CN220336889U

CN220336889U - Explosion-proof electric hand drill for mine

Info

Publication number: CN220336889U
Application number: CN202322117999.5U
Authority: CN
Inventors: 郭开勇; 张志玲; 郭延涛
Original assignee: Changzhou Hengdun Machinery Technology Co ltd
Current assignee: Changzhou Hengdun Machinery Technology Co ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-01-12
Anticipated expiration: 2033-08-07

Abstract

The utility model relates to the technical field of electric hand drills, in particular to a mining explosion-proof electric hand drill. The explosion-proof electric hand drill comprises a hollow explosion-proof shell, wherein a motor, a stepless speed regulator and a battery assembly are arranged in the inner cavity of the explosion-proof shell; the motor is arranged at the upper part of the inner cavity of the flameproof shell, the motor is respectively connected with an electric drill chuck and a fan at the front end and the rear end of the motor through a linkage rotating shaft, the electric drill chuck is arranged at the front side of the flameproof shell, and the fan is arranged at the rear side of the flameproof shell; the stepless speed regulator is arranged below the motor, and the flameproof shell is provided with a speed regulating button and a direction changing button which are connected with the stepless speed regulator; the battery assembly is arranged at the lower part of the inner cavity of the explosion-proof shell and is electrically connected with the motor and the stepless speed regulator through an electric lead. The electric hand drill provided by the utility model has good explosion-proof performance, high safety performance and convenient carrying and operation, and can effectively solve the technical problem that the conventional electric hand drill cannot realize explosion-proof and is not suitable for underground use.

Description

Explosion-proof electric hand drill for mine

Technical Field

The utility model relates to the technical field of electric hand drills, in particular to a mining explosion-proof electric hand drill.

Background

In the underground construction process of the coal mine, a hand electric drill is commonly used, and the hand electric drill is a drilling tool which uses an alternating current power supply or a direct current battery as power and is one of hand-held electric tools. The electric hand drill can be used for forming holes on objects or walls according to different functions of parts mounted on the electric drill clamp, can also be used as a tool for mounting or dismounting parts such as screws, and is convenient to carry, and workers can operate by only holding the electric hand drill and starting an electric hand drill switch, so that manpower and material resources are saved.

Conventional electric drills do not have explosion-proof and explosion-proof functions, and in the using process of the electric drill, the electric drill is aged due to lines and overlong in working time, so that the conditions of short circuit, spark or explosion are easily caused by overhigh temperature of an internal battery or a motor. Because of the complexity and inflammability and explosiveness of the underground environment of the coal mine, if a conventional common electric hand drill is used, serious safety accidents under the coal mine can be caused once short circuit or explosion occurs.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the mining explosion-proof electric hand drill which has good explosion-proof performance, high safety performance and convenient carrying and operation, and can effectively solve the technical problems that the conventional electric hand drill cannot realize explosion-proof and is not suitable for underground use.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a mining explosion-proof electric hand drill, which comprises a hollow explosion-proof shell, wherein a motor, a stepless speed regulator and a battery assembly are arranged in an inner cavity of the explosion-proof shell;

the motor is arranged at the upper part of the inner cavity of the flameproof shell, the motor is respectively connected with an electric drill chuck and a fan at the front end and the rear end of the motor through a linkage rotating shaft, the electric drill chuck is arranged at the front side of the flameproof shell, and the fan is arranged at the rear side of the flameproof shell;

the stepless speed regulator is arranged below the motor, and the flameproof shell is provided with a speed regulating button and a direction changing button which are connected with the stepless speed regulator;

the battery assembly is arranged at the lower part of the inner cavity of the explosion-proof shell and is electrically connected with the motor and the stepless speed regulator through an electric lead.

Further, the outside cover on flameproof housing upper portion is equipped with hollow protection casing, plays protection safety effect, and the inside of protection casing is located to the fan, and the front port department of protection casing is connected with the buckle between the electric drill chuck, and the flameproof housing stretches out the lower port of protection casing, is equipped with a plurality of louvre on the lateral wall of protection casing for improve the radiating effect of motor, supplementary motor heat dissipation and the ventilation effect that improves the fan.

