阅读说明：本技术 打磨机构及具有其的打磨装置 (Polishing mechanism and polishing device with same ) 是由 程德考 曹锦明 詹伟刚 陈卿 于 2020-03-31 设计创作，主要内容包括：本发明提供了一种打磨机构及具有其的打磨装置,打磨机构包括：保护罩,保护罩具有容纳空间和第一开口,第一开口与容纳空间相连通；回转部,设置在容纳空间内,回转部与保护罩连接且相对保护罩可转动地设置；多个打磨组件,各个打磨组件均设置在回转部上,以使打磨组件绕回转部的回转中心线转动；各个打磨组件均包括打磨盘,打磨盘的打磨端通过第一开口凸出于保护罩设置,各个打磨盘相对回转部自转。本发明的打磨机构解决了现有技术中的打磨机构的打磨效率较低的问题。(The invention provides a grinding mechanism and a grinding device with the same, wherein the grinding mechanism comprises: the protective cover is provided with an accommodating space and a first opening, and the first opening is communicated with the accommodating space; the rotary part is arranged in the accommodating space, is connected with the protective cover and is rotatably arranged relative to the protective cover; the polishing assemblies are arranged on the rotating part so as to rotate around the rotating center line of the rotating part; each polishing assembly comprises a polishing disc, the polishing end of the polishing disc protrudes out of the protective cover through the first opening, and each polishing disc rotates relative to the rotary part. The polishing mechanism solves the problem of low polishing efficiency of the polishing mechanism in the prior art.)

1. A grinding mechanism, comprising:

a protective cover (110), the protective cover (110) having an accommodation space (111) and a first opening (112), the first opening (112) communicating with the accommodation space (111);

a rotating part (120) arranged in the accommodating space (111), wherein the rotating part (120) is connected with the protective cover (110) and can be rotatably arranged relative to the protective cover (110);

a plurality of grinding assemblies (130), each grinding assembly (130) being disposed on the revolving portion (120) to rotate the grinding assembly (130) about a centre line of revolution of the revolving portion (120); each grinding assembly (130) comprises a grinding disc (131), the grinding end of the grinding disc (131) protrudes out of the protective cover (110) through the first opening (112), and each grinding disc (131) rotates relative to the rotary part (120).

2. The sharpening mechanism as recited in claim 1, further comprising a gear ring (140), the gear ring (140) disposed within the protective cover (110) and fixedly connected to the protective cover (110); the sanding assembly (130) further comprising:

the transmission shaft (132) is inserted on the rotary part (120), and the polishing disc (131) is connected with the transmission shaft (132);

the gear (133) is connected with the transmission shaft (132), the gear (133) is meshed with the gear ring (140) so as to drive the transmission shaft (132) and the gear (133) to rotate around a rotation center line of the rotation part (120) when the rotation part (120) rotates, and the transmission shaft (132) rotates relative to the rotation part (120) under the action of the gear (133) and the gear ring (140) which are meshed with each other.

3. The sharpening mechanism as recited in claim 2, wherein the sharpening assembly (130) further comprises:

the pressing sheet (134), the pressing sheet (134) is connected with the transmission shaft (132), and the pressing sheet (134) is pressed on the polishing disc (131) so that the polishing disc (131) abuts against a first shaft shoulder of the transmission shaft (132);

a shim (135), the shim (135) being sleeved on the drive shaft (132) and being located between the first shoulder and the polishing disc (131).

4. The sharpening mechanism as recited in claim 2, characterized in that the drive shaft (132) has first and second oppositely disposed drive ends; the grinding mechanism further comprises:

a lower support (150), wherein the lower support (150) is fixedly connected with the revolving part (120) and is positioned between the revolving part (120) and the polishing disc (131); the lower supporting part (150) is provided with a plurality of first avoidance holes (151), the first avoidance holes (151) and the grinding assemblies (130) are arranged in a one-to-one correspondence manner, and a transmission shaft (132) of each grinding assembly (130) sequentially penetrates through the rotating part (120) and the first avoidance holes (151);

the upper supporting part (160) is fixedly connected with the lower supporting part (150), the upper supporting part (160) and the lower supporting part (150) are arranged on two opposite sides of the gear (133), and the upper supporting part (160) and the second transmission end of the transmission shaft (132) are oppositely arranged.

