A steel pipe surface polishing device

Abstract

The application discloses a steel pipe surface polishing device, which belongs to the technical field of handheld polishers. The steel pipe surface polishing device comprises a polisher, a fixing frame, a polishing mechanism and a longitudinal handle which are sequentially arranged on the polisher. The polisher is provided with a power output end which penetrates through the fixing frame. The polishing mechanism comprises two rotating wheels which are distributed left and right. The rotating wheel close to the fixing frame is connected with the power output end. The two rotating wheels are connected with polishing belts. The fixing frame is fixedly provided with a fixing frame. The fixing frame is slidably provided with a sliding frame. The other rotating wheel is mounted on the sliding frame. The lower end of the sliding frame is provided with a working cavity. The working cavity is provided with a fixed position fixing rotating drum and a sliding sliding rotating drum. The fixing rotating drum and the sliding rotating drum can rotate in the working cavity. The steel pipe surface polishing device has the beneficial effects that the circumferential wrapping angle of the sand belt to the steel pipe can be increased, the number of circumferential rotation is reduced, the polishing efficiency and effect are improved, the operation is simple, and the steel pipe surface polishing device is convenient to use.

Description

Technical Field

[0001] This application relates to the field of handheld polishing machine technology, and more specifically, to a steel pipe surface polishing device. Background Technology

[0002] Polishing is a processing method that reduces the surface roughness of an object by repeatedly moving a polishing component across it. For steel pipes, polishing is usually used to remove rust. However, in existing handheld polishing devices, the abrasive belt is tightly bound to two pulleys, resulting in a small contact area between the belt and the pipe during polishing. This requires manual adjustment of the polishing position and angle multiple times, which affects polishing efficiency. Furthermore, for fixed steel pipes, the support structure, which consists of horizontal, vertical, and diagonal components, makes angle adjustment of the handheld polishing device inconvenient, and prolonged holding increases worker fatigue.

[0003] Therefore, a steel pipe surface polishing device is needed to solve the above problems. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a steel pipe surface polishing device, comprising: a polishing machine, a fixed frame mounted on the polishing machine, the fixed frame being fixedly connected to the outer shell of the polishing machine via threaded parts, a power shaft passing through the fixed frame on the polishing machine, a polishing mechanism connected to the power shaft, the polishing mechanism being stably connected to the fixed frame, a vertical handle fixedly mounted on the upper end of the fixed frame, and a detachable horizontal handle connected to the side end of the polishing mechanism, the polishing mechanism including two rotating wheels arranged left and right, a polishing belt connected between the two rotating wheels, and the polishing belt... For polishing the surface of steel pipes, the polishing mechanism further includes a fixed frame that is fixedly connected to the fixed frame by a threaded component. The fixed frame is provided with a sliding frame that can slide and extend left and right. The rotating wheel located at the left end is rotatably connected to the sliding frame. The rotating wheel at the right end is rotatably engaged with the fixed frame and connected to the power shaft of the polishing machine by a key and a keyway. Bearings are installed at the rotatable engagement points of the two rotating wheels. The fixed frame and the sliding frame have mounting grooves on their sides. The mounting groove on the fixed frame is strip-shaped, and the mounting groove on the sliding frame is hole-shaped. The lower end of the sliding frame is provided with a working cavity.

[0006] Furthermore, the working cavity is provided with a fixed rotating cylinder and a sliding rotating cylinder. Both the fixed rotating cylinder and the sliding rotating cylinder can fit into the polishing belt. The fixed rotating cylinder is rotatably mounted on the sliding frame, and the sliding rotating cylinder is rotatably mounted on the fixed frame. The upper end of the sliding frame is fixed with a reinforcing rib, and the left and right extension surfaces of the reinforcing rib are T-shaped and inserted into the fixed frame for sliding engagement.

