Tubular trailer radioactive source emergency recovery tool

Abstract

The utility model discloses a tubular trailer radioactive source emergency recovery tool which comprises a lower shielding body, and a lower central groove used for containing a radioactive source is formed in the lower shielding body. The upper shielding body is installed on the lower shielding body, an upper center groove is formed in the bottom of the upper shielding body, and an accommodating cavity is formed by the upper center groove and the lower center groove; the left cover plate is arranged on the left sides of the lower shielding body and the upper shielding body and is used for sealing the lower central groove and the upper central groove; the right cover plate is arranged on the right sides of the lower shielding body and the upper shielding body and is used for sealing the lower central groove and the upper central groove; according to the radioactive source emergency recovery tool, the lower shielding body, the upper shielding body, the left cover plate, the right cover plate and the shielding body form an isolation container, the radioactive source can be shielded, direct irradiation of the radioactive source is avoided, and health and safety of personnel are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to radioactive source recovery technical field especially relates to a pipe trailer radioactive source emergency recovery tool. BACKGROUND

[0002] Radioactive sources are divided into I, II, III, IV and V classes, among which the class II radioactive sources are widely used in industrial flaw detection and medical treatment fields; the class II radioactive sources belong to high-risk sources; without protection, contacting such sources for several hours to several days can cause death of personnel; short-time contact can cause permanent damage to people. The radioactive source nuclides used in the industrial flaw detection and medical treatment fields are mainly Ir-192, Co-60, Se-75 and Cs-137; in order to prevent harm to people, the radioactive sources are stored in thick depleted uranium or lead shielding containers when not in use, and are connected with steel wire ropes when in use; the steel wire ropes connected with the radioactive sources are moved in the guide source tube to the specified position for irradiation by a source shaking disc, so that the radioactive image data of the specified position of the equipment or personnel is obtained. In the use process, due to the failure of the radioactive source container, the source shaking disc, the steel wire rope, the guide source tube and the source braid or the violation of the operation by personnel, the emergency situation that the radioactive source cannot be recovered to the shielding container may occur. At this time, the radioactive source needs to be manually operated by personnel to be sent back to the shielding container; the main steps of the usual emergency treatment are: accurately positioning the radioactive source, shielding the radioactive source, cutting the guide source tube, cutting the steel wire rope (the step does not need to be performed when the source braid falls off), taking out the radioactive source that cannot be recovered to the original container from the guide source tube with a clamp and moving it to another shielding container. Therefore, the above process needs personnel to contact the radioactive source at close range, which has the risk of over-dose irradiation and accidental irradiation of personnel and has an adverse effect on the health of the human body. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem and provides a pipe trailer radioactive source emergency recovery tool.

[0004] The utility model adopts the technical scheme in the technical problem: a pipe trailer radioactive source emergency recovery tool, comprising:

[0005] A lower shielding body is provided with a lower central groove for accommodating a radioactive source;

[0006] An upper shielding body is installed on the lower shielding body, and the upper shielding body is provided with an upper central groove at the bottom to form an accommodating cavity with the lower central groove;

[0007] A left cover plate is installed on the left side of the lower shielding body and the upper shielding body, and seals the lower central groove and the upper central groove;

[0008] A right cover plate is installed on the right side of the lower shielding body and the upper shielding body, and seals the lower central groove and the upper central groove; and

[0009] Shielding bodies are respectively arranged inside the lower shielding body, the upper shielding body, the left cover plate and the right cover plate to prevent the diffusion of radioactive sources.

[0010] Further, the left cover plate is preferably provided with a push rod mechanism for pushing and pulling on one side.

[0011] Further, the push rod mechanism preferably comprises a fixing frame and a push rod.

[0012] The fixing frame is fixedly or detachably installed on the left cover plate, and the push rod is rotatably installed on the fixing frame.

[0013] Further, the lower shielding body and the upper shielding body are preferably provided with a fixing mechanism for connecting the lower shielding body and the upper shielding body.

