Ultrasonic atomization-based penetrant detection developer remote application device

Abstract

The invention discloses a penetration testing developer remote applying device based on ultrasonic atomization in the technical field of penetration testing, which comprises an electric spray gun, a main body part positioned at the lower part, an atomization part transversely arranged in the upper part of the main body part, and a control part connected to one end of the atomization part, the extending part is arranged on the main body part and extends outwards to the outside of the main body part, and the spraying part is arranged at the tail end of the extending part. According to the invention, by arranging the atomizing part of which the bending shape can be freely changed, a penetration detection reagent can be applied at a long distance or under the condition of space blocking, and meanwhile, the pressure of the control device for spraying the atomized reagent into the atomizing part can be adjusted through the pressure control unit, so that the reagent is uniformly conveyed and applied outwards in a thin and uniform mist shape; and the sensitivity of penetration detection under the condition of long distance or space blocking is not influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of penetrant testing, and particularly to a remote application device for a penetrant testing developer based on ultrasonic atomization. Background Art

[0002] Penetrant testing technology is a non-destructive testing technology based on the principle of capillary action, mainly used for detecting surface opening defects of non-porous metal or non-metal parts. During testing, a penetrant solution containing a fluorescent dye or a coloring dye is applied to the surface of the part. Due to capillary action, the penetrant seeps into small surface opening defects. After removing the excess penetrant adhering to the workpiece surface and drying, a developer is applied. The penetrant in the defects is re-adsorbed onto the part surface under the action of capillary phenomenon, forming an enlarged defect display, and thus the morphology and distribution state of the defects can be detected.

[0003] Currently, penetrant testing can only be carried out on the surface of objects at close range and without obstruction in the testing space. For the surface of objects at a long distance or with obstruction in the testing space, penetrant testing cannot be effectively implemented. One of the more prominent difficulties is the inability to apply the developer at a long distance or in the case of spatial obstruction. For cleaning agents or penetrants, although long pipes can still be used for long-distance or curved spraying, for the developer, it is necessary to require the reagent to be a thin and uniform mist. When using a long pipe or curved spraying, due to the long spraying distance and the fixed spraying pressure of a conventional spray can, the atomized reagent formed by the spraying operation will form a thick liquid film on the inner wall of the pipe, and the penetrant seeping out from micro-cracks cannot penetrate the thick film, resulting in missed detection of cracks. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned existing remote application device for a penetrant testing developer based on ultrasonic atomization, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a remote application device for a penetrant testing developer based on ultrasonic atomization, and its purpose is: to be able to apply penetrant testing reagents, especially developers, at a long distance or in the case of spatial obstruction, and to achieve the application of a thin and uniform mist-like developer without affecting the sensitivity of penetrant testing at a long distance or in the case of spatial obstruction.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: including an electric spray gun, which includes a main body component located below, an atomization component horizontally arranged inside the main body component above, an extension component connected to one end of the atomization component and extending outward to the outside of the main body component, and a spraying component arranged at the end of the extension component; and,

[0007] A pressure control unit, including a connecting component arranged at the connection between the atomizing component and the extending component, one end of the extending component extends through the connecting component into the atomizing component, four groups of annularly equally divided squeezing components plugged on the connecting component, and the inner end of each group of squeezing components abuts against the outer wall of the extending component extending into the interior of the connecting component, and a driving component threadedly sleeved on the connecting component, and the end of each group of squeezing components laterally extends and plugs into the driving component.

[0008] As a preferred scheme of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, wherein: the main body component includes a horizontally arranged main body assembly, a reagent chamber opened inside the main body assembly, an inlet is arranged at the top of the reagent chamber, and a grip vertically arranged below the main body assembly.

[0009] As a preferred scheme of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, wherein: the atomizing component includes an atomizing chamber located in the reagent chamber, a rising pipe arranged below the atomizing chamber and communicated with the reagent chamber, and an air inlet pipe connected to one end of the atomizing chamber and extending outward to the outside of the main body assembly.

[0010] As a preferred scheme of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, wherein: the extending component includes an inner pipe connected to the other end of the atomizing chamber, the inner pipe extends outward through the connecting component to the outside, and a universal pipe sleeved on the outer wall of the outward extending part of the inner pipe.

