High-temperature gas cooled reactor fuel ball material bag grabbing device

Abstract

The invention relates to the technical field of bagged fuel ball grabbing of a high-temperature gas cooled reactor, and discloses a high-temperature gas cooled reactor fuel ball material bag grabbing device which comprises a connecting unit and a material taking unit, the connecting unit comprises a connecting cylinder, an end cover, a separation ring and a deviation cylinder, and the connecting cylinder and the deviation cylinder are arranged on the two sides of the separation ring correspondingly; an end cover is arranged at the other end of the connecting cylinder; and the material taking unit comprises a rotating cylinder, a pulling and clamping rod, a spring and a movable cylinder, the rotating cylinder is coaxially matched with the offset cylinder, the pulling and clamping rod is arranged in the rotating cylinder, the spring is arranged at the top of the pulling and clamping rod, and the movable cylinder is coaxially and rotationally matched with the pulling and clamping rod in a sliding mode. According to the material bag clamping device, the pulling and clamping processes are decomposed, so that different clamping effects on the material bag are generated in the clamping processes, the effects generated in the processes act at the same time, the clamping effect is better, the fuel ball bag is clamped and fixed in the taking process, the swing amplitude of the material bag in the vertical direction is reduced, and collision between the material bag and a material barrel is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of bagged fuel ball grabbing of a high temperature gas-cooled reactor, in particular to a fuel ball bag grabbing device for a high temperature gas-cooled reactor. Background Art

[0002] Fuel balls are a type of nuclear fuel used in high-temperature gas-cooled reactors. Each fuel ball has a diameter of 6 cm, is covered with a graphite layer on the outside, and contains more than 10,000 granular nuclear fuels inside. The main advantages of fuel balls as nuclear fuel are high burnup, high heat transfer efficiency, high strength, good plasticity and corrosion resistance.

[0003] The fuel balls are placed in a single row of 20 fuel balls in a group and placed in a plastic packaging bag to form bagged fuel balls. Multiple groups of bagged fuel balls are stored in a fuel ball barrel. When in use, the bagged fuel balls need to be taken out of the barrel, the packaging bag is removed, and the fuel balls are taken out. The prior art is to manually take out the bagged fuel balls from the fuel ball barrel. When taking out the material, the plastic packaging bag is not rigid, which will cause the fuel ball bag to collide with the barrel, damage the fuel ball, and the labor cost of manual material taking is high. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above and / or existing problems in grabbing bagged fuel balls of a high temperature gas-cooled reactor, the present invention is proposed.

[0006] Therefore, the present invention aims to solve the problem that the fuel ball bag is easily collided with the barrel when the existing material taking device takes the material.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-temperature gas-cooled reactor fuel ball bag grabbing device, which includes a connecting unit, the connecting unit includes a connecting cylinder, an end cover, a separating ring and an offset cylinder, the connecting cylinder and the offset cylinder are respectively arranged on both sides of the separating ring, and the other end of the connecting cylinder is provided with an end cover; a material taking unit, the material taking unit includes a rotating cylinder, a clamping rod, a spring and a movable cylinder, the rotating cylinder and the offset cylinder are coaxially matched, the clamping rod is arranged inside the rotating cylinder, the spring is arranged at the top of the clamping rod, and the movable cylinder and the clamping rod are coaxially rotated and slidably matched.

[0008] As a preferred solution of the high temperature gas-cooled reactor fuel ball bag grabbing device described in the present invention, the connecting tube includes an inner cavity, the inner cavity is used to place the clamp rod, and the end cover includes a center hole, and the center hole is coaxially matched with the clamp rod.

[0009] As a preferred solution of the high-temperature gas-cooled reactor fuel ball bag grabbing device described in the present invention, the separating ring includes a sleeve and a fork rod, the fork rod includes a circular groove, an arc plate, a steering block and a mounting column, the circular groove is arranged at the end of the fork rod, the mounting column is engaged with the sleeve for rotation and sliding cooperation, one long side of the circular groove is slidably cooperated with the steering block, and the arc plate is arranged on the other long side of the circular groove.

