Handheld trowelling device

Abstract

The utility model relates to the technical field of road construction equipment, in particular to a handheld trowelling device which comprises a trowelling part, a handheld part and a connecting part, the connecting part is composed of a first connecting piece arranged on the trowelling part, a second connecting piece arranged at the end of the handheld part and a movable piece, a through hole and a kidney-shaped hole are formed in the first connecting piece, and the second connecting piece is arranged in the kidney-shaped hole. The movable part comprises a pressing part and a movable pin fixed to the pressing part, the pressing part drives the movable pin to move along the kidney-shaped hole, clamping jaws matched with the movable pin are arranged at the four corners of the second connecting part, and the pressing part moves in the axial direction of the through hole and drives the movable pin to be close to or away from the clamping jaws, so that disassembly and assembly of the connecting parts are achieved. By means of the design, disassembly and assembly of the connecting piece can be rapidly achieved, operation is simplified, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to road construction equipment technical field especially, relates to a handheld trowelling device. BACKGROUND

[0002] In road construction, especially when carrying out small area repair or in special area construction, the traditional large trowelling equipment is difficult to realize flexible operation due to the bulky size. Therefore, the handheld trowelling device as a more flexible tool has been gradually widely applied.

[0003] However, the trowelling part and handheld part of the existing handheld trowelling device usually adopt fixed connection mode, such as welding the two together. This design mode makes it impossible to disassemble and replace according to the construction demand once the size of the trowelling part is determined. Figure 1 As shown, the construction surface is groove shape, and the user cannot quickly replace the size of the trowelling part when facing different width sizes of construction surface, resulting in inconvenience in the construction process.

[0004] The information disclosed in this BACKGROUND section is only for the purpose of enhancing the understanding of the background of the present utility model and should not be treated as acknowledging that the information constitutes prior art that is already known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a handheld trowelling device to effectively solve the problem in the background art.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme of a handheld trowelling device, which comprises a trowelling part, a handheld part, and a connecting part connecting the trowelling part and the handheld part.

[0007] The connecting part comprises a first connecting piece arranged on the trowelling part, a second connecting piece arranged at the end of the handheld part, and a movable piece arranged in part of the first connecting piece.

[0008] The first connecting piece is internally provided with a through hole and a waist-shaped hole perpendicular to the through hole, the movable piece comprises a pressing piece arranged at both ends of the through hole and a movable pin passing through the waist-shaped hole and fixedly arranged with the pressing piece, the pressing piece drives the movable pin to move along the waist-shaped hole, the through hole is internally provided with an elastic piece, and both ends of the elastic piece abut against the pressing piece to drive the movable pin to reset.

[0009] The second connecting piece is provided with a claw corresponding to the movable pin at four corners, the pressing piece moves axially along the through hole, drives the movable pin to move along the waist-shaped hole, and makes the movable pin close to or away from the claw, so that the first connecting piece and the second connecting piece can be disassembled and assembled.

[0010] Further, the first connecting piece is provided with a counterbore, and a locking piece for connecting with the smearing part is arranged in the counterbore; the second connecting piece is provided with a positioning protrusion, and the positioning protrusion is matched with the locking piece in the counterbore to realize the positioning of the first connecting piece and the second connecting piece.

[0011] Further, the end of the positioning protrusion is provided with a guide surface.

[0012] Further, at least one flat surface is arranged on the outer circumferential surface of the pressing piece to realize the positioning in the circumferential direction of the pressing piece.

[0013] Further, the end of the pressing piece is provided with a guide column, and the guide column is arranged inside the elastic piece to realize the compression guiding of the elastic piece.

[0014] Further, the two clamping claws of the second connecting piece are arranged symmetrically along the length direction, and the clamping claws are provided with a first inclined surface, the first inclined surface is in contact with the movable pin to limit the height direction of the first connecting piece.

[0015] Further, the smearing part comprises a horizontal plate and a vertical plate which is perpendicular to the horizontal plate.

[0016] Further, the hand-held part comprises an outer tube, an inner tube, and an adjusting piece arranged between the outer tube and the inner tube, and the adjusting piece is used to control the insertion length of the inner tube in the outer tube.

[0017] Further, the adjusting piece comprises a compression ring arranged at the end of the outer tube and a locking ring matched with the compression ring, the locking ring comprises a body and a following part, the end of the body is provided with a second inclined surface, the outer circumferential surface of the body is provided with an external thread, the inside of the locking ring is provided with a third inclined surface and an internal thread, and the third inclined surface compresses the second inclined surface in the meshing process of the external thread and the internal thread.

[0018] Further, the end of the body is provided with a plurality of grooves along the axial direction of the locking ring, and the bottom of the grooves is provided with a circular arc groove.

