CN219293881U - Electric hammer nailing device - Google Patents

Abstract

The utility model discloses an electric hammer nailing device, which belongs to the technical field of concrete engineering construction and comprises an electric hammer nailing device body, wherein a nailing rod groove is formed in the electric hammer nailing device body, a nailing tail circular surface groove is formed in the upper end of the nailing rod groove, an annular groove is formed in the electric hammer nailing device body, a fixing pit is formed in the annular groove, a ground annular groove is formed in the bottom end of the electric hammer nailing device body, a spring fixing construction opening is formed in the inner wall of the nailing tail circular surface groove, a top surface impact drill fixing barrel is crimped at the top end of the electric hammer nailing device body, and nails are placed in the nailing tail circular surface groove; through the electric hammer nailing machine body, nail pole recess, the fixed construction mouth of spring, top surface strike and bore fixed barrel and nail that set up, can make the electric hammer nailing machine body can multiple nail switch the use at any time, improved the application scope of electric hammer nailing machine body greatly, also improved the availability factor of this electric hammer nailing machine body to a certain extent.

Description

Electric hammer nailing device

Technical Field

The utility model relates to the technical field of engineering construction, in particular to an electric hammer nailing device.

Background

In the existing home decoration engineering and industrial engineering, many electric devices replace the original manual original prop, wherein an air nail gun and a gun nail gun fix nails through one-time knocking, most of the functions of a hammer are effectively replaced, but the existing nailing tool still has some defects, for example, only one half of nails or nails with certain length are reserved, no solution exists except that the hammer is used for nailing, meanwhile, the air nail gun and the gun nail have high nailing speed and large kinetic energy, and when in a soft surface structure, such as a wood plate, a plate surface is sunken, and the plate surface is damaged seriously. And only specific nails can be used, not nails of various lengths and diameters. For this purpose we propose an electric hammer tacker.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the utility model provides the electric hammer nailing machine, which can enable the electric hammer nailing machine body to be used by switching various nails at any time through arranging the nailing machine body, the nailing rod groove, the nailing tail circular surface groove, the annular groove, the fixing pit, the bottom annular groove, the spring fixing construction opening, the top surface impact drill fixing barrel and the nails, thereby greatly improving the application range of the nailing machine body and improving the use efficiency of the electric hammer nailing machine body to a certain extent. The electric hammer nailing device is an electric hammer with an electric pick function.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an electric hammer nail ware, includes the electric hammer nail ware body, this internal nail pole recess of having seted up of electric hammer nail ware, nail tail round surface recess has been seted up to nail pole recess upper end, annular groove has been seted up on the electric hammer nail ware body, fixed pit has been seted up on the annular groove, ground annular groove has been seted up to electric hammer nail ware body bottom, the fixed construction mouth of spring has been seted up to nail tail round surface recess inner wall, the top surface impact drill fixed barrel has been pressed to electric hammer nail ware body top, the nail has been placed in the nail tail round surface recess.

Through adopting above-mentioned technical scheme, the annular groove that sets up generally opens the round recess on the column surface and can pass through the roll-off recess, then increases more dark sphere pit in different positions, and what correspond in this technique is the position of the nail recess of putting of different diameters, and the annular groove can make the condition that the fixed ring in locking nail ring position can not appear reciprocating.

In a preferred embodiment, the depth of the groove of the nail rod groove is the same as the diameter of the national standard long nail, the cross section of the groove of the nail rod groove is a U-shaped cross section, and the bottom of the groove of the nail rod groove is semicircular; the diameter of the circular surface groove of the nail tail is the diameter of a national standard long nail, the depth of the circular surface groove of the nail tail is larger than the diameter of the nail tail of the national standard long nail, and the length of the groove of the circular surface groove of the nail tail is larger than the thickness of the nail tail of the national standard steel nail.

Through adopting above-mentioned technical scheme for in nail pole recess and the circular surface recess of tail can be put into to the nail steadily, thereby make this technical scheme can normal operating.

In a preferred embodiment, the carrier of the shank groove and the tail circular groove may be arranged in a columnar structure, and the columnar through-core structure is in threaded connection with the electric hammer tacker body.