[0011] As a preferred scheme of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, wherein: the spraying component includes a connecting cylinder connected to the end of the inner pipe, three groups of first support arc rods annularly distributed on the outer side of one end of the connecting cylinder, and three groups of second support arc rods also annularly distributed on the outer side of the other end of the connecting cylinder, and a connecting frame is sleeved on the mutually approaching ends of the first support arc rod and the second support arc rod.

[0012] As a preferred scheme of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, wherein: the spraying component further includes a support spring arranged between the connecting frame and the connecting cylinder, and an atomizing nozzle rotatably connected to the outer end of the connecting cylinder, the inner pipe extends into the connecting cylinder, and the outer end of the inner pipe is communicated with the atomizing nozzle.

[0013] As a preferred embodiment of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, the connection component includes a connecting pipe provided at one end of the main body component, a threaded pipe connected to the outer end of the connecting pipe, four slots annularly distributed between the threaded pipe and the connecting pipe, a slot located between every two groups of the limiting blocks, and a limiting piece provided at the end of the threaded pipe.

[0014] As a preferred embodiment of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, the inner pipe passes through the connecting pipe, the driving component is threadedly connected to the threaded pipe, and the four groups of extrusion components are correspondingly inserted into the four slots.

[0015] As a preferred embodiment of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, the extrusion component includes a support rod vertically inserted into the slot, an arc-shaped frame provided at the inner end of the support rod and having an arc-shaped structure, and the inner side of the arc-shaped frame abuts against the outer wall of the inner pipe, and an extension rod horizontally provided at the top of the support rod.

[0016] As a preferred embodiment of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention, the driving component includes a driving ring threadedly connected to the threaded pipe, and four driving grooves annularly distributed on the driving ring, and the extension rod extends into the driving groove, the driving groove is of an arc-shaped structure, the inner end of the arc-shaped structure is close to the center of the driving ring, and the outer end is close to the outer wall of the driving ring.

[0017] The beneficial effects of the present invention: By providing an atomization component that can freely change its bending shape, the penetrant testing reagent can be applied at a long distance or in the case of spatial obstruction. At the same time, the pressure control unit can adjust and control the pressure of the device injecting the atomized reagent into the atomization component, so as to realize the uniform outward transportation and application of the reagent in a thin and uniform mist shape, without affecting the sensitivity of penetrant testing at a long distance or in the case of spatial obstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the remote application device for penetrant testing developer based on ultrasonic atomization according to the present invention.

[0020] Figure 2This is a schematic diagram of the internal structure of the remote application device for the penetrant inspection developer based on ultrasonic atomization of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the spraying component of the remote application device for the penetrant inspection developer based on ultrasonic atomization of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the pressure control unit of the remote application device for the penetrant inspection developer based on ultrasonic atomization of the present invention.

[0023] Figure 5 This is an exploded schematic diagram of the structure of the pressure control unit of the remote application device for the penetrant inspection developer based on ultrasonic atomization of the present invention.

[0024] Figure 6 This is a schematic diagram of the left perspective structure of the pressure control unit of the remote application device for the penetrant inspection developer based on ultrasonic atomization of the present invention. Detailed implementation manners

[0025] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings of the specification.

[0026] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or alternative embodiment that mutually excludes other embodiments.

[0028] Furthermore, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general ratio, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0029] Embodiment 1

[0030] Refer to Figures 1 to 2, which is the first embodiment of the present invention, provides a remote application device for penetrant inspection developer based on ultrasonic atomization. This device includes an electric spray gun, which includes a main body component located below, an atomization component horizontally arranged inside the upper part of the main body component, an extension component connected to one end of the atomization component and extending outward to the outside of the main body component, and a spraying component arranged at the end of the extension component. The main body component is a common pistol-type electric sprayer in the prior art, and the atomization component is an atomization and spraying structure inside the sprayer, and these structures all belong to relatively mature technologies in the prior art. The extension component is a spray pipe with an internal hose, which can extend and specify the spraying distance and position of the electric spray gun. The spraying component is a spraying outlet with side wall support, which can prevent the spraying component from directly contacting the area to be sprayed and causing a spraying dead zone; and,

[0031] A pressure control unit, which includes a connecting component arranged at the connection between the atomization component and the extension component, and one end of the extension component passes through the connecting component and extends into the atomization component. Four groups of annular and equally divided extrusion components are inserted on the connecting component, and the inner end of each group of extrusion components abuts against the outer wall of the extension component extending into the inside of the connecting component. And a driving component is threadedly sleeved on the connecting component, and the end of each group of extrusion components extends horizontally and is inserted into the driving component. By rotating on the connecting component, the extrusion components can drive the four groups of extrusion components to move in opposite directions. The extrusion components moving in opposite directions can squeeze the extension component to make the flow channel inside it smaller or restore and increase.

