Bolt cleaning device and bolt cleaning method

Abstract

The present invention relates to the technical field of bolt cleaning, and in particular to a bolt cleaning device and a bolt cleaning method, comprising a mounting platform, wherein a rotating mechanism is provided at the upper end of the mounting platform, and a clamping mechanism is provided at the opposite end of the rotating mechanism, and the rotating mechanism and the clamping mechanism are used to fix the bolts and drive the bolts to rotate; a cleaning mechanism and an oil flushing device are also provided at the upper end of the mounting platform, wherein the cleaning mechanism is used to clean the surface of the bolts, and the oil flushing device is used to clean the surface of the bolts. The device has a simple structure and is easy to operate, and solves the problem of manual cleaning of shield machine bolts, which is time-consuming and labor-intensive, has a poor cleaning effect, and easily leads to difficulties in bolt installation.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt cleaning, and in particular to a bolt cleaning device and a bolt cleaning method. Background Art

[0002] During the maintenance of the shield machine, in order to ensure the safe and stable operation of the equipment, it is necessary to clean and maintain the flange connection surface, and at the same time, clean, maintain and replace the bolts and nuts. During the maintenance process, since most of the bolts and nuts undergo a series of processes such as dismantling, transportation, and storage of the shield machine, they are severely exposed to rust for a long time without protective measures, which greatly hinders the maintenance work. In the conventional maintenance process, bolt cleaning mainly relies on manual cleaning with a wire brush. Due to the large number of bolts, the size and weight of the bolts, the bolts need to be repeatedly turned over during cleaning to remove rust from the surface of the bolts. The entire operation is labor-intensive and the cleaning speed is slow, and it is not easy to clean every part of the bolt. In some projects with tight schedules, many operators are perfunctory about the bolt cleaning work, resulting in poor cleaning effect, and the bolts after rust removal are rusted by secondary oxidation when in contact with the air. The rust or impurities remaining on the bolts can easily lead to difficulties in bolt installation and tightening, increasing the safety hazards caused by the non-fitting of the flange surface and the failure of the bolts to be tightened.

[0003] To sum up, there is an urgent need for a bolt cleaning device and a bolt cleaning method to solve the problem that the shield machine bolts are large in size and weight, manual cleaning of the shield machine bolts is time-consuming and labor-intensive, the cleaning effect is poor, the rust-removed bolts are secondary oxidized and rusted in contact with the air, and the residual rust or impurities on the bolts easily lead to difficulties in bolt installation. Summary of the invention

[0004] The purpose of the present invention is to provide a bolt cleaning device and a bolt cleaning method to solve the problems that the existing manual cleaning of shield machine bolts is time-consuming and labor-intensive, the cleaning effect is poor, and the rust-removed bolts are secondary oxidized and rusted when in contact with air, which easily leads to difficulties in bolt installation.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A bolt cleaning device comprises a mounting platform, wherein a rotating mechanism is provided at the upper end of the mounting platform, a clamping mechanism is provided at the opposite end of the rotating mechanism, and the rotating mechanism and the clamping mechanism cooperate to fix the bolt and drive the bolt to rotate; a cleaning mechanism and an oil flushing device are also provided at the upper end of the mounting platform, the cleaning mechanism is used for cleaning the surface of the bolt, and the oil flushing device is used for cleaning the surface of the bolt.

[0007] The bolt clamp is fixed between the rotating mechanism and the clamping mechanism. The bolt is driven to rotate by the rotating mechanism. The cleaning structure contacts the rotating bolt and can evenly clean the rust on the bolt surface. The oil flushing device can clean the impurities and oil stains on the bolt after grinding, and the oil flushing device can form an oil film on the bolt surface to isolate the air and prevent the bolt from being oxidized and rusted again, thereby ensuring the installation accuracy of the bolt and ensuring the fit with the flange surface. The device has a simple structure and is easy to operate. It solves the problem of manual cleaning of shield machine bolts, which is time-consuming and labor-intensive, and has poor cleaning effect. The rust-removed bolts are secondary oxidized and rusted in contact with the air, which easily leads to difficulties in bolt installation.

