Anti-falling hoisting device, crane and hoisting method of radioactive equipment

Abstract

The invention discloses an anti-falling hoisting device, a crane and a hoisting method of radioactive equipment, by guiding a hoisting tool, the hoisting tool keeps the stability of a heavy object when hoisting the heavy object, and the hoisting tool can be lifted when the descending speed of the hoisting tool is greater than the preset speed to prevent the heavy object from falling. The anti-falling lifting device comprises a long-distance hanging sling (1), a guide assembly (3) and an anti-falling assembly (2). And the long-distance hanging lifting appliance (1) is connected with a crane and is used for lifting a heavy object. And the guide assembly (3) is connected with the long-distance hanging lifting appliance (1) and is used for guiding the long-distance hanging lifting appliance (1) when the long-distance hanging lifting appliance (1) ascends and descends. The anti-falling assembly (2) is connected with the guiding assembly (3) and used for being driven by the guiding assembly (3) to ascend and descend and lifting the long-distance hanging and connecting lifting appliance (1) when the descending speed of the long-distance hanging and connecting lifting appliance (1) is larger than the preset speed so that the long-distance hanging and connecting lifting appliance (1) can stop descending.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear chemical industry, and in particular relates to a falling prevention hoisting device, a crane and a hoisting method for radioactive equipment. Background Art

[0002] For parts that need to be repaired in special environments (such as reprocessing plants in the nuclear chemical industry), it is impossible to directly repair and disassemble them by personnel, especially large-sized and heavy parts, which need to be lifted out of the special environment before repair. At the same time, parts that need to be repaired in special environments have high safety requirements, and the equipment must be kept stable during the lifting process.

[0003] Existing ordinary cranes usually use ropes and hooks to lift parts that need to be repaired. The parts that need to be repaired are prone to swinging during the lifting process, and there is a risk of the rope breaking after long-term use. When the rope breaks, it will cause the object to fall and be damaged.

[0004] Therefore, how to ensure the stability of the parts to be repaired during the lifting process and prevent them from falling is a problem that needs to be solved at present. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art and to provide a fall-proof lifting device, a crane and a lifting method for radioactive equipment. The lifting device is guided to keep the heavy object stable when the lifting device is lifting the heavy object, and the lifting device can be lifted when the lifting device falls at a speed greater than a preset speed to prevent the heavy object from falling.

[0006] In a first aspect, an embodiment of the present invention provides an anti-falling lifting device, which includes a long-distance hanging sling, a guide assembly and an anti-falling assembly. The long-distance hanging sling is connected to a crane and is used to lift heavy objects. The guide assembly is connected to the long-distance hanging sling and is used to guide the long-distance hanging sling when the long-distance hanging sling is raised or lowered. The anti-falling assembly is connected to the guide assembly and is used to be raised or lowered under the drive of the guide assembly, and when the descending speed of the long-distance hanging sling is greater than a preset speed, the long-distance hanging sling is lifted to stop the long-distance hanging sling from descending.

[0007] In some embodiments, the guide assembly includes a first guide rail and a connector. The first guide rail is fixed on the first reference plane and arranged in the vertical direction. The connector is slidably arranged on the first guide rail and connected to the remote hanging sling to be lifted and lowered under the drive of the remote hanging sling and guide the remote hanging sling.

[0008] In some embodiments, the anti-falling assembly includes a second guide rail, a support plate and an anti-falling structure. The second guide rail is fixed on the second reference plane and is arranged parallel to the first guide rail. The support plate is slidably arranged on the second guide rail, and a part of the support plate extends directly below the remote hanging sling, and the support plate can lift the remote hanging sling; the support plate is connected to the connecting member to be lifted and lowered along the second guide rail under the drive of the connecting member. The anti-falling structure includes a centrifugal speed limiter and a safety clamp. The centrifugal speed limiter is fixed on the top of the second guide rail, and the steel wire rope of the centrifugal speed limiter is connected to the support plate and the safety clamp respectively, so as to detect the descending speed of the support plate through the steel wire rope, and drive the safety clamp to operate through the steel wire rope when the descending speed of the support plate is greater than the preset speed; the safety clamp is fixed on the support plate, and is used to clamp the second guide rail and self-lock when operating, so that the support plate stops descending, thereby lifting the remote hanging sling through the support plate, so that the remote hanging sling stops descending.

[0009] In some embodiments, the guide assembly further comprises a slide rail, the slide rail is slidably disposed on the first guide rail, the length of the slide rail is greater than the length of the connecting member, the connecting member is fixed on the slide rail, and the support plate is connected to the connecting member via the slide rail.

