Pipe fitting inner wall lubricating equipment

Abstract

The utility model provides pipe fitting inner wall lubricating equipment which comprises a base used for bearing the bottom end of a round pipe, an oil smearing part matched with an inner cavity of the round pipe in shape is arranged below the base, the oil smearing part is connected with a linear power mechanism, and the linear power mechanism can drive the oil smearing part to move up and down in the round pipe. The oil smearing part and the oil smearing ring are driven by the linear power mechanism to lubricate and smear oil on the inner wall of the circular pipe, so that the lubricating range and track of the inner wall of the circular pipe are precisely controllable, the phenomenon of oil contamination or uneven lubrication in the circular pipe is avoided, and the lubricating quality of the interior of the pipe fitting is improved.

Description

Technical Field

[0001] The utility model relates to the field of lubrication equipment, in particular to a pipe inner wall lubrication equipment. Background Art

[0002] In order to prevent rust and lubricate, many pipe fittings need to be lubricated inside. The existing lubrication methods on the market are mostly to squeeze out the grease and then apply it directly, but the required application position is on the inner wall of the long pipe fitting, and it is impossible to achieve uniform application in actual operation. For example, in a round pipe fitting, since the inner wall of the round pipe is a curved arc, it will increase the difficulty of application, and there will be accumulation of unapplied grease, which is very wasteful; and since the scope of oiling cannot be controlled, even the places that do not need to be oiled will be covered with grease. The subsequent parts connected to the inner wall of the pipe fitting will easily be stained with grease after entering the round pipe. When the grease dries, it will form oil stains on the inner wall of the round pipe, affecting the performance of the round pipe.

[0003] Therefore, we need a round tube inner wall oiling equipment that can quickly and evenly apply oil to the inner wall of the round tube to avoid corners without oil or oil accumulation. At the same time, the structure is relatively simple, the processing difficulty is low, the cost is reduced, and the oiling range can be controlled to avoid contamination to positions that do not need oiling, reduce waste, and ensure that it will not affect the appearance of the product. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a pipe inner wall lubrication device, which drives the oiling part and the oiling ring to lubricate the inner wall of the circular tube through a linear power mechanism, so that the lubrication range and trajectory of the inner wall of the circular tube can be accurately controlled, avoiding the occurrence of oil stains or uneven lubrication in the circular tube, and improving the lubrication quality inside the pipe.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A pipe inner wall lubrication device comprises a base for supporting the bottom end of a round pipe, an oiling portion matching the shape of the inner cavity of the round pipe is arranged below the base, the oiling portion is connected to a linear power mechanism, and the linear power mechanism can drive the oiling portion to move up and down inside the round pipe; at least one oil outlet groove for grease to flow out is arranged on the side wall of the oiling portion, and an oiling ring that fits the inner wall of the round pipe is arranged on the top of the oiling portion;

[0007] The device has a preparation state and an oiling state. When the device is in the preparation state, the oiling part can rise to the top of the round tube under the action of the linear power mechanism, at which time the oil outlet groove starts to flow out grease, and the grease forms an adherent oil layer on the inner wall of the top of the round tube; when the device is switched to the oiling state, the oil outlet groove stops flowing out grease, at which time the oiling part can move downward to the bottom of the round tube under the action of the linear power mechanism, and drive the oiling ring to evenly spread the adherent oil layer on the inner wall of the round tube.

[0008] Preferably, the grease ring protrudes outward from the surface of the grease portion and forms an interference fit with the inner wall of the circular tube; the grease ring with interference fit can better fit the inner wall of the circular tube, making the grease application effect more uniform.

[0009] Preferably, the greasing ring is a flexible rubber ring made of elastic material; the flexible rubber ring has low cost and is easy to replace, and will not scratch the inner wall of the steel pipe when it fits against the inner wall of the round pipe to apply grease.

[0010] Preferably, a fixing plate is provided above the highest point of the up and down moving path of the greasing part, which can press the round tube, thereby forming a two-way limit for the round tube in the vertical direction with the base; to ensure that the round tube will not fall over or deflect when the greasing ring is applying grease.