[0010] As a preferred solution of the high temperature gas-cooled reactor fuel ball bag grabbing device of the present invention, the offset cylinder includes an offset slide, the offset slide is arranged on the side of the offset cylinder, and the offset slide is a three-section slide structure.

[0011] As a preferred solution of the high-temperature gas-cooled reactor fuel ball bag grabbing device described in the present invention, the rotating cylinder includes side protrusions and a rotating chute, the side protrusion array is arranged at the bottom of the rotating cylinder, the rotating chute is arranged on the side of the rotating cylinder, and the rotating chute is a two-stage structure.

[0012] As a preferred solution of the high-temperature gas-cooled reactor fuel ball bag grabbing device described in the present invention, the clamp rod includes a clamp, a slide rod and a fixed thread, the fixed thread is arranged at the top of the clamp rod, the clamp is arranged at the bottom of the clamp rod, and the slide rod is coaxially slidably matched with the movable cylinder.

[0013] As a preferred solution of the high-temperature gas-cooled reactor fuel ball bag grabbing device described in the present invention, the chuck includes an extrusion plate and a transverse groove, the extrusion plate is arranged at the end of the chuck, the transverse groove is arranged in the middle of the inner side of the clamp rod, and a sliding ball is arranged on the top of the extrusion plate, and the sliding ball is slidably matched with the transverse groove.

[0014] As a preferred solution of the high-temperature gas-cooled reactor fuel ball bag grabbing device described in the present invention, the sliding rod includes a sliding head, a trapezoidal cavity, a snap-fit ​​cavity, a transition cavity and a hollow cavity, the sliding head is arranged on the side of the sliding rod, the trapezoidal cavity is arranged at the end of the sliding rod, the transition cavity is connected to the trapezoidal cavity, the hollow cavity is arranged at the top of the transition cavity, and the snap-fit ​​cavity is arranged at the top of the sliding rod.

[0015] As a preferred solution of the high temperature gas-cooled reactor fuel ball bag grabbing device of the present invention, the movable cylinder is coaxially matched with the sliding rod, and the movable cylinder includes a snap ring, and the snap ring is slidably snap-fitted with the hollow cavity.

[0016] As a preferred solution of the high temperature gas-cooled reactor fuel ball bag grabbing device of the present invention, the spring is arranged in the middle of the inner cavity, and the spring is coaxially matched with the clamp rod.

[0017] The beneficial effects of the present invention are as follows: through the segmented slide groove structure, the pulling and clamping process is decomposed, so that each process produces different effects on the clamping of the material bag, and the effects produced by each process take effect at the same time, so that the clamping effect is better, so that the fuel ball bag is clamped and fixed when it is taken out, the vertical swing amplitude of the material bag is reduced, and the collision between the material bag and the barrel is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 This is the overall structure diagram of the high temperature gas-cooled reactor fuel ball bag grabbing device.

[0020] Figure 2 This is a top view of the high-temperature gas-cooled reactor fuel ball bag grabbing device.

[0021] Figure 3 This is a side view of the high temperature gas-cooled reactor fuel ball bag grabbing device.

[0022] Figure 4 This is the exploded diagram of the high temperature gas-cooled reactor fuel ball bag grabbing device.

[0023] Figure 5 This is a schematic diagram of the assembly structure of the high-temperature gas-cooled reactor fuel ball bag grabbing device.

[0024] Figure 6 This is a front view of the high-temperature gas-cooled reactor fuel ball bag grabbing device.

[0025] Figure 7 It is a cross-sectional view of the front view of the high-temperature gas-cooled reactor fuel ball bag grabbing device. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figure 1 to Figure 5 , is the first embodiment of the present invention, which provides a high-temperature gas-cooled reactor fuel ball bag grabbing device, including a connecting unit 100 and a picking unit 200, the connecting unit 100 includes a connecting cylinder 101, an end cover 102, a separation ring 103 and an offset cylinder 104, the connecting cylinder 101 and the offset cylinder 104 are respectively arranged on both sides of the separation ring 103, and the other end of the connecting cylinder 101 is provided with an end cover 102; the picking unit 200 includes a rotating cylinder 201, a clamping rod 202, a spring 203 and a movable cylinder 204, the rotating cylinder 201 and the offset cylinder 104 are coaxially matched, the clamping rod 202 is arranged inside the rotating cylinder 201, the spring 203 is arranged on the top of the clamping rod 202, and the movable cylinder 204 and the clamping rod 202 are coaxially rotated and slidably matched.