[0010] In some embodiments, the long-distance hanging sling includes a frame, a telescopic hook and a plurality of zippers. The frame is used to lift heavy objects; the connecting member is connected to the frame; a portion of the support plate extends directly below the frame to lift the frame. The first end of the telescopic hook is fixed to the center of the frame, and the second end is connected to the crane. The first ends of the plurality of zippers are connected to the second ends of the telescopic hook, and the second ends of the plurality of zippers are respectively connected to the edges of the frame.

[0011] In some embodiments, the connecting member is provided with a connecting hole, and the connecting hole is arranged toward the long-distance hanging sling. The long-distance hanging sling is provided with a transverse hook and a transverse operating disk; the transverse hook can be inserted into the connecting hole, and the transverse operating disk is in transmission connection with the transverse hook. After the transverse hook is inserted into the connecting hole, rotating the transverse operating disk can drive the transverse hook to rotate, so as to realize the hanging and separation of the transverse hook and the connecting member.

[0012] In some embodiments, the remote hooking sling is further provided with a vertical hook and a vertical operating panel. The vertical hook is provided below the remote hooking sling, and the vertical hook and the vertical operating panel are in transmission connection; rotating the vertical operating panel can drive the vertical hook to rotate, so as to achieve the connection and separation of the vertical hook and the heavy object.

[0013] In some embodiments, the number of the guide components and the anti-falling components are both two, and the two are arranged in pairs, and the two pairs of the guide components and the anti-falling components are arranged on the same side of the long-distance hanging sling.

[0014] Therefore, the anti-fall lifting device in the embodiment of the present invention can lift the heavy object after the long-distance hanging sling is connected to the crane by setting the long-distance hanging sling; can guide the long-distance hanging sling when it is lifted or lowered by setting the guide component and connecting the guide component to the long-distance hanging sling, so as to reduce or avoid the displacement of the long-distance hanging sling in the horizontal direction, reduce or avoid the shaking of the long-distance hanging sling, so that the long-distance hanging sling can be kept stable when it is lifted or lowered, thereby keeping the heavy object stable and keeping the heavy object stable when the long-distance hanging sling is lifting or lowering; The anti-fall component can lift the long-distance hanging sling when the descending speed of the long-distance hanging sling is greater than the preset speed, so that the long-distance hanging sling stops descending, thereby preventing the heavy objects hoisted on the long-distance hanging sling from falling and being damaged; by connecting the anti-fall component with the guide component and being able to rise and fall under the drive of the guide component, and the guide component is connected to the long-distance hanging sling, the anti-fall component can follow the long-distance hanging sling to rise and fall, avoiding the distance between the anti-fall component and the long-distance hanging sling being too far to affect the timeliness of the anti-fall component lifting the long-distance hanging sling.

[0015] In a second aspect, an embodiment of the present invention further provides a crane, comprising a crane body and the anti-falling lifting device in the first aspect. The crane body has a lifting hook that can be raised and lowered. The lifting hook of the crane body is connected to a remote hanging sling of the anti-falling lifting device, so that the remote hanging sling is driven to be raised and lowered through the lifting hook.

[0016] In a third aspect, an embodiment of the present invention further provides a method for lifting radioactive equipment, which uses the anti-fall lifting device in the first aspect, and comprises: connecting a crane to a remote hanging sling of the anti-fall lifting device; the crane drives the remote hanging sling down to the radioactive equipment, and hangs the remote hanging sling on the radioactive equipment; the crane drives the remote hanging sling up to the target position, and separates the remote hanging sling from the radioactive equipment.

[0017] The crane and the method for lifting radioactive equipment provided by the embodiments of the present invention have the same beneficial effects as the above-mentioned anti-fall lifting device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 : A structural diagram of a fall prevention and lifting device provided by an embodiment of the present invention;

[0019] Figure 2 : A structural diagram of a guide assembly provided in an embodiment of the present invention;

[0020] Figure 3 : A structural diagram of an anti-falling assembly provided by an embodiment of the present invention;

[0021] Figure 4 : A partial structural diagram of a fall prevention and lifting device provided by an embodiment of the present invention;

[0022] Figure 5 : A structural diagram of a long-distance hanging sling provided by an embodiment of the present invention;

[0023] Figure 6 : A structural diagram of a transverse hook and a transverse operating disk provided in an embodiment of the present invention;

[0024] Figure 7 : A structural diagram of a vertical hook and a vertical operating panel provided in an embodiment of the present invention.

