Multifunctional guide column grabbing tool

Abstract

The invention provides a multifunctional guide column grabbing tool. The multifunctional guide column grabbing tool comprises a hanging ring, an operation handle, a hook claw operation handle, a rod body, an inner sleeve, a mandrel and hook claws. The hanging ring is installed on the top of the rod body. The operating handle is located at the upper end of the rod body and used for an operator to adjust the posture of the multifunctional guide column grabbing tool through the operating handle. The lower end positioning pin of the rod body is inserted into the upper end round hole of the long guide column rod body. The inner sleeve is located in the rod body and configured to slide up and down in the rod body. The lower end of the inner sleeve is provided with a boss structure, and the upper end of the inner sleeve is provided with a claw operating handle. The mandrel is located in the inner sleeve, the upper end of the mandrel is matched with the manual torque wrench, and the lower end of the mandrel is matched with the long guide column locking rod. By integrating multiple functions of grabbing, transferring and screwing of the quick-release guide column, the technical problems that the operation time of operators is too long and the irradiation dose of field operators is increased due to the fact that the operation of the guide column is complex in the prior art are solved.

Description

Technical Field

[0001] The present application belongs to the technical field of hoisting of in-pile components, and in particular relates to a multifunctional guide column grabbing tool. Background Art

[0002] The lifting of reactor internal components is a routine operation during the overhaul of nuclear power plants. In order to ensure the safety and accuracy of the lifting process of reactor internal components, guide columns must be used to guide the entire lifting process.

[0003] However, the existing guide column operation is relatively complicated, which makes the operator's operation time too long and also increases the radiation dose of the on-site operator. Summary of the invention

[0004] In view of this, the present application is committed to providing a multifunctional guide column grabbing tool, which integrates the multiple functions of grabbing, transporting and screwing of quick-release guide columns to solve the existing technical problems of long operation time for operators and increased radiation dose for on-site operators caused by the complicated operation of guide columns.

[0005] The present application provides a multifunctional guide column grabbing tool, which includes a lifting ring, an operating handle, a claw operating handle, a rod body, an inner sleeve, a mandrel and a claw. The lifting ring is installed at the top of the rod body, and is used to lift the multifunctional guide column grabbing tool. At the same time, after the multifunctional grabbing tool is used to grab the guide column, the guide column is lifted and transported. The operating handle is located at the upper end of the rod body, and the operator adjusts the posture of the multifunctional guide column grabbing tool through the operating handle. The positioning pin at the lower end of the rod body is used to insert into the circular hole at the upper end of the long guide column rod body to stabilize the multifunctional grabbing tool. The inner sleeve is located inside the rod body and is configured to slide up and down inside the rod body. The lower end of the inner sleeve has a boss structure, and the upper end of the inner sleeve is installed with a claw operating handle. By operating the claw operating handle up and down, the inner sleeve is driven to slide up and down along the inside of the rod body, and the lower claw is driven to expand and retract; the mandrel is located inside the inner sleeve, the upper end of the mandrel matches the manual torque wrench, and the lower end of the mandrel matches the long guide column locking rod.

[0006] In a specific embodiment of the present application, both ends of the mandrel are step structures, the upper end of the mandrel is a hexagonal head structure, and the lower end of the mandrel is a hexagonal hole. The lower end of the mandrel matches the hexagonal head of the long guide column locking rod.

[0007] In a specific embodiment of the present application, the core shaft is made of stainless steel.

[0008] In a specific embodiment of the present application, the hook operating handle includes a clamping nut, a baffle, a spring, a handle sleeve and a handle rod. Both ends of the handle rod are external thread structures. One end of the handle rod is fixed to the inner sleeve, and the other end of the handle rod is connected to the clamping nut. The clamping nut compresses the spring through the baffle and fixes it on the handle rod, and the whole is installed inside the handle sleeve.

[0009] In a specific implementation of the present application, the rod body has a limit slot on the outside, which is used to fix the position of the inner sleeve.

[0010] In a specific embodiment of the present application, the limiting slot is a circular slot.

[0011] In a specific embodiment of the present application, the upper end of the mandrel is engraved.

[0012] The beneficial effect of the technical solution of the present application is that: the embodiment of the present application adopts an integrated long pole structure with integrated operating functions, and the operator can conveniently and remotely operate and disassemble the long guide column and the basic guide column while standing on the temporary bridge, which not only reduces the difficulty of splicing the guide columns, but also avoids direct contact between the operator and the radioactive object, thereby reducing the radiation dose of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Shown is a schematic structural diagram of a multifunctional guide post grabbing tool provided in one embodiment of the present application.

[0014] Figure 2 Shown is a schematic structural diagram of a hook operating handle in a multifunctional guide column grabbing tool provided in one embodiment of the present application.

[0015] Figure 3 Shown is a schematic diagram of the principle of a multifunctional guide column grasping tool provided in an embodiment of the present application during a grasping operation.