[0031] Specifically, since the fuel ball bag is made of flexible plastic material, it does not have vertical rigidity when clamped, so it will swing axially when clamped and moved, and the bag will collide with the barrel during the swing, causing the ball to be damaged and bumped, which may cause danger.

[0032] When in use, the connecting unit 100 provides a fixing function for the material taking unit 200. The connecting unit 100 is fixedly connected to the pull rod at the end of the cylinder of the clamping device through a threaded connection. The connecting tube 101 provides space for the movement of the pull rod. The end cover 102 is fixedly connected to the end of the external cylinder, so that the pull rod of the cylinder passes through the end cover and enters the interior of the connecting tube 101, and one side of the internal spring 203 contacts the end cover. When the cylinder is started to pull, the clamp rod 202 moves upward, causing the spring 203 to compress and produce The separating ring 103 generates elastic potential energy and divides the connecting unit 100 into two parts, an upper part and an lower part, so that they can perform different functions respectively. A slideway structure is arranged on the side of the offset cylinder 104. The slideway structure cooperates with the slide bar on the outer ring of the clamping rod 202 to enable the slide bar to rotate. The rising of the clamping rod 202 causes the clamping claws at its end to produce a clamping effect. The rotation of the offset cylinder 104 and the linkage of the lever on the side of the separating ring 103 produce a clamping effect, so that the material bag is further clamped and secured, thus avoiding bumps and drops of the material bag.

[0033] Example 2

[0034] Reference Figure 3 to Figure 7 , which is the second embodiment of the present invention, is different from the first embodiment in that the connecting tube 101 includes an inner cavity 101a, the inner cavity 101a is used to place the clamping rod 202, and the end cover 102 includes a central hole 102a, and the central hole 102a is coaxially matched with the clamping rod 202.

[0035] Furthermore, the rotating cylinder 201 includes a side protrusion 201a and a rotating slide 201b, the side protrusion 201a array is arranged at the bottom of the rotating cylinder 201, the rotating slide 201b is arranged on the side of the rotating cylinder 201, and the rotating slide 201b is a two-stage structure. The clamping rod 202 includes a clamping head 202a, a sliding rod 202b and a fixed thread 202c, the fixed thread 202c is arranged at the top of the clamping rod 202, the clamping head 202a is arranged at the bottom of the clamping rod 202, the sliding rod 202b and the movable cylinder 204 are coaxially slidably matched, the clamping head 202a includes an extrusion plate 202a-1 and a transverse groove 202a-2, the extrusion plate 202a-1 is arranged at the end of the clamping head 202a, and the transverse groove 202 a-2 is arranged in the middle of the inner side of the clamp rod 202, a sliding ball 202a-11 is arranged on the top of the extrusion plate 202a-1, and the sliding ball 202a-11 slides in cooperation with the transverse groove 202a-2, the slide rod 202b includes a sliding head 202b-1, a trapezoidal cavity 202b-2, a snap-fit ​​cavity 202b-3, a transition cavity 202b-4 and a hollow cavity 202b-5, the sliding head 202b-1 is arranged on the side of the slide rod 202b, the trapezoidal cavity 202b-2 is arranged at the end of the slide rod 202b, the transition cavity 202b-4 is connected to the trapezoidal cavity 202b-2, the hollow cavity 202b-5 is arranged at the top of the transition cavity 202b-4, and the snap-fit ​​cavity 202b-3 is arranged at the top of the slide rod 202b.

[0036] In combination with the first embodiment, the inner cavity 101a provides space for the clamp rod 202 to move, and the center hole 102a facilitates the pull rod of the external cylinder to extend into the inner cavity 101a to connect with the fixed thread 202c at the end of the clamp rod 202, so that the clamp rod 202 generates tension. The trapezoidal cavity 202b-2 provides space for the movement of the clamp 202a, so that it is tightened when rising to generate clamping force. The offset slide 104a is a three-stage slide structure, which can make the clamping process more delicate and effective. In the previous embodiment, since the material bag is made of flexible material, it does not have rigidity. The characteristics of the flexible material should be considered when grasping, and further adjustments should be made based on the characteristics of the flexible material.

