CN110405700B - Self-suction type automatic feeding drilling machine - Google Patents
Self-suction type automatic feeding drilling machine Download PDFInfo
- Publication number
- CN110405700B CN110405700B CN201910687903.4A CN201910687903A CN110405700B CN 110405700 B CN110405700 B CN 110405700B CN 201910687903 A CN201910687903 A CN 201910687903A CN 110405700 B CN110405700 B CN 110405700B
- Authority
- CN
- China
- Prior art keywords
- screw rod
- self
- holes
- priming
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 17
- 230000033001 locomotion Effects 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/11—Arrangements of noise-damping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/28—Supports; Devices for holding power-driven percussive tools in working position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a self-priming automatic feeding drilling machine, which comprises a main machine, a screw rod, a dust collecting device, a self-priming device and an automatic feeding device, wherein a motor switch is arranged on a main machine shell, and the main machine shell is clutched; the tail part of the host shell is provided with two through holes, the screw rod penetrates through the two through holes, and a feeding transmission gear is arranged on the screw rod between the two through holes; the dust collecting device is connected to the front part of the host; the self-priming device is connected to the end part of the screw rod in the same direction as the drill bit and comprises a base, a supporting rod connected with the base, and the end part of the supporting rod is connected with a sucker group; the automatic feeding device is meshed with the power output gear of the bevel gear set by the feeding transmission gear. The invention can reduce dust and noise. The invention realizes the stroke movement of the hammer head, the rotary movement of the drill bit and the directional linear movement of the host machine along the screw rod by the transmission mechanism, realizes the full-automatic operation of the punching operation, improves the punching precision and reduces the labor intensity.
Description
Technical Field
The invention relates to a punching device, in particular to a self-priming automatic feeding drilling machine for punching on shield tunnel segments.
Background
In the subway shield construction, cable lines and contact networks are drilled and erected on duct pieces, the existing working mode is that people step on a scaffold to punch holes by lifting impact drills, so that many potential safety hazards exist, labor intensity is high, drilling depth is low in a controllable degree, and dust flies.
The invention aims to provide a time-saving and labor-saving self-priming automatic feeding drilling machine, which realizes automatic drilling, improves drilling precision, avoids operation dust and reduces operation noise.
Disclosure of Invention
The invention has the following overall technical concept: a self-priming automatic feeding drilling machine comprises a main machine, a screw rod, a dust collecting device, a self-priming device and an automatic feeding device. The host shell is provided with a motor switch for clutch; the tail part of the host shell is provided with two through holes, the screw rod penetrates through the two through holes, and a feeding transmission gear is arranged on the screw rod between the two through holes. A travel switch is arranged at one side end part of the screw mounting host; the dust collecting device is connected to the front part of the main machine and comprises a horn-shaped funnel, the closing end of the funnel is fixed to the front part of the drilling machine, a chute is arranged at the edge of the opening end of the funnel, a baffle is inserted into the chute, and the baffle seals the drill bit in the funnel. The self-priming device is connected at the end part of the screw rod in the same direction as the drill bit and comprises a base, a supporting rod connected with an arc-shaped through hole is connected with a sucker group, a groove is formed in the base, the end part of the screw rod provided with a travel switch is clamped and fixed in the groove, and the sucker is connected with a vacuum pump through an air pipeline. The automatic feeding device comprises a feeding transmission gear, the feeding transmission gear is meshed with a power output gear of the bevel gear set, the bevel gear set comprises a vertical pin shaft and a horizontal pin shaft, the upper end of the vertical pin shaft is a small bevel gear, the lower end of the vertical pin shaft is fixedly connected in a clutch, the clutch is tightly attached to the transmission gear, one end of the horizontal pin shaft is a large bevel gear, the other end of the horizontal pin shaft is fixedly connected in the power output gear, and the small bevel gear and the large bevel gear are meshed with each other.
The driving gear connected with the motor is engaged with three groups of transmission gears, one group of rotation gears drives the cam mechanism to realize stroke movement of the hammer head, one group of transmission gears drives the drill bit to do rotary movement, and the other group of transmission gears drive the feeding transmission gears to move.
The distance between the motor clutch and the travel switch contact is equal to the punching depth.
The closing end of the funnel of the dust collecting device is hooked on the end part of the spring fixed on the host shell through an iron hook fixedly connected with the closing end of the funnel.
