Anti-dead-corner wall surface polishing device

Abstract

The invention discloses an anti-dead-corner wall surface polishing device. The device comprises a movable base; the fourth swing rod is connected to the inner side of the middle connecting seat through a hinge; the polishing plate is connected to the front end face of the polishing seat in a sliding manner; the polishing driving part is fixedly connected to the rear end face of the polishing seat; the sliding polishing transmission mechanism is arranged in the polishing seat, and the polishing driving part drives the polishing plate to slide left and right through the sliding polishing transmission mechanism; the number of the rotary grinding wheels is three, and the three rotary grinding wheels are rotationally connected to the front end face of the polishing plate; and the rotary transmission mechanism is arranged at the front part of the polishing seat. Polishing dead angles are effectively reduced, the wall surface polishing effect is improved, the folding rate is high, movement is convenient, and the problems that an existing polishing machine is large in size, inconvenient to carry, difficult to polish and low in construction efficiency, and dead angles exist are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of decoration construction devices, in particular to a dead angle prevention wall polishing device. Background Art

[0002] During the wall decoration construction process, in order to ensure the flatness and smoothness of the wall, the wall is generally polished. In addition to manual polishing, the wall is also polished by a wall polishing machine. The existing wall polishing machine generally polishes by arranging polishing parts on the bracket body.

[0003] For example, the patent with application number CN202010215849.6 discloses a wall polishing machine that can automatically detect flatness, including a car body, a moving device is provided on the car body, a polishing device is provided on the upper side of the car body, and the polishing device includes a support block provided on the upper end face of the car body, the support block is provided with a roller groove opening backward, a second rotating shaft is rotatable between the upper and lower walls of the roller groove, a polishing roller with a rear end extending outward is provided on the second rotating shaft, and a reversing device is provided in the car body, and the reversing device is used to automatically switch the position of the polishing device. The present invention can automatically monitor the flatness of the wall while grinding and polishing the wall. When a problematic grinding position is detected, the polishing machine automatically stops moving and re-grinds and polishes the position that does not meet the flatness requirements to ensure the quality of polishing. There is no need to re-inspect the wall later, which saves time.

[0004] However, the existing wall polishing machine bracket is large in size, and it is inconvenient to go up and down the stairs frequently when changing the construction position. At the same time, the existing wall construction machine generally adopts a rotary method for polishing. There are dead corners in places such as corners, which are difficult to polish. Manual polishing is required, which is cumbersome to operate and has low construction efficiency. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a wall polishing device with anti-dead angle, which can realize wall polishing in all directions up and down by adopting a swinging lifting structure. At the same time, by combining sliding polishing and rotary polishing, it effectively reduces the occurrence of polishing dead angles and improves the wall polishing effect. At the same time, it has a simple structure, low cost, high folding rate, and is easy to move, which is suitable for the work requirements of decoration construction.

[0006] The present invention provides a purpose and effect of a dead angle prevention wall polishing device, which specifically includes a movable base; a first swinging rod, wherein the first swinging rod is provided with two pieces, and the two first swinging rods are hingedly connected to the left and right sides of the upper portion of the movable base respectively; a second swing link, wherein the second swing link is provided with two pieces, and the two second swing links are hingedly connected to the left and right sides of the upper portion of the movable base, respectively, and the hinge connection point of the second swing link is located directly above the hinge connection point of the first swing link; A lifting drive member, wherein the lifting drive member is hingedly connected to the top of the movable base, and a piston rod of the lifting drive member is hingedly connected to the two sets of second swing arms at the same time; an intermediate connecting seat hingedly connected to the tops of the first swinging rod and the second swinging rod; a third swinging link hingedly connected to an inner side of the middle connecting seat; a fourth swinging link hingedly connected to the inner side of the middle connecting seat; a polishing seat hingedly connected to the front ends of the third swinging rod and the fourth swinging rod; A polishing plate slidably connected to the front end surface of the polishing seat; A polishing drive member, wherein the polishing drive member is fixedly connected to the rear end surface of the polishing seat; A sliding polishing transmission mechanism is provided inside the polishing seat, and the polishing drive member drives the polishing plate to slide left and right through the sliding polishing transmission mechanism; Rotary grinding wheels, wherein the rotary grinding wheels are provided in three pieces, and the three rotary grinding wheels are rotatably connected to the front end surface of the polishing plate; The rotary transmission mechanism is arranged at the front of the polishing seat.

