A conveying device for a tray for containing irradiated materials

Abstract

The present invention relates to the technical field of irradiation equipment, and particularly relates to a conveying device for a tray for containing irradiated materials, which comprises a plurality of conveying mechanisms I, a conveying mechanism II and an adjusting mechanism. The plurality of conveying mechanisms I are arranged continuously along the conveying direction, the conveying mechanism II is arranged at the conveying end of the last conveying mechanism I, the conveying mechanism I comprises an equal number of and a plurality of conveying rollers I and conveying rollers II, the conveying rollers I can slide in the vertical direction and have corresponding first positions and second positions before and after sliding, the conveying mechanism II is arranged at the conveying end of the last conveying mechanism I, the conveying mechanism II comprises a plurality of conveying rollers III, the rotating directions of the conveying rollers III and the conveying rollers I are the same, and both are configured to be able to transport trays. The adjusting mechanism is used to drive the conveying rollers I to switch between the first position and the second position so as to adjust the distance between two adjacent trays to a preset spacing, achieving time and labor saving while achieving the optimal radiation layout.

Description

Technical Field

[0001] The present invention relates to the technical field of irradiation equipment, and particularly to a conveying device for a tray for containing irradiated materials. Background Art

[0002] Irradiation technology is a technology that uses rays (such as electrons, γ rays, etc.) to interact with matter, and through the activated atoms and molecules generated by ionization and excitation, thereby causing physical, chemical or biological changes in the matter. Its applications are very extensive, including but not limited to fields such as food preservation, sterilization of medical and health supplies, processing of polymer materials, environmental protection, and industrial wastewater treatment.

[0003] In the irradiation processing process, it is necessary to first place the materials to be irradiated on a tray, and then convey the tray on a conveying device in a way to continuously irradiate the materials to be irradiated. In related technologies, for example, the Chinese reference document with the authorization announcement number CN211109321U discloses a conveying mechanism for the irradiation device passing through the source. When this conveying mechanism for the irradiation device passing through the source is in use, by setting an inclined plate and a storage plate, it can be folded and stored through the first hinge and the second hinge, so as to conveniently push an object onto the rotating roller through a transition platform. By setting a working plate and a telescopic plate, the opening size of the through groove can be controlled, thereby avoiding external interference and ensuring the irradiation work efficiency at the same time.

[0004] Although the above-mentioned conveying mechanism for the irradiation device passing through the source reduces the labor intensity of workers to a certain extent, it is found in actual use that in order to achieve the best irradiation layout, it is often necessary to manually adjust the tray spacing and tray position, resulting in a large error and affecting the irradiation efficiency. Summary of the Invention

[0005] Based on this, in view of the problem of low irradiation efficiency existing in the current irradiation process, it is necessary to provide a conveying device for a tray for containing irradiated materials.

[0006] The above object is achieved by the following technical solutions:

[0007] A conveying device for a tray for containing irradiated materials, comprising:

[0008] A plurality of first conveying mechanisms, the plurality of first conveying mechanisms are continuously arranged along the conveying direction. The first conveying mechanism includes an equal number of and a plurality of first conveying rollers and second conveying rollers. The first conveying rollers and the second conveying rollers are both arranged horizontally and in parallel, and are arranged at equal intervals and alternately along the conveying direction. The first conveying rollers can slide in the vertical direction and have corresponding first positions and second positions before and after sliding. When in the first position, the first conveying rollers can rotate self - sufficiently. When in the second position, both the first conveying rollers and the second conveying rollers can rotate self - sufficiently, and the rotation directions are opposite;

[0009] The second conveying mechanism is arranged at the conveying end of the last first conveying mechanism. The second conveying mechanism includes a plurality of third conveying rollers. The third conveying rollers are all arranged horizontally and parallel to the first conveying rollers, and can rotate self - sufficiently. The plurality of third conveying rollers are arranged at equal intervals along the conveying direction. The rotation direction of the third conveying rollers is the same as that of the first conveying rollers, and they are all configured to be able to transport pallets.

[0010] The adjusting mechanism is configured to be able to drive the first conveying rollers to switch between the first position and the second position, so as to adjust the distance between two adjacent pallets to a preset spacing.

[0011] Further, the adjusting mechanism includes an elastic member, a first adjusting rod and a second adjusting rod with equal structures. The length of the first adjusting rod is equal to the distance between two adjacent first conveying rollers. The length of the second adjusting rod is equal to the preset spacing. Wedge - shaped blocks one and two are arranged at both ends of the first adjusting rod and the second adjusting rod. The wedge - shaped blocks one and two are in a stop - matching relationship with the first conveying rollers during use. There are multiple first adjusting rods, and they are arranged at equal intervals along the conveying direction. Two adjacent first adjusting rods are staggered along the axis direction of the first conveying rollers, and the wedge - shaped blocks one and two of two adjacent first adjusting rods are located below the same first conveying roller. The wedge - shaped block two of the second adjusting rod is correspondingly arranged with the wedge - shaped block one of the last first adjusting rod along the conveying direction. The wedge - shaped block one of the second adjusting rod is located below one of the third conveying rollers and is in a stop - matching relationship with this third conveying roller. This third conveying roller can slide in the vertical direction and has corresponding first and second positions before and after sliding. There are multiple elastic members, and they are arranged in one - to - one correspondence with the first adjusting rod and the second adjusting rod. Under the action of the elastic members, both the first adjusting rod and the second adjusting rod have a tendency to reset.

[0012] Further, the length of the pallet is N times the distance between two adjacent first conveying rollers and second conveying rollers, where N is an odd number greater than 1.