[0025] Among them, 1-long-distance hanging sling; 2-anti-fall component; 3-guide component; 4-telescopic hook; 5-zipper; 6-frame; 7-vertical hook; 8-horizontal hook; 9-vertical operating panel; 10-horizontal operating panel; 11-first guide rail; 12-slide rail; 13-connector; 14-second guide rail; 15-support plate; 16-anti-fall structure; 17-second positioning rod. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Embodiment 1:

[0028] like Figure 1 As shown, an embodiment of the present invention provides an anti-falling lifting device, which is applied in a lifting process to lift heavy objects after being connected to a crane.

[0029] like Figure 1 As shown, the anti-fall lifting device includes a long-distance hanging sling 1, a guide assembly 3 and an anti-fall assembly 2. The long-distance hanging sling 1 is connected to the crane and is used to lift heavy objects. The guide assembly 3 is connected to the long-distance hanging sling 1 and is used to guide the long-distance hanging sling 1 when the long-distance hanging sling 1 is raised or lowered. The anti-fall assembly 2 is connected to the guide assembly 3 and is used to rise and fall under the drive of the guide assembly 3, and when the descending speed of the long-distance hanging sling 1 is greater than the preset speed, the long-distance hanging sling 1 is lifted to stop the long-distance hanging sling 1 from descending.

[0030] Exemplarily, the upper end of the long-distance hanging sling 1 is connected to the hook of the crane, and the lower end of the long-distance hanging sling 1 is hung to the heavy object.

[0031] After the lower end of the long-distance hanging sling 1 is hung with the heavy object, the long-distance hanging sling 1 can be hoisted by the hook of the crane to drive the heavy object to move through the long-distance hanging sling 1.

[0032] Exemplarily, the guide assembly 3 is located at one side of the long-distance hooking sling 1 to prevent the guide assembly 3 from affecting the lifting and lowering of the long-distance hooking sling 1 .

[0033] Exemplarily, the long-distance hanging sling 1 is in the shape of a rectangle, and the guide assembly 3 is located on one side of any long side of the long-distance hanging sling 1 , or the guide assembly 3 may also be located on one side of any short side of the long-distance hanging sling 1 .

[0034] After the guide component 3 guides the long-distance hanging sling 1, it can reduce or avoid the horizontal displacement of the long-distance hanging sling 1 when the long-distance hanging sling 1 is raised or lowered, thereby reducing or avoiding the shaking of the long-distance hanging sling 1, so that the long-distance hanging sling 1 remains stable when it is raised or lowered, thereby maintaining the stability of the heavy object, and also making the long-distance hanging sling 1 stable when lifting the heavy object.

[0035] Exemplarily, the anti-falling assembly 2 and the guide assembly 3 are located on the same side of the long-distance hanging sling 1 to facilitate the connection between the anti-falling assembly 2 and the guide assembly 3 .

[0036] It can be understood that when the long-distance hook sling 1 is lifting heavy objects, if the long-distance hook sling 1 falls due to an unexpected situation (such as the rope breaks, the crane and the long-distance hook sling 1 are unhooked), the descent speed of the long-distance hook sling 1 will increase to a speed greater than the maximum speed of the crane during normal descent.

[0037] For example, different cranes have different maximum speeds when they descend normally. The preset speed in this application can be flexibly set according to the maximum speeds of the cranes when they descend normally. In theory, the preset speed in this application can be greater than the maximum speed of the cranes when they descend normally.

[0038] Exemplarily, the preset speed can be set to 110% of the maximum speed of the crane during normal descent to reduce the possibility that the anti-fall component 2 may perform abnormal lifting of the long-distance hanging sling 1 due to accidental errors when the long-distance hanging sling 1 is descending normally, thereby affecting the normal lifting of heavy objects.

[0039] The anti-falling component 2 in this embodiment can lift the long-distance hanging sling 1 when the descending speed of the long-distance hanging sling 1 is greater than the preset speed, so that the long-distance hanging sling 1 stops descending, thereby preventing the heavy objects hung on the long-distance hanging sling 1 from falling and being damaged.

[0040] The anti-fall component 2 is connected to the guide component 3, and can be raised and lowered under the drive of the guide component 3, and the guide component 3 is connected to the long-distance hanging sling 1, so that the anti-fall component 2 can follow the long-distance hanging sling 1 to rise and fall, avoiding the anti-fall component 2 and the long-distance hanging sling 1. The distance between the anti-fall component 2 and the long-distance hanging sling 1 is too far and affects the timeliness of the anti-fall component 2 to lift the long-distance hanging sling 1.

