A finishing concrete screeding device

Abstract

The application relates to a finishing concrete leveling device, and relates to the technical field of leveling devices, which comprises a base, the upper end of the base is vertically provided with a vertical stake, the vertical stake is vertically and slidably connected with a mounting box on one side in the height direction, an opening is formed in one side of the mounting box in the length direction, a scraping plate is detachably connected in the mounting box, the scraping plate can rotate in the mounting box when being installed in the mounting box, and part of the scraping plate extends to the outside of the opening, a detection assembly for detecting the flatness of the scraping plate is arranged on the mounting box, a horizontal rod is arranged in the mounting box, the horizontal rod is located at one end away from the opening, the detection assembly comprises a detection block, the detection block is sleeved outside the horizontal rod, a cleaning assembly for cleaning the scraping plate is further arranged in the mounting box, and a limiting piece for limiting the position of the scraping plate is further arranged in the mounting box. The device can save manpower and improve work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of leveling devices, in particular to a decoration concrete leveling device. BACKGROUND

[0002] Concrete refers to the engineering composite material that is formed by cementing material to cement the aggregate into a whole. The commonly used concrete refers to the cement concrete that is formed by mixing cement as the cementing material, sand and stone as the aggregate, water (containing additives and admixtures) in a certain proportion, and then stirring. The cement concrete is also called ordinary concrete, which is widely used in civil engineering. In the construction process, the concrete is used to pave the floor mortar, and the concrete leveling device is used for paving.

[0003] When the embedded part required during decoration is embedded, the embedded part is leveled by the worker holding the screed plate, which is time-consuming and laborious. The screed plate will be worn out after long-term use. If the screed plate is worn out, the leveling effect will be poor, but it is difficult for the worker to check the flatness of the screed plate by naked eye. SUMMARY

[0004] In order to solve the above problems, the present application provides a decoration concrete leveling device.

[0005] In the first aspect, the present application provides a decoration concrete leveling device, which adopts the following technical scheme:

[0006] The decoration concrete leveling device comprises a base, a vertical pile is vertically arranged at the upper end of the base, a mounting box is vertically and slidably connected to one side of the vertical pile in the height direction, an opening is formed in one side of the mounting box in the length direction, a screed plate is detachably connected in the mounting box, the screed plate can rotate in the mounting box when the screed plate is installed in the mounting box, and part of the screed plate extends to the outside of the opening, a detection assembly for detecting the flatness of the screed plate is arranged on the mounting box, a horizontal rod is arranged in the mounting box, and the horizontal rod is located at the end away from the opening, the detection assembly comprises a detection block, the detection block is sleeved outside the horizontal rod, a cleaning assembly for cleaning the screed plate is arranged in the mounting box, and a limiting piece for limiting the rotation of the screed plate is arranged in the mounting box.

[0007] Optionally, a strip-shaped hole is formed in the upper end of the mounting box, a connecting rod one is arranged at the upper end of the detection block, the connecting rod one extends to the outside of the strip-shaped hole, a push block one is arranged at the end of the connecting rod one away from the detection block, a marking pen is vertically arranged on one side of the push block one in the length direction, a scale plate is arranged on the upper surface of the mounting box, the scale plate is arranged on one side of the strip-shaped hole, and the marking pen abuts against the scale plate.

[0008] Optionally, the cleaning assembly comprises a cleaning box arranged in the installation box, a water tank and a water pump are arranged in the cleaning box, a water pipe is in communication between the water tank and the water pump, a water outlet pipe is arranged at the lower end of the cleaning box, a plurality of spray heads are arranged at equal intervals on the water outlet pipe, the plurality of spray heads are arranged obliquely towards the direction of the screed plate, the water outlet end of the water pump is in communication with the water outlet pipe, and a drain hole is formed at the lower end of the installation box.

[0009] Optionally, a limiting groove is formed at one end of the limiting member close to the opening, and the screed plate is located in the limiting groove when the limiting member limits the screed plate.

[0010] Optionally, the limiting member is slidingly connected to the horizontal rod, a connecting rod two is arranged at the upper end of the limiting member, the connecting rod two extends to the outside of the strip-shaped hole, and a push block two is arranged at the end of the connecting rod two away from the limiting member two.

