Quick-release assembly for a blade assembly of a lawn aerator

Abstract

The invention discloses a quick-install assembly of a tool assembly for a lawn aerator, the main points of which are: comprising a hanging foot fixing seat, a pressing seat and a locking device; one end of the pressing seat is rotatably connected and arranged on the hanging foot fixing seat, the pressing seat can be rotated to open or close, and when closed, the other end forms a limited fixed connection with the hanging foot fixing seat through the locking device; the left end of the tool assembly is rotatably arranged in the hanging foot fixing seat and the pressing seat, and the left end of the tool assembly is detachably arranged in the hanging foot fixing seat and the pressing seat. The quick-install assembly of the tool assembly for a lawn aerator of the invention has a simple structure and is easy to operate. The pressing seat can be opened or closed by one hand, which saves time and effort.

Description

Technical Field

[0001] The invention relates to the technical field of electric tools, in particular to a quick-install assembly of a cutter assembly of a lawn aerator. Background Art

[0002] The lawn aerator is used to improve the air permeability of the lawn, which is conducive to the growth of the lawn. There are usually two types of tool assemblies for the lawn aerator, one is a wire claw assembly for cleaning the fallen leaves and other garbage on the lawn surface, and the other is a blade assembly for loosening the soil on the lawn surface. The wire claw assembly and the blade assembly are collectively referred to as the tool assembly. When using, the corresponding tool assembly is replaced according to different requirements. The tool assembly of the existing lawn aerator usually includes a rotating shaft, a wire claw or a blade fixed on the rotating shaft, and a hanging foot arranged at one end of the rotating shaft. A bearing is arranged in the hanging foot. The tool assembly is detachably connected to the body of the lawn aerator through the hanging foot. The connection between the tool assembly and the gearbox adopts a detachable connection between the rotating shaft (that is, the knife shaft) and the power output shaft of the gearbox. When replacing, the hanging foot needs to be removed as a whole by tools to remove the tool assembly, which is time-consuming and laborious. Moreover, when disassembling, the rotating shaft and the power output shaft of the gearbox are at a certain angle, which is easy to cause damage to the gearbox. Summary of the invention

[0003] The object of the present invention is to provide a quick-install assembly which has a simple structure and can realize the replacement of the cutter assembly of a lawn aerator without tools.

[0004] The basic technical scheme for achieving the purpose of the present invention is: a quick-install assembly of a tool assembly for a lawn aerator, which has the following structural features: it includes a hanging foot fixing seat, a pressing seat and a locking device. One end of the pressing seat is rotatably connected to the hanging foot fixing seat, and the pressing seat can be rotated to open or close. When closed, the other end is connected to the hanging foot fixing seat through the locking device to form a limited fixed connection. The left end of the tool assembly is rotatably set in the hanging foot fixing seat and the pressing seat, and the left end of the tool assembly is detachably set in the hanging foot fixing seat and the pressing seat.

[0005] The technical solution based on the above basic technical solution is that the tool assembly moves horizontally to form a detachable transmission connection with the gearbox.

[0006] The technical solution based on the above-mentioned corresponding technical solutions is: it also includes a torsion spring. The pressing seat is rotatably connected to the lower side of the rear part of the hanging foot fixing seat through the corresponding positioning pin at its rear part. The torsion spring is sleeved on the positioning pin, one end of the torsion spring is arranged on the hanging foot fixing seat, and the other end is arranged on the pressing seat. When the pressing seat and the hanging foot fixing seat are in a closed state, the torsion spring is in a pressing state.

[0007] The technical solution based on the above-mentioned corresponding technical solutions is: a tool mounting groove with an opening downward is provided in the middle of the hanging foot fixing seat. The tool mounting groove includes an upper bearing seat section and an upper tool shaft section. The cross-section of the upper bearing seat section of the tool mounting groove is semicircular, and its radius is the same as the radius of the corresponding tool shaft bearing seat on the tool assembly. The axial width of the tool mounting groove is 0.5 to 1.5 cm greater than the left-right width of the tool shaft bearing seat. The cross-section of the upper tool shaft section is semicircular, and its radius is greater than the radius of the corresponding tool shaft part on the tool. The upper bearing seat section and the upper tool shaft section are coaxially arranged, and are coaxial with the power output shaft of the gearbox.