[0007] Furthermore, the upper end of the polishing machine is equipped with an electric switch that can swing back and forth. An electromagnet is electrically connected to the electric switch via wires. Connecting frames are rotatably mounted on both the fixed rotating drum and the sliding rotating drum. The connecting frame on the right end slides into and out of the fixed frame, and a return spring is installed between the connecting frame and the sliding frame. A limiting end is provided at the connection end between the connecting frame and the return spring. The electromagnet is fixedly installed in the fixed frame and is symmetrically located at the limiting ends of the two connecting frames. The electromagnet can magnetically adhere to the limiting ends on the connecting frame. A push spring is installed between the fixed frame and the sliding frame.

[0008] Furthermore, a sliding groove is provided at the left end of the fixed frame, and a retaining strip is fixedly provided at the side end of the sliding frame. The retaining strip is inserted into the sliding groove and slides against the side wall of the sliding groove. A retaining groove is provided in the retaining strip. A buckle is hinged on the fixed frame, and a torsion spring is installed at the hinged part of the fixed frame and the buckle. The torsion force of the torsion spring is as follows: Figure 8 The orientation is counterclockwise. The slot includes a first slot on the left and a second slot on the right. Both the first and second slots are inclined. The buckle can be inserted into the slot. When the buckle abuts against the slot, the second slot fits against the buckle. There is a certain gap between the first slot and the buckle.

[0009] The beneficial effects of this application are as follows:

[0010] 1. During use, the steel pipe drives the polishing belt to push the sliding drum into the working chamber. By controlling the left and right movement of the sliding drum, the fixed drum, in conjunction with the sliding drum, comes into contact with the polishing belt. Compared with the existing technology where the polishing belt is polished in a nearly taut state, the polishing belt in this solution has a larger coverage angle with the steel pipe in the circumferential direction. This reduces the need for the operator to hold the polishing machine and move it around the circumference of the steel pipe multiple times, thereby increasing the polishing efficiency of the operator.

[0011] 2. Under the push of the connecting frame, the sliding drum is reset by the magnetic attraction of the electromagnet, so that the polishing belt can be attached to the circumference of the steel pipe. With the help of two rotating wheels to maintain the tension of the rotating wheels, the steel pipe is polished in the circumferential direction. The polishing belt has a consistent polishing force on the steel pipe to ensure the polishing effect.

[0012] 3. As the worker holds the device close to the steel pipe, the sliding frame can automatically and quickly retract and be positioned after retraction through the clips and buckles. While maintaining the positioning effect of the sliding frame, there is no need for the worker to tighten the fixed frame and the sliding frame, thereby further improving work efficiency. The installation of vertical and horizontal handles increases the worker's grip angle, thereby improving work comfort for polishing and grinding the steel pipe. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0014] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the appearance of a steel pipe surface polishing device according to the first state of an embodiment of the present application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the appearance on the other side in the embodiment;

[0018] Figure 3 This is a schematic diagram of the appearance of a steel pipe surface polishing device according to a second embodiment of the present application;

[0019] Figure 4 yes Figure 3 A partial view of the appearance after removing the fixing frame and sliding bracket in the embodiment;

[0020] Figure 5 yes Figure 3 A schematic diagram of the front view structure in the embodiment;

[0021] Figure 6 This is a schematic diagram of the appearance of a steel pipe surface polishing device in the third state according to an embodiment of this application;

[0022] Figure 7 yes Figure 6 A magnified view of a portion of point A in the embodiment;

[0023] Figure 8 yes Figure 7 A top view of the card strip structure in the embodiment.

[0024] Figure label:

[0025] 10. Polishing machine; 11. Fixing frame; 12. Polishing mechanism; 13. Vertical handle; 14. Horizontal handle; 20. Polishing belt; 21. Fixing frame; 22. Sliding frame; 23. Rotating wheel; 24. Mounting slot; 25. Fixed rotating drum; 26. Sliding rotating drum; 27. Connecting frame; 28. Return spring; 29. ​​Push spring; 30. Electric switch; 31. Electromagnet; 40. Working chamber; 41. Reinforcing rib; 42. Sliding groove; 43. Locking strip; 44. Locking slot; 45. Buckle; 46. First groove; 47. Second groove. Detailed Implementation

