Handheld concrete troweling device

Abstract

The utility model discloses a handheld concrete troweling device, and relates to the technical field of troweling machines. The troweling device comprises a troweling seat and a telescopic rod, and further comprises a grip, a transmission mechanism, a limiting clamping block, a fixing bridle and a connecting piece. The holding rod in the horizontal state is pushed to turn upwards, the holding rod drives the rotating rod and the first bevel gear to rotate, the transmission wheel is driven to rotate through transmission of the first bevel gear and the second bevel gear, and then transmission of the transmission wheel and the toothed plate is conducted, so that the toothed plate slides on the surface of the sliding block, and the two sets of limiting clamping blocks are pushed to move oppositely; the two sets of limiting clamping blocks are attached to the surface of the rear half part of the connecting piece, the surface of the front half part of the connecting piece is attached to the inner wall of the positioning groove, rapid limiting and fixing between the grip and the connecting piece are achieved, the fixing bridle is worn on the upper body of a worker through a waistband and a strap, and the original mode that equipment can only be pushed to move through arm strength is changed into the mode that the equipment can only be pushed to move through arm strength. And the equipment is pushed to move by virtue of the strength of the waist, the abdomen and the upper body.

Description

Technical Field

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

[0002] In the field of construction engineering, the surface of concrete needs to be smoothed after pouring to improve the strength, flatness and smoothness of the structure surface. Handheld concrete smoothing machines are widely used in various concrete construction scenarios.

[0003] The existing handheld concrete trowel drives the bottom trowel disc to rotate at high speed when working, and utilizes the friction and extrusion between the trowel disc and the concrete surface to carry out slurry extraction, compaction, smoothing and polishing on the concrete surface from the initial setting to the final setting stage. For example, Chinese patent publication number CN221219565U discloses a handheld concrete trowel for decoration and decoration projects, comprising a frame, a driving motor, a rotor, a trowel and a handle, wherein a first hinged seat is connected to the middle of the frame.

[0004] However, when a handheld trowel is used, the power to move the equipment on the concrete surface relies on the operator's arm strength to push it. The trowel itself has a certain weight. The operator not only needs to overcome the working resistance, but also needs to bear the weight of the equipment itself. In addition, when continuous operation is required, the thrust is repeatedly applied for a long time and at a high frequency, causing the operator's arms and shoulders to quickly fatigue and ache, affecting the use and operation of the equipment. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a handheld concrete trowel device to solve the problem that the power for the equipment to move on the concrete surface depends on the operator's arm strength to push it.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions: a handheld concrete troweling device, comprising a troweling seat and a telescopic rod, and also comprising a handle, a transmission mechanism, a limit clamp, a fixed strap and a connecting piece. The telescopic rod is rotatably installed on the top of the troweling seat, and the free end of the telescopic rod is rotatably connected to the handle. The surface of the handle is provided with a transmission mechanism, and the rotating end of the handle is engaged with the rotating end of the transmission mechanism. The movable end of the transmission mechanism is fixedly installed with a limit clamp, and the front side of the fixed strap is fixedly installed with a connecting piece. The rear side of the handle is provided with a groove corresponding to the connecting piece, and the limit clamps are located on both sides of the rear of the groove and are arranged corresponding to the connecting piece.

[0007] The handle includes a rotating seat, a positioning plate and a positioning slot. The front end of the rotating seat is rotatably mounted on the free end of the telescopic rod. The rear side of the rotating seat is fixedly mounted with the positioning plate, and the rear side of the positioning plate is provided with a positioning slot.

[0008] The handle also includes a grip rod, a rotating rod and a first bevel gear. There are two groups of grip rods, which are rotatably installed on the left and right ends of the rotating seat respectively. The rotating rod is fixedly installed on one end of the grip rod close to the rotating seat. The rotating rod passes through the surface of the rotating seat, and the first bevel gear is fixedly mounted on the free end thereof.

[0009] The transmission mechanism and the limiting clamping blocks are provided in two groups, and are symmetrically arranged with respect to the positioning plate. The two groups of limiting clamping blocks are located on the left and right sides behind the first bevel gear.

[0010] The inner wall of the positioning groove is fitted with the front half of the connecting piece, and the adjacent surfaces of the two groups of limiting clamps are fitted with the rear half of the connecting piece.

[0011] The transmission mechanism includes a top plate, a transmission wheel, a second bevel gear, a slider and a tooth plate. The top plate is fixedly installed on the top of the handle. A rotating shaft is rotatably installed on the bottom of the top plate. The transmission wheel is fixedly installed on the surface of the rotating shaft. The second bevel gear is fixedly installed on the surface of the rotating shaft. The slider is fixedly installed on the bottom of the top plate. The tooth plate is slidably mounted on the surface of the slider.

