Wiping brush for bore of barrel

Abstract

The utility model belongs to the field of body tube maintenance, and particularly relates to a wiping brush of a body tube inner chamber, a combined brush body can be installed on a brush shaft in a relative rotation mode, and brush bristles comprise vertical brush bristles perpendicular to the axial direction of the brush shaft and inclined brush bristles inclined relative to the axial direction of the brush shaft. Vertical bristles and / or inclined bristles are evenly arranged on the side face of the combined brush body in the circumferential direction. One wiping brush or a plurality of wiping brushes which work independently and are sequentially connected in series are arranged, when one wiping brush is arranged, one end of a brush shaft of the wiping brush is detachably connected with one end of the connector, and the other end of the connector is connected with the washing handle rod; when a plurality of wiping brushes are arranged, the adjacent wiping brushes are detachably connected through the brush shafts, the brush shafts at one ends of the serially connected wiping brushes are detachably connected with one end of the connector, and the other end of the connector is connected with the washing handle rod. According to the utility model, brushes meeting different wiping requirements can be formed, a plurality of groups of wiping brushes can be connected in series and combined together for use, the working efficiency and the wiping effect are improved, and the decontamination effect is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of body tube maintenance and maintenance, concretely is a kind of body tube bore's wiping brush. BACKGROUND

[0002] Body tube is the main force carrier in the launching process, withstands high temperature, high pressure powder gas expansion work and the force of projectile band, provides energy and guiding effect for projectile, gives projectile certain initial velocity and direction of fire.Body tube is the key and most valuable component in equipment system, so its maintenance and maintenance work in use, especially the maintenance and maintenance work of body tube bore are very important, directly influence the use efficiency and life of equipment system.

[0003] Body tube bore mainly has the following maintenance and maintenance work in the whole life cycle of body tube:

[0004] One is the unsealing and oil removal before the storage body tube or new use.To prevent equipment rust in body tube bore during transportation or storage, equipment is factory-coated with a layer of sealing oil with very high viscosity and thickness of about 5mm before leaving factory, which prevents internal bore rust and is completely cleaned before shooting.

[0005] Two is the maintenance and maintenance of body tube bore in use process.During training, to prevent body tube bore rust, generally, internal bore protective oil (a kind of thin oil) is applied;Before shooting, protective oil and other foreign matters such as dust, sand, etc. in body tube bore are cleaned;After shooting, there are two cases, one is that the number of launched projectiles is not large, and the amount of copper, gunpowder residue and gas smoke in internal bore is not large, so hot soap water is used for wiping with wiping brush, and then protective oil is applied;The other is that the number of launched projectiles is large, and the amount of copper, gunpowder residue and gas smoke in internal bore is large, so deep cleaning and wiping are carried out with wiping brush and copper removal liquid, and then internal bore protective oil is applied.

[0006] Three is the maintenance and maintenance of body tube bore before entering storage.The first work is to clean and wipe bore, that is, all foreign matters such as copper, gunpowder residue and gas smoke in body tube bore must be cleaned;The second work is to apply sealing oil to body tube bore.

[0007] The above work cannot be separated from the brush for wiping body tube bore, and if the wiping and maintenance work of body tube bore at each stage is not in place, serious and major accidents such as abnormal ablation, bore expansion, bore line peeling and blind fire of fuse may occur during live ammunition shooting, which directly affects the service life of body tube, the interior and exterior ballistic performance of projectile, the reliability of fuse function, the correctness of ammunition loading and other functions and performances.

[0008] Currently, the military generally only equips itself with one type of brush made of pig bristles. The brush holder is made of jujube wood or other hardwoods, and both ends of the brush are connected to the holder via steel end caps and connecting shafts. While the pig bristles have good toughness, they lack rigidity, and the brush itself is quite heavy. When the brush enters the barrel, the lower bristles are all compressed and fall down, while the upper bristles do not make full contact with the barrel (the overlap between the bristles and the barrel is small). This results in insufficient friction during cleaning, leading to poor cleaning efficiency and low effectiveness when removing stubborn stains such as copper residue and gunpowder residue. Of course, pig bristle brushes can still be used for routine training and for cleaning non-stubborn stains such as gas fumes before and after firing, as well as for cleaning and applying protective oil, but their efficiency is low. At the same time, because the wooden brush holder is not resistant to soaking in the brushing liquid, it is easy to cause the brush holder to deform and crack, making it unusable and scrapped. Utility Model Content

[0009] In view of the above-mentioned problems of existing brushes for wiping the inside of the barrel, the purpose of this utility model is to provide a brush for wiping the inside of the barrel.