[0007] Furthermore, the first swing arm and the second swing arm on the same side are arranged in parallel, and the first swing arm, the second swing arm, the movable base and the middle connecting seat together form a hinge parallelogram structure.

[0008] Furthermore, the second swing arm includes: a synchronous driving gear, the synchronous driving gear being coaxially fixedly connected to the hinge connecting shaft on the second swing arm; The third swing arm includes a synchronous driven gear, which is coaxially fixedly connected to the bottom rotating shaft of the third swing arm. The synchronous driving gear and the synchronous driven gear are meshed to form a gear transmission mechanism.

[0009] Furthermore, the third swing arm and the fourth swing arm are installed in parallel, the third swing arm, the fourth swing arm, the first swing arm and the second swing arm are equal in length, and the intermediate connecting seat, the third swing arm, the fourth swing arm and the polishing seat together form a hinge parallelogram structure.

[0010] Furthermore, the polishing seat includes a guide rail, which is fixedly connected to the front end surface of the polishing seat, and the polishing plate is slidably connected to the polishing seat through the guide rail.

[0011] Furthermore, the sliding polishing transmission mechanism includes: A polishing active bevel gear, wherein the polishing active bevel gear is coaxially fixedly connected to the rotating shaft of the polishing drive member; A first polishing transmission member, wherein the first polishing transmission member is rotatably connected to the interior of the polishing seat; The polishing driven bevel gear is coaxially fixedly connected to the top of the polishing first transmission member, and the polishing driven bevel gear is meshed with the polishing driving bevel gear to form a bevel gear transmission mechanism.

[0012] Furthermore, the sliding polishing transmission mechanism includes: A polishing driven sprocket, wherein the polishing driven sprocket is rotatably connected to the interior of the polishing seat; A polishing driving sprocket, wherein the polishing driving sprocket is coaxially fixedly connected to the bottom of the polishing first transmission member; The polishing transmission chain is connected to the polishing driven sprocket and the polishing driving sprocket. The polishing transmission chain, the polishing driven sprocket and the polishing driving sprocket together constitute a chain transmission mechanism.

[0013] Furthermore, the sliding polishing transmission mechanism includes: A sliding toggle member fixedly connected to a link of the polishing transmission chain; The driven slide is provided at the rear of the polishing plate, and the sliding toggle is slidably connected inside the driven slide.

[0014] Furthermore, the rotary transmission mechanism includes: Polishing rotary drive racks, wherein the polishing rotary drive racks are provided with three pieces in total, and the three polishing rotary drive racks are fixedly connected to the front end surface of the polishing seat; The rotary polishing driven gear is coaxially fixedly connected to the rear end face of the rotary grinding wheel, and the polishing rotation driving rack is meshed with the rotary polishing driven gear to form a gear rack transmission mechanism.

[0015] Furthermore, the three groups of rotary grinding wheels are arranged in a staggered manner in a "<" shape, and polishing pads are provided on the front end surfaces of the rotary grinding wheels and the polishing plates.

[0016] Beneficial effects: The polishing device of the present invention adopts a swinging lifting structure to realize wall polishing in all directions up and down. At the same time, by combining sliding polishing and rotary polishing, the occurrence of polishing dead angles is effectively reduced, and the wall polishing effect is improved. At the same time, it has a simple structure, low cost, high folding rate, and is easy to move, which is suitable for the work requirements of decoration construction.

[0017] In addition, the lifting drive member drives the second swing arm to swing, and the second swing arm drives the hinge parallelogram structure formed by the first swing arm, the second swing arm, the movable base, and the intermediate connecting seat to deform, while ensuring that the intermediate connecting seat is always in a vertical state. Relative rotation occurs between the second swing arm and the intermediate connecting seat, and the second swing arm drives the third swing arm to swing in the opposite direction by the same angle relative to the intermediate connecting seat through a gear transmission mechanism formed by the meshing of a synchronous driving gear and a synchronous driven gear. The third swing arm drives the hinge parallelogram structure formed by the intermediate connecting seat, the third swing arm, the fourth swing arm, and the polishing seat to deform, while ensuring that the polishing seat moves in the vertical direction. The folding rate is high, and comprehensive polishing from top to bottom can be achieved, and the polishing is more comprehensive. At the same time, it is convenient to move, which meets the needs of frequent ups and downs in decoration construction.

