Concrete trowel

Abstract

The utility model discloses a concrete trowel machine, and relates to the technical field of trowel machines, including a trowel body, a hand-held bracket installed on one side of the trowel body and having an adjustable length, wherein the hand-held bracket includes a fixed rod rotatably arranged on the outer wall of the trowel body, a sliding sleeve rod slidably arranged on the outer wall of one end of the fixed rod, and handles fixedly arranged on both sides of one end of the sliding sleeve rod for people to hold, and a fixing mechanism is provided between the fixed rod and the sliding sleeve rod, and a plurality of positioning holes are provided on the top of the fixed rod. The utility model can adjust the overall length of the hand-held bracket by sliding the sliding sleeve rod outside the fixed rod, so that people can use the adjusted length of the hand-held bracket to drive the trowel body to move to smooth the concrete at a distant position, and people can use the fixing mechanism and the connecting mechanism to directly adjust and fix the length of the hand-held bracket from the handle end of the sliding sleeve rod, which is convenient for operation.

Description

Technical Field

[0001] The utility model relates to the technical field of trowel machines, in particular to a concrete trowel machine. Background Art

[0002] The concrete trowel is also called a finishing machine. Its main structure is a trowel rotor driven by a gasoline engine. A trowel is installed on the bottom of the cross in the middle of the rotor. The tilt direction of the trowel is consistent with the rotation direction of the rotor. The gasoline engine drives the V-belt to rotate the trowel rotor, thereby driving the trowel to rotate to smooth the concrete.

[0003] The patent with announcement number CN212957510U discloses "a handheld concrete trowel machine, including a motor, with a bracket fixedly installed on the outer surface of the motor. The handheld concrete trowel machine is provided with a push block. If the handle is stretched and extended, the push block can be pressed to the opposite side, so that the mounting block moves to the opposite side to squeeze the spring. When encountering the next set of slots, the push block is not squeezed, and the squeezing force of the spring is released and the recovery elastic force squeezes the push block to the opposite side to the outside of the fixed rod, thereby achieving the purpose of extension."

[0004] In response to the problem raised in the above-mentioned document specification that "most handheld concrete polishing machines are of fixed length and do not have the function of extension. If defects appear on the polished concrete floor, workers need to go back and polish it manually. In addition, workers will leave footprints along the way, which need to be polished, increasing the workload of workers", this application adopts another technical solution to solve the above-mentioned technical problem. Utility Model Content

[0005] The utility model aims at the disadvantage that the handheld concrete trowel machine has no extension function. If there are defects on the polished concrete floor, it is necessary to return to polish it manually. Moreover, the workers will leave footprints along the way, and the footprints left need to be polished, which increases the workload of the workers. The utility model provides a concrete trowel machine, and the specific technical scheme is as follows:

[0006] A concrete trowel, comprising a trowel body, a hand-held support with adjustable length installed on one side of the trowel body, wherein the hand-held support comprises a fixed rod rotatably arranged on the outer wall of the trowel body, a sliding sleeve rod slidably arranged on the outer wall of one end of the fixed rod, and handles fixedly arranged on both sides of one end of the sliding sleeve rod for people to hold;

[0007] A fixing mechanism is provided between the fixing rod and the sliding sleeve rod, a plurality of positioning holes are provided on the top of the fixing rod, the fixing mechanism comprises a connecting seat fixed at the bottom end of the sliding sleeve rod, a spring fixed at the top of the inner wall of the connecting seat, and an insert block fixed at the bottom end of the spring and inserted into the positioning hole, and a connecting mechanism for pulling the insert block away from the positioning hole is provided at the handle end of the sliding sleeve rod.

[0008] By adopting the above technical solution, the overall length of the hand support can be adjusted by sliding the sliding sleeve rod outside the fixed rod, so that people can use the adjusted hand support to drive the trowel body to move to smooth the concrete at a distant position.

[0009] Optionally, a through hole communicating with the positioning hole and used for drainage is formed at the bottom of the fixing rod.

[0010] By adopting the above technical solution, when the trowel is placed outdoors and exposed to rain, the through hole can discharge the rainwater that has entered the positioning hole.

[0011] Optionally, the connecting mechanism includes a connecting rope fixed at the handle end of the sliding sleeve rod, the bottom end of the connecting rope passes through the connecting seat and is fixedly connected to the top of the plug block, the top of the plug block is slidably connected in the connecting seat, the bottom end of the connecting rope is located inside the spring, the top of the connecting seat is rotatably provided with a guide wheel for guiding the connecting rope, and the outer wall of the top end of the connecting rope is fixedly provided with an anti-slip sleeve for people to hold.

[0012] By adopting the above technical solution, people can use the fixing mechanism and the connecting mechanism to directly adjust and fix the length of the handheld support from the handle end of the sliding sleeve rod, which is convenient for operation.

[0013] Optionally, a plurality of fixing plates are fixedly provided at the edge of the outer wall of the trowel machine, a threaded rod is provided in the inner thread of the fixing plate, a caster for facilitating the transportation of the trowel machine is fixedly installed at the bottom end of the threaded rod, and a crank handle is fixedly provided at the top end of the threaded rod for people to shake to drive the threaded rod to rotate.

