Telescopic concrete surface finishing mud tool

Abstract

The utility model discloses a telescopic concrete surface finishing mud tool, and relates to the field of constructional engineering, the telescopic concrete surface finishing mud tool comprises a surface finishing plate, a connecting cylinder is mounted in the middle of the surface finishing plate, a rotating column is movably mounted on the connecting cylinder, a first rod piece is adjustably arranged on the rotating column, and a second rod piece is inserted into the first rod piece; a mounting hole is formed in the second rod piece, a spring is mounted in the mounting hole, a plug pin is arranged at one end of the spring, and a plug pin hole is formed in the first rod piece. By pressing the plug pin, the spring on the rear side of the plug pin is shrunk, the plug pin moves out of the plug pin hole and enters the mounting hole, at the moment, the second rod piece is pulled, and after the second rod piece moves to a proper position, the plug pin can be pushed out and enters the corresponding plug pin hole through the force of the spring, so that the second rod piece is fixed; therefore, the length of the rod piece can be adjusted.

Description

Technical Field

[0001] This application relates to the field of building engineering, and in particular to a retractable concrete finishing method. Background Technology

[0002] In concrete pouring projects, after the concrete has been vibrated, the surface must be treated according to the project requirements. This process is called concrete finishing, which is closely related to the initial setting time of the concrete. The quality of finishing depends on the timing. Generally, finishing is done twice. The first finishing is done after vibration, and the second finishing is done a few minutes before the initial setting. This way, the concrete surface is smoother and less prone to cracking.

[0003] Currently, the main method for finishing roofs with a large slope is to use ordinary flat slabs to assist manual finishing. Ordinary flat slabs are relatively inconvenient to operate. The main problem with this type of tool is that the handle size is fixed and the operating range is small. It requires a person to stand on the concrete surface to finish the surface, which results in multiple finishing operations, low efficiency and increased labor costs. Utility Model Content

[0004] To address the issue of limited operating range of fixed-size tools requiring workers to stand on concrete surfaces for finishing, resulting in multiple finishing operations, this application provides a retractable concrete finishing tool.

[0005] This application provides a retractable concrete finishing method using the following technical solution:

[0006] The device includes a receiving panel, a connecting cylinder installed in the middle of the receiving panel, a rotating column movably mounted on the connecting cylinder, a first rod adjustablely mounted on the rotating column, a second rod inserted into the first rod, a mounting hole on the second rod, a spring installed inside the mounting hole, a pin at one end of the spring, and a pin hole on the first rod.

[0007] By adopting the above technical solution, pressing the pin causes the spring on the back of the pin to contract, and the pin moves out of the pin hole and into the mounting hole. At this time, pulling the second rod will push the pin out into the corresponding pin hole when it moves to the appropriate position.

[0008] Preferably, there are multiple pin holes, which are evenly distributed on the first rod. The diameter of the pin hole is matched with the diameter of the pin, and the pin is located inside one of the pin holes.

[0009] By adopting the above technical solution, the spring force can push the pin out and into the corresponding pin hole to fix the second rod.

[0010] Preferably, the connecting cylinder has an internal thread, and the lower part of the rotating column has an external thread that matches the internal thread. The rotating column is rotatably connected to the internal thread of the connecting cylinder through the external thread.

[0011] By adopting the above technical solution, rotating the rotating column changes the orientation of the first and second rods after rotating about a quarter turn, thus facilitating storage.

[0012] Preferably, a connector is installed on the rotating column, and an adjustment hole is provided on the connector. A connecting shaft is installed at the lower end of the first rod. The diameters of both ends of the connecting shaft are adapted to the inner diameter of the adjustment hole, and the two ends of the connecting shaft are located inside the adjustment hole.

[0013] By adopting the above technical solution, when the contraction opening becomes larger, the connecting shaft can rotate inside the adjustment hole to adjust the angle between the first rod and the second rod.

[0014] Preferably, the connector has a contraction opening, and the contraction opening is internally connected to the adjustment hole.

[0015] By adopting the above technical solution, the upper part of the connector is gradually separated from one end of the fastening bolt. At this time, the contraction opening becomes larger, and the connecting shaft can rotate inside the mounting hole.

[0016] Preferably, a fastening bolt is installed on the upper side of the connector, and one end of the fastening bolt passes through the contraction opening and connects to the other side of the connector.