[0037] Furthermore, the offset cylinder 104 is coaxially matched with the rotating cylinder 201, and the offset slide 104a is located on the inner side of the rotating slide groove 201b. Both of them are slidably matched with the sliding head 202b-1. When the clamp rod 202 is pulled up, the sliding head 202b-1 moves along the offset slide 104a, causing the sliding rod 202b to produce three stages of movement, first deflecting and rising, then performing a linear upward movement, and finally completing a deflecting and rising movement. In the first deflecting and rising process, the extrusion plate 202a-1 at the end of the clamp 202a just contacts the material bag, and there is no clamping force at this time, and as the clamp rod 202 is pulled up, the sliding head 202b-1 moves along the offset slide 104a, causing the sliding rod 202b to produce three stages of movement, first performing a deflecting and rising movement, then performing a linear upward movement, and finally completing a deflecting and rising movement. In the first deflecting and rising process, the extrusion plate 202a-1 at the end of the clamp 202a just contacts the material bag, and there is no clamping force at this time, and as the clamp rod 202 With the deflection and rising operation, the grasped part at the end of the bag is first twisted, and then the clamp 202a is slowly tightened. When entering the linear rising movement, the tightening progress of the clamp 202a is accelerated, and the bag is also grasped, and the clamp 202a is squeezed inside the trapezoidal cavity 202b-2 to complete the initial clamping, and then the clamping rod 202 is continued to be pulled to make the slide bar 202b continue to enter the deflection and rising process. The three processes respectively complete the twisting of the grasped part outside the bag, strengthen the clamping force, and finally further twist it, so that the bag obtains the twisting and tightening force, so that the bag can be clamped more firmly.

[0038] Furthermore, the external cylinder is started to pull the clamp rod 202. When the clamp head 202a first completes the twisting, it will perform a certain twisting operation on the initially clamped material bag. At this time, the material bag has not been clamped. The friction force inside the barrel and the twisting force of the clamp head 202a cause the top of the material bag to be twisted. When the material bag is pulled further, the clamp head 202a and the trapezoidal cavity 202b-2 are squeezed, so that the squeezing plate 202a-11 holds the material bag, and the material bag is initially lifted and lifted. When the material bag rises, the sliding head 2 02b-1 first completes the oblique ascending operation in the offset slide 104a. At this time, the external rotating slide 201b matched with the sliding head 202b-1 is rotated, so that the external fork rod 103b and the steering block 103b-3 move relative to each other. Since the first stage of the rotating slide 201b is a vertical groove, the toggling effect at this time has little effect on the rotation of the arc plate 103b-2. At this time, the bag is initially clamped. When the rotating slide 201b enters the second stage, the clamping force and clamping effect are both The material bag is raised evenly. At this time, the sliding head 202b-1 enters the vertical slideway of the offset slideway 104a. At this time, the sliding head 202b-1 does not deflect. In the second stage of the rotating slideway 201b, the material bag rises slowly. Since the rotating slideway 201b does not deflect at this time, the surroundings of the material bag are constrained by the arc plate 103b-2. At this time, the constrained material bag has less axial swing. The rise of the material bag and the clamping of the arc plate 103b-2 are synchronized. The enclosure of the arc plate 103b-2 limits The material bag swings further, and when the clamp rod 202 enters the third stage, the arc plate 103b-2 obtains a larger movement angle, and finally fixes the material bag firmly to form a supporting effect, and cooperates with the internal clamp 202 to create a twisting force on the material bag. The twisting effect enables its outer packaging to produce a more effective sealing effect and a contact volume with the extrusion plate 202a-1, so that it is firmly fixed on the clamp. Due to the external arc plate 103b-2, the material bag does not swing, thereby improving operational safety.