[0041] Therefore, the anti-falling lifting device in the embodiment of the present invention can lift the heavy object after the long-distance hanging sling 1 is connected to the crane by setting the long-distance hanging sling 1; by setting the guide component 3 and connecting the guide component 3 to the long-distance hanging sling 1, the long-distance hanging sling 1 can be guided when the long-distance hanging sling 1 is lifted or lowered, which can reduce or avoid the displacement of the long-distance hanging sling 1 in the horizontal direction, reduce or avoid the shaking of the long-distance hanging sling 1, so that the long-distance hanging sling 1 can be kept stable when it is lifted or lowered, thereby keeping the heavy object stable and keeping the heavy object stable when the long-distance hanging sling 1 lifts the heavy object; by setting the anti-falling component 2. When the descending speed of the long-distance hanging sling 1 is greater than the preset speed, the anti-falling component 2 can lift the long-distance hanging sling 1 to stop the long-distance hanging sling 1 from descending, thereby preventing the heavy objects hung on the long-distance hanging sling 1 from falling and being damaged; by connecting the anti-falling component 2 with the guide component 3 and being able to rise and fall under the drive of the guide component 3, and the guide component 3 is connected to the long-distance hanging sling 1, the anti-falling component 2 can follow the rise and fall of the long-distance hanging sling 1, thereby preventing the distance between the anti-falling component 2 and the long-distance hanging sling 1 from being too far to affect the timeliness of the anti-falling component 2 lifting the long-distance hanging sling 1.

[0042] In some embodiments, in combination Figure 1 and Figure 2 The guide assembly 3 includes a first guide rail 11 and a connector 13. The first guide rail 11 is fixed to the first reference plane and arranged in the vertical direction. The connector 13 is slidably arranged on the first guide rail 11 and connected to the long-distance hanging sling 1 to be lifted and lowered under the drive of the long-distance hanging sling 1 and guide the long-distance hanging sling 1.

[0043] Exemplarily, the first reference plane is a fixed plane in a factory building, used to support the first guide rail 11 , for example, the first reference plane is the ground or a horizontal plane.

[0044] The connecting member 13 can move up and down along the first guide rail 11, and because the connecting member 13 is connected to the long-distance hanging sling 1, when the long-distance hanging sling 1 is lifted or lowered by the crane, the connecting member 13 can be driven to move up and down along the first guide rail 11. When the connecting member 13 moves up and down, the horizontal displacement of the long-distance hanging sling 1 is limited, the shaking of the long-distance hanging sling 1 is reduced or avoided, and the long-distance hanging sling 1 is kept stable during lifting or lowering, thereby keeping the heavy object stable.

[0045] In some embodiments, in combination Figure 1 , Figure 3 and Figure 4 The anti-fall assembly 2 includes a second guide rail 14, a support plate 15 and an anti-fall structure 16. The second guide rail 14 is fixed on the second reference plane and is arranged parallel to the first guide rail 11. The support plate 15 is slidably arranged on the second guide rail 14, and a part of the support plate 15 extends directly below the long-distance hanging sling 1, and the support plate 15 can lift the long-distance hanging sling 1. The support plate 15 is connected to the connecting member 13 so as to be raised and lowered along the second guide rail 14 driven by the connecting member 13. The anti-fall structure 16 includes a centrifugal speed limiter and a safety clamp. The centrifugal speed limiter is fixed on the top of the second guide rail 14, and the wire rope of the centrifugal speed limiter is respectively connected to the support plate 15 and the safety clamp to detect the descending speed of the support plate 15 through the wire rope, and drive the safety clamp to operate through the wire rope when the descending speed of the support plate 15 is greater than the preset speed. The safety clamp is fixed on the support plate 15, and is used to clamp the second guide rail 14 and self-lock when in action, so that the support plate 15 stops descending, thereby lifting the long-distance hanging sling 1 through the support plate 15, so that the long-distance hanging sling 1 stops descending.

[0046] Exemplarily, the second reference plane is a fixed plane in a factory building, used to support the first guide rail 11 , for example, the second reference plane is the ground or a horizontal plane.

[0047] Exemplarily, the second reference plane and the first reference plane may be the same reference plane.

[0048] Exemplarily, the second guide rail 14 is disposed along the vertical direction.

[0049] For example, Figure 4 As shown, when the long-distance hanging sling 1 drives the connecting member 13 to rise and fall, the support plate 15 is synchronously lifted and lowered along the second guide rail 14 driven by the connecting member 13 to improve the timeliness of the support plate 15 when hanging the long-distance hanging sling 1.

[0050] It should be noted that the working principle of the centrifugal speed limiter and safety clamp in the anti-fall structure 16 is the same as the working principle of the "speed limiter-safety clamp system" in the elevator device.

[0051] Exemplarily, the steel wire rope of the centrifugal speed limiter is connected to the support plate 15. When the long-distance hanging sling 1 drives the support plate 15 to rise and fall synchronously, the support plate 15 drives the steel wire rope to move and drives the rotating part (usually a flywheel) of the centrifugal speed limiter to rotate. A centrifugal block is provided on the rotating part of the centrifugal speed limiter.