[0014] By adopting the above technical solution, people can drive the casters to rise and fall after rotating the threaded rod, so that the casters can be lifted off the ground when troweling, and the troweling process will not be hindered. When the troweling machine needs to be moved, people can lower the casters to lift the trowel, so that people can push the troweling machine to move by rolling the casters.

[0015] In summary, the present invention has at least one of the following beneficial effects:

[0016] 1. By sliding the sliding sleeve rod outside the fixed rod, the overall length of the hand support can be adjusted, which makes it convenient for people to drive the trowel body to move through the adjusted hand support to smooth the concrete at a distant position. In addition, people can use the fixing mechanism and the connecting mechanism to directly adjust and fix the length of the hand support from the handle end of the sliding sleeve rod, which is convenient for operation.

[0017] 2. By shaking the handle and coordinating with the connection of the threaded rod, the casters can be driven to rise and fall. After the casters are lowered, the trowel body can be lifted up to adjust the height between the trowel body and the ground. The casters support and move the trowel to avoid damage to the trowel body due to movement on uneven roads during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 The utility model Figure 2 A magnified view of the structure in the middle;

[0021] Figure 4 The utility model Figure 2 Enlarged view of the middle fixed plate and caster structure.

[0022] Explanation of the reference numerals: 1. trowel body; 2. fixing rod; 21. sliding sleeve rod; 22. handle; 23. positioning hole; 24. through hole; 3. connecting seat; 31. spring; 32. plug block; 33. connecting rope; 34. guide wheel; 35. anti-slip sleeve; 4. fixing plate; 41. threaded rod; 42. caster; 43. crank handle. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-4 The utility model is described in further detail.

[0024] The utility model embodiment discloses a concrete trowel machine, referring to Figure 1-2 , including a trowel body 1, and a hand-held bracket installed on one side of the trowel body 1 and having an adjustable length. The trowel body 1 and the hand-held bracket constitute an existing concrete trowel, and its internal structure has been disclosed and will not be described in detail here.

[0025] Reference Figure 1-2 The hand support includes a fixed rod 2 rotatably arranged on the outer wall of the trowel body 1, a sliding sleeve rod 21 slidably arranged on the outer wall of one end of the fixed rod 2, and handles 22 fixed on both sides of one end of the sliding sleeve rod 21 for people to hold. People can hold the handles 22 and drive the trowel body 1 to move through the hand support to smooth the concrete.

[0026] People can adjust the overall length of the hand support by sliding the sliding sleeve rod 21 outside the fixed rod 2. When the hand support is shortened, the space occupied by the trowel machine can be reduced, which is convenient for transportation. When the hand support is lengthened, people can use the lengthened hand support to drive the trowel body 1 to move and smooth the concrete at a distant location.

[0027] Reference Figure 1-3 A fixing mechanism is provided between the fixing rod 2 and the sliding sleeve rod 21. A plurality of positioning holes 23 are provided on the top of the fixing rod 2. A through hole 24 communicating with the positioning holes 23 and used for drainage is provided on the bottom of the fixing rod 2. When the trowel is placed outdoors and exposed to rain, the through hole 24 can drain the rainwater entering the positioning hole 23.

[0028] Reference Figure 1-3 The fixing mechanism includes a connecting seat 3 fixed at the bottom end of the sliding sleeve rod 21, a spring 31 fixed at the top of the inner wall of the connecting seat 3, and an insert block 32 fixed at the bottom end of the spring 31 and inserted into the positioning hole 23. The top end of the insert block 32 is slidably connected in the connecting seat 3, and the connecting seat 3 can limit the insert block 32. Under the elastic force of the spring 31, the insert block 32 will be inserted into the corresponding positioning hole 23 to fix the overall length of the rear handrail bracket after adjustment.

[0029] Reference Figure 1-3 The handle 22 end of the sliding sleeve rod 21 is provided with a connecting mechanism for pulling the plug block 32 away from the positioning hole 23. The connecting mechanism includes a connecting rope 33 fixedly arranged at the handle 22 end of the sliding sleeve rod 21. The bottom end of the connecting rope 33 passes through the connecting seat 3 and is fixedly connected to the top of the plug block 32. The bottom end of the connecting rope 33 is located inside the spring 31. People can pull the connecting rope 33 from the handle 22 end of the sliding sleeve rod 21. The pulled connecting rope 33 will pull the plug block 32 away from the positioning hole 23, thereby detaching the fixed rod 2 from the sliding sleeve rod 21, making it convenient for people to adjust the length of the handhold bracket from the handle 22 end of the sliding sleeve rod 21, without having to go to the connecting seat 3 to adjust the length of the handhold bracket, which is more convenient.

[0030] Reference Figure 1-3 A guide wheel 34 for guiding the connecting rope 33 is rotatably provided at the top of the connecting seat 3. The guide wheel 34 can guide the connecting rope 33, reduce the contact area between the connecting rope 33 and the connecting seat 3, thereby reducing the wear of the connecting rope 33. The connecting rope 33 can be a thin steel wire rope.