[0013] Further, the distance between two adjacent pallets during initial placement is less than the preset spacing.

[0014] Further, the length of the second adjusting rod can be changed to adjust the preset spacing.

[0015] Further, the elastic member is a spring.

[0016] Further, a first friction pattern is spirally provided on the circumferential side wall of the first conveying roller. The head end and the tail end of the first friction pattern are located on the same straight line. A plurality of the first friction patterns are provided and are evenly arranged in the circumferential direction. The cooperation mode between the first friction pattern and the tray is friction drive.

[0017] Further, a second friction pattern is spirally provided on the circumferential side wall of the second conveying roller. The head end and the tail end of the second friction pattern are located on the same straight line. The spiral direction of the second friction pattern is opposite to that of the first friction pattern, and the number of the second friction patterns is equal to that of the first friction patterns and is evenly arranged in the circumferential direction. The cooperation mode between the second friction pattern and the tray is friction drive.

[0018] Further, the first conveying mechanism further includes a first driving assembly configured to provide driving force for the first conveying roller and the second conveying roller to rotate self.

[0019] Further, the second conveying mechanism further includes a second driving assembly configured to provide driving force for the second conveying roller to rotate self.

[0020] The beneficial effects of the present invention are as follows:

[0021] When the conveying device for trays containing irradiated materials provided by the present invention is in use, first, the first conveying roller and the third conveying roller are driven to rotate. Then, the trays containing irradiated materials are continuously placed on the first conveying mechanism. As the first conveying roller rotates, the trays containing irradiated materials move along the conveying direction and move from the first conveying mechanism to the second conveying mechanism. During the movement of the trays containing irradiated materials, under the action of the adjusting mechanism, the first conveying roller switches between the first position and the second position. When the first conveying roller is in the second position, both the first conveying roller and the second conveying roller rotate self, and the rotation directions are opposite, so as to adjust the distance between two adjacent trays to a preset distance, thereby achieving time and labor saving while achieving the optimal radiation layout and improving the irradiation efficiency.

[0022] Further, by providing the first friction pattern, when the position of the tray containing irradiated materials remains unchanged under the combined rotation of the first conveying roller and the second conveying roller, the tray containing irradiated materials can move axially along the first conveying roller to the middle of the first conveying roller under the friction drive of the first friction pattern, thereby realizing automatic correction of the irradiation position of the irradiated materials and improving the irradiation effect.

[0023] Further, by providing the second friction pattern with a spiral direction opposite to that of the first friction pattern, when the position of the tray containing irradiated materials remains unchanged under the combined rotation of the first conveying roller and the second conveying roller, the tray containing irradiated materials can be translated axially along the first conveying roller to the middle of the first conveying roller under the combined friction drive of the first friction pattern and the second friction pattern, avoiding misalignment caused by deflection. Description of the Drawings

[0024] Figure 1 Schematic perspective view of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention;

[0025] Figure 2 Schematic cross-sectional view of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention;

[0026] Figure 3 For Figure 2 Schematic enlarged partial view of location A in

[0027] Figure 4 Schematic perspective view of a first conveying mechanism of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention;

[0028] Figure 5 For Figure 4 Schematic enlarged partial view of location B in

[0029] Figure 6 Schematic perspective view of a first frame of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention;

[0030] Figure 7 For Figure 6 Schematic enlarged partial view of location C in

[0031] Figure 8 Schematic perspective view of a first conveying mechanism of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention, with the first frame and the first adjusting rod removed;

[0032] Figure 9 Schematic perspective view of a first adjusting rod of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention;

[0033] Figure 10 Schematic perspective view of the assembly of a first conveying roller, a second conveying roller, a first frame and a first adjusting rod of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention;

[0034] Figure 11 Schematic perspective view of the assembly of a first conveying roller, a second conveying roller and a first adjusting rod of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention;

[0035] Figure 12 Front view of the assembly of a first conveying roller, a second conveying roller and a first adjusting rod of a conveying device for a tray containing irradiated materials provided by an embodiment of the present invention.

[0036] Wherein:

[0037] 1. Conveyor mechanism 1; 11. Frame 1; 111. Side frame; 1111. Mounting hole 1; 1112. Mounting hole 2; 112. Cross bar; 113. Guide rail; 12. Conveyor roller 1; 121. Friction pattern 1; 13. Conveyor roller 2; 131. Friction pattern 2; 14. Bearing sleeve; 15. Friction wheel; 16. Pulley 1; 17. Conveyor belt 1; 18. Motor 1;

[0038] 2. Conveyor mechanism 2; 21. Frame 2; 211. U-shaped rod; 22. Conveyor roller 3; 23. Motor 2;

[0039] 3. Adjusting rod 1; 31. Wedge block 1; 32. Wedge block 2;

[0040] 4. Adjusting rod 2. Detailed implementation mode

[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The terms "connection" and "coupling" used in this application, unless otherwise specifically stated, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0044] As Figures 1 to 12As shown in the figure, the conveying device for trays containing irradiated materials provided by an embodiment of the present invention is used to transport trays containing irradiated materials; in this embodiment, the conveying device for trays containing irradiated materials is set to include a plurality of first conveying mechanisms 1, a second conveying mechanism 2, and an adjusting mechanism. The plurality of first conveying mechanisms 1 are arranged continuously along the conveying direction. Taking the number of the first conveying mechanisms 1 being four as an example, as Figure 1 shown, the four first conveying mechanisms 1 extend along the same straight line direction, and adjacent first conveying mechanisms 1 are connected to convey the tray transported by the previous first conveying mechanism 1.

