CN212463923U - Weeding device - Google Patents

Abstract

The utility model relates to a weed extractor, belonging to the technical field of landscaping maintenance; comprises two clamping rods and a clamping end which are hinged with each other; the clamping end comprises a first clamping end and a second clamping end; the first clamping end and the second clamping end are respectively arranged on one side of the two clamping rods in the same direction; when the two clamping rods are closed, one side of the first clamping end head opposite to one side of the second clamping end head abuts against the other side of the second clamping end head. The utility model has the advantages of weeding more conveniently.

Description

Weeding device

Technical Field

The utility model belongs to the technical field of afforestation maintenance technique and specifically relates to a extirpator is related to.

Background

At present, in the grass landscaping process, weeds often grow around plants, the weeds compete for water and nutrients with garden vegetation, the growth of the plants is affected, the tidiness of the garden process is damaged, and the weeds need to be pulled out.

The prior Chinese utility model with the publication number of CN204031803U discloses a weed extractor, the main body of which is a clamp structure, the middle parts of two clamp handles are hinged, the tail end of one end of each clamp handle is a handheld jaw, and the shape of a clamp rod at the other end of each clamp handle is a cylinder and a concave surface body which is matched with the cylinder. The utility model discloses the two pincers shapes that will pull out the grass ware design respectively for the cylinder and with the concave surface body that the cylinder suited not only does benefit to centre gripping weeds, can avoid again with weeds pinches off, can realize linking the root and pull out.

The above prior art solutions have the following drawbacks: when the weed pulling device is used for pulling weeds, workers need to squat on the ground, clamp the stems of the weeds by using the two clamp handles, roll and pull the stems upwards to remove the weeds, but some flowers with thorns, such as roses, Chinese roses and the like, are usually planted in a garden process; some ornamental shrubs such as berberis thunbergii and the like are planted, and when weeds grow close to the flowers or the shrubs and workers use the weed extractors to remove the weeds, the weeds are easily scratched by the branches of the plants during squatting operation; in addition, the double pincers of the weed extractor are in the shape of a cylinder and concave bodies matched with the cylinder, the periphery of the cylinder is matched with the concave bodies to clamp weeds, when some weeds with lower height are extracted, in order to enable the two double pincers to clamp stems and leaves of the weeds as much as possible, the pincers openings need to be close to the ground as much as possible, and the operation is not convenient; in conclusion, the weed extractor has certain inconvenience in weeding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a weed extractor which has the advantage of weeding more conveniently.

The above object of the present invention is achieved by the following technical solutions:

a extirpator, its characterized in that: comprises two clamping rods and a clamping end which are hinged with each other; the clamping end comprises a first clamping end and a second clamping end; the first clamping end and the second clamping end are respectively arranged on one side of the two clamping rods in the same direction; when the two clamping rods are closed, one side of the first clamping end head opposite to one side of the second clamping end head abuts against the other side of the second clamping end head.

By adopting the technical scheme, when removing weeds, a worker holds the two clamping rods by hands to apply force to two sides to open the two clamping rods, the first clamping end and the second clamping end are opened at the moment to enable the weeds to be positioned between the first clamping end and the second clamping end, the two clamping rods are relatively rotated, the first clamping end and the second clamping end are closed to clamp the weeds, and then the first clamping end and the second clamping end are pulled upwards to pull out the weeds with roots; when weeds are pulled out, workers do not need to squat down to operate, so that the risk of being scratched by plant branches is reduced, and the weeds are pulled out more conveniently.

The present invention may be further configured in a preferred embodiment as: a plurality of arc-shaped bulges are convexly arranged on one surface of the first clamping end head, which is opposite to the second clamping end head; the bulges extend along the length direction of the first clamping end head, and the surfaces of the first clamping end head and the second clamping end head which are opposite to each other are fully distributed with the bulges; a plurality of grooves matched with the bulges on the first clamping head are formed in one surface, opposite to the first clamping head, of the second clamping head; when the first clamping end and the second clamping end are mutually attached, the bulge on the first clamping end is mutually embedded with the groove on the second clamping end.

Through adopting above-mentioned technical scheme, when first centre gripping end and second centre gripping end were closed, the recess gomphosis of the arch on the first centre gripping end and second centre gripping end presss from both sides the grass in gomphosis department, prevents to pull out the in-process weeds of moving and breaks away from, simultaneously, reduces the possibility that weeds were pulled off at the in-process of moving.

