CN113321119A - Transportation protection device and radioactive product transportation system - Google Patents
Transportation protection device and radioactive product transportation system Download PDFInfo
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- CN113321119A CN113321119A CN202110630387.9A CN202110630387A CN113321119A CN 113321119 A CN113321119 A CN 113321119A CN 202110630387 A CN202110630387 A CN 202110630387A CN 113321119 A CN113321119 A CN 113321119A
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- Prior art keywords
- lifting
- transportation
- bushing
- protection device
- trunnion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/68—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles mounted on, or guided by, jibs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a transportation protection device and a transportation system of radioactive articles, wherein the transportation protection device comprises: the transportation component is provided with a lifting hole, the lifting hole is used for penetrating through a lifting trunnion of a transported piece, and the bottom of the lifting hole is provided with a concave structure; a bushing mounted within the concave structure, an upper surface of the bushing being in contact with the lift trunnion; and the stop component is inserted between the inner wall of the lifting hole and the lifting trunnion and used for limiting the lifting trunnion. The device can ensure the safety of transportation operation, can prolong the service life of the container and is convenient for the maintenance and the replacement of the lining.
Description
Technical Field
The invention belongs to the field of nuclear industry, and particularly relates to a transportation protection device and a radioactive product transportation system.
Background
The radioactive product transport container is a key device for the off-stack transport and transportation of radioactive products such as new and spent fuel assemblies. In the process of transportation and transfer, the container needs to be lifted by a lifting appliance and then operated. In order to facilitate the operation of transporting the container, one pair or two pairs of lifting trunnions are symmetrically arranged at the upper end of the container, and a crane and a special lifting appliance are used for lifting one pair of container trunnions for lifting or turning.
In practice, however, it has been found that the connection of the spreader boom to the lifting trunnion of the container has the following disadvantages:
1) as radioactive articles are contained in the container, once the risk of falling off is high, and the equipment in the prior art lacks a limiting device, the lifting trunnion has potential danger of falling off from the lifting hole of the suspension arm in the process of lifting and turning the container, so that the operation safety of the container is influenced;
2) direct contact between the suspension arm and the lifting trunnion is usually not allowed, so that the surface damage of the lifting trunnion is avoided, the service life of the container trunnion is reduced, and the gasket arranged in the current foreign related lifting appliance is not reasonable in structure, so that the gasket is easy to deform or damage and difficult to replace, and the use and maintenance of the lifting appliance are influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a transportation protection device with high operation safety and a transportation system for radioactive products aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a transportation protection device, comprising:
the transportation component is provided with a lifting hole, the lifting hole is used for penetrating through a lifting trunnion of a transported piece, and the bottom of the lifting hole is provided with a concave structure;
a bushing mounted within the concave structure, an upper surface of the bushing being in contact with the lift trunnion;
and the stop component is inserted between the inner wall of the lifting hole and the lifting trunnion and used for limiting the lifting trunnion.
Preferably, a first step is arranged in the concave structure, and the first step is a concave step;
the bottom of the bushing is of a convex structure, a second step is arranged on the convex structure, the second step is a convex step, and the second step is clamped with the first step;
the number of the first steps is two, the two first steps are symmetrically arranged at two ends of the concave structure, and correspondingly, the number of the second steps is also two.
Preferably, the lifting hole is a circular hole, the concave structure and the convex structure are both arc-shaped structures, and the upper surface of the bushing is an arc surface.
Preferably, the circle center of the upper half part of the lifting hole coincides with the projection of the circle center of the concave structure on the horizontal plane, and the diameter of the upper half part of the lifting hole is larger than that of the concave structure;
the upper surface of the bushing and the lower surface of the convex structure and the concave structure are concentric arcs.