[0012] The fixing belt comprises a supporting plate, a waist belt and a shoulder strap. A connector is fixedly installed on the front side of the supporting plate. The left and right sides of the supporting plate are fixedly connected to the waist belt. The front side of the waist belt is fixedly connected to the shoulder strap.

[0013] The beneficial effects of the utility model are as follows:

[0014] The present invention can realize the rotation of the gear wheel and the transmission gear of the present invention, and the gear wheel and the transmission gear wheel are driven to rotate by the first bevel gear and the second bevel gear, and the transmission gear wheel and the transmission gear wheel are driven to rotate by the transmission gear and the gear wheel, so that the gear wheel slides on the surface of the slider, pushing the two sets of limit clamps to move toward each other, and the two sets of limit clamps are affixed to the rear surface of the connecting piece, and the front surface of the connecting piece is affixed to the inner wall of the positioning groove, so that the fast limit fixation between the handle and the connecting piece is achieved. The fixing belt is worn on the upper body of the worker through the waist belt and the shoulder strap, so that the worker can insert the connecting piece into the positioning groove when performing continuous work, and drive the limit clamp to connect and fix the connecting piece with the handle, and switch the original method of pushing the equipment to move by relying on the strength of the arm to relying on the strength of the waist, abdomen and upper body to push the equipment to move, and the arm assists in adjusting the direction, thereby greatly reducing the burden on the worker's hands and avoiding the adverse effects of arm fatigue on the use and operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the first partial structure of the utility model;

[0017] Figure 3 This is a first partial bottom view schematic diagram of the present invention;

[0018] Figure 4 yes Figure 3 A magnified schematic diagram of the middle part A;

[0019] Figure 5 This is a schematic diagram of the second partial structure of the utility model;

[0020] Figure 6 It is a second partial bottom view schematic diagram of the utility model.

[0021] Figure numerals: 1. polishing seat; 2. telescopic rod; 3. handle; 301. rotating seat; 302. positioning plate; 303. positioning groove; 304. grip; 305. rotating rod; 306. first bevel gear; 4. transmission mechanism; 401. top plate; 402. transmission wheel; 403. second bevel gear; 404. slider; 405. tooth plate; 5. limiting clamp; 6. fixing strap; 601. support plate; 602. waist belt; 603. shoulder strap; 7. connecting part. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation. The structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement solutions or common means, they will not be described in detail herein, but they still fall within the scope of protection of this application.

[0023] Figures 1-6 This is the best embodiment of the present invention, Figure 1 -Attached Figure 6 The utility model is further described.

[0024] A handheld concrete troweling device comprises a troweling seat 1 and a telescopic rod 2, and also comprises a handle 3, a transmission mechanism 4, a limiting clamp 5, a fixing belt 6 and a connecting piece 7. The telescopic rod 2 is rotatably mounted on the top of the troweling seat 1, and the free end of the telescopic rod 2 is rotatably connected to the handle 3. Fastening bolts are provided at the connection between the troweling seat 1 and the telescopic rod 2, and at the connection between the telescopic rod 2 and the handle 3. A transmission mechanism 4 is provided on the surface of the handle 3. The rotating end of the handle 3 is engaged with the rotating end of the transmission mechanism 4. The moving end of the transmission mechanism 4 is fixedly mounted with a limiting clamp 5. The front side of the fixing belt 6 is fixedly mounted with a connecting piece 7. A groove corresponding to the connecting piece 7 is provided on the rear side of the handle 3, and the limiting clamp 5 is located on both sides of the rear of the groove, corresponding to the connecting piece 7.

[0025] Specifically, the concrete floor is smoothed by the smoothing seat 1, the distance between the handle 3 and the smoothing seat 1 is adjusted by the telescopic rod 2, and the smoothing seat 1, the telescopic rod 2 and the handle 3 after the tilt angle is adjusted are fixed by fastening bolts, and the transmission mechanism 4 is driven to operate by the rotating end of the handle 3, and the transmission is transmitted to the limit clamp 5 to drive it to move horizontally, and the connector 7 inserted into the groove of the handle 3 is quickly limited by the limit clamp 5, and the connector 7 is worn to the waist of the staff through the fixing belt 6.

[0026] The handle 3 includes a rotating base 301, a positioning plate 302 and a positioning slot 303. The front end of the rotating base 301 is rotatably mounted on the free end of the telescopic rod 2. The rear side of the rotating base 301 is fixedly mounted with the positioning plate 302. The rear side of the positioning plate 302 is provided with a positioning slot 303. The positioning slot 303 is arranged corresponding to the connecting member 7.