[0016] Figure 4 Shown is a schematic diagram of the principle of a multifunctional guide post grabbing tool provided by an embodiment of the present application during a screwing operation. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] At least one embodiment of the present application provides a multifunctional guide post grabbing tool, such as Figure 1As shown, the multifunctional guide column grabbing tool (referred to as tool or grabbing tool) includes a lifting ring 100, an operating handle 200, a claw operating handle 300, a rod body 400, an inner sleeve 500, a core shaft 600 and a claw 700. The lifting ring 100 is installed at the top of the rod body 400, and is used to lift the multifunctional guide column grabbing tool. At the same time, after the guide column is grabbed by the multifunctional grabbing tool, the guide column is lifted and transported. The operating handle 200 is located at the upper end of the rod body 400, and is used by the operator to adjust the posture of the multifunctional guide column grabbing tool through the operating handle 200. The positioning pin at the lower end of the rod body 400 is used to insert into the circular hole at the upper end of the long guide column rod body to stabilize the multifunctional grabbing tool. The inner sleeve 500 is located inside the rod body 400 and is configured to slide up and down inside the rod body 400. The lower end of the inner sleeve 500 has a boss structure, and the upper end of the inner sleeve 500 is installed with a claw operating handle 300. By operating the hook operating handle 300 up and down, the inner sleeve 500 is driven to slide up and down along the inside of the rod body 400, driving the lower hook 700 to expand and retract; the core shaft 600 is located inside the inner sleeve 500, the upper end of the core shaft 600 matches the manual torque wrench, and the lower end of the core shaft 600 matches the long guide column locking rod.

[0019] It should be noted that the gripping tool rod body 400 is an integrated long rod. The mandrel 600 may also be referred to as a core rod,

[0020] According to the technical solution provided in the embodiment of the present application, the locating pin at the lower end of the rod body 400 is inserted into the circular hole at the upper end of the long guide column rod body to stabilize the multifunctional grasping tool so as to perform multiple subsequent actions. The upper end of the core shaft 600 is screwed to match it with the manual torque wrench, and the lower end of the core shaft 600 is matched with the long guide column locking rod, which supports the operator to transmit torque at a long distance at the upper end of the multifunctional guide column grasping tool, thereby realizing the multifunctional functions of quick-release guide column grasping, transportation and screwing. It is a one-piece device with multiple uses and simple operation, which improves the on-site operation efficiency, effectively avoids human errors, and greatly improves the safety of the splicing operation process. In addition, the multifunctional guide column grabbing tool is designed with a movable lifting ring 100 so that the guide column, the lifting ring 100, and the ring lifting hook are always kept in a hooked state, ensuring that there is no risk of tipping over during the splicing process; the tool is designed with a spring structure and a limit slot for the hook operating handle to avoid abnormal grabbing or release due to vibration, impact, or accidental touch; the tool is set with an in-place indicator mark to avoid damage to the thread due to failure to fit the screwed core rod or the guide column falling due to failure to lock the tool in place.

[0021] In at least one embodiment of the present application, Figure 4As shown, both ends of the mandrel 600 are step structures, the upper end of the mandrel 600 is a hexagonal head structure, and the lower end of the mandrel 600 is provided with a hexagonal hole. The lower end of the mandrel 600 matches the hexagonal head of the long guide column locking rod. In this way, the operator can transmit the torque to the long guide column locking rod by screwing the hexagonal head structure at the upper end of the mandrel 600, and lock and fix the long guide column body and the basic guide column.

[0022] In at least one embodiment of the present application, the core shaft 600 is made of stainless steel. Thus, the core shaft 600 made of stainless steel can withstand large torque without deformation such as necking and twisting.

[0023] In at least one embodiment of the present application, Figure 2 and Figure 3 As shown, the hook operating handle 300 includes a clamping nut 301, a baffle 302, a spring 303, a handle sleeve 304 and a handle rod 305. Both ends of the handle rod 305 are external thread structures. One end of the handle rod 305 is fixed to the inner sleeve 500, and the other end of the handle rod 305 is connected to the clamping nut 301. The clamping nut 301 compresses the spring 303 on the handle rod 305 through the baffle 302, and the whole is installed inside the handle sleeve 304. In this way, the hook operating handle 300 is connected to the inner sleeve 500, and the spring 303 compresses the handle sleeve 304 to the inside of the rod body through its own elastic force.

[0024] In at least one embodiment of the present application, the rod body 400 has a limit slot on the outside. The limit slot is used to fix the position of the inner sleeve 500. In this way, the position of the inner sleeve 500 is fixed by the limit slot, and the spring force cooperates with the limit slot to ensure that normal vibration, impact, and accidental touch will not change the position of the inner sleeve 500. The tool switches the grabbing or releasing action by moving the inner sleeve 500. Before the action is switched, the operator holds the handle sleeve 304 tightly, and applies force to the outside of the tool to overcome the elastic force of the spring 303 to remove the handle 300 from the limit slot of the rod body 400, and moves the hook claw operating handle 300 up and down to drive the inner sleeve 500 to move, so that the lower end boss of the inner sleeve 500 slides up and down on the inner side slope close to the hook claw 700, and the hook claw 700 is pushed out or retracted to achieve the tool grabbing or releasing action.