Preferably, the upper surface of the bushing protrudes out of the concave structure, the outer sides of the two second steps are respectively provided with an extending part, the upper surface of each extending part is a transition inclined plane, the transition inclined planes incline outwards until being connected with the lifting hole, and the lower surfaces of the extending parts are arc-shaped and concentric arcs with the upper half part of the lifting hole.
Preferably, the bushing is fixed in the concave structure by a second bolt, a check washer and a pin, the second bolt and the pin being sunk in the bushing.
Preferably, the bushing is made of aluminum bronze.
Preferably, the stop assembly is mounted on the transport component;
the lower surface of the stop component is contacted with the lifting trunnion to play a first limiting role on the lifting trunnion;
the front end of the lower part of the stopping component is provided with an inwards sunken third step, and the third step is matched with the convex ring of the lifting trunnion to play a second limiting role.
Preferably, the stop assembly comprises a first stop and a second stop;
the first stop is L-shaped and comprises a first vertical plate and a first transverse block, the lower surface of the stop component and the third step are both arranged on the first transverse block, the first vertical plate is provided with an opening, and the bottom of the opening is communicated with the first transverse block;
the second stop block is L-shaped and comprises a second vertical plate and a second transverse block, and the second transverse block is inserted into the opening on the first vertical plate and is placed on the first transverse block;
one side of the first vertical plate is attached to the side of the transportation part, the other side of the first vertical plate is attached to the second vertical plate, and the first vertical plate and the second vertical plate are fixed to the side of the transportation part through bolts.
The invention also provides a radioactive product transportation system, which comprises a lifting appliance, wherein the lifting appliance comprises the transportation protection device;
the transportation part in the transportation protection device is a suspension arm of a lifting appliance.
According to the transportation protection device and the transportation system for radioactive products, the bushings are added into the lifting holes, and the stop assemblies are added to limit the lifting trunnions, so that the problem that the lifting trunnions are easy to fall out of the lifting holes in the operation processes of overturning and the like is solved, and the safety of transportation operation is improved.
Drawings
FIG. 1 is a schematic structural diagram of a spreader connection protection device in an embodiment of the invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3a is a partial schematic view of FIG. 1 (showing only the connection of the boom to the liner);
FIG. 3b is a top view of FIG. 3 a;
FIG. 4a is a schematic view of the boom (partially cut away);
FIG. 4b is a cross-sectional view of FIG. 4 a;
FIG. 5a is a front view of the first stop;
FIG. 5b is a cross-sectional view C-C of FIG. 5 a;
FIG. 6a is a front view of the second stop;
FIG. 6b is a cross-sectional view D-D of FIG. 6 a;
FIG. 7a is a vertical cut away schematic view of the bushing;
fig. 7b is a schematic top view of the bushing.
In the figure: 1-a suspension arm; 2-a stop assembly; 3-a bushing; 4-a first bolt; 5-lifting the trunnion; 6-a second bolt; 7-a lock washer; 8-pin; 11-a lifting hole; 12-inner wall of lifting hole; 13-a concave structure; 14-a first step; 21-a first stop; 211-a first riser; 212-a first cross-piece; 213-upper surface of first cross piece; 214-a third step; 215-lower surface of first cross piece; 216-square hole; 22-a second stop; 221-a second riser; 222-a second cross-piece; 223-an upper surface of the second cross piece; 224-the lower surface of the second cross-piece; 31-the upper surface of the bushing; 32-a first extension; 33-convex configuration; 34-a second step; 35-a second extension; 36-transition slope.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
As shown in fig. 1-7b, the present invention provides a transportation protection device comprising:
the transportation component is provided with a lifting hole 11, the lifting hole 11 is used for penetrating through a lifting trunnion 5 of a transported piece, and the bottom of the lifting hole 11 is provided with a concave structure 13;
a bushing 3 mounted in said concave structure 13, the upper surface 31 of said bushing being in contact with said lifting trunnion 5;
the stop assembly 2 is inserted between the inner wall 12 of the lifting hole and the lifting trunnion 5 and used for limiting the lifting trunnion 5.