[0008] A lower tool mounting groove opening upward is provided on the right side of the middle part of the clamping seat. The lower tool mounting groove includes a lower bearing seat section and a lower tool shaft section. The cross section of the lower bearing seat section of the lower tool mounting groove is semicircular, and its radius is the same as the radius of the tool mounting groove. The axial width of the tool mounting groove is equal to the left-right width of the tool shaft bearing seat. The cross section of the lower tool shaft section is semicircular, and its radius is larger than the radius of the upper tool shaft section of the tool mounting groove. The lower bearing seat section and the lower tool shaft section are coaxially arranged. When the clamping seat and the hanging foot fixing seat are in a closed state, the upper bearing seat section of the tool mounting groove and the lower bearing seat section of the lower tool mounting groove form a tool shaft bearing seat mounting hole.

[0009] An axial limit portion is provided on the left middle part of the clamping seat. The axial limit portion is cylindrical and coaxially arranged on the left side of the lower bearing seat section of the lower tool mounting groove. The axial width of the axial limit portion is equal to the axial width of the tool mounting groove minus the left and right widths of the tool shaft bearing seat.

[0010] The technical solution based on the above-mentioned corresponding technical solutions is: the front part of the hanging foot fixing seat is provided with a mounting part protruding downward. The front part of the pressing seat is provided with a connection limit part protruding forward. The locking device includes a lock tongue and a lock tongue handle. The lock tongue is arranged on the lower side of the mounting part of the hanging foot fixing seat along the front-back sliding direction, and the lock tongue is driven to slide by the lock tongue handle. The lock tongue limits the connection limit part of the pressing seat from below, so that the pressing seat is fixedly connected to the hanging foot fixing seat in a closed state.

[0011] The technical solution based on the above-mentioned corresponding technical solutions is: the connection limit part of the clamping seat is provided with a guide arc surface facing the front and upward. The rear part of the lock tongue is provided with a guide surface facing the rear and downward. The guide arc surface of the connection limit part is in a tangent state when in contact with the guide surface of the lock tongue.

[0012] The technical solution based on the above-mentioned corresponding technical solutions is that the locking device also includes a reset spring, the lock tongue handle drives the lock tongue to move forward, and the reset spring drives the lock tongue to reset backward.

[0013] The technical solution based on the above-mentioned corresponding technical solutions is: L-shaped limit plates are symmetrically arranged on the left and right sides of the lower side of the mounting portion of the hanging foot fixing seat. A limit groove that runs through the front and back is formed between the limit plate and the mounting portion. The openings of the two limit grooves are arranged facing each other. A limit block protruding downward is arranged in the middle of the lower side of the mounting portion, and the limit block is located between the two limit plates, and its front end surface is flush with the front side surfaces of the two limit plates.

[0014] A spring groove with an opening upward is provided in the middle of the lock tongue along the front-to-back direction, and the front of the spring groove is through-through. The lock tongue is slidably arranged in the limit groove of the mounting part of the hanging foot fixing seat from its left and right sides along the front-to-back direction, and the limit block is located in the spring groove. The reset spring is arranged in the spring groove, and its front end is against the limit block and is in a compressed state. A plug-in groove is provided in the middle of the front part of the lock tongue and runs through it from top to bottom. The lock tongue handle is plugged and fixed in the plug-in groove of the lock tongue, and its left and right ends are located on the front side of the limit plate of the mounting part.

[0015] The technical solution based on the above-mentioned corresponding technical solutions is: travel limiting parts are provided on the left and right sides of the rear part of the lock tongue, and the travel limiting parts are used to limit the lock tongue forward.

[0016] The present invention has positive effects: (1) The quick-install assembly of the tool assembly for the lawn aerator of the present invention has a simple structure and is easy to operate. The pressing seat can be opened or closed with one hand, saving time and effort.

[0017] (2) The axial width of the tool mounting groove of the foot mounting base of the present invention (i.e. Figure 1 The left-right width of the cutter shaft bearing seat is 0.5 to 1.5 cm larger than the left-right width of the cutter shaft bearing seat. The cutter shaft assembly and the gearbox are installed in a horizontal insertion manner, which avoids damage to the gearbox caused by inclined insertion and greatly extends the service life of the equipment.