Further, the flameproof housing comprises a flameproof housing main body with a hollow inside, the flameproof housing main body comprises an installation cylinder, a handle part and a power supply bin which are integrally formed and distributed from top to bottom, the motor is arranged in the inner cavity of the installation cylinder, the stepless speed regulator is arranged in the handle part, and the battery assembly is arranged in the power supply bin. The user holds the handle part when using the electric hand drill, through manual the pressing speed governing button to the rotational speed size of control motor thereby control drilling rod feed rate and degree of depth.

Further, the explosion-proof shell further comprises an explosion-proof front end cover, an explosion-proof rear end cover and an explosion-proof bottom plate, openings are formed in the front end and the rear end of the mounting cylinder, the explosion-proof front end cover and the explosion-proof rear end cover are respectively sealed at the front port and the rear port of the mounting cylinder, the motor inside the mounting cylinder is isolated from the outside to improve the explosion-proof performance, the linkage rotating shaft penetrates through the explosion-proof front end cover and the explosion-proof rear end cover and then is respectively connected with an electric drill chuck and a fan, and the explosion-proof bottom plate is detachably connected with the bottom end of the power supply bin so that a battery assembly is mounted in the power supply bin, and meanwhile, the battery assembly is insulated from the outside to improve the explosion-proof performance.

Further, the outer surface of the mounting cylinder is provided with a plurality of heat dissipation fins in a surrounding mode, so that the heat dissipation effect of the motor is improved, and the motor is prevented from generating high temperature during operation.

Further, be equipped with the lug on the medial surface of installation section of thick bamboo, be equipped with mounting panel and snap ring on the medial surface of handle portion, stepless speed regulator butt in the upside of mounting panel and fixed connection between the lug for improve the steadiness of being connected between stepless speed regulator and the explosion-proof housing, the joint has wire to wear to connect in the snap ring, wears to establish the electrical conductor in the wire to wear to connect, is used for improving the regularity that the electrical conductor distributes.

Further, a rotating speed gear switch is arranged above the flameproof shell and penetrates through the top of the protective cover, the rotating speed gear switch is electrically connected with the stepless speed regulator and the battery assembly respectively, and the maximum rotating speed of the motor can be changed by adjusting the gear of the rotating speed gear switch.

Further, the electric drill chuck is internally provided with a three-jaw self-locking chuck linked with the linked rotating shaft, and the electric drill chuck can be automatically opened and closed and is used for replacing, clamping and locking drill rods of different types so as to meet actual drilling requirements.

Further, an explosion-proof charging plug is inserted on the side surface of the lower portion of the explosion-proof shell and is electrically connected with the battery assembly, and the explosion-proof charging plug is used for being electrically connected with an external power supply to charge the battery assembly.

The beneficial effects of the utility model are as follows:

the mining explosion-proof electric hand drill provided by the utility model has good explosion-proof performance, high safety performance and convenient carrying and operation, adopts the explosion-proof housing as a main housing structure, and arranges the motor, the stepless speed regulator and the battery assembly inside the explosion-proof housing, so that the components which possibly generate short-circuit spark or explosion are isolated from the external mine environment, and the dangerous conditions such as fire, explosion and the like in the mine caused by circuit faults, explosion and the like of the electric hand drill are avoided; the electric drill chuck and the fan realize synchronous linkage with the motor through the linkage rotating shaft, and the structure can save space and improve heat dissipation efficiency. When the electric hand drill works, the electric drill chuck and the fan are driven by the motor to synchronously rotate, so that the electric hand drill works and synchronously cools and dissipates heat by the fan. The electric drill chuck is used for clamping drill rods of different types, the rotating speed of the motor can be controlled through the stepless speed regulator, the rotating speed of the motor can be changed in real time through manually changing the force of pressing the speed regulating button, so that the rotating speed of the drill rod can be flexibly controlled, the forward and reverse rotating directions of the motor can be regulated through pressing the direction changing button, and the drill rod can be easily withdrawn by using the direction changing button to change direction and reverse rotation if the drill rod is clamped.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a front view of a mining flame-proof electric hand drill of the present utility model;

FIG. 2 is a right side view of the mining flame-proof electric hand drill of the present utility model;

FIG. 3 is a schematic cross-sectional view taken along the line "A-A" in FIG. 2;

fig. 4 is a schematic diagram of the internal structure of the mining explosion-proof electric hand drill with part of the protective cover removed;

FIG. 5 is a schematic view of an exploded view of the electric hand drill of FIG. 4;

FIG. 6 is a schematic view of the structure of the flameproof housing of the present utility model;

fig. 7 is a schematic structural view of the main body of the flameproof housing of the present utility model.