[0014] The fixing mechanism comprises fixing blocks respectively installed on the lower shielding body and the upper shielding body, and the fixing blocks are connected to each other by a connecting piece.

[0015] Further, the left cover plate is preferably provided with a first shielding block for axially shielding the lower central groove and the upper central groove.

[0016] Further, the right cover plate is preferably provided with a second shielding block inserted into the lower central groove and the upper central groove for shielding radioactive sources, and the right cover plate is provided with a third shielding block for axially shielding the lower central groove and the upper central groove.

[0017] Further, the lower shielding body preferably comprises a first proximal shielding body and a first distal shielding body which are integrally formed.

[0018] Part of the first proximal shielding body is fixedly or detachably installed in the first distal shielding body.

[0019] Further, the upper shielding body preferably comprises a second proximal shielding body and a second distal shielding body which are integrally formed.

[0020] Part of the second proximal shielding body is fixedly or detachably installed in the second distal shielding body.

[0021] Further, in the pipe trailer radioactive source emergency recovery tool, preferably the bottom of the lower shielding body is provided with wheels.

[0022] Further, in the pipe trailer radioactive source emergency recovery tool, preferably the upper shielding body is provided with a handle for carrying the upper shielding body.

[0023] The pipe trailer radioactive source emergency recovery tool has the following beneficial effects: the radioactive source emergency recovery tool is composed of a lower shielding body, an upper shielding body, a left cover plate, a right cover plate and a shielding body to form an isolation container, which can shield the radioactive source and avoid direct irradiation of the radioactive source, thereby ensuring the health and safety of personnel. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further described below in combination with the drawings and examples, and the drawings are as follows:

[0025] Figure 1 is the first perspective view of the pipe trailer radioactive source emergency recovery tool of the utility model;

[0026] Figure 2 is the structure diagram of the lower shielding body and the lower shielding body of the pipe trailer radioactive source emergency recovery tool of the utility model;

[0027] Figure 3 is the sectional view of the pipe trailer radioactive source emergency recovery tool of the utility model; Figure 2

[0028] Figure 4 is the structure diagram of the lower shielding body of the pipe trailer radioactive source emergency recovery tool of the utility model;

[0029] Figure 5 is the structure diagram of the upper shielding body of the pipe trailer radioactive source emergency recovery tool of the utility model.

[0030] Explanation of reference numerals in the schematic view:

[0031] 1, lower shielding body; 11, lower center groove; 2, upper shielding body; 21, upper center groove; 22, handle; 3, left cover plate; 31, first shielding block; 4, right cover plate; 41, second shielding block; 42, third shielding block; 5, shielding body; 6, push rod; 7, fixing frame; 8, fixing block; 9, wheel. DETAILED DESCRIPTION

[0032] ​In order to have a clearer understanding of the technical features, objects and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the technical scheme, and do not indicate that the indicated device or element must have a particular direction, therefore, it cannot be understood as a limitation on the present application.

[0033] It should be further pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the technical scheme, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the following description, specific details are presented such as specific system structures, techniques, etc. in order to thoroughly understand the embodiments of the present application, but those skilled in the art should understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed description of well-known systems, devices, circuits and methods is omitted to avoid unnecessary details that hinder the description of the present application.

[0035] The technical scheme adopted by the present application to solve its technical problems is: Figures 1 to 5The utility model discloses a kind of pipe trailer radioactive source emergency recovery tools, comprising: lower shielding body 1, lower shielding body 1 is opened with lower center groove 11 for accommodating radioactive source;Upper shielding body 2, upper shielding body 2 is installed on lower shielding body 1, and upper shielding body 2 bottom is opened with upper center groove 21 that lower center groove 11 forms accommodating cavity;Left cover plate 3, left cover plate 3 is installed on the left side of lower shielding body 1 and upper shielding body 2, and lower center groove 11 and upper center groove 21 are sealed;Right cover plate 4, right cover plate 4 is installed on the right side of lower shielding body 1 and upper shielding body 2, and lower center groove 11 and upper center groove 21 are sealed;And shielding body 5 for preventing radioactive source diffusion is respectively arranged in lower shielding body 1, upper shielding body 2, left cover plate 3 and right cover plate 4 interior.

