CN112659384A

CN112659384A - Indoor drilling machine capable of automatically replacing drill bit in lifting mode

Info

Publication number: CN112659384A
Application number: CN202110041833.2A
Authority: CN
Inventors: 朱建丽
Original assignee: Hangzhou Erhui Office Appliance Co ltd
Current assignee: Hangzhou Erhui Office Appliance Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-04-16

Abstract

The invention discloses an indoor drilling machine capable of automatically replacing a drill bit in a lifting type, which comprises a machine shell, wherein a lifting positioning cavity with an upward opening is arranged on the right side of the machine shell, a replacing and positioning mechanism for controlling lifting positioning and replacing the drill bit during drilling is arranged in the lifting positioning cavity, a positioning support with an upper end extending out of the cavity and slidably connected with the cavity wall of the lifting positioning cavity is arranged in the lifting positioning cavity, a lifting groove with a leftward opening is arranged at the left end of the positioning support, the replacing and positioning mechanism in the device can automatically replace the drill bit when the drill bit needs to be replaced when a target material is changed during drilling, can effectively perform lifting positioning during drilling, can complete high-position and low-position work, thereby avoiding workers from climbing up and down, wherein after the drilling mechanism can be automatically calibrated, positioning and drilling are performed to further ensure that drilling work is smoothly completed, so that a plurality of fussy and dangerous works are safely and, thereby ensuring the working quality and efficiency.

Description

Indoor drilling machine capable of automatically replacing drill bit in lifting mode

Technical Field

The invention relates to the field of drilling, in particular to an indoor drilling machine capable of automatically replacing a drill bit in a lifting mode.

Background

In the recent drilling equipment, there are various drilling machines adapted to various drilling operations, which use a tool harder and sharper than the object to leave a cylindrical hole or hole in the object by means of rotary cutting or rotary pressing.

But most all are that the manpower is handheld, just need to make the workman climb up and climb down when needing to adapt to different height, can be very difficult unstability in the off-ground position location moreover very dangerous, still communicate the position drilling, because its inside material becomes festival to need for it also need be up and down many times to replace with changing the drill bit, make the work progress become very loaded down with trivial details.

Disclosure of Invention

The invention aims to solve the technical problem of providing an indoor drilling machine capable of automatically replacing a drill bit in a lifting manner, and the indoor drilling machine can be used for overcoming the problems.

The invention is realized by the following technical scheme.

The invention relates to a lifting type indoor drilling machine capable of automatically replacing a drill bit, which comprises a machine shell, wherein a lifting positioning cavity with an upward opening is arranged on the right side of the machine shell, a replacing positioning mechanism for controlling lifting positioning and replacing the drill bit during drilling is arranged in the lifting positioning cavity, a positioning support with an upper end extending out of the cavity and slidably connected with the cavity wall of the lifting positioning cavity is arranged in the lifting positioning cavity, a lifting groove with a leftward opening is arranged at the left end of the positioning support, a lifting body slidably connected with the cavity wall of the lifting positioning cavity is arranged in the lifting groove, a friction groove with a leftward opening is arranged on the left end face of the lifting body, a drilling mechanism for positioning and drilling is arranged in the friction groove, the replacing positioning mechanism further comprises a positioning driven cavity which is arranged in the right cavity wall of the lifting positioning cavity and is communicated with the lifting driven cavity, a lifting driving cavity communicated with the cavity wall of the lifting driven cavity is arranged in the left cavity below the positioning driven cavity, a, the left side of the lifting driving cavity is also provided with a drill bit cavity communicated with the lifting driving cavity, the right cavity wall of the positioning driven cavity is fixedly provided with a positioning driving motor, the left end surface of the positioning driving motor is rotatably connected with a lifting driving shaft of which the left end passes through the lifting driving cavity and extends into the left cavity wall of the lifting driving cavity, the right end of the lifting driving shaft is fixedly connected with a positioning driving gear, the left end of the lifting driving shaft is also fixedly connected with a driving bevel gear, the left end surface of the lifting driving shaft is also fixedly connected with a replacement driving gear, the upper end of the positioning driven cavity is provided with a positioning driven shaft of which the end extends into the lifting positioning cavity, the right end surface of the positioning driven shaft is fixedly connected with the positioning driving gear, the left end of the positioning driven shaft is frictionally connected with a positioning friction screw rod sleeve, the drill bit is characterized in that a replacement rotating shaft is arranged in the replacement action cavity, the left end of the replacement rotating shaft stretches into the drill bit cavity, a replacement rotating block connected with the replacement rotating shaft in a rotating mode is arranged in the right end face of the replacement rotating shaft, a replacement action spring is fixedly connected to the right end face of the replacement rotating block, the other end of the replacement action spring is fixed to the wall of the replacement action cavity, a replacement electromagnet is fixedly arranged on the wall of the right cavity of the replacement action cavity, and the right end of the replacement rotating shaft is fixedly connected with a replacement driven wheel meshed with.

