CN214817499U

CN214817499U - Improved self-dust-absorption type grinding machine

Info

Publication number: CN214817499U
Application number: CN202121045430.7U
Authority: CN
Inventors: 李俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-11-23
Anticipated expiration: 2031-05-17

Abstract

The utility model relates to a self-dust absorption formula polisher of improvement, including the guard shield, the mill, including a motor, an end cap, a controller, and a cover plate, drive mechanism, dust extraction, drive mechanism includes first transmission shaft, the second transmission shaft, the third transmission shaft, first cylindrical gear, second cylindrical gear, first bevel gear, second bevel gear, dust extraction includes suction hood and dust absorption fan blade, the one end of first transmission shaft and the output shaft of motor, the other end is connected with the dust absorption fan blade, first cylindrical gear sets up in first transmission shaft, second cylindrical gear and the coaxial setting of first bevel gear are on the second transmission shaft, second cylindrical gear meshes with first cylindrical gear, first bevel gear meshes with second bevel gear mutually, second bevel gear sets up the upper end at the third transmission shaft, the lower extreme of third transmission shaft penetrates in the guard shield and is connected with the mill. The utility model has the advantages of high transmission efficiency, small power consumption of the motor, low noise, convenient installation and manufacture, reasonable and compact structure layout, small size, light weight, low cost and the like.

Description

Improved self-dust-absorption type grinding machine

Technical Field

The utility model belongs to the technical field of electric tool technique and specifically relates to a self-dust absorption formula polisher of improvement is related to.

Background

In the building engineering construction, often need use the polisher to polish the wall, the polisher can produce sweeps, dust at the during operation, can produce the pollution to the environment to influence workman's healthy. In order to avoid the influence of dust, a dust suction structure is generally required to be installed on the sander.

For example, chinese utility model patent CN208179199 discloses an integrated dust-collecting polisher, which comprises a dust-collecting mechanism, a head assembly and a handle, wherein the handle is hinged to the head assembly, the dust-collecting mechanism comprises a dust-collecting blade and a dust-collecting pipeline, the dust-collecting blade is connected to the inside of the dust-collecting pipeline, the head assembly comprises a motor and a polishing disc, an output shaft of the motor is connected to a transmission shaft, one end of the transmission shaft is connected to the output shaft of the motor, the other end of the transmission shaft is connected to the dust-collecting blade, the transmission shaft is connected to a bevel gear, the polishing disc is in transmission connection with the bevel gear through a transmission mechanism, the polishing disc is provided with a dust-collecting hole, and the dust-collecting pipeline is communicated with the dust-collecting hole; the middle part of the disc is connected with a mounting hole, a large end cover is fixedly connected in the mounting hole, a middle cover is fixedly connected above the large end cover, a plurality of support legs extend out of the edge of the middle cover, and the support legs are fixedly connected with the disc; the dust collector also comprises a motor shell, a shaft sleeve is sleeved outside the transmission shaft, the left end and the right end of the shaft sleeve are respectively connected with the dust collection pipeline and the motor shell, a middle cover is connected below the shaft sleeve, and the transmission mechanism is arranged in the shaft sleeve; a hinged shaft is fixedly connected to the shaft sleeve, the front end of the handle is forked to form two hinged arms, and the two hinged arms are hinged to the hinged shaft; the transmission mechanism comprises a first large gear meshed with the bevel gear, the first large gear is fixedly connected with the gear shaft, the transmission mechanism further comprises a second large gear and an output shaft fixedly connected with the second large gear, the second large gear is meshed with the gear shaft, and the output shaft penetrates through the middle cover and the large end cover to be connected with the polishing disc. The integrated dust-collecting polisher has the following defects:

1) a bevel gear is connected to a transmission shaft connected with an output shaft of the motor, namely, an angular transmission structure is adopted for the first-stage speed reduction, and the problems of low transmission efficiency, large power consumption of the motor and large noise exist.

2) The transmission case adopts the sectional type design, and the structure is complicated, and the installation preparation is inconvenient.