[0036] In some embodiments, the present radioactive source emergency recovery tool adopts long pipe trailer type design, lead is injected in double-layer semicylindrical stainless steel shell, lead shielding thickness is adjusted according to the type and activity of radioactive source commonly used in industrial flaw detection and medical treatment, and appropriate weight is matched. Double semicylindrical shielding structure is used, so that the source guide pipe is placed into the lower center groove 11 of the lower shielding body 1, and then the upper shielding body 2 is fixed to the lower shielding body 1. Then left cover plate 3 and right cover plate 4 are respectively added to the left and right ends of the lower shielding body 1 and the upper shielding body 2, to form a complete shielding body, so as to avoid the diffusion of radioactive substances of the radioactive source from the emergency recovery tool.

[0037] Specifically, it mainly consists of lower shielding body 1, upper shielding body 2, left cover plate 3, right cover plate 4 and shielding body 5. Each component is connected into a whole by bolts, and the radiation level is reduced by lead shielding to avoid direct irradiation of the radioactive source and protect the health and safety of personnel.

[0038] The present radioactive source emergency recovery tool adopts cylindrical structure, and the symmetrical lower shielding body 1 and upper shielding body 2 are manufactured by casting double-layer stainless steel shell. The molten lead is poured into the gap between the double-layer shell, and after cooling, the lower shielding body 1 and the upper shielding body 2 are welded with stainless steel plate to be closed by welding. At the same time, a box-shaped cuboid is welded under the lower shielding body 1 to bear the weight of the whole cylinder. The thickness of the stainless steel semicylinder and the cuboid shell is 5mm.

[0039] By Figures 3 to 5 The left cover plate 3 is also provided with a push rod mechanism for push-pull on one side.

[0040] The push rod mechanism comprises a fixed frame 7 and a push rod 6. The fixed frame 7 is fixedly or detachably installed on the left cover plate 3, and the push rod 6 is rotatably installed on the fixed frame 7.

[0041] In some embodiments, the push rod 6 is made of stainless steel plate connected by welding, and is installed on the side away from the radioactive source. After the left cover plate 3 is installed, the left cover plate 3 and the push rod 6 are fixed by bolts. The push rod 6 is connected with the fixing frame 7 through a rotating shaft, and the fixing frame 7 is connected with the fixing block 8 of the lower shielding body 1, and has a 180° rotating function to facilitate transportation and use.

[0042] Alternatively, the push rod 6 is connected with the fixing frame 7 through a rotating shaft, and the fixing frame 7 is connected with the fixing block 8 of the left cover plate 3.

[0043] By Figures 1 to 2 It is given that the lower shielding body 1 and the upper shielding body 2 are provided with a fixing mechanism for connecting the lower shielding body 1 and the upper shielding body 2; the fixing mechanism includes fixing blocks 8 installed on the lower shielding body 1 and the upper shielding body 2 respectively, and the fixing blocks 8 are connected with each other through connecting pieces.

[0044] In some embodiments, the side surfaces of the lower shielding body 1 and the upper shielding body 2 are provided with fixing blocks 8 symmetrical to each other, the connecting pieces are bolts, and bolt holes are formed in the fixing blocks 8, and the bolts are installed in the bolt holes to connect and fix the lower shielding body 1 and the upper shielding body 2 together.

[0045] By Figures 3 to 5 It is given that the left cover plate 3 is further provided with a first shielding block 31 for axially shielding the lower center groove 11 and the upper center groove 21.

[0046] In some embodiments, the left cover plate 3 and the right cover plate 4 are made of stainless steel casting; the left cover plate 3 is installed on the side away from the radioactive source, and the thickness of the left cover plate 3 is ≥20mm, and the diameter matches the cylindrical structure of the lower shielding body 1 and the upper shielding body 2.

[0047] Alternatively, a first shielding block 31 with a diameter of 78mm and a thickness of ≥60mm is added outside to increase the shielding of the center source guide tube placement position.

