A brushing device and method for diaphragm wall

Abstract

The present invention provides a wall brushing device and a wall brushing method for diaphragm walls. The wall brushing device includes a grab trench cutter, a connection unit and a wall brushing unit; the grab trench cutter includes a grab, one end of the connection unit is detachably connected to the grab, and the other end is connected to the wall brushing unit. The wall brushing unit is detachably connected to the grab of the grab trench cutter, so that the body weight of the grab trench cutter can be fully utilized, effectively controlling the wall brushing unit to closely adhere to the concrete wall surface at the joint position of the diaphragm wall, effectively cleaning attachments such as muck on the concrete wall surface, thereby improving the wall brushing effect of the wall brushing device.

Description

Technical Field

[0001] The invention relates to the technical field of underground continuous wall construction, in particular to a wall brushing device and a wall brushing method for an underground continuous wall. Background Art

[0002] An underground continuous wall is a continuous wall set below the ground for the purpose of water interception, seepage prevention, soil retaining and load bearing. In the specific construction, the underground continuous wall is divided into many unit slots along the length direction of the underground continuous wall, and then a unit wall is formed in each unit slot. Multiple unit walls are connected in sequence to form an underground continuous wall.

[0003] At present, underground continuous wall trenching mainly adopts grab trenching technology and "grab and mill" trenching technology. The grab trenching machine used in the grab trenching technology has a large body weight and a relatively long body length, and can dynamically correct deviations, which greatly improves the verticality of the trenching. However, as the depth of underground continuous walls becomes deeper and deeper, the grab trenching technology is no longer suitable for the construction of ultra-deep underground continuous walls, especially ultra-deep underground continuous walls over 60 meters deep. The "grab and mill" technology is suitable for ultra-deep underground continuous walls and underground continuous walls in soft soil areas, meeting high requirements for trenching verticality, sediment thickness, etc.

[0004] like Figure 1 and Figure 2 As shown, the underground continuous wall includes three sections of unit walls, namely, two sections of the first-stage wall 1 and one section of the second-stage wall 3, and the second-stage wall 3 is located between the two sections of the first-stage wall 1. The first-stage wall 1 is grooved by "grabbing and milling". Usually, the soil above the 7th layer is directly grabbed by a grab groove machine; after entering the 7th layer of soil, the soil is milled by a hydraulic groove milling machine. For the groove construction of the second-stage wall 3, it is necessary to wait until the first-stage walls 1 on both sides reach the curing age, and then directly use the groove milling machine to cut the soil in the second-stage groove section 2 and roughen the concrete wall surface connecting the first-stage wall 1 and the second-stage wall 3. Although the concrete wall surface is relatively straight as a whole, there are pits and bumps on the concrete wall surface due to the existence of the milling cutter marks. It is easy to accumulate debris in these pits and it is not easy to clean. There are more or less debris and other attachments at the joints between the groove sections. The sources of these debris attachments mainly include: first, the flow of concrete in the unit wall during the pouring process pushes the debris to the joints of the slot sections; second, the debris left over during the slot section excavation process, such as the debris on the concrete wall surface at the joints mentioned in the previous paragraph. Normally, the length of the first-stage wall is 6600mm, the length of the second-stage slot section is 2200mm, the two first-stage walls are roughened by 300mm, the length of the second-stage wall is 2800mm, and the wall thickness is 1200mm.

[0005] During the construction of the first-phase wall, if the backfill on one side of the keyway pipe is not compact or in place, there will be an assembly gap at the connection of the keyway pipe composed of multiple sections. During the concrete pouring process of the first-phase wall, the flowing concrete will exert a squeezing force on the keyway pipe, causing the keyway pipe to bend, resulting in the surface of the keyway pipe not being able to maintain a vertical state. Sometimes, due to the squeezing force of the flowing concrete, the keyway pipe and the jacking equipment will be displaced together, causing the keyway pipe to tilt. Therefore, the actual condition of the concrete wall surface at the joint is likely not to be a vertical line perpendicular to the horizontal plane, but bent or tilted, which increases the difficulty of cleaning attachments such as muck.