In the embodiment shown in the drawings, the transportation component is specifically the suspension arm 1, the suspension arm 1 is the part of the lifting appliance connected with the suspension part, it can be understood that the transportation component can also be expanded to other forms for connecting the transported part for the transportation protection device of the invention, and for the embodiment shown in the drawings, at least one lifting hole 11 penetrating through the front surface and the rear surface of the suspension arm 1 is required to be arranged on the suspension arm 1; in one specific embodiment, the lifting holes 11 are circular holes, but any polygonal hole may be used; at the bottom of lifting hole 11 partly formation concave structure 13 of digging out downwards, installation bush 3 in concave structure 13, backstop subassembly 2 is used for realizing spacingly to lifting trunnion 5, can prevent to lift trunnion 5 and deviate from in lifting hole 11, also can further restrict lifting trunnion 5 simultaneously and drive bush 3 and slide, and backstop subassembly 2's specific structure can not do the restriction here, as long as it can play limiting displacement can.
Preferably, a first step 14 is arranged in the concave structure 13, and the first step 14 is a concave step;
the bottom of the bushing 3 is a convex structure 33, a second step 34 is arranged on the convex structure 33, the second step 34 is a convex step, and the second step 34 is clamped with the first step 14;
the number of the first steps 14 is two, two first steps 14 are symmetrically arranged at two ends of the concave structure 13, and correspondingly, the number of the second steps 34 is also two.
Specifically, as shown in fig. 3a, 3b, 4a, 4b, 7a, and 7b, the shape of the bushing 3 corresponds to the concave structure 13 (i.e., the bottom of the bushing is a convex structure 33), the bushing is just placed in the concave structure 13, the concave structure 13 is provided with the first step 14, the bottom of the bushing 3 is provided with the corresponding second step 34, the first step 14 and the second step 34 are engaged, and when the bushing 3 has a sliding tendency after being stressed, the steps block the relative sliding tendency, so that the bushing 3 is limited; in one specific embodiment, the first step 14 and the second step 34 are disposed at two ends of the concave structure 13 and the convex structure 33, and the object of the present invention can be achieved as long as the steps are correspondingly engaged with each other, and the specific disposition position is not limited; in one specific embodiment, the bushing 3 is connected in the concave structure 13 by bolts and pins, and actually, only a fixed connection is needed to be realized between the two, and the specific connection form is not limited, the first step 14 is directly formed by forming a small section of structure with the lower part thereof being concave towards the left and right sides at the contact position of the concave structure 13 and the inner wall 12 of the lifting hole 11, and correspondingly, the second step 34 is formed by forming a structure with the lower part of the step wall being convex towards the outside at the left and right ends of the convex structure 33, so that when the convex structure 33 is installed in the concave structure 13, the first step 14 and the second step 34 are engaged.
Preferably, the lifting hole 11 is a circular hole, the concave structure 13 and the convex structure 33 are both circular arc structures, and the upper surface 31 of the bushing 3 is a circular arc surface.
Specifically, aiming at the actual situation that the lifting trunnion 5 is mostly of a cylindrical structure, the lifting hole 11 is a circular hole, the upper surface 31 of the bushing 3 is also an arc surface, the arc surface is directly contacted with the lower half part of the lifting trunnion 5 to play a main bearing role, and other corresponding parts are all arranged in an arc shape, so that the part processing is facilitated, and the stress after the installation is facilitated.
Preferably, the center of the circle of the upper half of the lifting hole 11 coincides with the projection of the center of the circle of the concave structure 13 on the horizontal plane, and the diameter of the upper half of the lifting hole 11 is larger than that of the concave structure 13;
the upper surface 31 of the bushing and the lower surface of the convex structure 33 are both concentric arcs of a circle with the concave structure 13.