The present invention may be further configured in a preferred embodiment as: a row of sharp nails are respectively arranged at the bottom ends of the first clamping end head and the second clamping end head; hook-shaped hooks are convexly arranged on the side walls of the sharp nails, and the hooks on the two rows of sharp nails are oppositely arranged; when the first clamping end and the second clamping end are mutually attached, the opposite hook claws on the two rows of pointed nails are mutually close.

Through adopting above-mentioned technical scheme, when the gardens crust is comparatively dry or weeds are pricked the root comparatively firmly, pulling weeds this moment and breaking from the rhizome easily, open certain angle with first centre gripping end and second centre gripping end this moment, then make the point nail support on ground, prick the point nail into underground, then closed first centre gripping end and second centre gripping end, ruderal stem leaf is pressed from both sides, between first centre gripping end and the second centre gripping end, collude the claw card on the point nail lateral wall at ruderal root, then upwards pull out, extract weeds with the root. The weeds can be pulled out more conveniently.

The present invention may be further configured in a preferred embodiment as: a square foot pedal is arranged on the clamping end.

Through adopting above-mentioned technical scheme, through stepping on the running-board downwards, make things convenient for the point to be pinned into underground.

The present invention may be further configured in a preferred embodiment as: the clamping rods comprise straight rods and inclined rods; the inclined rod is arranged at one end of the straight rod, and an included angle between the inclined rod and the straight rod is an obtuse angle; when two supporting rods abut tightly, the straight rods on the two supporting rods are parallel to each other, the inclined rods on the two supporting rods are intersected, and the hinged point is located at the intersection point of the inclined rods on the two supporting rods.

Through adopting above-mentioned technical scheme, the pin joint is established in the down tube crossing department, can reduce the supporting rod when closed, the angle between two supporting rods to reduce the shared space of supporting rod, conveniently accomodate it.

The present invention may be further configured in a preferred embodiment as: a tension spring is arranged on the straight rod of the two clamping rods and close to the inclined rod; two ends of the tension spring are respectively fixedly connected with the straight rods on the two clamping rods; the extension spring is in tensile state all the time.

Through adopting above-mentioned technical scheme, when not using, two supporting rods are in closed state all the time to be convenient for accomodate it.

The present invention may be further configured in a preferred embodiment as: the straight rod comprises a sleeve and an inner rod; the sleeve is of a hollow tubular structure, and one end of the sleeve is provided with an opening; the inclined rod is arranged at one closed end of the sleeve; the inner rod is inserted in the sleeve and is in sliding fit with the sleeve; a locking piece for limiting the relative sliding of the sleeve and the inner rod is arranged on the outer side of one end of the opening of the sleeve; the locking piece is fixedly connected with the opening of the sleeve; the inner rod penetrates through the locking piece and is inserted into the sleeve.

Through adopting above-mentioned technical scheme, through sleeve pipe and interior pole, can change the length of straight pole to change the length of centre gripping pole, make its staff that can be applicable to different heights, make it have more extensive application scope.

The present invention may be further configured in a preferred embodiment as: the locking piece comprises a sleeve and a rotary handle sleeve; the sleeve comprises a threaded sleeve, a connecting sleeve and a clamping barrel; the threaded sleeve is a hollow cylindrical structure with openings at two ends, and is fixedly connected with one end of the sleeve with the opening; the periphery of the threaded sleeve is provided with threads; the connecting sleeve is a hollow cylindrical structure with openings at two ends, and the inner diameter of the connecting sleeve is equal to that of the threaded sleeve; the connecting sleeve is coaxially arranged at one end of the threaded sleeve, which is far away from the sleeve opening; the clamping cylinder is of a hollow round table cylindrical structure with openings at two ends, and the inner diameter of the clamping cylinder is equal to that of the connecting sleeve; the outer diameter of the small end of the clamping cylinder is equal to that of the connecting sleeve, the clamping cylinder is coaxially arranged at one end of the connecting sleeve, which is far away from the threaded sleeve, and the small end of the clamping cylinder corresponds to one end of the connecting sleeve, which is far away from the threaded sleeve; a plurality of notch grooves penetrating through the outer wall of the clamping cylinder are formed in the clamping cylinder; the notch groove extends to the connecting sleeve from the opening at the large end of the clamping cylinder along the bus direction of the clamping cylinder; the rotating handle sleeve is matched with the sleeve and sleeved on the sleeve, and the inner circumferential surface of the rotating handle sleeve corresponding to the threaded sleeve is provided with threads.