[0045] The first conveying mechanism 1 is set to include a plurality of first conveying rollers 12 and second conveying rollers 13 with equal numbers. The first conveying rollers 12 and the second conveying rollers 13 are both arranged horizontally and in parallel, and are arranged at equal intervals and alternately along the conveying direction. The first conveying rollers 12 can slide in the vertical direction and have corresponding first positions and second positions before and after sliding. When in the first position, the first conveying rollers 12 can rotate self - sufficiently. When in the second position, both the first conveying rollers 12 and the second conveying rollers 13 can rotate self - sufficiently, and the rotation directions are opposite.

[0046] Specifically, for the convenience of installing the first conveying rollers 12 and the second conveying rollers 13, the first conveying mechanism 1 is further set to include a first frame 11, as Figure 6 shown, the first frame 11 is set to be composed of two side frames 111 and two cross bars 112. The side frame 111 is set as a "П"-shaped frame structure and has a horizontal section and two vertical sections arranged vertically. The length direction of the horizontal section is parallel to the conveying direction. The two cross bars 112 are correspondingly arranged with the two vertical sections of the same side frame 111. When installed, the rear end of the left cross bar 112 is vertically and fixedly connected to the left cross bar 112 of the rear side frame 111, and the front end is vertically and fixedly connected to the left cross bar 112 of the front side frame 111. The rear end of the right cross bar 112 is vertically and fixedly connected to the right cross bar 112 of the rear side frame 111, and the front end is vertically and fixedly connected to the right cross bar 112 of the front side frame 111. The cross - section of the horizontal section of the left side frame 111 is set to be composed of two "г" - shaped structures symmetrically spliced at the center. The cross - section of the right side frame 111 is set as a "τ" - shaped. A plurality of equal - number and multiple first mounting holes 1111 and second mounting holes 1112 are all perforated through the side wall surfaces of the horizontal section of the side frame 111. The plurality of first mounting holes 1111 and the plurality of second mounting holes 1112 are arranged at equal intervals and alternately along the length direction of the horizontal section. The first mounting holes 1111 on the two side frames 111 of the same first frame 11 are arranged in one - to - one correspondence, and the connection line between the two correspondingly arranged first mounting holes 1111 is parallel to the cross bar 112. The second mounting holes 1112 on the two side frames 111 of the same first frame 11 are arranged in one - to - one correspondence, and the connection line between the two correspondingly arranged second mounting holes 1112 is parallel to the cross bar 112, as Figure 4As shown, when installed, the first conveying roller 12 and the second conveying roller 13 are both arranged parallel to the cross bar 112. The left end of the first conveying roller 12 is rotatably inserted into the first mounting hole 1111 of the left side frame 111, and the right end is rotatably inserted into the first mounting hole 1111 of the right side frame 111. The left end of the second conveying roller 13 is rotatably inserted into the second mounting hole 1112 of the left side frame 111, and the right end is rotatably inserted into the second mounting hole 1112 of the right side frame 111.

[0047] For example, the number of the first conveying roller 12 and the second conveying roller 13 can both be set to seven. The seven first conveying rollers 12 and the seven second conveying rollers 13 are arranged at equal intervals and alternately along the length direction of the horizontal section of the side frame 111. The number of the first mounting holes 1111 and the second mounting holes 1112 on the horizontal section of each side frame 111 can both be set to seven. The seven first mounting holes 1111 and the seven second mounting holes 1112 are arranged at equal intervals and alternately along the length direction of the horizontal section of the side frame 111. The first conveying roller 12 is correspondingly inserted into the two corresponding first mounting holes 1111 on the two side frames 111 of the same first frame 11, and the second conveying roller 13 is correspondingly inserted into the two corresponding second mounting holes 1112 on the two side frames 111 of the same first frame 11.

[0048] To enable the first conveying roller 12 to slide in the vertical direction, as Figure 7 shown, the shape of the first mounting hole 1111 is set to be the same as the shape of an A-type flat key (round-corner rectangle), the shape of the second mounting hole 1112 is set to be circular, and the bottoms of the first mounting hole 1111 and the second mounting hole 1112 are flush. The top of the first mounting hole 1111 is higher than the top of the second mounting hole 1112 to leave space for the first conveying roller 12 to slide in the vertical direction. When the first conveying roller 12 is at the top of the first mounting hole 1111, the first conveying roller 12 is in the first position. When the first conveying roller 12 is at the bottom of the first mounting hole 1111, the first conveying roller 12 is in the second position.

[0049] More specifically, to improve the stability of the first conveying roller 12 and the second conveying roller 13 during rotation, bearing sleeves 14 are sleeved on both ends of each of the first conveying roller 12 and the second conveying roller 13. When installed, the bearing sleeves 14 are arranged on the horizontal section of the side frame 111.

[0050] The second conveying mechanism 2 is arranged at the conveying end of the last first conveying mechanism 1. As Figure 1 shown, the second conveying mechanism 2 is arranged on the left side of the fourth first conveying mechanism 1 counted from top to bottom and is connected to the first conveying mechanism 1 to receive the trays transported by the first conveying mechanism 1.

[0051] The conveying mechanism II 2 is arranged to include a plurality of conveying rollers III 22. The conveying rollers III 22 are all arranged horizontally and parallel to the conveying roller I 12, and can rotate self - sufficiently. The plurality of conveying rollers III 22 are arranged at equal intervals along the conveying direction. The rotating directions of the conveying rollers III 22 and the conveying roller I 12 are the same, and both are configured to be able to transport pallets.