5. The sharpening mechanism as recited in claim 4, characterized in that the sharpening assembly (130) further comprises:

a damping ring (136) fixedly disposed at a second drive end of the drive shaft (132), the damping ring (136) disposed between the upper support portion (160) and the second drive end.

6. The sharpening mechanism of claim 4 further comprising:

one end of the first fastening piece (170) is connected with the upper supporting part (160), and the other end of the first fastening piece (170) penetrates through the gear ring (140) and then is connected with the lower supporting part (150).

7. The sharpening mechanism of claim 4 further comprising:

and the guard ring (180) is fixedly arranged on the lower supporting part (150), and the inner wall surface of the guard ring (180) is attached to the outer wall surface of the gear ring (140).

8. The sharpening mechanism as recited in claim 4, characterized in that the protective shield (110) comprises a protective plate (113), the protective plate (113) being disposed opposite the first opening (112); the grinding mechanism further comprises:

the driving device (190) comprises a driving body and a driving end, and the driving body is arranged on the protection plate (113) and positioned on the outer side of the protection cover (110); the driving end is sequentially arranged through the protection plate (113) and the upper supporting part (160) in a penetrating mode;

the torque limiter (210) is arranged on one side, away from the protection plate (113), of the upper supporting part (160), and the driving device (190) is in driving connection with the rotary part (120) through the torque limiter (210).

9. The sharpening mechanism as recited in any one of claims 1-8, characterized in that the protective shield (110) comprises a protective sidewall (114) and a protective plate (113), the protective plate (113) being disposed opposite the first opening (112); the protective side wall (114) is connected with the protective plate (113), and the protective side wall (114) is of an annular structure; the grinding mechanism further comprises:

a dust cap (220), the dust cap (220) being an annular structure, the dust cap (220) being disposed about the protective sidewall (114), the first opening (112) being disposed within the dust cap (220); wherein the dust cover (220) is telescopically arranged along the extension direction of the gyration central line.

10. The sharpening mechanism of claim 9 further comprising:

a fixed seat (230) arranged on the protective side wall (114);

one end of the protective elastic piece (240) is connected with the fixed seat (230), and the other end of the protective elastic piece (240) is connected with the dust cover (220).

11. The sharpening mechanism as recited in any one of claims 1 to 8, further comprising:

a detection piece (250), the detection piece (250) being provided on the rotation portion (120);

The sensor (260) is arranged on the protective cover (110), and when the sensing head of the sensor (260) continuously senses the detection sheet (250) within a preset time, the sensor (260) is in a first sensing state; when the sensing head does not sense the detection sheet (250) continuously within the preset time, the sensor (260) is in a second sensing state, so that the grinding mechanism sends an alarm signal when the sensor (260) is in the first sensing state or the second sensing state continuously.

12. A sharpening device comprising a sharpening mechanism, wherein the sharpening mechanism is as claimed in any one of claims 1 to 11.

Technical Field

The invention relates to the field of building equipment, in particular to a polishing mechanism and a polishing device with the same.

Background

After the concrete wall of the floor building is poured, the concave-convex points of the wall surface are required to be polished to certain flatness. For concrete wall polishing, the traditional process mostly adopts a manual hand-held polishing mode. At present, no full-automatic grinding device for batch production is available on the market.

However, existing sanding devices also employ only a sanding head similar to that mounted on a hand-held sander, which is typically a separate sanding disc. Because the surface area of the polishing disc is limited, the polishing efficiency is low when a smaller polishing disc is used for polishing, and a driving device with higher power is needed when a larger polishing disc is used for polishing, so that the power consumption and waste are caused.

Disclosure of Invention

The invention mainly aims to provide a grinding mechanism and a grinding device with the same, and aims to solve the problem that the grinding mechanism in the prior art is low in grinding efficiency.

In order to achieve the above object, according to one aspect of the present invention, there is provided a grinding mechanism comprising: the protective cover is provided with an accommodating space and a first opening, and the first opening is communicated with the accommodating space; the rotary part is arranged in the accommodating space, is connected with the protective cover and is rotatably arranged relative to the protective cover; the polishing assemblies are arranged on the rotating part so as to rotate around the rotating center line of the rotating part; each polishing assembly comprises a polishing disc, the polishing end of the polishing disc protrudes out of the protective cover through the first opening, and each polishing disc rotates relative to the rotary part.

