Pneumatic type concrete trowelling device
By introducing trapezoidal brackets and leak-proof concrete leakage-proof mechanisms into the pneumatic concrete smoothing device, the problems of debris splashing and inner corner smoothing are solved, and the safety and smoothing effect are improved.
Patent Information
- Application Number
- CN202422464819.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The existing pneumatic concrete smoothing device can easily cause concrete debris to splash during the smoothing process, damage the operator and waste of raw materials. At the same time, the circular structure of the detachable flat plate is difficult to smooth the inner corners of the wall.
A concrete leakage-proof mechanism is adopted, including a trapezoidal bracket and a leakage-proof net, to limit the splash range of concrete debris, and the inner corner area is secondaryly smoothed through a hollow rectangular smear.
Effectively prevent concrete debris from splashing, protect operator safety, reduce waste of raw materials, and effectively smooth the inner corners of the wall to improve the smoothing effect.
Smart Images
Figure CN223269561U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of construction, in particular to a pneumatic concrete leveling device. Background Art
[0002] In the existing construction industry, in order to prevent water leakage and other problems in houses, concrete coatings are usually applied to the inner and outer walls of houses. While this coating has a filling and lubricating effect, it also enhances the overall stability of the building. In order to ensure the beauty and practicality of the building, a concrete smoothing device is usually used to smooth the entire concrete. The most commonly used drive mode for concrete smoothing devices is pneumatic drive.
[0003] Existing pneumatic concrete leveling devices usually install a leveling sleeve on the output shaft of the pneumatic motor and install a detachable trowel plate on the open end of the leveling sleeve. The separate structure of the detachable trowel plate and the leveling sleeve ensures that the detachable trowel plate can be quickly replaced when damaged.
[0004] Although the separate structure of the detachable trowel plate and the smoothing sleeve facilitates the replacement of the detachable trowel plate, during the smoothing process of the detachable trowel plate, since the smoothing method of the detachable trowel plate is achieved by the rotation of the pneumatic motor, some concrete debris will be splashed when the detachable trowel plate rotates. In order to fix the pneumatic concrete smoothing device, the operator is usually very close to the wall, so that the debris often splashes onto the human eyes and other parts of the body, thereby causing damage to the operator, and the splashing of concrete will cause a certain amount of raw material waste; and because the structure of the detachable trowel plate is usually a circular structure, dead corners often appear when smoothing the inner corner wall, and these dead corners can only be smoothed manually later. Utility Model Content
[0005] The technical problem to be solved by the present invention is that the existing pneumatic concrete leveling device cannot effectively prevent concrete debris from splashing during leveling, and because the detachable leveling plate is mostly a circular structure, a dead corner area will appear when leveling the inner corners of the wall connection.
[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: a pneumatic concrete smoothing device, including an air motor, a smoothing sleeve is provided on one side of the output shaft of the air motor, a detachable smoothing plate is provided on one side of the smoothing sleeve, and a concrete leakage prevention mechanism is provided on the outside of the smoothing sleeve, and the concrete leakage prevention mechanism includes a trapezoidal bracket located on one side of the air motor and a leakage prevention net located inside the trapezoidal bracket.
[0007] As an improvement, the output shaft of the pneumatic motor is connected to the bottom surface of the smoothing sleeve through a connecting key, and the bottom end of the smoothing sleeve is provided with a fixing bolt for fixing the pneumatic motor, and the fixing bolt passes through the pneumatic motor and the bottom surface of the smoothing sleeve.
[0008] As an improvement, the trapezoidal bracket includes a hollow rectangular trowel plate located outside the detachable trowel plate and a fixing sleeve located on one side of the pneumatic motor, and a fixing column corresponding to the fixing sleeve is provided at the bottom end of the output shaft of the pneumatic motor.
[0009] As an improvement, the fixing column is connected to the fixing sleeve through a bolt structure, the hollow rectangular trowel plate is connected to the outer wall of the fixing sleeve through several auxiliary rods, and the hollow rectangular trowel plate and the fixing sleeve and the auxiliary rods are all connected by welding.
[0010] As an improvement, the auxiliary rod is connected to the anti-leakage net through a binding rope, and the hollow rectangular trowel plate and the fixing sleeve are connected to the anti-leakage net through waterproof glue.
[0011] As an improvement, a hand-held handle is provided on the bottom surface of the pneumatic motor.