[0052] Specifically, for the convenience of installing the conveying rollers III 22, the conveying mechanism II 2 is also arranged to include a frame II 21. As Figure 1 shown, the frame II 21 is similar in structure to the frame I 11, and the only difference is that the structure connecting the two side frames 111 in the frame II 21 is a U - shaped rod 211; a plurality of mounting holes III are penetrated through the side wall surfaces of the horizontal sections of the side frames 111 of the frame II 21. The plurality of mounting holes III are arranged at equal intervals and alternately along the length direction of the horizontal section. The mounting holes III on the two side frames 111 of the frame II 21 are arranged in one - to - one correspondence, and the connection line between the two corresponding mounting holes III is arranged parallel to the U - shaped rod 211. When installing, the conveying rollers III 22 are all arranged parallel to the U - shaped rod 211, and the left end of the conveying roller III 22 can be rotatably inserted into the mounting hole III of the left - hand side frame 111 of the frame II 21, and the right end can be rotatably inserted into the mounting hole III of the right - hand side frame 111 of the frame II 21.

[0053] The adjusting mechanism is configured to be able to drive the conveying roller I 12 to switch between the first position and the second position, so as to adjust the distance between adjacent two pallets to a preset spacing.

[0054] Initially, the conveying rollers I 12 are all located at the first position.

[0055] During the use process, as Figure 1 shown, first drive the conveying roller I 12 and the conveying rollers III 22 to rotate, and then continuously place the pallets containing irradiated materials on the first conveying mechanism I 1 from top to bottom. As the conveying roller I 12 rotates, the pallets containing irradiated materials move along the conveying direction, first moving from the first conveying mechanism I 1 from top to bottom to the second conveying mechanism I 1 from top to bottom, then from the second conveying mechanism I 1 from top to bottom to the third conveying mechanism I 1 from top to bottom, then from the third conveying mechanism I 1 from top to bottom to the fourth conveying mechanism I 1 from top to bottom, and then from the fourth conveying mechanism I 1 from top to bottom to the conveying mechanism II 2. As the conveying rollers III 22 rotate, the pallets containing irradiated materials move along the preset irradiation path to receive irradiation.

[0056] During the movement of the trays containing irradiated materials, when the first tray containing irradiated materials moves to the set position on the second conveying mechanism 2, under the action of the adjusting mechanism, some of the first conveying rollers 12 move from the first position to the second position. At this time, the first conveying rollers 12 at the second position and the adjacent second conveying rollers 13 rotate in opposite directions, and the trays containing irradiated materials on them remain stationary. As the third conveying rollers 22 continue to rotate, the first tray containing irradiated materials continues to move until the distance between it and the second tray containing irradiated materials is the preset spacing. At this time, under the action of the adjusting mechanism, some of the first conveying rollers 12 move from the second position to the first position, enabling the trays containing irradiated materials to continue to move, and so on, so that all the trays containing irradiated materials transported on the second conveying mechanism 2 achieve the optimal radiation layout, saving time and effort and improving the irradiation efficiency.

[0057] In some embodiments, the adjusting mechanism is configured to include an elastic member, a first adjusting rod 3 and a second adjusting rod 4 with equal structures. The length of the first adjusting rod 3 is equal to the distance between two adjacent first conveying rollers 12, and the length of the second adjusting rod 4 is equal to the preset spacing. Wedge-shaped blocks 31 and 32 are provided at both ends of the first adjusting rod 3 and the second adjusting rod 4. The wedge-shaped blocks 31 and 32 are in a stop fit with the first conveying rollers 12 during use.

[0058] In this embodiment, as Figure 9 shown, the first adjusting rod 3 is configured as a square rod-shaped structure. The cross-sectional shape of the wedge-shaped block 31 is a right triangle, and the bottom where the right-angle side is located coincides with the top of the first adjusting rod 3, and the side where the other right-angle side is located coincides with the right end face of the first adjusting rod 3. The wedge-shaped surface where the hypotenuse is located faces left. The wedge-shaped block 32 is configured as a right trapezoid in cross-section, and the wedge-shaped surface where the inclined waist is located faces left. The side where the straight waist is located is perpendicular to the top of the first adjusting rod 3, and the bottom where the long base is located coincides with the top of the first adjusting rod 3; and the slope of the wedge-shaped surface where the hypotenuse of the wedge-shaped block 31 is located is greater than the slope of the wedge-shaped surface where the inclined waist of the wedge-shaped block 32 is located, so that the driving force required to push the wedge-shaped surface of the wedge-shaped block 31 is smaller, and the upward pushing force given by the wedge-shaped block 32 to the first conveying roller 12 is larger.

[0059] Specifically, for the convenience of installing the first adjusting rod 3 and the second adjusting rod 4, as Figure 4 and Figure 5 shown, a horizontally placed "F"-shaped guide rail 113 is provided on the left side wall surface of the horizontal section of the right side frame 111 of the first frame 11. The guide rail 113 extends along the length direction of the horizontal section. There are two parallel sliding grooves on the upper end surface of the guide rail 113. When installing, the first adjusting rod 3 and the second adjusting rod 4 are both arranged to be inserted into the sliding grooves in parallel and can slide along the sliding grooves.