By adopting the technical scheme, when the height of a worker is high, the rotary handle sleeve can be unscrewed, one end of the clamping cylinder provided with the notch groove is loose, the wrapping force of the clamping cylinder on the inner rod is loose, the inner rod can slide in the sleeve, when the inner rod slides outwards to a certain distance, the rotary handle sleeve is screwed down, one end of the clamping cylinder provided with the notch groove is clamped, so that the inner rod is kept stable on the sleeve, and the length of the clamping rod is prolonged, so that the rotary handle sleeve is convenient for the high-height person to use; otherwise, the rotating handle sleeve is unscrewed, the inner rod slides to the inside of the sleeve to a certain distance, and then the rotating handle sleeve is screwed down, so that the inner rod is kept stable on the sleeve, the length of the clamping rod is shortened at the moment, and the operation of a person with a lower height is facilitated.

To sum up, the utility model discloses a following at least one useful technological effect:

1. by arranging a clamping rod and a clamping end head; the worker does not need to squat down to pull out the grass, so that the grass pulling is more convenient;

2. the spike nails are arranged, so that the weed pulling efficiency of the weed pulling device is improved;

3. through setting up sleeve pipe, interior pole and retaining member, improve the suitability of extirpator.

Drawings

FIG. 1 is a schematic view of a weed extractor;

FIG. 2 is a schematic view showing a structure in which a hinge shaft is engaged with a diagonal member;

FIG. 3 is a schematic view of the construction of the sleeve in the retaining member;

FIG. 4 is a cross-sectional view showing the engagement of the retaining member with the sleeve and the inner rod.

In the figure, 1, a clamping rod; 10. a straight rod; 100. a sleeve; 1000. a limiting clamping edge; 101. an inner rod; 1010. a limit snap ring; 11. a diagonal bar; 12. a hinge hole; 13. a handle; 14. a tension spring; 2. clamping the end head; 20. a first clamping head; 200. a protrusion; 21. a second clamping head; 210. a groove; 3. hinging a shaft; 30. a shaft lever; 300. a limiting ring; 301. a threaded portion; 31. a limit nut; 4. a sharp nail; 40. hooking claws; 5. a foot pedal; 6. a locking member; 60. a sleeve; 600. a threaded sleeve; 601. a connecting sleeve; 602. a clamping cylinder; 6020. a notch groove; 61. the handle sleeve is rotated.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the grass puller disclosed by the utility model comprises two clamping rods 1 and a clamping end 2 which are hinged with each other; the clamping rod 1 comprises a straight rod 10 and an inclined rod 11; the diagonal rod 11 is arranged at one end of the straight rod 10 and forms an obtuse angle with the straight rod 10; the diagonal rod 11 and the straight rod 10 are integrally formed; an annular handle 13 is arranged at one end of the straight rod 10, which is far away from the inclined rod 11; a tension spring 14 is arranged on the straight rod 10 of the two clamping rods 1 near the inclined rod 11; two ends of the tension spring 14 are respectively fixedly connected with the straight rods 10 of the two clamping rods 1; the tension spring 14 is always in a tension state; two supporting rod 1 set up relatively, and straight-bar 10 on two supporting rod 1 is parallel to each other, and the crossing and the pin joint of down tube 11 is located two supporting rod 1 on the down tube 11 department of nodical.

Referring to fig. 2, a hinge hole 12 is formed at the intersection point of the inclined rods 11 on the two clamping rods 1; the hinge hole 12 penetrates through the two inclined rods 11; a hinge shaft 3 is arranged in the hinge hole 12; the articulated shaft 3 comprises a shaft rod 30 and a limit nut 31; the shaft rod 30 is arranged in the hinge hole 12 in a penetrating way, and two ends of the shaft rod are positioned outside the hinge hole 12; the shaft rod 30 is in running fit with the hinge hole 12; one end of the shaft 30 extends radially outward to form a stop collar 300; a threaded part 301 is arranged at one end of the shaft rod 30, which is far away from the limiting ring 300; the diameter of the thread part 301 is smaller than that of the shaft 30 and is arranged coaxially with the shaft 30; the thread part 301 is integrally cast and molded with the shaft rod 30; the limiting nut 31 is in threaded connection with the threaded part 301, and the outer diameter of the limiting nut is larger than the diameter of the hinge hole 12; the stopper ring 300 cooperates with the stopper nut 31 to restrict the position of the hinge shaft 3 within the hinge hole 12.