[0008] Preferably, the oil flushing device includes an oil pump, the outlet end of the oil pump is connected to an oil suction hose; the oil flushing device also includes an oil tank, the clamping mechanism is arranged in the oil tank, the oil tank is also provided with a filter screen, and an oil tank is arranged at the lower end of the filter screen. The oil suction hose can lead the clean oil in the oil pump to clean the bolt surface, and the dirty oil generated after cleaning the bolt enters the oil tank after filtering impurities through the filter screen, so as to realize the recycling of the bolt cleaning oil and reduce the cost of bolt cleaning.

[0009] Preferably, a wrapping film device is further provided at the upper end of the mounting platform, and the wrapping film device includes a mounting frame, and a film roller is provided on the mounting frame, and the film roller is used to cover the surface of the bolt with a protective film. A protective film is wrapped around the film roller device, and after the bolt is oil-washed, the protective film is covered on the surface of the bolt by the film roller to further isolate the air and prevent the bolt from oxidation and rust.

[0010] Preferably, the rotating mechanism comprises a control electrical box and a rotating motor, the control electrical box is electrically connected to the rotating motor, and a fixing head is provided at an output end of the rotating motor, the fixing head is used to clamp a bolt.

[0011] Preferably, the clamping mechanism comprises a slide rail, the slide rail is fixedly disposed in the oil tank, a cylinder is disposed at the upper end of the slide rail, and a positioning rod is disposed at the telescopic end of the cylinder.

[0012] Preferably, the clamping mechanism further comprises a pneumatic control device and a foot switch, the foot switch and the pneumatic control device are connected via a control circuit, and the control circuit is arranged in a control electrical box; the pneumatic control device and the cylinder are connected via an air pipe.

[0013] Preferably, the cleaning mechanism includes a fixed rod, which is arranged on one side of the rotating mechanism, and an outer sleeve is provided on the fixed rod, and the outer sleeve is slidably connected to the fixed rod; a mounting rod is also provided on the outer sleeve, and the mounting rod is rotatably connected to the outer sleeve, and a wire brush is provided on the mounting rod.

[0014] Preferably, the outer sleeve is further provided with an adjusting rod, the adjusting rod is located at the lower end of the mounting rod, and the adjusting rod is fixedly connected to the outer sleeve.

[0015] Preferably, a slide groove is provided on the mounting rod, the wire brush is slidably connected to the slide groove, and the wire brush is detachably connected to the mounting rod.

[0016] A bolt cleaning method comprises the following steps:

[0017] S1: Select a fixed head according to the model of the cleaning bolt. The fixed head is installed at the output end of the rotating motor. One end of the bolt is installed on the fixed head of the rotating motor, and the other end is abutted against the positioning rod at the telescopic end of the cylinder; S2: According to the size of the cleaning bolt, adjust the position of the wire brush along the slide groove so that the wire brush is directly above the bolt; S3: Start the rotating motor, drive the outer sleeve to move along the fixed rod through the adjusting rod, and move the wire brush along the axial direction of the bolt; S4: Start the oil flushing device to clean the surface of the bolt; S5: Turn off the rotating motor, and wind the protective film on the surface of the bolt through the winding film device; S6: Control the cylinder to retract through the foot switch to remove the bolt.

[0018] One end of the bolt is installed on the fixed head, and the other end is abutted against the positioning rod at the telescopic end of the cylinder. The bolt is driven to rotate by the rotating motor. The positioning rod can prevent the bolt from shaking during rotation, thereby improving the positioning accuracy of the wire brush for grinding the bolt. According to the size of the bolt, the position of the wire brush 5d is adjusted along the slide groove so that the wire brush is located directly above the bolt. The wire brush is fixed to the mounting rod, and the rotating motor is started. The outer sleeve is driven to move along the fixed rod through the adjusting rod, so that the wire brush on the mounting rod moves along the axial direction of the bolt. The adjusting rod is turned downward to make the wire brush contact with the surface of the rotating bolt, so that the rust on various parts of the bolt surface can be polished. The traces are clean. Through the oil flushing device, an oil film can be formed on the bolt surface while cleaning the impurities and oil stains on the bolt surface. It has good anti-oxidation function and prevents the bolt from rusting. After turning off the rotating motor, the film roller is rotated along the mounting frame. The film is close to the bolt. The inertial rotating bolt can wind the film onto the bolt. The film has the function of isolating air, so the bolt can be stored for a long time after rust removal. The cylinder shrinks and the bolt is removed to complete the rust removal and air isolation treatment of the bolt. This method can effectively clean the surface of the bolt and prevent the bolt from rusting due to long-term storage by isolating the air.