[0026] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0027] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0028] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0029] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0030] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Reference Figure 1-2A steel pipe surface polishing device includes: a polishing machine 10, a fixed frame 11 mounted on the polishing machine 10, the fixed frame 11 being fixedly connected to the outer shell of the polishing machine 10 by a threaded component, a power shaft on the polishing machine 10 passing through the fixed frame 11, a polishing mechanism 12 connected to the power shaft, the polishing mechanism 12 being partially connected to the fixed frame 11 for stable connection, a vertical handle 13 fixedly mounted on the upper end of the fixed frame 11, a detachable horizontal handle 14 connected to the side end of the polishing mechanism 12, the polishing mechanism 12 including two rotating wheels 23 arranged left and right, a polishing belt 20 connected between the two rotating wheels 23 for polishing the surface of the steel pipe, the polishing mechanism 12 also including a fixed frame 21 fixedly connected to the fixed frame 11 by a threaded component, a sliding frame 22 that can slide left and right within the fixed frame 21, the rotating wheel 23 at the left end being rotatably connected to the sliding frame 22, and the rotating wheel 23 at the right end being rotatably engaged with the fixed frame 11 and connected to the power shaft at the polishing machine 10 by a key. Connected to the keyway, bearings are installed at the rotational mating points of the two rotating wheels 23. Mounting grooves 24 are provided on the sides of the fixed frame 21 and the sliding frame 22. The mounting grooves 24 on the fixed frame 21 are strip-shaped, while those on the sliding frame 22 are hole-shaped. A working cavity 40 is provided at the lower end of the sliding frame 22. A fixed rotating cylinder 25 and a sliding rotating cylinder 26 are housed within the working cavity 40. Both the fixed rotating cylinder 25 and the sliding rotating cylinder 26 can fit against the polishing belt 20. The fixed rotating cylinder 25 is rotatably mounted on the sliding frame 22. On the movable frame 22, the sliding drum 26 rotates and is slidably mounted on the fixed frame 21. The upper end of the sliding frame 22 is fixedly provided with a reinforcing rib 41. The left and right extension surfaces of the reinforcing rib 41 are T-shaped and inserted into the fixed frame 21 for sliding engagement. The sliding frame 22 is fixedly positioned in the fixed frame 21 by installing threaded parts at the mounting groove 24. Mounting brackets are rotatably connected to both the fixed drum 25 and the sliding drum 26. The two mounting brackets are fixedly connected to the sliding frame 22 and slidably connected to the fixed frame 21, respectively.

[0032] Reference Figure 3-5 The polishing machine 10 has an electric switch 30 that can swing back and forth at its upper end. An electromagnet 31 is electrically connected to the electric switch 30 via wires. Connecting brackets 27 are rotatably mounted on both the fixed rotating drum 25 and the sliding rotating drum 26. The right-hand connecting bracket 27 slides into and out of the fixed frame 21, and a return spring 28 is installed between the connecting bracket 27 and the sliding frame 22. A limiting end is provided at the connection end between the connecting bracket 27 and the return spring 28. The electromagnet 31 is fixedly installed inside the fixed frame 21 and symmetrically positioned at the limiting ends of the two connecting brackets 27. The electromagnet 31 can magnetically engage with the limiting ends on the connecting brackets 27. A push spring 29 is connected between the fixed frame 21 and the sliding frame 22, providing a restoring force for the left and right movement of the sliding frame 22. (Refer to the above...) Figure 1-2When the steel pipe is placed in the working cavity 40 and fits against the polishing belt 20, the positioning of the sliding drum 26 is achieved by installing a threaded part at the mounting groove 24, so that the polishing belt 20 covers most of the area of ​​the steel pipe.