[0011] Preferably, a vertical plate is arranged beside the base, a horizontal plate is fixedly connected to the top of the vertical plate, and the fixed plate is connected to the horizontal plate;

[0012] Preferably, a driving mechanism is provided on the transverse plate, and the driving mechanism is connected to the fixed plate. The driving mechanism can drive the fixed plate to move up and down to compress round tubes of different lengths; the driving mechanism can control the fixed plate to adjust the clamping force of the tube, and can also enable the oiling part to lubricate steel tubes of different lengths, which can not only keep the round tube stable, but also enhance the versatility of the steel tube lubrication equipment.

[0013] Preferably, the bottom end of the oiling portion is connected to a vacuum oil delivery pipe for delivering oil to the oil outlet groove, so that the oiling groove on the oiling portion can stably flow out grease.

[0014] Preferably, the vacuum oil pipe is a rigid tube, and a fixed block is connected to the vacuum oil pipe, and the linear power mechanism is connected to the fixed block to drive the vacuum oil pipe and the oiling part to move synchronously in the vertical direction; the rigid vacuum oil pipe is both an oil pipe fitting of the oiling part and a connecting support part connected between the linear power mechanism 0 and the oiling part. The design is ingenious and achieves two goals at one stroke.

[0015] Preferably, the linear power mechanism includes a vertical screw and a motor threadedly connected to the fixed block, and the motor can drive the vertical screw to rotate to drive the vacuum oil pipe and the oiling part to move synchronously in the vertical direction; so that the oiling part moves longitudinally in the circular tube, so that the longitudinal lubrication length of the inner wall of the circular tube can be controlled.

[0016] The principle and beneficial effects of the utility model using the above technical solution are:

[0017] The utility model provides a device for lubricating the inner wall of a pipe fitting. Compared with lubrication performed manually, the device drives an oiling portion and an oiling ring to move longitudinally on the inner wall of a circular pipe through a linear power mechanism to lubricate the inner wall of the circular pipe, thereby avoiding the problem of poor lubrication effect inside the circular pipe, making the lubrication range and trajectory of the inner wall of the circular pipe accurately controllable, making the lubricating oil layer in the circular pipe more flat and uniform, and improving the lubrication quality inside the pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the lubrication equipment for the inner wall of the pipe fitting;

[0019] Figure 2 This is the lower internal structure diagram of the pipe inner wall lubrication equipment;

[0020] Figure 3 It is an exploded view of the components on the oil coating part in Example 1;

[0021] Figure 4 It is an exploded view of the components on the oil coating part in Example 2;

[0022] Figure 5 It is a schematic diagram of the structure of the rotating groove on the placement block;

[0023] Figure 6a It is a front view of the oiling part;

[0024] Figure 6b is a cross-sectional view of the oil supply passage at the lower end of the oil coating portion;

[0025] Figure 7a It is a side view of the oil-coated portion;

[0026] Figure 7b is a cross-sectional view of the oil supply passage at the upper end of the oil coating portion;

[0027] Figure 8 It is a structural diagram of the oiling part;

[0028] Fig. 9 It is a cross-sectional view of the oil outlet groove in the oiling part;

[0029] Fig.10 The schematic diagram is a schematic diagram of the oiling part and the oiling gap formed between the oiling part and the pipe wall;

[0030] The figures are marked as follows: 1-base, 2-oiling part, 3-oiling part, 4-vacuum oil delivery pipe, 5-fixed block, 6-linear power mechanism, 7-chassis, 8-fixed plate, 9-guide rod, 10-driving mechanism, 11-square tube, 12-round tube, 13-vertical plate, 14-horizontal plate, 21-oiling body, 22-plug, 23-smearing piece, 24-placement block, 25-oil outlet, 26-rotation groove, 27-avoidance hole, 28-placement groove, 31-oiling body, 32-oil outlet groove, 33-oiling ring, 34-oil control groove, 211-jack, 212-oil supply channel, 231-rotating shaft, 241-notch, a-oil outlet gap, s-oil inlet hole. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1-10 As shown, the utility model has multiple embodiments, and the specific implementation methods are as follows:

[0034] Embodiment 1: The utility model provides a pipe inner wall lubrication device, which is provided with a round tube lubrication device, which includes a base 1 for supporting the bottom end of a round tube 12, and an oiling portion 3 matching the inner shape of the round tube 12 is provided below the base 1, and the oiling portion 3 is cylindrical; the oiling portion 3 is connected to a linear power mechanism 6, and to ensure that the linear power mechanism 6 can work normally, the linear power mechanism 6 is arranged inside a chassis 7 below the base 1, and the linear power mechanism 6 can drive the oiling portion 3 to move up and down inside the round tube 12.