[0027] Specifically, through the connection between the positioning groove 303 and the connecting member 7 , the staff can transmit force from the connecting member 7 to the handle 3 .

[0028] The handle 3 further includes a grip 304, a rotating rod 305 and a first bevel gear 306. The grip 304 is provided in two groups, which are rotatably mounted on the left and right ends of the rotating base 301, respectively. The rotating rod 305 is fixedly mounted on one end of the grip 304 close to the rotating base 301. The rotating rod 305 passes through the surface of the rotating base 301, and the first bevel gear 306 is fixedly mounted on the free end of the rotating rod 305. The first bevel gear 306 is arranged corresponding to the transmission mechanism 4.

[0029] Specifically, the rotation of the handle 304 drives the rotating rod 305 to rotate, which drives the first bevel gear 306 on the surface of the rotating rod 305 to rotate, thereby driving the transmission mechanism 4 to operate.

[0030] There are two sets of transmission mechanisms 4 and limiting clamps 5, which are symmetrically arranged with respect to the positioning plate 302. The two sets of limiting clamps 5 are located on the left and right sides behind the first bevel gear 306.

[0031] Specifically, the two sets of transmission mechanisms 4 drive the two sets of limiting clamps 5 to move toward or in opposite directions, so that the limiting clamps 5 limit and fix the connecting member 7 at the first bevel gear 306, or stop limiting away from the connecting member 7.

[0032] The inner wall of the positioning groove 303 is fitted with the front half of the connecting member 7, and the adjacent surfaces of the two sets of limiting clamps 5 are fitted with the rear half of the connecting member 7;

[0033] Specifically, the positioning groove 303 and the limiting clamp 5 are in close contact with the surface of the connecting member 7, thereby ensuring that the staff can stably transmit the force through the connection between the connecting member 7 and the handle 3.

[0034] The transmission mechanism 4 includes a top plate 401, a transmission wheel 402, a second bevel gear 403, a slider 404 and a tooth plate 405. The top plate 401 is fixedly mounted on the top of the rotating seat 301. The bottom of the top plate 401 is rotatably mounted with a rotating shaft. The surface of the rotating shaft is fixedly mounted with a transmission wheel 402. The surface of the rotating shaft is fixedly mounted with a second bevel gear 403, and the second bevel gear 403 is located below the transmission wheel 402. The second bevel gear 403 is meshed with the first bevel gear 306. A slider 404 is fixedly mounted on the bottom of the top plate 401. A tooth plate 405 is slidably mounted on the surface of the slider 404. The tooth plate 405 is meshed with the transmission wheel 402. A limiting clamp 5 is fixedly mounted on one end of the tooth plate 405 close to the positioning plate 302.

[0035] Specifically, the second bevel gear 403 is driven to rotate by the first bevel gear 306, the second bevel gear 403 drives the rotating shaft to rotate, the rotating shaft drives the transmission wheel 402 to rotate, and the transmission wheel 402 pushes the tooth plate 405 to slide along the surface of the slider 404, thereby controlling the limit clamp 5 to move horizontally.

[0036] The fixing belt 6 includes a support plate 601, a waist belt 602 and a shoulder strap 603. A connector 7 is fixedly installed on the front side of the support plate 601. The waist belts 602 are fixedly connected to the left and right sides of the support plate 601. A buckle is provided on the free end of one set of waist belts 602, and a hole is opened on the surface of the free end of the other set of waist belts 602. The front side of the waist belt 602 is fixedly connected to the shoulder strap 603. The inner side of the shoulder strap 603 near its free end is provided with a Velcro.

[0037] Specifically, the waist belt 602 is worn on the staff's waist, and the shoulder strap 603 is worn on the staff's shoulders, so that the staff can rely on the strength of the upper body to push the equipment to move, and the two ends of the two sets of waist belts 602 are connected by the buckles and holes of the waist belt 602, and the free end of the shoulder strap 603 is put on the surface of the waist belt 602 by relying on the Velcro. The shoulder strap 603 is passed around the staff's shoulders and connected to the waist belt 602.