Specifically, as shown in fig. 3a, 3b, 4a, 4b, 7a, and 7b, the center of the circle of the upper half of the lifting hole 11 is 01, the center of the circle of the concave structure 13 is 02, the center of the circle 01 coincides with the horizontal projection of the center of the circle 02, the height of the center of the circle 01 in the vertical direction is higher than the center of the circle 02, and the height of the recess of the concave structure 13 is greater than the height of the recess of the concave structure 13, that is, the diameter of the upper half of the lifting hole 11 is greater than the diameter of the concave structure 13, and the shape and the size of the bushing 3 both correspond to the concave structure 13, so that when the lifting trunnion 5 is placed in the lifting hole 11, the bushing only contacts with the upper surface 31 of the bushing 3, and avoids directly contacting with the boom 1.
Optionally, as shown in fig. 7a, the upper surface 31 of the bushing protrudes out of the concave structure 13, the outer sides of the two second steps 34 are respectively provided with an extending portion (32, 35), the upper surface of the extending portion (32, 35) is a transition inclined surface 36, the transition inclined surface 36 inclines outward until being connected with the lifting hole 11, and the lower surface of the extending portion (32, 35) is also arc-shaped and is concentric with the upper half of the lifting hole 11.
Specifically, as shown in fig. 3a, 3b and 7a, 7b, after the second steps 34 are provided on both sides of the liner 3, the liner continues to extend outward for a distance to form the first extension 32 and the second extension 35, the lower surfaces of the first extension 32 and the second extension 35 are in contact with the inner wall 12 of the lifting hole, so that the first extension 32 and the second extension are concentrically arranged, and since the diameter of the upper surface 31 of the liner 3 is smaller than the diameter of the upper half of the lifting hole 11, the upper surface of the extension is provided with a transition inclined surface 36 for facilitating the penetration of the lifting trunnion 5, and the outer side is transitioned to be in contact with the inner wall 12 of the lifting hole.
Preferably, the bushing 3 is fixed in the concave structure 13 by means of a second bolt 6, a locking washer 7 and a pin 8, the second bolt 6 and the pin 8 being sunk in the bushing 3.
Specifically, as shown in fig. 3a, 3b, 4a, 4b, 7a, and 7b, two pin holes are symmetrically formed on the left and right sides of the concave structure 13, four bolt holes are symmetrically formed on the front and back sides of the two pin holes, correspondingly, the bushing 3 is provided with a pin through hole and a bolt countersunk hole, after the pin 8 is inserted into the pin through hole, the portion of the pin 8 extending out of the convex structure 33 is inserted into the pin hole in the concave structure 13, and then the second bolt 6 is inserted into the anti-loose washer 7 and screwed into the bolt hole through the countersunk hole, and the upper portions of the pin 8 and the second bolt 6 sink below the upper surface 31 of the bushing without contacting the lifting trunnion 5, so that the number and position of the pin 8 and the second bolt 6 can be changed, and accordingly, the number and position of the holes can be changed.
Preferably, the bushing 3 is made of aluminum bronze.
Specifically, the main function of the bushing 3 is to prevent the suspension arm 1 (the suspension arm 1 is heavy and needs to be made of high-hardness material) made of an excessively hard material from directly contacting the lifting trunnion 5 to cause abrasion of the lifting trunnion 5, so that the bushing is made of a softer material such as aluminum bronze.
Preferably, the stop assembly 2 is mounted on the transport element;
the lower surface of the stop component 2 is contacted with the lifting trunnion 5 to play a first limiting role;
the front end of the lower part of the stop component 2 is provided with an inwardly concave third step 214, and the third step 214 is matched with the convex ring of the lifting trunnion 5 to perform a second limiting function on the third step 214.