[0060] There are multiple adjusting rods 1-3, which are arranged at equal intervals along the conveying direction. Two adjacent adjusting rods 1-3 are staggered in the axial direction of the first conveying roller 12, and the first wedge blocks 31 and the second wedge blocks 32 of two adjacent adjusting rods 1-3 are located below the same first conveying roller 12; the second wedge blocks 32 of the adjusting rod 2-4 and the first wedge blocks 31 of the last adjusting rod 1-3 along the conveying direction are correspondingly arranged. The first wedge blocks 31 of the adjusting rod 2-4 are located below one of the third conveying rollers 22, and are in a stop fit with the third conveying roller 22. The third conveying roller 22 can slide vertically and has corresponding first and second positions before and after sliding.

[0061] Specifically, as Figure 2 shown, when installing, two adjacent adjusting rods 1-3 are respectively inserted into two chutes; the first wedge blocks 31 on the adjusting rod 2-4 are located below the sixth third conveying roller 22 counted from right to left. Under the pushing action of the wedge surface of the first wedge blocks 31 on the adjusting rod 2-4, the sixth third conveying roller 22 counted from right to left is in the first position. The second wedge blocks 32 on the adjusting rod 2-4 and the first wedge blocks 31 of the first adjusting rod 1-3 counted from right to left are located below the first first conveying roller 12 counted from right to left. Under the combined pushing action of the top surface where the short top edges of the second wedge blocks 32 on the adjusting rod 2-4 are located and the wedge surfaces of the first wedge blocks 31 of the first adjusting rod 1-3 counted from right to left, the first first conveying roller 12 counted from right to left is in the first position; at the same time, the second wedge blocks 32 of the first adjusting rod 1-3 counted from right to left are located below the second first conveying roller 12 counted from right to left, and the first wedge blocks 31 of the second adjusting rod 1-3 counted from right to left are located below the second first conveying roller 12 counted from right to left. Under the combined pushing action of the top surface where the short top edges of the second wedge blocks 32 of the first adjusting rod 1-3 counted from right to left are located and the wedge surfaces of the first wedge blocks 31 of the second adjusting rod 1-3 counted from right to left, the second first conveying roller 12 counted from right to left is in the first position, and so on. All the first conveying rollers 12 are in the first position.

[0062] There are multiple elastic members, which are correspondingly arranged one by one with the adjusting rods 1-3 and the adjusting rod 2-4. Under the action of the elastic members, both the adjusting rods 1-3 and the adjusting rod 2-4 have a tendency to reset.

[0063] In this embodiment, the elastic member is set as a spring (not shown). When the spring is a compression spring, the compression spring is arranged on the right side of the first adjusting rod 3 or the second adjusting rod 4, and one end is fixedly connected to the horizontal section of the side frame 111, and the other end is fixedly connected to the right end of the first adjusting rod 3 or the second adjusting rod 4. Under the action of the compression spring, both the first adjusting rod 3 and the second adjusting rod 4 have a tendency to move to the left, so that the first conveying roller 12 or the third conveying roller 22 has a tendency to remain in the first position. Similarly, when the spring is a tension spring, the tension spring is arranged on the left side of the first adjusting rod 3 or the second adjusting rod 4, and one end is fixedly connected to the horizontal section of the side frame 111, and the other end is fixedly connected to the left end of the first adjusting rod 3 or the second adjusting rod 4. Under the action of the tension spring, both the first adjusting rod 3 and the second adjusting rod 4 have a tendency to move to the left, so that the first conveying roller 12 or the third conveying roller 22 has a tendency to remain in the first position.

[0064] As Figure 2 shown, during the movement of the tray containing the irradiated material, when the right end of the first tray containing the irradiated material moves above the third conveying roller 22 (the sixth third conveying roller 22 counted from right to left) supported by the first wedge 31 on the second adjusting rod 4, under the gravity of the first tray containing the irradiated material, the third conveying roller 22 moves downward in the vertical direction from the first position to the second position. During the movement of the third conveying roller 22, the third conveying roller 22 synchronously drives the second adjusting rod 4 to move to the right through the inclined plane cooperation, and makes the corresponding spring store energy. During the movement of the second adjusting rod 4, the second wedge 32 on the second adjusting rod 4 synchronously moves to the right and no longer blocks the downward movement of the first conveying roller 12 counted from right to left. As the first conveying roller 12 rotates, when the second tray containing the irradiated material passes through the first conveying roller 12 counted from right to left, under the gravity of the second tray containing the irradiated material, the first conveying roller 12 moves downward in the vertical direction from the first position to the second position. During the movement of the first conveying roller 12, the first conveying roller 12 synchronously drives the first adjusting rod 3 counted from right to left to move to the right through the inclined plane cooperation, and makes the corresponding spring store energy. During the movement of the first adjusting rod 3 to the right, the second wedge 32 on the first adjusting rod 3 synchronously moves to the right and no longer blocks the downward movement of the second conveying roller 12 counted from right to left, and so on, and continuously unlocks the other first adjusting rods 3; when the first conveying roller 12 moves to the second position, the first conveying roller 12 and the adjacent second conveying roller 13 rotate in opposite directions synchronously, so that the second tray containing the irradiated material remains stationary, and so on, so that all the trays containing the irradiated material remain stationary after arriving.