[0017] By adopting the above technical solution and tightening the fastening bolts, the connecting shaft can be clamped by the upper part of the connector, thus achieving a fixing effect.

[0018] Preferably, the upper end of the second rod is equipped with a handle, and the handle is provided with anti-slip texture in a circular pattern.

[0019] By adopting the above technical solution and setting anti-slip textures on the handle, the friction of the grip can be effectively improved, preventing the handle from slipping out of the hand and causing damage to the concrete surface.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application uses pressing the pin to retract the spring on the back of the pin, causing the pin to move out of the pin hole and into the mounting hole. At this time, the second rod is pulled. When it moves to the appropriate position, the force of the spring can push the pin out and into the corresponding pin hole to fix the second rod, thereby allowing the length of the rod to be adjusted.

[0022] 2. This application involves rotating the fastening bolt, gradually separating one end of the fastening bolt from the upper part of the connector. At this time, the contraction opening becomes larger, and the connecting shaft can rotate inside the mounting hole to adjust the angle between the first rod and the second rod. After adjusting to a suitable angle, the fastening bolt is tightened, and the connecting shaft is clamped by the upper part of the connector, thereby adjusting the angle of the rod. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a retractable concrete finishing mortar system according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram illustrating the overall front structure of the embodiments of this application;

[0025] Figure 3 This is a schematic diagram illustrating the disassembled structure of the connecting cylinder and rotating column, which are the main components of this application embodiment.

[0026] Figure 4 This is a schematic diagram illustrating the enlarged structure of part A, which is the main embodiment of this application.

[0027] Figure 5 This is a schematic diagram illustrating the enlarged structure of part B, which is the main embodiment of this application.

[0028] Reference numerals: 1. Retractable panel; 2. Connecting cylinder; 3. Rotating column; 4. Internal thread; 5. External thread; 6. Connecting piece; 7. Adjusting hole; 8. Shrinking opening; 9. Connecting shaft; 10. Fastening bolt; 11. First rod; 12. Pin hole; 13. Second rod; 14. Mounting hole; 15. Spring; 16. Pin; 17. Handle. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0030] This application discloses a retractable concrete finishing tool, including a finishing panel 1, a connecting cylinder 2 installed in the middle of the finishing panel 1, a rotating column 3 movably installed on the connecting cylinder 2, a first rod 11 adjustablely provided on the rotating column 3, a second rod 13 inserted into the inside of the first rod 11, the first rod 11 can extend from the inside of the second rod 13 to facilitate length adjustment, and can be easily extended and retracted when shortened.

[0031] Please refer to Figure 1 , Figure 2 and Figure 5The second rod 13 has a mounting hole 14, and a spring 15 is installed inside the mounting hole 14. One end of the spring 15 has a pin 16. Pressing the pin 16 causes the spring 15 behind the pin 16 to retract, and the pin 16 moves out from the pin hole 12 and into the mounting hole 14. The first rod 11 has multiple pin holes 12, which are evenly distributed on the first rod 11. The diameter of the pin hole 12 matches the diameter of the pin 16. The pin 16 is located inside one of the pin holes 12. When the second rod 13 is pulled and moved to the appropriate position, the force of the spring 15 can push the pin 16 out and into the corresponding pin hole 12 to fix the second rod 13.

[0032] Please refer to Figure 3 The connecting cylinder 2 has an internal thread 4 inside, and the lower part of the rotating column 3 has an external thread 5 that matches the internal thread 4. The rotating column 3 can be rotatably connected to the internal thread 4 inside the connecting cylinder 2 through the external thread 5. When the rotating column 3 is rotated, after rotating about a quarter turn, the orientation of the first rod 11 and the second rod 13 is changed, which facilitates storage.