[0010] The objective of this utility model is achieved through the following technical solution:

[0011] This utility model includes a combined brush body, brush bristles, a brush shaft, and a connector. The combined brush body is rotatably mounted on the brush shaft. The brush bristles include vertical bristles perpendicular to the axial direction of the brush shaft and inclined bristles inclined to the axial direction of the brush shaft. The side of the combined brush body is uniformly provided with vertical bristles and / or inclined bristles along the circumferential direction. The wiping brush can be a single brush working independently or multiple brushes connected in series. When there is a single wiping brush, one end of the brush shaft of the wiping brush is detachably connected to one end of the connector, and the other end of the connector is connected to the washing handle provided with the equipment. When there are multiple wiping brushes, adjacent wiping brushes are detachably connected to each other through the brush shaft. One end of the brush shaft of each wiping brush connected in series is detachably connected to one end of the connector, and the other end of the connector is connected to the washing handle provided with the equipment.

[0012] Wherein: the combined brush body includes a brush base cylinder and a brush seat connected to each other, the brush shaft passes through the brush base cylinder and the brush seat, and the side of the brush base cylinder is uniformly provided with vertical bristles and / or inclined bristles along the circumferential direction.

[0013] The brush holder cylinder is a hollow structure with an opening on one side. The brush holder is inserted into the opening side of the brush holder cylinder. The side of the brush holder cylinder is provided with bristle planting holes for installing vertical bristles and inclined bristles.

[0014] The brush holder cylinder is a hollow cylinder with an opening on one side. The brush holder is disc-shaped. A central hole A is provided in the middle of the brush holder for the brush shaft to pass through. The brush holder has a boss that protrudes outward along the axial direction on the side facing the brush holder cylinder. The boss is inserted from the side of the opening of the brush holder cylinder.

[0015] The combined brush body includes a brush disc and a brush base. The brush shaft passes through the brush disc and the brush base. The sides of the brush disc and the brush base are respectively provided with vertical bristles and / or inclined bristles evenly along the circumferential direction.

[0016] The brush holder is disc-shaped. One outer edge of the brush holder extends radially outward to form an extension A. The diameter of the other side of the brush holder is smaller than the diameter of the extension A, thus forming a boss on the other side of the brush holder. A central hole A is provided in the middle of the brush holder for the brush shaft to pass through. The central hole A is a stepped hole, and the diameter of the central hole A on the side closer to the brush disk is larger than the diameter of the other central holes A. The brush disk is disc-shaped. One middle part of the brush disk extends axially to form an extension B. A central hole B is provided in the middle of the brush disk for the brush shaft to pass through. The central hole B is a stepped hole, and the diameter of the central hole B on the other side of the brush disk is larger than the diameter of the other central holes B. Embedding holes for installing vertical bristles and inclined bristles are respectively provided on the side of the boss and the side of the other side of the brush disk.

[0017] The brush holder is a single unit located on one side of the wiping brush. Multiple brush discs are arranged in the same direction. The extension B on the brush disc closest to the brush holder is inserted into the larger portion of the central hole A. The extensions B on the remaining brush discs are inserted into the larger portions of the central holes B of the adjacent brush discs. The larger portion of the central hole B of the brush disc furthest from the brush holder is filled with a sealing ring. Each brush disc's extension B is fitted with a brush cloth, which is clamped between the brush disc and the brush holder or between brush discs. The outer diameter of the brush cloth is larger than the outer diameter of the brush holder and the brush discs. The brush cloth and bristles together wipe the inner bore of the brush tube.

[0018] There are two brush holders located on both sides of the wiping brush. Two brush discs are arranged in opposite directions between the two brush holders. Each brush disc has a brush cloth sleeved on its extension B. The brush cloth is clamped between the brush disc and the brush holder. The outer diameter of the brush cloth is larger than the outer diameter of the brush holder and the brush disc. The brush cloth and the brush bristles wipe the inner cavity of the tube together.