An arc-shaped supporting rod is connected to the arc-shaped through hole of the self-priming device base, and an arc-shaped sucker group is arranged at the end part of the arc-shaped supporting rod. The bottom of the groove of the base is welded with a fixed plate, two guide iron rods are welded between the side edges of the groove and the fixed plate, the guide iron rods are sleeved with a movable plate, and the fixed plate and the movable plate are provided with threaded holes. The end of the screw rod is provided with a through hole matched with the fixed plate and the movable plate.
The fixed plate and the movable plate panel are provided with scales for displaying the perforation inclination angles.
The dust collecting device is arranged at the working end of the main machine of the drilling machine, so that dust emission during drilling operation is effectively reduced, and noise generated during drilling of a drill bit is reduced. The self-priming device is connected to the end of the screw rod, so that the drilling machine can be forcefully adsorbed on the working surface, the automatic feeding device realizes the stroke motion of the hammer head through the transmission mechanism, the rotary motion of the drill bit and the directional linear motion of the host machine along the screw rod, the full-automatic operation of the punching operation is realized, the punching precision is improved, and the labor intensity is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the meshing of gears of the automatic feeding apparatus of the present invention;
FIG. 3 is a schematic view of the self-priming device of the present invention;
FIG. 4 is a schematic diagram of the groove structure of the self-priming device of the present invention;
FIG. 5 is a schematic view of the end structure of the screw of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1, the self-priming automatic feeding drilling machine comprises a drilling machine main machine 1, a screw 2, a dust collecting device, a self-priming device and an automatic feeding device. The main machine 1 is provided with a motor switch 15 and a clutch 16. The tail part of the drilling machine shell is provided with two through holes, the screw rod penetrates through the two through holes, and a feeding transmission gear 21 is arranged on the screw rod between the two through holes. The side of the screw rod 2, on which the host machine is arranged, is provided with a travel switch 22, and the distance between the clutch 16 and a contact of the travel switch 22 is equal to the punching depth. The dust collecting device is an irregular horn-shaped funnel 3, the funnel can be made of transparent plastic, the closing end of the horn-shaped funnel is sleeved on the front part of the host machine 1 through an iron hook 31 fixedly connected with the funnel, and the iron hook 31 is hooked on a circular ring of the spring 17. One end of the spring 17 is in a circular ring shape, and the other end is fixed on a protruding column 171 of the groove of the casing of the drilling machine 1. The dust collection funnel is convenient to detach, the edge of the open end of the bell mouth is provided with a chute, the baffle 32 can be inserted into the chute, and the drill bit 18 can be sealed in the funnel 3 by matching the chute with the baffle. The scraps generated during drilling operation fall into the funnel 3, so that dust emission is avoided, and noise generated during drilling of the drill bit can be reduced. Connected with the bottom of the screw rod 2 is a base 41, a groove 45 is arranged on the base 41, an arc sucking disc group 43 connected with the base 41 through an arc supporting rod is connected with a vacuum pump 5 through an air pipe, and the arc sucking disc group 43 is made of silicon rubber. The automatic feeding device comprises a feeding transmission gear 21, the feeding transmission gear is meshed with a power output gear 144 of a bevel gear set, the bevel gear set comprises a vertical pin shaft and a horizontal pin shaft, the upper end of the vertical pin shaft is a small bevel gear 142, the lower end of the vertical pin shaft is fixedly connected in a clutch 141, the clutch 141 is tightly attached to the transmission gear 14, one end of the horizontal pin shaft is a large bevel gear 143, the other end of the horizontal pin shaft is fixedly connected in the power output gear 144, and the small bevel gear 142 and the large bevel gear 143 are meshed with each other.
The driving gear 11 and three groups of transmission gears connected with the motor 10, one group of rotation gears drive the cam mechanism to realize the stroke motion of the hammer head 123, the through hole side wall of the horizontally placed gear 12 in fig. 1 is provided with an internal spline, a vertically arranged transmission pin is inserted in the through hole, the outer side wall of the lower part of the transmission pin is provided with an external spline matched with the internal spline, the upper end of the transmission pin is provided with an eccentric wheel 120, the 120 drives a connecting rod 121 to reciprocate in a cylinder 122, and compressed gas pushes the piston cylinder hammer head 123 to strike a connector 124 of a drill bit 18 at a higher impact frequency, so that the drill bit 18 is punched forwards. A set of drive gears rotate the drill bit, and gear 13 rotates the drill bit through drive bevel gears 130 and 131 which intersect each other. The other set of drive gears moves the feed drive gear 21.