[0011] Optionally, support bearings are slidingly connected to both ends of the installation box in the length direction, the support bearings are located in the interior of the installation box, and the width of the outer ring of the support bearing is greater than the width of the inner ring.

[0012] Optionally, screws are threadedly connected to both ends of the installation box in the length direction, the two screws are oppositely arranged, the screws correspond to the support bearings one by one, the screws are fixedly connected with the inner rings of the corresponding support bearings, and when the screws rotate to the interior of the installation box, the outer rings of the support bearings abut against the side wall of the screed plate.

[0013] Optionally, a level is arranged at one side of the stake in the height direction, the level is arranged at the lower end of the stake, a vertical groove is formed at one side of the stake in the height direction, a threaded rod is vertically and rotatably connected in the stake, the threaded rod is located in the vertical groove, one side of the installation box in the length direction extends to the interior of the vertical groove and is threadedly connected with the threaded rod, a driving motor is vertically arranged at the upper end of the stake, and an output shaft of the driving motor extends to the vertical groove and is fixedly connected with the threaded rod coaxially.

[0014] In a second aspect, the application provides a screed plate wear detection method, comprising the following steps:

[0015] S1: rotating the screed plate to move from the outside of the installation box to the interior of the installation box;

[0016] S2: sliding the push block one along the length direction of the strip-shaped hole to drive the marking pen to draw a line on the scale plate; if the scale of the drawn line does not deviate, it indicates that the screed plate is not worn, and if the scale deviates, it indicates that the screed plate is worn and needs to be replaced.

[0017] In a third aspect, the application provides a screed plate cleaning method, comprising the following steps:

[0018] A1: Manipulate the water pump to spray water, and the water flows into the water outlet pipe and is sprayed from the several spray heads, and the water sprayed from the spray heads falls onto the upper surface of the screed plate;

[0019] A2: Slide the push block two along the length direction of the strip-shaped hole to drive the limiting member to slide, and the side wall of the limiting groove contacts the screed plate inside the mounting box to scrape off the concrete and sundries on the screed plate and clean the side of the screed plate inside the mounting box;

[0020] A3: Manipulate the screed plate to rotate to rotate the screed plate originally outside the mounting box to the inside of the mounting box;

[0021] A4: Repeat the step A2.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When leveling the embedded part, first move the leveling device to the position abutting against the wall surface, then manipulate the driving motor to rotate to drive the threaded rod to rotate, and then drive the mounting box and the screed plate to move, thereby realizing leveling of the embedded part without manual leveling by the screed plate, which can save labor;

[0024] 2. Rotate the screed plate outside the mounting box to the inside of the mounting box, slide the push block one along the length direction of the strip-shaped hole to drive the marking pen to draw a line on the scale plate; if the scale drawn is not offset, it means that the screed plate is not worn, and if the scale is offset, it means that the screed plate is worn and needs to be replaced; when replacing the screed plate, the other side of the screed plate can be first detected for wear; if not worn, the other side of the screed plate can be rotated to the outside of the mounting box for work, thereby improving work efficiency; if both sides of the screed plate are worn, the two threaded rods are screwed out of the mounting box, and then the screed plate can be removed and replaced, which shortens the replacement time and improves the work efficiency compared with the traditional screed tool;

[0025] 3. When cleaning the screed plate, start the water pump to spray the water in the water tank through the spray head, thereby washing the surface of the screed plate and improving the cleaning effect of the screed plate, and most of the residual concrete and sundries scraped off will fall from the drain hole for recycling or other processing by the workers. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic view of the overall structure of a decoration concrete leveling device.

[0027] Figure 2 It is a schematic view of the mounting box.

[0028] Figure 3It is a structure diagram highlighting the inside of the installation box.

[0029] Figure 4 It is a schematic diagram highlighting the drain hole.

[0030] Reference signs: 1, base; 2, upright post; 21, threaded rod; 22, driving motor; 23, vertical groove; 24, handle; 25, level; 3, installation box; 31, strip-shaped hole; 311, scale plate; 32, push block one; 321, detection block; 322, connecting rod one; 323, marking pen; 33, push block two; 331, limiting piece; 332, limiting groove; 333, connecting rod two; 34, screw rod; 35, supporting bearing; 36, scraping plate; 37, cleaning box; 371, water pump; 372, water tank; 373, water inlet pipe; 374, spray head; 375, drain hole; 38, horizontal rod; 39, opening. DETAILED DESCRIPTION

[0031] The application will be further described in detail below in combination with all the drawings.