Specifically, as shown in fig. 1, 2, 5a, and 5b, since the lifting trunnion 5 is generally cylindrical, the lower surface of the stopping assembly 2 is configured to be circular arc, the circular arc is consistent with the circular arc of the wall of the lifting trunnion 5 and is pressed and attached to the wall of the lifting trunnion 5, and the lifting trunnion 5 is circumferentially limited (i.e., does not rotate), the outermost end of the lifting trunnion 5 is generally provided with a convex ring, the front end of the lower portion of the stopping assembly 2 is provided with an inwardly recessed third step 214, and the third step 214 is installed to correspond to the inner side of the convex ring, so that the axial limiting function (i.e., cannot move back and forth along the axis) is achieved.
Preferably, the stop assembly 2 comprises a first stop 21 and a second stop 22;
the first stopper 21 is L-shaped and comprises a first vertical plate 211 and a first transverse block 212, the lower surface of the stopper component 2 and the third step 214 are both arranged on the first transverse block 212, the first vertical plate 211 is provided with an opening, and the bottom of the opening is communicated with the first transverse block 212;
the second stopper 22 is L-shaped and comprises a second vertical plate 221 and a second transverse block 222, the second transverse block 222 is inserted into the opening of the first vertical plate 211 and is placed on the first transverse block 212;
one side of the first vertical plate 211 is attached to the side of the transportation component, the other side of the first vertical plate 211 is attached to the second vertical plate 221, and the first vertical plate 211 and the second vertical plate 212 are fixed to the side of the transportation component through bolts.
Specifically, as shown in fig. 1, 2, 5a, 5b, 6a, and 6b, the first stopper 21 includes a first vertical plate 211 and a first horizontal block 212 welded to the bottom of the first vertical plate 211 and extending to one side, an upper surface 213 of the first horizontal block may be a plane, a lower surface 215 of the first horizontal block is a concave arc surface corresponding to the lifting trunnion 5, the first horizontal block 212 is inserted into the lifting hole 11 such that the lower surface 215 is attached to the wall of the lifting trunnion 5, the first vertical plate 211 is placed outside the lifting hole 11 and is mounted on the boom 1 by a first bolt 4, a third step 214 is provided outside the first horizontal block 212 corresponding to the lower side of the first vertical plate 211, the lower surface 215 of the first horizontal block is mounted lower than the collar of the lifting trunnion 5, such that the third step 214 functions to limit the collar from coming out of the lifting hole 11, in order to further clamp the first stopper 21, a hole 216 is provided below the mounting holes of the first stopper 21 and the boom 1, adding a second stopping block 22, wherein the second stopping block 22 also comprises a second vertical plate 221 and a second transverse block 222 which are vertically welded together, the second transverse block 222 is inserted into the square hole 216 of the first stopping block 21 until the second vertical plate 221 clings to the first vertical plate 211, the lower surface 224 of the second transverse block corresponds to the upper surface 213 of the first transverse block and is in pressing contact with the upper surface, the upper surface 223 of the second transverse block is a raised arc surface corresponding to the inner wall 12 of the lifting hole, the first stopping block 21 and the second stopping block 22 are attached and pressed after being inserted, and the first stopping block 21 and the second stopping block 22 are connected to the suspension arm 1 through the first bolt 4, so that the lifting trunnion 5 is well limited.
The invention also provides a radioactive product transportation system, which comprises a lifting appliance, wherein the lifting appliance comprises the transportation protection device;
the transportation component in the transportation protection device is a suspension arm 1 of a lifting appliance.
Specifically, the transported object is a radioactive product transportation container, one or two pairs of lifting trunnions 5 are symmetrically arranged at the upper end of the container, and a crane and a special lifting appliance are used for lifting the pair of container lifting trunnions 5 for hoisting or overturning, that is, the container is lifted after the pair of transportation protection devices are respectively connected with the pair of lifting trunnions 5 from two sides.
