Handheld column connection point cleaner

By designing the piston cylinder and drive mechanism of the handheld columnar joint cleaner, the problem of low cleaning efficiency of columnar joints is solved, achieving a highly efficient cleaning effect that can completely remove stains without disassembly.

CN223717787UActive Publication Date: 2025-12-26王嘉瑞
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Patent Information

Application Number
CN202522310464.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-31
Publication Date
2025-12-26
Estimated Expiration
2035-10-31

AI Technical Summary

Technical Problem

In existing technologies, the cleaning efficiency of columnar joints is low, manual wiping is difficult, stains cannot be completely removed, and the process is time-consuming.

Method used

Design a handheld cleaner for cleaning columnar object connection points. The cleaner uses a piston cylinder and a drive mechanism. The piston cylinder is fitted outside the columnar object connection point and is combined with a sheet-like flexible material or brush bristles. The drive mechanism enables the piston cylinder to reciprocate, thus completing the full-coverage wiping of the columnar object connection point.

Benefits of technology

It enables thorough removal of stains without disassembling the column connection points, improving wiping efficiency and ensuring cleaning results.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of column connection point cleaning, in particular to a handheld column connection point cleaner which is used for cleaning the surface of a column connection point, the column connection point is fixed on a base, the cleaner comprises a sleeve, a driving mechanism and a piston, and the piston comprises a piston rod and a piston cylinder. The piston barrel is of a barrel-shaped structure with the top end closed and the bottom end open, the piston barrel is arranged outside the columnar object connecting point in a sleeving mode, and a wiping object is arranged between the piston barrel and the columnar object connecting point; the sleeve is of a hollow structure with an opening in the bottom end, a through hole is formed in the top end of the sleeve, the sleeve sleeves the piston cylinder, and the bottom end of the sleeve makes contact with the base; the bottom end of the piston rod is fixedly connected with the top end of the piston cylinder, and the top end of the piston rod penetrates through the through hole to be connected with the output end of the driving mechanism. According to the utility model, the wiping efficiency can be improved while pollutants on the surface of the connection point of the columnar object are thoroughly removed.
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Description

TECHNICAL FIELD

[0001] The utility model relates to cylindrical object connecting point cleaning technical field especially relates to a piston reciprocating type handheld cylindrical object connecting point cleaner. BACKGROUND

[0002] With the development of ultrahigh voltage power grid, new energy (such as power generation and automobile), rail transit, aerospace, communication, artificial intelligence, high-end equipment manufacturing, chip, low-altitude economy and other fields (not limited to these fields) and the progress towards informatization and intelligentization, more and more connecting points for current transfer and transmission appear in various scenes, and these connecting points are inevitably polluted by oxygen, water vapor, dust and even corrosive substances in long-term use, resulting in unstable current transmission, and the electrical connection reliability of the positions of these connecting points is extremely important for the stable operation of the whole system. The connecting point structure forms are various, such as needle and hole interpenetrating mode, cylindrical object connecting point being surrounded and tightly held mode and the like. Among these connecting points with various structure forms, the cylindrical object connecting point is not very convenient to wipe, especially the cylindrical object connecting point with a circular ring around the outside is the most difficult.

[0003] For example, the electric switch machine, the automatic switch is an important component of the electric switch machine, mainly used for changing the opening direction of the turnout, locking the turnout, and accurately reflecting the position state of the turnout. The automatic switch includes a dynamic contact point group and a static contact point group, the static contact point group includes a plurality of contact sheets arranged side by side, and the dynamic contact point group includes a plurality of contact point columns arranged side by side.

[0004] Since the contact sheets are distributed around the contact point columns, and the gap between the contact sheets and the contact point columns is small, when manually wiping the contact point columns, the space operable by the hand is limited, the fingers are not easy to stretch to the bottom end of the contact point column, and it is impossible to ensure that the stains on the contact point column can be completely removed. If the dynamic contact point group is disassembled from the automatic switch for wiping, although the stains on the contact point column can be completely removed, disassembling and installing the dynamic contact point group will be very time-consuming, resulting in low wiping efficiency. INVENTION CONTENTS

[0005] Therefore, the utility model creates a cylindrical object connecting point wiping tool for replacing manual operation to realize automatic cleaning, solving the technical problems of low efficiency, high labor intensity and incomplete removal of pollutants in manual wiping.