Furthermore, a replacing rotary table is fixed on the left end face of the replacing rotary shaft, five drill bit grooves which are communicated with the left and right rotary shafts and have openings at the upper ends are arranged on the replacing rotary table, drill bit clamping cavities communicated with the drill bit grooves are arranged in the front and rear cavity walls of the drill bit grooves, drill bit pins which are rotatably connected with the left and right cavity walls of the drill bit clamping cavities are arranged at the lower ends of the drill bit clamping cavities, drill bit clamps are fixedly connected to the drill bit pins, drill bit torsion springs are fixed in the drill bit pins, the other ends of the drill bit torsion springs are fixedly connected to the lower ends of the drill bit clamps, a lifting rotary shaft with the rear end extending into the lifting driving cavity is rotatably connected to the front and rear cavity walls of the lifting rotary cavity, a lifting rotary gear is fixedly connected to the rear end of the lifting rotary shaft, a lifting bevel gear meshed with the driving bevel gear is fixed to the front end, the rear end of the lifting driven rotating shaft is in splined connection with a sliding gear meshed with the lifting rotating gear, a sliding gear groove with a backward opening is formed in the rear end face of the sliding gear, a sliding gear block is arranged in the sliding gear groove, a sliding gear spring is fixedly connected to the rear end face of the sliding gear block, the other end of the sliding gear spring is fixed to the rear end face of the lifting control cavity, and a lifting electromagnet is fixed to the rear cavity wall of the lifting control cavity.

Furthermore, a power belt groove is arranged at the front end of the lifting driven rotating shaft, a lifting belt is connected in the power belt groove in a friction mode, a lifting wheel cavity with an opening at the right end is arranged at the upper end of the positioning support, a lifting wheel shaft is arranged in the lifting wheel cavity and is rotationally connected with the front cavity wall and the rear cavity wall, a lifting wheel in friction connection with the right end face of the lifting body is fixed on the lifting wheel shaft, a lifting driven belt groove is arranged at the front end of the lifting wheel shaft, the lifting belt is connected in the lifting driven belt groove in a friction mode, a locking cavity communicated with the lifting wheel cavity is arranged in the cavity wall above the lifting groove, a lifting locking block with a cavity extending out of the left end is arranged in the locking cavity, a locking spring is fixedly connected to the right end face of the lifting locking block, the other end of the locking spring is fixed on the right cavity wall of, the left end of the button is fixedly connected with the stop pull rope.

Furthermore, the drilling mechanism also comprises a drilling positioning body which is in friction connection with the front wall of the friction groove and the left end of which extends out of the cavity, a positioning rotating wheel cavity with a rightward opening is arranged in the right end face of the drilling positioning body, a positioning motor is arranged in the front cavity wall of the positioning rotating wheel cavity, the rear end face of the positioning motor is in power connection with a positioning rotating shaft, the positioning rotating shaft is fixedly connected with a positioning rotating wheel in friction connection with the right cavity wall of the friction groove, a replacement cavity with a left cavity wall communicated with the outside and a downward opening is arranged in the left end face of the drilling positioning body, a drilling cavity communicated with the replacement cavity is arranged in the right cavity wall of the replacement cavity, a drill bit control pull rope with a left end extending into the replacement cavity is arranged in the drilling cavity, a drilling driving cavity with a leftward opening is arranged in the left end face of the drill bit control, the drill bit piece intracavity is equipped with the left end and passes drilling drive chamber stretches into the drill bit piece of replacement intracavity, drill bit piece right-hand member face rotates and is connected with the drill bit commentaries on classics piece, drill bit commentaries on classics piece right-hand member face fixedly connected with drill bit piece spring bolt goes up the drill bit piece spring other end and fixes on the wall of drill bit piece chamber right side, drill bit commentaries on classics piece right-hand member face fixedly connected with drill bit control stay cord.