[0018] In addition, the polishing drive member drives the polishing first transmission member to rotate through the bevel gear transmission mechanism composed of the polishing driven bevel gear and the polishing active bevel gear. The polishing first transmission member drives the polishing transmission chain to move through the chain transmission mechanism composed of the polishing transmission chain, the polishing driven sprocket and the polishing active sprocket. The polishing transmission chain drives the polishing plate to slide through the sliding toggle member; the rotary grinding wheel is driven to rotate under the action of the gear rack transmission mechanism composed of the polishing rotation drive rack and the rotary polishing driven gear. The rotary grinding wheel is staggered in a "<" shape to achieve polishing of most wall surfaces. At the same time, the left and right sliding of the polishing plate can achieve polishing of corners, effectively reducing polishing dead angles and improving the polishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall axonometric structure of the wall polishing device according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the rear axonometric structure of the wall polishing device according to an embodiment of the present invention.

[0021] Figure 3 It is a schematic diagram of the axonometric structure of the polishing seat transmission of the wall polishing device according to an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the axonometric structure of the sliding polishing transmission mechanism of the wall polishing device according to an embodiment of the present invention.

[0023] Figure 5 It is a schematic diagram of the axonometric structure of the rotary grinding wheel transmission of the wall polishing device according to an embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the axonometric structure of the polishing plate transmission of the wall polishing device according to an embodiment of the present invention.

[0025] Figure 7It is a schematic diagram of the axonometric structure of the polishing transmission chain of the wall polishing device according to an embodiment of the present invention.

[0026] Figure 8 It is a schematic diagram of the axonometric structure of the polishing plate of the wall polishing device according to an embodiment of the present invention.

[0027] In the figure: 1. Moving base; 2. Lifting drive member; 3. First swing arm; 4. Second swing arm; 401. Synchronous driving gear; 5. Intermediate connecting seat; 6. Third swing arm; 601. Synchronous driven gear; 7. Fourth swing arm; 8. Polishing seat; 801. Polishing rotating drive rack; 802. Guide rail; 9. Polishing drive member; 901. Polishing driving bevel gear; 10. Polishing first transmission member; 1001. Polishing driven bevel gear; 1002. Polishing driving sprocket; 11. Polishing driven sprocket; 12. Polishing transmission chain; 1201. Sliding toggle member; 13. Polishing plate; 1301. Driven slide; 14. Rotary grinding wheel; 1401. Rotary polishing driven gear. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example: Figures 1 to 8 As shown: This embodiment provides a blind angle prevention wall polishing device, which includes a movable base 1; A first swinging rod 3, which is provided with two pieces in total, and the two first swinging rods 3 are hingedly connected to the left and right sides of the upper portion of the mobile base 1 respectively; The second swinging lever 4 is provided with two pieces in total. The two second swinging levers 4 are hingedly connected to the left and right sides of the upper portion of the mobile base 1, respectively. The hinge connection point of the second swinging lever 4 is located directly above the hinge connection point of the first swinging lever 3; A lifting drive member 2 is hingedly connected to the top of the mobile base 1, and a piston rod of the lifting drive member 2 is hingedly connected to two sets of second swing rods 4; An intermediate connecting seat 5 is hingedly connected to the top of the first swinging rod 3 and the second swinging rod 4; a third swinging link 6, which is hinged to the inner side of the middle connecting seat 5; A fourth swinging link 7 is hingedly connected to the inner side of the middle connecting seat 5; A polishing seat 8 is hingedly connected to the front ends of the third swinging rod 6 and the fourth swinging rod 7; A polishing plate 13 is slidably connected to the front end surface of the polishing seat 8; A polishing drive member 9, which is fixedly connected to the rear end surface of the polishing seat 8; Sliding polishing transmission mechanism, the sliding polishing transmission mechanism is arranged inside the polishing seat 8, and the polishing drive member 9 drives the polishing plate 13 to slide left and right through the sliding polishing transmission mechanism; Rotary grinding wheels 14, which are provided with three in total, and the three rotary grinding wheels 14 are rotatably connected to the front end surface of the polishing plate 13; The rotary transmission mechanism is arranged at the front of the polishing seat 8.

[0030] Among them, the first swing arm 3 and the second swing arm 4 on the same side are arranged in parallel, and the first swing arm 3, the second swing arm 4, the movable base 1, and the intermediate connecting seat 5 together constitute a hinge parallelogram structure. During use, the lifting drive 2 drives the second swing arm 4 to swing, and the second swing arm 4 drives the hinge parallelogram structure formed by the first swing arm 3, the second swing arm 4, the movable base 1, and the intermediate connecting seat 5 to deform, while ensuring that the intermediate connecting seat 5 is always in a vertical state.

