CN111822750A - Electric hand drill with drill bit cooling function - Google Patents
Electric hand drill with drill bit cooling function Download PDFInfo
- Publication number
- CN111822750A CN111822750A CN202010145373.3A CN202010145373A CN111822750A CN 111822750 A CN111822750 A CN 111822750A CN 202010145373 A CN202010145373 A CN 202010145373A CN 111822750 A CN111822750 A CN 111822750A
- Authority
- CN
- China
- Prior art keywords
- drill
- drill bit
- fixed
- casing
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 19
- 238000005086 pumping Methods 0.000 claims abstract description 12
- 238000013016 damping Methods 0.000 claims description 14
- 229920000742 Cotton Polymers 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims 2
- 239000000110 cooling liquid Substances 0.000 description 8
- 238000005553 drilling Methods 0.000 description 8
- 239000000428 dust Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1092—Arrangements for cooling or lubricating tools or work specially adapted for portable power-driven tools
Abstract
The invention is suitable for the technical field of electric tools, and provides an electric hand drill with a drill bit cooling function, which comprises an electric drill component, wherein the electric drill component comprises a shell, a handle, a transmission shaft, a transmission gear, a driving gear, a servo motor, a switch, a water storage bin, a miniature negative pressure pump, a water pumping pipe, a water inlet pipe, a spray pipe, a drill bit sleeve and a drill bit.
Description
Technical Field
The invention belongs to the field of electric tools, and particularly relates to an electric hand drill with a drill bit cooling function.
Background
The electric hand drill is a drilling tool taking an alternating current power supply or a direct current battery as power, is one of hand-held electric tools, and mainly comprises the following components: the electric drill is an electric tool which is most frequently used by people, has the advantages of convenience, low price, convenience in carrying and the like, and is well received by workers in hardware and decoration industries.
The existing electric hand drill has certain defects when in use, and the existing electric hand drill is simple in structure and cannot cool the drill bit during drilling operation, so that the service life of the drill bit is not prolonged, and in addition, a large amount of dust can be generated during drilling, and the harm can be caused to the respiratory tract of a worker.
Disclosure of Invention
The invention provides an electric hand drill with a drill bit cooling function, and aims to solve the problems in the prior art.
The electric hand drill with the drill bit cooling function comprises an electric drill component, a stopping component and a shoulder pressing component;
the electric drill component comprises a shell, a handle, a transmission shaft, a transmission gear, a driving gear, a servo motor, a switch, a water storage bin, a miniature negative pressure pump, a water pumping pipe, a water inlet pipe, a spray pipe, a drill bit sleeve and a drill bit;
the bottom of one end of the shell is provided with the handle, the other end of the shell is provided with the transmission shaft, one end of the transmission shaft extends into the shell and is fixedly provided with the transmission gear, the shell is internally provided with the servo motor, the output end of the servo motor is fixedly provided with the driving gear, the driving gear is meshed with the transmission gear, the handle is provided with a switch, the switch is electrically connected with the servo motor, the switch is electrically connected with a power line, the other end of the transmission shaft is positioned outside the shell and is fixedly provided with a drill bit sleeve, one end of the drill bit sleeve is connected with the transmission shaft, the other end of the drill bit sleeve is provided with a mounting groove, and one end of the drill bit is embedded into the mounting groove and is fixedly connected with;
the water storage storehouse is located the casing, miniature negative pressure pump is located the top in water storage storehouse just miniature negative pressure pump's water inlet passes through the drinking-water pipe intercommunication the water storage storehouse, the spray tube is fixed the other end of casing just is located the below of drill bit, the one end intercommunication of spray tube the delivery port of miniature negative pressure pump, the other end orientation of spray tube the drill bit, the inlet tube is fixed on the casing just the one end intercommunication of inlet tube the water storage storehouse, install a control on the handle the start key of opening and closing of miniature negative pressure pump, miniature negative pressure pump passes through the power cord provides electric power source.
Preferably, the handle is provided with a handle groove, and a first non-slip mat is fixed in the handle groove.
Preferably, a second non-slip mat is fixed on the handle and made of rubber materials.
Preferably, the stopping assembly comprises a cover plate and a spring, the cover plate is located at the top of the other end of the casing, one end of the cover plate is hinged to the casing, the other end of the cover plate is located above the drill bit sleeve, one spring is arranged in the middle of the cover plate, and two ends of the spring are fixedly connected with the cover plate and the casing respectively.