[0032] During the use process, penetrant reagents, such as liquids like coloring agents, cleaning agents, developers, etc., are added into the main body component. Manually bend the extension component according to the use requirements and align it with the part that needs to apply the penetrant reagent for inspection. For example, when encountering the surface of an object with a long distance or blocked by a detection space, an endoscope lens tube can be fixed on one side of the extension component, and the endoscope is used to observe the sight-limited part. Align the extension component with the part to be inspected, start the atomization component to absorb the reagent in the main body component and start atomization. According to the conveying distance, rotate the driving component. The rotating driving component will drive the four groups of extrusion components to change the size at the connection between the extension component and the atomization component, thereby changing the injection pressure. Then start the main body component to apply the penetrant reagent, especially the developer, to the area to be inspected.

[0033] Embodiment 2

[0034] Referring to Figures 2 to 3 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that it provides a handheld spray and can adjust the shape and extension length of the extension component according to the actual position to be sprayed, so that the device can meet the spraying work applied to positions with limited space and turning positions.

[0035] Compared with Embodiment 1, further, the main body component includes a horizontally arranged main body assembly, a reagent chamber opened inside the main body assembly, an inlet provided at the top of the reagent chamber, and a grip vertically arranged below the main body assembly. The reagent chamber is a place for accommodating reagents. The two sides of the grip adopt a double-arc ergonomic design for easy operation. A battery compartment is provided inside, and the battery in the compartment is designed as a rechargeable battery, which is compatible with AC power supply.

[0036] Among them, the atomization component includes an atomization chamber located in the reagent chamber, a rising pipe provided below the atomization chamber and communicating with the reagent chamber, and an air inlet pipe connected to one end of the atomization chamber and extending outward to the outside of the main body assembly. The atomization component is a place for atomization, and an atomizer is provided therein for atomization. The rising pipe communicates with the reagent chamber. The atomization chamber can suck the reagent in the reagent chamber into the atomization chamber through the rising pipe for atomization. A flow regulating valve and a pressure regulating valve are externally connected and provided on the air inlet pipe to adjust the flow rate and pressure of compressed air.

[0037] Among them, the extension component includes an inner pipe connected to the other end of the atomization chamber, and the inner pipe extends outward through the connecting component to the outside, and a universal pipe sleeved on the outer wall of the outward extension part of the inner pipe. The inner pipe is made of a soft material at the inner part of the connecting component. When being squeezed by the squeezing component, it will contract, and then form a shape where two cones abut against each other relatively. The universal pipe is composed of a corrugated universal elbow structure and can change its shape according to the use requirements, so as to meet the purpose of extending into a bent or restricted space.

[0038] Among them, the spraying component includes a connecting cylinder connected to the end of the inner pipe, three groups of first support arc rods annularly distributed on the outer side of one end of the connecting cylinder, and three groups of second support arc rods also annularly distributed on the outer side of the other end of the connecting cylinder. A connecting frame is sleeved on the mutually approaching ends of the first support arc rod and the second support arc rod. The first support arc rod and the second support arc rod are both rotatably connected to both sides of the connecting cylinder. Each group of connecting cylinder and the first support arc rod form a semi-circular ring structure, and the two are rotatably connected through the connecting frame. The support spring elastically supports outward, so that the second support arc rod and the first support arc rod always support outward.

[0039] Among them, the spraying component also includes a support spring arranged between the connecting frame and the connecting cylinder, and an atomizing nozzle rotatably connected to the outer end of the connecting cylinder. The inner pipe extends into the connecting cylinder, and the outer end of the inner pipe communicates with the atomizing nozzle. The atomizing nozzle is an atomizing nozzle, which can further atomize the actual liquid conveyed from the inner pipe to prevent the actual liquid from condensing.