[0025] The limiting slot is a circular slot or other special-shaped slot, which is not specifically limited in the embodiments of the present application.

[0026] In at least one embodiment of the present application, the limiting slot is a circular slot, so that the circular slot can ensure that the position of the tool load-bearing inner sleeve 500 does not change after the hook operating handle 300 moves up and down to the desired position.

[0027] In at least one embodiment of the present application, the upper end of the mandrel 600 is engraved. In this way, the operator can judge whether the conical surface of the guide post is in place and whether the quick-release guide post is spliced ​​and locked in place by the position of the engraved line, thereby avoiding accidents caused by human error in judging the current state of the tool, especially the accident of thread damage caused by screwing the mandrel 600 when the guide post is not in place, and the accident of damage or falling off of the connecting part of the guide post when the guide post is not locked in place and is lifted off the tool.

[0028] Below, reference Figure 3 and Figure 4 , the working principle of the multifunctional guide column grabbing tool is illustrated with examples in combination with specific embodiments.

[0029] When performing the guide column splicing operation, first lift and align the lower end pin of the grasping tool to insert it into the circular hole on the upper end of the long guide column rod body; then use the claw operating handle 300 to open the claw 700 to complete the grasping of the long guide column, and insert the core shaft 600 into the hexagonal head of the locking rod inside the long guide column; after the long guide column and the basic guide column are successfully docked, confirm that they are in place by observing the fit-in scale line on the core shaft 600, and then use a torque wrench to screw the core shaft 600 to transfer the torque to the guide column locking rod to complete the locking and fixation of the long guide column and the basic guide column; finally, operate the claw operating handle 300 to retract the claw 700 to complete the release of the long guide column, and after confirming the release, lift off the grasping tool to complete the splicing operation.

[0030] It should be noted that the combination of the various technical features in the embodiments of the present application is not limited to the combination described in the embodiments of the present application or the combination described in the specific embodiments, and all technical features described in the present application can be freely combined or combined in any way unless there is a contradiction between them.

[0031] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the term "comprising" only indicates that the steps and elements that have been clearly identified are included, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0032] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A multifunctional guide post grabbing tool, characterized in that: It includes a lifting ring, an operating handle, a hook operating handle, a rod body, an inner sleeve, a core shaft and a hook. Among them, the lifting ring is installed at the top of the rod body, which is used to lift the multifunctional guide column grabbing tool. At the same time, after the guide column is grabbed by the multifunctional grabbing tool, the guide column is lifted and transported; The operating handle is located at the upper end of the rod body, and is used by the operator to adjust the posture of the multifunctional guide column grabbing tool through the operating handle; The positioning pin at the lower end of the rod body is used to be inserted into the circular hole at the upper end of the long guide column rod body to stabilize the multifunctional grabbing tool; The inner sleeve is located inside the rod body and is configured to slide up and down inside the rod body; the lower end of the inner sleeve has a boss structure, and the upper end of the inner sleeve is equipped with a hook operating handle; by operating the hook operating handle up and down, the inner sleeve is driven to slide up and down along the inside of the rod body, driving the lower hook to expand and retract; The core shaft is located inside the inner sleeve, the upper end of the core shaft matches the manual torque wrench, and the lower end of the core shaft matches the long guide column locking rod.

2. A multifunctional guide post grabbing tool according to claim 1, characterized in that: Both ends of the mandrel are step structures, the upper end of the mandrel is a hexagonal head structure, the lower end of the mandrel is provided with an inner hexagonal hole, and the lower end of the mandrel matches the hexagonal head of the long guide column locking rod.

3. A multifunctional guide post grabbing tool according to claim 1, characterized in that: The material of the mandrel is stainless steel.

4. The multifunctional guide post grabbing tool according to claim 1, characterized in that: The hook claw operating handle includes a clamping nut, a baffle, a spring, a handle sleeve and a handle rod. Both ends of the handle rod are external threaded structures. One end of the handle rod is fixed to the inner sleeve, and the other end of the handle rod is connected to the clamping nut. The clamping nut compresses the spring through the baffle and fixes it on the handle rod. The whole is installed inside the handle sleeve.

5. The multifunctional guide post grabbing tool according to claim 1, characterized in that: The rod body is provided with a limit slot on the outside; the limit slot is used to fix the position of the inner sleeve.

6. A multifunctional guide post grabbing tool according to claim 5, characterized in that: The limiting slot is a circular slot.

7. A multifunctional guide post grabbing tool according to any one of claims 1 to 6, characterized in that: The upper end of the mandrel is engraved.

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