[0006] To achieve the above purpose, the technical scheme of the utility model is realized as follows:

[0007] A handheld columnar connection point cleaner is used for cleaning the surface of a columnar connection point fixed on a base, comprising a sleeve, a driving mechanism and a piston; wherein the piston comprises a piston rod and a piston cylinder, the piston cylinder is a cylindrical structure with a closed top end and an open bottom end, the piston cylinder is sleeved outside the columnar connection point, and a wiping material is arranged between the piston cylinder and the columnar connection point;

[0008] The sleeve is a hollow structure with an open bottom end, a through hole is arranged at the top end of the sleeve, the sleeve is sleeved outside the piston cylinder, and the bottom end of the sleeve is in contact with the base;

[0009] The driving mechanism is fixed at the top end of the sleeve, the bottom end of the piston rod is fixedly connected with the top end of the piston cylinder, and the top end of the piston rod is connected with the output end of the driving mechanism through the through hole.

[0010] Further, the cylinder wall of the piston cylinder is a closed structure or an arc-shaped split structure.

[0011] Further, the wiping material is a sheet-shaped flexible material or a brush wire.

[0012] Further, the sheet-shaped flexible material is deerskin or non-woven fabric, and the sheet-shaped flexible material is filled between the piston cylinder and the wiped columnar connection point.

[0013] Further, the brush wire is any one of PBT wire, polypropylene wire, nylon wire, PE wire, horsehair and pig bristle, and the brush wire is inlaid on the cylinder wall of the piston cylinder.

[0014] Further, the driving mechanism comprises a housing and a driving element, the driving element is a servo air cylinder or a servo electric cylinder, the driving element is fixed in the housing, the output end of the driving element is connected with the top end of the piston rod through an adapter, the bottom end of the housing extends outward to form a bottom seat, the top end of the sleeve extends outward to form an ear seat, and the bottom seat abuts against the ear seat.

[0015] Further, a handle is integrally formed on the housing.

[0016] Further, the driving mechanism comprises a housing, a hand drill and a motion reversing assembly, a tapered hole is formed in the top end of the housing, the tapered hole cooperates with the tapered surface of the drill chuck of the hand drill, the motion reversing assembly is installed in the housing, the motion reversing assembly is connected with the drill chuck of the hand drill and the top end of the piston rod respectively, and is used for converting the rotary motion of the hand drill into the linear reciprocating motion of the piston rod, the bottom end of the housing forms a bottom seat, the top end of the sleeve extends outward to form an ear seat, and the bottom seat abuts against the ear seat.

[0017] Further, the motion reversing assembly is a ball screw or a planetary roller screw, both the ball screw and the planetary roller screw comprise a nut and a screw, the nut is fixed in the housing, the top end of the screw is clamped by the drill chuck, and the bottom end of the screw is connected with the top end of the piston rod through an adapter.

[0018] Further, the bottom socket is provided with a space for avoiding the movement of the piston rod.

[0019] Compared with the prior art, the utility model creation can achieve the following beneficial effects:

[0020] (1) Since the piston cylinder is a hollow structure with a cylindrical shape and a thin wall, it can easily penetrate into the bottom end of the columnar connection point in a narrow space, and the wiping material is wound and accumulated along the inner wall of the piston cylinder to a certain thickness to fill between the piston cylinder and the columnar connection point, which can fully cover the columnar connection point in the circumferential direction, thereby ensuring that the wiping material wipes the bottom end position of the columnar connection point and the outer wall in the entire circumferential direction with the reciprocating movement of the piston. Therefore, the utility model can completely remove the stains on the columnar connection point.