[0031] Reference Figure 1-2 A non-slip sleeve 35 for people to hold is fixedly provided on the outer wall of the top end of the connecting rope 33, and people can hold the non-slip sleeve 35 to pull the connecting rope 33.

[0032] Reference Figure 2 and Figure 4A plurality of fixing plates 4 are fixedly provided at the edge of the outer wall of the trowel body 1, and a threaded rod 41 is provided in the inner thread of the fixing plate 4. A caster 42 for convenient transportation of the trowel machine is fixedly installed at the bottom end of the threaded rod 41. When people rotate the threaded rod 41, the caster 42 will be driven to rise and fall, so that the caster 42 can be raised to lift the caster 42 off the ground when troweling, and the trowel machine will not be hindered in the smoothing process. When the trowel machine needs to be moved, the caster 42 can be lowered to lift the trowel machine with the caster 42, so that people can push the trowel machine to move by rolling the caster 42, so as to avoid damage to the trowel machine body 1 caused by moving directly on uneven roads during transportation.

[0033] Reference Figure 2 and Figure 4 A crank 43 is fixedly provided at the top of the threaded rod 41 for people to shake to drive the threaded rod 41 to rotate. People can drive the threaded rod 41 to rotate by shaking the crank 43.

[0034] The implementation principle of the concrete trowel machine of the utility model embodiment is:

[0035] When in use, people can hold the handle 22 and use the hand-held bracket to drive the trowel body 1 to move to smooth the concrete;

[0036] When it is necessary to smooth concrete at a distant location and it is inconvenient to step on the concrete, people can use the anti-slip sleeve 35 to pull the connecting rope 33 from the handle 22 end of the sliding sleeve rod 21. The pulled connecting rope 33 will pull the plug block 32 away from the positioning hole 23, so that the fixing rod 2 and the sliding sleeve rod 21 are disconnected from each other. Then people can pull the sliding sleeve rod 21 to the outside of the fixing rod 2, so that the fixing rod 2 is slowly pulled out of the sliding sleeve rod 21, so as to adjust the overall length of the hand support.

[0037] When the hand support bracket reaches the required length, people can loosen the connecting rope 33 and continue to pull the sliding sleeve rod 21 toward the outside of the fixed rod 2. As the sliding sleeve rod 21 is pulled, the plug block 32 will be aligned with the corresponding positioning hole 23. At this time, under the elastic force of the spring 31, the plug block 32 will automatically insert into the corresponding positioning hole 23 to fix the overall length of the hand support bracket after adjustment, so that people can use the hand support bracket after lengthening to drive the trowel body 1 to move to smooth the concrete at a distant position.

[0038] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A concrete trowel machine, comprising a trowel body (1), and a hand-held support with adjustable length mounted on one side of the trowel body (1), characterized in that: The hand-held support comprises a fixed rod (2) rotatably arranged on the outer wall of the trowel body (1), a sliding sleeve rod (21) slidably arranged on the outer wall of one end of the fixed rod (2), and handles (22) fixedly arranged on both sides of one end of the sliding sleeve rod (21) for people to hold; A fixing mechanism is provided between the fixing rod (2) and the sliding sleeve rod (21); a plurality of positioning holes (23) are provided at the top of the fixing rod (2); the fixing mechanism comprises a connecting seat (3) fixedly provided at the bottom end of the sliding sleeve rod (21); a spring (31) fixedly provided at the top of the inner wall of the connecting seat (3); and an inserting block (32) fixedly provided at the bottom end of the spring (31) and inserted in the positioning hole (23); a connecting mechanism for pulling the inserting block (32) away from the positioning hole (23) is provided at the handle (22) end of the sliding sleeve rod (21).

2. The concrete trowel according to claim 1, characterized in that: A through hole (24) communicating with the positioning hole (23) and used for drainage is provided at the bottom of the fixing rod (2).

3. The concrete trowel machine according to claim 1, characterized in that: The connection mechanism comprises a connection rope (33) fixedly arranged at the end of the handle (22) of the sliding sleeve rod (21), and the bottom end of the connection rope (33) passes through the connection seat (3) and is fixedly connected to the top of the plug block (32).

4. The concrete trowel according to claim 3, characterized in that: The top end of the insert block (32) is slidably connected in the connection seat (3), and the bottom end of the connection rope (33) is located inside the spring (31).

5. The concrete trowel according to claim 4, characterized in that: A guide wheel (34) for guiding the connecting rope (33) is rotatably provided on the top of the connecting seat (3).

6. The concrete trowel according to claim 5, characterized in that: An anti-slip sleeve (35) for people to hold is fixedly provided on the outer wall of the top end of the connecting rope (33).

7. The concrete trowel according to claim 1, characterized in that: A plurality of fixing plates (4) are fixedly provided at the edge of the outer wall of the trowel body (1); the fixing plates (4) are provided with threaded rods (41) in the inner threads; and casters (42) are fixedly installed at the bottom ends of the threaded rods (41) for facilitating the transportation of the trowel machine.

8. The concrete trowel according to claim 7, characterized in that: A crank handle (43) is fixedly provided at the top end of the threaded rod (41) for people to shake to drive the threaded rod (41) to rotate.

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