Furthermore, the polishing mechanism also comprises a gear ring which is arranged in the protective cover and is fixedly connected with the protective cover; the subassembly of polishing still includes: the transmission shaft is inserted on the rotary part, and the polishing disc is connected with the transmission shaft; and the gear is connected with the transmission shaft and meshed with the gear ring so as to drive the transmission shaft and the gear to rotate around the rotation center line of the rotation part when the rotation part rotates, so that the transmission shaft rotates relative to the rotation part under the action of the mutually meshed gear and gear ring.

Further, the grinding assembly further comprises: the pressing sheet is connected with the transmission shaft and pressed on the polishing disc, so that the polishing disc is abutted against the first shaft shoulder of the transmission shaft; the gasket is sleeved on the transmission shaft and is located between the first shaft shoulder and the polishing disc.

Further, the transmission shaft is provided with a first transmission end and a second transmission end which are oppositely arranged; grinding machanism still includes: the lower supporting part is fixedly connected with the rotating part and is positioned between the rotating part and the polishing disc; the lower supporting part is provided with a plurality of first avoidance holes, the first avoidance holes and the polishing assemblies are arranged in a one-to-one correspondence mode, and a transmission shaft of each polishing assembly sequentially penetrates through the rotating part and the first avoidance holes; go up the supporting part, with lower supporting part fixed connection, go up the supporting part and set up in the relative both sides of gear with lower supporting part, go up the supporting part and set up with the second transmission end of transmission shaft relatively.

Further, the grinding assembly further comprises: the damping ring is fixedly arranged at the second transmission end of the transmission shaft and is arranged between the upper supporting part and the second transmission end.

Further, the sharpening mechanism further comprises: one end of the first fastener is connected with the upper supporting part, and the other end of the first fastener penetrates through the gear ring and is connected with the lower supporting part.

Further, the sharpening mechanism further comprises: the protective ring is fixedly arranged on the lower supporting part, and the inner wall surface of the protective ring is attached to the outer wall surface of the gear ring.

Further, the protective cover comprises a protective plate, and the protective plate is arranged opposite to the first opening; grinding machanism still includes: the driving device comprises a driving main body and a driving end, and the driving main body is arranged on the protection plate and positioned on the outer side of the protection cover; the driving end is sequentially arranged through the protection plate and the upper supporting part in a penetrating manner; the torque limiter is arranged on one side, far away from the protection plate, of the upper supporting portion, and the driving device is in driving connection with the rotating portion through the torque limiter.

Further, the protective cover comprises a protective side wall and a protective plate, and the protective plate is arranged opposite to the first opening; the protective side wall is connected with the protective plate and is of an annular structure; grinding machanism still includes: the dust cover is of an annular structure and is arranged around the protective side wall, and the first opening is arranged in the dust cover; wherein, the dust cover is arranged telescopically along the extending direction of the rotation center line.

Further, the sharpening mechanism further comprises: the fixed seat is arranged on the protective side wall; one end of the protective elastic piece is connected with the fixed seat, and the other end of the protective elastic piece is connected with the dust cover.

Further, the sharpening mechanism further comprises: the detection piece is arranged on the rotary part; the sensor is arranged on the protective cover and is in a first sensing state when a sensing head of the sensor continuously senses the detection sheet within preset time; when the sensing head continuously does not sense the detection piece within the preset time, the sensor is in a second sensing state, so that the polishing mechanism sends an alarm signal when the sensor is continuously in the first sensing state or the second sensing state.

According to another aspect of the present invention, there is provided a grinding device comprising a grinding mechanism, wherein the grinding mechanism is the grinding mechanism described above.

The polishing mechanism comprises a protective cover, a rotary part and a plurality of polishing assemblies, wherein the rotary part is arranged in the protective cover and can be rotatably arranged relative to the protective cover; each grinding assembly is arranged on the rotary part so as to enable the grinding assembly to revolve around the rotary central line of the rotary part; each polishing assembly comprises a polishing disc, and each polishing disc rotates around the central line of the polishing disc. The plurality of grinding disks of the grinding mechanism can revolve and rotate, and the arrangement ensures that the plurality of grinding disks work simultaneously in the same plane, so that the grinding disks can directly obtain high-speed cutting rotation, the grinding quality is ensured, the grinding area is increased, and the problem of low grinding efficiency caused by limited grinding area of the conventional grinding disks is solved; and does not cause power consumption and waste.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic view of an angle of an embodiment of a sharpening mechanism according to the invention;