Furthermore, a drill bit matching groove with a leftward opening is formed in the left end face of the drill bit block, a Europe drill bit magnet is arranged on the front wall of the drill bit matching groove, a drill bit control cavity communicated with the drill bit control groove is formed in the right cavity wall in the middle of the drilling driving cavity, a drilling driving motor is arranged in the right cavity wall of the drilling driving cavity, a drill bit control shaft extending into the drill bit control cavity is in power connection with the right end face of the drilling driving motor, a drill bit rope winding wheel is fixedly connected to the drill bit control shaft, a drill bit control pull rope is fixedly connected to the drill bit rope winding wheel, a drilling driving shaft is in power connection with the left end face of the drilling driving motor, a drilling driving gear is fixedly connected to the drilling driving shaft, a drill bit rotating wheel meshed with the drilling driving gear and connected with the lifting driving shaft through splines is rotatably connected to the left cavity wall below the drilling, the drill hole driving mechanism is characterized in that a self-tapping screw rod is arranged above the drilling driving cavity, the right end of the self-tapping screw rod penetrates through the drill bit control pull rope to extend into the self-tapping cavity, a drill bit self-tapping gear meshed with the drilling driving gear is fixedly connected to the self-tapping screw rod, and a self-tapping nut meshed with threads of the self-tapping screw rod is fixedly connected to the left cavity wall of the self-tapping cavity.

The invention has the beneficial effects that: the replacement positioning mechanism in the device can make when the drill bit need be changed when the target material takes place to become festival when drilling, can carry out the drill bit replacement automatically to can effectually go on the lift location when drilling, can accomplish the work of eminence and low, thereby avoid making the workman climb from top to bottom, wherein but drilling mechanism automatic calibration back, it further guarantees drilling work and accomplishes smoothly to advance line location drilling, thereby make a plurality of loaded down with trivial details dangerous work become safe automatic integration, thereby guarantee operating mass and efficiency.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic front view of an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the structure B-B in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of the structure C-C shown in FIG. 1 according to an embodiment of the present invention;

FIG. 5 is an enlarged schematic view of structure D in FIG. 1 according to an embodiment of the present invention;

fig. 6 is an enlarged schematic view of structure E in fig. 1 according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The indoor drilling machine comprises a casing 10, a lifting positioning cavity 49 with an upward opening is arranged on the right side of the casing 10, a replacing positioning mechanism 88 for controlling lifting positioning and drill bit replacement during drilling is arranged in the lifting positioning cavity 49, a positioning support 33 with an upper end extending out of the cavity and connected with the cavity wall in a sliding manner is arranged in the lifting positioning cavity 49, a lifting groove 24 with a leftward opening is arranged at the left end of the positioning support 33, a lifting body 25 connected with the cavity wall in a sliding manner is arranged in the lifting groove 24, a friction groove 23 with a leftward opening is arranged on the left end face of the lifting body 25, a drilling mechanism 89 for positioning and drilling is arranged in the friction groove 23, the replacing positioning mechanism 88 further comprises a positioning driven cavity 82 which is arranged in the right cavity wall of the lifting positioning cavity 49 and communicated with the right cavity wall, a lifting driving cavity 86 communicated with the cavity wall is arranged in the left cavity wall below the positioning driven cavity 82, the rear front wall of the lifting driving cavity 86 is internally provided with a lifting rotating cavity 43 communicated with the lifting driving cavity 86, the upper cavity wall of the lifting driving cavity is communicated with the lifting positioning cavity 49, the left side of the lifting driving cavity 86 is also provided with a drill bit cavity 17 communicated with the lifting driving cavity, the right cavity wall of the positioning driven cavity 82 is fixedly provided with a positioning driving motor 84, the left end surface of the positioning driving motor 84 is rotatably connected with a lifting driving shaft 80 of which the left end penetrates through the lifting driving cavity 86 and extends into the left cavity wall of the lifting driving cavity, the right end of the lifting driving shaft 80 is fixedly connected with a positioning driving gear 85, the left end of the lifting driving shaft 80 is also fixedly connected with a driving bevel gear 87, the left end surface of the lifting driving shaft 80 is also fixedly connected with a replacement driving gear 15, the upper end of the positioning driven cavity 82 is provided with a positioning driven shaft 83 of, location driven shaft 83 left end friction be connected with locating support 33 lower extreme threaded connection's location friction lead screw sleeve 79, be equipped with the replacement action chamber 12 of intercommunication with it in the drill bit chamber 17 right side chamber wall, it stretches into to be equipped with the left end in the replacement action chamber 12 replacement pivot 18 in the drill bit chamber 17, be equipped with the replacement commentaries on classics piece 14 of being connected with it rotation in the replacement pivot 18 right-hand member face, fixedly connected with replacement action spring 13 on the 14 right-hand member face of replacement commentaries on classics piece, the replacement action spring 13 other end is fixed replacement action chamber 12 has on the chamber wall, be fixed with replacement electro-magnet 11 on the replacement action chamber 12 right side chamber wall, replacement pivot 18 right-hand member fixedly connected with replacement drive gear 15 meshing's replacement from driving wheel 16.