The reference numerals in the figures illustrate: 1. an explosion-proof housing; 11. an explosion-proof housing main body; 111. a mounting cylinder; 112. a handle portion; 113. a power supply bin; 114. a heat radiation fin; 115. a bump; 116. a mounting plate; 117. a clasp; 12. an explosion-proof front end cover; 13. a flameproof rear end cover; 14. an explosion-proof bottom plate; 2. a motor; 21. a linkage rotating shaft; 3. a stepless speed regulator; 31. a speed regulating button; 32. a direction-changing button; 4. a battery assembly; 41. an electrical lead; 5. an electric drill chuck; 51. three-jaw self-locking chuck; 6. a fan; 7. a protective cover; 71. a heat radiation hole; 8. a wire threading head; 9. a rotational speed gear switch; 10. explosion-proof charging plug.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present utility model with specific examples. While the description of the utility model will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation.

In the description of the present embodiment, it should be noted that, directions or positional relationships indicated by terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "front", "rear", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience in describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element referred to has a specific direction, is configured and operated in a specific direction, and therefore, should not be construed as limiting the present utility model.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, in one embodiment of the present utility model, a mining explosion-proof electric hand drill is provided, which includes a hollow explosion-proof housing 1 as a main housing structure, wherein a motor 2, a stepless speed regulator 3 and a battery assembly 4 are installed in an inner cavity of the explosion-proof housing 1, and these components which may generate short-circuit spark or explosion are isolated from an external mine environment, so as to avoid occurrence of dangerous situations such as fire, explosion and the like in the mine caused by circuit failure, explosion and the like of the electric hand drill. The motor 2 is arranged on the upper part of the inner cavity of the flameproof housing 1, the motor 2 is respectively and synchronously connected with the electric drill chuck 5 and the fan 6 at the front end and the rear end of the motor through the linkage rotating shaft 21, the electric drill chuck 5 is arranged on the front side of the flameproof housing 1 and used for clamping drill rods of different types, the fan 6 is arranged on the rear side of the flameproof housing 1, not only can space be saved, but also the heat dissipation efficiency can be improved, and the electric drill chuck 5 and the fan 6 are driven to synchronously rotate during the operation of the motor 2, so that the electric drill is synchronously cooled and dissipated by the fan 6 during the operation of an electric hand drill. The stepless speed regulator 3 is arranged below the motor 2, and the flameproof shell 1 is provided with a speed regulating button 31 and a direction changing button 32 which are connected with the stepless speed regulator 3. The battery assembly 4 is arranged at the lower part of the inner cavity of the flameproof housing 1 and is electrically connected with the motor 2 and the stepless speed regulator 3 through an electric lead 41. The rotating speed of the motor 2 can be controlled through the stepless speed regulator 3, the rotating speed of the motor is changed in real time through manually changing the force of pressing the speed regulating button 31, so that the rotating speed of the drill rod can be flexibly controlled, the forward and reverse rotating directions of the motor 2 can be regulated through pressing the direction changing button 32, and the drill rod can be easily withdrawn by using the direction changing button 32 to change direction and reverse if the drill rod is blocked.

Referring to fig. 3 and 4, the outer side of the upper part of the flameproof housing 1 is sleeved with a hollow protective cover 7, which plays a role in protection and safety, the fan 6 is arranged in the protective cover 7, the front port of the protective cover 7 is connected with the electric drill chuck 5 in a buckling manner, and the flameproof housing 1 extends out of the lower port of the protective cover 7. The protective cover 7 is made of engineering plastic materials, has high structural strength, can play a good role in protecting internal devices, and can also avoid excessively increasing the whole weight of the electric hand drill. A plurality of heat dissipation holes 71 are formed in the side wall of the protective cover 7 and used for improving the heat dissipation effect of the motor, assisting the heat dissipation of the motor and improving the ventilation effect of the fan. Both the governor button 31 and the direction change button 32 extend out of the protective cover 7. The protective cover 7 can adopt an up-down involution splicing structure or a left-right involution symmetrical splicing structure.

Referring to fig. 3 to 7, the flameproof housing 1 includes a flameproof housing body 11, a flameproof front end cap 12, a flameproof rear end cap 13, and a flameproof bottom plate 14, which are hollow inside. The flameproof housing main body 11 comprises an installation cylinder 111, a handle part 112 and a power supply bin 113 which are integrally formed and distributed from top to bottom, the motor 2 is arranged in the inner cavity of the installation cylinder 111, the stepless speed regulator 3 is arranged in the handle part 112, and the battery assembly 4 is arranged in the power supply bin 113. The user holds the handle 112 while using the electric hand drill and controls the feed speed and depth of the drill rod by manually pressing the speed adjusting button 31 to control the rotational speed of the motor 2. Openings are formed at the front end and the rear end of the mounting cylinder 111, so that the motor 2 can be conveniently mounted, the explosion-proof front end cover 12 and the explosion-proof rear end cover 13 are respectively covered at the front end opening and the rear end opening of the mounting cylinder 111, and the motor 2 inside the mounting cylinder 111 is isolated from the outside to improve the explosion-proof performance. The linkage rotating shaft 21 penetrates through the explosion-proof front end cover 12 and the explosion-proof rear end cover 13 and then is respectively connected with the electric drill chuck 5 and the fan 6, and the explosion-proof bottom plate 14 is detachably and fixedly connected with the bottom end of the power supply bin 113 so as to conveniently install the battery assembly 4 in the power supply bin 113, and meanwhile, the battery assembly 4 is insulated and isolated from the outside to improve the explosion-proof performance. The outer surface of the mounting cylinder 111 is provided with a plurality of heat dissipation fins 114 in a surrounding manner, so as to improve the heat dissipation effect of the motor and avoid the high temperature generated by the motor during operation.

Referring to fig. 3 and 7, a bump 115 is provided on the inner side surface of the mounting tube 111, a mounting plate 116 and a snap ring 117 are provided on the inner side surface of the handle portion 112, and the stepless speed regulator 3 is abutted against the upper side of the mounting plate 116 and fixedly connected between the bumps 115, so as to improve the connection stability between the stepless speed regulator 3 and the explosion-proof housing 1. The snap ring 117 is internally clamped with a wire penetrating joint 8, and the wire penetrating joint 8 is internally penetrated with an electric wire 41 for improving the distribution regularity of the electric wire.

Referring to fig. 3 and 4, a rotation speed gear switch 9 is arranged above the flameproof housing 1, the rotation speed gear switch 9 is arranged on the top of the protective cover 7 in a penetrating manner, the rotation speed gear switch 9 is respectively electrically connected with the stepless speed regulator 3 and the battery assembly 4, and the maximum rotation speed of the motor can be changed by adjusting the gear of the rotation speed gear switch 9.

Referring to fig. 3 and 5, the electric drill chuck 5 (the structure of which is omitted in the drawing) is internally provided with a three-jaw self-locking chuck 51 linked with the linked rotating shaft 21, which can be automatically opened and closed and used for replacing and clamping and locking drill rods of different types so as to meet the actual drilling requirements. The three-jaw self-locking chuck 51 is a conventional three-jaw steel clamp, and the front half of the electric drill chuck 5 can be manually screwed to adjust the opening or closing position of the three-jaw steel clamp, so as to clamp or loosen a drill rod, and the part is a relatively mature technology and is not described herein.

Referring to fig. 4 and 5, an explosion-proof charging plug 10 is inserted on the lower side of the explosion-proof housing 1, the explosion-proof charging plug 10 is electrically connected with the battery assembly 4, and the explosion-proof charging plug 10 is used for electrically connecting an external power source to charge the battery assembly 4.

While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the utility model with reference to specific embodiments, and it is not intended to limit the practice of the utility model to those descriptions. Therefore, all technical solutions which are available to the person skilled in the art based on the prior art through logic analysis, reasoning or limited experiments according to the inventive concept are within the scope of protection defined by the claims.

Claims

1. The mining explosion-proof electric hand drill is characterized by comprising a hollow explosion-proof shell (1), wherein a motor (2), a stepless speed regulator (3) and a battery assembly (4) are arranged in an inner cavity of the explosion-proof shell (1);

the motor (2) is arranged at the upper part of the inner cavity of the flameproof housing (1), the motor (2) is respectively connected with an electric drill chuck (5) and a fan (6) at the front end and the rear end of the motor through a linkage rotating shaft (21), the electric drill chuck (5) is arranged at the front side of the flameproof housing (1), and the fan (6) is arranged at the rear side of the flameproof housing (1);

the stepless speed regulator (3) is arranged below the motor (2), and the flameproof shell (1) is provided with a speed regulating button (31) and a turning button (32) which are connected with the stepless speed regulator (3);

the battery assembly (4) is arranged at the lower part of the inner cavity of the explosion-proof housing (1) and is electrically connected with the motor (2) and the stepless speed regulator (3) through an electric lead (41).

2. The mining explosion-proof electric hand drill according to claim 1, wherein the outer side of the upper portion of the explosion-proof housing (1) is sleeved with a hollow protective cover (7), a fan (6) is arranged in the protective cover (7), the front port of the protective cover (7) is connected with an electric drill chuck (5) in a buckling manner, the explosion-proof housing (1) extends out of the lower port of the protective cover (7), and a plurality of radiating holes (71) are formed in the side wall of the protective cover (7).

3. The mining flame-proof electric hand drill according to claim 1, characterized in that the flame-proof shell (1) comprises a flame-proof shell main body (11) with a hollow inside, the flame-proof shell main body (11) comprises an installation cylinder (111), a handle part (112) and a power supply bin (113) which are integrally formed and distributed from top to bottom, the motor (2) is arranged in an inner cavity of the installation cylinder (111), the stepless speed regulator (3) is arranged in the handle part (112), and the battery assembly (4) is arranged in the power supply bin (113).

4. The mining flame-proof electric hand drill according to claim 3, wherein the flame-proof shell (1) further comprises a flame-proof front end cover (12), a flame-proof rear end cover (13) and a flame-proof bottom plate (14), openings are formed in the front end and the rear end of the mounting cylinder (111), the flame-proof front end cover (12) and the flame-proof rear end cover (13) are respectively covered at the front end opening and the rear end opening of the mounting cylinder (111), the linkage rotating shaft (21) penetrates through the flame-proof front end cover (12) and the flame-proof rear end cover (13) and then is respectively connected with the electric drill chuck (5) and the fan (6), and the flame-proof bottom plate (14) is detachably connected with the bottom end of the power supply bin (113).

5. A mining explosion-proof electric hand drill according to claim 3, characterized in that the outer surface of the mounting cylinder (111) is provided with a plurality of heat radiation fins (114) in a surrounding manner.

6. The mining explosion-proof electric hand drill according to claim 3, wherein the inner side surface of the mounting cylinder (111) is provided with a bump (115), the inner side surface of the handle part (112) is provided with a mounting plate (116) and a clamping ring (117), the stepless speed regulator (3) is abutted to the upper side of the mounting plate (116) and fixedly connected between the bumps (115), the clamping ring (117) is internally clamped with a wire penetrating connector (8), and the wire penetrating connector (8) is internally penetrated with an electric wire (41).

7. The mining explosion-proof electric hand drill according to claim 1, wherein a rotating speed gear switch (9) is arranged above the explosion-proof housing (1), the rotating speed gear switch (9) is arranged on the top of the protective cover (7) in a penetrating mode, and the rotating speed gear switch (9) is electrically connected with the stepless speed regulator (3) and the battery assembly (4) respectively.

8. The mining explosion-proof electric hand drill according to claim 1, wherein the electric drill chuck (5) is internally provided with a three-jaw self-locking chuck (51) which is linked with the linked rotating shaft (21).

9. The mining explosion-proof electric hand drill according to claim 1, wherein an explosion-proof charging plug (10) is inserted on the side surface of the lower part of the explosion-proof housing (1), and the explosion-proof charging plug (10) is electrically connected with the battery assembly (4).