FIG. 2 shows a schematic view of another angle configuration of an embodiment of a sharpening mechanism according to the invention;

FIG. 3 illustrates a front view of an embodiment of a grinding mechanism according to the present invention;

FIG. 4 shows a cross-sectional view at section A-A of the sharpening mechanism of FIG. 3;

FIG. 5 illustrates a bottom view of an embodiment of a grinding mechanism according to the present invention;

FIG. 6 illustrates a top view of an embodiment of a grinding mechanism according to the present invention;

figure 7 shows an exploded view of an embodiment of a sharpening mechanism according to the invention;

figure 8 shows an exploded view of a sharpening assembly of a sharpening mechanism according to the present invention.

Wherein the figures include the following reference numerals:

110. a protective cover; 111. an accommodating space; 112. a first opening; 113. a protection plate; 114. a protective sidewall; 120. a turning part; 130. polishing the assembly; 131. grinding disc; 132. a drive shaft; 133. a gear; 134. tabletting; 135. a gasket; 136. a damping ring; 137. a first grinding bearing; 138. polishing the screw; 140. a ring gear; 150. a lower support section; 151. a first avoidance hole; 160. an upper support section; 170. a first fastener; 180. a guard ring; 190. a drive device; 210. a torque limiter; 220. a dust cover; 230. a fixed seat; 240. a protective elastic member; 250. detecting a sheet; 260. an inductor; 270. a dust suction port.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The present invention provides a polishing mechanism, please refer to fig. 1 to 8, comprising: a protective cover 110, the protective cover 110 having an accommodating space 111 and a first opening 112, the first opening 112 communicating with the accommodating space 111; a rotation part 120 disposed in the accommodation space 111, the rotation part 120 being connected to the protection cover 110 and rotatably disposed with respect to the protection cover 110; a plurality of grinding assemblies 130, each grinding assembly 130 being disposed on the revolving portion 120 so that the grinding assembly 130 rotates about a revolving center line of the revolving portion 120; each grinding assembly 130 includes a grinding disc 131, a grinding end of the grinding disc 131 protrudes from the protective cover 110 through the first opening 112, and each grinding disc 131 rotates relative to the revolving unit 120.

The grinding mechanism comprises a protective cover 110, a rotary part 120 and a plurality of grinding assemblies 130, wherein the rotary part 120 is arranged in the protective cover 110 and can be rotatably arranged relative to the protective cover 110; each of the grinding assemblies 130 is disposed on the revolving part 120 such that the grinding assemblies 130 revolve around a revolving center line of the revolving part 120; each grinding assembly 130 includes a grinding disc 131, each grinding disc 131 rotating about its grinding disc centerline. The plurality of grinding discs of the grinding mechanism can revolve and rotate, and the arrangement ensures that the plurality of grinding discs 131 work simultaneously in the same plane, so that the grinding discs can directly obtain high-speed cutting rotation, the grinding quality is ensured, the grinding area is increased, and the problem of low grinding efficiency caused by limited grinding area of the conventional grinding discs is solved; and does not cause power consumption and waste.

In specific implementation, the polishing mechanism includes three polishing assemblies 130, and the three polishing assemblies 130 are uniformly arranged on the rotating portion 120. Adopt three mill of polishing in the coplanar evenly distributed and simultaneous working, each mill of polishing respectively fixed mounting on respective transmission shaft, make the transmission shaft be connected with the gyration portion again, constitute the rotation system of three mill of polishing from this, guarantee that the mill of polishing can directly acquire fast-speed cutting rotation, guarantee the quality of polishing and improve the area of polishing, solved the problem of the limited inefficiency of polishing that leads to of current mill area of polishing.

In one embodiment, the turning portion 120 is a turning flange.