[0048] The right cover plate 4 is further provided with a second shielding block 41 inserted into the lower center groove 11 and the upper center groove 21 to shield the radioactive source, and the right cover plate 4 is provided with a third shielding block 42 outside for axially shielding the lower center groove 11 and the upper center groove 21.

[0049] In some embodiments, the right cover plate 4 is installed near the side of the radioactive source, the thickness of the right cover plate 4 is 20mm, the diameter matches the cylindrical shielding body, a cylinder with a diameter of 78mm and a thickness of ≥60mm is added to the outside of the right cover plate 4, and a cylinder with a diameter of 38mm and a thickness of ≥40mm is added to the inside of the right cover plate 4, which facilitates the insertion of the right cover plate 4 into the lower center groove 11 and the upper center groove 21; the lead thickness of the proximal and distal semicylinders is ≥40mm / 60mm respectively, and adaptive modification can be made when other thicknesses of lead are used. This design does not affect the radial shielding effect during the movement of the inside radioactive source, and at the same time, by increasing the thickness of the end cap on the outside, the axial shielding effect is increased while the overall weight of the device is reduced as much as possible.

[0050] By Figures 4 to 5 It is given that the lower shielding body 1 comprises a first proximal shielding body and a first distal shielding body which are integrally formed respectively; a part of the first proximal shielding body is fixedly or detachably installed in the first distal shielding body.

[0051] The upper shielding body 2 comprises a second proximal shielding body and a second distal shielding body which are integrally formed respectively; a part of the second proximal shielding body is fixedly or detachably installed in the second distal shielding body.

[0052] In some embodiments, in order to reduce the weight of the shielding body, a modular design is adopted, and the cylindrical structure of the lower shielding body 1 and the upper shielding body 2 is divided into two segments with different diameters; the recommended lead shielding thickness of the lower shielding body 1 and the upper shielding body 2 near the side of the radioactive source is ≥60mm, and the length is ≥150mm; the recommended lead shielding thickness of the lower shielding body 1 and the upper shielding body 2 away from the side of the radioactive source is ≥40mm, and the length is ≥100mm; the upper shielding body 2 is composed of two detachable segments, the smaller-diameter semicylinder is installed first, and then the larger-diameter semicylinder is installed; in order to reduce the radiation leakage between the two cylindrical segments, the length of the smaller-diameter semicylinder is extended by ≥30mm into the larger-diameter semicylinder.

[0053] Alternatively, one end of the second proximal shielding body is installed in the second distal shielding body by 50mm.

[0054] The main technical parameters of the radioactive source emergency recovery tool are as follows:

[0055]

[0056] The bottom of the lower shielding body 1 is provided with wheels 9.

[0057] In some embodiments, four wheels are fixedly installed on the lower shielding body 1 by welding, and push rods 6 with different lengths are fixed on the left cover plate side for remote operation and transportation of the shielding device.

[0058] By Figures 1 to 3As shown, the upper shielding body 2 is provided with a handle 22 for carrying the upper shielding body 2.

[0059] In some embodiments, the handle 22 is installed on the top of the upper shielding body 2, and two handles are provided to facilitate the carrying of the upper shielding body 2 by the staff.

[0060] In general, the lower shielding body 1 is composed of five components, i.e. a double-layer stainless steel cylindrical shell, a lead shielding body, a stainless steel cover, a box-shaped cuboid, and a bolt fixing hole. The molten lead is poured into the semi-cylindrical double-layer stainless steel shell, and after cooling, the cover is welded. The recommended size of the thickness of the lead at the distal end is ≥40 mm, and the length is ≥100 mm. The recommended size of the thickness of the lead at the proximal end is ≥60 mm, and the length is ≥150 mm. The thickness of the stainless steel shell and the cover is 5 mm. The thickness of the stainless steel box-shaped cuboid is 5 mm, and the height and width are matched with the lower half of the stainless steel semi-cylindrical body. The diameter of the bolt fixing hole is 10 mm, and the thickness is 20 mm, which is connected with the semi-cylindrical body by welding. The radius of the lower center groove 11 is ≥20 mm to accommodate the source guide tube.

