CN109202640A - A kind of Portable integral dustless sander - Google Patents

A kind of Portable integral dustless sander Download PDF

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Publication number
CN109202640A
CN109202640A CN201811139704.1A CN201811139704A CN109202640A CN 109202640 A CN109202640 A CN 109202640A CN 201811139704 A CN201811139704 A CN 201811139704A CN 109202640 A CN109202640 A CN 109202640A
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CN
China
Prior art keywords
dust
fixedly connected
casing
hole
lead screw
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.)
Pending
Application number
CN201811139704.1A
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Chinese (zh)
Inventor
周英久
王海科
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Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
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Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd filed Critical Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority to CN201811139704.1A priority Critical patent/CN109202640A/en
Publication of CN109202640A publication Critical patent/CN109202640A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

本发明公开了一种便携式一体无尘打磨机，包括机壳，以及位于其内部的打磨电机、吸尘风机和粉尘盒，打磨电机的输出轴通过齿轮传动连接驱动轴，驱动轴贯穿机壳后固定连接工作盘，机壳固定连接保护罩，保护罩罩设于工作盘，并且保护罩设有通孔，通孔固定连接吸尘管的一端，吸尘管的另一端固定连接吸尘风机的进口端，吸尘风机的出口端固定连接软管的一端，软管的另一端套接粉尘盒的进口端，本发明在工作时通过吸尘风机将粉尘吸入粉尘盒内，一方面可以最大程度避免粉尘对人体的伤害，另一方面避免因勤换集尘袋而降低工作效率，特别适用于对墙面或木板或地板进行打磨，既环保卫生，又能提高工作效率。

The invention discloses a portable integrated dust-free grinding machine, comprising a casing, a grinding motor, a dust suction fan and a dust box located inside the grinding motor. The output shaft of the grinding motor is connected to a drive shaft through gear transmission, and the drive shaft penetrates through the casing The working plate is fixedly connected, the casing is fixedly connected to the protective cover, the protective cover is arranged on the working plate, and the protective cover is provided with a through hole. The inlet end, the outlet end of the dust suction fan is fixedly connected to one end of the hose, and the other end of the hose is sleeved with the inlet end of the dust box. The present invention sucks the dust into the dust box through the dust suction fan during operation, on the one hand, it can maximize the Avoid dust damage to the human body, on the other hand, avoid reducing work efficiency due to frequent replacement of dust bags, especially suitable for grinding walls, wood boards or floors, which is not only environmentally friendly and hygienic, but also improves work efficiency.