[0019] Compared with the prior art, the advantages of the present invention are: a bolt cleaning device and a cleaning method of the present invention, the cleaning structure can evenly clean the rust on the entire bolt surface, the oil flushing device can form an oil film on the bolt surface, which has the function of isolating the air and preventing the bolt from being oxidized and rusted again, thereby ensuring the installation accuracy of the bolt and ensuring the fit with the flange surface.

[0020] While cleaning the impurities and oil stains on the surface of the bolt, an oil film can be formed on the surface of the bolt, which has a good anti-oxidation function and prevents the bolt from rusting. After turning off the rotating motor, the film roller is rotated along the mounting frame, and the film is close to the bolt. The bolt rotating by inertia can wind the film onto the bolt. The film has the function of isolating the air, so that the bolt can be stored for a long time after rust removal. The cylinder is retracted, the bolt is removed, and the rust removal and air isolation treatment of the bolt are completed. This method can effectively clean the surface of the bolt, and by isolating the air treatment, it can prevent the bolt from rusting due to long-term storage.

[0021] The beneficial effects of other embodiments of the present application are:

[0022] 1. The oil suction hose can lead the clean oil in the oil pump to clean the bolt surface. The dirty oil generated after cleaning the bolt will enter the oil tank after filtering impurities through the filter, realizing the recycling of the bolt cleaning oil and reducing the cost of bolt cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic structural diagram of a bolt cleaning device.

[0024] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention.

[0025] Figure 3 Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0026] Reference numerals

[0027] 1-installation platform, 2-rotation mechanism, 2a-control electric box, 2b-rotation motor, 2c-fixed head, 3-clamping mechanism, 3a-slide rail, 3b-cylinder, 3c-positioning rod, 3d-pneumatic control device, 4-bolt, 5-cleaning mechanism, 5a-fixed rod, 5b-outer sleeve, 5c-installation rod, 5c1-slideway, 5d-wire brush, 5e-adjusting rod, 6-oil flushing device, 6a-oil pump, 6b-oil suction hose, 6c-oil tank, 6d-filter screen, 6e-oil tank, 7-wrap film device, 7a-mounting frame, 7b-film roller. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Example 1

[0030] like Figure 1 , Figure 2 and Figure 3 The embodiment shown in the figure is a bolt cleaning device and a cleaning method, comprising a mounting platform 1, wherein a rotating mechanism 2 is provided at the upper end of the mounting platform 1, and a clamping mechanism 3 is provided at the opposite end of the rotating mechanism 2, wherein the rotating mechanism 2 and the clamping mechanism 3 cooperate to clamp and drive the bolt 4 to rotate; a cleaning mechanism 5 and an oil flushing device 6 are also provided at the upper end of the mounting platform 1, wherein the cleaning mechanism 5 is used to clean the surface of the bolt 4, and the oil flushing device 6 is used to clean the surface of the bolt 4, wherein the bolt 4 is clamped and fixed between the rotating mechanism 2 and the clamping mechanism 3, and the bolt 4 is driven to rotate by the rotating mechanism 2, and the cleaning structure 5 contacts the surface of the rotating bolt 4, and can clean the rust on the surface of the bolt 4, and the size and weight of the bolt 4 of the shield machine are The biggest feature is that the use of this device is more efficient than the conventional method of turning over the bolt 4 and grinding and derusting the bolt 4, which improves the derusting efficiency of the bolt 4 and reduces the amount of manual labor. The oil flushing device 6 can clean the impurities and oil stains attached to the bolt 4 after grinding, and can form an oil film on the surface of the bolt 4, which has the function of isolating the air, avoiding the secondary oxidation of the bolt 4 after rust removal, keeping the surface of the bolt 4 smooth, ensuring the installation accuracy of the bolt 4 and ensuring the fit between the bolt 4 and the flange surface. The device has a simple structure and is easy to operate. It solves the problem of manual cleaning of the bolt 4 of the shield machine, which is time-consuming and labor-intensive, and has a poor cleaning effect. The bolt 4 after rust removal is oxidized and rusted in contact with the air, which easily leads to the difficulty of installing the bolt 4.