Beneficially, a replacing rotary table 19 is fixed on the left end face of the replacing rotary shaft 18, five drill bit grooves 59 which are through from left to right and have open upper ends are arranged on the replacing rotary table 19, drill bit clamping cavities 56 which are communicated with the drill bit grooves 59 are arranged in the front and rear cavity walls of the drill bit grooves 59, drill bit pins 58 which are rotatably connected with the left and right cavity walls of the drill bit clamping cavities 56 are arranged at the lower ends of the drill bit clamping cavities 56, a drill bit clamp 57 is fixedly connected with the upper ends of the drill bit pins 58, a drill bit torsion spring 55 is fixed in the drill bit pins 58, the other end of the drill bit torsion spring 55 is fixed at the lower end of the drill bit clamp 57, a lifting rotary shaft 45 whose rear end extends into the lifting driving cavity 86 is rotatably connected with the front and rear cavity walls of the lifting rotary chamber 43, a lifting rotary gear 44 is fixedly connected with the rear end of the lifting rotary shaft 45, a lifting bevel, lift control chamber 37 is equipped with the lift driven spindle 47 who stretches into in its front chamber wall, lift driven spindle 47 rear end splined connection have with lift rotating gear 44 meshed sliding gear 41, be equipped with the backward sliding gear groove 42 of opening in the sliding gear 41 rear end face, be equipped with sliding gear piece 40 in the sliding gear groove 42, fixedly connected with sliding gear spring 38 on the sliding gear piece 40 rear end face, the sliding gear spring 38 other end is fixed on the lift control chamber 37 rear end face, lift control chamber 37 rear chamber wall is fixed with lift electro-magnet 29.

Beneficially, a power belt groove 48 is arranged at the front end of the lifting driven rotating shaft 47, a lifting belt 50 is connected in the power belt groove 48 in a friction manner, a lifting wheel cavity 34 with an opening at the right end is arranged at the upper end of the positioning support 33, the lifting wheel cavity 34 is provided with a lifting wheel shaft 36 with front and rear cavity walls rotationally connected, a lifting wheel 35 in friction connection with the right end face of the lifting body 25 is fixed on the lifting wheel shaft 36, a lifting driven belt groove 31 is arranged at the front end of the lifting wheel shaft 36, the lifting belt 50 is connected in friction manner in the lifting driven belt groove 31, a locking cavity 30 communicated with the lifting belt 50 is arranged in the cavity wall above the lifting groove 24, a lifting stop block 26 with a left end extending out of the cavity is arranged in the locking cavity 30, a stop spring 28 is fixedly connected to the right end face of the lifting stop block 26, the other end of the stop spring 28 is fixed to the right cavity, the right end face of the positioning bracket 33 is fixedly connected with a button 32, and the left end of the button 32 is fixedly connected with the stop pull rope 27.