[0019] The utility model discloses beneficial effect is: when needing to replace different specifications of trowelling department, or needing to dismantle trowelling department and store or wash, user only needs to hold down the presser of both ends and extrude inwards, drives the movable pin to move inwards, makes the movable pin separate from the limit of dog, thereby making the second connecting piece and the first connecting piece separate, correspondingly, when installing trowelling department, only need to press the presser of both ends inwards, simultaneously with the second connecting piece aligning and buckling to the first connecting piece, after loosening, the elastic part resets the presser, makes the movable pin automatically insert into the dog of the second connecting piece four corners, completes quick positioning, through the design of movable element and presser, can conveniently and quickly realize the dismounting of the first connecting piece and the second connecting piece, and user only needs to press the presser, and the movable pin will move along the waist type hole, makes it close to or away from the dog, thereby completing the dismounting operation, greatly improves the replacement efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only is some embodiment in the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0021] Figure 1 It is the structure diagram of handheld trowelling device in background art;

[0022] Figure 2 It is the structure diagram of handheld trowelling device;

[0023] Figure 3 It is the partial enlarged view of A in Figure 2

[0024] Figure 4 It is the explosion diagram of connecting portion in trowelling department;

[0025] Figure 5 It is the structure diagram of compression ring;

[0026] Figure 6 It is the structure diagram of locking ring.

[0027] ​Reference numerals: 1. Smoothing part; 11. Horizontal plate; 12. Vertical plate; 2. Hand-held part; 21. Outer tube; 22. Inner tube; 3. Connecting part; 31. First connecting piece; 311. Through hole; 312. Waist-shaped hole; 313. Countersunk hole; 314. Locking piece; 32. Second connecting piece; 321. Claw; 321a. First inclined surface; 322. Positioning protrusion; 322a. Guide surface; 33. Movable part; 331. Pressing piece; 331a. Flat surface; 331b. Guide post; 332. Movable pin; 333. Spring; 4. Adjusting piece; 41. Pressure ring; 411. Body; 411a. Second inclined surface; 411b. External thread; 411c. Groove; 411d. Arc groove; 412. Edge; 42. Locking ring; 421. Third inclined surface; 422. Internal thread.

[0028] 01. Construction surface. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figures 2 to 6 As shown: A handheld smoothing device includes: a smoothing part 1, a handheld part 2, and a connecting part 3 connecting the smoothing part 1 and the handheld part 2;

[0033] The connecting part 3 includes a first connecting member 31 disposed on the smoothing part 1, a second connecting member 32 disposed at the end of the hand-held part 2, and a movable member 33 disposed within a portion of the first connecting member 31;

[0034] The first connecting piece 31 is internally provided with a through hole 311 and a waist-shaped hole 312 vertically penetrating the through hole 311, the movable piece 33 includes a pressing piece 331 provided at both ends of the through hole 311 and a movable pin 332 penetrating the waist-shaped hole 312 and fixedly arranged with the pressing piece 331, the pressing piece 331 drives the movable pin 332 to move along the waist-shaped hole 312, the through hole 311 is internally provided with an elastic piece, and both ends of the elastic piece abut against the pressing piece 331 to drive the movable pin 332 to reset;

[0035] The four corners of the second connecting piece 32 are provided with clamping claws 321 adapted to the movable pin 332, the pressing piece 331 moves axially along the through hole 311 to drive the movable pin 332 to move along the waist-shaped hole 312, so that the movable pin 332 is close to or away from the clamping claws 321, thereby realizing the disassembly and assembly of the first connecting piece 31 and the second connecting piece 32.

[0036] When it is necessary to replace the troweling part 1 of different specifications or to disassemble the troweling part 1 for cleaning, the user only needs to press the pressing pieces 331 at both ends and squeeze inward to drive the movable pin 332 to move inward, so that the movable pin 332 is disengaged from the limiting of the clamping claws 321, thereby separating the second connecting piece 32 from the first connecting piece 31, correspondingly, when installing the troweling part 1, the user only needs to press the pressing pieces 331 at both ends inward, simultaneously aligns and buckles the second connecting piece 32 to the first connecting piece 31, and after releasing the hand, the elastic piece resets the pressing piece 331 to automatically insert the movable pin 332 into the clamping claws 321 at the four corners of the second connecting piece 32 to complete the quick positioning, the whole process is simple and convenient to operate and quick to disassemble and assemble.

[0037] Through the design of the movable piece 33, the disassembly and assembly of the first connecting piece 31 and the second connecting piece 32 can be conveniently and quickly realized, the user only needs to press the pressing piece 331, and the movable pin 332 will move along the waist-shaped hole 312 to be close to or away from the clamping claws 321, thereby completing the disassembly and assembly operation, and the replacement efficiency is greatly improved.