[0033] Reference Figure 6-8 A sliding groove 42 is provided at the left end of the fixed frame 21, and a retaining strip 43 is fixedly provided at the side end of the sliding frame 22. The retaining strip 43 is inserted into the sliding groove 42 and slides against the side wall of the sliding groove 42. A retaining groove 44 is provided in the retaining strip 43. A buckle 45 is hinged on the fixed frame 21. A torsion spring is installed at the hinged part between the fixed frame 21 and the buckle 45. The torsion force of the torsion spring is as follows: Figure 8 The orientation is counterclockwise. The slot 44 includes a first slot 46 on the left and a second slot 47 on the right. Both the first slot 46 and the second slot 47 are inclined. The buckle 45 can be inserted into the slot 44. When the buckle 45 and the slot 44 abut, the second slot 47 and the buckle 45 fit together. There is a certain gap between the first slot 46 and the buckle 45. The buckle 45 replaces the threaded installation at the mounting slot 24 by using the clip 43 and the buckle 45, so as to more quickly install and separate the sight fixing frame 21 and the sliding frame 22.

[0034] Working process or usage method:

[0035] 1. In the initial state, the polishing mechanism 12 is set as follows: Figure 2 As shown, the polishing belt 20 abuts against the two rotating wheels 23. The fixed rotating drum 25 and the sliding rotating drum 26 are not abutted. No threaded parts are installed at the mounting groove 24. The operator holds the outer shell and the horizontal handle 14 of the polishing machine 10 and moves the working chamber 40 toward the steel pipe part so that the steel pipe abuts against the polishing belt 20 below the working chamber 40. The steel pipe is then pushed into the working chamber 40.

[0036] like Figure 3 and Figure 4 As shown, during the insertion process, as the polishing belt 20 abuts against the steel pipe and enters the working chamber 40, the length of the polishing belt 20 outside the working chamber 40 decreases. Therefore, under the force applied by the polishing belt 20, the unfixed sliding frame 22 overcomes the spring force of the push spring 29 and moves to the right, causing the sliding frame 22 to retract into the fixed frame 21. Simultaneously, during the insertion process, the outer circumference of the steel pipe abuts against the fixed rotating cylinder 25 and the sliding rotating cylinder 26. The distance between the fixed rotating cylinder 25 and the sliding rotating cylinder 26 is less than the diameter of the steel pipe. Therefore, under the contact between the steel pipe and the sliding rotating cylinder 26, a rightward pushing force is applied to the sliding rotating cylinder 26, causing the connecting frame 27, which is slidably installed within the sliding frame 22, to slide to the right against the spring force of the reset spring 28. Then, when the steel pipe is fully inserted into the working chamber 40 (as shown in the image), the sliding frame 27 moves to the right, overcoming the spring force of the reset spring 28. Figure 5 As shown, the steel pipe section is located above the fixed rotating drum 25 and the sliding rotating drum 26.

[0037] The sliding drum 26 will return to its original position by moving to the left under the spring force of the return spring 28, reducing the distance between the fixed drum 25 and the sliding drum 26. Then, by pressing the electric switch 30, the electromagnet 31 is energized. The electromagnet 31 becomes magnetic, causing the connecting frame 27 to continue moving to the left until the limiting end on the connecting frame 27 is in contact with the end face of the electromagnet 31 (e.g., ...). Figure 5 (As shown) Stop, further reduce the polishing strip 20 located at the outer end of the working cavity 40, thereby increasing the coverage of the polishing strip 20 at the steel pipe, improving polishing efficiency, and finally fix it through the mounting groove 24.

[0038] 2. To expedite the installation at the mounting slot 24, a retaining strip 43 and a buckle 45 are provided. During use, the operator holds the outer casing of the polishing machine 10 and the vertical handle 13, thereby bringing the polishing mechanism 12 closer to the steel pipe. During this contact process, the polishing belt 20 contracts, causing the sliding frame 22 to move to the right. As the sliding frame 22 moves to the right, the first slot 46 engages with the buckle 45, thus, under the action of the inclined surface, the buckle 45 is tilted and pushed upwards and to the right. Figure 8 As shown, the buckle 45 rotates clockwise to overcome the counterclockwise torque at the torsion spring until the buckle 45 moves to the next first groove 46, at which point the buckle 45 rotates counterclockwise to reset under the force of the torsion spring.