[0035] Further, if Figure 8 As shown, at least one oil outlet groove 32 for grease to flow out is provided on the side wall of the oiling portion 3, and an oiling ring 33 that fits with the inner wall of the circular tube 12 is provided at the top of the oiling portion 3; specifically, in order to ensure the oiling effect, the oil outlet groove 32 can be arranged around the outer wall of the cylindrical oiling portion 3 to form an oiling effect on all sides; in order to ensure smooth oil discharge, the oil outlet groove 32 is not tightly fitted with the inner wall of the circular tube 12, but an oil outlet gap a is left, and the oil outlet gap a allows the oil outlet groove 33 close to the inner wall of the circular tube 12 to have a certain oil outlet space to avoid clogging of the grease flowing out of the oil outlet groove 33.

[0036] Furthermore, the device has a preparatory state and an oiling state. When the device is in the preparatory state, the oiling portion 3 can rise to the top of the circular tube 12 under the action of the linear power mechanism 6. At this time, the oil outlet groove 32 starts to flow out grease, and the grease forms an adherent oil layer on the inner wall of the top of the circular tube 12; when the device is switched to the oiling state, the oil outlet groove 32 stops flowing out grease. At this time, the oiling portion 3 can move downward to the bottom of the circular tube 12 under the action of the linear power mechanism 6, and drive the oiling ring 33 to evenly apply the adherent oil layer on the inner wall of the circular tube 12.

[0037] Furthermore, the oiling portion 3 includes a cylindrical oiling body 31, and the oil outlet groove 33 is arranged in the surrounding directions of the circular side wall of the oiling body 31. In order to make the position of the grease flowing out of the oil outlet groove 33 controllable, an oil control groove 34 is formed inwardly on the side wall of the oiling body 31. The oil control groove 34 can prevent the grease flowing out of the oil outlet groove 33 from spreading along both sides, but be confined in the oil control groove 34.

[0038] Furthermore, an oiling ring 33 is connected to the side wall above the oiling body 31. In order to evenly apply the grease, the oiling ring 33 protrudes outward from the surface of the oiling portion 3 and forms an interference fit with the inner wall of the circular tube 12. The interference fit oiling ring 33 can better fit the inner wall of the circular tube 12, so that when the grease is applied to the inner wall of the circular tube 12, there will be no uneven grease or grease accumulation.

[0039] Furthermore, in order to ensure that the inner wall of the circular tube 12 will not be scratched by the greasing ring 33, the greasing ring 33 is configured as a flexible rubber ring made of elastic material, that is, a commonly used O-type rubber ring; specifically, the circular side wall above the greasing body 31 is recessed inward to form a groove, and the flexible greasing ring 33 is stuck in the groove and remains fixed. Since the flexible rubber ring has a low cost and is easy to replace, it will not produce hard contact with the inner wall of the circular tube 12 when it is fitted with grease for greasing. Therefore, the flexible greasing ring 33 can not only achieve the purpose of greasing, but also protect the inner wall of the circular tube 12.

[0040] Further, if Figure 1-2 As shown, in order to keep the round tube 12 stable during lubrication, a fixing plate 8 is provided above the highest point of the up and down moving path of the greasing portion 3, that is, the top end of the round tube 12. The fixing plate 8 can press the round tube 12, thereby forming a two-way limit for the round tube 12 in the vertical direction with the base 1; to ensure that the round tube 12 will not fall over or deflect when the greasing ring is applying grease.