[0038] Through the structure of the movable pin 332 and the elastic piece, the troweling part 1 can be quickly disassembled and replaced according to different construction requirements, the adaptability of the handheld troweling device is increased, the device can cope with different sizes of construction surfaces, the design of the elastic piece not only ensures the automatic reset of the movable pin 332, but also ensures that the connecting piece 3 can remain stable after disassembly and assembly, avoids loosening or falling off, and ensures the stability and reliability of the equipment.

[0039] Compared with the traditional handheld troweling device adopting welding or other fixed connection methods, the disassembly and assembly method of the present application is more convenient, the operation process does not need complex tools or additional steps, and the user experience is significantly improved, since the disassembly and assembly process is simplified, the user can quickly adjust the size of the troweling part 1 or perform cleaning and maintenance during the construction process, thereby improving the work efficiency and the practical application value of the device.

[0040] Wherein, the elastic member is a spring 333, or other elastic material or mechanical mechanism, all within the scope of the application.

[0041] As a preferred embodiment of the above, the first connecting piece 31 is provided with a countersunk hole 313, and a locking piece 314 is arranged in the countersunk hole 313 for connecting with the troweling part 1; the second connecting piece 32 is provided with a positioning protrusion 322, which cooperates with the locking piece 314 in the countersunk hole 313 to realize positioning of the first connecting piece 31 and the second connecting piece 32. Specifically, during installation of the first connecting piece 31 and the second connecting piece 32, the positioning protrusion 322 is gradually inserted into the countersunk hole 313, thereby positioning the first connecting piece 31 and the second connecting piece 32, and realizing left-right and forward-backward movement of the second connecting piece 32, which improves assembly efficiency and reduces the difficulty of manual docking and adjustment, and is more convenient to operate.

[0042] In this embodiment, the end of the positioning protrusion 322 is provided with a guide surface 322a, which can be an inclined angle or a rounded corner, which can effectively guide the docking of the first connecting piece 31 and the second connecting piece 32, avoiding obstruction or misalignment during docking. In this way, the positioning protrusion 322 can be more smoothly inserted into the countersunk hole 313, simplifying the installation process.

[0043] Wherein, at least one flat surface 331a is arranged on the outer circular surface of the pressing piece 331 for positioning in the circumferential direction of the pressing piece 331 to prevent the pressing piece 331 from rotating, thereby facilitating insertion of the movable pin 332 into the mounting hole of the pressing piece 331.

[0044] As a preferred embodiment of the above, the end of the pressing piece 331 is provided with a guide column 331b, which is provided with an internal elastic member for compression and guidance of the elastic member. Specifically, the guide columns 331b at both ends are inserted into both ends of the spring 333, effectively guiding the compression path of the spring 333 and avoiding deviation or irregular deformation of the spring 333 during compression. In this way, the spring 333 can be uniformly stressed, improving the working efficiency and stability of the spring 333.

[0045] In this embodiment, the two clamping jaws 321 of the second connecting piece 32 are symmetrically arranged along the length direction thereof, and the clamping jaw 321 is provided with a first inclined surface 321a, which is in contact with the movable pin 332 to limit the height direction of the first connecting piece 31 and prevent the first connecting piece 31 from moving up and down, thereby ensuring stable connection of the first connecting piece 31 and the second connecting piece 32 and avoiding connection instability or loosening caused by upward and downward displacement. The design of the first inclined surface 321a limits the height direction movement of the first connecting piece 31, thereby improving the stability between the connecting pieces 3.

[0046] The leveling part 1 comprises a horizontal plate 11 and a vertical plate 12 perpendicular to the horizontal plate 11, which is used to block the excess concrete and prevent the concrete from overflowing or spreading too much, so as to ensure that the leveling part 1 can accurately control the flatness of the concrete during the construction process and improve the construction quality.

[0047] As a preferred embodiment of the above embodiment, the handheld part 2 comprises an outer tube 21, an inner tube 22, and an adjusting part 4 arranged between the outer tube 21 and the inner tube 22, which is used to control the insertion length of the inner tube 22 in the outer tube 21.