[0038] In summary, when the present invention is in use, before using the equipment for troweling, the worker wears the waist belt 602 and the shoulder strap 603 to the upper body, with the connecting piece 7 located on the front side of the waist and abdomen. When working normally, the worker holds the handle 304 to push the device to move, and controls the trowel seat 1 to trowel the concrete floor. If the work intensity here is large and the work time is long, the front half of the connecting piece 7 can be inserted into the positioning groove 303 on the rear side of the positioning plate 302, and the handle 304 can be turned upward to drive the rotating rod 305 and the first bevel gear 306 to rotate. After the first bevel gear 306 and the meshing are engaged, the rotating rod 305 and the first bevel gear 306 can be turned upward. The second bevel gear 403 is driven to drive the transmission wheel 402 to rotate, and then the meshing transmission wheel 402 and the tooth plate 405 are driven to drive the tooth plate 405 to slide along the surface of the slider 404, pushing the two sets of limit clamps 5 to move towards each other until they are close to the rear half of the connecting member 7, completing the limit fixation of the connecting member 7, so that the handle 3 is connected to the connecting member 7. The staff can rely on the strength of the upper body to push the device to move, and the arms play an auxiliary direction role, thereby reducing the burden on the hands during the use of the device, extending work efficiency, and ensuring the effective implementation of the polishing operation.

[0039] The above description is merely a preferred embodiment of the present invention and does not constitute any other limitation to the present invention. Any person skilled in the art may utilize the above-disclosed technical content to modify or remodel the present invention into equivalent embodiments. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. A handheld concrete trowel device, comprising a trowel base (1) and a telescopic rod (2), characterized in that: The utility model also includes a handle (3), a transmission mechanism (4), a limiting clamp (5), a fixing belt (6) and a connecting piece (7), wherein a telescopic rod (2) is rotatably mounted on the top of the polishing seat (1), the free end of the telescopic rod (2) is rotatably connected to the handle (3), a transmission mechanism (4) is provided on the surface of the handle (3), the rotating end of the handle (3) is engaged with the rotating end of the transmission mechanism (4), the moving end of the transmission mechanism (4) is fixedly mounted with a limiting clamp (5), the front side of the fixing belt (6) is fixedly mounted with a connecting piece (7), the rear side of the handle (3) is provided with a groove corresponding to the connecting piece (7), and the limiting clamp (5) is located on both sides of the rear of the groove and is arranged corresponding to the connecting piece (7).

2. A handheld concrete trowel device according to claim 1, characterized in that: The handle (3) comprises a rotating seat (301), a positioning plate (302) and a positioning slot (303). The front end of the rotating seat (301) is rotatably mounted on the free end of the telescopic rod (2). The rear side of the rotating seat (301) is fixedly mounted with the positioning plate (302). The rear side of the positioning plate (302) is provided with a positioning slot (303).

3. A handheld concrete trowel device according to claim 2, characterized in that: The handle (3) further comprises a gripping rod (304), a rotating rod (305) and a first bevel gear (306). The gripping rods (304) are provided in two groups. The two groups of gripping rods (304) are rotatably mounted on the left and right ends of the rotating seat (301), respectively. The rotating rod (305) is fixedly mounted on one end of the gripping rod (304) close to the rotating seat (301). The rotating rod (305) passes through the surface of the rotating seat (301), and the first bevel gear (306) is fixedly mounted on the free end thereof.

4. A handheld concrete trowel device according to claim 3, characterized in that: The transmission mechanism (4) and the limiting clamping blocks (5) are provided in two groups and are symmetrically arranged with respect to the positioning plate (302). The two groups of limiting clamping blocks (5) are located on the left and right sides behind the first bevel gear (306).

5. The handheld concrete trowel device according to claim 2, characterized in that: The inner wall of the positioning groove (303) is fitted with the front half of the connecting piece (7), and the adjacent surfaces of the two sets of limiting clamps (5) are fitted with the rear half of the connecting piece (7).

6. The handheld concrete trowel device according to claim 1, characterized in that: The transmission mechanism (4) comprises a top plate (401), a transmission wheel (402), a second bevel gear (403), a slider (404) and a tooth plate (405); the top plate (401) is fixedly mounted on the top of the handle (3); a rotating shaft is rotatably mounted on the bottom of the top plate (401); a transmission wheel (402) is fixedly mounted on the surface of the rotating shaft; a second bevel gear (403) is fixedly mounted on the surface of the rotating shaft; a slider (404) is fixedly mounted on the bottom of the top plate (401); and a tooth plate (405) is slidably mounted on the surface of the slider (404).

7. The handheld concrete trowel device according to claim 1, characterized in that: The fixing belt (6) comprises a supporting plate (601), a waist belt (602) and a shoulder strap (603); a connecting piece (7) is fixedly mounted on the front side of the supporting plate (601); the waist belt (602) is fixedly connected to the left and right sides of the supporting plate (601); and the shoulder strap (603) is fixedly connected to the front side of the waist belt (602).

Images