3) The transmission structure layout is not reasonable and compact enough, so that the machine head is not small and light enough.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an improved self-dust-absorption type grinding machine which has high transmission efficiency, low noise, convenient installation and manufacture, reasonable and compact structure layout, small size, light weight and low cost.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a self-suction type polisher of improvement, includes the guard shield and sets up the mill in the guard shield and sets up motor, drive mechanism, dust extraction in the guard shield upper end outside, drive mechanism includes first transmission shaft, secondary drive axle, third transmission shaft, first cylindrical gear, second cylindrical gear, first bevel gear, second bevel gear, dust extraction includes the suction hood and locates the dust absorption fan blade in the suction hood, the one end of first transmission shaft with the output shaft of motor, the other end stretch into in the suction hood with the dust absorption fan blade is connected, secondary drive axle parallel arrangement is in the below of first transmission shaft, the third transmission shaft sets up perpendicularly the below of first transmission shaft, first cylindrical gear sets up on the first transmission shaft, second cylindrical gear with the coaxial setting of first bevel gear is in on the second transmission shaft, the second cylindrical gear is meshed with the first cylindrical gear, the first bevel gear is meshed with the second bevel gear, the second bevel gear is arranged at the upper end of the third transmission shaft, and the lower end of the third transmission shaft penetrates into the shield to be connected with the grinding disc.

Furthermore, the diameter of the first cylindrical gear is smaller than that of the second cylindrical gear and is integrally formed with the first transmission shaft, and the diameter of the first bevel gear is smaller than that of the second bevel gear and is integrally formed with the second transmission shaft.

Further, the first bevel gear is located on one side of the second bevel gear close to the dust suction device, the second cylindrical gear is located between the first bevel gear and the dust suction device, and the third transmission shaft is located between the second transmission shaft and the motor.

Further, this from dust absorption formula polisher still includes and is used for holding and establishes drive mechanism and is located the motor with transmission box between the dust extraction, transmission box have towards the guard shield opening just can supply the third transmission shaft reaches the first opening of second bevel gear dismouting, first opening is connected with first end cover, offer the confession on the guard shield first end cover embedding and the caulking groove of shape looks adaptation with it.

Furthermore, the transmission case body is also provided with a second opening part facing the opening of the dust hood and allowing the first transmission shaft to pass through and the second transmission shaft, the second cylindrical gear and the first bevel gear to be disassembled and assembled, the second opening part is connected with a second end cover, and at least part of the second end cover is abutted to the dust hood.

Further, the second end cover comprises an upper cover body for the first transmission shaft to pass through and abut against the dust hood and a lower cover body for mounting an end bearing of the second transmission shaft.

Furthermore, one end of the motor facing the transmission case body is connected with a motor end cover, an output shaft of the motor penetrates out of the motor end cover and extends into the transmission case body to be connected with the first transmission shaft, and the transmission case body is further provided with a third opening portion facing the opening of the motor end cover and fixedly connected with the opening of the motor end cover.

Furthermore, a heat dissipation fan blade is installed at a position, corresponding to the motor end cover, on the output shaft of the motor, and a heat dissipation hole is formed in the motor end cover.

Furthermore, four fixing columns distributed in a trapezoid shape are arranged on the outer surface of the upper end of the protective cover, the transmission box body is further provided with four connecting sleeves distributed in a trapezoid shape, and the four connecting sleeves are respectively sleeved on the corresponding fixing columns and fixedly connected with the corresponding fixing columns through screws.

Further, the transmission case still has and is used for holding and establishes the hollow cylinder portion of first transmission shaft, the excircle surface cover of hollow cylinder portion is equipped with a connecting sleeve, and the both sides of this connecting sleeve are protruding respectively to be equipped with a spliced pole, still include the handle from dust absorption formula polisher, the front end both sides of handle are respectively through a connecting arm and the rotatable pin joint of spliced pole that corresponds.

Compared with the prior art, the utility model discloses following beneficial effect has:

first, the utility model discloses one-level variable speed structure between motor output shaft and the mill sets up to parallel drive structure, compares with the one-level angular drive variable speed structure among the prior art, not only can reduce the transmission noise, and the consumption requirement to the motor is lower moreover, can improve transmission efficiency under the condition of equal consumption simultaneously.

Secondly, the utility model discloses a transmission box adopts the integrated design, has made things convenient for installation and preparation greatly.

Furthermore, the utility model discloses a drive mechanism and transmission box structure is more reasonable, compact to make transmission box can do littleer, aircraft nose weight can be lighter, and the cost also descends thereupon.

Drawings

Fig. 1 is a schematic perspective view of the self-cleaning sander of the present invention.

Fig. 2 is a schematic cross-sectional view of the head of the self-cleaning sander of the present invention.

Fig. 3 is a schematic view of a partial explosion of the head of the self-cleaning sander of the present invention.

Fig. 4 is a schematic top perspective view of the middle shield of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments shown in the drawings.