[0031] Example 2

[0032] like Figure 1 , Figure 2 and Figure 3 In the embodiment shown, the oil flushing device 6 includes an oil pump 6a, and the outlet end of the oil pump 6a is connected to an oil suction hose 6b; the oil flushing device 6 also includes an oil tank 6c, and the clamping mechanism 3 is arranged in the oil tank 6c. A filter screen 6d is also provided in the oil tank 6c, and an oil tank 6e is provided at the lower end of the filter screen 6d. The oil suction hose 6b has good flexibility and can lead the clean oil in the oil pump 6a to clean impurities and oil stains in various parts of the bolt 4. The clamping mechanism 3 is arranged in the oil tank 6c. When cleaning the bolt 4, it can avoid overflow of clean oil to pollute the operating environment. A filter screen 6d is also provided in the oil tank 6c. The dirty oil generated after cleaning the bolt 4 is filtered by the filter screen 6d and enters the oil tank 6e, so that the dirty oil is recycled and the cleaning cost of the bolt 4 is reduced.

[0033] Example 3

[0034] like Figure 1 , Figure 2 and Figure 3In the embodiment shown, a wrapping film device 7 is further provided at the upper end of the mounting platform 1, and the wrapping film device 7 includes a mounting frame 7a, on which a film roller 7b is provided, and the film roller 7b is used to cover the surface of the bolt 4 with a protective film, and a protective film layer is wound on the film roller 7b. After the bolt 4 is cleaned with oil, the surface of the bolt 4 is covered with a protective film by the film roller 7b to further isolate the air. The bolt 4 treated with the film can remain rust-free for several years, thereby extending the storage time of the bolt 4 after rust removal.

[0035] Example 4

[0036] like Figure 1 , Figure 2 and Figure 3 In the embodiment shown, the rotating mechanism 2 includes a control box 2a and a rotating motor 2b, wherein the control box 2a is electrically connected to the rotating motor 2b, and the control box 2a controls the opening and closing of the rotating motor 2b. A fixed head 2c is provided at the output end of the rotating motor 2b, and one end of the bolt 4 is clamped by the fixed head 2c to stabilize the bolt 4. The clamping mechanism 3 includes a slide rail 3a, and the slide rail 3a is fixedly arranged in the oil groove 6c. A cylinder 3b is provided at the upper end of the slide rail 3a. After the cylinder 3b moves into position, a detachable fixing plate is used to connect and position the cylinder 3b. The telescopic end of the cylinder 3b A positioning rod 3c is provided, and the clamping mechanism 3 also includes a pneumatic control device 3d and a foot switch. The foot switch is connected to the pneumatic control device 3d by a control circuit, and part of the control circuit is arranged in the control electrical box 2a; the pneumatic control device 3d is connected to the cylinder 3b by an air pipe, and the cylinder 3b moves on the slide rail 3a, and can adjust the distance between the fixed head 2c and the positioning rod 3c, and can be used to clamp and fix bolts 4 of different lengths, thereby expanding the application scope of the device. The foot switch controls the movement of the cylinder through the pneumatic control device 3d, which facilitates the installation of the bolt 4 and the disassembly operation after rust removal.

[0037] Example 5

[0038] like Figure 1 , Figure 2 and Figure 3The cleaning mechanism 5 shown in the present embodiment includes a fixed rod 5a, which is arranged on one side of the rotating mechanism 2. The fixed rod 5a is provided with an outer sleeve 5b, which is slidably connected to the fixed rod 5a; the outer sleeve 5b is also provided with a mounting rod 5c, which is rotatably connected to the outer sleeve 5b, and a wire brush 5d is provided on the mounting rod 5c. The mounting rod 5c is rotated along the outer sleeve 5b to make the wire brush 5d close to the surface of the bolt 4. During the rust removal process, the outer sleeve 5b reciprocates along the fixed rod 5a, driving the wire brush 5d to reciprocate along the axial direction of the bolt 4, so as to repeatedly polish the rust on the surface of the bolt 4 until the surface of the bolt 4 is visible to the naked eye. The whole process is simple to operate and can achieve the purpose of quickly removing rust from the surface of the bolt 4.

