CN213591824U

CN213591824U - Pistol drill bit damping device for engineering

Info

Publication number: CN213591824U
Application number: CN202022628508.XU
Authority: CN
Inventors: 岳甫强; 张世栋
Original assignee: Anhui Gengcheng Construction Engineering Co ltd
Current assignee: Anhui Gengcheng Construction Engineering Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-07-02
Anticipated expiration: 2030-11-13

Abstract

The utility model relates to the technical field of pistol drills, and discloses a pistol drill bit damping device for engineering, which comprises a machine cabin, wherein a motor is fixedly arranged inside the machine cabin, an upper cover body is fixedly arranged on the lower surface of the machine cabin, a motor damping component is arranged on the inner wall of the machine cabin outside the motor, a drill rod is fixedly arranged on the transmission end of the motor, a lower cover body is fixedly arranged on the lower surface of the upper cover body through threads, a fixed ring frame is fixedly arranged on the lower surface of the lower cover body, a limit ring is fixedly arranged on the lower surface of the fixed ring frame, the rubber sleeve ring is used for carrying out preliminary damping on the vibration generated in the rotation process of the motor, the residual vibration is counteracted by the rotation of a ring strip in a ring groove, and finally, the vibration generated by the motor is reduced by a damping layer, and the vibration generated in the process of drilling work executed by rotating the drill rod is reduced through the shock absorption measures, therefore, the drill rod is kept stable, and the precision of drilling work is ensured.

Description

Pistol drill bit damping device for engineering

Technical Field

The utility model relates to a pistol drill technical field specifically is a pistol drill bit damping device for engineering.

Background

The electric hand drill is a drilling tool taking an alternating current power supply or a direct current battery as power, is one of handheld electric tools, is a product with the largest sales volume in the electric tool industry, is widely applied to the industries of buildings, decorations, universal furniture and the like, is used for drilling holes or penetrating objects on objects, and is also called as an electric hammer in some industries.

However, the pistol drill used in the engineering has great self vibration, often causes the drill rod to shift, and the drilling precision is difficult to control. Accordingly, one skilled in the art provides a shock absorbing device for a drill bit of an engineering pistol drill to solve the above-mentioned problems of the background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pistol drill bit damping device for engineering to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a shock absorption device for a drill bit of a pistol drill for engineering comprises a machine cabin, wherein a motor is fixedly installed inside the machine cabin, an upper cover body is fixedly installed on the lower surface of the machine cabin, a motor shock absorption assembly is arranged on the inner wall of the machine cabin outside the motor, a drill rod is fixedly installed at the transmission end of the motor, a lower cover body is fixedly installed on the lower surface of the upper cover body through threads, a fixed ring frame is fixedly installed on the lower surface of the lower cover body, and a limiting ring is fixedly installed on the lower surface of the fixed ring frame;

the motor damping component comprises a damping cavity, rubber lug blocks are fixedly mounted on two sides of the outside of the damping cavity, an annular groove is formed in the inner circle center side wall of the damping cavity, a rubber lantern ring is movably inscribed in the inner circle center of the damping cavity, and an annular strip is sleeved on the outside of the rubber lantern ring.

As a further aspect of the present invention: the damping cavity is filled with a damping layer, and the damping layer is made of thermoplastic polyurethane.

As a further aspect of the present invention: the ring strip is rotatably arranged inside the ring groove.

As a further aspect of the present invention: the inner wall of the rubber lantern ring is tightly attached to the outer portion of the motor, and a rubber pad is arranged between the motor and the upper cover body.

As a further aspect of the present invention: the limiting ring is embedded in the lower surface of the fixed ring frame and is made of stainless steel.

As a further aspect of the present invention: and the inner annular wall of the limiting ring is coated with lubricating oil.

Compared with the prior art, the beneficial effects of the utility model are that:

by adopting the above technical scheme, the utility model, utilize the rubber lantern ring to rotate the vibrations that the in-process produced to the motor and carry out preliminary shock attenuation to pass through the gird with remaining vibrations and offset the part at the annular internal rotation, utilize the shock-absorbing layer to subdue the vibrations that the motor produced at last, through shock attenuation measure layer upon layer, reduce the motor and carry out the produced vibrations of in-process that drills into work rotating the drilling rod, thereby make the drilling rod remain stable, guarantee the precision of the work of creeping into.

Drawings

FIG. 1 is a schematic structural diagram of a shock absorbing device for a drill bit of an engineering pistol drill;

FIG. 2 is a top view of the motor damper assembly;

fig. 3 is a sectional view of a motor damper assembly.

In the figure: 1. a motor; 2. a motor damping assembly; 21. a damping chamber; 22. a ring groove; 23. a rubber ear piece; 24. a shock-absorbing layer; 25. a rubber collar; 26. a ring strip; 27. a rubber pad; 3. a machine cabin; 4. an upper cover body; 5. a lower cover body; 6. a stationary ring frame; 7. a limiting ring; 8. and (5) drilling a rod.