[0021] (2) The utility model can complete the surface wiping of the columnar connection point without disassembling the columnar connection point, which saves the time for disassembling the columnar connection point and improves the wiping efficiency.

[0022] (3) Through the internal stress of the wiping material and the high-frequency driving of the driving mechanism, the pollutants on the surface of the columnar connection point can be completely removed to achieve good cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the utility creation and are incorporated in and constitute a part of this description. The illustrative embodiments of the utility creation, and their description, serve to explain the utility creation without unduly limiting it. In the drawings:

[0024] Figure 1 is a structure schematic view of the handheld columnar connection point cleaner of the utility creation;

[0025] Figure 2 is a part of the simple structure schematic view of the handheld columnar connection point cleaner of the utility creation embodiment 1;

[0026] Figure 3 is a cross-sectional view of the piston cylinder of the utility creation embodiment 1;

[0027] Figure 4 is a part of the simple structure schematic view of the handheld columnar connection point cleaner of the utility creation embodiment 2;

[0028] Figure 5 is a cross-sectional view of the piston cylinder of the utility creation embodiment 2;

[0029] Figure 6Part simple structure schematic diagram of the handheld columnar object connecting point cleaner of the utility model creation embodiment 3;

[0030] Figure 7 Part simple structure schematic diagram of the handheld columnar object connecting point cleaner of the utility model creation embodiment 4.

[0031] The figure mark explanation: sleeve 1, ear seat 11, driving mechanism 2, shell 21, electric hand drill 22, lead screw 23, bottom socket 24, drill chuck 25, piston 3, piston rod 31, piston cylinder 32, wiping 4, movable contact seat 51, contact column 52. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model creation more clear and obvious, the utility model creation is further explained in detail below by combining with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model creation, and do not constitute a limitation on the utility model creation.

[0033] It should be noted that the embodiments in the utility model creation and the features in the embodiments can be combined with each other without conflict.

[0034] In the description of the utility model creation, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model creation and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model creation. In addition, the terms "first", "second" and the like are only for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model creation, unless otherwise specified, the meaning of "multiple" is two or more.

[0035] In the description of the utility model creation, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model creation can be understood through specific circumstances.

[0036] The utility model discloses a kind of handheld columnar object connecting point cleaners, for realizing the cleaning of current transfer and transmission columnar object connecting point. Figures 1-7 And in conjunction with the embodiments, the utility model discloses will be explained in detail.

[0037] The utility model discloses a kind of handheld columnar object connecting point cleaners, for realizing the cleaning of current transfer and transmission columnar object connecting point.

[0038] The movable contact group includes a movable contact seat 51 and a plurality of contact posts 52 arranged side by side and installed on the movable contact seat 51.

[0039] As shown in the drawings, the utility model provides a handheld columnar object connecting point cleaner, which comprises a sleeve 1, a driving mechanism 2, a piston 3 and a wiping object 4. Figures 1-7 The piston 3 comprises a piston rod 31 and a piston cylinder 32. The piston cylinder 32 is a hollow cylindrical structure with a closed top end and an open bottom end. The piston cylinder 32 is sleeved outside the contact post 52. The wiping object 4 is arranged between the contact post 52 and the piston cylinder 32. The sleeve 1 is a hollow cylindrical structure with an open bottom end. A through hole is formed in the top end of the sleeve 1. The sleeve 1 is sleeved outside the piston cylinder 32. The bottom end of the sleeve 1 abuts against the movable contact seat 51. The driving mechanism 2 is fixed to the top end of the sleeve 1. The bottom end of the piston rod 31 is fixedly connected to the top end of the piston cylinder 32. The top end of the piston rod 31 is connected to the output end of the driving mechanism 2 through the through hole. The driving mechanism 2 drives the piston rod 31 to drive the piston cylinder 32 to perform linear reciprocating motion, so as to drive the wiping object 4 to repeatedly wipe the surface of the contact post 52.