[0012] The advantages of the present invention over the prior art are that the device limits concrete debris generated when the detachable trowel plate rotates within a certain range through the anti-leakage net of the concrete anti-leakage mechanism, thereby preventing splashing concrete from entering the operator's eyes and other parts of the body, thereby protecting the operator's personal safety; and the hollow rectangular trowel plate of the trapezoidal bracket in the anti-leakage mechanism is tightly attached to the wall, which not only seals the wall but also performs secondary troweling on the concrete, facilitates troweling of wall corners, and reduces the range of blind spots. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a general structural diagram of a pneumatic concrete leveling device of the utility model.
[0014] Figure 2 The utility model is a cross-sectional view of the overall structure of a pneumatic concrete leveling device.
[0015] Figure 3 This is an exploded view of the overall structure of a pneumatic concrete leveling device of the utility model.
[0016] Figure 4 This is a structural diagram of a trapezoidal support of a pneumatic concrete leveling device of the present invention.
[0017] Figure 5 The utility model is a pneumatic motor structure diagram of a pneumatic concrete leveling device.
[0018] As shown in the figure: 1. Pneumatic motor; 11. Handle; 2. Trowel sleeve; 3. Removable trowel plate; 4. Concrete leakage prevention mechanism; 41. Trapezoidal bracket; 411. Hollow rectangular trowel plate; 412. Fixing sleeve; 413. Fixing column; 414. Auxiliary rod; 42. Anti-leakage net. DETAILED DESCRIPTION
[0019] The present invention will be described in further detail below with reference to the accompanying drawings.
[0020] As the instruction manual Figure 1 、 2 As shown, it includes an air motor 1, and a smoothing sleeve 2 is provided on one side of the output shaft of the air motor 1. The output shaft of the air motor 1 is connected to the bottom surface of the smoothing sleeve 2 through a connecting key, and the bottom end of the smoothing sleeve 2 is provided with a fixing bolt 21 for fixing the air motor 1. The fixing bolt 21 passes through the bottom surface of the air motor 1 and the smoothing sleeve 2. A detachable trowel plate 3 is provided on one side of the smoothing sleeve 2. The air motor 1 is connected to the pressure pump using an air pressure hose, and a connecting key is installed on the output shaft of the air motor 1. The connecting key through hole on the bottom surface of the smoothing sleeve 2 is put on the output shaft of the air motor 1, and the screw hole at the top of the output shaft of the air motor 1 and the through hole on the bottom surface of the smoothing sleeve 2 are aligned, and the fixing bolt 21 is screwed in to fix the two; the detachable trowel plate 3 is placed on the open end of the smoothing sleeve 2, and the two are fixedly connected using items such as waterproof glue or steel wire.
[0021] As the instruction manual Figure 2 、 3As shown in , 4, and 5, a concrete leakage prevention mechanism 4 is provided on the outside of the trowel sleeve 2, and the concrete leakage prevention mechanism 4 includes a trapezoidal bracket 41 located on one side of the pneumatic motor 1 and an anti-leakage net 42 located inside the trapezoidal bracket 41, and the trapezoidal bracket 41 includes a hollow rectangular trowel plate 411 located on the outside of the detachable trowel plate 3 and a fixed sleeve 412 located on one side of the pneumatic motor 1, and the bottom end of the output shaft of the pneumatic motor 1 is provided with a fixing column 413 corresponding to the fixed sleeve 412, and the fixing column 413 is connected to the fixed sleeve 412 through a bolt structure, and the hollow rectangular trowel plate 411 is connected to the outer wall of the fixed sleeve 412 through a plurality of auxiliary rods 414, and the hollow rectangular trowel plate 411 and the fixed sleeve 412 are connected to the auxiliary rod 414 by welding, and the auxiliary rod 414 is connected to the anti-leakage net 42 by a tying rope, and the hollow rectangular trowel plate 411 and the fixed sleeve 412 are connected to the anti-leakage net 4 by waterproof glue. 2 connection, the hollow rectangular trowel plate 411 and the fixing sleeve 412 are welded together using the auxiliary rod 414, so as to reduce the overall weight of the trapezoidal bracket 41 and reduce the burden on the operator, and the auxiliary rod 414 can serve as a fixed fulcrum for fixing the anti-leakage net 42 (just like the ribs and waterproof fabric of an umbrella), and the head and tail sides of the anti-leakage net 42 are respectively pasted to the hollow rectangular trowel plate 411 and the fixing sleeve 412 with waterproof glue to prevent the concrete from leaking, so that all the concrete is smoothed onto the wall or bottom surface to avoid waste of concrete. The hollow rectangular trowel plate 411 limits the splashing range of concrete slag while performing a secondary smoothing on the area after the detachable trowel plate 3 is rotated and smoothed, ensuring that the concrete is smoothed and the rotation marks caused by the rotation of the detachable trowel plate 3 are removed; the fixing sleeve 412 is put on the fixing column 413, the screw holes of the two are aligned, and the screws are screwed in to fix it to ensure that the trapezoidal bracket 41 will not loosen.