[0061] The upper shielding body 2 is composed of five components, i.e. a double-layer stainless steel cylindrical shell, a lead shielding body, a stainless steel cover, a handle, and a bolt fixing hole. The molten lead is poured into the semi-cylindrical double-layer stainless steel shell, and after cooling, the cover is welded. The recommended size of the thickness of the lead at the distal end is ≥40 mm, and the length is ≥150 mm. The recommended size of the thickness of the lead at the proximal end is ≥60 mm, and the length is ≥100 mm. The thickness of the stainless steel shell and the cover is 5 mm. The diameter of the handle is 10 mm, and the height and length are both 100 mm. The diameter of the bolt fixing hole is 10 mm, and the thickness is 20 mm, which is connected with the semi-cylindrical body by welding. The radius of the upper center groove 21 is ≥20 mm to accommodate the source guide tube.

[0062] The left cover plate 3 is composed of two components, i.e. a stainless steel end cover and a bolt fixing hole. The stainless steel entity is integrally formed, the diameter is matched with the cylindrical shielding device, and the thickness is ≥20 mm. To enhance the shielding effect, a cylindrical body with a diameter ≥78 mm and a thickness ≥60 mm is added to the outside to increase the shielding thickness and reduce the weight of the end cover.

[0063] The right cover plate 4 is composed of two components, i.e. a stainless steel end cover and a bolt fixing hole. The stainless steel entity is integrally formed, the diameter is matched with the cylindrical shielding device, and the thickness is ≥60 mm. To enhance the shielding effect, a protruding cylindrical body with a diameter matched with the diameter of the center hole and a thickness ≥40 mm is added to the inside, and a cylindrical body with a diameter ≥78 mm and a thickness ≥60 mm is added to the outside to increase the shielding thickness and reduce the weight of the end cover.

[0064] The push rod 6 is composed of two parts of double-layer push rod and bolt fixing hole. The push rod can match different lengths according to the site requirements, and the length of the push rod 6 should be greater than or equal to 2000 mm to reduce the radiation dose of personnel in subsequent transportation and disposal process; the bolt fixing hole should match the cylindrical radioactive source emergency tool.

[0065] The beneficial effects of the lower shielding body 1, the upper shielding body 2, the left cover plate 3, the right cover plate 4 and the shielding body 5 are that the radioactive source emergency recovery tool is composed of the lower shielding body 1, the upper shielding body 2, the left cover plate 3, the right cover plate 4 and the shielding body 5 to form an isolation container, which can shield the radioactive source and avoid direct irradiation of the radioactive source to ensure the health and safety of personnel.

[0066] All steps of the operation of the tool should be monitored synchronously with the change of the radiation dose rate level, and the main steps are as follows: the first step is to push the radioactive source to the top end of the source guide pipe through the steel wire in the source shaking disc to make it as far away from the emergency recovery personnel as possible.

[0067] The second step is to place the lower shielding body 1 near the radioactive source and the position with a shielding wall or other shielding with sufficient thickness.

[0068] The third step is to drag the cable connected with the source shaking disc and the radioactive source machine to move the radioactive source machine to a suitable position to place the lower shielding body 1.

[0069] The fourth step is to connect the fixing frame 7 with the lower shielding body 1 through bolts and push it to the position of the source guide pipe at the outlet of the radioactive source machine.

[0070] The fifth step is to put the source guide pipe at the outlet position of the radioactive source machine into the lower center groove 11 of the lower shielding body 1.

[0071] The sixth step is to cover the upper shielding body 2 to the lower shielding body 1.

[0072] The seventh step is to slowly move the radioactive source machine and the source guide pipe by dragging the cable connected with the source shaking disc and the radioactive source machine, so that the radioactive source slowly moves into the radioactive source emergency tool. When the radioactive source machine can be manually operated behind the shielding wall, the dragging of the source shaking disc can be changed to manual movement of the radioactive source machine, and the change of the radiation dose rate level is monitored synchronously.