[0065] As the third conveying roller 22 continues to rotate, the first tray containing irradiated materials continues to move until the distance between it and the second tray containing irradiated materials reaches the preset spacing. At this time, the left end of the first tray containing irradiated materials crosses the third conveying roller 22 supported by the first wedge block 31 on the second adjusting rod 4 (the sixth third conveying roller 22 counted from right to left). Under the action of the corresponding spring, the second adjusting rod 4 moves to the left to the initial position. At this time, under the combined pushing action of the wedge surface of the second wedge block 32 of the first adjusting rod 3 counted from right to left and the wedge surface of the first wedge block 31 of the second adjusting rod 4, the first conveying roller 12 counted from right to left moves upward in the vertical direction from the second position to the first position, and the conveying roller 13 adjacent to the conveying roller 12 stops rotating. Then, driven by the conveying roller 12, the second tray containing irradiated materials can continue to move, and the above process is repeated. Thus, all the trays containing irradiated materials transported on the second conveying mechanism 2 can reach the optimal radiation layout, saving time and effort and improving the irradiation efficiency.

[0066] In a further embodiment, to ensure the normal operation of the conveying device, the length of the tray is set to N times the distance between two adjacent conveying rollers 12 and conveying rollers 13, where N is an odd number greater than 1, so that when the tray remains stationary, there are an equal number of conveying rollers 12 and conveying rollers 13 corresponding to its lower side; for example, as Figure 2 shown, N can be set to nine, so that when the tray remains stationary, there are five conveying rollers 12 and five conveying rollers 13 corresponding to its lower side; and under the linkage of the first conveying mechanism 1 and the conveying mechanism, only the distance between the trays can be increased, so the distance between two adjacent trays at the initial placement is set to be less than the preset spacing.

[0067] In some other embodiments, to improve the applicability of the conveying device, it is set that the length of the second adjusting rod 4 can be changed to adjust the preset spacing.

[0068] In this embodiment, all the third conveying rollers 22 are set to be able to slide in the vertical direction, the second adjusting rod 4 is set to be telescopic, and the telescopic length can be locked to change the third conveying roller 22 supported by the first wedge block 31 on the second adjusting rod 4.

[0069] Specifically, by setting the shapes of all the third mounting holes to be the same as the shape of the A-type flat key, space is provided for the third conveying roller 22 to slide in the vertical direction.

[0070] In some other embodiments, friction lines 121 are spirally arranged on the circumferential side wall of the conveying roller 12. The head and the tail of the friction lines 121 are located on the same straight line. The number of the friction lines 121 is set to be multiple and evenly arranged along the circumferential direction. The cooperation mode between the friction lines 121 and the tray is friction drive.

[0071] In this embodiment, as Figure 4 shown, the first friction pattern 121 is arranged in a symmetric structure and spirals from left to right and in a clockwise direction. The number of the first friction patterns 121 is set to three and they are evenly arranged in the circumferential direction.

[0072] During use, when the tray containing irradiated materials remains in place under the combined rotation of the first conveying roller 12 and the second conveying roller 13, as Figure 4 shown, when the first conveying roller 12 rotates counterclockwise and the position of the tray containing irradiated materials is to the left, the area of the left first friction pattern 121 occupied by the tray on the same first conveying roller 12 is larger than the area of the right first friction pattern 121. And under the friction drive of the left first friction pattern 121, the tray receives a force F1 towards the lower right, and under the friction drive of the right first friction pattern 121, the tray receives a force F2 towards the lower left. Since the pressure of the tray on the first conveying roller 12 is equal everywhere, therefore, when the material (friction coefficient) of the first friction pattern 121 remains unchanged, F1 > F2. After decomposition, F1 has a component force F11 that makes the tray move to the right, and F2 has a component force F21 that makes the tray move to the left, and F11 > F21. Therefore, under the friction drive of the first friction pattern 121, the tray containing irradiated materials can move to the middle of the first conveying roller 12, thereby automatically correcting the irradiation position of the irradiated materials and improving the irradiation effect.

[0073] Similarly, when the position of the tray containing irradiated materials is to the right, under the friction drive of the first friction pattern 121, the tray containing irradiated materials can move to the middle of the first conveying roller 12, thereby automatically correcting the irradiation position of the irradiated materials and improving the irradiation effect.

[0074] In a further embodiment, since F1 simultaneously has a component force F12 that makes the tray move downward, and F2 simultaneously has a component force F22 that makes the tray move downward, and F12 ≠ F22, therefore, under the combined action of F12 and F22, the tray has a tendency to deflect counterclockwise. When the tray deflects, the irradiation position of the irradiated materials contained in the tray will change, thereby affecting the irradiation effect. To solve this problem, it is set that the circumferential side wall of the second conveying roller 13 is spirally provided with a second friction pattern 131. The head and the tail of the second friction pattern 131 are located on the same straight line. The spiral direction of the second friction pattern 131 is opposite to that of the first friction pattern 121, and the number is equal to that of the first friction pattern 121 and they are evenly arranged in the circumferential direction. The cooperation mode between the second friction pattern 131 and the tray is friction drive.

[0075] In this embodiment, as Figure 4As shown, the second friction pattern 131 is arranged in a symmetric structure and spirals counterclockwise from left to right. The number of the second friction patterns 131 is three and they are evenly arranged in the circumferential direction. Initially, the first friction pattern 121 on the adjacent first conveying roller 12 and the second friction pattern 131 on the second conveying roller 13 are symmetrically arranged.