Through adopting above-mentioned technical scheme for this columnar structure can dismantle with electric hammer nail ware body, makes electric hammer nail ware body bottom can conveniently change different columnar carrier structures, can effectively improve availability factor and reasonable reduction running cost.

In a preferred embodiment, the annular groove corresponds to the position where the fixing pit is formed, and the largest circular groove at the tail of the nail is intersected with the annular groove on the ground to form a spring fixing construction opening.

By adopting the technical scheme, the fixed pit is slightly deeper than the annular groove, and the concrete position is based on the matching position of the pin rod groove and the locking pin ring. Wherein, different fixed pit position intervals are set according to the strength of the elastic deformation and the recovery yield of the connecting spring,

after the spring enters the bottom, the fixing methods such as riveting, welding, glue injection and the like can be carried out on the spring and the electric hammer nailing device body through the hole, so that the spring and the steel sleeve connected with the spring cannot fall off, and the locking ring at the tail position of the nail cannot be integrally pulled out to be damaged.

In a preferred embodiment, the electric hammer nailing device body is externally sleeved with a nailing ring, a nailing groove is formed in the outer wall of the nailing ring, a position locking groove is formed in the upper end of the nailing groove, and an inclined opening is formed in the inner wall of the position locking groove.

As shown in FIG. 12, by adopting the above technical scheme, the protruding tail has the function of a pin, and simultaneously when the locking nail ring is pressed downwards, the tail can be separated from the position locking groove along the inclined plane, wherein the sum of the inclined angle oblique moment and the friction moment caused by the torsion force of the connecting spring of the locking nail ring position fixing ring of the inclined plane notch and the tail is slightly larger than the axial contraction force moment of the connecting spring of the locking nail ring position fixing ring, so that the locking nail ring can not be separated under the spring contraction force, and the locking nail ring can be separated easily when being pressed against a plate, and can be rotated to the same position of the nail rod groove, the nail tail circular surface groove combination structure and the nail placing groove.

In a preferred embodiment, the upper end of the locking nail ring is connected with a locking nail ring position fixing ring in a pressing mode, the outer wall of the locking nail ring position fixing ring is provided with a steel column bead fixing clamp spring, the inner wall of the steel column fixing clamp spring is provided with steel balls in a fitting mode with the outer wall of the locking nail ring position fixing ring, the outer wall of the locking nail ring is provided with a connecting spring, the upper end of the connecting spring is connected with the locking nail ring position fixing ring, and the lower end of the connecting spring is connected with the locking nail ring.

Through adopting above-mentioned technical scheme, make the steel nail on the lock pin ring place breach the same with nail pole recess position through rotatory lock pin ring position fixation ring, use the mode of spring preforming clamp steel ball, fix in the annular recess on the nail ware main part, steel column fixation jump ring is the fixed orifices that is used for fixing the steel ball at the position fixation ring of lock in addition, and provide inwards elastic pressure, still the steel ball is the steel ball that is used for fixed lock ring position fixation ring, connect the spring's effect lies in, utilize the thrust of spring and the axial turning force of spring when rotating, can make the lock pin ring possess simultaneously upwards and the ability of gyration. The diameter of the inner wall of the locking nail ring and the diameter of the inner wall of the fixing ring of the locking nail ring are slightly larger than the diameter of the main body of the nailing device, so that the nailing device can be fully and slidingly connected and the nailing device can not shake a large distance, and the construction effect is affected.

The utility model has the technical effects and advantages that: the screw tail position locking ring is placed inside the ground annular groove, the top end of the top surface impact drill fixing barrel is provided with a rubber anti-drop sleeve, and the impact drill bit is inserted inside the rubber anti-drop sleeve.