[0018] (3) The clamping seat of the present invention is provided with an axial limiting portion. After the upper cutter shaft assembly is installed, the axial limiting portion is located in the left part of the upper bearing seat section of the cutter mounting groove of the hanging foot fixing seat, and the cutter shaft bearing seat is located in the right part of the upper bearing seat section. The cutter shaft bearing seat is thereby limited in the axial direction by the axial limiting portion, preventing the cutter shaft bearing seat from moving to the left, thereby ensuring the reliability of the connection between the cutter assembly and the gearbox.

[0019] (4) The front part of the clamping seat of the present invention is provided with a connection limit part protruding forward, and the connection limit part is provided with a guiding arc surface facing forward and upward, and the rear part of the lock tongue of the locking device is provided with a guiding surface facing rearward and downward. The clamping seat can be pressed during the closing operation, and the lock tongue moves forward under the squeezing action of the clamping seat. When the guiding arc surface of the connection limit part of the clamping seat is separated from the guiding surface of the lock tongue of the locking device, the lock tongue moves backward to the bottom of the connection limit part of the clamping seat under the action of the reset spring, and then the connection limit part of the clamping seat is limited and fixed. It only needs to be operated with one hand, no tools are required, and the installation is quick and convenient. When opening, it only needs to pull the lock tongue handle with one hand to make the lock tongue move forward and separate from the connection limit part of the clamping seat. The operation is simple and convenient, and no tools are required.

[0020] (5) The left and right sides of the rear portion of the lock tongue of the present invention are provided with travel limit parts. When the lock tongue is pulled forward by the lock tongue handle, the travel limit parts are used to limit the forward position of the lock tongue. When the lock tongue moves forward and is completely located below the mounting portion of the hanging foot fixing seat, the lock tongue is prevented from continuing to move forward, which is beneficial to protecting the return spring, preventing it from being further compressed, and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure when the tool assembly (blade assembly) of the present invention is installed on the quick-install assembly.

[0022] Figure 2 for Figure 1 Rear view schematic diagram of .

[0023] Figure 3 for Figure 1 Schematic diagram of the left side.

[0024] Figure 4 for Figure 1 Schematic diagram of the right side.

[0025] Figure 5 for Figure 1 Schematic top view of .

[0026] Figure 6 for Figure 1 Schematic diagram from top view.

[0027] Figure 7 For Figure 1 Schematic diagram when viewed from the upper right front.

[0028] Figure 8 For Figure 1 Schematic diagram when viewed from the lower left front.

[0029] Fig. 9 For Figure 1 Schematic diagram of the structure when the quick-release assembly is opened to take out the tool assembly when viewed from the lower left front.

[0030] Fig.10 for Figure 1 AA cross-sectional view of the quick-release assembly.

[0031] Fig.11 For Figure 1 Schematic diagram of the exploded view of the locking device of the quick-release assembly when viewed from the lower left front.

[0032] Fig.12 For Figure 1 Schematic diagram of the exploded view of the locking device of the quick-release assembly when viewed from the upper left front.

[0033] Fig.13 It is a schematic diagram of the tool assembly being installed on the corresponding lawn aerator body through the quick-release assembly.

[0034] Fig.14 This is a schematic diagram of the tool assembly, quick-release assembly and gearbox installed together.

[0035] The markings in the above drawings are as follows:

[0036] Hanging foot fixing seat 1,

[0037] Tool installation groove 1-1, upper bearing seat section 1-11, upper tool shaft section 1-12,

[0038] Torsion spring slot 1-2,

[0039] Mounting part 1-3, limiting plate 1-31, limiting groove 1-32, limiting block 1-33,

[0040] Clamping seat 2, lower tool installation groove 2-1, lower bearing seat section 2-11, lower tool shaft section 2-12,

[0041] Axial limiting portion 2-2, connecting limiting portion 2-3, guiding arc surface 2-31,

[0042] Locking device 3, lock tongue 3-1, guide surface 3-11, spring groove 3-12, plug-in groove 3-13, travel limit part 3-14, lock tongue handle 3-2, return spring 3-3,

[0043] Torsion spring 4,

[0044] Body 10-1, gearbox 10-2, tool assembly 10-3, tool shaft bearing seat 10-31. DETAILED DESCRIPTION

[0045] The description of the aspects of the present invention is as follows Figure 1 The direction shown is carried out, that is, Figure 1 The up, down, left, and right directions shown are the up, down, left, and right directions described. Figure 1The direction is forward, away from Figure 1 The side that is at the rear is the one at the rear.

