Drill bit of impact electric pick

Abstract

The utility model provides an impact electric pick drill bit which comprises a drill bit body, an external thread is arranged at the upper end of the drill bit body, a locking nut is connected to the external thread, a limiting block is further arranged on the drill bit body, the lower end of a movable protective cover is open, the interior of the movable protective cover is hollow, and a top plate of the movable protective cover is arranged on the drill bit body in a sleeved mode and can slide up and down along the drill bit body. The movable shield is used for covering a to-be-dismantled bolt, so that the drill bit body can be aligned with the to-be-dismantled bolt for dismantling; a spring is arranged between the top plate of the movable protective cover and the locking nut, and the drill bit body is sleeved with the spring; the limiting block is located below the top plate of the movable shield, and when the movable shield slides downwards along the drill bit body, the top plate of the movable shield is blocked through the limiting block so as to limit the downward moving stroke of the movable shield; in a non-working state, under the action of the spring, the top plate of the movable protective cover abuts against the limiting block. According to the impact electric pick drill bit, the efficiency and safety of breaking and dismantling bolts can be improved.

Description

Technical Field

[0001] This utility model relates to the field of drill bit technology, and in particular to an impact electric pick drill bit. Background Technology

[0002] In routine equipment maintenance, it is often necessary to remove bolts in batches. For example, when replacing ball mill liners, all fastening bolts need to be removed. Because a large number of iron foreign objects are stuck in the gaps between the bolts and the liners, removing the bolts becomes time-consuming and laborious.

[0003] In existing technologies, sledgehammers are prone to causing workplace injuries when used for demolition. While electric hammers greatly reduce the risk of accidents, the drill bits of traditional electric hammers are often pointed or flat, making them prone to falling off the bolts to be removed, resulting in low demolition efficiency. Utility Model Content

[0004] To address the problems existing in the prior art, this application proposes an impact electric hammer drill bit to improve the efficiency and safety of bolt breaking.

[0005] To achieve the above objectives, this application proposes an impact electric hammer drill bit, comprising a drill bit body, an external thread at the upper end of the drill bit body, a locking nut connected to the external thread, a limiting block on the drill bit body, a movable cover with an open lower end and a hollow interior, the top plate of the movable cover being fitted onto the drill bit body and capable of sliding up and down along the drill bit body, the movable cover being used to cover the bolt to be removed, allowing the drill bit body to be aligned with the bolt for demolition; a spring is provided between the top plate of the movable cover and the locking nut, the spring being fitted onto the drill bit body; the limiting block is located below the top plate of the movable cover, and when the movable cover slides downward along the drill bit body, the limiting block blocks the top plate of the movable cover to limit the downward travel of the movable cover; in the non-working state, under the action of the spring, the top plate of the movable cover abuts against the limiting block.

[0006] In some embodiments, the limiting block is fixedly disposed circumferentially on the outer surface of the drill bit body.

[0007] In some embodiments, the drill bit body is a flat-bottomed drill bit.

[0008] The beneficial effects of this solution are as follows: the aforementioned impact electric hammer drill bit, used for breaking bolts stuck in equipment, has the advantages of simple structure, convenient use, and good performance. Through the positioning function of the movable guard, the drill bit body can quickly and accurately lock the bolt to be removed. During the removal process, the drill bit body can continuously act on the bolt to be removed, making it less likely to slip off the surface of the bolt, thus achieving rapid breaking. During the breaking process, as the bolt to be removed enters the equipment, the movable guard compresses the spring to ensure sufficient breaking distance. Furthermore, based on the setting of the movable guard, it is less likely to cause work-related accidents during the breaking process, improving the safety of breaking and achieving the requirement of continuous breaking. If it is promoted and used in the same industry, it will have great economic and social benefits. Attached Figure Description

[0009] Figure 1 A schematic diagram of the impact electric drill bit in the embodiment is shown.

[0010] Attached reference numerals: 1-Drill bit body, 2-Locking nut, 3-Spring, 4-Modible guard, 5-Limiting block, 6-Bolt to be removed. Detailed Implementation

[0011] The specific embodiments of this application will be further described below with reference to the accompanying drawings.

