70 and a control unit (not shown). When the alarm device 400 is used in the field of monitoring the oxidation degree of a lead plate 100, a plurality of alarm devices 400 are generally configured, and the alarm devices 400 are reasonably distributed near the relative edge sides of the lead plate 100. This is because the surface oxidation process / speed near the edge side of the lead plate 100 is significantly faster than the surface oxidation speed inside the lead plate 100.

[0031] like Figures 1 to 4 As shown, the base 10 includes a bottom plate 11 and at least one annular body 12. A plurality of pillars extending along the axial direction of the annular body 12 are formed on the bottom plate 11, and the plurality of pillars are divided into one group or multiple groups ( Figures 1 to 3 The scheme shows that there are two groups, then for Figure 4 The middle solution requires four groups), and the multiple pillars in each group are evenly spaced around the circumference. A ring body 12 is fixedly provided at the free end of each group of pillars, and each ring body 12 is kept at a vertical distance relative to the bottom plate 11. Generally, multiple ring bodies 12 are distributed in the same plane; in special cases, multiple ring bodies 12 can also be distributed in multiple relatively parallel planes, which can be flexibly adjusted according to the conditions of the use scenario.

[0032] A threaded through hole 111 is formed on the bottom plate 11 and corresponding to each annular body 12. The threaded through hole 111 is generally coaxial with the corresponding annular body 12. The inner diameter of the threaded through hole 111 is greater than the inner diameter of the annular body 12.

[0033] A plurality of arm blocks 112 are formed on the end surface of the bottom plate 11 and away from the annular body 12, and the arm blocks 112 are matched with a plurality of guide rails 113 extending in the same direction, so that the bottom plate 11 or the base 10 can reciprocate along the guide rails 113. When the alarm device 400 is applied and installed in a lead plate radiation proof door, the guide rails 113 are fixedly installed on the top pressure frame 300 on the lead plate radiation proof door, and the base 10 can move along the guide rails 113 relative to the lead plate 100.

[0034] A radial flange 121 is formed on the inner wall of the annular body 12, and the radial flange 121 can be annular or in the form of a plurality of radial flange arms dispersed around the circumference. The radial flange 121 is used to fix and install the detection unit 60. At the same time, an axial flange 13 is formed on the free end surface of the annular body 12. An external thread is formed on the outer wall of the axial flange 13, so that the spiral ring body 50 can be fixedly matched with the axial flange 13, and can be used to fix and install the detection unit 60.

[0035] The cylinder 30 is arranged in the threaded through hole 111 formed on the base plate 11 through a threaded structure, so that the cylinder 30 can move axially relative to the base plate 11, and the axial position of the cylinder 30 relative to the base plate 11 is adjusted, that is, the position of the cylinder 30 relative to the base plate 11 is adjusted, so as to adjust the initial pre-compression amount of the spring 40 and the sensitivity of the roller 22 to sense the uneven state of the lead plate 100 surface, which will be specifically mentioned below.

[0036] The middle part of the transmission block 20 is inserted into the cylinder cavity (i.e., the light column through hole 31) of the cylinder body 30, so that the transmission block 20 can move relative to the cylinder body 30, that is, relative to the bottom plate 11 along the axial direction (of the annular body 12). The middle part of the outer wall of the transmission block 20 and the light column through hole 31 can be in a line-surface matching relationship, and the illustrated scheme is a surface-surface matching relationship.

[0037] A radial edge plate 21 and a roller 22 are pivotally arranged on one end face of the transmission block 20, and the axial extension direction of the roller 22 is perpendicular to the moving direction of the transmission block 20 (i.e., the axial direction of the annular body 12), and the wheel surface of the roller 22 at least partially extends outward relative to the end face of the transmission block 20, and can be pressed against the surface side of the lead plate 100, and come into contact with the main body surface of the lead plate 100 and the oxidation spots 101 on the surface. A vertical spacing is formed between the radial edge plate 21 and the bottom plate 11. The other end face side of the transmission block 20 extends to the annular cavity direction of the annular body 12. Figure 1 , Figure 2 As shown, an axially extending column 23 is formed on the other end surface side of the transmission block 20 , and a threaded section 24 is formed at the end of the column 23 .