[0052] The increase in the descending speed of the long-distance hanging sling 1 will drive the speed of the wire rope to increase, the speed of the rotating parts of the centrifugal speed limiter to increase, and the centrifugal force on the centrifugal block to increase.

[0053] When the descending speed of the long-distance hanging sling 1 is greater than the preset speed, the centrifugal block is activated due to the excessive centrifugal force, so that the centrifugal speed limiter drives the safety clamp to operate through the wire rope.

[0054] Exemplarily, the safety clamp includes two wedge structures. The two wedge structures are fixed on the support plate 15, and the two wedge structures are located on both sides of the second guide rail 14. When the safety clamp is actuated, the two wedge structures clamp the second guide rail 14, so that the support plate 15 stops moving due to the increased friction between the safety clamp and the second guide rail 14.

[0055] By setting up the anti-fall structure 16, the descending speed of the support plate 15 can be detected, and the safety clamp will be activated when the descending speed is greater than the preset speed, so that the support plate 15 stops descending and then lifts the long-distance hanging sling 1 to prevent the heavy objects on the long-distance hanging sling 1 from falling.

[0056] In some embodiments, the guide assembly 3 further includes a slide rail 12, which is slidably disposed on the first guide rail 11, and the length of the slide rail 12 is greater than the length of the connector 13. The connector 13 is fixed on the slide rail 12, and the support plate 15 is connected to the connector 13 through the slide rail 12.

[0057] For example, Figure 2 As shown, the slide rail 12 is connected to the first guide rail 11 via a pulley.

[0058] Exemplarily, there are multiple pulleys. The pulley is fixed on the slide rail 12, and the wheel surface of the pulley is in contact with the first guide rail 11.

[0059] Through the above arrangement, the force applied by the long-distance hooking sling 1 to the connecting member 13 can be dispersed to the first guide rail 11 through the longer slide rail 12. In addition, the longer slide rail 12 has a stronger guiding ability and can better guide the long-distance hooking sling 1 through the connecting member 13.

[0060] In some embodiments, Figure 5As shown, the long-distance hanging sling 1 includes a frame 6, a telescopic hook 4 and a plurality of zippers 5. The frame 6 is used to lift heavy objects. A connecting member 13 is connected to the frame 6. A portion of the support plate 15 extends directly below the frame 6 to lift the frame 6. The first end of the telescopic hook 4 is fixed to the center of the frame 6, and the second end is connected to the crane. The first ends of the plurality of zippers 5 are connected to the second ends of the telescopic hook 4, and the second ends of the plurality of zippers 5 are respectively connected to the edges of the frame 6.

[0061] Exemplarily, the frame 6 is in a rectangular shape. There are four zippers 5 , and the second ends of the four zippers 5 are connected to the four corners of the frame 6 respectively.

[0062] For example, Figure 5 As shown, a ring is provided at the top of the telescopic hook 4 to facilitate connection with the hook of a crane.

[0063] When the telescopic hook 4 is not connected to the hook of the crane, the telescopic hook 4 will retract due to gravity, and the second end of the retracted telescopic hook 4 will automatically fall to the center of the long-distance hanging sling 1; when the telescopic hook 4 is connected to the hook of the crane and hoisted, the telescopic hook 4 will extend due to the tension, and because the telescopic hook 4 can only be extended and retracted up and down, it can be ensured that the second end of the telescopic hook 4 is always located at the center of the long-distance hanging sling 1, so that the hook of the crane will always be in the center of the long-distance hanging sling 1 during the process of hoisting the long-distance hanging sling 1, avoiding the horizontal displacement of the hook of the crane and causing the long-distance hanging sling 1 to shake, thereby maintaining the stability of the heavy object hoisted by the long-distance hanging sling 1. Multiple zippers 5 can transmit the tension of the crane hook to each edge of the frame 6, so that each edge of the frame 6 is evenly stressed, further maintaining the stability of the long-distance hanging sling 1.

[0064] In some embodiments, Figure 4 and Figure 5 As shown, a connecting hole is provided on the connecting member 13, and the connecting hole is arranged toward the long-distance hanging sling 1. The long-distance hanging sling 1 is provided with a transverse hook 8 and a transverse operating disk 10. The transverse hook 8 can be inserted into the connecting hole, and the transverse operating disk 10 is transmission-connected with the transverse hook 8. After the transverse hook 8 is inserted into the connecting hole, rotating the transverse operating disk 10 can drive the transverse hook 8 to rotate, so as to realize the hanging and separation of the transverse hook 8 and the connecting member 13.

