Convenient and fast clamp for rapidly replacing blade of mowing machine

Abstract

The utility model relates to the technical field of mowing machine blade replacement, in particular to a mowing machine blade rapid replacement convenient clamp which comprises a blade replacement box and a driving mechanism, the driving mechanism is installed on the bottom side of the right end of the blade replacement box and comprises a driving assembly and a driving shaft, the driving assembly is installed on the right side of the bottom end of the blade replacement box, and the driving shaft is installed on the driving assembly. A driving shaft is installed at the top end of the driving assembly, the center of the driving shaft is provided with the right end of a chain wheel set, a replacing mechanism is installed at the left end of the interior of a cutter replacing box, a nut is fixedly arranged at the bottom end of the replacing mechanism in a threaded mode, and rotation can be conducted at rated power through an arranged battery so that a blade can be stably fastened to the mower; abnormal vibration of the mower during working caused by unstable installation of the blade is effectively prevented, so that mowing quality is improved, the service life of the mower is prolonged, storage treatment can be carried out through the nut placed in the cutter changing box, and the situation that the overall operation progress is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower blade replacement technology, specifically a convenient clamp for quick replacement of lawnmower blades. Background Technology

[0002] In garden maintenance and lawn mowing, lawnmowers are indispensable tools. With the diversification of usage scenarios and the increase in work intensity, the frequency of lawnmower blade replacement has also increased accordingly. The traditional method of installing lawnmower blades usually relies on the tightening of bolts and nuts. When changing blades, operators need to use tools such as wrenches to laboriously unscrew the nuts on the old blades, remove the worn or damaged blades, align the new blades with the installation position, and tighten the nuts to ensure that the blades are firmly fixed.

[0003] For example, CN214852845U discloses a replaceable lawnmower blade, specifically relating to the field of lawnmower technology. It includes a protective housing, a drive motor, and a blade. The blade is installed on the bottom inner side of the protective housing. The drive motor is installed on the top of the protective housing above the center of the blade. The rotor of the drive motor is vertically and coaxially connected to a rotating shaft. A rod is provided at the bottom of the rotating shaft, and a positioning component is sleeved on the outside of the rod. A insertion hole is provided in the middle of the blade corresponding to the external position of the rod. Two positioning holes are symmetrically arranged on both sides of the insertion hole. A removable base is provided at the bottom of the blade, and a support rod is fixedly connected between the bottom end of the removable base and the bottom inner wall of the protective housing. This invention provides a more stable force distribution on the blade during use, improving its rotational stability and facilitating blade installation and removal. It also allows for quick replacement of damaged blades. However, with the development of technology, various models of lawnmowers are available, each with different types of blade fixing nuts. Simple tools such as wrenches cannot meet the replacement needs. Furthermore, the lawnmower's working environment is complex, and grass clippings, dirt, and other debris easily adhere to the threads of nuts and bolts, causing corrosion and jamming over time, greatly increasing the difficulty of disassembly. Therefore, there is an urgent need to design a convenient clamp for quick replacement of lawnmower blades to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a convenient clamp for quick replacement of lawnmower blades, in order to solve the problems mentioned in the background art, which are that with the development of technology, there are all kinds of lawnmowers available, and the blade fixing nuts are of different types. A single wrench or other tools cannot meet the replacement needs. Moreover, the lawnmower working environment is complex, and grass clippings, dirt and other debris are easy to adhere to the threads of nuts and bolts. Over time, this causes the threads to rust and get stuck, which greatly increases the difficulty of disassembly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a convenient clamp for quick replacement of lawnmower blades, comprising a blade changer box and a drive mechanism. The drive mechanism is installed on the bottom right side of the blade changer box. The drive mechanism includes a drive assembly and a drive shaft. The drive assembly is installed on the bottom right side of the blade changer box. The drive shaft is installed on the top of the drive assembly. The right end of a sprocket assembly is installed at the center of the drive shaft. A replacement mechanism is installed on the left side inside the blade changer box. The left end of the sprocket assembly drives the replacement mechanism to rotate. A nut is threadedly fixed to the bottom end of the replacement mechanism.

[0006] Preferably, the top of the tool changer box has an inner groove, and the center of the inner groove has three sets of through holes horizontally. The top of the tool changer box is fixed with an outer cover.

[0007] Preferably, the bottom edge of the outer cover is welded and fixed to the top side of the tool changer box, and a square groove is formed in the center of the outer cover.

[0008] Preferably, the drive assembly includes a battery box and a servo motor. The servo motor is installed inside the battery box and drives the drive shaft at the top to rotate. A replaceable battery is installed at the bottom of the servo motor.