By adopting the technical scheme, the nail tail position locking ring comprises a spring and a steel sleeve connected with the spring, when the nail tail is not stressed, the steel sleeve protrudes out of the bottom surface of the main body by a certain distance, when the nail tail nailed on the plate surface is positioned in the sleeve, the nail tail surface of the nail can be integrally knocked into the plate and is flush with the plate when the nail is impacted by using the electric pick function, and the high-frequency jump is avoided from being separated from the bottom surface of the electric hammer nailing machine body; in addition, the effect of the rubber anti-drop sleeve can ensure that the impact drill bit is fixed with the electric hammer nailing machine body without loosening, constructors can firstly adjust the locking nail ring and the fixing ring to ensure that the grooves of the locking nail ring correspond to the standard steel nail grooves to be fixed in batches, then the electric hammer nailing machine can be used, constructors can clamp one steel nail in the grooves, then rotate the locking nail ring to fix the steel nail, then push upwards to ensure that the tail protruding part of the steel nail is exactly clamped at the lower part of the grooves of the locking nail ring, and because the upward pushing action is that the upper part of the locking nail ring protrudes, the electric hammer nailing machine is higher than the upper surface of the nailing machine, constructors can directly nail the electric hammer nailing machine, due to the effect of the locking nail ring, constructors can fix the steel nail into any angle on the wall surface at any angle on the surface of the wall surface or the wood plate and the like, when the nail nails are nailed into the surface by a certain depth, the head part of the locking nail ring is continuously extruded by the wall surface, when the nail is to a certain extent, the protruding part of the tail of the nail is separated from the lower groove of the nail locking ring, at the moment, the nail locking ring automatically rotates back to the original position due to the retraction action of the spring, the opening of the nail locking ring corresponds to the groove of the nail nailing device, at the moment, a constructor can separate the nail without manually screwing the nail locking ring by shaking the electric pick, after the nail is separated, the constructor can directly nail the top surface of the nail nailing device, can nail the nail into a proper depth according to the required depth of the nail, can set a steel column fixing clamp spring and a steel ball on the nail locking ring and move down the annular groove and the fixing pit under the extremely simplified requirement, the method has low cost, the steel nail is required to be released by manually unscrewing the nail locking ring, and the steel column fixing clamp spring and the steel ball can be changed into a clamping reed form when friction loss is not considered, this form has the advantage of reducing the processing costs even further and reducing the time it takes to use.

The utility model has the technical effects and advantages that:

1. through the electric hammer nailing machine body, nail pole recess, nail tail round surface recess, annular groove, fixed pit, ground annular groove, spring fixed construction mouth, top surface strike and bore fixed bucket and nail that set up, can make the electric hammer nailing machine body can multiple nail switch at any time and use, improved the application scope of electric hammer nailing machine body greatly, also improved the availability factor of this electric hammer nailing machine body to a certain extent.

2. Through the columnar structure carrier of nail pole recess and tail round surface recess for electric hammer nail ware body bottom can conveniently be changed different columnar carrier structures, can effectively improve availability factor and reasonable reduction running cost.

3. Through mutually supporting of locking nail ring, nail placing groove, position locking groove, locking nail ring position fixing ring, steel column fixing jump ring, steel ball, connecting spring, tail position locking ring, rubber anticreep cover and impact bit, make its electric hammer nailing machine body's advantage lie in still further reducing processing cost, reduce its live time.

Drawings

Fig. 1 is a schematic view showing a three-dimensional structure of a body of an electric hammer nailing machine according to the present utility model.

Fig. 2 is a schematic view showing a sectional state of a structure at a body of the electric hammer tacker of the present utility model.

Fig. 3 is a schematic view showing a three-dimensional structure of a groove of a shank according to the present utility model.

FIG. 4 is a schematic view showing a cross-sectional view of a nail structure according to the present utility model.

Fig. 5 is a schematic view showing a perspective structure of a lock pin ring of the present utility model.

Fig. 6 is a schematic view of a three-dimensional structure state and a cross section of a steel ball fixing clamp spring.

FIG. 7 is a schematic view of a locking collar of the present utility model.

Fig. 8 is a schematic view showing a three-dimensional structure of a locking ring at the tail position of the nail.