Referring to fig. 1, the grip head 2 includes a first grip head 20 and a second grip head 21; the first clamping end 20 and the second clamping end 21 are respectively fixed at one ends of the inclined rods 11 on the two clamping rods 1, which are far away from the straight rod 10; the first clamping end 20 and the second clamping end 21 are oppositely arranged; a plurality of arc-shaped bulges 200 are convexly arranged on one surface of the first clamping end 20 opposite to the second clamping end 21; the protrusions 200 extend along the length direction of the first clamping end 20, and a plurality of protrusions 200 are fully distributed on the surface of the first clamping end 20 opposite to the second clamping end 21; a plurality of grooves 210 matched with the bulges 200 on the first clamping end head 20 are arranged on one surface, opposite to the first clamping end head 20, of the second clamping end head 21; when the first and second clamping heads 20 and 21 are engaged with each other, the protrusion 200 of the first clamping head 20 is engaged with the groove 210 of the second clamping head 21.

Referring to fig. 1; a row of sharp nails 4 are respectively arranged at the bottom ends of the first clamping end head 20 and the second clamping end head 21; a plurality of threaded holes are formed in the bottoms of the first clamping end 20 and the second clamping end 21; the top of the sharp nail 4 is provided with threads, and the sharp nail 4 is in threaded connection with a first clamping end head 20 and a second clamping end head 21; the side wall of the sharp nail 4 is convexly provided with a hook claw 40, and an included angle between the hook claw 40 and the sharp nail 40 is an acute angle; the hook claws 40 on the two rows of sharp nails 4 are oppositely arranged; when the first clamping end 20 and the second clamping end 21 are mutually attached, the oppositely arranged hooks 40 on the two rows of the pointed nails 4 are mutually close; a square foot board 5 is arranged on the first clamping end 20, and the board surface of the foot board 5 and the first clamping end 20 form an included angle of 90 degrees.

The implementation principle of the embodiment is as follows: when a worker pulls out weeds, the worker holds the handles 13 on the two clamping rods 1 by hands to apply force to two sides to open the two clamping rods 1, at the moment, the first clamping end 20 and the second clamping end 21 are opened, the tension spring 14 is stretched to enable the weeds to be located between the first clamping end 20 and the second clamping end 21, the two clamping rods 1 are rotated relatively, the first clamping end 20 and the second clamping end 21 are closed, the protrusions 200 on the first clamping end 20 are embedded with the grooves 210 of the second clamping end 21 to clamp the weeds at the embedded part, the weeds are prevented from being separated in the pulling process, and meanwhile, the possibility that the weeds are pulled off in the pulling process is reduced; then pulling upwards to pull out the weeds with roots; when the garden mulch is dry or the weeds are firmly rooted, the weeds are pulled to be easily broken from the roots and the stems by pulling, the first clamping end head 20 and the second clamping end head 21 are opened at a certain angle, then the sharp nail 4 is abutted to the ground, the pedal plate 5 is stepped downwards, the steel nail 4 is rooted into the ground, then the first clamping end head 20 and the second clamping end head 21 are closed, the stems and leaves of the weeds are clamped at the embedded part of the groove 210 and the protrusion 200, the hook claw 40 on the side wall of the sharp nail 4 is clamped at the roots of the weeds, and then the weeds are pulled upwards to pull out the weeds with roots; after the use is finished, the two clamping rods 1 are kept in a closed state under the action of the tension spring 14, so that the clamping rods are convenient to store; when weeds are pulled out, workers do not need to squat down to operate, so that the risk of being scratched by plant branches is reduced, and the weeds are pulled out more conveniently.

In practical application, because the heights of workers are different, the heights of some people are higher, and when the weed extractor is used for weeding, the people may need to bend over; some workers are low in height and may have inconvenience in operation due to the fact that the clamping rod 1 is too long when the workers are used.