Description

A kind of Portable integral dustless sander
Technical field
The present invention relates to decoration construction technical field, specially a kind of Portable integral dustless sander.
Background technique
In decoration construction, for metope bruting process because dust is big, dirty, people less and less is engaged in this industry, metope Also there is an urgent need to the mechanizations of coating tool to crack hard issues for polishing.Meanwhile it may need to carry out eminence work when polishing metope Industry, in the prior art frequently with speeling stairway to realize, but speeling stairway is not only time-consuming and laborious, but also there are security risk, Therefore providing a kind of Portable integral dustless sander that use scope is wide becomes those skilled in the art's urgent need to resolve The problem of.
Summary of the invention
The purpose of the present invention is to provide a kind of Portable integral dustless sanders, to solve to propose in above-mentioned background technique The problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of Portable integral dustless sander, including machine The output shaft of shell and polishing motor, dust absorption fan and dust box on its interior, the polishing motor passes through gear drive Drive shaft is connected, the drive shaft is fixedly connected with scratch diskette after running through casing, and the casing is fixedly connected with protective cover, the protection Cover at scratch diskette, and protective cover is equipped with through-hole, the through-hole is fixedly connected with one end of sweep-up pipe, the sweep-up pipe it is another One end is fixedly connected with the input end of dust absorption fan, and the outlet end of the dust absorption fan is fixedly connected with one end of hose, the hose The other end socket dust box input end；
The bottom of shell is fixedly connected with handle, and the handle bottom is equipped with multi-angle mechanism, and the multi-angle mechanism includes base Plate, the substrate top is bolted handle, and base plate bottom is fixedly connected with hinged block, the hinged upright bar top of hinged block Portion, the upright bar are equipped with rectangular through-hole, and the rectangular through-hole bottom is fixedly connected with stepper motor, the output shaft of the stepper motor One end of screw rod is fixedly connected with by shaft coupling, another end bearing of the screw rod connects thrust bearing, and the thrust bearing is solid Surely at the top of connection rectangular through-hole, the screw rod clearance fit feed screw nut, the feed screw nut is socketed with link block, the connection One end of block articulated linkage, the hinged substrate of the other end of the connecting rod, the bottom of upright rod are fixedly connected with telescopic pole.
Preferably, the internal side of shell wall is fixedly connected with partition, is fixedly connected with dust absorption fan, partition top at the top of the partition Portion is also fixedly connected with two pieces of foam blocks, and two pieces of foam blocks abut dust box.
Preferably, the cabinet top be equipped with chassis hole, one end of chassis hole hinge connecting cover plate, the cover board it is another End snaps connection casing, and plate cover is set to the surface of dust box, and is fixedly connected with knob at the top of cover board, and cover board bottom is fixed Sealing ring is connected, the sealing ring size is equal to chassis hole size.
Preferably, the feed screw nut is trapezoidal screw flange copper nut, and when feed screw nut is located in the middle part of screw rod, hinge It connects block and upright bar is in same straight line.
Preferably, the link block, which is equipped with, is integrally formed semi-circular recesses with it, which abuts feed screw nut, And its diameter is equal to the outer diameter of feed screw nut, the lateral wall of the feed screw nut be equipped with its integrally formed convex block, it is described Convex block is bolted with link block.
Preferably, by inner diameter size, two equal telescopic joints do not form the telescopic pole, the telescopic joint set of large diameter Small internal diameter telescopic joint is connect, and the telescopic joint of large diameter is threadedly coupled fastening nut, it is flexible that the fastening nut abuts small internal diameter The lateral wall of section.
Compared with prior art, the beneficial effects of the present invention are:
1. the present invention is at work sucked dust in dust box by dust absorption fan, dust on the one hand can be utmostly avoided On the other hand injury to human body avoids reducing working efficiency due to frequently changing dust bag, especially suitable for metope or plank or Floor is polished, not only environmentally-friendly sanitary, but also can improve working efficiency；
2. the present invention abuts dust boxes by two pieces of foam blocks, while dust box being consolidated be placed on above partition, It is also convenient for taking dust box away from partition, if dust box completely can pull up hose, then take out dust box by opening cover board, And it is cleared up, entire bruting process high-efficiency environment friendly；
3. connecting rod can involve substrate and do leftward or rightward movement, to change under the involving that the present invention passes through feed screw nut Angle between telescopic pole and handle, even if holding telescopic pole with an inclined angle, scratch diskette can be eternal Realize fitting metope or plank or floor, use scope is wide, and by elongation telescopic pole, can be very good to realize that eminence is made Industry.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is multi-angle mechanism structure schematic diagram in the present invention；
Fig. 3 is the neutral rod structure schematic diagram of the present invention；
Fig. 4 is feed screw nut and connecting block structure schematic diagram in the present invention.