As shown in fig. 1 to 4, the improved self-dust-absorption sander of the present embodiment includes a shield 1, a grinding disc 2 disposed in the shield 1, a motor 3 disposed outside the upper end of the shield 1, a transmission mechanism 4, and a dust absorption device 5. The transmission mechanism 4 comprises a first transmission shaft 41, a second transmission shaft 42, a third transmission shaft 43, a first cylindrical gear 44, a second cylindrical gear 45, a first bevel gear 46 and a second bevel gear 47, and the dust collection device 5 comprises a dust collection cover 51 and dust collection fan blades 52 arranged in the dust collection cover 51. One end of a first transmission shaft 41 is connected with an output shaft 31 of the motor 3, the other end of the first transmission shaft extends into a dust hood 51 to be connected with a dust collection fan blade 52, a second transmission shaft 42 is arranged below the first transmission shaft 41 in parallel, a third transmission shaft 43 is vertically arranged below the first transmission shaft 41, a first cylindrical gear 44 is arranged on the first transmission shaft 41, a second cylindrical gear 45 and a first bevel gear 46 are coaxially arranged on the second transmission shaft 42, the second cylindrical gear 45 is meshed with the first cylindrical gear 44, the first bevel gear 46 is meshed with a second bevel gear 47, the second bevel gear 47 is arranged at the upper end of the third transmission shaft 43, and the lower end of the third transmission shaft 43 penetrates into the shield 1 to be connected with the grinding disc 2.

As described above, the connection between the one end of the first transmission shaft 41 and the output shaft 31 of the motor 3 may be a fixed connection or an integral connection, in other words, the first transmission shaft 41 and the output shaft 31 of the motor 3 may be manufactured separately and then fixed together, or may be manufactured integrally.

As described above, the first cylindrical gear 44 has a smaller diameter than the second cylindrical gear 45 and is integrally formed with the first transmission shaft 41, and the first bevel gear 46 has a smaller diameter than the second bevel gear 47 and is integrally formed with the second transmission shaft 42, thereby achieving two-stage reduction.

As described above, the first bevel gear 46 is located on the side of the second bevel gear 47 adjacent to the dust suction means 5, the second cylindrical gear 45 is located between the first bevel gear 46 and the dust suction means 5, and the third transmission shaft 43 is located between the second transmission shaft 42 and the motor 3.

As described above, the self-dust-absorption type sander further includes the transmission case 6 for accommodating the transmission mechanism 4 and located between the motor 3 and the dust-absorption device 5, the transmission case 6 has the first opening 61 which is open to the shield 1 and allows the third transmission shaft 43 and the second bevel gear 47 to be detached, the first opening 61 is connected to the first end cap 7, and the shield 1 is provided with the caulking groove 101 which allows the first end cap 7 to be inserted and has a shape matching with the first end cap 7.

As described above, the transmission case 6 further has the second opening 62 which is open to the dust hood 51 and through which the first transmission shaft 41 can be inserted and the second transmission shaft 42, the second cylindrical gear 45, and the first bevel gear 46 can be attached and detached, the second end cover 8 is connected to the second opening 62, and at least a part of the second end cover 8 abuts against the dust hood 51.

Further, the second end cover 8 includes an upper cover 81 for passing the first transmission shaft 41 and abutting against the dust hood 51, and a lower cover 82 for mounting the end bearing 420 of the second transmission shaft 42.

As described above, the end of the motor 3 facing the transmission case 6 is connected to the motor end cover 30, the output shaft 31 of the motor 3 extends out of the motor end cover 30 and extends into the transmission case 6 to be connected to the first transmission shaft 41, and the transmission case 6 further has the third opening 63 facing the opening of the motor end cover 30 and fixedly connected thereto.

As mentioned above, the output shaft 31 of the motor 3 is provided with the heat dissipation fan blade 32 at a position corresponding to the motor end cover 30, the motor end cover 30 is provided with the heat dissipation hole 301, and when the motor works, heat generated by the motor is dissipated outwards through the heat dissipation fan blade 32 and the heat dissipation hole 301, so that the phenomenon of machine burning due to overheating of the motor is prevented.

As mentioned above, the outer surface of the upper end of the shield 1 is provided with four fixing posts 9 distributed in a trapezoid shape, the transmission case 6 is further provided with four connecting sleeves 64 distributed in a trapezoid shape, and the four connecting sleeves 64 are respectively sleeved on the corresponding fixing posts 9 and fixedly connected with the corresponding fixing posts 9 through screws.

