CN111972115B - Anti-winding and anti-blocking device of grass trimmer - Google Patents
Anti-winding and anti-blocking device of grass trimmer Download PDFInfo
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- CN111972115B CN111972115B CN202010705101.4A CN202010705101A CN111972115B CN 111972115 B CN111972115 B CN 111972115B CN 202010705101 A CN202010705101 A CN 202010705101A CN 111972115 B CN111972115 B CN 111972115B
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- blade
- output shaft
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- cutting
- accommodating groove
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/416—Flexible line cutters
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D75/00—Accessories for harvesters or mowers
- A01D75/18—Safety devices for parts of the machines
- A01D75/187—Removing foreign objects
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- Environmental Sciences (AREA)
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Abstract
The invention discloses an anti-winding and anti-locking device of a grass trimmer, and aims to provide the anti-winding and anti-locking device of the grass trimmer, which can effectively solve the problem that an output shaft of the grass trimmer is locked and stops rotating due to weed winding. It includes: the blade accommodating groove is formed in the top surface of the shell of the grass mowing head; the cutting edge accommodating groove is formed in the outer side face of the output shaft; the first end of the cutting blade is rotatably arranged on the inner wall of the blade accommodating groove through a shaft lever; the pre-tightening spring provides elastic force and is used for driving the cutting blade to rotate upwards around the shaft rod so as to enable the cutting edge of the cutting blade to enter the cutting edge accommodating groove; when the rotation speed of the grass cutting head is greater than the set rotation speed n1 in the working process of the grass trimmer, the cutter blade rotates downwards around the shaft rod under the action of centrifugal force; when the rotation speed of the grass cutting head is less than the set rotation speed n2, the cutter blade rotates upwards around the shaft rod under the action of the pre-tightening spring.
Description
Technical Field
The invention relates to a grass trimmer, in particular to an anti-winding and anti-blocking device of the grass trimmer.
Background
The current grass trimmer generally comprises a machine shell, a grass trimming head and a speed reducing motor arranged in the machine shell, wherein the lower end of an output shaft of the speed reducing motor extends downwards to the lower part of the machine shell, and the grass trimming head is fixed at the lower end of the output shaft. Because there is the clearance between casing and the shell of beating the grass head, this makes the machine of beating the grass in the course of the work, on some weeds can twine the output shaft between casing and the shell of beating the grass head, appear beating the grass head load increase, the rotational speed descends, causes the dead stall's of output shaft card even problem.
In order to solve the problem, the applicant filed Chinese patent publication No. CN108934473 on 7/10.2018, invented and created a grass mower with grass winding prevention mowing head, and the applicant filed the name of the grass mower with the grass winding prevention mowing head and cut off wound grass by a wound grass cutting device in the application, but the inventor found that in the actual use process, due to the fact that the rotating speed of the mowing head of the grass mower is high, the centrifugal force is large, and the cutting knife cannot push the sliding rod inwards after winding weeds under the combined action of the centrifugal force and the sliding rod return spring, the wound grass cutting device fails.
Disclosure of Invention
The invention aims to provide an anti-winding and anti-locking device of a grass trimmer, which can effectively solve the problem that an output shaft of the grass trimmer is locked and stops rotating due to weed winding.
The technical scheme of the invention is as follows:
the utility model provides a machine of beating grass antiwind card device of dying, this antiwind card device of dying is arranged in preventing the machine of beating grass work in-process, and the winding of grass leads to the dead stall of output shaft card on the output shaft of machine of beating grass, the output shaft sets up on the casing of machine of beating grass, antiwind card device of dying includes: the blade accommodating groove is formed in the top surface of the shell of the grass mowing head, and a notch of the blade accommodating groove is arranged upwards; the cutting edge accommodating groove is formed in the outer side face of the output shaft and is in a strip shape, and the length direction of the cutting edge accommodating groove is parallel to the axial direction of the output shaft; the first end of the cutting blade is rotatably arranged on the inner wall of the blade accommodating groove through a shaft rod, the first end of the cutting blade is close to the output shaft, and the shaft rod is perpendicular to the output shaft; the pre-tightening spring provides elastic force and is used for driving the cutting blade to rotate upwards around the shaft rod so as to enable the cutting edge of the cutting blade to enter the cutting edge accommodating groove; in the working process of the grass trimmer, when the rotating speed of the grass trimming head is greater than the set rotating speed n1, the cutter blade rotates downwards around the shaft rod under the action of centrifugal force, and the cutter blade is completely accommodated in the blade accommodating groove; when the rotation speed of the grass mowing head is less than the set rotation speed n2, the cutter blade rotates upwards around the shaft under the action of the pre-tightening spring, the cutting edge of the cutter blade enters the cutting edge accommodating groove, and the set rotation speed n1 is greater than the set rotation speed n 2.