[0040] During use, one end of the spraying component is inserted into a restricted space. The supporting spring elastically supports and pushes the first supporting arc rod and the second supporting arc rod outwards. When the first supporting arc rod and the second supporting arc rod with an arc structure come into contact with the opening of the restricted space, the force directly abutting the two can be converted into a force that squeezes the second supporting arc rod to contract inwards. The second supporting arc rod that contracts inwards will synchronously drive the connecting cylinder to contract, reducing the overall occupied size of the spraying component, facilitating entry, and achieving the purpose of adaptive adjustment according to the size of the opening of the restricted area. After entering the restricted area, the contracted first supporting arc rod and the second supporting arc rod cooperate to make a gap exist between the atomizing nozzle and the position to be sprayed in the horizontal direction, preventing the problem that there is not enough diffusion distance during actual spraying and thus adhering to the atomizing nozzle.

[0041] The remaining structures are the same as those in Embodiment 1.

[0042] Embodiment 3

[0043] Refer to Figures 4 to 6 , which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is: changing the outlet of the spraying and conveying of the extending component to increase the outward output pressure to ensure that the reagent can be sprayed to the designated position.

[0044] Compared with Embodiment 2, further, the connecting component includes a connecting pipe arranged at one end of the main body component, a threaded pipe connected to the outer end of the connecting pipe, four groups of slots annularly distributed between the threaded pipe and the connecting pipe, slots located between every two groups of limiting blocks, and a limiting piece arranged at the end of the threaded pipe. Threads are provided on the threaded pipe, and the driving component is threadedly connected to the threaded pipe.

[0045] Among them, the inner pipe passes through the connecting pipe, the driving component is threadedly connected to the threaded pipe, and the four groups of squeezing components are correspondingly inserted into the four groups of slots. The overall structure of the slots is a rectangular notch, and the squeezing components located therein are restricted by it and cannot rotate circumferentially.

[0046] Among them, the squeezing component includes a strut vertically inserted into the slot, an arc-shaped frame arranged at the inner end of the strut and having an arc structure, and the inner side of the arc-shaped frame abuts against the outer wall of the inner pipe, and an extension rod horizontally arranged at the top of the strut. The inner ends of the four groups of squeezing components surround each other, and an annular structure can be formed at the inner end of the inner pipe through the arc-shaped frames at their respective inner ends. At the same time, the struts as a whole are inserted into the slots and can only perform vertical telescopic movement within the slots.

[0047] Among them, the driving component includes a driving ring threadedly connected to the threaded tube, and four groups of driving grooves annularly distributed on the driving ring, and the extension rod extends into the driving groove. The driving groove is an arc-shaped structure, the inner end of the arc-shaped structure is close to the center of the driving ring, and the outer end is close to the outer wall of the driving ring. In the normal state, the extension rod on the side of the top end of the support rod is located at the outer end of the driving groove close to the outside.

[0048] During the use process, according to actual requirements, when the driving ring rotates, the position of the driving groove will be changed as the driving ring moves. Since the extrusion component is restricted by the slot and cannot move, the moving driving groove will convert the rotational force of the whole driving component into a force that pushes the whole extrusion component to squeeze inward along the slot through the extension rod. The four groups of extrusion components move inward synchronously, and will squeeze the inner tube located in the connecting tube through their respective arc-shaped frames, so that the inner tube changes from a circular tube structure with the same diameter to a structure with two thick ends and a thin middle. While the pressure applied by the electric spray gun remains unchanged, the size of the outlet of the pressure discharged by the inner tube is changed, which can achieve the purpose of increasing the pressure of the inner tube to discharge the atomized reagent outward, thereby ensuring that the reagent has sufficient spraying pressure to be sprayed to the designated position. At the same time, the amplitude of the extrusion component squeezing the inner tube changes with the number of turns of the driving component rotating. Therefore, the spraying pressure of the device can be regulated by adjusting the rotation amplitude of the driving component, so as to meet more usage requirements.

[0049] The rest of the structure is the same as that of Embodiment 2.

[0050] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are only illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible on the premise of substantially not deviating from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various elements, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature, number or position of discrete elements can be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure that performs the recited function in this disclosure, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0051] In addition, to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present invention or those features that are not relevant to the implementation of the present invention).