[0041] Furthermore, the fixed plate 8 is arranged at the top of the circular tube 12 as follows: a vertical plate 13 is set up at the side position of the base 1, and a horizontal plate 14 is fixedly connected to the top of the vertical plate 13, and the fixed plate 8 is connected to the horizontal plate 14; and in order to enable the device to lubricate steel pipes of different lengths and adjust the clamping force of the fixed plate 8 on the top of the circular tube 12, a driving mechanism 10 is provided on the horizontal plate 14. The driving mechanism 10 is a cylinder that can be longitudinally extended. The driving mechanism 10 is connected to the fixed plate 8 and can drive the fixed plate 8 to move up and down to clamp the circular tubes 12 of different lengths; the driving mechanism 10 can control the fixing plate 8 to adjust the clamping force of the pipe, and can also enable the oiling part 3 to lubricate the steel pipes of different lengths, which can not only keep the circular tube 12 stable, but also enhance the versatility of the steel pipe lubrication equipment.

[0042] Furthermore, in order to ensure that the fixed plate 8 can move up and down stably, a guide rod 9 is connected to the upper end of the fixed plate 8, and the upper end of the guide rod 9 is slidably connected to the cross plate 14. When the driving mechanism 10 drives the fixed plate 8 to move longitudinally, the guide rod 9 can play a guiding role similar to a guide rail, so that the fixed plate 8 can move longitudinally more smoothly and stably.

[0043] Further, if Figure 2 , Fig. 9 As shown, in order to ensure that the oil outlet groove 33 on the oiling part 3 can stably flow out the grease, the bottom end of the oiling part 3 is provided with an oil inlet hole a, which is connected to the oil outlet groove 33, and the oil inlet hole a is connected to a vacuum oil delivery pipe 4 for delivering oil to the oil outlet groove 33; the bottom end of the vacuum oil delivery pipe 4 is connected to a servo oil supply device (not shown), which is a grease delivery and supply device, and the servo oil supply device can stably deliver the prepared appropriate amount of grease to the oil outlet groove 33 through the vacuum oil delivery pipe 4.

[0044] Furthermore, if the vacuum oil pipe 4 is a soft rubber tube, it can also supply oil to the oil outlet groove 33. However, considering that the oiling part 3 moves up and down in the circular tube 12, the vacuum oil pipe 4 also needs to enter the circular tube 12. Therefore, in order to avoid interference or collision between the soft vacuum oil pipe 4 and the circular tube 12, the vacuum oil pipe 4 is configured as a rigid hard tube, and a fixed block 5 is connected to the vacuum oil pipe 4, and the linear power mechanism 6 is connected to the fixed block 5 to drive the vacuum oil pipe 4 and the oiling part 3 to move synchronously in the vertical direction; the rigid vacuum oil pipe 4 is both an oil pipe fitting of the oiling part 3 and a connecting support member connected between the linear power mechanism 10 and the oiling part 3. This design not only ensures that the oil outlet groove 33 can achieve stable oil discharge through the vacuum oil pipe 4, but also avoids the interference and collision problems of the vacuum oil pipe 4 in the circular tube 12.

[0045] Furthermore, the linear power mechanism 6 includes a vertical screw and a motor threadedly connected to the fixed block 5. The motor can drive the vertical screw to rotate. Specifically, the motor drives the vertical screw through a belt transmission device. After the screw rotates, it can drive the vacuum oil pipe 4 and the oiling part 3 to move synchronously in the vertical direction; this design enables the oiling part 3 to move longitudinally in the circular tube 12, so that the longitudinal lubrication length of the inner wall of the circular tube 12 can be controlled.

[0046] Furthermore, the lubrication equipment also includes a square tube lubrication device arranged on the side of the oiling portion 3, the lubrication device includes an oiling portion 2, an oil inlet s is also provided below the oiling portion 2, the oil inlet s is also independently connected to the corresponding vacuum oil pipe 4, the servo oil supply device and the linear power mechanism 6, and a driving mechanism 10 and a fixing plate 8 are also provided at the upper end of the square tube 11. In short, the square tube lubrication device is different from the round tube lubrication device in the structure of the oiling portion 2. The oiling portion 2 includes an oiling body 31 that matches the inner cavity contour of the square tube 11. The oiling body 31 is in the shape of a rectangular parallelepiped or a cube, and at least one oil outlet 25 for discharging grease is provided on the side wall of the oiling body 31, and a smearing member 23 that is close to the corresponding inner wall of the square tube is provided below the oil outlet 25.