The working principle of the transportation protection device and the transportation system for radioactive articles is as follows:
1) before a container is hoisted or turned over by using a lifting appliance, firstly, the deformation condition of the bushing 3 is checked, the new bushing 3, the second bolt 6, the anti-loose washer 7 and the pin 8 are replaced according to the requirement, and the bushing 3 is installed in place; then, a crane and a lifting appliance are used for meshing the lifting hole 11 of the suspension arm 1 with the container lifting trunnion 5, and the connection is correct; finally, the stop component 2 is installed, the first stop 21 is installed, then the second cross block 222 of the second stop 22 passes through the square hole of the first vertical plate 211 of the first stop 21, the second vertical plate 221 of the second stop 22 presses the first vertical plate 211 of the first stop 21, and the first stop 21 and the second stop 22 are fixed on the suspension arm 1 by using the first bolt 4;
2) after the container operation is finished, firstly removing the first bolt 4 connected with the stop component 2, and sequentially removing the second stop 22 and the first stop 21; then slowly moving the suspension arm 1, and moving the container lifting trunnion 5 out of the lifting hole 11 of the suspension arm 1; finally, the deformation condition of the bush 3 is checked, the new bush 3, the second bolt 6, the check washer 7 and the pin 8 are replaced according to the requirement, and the bush 3 is installed in place.
According to the transportation protection device and the transportation system for radioactive products, the bushings are added into the lifting holes, and the stop assemblies are added to limit the lifting trunnions, so that the problem that the lifting trunnions are easy to fall out of the lifting holes in the operation processes of turning and the like is solved, and the safety of transportation operation is improved; the corresponding second step and the corresponding first step are arranged on the bushing and the lifting hole, and are mutually clamped, so that the bushing is prevented from being driven to slide by friction force between the lifting trunnion and the bushing in the transportation process, particularly in the process of turning over operation after the container is lifted, the bolt and the pin which are used for connecting the bushing to the lifting hole of the suspension arm are deformed or broken by shearing force, the problem that the bushing is damaged and difficult to replace is caused, and the lifting trunnion is prevented from being damaged by friction; the stop assembly is provided with an arc surface which is attached to the lifting trunnion, and a third step is arranged to be matched with a convex ring of the lifting trunnion, so that the lifting trunnion is axially and circumferentially limited; the device and the system are suitable for the transportation operation of the radioactive product container, can ensure the safety of the transportation operation, prolong the service life of the container and facilitate the maintenance and the replacement of the lining.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A transportation protection device, comprising:
the transportation component is provided with a lifting hole, the lifting hole is used for penetrating through a lifting trunnion of a transported piece, and the bottom of the lifting hole is provided with a concave structure;
a bushing mounted within the concave structure, an upper surface of the bushing being in contact with the lift trunnion;
and the stop component is inserted between the inner wall of the lifting hole and the lifting trunnion and used for limiting the lifting trunnion.
2. The transportation protection device of claim 1, wherein a first step is disposed within the concave structure, the first step being a concave step;
the bottom of the bushing is of a convex structure, a second step is arranged on the convex structure, the second step is a convex step, and the second step is clamped with the first step;
the number of the first steps is two, the two first steps are symmetrically arranged at two ends of the concave structure, and correspondingly, the number of the second steps is also two.
3. The transportation protection device of claim 2, wherein the lifting holes are circular holes, the concave structures and the convex structures are circular arc structures, and the upper surface of the bushing is a circular arc surface.
4. The transportation protection device of claim 3, wherein a center of the upper half of the lifting hole coincides with a projection of a center of the concave structure on a horizontal plane, and a diameter of the upper half of the lifting hole is larger than a diameter of the concave structure;
the upper surface of the bushing and the lower surface of the convex structure and the concave structure are concentric arcs.
5. The transportation protection device of claim 4, wherein the upper surface of the bushing protrudes from the concave structure, the outer sides of the two second steps are respectively provided with an extension portion, the upper surface of each extension portion is a transition inclined surface, the transition inclined surfaces incline outwards until being connected with the lifting hole, and the lower surface of each extension portion is also in a circular arc shape and is concentric with the upper half part of the lifting hole.