FIG. 9 is a schematic perspective view of a screw connection structure of a nailing machine body according to the present utility model

FIG. 10 is a simplified schematic diagram of the present utility model

FIG. 11 is a schematic view of a pole barrel structure according to the present utility model

FIG. 12 is a schematic view of the force balance of the locking pin ring according to the present utility model

Wherein: 1. a electric hammer tacker body; 2. a shank groove; 3. a circular groove at the tail of the nail; 4. an annular groove; 5. fixing the pit; 6. a bottom annular deep groove; 7. the spring is used for fixing the construction opening; 8. a top surface impact drill fixing cylinder; 9. a nail; 10. a locking pin ring; 11. a nail placing groove; 12. a position locking groove; 13. a locking nail ring position fixing ring; 14. the steel ball is used for fixing the clamp spring; 15. steel balls; 16. a connecting spring; 17. a locking ring at the tail position; 18. rubber anti-drop sleeve; 19. percussion drill bits.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to the attached drawings 1-9 of the specification, the electric hammer nailing machine comprises an electric hammer nailing machine body 1, wherein a nailing rod groove 2 is formed in the electric hammer nailing machine body 1, a nailing tail circular surface groove 3 is formed in the upper end of the nailing rod groove 2, an annular groove 4 is formed in the electric hammer nailing machine body 1, a fixing pit 5 is formed in the annular groove 4, a ground annular groove 6 is formed in the bottom end of the electric hammer nailing machine body 1, a spring fixing construction opening 7 is formed in the inner wall of the nailing tail circular surface groove 3, a top surface impact drill fixing barrel 8 is crimped at the top end of the electric hammer nailing machine body 1, nails 9 are placed in the nailing tail circular surface groove 3, a circle of grooves are formed in the columnar surface generally, then deeper spherical pits can be formed in different positions, in the technology correspondingly, the positions of the nailing grooves with different diameters can prevent a locking nail ring from moving up and down; the depth of the nail rod groove 2 is the same as the diameter of the national standard long nail, the cross section of the groove of the nail rod groove 2 is a U-shaped cross section, and the bottom is arranged in a semicircle; the depth of the circular surface groove 3 of the nail tail is larger than the diameter of the nail tail of the national standard long nail, and the length of the circular surface groove 3 of the nail tail is larger than the thickness of the nail tail of the national standard steel nail, so that the nail 9 can be stably placed in the nail rod groove 2 and the circular surface groove 3 of the nail tail, and the technical scheme can normally operate; the annular groove 4 corresponds to the fixing pit 5 in terms of the position, the fixing pit 5 is slightly deeper than the annular groove, and the specific position is based on the matching position of the nail rod groove and the locking nail ring. Wherein, different fixed pit position intervals are set according to the strength of elastic deformation and the recovery yield of the connecting spring; the intersection of the largest nail tail circular surface groove 3 and the bottom surface annular groove 6 is provided with a spring fixing construction opening 7, when the spring of the nail tail position locking ring 17 enters the bottom, the fixing methods such as riveting, welding, glue injection and the like can be carried out on the spring and the electric hammer nail body 1 through the hole, so that the steel sleeve connected with the spring can not fall off, and the whole falling-off of the nail tail position locking ring 17 can not be guaranteed to be damaged. .

In addition, as shown in fig. 9, the carrier of the nail rod groove 2 and the nail tail circular surface groove 3 can be in a columnar structure, and the columnar structure is in threaded connection with the electric hammer nailing device body 1, so that the columnar structure can be detached from the electric hammer nailing device body 1, different columnar carrier structures can be conveniently replaced at the bottom end of the electric hammer nailing device body 1, the use efficiency can be effectively improved, and the operation cost can be reasonably reduced.