Therefore, after the grass trimmer is started, if the output shaft drives the grass trimming head to work at a normal rotating speed, the cutter blade rotates downwards around the shaft rod under the action of centrifugal force, and the cutter blade is completely accommodated in the blade accommodating groove; in the grass mower working process, if weeds wind appear on the output shaft between the casing and the shell of the grass mower, the grass mower load is increased, the rotating speed is reduced, when the rotating speed of the grass mower is reduced to a set rotating speed n2, the cutter blade rotates upwards around the shaft rod under the action of the pre-tightening spring, and the cutting edge of the cutter blade enters the cutting edge accommodating groove, so that the weeds wound on the output shaft are cut off through the cutter blade, the weeds are thrown out after being cut off, the output shaft drives the grass mower to recover to normal rotating speed, and the problem that the output shaft of the grass mower is blocked to stop rotating due to the winding of the weeds is effectively solved.
Preferably, the casing is provided with an output shaft through hole, the lower end of the output shaft penetrates through the output shaft through hole and is positioned below the casing, the casing is further provided with a strip-shaped opening communicated with the output shaft through hole, the length direction of the strip-shaped opening extends along the radial direction of the output shaft, and the upper end of the cutting edge accommodating groove extends upwards into the casing; when the cutter blade rotates upwards around the shaft under the action of the pre-tightening spring, the upper end of the cutter blade penetrates through the strip-shaped opening, and when the cutting edge of the cutter blade enters the cutting edge accommodating groove, the upper end of the cutter blade extends into the shell. So, can cut off the back with the winding weeds on the output shaft near the output shaft via hole, guarantee that the output shaft can drive the head of beating the grass and resume normal rotational speed work rapidly.
Preferably, the blade of the second end of the cutting blade is provided with an impact block, and after the blade of the cutting blade enters the blade-accommodating groove, the impact block abuts against the bottom surface of the blade-accommodating groove. Therefore, the collision between the cutting edge of the cutting blade and the output shaft can be avoided.
Preferably, the bottom surface of the blade accommodating groove is provided with an elastic block, and the cutting blade abuts against the elastic block after the cutting blade rotates downwards around the shaft under the action of centrifugal force and is completely accommodated in the blade accommodating groove. Therefore, the cutter blade can be buffered through the elastic block, and the rigid impact of the cutter blade on the shell of the grass mowing head is avoided.
Preferably, the elastic block is a rubber block.
Preferably, the lower end of the output shaft is provided with a connecting screw rod, the connecting screw rod is coaxial with the output shaft, the outer diameter of the connecting screw rod is smaller than that of the output shaft, a bolt connecting hole is formed in the middle of the top surface of the housing of the grass cutting head, the connecting screw rod is in threaded connection with the bolt connecting hole, and the lower end surface of the output shaft abuts against the top surface of the housing of the grass cutting head.
Preferably, the lower end of the cutting edge accommodating groove is communicated with the lower end face of the output shaft, the lower end of the cutting edge accommodating groove is communicated with the blade accommodating groove, and after the cutting edge of the cutting blade enters the cutting edge accommodating groove, the cutting edge of the cutting blade penetrates through the lower end of the cutting edge accommodating groove. Thus, the weeds wound on the output shaft close to the grass cutting head can be cut off.
Preferably, the pre-tensioning spring is a torsion spring or a coil spring.
The invention has the beneficial effects that: after the grass trimmer is started, if the output shaft drives the grass trimming head to work at a normal rotating speed, the cutter blade rotates downwards around the shaft rod under the action of centrifugal force, and the cutter blade is completely accommodated in the blade accommodating groove; in the grass mower working process, if weeds wind appear on the output shaft between the casing and the shell of the grass mower, the grass mower load is increased, the rotating speed is reduced, when the rotating speed of the grass mower is reduced to a set rotating speed n2, the cutter blade rotates upwards around the shaft rod under the action of the pre-tightening spring, and the cutting edge of the cutter blade enters the cutting edge accommodating groove, so that the weeds wound on the output shaft are cut off through the cutter blade, the weeds are thrown out after being cut off, the output shaft drives the grass mower to recover to normal rotating speed, and the problem that the output shaft of the grass mower is blocked to stop rotating due to the winding of the weeds is effectively solved.