[0048] In this embodiment, the adjusting part 4 comprises a compression ring 41 arranged at the end of the outer tube 21 and a locking ring 42 matched with the compression ring 41, the locking ring 42 comprises a body 411 and a following part 412, the end of the body 411 is provided with a second inclined surface 411a, and an outer thread 411b is arranged on the outer circular surface of the body 411, the locking ring 42 is internally provided with a third inclined surface 421 and an inner thread 422, and the third inclined surface 421 presses the second inclined surface 411a during the engagement of the outer thread 411b and the inner thread 422, so as to make the second inclined surface 411a press the inner tube 22 and lock the inner tube 22, and the simple locking of the inner tube 22 can be realized by rotating the locking ring 42, the engagement of the outer thread 411b and the inner thread 422, and the pressing effect of the first inclined surface 321a, and the user only needs to rotate the locking ring 42 to complete the locking operation of the inner tube 22, which simplifies the operation process, is convenient and fast, and the pressing effect of the second inclined surface 411a and the third inclined surface 421 ensures that the inner tube 22 is firmly locked and prevents the inner tube 22 from loosening or shifting during use, thereby improving the stability and reliability of the device.

[0049] In this embodiment, the end of the body 411 is provided with a plurality of grooves 411c in the axial direction of the locking ring 42, and a circular arc groove 411d is arranged at the bottom of the groove 411c, so as to facilitate the deformation of the second inclined surface 411a to the inner tube 22 under extrusion, effectively assist the extrusion of the second inclined surface 411a to the inner tube 22 during the locking process, ensure that the inner tube 22 is in closer contact with the outer tube 21, thereby enhancing the locking effect of the inner tube 22, preventing the inner tube 22 from loosening or shifting during use, and through the matching design of the groove 411c and the circular arc groove 411d, the inner tube 22 can better adapt to the shape of the outer tube 21, improve the fixity of the inner tube 22 in the outer tube 21, reduce the loosening or shifting caused by external force, and improve the use reliability of the device.

[0050] The person skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description are only for explaining the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed for protection. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hand-held trowelling device, characterised in that, The application relates to a trowel, which comprises a troweling part, a hand-holding part and a connecting part connecting the troweling part and the hand-holding part. The connecting part comprises a first connecting piece arranged on the troweling part, a second connecting piece arranged at the end of the hand-holding part and a movable piece arranged in the first connecting piece. The first connecting piece is internally provided with a through hole and a waist-shaped hole perpendicular to the through hole, the movable piece comprises press pieces arranged at both ends of the through hole and a movable pin penetrating through the waist-shaped hole and fixedly arranged with the press pieces, the press pieces drive the movable pin to move along the waist-shaped hole, the through hole is internally provided with elastic pieces, and the elastic pieces are in abutment with the press pieces at both ends, so as to drive the movable pin to reset. The second connecting piece is provided with claws adapted to the movable pin at four corners, the press pieces move axially along the through hole, drive the movable pin to move along the waist-shaped hole, and make the movable pin close to or away from the claws, so as to realize the disassembly of the first connecting piece and the second connecting piece. The first connecting piece is provided with a countersunk hole, the countersunk hole is internally provided with a locking piece for connecting the troweling part, the second connecting piece is provided with a positioning protrusion, and the positioning protrusion is matched with the locking piece in the countersunk hole, so as to realize the positioning of the first connecting piece and the second connecting piece.

2. The hand-held troweling device of claim 1, wherein The end of the positioning protrusion is provided with a guide surface.

3. The hand-held troweling device of claim 2, wherein, At least one plane is arranged on the outer circumferential surface of the press piece, so as to realize the positioning in the circumferential direction of the press piece.

4. The hand-held troweling device of claim 1, wherein The end of the press piece is provided with a guide column, the guide column is arranged in the interior of the elastic piece, and the guide column is used for the compression and guidance of the elastic piece.

5. The hand-held troweling device of claim 1, wherein, The two claws of the second connecting piece are symmetrically arranged along the length direction, and the claws are provided with first inclined surfaces, the first inclined surfaces are in contact with the movable pin, and the first inclined surfaces limit the height direction of the first connecting piece.

6. The hand-held troweling device of claim 1, wherein The troweling part comprises a horizontal plate and a vertical plate perpendicular to the horizontal plate.

7. The hand-held troweling device of claim 1, wherein The hand-holding part comprises an outer tube, an inner tube and an adjusting piece arranged between the outer tube and the inner tube, and the adjusting piece is used for controlling the insertion length of the inner tube in the outer tube.

8. The hand-held troweling device of claim 1, wherein The adjusting piece comprises a compression ring arranged at the end of the outer tube and a locking ring matched with the compression ring, the locking ring comprises a body and a following part, the end of the body is provided with a second inclined surface, the outer circumferential surface of the body is provided with an external thread, the interior of the locking ring is provided with a third inclined surface and an internal thread, and the third inclined surface compresses the second inclined surface in the meshing process of the external thread and the internal thread.

9. The hand-held troweling device of claim 8, wherein, The end of the body is provided with a plurality of grooves in the axial direction of the locking ring, and the bottom of the grooves is provided with a circular arc groove.

10. The hand-held troweling device of claim 9, wherein, ​

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