6. The transportation protection device of any one of claims 1-5, wherein said bushing is secured within said female structure by a second bolt, a locking washer, and a pin, said second bolt and said pin being sunk into said bushing.
7. The transportation protection device of any one of claims 1-5, wherein said bushings are made of aluminum bronze.
8. The transportation protection device of any one of claims 1-5, wherein said stop assembly is mounted on said transport component,
the lower surface of the stop component is contacted with the lifting trunnion to play a first limit role for the lifting trunnion,
the front end of the lower part of the stopping component is provided with an inwards sunken third step, and the third step is matched with the convex ring of the lifting trunnion to play a second limiting role.
9. The transportation protection device of claim 8, wherein the stop assembly comprises a first stop and a second stop,
the first backstop is L-shaped and comprises a first vertical plate and a first transverse block, the lower surface of the backstop component and the third step are both arranged on the first transverse block, the first vertical plate is provided with an opening, the bottom of the opening is communicated with the first transverse block,
the second stop block is L-shaped and comprises a second vertical plate and a second transverse block, the second transverse block is inserted into the opening on the first vertical plate and is placed on the first transverse block,
one side of the first vertical plate is attached to the side of the transportation part, the other side of the first vertical plate is attached to the second vertical plate, and the first vertical plate and the second vertical plate are fixed to the side of the transportation part through bolts.
10. A transport system for radioactive articles, comprising a spreader, characterized in that it comprises a transport protection device according to any one of claims 1 to 9,
the transportation part in the transportation protection device is a suspension arm of a lifting appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110630387.9A CN113321119B (en) | 2021-06-07 | 2021-06-07 | Transportation protection device and radioactive product transportation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110630387.9A CN113321119B (en) | 2021-06-07 | 2021-06-07 | Transportation protection device and radioactive product transportation system |
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| CN113321119A true CN113321119A (en) | 2021-08-31 |
| CN113321119B CN113321119B (en) | 2022-11-22 |
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| CN (1) | CN113321119B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2235671C1 (en) * | 2003-02-05 | 2004-09-10 | Федеральное государственное унитарное предприятие "ОКБ Вымпел" | Tie-rod with locking device |
| CN102728992A (en) * | 2012-07-12 | 2012-10-17 | 莱芜钢铁集团有限公司 | Repairing method for trunnion of converter |
| CN203740891U (en) * | 2014-02-28 | 2014-07-30 | 舞阳钢铁有限责任公司 | Protective device for lifting steel ladle |
| CN106368252A (en) * | 2016-10-20 | 2017-02-01 | 中联重科股份有限公司渭南分公司 | Connecting structure for supporting rod and lug shaft and bulldozer |
| CN107972219A (en) * | 2017-11-26 | 2018-05-01 | 成都宁翔机械制造有限责任公司 | A kind of gudgeon mounting structure of plasticator |
-
2021
- 2021-06-07 CN CN202110630387.9A patent/CN113321119B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2235671C1 (en) * | 2003-02-05 | 2004-09-10 | Федеральное государственное унитарное предприятие "ОКБ Вымпел" | Tie-rod with locking device |
| CN102728992A (en) * | 2012-07-12 | 2012-10-17 | 莱芜钢铁集团有限公司 | Repairing method for trunnion of converter |
| CN203740891U (en) * | 2014-02-28 | 2014-07-30 | 舞阳钢铁有限责任公司 | Protective device for lifting steel ladle |
| CN106368252A (en) * | 2016-10-20 | 2017-02-01 | 中联重科股份有限公司渭南分公司 | Connecting structure for supporting rod and lug shaft and bulldozer |
| CN107972219A (en) * | 2017-11-26 | 2018-05-01 | 成都宁翔机械制造有限责任公司 | A kind of gudgeon mounting structure of plasticator |
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| CN113321119B (en) | 2022-11-22 |
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