[0046] (Example 1)

[0047] See Figures 1 to 13 The quick-assembly assembly of the tool assembly for the lawn aerator of the present invention comprises a hanging foot fixing seat 1, a pressing seat 2 and a locking device 3.

[0048] See Figures 1 to 13 The foot fixing seat 1 is an injection-molded integral part. The foot fixing seat 1 is fixedly arranged on the lower left side of the fuselage 10-1. A tool mounting groove 1-1 with an opening facing downward is provided in the middle of the foot fixing seat 1. The tool mounting groove 1-1 includes an upper bearing seat section 1-11 and an upper tool shaft section 1-12. The cross section of the upper bearing seat section 1-11 of the tool mounting groove 1-1 is semicircular, and its radius is the same as or corresponds to the radius of the corresponding tool shaft bearing seat 10-31 on the tool assembly 10-3. The axial width (left-right width) of the tool mounting groove 1-1 is greater than the left-right width of the tool shaft bearing seat 10-31 by 0. to 1.5 cm, and in this embodiment is 0.8 cm. The cross section of the upper tool shaft section 1-12 is semicircular, and its radius is greater than the radius of the corresponding tool shaft portion on the tool 10-3. The upper bearing seat section 1-11 and the upper tool shaft section 1-12 are coaxially arranged and coaxial with the power output shaft of the gearbox 10-2.

[0049] A torsion spring slot 1-2 opening downward is provided at the rear of the hanging foot fixing seat 1 in the front-to-back direction, the front of the torsion spring slot 1-2 is connected forwardly to the upper bearing seat section 1-11 of the tool mounting slot 1-1, and the rear of the torsion spring slot 1-2 is connected backwardly.

[0050] A mounting portion 1-3 protruding downward is provided at the front of the foot-hanging fixing seat 1. L-shaped limiting plates 1-31 are symmetrically provided on the left and right sides of the lower side of the mounting portion 1-3. A limiting groove 1-32 that runs through the front and back is formed between the limiting plate 1-31 and the mounting portion 1-3. The openings of the two limiting grooves 1-32 are arranged facing each other. A limiting block 1-33 protruding downward is provided at the middle of the lower side of the mounting portion 1-3. The limiting block 1-33 is located between the two limiting plates 1-31, and its front end surface is flush with the front side surfaces of the two limiting plates 1-31.

[0051] See Figures 1 to 13 The clamping seat 2 is an injection-molded integral part. The clamping seat 2 is rotatably connected to the lower rear side of the foot-hanging seat 1 through the corresponding positioning pin. The torsion spring 4 is sleeved on the positioning pin, one end of the torsion spring 4 is located in the torsion spring slot 1-2 of the foot-hanging seat 1, and the other end is arranged on the clamping seat 2, so as to make the clamping seat 2 and the foot-hanging seat 1 in an open state (see Fig.11 ). When the clamping seat 2 and the foot-hanging fixing seat 1 are in a closed state (see Figure 2 ), the torsion spring 4 is in a compressed state.

[0052] A lower tool mounting groove 2-1 opening upward is provided on the right side of the middle part of the clamping seat 2. The lower tool mounting groove 2-1 includes a lower bearing seat section 2-11 and a lower tool shaft section 2-12. The cross-section of the lower bearing seat section 2-11 of the lower tool mounting groove 2-1 is semicircular, and its radius is the same as the radius of the tool mounting groove 1-1. The axial width (left-right width) of the tool mounting groove 1-1 is equal to the left-right width of the tool shaft bearing seat 10-31. The cross-section of the lower tool shaft section 2-12 is semicircular, and its radius is larger than the radius of the upper tool shaft section 1-12 of the tool mounting groove 1-1. The lower bearing seat section 2-11 and the lower tool shaft section 2-12 are coaxially arranged. When the clamping seat 2 and the hanging foot fixing seat 1 are in a closed state (see Figure 2 ), the upper bearing seat section 1-11 of the tool mounting groove 1-1 and the lower bearing seat section 2-11 of the lower tool mounting groove 2-1 form a tool shaft bearing seat mounting hole.