[0009] Preferably, the replacement mechanism includes a fixed bearing and a transmission rod. The fixed bearing is fixed at the left end of the inner groove, the top end of the fixed bearing is connected to the left end of the sprocket assembly, the transmission rod is inserted into the center of the fixed bearing, and the bottom end of the transmission rod is fixed with a bolt thread nut.

[0010] Preferably, an inner circular groove is formed inward at the center of the bottom end of the transmission rod, and a limiting circular hole is provided transversely through the bottom end of the transmission rod.

[0011] Preferably, the quick-change convenient clamp for lawnmower blades as described in the claim is characterized in that: the top of the nut has a through hole in the horizontal direction; when the top of the nut is inserted into the inner groove at the bottom of the transmission rod, the limiting hole is horizontally parallel to the through hole; and the three sets of nuts with different models are placed inside the blade changing box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This is a convenient quick-change blade clamp for lawnmowers. A servo motor mounted on the right end of the blade changer box drives the top drive shaft to rotate, which in turn drives the blade changing mechanism via a sprocket set. This saves physical effort and improves the efficiency of blade changing. The built-in battery provides rated power for rotation, ensuring the blades are securely fastened to the lawnmower. This effectively prevents abnormal vibrations caused by unstable blade installation, thus improving mowing quality and extending the machine's lifespan.

[0014] This is a convenient quick-change clamp for lawnmower blades. The inner circular groove and limiting circular hole at the bottom of the transmission rod in the replacement mechanism allow for the fitting of a nut, which is then fixed with bolts. The simple connection allows for quick replacement of different nut models, making it suitable for various lawnmower models and improving the applicability of the device. The nuts placed inside the blade changing box can be stored to avoid affecting the overall work progress and increasing labor and time costs. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the present utility model;

[0016] Figure 2 This is a top view of the internal structure of the tool changer box of this utility model;

[0017] Figure 3 This is a side sectional view of the drive mechanism of this utility model;

[0018] Figure 4 This is a front sectional view of the replacement mechanism of this utility model.

[0019] In the diagram: 1. Tool changer box; 10. Inner groove; 101. Through hole; 11. Outer cover; 111. Square slot; 2. Drive mechanism; 21. Drive assembly; 211. Battery box; 212. Servo motor; 213. Battery; 22. Drive shaft; 3. Sprocket assembly; 4. Replacement mechanism; 41. Fixed bearing; 42. Transmission rod; 421. Inner circular groove; 422. Limiting circular hole; 43. Bolt; 5. Nut; 51. Through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 One embodiment provided by this utility model:

[0022] A convenient clamp for quick blade replacement of lawnmowers is disclosed. The servo motor 212, nut 43, and battery 213 used in this application are commercially available products. Their principles and connection methods are existing technologies well known to those skilled in the art. The clamp includes a blade changing box 1 and a drive mechanism 2. The drive mechanism 2 is installed on the bottom right side of the blade changing box 1. The drive mechanism 2 includes a drive assembly 21 and a drive shaft 22. The drive assembly 21 is installed on the bottom right side of the blade changing box 1. The drive shaft 22 is installed on the top of the drive assembly 21. The right end of the sprocket assembly 3 is installed at the center of the drive shaft 22. The replacement mechanism 4 is installed on the left side inside the blade changing box 1. The left end of the sprocket assembly 3 drives the replacement mechanism 4 to rotate. The bottom end of the replacement mechanism 4 is threaded with a nut 5.

[0023] As a further feature of this invention, the top of the tool changer box 1 has an inner groove 10, and the center of the inner groove 10 has three sets of through openings 101. The top of the tool changer box 1 is fixedly fitted with an outer cover 111, and the bottom edge of the outer cover 11 is welded and fixed to the top side of the tool changer box 1. The center of the outer cover 11 has a square groove 11, which is beneficial for storing the nuts, thereby avoiding affecting the overall work progress and increasing labor and time costs.

[0024] Furthermore, the drive assembly 21 includes a battery box 211 and a servo motor 212. The servo motor 212 is installed inside the battery box 211. The servo motor 212 drives the drive shaft 22 at the top to rotate. A replaceable battery 213 is installed at the bottom of the servo motor 212, which improves the efficiency of use and facilitates the quick disassembly of screws.