In this embodiment, the polishing mechanism further includes a gear ring 140, and the gear ring 140 is disposed in the protective cover 110 and is fixedly connected to the protective cover 110; the grinding assembly 130 further includes: a transmission shaft 132 inserted into the rotation part 120, the polishing disc 131 being connected to the transmission shaft 132; the gear 133 and the gear 133 are connected with the transmission shaft 132, and the gear 133 is meshed with the gear ring 140 to drive the transmission shaft 132 and the gear 133 to rotate around the rotation center line of the rotation part 120 when the rotation part 120 rotates, so that the transmission shaft 132 rotates relative to the rotation part 120 under the action of the gear 133 and the gear ring 140 meshed with each other. Still be provided with the gear on the transmission shaft of the installation of the dish of polishing, multiunit equipartition gear and ring gear are mutually supported, under the rotatory drive of gyration, realize the revolution system of a plurality of dishes of polishing, and revolution speed is the speed ratio of motor (being drive arrangement) rotational speed multiply ring gear and gear, the revolution speed of the three dish of polishing of effectual reduction, guarantee the even running of the operation of polishing, grinding device's the area of polishing has further been improved, it is less to have solved current dish area of polishing, the relatively poor problem of the quality of polishing. The simple mechanism synchronously realizes high-speed cutting rotation and low-speed revolution of the grinding disc under the condition of single power.

In a specific implementation, the gear 133 is disposed between the third shoulder of the transmission shaft 132 and the upper support 160; preferably, the gear 133 is disposed between the third shoulder of the drive shaft 132 and the damping ring 136.

In this embodiment, the grinding assembly 130 further includes: the pressing sheet 134 is connected with the transmission shaft 132, and the pressing sheet 134 is pressed on the polishing disc 131, so that the polishing disc 131 abuts against a first shaft shoulder of the transmission shaft 132; and the gasket 135 is sleeved on the transmission shaft 132 and is positioned between the first shaft shoulder and the grinding disc 131.

In the present embodiment, the transmission shaft 132 has a first transmission end and a second transmission end which are oppositely arranged; grinding machanism still includes: a lower support part 150, wherein the lower support part 150 is fixedly connected with the rotary part 120 and is positioned between the rotary part 120 and the grinding disc 131; the lower supporting part 150 has a plurality of first avoiding holes 151, the plurality of first avoiding holes 151 are disposed in one-to-one correspondence with the plurality of polishing assemblies 130, and the transmission shaft 132 of each polishing assembly 130 is sequentially disposed through the revolving part 120 and the first avoiding holes 151; and an upper support part 160 fixedly connected to the lower support part 150, wherein the upper support part 160 and the lower support part 150 are disposed at opposite sides of the gear 133, and the upper support part 160 is disposed opposite to the second transmission end of the transmission shaft 132.

In particular, the lower support 150 and the upper support 160 are both annular plates.

In this embodiment, the sharpening assembly 130 further comprises a damping ring 136 fixedly disposed at the second drive end of the drive shaft 132, the damping ring 136 being disposed between the upper support portion 160 and the second drive end. The gear passes through the damping ring to be fixed on the transmission shaft, and the damping ring can absorb some cutting axial impact, improves the life-span and the stability of mill, reduces the operation noise and reduces the vibration impact who transmits for the arm. In addition, damping ring 136 plays the axial cushioning effect of polishing, reduces the vibration nature in the gear working process, increases driven stationarity.

In particular implementation, damping ring 136 is secured to drive shaft 132 by a grinding screw 138.

In this embodiment, the sharpening assembly 130 further comprises a first sharpening bearing 137, the first sharpening bearing 137 being disposed between the swivel portion 120 and the second shoulder of the drive shaft 132.

In this embodiment, the grinding mechanism further includes a first fastening member 170, one end of the first fastening member 170 is connected to the upper supporting portion 160, and the other end of the first fastening member 170 is connected to the lower supporting portion 150 after passing through the gear ring 140.

Preferably, the first fastener 170 is a bolt.

In this embodiment, the polishing mechanism further includes a guard ring 180, the guard ring 180 is fixedly disposed on the lower support portion 150, and an inner wall surface of the guard ring 180 is attached to an outer wall surface of the gear ring 140. This arrangement prevents dust from the grinding operation from entering the gear meshing area.

Preferably, a dust ring is provided between the inner wall surface of the guard ring 180 and the outer wall surface of the ring gear 140, which further prevents dust of the grinding work from entering the gear meshing area.

In the present embodiment, the protective cover 110 includes a protective plate 113, and the protective plate 113 is disposed opposite to the first opening 112; grinding machanism still includes: the driving device 190 comprises a driving body and a driving end, wherein the driving body is arranged on the protection plate 113 and is positioned on the outer side of the protection cover 110; the driving end is arranged through the protection plate 113 and the upper supporting part 160 in sequence; and a torque limiter 210 arranged on one side of the upper support part 160 far away from the protection plate 113, wherein the driving device 190 is in driving connection with the rotation part 120 through the torque limiter 210. The torque limiter 210 is also a safety clutch or a safety coupling.