[0038] The axis of the spring 40 is arranged along the axial direction of the annular body 12 and is sleeved on the transmission block 20, and one end of the spring 40 contacts the bottom plate 11, and the other end contacts the end surface of the radial edge plate 21, so that the spring 40 can exert an elastic thrust along the axial direction (of the annular body 12) on the transmission block 20. In the figure, the end of the spring 40 is specifically inserted into the countersunk hole 32 formed on the end surface of the cylinder 30, so that the end of the spring 40 can stably and reliably maintain a state of matching with the cylinder 30 or the bottom plate 11, so that the elastic force of the spring 40 is basically distributed in the axial direction, so that the roller 22 can maintain a state of pressing against the surface side of the lead plate 100.

[0039] An annular flange 51 extending in the axial direction is formed inside the spiral ring body 50. After the spiral ring body 50 is matched with the axial flange 13, the annular flange 51 can extend into the inner cavity of the axial flange 13.

[0040] The detection unit 60 is fixedly disposed in the annular body 12 and can match with the other end surface side of the transmission block 20 extending into the annular cavity of the annular body 12 .

[0041] Specifically, Figure 1 , Figure 2 As shown, the detection unit 60 includes a bearing ring body, a sensing part and an integrated circuit part (not shown, also called a chip part). The sensing part is at least partially fixed on the bearing ring body. For example, if the sensing part used in the illustrated scheme is a strain-type sensing part, then the elastic membrane body 61 that matches the strain gauge part 62 on the strain-type sensing part is fixed on the bearing ring body. After the other parts of the strain-type sensing part, the integrated circuit part, etc. are connected to the strain gauge part 62 through leads, they can be externally fixed on a peripheral structure such as the bottom plate 11. Therefore, when understanding the so-called detection unit 60 fixed in the ring body 12, it should be understood to include the situation where the detection unit 60 is fixed in the ring body 12 as a whole, and the situation where only part of the structure / component in the detection unit 60 is fixed in the ring body 12, etc.

[0042] An axial through hole is formed on the elastic membrane body 61. The column 23 and the stud section 24 on the transmission block 20 pass through the axial through hole on the elastic membrane body 61. At the same time, two disc-shaped parts 63 are mounted on the column 23, and the two disc-shaped parts 63 are correspondingly distributed on the membrane surfaces on both sides of the elastic membrane body 61. After a nut is arranged on the stud section 24, the elastic membrane body 61 can be fixedly clamped in the middle by the two disc-shaped parts 63, so that the elastic membrane body 61 and the transmission block 20 establish a fixed connection relationship. After the bearing ring body is fixedly clamped between the radial flange 121 and the spiral ring body 50, the so-called connection purpose of the detection unit 60 being fixedly arranged in the annular body 12 can be achieved. At that time, when the transmission block 20 moves relative to the bottom plate 11 along the axial direction (of the annular body 12), the transmission block 20 can cause the sensing part (i.e., the strain gauge part 62) on the detection unit 60 to change in physical quantity, and can feed back the sensing signal to the integrated circuit part. The strain gauge part 62 can be distributed around the axial through hole of the elastic membrane body 61 and extended in the radial direction.

[0043] The driving unit 70 matches the base 10 and can selectively drive the base 10 to move along the guide rail 113, and the moving direction of the base 10 is perpendicular to the extending direction of the axis of the roller 22. Figure 1 , Figure 2 As shown, the plane where the moving direction of the base 10 lies is relatively parallel to the plane where the axis extension direction of the roller 22 lies, that is, the extension direction of the guide rail 113 is perpendicular to the axis extension direction of the roller 22, and the plane formed by rotating the length extension direction of the guide rail 113 is parallel to the plane formed by rotating the axis extension direction of the roller 22.

[0044] In the above scheme, the annular body 12 is matched with the transmission block 20 in a one-to-one correspondence. The transmission block 20 is matched with the cylinder 30, the spring 40, the spiral ring body 50, and the detection unit 60 in a one-to-one correspondence, that is, the transmission block 20 is matched with the cylinder 30 in a one-to-one correspondence, the transmission block 20 is matched with the spring 40 in a one-to-one correspondence, the transmission block 20 is matched with the spiral ring body 50 in a one-to-one correspondence, and the transmission block 20 is matched with the detection unit 60 in a one-to-one correspondence.