[0022] The bottom surface of the pneumatic motor 1 is provided with a handheld handle 11. In order to facilitate the start and stop of the pneumatic motor 1, the handheld handle 11 is usually installed on the bottom surface of the pneumatic motor 1, and the start and stop switch of the pneumatic motor 1 is installed inside the handheld handle 11.
[0023] During the specific implementation of the present invention, the switch of the pneumatic motor 1 is started, the handheld handle 11 is held, and the detachable trowel plate 3 on the side of the pneumatic motor 1 is placed on the area to be smoothed. The operator manually moves the position of the detachable trowel plate 3 so that the detachable trowel plate 3 is translated on the upper surface of the concrete. The concrete is smoothed by rotating the detachable trowel plate 3 (in order to ensure that the concrete does not fall off when smoothing the wall, a trapezoidal bracket 41 is installed on the outer wall of the detachable trowel plate 3, and the splashing range of the concrete slag is limited by installing a hollow rectangular trowel plate 411 on the bottom surface of the trapezoidal bracket 41. The anti-leakage net 42 inside the sealed trapezoidal bracket 41 is used to protect the operator so that the splashing concrete will not hurt the operator). When it moves to the right corner of the house, the pneumatic motor 1 is turned off, and the corner position is smoothed by the hollow rectangular trowel plate 411. The smoothing angle is automatically adjusted according to the actual situation.
[0024] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.
Claims
1. A pneumatic concrete trowel device, comprising an air motor (1), a trowel sleeve (2) provided on one side of an output shaft of the air motor (1), a detachable trowel plate (3) provided on one side of the trowel sleeve (2), and characterized in that: A concrete leakage prevention mechanism (4) is provided on the outer side of the trowel sleeve (2), and the concrete leakage prevention mechanism (4) comprises a ladder-shaped bracket (41) located on one side of the pneumatic motor (1) and a leakage prevention net (42) located inside the ladder-shaped bracket (41).
2. A pneumatic concrete leveling device according to claim 1, characterized in that: The output shaft of the pneumatic motor (1) is connected to the bottom surface of the smoothing sleeve (2) via a connecting key. The bottom end of the smoothing sleeve (2) is provided with a fixing bolt (21) for fixing the pneumatic motor (1). The fixing bolt (21) passes through the bottom surfaces of the pneumatic motor (1) and the smoothing sleeve (2).
3. The pneumatic concrete leveling device according to claim 1, characterized in that: The trapezoidal bracket (41) comprises a hollow rectangular trowel plate (411) located outside the detachable trowel plate (3) and a fixing sleeve (412) located on one side of the pneumatic motor (1); a fixing column (413) corresponding to the fixing sleeve (412) is provided at the bottom end of the output shaft of the pneumatic motor (1).
4. The pneumatic concrete leveling device according to claim 3, characterized in that: The fixing column (413) is connected to the fixing sleeve (412) through a bolt structure, the hollow rectangular trowel plate (411) is connected to the outer wall of the fixing sleeve (412) through a plurality of auxiliary rods (414), and the hollow rectangular trowel plate (411) and the fixing sleeve (412) are all connected to the auxiliary rods (414) by welding.
5. The pneumatic concrete leveling device according to claim 4, characterized in that: The auxiliary rod (414) is connected to the anti-leakage net (42) through a binding rope, and the hollow rectangular trowel plate (411) and the fixing sleeve (412) are both connected to the anti-leakage net (42) through waterproof glue.
6. The pneumatic concrete leveling device according to claim 1, characterized in that: The bottom surface of the pneumatic motor (1) is provided with a hand-held handle (11).