[0065] For example, Figure 4 and Figure 6 As shown, the shape of the connecting hole is a horizontal long strip, and the shape of the transverse hook 8 is the same as that of the connecting hole, and the size is slightly smaller than the connecting hole.

[0066] Combination Figure 4 and Figure 6 When the transverse hook 8 needs to be connected to the connecting member 13, the transverse hook 8 is passed through the connecting hole and the transverse hook 8 is rotated to a first angle (for example, 90°), so that the positions of the transverse hook 8 and the connecting member 13 can be locked in the horizontal direction to achieve the connection between the transverse hook 8 and the connecting member 13. At this time, the transverse hook 8 can drive the connecting member 13 to rise and fall.

[0067] Combination Figure 4 and Figure 6 When it is necessary to separate the transverse hook 8 from the connecting piece 13, the reverse operation is sufficient. First, the transverse hook 8 is rotated to a first angle to align the transverse hook 8 with the connecting hole, and the transverse hook 8 is passed through the connecting hole to separate the transverse hook 8 from the connecting piece 13.

[0068] Through the above arrangement, the lateral hook 8 and the connecting member 13 can be hooked and separated by rotating the lateral operating plate 10. The lateral operating plate 10 is easy to operate and only needs to be rotated. It can be operated by remote control operation devices such as master-slave manipulators, manipulator arms and power manipulators, so that the hooking and separation of the lateral hook 8 and the connecting member 13 can be operated remotely.

[0069] In some embodiments, Figure 5 and Figure 7 As shown, the long-distance hooking sling 1 is also provided with a vertical hook 7 and a vertical operating panel 9. The vertical hook 7 is arranged below the long-distance hooking sling 1, and the vertical hook 7 and the vertical operating panel 9 are transmission-connected. Rotating the vertical operating panel 9 can drive the vertical hook 7 to rotate, and can achieve the hooking and separation of the vertical hook 7 and the heavy object.

[0070] Exemplarily, a horizontal connection groove is provided on the heavy object, and the vertical hook 7 can extend into the connection groove after being rotated horizontally.

[0071] When the vertical hook 7 needs to be connected to a heavy object, the vertical hook 7 is rotated and extended into the connecting groove to connect the vertical hook 7 to the heavy object in the vertical direction, so that the long-distance hanging sling 1 can drive the heavy object to rise and fall through the vertical hook 7.

[0072] When the vertical hook 7 needs to be separated from the heavy object, the reverse operation is sufficient. After the vertical hook 7 is rotated in the reverse direction, the vertical hook 7 and the heavy object are no longer connected in the vertical direction, thereby achieving separation of the vertical hook 7 and the heavy object.

[0073] Through the above arrangement, the vertical hook 7 and the heavy object can be hooked and separated by rotating the vertical operating disk 9. The vertical operating disk 9 is easy to operate and only needs to be rotated. It can be operated by remote control operation devices such as master-slave manipulators, manipulator arms and power manipulators, so that the hooking and separation of the vertical hook 7 and the heavy object can be operated remotely.

[0074] In some embodiments, Figure 1 As shown, the number of guide components 3 and anti-falling components 2 are both two, and the two are arranged in pairs, and the two pairs of guide components 3 and anti-falling components 2 are arranged on the same side of the long-distance hanging sling 1.

[0075] For example, Figure 1 As shown, the long-distance hanging sling 1 is in the shape of a long strip, and two pairs of guide components 3 and anti-fall components 2 are arranged on one side of the long side of the long-distance hanging sling 1 and are respectively located at the two ends of the long side of the long-distance hanging sling 1.

[0076] Through the above arrangement, the long-distance hanging sling 1 can be guided by the two guide components 3, thereby improving the guiding effect of the long-distance hanging sling 1 and making the long-distance hanging sling 1 evenly stressed; and the long-distance hanging sling 1 can be lifted by the two anti-fall components 2, thereby improving the reliability of the long-distance hanging sling 1 when lifting and making the long-distance hanging sling 1 evenly stressed.

[0077] In some embodiments, in combination Figure 2 The slide rail 12 is provided with a retractable first positioning rod, and the first guide rail 11 is provided with a plurality of first positioning grooves, into which the first positioning rod can extend to position the slide rail 12 and the first guide rail 11 .

[0078] Exemplarily, when the slide rail 12 and the first guide rail 11 need to be temporarily fixed, the first positioning rod can be extended into a first positioning groove.

[0079] The plurality of first positioning grooves can realize the positioning of the slide rail 12 and the first guide rail 11 at different positions.