[0040] The reciprocating motion of the piston cylinder 32 takes the sleeve 1 as a coordinate reference point. The height of the sleeve 1 ensures that the wiping object 4 starts to return when wiping the root below the contact post 52 along with the reciprocating motion of the piston cylinder 32, so as to ensure the completion of the shortest effective wiping distance and avoid useless work.

[0041] The driving mechanism 2 can adopt the following two driving modes:

[0042] The first driving mode: the driving mechanism 2 comprises a housing 21 and a driving element. The driving element is a servo air cylinder or a servo electric cylinder. The servo air cylinder or the servo electric cylinder is fixed in the housing 21. A through hole is formed in the housing 21 to realize wiring of the servo air cylinder or the servo electric cylinder. The output end of the servo air cylinder or the servo electric cylinder is connected to the top end of the piston rod 31 through an adapter. Usually, the output end of the servo air cylinder or the servo electric cylinder is a threaded rod. In order to realize connection, the top end of the piston rod 31 can be provided as a threaded rod. Threaded holes are formed in the two ends of the adapter. The two ends of the adapter are threadedly connected to the top end of the piston rod 31 and the output end of the servo air cylinder or the servo electric cylinder, respectively.

[0043] The bottom seat 24 is formed on the bottom end of the shell 21, and the lug seat 11 is formed on the top end of the sleeve 1. The bottom seat 24 abuts against the lug seat 11, and the shell 21 is seated on the sleeve 1 when wiping the contact point post 52. The contact area of the bottom seat 24 and the lug seat 11 is increased as much as possible to ensure the stability between the shell 21 and the sleeve 1.

[0044] The bottom seat 24 is provided with a clearance space to avoid interference with the movement of the piston rod 31.

[0045] In actual operation, the sleeve 1 is first sleeved on the outside of the contact point post 52, and the bottom end of the sleeve 1 abuts against the movable contact seat 51. Then, the driving mechanism 2 is seated on the sleeve 1. One hand of the operator holds the sleeve 1, and the other hand holds the shell 21. The piston rod 31 is driven to move linearly through the servo cylinder or servo electric cylinder. In order to facilitate holding the shell 21, a handle is integrally formed on the shell 21.

[0046] The second driving mode: the driving mechanism 2 includes a shell 21, a hand drill 22, and a motion reversing assembly. A tapered hole is formed on the top end of the shell 21. The tapered hole and the drill chuck 25 of the hand drill 22 form a tapered surface cooperation, thereby realizing the stable connection between the shell 21 and the hand drill 22. The motion reversing assembly is installed in the shell 21. The motion reversing assembly is connected with the drill chuck 25 of the hand drill 22 and the top end of the piston rod 31, respectively. The rotary motion of the hand drill 22 is converted into the linear reciprocating motion of the piston rod 31 through the motion reversing assembly.

[0047] The motion reversing assembly adopts a ball screw or a planetary roller screw. The ball screw and the planetary roller screw both include a screw 23 and a nut installed on the screw 23. The screw 23 is threadedly engaged with the nut. The nut is fixed in the shell 21. The top end of the screw 23 is clamped by the drill chuck 25. The bottom end of the screw 23 is connected with the top end of the piston rod 31. Since the nut is fixed and cannot rotate by the shell 21, according to the thread pair principle, the rotating screw 23 advances in the fixed nut. Through the forward and reverse rotation of the hand drill 22, the linear reciprocating motion of the piston rod 31 is realized.

[0048] If the screw 23 adopts a solid structure, the screw 23 needs to be connected with the piston rod 31 through an adapter. At this time, the top end of the piston rod 31 is designed as a threaded rod. Threaded holes are formed on both ends of the adapter. The adapter is threadedly connected with the screw 23 and the piston rod 31, respectively. If the screw 23 adopts a hollow structure, an internal thread can be machined in the inner hole of the screw 23 to form an internal threaded hole. The top end of the piston rod 31 is directly threadedly connected with the internal threaded hole of the screw 23.