[0019] Both ends of the brush shaft are located outside the combined brush body. One end of the brush shaft has an axial insertion hole A and a radial pin hole A communicating with the insertion hole A. The shape of the other end of the brush shaft corresponds to the shape of the insertion hole A, and a radial pin hole B is provided at the other end of the brush shaft. When there are multiple wiping brushes, the insertion hole A at one end of each brush shaft is inserted into the other end of the adjacent wiping brush shaft, and the connection is achieved by inserting a connecting pin into the pin hole A and pin hole B. The other end of each brush shaft is inserted into the insertion hole A at one end of the adjacent wiping brush shaft, and the connection is achieved by inserting a connecting pin into the pin hole A and pin hole B.

[0020] One end of the connector has an axial insertion hole B, and another end of the connector has a radial pin hole C that communicates with the insertion hole B; the other end of the connector has an external thread.

[0021] The advantages and positive effects of this utility model are as follows:

[0022] 1. This utility model can create a variety of brushes to meet different wiping needs. The brush shaft and connector adopt a universal design, which can connect multiple sets of wiping brushes together for use, thereby improving work efficiency and wiping effect, and achieving good dirt removal effect.

[0023] 2. The combined brush body of this utility model can be implanted with bristles of different materials. The bristles of different materials have different elastic pressure, which increases the contact area and friction between the bristles and the inner bore, greatly improving the effect and efficiency of removing oil stains from the inner bore of the barrel, and providing a guarantee for improving equipment maintenance and rapid response capabilities.

[0024] 3. This utility model is easy to assemble and disassemble, and easy to replace. Attached Figure Description

[0025] Figure 1 This is a structural cross-sectional view of Embodiment 1 of the present utility model;

[0026] Figure 2 This is a structural cross-sectional view of Embodiment 2 of the present invention;

[0027] Figure 3 These are cross-sectional views of the brush holder in Embodiments 1 and 2 of this utility model;

[0028] Figure 4 This is a structural cross-sectional view of Embodiment 3 of the present invention;

[0029] Figure 5 This is a structural cross-sectional view of Embodiment 4 of the present invention;

[0030] Figure 6 These are cross-sectional views of the brush holder in Embodiments 3 and 4 of this utility model;

[0031] Figure 7 These are cross-sectional views of the brush disk in Embodiments 3 and 4 of this utility model;

[0032] Figure 8 This is a cross-sectional view of the brush shaft of this utility model;

[0033] Figure 9 for Figure 8 Left view of the structure;

[0034] Figure 10 This is a cross-sectional view of the connector of this utility model;

[0035] Figure 11 for Figure 10 Left view of the structure;

[0036] Wherein: 1 is the brush holder cylinder, 2 is the brush holder, 3 is the brush bristles, 4 is the brush shaft, 5 is the connector, 6 is the connecting pin, 7 is the bristle planting hole, 8 is the brush disc, 9 is the brush cloth, 10 is the boss, 11 is the center hole A, 12 is the extension A, 13 is the extension B, 14 is the center hole B, 15 is the sealing ring, 16 is the insertion hole A, 17 is the pin hole A, 18 is the pin hole B, 19 is the insertion hole B, and 20 is the pin hole C. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings.

[0038] This utility model includes a combined brush body, brush bristles 3, a brush shaft 4, and a connector 5. The combined brush body is rotatably mounted on the brush shaft 4. The brush bristles 3 include vertical bristles perpendicular to the axial direction of the brush shaft 4 and inclined bristles inclined to the axial direction of the brush shaft 4. The side of the combined brush body is uniformly provided with vertical bristles and / or inclined bristles along the circumferential direction. The wiping brush can be a single brush working independently or multiple brushes connected in series. When there is a single wiping brush, one end of the brush shaft 4 is detachably connected to one end of the connector 5, and the other end of the connector 5 is connected to the washing handle provided with the equipment. When there are multiple wiping brushes, adjacent wiping brushes are detachably connected through the brush shaft 4. One end of the brush shaft 4 of each wiping brush connected in series is detachably connected to one end of the connector 5, and the other end of the connector 5 is connected to the washing handle provided with the equipment.

[0039] Example 1

[0040] like Figure 1 , Figure 3 As shown, the combined brush body of this embodiment includes a brush base cylinder 1 and a brush base 2 connected to each other. The brush shaft 4 passes through the central hole opened on the brush base cylinder 1 and the brush base 2. The combined brush body can rotate on the brush shaft 4. The side of the brush base cylinder 1 is evenly provided with vertical bristles and inclined bristles along the circumferential direction.