[0039] Example 3

[0040] Reference Figure 1 to Figure 7, which is the third embodiment of the present invention. This embodiment is different from the previous two embodiments in that the separating ring 103 includes a sleeve 103a and a fork rod 103b, the fork rod 103b includes a circular groove 103b-1, an arc plate 103b-2, a steering block 103b-3 and a mounting column 103b-4, the circular groove 103b-1 is arranged at the end of the fork rod 103b, the mounting column 103b-4 is engaged with the sleeve 103a for rotation and sliding cooperation, one long side of the circular groove 103b-1 is slidably cooperated with the steering block 103b-3, the arc plate 103b-2 is arranged on the other long side of the circular groove 103b-1, and the offset cylinder 104 includes an offset slide 104a, the offset slide 104a is arranged on the side of the offset cylinder 104, and the offset slide 104a is a three-section slide structure.

[0041] Furthermore, the movable cylinder 204 is coaxially matched with the sliding rod 202b, and the movable cylinder 204 includes a snap ring 204a, which is slidably snap-fitted with the hollow cavity 202b-5. The spring 203 is arranged in the middle of the inner cavity 101a, and the spring 203 is coaxially matched with the clamping rod 202.

[0042] In combination with the first two embodiments, the offset cylinder 104 is coaxially matched with the rotating cylinder 201, and the offset slide 104a is located on the inner side of the rotating slide groove 201b. Both of them are slidably matched with the sliding head 202b-1. When the clamping rod 202 is pulled up, the sliding head 202b-1 moves along the offset slide 104a, so that the sliding rod 202b produces three stages of movement, first deflection and rising movement, then straight-line rising movement, and finally deflection and rising movement. In the first deflection and rising process, the extrusion plate 202a-1 at the end of the clamp 202a just touches the bag, and there is no clamping force at this time. , and with the deflection and rising operation, the grasped part of the end of the bag first produces a twisting effect, and then the clamp 202a is slowly tightened. When entering the linear rising movement, the tightening progress of the clamp 202a is accelerated, and the bag is also grasped, and the clamp 202a is squeezed and clamped inside the trapezoidal cavity 202b-2, and then the clamping rod 202 is continued to be pulled to make the sliding rod 202b continue to enter the deflection and rising process. The three processes respectively complete the twisting of the grasped part outside the bag, strengthen the clamping force, and finally further twist it, so that the bag obtains the twisting and tightening force, so the bag can be clamped more firmly.

[0043] Furthermore, the locking ring 204a of the movable cylinder 204 is slidably engaged with the hollow cavity 202b-5, so that the slide rod 202b and the movable cylinder 204 move synchronously, and the end of the clamping rod 202 is the clamp 202a. When the protrusion on the top of the clamp 202a contacts the bottom of the locking ring 204a, the movable cylinder 204 is pushed to move upward, so the slide rod 202b and the movable cylinder 204 move synchronously, and the internal groove of the locking cavity 202b-3 engages the spring 203, so that the spring 203 is compressed synchronously, providing elastic potential energy for the reset of the device.

[0044] In summary, the material bag is constrained to different degrees in stages by the external arc plate 103b-2, which cooperates with the tightening of the extrusion plate 202a-11 at different stages, and is combined with the rotation and rise of the slide bar 202b at different stages, so that the sealing part of the material bag, that is, the part being grasped, is twisted to a certain extent. After the twisting, the material bag mouth cooperates with the extrusion plate 202a-11 to obtain a more secure clamping effect, and the constraints of the arc plate 103b-2 at different stages can reduce direct friction and extrusion of the material bag, thereby avoiding damage to the material bag.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high temperature gas-cooled reactor fuel ball bag grabbing device, Features: include, A connecting unit (100), the connecting unit (100) comprising a connecting tube (101), an end cover (102), a separation ring (103) and a displacement tube (104), the connecting tube (101) and the displacement tube (104) being respectively arranged on both sides of the separation ring (103), and the other end of the connecting tube (101) being provided with an end cover (102); and, A material taking unit (200), the material taking unit (200) comprises a rotating cylinder (201), a clamping rod (202), a spring (203) and a movable cylinder (204), the rotating cylinder (201) and the offset cylinder (104) are coaxially matched, the clamping rod (202) is arranged inside the rotating cylinder (201), the spring (203) is arranged on the top of the clamping rod (202), and the movable cylinder (204) and the clamping rod (202) are coaxially rotated and slidably matched.