[0049] A bottom seat 24 is formed on the bottom end of the shell 21, and an ear seat 11 is formed on the top end of the sleeve 1, the bottom seat 24 abuts against the ear seat 11, and the shell 21 is seated on the sleeve 1 when wiping the contact point column 52. The contact area of the bottom seat 24 and the ear seat 11 is increased as much as possible to ensure the stability between the shell 21 and the sleeve 1.

[0050] In actual operation, the sleeve 1 and the piston cylinder 32 are first sleeved on the outside of the contact point column 52, the bottom end of the sleeve 1 abuts against the movable contact seat 51, and then the driving mechanism 2 is seated on the sleeve 1, one hand of the operator holds the sleeve 1, and the other hand holds the handle of the electric drill 22, and the linear reciprocating motion of the piston rod 31 is driven by operating the electric drill 22 to convert the rotary motion into linear motion through the motion reversing assembly.

[0051] Since the piston cylinder 32 is a hollow structure with a cylindrical wall and the wall is thin, it can easily penetrate to the root position of the contact point column 52 in the narrow space between the contact sheet and the contact point column 52, and completely remove the stains at the root position of the contact point column 52.

[0052] The utility model does not need to disassemble the contact point column 52 from the movable contact seat 51, and can complete the wiping of the surface of the contact point column 52, saves the time for disassembling and assembling the contact point column 52, and further improves the wiping efficiency.

[0053] Embodiment 1

[0054] Figure 2 And Figure 3 Simplify the structure of the driving mechanism 2, as shown in Figure 2 And Figure 3 The wall of the piston cylinder 32 is a linear closed structure. The wiping material 4 is a sheet-shaped flexible material, which can be a flexible material such as deerskin and non-woven fabric. The sheet-shaped flexible material is wound around the inner wall of the piston cylinder 32 to a certain thickness, so as to fill between the piston cylinder 32 and the contact point column 52. The sheet-shaped flexible material has a certain internal stress, and can fully cover the contact point column 52 in the circumferential direction, so as to ensure that the sheet-shaped flexible material wipes the root position and the entire circumferential direction of the outer wall of the contact point column 52 with the reciprocating motion of the piston. Through the internal stress of the sheet-shaped flexible material and the high-frequency driving of the driving mechanism 2, the pollutants on the surface of the columnar object can be completely removed, so as to ensure good cleaning effect.

[0055] Embodiment 2

[0056] Figure 4 And Figure 5 Simplify the structure of the driving mechanism 2, as shown in Figure 4 And Figure 5As shown, the difference between Example 2 and Example 1 is that the cylinder wall of the piston cylinder 32 is in an arc-shaped split structure, and all the arc-shaped splits are connected together at the top end of the piston cylinder 32. Each arc-shaped split has a certain elasticity and can release a certain internal stress of the sheet-shaped flexible object.

[0057] The cylinder wall of the piston cylinder 32 in Example 1 is in a closed structure, and the sheet-shaped flexible object is squeezed between the inner wall of the piston cylinder 32 and the joint column 52. When the joint column 52 with different cross-sectional sizes is wiped, the internal stress generated by the sheet-shaped flexible object is inconsistent. When the joint column 52 with a larger diameter is wiped, the internal stress generated by the sheet-shaped flexible object is larger. When the joint column 52 with a smaller diameter is wiped, the internal stress generated by the sheet-shaped flexible object is smaller. In Example 2, the cylinder wall of the piston cylinder 32 is in an arc-shaped split structure. When the joint column 52 with a larger diameter is wiped, the internal stress generated by the sheet-shaped flexible object can be properly released. When the joint column 52 with a smaller diameter is wiped, based on the elastic characteristics of the arc-shaped split structure, the sheet-shaped flexible object maintains a certain force applied to the joint column 52, so as to ensure that the internal stress generated by the sheet-shaped flexible object is not too large or too small.

[0058] Example 3

[0059] Figure 6 The structure of the driving mechanism 2 is simplified, as shown in Figure 6 As shown, the difference between Example 3 and Example 1 is that the wiping object 4 is different. In Example 3, the wiping object 4 is a brush wire, which can be a PBT wire, a polypropylene wire, a nylon wire, a PE wire, horsehair, pig bristles, etc.