[0039] When the buckle 45 abuts against the second groove 47, the fixing frame 21 receives spring force from the return spring 28 and push spring 29 and electromagnetic attraction from the electromagnet 31, causing the locking strip 43 fixed to the fixing frame 21 to tend to move to the left. At this time, the buckle 45 will be tightly against the second groove 47. Figure 8 As shown, at this time, the thrust of the second groove 47 at the buckle 45 is tilted downwards to the left, as... Figure 8 The buckle 45 is moved counterclockwise and locked, thereby achieving the effect of quickly adjusting the fixed frame 21 to the right and maintaining stability.

[0040] After the work is completed, the staff holds the horizontal handle 14 and presses the power switch 30 again to disconnect the electromagnet 31 from the circuit and cut off the power. This allows the staff to push the buckle 45 away from the second groove 47 by overcoming the elastic force of the push spring 29 and the reset spring 28, so that the fixed frame 21 is reset under the action of the spring force, and the steel pipe is taken out from under the cover of the polishing belt 20.

[0041] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A steel pipe surface polishing device, characterized in that, include: Polishing machine (10), wherein a fixing frame (11), a polishing mechanism (12) and a vertical handle (13) are installed in sequence at the polishing machine (10); The polishing machine (10) is provided with a power output end that passes through the fixed frame (11). The polishing mechanism (12) includes two rotating wheels (23) distributed on the left and right. The rotating wheel (23) near the fixed frame (11) is connected to the power output end. Polishing belts (20) are connected to the two rotating wheels (23). A fixed frame (21) is fixed on the fixed frame (11). A sliding frame (22) is slidably provided at the fixed frame (21). The other rotating wheel (23) is installed on the sliding frame (22). The lower end of the sliding frame (22) is provided with a working cavity (40), and a fixed rotating cylinder (25) with a fixed position and a sliding rotating cylinder (26) are provided in the working cavity (40). Both the fixed rotating cylinder (25) and the sliding rotating cylinder (26) can rotate in the working cavity (40).

2. The steel pipe surface polishing device according to claim 1, characterized in that: A push spring (29) is installed on the sliding part of the fixed frame (21) and the sliding frame (22). A connecting frame (27) is rotatably installed on both the fixed rotating cylinder (25) and the sliding rotating cylinder (26). The connecting frame (27) on the fixed rotating cylinder (25) is fixedly connected to the sliding frame (22). The connecting frame (27) on the sliding rotating cylinder (26) is inserted into the fixed frame (21) and slides against the side wall of the fixed frame (21). A return spring (28) is connected between the connecting frame (27) and the fixed frame (21).

3. The steel pipe surface polishing device according to claim 1, characterized in that: A sliding groove (42) is provided on the side end of the fixed frame (21) and on the left end of the fixed frame (21). A retaining strip (43) is fixed on the side end of the sliding frame (22). The retaining strip (43) is slidably disposed in the sliding groove (42). A retaining groove (44) is provided on the retaining strip (43). The retaining groove (44) includes two inclined first grooves (46) and second grooves (47). A buckle (45) is rotatably connected to the side end of the fixed frame (21). A torsion spring is provided between the fixed frame (21) and the buckle (45). The buckle (45) can be inserted into the retaining groove (44) and abut against the retaining strip (43).

4. The steel pipe surface polishing device according to claim 2, characterized in that: The polishing machine (10) is equipped with an electric switch (30) that can swing left and right at the upper end. An electromagnet (31) is fixed inside the fixed frame (21). The electric switch (30) and the electromagnet (31) are electrically connected by wires. The connecting frame (27) is magnetic and can be attracted by the electromagnet (31) when energized.

5. The steel pipe surface polishing device according to claim 1, characterized in that: A detachable horizontal handle (14) is installed on the side end face of the fixed frame (21), and the vertical handle (13) is set at a 90-degree angle to the horizontal handle (14).

6. The steel pipe surface polishing device according to claim 1, characterized in that: The upper end of the sliding frame (22) is fixed with two symmetrically arranged reinforcing ribs (41). The left and right extension ends of the reinforcing ribs (41) are arranged in a T shape and inserted into the fixed frame (21) and slide in cooperation with the fixed frame (21).

Images