[0032] The application discloses a decoration concrete leveling device.

[0033] Reference Figure 1 and Figure 2 A decoration concrete leveling device, comprising a base 1, the upper end of the base 1 is vertically provided with an upright post 2, one side of the upright post 2 in the height direction is vertically and slidably connected with an installation box 3, one side of the installation box 3 in the length direction is provided with an opening 39, the installation box 3 is detachably connected with a scraping plate 36, when the scraping plate 36 is installed in the installation box 3, the scraping plate 36 can rotate in the installation box 3, and part of the scraping plate 36 extends to the outside of the opening 39, and the installation box 3 is provided with a detection assembly for detecting the flatness of the scraping plate 36.

[0034] Reference Figure 1 and Figure 3 The inside of the installation box 3 is provided with a horizontal rod 38, the horizontal rod 38 is located at one end away from the opening 39, the detection assembly comprises a detection block 321, the detection block 321 is sleeved outside the horizontal rod 38, the installation box 3 is further provided with a cleaning assembly for cleaning the scraping plate 36, and the installation box 3 is further provided with a limiting piece 331 for limiting the rotation of the scraping plate 36. When leveling, the base 1 is abutted against the wall surface, then the installation box 3 is slid along the height direction of the upright post, and the scraping plate 36 is driven to move, so that the leveling of the embedded part is realized, manual leveling of the scraping plate 36 is not needed, and the effect of saving labor can be achieved.

[0035] Reference Figure 1 and Figure 4The one side of the pile 2 in the height direction is provided with a level 25, the level 25 is arranged at the lower end of the pile 2, the one side of the pile 2 in the height direction is provided with a vertical groove 23, the vertical groove 23 is internally provided with a threaded rod 21, the threaded rod 21 is internally provided with the installation box 3, the one side of the installation box 3 in the length direction extends to the inside of the vertical groove 23 and is threadedly connected with the threaded rod 21, the upper end of the pile 2 is vertically provided with a driving motor 22, the output shaft of the driving motor 22 extends to the inside of the vertical groove 23 and is fixedly connected with the threaded rod 21 in a coaxial manner; the two sides of the pile 2 in the height direction are both provided with a handle 24, the staff can take the handle 24 to drive the leveling device to move, after the base 1 is abutted against the wall surface, the pile 2 is in a horizontal state at this time, the level 25 can check the levelness of the pile 2, then the driving motor 22 is operated to rotate, the threaded rod 21 is driven to rotate, and then the installation box 3 and the screed plate 36 are driven to move, so that the leveling of the embedded part is realized, and the manual leveling of the screed plate 36 by the staff is not needed, and the effect of saving labor can be achieved.

[0036] With reference to Figure 3 and Figure 4 After the leveling is completed, the cleaning assembly can be used to clean the screed plate 36; the cleaning assembly comprises a cleaning box 37 arranged in the installation box 3, the inside of the cleaning box 37 is provided with a water tank 372 and a water pump 371, the water tank 372 and the water pump 371 are communicated through a water pipe, the lower end of the cleaning box 37 is provided with a water outlet pipe, a plurality of nozzles 374 are arranged on the water outlet pipe at equal intervals, the plurality of nozzles 374 are arranged in an inclined manner towards the direction of the screed plate 36, the water outlet end of the water pump 371 is communicated with the water outlet pipe, and the lower end of the installation box 3 is provided with a drain hole 375.

[0037] With reference to Figure 2 and Figure 3 One end of the limiting piece 331 close to the opening 39 is provided with a limiting groove 332, and the screed plate 36 is located in the limiting groove 332 when the limiting piece 331 limits the screed plate 36; the limiting piece 331 is slidingly connected to the horizontal rod 38, the upper end of the limiting piece 331 is provided with a connecting rod two 333, the upper end of the installation box 3 is provided with a strip-shaped hole 31, the connecting rod two 333 extends to the outside of the strip-shaped hole 31, and one end of the connecting rod two 333 away from the limiting piece 331 is provided with a push block two 33; when the screed plate 36 is cleaned, first, the push block two 33 is slid to slide the limiting piece 331 away from the screed plate 36, so as to release the fixing of the screed plate 36, then the screed plate 36 originally located outside the installation box 3 is rotated to the inside of the installation box 3, then the limiting piece 331 is sleeved outside the screed plate 36 to fix the screed plate 36, and then the water pump 371 is started, the water in the water tank 372 is sprayed out from the nozzles 374, the surface of the screed plate 36 is washed, and the cleaning effect of the screed plate 36 is improved.