In figure: 1 casing, 2 polishing motors, 3 dust absorption fans, 4 dust boxes, 5 drive shafts, 6 scratch diskettes, 7 protective covers, 8 dust suctions Pipe, 9 hoses, 10 handles, 11 substrates, 12 hinged blocks, 13 upright bars, 14 rectangular through-holes, 15 stepper motors, 16 screw rods, 17 thrust axis It holds, 18 feed screw nuts, 19 link blocks, 20 connecting rods, 21 telescopic poles, 22 partitions, 23 foam blocks, 24 cover boards.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1 to FIG. 4: a kind of Portable integral dustless sander, including machine The output shaft of shell 1 and polishing motor 2 on its interior, dust absorption fan 3 and dust box 4, motor 2 of polishing is passed by gear Dynamic connection drive shaft 5, drive shaft 5 are fixedly connected with scratch diskette 6 after running through casing 1, and casing 1 is fixedly connected with protective cover 7, protective cover 7 Scratch diskette 6 is covered at, and protective cover 7 is equipped with through-hole, through-hole is fixedly connected with one end of sweep-up pipe 8, and the other end of sweep-up pipe 8 is solid Surely the input end of dust absorption fan 3 is connected, the outlet end of dust absorption fan 3 is fixedly connected with one end of hose 9, another end cap of hose 9 Connect the input end of dust box 4.
1 bottom of casing is fixedly connected with handle 10, and 10 bottom of handle is equipped with multi-angle mechanism, and multi-angle mechanism includes substrate 11,11 top bolt of substrate connects handle 10, and 11 bottom of substrate is fixedly connected with hinged block 12, and hinged block 12 is hingedly vertical The top of bar 13, upright bar 13 are equipped with rectangular through-hole 14, and 14 bottom of rectangular through-hole is fixedly connected with stepper motor 15, stepper motor 15 it is defeated Shaft is fixedly connected with one end of screw rod 16 by shaft coupling, and another end bearing of screw rod 16 connects thrust bearing 17, thrust bearing 17 are fixedly connected with 14 top of rectangular through-hole, and 16 clearance fit feed screw nut 18 of screw rod, feed screw nut 18 is socketed with link block 19, even One end of 19 articulated linkage 20 of block is connect, the hinged substrate 11 of the other end of connecting rod 20,13 bottom of upright bar is fixedly connected with telescopic pole 21。
In the present embodiment, by inner diameter size, two equal telescopic joints do not form telescopic pole 21, and large diameter stretches Section is socketed small internal diameter telescopic joint, and the telescopic joint of large diameter is threadedly coupled fastening nut, and it is flexible that fastening nut abuts small internal diameter The lateral wall of section so that large and small internal diameter telescopic joint relatively moves, and then changes scalable support by unscrewing fastening nut The length of bar 21；It can be again by tightening fastening nut, so that being kept fixed between large and small internal diameter telescopic joint.
In the present embodiment, as shown in Figure 1,1 inner sidewall of casing is fixedly connected with partition 22, suction is fixedly connected at the top of partition 22 Dirt blower 3,22 top of partition are also fixedly connected with two pieces of foam blocks 23, dust box 4 are abutted by two pieces of foam blocks 23, so that dust Box 4, which can consolidate, is placed on 22 top of partition.
Chassis hole, one end of chassis hole hinge connecting cover plate 24 are equipped at the top of casing 1, the other end of cover board 24 snaps connection Casing, cover board 24 covers at the surface of dust box 4, and knob is fixedly connected at the top of cover board 24, and 24 bottom of cover board is fixed to be connected Sealing ring is connect, is equal to chassis hole size by the way that sealing ring to be sized to, so that 24 sealer housing hole of cover board, to guarantee ash The foreign matters such as dirt will not enter inside casing 1 from the gap of cover board 24 and chassis hole.
In the present embodiment, as shown in Figure 2 and Figure 4, feed screw nut 18 is trapezoidal screw flange copper nut, and works as screw rod spiral shell When mother 18 is located at 16 middle part of screw rod, hinged block 12 and upright bar 13 are in same straight line, and after starting stepper motor 15, feed screw nut 18 It can move up and down on screw rod 16, under the involving of feed screw nut 18, connecting rod 20 involves substrate 11 and does leftward or rightward shifting It is dynamic, to change the angle between telescopic pole 21 and handle 10, even if holding telescopic pole with an inclined angle 2, scratch diskette 6 can realize fitting metope or plank or floor forever.Link block 19, which is equipped with, is integrally formed semi-circular recesses with it, The semi-circular recesses abut feed screw nut 18, and its diameter is equal to the outer diameter of feed screw nut 18, the lateral wall of feed screw nut 19 Equipped with its integrally formed convex block, convex block is bolted with link block 19, may be implemented to remove link block from feed screw nut 18 19。
Working principle: dust absorption fan 3 and dust box 4 are placed in casing 1, form one, easy to carry.In work when use Make disk 6 and is put into Sand paper for polishing.Device using when be divided into lower operation and high-rise working, it is specific as follows:
Lower operation: access power supply, directly hand-held handle 10, polishing motor 2 are worked at the same time with dust absorption fan 3, and polishing motor 2 passes through The rotation of 3 scratch diskettes is driven by gear drive, is polished providing protection by sand paper on scratch diskette 6 by protective cover 7, while dust suction Dust sucking is stored in dust box 4 by sweep-up pipe 8 by blower 3, as dust box 4 can completely be pulled up soft by opening cover board 24 Pipe 9 then takes out dust box 4, and clears up it, entire bruting process high-efficiency environment friendly.
High-rise working: adjusting the length of telescopic pole 21, starts stepper motor 15, and the output shaft of stepper motor 15 drives Screw rod 16 rotates, and according to screw rod rotary principle, feed screw nut 18 moves linearly along 16 direction of screw rod, feed screw nut's 18 Under promotion, link block 19 pushes connecting rod 20, so that angulation change occurs for substrate 11 and upright bar 13, even if with an inclined angle Hand-held telescopic pole 21, scratch diskette 6 can also be bonded metope or plank or floor, access power supply, polishing motor 2 and dust suction wind Machine 3 works at the same time, and polishing motor 2 drives the rotation of 3 scratch diskettes via gear drive, provides protection by protective cover 7 and passes through scratch diskette 6 Upper sand paper starts to polish, while dust sucking is stored in dust box 4 by sweep-up pipe 8 by dust absorption fan 3, as dust box 4 has been expired Hose 9 can be pulled up, then takes out dust box 4, and clear up it, completes multi-angle polished process by opening cover board 24.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (6)