In order to improve the applicability of the weeding machine, referring to fig. 3, the straight rod 10 comprises a sleeve 100 and an inner rod 101; the sleeve 100 is a hollow tubular structure and has an opening at one end; the diagonal rod 11 is arranged at one closed end of the sleeve 100 and is integrally cast and molded with the sleeve 100; the inner rod 101 is arranged at one end of the opening of the sleeve 100; the inner rod 101 is inserted into the sleeve 100 and is in sliding fit with the sleeve 100; one end of the inner rod 101, which is positioned in the sleeve 100, extends outwards to form a limiting snap ring 1010; the opening of the sleeve 100 extends inwards along the radial direction to form a limiting clamping edge 1000, and the limiting clamping ring 1010 and the limiting clamping edge 1000 limit the inner rod 101 in the sleeve 100 together; the handle 13 is arranged at one end of the inner rod 101, which is far away from the opening of the sleeve 100; a locking member for limiting the relative sliding of the sleeve 100 and the inner rod 101 is arranged outside the opening end of the sleeve 100.

Referring to fig. 3 and 4, retaining member 6 includes a sleeve 60 and a rotating grip 61; the sleeve 60 comprises a threaded sleeve 600, a connecting sleeve 601 and a clamping sleeve 602; the threaded sleeve 600 is a hollow cylindrical structure with openings at two ends, the threaded sleeve 600 is fixedly connected with one end of the sleeve 100 with the opening, and interference fit is adopted in the embodiment; a thread is formed on the outer periphery of the threaded sleeve 600; the connecting sleeve 601 is a hollow cylindrical structure with openings at two ends, and the inner diameter of the connecting sleeve is equal to that of the threaded sleeve 600; the connecting sleeve 601 is arranged at one end, far away from the opening of the sleeve 100, of the threaded sleeve 600, the axis of the connecting sleeve 601 is overlapped with that of the threaded sleeve 600, and the connecting sleeve 601 and the threaded sleeve 600 are integrally cast and molded; the clamping cylinder 602 is a hollow circular truncated cone-shaped structure with openings at two ends, and the inner diameter of the clamping cylinder is equal to that of the connecting sleeve 601; the outer diameter of the small end of the clamping cylinder 602 is equal to the outer diameter of the connecting sleeve 601, the clamping cylinder 602 is arranged at one end of the connecting sleeve 601 far away from the threaded sleeve 600, and the small end of the clamping cylinder 602 corresponds to one end of the connecting sleeve 601 far away from the threaded sleeve 600; the axis of the clamping cylinder 602 is coincided with the axial direction of the connecting sleeve 601 and is integrally cast and molded with the connecting sleeve 601; a plurality of notch grooves 6020 penetrating through the outer wall of the clamping cylinder are formed in the large end of the clamping cylinder 602 away from the connecting sleeve 601; the notched groove 6020 extends from the opening of the large end of the clamping cylinder 602 to the connecting sleeve 601 along the bus direction of the clamping cylinder 602; the inner rod 101 penetrates through the sleeve 60 and is in sliding fit with the sleeve 60; the rotating handle sleeve 61 is matched with the sleeve 60 and sleeved on the sleeve 60, and the inner circumferential surface of the rotating handle sleeve 4 corresponding to the threaded sleeve 600 is provided with threads.

The principle of implementation of retaining member 6 is: when the height of a worker is high, the rotary handle sleeve 61 can be unscrewed, one end of the clamping cylinder 602 provided with the notch groove 6020 is loosened, the wrapping force of the clamping cylinder 602 on the inner rod 101 is loosened, the inner rod 101 can slide in the sleeve 100, after the inner rod 101 slides out of the sleeve 100 to a certain distance, the rotary handle sleeve 61 is screwed, one end of the clamping cylinder 602 provided with the notch groove 6020 is clamped, so that the inner rod 101 is kept stable on the sleeve 100, and the length of the clamping rod 1 is prolonged, so that the rotary handle sleeve is convenient for the high-height person to use; otherwise, the rotating handle 61 is loosened, the inner rod 101 slides into the sleeve 100 to a certain distance, and then the rotating handle sleeve 61 is tightened to enable the inner rod 101 to be kept stable on the sleeve 100, and the length of the clamping rod 1 is shortened, so that the operation of people with low height is facilitated.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. A extirpator, its characterized in that: comprises two clamping rods (1) and a clamping end (2) which are hinged with each other; the clamping end head (2) comprises a first clamping end head (20) and a second clamping end head (21); the first clamping end (20) and the second clamping end (21) are respectively arranged on one side of the two clamping rods (1) in the same direction; when the two clamping rods (1) are closed, one opposite side of the first clamping end head (20) and one opposite side of the second clamping end head (21) are abutted.