[0031] The second swinging rod 4 includes: a synchronous driving gear 401, which is coaxially fixedly connected to the hinge connecting shaft on the second swinging rod 4; The third swing arm 6 includes: a synchronous driven gear 601, which is coaxially fixedly connected to the bottom rotating shaft of the third swing arm 6, and the synchronous driving gear 401 is meshed with the synchronous driven gear 601 to form a gear transmission mechanism. In use, when the hinge parallelogram structure formed by the first swing arm 3, the second swing arm 4, the movable base 1, and the intermediate connecting seat 5 is deformed, relative rotation occurs between the second swing arm 4 and the intermediate connecting seat 5, and the second swing arm 4 drives the third swing arm 6 to swing in the opposite direction by the same angle relative to the intermediate connecting seat 5 through the gear transmission mechanism formed by the meshing of the synchronous driving gear 401 and the synchronous driven gear 601.

[0032] Among them, the third swing rod 6 and the fourth swing rod 7 are installed in parallel, the third swing rod 6, the fourth swing rod 7, the first swing rod 3, and the second swing rod 4 are equal in length, and the intermediate connecting seat 5, the third swing rod 6, the fourth swing rod 7, and the polishing seat 8 together constitute a hinge parallelogram structure. In use, when the third swing rod 6 swings relative to the intermediate connecting seat 5, the third swing rod 6 drives the hinge parallelogram structure formed by the intermediate connecting seat 5, the third swing rod 6, the fourth swing rod 7, and the polishing seat 8 to deform, and at the same time, ensures that the polishing seat 8 moves in the vertical direction.

[0033] Among them, the polishing seat 8 includes a guide rail 802, which is fixedly connected to the front end surface of the polishing seat 8. The polishing plate 13 is slidably connected to the polishing seat 8 through the guide rail 802. During use, the polishing plate 13 is guided by the guide rail 802.

[0034] Among them, the sliding polishing transmission mechanism includes: The polishing active bevel gear 901 is coaxially fixedly connected to the rotating shaft of the polishing driving member 9; Polishing the first transmission member 10, the polishing first transmission member 10 is rotatably connected to the inside of the polishing seat 8; The polishing driven bevel gear 1001 is coaxially fixedly connected to the top of the polishing first transmission member 10. The polishing driven bevel gear 1001 is meshed with the polishing active bevel gear 901 to form a bevel gear transmission mechanism. In use, the polishing drive member 9 drives the polishing first transmission member 10 to rotate through the bevel gear transmission mechanism composed of the polishing driven bevel gear 1001 and the polishing active bevel gear 901.

[0035] Among them, the sliding polishing transmission mechanism includes: A polishing driven sprocket 11 is rotatably connected to the interior of the polishing seat 8; The polishing driving sprocket 1002 is coaxially fixedly connected to the bottom of the polishing first transmission member 10; The polishing transmission chain 12 is connected to the polishing driven sprocket 11 and the polishing driving sprocket 1002. The polishing transmission chain 12, the polishing driven sprocket 11 and the polishing driving sprocket 1002 together constitute a chain transmission mechanism. In use, when the polishing first transmission member 10 rotates, the polishing first transmission member 10 drives the polishing transmission chain 12 to move through the chain transmission mechanism composed of the polishing transmission chain 12, the polishing driven sprocket 11 and the polishing driving sprocket 1002.

[0036] Among them, the sliding polishing transmission mechanism includes: A sliding toggle 1201, which is fixedly connected to a link of the polishing transmission chain 12; The driven slide 1301 is opened at the rear of the polishing plate 13, and the sliding toggle 1201 is slidably connected inside the driven slide 1301. During use, when the polishing transmission chain 12 moves, the polishing transmission chain 12 drives the polishing plate 13 to slide through the sliding toggle 1201.