Preferably, the driving device 190 is a motor, the motor provides a cutting force of the polishing head, and the output power of the motor is divided into two parts, namely low-speed revolution cutting of each polishing disk and high-speed rotation cutting of three groups of polishing disks, so that the service life and the stability of the polishing disks are effectively improved, noise during operation is reduced, the energy consumption of the motor is saved, and the problem of waste of the driving power during independent operation of the existing polishing disk with a large area is solved. Among them, a hydraulic motor, an electric motor or a pneumatic motor.

In the present embodiment, the protective cover 110 includes a protective sidewall 114 and a protective plate 113, the protective plate 113 being disposed opposite to the first opening 112; the protective side wall 114 is connected with the protective plate 113, and the protective side wall 114 is of an annular structure; grinding machanism still includes: a dust cover 220, the dust cover 220 being an annular structure, the dust cover 220 being disposed around the protective sidewall 114, the first opening 112 being disposed within the dust cover 220; wherein the dust cover 220 is telescopically arranged along the extending direction of the revolution center line.

In this embodiment, the sharpening mechanism further comprises: a fixing seat 230 disposed on the protection sidewall 114; one end of the protective elastic member 240 is connected to the fixing base 230, and the other end of the protective elastic member 240 is connected to the dust cover 220. Preferably, the protective elastic member 240 is a spring. Preferably, the fixing seat 230 and the protection elastic member 240 are both plural, and the plural fixing seats 230 are arranged around the protection sidewall 114 at intervals in the circumferential direction. Like this, the end of polishing dish 131 does not laminate the wall during operation, and dust cover 220 exceeds the polishing dish in the polishing dish axis direction, and when the end of polishing compressed tightly the wall during operation, dust cover 220 receives the wall extrusion to make protection elastic component 240 compressed, and dust cover 220 moves back makes the operation of polishing dish and wall contact, will polish the in-process simultaneously and produce the dust restriction inside protection cover 110.

In this embodiment, the sharpening mechanism further comprises: a detection piece 250, the detection piece 250 being provided on the rotation portion 120; a sensor 260 disposed on the protective cover 110, wherein the sensor 260 is in a first sensing state when a sensing head of the sensor 260 continuously senses the sensing piece 250 within a predetermined time; when the sensing head does not sense the detection piece 250 continuously within the predetermined time, the sensor 260 is in the second sensing state, so that the polishing mechanism sends an alarm signal when the sensor 260 is in the first sensing state or the second sensing state continuously. Wherein, the sensor 260 is a sensor; the plurality of detection sheets 250 are disposed on the detection plate at intervals, and the sensing head of the sensor 260 is disposed toward the detection plate. The two predetermined times mentioned above may be the same time length or different time lengths.

In this embodiment, the protective cover 110 is provided with a dust suction port 270, and the dust suction port 270 is used for being connected with a dust suction pipe to recover dust generated in the polishing process and avoid environmental pollution.

The polishing mechanism effectively increases the polishing area during working, improves the polishing construction efficiency and polishing quality, and saves the driving power; the adaptability of the polishing device to the construction condition is enhanced, the polishing disc is protected from being damaged by foreign matters on the wall body, and the service life of the polishing disc is prolonged; the equipment cost is reduced, the energy consumption is reduced, and the construction noise is reduced.

The application of grinding machanism is used for carrying out the concrete wall operation of polishing, possesses shock attenuation, overload protection and lasts overload feedback function. The concrete structural form is as follows:

a dust suction port 270 is reserved on the protective cover 110 and connected with a dust collector hose, and dust generated in the polishing process is recycled to avoid environmental pollution. The dust cover 220 is connected to four fixing bases 230 uniformly fixed on the protection cover 110, and two ends of the protection elastic member 240 are connected to the dust cover 220 and the fixing bases 230, respectively. When the polishing end of the polishing disc 131 is not attached to the wall surface during operation, the dust cover 220 is higher than the polishing disc in the axis direction of the polishing disc, when the polishing end is pressed against the wall surface during operation, the dust cover 220 is compressed by the wall surface, the dust cover 220 moves backwards to enable the polishing disc to contact with the wall surface for operation, and dust generated in the polishing process is limited inside the protective cover 110.