[0041] In this embodiment, the brush holder cylinder 1 is a hollow cylinder with an opening on one side, and the brush holder 2 is disc-shaped. A central hole A11 for the brush shaft 4 to pass through is provided in the middle of the brush holder 2. A boss 10 protruding outward along the axial direction is provided on the side of the brush holder 2 facing the brush holder cylinder 1. The boss 10 is inserted into the opening side of the brush holder cylinder 1 (the boss 10 and the opening side of the brush holder cylinder 1 can be an interference fit). Embedding holes 7 for vertical and inclined bristles are provided on the side of the brush holder cylinder 1. The number of vertical and inclined bristles on the circumference and axial direction of the brush holder cylinder 1 corresponds to the number of negative and positive lines in the barrel bore. In this embodiment, the length of the bristles 3 has the required spring pressure in the barrel bore, meaning the length of the bristles 3 extending out of the brush holder cylinder 1 is greater than the distance between the side of the brush holder cylinder 1 and the barrel bore. The bristles 3 in this embodiment can be PBT filaments or nylon filaments, suitable for wiping the barrel bore before and after firing, and can also be used for preliminary wiping before cleaning the barrel bore. The implantation of the bristles 3 into the bristle implantation hole 7 in this embodiment is existing technology and will not be described in detail here.

[0042] like Figure 8 , Figure 9 As shown, in this embodiment, both ends of the brush shaft 4 are located outside the combined brush body. One end of the brush shaft 4 has an axial insertion hole A16, and a radial pin hole A17 communicating with the insertion hole A16 is also provided at one end of the brush shaft 4. The shape of the other end of the brush shaft 4 corresponds to the shape of the insertion hole A16, and a radial pin hole B18 is provided at the other end of the brush shaft 4. In this embodiment, the insertion hole A16 is an oblong hole, and the end face of the other end of the brush shaft 4 is also oblong (i.e., the top and bottom are flat, and the left and right are curved), and it has the same size as the insertion hole A16. When there are multiple wiping brushes, the insertion hole A16 at one end of each brush shaft 4 is inserted into the other end of the adjacent wiping brush shaft 4, and the connection is achieved by inserting a connecting pin 6 into the pin hole A17 and pin hole B18. The other end of each brush shaft 4 is inserted into the insertion hole A16 at one end of the adjacent wiping brush shaft 4, and the connection is achieved by inserting a connecting pin 6 into the pin hole A17 and pin hole B18.

[0043] like Figure 10 , Figure 11 As shown, in this embodiment, one end of the connector 5 has an axial insertion hole B19, and another end of the connector 5 has a radially connected pin hole C20 that communicates with the insertion hole B19. The insertion hole B19 is also oblong in shape. The other end of the brush shaft 4 is inserted into the insertion hole B19, and the connection is achieved by inserting a connecting pin 6 into the pin hole B18 and the pin hole C20. The other end of the connector 5 has an external thread for threaded connection with the wash handle provided with the equipment.

[0044] In this embodiment, the brush holder cylinder 1 and brush holder 2 can be made of engineering plastic material, which improves the service life of the wiping brush.

[0045] Example 2

[0046] likeFigure 2 As shown, the difference between this embodiment and Embodiment 1 is that the bristles 3 in this embodiment are vertical bristles, that is, only vertical bristles are implanted in the bristle insertion holes 7 opened on the side of the brush holder cylinder 1. The bristles 3 are made of steel wire and cotton rope. The steel wire in this embodiment has the required spring pressure to form a fine wiping brush, which is suitable for polishing and wiping the inner bore after copper removal before sealing. Everything else is the same as in Embodiment 1.

[0047] Example 3

[0048] like Figure 4 , Figure 6 and Figure 7 As shown, the difference between this embodiment and embodiment one is that the combined brush body in this embodiment includes a brush disc 8 and a brush seat 2, and the brush shaft 4 passes through the brush disc 8 and the brush seat 2. The sides of the brush disc 8 and the sides of the brush seat 2 are respectively provided with vertical bristles evenly along the circumferential direction.