The nail device is characterized in that a nail locking ring 10 is sleeved outside the nail device body 1 of the electric hammer, a nail placing groove 11 is formed in the outer wall of the nail locking ring 10, a position locking groove 12 is formed in the upper end of the nail placing groove 11, an inclined opening is formed in the inner wall of the position locking groove 12, so that a protruding nail tail has the function of a pin, meanwhile, when the nail locking ring 10 is subjected to downward pressure, the nail tail can be separated from the position locking groove along an inclined plane, wherein the sum of the inclined angle inclined moment and the friction moment caused by the torsion of a connecting spring of the nail tail through the nail locking ring position fixing ring 13 is slightly larger than the axial shrinkage force moment of the connecting spring of the nail locking ring position fixing ring 13, the nail locking ring 10 can not be separated under the shrinkage force of the spring, the nail locking ring 10 can be easily separated under the pressure of a plate, and the nail locking ring rotates to the same position of the nail rod groove 2 and the nail tail circular surface groove 3; the upper end of the lock nail ring 10 is connected with a lock nail ring position fixing ring 13 in a pressing mode, a steel column fixing clamp spring 14 is arranged on the outer wall of the lock nail ring position fixing ring 13, steel balls 15 are arranged on the inner wall of the steel column fixing clamp spring 14 and the outer wall of the lock nail ring position fixing ring 13 in a fitting mode, a connecting spring 16 is arranged on the outer wall of the lock nail ring 10, the upper end of the connecting spring 16 is connected with the lock nail ring position fixing ring 13, the lower end of the connecting spring 16 is connected with the lock nail ring 10, a steel nail placing notch on the lock nail ring 10 is identical to the position of a nail rod groove 2 through rotating the lock nail ring 10 position fixing ring, the steel balls are clamped in the annular groove on the nail device body in a spring pressing mode, in addition, the steel column fixing clamp spring 14 is used for fixing the steel balls in a fixing hole of the position fixing ring of the lock, inward elastic pressure is provided, the steel balls 15 are steel balls used for fixing the position fixing ring of the lock nail ring, and the connecting spring 16 is used for utilizing thrust of the spring and axial rotating force of the spring when rotating. The locking pin ring 10 can be provided with both upward and rotation capabilities; the bottom surface annular groove 6 is provided with a nail tail position locking ring 17, the top surface impact drill fixing barrel 8 is provided with a rubber anti-drop sleeve 18, an impact drill bit 19 is inserted into the rubber anti-drop sleeve 18, the nail tail position locking ring 17 comprises a spring and a steel sleeve connected with the spring, when the nail tail is not stressed, the steel sleeve protrudes out of the bottom surface of the main body by a certain distance, when the nail tail nailed on the surface of the plate is positioned in the sleeve, when the electric pick function is used for impact, high-frequency jumping is not generated and the nail tail is separated from the bottom surface of the electric hammer nailing machine body 1, when the nail is nailed into the plate, the nail tail position locking ring 17 has elasticity, and can be taken in the electric hammer nailing machine body 1 along with the pressure, so that the nail can be integrally knocked into the plate, and the nail tail surface of the nail tail is flush with the plate; in addition, the rubber anti-loosening sleeve 18 can fix the impact drill bit 19 and the electric hammer nailing machine body 1 without loosening, and also a constructor can fix the grooves of the locking nail ring on the positions of steel nail standard grooves which need to be fixed in batches by adjusting the locking nail ring and the fixing ring, then the electric hammer nailing machine can be used, the constructor clamps one steel nail in the grooves, then rotates the locking nail ring to fix the steel nail, then pushes upwards to enable the tail protruding part of the steel nail to be exactly clamped at the lower part of the groove of the locking nail ring, and because the upward pushing action is that the upper part of the locking nail ring protrudes, the electric hammer nailing machine is higher than the upper surface of the nailing machine, the constructor can directly nail the electric hammer nailing machine, because of the action of the locking nail ring, the constructor can fix the steel nail into the wall surface at any angle on the material surface such as a wall surface or a wood board, when the nail is nailed into the material surface to a certain depth, and because the head part of the locking nail ring is continuously extruded by the wall surface and retreated, when the nail is to a certain extent, the protruding part of the tail of the nail is separated from the lower groove of the nail locking ring, at the moment, the nail locking ring automatically rotates back to the original position due to the retraction action of the spring, the opening of the nail locking ring corresponds to the groove of the nail nailing device, at the moment, a constructor can separate the nail without manually screwing the nail locking ring by shaking the electric pick, after the nail is separated, the constructor can directly nail the top surface of the nail nailing device, nail can be nailed to a proper depth according to the required depth of the nail, the steel column fixing clamp spring 14 and the steel ball 15 can be arranged on the nail locking ring under the simplified requirement, the annular groove 4 and the fixing pit 5 are moved downwards, the method has low cost, the nail locking ring is required to be unscrewed manually to release the steel nail, the steel column fixing clamp spring 14 and the steel ball 15 can be changed into a clamping spring form when friction loss is not considered, this form has the advantage of reducing the processing costs even further and reducing the time it takes to use.

According to embodiment 1, the function of the tail position locking ring 17 can be directly applied to the exterior of the nailing machine as shown in fig. 11 by simplifying the design, which only has the function of preventing the tail from jumping out of the nailing machine, and the initial working state of the nail needs to be fixed by hands or pliers, which has the advantage that the cost of the processing process is only 1/4 of that of embodiment 1.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are related, other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present disclosure can be combined with each other, and the edge fillet or chamfer treatment of the metal product is that the size of the common metal processing technology is changed due to the metal material and the application direction, but the technology cannot be used as the necessary innovation of the technical improvement;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (8)

1. The utility model provides an electric hammer nailing machine, includes electric hammer nailing machine body (1), its characterized in that: the electric hammer nail ware body (1) is internally provided with a nail rod groove (2), the upper end of the nail rod groove (2) is provided with a nail tail round surface groove (3), the electric hammer nail ware body (1) is provided with an annular groove (4), the annular groove (4) is provided with a fixing pit (5), the bottom end of the electric hammer nail ware body (1) is provided with a ground annular groove (6), the inner wall of the nail tail round surface groove (3) is provided with a spring fixing construction opening (7), the top end of the electric hammer nail ware body (1) is in compression joint with a top surface impact drill fixing barrel (8), and nails (9) are placed in the nail tail round surface groove (3).

2. An electric hammer tacker as set forth in claim 1, wherein: the depth of the nail rod groove (2) is the same as the diameter of a national standard long nail, the cross section of the groove of the nail rod groove (2) is a U-shaped cross section, and the bottom of the groove is semicircular.

3. An electric hammer tacker as set forth in claim 1, wherein: the diameter of the circular surface groove (3) of the nail tail is the diameter of a national standard long nail, the depth of the circular surface groove (3) of the nail tail is larger than the diameter of the nail tail of the national standard long nail, and the length of the groove of the circular surface groove (3) of the nail tail is larger than the thickness of the nail tail of the national standard steel nail.

4. An electric hammer tacker as set forth in claim 1, wherein: the annular groove (4) corresponds to the position where the fixing pit (5) is formed, and the largest circular surface groove (3) at the tail of the nail is intersected with the annular groove (6) on the ground to form a spring fixing construction opening (7).

5. An electric hammer tacker as set forth in claim 1, wherein: the nail rod groove (2) and the carrier of the nail tail circular surface groove (3) are arranged in a columnar structure, and the columnar structure is in threaded connection with the electric hammer nailing device body (1).

6. An electric hammer tacker as set forth in claim 1, wherein: the electric hammer nailing machine is characterized in that a nailing ring (10) is sleeved outside the electric hammer nailing machine body (1), a nailing groove (11) is formed in the outer wall of the nailing ring (10), a position locking groove (12) is formed in the upper end of the nailing groove (11), and an inclined opening is formed in the inner wall of the position locking groove (12).

7. An electric hammer tacker as set forth in claim 6, wherein: the novel lock pin is characterized in that a lock pin ring position fixing ring (13) is pressed at the upper end of the lock pin ring (10), a steel column fixing clamp spring (14) is arranged on the outer wall of the lock pin ring position fixing ring (13), steel balls (15) are arranged on the inner wall of the steel column fixing clamp spring (14) and the outer wall of the lock pin ring position fixing ring (13) in a fitting mode, a connecting spring (16) is arranged on the outer wall of the lock pin ring (10), the upper end of the connecting spring (16) is connected with the lock pin ring position fixing ring (13), and the lower end of the connecting spring (16) is connected with the lock pin ring (10).

8. An electric hammer tacker as set forth in claim 1, wherein: the novel hammer drill is characterized in that a nail tail position locking ring (17) is arranged in the ground annular groove (6), a rubber anti-drop sleeve (18) is arranged at the top end of the top surface impact drill fixing barrel (8), and an impact drill bit (19) is inserted into the rubber anti-drop sleeve (18).

Images