As mentioned above, the transmission case 6 further has a hollow cylindrical portion 65 for accommodating the first transmission shaft 41, the outer circumferential surface of the hollow cylindrical portion 65 is sleeved with a connection sleeve 10, and two sides of the connection sleeve 10 are respectively provided with a connection post 11 in a protruding manner. The self-dust-absorption type sander further comprises a handle 12, and two sides of the front end of the handle 12 are rotatably pivoted with the corresponding connecting columns 11 through connecting arms 13 respectively.

The above mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention can not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still included in the scope of the present invention.

Claims

1. The utility model provides a self-dust absorption formula polisher of improvement, includes the guard shield and sets up the mill in the guard shield and set up at outside motor, drive mechanism, the dust extraction of guard shield upper end, its characterized in that: the transmission mechanism comprises a first transmission shaft, a second transmission shaft, a third transmission shaft, a first cylindrical gear, a second cylindrical gear, a first bevel gear and a second bevel gear, the dust collection device comprises a dust hood and dust collection blades arranged in the dust hood, one end of the first transmission shaft is connected with an output shaft of the motor, the other end of the first transmission shaft extends into the dust hood and is connected with the dust collection blades, the second transmission shaft is arranged below the first transmission shaft in parallel, the third transmission shaft is vertically arranged below the first transmission shaft, the first cylindrical gear is arranged on the first transmission shaft, the second cylindrical gear and the first bevel gear are coaxially arranged on the second transmission shaft, the second cylindrical gear is meshed with the first cylindrical gear, the first bevel gear is meshed with the second bevel gear, and the second bevel gear is arranged at the upper end of the third transmission shaft, the lower end of the third transmission shaft penetrates into the protective cover to be connected with the grinding disc.

2. The improved self-dusting sander as set forth in claim 1, wherein: the diameter of the first cylindrical gear is smaller than that of the second cylindrical gear and is integrally formed with the first transmission shaft, and the diameter of the first bevel gear is smaller than that of the second bevel gear and is integrally formed with the second transmission shaft.

3. The improved self-dusting sander as set forth in claim 1, wherein: the first bevel gear is positioned on one side of the second bevel gear close to the dust suction device, the second cylindrical gear is positioned between the first bevel gear and the dust suction device, and the third transmission shaft is positioned between the second transmission shaft and the motor.

4. An improved self-dust-collecting sander as set forth in claim 1, 2 or 3, wherein: this from dust absorption formula polisher still is used for holding and establishes drive mechanism and be located the motor with transmission box between the dust extraction, transmission box have towards the guard shield opening just can supply the third transmission shaft reaches the first opening of second bevel gear dismouting, first opening is connected with first end cover, offer the confession on the guard shield first end cover embedding and the caulking groove of shape looks adaptation with it.

5. The improved self-dust-collecting sander as set forth in claim 4, wherein: the transmission case body is also provided with a second opening part facing the opening of the dust hood and allowing the first transmission shaft to pass through and the second transmission shaft, the second cylindrical gear and the first bevel gear to be disassembled and assembled, the second opening part is connected with a second end cover, and at least part of the second end cover is abutted to the dust hood.

6. An improved self-dust-collecting sander as set forth in claim 5, wherein: the second end cover comprises an upper cover body used for allowing the first transmission shaft to pass through and abutting against the dust hood and a lower cover body used for installing an end bearing of the second transmission shaft.

7. The improved self-dust-collecting sander as set forth in claim 4, wherein: one end of the motor, facing the transmission box body, is connected with a motor end cover, an output shaft of the motor penetrates out of the motor end cover and extends into the transmission box body to be connected with the first transmission shaft, and the transmission box body is further provided with a third opening, facing the opening of the motor end cover and fixedly connected with the opening of the motor end cover.

8. The improved self-dusting sander as set forth in claim 7, wherein: the output shaft of the motor is provided with heat dissipation blades corresponding to the position of the motor end cover, and the motor end cover is provided with heat dissipation holes.

9. The improved self-dust-collecting sander as set forth in claim 4, wherein: the transmission case body is also provided with four connecting sleeves distributed in a trapezoid shape, and the four connecting sleeves are respectively sleeved on the corresponding fixing columns and fixedly connected with the corresponding fixing columns through screws.

10. The improved self-dust-collecting sander as set forth in claim 4, wherein: the transmission case still has and is used for holding and establishes the hollow cylinder portion of first transmission shaft, the excircle surface cover of hollow cylinder portion is equipped with a connecting sleeve, and the both sides of this connecting sleeve are protruding respectively to be equipped with a spliced pole, still include the handle from dust absorption formula polisher, the rotatable pin joint of spliced pole through a connecting arm and correspondence respectively in the front end both sides of handle.