[0049] In this embodiment, the brush holder 2 is disc-shaped. One outer edge of the brush holder 2 extends radially outward to form an extension A12. The diameter of the other side of the brush holder 2 is smaller than the diameter of the extension A12, thus forming a boss 10 on the other side of the brush holder 2. The extension A12 prevents the bristles 3 from deforming and collapsing due to their interaction with the bore wall when entering and exiting the bore. A central hole A11 for the brush shaft 4 to pass through is provided in the middle of the brush holder 2. The central hole A11 is a stepped hole, and the diameter of the central hole A11 near the brush disc 8 is larger than the diameter of the other central holes A11. The brush disc 8 is disc-shaped. One side of the brush disc 8 extends axially to form an extension B13. A central hole B14 for the brush shaft 4 to pass through is provided in the middle of the brush disc 8. The central hole B14 is a stepped hole, and the diameter of the central hole B14 on the other side of the brush disc 8 is larger than the diameter of the other central holes B14. Embedding holes 7 for inserting vertical bristles are respectively provided on the side of the boss 10 and the side of the other side of the brush disc 8.

[0050] In this embodiment, there is one brush holder 2, located on one side of the wiping brush. There are multiple brush discs 8 arranged in the same direction. The extension B13 on the brush disc 8 closest to the brush holder 2 is inserted into the larger part of the central hole A11. The extensions B13 on the other brush discs 8 are inserted into the larger part of the central hole B14 of the adjacent brush disc 8. The larger part of the central hole B14 of the brush disc 8 farthest from the brush holder 2 is filled with a sealing ring 15.

[0051] In this embodiment, a brush cloth 9 is fitted on the extension B13 of each brush disc 8. The brush cloth 9 is clamped between the brush disc 8 and the brush seat 2 or between the brush discs 8. The brush cloth 9 can be white chamois cloth. The outer diameter of the brush cloth 9 is larger than the outer diameter of the brush seat 2 and the brush disc 8, and larger than the inner diameter of the body tube. Therefore, the brush cloth 9 and the body tube have the required spring pressure. The brush cloth 9 and the brush bristles 3 wipe the body tube together.

[0052] In this embodiment, the brush holder 2 and brush disc 8 can be made of engineering plastic material, which improves the service life of the wiping brush.

[0053] Everything else is the same as in Example 1.

[0054] Example 4

[0055] like Figure 5 As shown, the difference between this embodiment and Embodiment 4 is that in this embodiment, there are two brush holders 2, located on both sides of the wiping brush. Two brush discs 8 are arranged in opposite directions between the two brush holders 2. A brush cloth 9 is fitted onto the extension B13 of each brush disc 8, and the brush cloth 9 is clamped between the brush disc 8 and the brush holder 2. The bristles 3 in this embodiment are steel wires. Everything else is the same as in Embodiment 3.

[0056] The combined brush body of this utility model is designed to allow free rotation on the brush shaft 4, so as to ensure that the bristles are in full contact with the inner bore of the body tube.

Claims

1. A wiping brush for the inner bore of a tube, characterized in that: The assembly includes a combined brush body, brush bristles (3), a brush shaft (4), and a connector (5). The combined brush body is rotatably mounted on the brush shaft (4). The brush bristles (3) include vertical bristles perpendicular to the axial direction of the brush shaft (4) and inclined bristles inclined to the axial direction of the brush shaft (4). The side of the combined brush body is uniformly provided with vertical bristles and / or inclined bristles along the circumferential direction. The wiping brush is either a single brush that works independently or multiple brushes connected in series. When there is only one wiping brush, one end of the brush shaft (4) of the wiping brush is detachably connected to one end of the connector (5), and the other end of the connector (5) is connected to the washing handle provided with the equipment. When there are multiple wiping brushes, adjacent wiping brushes are detachably connected through the brush shaft (4). One end of the brush shaft (4) of each wiping brush connected in series is detachably connected to one end of the connector (5), and the other end of the connector (5) is connected to the washing handle provided with the equipment. The combined brush body includes a brush holder cylinder (1) and a brush holder (2) connected to each other. The brush shaft (4) passes through the brush holder cylinder (1) and the brush holder (2). The side of the brush holder cylinder (1) is uniformly provided with vertical bristles and / or inclined bristles along the circumferential direction.

2. The wiping brush for the inner bore of the barrel according to claim 1, characterized in that: The brush holder cylinder (1) is a hollow structure with an opening on one side. The brush holder (2) is inserted into the opening side of the brush holder cylinder (1). The side of the brush holder cylinder (1) is provided with a bristle planting hole (7) for installing vertical bristles and inclined bristles.

3. The wiping brush for the inner bore of the barrel according to claim 2, characterized in that: The brush holder cylinder (1) is a hollow cylinder with an opening on one side. The brush holder (2) is disc-shaped. The brush holder (2) has a central hole A (11) in the middle for the brush shaft (4) to pass through. The brush holder (2) has a boss (10) protruding outward along the axial direction on the side facing the brush holder cylinder (1). The boss (10) is inserted from the side of the opening of the brush holder cylinder (1).