[0037] Among them, the rotary transmission mechanism includes: Polishing rotation drive rack 801, the polishing rotation drive rack 801 is provided with three pieces in total, and the three polishing rotation drive racks 801 are fixedly connected to the front end surface of the polishing seat 8; The rotary polishing driven gear 1401 is coaxially fixedly connected to the rear end face of the rotary grinding wheel 14, and the polishing rotation drive rack 801 is meshed with the rotary polishing driven gear 1401 to form a gear rack transmission mechanism. During use, when the polishing seat 8 slides left and right, the rotary grinding wheel 14 is driven to rotate under the action of the gear rack transmission mechanism composed of the polishing rotation drive rack 801 and the rotary polishing driven gear 1401.

[0038] Among them, three groups of rotary grinding wheels 14 are staggered in a "<" shape, and polishing pads are provided on the front end surfaces of the rotary grinding wheels 14 and the polishing plates 13. During use, the polishing of most wall surfaces is achieved by the rotary grinding wheels 14 staggered in a "<" shape. At the same time, the polishing of the corners is achieved by the left and right sliding of the polishing plate 13, which effectively reduces the polishing dead angles.

[0039] Specific usage of this embodiment: In the present invention, the lifting drive member 2 drives the second swing rod 4 to swing, and the second swing rod 4 drives the first swing rod 3, the second swing rod 4, the movable base 1, and the intermediate connecting seat 5 to deform the hinge parallelogram structure, while ensuring that the intermediate connecting seat 5 is always in a vertical state, and relative rotation occurs between the second swing rod 4 and the intermediate connecting seat 5, and the second swing rod 4 drives the third swing rod 6 to swing in the opposite direction to the intermediate connecting seat 5 at the same angle through a gear transmission mechanism composed of a synchronous driving gear 401 and a synchronous driven gear 601 engaged with each other. The third swing rod 6 drives the hinge parallelogram structure composed of the intermediate connecting seat 5, the third swing rod 6, the fourth swing rod 7, and the polishing seat 8 to deform, while ensuring that the polishing seat 8 moves in the vertical direction; The optical drive component 9 drives the polishing first transmission component 10 to rotate through the bevel gear transmission mechanism composed of the polishing driven bevel gear 1001 and the polishing active bevel gear 901. The polishing first transmission component 10 drives the polishing transmission chain 12 to move through the chain transmission mechanism composed of the polishing transmission chain 12, the polishing driven sprocket 11 and the polishing active sprocket 1002. The polishing transmission chain 12 drives the polishing plate 13 to slide through the sliding toggle 1201; under the action of the gear rack transmission mechanism composed of the polishing rotation drive rack 801 and the rotary polishing driven gear 1401, the rotary grinding wheel 14 is driven to rotate. The rotary grinding wheels 14 arranged in a "<" shape are staggered to achieve polishing of most wall surfaces. At the same time, the left and right sliding of the polishing plate 13 is used to achieve polishing of corners, effectively reducing polishing dead angles.

[0040] The above description shows and describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be regarded as excluding other embodiments. Changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be within the scope of protection of the claims attached to the present invention.

Claims

1. A dead angle prevention wall polishing device, characterized in that: A dead angle prevention wall polishing device, comprising: a movable base (1); A first swinging rod (3), wherein the first swinging rod (3) is provided with two pieces, and the two first swinging rods (3) are hingedly connected to the left and right sides of the upper part of the movable base (1); A second swinging rod (4), wherein the second swinging rod (4) is provided with two pieces, and the two second swinging rods (4) are hingedly connected to the left and right sides of the upper portion of the movable base (1), respectively, and the hinge connection point of the second swinging rod (4) is located directly above the hinge connection point of the first swinging rod (3); A lifting drive member (2), the lifting drive member (2) is hingedly connected to the top of the movable base (1), and the piston rod of the lifting drive member (2) is hingedly connected to the two sets of second swing rods (4); An intermediate connecting seat (5), the intermediate connecting seat (5) being hingedly connected to the top of the first swinging rod (3) and the second swinging rod (4); a third swinging rod (6), the third swinging rod (6) being hingedly connected to the inner side of the middle connecting seat (5); a fourth swinging rod (7), the fourth swinging rod (7) being hingedly connected to the inner side of the middle connecting seat (5); A polishing seat (8), the polishing seat (8) being hingedly connected to the front end surfaces of the third swinging rod (6) and the fourth swinging rod (7); A polishing plate (13), wherein the polishing plate (13) is slidably connected to the front end surface of the polishing seat (8); A polishing drive member (9), wherein the polishing drive member (9) is fixedly connected to the rear end surface of the polishing seat (8); A sliding polishing transmission mechanism, wherein the sliding polishing transmission mechanism is arranged inside the polishing seat (8), and the polishing drive member (9) drives the polishing plate (13) to slide left and right through the sliding polishing transmission mechanism; A rotary grinding wheel (14), wherein the rotary grinding wheel (14) is provided with three pieces in total, and the three rotary grinding wheels (14) are rotatably connected to the front end surface of the polishing plate (13); A rotary transmission mechanism is provided at the front of the polishing seat (8).