Beneficially, the drilling mechanism 89 further includes a drilling positioning body 22 frictionally connected to the front wall of the friction groove 23 and having a left end extending out of the cavity, a positioning rotating wheel cavity 52 with a right opening is provided in the right end face of the drilling positioning body 22, a positioning motor 51 is provided in the front cavity wall of the positioning rotating wheel cavity 52, a positioning rotating shaft 54 is dynamically connected to the rear end face of the positioning motor 51, a positioning rotating wheel 53 frictionally connected to the right cavity wall of the friction groove 23 is fixedly connected to the positioning rotating shaft 54, a replacement cavity 20 with a left cavity wall communicated with the outside and a downward opening is provided in the left end face of the drilling positioning body 22, a positioning rubber 21 is provided at the left opening of the replacement cavity 20, a drilling cavity 75 communicated with the right cavity wall of the replacement cavity 20 is provided in the right cavity wall, a drill bit control pulling rope 69 with a left end extending into the replacement cavity 20 is provided in the drilling cavity 75, a drilling driving cavity 60 with a, a drill bit block cavity 71 communicated with the drilling driving cavity 60 is formed in the right cavity wall below the drilling driving cavity 60, the left end of the drill bit block cavity 71 is arranged to penetrate through the drilling driving cavity 60 and stretch into the drill bit block 90 in the replacing cavity 20, the right end face of the drill bit block 90 is rotatably connected with a drill bit rotating block 73, the other end of the drill bit block spring 74 on the drill bit rotating block 73 is fixedly connected with a drill bit spring 74 bolt is fixed on the right cavity wall of the drill bit block cavity 71, and the right end face of the drill bit rotating block 73 is fixedly connected with a drill bit control pull rope 69.

Beneficially, a drill bit fitting groove 66 with a leftward opening is formed in the left end surface of the drill bit block 90, a european drill bit magnet 39 is arranged on the front wall of the drill bit fitting groove 66, a drill bit control cavity 68 communicated with the drill bit control cavity is formed in the right cavity wall of the middle portion of the drilling drive cavity 60, a drilling drive motor 62 is arranged in the right cavity wall of the drilling drive cavity 60, a drill bit control shaft 72 extending into the drill bit control cavity 68 is dynamically connected to the right end surface of the drilling drive motor 62, a drill bit rope winding wheel 70 is fixedly connected to the drill bit control shaft 72, a drill bit control pull rope 69 is fixedly connected to the drill bit rope winding wheel 70, a drilling drive shaft 63 is dynamically connected to the left end surface of the drilling drive motor 62, a drilling drive gear 64 is fixedly connected to the drilling drive shaft 63, a drill bit rotating wheel 65 meshed with the drilling drive gear 64 and splined with the lifting drive shaft 80 is rotatably, a self-tapping cavity 76 with a leftward opening is arranged in the right cavity wall above the drilling cavity 75, a self-tapping screw 77 with a right end penetrating through the drill control pull rope 69 and extending into the self-tapping cavity 76 is arranged above the drilling driving cavity 60, a drill self-tapping gear 61 meshed with the drilling driving gear 64 is fixedly connected to the self-tapping screw 77, and a self-tapping nut 78 meshed with the self-tapping screw 77 in a threaded manner is fixedly connected to the left cavity wall of the self-tapping cavity 76.

Sequence of mechanical actions of the whole device:

1: in the initial state, the positioning bracket 33 is positioned at the right end of the lifting positioning cavity 49, the lifting body 25 is positioned below the lifting groove 24, the drilling positioning body 22 is positioned below the friction groove 23, so that the replacement cavity 20 is communicated with the drill bit cavity 17, the replacement rotary disc 19 extends into the replacement cavity 20, the lifting electromagnet 29 attracts the sliding gear 41, so that the sliding gear 41 is disengaged from the lifting rotary gear 44, the replacement electromagnet 11 attracts the replacement rotary shaft 18, so that the replacement driven wheel 16 is disengaged from the replacement driving gear 15, so that the replacement rotary disc 19 is positioned at the right end of the replacement cavity 20, the right end of the cutter head in the drill bit groove 59 on the replacement rotary disc 19 is positioned in the drill bit matching groove 66, so that the drill bit magnet 39 attracts the drill bit control pull rope 69, and the drill bit rolling wheel 70 rolls up the drill bit control pull rope 69, so that the drill bit 90 is positioned at the right end.

2: when the drilling machine needs to work, the positioning motor 51 works to drive the positioning rotating shaft 54 to rotate, so that the positioning rotating shaft 54 drives the positioning rotating wheel 53 to rotate, the positioning rotating wheel 53 is further made to rub against the right cavity wall of the friction groove 23, the drilling positioning body 22 is driven to move up and down in the friction groove 23, the drilling positioning body 22 is stopped at a position needing to drill, the replacement cavity 20 is far away from the drill head cavity 17 in the process, so that the drill head matched with the drill head matching groove 66 is taken out of the drill head groove 59, in addition, the lifting electromagnet 29 can stop working, the sliding gear 41 is meshed with the lifting rotating gear 44, then the positioning driving motor 84 is started to drive the lifting driving shaft 80, the driving bevel gear 87, the replacement driving gear 15, the positioning driving gear 85, the positioning driven gear 81 and the positioning driven shaft 83 to rotate, and the positioning support 33 is positioned at the right end of the lifting, the positioning friction screw rod sleeve 79 can not be driven to move, so that the positioning friction screw rod sleeve 79 and the positioning driven shaft 83 are in friction slip, meanwhile, the driving bevel gear 87 rotates to drive the lifting bevel gear 46, the lifting rotating shaft 45, the lifting rotating gear 44, the sliding gear 41 and the lifting driven rotating shaft 47 to rotate, the lifting driven rotating shaft 47 rotates to drive the lifting wheel shaft 36 and the lifting wheel 35 to rotate through the lifting belt 50, so that the lifting wheel 35 and the cavity wall of the lifting groove 24 are in friction, the lifting body 25 and the drilling positioning body 22 are driven to ascend, the lifting body 25 stops ascending when ascending to the upper end of the lifting groove 24 and the lifting stop block 26 stops ascending, at the moment, the lifting stop block 26 ejects out of the cavity to clamp the lifting body 25 above the lifting groove 24, then the positioning driving motor 84 stops working, the lifting electromagnet 29 works again to attract the sliding gear 41, and the lifting rotating gear, then, the drill hole positioning body 22 moves in the friction groove 23 to determine the drill hole position at a higher position, and when the drill hole positioning body needs to be lowered, the button 32 is pressed to pull the stopper rope 27 tightly, so that the lifting stopper 26 is pulled into the stopper cavity 30, the lifting body 25 is released, and the lifting body 25 is lowered and reset in the lifting groove 24.

3: when the drilling positioning body 22 stays at a position to be drilled, the drilling driving motor 62 works to drive the drilling driving shaft 63, the drilling driving gear 64, the drill bit rotating wheel 65 and the drill bit block 90 to rotate, so that the drill bit block 90 drives the drill bit to start rotating, meanwhile, the drilling driving gear 64 drives the drill bit tapping gear 61 and the tapping screw 77 to rotate, the tapping screw 77 is driven by the tapping nut 78 to rotate, the right end of the drill bit control pull rope 69 moves to the left side of the drilling body cavity 75 to drill, meanwhile, the drilling driving motor 62 also drives the drill bit control shaft 72 and the drill bit rope winding wheel 70 to rotate, so that the drill bit control pull rope 69 is loosened by the drill bit rope winding wheel 70, so that the drill bit block 90 and the drill bit rotating block 73 move to the left under the action of the drill bit block spring 74 to drill in a deeper hole, in the process, the positioning driving motor 84 works in a reverse direction, so that, the positioning support 33, the lifting body 25 and the drilling positioning body 22 are driven to move leftwards, the drilling positioning body 22 is enabled to be more closely matched with the cavity wall, when drilling is finished or a drill bit needs to be changed, the positioning driving motor 84 rotates forwards, the positioning support 33, the lifting body 25 and the drilling positioning body 22 move rightwards, the contact between the drilling positioning body 22 and the cavity wall is released, meanwhile, the drilling driving motor 62 rotates backwards, the self-tapping screw 77 moves rightwards under the action of the self-tapping nut 78, the drill bit control pull rope 69 resets towards the drilling cavity 75, meanwhile, the drill bit control pull rope 69 is tightly wound by the drill bit rope winding wheel 70, the drill bit block 90 returns to the cavity 71 of the drill bit block, the drilling driving motor 62 stops working, then the lifting body 25 is enabled to be at the initial position, the drilling positioning body 22 moves downwards to the upper end of the machine shell 10, the replacement cavity 20 is enabled to be communicated with the drill bit cavity 17 again, and the, at this time, the drill bit in the drill bit matching groove 66 returns to the drill bit groove 59 again, then the replacement electromagnet 11 stops working, the replacement rotating shaft 18 and the replacement rotating block 14 move leftwards under the action of the replacement action spring 13, so that the replacement rotating disc 19 and the replacement driven wheel 16 are driven to move leftwards, the replacement rotating disc 19 pulls out the drill bit from the drill bit matching groove 66, the replacement driven wheel 16 is meshed with the replacement driving gear 15, at this time, the positioning driving motor 84 rotates reversely, the replacement driving gear 15 drives the replacement driven wheel 16, the replacement rotating shaft 18 and the replacement rotating disc 19 to rotate, so that the replacement rotating disc 19 rotates the required drill bit to the replacement cavity 20 to be matched with the drill bit matching groove 66, then the replacement electromagnet 11 works, the replacement rotating shaft 18 is attracted, the replacement rotating disc 19 puts the new drill bit into the drill bit matching groove 66, and the replacement driven wheel 16 is disengaged from the replacement, and simultaneously the positioning drive motor 84 stops rotating to complete the bit replacement work.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an indoor drilling machine of automatic change drill bit of over-and-under type, includes the casing, its characterized in that: the right side of the shell is provided with a lifting positioning cavity with an upward opening, the lifting positioning cavity is internally provided with a replacement positioning mechanism for controlling lifting positioning and bit replacement during drilling, the lifting positioning cavity is internally provided with a positioning support with an upper end extending out of the cavity and a cavity wall sliding connection with the positioning support, the left end of the positioning support is provided with a lifting groove with a left opening, the lifting groove is internally provided with a lifting body sliding connection with the cavity wall, the left end surface of the lifting body is provided with a friction groove with a left opening, the friction groove is internally provided with a drilling mechanism for positioning drilling, the replacement positioning mechanism further comprises a positioning driven cavity which is arranged in the right cavity wall of the lifting positioning cavity and is communicated with the right cavity wall, the left cavity wall below the positioning driven cavity is internally provided with a lifting driving cavity communicated with the cavity wall, the rear front wall of the lifting driving cavity is internally provided with a lifting rotating cavity communicated with the, the left side of the lifting driving cavity is also provided with a drill bit cavity communicated with the lifting driving cavity, the right cavity wall of the positioning driven cavity is fixedly provided with a positioning driving motor, the left end surface of the positioning driving motor is rotatably connected with a lifting driving shaft of which the left end passes through the lifting driving cavity and extends into the left cavity wall of the lifting driving cavity, the right end of the lifting driving shaft is fixedly connected with a positioning driving gear, the left end of the lifting driving shaft is also fixedly connected with a driving bevel gear, the left end surface of the lifting driving shaft is also fixedly connected with a replacement driving gear, the upper end of the positioning driven cavity is provided with a positioning driven shaft of which the end extends into the lifting positioning cavity, the right end surface of the positioning driven shaft is fixedly connected with the positioning driving gear, the left end of the positioning driven shaft is frictionally connected with a positioning friction screw rod sleeve, the drill bit is characterized in that a replacement rotating shaft is arranged in the replacement action cavity, the left end of the replacement rotating shaft stretches into the drill bit cavity, a replacement rotating block connected with the replacement rotating shaft in a rotating mode is arranged in the right end face of the replacement rotating shaft, a replacement action spring is fixedly connected to the right end face of the replacement rotating block, the other end of the replacement action spring is fixed to the wall of the replacement action cavity, a replacement electromagnet is fixedly arranged on the wall of the right cavity of the replacement action cavity, and the right end of the replacement rotating shaft is fixedly connected with a replacement driven wheel meshed with.

2. The indoor drill with an elevating type automatic bit exchange function as claimed in claim 1, wherein: the left end face of the replacing rotating shaft is fixedly provided with a replacing rotating disc, the replacing rotating disc is provided with five drill bit grooves which are communicated with each other and have openings at the left and right ends, the front cavity wall and the rear cavity wall of each drill bit groove are internally provided with drill bit clamping cavities communicated with the drill bit grooves, the lower ends of the drill bit clamping cavities are provided with drill bit pins which are rotatably connected with the left cavity wall and the right cavity wall of each drill bit clamping cavity, the upper ends of the drill bit pins are fixedly connected with drill bit clamps, the drill bit pins are internally fixed with drill bit torsion springs, the other ends of the drill bit torsion springs are fixedly connected with the lower ends of the drill bit clamps, the front cavity wall and the rear cavity wall of each lifting rotating cavity are rotatably connected with lifting rotating shafts with the rear ends extending into the lifting driving cavities, the rear ends of the lifting rotating shafts are fixedly connected with lifting rotating gears, the front, the rear end of the lifting driven rotating shaft is in splined connection with a sliding gear meshed with the lifting rotating gear, a sliding gear groove with a backward opening is formed in the rear end face of the sliding gear, a sliding gear block is arranged in the sliding gear groove, a sliding gear spring is fixedly connected to the rear end face of the sliding gear block, the other end of the sliding gear spring is fixed to the rear end face of the lifting control cavity, and a lifting electromagnet is fixed to the rear cavity wall of the lifting control cavity.