Preferably, a pressure lever perpendicular to the cover plate is fixed at the top of the other end of the cover plate, and a handle is fixed at the upper end of the pressure lever.
Preferably, the shoulder pressing assembly comprises a telescopic rod, a cushion block, a sleeve and a damping spring, the sleeve is located at one end of the shell, one end of the sleeve is fixedly connected with the shell, one end of the telescopic rod extends into the other end of the sleeve and is movably connected with the sleeve, one damping spring is arranged in the sleeve, two ends of the damping spring are respectively connected with the telescopic rod and the shell, and the other end of the telescopic rod is fixed with one cushion block.
Preferably, the housing is provided with a plurality of heat dissipation holes, and the heat dissipation holes are located on one side of the servo motor.
Preferably, a sound absorption cotton is fixed to the top of the inner side of the shell and located above the servo motor.
Compared with the prior art, the invention has the beneficial effects that: according to the electric hand drill with the drill bit cooling function, the water storage bin for containing the cooling liquid is arranged in the shell, the miniature negative pressure pump for pumping the cooling liquid is arranged at the top of the water storage bin, the water outlet of the miniature negative pressure pump is connected with the spray pipe, one end of the spray pipe is positioned outside the shell and faces the drill bit, and the water storage bin is also connected with the water inlet pipe for injecting the cooling liquid, so that the cooling liquid can be sprayed out through the spray pipe while drilling operation is carried out, the drill bit is cooled, and dust is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of an electric hand drill with a drill bit cooling function according to the present invention.
Fig. 2 is a cross-sectional view of the entirety of the present invention.
Fig. 3 is an enlarged schematic view of detail a in fig. 2.
In the figure: 1-electric drill component, 11-shell, 12-handle, 13-handle groove, 14-first non-slip mat, 15-second non-slip mat, 16-transmission shaft, 17-transmission gear, 18-driving gear, 19-servo motor, 110-switch, 111-water storage bin, 112-micro negative pressure pump, 113-water pumping pipe, 114-water inlet pipe, 115-spray pipe, 116-drill head sleeve, 117-drill head, 118-sound absorbing cotton, 119-heat dissipation hole, 2-stop component, 21-cover plate, 22-spring, 23-pressure bar, 24-handle, 3-shoulder pressure component, 31-telescopic rod, 32-cushion block, 33-sleeve pipe and 34-damping spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a technical solution: an electric hand drill with a drill bit cooling function comprises an electric drill component 1, a stopping component 2 and a shoulder pressing component 3.
The electric drill assembly 1 comprises a shell 11, a handle 12, a transmission shaft 16, a transmission gear 17, a driving gear 18, a servo motor 19, a switch 110, a water storage bin 111, a micro negative pressure pump 112, a water pumping pipe 113, a water inlet pipe 114, a spray pipe 115, a drill head sleeve 116 and a drill head 117.
The bottom of one end of the shell 11 is provided with a handle 12, the other end of the shell 11 is provided with a transmission shaft 16, one end of the transmission shaft 16 extends into the shell 11 and is fixed with a transmission gear 17, a servo motor 19 is installed in the shell 11, the output end of the servo motor 19 is fixed with a driving gear 18, the driving gear 18 is meshed with the transmission gear 17, the handle 12 is provided with a switch 110, the switch 110 is electrically connected with the servo motor 19, the switch 110 is electrically connected with a power line, the other end of the transmission shaft 16 is positioned outside the shell 11 and is fixed with a drill bit sleeve 116, one end of the drill bit sleeve 116 is connected with the transmission shaft 16, the other end of the drill bit sleeve 116 is provided with a mounting groove. The handle 12 has a handle slot 13, and a first anti-slip pad 14 is fixed in the handle slot 13. A second anti-skid pad 15 is fixed on the handle 12, and the second anti-skid pad 15 is made of rubber material. The housing 11 is provided with a plurality of heat dissipation holes 119, and the heat dissipation holes 119 are located at one side of the servo motor 19. A sound absorption cotton 118 is fixed on the top of the inner side of the housing 11, and the sound absorption cotton 118 is positioned above the servo motor 19.