[0053] An axial limiter 2-2 is provided at the left middle part of the clamping seat 2. The axial limiter 2-2 is cylindrical and coaxially arranged on the left side of the lower bearing seat section 2-11 of the lower tool installation groove 2-1. The axial width of the axial limiter 2-2 is equal to the axial width (left-right width) of the tool installation groove 1-1 minus the left-right width of the tool shaft bearing seat 10-31. When the clamping seat 2 and the foot fixing seat 1 are in a closed state (see Figure 2 ), the axial limiting portion 2-2 of the clamping seat 2 is located in the left part of the upper bearing seat section 1-11 of the tool mounting groove 1-1, and the tool shaft bearing seat 10-31 is located in the right part of the upper bearing seat section 1-11, so that the tool shaft bearing seat 10-31 is limited in the axial direction by the axial limiting portion 2-2, restricting the tool shaft bearing seat 10-31 from moving to the left.

[0054] A connection limit portion 2-3 protruding forward is provided at the front of the pressing seat 2. The connection limit portion 2-3 is provided with a guide arc surface 2-31 facing forward and upward.

[0055] See Figures 1 to 13The locking device 3 includes a lock tongue 3-1, a lock tongue handle 3-2 and a reset spring 3-3. The lock tongue 3-1 is an injection-molded integral part, and a guide surface 3-11 facing rearward and downward is provided at the rear of the lock tongue 3-1. A spring groove 3-12 with an opening upward is provided in the middle of the lock tongue 3-1 along the front-to-back direction, and the front part of the spring groove 3-12 is passed through forward. The lock tongue 3-1 is slidably set in the limit groove 1-32 of the mounting part 1-3 of the hanging foot fixing seat 1 from its left and right sides along the front-to-back direction, and the limit block 1-33 is located in the spring groove 3-12. The reset spring 3-3 is set in the spring groove 3-12, and its front end is against the limit block 1-33 and is in a compressed state. A plug-in slot 3-13 is provided in the middle of the front part of the lock tongue 3-1, which runs through the upper and lower parts thereof. The lock tongue handle 3-2 is plugged into the plug-in slot 3-13 of the lock tongue 3-1 and is fixedly connected to the lock tongue 3-1 by screws. The left and right ends of the lock tongue handle 3-2 are located in front of the limit plate 1-31 and the limit block 1-33 of the mounting part 1-3, thereby limiting the lock tongue 3-1 backward. The lock tongue 3-1 is made to slide forward by pulling the lock tongue handle 3-2 forward. After the lock tongue handle 3-2 is released, the lock tongue 3-1 is made to slide backward by the return spring 3-3. At this time, the rear part of the lock tongue 3-1 extends backward out of the mounting part 1-3 of the hanging foot fixing seat 1, and limits and fixes the connection limit part 2-3 of the clamping seat 2, so that the clamping seat 2 and the hanging foot fixing seat 1 are in a closed state. A travel limit portion 3-14 is provided on the left and right sides of the rear portion of the lock tongue 3-1. When the lock tongue 3-1 is pulled forward by the lock tongue handle 3-2, the travel limit portion 3-14 is used to limit the lock tongue 3-1 forward. When the lock tongue 3-1 moves forward and is completely located below the mounting portion 1-3 of the hanging foot fixing seat 1, the lock tongue 3-1 is prevented from continuing to move forward, which is beneficial to protecting the reset spring 3-3, preventing it from being further compressed, and extending its service life.