[0038] Referring to Figure 2 and Figure 3 , the upper end of the water tank 372 is provided with a water inlet pipe 373, the upper end of the water inlet pipe 373 extends to the upper end of the mounting box 3, and if water needs to be added to the water tank 372, water can be added to the inside of the water tank 372 from the water inlet pipe 373.

[0039] Referring to Figures 2 to 4 , the operating push block two 33 slides along the length direction of the strip-shaped hole 31, and in the sliding process, the limiting piece two 331 is in contact with the concrete attached to the screed plate 36, thereby scraping off the concrete on the outer surface of the screed plate 36, and most of the residual concrete and debris scraped off will fall from the drain hole 375, facilitating the recycling or other processing of the concrete and debris by the workers.

[0040] Referring to Figures 2 to 4 , after the original external screed plate 36 is cleaned, the flatness of the screed plate 36 can be detected by using the detection assembly, the upper end of the detection block 321 is provided with a connecting rod one 322, the connecting rod one 322 extends to the outside of the strip-shaped hole 31, and the end of the connecting rod one 322 away from the detection block 321 is provided with a push block one 32, one side of the push block one 32 in the length direction is vertically provided with a marking pen 323, and the upper surface of the mounting box 3 is provided with a scale plate 311, the scale plate 311 is arranged on one side of the strip-shaped hole 31, the marking pen 323 is in abutment with the scale plate 311, and the push block one 32 is slid along the length direction of the strip-shaped hole 31 to drive the marking pen 323 to draw a line on the scale plate 311.

[0041] Referring to Figures 2 to 4 , if the scale of the line drawn does not deviate, it means that the screed plate 36 is not worn, and if the scale deviates, it means that the screed plate 36 is worn and needs to be replaced, and when the screed plate 36 is replaced, the other side of the screed plate 36 can be first detected for wear, and if it is not worn, the other side of the screed plate 36 can be turned to the outside of the mounting box 3 for work, thereby improving work efficiency.

[0042] Referring to Figures 2 to 4 , both ends of the mounting box 3 in the length direction are slidably connected with support bearings 35, the support bearings 35 are located inside the mounting box 3, the width of the outer ring of the support bearing 35 is greater than the width of the inner ring, both ends of the mounting box 3 in the length direction are threadedly connected with screw rods 34, the two screw rods 34 are oppositely arranged, the screw rods 34 correspond one-to-one to the support bearings 35, the screw rods 34 are all fixedly connected with the inner rings of the corresponding support bearings 35, and when the screw rods 34 are rotated into the inside of the mounting box 3, the outer rings of the support bearings 35 are in abutment with the side walls of the screed plate 36; if both sides of the screed plate 36 are worn, both screw rods 34 are screwed out of the mounting box 3, and then the screed plate 36 can be removed and replaced, which shortens the replacement time and improves work efficiency compared with traditional screed tools.