1.一种便携式一体无尘打磨机，包括机壳（1），以及位于其内部的打磨电机（2）、吸尘风机（3）和粉尘盒（4），其特征在于：所述打磨电机（2）的输出轴通过齿轮传动连接驱动轴（5），所述驱动轴（5）贯穿机壳（1）后固定连接工作盘（6），所述机壳（1）固定连接保护罩（7），所述保护罩（7）罩设于工作盘（6），并且保护罩（7）设有通孔，所述通孔固定连接吸尘管（8）的一端，所述吸尘管（8）的另一端固定连接吸尘风机（3）的进口端，所述吸尘风机（3）的出口端固定连接软管（9）的一端，所述软管（9）的另一端套接粉尘盒（4）的进口端；1. A portable all-in-one dust-free grinding machine, comprising a casing (1), a grinding motor (2), a dust suction fan (3) and a dust box (4) located in the interior thereof, characterized in that: the grinding motor The output shaft of (2) is connected to the drive shaft (5) through gear transmission. The drive shaft (5) penetrates the casing (1) and is fixedly connected to the work plate (6), and the casing (1) is fixedly connected to the protective cover ( 7), the protective cover (7) is covered on the work plate (6), and the protective cover (7) is provided with a through hole, the through hole is fixedly connected to one end of the dust suction pipe (8), the dust suction pipe The other end of (8) is fixedly connected to the inlet end of the dust suction fan (3), the outlet end of the dust suction fan (3) is fixedly connected to one end of the hose (9), and the other end of the hose (9) is sleeved Connect to the inlet end of the dust box (4); 所述机壳（1）底部固定连接把手（10），所述把手（10）底部设有多角度机构，所述多角度机构包括基板（11），所述基板（11）顶部螺栓连接把手（10），并且基板（11）底部固定连接铰接块（12），所述铰接块（12）铰接立杆（13）顶部，所述立杆（13）设有矩形通孔（14），所述矩形通孔（14）底部固定连接步进电机（15），所述步进电机（15）的输出轴通过联轴器固定连接丝杆（16）的一端，所述丝杆（16）的另一端轴承连接推力轴承（17），所述推力轴承（17）固定连接矩形通孔（14）顶部，所述丝杆（16）间隙配合丝杆螺母（18），所述丝杆螺母（18）套接有连接块（19），所述连接块（19）铰接连杆（20）的一端，所述连杆（20）的另一端铰接基板（11），所述立杆（13）底部固定连接可伸缩撑杆（21）。The bottom of the casing (1) is fixedly connected to the handle (10), the bottom of the handle (10) is provided with a multi-angle mechanism, the multi-angle mechanism includes a base plate (11), and the top of the base plate (11) is bolted to the handle (10). 10), and the bottom of the base plate (11) is fixedly connected to the hinge block (12), the hinge block (12) is hinged to the top of the vertical rod (13), and the vertical rod (13) is provided with a rectangular through hole (14), the The bottom of the rectangular through hole (14) is fixedly connected to the stepper motor (15), the output shaft of the stepper motor (15) is fixedly connected to one end of the lead screw (16) through the coupling, and the other end of the lead screw (16) One end bearing is connected to the thrust bearing (17), the thrust bearing (17) is fixedly connected to the top of the rectangular through hole (14), the screw rod (16) is clearance fit with the screw screw nut (18), and the screw screw nut (18) A connecting block (19) is sleeved, the connecting block (19) is hinged to one end of the connecting rod (20), the other end of the connecting rod (20) is hinged to the base plate (11), and the bottom of the vertical rod (13) is fixed Connect the retractable struts (21). 2.根据权利要求1所述的一种便携式一体无尘打磨机，其特征在于：所述机壳（1）内侧壁固定连接隔板（22），所述隔板（22）顶部固定连接吸尘风机（3），隔板（22）顶部还固定连接两块泡沫块（23），两块所述泡沫块（23）抵接粉尘盒（4）。2. A portable integrated dust-free sander according to claim 1, characterized in that: the inner side wall of the casing (1) is fixedly connected to the partition (22), and the top of the partition (22) is fixedly connected to the suction The dust blower (3) and the top of the partition plate (22) are also fixedly connected with two foam blocks (23), and the two foam blocks (23) abut against the dust box (4). 3.