[0045] like Figure 4 As shown, three areas arranged in a row along the length extension direction of the guide rail 113 are formed on the bottom plate 11, and two annular bodies 12 are arranged corresponding to the central area, and one annular body 12 is arranged corresponding to the other two areas. Figure 4A total of four annular bodies 12 are provided on the bottom plate 11 of the illustrated scheme, and the rollers 22 on the transmission blocks 20 that match the four annular bodies 12 are arranged in a distribution state as shown in the figure. Specifically, the rollers 22 on the four transmission blocks 20 that match the four annular bodies 12 are distributed in three columns (columns along the Y-axis direction and rows along the X-axis direction), so that a spacing interval 103 (a spacing formed in the Y-axis direction) is formed between the two rollers 22 in the middle area, and the two rollers 22 in the two side areas correspond to the extension direction of the spacing interval 103 (in the X-axis direction) and are respectively close to the two ends of the spacing interval 103 (the two ends in the Y-axis direction), so that the walking coverage surfaces of the four rollers 22 can overlap to form a long strip-shaped coverage area 102, that is, the extension area between the two dotted lines in the figure.

[0046] The four transmission monitoring units formed by the four groups of the cylinder 30, the spring 40, the spiral ring 50 and the detection unit 60 corresponding to the four transmission blocks 20 can respectively detect the conditions of the oxidation spots 101 generated at different positions on the surface of the lead plate 100, so that the alarm device 400 can synchronously detect multiple positions on a wider walking surface, thereby improving authenticity.

[0047] The upper parts of the four annular bodies 12 or the spiral ring bodies 50 disposed on the upper parts of the four annular bodies 12 can be connected as a whole through a frame or a plate, and then matched with the driving unit 70. Specifically, the motor assembly 71 of the driving unit 70 can be fixedly mounted on the frame or the plate, and the rack part 72 of the driving unit 70 can be fixed on the pressing frame 300.

[0048] When the driving unit 70 drives the base 10 or the bottom plate 11 to move along the guide rail 113 (also fixed on the pressing frame 300 and spaced relative to the surface of the lead plate 100), the walking coverage surfaces of the four rollers 22 can overlap to form a long strip-shaped extended coverage area 102, that is, the coverage area 102 can walk and extend in the X-axis direction and cover the width area between the dotted lines in the Y-axis direction. The XY plane shown in the figure is vertical, and the XZ plane is a plane.

[0049] exist Figure 4 In the embodiment shown, the width (dimension in the axial direction) of the roller 22 used can be relatively narrow, which can improve the sensitivity of the detection. At the same time, by combining multiple rollers 22, the defect of the relatively narrow walking coverage of the roller 22 is compensated, and a larger coverage width can be monitored, thereby improving the authenticity and reliability of the detection results, and being able to relatively more accurately reflect the formation of the oxidation spots 101 on the surface near the edge of the lead plate 100, making it closer to reality, and improving the authenticity of the monitoring results.

[0050] One driving unit 70 may be configured for one alarm device 400, and the driving units 70 respectively configured for a plurality of alarm devices 400 may be connected to one control unit.

[0051] like Figure 5 As shown, the driving unit 70 includes a motor assembly 71 and a rack portion 72. The motor assembly 71 is fixed to the free end face side of the annular body 12, and can be fixed (directly or indirectly) to the spiral ring body 50, and the gear at the output end of the motor assembly 71 can mesh with the rack portion 72. The extension direction of the rack portion 72 is consistent with the extension direction of the guide rail 113. On the surface of the lead plate 100, between the truss spacing of the pressing frame 300, close to the edge of the lead plate 100, a plurality of alarm devices 400 are distributed.

[0052] The detection unit 60 and the drive unit 70 are both connected to a control unit. The control unit can switch the motor assembly 71 between the on and off states, and between the forward and reverse states. After the motor assembly 71 is started, it can be meshed with the rack part 72 to make the base 10 slide back and forth along the guide rail 113.

[0053] The present invention also relates to a method for monitoring the oxidation degree of lead plates based on the above-mentioned alarm device 400 for monitoring the oxidation degree of lead plates, which includes the following process.

[0054] When the driving unit 70 drives the base 10 to reciprocate along the guide rail 113, the wheel surface of the roller 22 is kept in a state of pressing against the surface of the lead plate 100 and the roller 22 can rotate around its pivot. The spring 40 is provided to ensure that the roller 22 can maintain a state of pressing against the surface side of the lead plate 100. By providing the cylinder 30, the initial compression state of the spring 40 can be pre-adjusted, and the sensitivity of the transmission block 20 to respond to the oxidation degree (concave and convex state) of the surface of the lead plate 100 can be adjusted, that is, the transmission block 20 can better sense the slight concave and convex changes on the surface of the lead plate 100 and change the motion state, so that the detected frequency and amplitude signals are more real and sensitive.

[0055] In the process of continuous and alternating contact between the wheel surface of the roller 22 and the main surface of the lead plate 100 and the oxide spots 101 formed on the surface of the lead plate 100, the reciprocating motion state of the transmission block 20 relative to the base plate 11 can be frequently changed, causing the physical quantity of the sensing part (such as the strain gauge part 62) to change, and the sensing signal is fed back to the integrated circuit part in real time.

[0056] The integrated circuit unit analyzes and processes the received sensor signal to obtain the real-time frequency and / or real-time amplitude (including the fluctuation value and / or waveform of the frequency and amplitude) reflecting the movement status of the transmission block 20, and compares it with the preset frequency warning threshold (interval) and / or amplitude warning threshold (interval), and determines whether to issue a warning based on the comparison result. Therefore, the comparison of frequency and amplitude may include the comparison of certain discrete values, and may also include the comparison of the overlap degree of the waveforms.

[0057] The present invention also relates to a lead plate radiation protection door, which comprises any of the above-mentioned alarm devices 400 for monitoring the oxidation degree of the lead plate. The fixation of the lead plate 100 in the door body can refer to the prior art, such as Figure 2 As shown, the lead plate 100 is clamped between the supporting steel plate 200 and the pressing frame 300. Even if the lead plate 100 is fixed between the supporting steel plate 200 and the pressing frame 300 and can be maintained in a flat state, it will not be repeated.

[0058] In the solution of the present invention, the sensor part can also be a capacitive sensor part, and the two plates on the capacitive sensor part can follow the motion fluctuation state of the transmission block 20 and move synchronously; the medium carrier relatively placed between the two plates is fixed to the ring body 12. At this time, the capacitive sensor part is a medium-variable type. In other specific implementation schemes, it can also be designed as a pole pitch-variable type or an area-variable type.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be improved in many aspects without violating the overall concept, and those familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An alarm device (400) for monitoring the oxidation degree of lead plates, characterized in that: include: The base (10) comprises a bottom plate (11) and at least one annular body (12), wherein each annular body (12) is relatively fixed to the same side of the bottom plate (11) via a supporting structure; a guide rail (113) is arranged on the bottom plate (11) at a side thereof facing away from the annular body (12); A transmission block (20) having a middle portion matched with the bottom plate (11) and enabling the transmission block (20) to move relative to the bottom plate (11) along the axial direction of the annular body (12); a radial edge plate (21) and a roller (22) are pivotally arranged on one end surface side away from the annular body (12); the other end surface side extends toward the annular body (12); the axis of the roller (22) extends in a direction perpendicular to the axial direction of the annular body (12) and the wheel surface at least partially extends outward relative to the end surface of the transmission block (20); a gap is formed between the radial edge plate (21) and the bottom plate (11); A spring (40) is sleeved on the transmission block (20), one end of which contacts the bottom plate (11) and the other end of which contacts the radial edge plate (21), so that the spring (40) can exert an elastic force in the axial direction on the transmission block (20); The detection unit (60) is fixedly arranged in the annular body (12) and can match with the end surface side of the transmission block (20) extending toward the annular body (12); it comprises a sensing part and an integrated circuit part; when the transmission block (20) moves relative to the bottom plate (11), the sensing part on the detection unit (60) can cause a physical quantity change and can feed back a sensing signal to the integrated circuit part; A driving unit (70) matched with the base (10) and capable of driving the base (10) to move along the guide rail (113); The annular body (12) and the transmission block (20) are matched in a one-to-one correspondence; the transmission block (20) and the spring (40) and the detection unit (60) are matched in a one-to-one correspondence.

2. The alarm device (400) for monitoring the oxidation degree of lead plates according to claim 1, characterized in that: It also includes a cylinder (30) that matches the annular body (12) in a one-to-one correspondence; a threaded through hole (111) that matches the annular body (12) in a one-to-one correspondence is formed on the bottom plate (11), and the cylinder (30) and the threaded through hole (111) are matched via a threaded structure, so that the cylinder (30) can move axially relative to the bottom plate (11); The middle part of the transmission block (20) is sleeved in the cylinder cavity of the cylinder (30), so that the transmission block (20) can move axially relative to the cylinder (30); one end of the spring (40) facing the bottom plate (11) matches the end surface of the cylinder (30).

3. The alarm device (400) for monitoring the oxidation degree of lead plates according to claim 2, characterized in that: A countersunk hole (32) is formed on the end surface of the cylinder (30), so that the end of the spring (40) extends into the countersunk hole (32).

4. The alarm device (400) for monitoring the oxidation degree of lead plates according to claim 1, characterized in that: It also includes a spiral ring body (50) that matches the annular body (12) in a one-to-one correspondence; an axial flange (13) is formed on the free end surface of the annular body (12) so that the spiral ring body (50) and the axial flange (13) are fixedly matched; and a radial flange (121) is formed on the inner wall of the annular body (12); The detection unit (60) is fixedly clamped between the radial flange (121) and the spiral ring body (50).

5. The alarm device (400) for monitoring the oxidation degree of lead plates according to claim 4, characterized in that: The sensing part in the detection unit (60) is a strain sensing part; the detection unit (60) further comprises an outer ring body fixedly carrying the elastic membrane body (61), and the outer ring body is fixedly clamped between the radial flange (121) and the spiral ring body (50); the strain gauge part (62) on the strain sensing part is fixedly arranged on the elastic membrane body (61); The end face side of the transmission block (20) extending into the annular body (12) is fixedly connected to the middle position of the elastic membrane body (61), so that when the transmission block (20) moves relative to the base plate (11), the elastic membrane body (61) can be elastically deformed, and the strain gauge part (62) is deformed synchronously, causing the sensing signal of the strain type sensing part to change.

6. The alarm device (400) for monitoring the oxidation degree of lead plates according to claim 1, characterized in that: The sensing part in the detection unit (60) is a strain type sensing part; the detection unit (60) further comprises an elastic membrane body (61) fixedly arranged in the annular body (12), and the strain gauge part (62) on the strain type sensing part is fixedly arranged on the elastic membrane body (61); The end face side of the transmission block (20) extending into the annular body (12) is fixedly connected to the middle position of the elastic membrane body (61), so that when the transmission block (20) moves relative to the base plate (11), the elastic membrane body (61) can be elastically deformed, and the strain gauge part (62) is deformed synchronously, causing the sensing signal of the strain type sensing part to change.

7. The alarm device (400) for monitoring the oxidation degree of lead plates according to any one of claims 1 to 6, characterized in that: Three areas are formed on the bottom plate (11) and are distributed in a row along the extension direction of the guide rail (113), and two annular bodies (12) are arranged at the center area, and one annular body (12) is arranged at each of the two side areas; The rollers (22) on the four transmission blocks (20) corresponding to the four annular bodies (12) are arranged in three rows, so that a spacing interval (103) is formed between the two rollers (22) in the middle area, and the two rollers (22) in the two side areas are correspondingly arranged in the extension direction of the spacing interval (103) and respectively close to the two ends of the spacing interval (103), so that the walking coverage surfaces of the four rollers (22) can overlap to form a long strip-shaped coverage area (102).

8. A method for monitoring the oxidation degree of a lead plate based on the alarm device (400) for monitoring the oxidation degree of a lead plate according to any one of claims 1 to 6, characterized in that: When the driving unit (70) drives the base (10) to move along the guide rail (113), the wheel surface of the roller (22) can be kept in a state of being pressed against the surface of the lead plate (100) and the roller (22) can rotate around its pivot axis; During the process of continuous alternating contact between the wheel surface of the roller (22) and the main body surface of the lead plate (100) and / or the oxidized spots (101) formed on the surface of the lead plate (100), the transmission block (20) can be caused to reciprocate relative to the bottom plate (11), so that the sensing part undergoes a physical quantity change and a sensing signal is fed back to the integrated circuit part in real time; The integrated circuit unit analyzes and processes the received sensor signal to obtain a real-time frequency and / or real-time amplitude reflecting the motion status of the transmission block (20), and compares it with a preset frequency warning threshold and / or amplitude warning threshold, and determines whether to issue a warning based on the comparison result.

9. A lead plate radiation proof door, characterized in that: An alarm device (400) for monitoring the oxidation degree of a lead plate as claimed in any one of claims 1 to 6.

10. A lead plate radiation proof door, characterized in that: Contains the alarm device (400) for monitoring the oxidation degree of lead plates as described in claim 7.

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