[0012] In the description of this application, it should be understood that the terms "first," "second," etc., are used to distinguish similar objects, rather than to describe or indicate a specific order or sequence. The terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0013] like Figure 1As shown, the impact drill bit involved in this application includes a drill bit body 1. In use, the drill bit body 1 is assembled on an impact drill. The upper end of the drill bit body 1 is provided with an external thread, and a locking nut 2 is connected to the external thread. A limiting block 5 is also provided on the drill bit body 1. The limiting block 5 is fixedly disposed on the outer surface of the drill bit body 1 circumferentially. The lower end of the movable cover 4 is open and hollow inside. The top plate of the movable cover 4 is fitted onto the drill bit body 1 and can slide up and down along the drill bit body 1. The movable cover 4 is used to cover the bolt 6 to be removed, so that the drill bit body 1 can be aligned with the bolt 6 to be removed. Bolt 6 is used for dismantling; a spring 3 is provided between the top plate of the movable cover 4 and the locking nut 2. The spring 3 is sleeved on the drill bit body 1. One end of the spring 3 is connected to the locking nut 2 and the other end is connected to the top plate of the movable cover 4; the limiting block 5 is located below the top plate of the movable cover 4. When the movable cover 4 slides down along the drill bit body 1, the limiting block 5 blocks the top plate of the movable cover 4 to limit the downward movement of the movable cover 4; in the non-working state, under the action of the spring 3, the top plate of the movable cover 4 abuts against the limiting block 5.

[0014] In order to increase the contact area between the drill bit body 1 and the bolt 6 to be removed, the drill bit body 1 adopts a flat-bottomed drill bit so that the drill bit body 1 is not easy to slip off the bolt 6 to be removed during use.

[0015] In practical use, the drill bit body 1 is first installed on the impact hammer, and then the movable cover 4 is placed over the bolt 6 to be removed. At this time, the movable cover 4 is in contact with the surface of the equipment where the bolt 6 is located. Through the positioning of the movable cover 4, the drill bit body 1 can make contact with the bolt 6. The impact hammer is then activated, and under the impact force of the impact hammer, the bolt 6 moves downward. When the bolt 6 moves downward to be flush with the surface of the equipment, the impact hammer acts on the bolt 6 again, and the bolt 6 continues to move downward, causing the movable cover 4 to compress the spring 3. The drill bit body 1 enters the equipment and continues to impact the bolt 6 until it falls off. After the bolt is removed, the drill bit body 1 is removed from the equipment, and under the action of the spring 3, the movable cover 4 can quickly return to its original position.

[0016] The impact drill bit involved in this application is used to break up jammed bolts on equipment. It has the advantages of simple structure, convenient use, and good performance. Through the positioning function of the movable guard, the drill bit body can quickly and accurately lock the bolt to be removed. During the removal process, the drill bit body can continuously act on the bolt to be removed, and it is not easy to slip off the surface of the bolt. It can quickly achieve the breaking. During the breaking process, as the bolt to be removed enters the equipment, the movable guard compresses the spring to ensure sufficient breaking distance. Furthermore, based on the setting of the movable guard, it is not easy to cause work-related accidents during the breaking process, which can improve the safety of breaking and achieve the requirement of continuous breaking. If it is promoted and used in the same industry, it will have great economic and social benefits.

[0017] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. An impact electric hammer drill bit, characterized in that: The device includes a drill bit body with an external thread at its upper end, a locking nut connected to the thread, and a limiting block. A movable cover has an open lower end and is hollow internally. The top plate of the movable cover is fitted onto the drill bit body and can slide up and down along it. The movable cover covers the bolt to be removed, allowing the drill bit body to be aligned with the bolt for dismantling. A spring is provided between the top plate of the movable cover and the locking nut, and the spring is fitted onto the drill bit body. The limiting block is located below the top plate of the movable cover. When the movable cover slides downwards along the drill bit body, the limiting block blocks the top plate of the movable cover, limiting its downward movement. In the non-working state, under the action of the spring, the top plate of the movable cover rests against the limiting block.

2. The impact electric drill bit according to claim 1, characterized in that: The limiting block is fixedly disposed on the outer surface of the drill bit body along the circumference.

3. The impact drill bit according to claim 1, characterized in that: The drill bit body is a flat-bottomed drill bit.

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