[0033] Please refer to Figures 1 to 4 A connector 6 is installed on the rotating column 3. The connector 6 has an adjustment hole 7. A connecting shaft 9 is installed at the lower end of the first rod 11. The diameters of both ends of the connecting shaft 9 are matched with the internal diameter of the adjustment hole 7. The two ends of the connecting shaft 9 are located inside the adjustment hole 7. A contraction opening 8 is provided on the connector 6. The contraction opening 8 is connected to the interior of the adjustment hole 7. A fastening bolt 10 is installed on one side of the upper part of the connector 6. One end of the fastening bolt 10 passes through the contraction opening 8 and connects to the other side of the connector 6. By rotating the fastening bolt 10, the one end of the fastening bolt 10 is gradually separated from the upper part of the connector 6. At this time, the contraction opening 8 becomes larger, and the connecting shaft 9 can rotate inside the adjustment hole 7 to adjust the angle between the first rod 11 and the second rod 13. After adjusting to a suitable angle, the fastening bolt 10 is tightened, and the connecting shaft 9 is clamped by the upper part of the connector 6 to facilitate overall angle adjustment.

[0034] Please refer to Figure 1 and Figure 2 The upper end of the second rod 13 is equipped with a handle 17. The handle 17 has anti-slip textures in a circular pattern. By setting anti-slip textures on the handle 17, the friction at the grip can be effectively improved, preventing the handle 17 from slipping out of the hand and causing damage to the concrete surface.

[0035] The implementation principle of the retractable concrete finishing tool in this embodiment is as follows: During use, the finishing panel 1 is used to finish the concrete surface. When the length needs to be adjusted, the pin 16 is pressed, causing the spring 15 on the back of the pin 16 to retract. The pin 16 moves out of the pin hole 12 and into the mounting hole 14. At this time, the second rod 13 is pulled. When it moves to the appropriate position, the force of the spring 15 pushes the pin 16 out into the corresponding pin hole 12, fixing the second rod 13. The fastening bolt 10 is rotated, and one end of the fastening bolt 10 gradually... When the upper part of the connector 6 is separated, the shrinkage opening 8 becomes larger, and the connecting shaft 9 can rotate inside the adjustment hole 7 to adjust the angle between the first rod 11 and the second rod 13. After adjusting to the appropriate angle, tighten the fastening bolt 10, and clamp the connecting shaft 9 through the upper part of the connector 6. When not in use, rotate the rotating column 3. After the rotating column 3 rotates about a quarter turn, change the orientation of the first rod 11 and the second rod 13. Then loosen the fastening bolt 10 and adjust the first rod 11 and the second rod 13 to be parallel to the retracting panel 1, so as to facilitate the overall retraction and extension.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A retractable concrete finishing method, characterized in that: The device includes a receiving panel (1), a connecting cylinder (2) installed in the middle of the receiving panel (1), a rotating column (3) movably installed on the connecting cylinder (2), a first rod (11) adjustablely installed on the rotating column (3), a second rod (13) inserted into the first rod (11), an installation hole (14) opened on the second rod (13), a spring (15) installed inside the installation hole (14), a pin (16) opened at one end of the spring (15), and a pin hole (12) opened on the first rod (11).

2. The retractable concrete finishing method according to claim 1, characterized in that: There are multiple pin holes (12), which are evenly distributed on the first rod (11). The diameter of each pin hole (12) is matched with the diameter of each pin (16). Each pin (16) is located inside one of the pin holes (12).

3. The retractable concrete finishing method according to claim 1, characterized in that: The connecting cylinder (2) has an internal thread (4) inside, and the lower part of the rotating column (3) has an external thread (5) that matches the internal thread (4). The rotating column (3) can be rotatably connected to the internal thread (4) inside the connecting cylinder (2) through the external thread (5).

4. The retractable concrete finishing method according to claim 3, characterized in that: A connector (6) is installed on the rotating column (3), and an adjustment hole (7) is provided on the connector (6). A connecting shaft (9) is installed at the lower end of the first rod (11). The diameters of the two ends of the connecting shaft (9) are matched with the inner diameter of the adjustment hole (7). The two ends of the connecting shaft (9) are located inside the adjustment hole (7).

5. A retractable concrete finishing method according to claim 4, characterized in that: The connector (6) has a contraction opening (8), and the contraction opening (8) and the adjustment hole (7) are internally connected.

6. A retractable concrete finishing method according to claim 5, characterized in that: A fastening bolt (10) is installed on one side of the upper part of the connector (6), and one end of the fastening bolt (10) passes through the contraction port (8) and connects to the other side of the connector (6).

7. The retractable concrete finishing method according to claim 1, characterized in that: The upper end of the second rod (13) is equipped with a handle (17), and the handle (17) is provided with anti-slip texture in a circular pattern.

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