2. The high temperature gas-cooled reactor fuel ball bag grabbing device according to claim 1, Features: The connecting tube (101) comprises an inner cavity (101a), wherein the inner cavity (101a) is used to place a clamping rod (202); the end cover (102) comprises a central hole (102a), wherein the central hole (102a) is coaxially matched with the clamping rod (202).

3. The high temperature gas-cooled reactor fuel ball bag grabbing device according to claim 1 or 2, Features: The separation ring (103) comprises a sleeve (103a) and a fork rod (103b); the fork rod (103b) comprises a circular groove (103b-1), an arc plate (103b-2), a steering block (103b-3) and a mounting column (103b-4); the circular groove (103b-1) is arranged at the end of the fork rod (103b); the mounting column (103b-4) is engaged with the sleeve (103a) in a rotational and sliding manner; one long side of the circular groove (103b-1) is slidably matched with the steering block (103b-3); and the arc plate (103b-2) is arranged at the other long side of the circular groove (103b-1).

4. The high temperature gas-cooled reactor fuel ball bag grabbing device according to claim 3, Features: The offset cylinder (104) comprises an offset slideway (104a), wherein the offset slideway (104a) is arranged on the side of the offset cylinder (104), and the offset slideway (104a) is a three-section slideway structure.

5. The high temperature gas-cooled reactor fuel ball bag grabbing device according to any one of claims 1, 2 or 4, Features: The rotating cylinder (201) comprises side protrusions (201a) and a rotating slide groove (201b); the side protrusions (201a) are arranged in an array at the bottom of the rotating cylinder (201); the rotating slide groove (201b) is arranged on the side of the rotating cylinder (201); and the rotating slide groove (201b) is a two-stage structure.

6. The high temperature gas-cooled reactor fuel ball bag grabbing device according to claim 5, Features: The clamping rod (202) comprises a clamp (202a), a slide rod (202b) and a fixing thread (202c), wherein the fixing thread (202c) is arranged at the top of the clamping rod (202), the clamp (202a) is arranged at the bottom of the clamping rod (202), and the slide rod (202b) is coaxially slidably matched with the movable cylinder (204).

7. The high temperature gas-cooled reactor fuel ball bag grabbing device according to claim 6, Features: The clamp (202a) comprises an extrusion plate (202a-1) and a transverse groove (202a-2); the extrusion plate (202a-1) is arranged at the end of the clamp (202a); the transverse groove (202a-2) is arranged at the middle part of the inner side of the clamp rod (202); a sliding ball (202a-11) is arranged at the top of the extrusion plate (202a-1); the sliding ball (202a-11) is slidably matched with the transverse groove (202a-2).

8. The high temperature gas-cooled reactor fuel ball bag grabbing device according to claim 7, Features: The sliding rod (202b) comprises a sliding head (202b-1), a trapezoidal cavity (202b-2), a snap-fit ​​cavity (202b-3), a transition cavity (202b-4) and a hollow cavity (202b-5); the sliding head (202b-1) is arranged on the side of the sliding rod (202b); the trapezoidal cavity (202b-2) is arranged at the end of the sliding rod (202b); the transition cavity (202b-4) is connected to the trapezoidal cavity (202b-2); the hollow cavity (202b-5) is arranged at the top of the transition cavity (202b-4); and the snap-fit ​​cavity (202b-3) is arranged at the top of the sliding rod (202b).

9. The high temperature gas-cooled reactor fuel ball bag grabbing device according to claim 8, Features: The movable cylinder (204) is coaxially matched with the sliding rod (202b), and the movable cylinder (204) comprises a snap ring (204a), and the snap ring (204a) is slidably snap-fitted with the hollow cavity (202b-5).

10. The high temperature gas-cooled reactor fuel ball bag grabbing device according to any one of claims 7 to 9, Features: The spring (203) is arranged in the middle of the inner cavity (101a), and the spring (203) is coaxially matched with the clamping rod (202).

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