As shown in fig. 2, the motor of the self-priming automatic feeding drilling machine drives four gears, wherein the gear 11 is sleeved on a main shaft of the motor and is a driving gear, and the driven gears 12, 13 and 14 are respectively meshed with the gear 11.
As shown in fig. 3, the self-priming device comprises a base 41, arc-shaped struts 421, 422, 423, 424, an arc-shaped suction cup group 43, four air tubes 44, a groove 45, two handles 46, four arc-shaped through holes 47, and four threaded posts 471. The arc suction cup group 43 is connected with the vacuum pump 5 through an air pipe. The ends of the arc-shaped supporting rods 421, 422, 423 and 424 are welded with threaded columns 471, and the threaded columns 471 are inserted into the arc-shaped through holes, so that the four arc-shaped supporting rods can move back and forth on the arc-shaped through holes. When the holes are drilled on the side and the top of the tunnel, the placement positions of the four support rods are determined according to the stress condition of the drilling machine, and after the positions are determined, the four support rods can be screwed and fixed by nuts matched with the threaded rods 471. The other end of each arc-shaped supporting rod is provided with a sucker group 43, so that the problem of unstable adsorption at the connecting joint of the tube piece can be solved.
As shown in fig. 4, the groove 45 is internally provided with a semicircular fixing plate 451 welded at the bottom of the groove, the groove is internally provided with a threaded hole 454, one ends of two guide iron sticks 453 are welded at the side edge of the groove, the other ends of the two guide iron sticks are welded on the fixing plate 451, two through holes of the semicircular movable plate 452 are sleeved on the guide iron sticks and can move back and forth on the guide iron sticks, the groove 452 is provided with a threaded hole, and the size and the position of the threaded hole are consistent with those of the threaded hole of the semicircular fixing plate 451. The semicircular fixed plate and the semicircular movable plate are provided with angle scales of 0-90 degrees along the circular arc, or common scales are engraved according to the requirement. When the screw rod 2 is fixed, the 452 is slid to the side of the groove of the fixed guide iron rod, then the threaded hole at the bottom of the screw rod is aligned with the 454, and then the 452 is slid to the position close to the screw rod 2 to fasten the screw rod by using a screw.
As shown in fig. 5, the lower end of the screw 2 is a through hole 23 with threads on the inner wall, a datum line 231 is arranged in the middle of the upper part of the through hole, when the screw is vertically perforated, the datum line 231 is aligned with the center line of 452, when the screw is diagonally perforated, the datum line is aligned with corresponding scales, and the two sides of the semicircular fixed plate and the semicircular movable plate are provided with the same scales, so that the screw is convenient for a user to use. At this time, the screw 2 is fixedly coupled to the inside of the groove 45 by a nut corresponding to the screw hole.
During punching operation, the clutch 16 is pressed, the screw 2 is rotated to enable the drilling machine 1 to descend until the drill bit 18 can be aligned with the punching position, the clutch 16 is loosened, the vacuum pump 5 is turned on, the device is adsorbed on a work pipe piece, after adsorption is stable, the switch 15 of the drilling machine is turned on, the drilling machine starts to work, the drill bit 18 rotates at a high speed, the drilling machine body starts to move along the screw 2 to the pipe piece, when the dust collection funnel 3 starts to contact the pipe piece, the spring 17 starts to be compressed, and fragments generated from the start of contact of the drill bit 18 to the end of punching fall into the dust collection funnel. When the clutch 16 contacts with the travel switch 22, namely the drilling depth is reached, the drilling machine 1 stops working under the control of the travel switch, and the gear driven by the motor still needs to rotate due to inertia; the spring in the clutch 141 is compressed, the components driven by the clutch 141, including the small bevel gear 142, the large bevel gear 143, the gear 144 and the gear nut 21, stop rotating, at this time, the drilling machine 1 does not move along the screw rod 2, and even if the drill bit continues to rotate for a period of time due to the inertia of the gear, the drilling machine does not continue to travel in the direction of the pipe piece, namely, the accurate drilling depth is ensured. At this time, the screw 2 is held by hand, the vacuum pump is turned off, the device is removed from the duct piece, the iron hook 31 of the dust collection funnel 3 is removed from the circular ring of the spring 17, the hard transparent plastic baffle 32 is pulled out, the scraps are poured out, and the hard plastic baffle 32 is inserted back into the chute; pressing the clutch 16, manually rotating the screw 2 to raise the drill to a proper position and releasing the clutch, hanging the dust collection hopper 3, and preparing for the next punching operation.