3. The indoor drill with an elevating type automatic bit exchange function as claimed in claim 1, wherein: the front end of the lifting driven rotating shaft is provided with a power belt groove, a lifting belt is connected in the power belt groove in a friction manner, the upper end of the positioning support is provided with a lifting wheel cavity with an opening at the right end, the lifting wheel cavity is provided with a lifting wheel shaft rotationally connected with the front cavity wall and the rear cavity wall, a lifting wheel which is in friction connection with the right end face of the lifting body is fixed on the lifting wheel shaft, the front end of the lifting wheel shaft is provided with a lifting driven belt groove, the lifting belt is connected in the lifting driven belt groove in a friction manner, a locking cavity communicated with the lifting wheel cavity is arranged above the lifting groove, a lifting locking block with a left end extending out of the cavity is arranged in the locking cavity, the right end face of the lifting locking block is fixedly connected with a locking spring, the other end of the locking spring is fixed on the right cavity wall of the locking, the left end of the button is fixedly connected with the stop pull rope.

4. The indoor drill with an elevating type automatic bit exchange function as claimed in claim 1, wherein: the drilling mechanism also comprises a drilling positioning body which is in friction connection with the front wall of the friction groove and the left end of which extends out of the cavity, a positioning rotating wheel cavity with a rightward opening is arranged in the right end face of the drilling positioning body, a positioning motor is arranged in the front cavity wall of the positioning rotating wheel cavity, a positioning rotating shaft is in power connection with the rear end face of the positioning motor, a positioning rotating wheel which is in friction connection with the right cavity wall of the friction groove is fixedly connected onto the positioning rotating shaft, a replacement cavity with a left cavity wall communicated with the outside and a downward opening is arranged in the left end face of the drilling positioning body, a drilling cavity communicated with the replacement cavity is arranged in the right cavity wall of the replacement cavity, a drill bit control pull rope with a left end extending into the replacement cavity is arranged in the drilling cavity, a drilling driving cavity with a leftward opening is arranged in the left end face of the drill bit control pull rope, a drill bit cavity communicated with the drilling driving cavity is arranged in the right, the drill bit block right end face is rotatably connected with a drill bit rotating block, the drill bit rotating block right end face is fixedly connected with a drill bit spring bolt, the other end of the drill bit spring bolt is fixed on the wall of the drill bit block cavity right cavity, and the drill bit rotating block right end face is fixedly connected with a drill bit control pull rope.

5. The indoor drill with an elevating type automatic bit exchange function as claimed in claim 1, wherein: a drill bit matching groove with a leftward opening is formed in the left end face of the drill bit block, an Europe drill bit magnet is arranged on the front wall of the drill bit matching groove, a drill bit control cavity communicated with the drill bit control groove is formed in the right cavity wall in the middle of the drilling driving cavity, a drilling driving motor is arranged in the right cavity wall of the drilling driving cavity, a drill bit control shaft extending into the drill bit control cavity is in power connection with the right end face of the drilling driving motor, a drill bit rope winding wheel is fixedly connected onto the drill bit control shaft, a drill bit control pull rope is fixedly connected onto the drill bit rope winding wheel, a drilling driving shaft is in power connection with the left end face of the drilling driving motor, a drilling driving gear is fixedly connected onto the drilling driving shaft, a drill bit rotating wheel meshed with the drilling driving gear and in splined connection with the lifting driving shaft is rotatably connected onto the left cavity wall below, the drill hole driving mechanism is characterized in that a self-tapping screw rod is arranged above the drilling driving cavity, the right end of the self-tapping screw rod penetrates through the drill bit control pull rope to extend into the self-tapping cavity, a drill bit self-tapping gear meshed with the drilling driving gear is fixedly connected to the self-tapping screw rod, and a self-tapping nut meshed with threads of the self-tapping screw rod is fixedly connected to the left cavity wall of the self-tapping cavity.