[0043] The working principle of the decoration concrete leveling device is as follows: first, the base 1 is abutted against the wall surface, then the levelness of the stake 2 is checked through the level 25, then the driving motor 22 is operated to rotate, the threaded rod 21 is driven to rotate, and the installation box 3 and the screed plate 36 are driven to move, so that the leveling of the embedded part is realized, without the need of manually leveling the screed plate 36 by manual labor, and the effect of saving labor can be achieved; after the leveling is completed, the screed plate 36 can be cleaned, first, the second push block 33 is slid, the fixing of the screed plate 36 by the limiting piece 331 is released, then the screed plate 36 originally located outside is rotated into the installation box 3, at this time, the outer ring of the support bearing 35 is rotated, the screed plate 36 originally located outside enters into the installation box 3, then the limiting piece 331 is operated to fix the screed plate 36, the water pump 371 is started, and the water in the water tank 372 is sprayed through the nozzle 374, the water is sprayed from the nozzle 374, the surface of the screed plate 36 is washed, the second push block 33 is slid along the length direction of the strip-shaped hole 31, in the process of sliding, the limiting piece 331 is in contact with the concrete attached to the screed plate 36, and then the concrete on the outer surface of the screed plate 36 is scraped off, most of the residual concrete and sundries scraped off fall from the drain hole 375; after the screed plate 36 originally located outside is cleaned, the first push block 32 is slid along the length direction of the strip-shaped hole 31, and then the marking pen 323 is driven to move, if the line drawn by the marking pen 323 on the marking plate does not deviate, it represents that the screed plate 36 is not worn, and if the scale deviates, it represents that the screed plate 36 is worn and needs to be replaced, when the screed plate 36 is replaced, whether the other side of the screed plate 36 is worn can be detected first, if not, the other side of the screed plate 36 can be rotated to the outside of the installation box 3 to work, and then the working efficiency is improved, if both sides of the screed plate 36 are worn, the two screw rods 34 are screwed out of the installation box 3, and then the screed plate 36 can be removed and replaced, compared with the traditional screed tool, the replacement time is shortened, and the working efficiency is improved.

[0044] The embodiment of the application discloses a screed plate wear detection method, which comprises the following steps:

[0045] S1: the screed plate 36 is operated to rotate, and the screed plate 36 originally located outside the installation box 3 is rotated into the inside of the screed plate 36;

[0046] S2: the first push block 32 is slid along the length direction of the strip-shaped hole 31, and the marking pen 323 is driven to draw a line on the scale plate 311; if the scale of the drawn line does not deviate, it represents that the screed plate 36 is not worn, and if the scale deviates, it represents that the screed plate 36 is worn and needs to be replaced.

[0047] The embodiment of the present application discloses a kind of screed cleaning methods, comprising the following steps:

[0048] A1: manipulates water pump 371 to spray water, water flows to the inside of water outlet pipe, sprays from several spray heads 374, the water that spray head 374 sprays falls to the upper surface of screed 36;

[0049] A2: along the length direction of strip hole 31, sliding push block two 33, drive limiting member 331 to slide, the side wall of limiting groove 332 is contacted with the screed 36 in the inside of mounting box 3, and the concrete and sundries on the screed 36 are scraped, and the side of the screed 36 in the inside of mounting box 3 is cleaned;

[0050] A3: manipulates screed 36 to rotate, and rotates the screed 36 originally located at the outside of mounting box 3 to the inside of mounting box 3;

[0051] A4: repeat A2 step.

[0052] The above are the preferred embodiments of the present application, not limited by the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A decoration concrete leveling device, comprising a base (1), characterized in that: A stake (2) is vertically provided at the upper end of the base (1), and a mounting box (3) is vertically slidably connected to one side of the stake (2) in the height direction. An opening (39) is provided on one side of the mounting box (3) in the length direction. A scraping plate (36) is detachably connected to the mounting box (3). When the scraping plate (36) is installed in the mounting box (3), it can rotate in the mounting box (3), and part of the scraping plate (36) extends to the outside of the opening (39). A detection component for detecting the flatness of the scraping plate (36) is provided on the mounting box (3). A horizontal rod (38) is provided inside the mounting box (3). The horizontal rod (38) is located at one end away from the opening (39). The detection component includes a detection block (321). The detection block (321) is sleeved on the outside of the horizontal rod (38). A cleaning component for cleaning the scraping plate (36) is also provided in the mounting box (3). A limiting member (331) for limiting the rotation of the scraping plate (36) is also provided in the mounting box (3). The upper end of the installation box (3) is provided with a strip hole (31), the upper end of the detection block (321) is provided with a connecting rod (322), the connecting rod (322) extends to the outside of the strip hole (31), the end of the connecting rod (322) away from the detection block (321) is provided with a push block (32), and a marking pen (323) is vertically provided on one side of the push block (32) in the length direction. The upper surface of the installation box (3) is provided with a scale plate (311), the scale plate (311) is provided on one side of the strip hole (31), and the marking pen (323) is in contact with the scale plate (311).