4. The wiping brush for the inner bore of the barrel according to claim 1, characterized in that: The combined brush body includes a brush disc (8) and a brush seat (2). The brush shaft (4) passes through the brush disc (8) and the brush seat (2). The sides of the brush disc (8) and the sides of the brush seat (2) are uniformly provided with vertical bristles and / or inclined bristles along the circumferential direction.

5. The wiping brush for the inner bore of the barrel according to claim 4, characterized in that: The brush holder (2) is disc-shaped. One outer edge of the brush holder (2) extends radially outward to form an extension A (12). The diameter of the other side of the brush holder (2) is smaller than the diameter of the extension A (12), thus forming a boss (10) on the other side of the brush holder (2). A central hole A (11) is provided in the middle of the brush holder (2) for the brush shaft (4) to pass through. The central hole A (11) is a stepped hole. The diameter of the central hole A (11) near the brush disk (8) is larger than the diameter of the other central holes A (11). The brush plate (8) is disc-shaped. An extension portion B (13) is formed by extending along the axial direction in the middle of one side of the brush plate (8). A central hole B (14) is provided in the middle of the brush plate (8) for the brush shaft (4) to pass through. The central hole B (14) is a stepped hole. The diameter of the central hole B (14) on the other side of the brush plate (8) is larger than the diameter of the central holes B (14) in other parts. The side of the boss (10) and the side of the brush plate (8) are respectively provided with bristle planting holes (7) for installing vertical bristles and inclined bristles.

6. The wiping brush for the inner bore of the barrel according to claim 5, characterized in that: The brush holder (2) is one, located on one side of the wiping brush. The brush discs (8) are multiple, arranged in the same direction. The extension B (13) on the brush disc (8) closest to the brush holder (2) is inserted into the larger part of the central hole A (11). The extension B (13) on the other brush discs (8) is inserted into the larger part of the central hole B (14) of the adjacent brush disc (8). The larger part of the central hole B (14) of the brush disc (8) farthest from the brush holder (2) is filled with a sealing ring (15). Each extension B (13) of the brush disc (8) is fitted with a brush cloth (9). The brush cloth (9) is clamped between the brush disc (8) and the brush holder (2) or between the brush discs (8). The outer diameter of the brush cloth (9) is larger than the outer diameter of the brush holder (2) and the brush disc (8). The brush cloth (9) and the bristles (3) wipe the inner bore of the tube together.

7. The wiping brush for the inner bore of the barrel according to claim 5, characterized in that: There are two brush holders (2) located on both sides of the wiping brush. Two brush discs (8) are arranged in opposite directions between the two brush holders (2). Each brush disc (8) has a brush cloth (9) on its extension B (13). The brush cloth (9) is clamped between the brush disc (8) and the brush holder (2). The outer diameter of the brush cloth (9) is larger than the outer diameter of the brush holder (2) and the brush disc (8). The brush cloth (9) and the brush bristles (3) wipe the inner cavity of the tube together.

8. The wiping brush for the inner bore of the barrel according to claim 1, characterized in that: Both ends of the brush shaft (4) are located outside the combined brush body. One end of the brush shaft (4) is provided with an insertion hole A (16) along the axial direction, and a pin hole A (17) communicating with the insertion hole A (16) is provided at one end of the brush shaft (4) along the radial direction. The shape of the other end of the brush shaft (4) corresponds to the shape of the insertion hole A (16), and a pin hole B (18) is provided at the other end of the brush shaft (4) along the radial direction. When there are multiple wiping brushes, the insertion hole A (16) at one end of each brush shaft (4) is inserted into the other end of the adjacent wiping brush shaft (4), and the connection is achieved by inserting the connecting pin (6) into the pin hole A (17) and pin hole B (18). The other end of each brush shaft (4) is inserted into the insertion hole A (16) at one end of the adjacent wiping brush shaft (4), and the connection is achieved by inserting the connecting pin (6) into the pin hole A (17) and pin hole B (18).

9. The wiping brush for the inner bore of the barrel according to claim 1, characterized in that: One end of the connector (5) is provided with an insertion hole B (19) along the axial direction, and a pin hole C (20) connected to the insertion hole B (19) is provided at one end of the connector (5) along the radial direction; the other end of the connector (5) is provided with an external thread.

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