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A remote application device for penetrant testing developer based on ultrasonic atomization, characterized in that: include, An electric spray gun (100) comprises a main body component (101) located at a lower part, an atomizing component (102) arranged transversely above and inside the main body component (101), an extension component (103) connected to one end of the atomizing component (102) and extending outward to the outside of the main body component (101), and a spraying component (104) arranged at the end of the extension component (103); and, The pressure control unit (200) comprises a connecting component (201) arranged at the connection between the atomizing component (102) and the extending component (103), and one end of the extending component (103) passes through the connecting component (201) and extends into the atomizing component (102); four groups of extrusion components (202) are equally divided and annularly plugged into the connecting component (201), and the inner end of each group of the extrusion components (202) abuts against the outer wall of the extending component (103) extending into the interior of the connecting component (201); and a driving component (203) is threadedly sleeved on the connecting component (201), and the end of each group of the extrusion components (202) is transversely extended and plugged into the driving component (203).

2. The remote application device for penetrant detection developer based on ultrasonic atomization according to claim 1 is characterized in that: The main body part (101) comprises a transversely arranged main body component (101a), a reagent chamber (101b) opened inside the main body component (101a), an inlet being arranged at the top of the reagent chamber (101b), and a handle (101c) arranged vertically below the main body component (101a).

3. The remote application device for penetrant detection developer based on ultrasonic atomization according to claim 2, characterized in that: The atomizing component (102) comprises an atomizing chamber (102a) located in the reagent chamber (101b), a riser (102b) arranged below the atomizing chamber (102a) and connected to the reagent chamber (101b), and an air inlet pipe (102c) connected to one end of the atomizing chamber (102a) and extending outward to the outside of the main body component (101a).

4. The remote application device for penetrant detection developer based on ultrasonic atomization according to claim 3 is characterized in that: The extension component (103) comprises an inner tube (103a) connected to the other end of the atomization chamber (102a), and the inner tube (103a) extends outward through the connection component (201) to the outside, and a universal tube (103b) sleeved on the outer wall of the outward extending portion of the inner tube (103a).

5. The remote application device for penetrant detection developer based on ultrasonic atomization according to claim 4 is characterized in that: The spraying component (104) comprises a connecting tube (104a) connected to the end of the inner tube (103a), three groups of first supporting arc rods (104b) annularly distributed on the outside of one end of the connecting tube (104a), and three groups of second supporting arc rods (104c) also annularly distributed on the outside of the other end of the connecting tube (104a), and a connecting frame (104d) is sleeved on the ends of the first supporting arc rods (104b) and the second supporting arc rods (104c) that are close to each other.

6. The remote application device for penetrant detection developer based on ultrasonic atomization according to claim 5, characterized in that: The spraying component (104) also includes a supporting spring (104f) arranged between the connecting frame (104d) and the connecting tube (104a), and an atomizing nozzle (104g) rotatably connected to the outer end of the connecting tube (104a), the inner tube (103a) extends into the connecting tube (104a), and the outer end of the inner tube (103a) is connected to the atomizing nozzle (104g).

7. The remote application device for penetrant detection developer based on ultrasonic atomization according to claim 6, characterized in that: The connecting component (201) comprises a connecting tube (201a) arranged at one end of the main body component (101a), a threaded tube (201b) connected to the outer end of the connecting tube (201a), four groups of slots (201d) distributed in an annular shape between the threaded tube (201b) and the connecting tube (201a), a slot (201d) located between every two groups of the limiting blocks (201c), and a limiting plate (201e) arranged at the end of the threaded tube (201b).

8. The remote application device for penetrant detection developer based on ultrasonic atomization according to claim 7, characterized in that: The inner tube (103a) passes through the connecting tube (201a), the driving component (203) is threadedly connected to the threaded tube (201b), and the four groups of extrusion components (202) are correspondingly inserted into the four groups of slots (201d).

9. The remote application device for penetrant testing developer based on ultrasonic atomization according to claim 8, characterized in that: The extrusion component (202) comprises a support rod (202a) vertically inserted into the slot (201d), an arc-shaped frame (202b) arranged at the inner end of the support rod (202a) and having an arc-shaped structure, wherein the inner side of the arc-shaped frame (202b) abuts against the outer wall of the inner tube (103a), and an extension rod (202c) transversely arranged at the top end of the support rod (202a).

10. The remote application device for penetrant testing developer based on ultrasonic atomization according to claim 9, characterized in that: The driving component (203) comprises a driving ring (203a) threadedly connected to the threaded tube (201b), and four groups of driving grooves (203b) annularly distributed on the driving ring (203a), and the extension rod (202c) extends to the driving groove (203b), and the driving groove (203b) is an arc-shaped structure, the inner end of the arc-shaped structure is close to the center of the driving ring (203a), and the outer end is close to the outer wall of the driving ring (203a).

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