Drawings
FIG. 1 is a schematic view of the anti-wind and anti-seize device of the grass trimmer of the present invention.
Fig. 2 is an enlarged view of a part a of fig. 1, in which the rotation speed of the grass-mowing head of the grass-mowing machine is less than the set rotation speed n 2.
FIG. 3 is a schematic structural diagram of the anti-wind and anti-blocking device when the rotation speed of the grass cutting head of the grass trimmer of the present invention is greater than the set rotation speed n 1.
In the figure:
the device comprises a shell 1, an output shaft 1.1 and a connecting screw rod 1.2;
2, a grass cutting head;
blade holding tank 3.1, cutting blade 3.2, axostylus axostyle 3.3, pretension spring 3.4, cutting edge holding tank 3.5, bar mouth 3.6, elastic block 3.7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in figures 1 and 2, the anti-winding and anti-blocking device of the grass trimmer is used for preventing grass from winding on an output shaft of the grass trimmer to cause the output shaft to be blocked and stop rotating in the working process of the grass trimmer. Output shaft 1.1 sets up on the casing 1 of machine of beating the grass, in this embodiment, is equipped with gear motor in the casing, and the output shaft is gear motor's output shaft, and the lower extreme of output shaft is down stretched out to the casing below, and the lower extreme at the output shaft is fixed to the head of beating the grass of machine 2, and the head of beating the grass is located the below of casing.
The anti-winding clamping device comprises a blade accommodating groove 3.1, a cutting edge accommodating groove 3.5, a cutting blade 3.2 and a pre-tightening spring 3.4. The blade receiving slot 3.1 is provided on the top face of the housing of the grass-mowing head. The notch of blade holding tank sets up, and the notch of blade holding tank is towards the casing promptly. The cutting edge holding tank 3.5 sets up on the lateral surface of output shaft, specifically says so, cutting edge holding tank 3.5 sets up on the lateral surface of the output shaft between casing and the head of beating the grass. The cutting edge holding tank is the bar, and the length direction of cutting edge holding tank is parallel with the axial of output shaft. The first end of cutter piece 3.2 passes through axostylus axostyle 3.3 and rotates the setting on the inner wall of blade holding tank, and in this embodiment, the first end of cutter piece is the lower extreme of cutter piece promptly. The first end of the cutter blade is close to the output shaft. The shaft lever is vertical to the output shaft. In this embodiment, the cutting blade is in a strip shape. The cutter blade is parallel to the output shaft. The pre-tightening spring 3.4 provides elastic force for driving the cutter blade to rotate upwards around the shaft rod, so that the cutting edge of the cutter blade enters the cutting edge accommodating groove. The pretension spring is torsional spring or coil spring, and in this embodiment, the pretension spring is the torsional spring, and the torsional spring cover is established on the axostylus axostyle, and the one end of torsional spring supports on the bottom surface of holding tank, and the other end of torsional spring supports on the lug of cutter piece side.
As shown in fig. 3, when the rotation speed of the grass cutting head is greater than the set rotation speed n1 (in this embodiment, the set rotation speed n1 is 1/5 of the rated rotation speed of the grass cutting machine) during the operation of the grass cutting machine, the cutting blade rotates downwards around the shaft under the action of centrifugal force, and the cutting blade is completely accommodated in the blade accommodating groove; as shown in fig. 2, when the rotation speed of the grass cutting head is less than the set rotation speed n2 (in this embodiment, the set rotation speed n1 is 1/10 of the rated rotation speed of the grass cutter), the cutting blade rotates upward around the shaft under the action of the pre-tightening spring, and the cutting edge of the cutting blade enters the cutting edge accommodating groove. The set rotation speed n1 is greater than the set rotation speed n 2.
Therefore, after the grass trimmer is started, if the output shaft drives the grass trimming head to work at a normal rotating speed, the cutter blade rotates downwards around the shaft rod under the action of centrifugal force, and the cutter blade is completely accommodated in the blade accommodating groove; when the rotating speed of the grass mowing head is reduced to a set rotating speed n2, the cutting blade rotates upwards around the shaft rod under the action of the pre-tightening spring, and the cutting edge of the cutting blade enters the cutting edge accommodating groove, so that weeds wound on the output shaft are cut off by the cutting blade; after the weeds are cut off, the weeds are thrown out, so that the output shaft drives the grass mowing head to recover to normal rotating speed to work, and the problem that the output shaft of the grass mowing machine is blocked and stops rotating due to winding of the weeds is effectively solved; after the grass mowing head recovers to work at a normal rotating speed, the cutter blade rotates downwards around the shaft rod under the action of centrifugal force again, and the cutter blade is completely accommodated in the blade accommodating groove.