Wherein, still be fixed with a bearing in the casing 11, the bearing cover is established in the outside of transmission shaft 16 for transmission shaft 16 rotates more stably. The switch 110 is used for controlling the on-off and the rotating speed of the servo motor 19, the switch 110 is a three-section ship-shaped switch, three gears of the three-section ship-shaped switch are respectively a power-off power supply, a first rotating speed and a second rotating speed, the first rotating speed is lower than the second rotating speed, and a power line is used for being connected with an external power supply, so that a power source is provided for the servo motor 19. The drill bit 117 is installed in the drill bit sleeve 116 through a fixing screw, so that the drill bit is convenient to disassemble and replace. The handle slot 13 is used for holding by a user, and when the user holds the grip 12, the palm contacts the second anti-slip pad 15, and the fingers contact the first anti-slip pad 14. The heat dissipation holes 119 are used for dissipating heat generated when the servo motor 19 operates, so that the servo motor 19 operates more safely. The sound-absorbing cotton 118 is used to absorb part of the noise generated by the servo motor 19, thereby reducing noise pollution. The housing 11 and the handle 12 are hollow and are communicated with each other. The servo motor 19 drives the transmission gear 17 to rotate through the driving gear 18, so as to drive the bit housing 116 to rotate through the transmission shaft 16, and further, the drilling operation is performed through the bit 117 on the bit housing 116. In the present embodiment, a steering switch may be further mounted on the handle 12, and the steering switch is a two-stage ship-type switch for controlling the forward rotation and the reverse rotation of the servo motor 19.
The water storage bin 111 is located in the shell 11, the micro negative pressure pump 112 is located at the top of the water storage bin 111, a water inlet of the micro negative pressure pump 112 is communicated with the water storage bin 111 through a water pumping pipe 113, the spray pipe 115 is fixed at the other end of the shell 11 and located below the drill bit 117, one end of the spray pipe 115 is communicated with a water outlet of the micro negative pressure pump 112, the other end of the spray pipe 115 faces the drill bit 117, the water inlet pipe 114 is fixed on the shell 11, one end of the water inlet pipe 114 is communicated with the water storage bin 111, the handle 12 is provided with a start key for controlling the opening and closing of the micro negative pressure pump 112.
Wherein, store the coolant liquid in the reservoir 111, inlet tube 114 is used for to the input coolant liquid in the reservoir 111, and a sealed lid is installed to the one end that is located the casing 11 outside of inlet tube 114, and sealed lid passes through the screw thread and installs on inlet tube 114, and the user can be through connecting outside water pipe with inlet tube 114 in order continuously supplying water. The nozzle 115 is an L-shaped structure. The micro negative pressure pump 112 is used for pumping the cooling liquid in the water storage bin 111 through the water pumping pipe 113, and then spraying the cooling liquid to the drill 117 through the spray pipe 115 to cool the drill 117 and reduce dust.
The shutdown assembly 2 comprises a cover plate 21 and a spring 22, the cover plate 21 is positioned at the top of the other end of the casing 11, one end of the cover plate 21 is hinged with the casing 11, the other end of the cover plate 21 is positioned above the drill bit sleeve 116, the spring 22 is arranged in the middle of the cover plate 21, and two ends of the spring 22 are fixedly connected with the cover plate 21 and the casing 11 respectively. A pressing rod 23 vertical to the cover plate 21 is fixed on the top of the other end of the cover plate 21, and a handle 24 is fixed on the upper end of the pressing rod 23.
The cover plate 21 is used to manually and forcibly stop the rotation of the drill 117 when the servo motor 19 is turned off but the drill 117 continues to rotate due to inertia. A rubber anti-slip ring is fixed on the outer peripheral wall of the bit sleeve 116. The cover plate 21 is supported by the spring 22, when the servo motor 19 is powered off, the pressing rod 23 is controlled by the handle 24 to press down the cover plate 21, the cover plate 21 contacts the rubber anti-slip ring, and the drill sleeve 116 is pressed by the cover plate 21, so that the drill sleeve 116 and the drill bit 117 stop rotating, and the use is safer.
The shoulder pressing component 3 comprises an expansion link 31, a cushion block 32, a sleeve 33 and a damping spring 34, the sleeve 33 is located at one end of the shell 11, one end of the sleeve 33 is fixedly connected with the shell 11, one end of the expansion link 31 extends into the sleeve 33 from the other end of the sleeve 33 and is movably connected with the sleeve 33, the damping spring 34 is arranged in the sleeve 33, two ends of the damping spring 34 are respectively connected with the expansion link 31 and the shell 11, and the cushion block 32 is fixed at the other end of the expansion link 31.
The shoulder pressing assembly 3 is used for increasing the pressure of the drill bit 117 and improving the efficiency of the drilling operation. The pad 32 is made of a rubber material. The user can increase the pressure of the drill bit 117 by pressing the pad 32 against the shoulder, while the telescopic rod 31 retracts into the sleeve 33, compressing the damping spring 34, which damping spring 34 can provide a damping effect.
When the electric hand drill with the drill bit cooling function is used, when a user holds the handle 12, the palm of the hand contacts the second anti-slip pad 15, the finger of the hand contacts the first anti-slip pad 14, the switch 110 is turned on, the servo motor 19 is started, the micro negative pressure pump 112 is started through the start button, the servo motor 19 drives the transmission gear 17 to rotate through the driving gear 18, the transmission shaft 16 drives the drill bit sleeve 116 to rotate, and drilling operation is performed through the drill bit 117 on the drill bit sleeve 116. The micro negative pressure pump 112 is used for pumping the cooling liquid in the water storage bin 111 through the water pumping pipe 113, and then spraying the cooling liquid to the drill 117 through the spray pipe 115 to cool the drill 117 and reduce dust. In addition, the user can increase the pressure of the drill 117 by pressing the pad 32 with the shoulder, and simultaneously compress the damper spring 34, the damper spring 34 can provide a damping effect. After drilling is finished, the switch is closed, when the servo motor 19 is powered off, the pressing rod 23 is controlled by the handle 24 to press down the cover plate 21, the drill sleeve 116 is pressed through the cover plate 21, and therefore the drill sleeve 116 and the drill 117 stop rotating, and the use is safer. The invention can effectively cool the drill bit and reduce the dust suction of a user during operation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides an electric hand drill with drill bit cooling function which characterized in that: the electric drill comprises an electric drill component (1), a stopping component (2) and a shoulder pressing component (3);
the electric drill assembly (1) comprises a shell (11), a handle (12), a transmission shaft (16), a transmission gear (17), a driving gear (18), a servo motor (19), a switch (110), a water storage bin (111), a micro negative pressure pump (112), a water pumping pipe (113), a water inlet pipe (114), a spray pipe (115), a drill bit sleeve (116) and a drill bit (117);
the bottom of the one end of casing (11) has one handle (12), one is installed to the other end of casing (11) transmission shaft (16), the one end of transmission shaft (16) stretches into just be fixed with one in casing (11) drive gear (17), install one in casing (11) servo motor (19), servo motor (19)'s output is fixed with one drive gear (18), drive gear (18) meshing drive gear (17), install a switch (110) on handle (12), switch (110) electricity is connected servo motor (19), a power cord is connected to switch (110) electricity, the other end of transmission shaft (16) is located outside casing (11) and be fixed with a drill sleeve (116), the one end of drill sleeve (116) is connected transmission shaft (16), the other end of the drill bit sleeve (116) is provided with a mounting groove, and one end of the drill bit (117) is embedded into the mounting groove and fixedly connected with the drill bit (117);
the water storage bin (111) is positioned in the shell (11), the miniature negative pressure pump (112) is positioned at the top of the water storage bin (111) and the water inlet of the miniature negative pressure pump (112) is communicated with the water storage bin (111) through the water pumping pipe (113), the spray pipe (115) is fixed at the other end of the shell (11) and is positioned below the drill bit (117), one end of the spray pipe (115) is communicated with the water outlet of the miniature negative pressure pump (112), the other end of the spray pipe (115) faces the drill bit (117), the water inlet pipe (114) is fixed on the shell (11) and one end of the water inlet pipe (114) is communicated with the water storage bin (111), the handle (12) is provided with a start key for controlling the micro negative pressure pump (112) to be turned on and off, and the micro negative pressure pump (112) provides a power source through the power line.
2. An electric hand drill having a drill bit cooling function as claimed in claim 1, wherein: the handle (12) is provided with a handle groove (13), and a first anti-skid pad (14) is fixed in the handle groove (13).
3. An electric hand drill having a drill bit cooling function as claimed in claim 1, wherein: a second anti-skid pad (15) is fixed on the handle (12), and the second anti-skid pad (15) is made of rubber materials.
4. An electric hand drill having a drill bit cooling function as claimed in claim 1, wherein: shut down subassembly (2) and include apron (21) and spring (22), apron (21) are located the top of the other end of casing (11), the articulated casing (11) of one end of apron (21), the other end of apron (21) is located the top of drill point cover (116), the middle part of apron (21) is provided with one spring (22), the both ends difference fixed connection of spring (22) apron (21) with casing (11).
5. An electric hand drill having a drill bit cooling function as claimed in claim 4, wherein: a pressing rod (23) vertical to the cover plate (21) is fixed at the top of the other end of the cover plate (21), and a handle (24) is fixed at the upper end of the pressing rod (23).
6. An electric hand drill having a drill bit cooling function as claimed in claim 1, wherein: shoulder and press subassembly (3) including telescopic link (31), cushion (32), sleeve pipe (33) and damping spring (34), sleeve pipe (33) are located the one end of casing (11), the one end fixed connection of sleeve pipe (33) casing (11), the one end of telescopic link (31) is followed the other end of sleeve pipe (33) stretches into sleeve pipe (33) and swing joint sleeve pipe (33), be provided with one in sleeve pipe (33) damping spring (34), the both ends of damping spring (34) are connected respectively telescopic link (31) with casing (11), the other end of telescopic link (31) is fixed with one cushion (32).
7. An electric hand drill having a drill bit cooling function as claimed in claim 1, wherein: a plurality of heat dissipation holes (119) are formed in the shell (11), and the heat dissipation holes (119) are located on one side of the servo motor (19).
8. An electric hand drill having a drill bit cooling function as claimed in claim 1, wherein: the top of the inner side of the shell (11) is fixed with sound absorption cotton (118), and the sound absorption cotton (118) is located above the servo motor (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145373.3A CN111822750B (en) | 2020-03-05 | Electric hand drill with drill bit cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145373.3A CN111822750B (en) | 2020-03-05 | Electric hand drill with drill bit cooling function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111822750A true CN111822750A (en) | 2020-10-27 |
| CN111822750B CN111822750B (en) | 2024-05-03 |
Family
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115462252A (en) * | 2021-06-11 | 2022-12-13 | 格力博(江苏)股份有限公司 | Pruning machine |
| CN115462251A (en) * | 2021-06-11 | 2022-12-13 | 格力博(江苏)股份有限公司 | Garden tool |
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| KR101626946B1 (en) * | 2016-01-19 | 2016-06-02 | 석대환 | drill machine |
| CN205630511U (en) * | 2016-04-15 | 2016-10-12 | 张建国 | Can cool off fast and bore with dirt -proof portable electric hammer |
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| CN209206525U (en) * | 2018-10-10 | 2019-08-06 | 福建铭冠板业科技股份有限公司 | A kind of PVC wood plastic foam plate processing unit (plant) |
| WO2020018774A1 (en) * | 2018-07-18 | 2020-01-23 | Apex Brands, Inc. | Portable power drill with pump |
| CN210080789U (en) * | 2019-03-20 | 2020-02-18 | 江苏环球机械工具有限公司 | Drill bit cooling and damping device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020072610A (en) * | 2001-03-12 | 2002-09-18 | 김지형 | auto-stop system for a drill |
| KR101626946B1 (en) * | 2016-01-19 | 2016-06-02 | 석대환 | drill machine |
| CN205630511U (en) * | 2016-04-15 | 2016-10-12 | 张建国 | Can cool off fast and bore with dirt -proof portable electric hammer |
| CN206326155U (en) * | 2016-08-11 | 2017-07-14 | 诺希德实业（深圳）有限公司 | A kind of hand-held pneumatic percussive drill of the aluminium alloy casing driven with air motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115462252A (en) * | 2021-06-11 | 2022-12-13 | 格力博(江苏)股份有限公司 | Pruning machine |
| CN115462251A (en) * | 2021-06-11 | 2022-12-13 | 格力博(江苏)股份有限公司 | Garden tool |
| CN115462251B (en) * | 2021-06-11 | 2024-03-01 | 格力博(江苏)股份有限公司 | Garden tool |
| CN115462252B (en) * | 2021-06-11 | 2024-03-01 | 格力博(江苏)股份有限公司 | Pruning machine |
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