[0047] Furthermore, the device has a rough coating state and a fine coating state. When the device is in the rough coating state, the lifting power mechanism 6 drives the oiling portion 2 to move upward along the bottom of the square tube to the top of the square tube. At this time, the oil outlet 25 continues to flow out grease as the oiling portion 2 rises, and the grease adheres to the inner wall of the square tube to form an initial oil film; at the same time, the smearing member 23 below the oil outlet 25 squeezes the initial oil film into a smooth rough oil coating layer under the drive of the oiling portion 2; at this time, the rough oil coating layer has actually smeared the grease on the inner wall of the square tube 11, but in order to achieve a better coating effect, the rough oil coating layer must be smeared and shaped for the second time, that is, when the device is switched to the fine coating state, the oil outlet 25 arrives at the top of the square tube with the oiling portion 2 and stops flowing out grease, and the lifting power mechanism 6 can drive the oiling portion 2 to descend to the bottom of the square tube, and the oiling portion 2 drives the smearing member 23 to evenly smear the rough oil coating layer on the inner wall of the square tube.

[0048] Furthermore, the oiling portion 2 matches the inner contour of the square tube, and an oil outlet gap a is formed between the oil outlet 25 on the side wall of the oiling portion 2 and the inner wall of the square tube. The oil outlet gap a allows the oil outlet 25 close to the inner wall of the square tube 12 to have a certain oil outlet space to avoid blockage of grease flowing out of the oil outlet 25.

[0049] Further, if Figure 3As shown, the side wall of the oiling body 31 of the oiling portion 2 is recessed with a placement groove 28. In order to facilitate maintenance and replacement, a placement block 24 is detachably connected to the placement groove 28. The smearing member 23 is a smearing column arranged on the placement block 24 and the outer wall is tightly attached to the inner wall of the square tube. The placement block 24 is provided with an avoidance hole 27 for avoiding the grease flowing out of the oil outlet 25. In order to prevent the smearing column from forming a hard friction contact with the inner wall of the square tube 11, the smearing column is made of elastic material, and the smearing column can roll on the inner wall of the square tube in the vertical direction under the drive of the oiling portion 2.

[0050] Further, if Figure 3 , Figure 5 As shown, a rotating groove 26 for accommodating the smear column is provided below the oil outlet 25. The smear column penetrates the mounting block 24 along the length direction of the smear column to form the rotating groove 26. Both ends of the smear column contact the groove wall of the mounting groove 28, thereby preventing the smear column from moving along its own length direction; and in order to prevent the smear column from falling out along its own radial direction when rotating, the cross-sectional shape of the rotating groove 26 is an arc with a notch 241, and the notch 241 faces the inner wall of the square tube 1. After rolling into the rotating groove, it will be partially exposed at the notch 241 to form a contact portion with the inner wall of the square tube. However, since the distance between the two end points of the notch 241 does not exceed the diameter of the rotating groove 26, the rotating groove 26 will limit the smear column from falling out along its own radial direction, so that the smear column can rotate along its own axial direction in the rotating groove 26 after contacting the inner wall of the square tube.

[0051] Further, if Figure 6a-7b As shown, the oiling body 31 includes four side walls. In order to form a lubricating oil layer on the inner walls around the square tube 11, the oil outlets 25 and the corresponding smearing members 3 are symmetrically arranged on the corresponding side walls, so that the inner walls around the square tube 11 are oiled on all sides. In order to prevent interference between the smearing member 3 and the placement block 24, the two corresponding groups of oil outlets 25 and the smearing member 3 on the two adjacent side walls are not at the same height. Therefore, in order to supply oil to the oil outlets 25 at different heights, the oil inlet a must extend to the topmost oil outlet position; specifically, in order to allow the grease inside the oil inlet a to be transported to the oil outlets 25 at different heights, corresponding oil supply channels 212 are opened on the two adjacent side walls of the oiling body 31. In order to connect the oil supply channel 212 with the oil inlet a, the corresponding side walls need to be pierced to form a cross-shaped oil supply line. The pierced channel must be equipped with a plug 22 on the corresponding side wall to prevent oil leakage from the oiling body 31.

