Lifting appliance for large hanging basket and solid neutron poison
By designing the sliding blocks, jaws and shafts, the existing spreaders have been solved, and the problems of difficulty in maintenance, frequent failures and weak guidance capabilities have been achieved, and the efficient and reliable lifting effect has been achieved, reducing the failure rate and avoiding damage to parts.
Patent Information
- Application Number
- CN202510649871.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-07-18
AI Technical Summary
When lifting large hanging baskets and solid neutron poisons, existing spreaders have problems such as difficulty in maintenance, frequent failures, weak guidance capabilities, and inability to avoid oblique lifting.
A spreader including a slider, a base, a jaw and a shaft is designed. The slider slides through a guide rod, and the jaw is connected to the shaft through a universal coupling, which can control the opening and closing of the jaw, introduce a planar self-dumping mechanism, replace the traditional circular rotating self-dumping mechanism, realize effective lifting and reduce the failure rate.
The structure is simplified, the failure rate is reduced, the timeliness of lifting is ensured, the damage to parts is avoided, and the reliability of lifting is improved.
Smart Images
Figure CN120328337A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of hoisting technology, and particularly relates to a sling for large hanging baskets and solid neutron poisons. Background Art
[0002] The sheared short section of the spent fuel assembly enters the inside of the large hanging basket through the chute of the shearing machine. The large hanging basket extends about 5 meters underground and is of a long cylindrical structure. A lifting head is welded on it for hoisting. Since the large hanging basket is entirely located in a highly radioactive hot cell, hoisting operations rely on self-dumping slings. Due to limited operating visibility, there is often a phenomenon of "skew pulling and slanting hoisting". Moreover, for existing products with self-dumping functions, they often have defects such as complex structures, many vulnerable parts, and weak guiding capabilities. The rest do not have self-dumping functions and require additional assistance for use, which obviously does not meet the current requirements. Summary of the Invention
[0003] The purpose of this application is to provide a sling for large hanging baskets and solid neutron poisons, which solves the problems of difficult maintenance, frequent failures, relatively weak guiding capabilities, and inability to avoid skew hoisting of existing slings.
[0004] Technical solutions to achieve the purpose of this application:
[0005] An embodiment of this application provides a sling for large hanging baskets and solid neutron poisons. The sling includes: a slider, a base, a claw, and a shaft;
[0006] Both sides of the slider are fixed to the upper end surface of the base through a guide rod respectively, and the slider can slide up and down along the guide rod;
[0007] There are multiple claws for clamping the object to be hoisted; the upper ends of the multiple claws are hinged to the lower end surface of the base and are evenly distributed along the base;
[0008] The lower end of the slider is connected to the upper end of the shaft through a universal coupling, and the lower end of the shaft passes through the base and is hinged to the lower ends of the multiple claws through a pull rod for controlling the opening and closing of the claws.
[0009] Optionally, the sling further includes: a rocker arm;
[0010] An annular closed movement guide rail is provided on the side surface of the slider; the lower end of the rocker arm is fixed to the upper end surface of the base and is located on one side of the slider; the upper end of the rocker arm is slidably fixed in the movement guide rail through a guide wheel.
[0011] Optionally, there are two rocker arms;
[0012] Movement guide rails are provided on both side surfaces of the slider, and the two movement guide rails are symmetrically arranged in a mirror image;
[0013] The two rocker arms are respectively located on both sides of the slider, and the lower ends of the rocker arms are slidably fixed in the two movement guide rails through guide wheels respectively.
[0014] Optionally, the sling further includes: a spring;
[0015] The spring is connected between the rocker arm and the base, and the spring is in an initial state when the rocker arm is in the vertical position.
[0016] Optionally, the upper end of the rocker arm is rigidly connected to the guide wheel through a lock nut, and the guide wheel has a thread.
[0017] Optionally, when the claw is in the open position, the pull rod is in the horizontal position.
[0018] Optionally, the sling further includes: a guide block;
[0019] One end of the guide block is fixed to the lower end face of the base, and is used for connecting and guiding the object to be lifted.
[0020] Optionally, a chute is provided in the middle of the guide rod, and support rods are installed on both sides of the slider, and the support rods are slidably fixed in the chute.
[0021] Optionally, there are three claws, and the three claws are evenly arranged at 120° on the lower end face of the base.
[0022] Optionally, a lifting lug is provided at the upper end of the slider.
[0023] The beneficial technical effects of this application are as follows:
[0024] A sling for a large hanging basket and solid neutron poison provided by an embodiment of this application includes: a slider, a base, claws and a shaft; both sides of the slider are respectively fixed to the upper end face of the base through a guide rod, and the slider can slide up and down along the guide rod; there are multiple claws for clamping the object to be lifted; the upper ends of the multiple claws are hinged to the lower end face of the base and are evenly distributed along the base; the lower end of the slider is connected to the upper end of the shaft through a universal coupling, and the lower end of the shaft passes through the base and is hinged to the lower ends of the multiple claws through a pull rod for controlling the opening and closing of the claws. The universal coupling connects the slider and the shaft, and can produce a certain compensation effect when there is a diagonal pulling phenomenon, ensuring effective lifting and reducing the risk of the sling being pulled and damaged. This sling introduces the slider of the planar self-unloading mechanism to replace the traditional circumferential rotation type self-unloading mechanism, simplifies the structure and reduces the failure rate at the same time. This sling has no obvious vulnerable parts, can effectively reduce the failure rate during use, and ensure the timeliness of the large hanging basket lifting. Description of the Drawings
[0025] Figure 1 It is a schematic structural diagram of a sling for a large hanging basket and solid neutron poison provided by an embodiment of this application;
[0026] Figure 2 It is a schematic structural diagram of another sling for a large hanging basket and solid neutron poison provided by an embodiment of this application;
[0027] Figure 3 This is a lifting schematic diagram of a lifting tool for a large hanging basket and solid neutron poison provided by an embodiment of the present application.
[0028] In the figure:
[0029] 1 - slider; 2 - guide wheel; 3 - rocker arm; 4 - lock nut; 5 - guide rod; 6 - base; 7 - guide block; 8 - claw; 9 - pull rod; 10 - universal coupling; 11 - shaft; 12 - spring; 13 - motion guide rail. Specific embodiments
[0030] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the embodiments described below are only a part of the embodiments of the present application, rather than all of them. Based on the embodiments recorded in the present application, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of protection of the present application.
[0031] See Figure 1 , which is a structural schematic diagram of a lifting tool for a large hanging basket and solid neutron poison provided by an embodiment of the present application.
[0032] A lifting tool for a large hanging basket and solid neutron poison provided by an embodiment of the present application includes: a slider 1, a base 6, a claw 8 and a shaft 11;
[0033] Both sides of the slider 1 are respectively fixed on the upper end surface of the base 6 through a guide rod 10, and the slider 1 can slide up and down along the guide rod 5;
[0034] There are multiple claws 8 for clamping the object to be lifted; the upper ends of the multiple claws 8 are hinged to the lower end surface of the base 6 and are evenly distributed along the base 6;
[0035] The lower end of the slider 1 is connected to the upper end of the shaft 11 through a universal coupling 10, and the lower end of the shaft 11 passes through the base 6 and is hinged to the lower ends of the multiple claws 8 through a pull rod 9 for controlling the opening and closing of the claws 8.
[0036] It can be understood that both ends of the claw 8 can rotate around the base 6 and the pull rod 9 respectively to realize the opening and closing of the claw 8.
[0037] In the embodiment of the present application, the grasping and separation of the lifting tool are both realized through the linkage between the slider 1 and the claw 8 under the action of gravity. The combination and opening of the lifting tool and the object to be lifted, such as the lifting head of the large hanging basket, are controlled by the position of the slider 1. When the slider 1 is at the uppermost end of the guide rod 10, the claw 8 is in the open position; when the slider 1 is at the lowermost end of the guide rod 10, the claw 8 is in the retracted position, as Figure 2As shown, when the jaw 8 is in the open position, it clamps the object to be lifted, such as Figure 3 As shown, so as to realize lifting. When there is an inclined lifting situation during hoisting, the provided universal coupling 10 can compensate for the angular difference generated by hoisting, thus ensuring the installation hoisting and preventing the components from being damaged. The universal coupling 10 connects the slider 1 and the shaft 11. When there is an inclined pulling phenomenon, it can produce a certain compensation effect, ensuring effective hoisting and reducing the risk of the sling being damaged.
[0038] As an example, there can be three jaws 8, and the three jaws 8 are evenly arranged at 120° on the lower end surface of the base 6.
[0039] It can be understood that the three jaws 8 are evenly distributed at 120°, and the pull rod 9 and the base 6 are connected by a pin shaft. From the pull rod 9, it is connected to the shaft 11 through a pin shaft, and a universal coupling 10 is connected between the shaft 11 and the slider 1.
[0040] In one example, a lifting lug for hoisting is provided at the upper end of the slider 1.
[0041] In some possible implementation manners of the embodiments of the present application, the lifting tool may further include: a rocker arm 3;
[0042] An annular closed motion guide rail 13 is provided on the side surface of the slider 1; the lower end of the rocker arm 3 is fixed to the upper end surface of the base 6 and is located on one side of the slider 1; the upper end of the rocker arm 3 is slidably fixed in the motion guide rail 13 through a guide wheel 2.
[0043] It should be noted that the lower end of the rocker arm 3 is hinged to the base 6, so that the lower end of the rocker arm 3 can only rotate around the hinge point. In specific implementation, the motion guide rail 13 has a certain curvature to ensure that during the up and down movement of the slider 1, the guide wheel 2 makes a circular-like motion along the provided motion trajectory of it.
[0044] It can be understood that during the up and down movement of the slider 1, the opening and closing of the jaw 8 are realized by the combination of the upper and lower limit positions of the motion guide rail 13 of it on the guide wheel 2, so as to further realize the combination and disengagement of the object to be lifted. As Figure 1 and Figure 2 As shown, when the guide wheel 2 is at the upper dead center of the motion guide rail 13, the jaw 8 is in the open position. When the guide wheel 2 is at the lower dead center of the motion guide rail 13, the jaw 8 is in the retracted position. The opening and retraction of the jaw 8 are realized by the linkage of the shaft 11, the pull rod 9, and the jaw 8.
[0045] In one example, there can be two rocker arms 3;
[0046] Motion guide rails 13 are provided on both side surfaces of the slider 1, and the two motion guide rails 13 are arranged symmetrically in a mirror image;
[0047] The two rocker arms 3 are respectively located on both sides of the slider 1, and the lower ends of the rocker arms 3 are respectively slidably fixed in the two moving guide rails 13 through the guide wheels 2.
[0048] In another example, the sling may further include: a spring 12;
[0049] The spring 12 is connected between the rocker arm 3 and the base 6, and the spring 12 is in an initial state when the rocker arm 3 is in the vertical position.
[0050] It can be understood that the spring 12 is in the initial position when the rocker arm 3 is in the vertical position. Therefore, it can provide a certain support when the rocker arm 3 is in the vertical position, and at the same time provide a pulling force in the moving direction during the movement of the rocker arm 3 to ensure that the rocker arm 3 moves along the predetermined position.
[0051] In a specific example, the upper end of the rocker arm 3 can be rigidly connected to the guide wheel 2 through a locking nut 4, and the guide wheel 2 can have threads.
[0052] During specific implementation, when the claw 8 is in the open position, the pull rod 9 can be in the horizontal position, which improves the rigidity of the actuator and avoids plastic deformation of the components caused by oblique lifting.
[0053] In some possible implementation manners of the embodiments of the present application, the sling may further include: a guide block 7;
[0054] One end of the guide block 7 is fixed to the lower end surface of the base 6 and is used for connecting and guiding the object to be lifted.
[0055] In one example, there are three guide blocks 7, and the three guide rods 7 are distributed at 120°.
[0056] In some possible implementation manners of the embodiments of the present application, a chute may be provided in the middle of the guide rod 10, and support rods may be installed on both sides of the slider 1, and the support rods are slidably fixed in the chute to limit the sliding trajectory of the slider 1.