[0056] When the quick-release assembly of the tool assembly of the lawn aerator of the present invention installs the tool assembly 10-3, the lock tongue 3-1 is first pulled forward by the lock tongue handle 3-2. When the lock tongue 3-1 moves forward and is completely located below the mounting portion 1-3 of the hanging foot fixing seat 1, the lock tongue 3-1 has completely disengaged from the connection limit portion 2-3 of the clamping seat 2, and the clamping seat 2 rotates and opens under the action of the torsion spring 4. The tool shaft bearing seat 10-31 at the left end of the tool assembly 10-3 is placed in the left part of the tool mounting groove 1-1 of the hanging foot fixing seat 1, and the left end of the tool assembly 10-3 is rotatably set in the tool shaft bearing seat 10-31 through the bearing, and then the tool assembly 10-3 is moved horizontally to the right, so that the square hole at the right end of the tool shaft of the tool assembly 10-3 is sleeved on the power output shaft of the gearbox 10-2, which is a corresponding square shaft, so that the tool shaft of the tool assembly 10-3 forms a detachable transmission connection with the gearbox 10-2, and at this time, the tool shaft bearing seat 10-31 at the left end of the tool assembly 10-3 is located in the right part of the tool mounting groove 1-1. Then rotate the clamping seat 2 by hand to close the clamping seat 2 and the hanging foot fixing seat 1. When the guiding arc surface 2-31 of the connection limiting part 2-3 of the clamping seat 2 is in contact with (tangent to) the guiding surface 3-11 of the lock tongue 3-1 of the locking device 3, the lock tongue 3-1 moves forward under the squeezing action of the clamping seat 2. When the guiding arc surface 2-31 of the connection limiting part 2-3 of the clamping seat 2 is disengaged from the guiding surface 3-11 of the lock tongue 3-1 of the locking device 3, the lock tongue 3-1 moves backward to the bottom of the connection limiting part 2-3 of the clamping seat 2 under the action of the reset spring 3-3, thereby limiting and fixing the connection limiting part 2-3 of the clamping seat 2, so that the clamping seat 2 and the hanging foot fixing seat 1 remain in a closed state. At this time, the axial limiting part 2-2 of the clamping seat 2 is located in the left part of the tool mounting groove 1-1, and the tool assembly 10-3 cannot move to the left, thereby ensuring the connection reliability of the tool assembly 10-3 and the gearbox 10-2. When the tool assembly 10-3 needs to be replaced, just pull the lock tongue 3-1 forward with one hand. When the lock tongue 3-1 moves forward and is completely located below the mounting portion 1-3 of the hanging foot fixing seat 1, the lock tongue 3-1 disengages from the connecting limit portion 2-3 of the clamping seat 2. The clamping seat 2 rotates open under the action of the torsion spring 4, and then the tool assembly 10-3 is moved horizontally to the left to remove the tool assembly 10-3 from the gearbox 10-2.

[0057] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the present invention. In the specific application process, corresponding modifications may be made according to the inspiration of the above embodiments. Therefore, all equivalent technical solutions should be included in the scope of patent protection of the present invention.

Claims

1. A quick-install assembly for a cutter assembly of a lawn aerator, characterized in that: It includes a hanging foot fixing seat, a clamping seat and a locking device; one end of the clamping seat is rotatably connected to the hanging foot fixing seat, and the clamping seat can be rotated to open or close, and when closed, the other end is connected to the hanging foot fixing seat through the locking device to form a limited fixed connection; the left end of the tool assembly is rotatably set in the hanging foot fixing seat and the clamping seat, and the left end of the tool assembly is detachably set in the hanging foot fixing seat and the clamping seat; the tool assembly moves horizontally to form a detachable transmission connection with the gearbox; a tool mounting groove with an opening downward is provided in the middle of the hanging foot fixing seat; the tool mounting groove includes an upper bearing seat section and an upper tool shaft section; the cross-section of the upper bearing seat section of the tool mounting groove is semicircular, and its radius is the same as the radius of the corresponding tool shaft bearing seat on the tool assembly; the axial width of the tool mounting groove is greater than the left-right width of the tool shaft bearing seat by 0.5 to 1.5 cm; the cross-section of the upper tool shaft section is semicircular, and its radius is greater than the radius of the corresponding tool shaft part on the tool; the upper bearing seat section and the upper tool shaft section are coaxially arranged, and are coaxial with the power output shaft of the gearbox; A lower tool mounting groove opening upward is provided on the right side of the middle part of the clamping seat; the lower tool mounting groove includes a lower bearing seat section and a lower tool shaft section; the cross section of the lower bearing seat section of the lower tool mounting groove is semicircular, and its radius is the same as the radius of the tool mounting groove; the axial width of the tool mounting groove is equal to the left-right width of the tool shaft bearing seat; the cross section of the lower tool shaft section is semicircular, and its radius is larger than the radius of the upper tool shaft section of the tool mounting groove; the lower bearing seat section and the lower tool shaft section are coaxially arranged; when the clamping seat and the hanging foot fixing seat are in a closed state, the upper bearing seat section of the tool mounting groove and the lower bearing seat section of the lower tool mounting groove form a tool shaft bearing seat mounting hole; An axial limit portion is provided on the left middle part of the clamping seat. The axial limit portion is cylindrical and coaxially arranged on the left side of the lower bearing seat section of the lower tool mounting groove. The axial width of the axial limit portion is equal to the axial width of the tool mounting groove minus the left and right widths of the tool shaft bearing seat.

2. The quick-install assembly of the tool assembly for the lawn aerator according to claim 1, characterized in that: It also includes a torsion spring; the clamping seat is rotatably connected to the lower side of the rear of the hanging foot fixing seat through a corresponding positioning pin at its rear; the torsion spring is sleeved on the positioning pin, one end of the torsion spring is arranged on the hanging foot fixing seat, and the other end is arranged on the clamping seat. When the clamping seat and the hanging foot fixing seat are in a closed state, the torsion spring is in a clamped state.

3. The quick-install assembly of the tool assembly for the lawn aerator according to claim 1 or 2, characterized in that: A mounting portion protruding downward is provided at the front of the hanging foot fixing seat; a connection limiting portion protruding forward is provided at the front of the pressing seat; the locking device includes a locking tongue and a locking tongue handle; the locking tongue is arranged on the lower side of the mounting portion of the hanging foot fixing seat along a forward and backward sliding direction, and the locking tongue is driven to slide by the locking tongue handle; the locking tongue limits the connection limiting portion of the pressing seat from below, thereby limiting and fixing the pressing seat to the hanging foot fixing seat, and the locking device is in a closed state.

4. The quick-install assembly of the tool assembly for the lawn aerator according to claim 3, characterized in that: The connection limit part of the clamping seat is provided with a guide arc surface facing the front and upward; the rear part of the lock tongue is provided with a guide surface facing the rear and downward; the guide arc surface of the connection limit part is in a tangent state when in contact with the guide surface of the lock tongue.

5. The quick-install assembly of the tool assembly for the lawn aerator according to claim 3, characterized in that: The locking device also includes a reset spring. The lock tongue handle drives the lock tongue to move forward, and the reset spring drives the lock tongue to move backward.

6. The quick-install assembly of the tool assembly for the lawn aerator according to claim 5, characterized in that: L-shaped limit plates are symmetrically arranged on the left and right sides of the lower side of the mounting portion of the hanging foot fixing seat; a limit groove penetrating front and back is formed between the limit plate and the mounting portion; the openings of the two limit grooves are arranged facing each other; a limit block protruding downward is arranged in the middle of the lower side of the mounting portion, and the limit block is located between the two limit plates, and its front end surface is flush with the front side surfaces of the two limit plates; A spring groove opening upward is provided in the middle of the lock tongue along the front-to-back direction, and the front part of the spring groove passes through forward; the lock tongue is slidably arranged in the limit groove of the mounting part of the hanging foot fixing seat by its left and right sides along the front-to-back direction, and the limit block is located in the spring groove; the reset spring is arranged in the spring groove, and its front end is against the limit block and is in a compressed state; a plug-in groove running through the upper and lower parts is provided in the middle of the front part of the lock tongue; the lock tongue handle is plugged and fixed in the plug-in groove of the lock tongue, and its left and right ends are located on the front side of the limit plate of the mounting part.

7. The quick-install assembly of the tool assembly for the lawn aerator according to claim 6, characterized in that: A travel limiting part is arranged on the left and right sides of the rear part of the lock tongue, and the travel limiting part is used to limit the lock tongue forward.

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