2. A finishing concrete leveling device according to claim 1, characterized in that: The cleaning assembly comprises a cleaning box (37) arranged inside the installation box (3), a water tank (372) and a water pump (371) are arranged inside the cleaning box (37), a water pipe is connected between the water tank (372) and the water pump (371), a water outlet pipe is arranged at the lower end of the cleaning box (37), a plurality of nozzles (374) are arranged at equal intervals on the water outlet pipe, and the plurality of nozzles (374) are inclined toward the direction of the scraping plate (36), the water outlet end of the water pump (371) is connected to the water outlet pipe, and a sewage discharge hole (375) is opened at the lower end of the installation box (3).

3. The finishing concrete leveling device according to claim 1, characterized in that: A limiting groove (332) is provided at one end of the limiting member (331) close to the opening (39); when the limiting member (331) limits the scraping plate (36), the scraping plate (36) is located inside the limiting groove (332).

4. A finishing concrete leveling device according to claim 3, characterized in that: The limiting member (331) is slidably connected to the horizontal rod (38), and a second connecting rod (333) is provided at the upper end of the limiting member (331). The second connecting rod (333) extends to the outside of the strip hole (31), and a second pushing block (33) is provided at one end of the second connecting rod (333) away from the second limiting member (331).

5. The finishing concrete leveling device according to claim 1, characterized in that: Both ends of the installation box (3) in the length direction are slidably connected with support bearings (35), and the support bearings (35) are located inside the installation box (3), and the width of the outer ring of the support bearing (35) is greater than the width of the inner ring.

6. The finishing concrete leveling device according to claim 5, characterized in that: Both ends of the installation box (3) in the length direction are threadedly connected with screw rods (34), the two screw rods (34) are arranged opposite to each other, the screw rods (34) correspond to the support bearings (35) one by one, and the screw rods (34) are fixedly connected to the inner ring of the corresponding support bearing (35). When the screw rods (34) rotate to the inside of the installation box (3), the outer ring of the support bearing (35) abuts against the side wall of the scraper plate (36).

7. The finishing concrete leveling device according to claim 1, characterized in that: A level meter (25) is provided on one side of the height direction of the pile (2), and the level meter (25) is provided at the lower end of the pile (2). A vertical slot (23) is provided on one side of the height direction of the pile (2). A threaded rod (21) is vertically rotatably connected in the pile (2), and the threaded rod (21) is located inside the vertical slot (23). One side of the mounting box (3) in the length direction extends to the inside of the vertical slot (23) and is threadedly connected to the threaded rod (21). A driving motor (22) is vertically provided at the upper end of the pile (2), and an output shaft of the driving motor (22) extends into the vertical slot (23) and is coaxially fixedly connected to the threaded rod (21).

8. A method for detecting scraper plate wear, characterized in that: Using the decoration concrete leveling device according to claim 1 to detect wear of the scraping plate comprises the following steps: S1: operating the scraping plate (36) to rotate, and rotating the scraping plate (36) originally located outside the installation box (3) to the inside of the scraping plate (36); S2: Slide the push block (32) along the length direction of the strip hole (31) to drive the marking pen (323) to mark the scale plate (311); if the marked scale does not shift, it means that the scraping plate (36) is not worn. If the scale shifts, it means that the scraping plate (36) is worn and needs to be replaced. When replacing the scraping plate (36), first check whether the other side of the scraping plate (36) is worn. If it is not worn, the other side of the scraping plate (36) can be rotated to the outside of the installation box (3) to work.

9. A method for cleaning a scraping plate, characterized in that: Using the decoration concrete leveling device according to claim 4 to clean the scraping plate comprises the following steps: A1: Operate the water pump (371) to spray water, the water flows into the water outlet pipe, and is sprayed from a plurality of nozzles (374). The water sprayed from the nozzles (374) falls onto the upper surface of the scraping plate (36); A2: Slide the push block 2 (33) along the length direction of the strip hole (31), driving the limiting member (331) to slide, and the side wall of the limiting groove (332) contacts the scraping plate (36) located inside the installation box (3), scraping off the concrete and debris on the scraping plate (36), and cleaning the side of the scraping plate (36) located inside the installation box (3); A3: Operate the scraping plate (36) to rotate, and rotate the scraping plate (36) originally located outside the installation box (3) to the inside of the installation box (3); A4: Repeat step A2.

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