根据权利要求1所述的一种便携式一体无尘打磨机，其特征在于：所述机壳（1）顶部设有机壳孔，机壳孔铰链连接盖板（24）的一端，所述盖板（24）的另一端卡扣连接机壳，盖板（24）罩设于粉尘盒（4）的正上方，并且盖板（24）顶部固定连接拉手，盖板（24）底部固定连接密封圈，所述密封圈大小等于机壳孔大小。3. A portable integrated dust-free grinding machine according to claim 1, characterized in that: the top of the casing (1) is provided with a casing hole, and the casing hole is hingedly connected to one end of the cover plate (24), so that the The other end of the cover plate (24) is snap-connected to the casing, the cover plate (24) is covered directly above the dust box (4), and the top of the cover plate (24) is fixedly connected to the handle, and the bottom of the cover plate (24) is fixed Connect the sealing ring, the size of the sealing ring is equal to the size of the casing hole. 4.根据权利要求1所述的一种便携式一体无尘打磨机，其特征在于：所述丝杆螺母（18）为梯形丝杆法兰铜螺母，且当丝杆螺母（18）位于丝杆（16）中部时，铰接块（12）与立杆（13）处于同一直线。4. A portable integrated dust-free grinding machine according to claim 1, characterized in that: the lead screw nut (18) is a trapezoidal lead screw flange copper nut, and when the lead screw nut (18) is located on the lead screw (16) In the middle, the hinge block (12) and the vertical rod (13) are in the same line. 5.根据权利要求1所述的一种便携式一体无尘打磨机，其特征在于：所述连接块（19）设有与其一体成型半圆形凹槽，该半圆形凹槽抵接丝杆螺母（18），并且其直径等于丝杆螺母（18）的外径，所述丝杆螺母（19）的外侧壁设有与其一体成型的凸块，所述凸块与连接块（19）螺栓连接。5 . The portable integrated dust-free sander according to claim 1 , wherein the connecting block ( 19 ) is provided with a semi-circular groove integrally formed therewith, and the semi-circular groove abuts the screw rod. 6 . The nut (18) has a diameter equal to the outer diameter of the lead screw nut (18), the outer side wall of the lead screw nut (19) is provided with a projection integrally formed therewith, and the projection is connected with the connection block (19) bolt connect. 6.根据权利要求1所述的一种便携式一体无尘打磨机，其特征在于：所述可伸缩撑杆（21）由内径大小不等的两根伸缩节组成，大内径的伸缩节套接小内径伸缩节，并且大内径的伸缩节螺纹连接紧固螺母，所述紧固螺母抵接小内径伸缩节的外侧壁。6. The portable integrated dust-free grinder according to claim 1, wherein the telescopic strut (21) is composed of two expansion joints with different inner diameters, and the expansion joint with a large inner diameter is sleeved An expansion joint with a small inner diameter is provided, and the expansion joint with a large inner diameter is threadedly connected with a tightening nut, and the tightening nut abuts the outer side wall of the expansion joint with a small inner diameter.
CN201811139704.1A 2018-09-28 2018-09-28 A kind of Portable integral dustless sander Pending CN109202640A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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CN110116350A (en) * 2019-05-27 2019-08-13 王宏斌 A kind of casting mould process equipment
CN110774135A (en) * 2019-11-11 2020-02-11 浙江冠鑫科技股份有限公司 Lithium electricity angle mill

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CA2051514A1 (en) * 1991-09-16 1993-03-17 Glen Allen Yarbrough Water-filtered vacuum wall sander
CN201744904U (en) * 2010-08-18 2011-02-16 西安绿宇机械设备有限公司 Metope putty dedusting sander
CN103926318A (en) * 2014-04-30 2014-07-16 国家电网公司 Wall or floor empty drum detector
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Publication number Priority date Publication date Assignee Title
CN110116350A (en) * 2019-05-27 2019-08-13 王宏斌 A kind of casting mould process equipment
CN110774135A (en) * 2019-11-11 2020-02-11 浙江冠鑫科技股份有限公司 Lithium electricity angle mill

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Application publication date: 20190115