The length of the support rod is determined according to the requirement because the diameters of the shield structures are different. In the punching process, if the pipe piece connecting seams are arranged around the punching position, the position of the arc-shaped supporting rod can be properly adjusted, so that the arc-shaped sucker group avoids the connecting seams; if the sound of the drill bit part suddenly increases in the punching process, namely the drill bit 18 carelessly hits the steel bar and must be processed in time, otherwise the steel bar is damaged, the clutch 16 should be pressed immediately, at this time, the drill 1 will not move along the screw rod 2 any more, the drill bit 18 is protected from further contacting the steel bar, then the drill switch 15 is closed, after the drill bit stops rotating, the clutch 16 is released, the vacuum pump 5 switch is closed, the device is removed, the screw rod 2 is manually rotated, the drill is lifted to a proper position, and then the punching position is selected again.
Claims (3)
1. The self-priming automatic feeding drilling machine comprises a main machine, a screw rod, a dust collecting device, a self-priming device and an automatic feeding device, wherein a motor switch is arranged on a main machine shell, and the main machine shell is clutched; the method is characterized in that: the tail part of the host shell is provided with two through holes, the screw rod penetrates through the two through holes, and a feeding transmission gear is arranged on the screw rod between the two through holes; a travel switch is arranged at one side end part of the screw installation host; the dust collecting device is connected to the front part of the main machine and comprises a horn-shaped funnel, the mouth end of the funnel is fixed to the front part of the main machine, a chute is arranged at the edge of the open end of the funnel, a baffle is inserted into the chute, and the baffle seals the drill bit in the funnel; the self-priming device is connected to the end part of the screw rod in the same direction as the drill bit and comprises a base, a supporting rod connected with a through hole of the base, a sucker group is connected to the end part of the supporting rod, a groove is formed in the middle of the base, the end part of the screw rod provided with a travel switch is clamped and fixed in the groove, and the sucker group is connected with a vacuum pump through an air pipeline; the automatic feeding device comprises a feeding transmission gear, the feeding transmission gear is meshed with a power output gear of the bevel gear set, the bevel gear set comprises a vertical pin shaft and a horizontal pin shaft, the upper end of the vertical pin shaft is a small bevel gear, the lower end of the vertical pin shaft is fixedly connected in a clutch, the clutch is tightly attached to the transmission gear, one end of the horizontal pin shaft is a large bevel gear, the other end of the horizontal pin shaft is fixedly connected in the power output gear, and the small bevel gear and the large bevel gear are meshed with each other; the distance between the motor clutch and the travel switch contact is equal to the punching depth;
the driving gear connected with the motor is meshed with three groups of transmission gears, one group of rotation gears drives the cam mechanism to realize stroke movement of the hammer head, one group of transmission gears drives the drill bit to do rotary movement, and the other group of transmission gears drive the feeding transmission gears to move;
the supporting rods, the sucker groups and the base through holes are arc-shaped, the arc-shaped supporting rods are respectively fixed on the arc-shaped through holes of the base by nuts, and the end part of each arc-shaped supporting rod is provided with the arc-shaped sucker group;
the bottom of the groove on the self-priming device base is welded with a fixed plate, two guide iron rods are welded between the side edge of the groove and the fixed plate, the guide iron rods are sleeved with a movable plate, and the fixed plate and the movable plate are provided with threaded holes; the end part of the screw rod is provided with a through hole matched with the fixed plate and the movable plate.
2. A self-priming automatic feed drilling machine as recited in claim 1, wherein: the funnel of the dust collecting device is irregularly shaped, and the closing end of the funnel is hooked at the end part of the spring fixed on the host shell through the fixedly connected iron hook.