2. A weed extractor as claimed in claim 1, wherein: a plurality of arc-shaped bulges (200) are convexly arranged on one surface of the first clamping end head (20) opposite to the second clamping end head (21); the bulges (200) extend along the length direction of the first clamping end (20), and a plurality of bulges (200) are fully distributed on one surface of the first clamping end (20) opposite to the second clamping end (21); a plurality of grooves (210) matched with the bulges (200) on the first clamping end head (20) are arranged on one surface of the second clamping end head (21) opposite to the first clamping end head (20); when the first clamping head (20) and the second clamping head (21) are mutually attached, the bulge (200) on the first clamping head (20) is mutually embedded with the groove (210) on the second clamping head (21).

3. A weed extractor as claimed in claim 1, wherein: a row of sharp nails (4) are respectively arranged at the bottom ends of the first clamping end head (20) and the second clamping end head (21); the side walls of the sharp nails (4) are convexly provided with hook claws (40), and the hook claws (40) on the two rows of sharp nails (4) are oppositely arranged; when the first clamping end head (20) and the second clamping end head (21) are mutually attached, the oppositely arranged hook claws (40) on the two rows of the pointed nails (4) are mutually close.

4. A weed extractor as claimed in claim 3, wherein: a square foot board (5) is arranged on the clamping end (2).

5. A weed extractor as claimed in claim 1, wherein: the clamping rod (1) comprises a straight rod (10) and an inclined rod (11); the diagonal rod (11) is arranged at one end of the straight rod (10) and forms an obtuse angle with the straight rod (10); when two clamping rods (1) are abutted tightly, the straight rods (10) on the two clamping rods (1) are parallel to each other, the inclined rods (11) on the two clamping rods (1) are intersected, and the hinged point is located at the intersection point of the inclined rods (11) on the two clamping rods (1).

6. A weed extractor as claimed in claim 1, wherein: a tension spring (14) is arranged on the straight rod (10) of the two clamping rods (1) and close to the inclined rod (11); two ends of the tension spring (14) are respectively fixedly connected with the straight rods (10) on the two clamping rods (1); the tension spring (14) is always in a tension state.

7. A weed extractor as claimed in claim 6, wherein: the straight rod (10) comprises a sleeve (100) and an inner rod (101); the sleeve (100) is of a hollow tubular structure, and one end of the sleeve is provided with an opening; the inclined rod (11) is arranged at one closed end of the sleeve (100); the inner rod (101) is inserted into the sleeve (100) and is in sliding fit with the sleeve (100); a locking piece (6) for limiting the relative sliding of the sleeve (100) and the inner rod (101) is arranged on the outer side of one end of the opening of the sleeve (100); the locking piece (6) is fixedly connected with the opening of the sleeve (100); the inner rod (101) penetrates through the locking piece (6) and is inserted into the sleeve (100).

8. A weed extractor as claimed in claim 7, wherein: the locking piece (6) comprises a sleeve (60) and a rotary handle sleeve (61); the sleeve (60) comprises a threaded sleeve (600), a connecting sleeve (601) and a clamping cylinder (602); the threaded sleeve (600) is of a hollow cylindrical structure with openings at two ends, and the threaded sleeve (600) is fixedly connected with one end of the sleeve (100) with the opening; the periphery of the threaded sleeve (600) is provided with threads; the connecting sleeve (601) is a hollow cylindrical structure with openings at two ends, and the inner diameter of the connecting sleeve is equal to that of the threaded sleeve (600); the connecting sleeve (601) is coaxially arranged at one end, far away from the opening of the sleeve (100), of the threaded sleeve (600); the clamping cylinder (602) is of a hollow circular truncated cone-shaped structure with openings at two ends, and the inner diameter of the clamping cylinder is equal to that of the connecting sleeve (601); the outer diameter of the small end of the clamping cylinder (602) is equal to that of the connecting sleeve (601), the clamping cylinder (602) is coaxially arranged at one end, away from the threaded sleeve (600), of the connecting sleeve (601), and the small end of the clamping cylinder (602) corresponds to one end, away from the threaded sleeve (600), of the connecting sleeve (601); a plurality of notch grooves (6020) penetrating through the outer wall of the clamping cylinder (602) are formed in the clamping cylinder (602); the notch groove (6020) extends to the connecting sleeve (601) from the opening of the large end of the clamping cylinder (602) along the bus direction of the clamping cylinder (602); the rotating handle sleeve (61) is matched with the sleeve (60) and sleeved on the sleeve (60), and the inner circumferential surface of the rotating handle sleeve (61) corresponding to the threaded sleeve (600) is provided with threads.

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