[0039] Example 6

[0040] like Figure 1 , Figure 2 and Figure 3 In the embodiment shown, an adjusting rod 5e is further provided on the outer sleeve 5b, and the adjusting rod 5e is located at the lower end of the mounting rod 5c. The adjusting rod 5e is fixedly connected to the outer sleeve 5b, and a slide groove 5c1 is provided on the mounting rod 5c. The wire brush 5d can move along the slide groove 5c1, and the wire brush 5d is detachably connected to the mounting rod 5c. According to the diameter of the bolt 4, the position of the wire brush 5d in the slide groove 5c1 is adjusted so that the wire brush 5d is located at the top of the bolt 4, and the adjusting rod 5e is rotated downward clockwise so that the wire brush 5d is subjected to a vertical downward force. The wire brush 5d can remove rust on the surface of the bolt 4 under the smaller force of the adjusting rod 5e, thereby further reducing the labor intensity of the operator.

[0041] Example 7

[0042] like Figure 1 , Figure 2 and Figure 3The bolt cleaning method of the device shown in the embodiment includes the following steps: S1: select a fixed head 2c according to the model of the cleaning bolt 4, the fixed head 2c is installed at the output end of the rotating motor 2b, one end of the bolt 4 is installed on the fixed head 2c of the rotating motor 2b, and the other end is abutted against the positioning rod 3c of the telescopic end of the cylinder 3b; S2: according to the size of the cleaning bolt 4, adjust the position of the wire brush 5d along the slide groove 5c1, and place the wire brush 5d at the upper end of the bolt 4; S3: start the rotating motor 2b, and drive the outer sleeve 5b along the fixed rod 5c1 through the adjusting rod 5e. a moves, so that the wire brush 5d moves along the axial direction of the bolt 4 to clean the rust on the surface of the bolt 4; S4: start the oil flushing device 6 to clean the impurities and oil stains on the surface of the bolt 4; S5: turn off the rotating motor 2b, and wrap the protective film on the surface of the bolt 4 through the wrapping film device 7; S6: the cylinder 3b contracts, and the bolt 4 is removed. One end of the bolt 4 is installed on the fixed head 2c, and the other end is in contact with the positioning rod 3c at the telescopic end of the cylinder 3b. The bolt 4 is driven to rotate by the rotating motor 2b. The positioning rod 3c can prevent the bolt 4 from shaking during rotation, thereby improving the grinding of the bolt 4 by the wire brush 5d. According to the size of the bolt 4, the position of the wire brush 5d is adjusted along the slide groove 5c1 so that the wire brush 5d is located just above the bolt 4, the wire brush 5d is fixed on the mounting rod 5c, the rotating motor 2b is started, and the outer sleeve 5b is driven to move along the fixing rod 5a through the adjusting rod 5e, so that the wire brush 5d on the mounting rod 5c moves axially along the bolt 4, and the adjusting rod 5e is turned downward to make the wire brush 5d contact with the surface of the rotating bolt 4, so that the rust on various parts of the surface of the bolt 4 can be polished clean, and the impurities and oil stains on the surface of the bolt 4 can be cleaned through the oil flushing device 6. When the film is applied to the bolt 4, an oil film can be formed on the surface of the bolt 4, which has a good anti-oxidation function and prevents the bolt 4 from rusting. After turning off the rotating motor 2b, the film roller 7b is rotated along the mounting frame 7a, and the film is close to the bolt 4. The bolt 4 rotating by inertia can wind the film onto the bolt 4. The film has the function of isolating the air, so that the bolt 4 can be stored for a long time after rust removal. The cylinder 3b is contracted, and the bolt 4 is removed, completing the rust removal and air isolation treatment of the bolt 4. This method can effectively clean the surface of the bolt 4, and through air isolation treatment, it can prevent the bolt 4 from rusting due to long-term storage.

[0043] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention should be included in the scope of the claims of the present invention.