Detailed Description

Referring to fig. 1-3, in the embodiment of the present invention, a shock absorbing device for a drill bit of a gun drill for engineering includes a machine cabin 3, a motor 1 is fixedly installed inside the machine cabin 3, an upper cover 4 is fixedly installed on a lower surface of the machine cabin 3, a motor shock absorbing assembly 2 is installed on an inner wall of the machine cabin 3 outside the motor 1, the motor shock absorbing assembly 2 includes a shock absorbing cavity 21, a shock absorbing layer 24 is filled inside the shock absorbing cavity 21, the shock absorbing layer 24 is made of thermoplastic polyurethane, the thermoplastic polyurethane has good wear resistance and shock absorbing performance, rubber lugs 23 are fixedly installed on both sides of the outside of the shock absorbing cavity 21, a ring groove 22 is opened on an inner center side wall of the shock absorbing cavity 21, a rubber lantern ring 25 is movably inscribed in the inner center of the shock absorbing cavity 21, the inner wall of the rubber lantern ring 25 is tightly attached to the outside of the motor 1, a rubber pad 27 is installed between the motor 1 and the upper cover 4, the ring strip 26 is rotatably installed inside the annular groove 22, the transmission end of the motor 1 is fixedly provided with the drill rod 8, the lower surface of the upper cover body 4 is fixedly provided with the lower cover body 5 through threads, the lower surface of the lower cover body 5 is fixedly provided with the fixed ring frame 6, the lower surface of the fixed ring frame 6 is fixedly provided with the limiting ring 7, the limiting ring 7 is embedded and installed on the lower surface of the fixed ring frame 6, the limiting ring 7 is made of stainless steel, the inner annular wall of the limiting ring 7 is coated with lubricating oil, the rubber sleeve ring 25 is used for primarily damping vibration generated in the rotating process of the motor 1, the residual vibration is counteracted in the annular groove 22 through the ring strip 26, finally the vibration generated by the motor 1 is reduced through the damping layer 24, through layer-by-layer damping measures, the vibration generated in the process of the motor 1 when the drill rod 8 is rotated to perform drilling work is reduced, and the, the accuracy of drilling work is guaranteed.

The utility model discloses a theory of operation is: firstly, a switch of the pistol drill is turned on, so that the motor 1 enters a working state, a transmission end of the motor 1 drives the drill rod 8 to rotate and execute drilling work, preliminary shock absorption is performed by the aid of the rubber sleeve ring 25, the ring strip 26 rotates in the annular groove 22 to offset the part again, and finally the shock absorption layer 24 is used for reducing shock generated in the process of executing drilling work by rotating the drill rod 8 through shock absorption measures layer by layer, so that the drill rod 8 is kept stable, and the precision of the drilling work is guaranteed.

The above, only be the utility model discloses the embodiment of preferred, nevertheless the utility model discloses a protection scope is not limited to this, and any technical personnel who is familiar with this technical field are in the utility model discloses a technical scheme and utility model thereof design and equate in addition that the engineering is with pistol drill bit damping device or change, all should cover within the protection scope of the utility model.

Claims

1. The gun drill bit damping device for engineering comprises a machine cabin (3) and is characterized in that a motor (1) is fixedly installed inside the machine cabin (3), an upper cover body (4) is fixedly installed on the lower surface of the machine cabin (3), a motor damping assembly (2) is arranged on the inner wall of the machine cabin (3) outside the motor (1), a drill rod (8) is fixedly installed at a transmission end of the motor (1), a lower cover body (5) is fixedly installed on the lower surface of the upper cover body (4) through threads, a fixed ring frame (6) is fixedly installed on the lower surface of the lower cover body (5), and a limiting ring (7) is fixedly installed on the lower surface of the fixed ring frame (6);

motor damper (2) are including shock attenuation chamber (21), the equal fixed mounting in outside both sides of shock attenuation chamber (21) has rubber ear piece (23), and the interior heart lateral wall of circle of shock attenuation chamber (21) seted up annular (22), the interior heart activity inscribe of circle of shock attenuation chamber (21) has rubber lantern ring (25), the external fixation cover of rubber lantern ring (25) is equipped with crown bar (26).

2. The shock absorbing device for the engineering pistol drill bit according to claim 1, characterized in that the shock absorbing cavity (21) is filled with a shock absorbing layer (24), and the shock absorbing layer (24) is made of thermoplastic polyurethane.

3. An engineering pistol drill bit shock absorbing device according to claim 1, characterized in that the ring (26) is rotatably mounted inside the ring groove (22).

4. The shock absorbing device for the drill bit of the engineering pistol drill is characterized in that the inner wall of the rubber sleeve ring (25) is tightly attached to the outer part of the motor (1), and a rubber pad (27) is arranged between the motor (1) and the upper cover body (4).

5. The shock absorbing device for the drill bit of the engineering pistol drill according to claim 1, characterized in that the limiting ring (7) is embedded in the lower surface of the fixing ring frame (6), and the limiting ring (7) is made of stainless steel.

6. An engineering pistol drill bit shock absorbing device according to claim 1, characterized in that the inner ring wall of the stop ring (7) is coated with lubricating oil.