[0052] Example 2: Figure 4As shown, the difference between this embodiment and embodiment 1 is that the smear column is not made of elastic material, and a rotating shaft 231 is passed through the axis of the smear column, and the groove walls at both ends of the receiving groove 28 are provided with insertion holes 211, and the two ends of the rotating shaft 231 are respectively inserted into the insertion holes 211 in the groove wall of the receiving groove 28. In order to make the smear column and the inner wall of the square tube 11 achieve flexible contact, the groove wall of the receiving groove 28 is made of elastic material. When the exposed part of the smear column is squeezed and contacted with the inner wall of the square tube 11, the smear column can produce an elastic effect through the groove wall of the receiving groove 28 to achieve the same smearing effect as in embodiment 1.

[0053] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A pipe inner wall lubrication device, characterized in that: The invention comprises a base (1) for supporting the bottom end of a circular tube (12); a lubricating portion (3) matching the shape of the inner cavity of the circular tube is provided below the base (1); the lubricating portion (3) is connected to a linear power mechanism (6); the linear power mechanism (6) can drive the lubricating portion (3) to move up and down inside the circular tube; at least one oil outlet groove (32) for grease to flow out is provided on the side wall of the lubricating portion (3); and a lubricating ring (33) fitting against the inner wall of the circular tube (12) is provided at the top end of the lubricating portion (3); The device has a preparation state and an oiling state. When the device is in the preparation state, the oiling portion (3) can rise to the top of the circular tube (12) under the action of the linear power mechanism (6), at which time the oil outlet groove (32) starts to flow out grease, and the grease forms an adherent oil layer on the inner wall of the top of the circular tube (12); when the device is switched to the oiling state, the oil outlet groove (32) stops flowing out grease, and at this time the oiling portion (3) can move downward to the bottom of the circular tube (12) under the action of the linear power mechanism (6), and drive the oiling ring (33) to evenly spread the adherent oil layer on the inner wall of the circular tube (12).

2. The pipe inner wall lubrication device according to claim 1 is characterized in that: The oiling ring (33) protrudes outward from the surface of the oiling portion (3) and forms an interference fit with the inner wall of the circular tube (12).

3. A pipe inner wall lubrication device according to claim 2, characterized in that: The oiling ring (33) is a flexible rubber ring made of elastic material.

4. The pipe inner wall lubrication device according to claim 1 is characterized in that: A fixing plate (8) is provided above the highest point of the vertical movement path of the oiling portion (3), and the fixing plate (8) can press the circular tube (12) tightly, thereby forming a bidirectional limit for the circular tube (12) in the vertical direction together with the base (1).

5. The pipe inner wall lubrication device according to claim 4 is characterized in that: A vertical plate (13) is arranged on the side of the base (1), a horizontal plate (14) is fixedly connected to the top of the vertical plate (13), and a fixed plate (8) is connected to the horizontal plate (14).

6. A pipe inner wall lubrication device according to claim 5, characterized in that: A driving mechanism (10) is provided on the transverse plate (14), and the driving mechanism is connected to the fixed plate (8). The driving mechanism (10) can drive the fixed plate (8) to move up and down to compact the round tubes (12) of different lengths.

7. The pipe inner wall lubrication device according to claim 1, characterized in that: The bottom end of the oiling portion (3) is connected to a vacuum oil delivery pipe (4) for delivering oil to the oil outlet groove (32).

8. The pipe inner wall lubrication device according to claim 7, characterized in that: The vacuum oil delivery pipe (4) is a rigid pipe, and a fixed block (5) is connected to the vacuum oil delivery pipe (4). The linear power mechanism (6) is connected to the fixed block (5) to drive the vacuum oil delivery pipe (4) and the oiling part (3) to move synchronously in the vertical direction.

9. A pipe inner wall lubrication device according to claim 8, characterized in that: The linear power mechanism (6) comprises a vertical screw threadedly connected to the fixed block (5) and a motor, and the motor can drive the vertical screw to rotate, thereby driving the vacuum oil delivery pipe (4) and the oiling part (3) to move synchronously in the vertical direction.

Images