Further, as shown in fig. 2, an output shaft through hole is formed in the housing, and the lower end of the output shaft penetrates through the output shaft through hole and is located below the housing. The casing is also provided with a strip-shaped opening 3.6 communicated with the through hole of the output shaft, and the length direction of the strip-shaped opening extends along the radial direction of the output shaft. The upper end of the cutting edge accommodating groove extends upwards into the machine shell. When the cutter blade rotates upwards around the shaft under the action of the pre-tightening spring, the upper end of the cutter blade penetrates through the strip-shaped opening, and when the cutting edge of the cutter blade enters the cutting edge accommodating groove, the upper end of the cutter blade extends into the shell. So, can cut off the back with the winding weeds on the output shaft near the output shaft via hole, guarantee that the output shaft can drive the head of beating the grass and resume normal rotational speed work rapidly.
Further, as shown in fig. 2, a connecting screw rod 1.2 is arranged at the lower end of the output shaft, the connecting screw rod is coaxial with the output shaft, and the outer diameter of the connecting screw rod is smaller than that of the output shaft. The middle part of the top surface of the shell of the grass cutting head is provided with a bolt connecting hole. The connecting screw rod is connected with the bolt connecting hole through threads. The lower end surface of the output shaft is abutted against the top surface of the shell of the grass mowing head.
As shown in fig. 2 and 3, the lower end of the blade-receiving groove 3.5 is communicated with the lower end surface of the output shaft, and the lower end of the blade-receiving groove is communicated with the blade-receiving groove, so that the blade of the cutting blade passes through the lower end of the blade-receiving groove after the blade of the cutting blade enters the blade-receiving groove. Thus, the weeds wound on the output shaft close to the grass cutting head can be cut off.
Furthermore, the cutting edge of the second end of the cutting blade is provided with an impact block, in this embodiment, the second end of the cutting blade is the upper end of the cutting blade. After the cutting edge of the cutting blade enters the cutting edge accommodating groove, the impact block abuts against the bottom surface of the cutting edge accommodating groove. Therefore, the collision between the cutting edge of the cutting blade and the output shaft can be avoided.
Further, as shown in fig. 2 and 3, an elastic block 3.7 is provided on the bottom surface of the blade accommodating groove, and when the cutting blade rotates downward around the shaft under the action of centrifugal force and is completely accommodated in the blade accommodating groove, the cutting blade will abut against the elastic block. Therefore, the cutter blade can be buffered through the elastic block, and the rigid impact of the cutter blade on the shell of the grass mowing head is avoided. The elastic block is a rubber block.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a device is died to antiwind card of machine of beating grass, characterized by, this device is died to antiwind card is arranged in preventing the quick-witted working process of beating grass, and the winding of grass leads to the dead stall of output shaft card on the output shaft of machine of beating grass, the output shaft sets up on the casing of machine of beating grass, the device is died to antiwind card includes:
the blade accommodating groove is formed in the top surface of the shell of the grass mowing head, and a notch of the blade accommodating groove is arranged upwards;
the cutting edge accommodating groove is formed in the outer side face of the output shaft and is in a strip shape, and the length direction of the cutting edge accommodating groove is parallel to the axial direction of the output shaft;
the first end of the cutting blade is rotatably arranged on the inner wall of the blade accommodating groove through a shaft rod, the first end of the cutting blade is close to the output shaft, and the shaft rod is perpendicular to the output shaft; and
the pre-tightening spring provides elastic force and is used for driving the cutting blade to rotate upwards around the shaft rod so as to enable the cutting edge of the cutting blade to enter the cutting edge accommodating groove, and the pre-tightening spring is a torsion spring or a coil spring;
in the working process of the grass trimmer, when the rotating speed of the grass trimming head is greater than the set rotating speed n1, the cutter blade rotates downwards around the shaft rod under the action of centrifugal force, and the cutter blade is completely accommodated in the blade accommodating groove; when the rotation speed of the grass mowing head is less than the set rotation speed n2, the cutter blade rotates upwards around the shaft under the action of the pre-tightening spring, the cutting edge of the cutter blade enters the cutting edge accommodating groove, and the set rotation speed n1 is greater than the set rotation speed n 2.