The driving device 190 is fixed on the protective cover 110, an output shaft of the driving device is connected with the rotary part 120 through the torque limiter 210, and the driving device 190 outputs power to drive the rotary part 120 to rotate, namely, the three grinding discs are driven to rotate around the rotary axis of the output shaft of the driving device 190. When the grinding disc is overloaded due to the protrusion of the steel bar or the foreign matter during the working process, the torque limiter 210 can separate the output shaft of the driving device 190 (namely, the driving end of the driving device 190) from the rotating part 120, the output shaft of the driving device 190 freely rotates, the rotating part 120 stops rotating, when the overload is eliminated, the torque limiter 210 automatically resets, and the output shaft of the driving device 190 drives the rotating part 120 to rotate.

The sensor 260 is fixed on the protective cover 110, judges whether the polishing disc works normally or is in an overload state by detecting the detection sheet 250 fixed on the revolving part 120, and feeds back a signal to a control system of the polishing device; when the overload signal occurs intermittently and can quickly return to the polishing operation, the system does not process the overload signal, and when the overload signal exists continuously, the system stops the polishing operation and gives an alarm to prompt people to check the wall surface condition and related elements of the equipment.

The polishing disk is fixed to the transmission shaft 132 by a spacer 135 and a pressing plate 134, the gear 133 is fixed to the transmission shaft 132 by a damping ring 136 and a polishing screw 138, and the transmission shaft 132 is connected to the revolving portion 120 by a first polishing bearing 137. The gear 133, the transmission shaft 132, the first polishing bearing 137, the gasket 135, the polishing disc, the pressing sheet 134, the damping ring 136 and the polishing screw 138 constitute a rotation system (i.e., polishing assembly) of the polishing disc, and the three groups of polishing assemblies are uniformly distributed on the revolving part 120 and connected through the upper support part 160.

The gear ring 140 is fixed on the protective cover 110, the three groups of uniformly distributed gears 133 are matched with the gear ring 140, the gear ring 140 is fixed with the gear ring 133 to rotate under the rotation driving of the rotary part 120, and the rotation speed is the speed ratio of the gear ring 140 to the gear ring 133 multiplied by the rotating speed of a motor (namely the driving device 190); the output power of the motor is divided into two parts of revolution cutting of three grinding disks and cutting of high-speed rotation of three groups of grinding disks. Because receive the cutting impact of polishing and make the dish of polishing receive vibration impact at the operation in-process of polishing, damping ring 136 can absorb some cutting axial impact, improves the life-span and the stability of the dish of polishing and reduces the operation noise, reduces the vibration impact who transmits for the arm. The lower support 150 is fixed to the rotary part 120 and is coupled to the upper support 160 by three sets of bolts (i.e., first fastening members 170). The guard ring 180 is fixed on the lower support part 150 and rotates along with the polishing disc under the drive of the motor and the rotation part 120, and the inner side surface of the guard ring 180 is attached to the outer annular surface of the gear ring 140 through the dust ring, so that dust generated in polishing operation is prevented from entering a gear meshing area.

The application of the grinding mechanism can be applied to other large-scale curved surface grinding and polishing automation equipment and can also be applied to mechanical arms.

The invention also provides a polishing device which comprises the polishing mechanism, wherein the polishing mechanism is the polishing mechanism.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the grinding mechanism comprises a protective cover 110, a rotary part 120 and a plurality of grinding assemblies 130, wherein the rotary part 120 is arranged in the protective cover 110 and can be rotatably arranged relative to the protective cover 110; each of the grinding assemblies 130 is disposed on the revolving part 120 such that the grinding assemblies 130 revolve around a revolving center line of the revolving part 120; each grinding assembly 130 includes a grinding disc 131, each grinding disc 131 rotating about its grinding disc centerline. The plurality of grinding discs of the grinding mechanism can revolve and rotate, and the arrangement ensures that the plurality of grinding discs 131 work simultaneously in the same plane, so that the grinding discs can directly obtain high-speed cutting rotation, the grinding quality is ensured, the grinding area is increased, and the problem of low grinding efficiency caused by limited grinding area of the conventional grinding discs is solved; and does not cause power consumption and waste.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.