[0073] The eighth step is to judge whether the radioactive source has entered the emergency recovery tool through the long rod radiation monitor. When the radiation level at the site has been obviously reduced and the personnel entering condition is met, stop dragging the source guide pipe, install the right cover plate 4 near the one end of the radioactive source, and the emergency recovery personnel should stand in the radial direction to avoid the circular hole in the center of the radioactive source container.

[0074] The ninth step is to cut off the source guide pipe at the position of the emergency recovery container away from the radioactive source, and install the left cover plate 3.

[0075] Step 10: Fix the lower shielding body 1, the upper shielding body 2, the left cover plate 3 and the right cover plate 4 and the push rod 6 to form a complete shielding body.

[0076] Step 11: Take the dropped radioactive source back to the radioactive source storage and end the emergency treatment.

[0077] It can be understood that the above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A tube trailer radioactive source emergency recovery tool, characterized in that, The utility model relates to a shielding body for radioactive source, which comprises: a lower shielding body (1) with a lower central slot (11) for accommodating a radioactive source; an upper shielding body (2) mounted on the lower shielding body (1), the upper shielding body (2) having an upper central slot (21) at the bottom for forming a cavity with the lower central slot (11); a left cover plate (3) mounted on the left side of the lower shielding body (1) and the upper shielding body (2) and sealing the lower central slot (11) and the upper central slot (21); a right cover plate (4) mounted on the right side of the lower shielding body (1) and the upper shielding body (2) and sealing the lower central slot (11) and the upper central slot (21); and a shielding body (5) arranged in the lower shielding body (1), the upper shielding body (2), the left cover plate (3) and the right cover plate (4) respectively for preventing the diffusion of the radioactive source.

2. The tube trailer radioactive source emergency recovery tool according to claim 1, characterized in that, A push rod mechanism for pushing and pulling is mounted on one side of the left cover plate (3).

3. The tube trailer radioactive source emergency recovery tool of claim 2, wherein, The push rod mechanism comprises a fixed frame (7) and a push rod (6); the fixed frame (7) is fixedly or detachably mounted on the left cover plate (3), and the push rod (6) is rotatably mounted on the fixed frame (7).

4. The tube trailer radioactive source emergency recovery tool of claim 1, wherein, A fixing mechanism for connecting the lower shielding body (1) and the upper shielding body (2) is mounted between the lower shielding body (1) and the upper shielding body (2). The fixing mechanism comprises fixing blocks (8) mounted on the lower shielding body (1) and the upper shielding body (2) respectively, and the fixing blocks (8) are connected to each other by connecting members.

5. The tube trailer radioactive source emergency recovery tool of claim 1, wherein, A first shielding block (31) for shielding the lower central slot (11) and the upper central slot (21) axially is mounted on the left cover plate (3).

6. The tube trailer radioactive source emergency recovery tool of claim 1, wherein, A second shielding block (41) for shielding the radioactive source by being inserted into the lower central slot (11) and the upper central slot (21) is mounted on the right cover plate (4), and a third shielding block (42) for shielding the lower central slot (11) and the upper central slot (21) axially is mounted on the outside of the right cover plate (4).

7. The tube trailer radioactive source emergency recovery tool of claim 1, wherein, The lower shielding body (1) comprises a first proximal shielding body and a first distal shielding body which are integrally formed; a part of the first proximal shielding body is fixedly or detachably mounted in the first distal shielding body.

8. The tube trailer radioactive source emergency recovery tool of claim 1, wherein, The upper shielding body (2) comprises a second proximal shielding body and a second distal shielding body which are integrally formed; a part of the second proximal shielding body is fixedly or detachably mounted in the second distal shielding body.

9. The tube trailer radioactive source emergency recovery tool of claim 1, wherein, Wheels (9) are mounted on the bottom of the lower shielding body (1).

10. The tube trailer radioactive source emergency recovery tool of claim 1, wherein, Handles (22) for carrying the upper shielding body (2) are mounted on the upper shielding body (2).

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