[0080] Furthermore, the first positioning rod is easy to operate and can be operated by remote control devices such as master-slave manipulators, manipulator arms, and power manipulators, so that the positioning of the slide rail 12 and the first guide rail 11 can be achieved at a long distance.

[0081] In some embodiments, in combination Figure 3 and Figure 4 A retractable second positioning rod 17 is provided on the support plate 15 , and a plurality of second positioning grooves are provided on the second guide rail 14 . The second positioning rod 17 can extend into the second positioning grooves to position the support plate 15 and the second guide rail 14 .

[0082] Exemplarily, when the support plate 15 and the second guide rail 14 need to be temporarily fixed, the second positioning rod 17 can be extended into a second positioning groove.

[0083] The plurality of second positioning grooves can realize the positioning of the support plate 15 and the second guide rail 14 at different positions.

[0084] Furthermore, the second positioning rod is easy to operate and can be operated by remote control devices such as master-slave manipulators, manipulator arms, and power manipulators, so that the positioning of the support plate 15 and the second guide rail 14 can be achieved at a long distance.

[0085] Embodiment 2:

[0086] The embodiment of the present invention further provides a crane which is used in various factories and can lift heavy objects.

[0087] The crane comprises a crane body and the anti-falling lifting device in Example 1. The crane body has a lifting hook that can be raised and lowered. The lifting hook of the crane body is connected to the long-distance hanging sling 1 of the anti-falling lifting device, so that the long-distance hanging sling 1 is driven to rise and fall through the lifting hook.

[0088] Exemplarily, the crane body is a traveling crane commonly used in factories.

[0089] After the hook of the crane body is connected to the long-distance hanging sling 1 of the anti-falling lifting device, the heavy object can be lifted by the long-distance hanging sling 1. In addition, the guide component 3 in the anti-falling lifting device can guide the long-distance hanging sling 1, and the anti-falling component 2 in the anti-falling lifting device can lift the long-distance hanging sling 1 to prevent the heavy object from falling when the descending speed of the long-distance hanging sling 1 is greater than the preset speed, thereby improving the stability of the crane when lifting the heavy object, preventing the heavy object from falling, and improving the safety of the crane, so that the crane can be used in special environments where it is necessary to ensure the stability of the heavy object and prevent the heavy object from falling, such as in the post-processing plant in the nuclear chemical industry.

[0090] Embodiment 3:

[0091] The embodiment of the present invention also provides a method for lifting radioactive equipment, which is applied to a post-processing plant in the field of nuclear chemical industry, and the radioactive equipment may be, for example, a spent fuel assembly. The method for lifting radioactive equipment uses the anti-fall lifting device in embodiment 1, and the method for lifting radioactive equipment includes: S100-S300.

[0092] S100, connecting the crane to the long-distance hanging sling 1 of the anti-fall lifting device.

[0093] Exemplarily, the above-mentioned crane is a traveling crane in a reactor building.

[0094] After the crane is connected to the long-distance hanging sling 1 of the anti-fall lifting device, the crane can drive the long-distance hanging sling 1 to move up and down.

[0095] S200, the crane drives the long-distance hanging sling 1 to descend to the radioactive equipment, and hangs the long-distance hanging sling 1 on the radioactive equipment.

[0096] S300, the crane drives the long-distance hanging sling 1 to rise to the target position, and separates the long-distance hanging sling 1 from the radioactive equipment.

[0097] Because the guide component 3 in the anti-fall lifting device can guide the long-distance hanging sling 1, the anti-fall component 2 in the anti-fall lifting device can lift the long-distance hanging sling 1 when the descending speed of the long-distance hanging sling 1 is greater than the preset speed to prevent the radioactive equipment from falling. Therefore, during the process of crane lifting the radioactive equipment, the stability of the radioactive equipment can be maintained, and the radioactive equipment can be prevented from falling and being damaged, thereby improving the stability and safety of the radioactive equipment during lifting.

[0098] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A fall prevention and lifting device, characterized in that: include: A long-distance hanging sling (1) connected to a crane for lifting heavy objects; A guide assembly (3) connected to the long-distance hooking sling (1) and used to guide the long-distance hooking sling (1) when the long-distance hooking sling (1) is raised or lowered; and, The anti-falling component (2) is connected to the guide component (3) and is used for rising and falling under the drive of the guide component (3), and when the descending speed of the long-distance hanging sling (1) is greater than a preset speed, the long-distance hanging sling (1) is lifted to stop the long-distance hanging sling (1) from descending.

2. The anti-fall lifting device according to claim 1, characterized in that: The guide assembly (3) comprises: A first guide rail (11) is fixed on the first reference plane and arranged in a vertical direction; and A connecting member (13) is slidably arranged on the first guide rail (11) and is connected to the long-distance hanging sling (1) so as to be lifted and lowered under the drive of the long-distance hanging sling (1) and to guide the long-distance hanging sling (1).