[0057] A sling for a large hanging basket and solid neutron poison provided by an embodiment of the present application includes: a slider, a base, a claw and a shaft; both sides of the slider are fixed to the upper end surface of the base through a guide rod respectively, and the slider can slide up and down along the guide rod; there are multiple claws for clamping the object to be lifted; the upper ends of the multiple claws are hinged to the lower end surface of the base and are evenly distributed along the base; the lower end of the slider is connected to the upper end of the shaft through a universal coupling, and the lower end of the shaft passes through the base and is hinged to the lower ends of the multiple claws through a pull rod for controlling the opening and closing of the claws. The universal coupling connects the slider and the shaft, and can produce a certain compensation effect when there is a diagonal pulling phenomenon, ensuring effective lifting and reducing the risk of the sling being damaged by pulling. This sling introduces a slider of a planar self-unloading mechanism to replace the traditional circumferential rotation self-unloading mechanism, simplifies the structure and reduces the failure rate at the same time. This sling has no obvious vulnerable parts, can effectively reduce the failure rate during use, and ensure the timeliness of the large hanging basket lifting.
[0058] The above has described the present application in detail with reference to the drawings and embodiments. However, the present application is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present application. The content not described in detail in the present application can all adopt the prior art.
Claims
1. A sling for large hanging baskets and solid neutron poisons, characterized in that, The sling includes: a slider (1), a base (6), a claw (8) and a shaft (11); Both sides of the slider (1) are respectively fixed to the upper end surface of the base (6) through a guide rod (10), and the slider (1) can slide up and down along the guide rod (5); There are multiple claws (8) for clamping the object to be lifted; the upper ends of the multiple claws (8) are hinged to the lower end surface of the base (6) and are evenly distributed along the base (6); The lower end of the slider (1) is connected to the upper end of the shaft (11) through a universal coupling (10), and the lower end of the shaft (11) passes through the base (6) and is hinged to the lower ends of the multiple claws (8) through a pull rod (9) for controlling the opening and closing of the claws (8).
2. The spreader for large hanging baskets and solid neutron poisons according to claim 1, characterized in that, The sling further includes: a rocker arm (3); An annular closed movement guide rail (13) is provided on the side surface of the slider (1); the lower end of the rocker arm (3) is fixed to the upper end surface of the base (6) and is located on one side of the slider (1); the upper end of the rocker arm (3) is slidably fixed in the movement guide rail (13) through a guide wheel (2).
3. The spreader for large hanging baskets and solid neutron poisons according to claim 2, characterized in that, There are two rocker arms (3); Movement guide rails (13) are provided on both side surfaces of the slider (1), and the two movement guide rails (13) are arranged symmetrically; The two rocker arms (3) are respectively located on both sides of the slider (1), and the lower ends of the rocker arms (3) are respectively slidably fixed in the two movement guide rails (13) through guide wheels (2).
4. The spreader for large hanging baskets and solid neutron poisons according to claim 2, characterized in that, The sling further includes: a spring (12); The spring (12) is connected between the rocker arm (3) and the base (6), and the spring (12) is in an initial state when the rocker arm (3) is in a vertical position.
5. The spreader for large hanging baskets and solid neutron poisons according to claim 2, characterized in that, The upper end of the rocker arm (3) is rigidly connected to the guide wheel (2) through a locking nut (4), and the guide wheel (2) has threads.
6. The sling for large hanging baskets and solid neutron poisons according to any one of claims 1-5, characterized in that, When the claw (8) is in an open position, the pull rod (9) is in a horizontal position.
7. The spreader for large hanging baskets and solid neutron poisons according to any one of claims 1-5, characterized in that, The sling further includes: a guide block (7); One end of the guide block (7) is fixed to the lower end surface of the base (6) for connecting and guiding the object to be lifted.
8. The sling for large hanging baskets and solid neutron poisons according to any one of claims 1-5, characterized in that, A chute is provided in the middle of the guide rod (10), and support rods are installed on both sides of the slider (1), and the support rods are slidably fixed in the chute.
9. The spreader for large hanging baskets and solid neutron poisons according to any one of claims 1-5, characterized in that, There are three claws (8), and the three claws (8) are evenly arranged at 120° on the lower end surface of the base (6).
10. The spreader for large hanging baskets and solid neutron poisons according to any one of claims 1-5, characterized in that, A lifting lug is provided at the upper end of the slider (1).