3. A self-priming automatic feed drilling machine as recited in claim 1, wherein: the fixed plate and the movable plate panel are provided with scales for displaying the perforation inclination angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687903.4A CN110405700B (en) | 2019-07-29 | 2019-07-29 | Self-suction type automatic feeding drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687903.4A CN110405700B (en) | 2019-07-29 | 2019-07-29 | Self-suction type automatic feeding drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110405700A CN110405700A (en) | 2019-11-05 |
| CN110405700B true CN110405700B (en) | 2024-03-19 |
Family
ID=68363646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910687903.4A Active CN110405700B (en) | 2019-07-29 | 2019-07-29 | Self-suction type automatic feeding drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110405700B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201567955U (en) * | 2009-06-09 | 2010-09-01 | 宋中强 | Water driller of circulating self-absorption adapting form engineering |
| CN102794478A (en) * | 2012-08-29 | 2012-11-28 | 孙志强 | Sucking disc type bench drill |
| CN108049822A (en) * | 2018-01-20 | 2018-05-18 | 南京卓茨机电科技有限公司 | A kind of horizontal directional drilling machine of the raising Drilling Precision based on Internet of Things |
| CN109016178A (en) * | 2018-08-13 | 2018-12-18 | 中铁建电气化局集团南方工程有限公司 | A kind of gear tiny fragments of stone, coal, etc. wall drilling machine |
| KR20190000630A (en) * | 2017-06-23 | 2019-01-03 | 정준 | Electromotion rivet gun |
| CN210850118U (en) * | 2019-07-29 | 2020-06-26 | 中建安装集团有限公司 | Self-suction type automatic feeding drilling machine |
-
2019
- 2019-07-29 CN CN201910687903.4A patent/CN110405700B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201567955U (en) * | 2009-06-09 | 2010-09-01 | 宋中强 | Water driller of circulating self-absorption adapting form engineering |
| CN102794478A (en) * | 2012-08-29 | 2012-11-28 | 孙志强 | Sucking disc type bench drill |
| KR20190000630A (en) * | 2017-06-23 | 2019-01-03 | 정준 | Electromotion rivet gun |
| CN108049822A (en) * | 2018-01-20 | 2018-05-18 | 南京卓茨机电科技有限公司 | A kind of horizontal directional drilling machine of the raising Drilling Precision based on Internet of Things |
| CN109016178A (en) * | 2018-08-13 | 2018-12-18 | 中铁建电气化局集团南方工程有限公司 | A kind of gear tiny fragments of stone, coal, etc. wall drilling machine |
| CN210850118U (en) * | 2019-07-29 | 2020-06-26 | 中建安装集团有限公司 | Self-suction type automatic feeding drilling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110405700A (en) | 2019-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108655463B (en) | Portable three-hole drilling machine | |
| CN210850118U (en) | Self-suction type automatic feeding drilling machine | |
| CN109291190B (en) | Bent plate perforating machine | |
| CN110405700B (en) | Self-suction type automatic feeding drilling machine | |
| CN111974787A (en) | Pretreatment device is retrieved to fireworks case | |
| CN109580273B (en) | Rock crushing device suitable for little planet | |
| CN110761708A (en) | Spiral down-the-hole drill drilling device and construction method thereof | |
| CN211072811U (en) | Drilling equipment is used in mechanical equipment production | |
| CN117001042A (en) | Brake adjusting arm reaming equipment and reaming method | |
| CN215315874U (en) | Drilling device for car door lock catch | |
| CN213410450U (en) | Drilling equipment convenient to hardware and tools processing usefulness | |
| KR101012115B1 (en) | Apparatus for boring holes at bedrock | |
| CN112571375A (en) | Impact destruction equipment of fracture drill bit | |
| CN210677216U (en) | Chip-preventing tapping machine for hardware machining | |
| CN103737719A (en) | Precast concrete pipe scabbler | |
| CN210025185U (en) | Punching tool for punching indoor decorative ceiling | |
| CN103978372B (en) | Cylinder rotary cutting apparatus | |
| CN219336034U (en) | Automatic trompil ash removal device | |
| CN211539556U (en) | Quick perforating device is used to machine part | |
| CN111575416A (en) | Belt production and processing equipment | |
| CN221184815U (en) | Punching and tapping device | |
| CN221212295U (en) | Building material drilling machine | |
| CN216261230U (en) | Crushing device | |
| CN221021769U (en) | Improved wall drilling device | |
| CN217802332U (en) | Evaporate cutting device who presses aerated concrete block leftover bits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |