Square tube inner wall oiling device

Abstract

The utility model provides a square tube inner wall oiling device which comprises a base used for bearing the bottom end of a square tube, an oiling part extending into the square tube from the bottom end of the square tube is arranged below the base, and the oiling part is connected with a lifting power mechanism. The oiling part is driven by the lifting power to ascend and descend in the vertical direction on the inner wall of the square tube, so that grease can be evenly smeared on the inner wall of the square tube, precise lubrication of the inner wall of the square tube is achieved in the ascending and descending process of the oiling part, and the lubrication quality of the inner wall of the square tube is improved.

Description

Technical Field

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

[0002] In order to achieve the functions of rust prevention and lubrication of pipes, many pipes need to be lubricated with oil inside. The existing lubrication methods on the market are mostly to apply the grease directly after squeezing it out, but the required application position is on the inner wall of the long pipe, and it is impossible to achieve uniform application in actual operation; for example, in square pipes, the grease is often unevenly applied because the range of oiling is difficult to control; in addition, this application method will also cause grease to be applied to places that do not need to be oiled. After the grease dries, it will form oil stains, which will affect the performance of the square pipe.

[0003] Therefore, a square tube inner wall oiling device is needed, which can quickly and evenly apply grease to the inner wall of the square tube to avoid grease accumulation in the tube. At the same time, the structure is relatively simple and the oiling range can be controlled to improve the quality of lubrication inside the square tube. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a square tube inner wall oiling device, which drives the oiling part to rise and fall vertically on the inner wall of the square tube by the lifting power, so that the grease can be evenly applied to the inner wall of the square tube, thereby achieving precise lubrication of the inner wall of the square tube during the lifting process of the oiling part, thereby improving the lubrication quality of the inner wall of the square tube.

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

[0006] A square tube inner wall oiling device comprises a base for supporting the bottom end of the square tube, an oiling part extending from the bottom end of the square tube into the interior of the square tube is arranged below the base, the oiling part is connected to a lifting power mechanism, and the lifting power mechanism can drive the oiling part to move up and down in the square tube; at least one oil outlet for oil to flow out is arranged on the side wall of the oiling part, and a coating member close to the corresponding inner wall of the square tube is arranged below the oil outlet;

[0007] 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 drives the oil coating part to move upward along the bottom of the square tube to the top of the square tube. At this time, the oil outlet continues to flow out grease as the oil coating part 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 piece below the oil outlet squeezes the initial oil film into a flat rough oil coating layer under the drive of the oil coating part; when the device is switched to the fine coating state, the oil outlet reaches the top of the square tube with the oil coating part and stops flowing out grease. At this time, the lifting power mechanism can drive the oil coating part to descend to the bottom of the square tube, and the oil coating part drives the smearing piece to evenly smear the rough oil coating layer on the inner wall of the square tube.

[0008] Preferably, the oil coating portion matches the inner contour of the square tube, and an oil outlet gap is formed between the oil outlet position on the side wall of the oil coating portion and the inner wall of the square tube; the oil outlet gap can leave oil outlet space to avoid oil outlet blockage.

[0009] Preferably, the smearing member is a roller whose outer wall is tightly attached to the inner wall of the square tube. The roller can roll on the inner wall of the square tube along the vertical direction driven by the oiling part; thereby, the roller forms a squeezing and flattening effect on the grease on the inner wall of the square tube, so that the grease can be more evenly applied to the inner wall of the square tube.

[0010] Preferably, a placement groove is recessed on the side wall of the oiling portion, a placement block is detachably connected to the placement groove, and the roller is arranged on the placement block; this makes it easy to maintain the roller and the placement block in the later stage, thereby reducing the use and maintenance costs.

[0011] Preferably, a rotating groove for accommodating a roller is provided below the oil outlet, and the roller can rotate along its own axis in the rotating groove after contacting the inner wall of the square tube, so that the roller can flatten the grease better.

[0012] Preferably, the roller is made of elastic material; the roller made of elastic material can not only better fit the inner wall of the square tube, but also avoid hard friction between the roller and the inner wall of the square tube, thereby protecting the inner wall of the square tube.

[0013] Preferably, a rotating shaft is passed through the axis of the roller, and both ends of the rotating shaft are respectively inserted into the groove wall of the placement groove, and the groove wall of the placement groove is made of elastic material; the groove wall of the placement groove made of elastic material can not only make the roller fit the inner wall of the square tube better, but also avoid hard friction between the roller and the inner wall of the square tube, thereby protecting the inner wall of the square tube.

[0014] Preferably, the bottom end of the oil coating portion is connected to an oil delivery pipe for delivering oil to the oil outlet; the oil delivery pipe can stably deliver grease to the oil outlet, so that the oil outlet can stably discharge oil.

[0015] Preferably, the oil pipeline is a rigid pipe, and a connecting block is installed on the oil pipeline. The lifting power mechanism is connected to the connecting block to drive the oil pipeline and the oiling part to move synchronously in the vertical direction. The rigid oil pipeline is both an oil pipeline fitting of the oiling part and a connecting support member connected between the lifting power mechanism and the oiling part. This design is ingenious and kills two birds with one stone.

[0016] Preferably, the lifting power mechanism includes a lifting screw and a motor threadedly connected to the connecting block, and the motor can drive the lifting screw to rotate to drive the oil pipe and the oiling part to move synchronously in the vertical direction; so that the lifting position and lubrication range of the oiling part in the square tube can be accurately controlled.

[0017] The principle and beneficial effects of the utility model using the above technical solution are:

[0018] The utility model provides a square tube inner wall oiling device, which drives an oiling part to lift and lower in a vertical direction on the inner wall of the square tube by a lifting power, and first performs rough lubrication on the inner wall of the square tube during the rising process of the oiling part, and then performs fine lubrication on the lubricated inner wall of the square tube again during the descending process of the oiling part. The whole lubrication process is simple and practical, avoids the phenomenon of insufficient lubrication or uneven lubrication, and improves the lubrication quality in the square tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the device for oiling the inner wall of a square tube;

[0020] Figure 2 This is the lower internal structure diagram of the square tube inner wall oiling device;

[0021] Figure 3 It is an exploded view of the components on the oil coating part in Example 1;

[0022] Figure 4 It is an exploded view of the components on the oil coating part in Example 2;

[0023] Figure 5 It is a schematic diagram of the structure of the rotating groove on the placement block;

[0024] Figure 6a It is a front view of the oiling part;

[0025] Figure 6b is a cross-sectional view of the oil supply passage at the lower end of the oil coating portion;

[0026] Figure 7a It is a side view of the oil-coated portion;

[0027] Figure 7b is a cross-sectional view of the oil supply passage at the upper end of the oil coating portion;

[0028] Figure 8 It is a structural diagram of the oiling part;

[0029] Fig. 9 It is a cross-sectional view of the oil outlet groove in the oiling part;

[0030] 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;

[0031] The figures are marked as follows: 1-base, 2-oiling part, 3-oiling part, 4-oil delivery pipe, 5-connecting block, 6-lifting power mechanism, 7-chassis, 8-pressing 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

[0032] 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.

[0033] 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.

[0034] like Figure 1-10 As shown, the utility model has multiple embodiments, and the specific implementation methods are as follows:

[0035] Embodiment 1: The utility model provides a square tube inner wall oiling device, which is provided with a square tube lubrication module, and the square tube lubrication module includes a base 1 for supporting the bottom end of a circular tube 12, and an oiling portion 2 matching the inner cavity shape of the square tube 11 is provided below the base 1, and the oiling portion 2 includes an oiling body 31 matching the inner cavity contour of the square tube 11, and 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 close to the corresponding inner wall of the square tube is provided below the oil outlet 25.

[0036] 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.

[0037] 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.

[0038] Further, if Figure 3 As shown, a placement groove 28 is recessed on the side wall of the oiling body 31 of the oiling portion 2. To facilitate maintenance and replacement, a placement block 24 is detachably connected to the placement groove 28. The smearing member 23 is a roller arranged on the placement block 24 and the outer wall of which 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 roller from forming a hard friction contact with the inner wall of the square tube 11, the roller is made of an elastic material, and the roller can roll on the inner wall of the square tube in a vertical direction under the drive of the oiling portion 2.

[0039] Further, if Figure 3 , Figure 5 As shown, a rotation groove 26 for accommodating the roller is provided below the oil outlet 25. The roller forms the rotation groove 26 after the placement block 24 is penetrated along the length direction of the roller. Both ends of the roller contact the groove wall of the placement groove 28, thereby preventing the roller from moving along its own length direction. In order to prevent the roller from slipping out along its own radial direction when rotating, the cross-sectional shape of the rotation 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 rotation 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 rotation groove 26, the rotation groove 26 will limit the roller from slipping out along its own radial direction, so that the roller can rotate along its own axial direction in the rotation groove 26 after contacting the inner wall of the square tube.

[0040] Further, if Figure 6a-7bAs 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.

[0041] Furthermore, the oiling part 2 is connected to a lifting power mechanism 6. To ensure that the lifting power mechanism 6 can work normally, the lifting power mechanism 6 is arranged inside a chassis 7 below the base 1. The lifting power mechanism 6 can drive the oiling part 2 to move up and down inside the circular tube 11.

[0042] Further, if Figure 1-2 As shown, in order to keep the square tube 11 stable during lubrication, a pressure plate 8 is provided above the highest point of the up and down moving path of the oiling portion 2, that is, the top of the square tube 11. The pressure plate 8 can press the square tube 11, thereby forming a two-way limit on the square tube 11 in the vertical direction with the base 1; to ensure that the square tube 11 will not fall over or deflect when the smearing member 23 is applying grease.

[0043] Furthermore, the pressing plate 8 is arranged at the top of the square tube 11 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 pressing plate 8 is connected to the horizontal plate 14; and in order to enable the equipment to lubricate steel tubes of different lengths and adjust the clamping force of the pressing plate 8 on the top of the square tube 11, 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 pressing plate 8 and can drive the pressing plate 8 to move up and down to clamp square tubes 11 of different lengths; the driving mechanism 10 can control the pressing plate 8 to adjust the clamping force of the tube, and can also enable the oiling part 3 to lubricate steel tubes of different lengths, which can not only keep the round tube 12 stable, but also enhance the versatility of the steel tube lubrication equipment.

[0044] Furthermore, in order to ensure that the pressure plate 8 can move up and down stably, a guide rod 9 is connected to the upper end of the pressure 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 pressure plate 8 to move longitudinally, the guide rod 9 can play a guiding role similar to a guide rail, so that the pressure plate 8 can move longitudinally more smoothly and stably.

[0045] Further, if Figure 2 , Fig. 9 As shown, in order to ensure that the oil outlet 25 on the oiling part 2 can stably flow out the grease, the bottom end of the oiling part 2 is provided with an oil inlet a, which is connected to the oil outlet 25, and the oil inlet a is connected to an oil delivery pipe 4 for delivering oil to the oil outlet 25; the bottom end of the oil delivery pipe 4 is connected to a servo oil supply device (not shown), which is a grease delivery and supply device. The servo oil supply device can stably deliver the prepared appropriate amount of grease to the oil outlet groove 33 through the oil delivery pipe 4.

[0046] Furthermore, if the oil pipe 4 is a soft rubber tube, it can also supply oil to the oil outlet 25. However, considering that the oiling part 3 moves up and down in the circular tube 12, the oil pipe 4 also needs to enter the circular tube 12. Therefore, in order to avoid interference or collision between the soft oil pipe 4 and the square tube 11, the oil pipe 4 is configured as a rigid hard tube, and a connecting block 5 is connected to the oil pipe 4, and the lifting power mechanism 6 is connected to the connecting block 5 to drive the oil pipe 4 and the oiling part 2 to move synchronously in the vertical direction; the rigid oil pipe 4 is both an oil pipe fitting of the oiling part 2 and a connecting support member connected between the lifting power mechanism 10 and the oiling part 2. This design not only ensures that the oil outlet 25 can achieve stable oil discharge through the oil pipe 4, but also avoids interference and collision problems of the oil pipe 4 in the square tube 11.

[0047] Furthermore, the lifting power mechanism 6 includes a vertical screw and a motor threadedly connected to the connecting 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 oil pipe 4 and the oiling part 2 to move synchronously in the vertical direction; this design enables the oiling part 3 to move longitudinally in the square tube 11, so that the longitudinal lubrication length and range of the inner wall of the square tube 11 can be controlled.

[0048] Furthermore, the lubricating device also includes a round tube lubrication module arranged on the side of the oiling portion 3, the lubricating module includes an oiling portion 3 entering the inner cavity of the round tube 12, and an oil inlet s is also arranged below the oiling portion 3, and the oil inlet s is also independently connected to the corresponding oil pipeline 4, the servo oil supply device and the lifting power mechanism 6. In short, the round tube lubrication module is different from the square tube lubrication module in the structure of the oiling portion 3, and at least one oil outlet groove 32 for grease to flow out is arranged on the side wall of the oiling portion 3, and an oiling ring 33 that fits with the inner wall of the round tube 12 is arranged 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 round 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 round tube 12 to have a certain oil outlet space to avoid blockage of grease flowing out of the oil outlet groove 33.