2. The anti-winding and anti-jamming device of a grass trimmer as claimed in claim 1, wherein the housing is provided with an output shaft through hole, the lower end of the output shaft passes through the output shaft through hole and is positioned below the housing, the housing is further provided with a strip-shaped opening communicated with the output shaft through hole, the length direction of the strip-shaped opening extends along the radial direction of the output shaft, and the upper end of the blade accommodating groove extends upwards into the housing; when the cutter blade rotates upwards around the shaft under the action of the pre-tightening spring, the upper end of the cutter blade penetrates through the strip-shaped opening, and when the cutting edge of the cutter blade enters the cutting edge accommodating groove, the upper end of the cutter blade extends into the shell.
3. The anti-wind and anti-seize device of a lawn mower as claimed in claim 1, wherein said blade edge of said second end of said cutting blade is provided with an impact block, and when the blade edge of said cutting blade enters said blade edge receiving groove, said impact block abuts against the bottom surface of said blade edge receiving groove.
4. The anti-wind and anti-seize device for a lawn mower as claimed in claim 1, 2 or 3, wherein said blade receiving groove is provided at a bottom surface thereof with an elastic block against which the cutting blade abuts when the cutting blade is rotated downward around the shaft by centrifugal force and is completely received in the blade receiving groove.
5. The anti-wind and anti-seize device of a lawn mower as claimed in claim 4, wherein said elastic block is a rubber block.
6. The anti-winding and anti-blocking device of the grass trimmer as claimed in claim 1, 2 or 3, wherein the lower end of the output shaft is provided with a connecting screw rod, the connecting screw rod is coaxial with the output shaft, the outer diameter of the connecting screw rod is smaller than that of the output shaft, the middle part of the top surface of the shell of the grass trimmer head is provided with a bolt connecting hole, the connecting screw rod is in threaded connection with the bolt connecting hole, and the lower end surface of the output shaft abuts against the top surface of the shell of the grass trimmer head.
7. The anti-wind and anti-seize device of a lawn mower as claimed in claim 6, wherein the lower end of said blade-receiving groove is in communication with the lower end surface of the output shaft, and the lower end of the blade-receiving groove is in communication with the blade-receiving groove, such that the blade of the cutter blade passes through the lower end of the blade-receiving groove after the blade of the cutter blade enters the blade-receiving groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705101.4A CN111972115B (en) | 2020-07-21 | 2020-07-21 | Anti-winding and anti-blocking device of grass trimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705101.4A CN111972115B (en) | 2020-07-21 | 2020-07-21 | Anti-winding and anti-blocking device of grass trimmer |
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| Publication Number | Publication Date |
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| CN111972115A CN111972115A (en) | 2020-11-24 |
| CN111972115B true CN111972115B (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010705101.4A Active CN111972115B (en) | 2020-07-21 | 2020-07-21 | Anti-winding and anti-blocking device of grass trimmer |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140080060A (en) * | 2012-12-20 | 2014-06-30 | 이광 | Cover for reaper |
| CN204377423U (en) * | 2014-11-14 | 2015-06-10 | 刘昀 | Brush saw cutter and apply the brush saw of this cutter |
| CN204796202U (en) * | 2015-06-26 | 2015-11-25 | 刘大刚 | Effectively prevent winding lawn mower of weeds |
| CN109451973A (en) * | 2018-11-23 | 2019-03-12 | 南县伟业机械制造有限公司 | A kind of light hand underwater cutter |
| CN209749062U (en) * | 2019-01-31 | 2019-12-10 | 辽宁省农业机械化研究所 | Weed anti-winding device and rotary cultivator |
| CN111183783B (en) * | 2020-03-04 | 2021-07-09 | 青岛理工大学 | Grass winding prevention mowing mechanism and mower |
| CN212993079U (en) * | 2020-07-21 | 2021-04-20 | 浙江中力工具制造有限公司 | Anti-winding and clamping device of grass trimmer |
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Denomination of invention: Anti winding and jamming device of grass mower Effective date of registration: 20221031 Granted publication date: 20210817 Pledgee: Lishui Jinyun Sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG ZHONGLI TOOLS MANUFACTURE Co.,Ltd. Registration number: Y2022980020218 |