[0076] During the use process, when the position of the tray containing the irradiated material remains unchanged under the combined rotation of the first conveying roller 12 and the second conveying roller 13, when the first conveying roller 12 rotates counterclockwise and the position of the tray containing the irradiated material is biased to the left, at this time the conveying roller 13 rotates clockwise. The area of the left second friction pattern 131 occupied by the tray on the same second conveying roller 13 is larger than the area of the right second friction pattern 131. And under the friction driving action of the left first friction pattern 121, the tray is subjected to a force F3 directed to the upper right, and under the friction driving action of the right first friction pattern 121, the tray is subjected to a force F4 directed to the upper left. Since the pressure of the tray on the second conveying roller 13 is equal everywhere, therefore, when the material of the second friction pattern 131 (friction coefficient) remains unchanged, F3 > F4. After decomposition, F3 has a component force F31 that makes the tray move to the right, and F4 has a component force F41 that makes the tray move to the left. F31 > F41. Therefore, under the combined friction driving action of the first friction pattern 121 and the second friction pattern 131, the tray containing the irradiated material can move to the middle of the first conveying roller 12, thereby realizing the automatic correction of the irradiation position of the irradiated material and improving the irradiation effect; F3 also has a component force F32 that makes the tray move upward, and F4 also has a component force F42 that makes the tray move upward. F32 ≠ F42, F32 = F12 and the directions are opposite, F42 = F22 and the directions are opposite. Therefore, under the combined action of F12, F22, F32, and F42, the tray can be translated to the middle of the first conveying roller 12 to avoid misalignment caused by deflection.

[0077] Similarly, when the position of the tray containing the irradiated material is biased to the right, under the combined friction driving action of the first friction pattern 121 and the second friction pattern 131, the tray containing the irradiated material can move leftward to the middle of the first conveying roller 12, thereby avoiding misalignment caused by deflection.

[0078] In some other embodiments, the first conveying mechanism 1 is further provided with a first driving assembly, and the first driving assembly is configured to be able to provide the driving force for the self-rotation of the first conveying roller 12 and the second conveying roller 13.

[0079] In this embodiment, as Figure 8As shown in the figure, the first driving assembly can be set to include a friction wheel 15, a first belt pulley 16, a first conveyor belt 17, and a first motor 18. The number of the first motors 18 is equal to that of the first conveying mechanisms 1, and they are fixedly arranged in one-to-one correspondence on the horizontal section of the first frame 11 during installation. There are multiple friction wheels 15, which are arranged in one-to-one correspondence with the first conveying rollers 12 and the second conveying rollers 13, and are fixedly sleeved on the left end of the first conveying roller 12 or the second conveying roller 13 during installation. When the first conveying roller 12 is in the first position, the friction wheels 15 on the first conveying roller 12 are disengaged from the friction wheels 15 on the adjacent second conveying roller 13. When the first conveying roller 12 is in the second position, the friction wheels 15 on the first conveying roller 12 are in friction with the friction wheels 15 on the adjacent second conveying roller 13. For one first conveying mechanism 1, the number of the first belt pulleys 16 is one more than that of the first conveying rollers 12, and they are fixedly sleeved on the left end of the first conveying roller 12 and the motor shaft of the first motor 18 in one-to-one correspondence during installation. The number of the first conveyor belts 17 is set to be equal to that of the first conveying rollers 12, and they are sleeved on two adjacent first belt pulleys 16 in one-to-one correspondence.

[0080] For example, when the number of the first conveying mechanisms 1 is set to four, and each first conveying mechanism 1 is set to include seven first conveying rollers 12 and seven second conveying rollers 13, the number of the first motors 18 is correspondingly set to four, the number of the friction wheels 15 is correspondingly set to fifty-six, the number of the first belt pulleys 16 is correspondingly set to thirty-two, and the number of the first conveyor belts 17 is correspondingly set to twenty-eight.

[0081] During the use process, taking one first conveying mechanism 1 and the first conveying rollers 12 all being in the first position as an example, when the first motor 18 is started, the first motor 18 drives the first conveying roller 12 to rotate forward self-drivenly through the first conveyor belt 17. During the forward self-rotation process of the first conveying roller 12, the first conveying roller 12 drives the second conveying roller 12 to rotate forward self-drivenly through the first conveyor belt 17, and so on, thereby driving all the first conveying rollers 12 to rotate forward self-drivenly.

[0082] Taking one first conveying mechanism 1 and the first conveying rollers 12 all being in the second position as an example, when the first motor 18 is started, the first motor 18 drives the first conveying roller 12 to rotate forward self-drivenly through the first conveyor belt 17. During the forward self-rotation process of the first conveying roller 12, on the one hand, the first conveying roller 12 drives the second conveying roller 12 to rotate forward self-drivenly through the first conveyor belt 17, and on the other hand, it drives the first second conveying roller 13 to rotate reversely through the friction transmission between the friction wheel 15 on it and the friction wheel 15 on the first second conveying roller 13, and so on, thereby driving all the first conveying rollers 12 to rotate forward self-drivenly and driving all the second conveying rollers 13 to rotate reversely.

[0083] In other embodiments, it can also be set to use a first sprocket to replace the first belt pulley 16 and use a first transmission chain to replace the first conveyor belt 17.

[0084] In some other embodiments, the second conveying mechanism 2 is further provided with a second driving component, and the second driving component is configured to be able to provide the driving force for the rotation of the second conveying roller 13.

[0085] In this embodiment, the second driving component is provided to include a second belt pulley, a second conveyor belt and a second motor 23. When installed, the second motor 23 is fixed on the horizontal section of the side frame 111 of the second frame 21; the number of the second belt pulleys is one more than the number of the third conveying rollers 22, and when installed, they are fixedly sleeved on the left ends of the third conveying rollers 22 and the motor shaft of the second motor 23 in one-to-one correspondence; the number of the second conveyor belts is set to be equal to the number of the third conveying rollers 22, and they are sleeved on two adjacent second belt pulleys in one-to-one correspondence.