[0025] As a further improvement of this utility model, the replacement mechanism 4 includes a fixed bearing 41 and a transmission rod 42. The fixed bearing 41 is fixed to the left end of the inner groove 10. The top end of the fixed bearing 41 is connected to the left end of the sprocket assembly 3. The transmission rod 42 is inserted into the center of the fixed bearing 41. The bottom end of the transmission rod 42 is fixed with a bolt 43 threaded to the nut 5. An inner circular groove 421 is opened inward from the center of the bottom end of the transmission rod 42. A limiting circular hole 422 is provided horizontally through the bottom end of the transmission rod 42. A through circular hole 51 is opened horizontally at the top end of the nut 5. When the top end of the nut 5 is inserted into the inner circular groove 421 at the bottom end of the transmission rod 42, the limiting circular hole 422 and the through circular hole 51 are horizontally parallel. The three sets of nuts 5 inside the blade changing box 1 are of different models, which is beneficial for quickly replacing different models of nuts, so as to facilitate the use of different models of lawnmowers and improve the applicability of this device.

[0026] Working principle: When using the tool, the user first confirms the bolt for which the blade needs to be replaced, then removes the corresponding nut 5 from the top of the tool changer box 1. The top of the nut 5 is then inserted into the inner groove 421 at the bottom of the transmission rod 42. The through hole 51 at the top of the nut 5 is aligned with the limiting hole 422 on the transmission rod 42, and then secured with bolt 43. The nut 5 is then placed on the screw, and the tool changer box 1 is turned. When the nut cannot be turned, the servo motor 213 is started by powering on the battery 213, driving the drive shaft 22 at the top to rotate. As the drive shaft 22 rotates within the inner groove 10, it drives the transmission rod 42 on the left side to rotate within the fixed bearing 41 via the connected sprocket assembly 3. The rotation of the transmission rod 42 causes the nut 5 to rotate, loosening and removing the screw. After replacing the blade, the servo motor 212 is driven in reverse. This is the complete working principle of this utility model.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A convenient clamp for quick blade replacement of a lawnmower, comprising a blade changer box (1) and a drive mechanism (2), characterized in that: A drive mechanism (2) is installed on the bottom right side of the tool changer box (1). The drive mechanism (2) includes a drive assembly (21) and a drive shaft (22). The drive assembly (21) is installed on the bottom right side of the tool changer box (1). The drive shaft (22) is installed on the top of the drive assembly (21). The right end of the sprocket assembly (3) is installed at the center of the drive shaft (22). A replacement mechanism (4) is installed on the left side inside the tool changer box (1). The left end of the sprocket assembly (3) drives the replacement mechanism (4) to rotate. A nut (5) is threadedly fixed to the bottom end of the replacement mechanism (4).

2. The quick-change blade clamp for lawnmowers according to claim 1, characterized in that: The tool changer box (1) has an inner groove (10) inside its top end, and three sets of through holes (101) are opened horizontally in the center of the inner groove (10). An outer cover (11) is fixed to the top end of the tool changer box (1).

3. A convenient clamp for quick-change of lawnmower blades according to claim 2, characterized in that: The bottom edge of the outer cover (11) is welded and fixed to the top side of the tool changer box (1), and a square groove (111) is provided in the center of the outer cover (11).

4. A convenient clamp for quick-change of lawnmower blades according to claim 1, characterized in that: The drive assembly (21) includes a battery box (211) and a servo motor (212). The servo motor (212) is installed inside the battery box (211). The servo motor (212) drives the drive shaft (22) at the top to rotate. A replaceable battery (213) is installed at the bottom of the servo motor (212).

5. A convenient clamp for quick-change of lawnmower blades according to claim 1, characterized in that: The replacement mechanism (4) includes a fixed bearing (41) and a transmission rod (42). The fixed bearing (41) is fixed at the left end of the inner groove (10). The top end of the fixed bearing (41) is connected to the left end of the sprocket assembly (3). The transmission rod (42) is inserted into the center of the fixed bearing (41). The bottom end of the transmission rod (42) is fixed with a bolt (43) threaded nut (5).

6. A convenient clamp for quick-change of lawnmower blades according to claim 5, characterized in that: The transmission rod (42) has an inner circular groove (421) at the center of its bottom end, and a limiting circular hole (422) is provided through the bottom end of the transmission rod (42) laterally.

7. A convenient clamp for quick-change of lawnmower blades according to claim 1, characterized in that: The top of the nut (5) has a through hole (51) on the horizontal side. When the top of the nut (5) is inserted into the inner groove (421) at the bottom of the transmission rod (42), the limiting hole (422) is horizontally parallel to the through hole (51). The three sets of nuts (5) placed inside the tool changer box (1) are of different models.

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