[0060] The brush wire is embedded on the cylinder wall of the piston cylinder 32 and covers the cylinder wall, so that the brush wire is filled between the inner wall of the piston cylinder 32 and the joint column 52. The length of the brush wire is greater than the distance between the inner wall of the piston cylinder 32 and the joint column 52, so as to ensure that the brush wire is subjected to a certain squeezing force (i.e., the stress applied by the inner wall of the piston cylinder 32 and the joint column 52). When the brush wire reciprocates with the piston cylinder 32, the joint column 52 is wiped more cleanly.

[0061] Example 4

[0062] Figure 7 The structure of the driving mechanism 2 is simplified, as shown in Figure 7 As shown, the difference between Example 4 and Example 2 is that the wiping object 4 is different. The other structures are the same as those in Example 2. The wiping object 4 used in Example 4 is the same as the wiping object 4 used in Example 3. The brush wire is embedded on each arc-shaped split of the piston cylinder 32.

[0063] The specific embodiments described above do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hand-held column connection point cleaner for cleaning the surface of a column connection point fixed to a base, characterized in that, The sleeve is a hollow structure with an open bottom end, a through hole is arranged at the top end of the sleeve, the sleeve is sleeved outside the piston cylinder, and the bottom end of the sleeve is in contact with the base. The driving mechanism is fixed at the top end of the sleeve, the bottom end of the piston rod is fixedly connected with the top end of the piston cylinder, and the top end of the piston rod is connected with the output end of the driving mechanism through the through hole. The cylinder wall of the piston cylinder is a closed structure or an arc-shaped split structure.

2. The hand-held post connection cleaner of claim 1, wherein, The wiping material is a sheet-shaped flexible material or a brush wire.

3. The hand-held column connection point cleaner according to claim 1 or 2, characterized in that The sheet-shaped flexible material is deerskin or non-woven fabric, and the sheet-shaped flexible material is filled between the piston cylinder and the columnar connection point.

4. The hand-held post connection cleaner of claim 3, wherein, The brush wire is any one of PBT wire, polypropylene wire, nylon wire, PE wire, horsehair, and pig bristle, and the brush wire is inlaid on the cylinder wall of the piston cylinder.

5. The hand-held post connection cleaner of claim 3, wherein, The driving mechanism includes a housing and a driving element, the driving element is a servo air cylinder or a servo electric cylinder, the driving element is fixed in the housing, the output end of the driving element is connected with the top end of the piston rod through an adapter, the bottom end of the housing extends outward to form a bottom seat, the top end of the sleeve extends outward to form an ear seat, and the bottom seat abuts against the ear seat.

6. The handheld post connection cleaner of claim 1, wherein, The housing is integrally formed with a handle.

7. The hand-held post connection cleaner of claim 6, wherein, The driving mechanism includes a housing, a hand drill, and a motion reversing assembly, a tapered hole is arranged at the top end of the housing, the tapered hole cooperates with the taper surface of a drill chuck of the hand drill, the motion reversing assembly is installed in the housing, the motion reversing assembly is connected with the drill chuck of the hand drill and the top end of the piston rod, and is used for converting the rotary motion of the hand drill into the linear reciprocating motion of the piston rod, the bottom end of the housing forms a bottom seat, the top end of the sleeve extends outward to form an ear seat, and the bottom seat abuts against the ear seat.

8. The handheld post connection cleaner of claim 1, wherein, The motion reversing assembly is a ball screw or a planetary roller screw, the ball screw and the planetary roller screw each include a nut and a screw, the nut is fixed in the housing, the top end of the screw is clamped by the drill chuck, and the bottom end of the screw is connected with the top end of the piston rod through an adapter.

9. The hand-held post connection cleaner of claim 8, wherein, An avoiding space for the motion of the piston rod is arranged on the bottom seat.

10. The hand-held post connection cleaner of claim 6 or 8, wherein, ​