2. The blind angle-proof wall polishing device according to claim 1, characterized in that: The first swing arm (3) and the second swing arm (4) on the same side are arranged in parallel, and the first swing arm (3), the second swing arm (4), the movable base (1) and the intermediate connecting seat (5) together form a hinge parallelogram structure.

3. The blind angle-preventing wall polishing device according to claim 2, characterized in that: The second swinging rod (4) comprises: a synchronous driving gear (401), wherein the synchronous driving gear (401) is coaxially fixedly connected to the hinge connection shaft on the second swinging rod (4); The third swing lever (6) includes a synchronous driven gear (601), the synchronous driven gear (601) is coaxially fixedly connected to the bottom rotating shaft of the third swing lever (6), and the synchronous driving gear (401) is meshed with the synchronous driven gear (601) to form a gear transmission mechanism.

4. The blind angle preventing wall polishing device according to claim 1, characterized in that: The third swing rod (6) and the fourth swing rod (7) are installed in parallel. The third swing rod (6), the fourth swing rod (7), the first swing rod (3), and the second swing rod (4) are of equal length. The intermediate connecting seat (5), the third swing rod (6), the fourth swing rod (7), and the polishing seat (8) together form a hinge parallelogram structure.

5. The blind angle-preventing wall polishing device according to claim 1, characterized in that: The polishing seat (8) comprises a guide rail (802), the guide rail (802) being fixedly connected to the front end surface of the polishing seat (8), and the polishing plate (13) being slidably connected to the polishing seat (8) via the guide rail (802).

6. The blind angle preventing wall polishing device according to claim 1, characterized in that: The sliding polishing transmission mechanism includes: A polishing active bevel gear (901), wherein the polishing active bevel gear (901) is coaxially fixedly connected to the rotating shaft of the polishing drive member (9); A first polishing transmission member (10), wherein the first polishing transmission member (10) is rotatably connected to the interior of the polishing seat (8); A polishing driven bevel gear (1001) is coaxially fixedly connected to the top of the polishing first transmission member (10), and the polishing driven bevel gear (1001) is meshed with the polishing driving bevel gear (901) to form a bevel gear transmission mechanism.

7. The blind angle-preventing wall polishing device according to claim 6, characterized in that: The sliding polishing transmission mechanism includes: A polishing driven sprocket (11), wherein the polishing driven sprocket (11) is rotatably connected to the interior of the polishing seat (8); A polishing driving sprocket (1002), the polishing driving sprocket (1002) being coaxially fixedly connected to the bottom of the polishing first transmission member (10); A polishing transmission chain (12) is connected to the polishing driven sprocket (11) and the polishing driving sprocket (1002). The polishing transmission chain (12), the polishing driven sprocket (11) and the polishing driving sprocket (1002) together constitute a chain transmission mechanism.

8. The blind angle-preventing wall polishing device according to claim 7, characterized in that: The sliding polishing transmission mechanism includes: A sliding toggle member (1201), wherein the sliding toggle member (1201) is fixedly connected to a link of the polishing transmission chain (12); A driven slide groove (1301) is provided at the rear of the polishing plate (13), and the sliding toggle member (1201) is slidably connected inside the driven slide groove (1301).

9. The blind angle preventing wall polishing device according to claim 1, characterized in that: The rotary transmission mechanism includes: A polishing rotary drive rack (801), wherein the polishing rotary drive rack (801) is provided with three pieces in total, and the three polishing rotary drive racks (801) are fixedly connected to the front end surface of the polishing seat (8); A rotary polishing driven gear (1401) is coaxially fixedly connected to the rear end face of the rotary grinding wheel (14); a polishing rotation driving rack (801) is meshed with the rotary polishing driven gear (1401) to form a gear rack transmission mechanism.

10. The blind angle preventing wall polishing device according to claim 1, characterized in that: The three groups of rotary grinding wheels (14) are arranged in a staggered manner in a "<" shape, and polishing pads are provided on the front ends of the rotary grinding wheels (14) and the polishing plates (13).

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