Claims

1. A bolt cleaning device, comprising a mounting platform (1), characterized in that: A rotating mechanism (2) is provided at the upper end of the mounting platform (1), and a clamping mechanism (3) is provided at the opposite end of the rotating mechanism (2). The rotating mechanism (2) and the clamping mechanism (3) cooperate to fix the bolt (4) and drive the bolt (4) to rotate. A cleaning mechanism (5) and an oil flushing device (6) are also provided at the upper end of the mounting platform (1). The cleaning mechanism (5) is used to clean the surface of the bolt (4), and the oil flushing device (6) is used to clean the surface of the bolt (4). The oil flushing device (6) comprises an oil pump (6a), and an oil suction hose (6b) is connected to the outlet end of the oil pump (6a). The oil flushing device (6) also comprises an oil tank (6c), and the clamping mechanism (3) is arranged in the oil tank (6c). A filter screen (6d) is also provided in the oil tank (6c), and a filter screen (6d) is provided at the lower end of the filter screen (6d). An oil tank (6e) is provided; a wrapping film device (7) is also provided at the upper end of the mounting platform (1); the wrapping film device (7) comprises a mounting frame (7a); a film roller (7b) is provided on the mounting frame (7a); the film roller (7b) is used to cover the surface of the bolt (4) with a protective film; the rotating mechanism (2) comprises a control box (2a) and a rotating motor (2b); the control box (2a) is electrically connected to the rotating motor (2b); a fixed head (2c) is provided at the output end of the rotating motor (2b); the fixed head (2c) is used to clamp the bolt (4); the clamping mechanism (3) comprises a slide rail (3a); the slide rail (3a) is fixedly arranged in the oil tank (6c); a cylinder (3b) is provided at the upper end of the slide rail (3a); a positioning rod (3c) is provided at the telescopic end of the cylinder (3b).

2. A bolt cleaning device according to claim 1, characterized in that: The clamping mechanism (3) further comprises a pneumatic control device (3d) and a foot switch, wherein the foot switch and the pneumatic control device (3d) are connected via a control circuit, and the control circuit is arranged in a control electrical box (2a); the pneumatic control device (3d) and the cylinder (3b) are connected via an air pipe.

3. A bolt cleaning device according to claim 2, characterized in that: The cleaning mechanism (5) comprises a fixed rod (5a), the fixed rod (5a) being arranged on one side of the rotating mechanism (2), the fixed rod (5a) being provided with an outer sleeve (5b), the outer sleeve (5b) being slidably connected to the fixed rod (5a); a mounting rod (5c) being further arranged on the outer sleeve (5b), the mounting rod (5c) being rotatably connected to the outer sleeve (5b), and a wire brush (5d) being arranged on the mounting rod (5c).

4. A bolt cleaning device according to claim 3, characterized in that: The outer sleeve (5b) is also provided with an adjustment rod (5e), ​​the adjustment rod (5e) is located at the lower end of the mounting rod (5c), and the adjustment rod (5e) is fixedly connected to the outer sleeve (5b).

5. A bolt cleaning device according to claim 4, characterized in that: The mounting rod (5c) is provided with a sliding groove (5c1), the wire brush (5d) is slidably connected to the sliding groove (5c1), and the wire brush (5d) is detachably connected to the mounting rod (5c).

6. A bolt cleaning method, characterized in that: A bolt cleaning device as claimed in claim 5 comprises the following steps: S1: Select a fixed head (2c) according to the model of the cleaning bolt (4), the fixed head (2c) is installed at the output end of the rotating motor (2b), one end of the bolt (4) is installed on the fixed head (2c) of the rotating motor (2b), and the other end is abutted against the positioning rod (3c) at the telescopic end of the cylinder (3b); S2: According to the size of the cleaning bolt (4), adjust the position of the wire brush (5d) along the slide groove (5c1) so that the wire brush (5d) is located directly above the bolt (4); S3: Start the rotating motor (2b), drive the outer sleeve (5b) to move along the fixed rod (5a) through the adjustment rod (5e), ​​and move the wire brush (5d) along the axial direction of the bolt (4); S4: Start the oil flushing device (6) to clean the surface of the bolt (4); S5: Turn off the rotating motor (2b), and wind a protective film on the surface of the bolt (4) through the winding film device (7); S6: Control the cylinder (3b) to retract through the foot switch to remove the bolt (4).

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