[0049] 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 lifting 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 lifting 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.

[0050] Further, if Figure 8 As shown, the oiling portion 3 includes a cylindrical oiling body 31, and an oil outlet groove 33 is arranged in the surrounding direction 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.

[0051] 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.

[0052] 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.

[0053] Example 2: Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the roller is not made of elastic material, and a rotating shaft 231 is passed through the axis of the roller, 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 roller 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 roller is squeezed and contacted with the inner wall of the square tube 11, the roller can produce an elastic effect through the groove wall of the receiving groove 28 to achieve the same smearing effect as in embodiment 1.

[0054] 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 square tube inner wall oiling device, characterized by: The invention comprises a base (1) for supporting the bottom end of a square tube (11); an oiling portion (2) extending from the bottom end of the square tube (11) into the interior of the square tube (11) is provided below the base (1); the oiling portion (2) is connected to a lifting power mechanism (6); the lifting power mechanism (6) can drive the oiling portion (2) to move up and down in the square tube (11); at least one oil outlet (25) for oil to flow out is provided on a side wall of the oiling portion (2); and a smearing member (23) is provided below the oil outlet (25) and is in close contact with the corresponding inner wall of the square tube (11); 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 oil coating part (2) to move upward along the bottom of the square tube (11) to the top of the square tube (11). At this time, the oil outlet (25) continues to flow out grease as the oil coating part (2) rises, and the grease adheres to the inner wall of the square tube (11) 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 oil coating part (2). When the device is switched to the fine coating state, the oil outlet (25) arrives at the top of the square tube (11) with the oil coating part (2) and stops flowing out grease. At this time, the lifting power mechanism (6) can drive the oil coating part (2) to descend to the bottom of the square tube (11), and the oil coating part (2) drives the smearing member (23) to evenly smear the rough oil coating layer on the inner wall of the square tube (11).

2. A square tube inner wall oiling device according to claim 1, characterized in that: The oil coating portion (2) matches the inner contour of the square tube (11), and an oil outlet gap (a) is formed between the position of the oil outlet (25) on the side wall of the oil coating portion (2) and the inner wall of the square tube (11).

3. The square tube inner wall oiling device according to claim 1 is characterized in that: The smearing member (23) is a roller whose outer wall is tightly attached to the inner wall of the square tube (11); the roller can roll on the inner wall of the square tube (11) along a vertical direction under the drive of the oiling portion (2).

4. A square tube inner wall oiling device according to claim 3, characterized in that: The side wall of the oil coating portion (2) is concavely provided with a placement groove (28), a placement block (24) is detachably connected in the placement groove (28), and the roller is arranged on the placement block (24).

5. The square tube inner wall oiling device according to claim 4 is characterized in that: A rotation groove (26) for accommodating a roller is provided below the oil outlet (25). The roller can rotate along its own axis in the rotation groove (26) after contacting the inner wall of the square tube (11).

6. A square tube inner wall oiling device according to claim 5, characterized in that: The roller is made of elastic material.

7. The square tube inner wall oiling device according to claim 4 is characterized in that: A rotating shaft (231) is passed through the axis of the roller, and two ends of the rotating shaft (231) are respectively passed through the groove wall of the placement groove (28), and the groove wall of the placement groove (28) is made of elastic material.

8. The square tube inner wall oiling device according to claim 1 is characterized by: The bottom end of the oil coating portion (2) is connected to an oil delivery pipe (4) for delivering oil to the oil outlet (25).

9. The square tube inner wall oiling device according to claim 8, characterized in that: The oil delivery pipe (4) is a rigid pipe, and a connecting block (5) is installed on the oil delivery pipe (4). The lifting power mechanism (6) is connected to the connecting block (5) to drive the oil delivery pipe (4) and the oil coating part (2) to move synchronously in the vertical direction.

10. The square tube inner wall oiling device according to claim 9, characterized in that: The lifting power mechanism (6) comprises a lifting screw and a motor which are threadedly connected to the connecting block (5); the motor can drive the lifting screw to rotate, thereby driving the oil delivery pipe (4) and the oil coating part (2) to move synchronously in the vertical direction.

Images