[0086] During use, the second motor 23 is started, and the second motor 23 drives the first third conveying roller 22 to rotate forward through the second conveyor belt. During the forward rotation of the first third conveying roller 22, the first third conveying roller 22 drives the second third conveying roller 22 to rotate forward through the second conveyor belt, and so on, thereby driving all the third conveying rollers 22 to rotate forward.

[0087] In other embodiments, it can also be set to use a second sprocket instead of the second belt pulley and a second transmission chain instead of the second conveyor belt.

[0088] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0089] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A conveying device for a tray containing irradiated materials, characterized in that: include: A plurality of conveying mechanisms 1, wherein the plurality of conveying mechanisms 1 are continuously arranged along the conveying direction, and the conveying mechanism 1 comprises a plurality of conveying rollers 1 and 2 which are equal in number, wherein the conveying rollers 1 and 2 are both arranged transversely and in parallel, and are equally spaced and alternately arranged along the conveying direction, wherein the conveying rollers 1 can slide along the vertical direction, and have corresponding first and second positions before and after sliding, wherein the conveying rollers 1 can rotate on their own when in the first position, and the conveying rollers 1 and 2 can rotate on their own when in the second position, and the rotation directions are opposite; Conveying mechanism 2, the conveying mechanism 2 is arranged at the conveying end of the last conveying mechanism 1, the conveying mechanism 2 comprises a plurality of conveying rollers 3, the conveying rollers 3 are all arranged transversely and parallel to the conveying roller 1 and can rotate, the plurality of conveying rollers 3 are arranged at equal intervals along the conveying direction, the conveying rollers 3 and the conveying roller 1 have the same rotation direction, and are both configured to transport pallets; An adjusting mechanism, wherein the adjusting mechanism is configured to drive the conveying roller 1 to switch between the first position and the second position, so as to adjust the distance between two adjacent trays to a preset distance; The adjusting mechanism comprises an elastic member, an adjusting rod 1 and an adjusting rod 2 of equal structure, the length of the adjusting rod 1 is equal to the distance between two adjacent conveying rollers 1, the length of the adjusting rod 2 is equal to the preset spacing, wedge blocks 1 and 2 are arranged at both ends of the adjusting rod 1 and the adjusting rod 2, and the wedge blocks 1 and 2 cooperate with the conveying roller 1 to stop when in use; there are multiple adjusting rods 1, and they are arranged at equal intervals along the conveying direction, two adjacent adjusting rods 1 are staggered along the axial direction of the conveying roller 1, and the wedge blocks 1 of two adjacent adjusting rods 1 and the wedge block 2 are located under the same conveying roller 1; the wedge block 2 of the adjusting rod 2 and the wedge block 1 of the last adjusting rod 1 along the conveying direction are arranged correspondingly, the wedge block 1 of the adjusting rod 2 is located under one of the conveying rollers 3, and there is a stopper cooperation between the wedge block 1 of the adjusting rod 2 and the conveying roller 3, the conveying roller 3 can slide in the vertical direction, and has the corresponding first position and the second position before and after sliding; there are a plurality of elastic members, and they are arranged one by one with the adjusting rod 1 and the adjusting rod 2, and under the action of the elastic members, the adjusting rod 1 and the adjusting rod 2 both have a tendency to reset; The adjusting rod 1 is configured as a square rod-shaped structure, and the cross-sectional shape of the wedge block 1 is a right triangle; the cross-sectional shape of the wedge block 2 is configured as a right trapezoid; and the slope of the wedge surface where the hypotenuse of the wedge block 1 is located is greater than the slope of the wedge surface where the oblique waist of the wedge block 2 is located.

2. The conveying device for trays containing irradiated materials according to claim 1, characterized in that: The length of the tray is N times the distance between two adjacent conveying rollers 1 and 2, where N is an odd number and greater than 1.

3. The conveying device for trays containing irradiated materials according to claim 2, characterized in that: When initially placed, the distance between two adjacent trays is smaller than the preset distance.

4. The conveying device for trays containing irradiated materials according to claim 1, characterized in that: The length of the adjusting rod 2 can be changed to adjust the preset distance.

5. The conveying device for trays containing irradiated materials according to claim 1, characterized in that: The elastic member is a spring.

6. The conveying device for trays containing irradiated materials according to claim 1, characterized in that: A friction pattern 1 is spirally arranged on the circumferential side wall of the conveying roller 1, the beginning and the end of the friction pattern 1 are located on the same straight line, there are multiple friction patterns 1, and they are evenly arranged along the circumference, and the cooperation between the friction pattern 1 and the tray is friction transmission.

7. The conveying device for trays containing irradiated materials according to claim 6, characterized in that: A friction pattern 2 is spirally arranged on the circumferential side wall of the conveying roller 2, the head end and the tail end of the friction pattern 2 are located on the same straight line, the spiral direction of the friction pattern 2 is opposite to that of the friction pattern 1, and the number of the friction pattern 2 is equal to that of the friction pattern 1, and they are evenly arranged along the circumferential direction, and the cooperation mode between the friction pattern 2 and the tray is friction transmission.

8. The conveying device for trays containing irradiated materials according to claim 1, characterized in that: The conveying mechanism 1 also includes a driving component 1, and the driving component 1 is configured to provide a driving force for the self-rotation of the conveying roller 1 and the conveying roller 2.

9. The conveying device for trays containing irradiated materials according to claim 1, characterized in that: The second conveying mechanism further includes a second driving component, and the second driving component is configured to provide a driving force for the second conveying roller to rotate.

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