3. The anti-fall lifting device according to claim 2, characterized in that: The anti-falling component (2) comprises: A second guide rail (14) is fixed on a second reference plane and is arranged parallel to the first guide rail (11); a support plate (15) slidably disposed on the second guide rail (14), a portion of the support plate (15) extending directly below the long-distance hanging sling (1), and the support plate (15) being capable of lifting the long-distance hanging sling (1); the support plate (15) being connected to the connecting member (13) so as to be lifted and lowered along the second guide rail (14) under the drive of the connecting member (13); and, The anti-fall structure (16) comprises a centrifugal speed limiter and a safety clamp; the centrifugal speed limiter is fixed on the top of the second guide rail (14), and the steel wire rope of the centrifugal speed limiter is respectively connected to the support plate (15) and the safety clamp, so as to detect the descending speed of the support plate (15) through the steel wire rope, and drive the safety clamp to operate through the steel wire rope when the descending speed of the support plate (15) is greater than a preset speed; the safety clamp is fixed on the support plate (15), and is used to clamp the second guide rail (14) and self-lock when in operation, so that the support plate (15) stops descending, thereby lifting the long-distance hanging sling (1) through the support plate (15), so that the long-distance hanging sling (1) stops descending.

4. The anti-fall lifting device according to claim 3, characterized in that: The guide assembly (3) further comprises a slide rail (12), wherein the slide rail (12) is slidably arranged on the first guide rail (11), and the length of the slide rail (12) is greater than the length of the connecting member (13); The connecting member (13) is fixed on the slide rail (12), and the support plate (15) is connected to the connecting member (13) via the slide rail (12).

5. The anti-fall lifting device according to claim 3, characterized in that: The long-distance hanging sling (1) comprises: The frame (6) is used for lifting heavy objects; the connecting member (13) is connected to the frame (6); a part of the support plate (15) extends into the bottom of the frame (6) so as to lift the frame (6); a telescopic hook (4), wherein a first end of the telescopic hook (4) is fixed to the center of the frame (6) and a second end is connected to the crane; and, A plurality of zippers (5), wherein the first ends of the plurality of zippers (5) are connected to the second ends of the telescopic hooks (4), and the second ends of the plurality of zippers (5) are respectively connected to the respective edges of the frame (6).

6. The anti-fall lifting device according to claim 5, characterized in that: The connecting piece (13) is provided with a connecting hole, and the connecting hole is arranged toward the long-distance hanging sling (1); The long-distance hanging sling (1) is provided with a transverse hook (8) and a transverse operating disk (10); the transverse hook (8) can extend into the connecting hole, and the transverse operating disk (10) is transmission-connected to the transverse hook (8); After the transverse hook (8) extends into the connecting hole, the transverse operating disk (10) is rotated to drive the transverse hook (8) to rotate, so as to achieve the connection and separation of the transverse hook (8) and the connecting member (13).

7. The anti-fall lifting device according to claim 5, characterized in that: The long-distance hanging sling (1) is also provided with a vertical hook (7) and a vertical operating panel (9); The vertical hook (7) is arranged below the long-distance hooking sling (1), and the vertical hook (7) is transmission-connected to the vertical operating panel (9); rotating the vertical operating panel (9) can drive the vertical hook (7) to rotate, thereby realizing the hooking and separation of the vertical hook (7) and the heavy object.

8. The anti-fall lifting device according to any one of claims 1 to 7, characterized in that: The number of the guide components (3) and the anti-fall components (2) are both two, and the two are arranged in pairs. The two pairs of the guide components (3) and the anti-fall components (2) are arranged on the same side of the long-distance hanging sling (1).

9. A crane, characterized in that: include: The crane body has a hook that can be raised and lowered; and, The anti-fall lifting device according to any one of claims 1 to 8; The hook of the crane body is connected to the long-distance hanging sling (1) of the anti-fall lifting device, so that the long-distance hanging sling (1) is driven to rise and fall through the hook.

10. A method for lifting a radioactive component, characterized in that: Using the anti-fall lifting device according to any one of claims 1 to 8, the method for lifting the radioactive equipment comprises: Connecting the crane to the long-distance hanging sling (1) of the anti-fall lifting device; The crane drives the long-distance hanging sling (1) to descend to the radioactive equipment, and hangs the long-distance hanging sling (1) on the radioactive equipment; The crane drives the long-distance hanging sling (1) to rise to the target position, and separates the long-distance hanging sling (1) from the radioactive equipment.

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