[0006] The existing method of cleaning attachments such as muck mainly utilizes the self-weight of the brush wall cleaner to make the brush wall cleaner move up and down along the concrete wall surface as straight as possible. For a concrete wall surface that is not originally a vertical line, without lateral pressure, the brush wall cleaner composed of multiple rows of steel wire brushes cannot effectively adhere to the concrete wall surface for up and down movement. Especially after the excavation of an ultra-deep diaphragm wall, the brushing effect is not ideal, which is likely to reduce the concrete connection strength at the joint of the walls. After the foundation pit is excavated, problems such as water seepage are likely to occur at the joint of the walls. Therefore, brush wall cleaning is a crucial link in the construction of diaphragm walls, and the cleaning effect of the attachments on the concrete wall surface at the connection part will directly affect the water cutoff and seepage prevention, as well as the soil retaining and load-bearing quality of the diaphragm wall structure. Summary of the Invention

[0007] The present invention provides a brush wall cleaner and a brush wall method for diaphragm walls to solve the technical problem of the unsatisfactory brushing effect of the existing brush wall cleaners.

[0008] To solve the above technical problem, the present invention provides a brush wall cleaner for diaphragm walls, which includes a grab trench cutter, a connection unit, and a brush wall unit; the grab trench cutter includes a grab, one end of the connection unit is detachably connected to the grab, and the other end is connected to the brush wall unit.

[0009] Optionally, the grab includes two bucket parts for accommodating soil, each bucket part includes a first side surface, and claws for grabbing soil and connection holes for connecting the connection unit are arranged on the first side surface;

[0010] The number of the connection units is two. When the grab is in the biting state, the two connection units are respectively detachably connected to one first side surface, and the two connection units are symmetrically arranged on both sides of the grab.

[0011] Optionally, the connection unit includes a first connecting plate, a support plate, more than two diagonal bracing plates, and a second connecting plate;

[0012] The first connecting plate is connected to one end of the supporting plate, the first connecting plate and the supporting plate are perpendicular to each other, and the first connecting plate is provided with a hole for connecting the wall brushing unit;

[0013] Two or more diagonal bracing plates are spaced apart and arranged in parallel, one end of each diagonal bracing plate is connected to the first connecting plate, and the other end is connected to the supporting plate;

[0014] The second connecting plate is arranged on the two or more diagonal support plates and is perpendicular to the two or more diagonal support plates. The second connecting plate is provided with a waist-shaped hole for connecting the grab bucket.

[0015] Optionally, the connection unit further comprises two positioning plates and two positioning blocks, the two positioning plates are spaced apart and arranged at the other end of the support plate, and each positioning block is detachably connected to one of the positioning plates;

[0016] The bucket also includes two parallel second side surfaces, the second side surfaces are perpendicular to the first side surfaces, and the area enclosed by the first side surfaces and the second side surfaces is used to accommodate the grabbed soil; the distance between the two positioning plates is equal to the distance between the two second side surfaces, and the positioning plates are used to prevent the connecting unit from moving relative to the grab bucket.

[0017] Optionally, each of the positioning plates is provided with more than two through holes, and each of the positioning blocks is provided with a through hole that matches with the through hole on the positioning plate.

[0018] Optionally, the connection hole on the first side surface is a waist-shaped overflow hole provided by the grab bucket.

[0019] Optionally, the second connecting plate is parallel to the extension direction of the waist-shaped overflow hole.

[0020] Optionally, the wall brushing unit includes a wall brushing module, and the wall brushing module includes a brush, a scraper plate, a fixing plate, a telescopic adjustment rod and a connecting end plate;

[0021] The brush and the scraper are respectively fixed to one end of the fixed plate, the brush is located above the scraper, and the length of the brush extending from the fixed plate is greater than the length of the scraper extending from the fixed plate;

[0022] The other end of the fixing plate is connected to the telescopic adjustment rod;

[0023] The connecting end plate is provided with a hole for connecting with the other end of the connecting unit.

[0024] Optionally, the wall brushing unit includes two symmetrically arranged wall brushing modules, which are connected to each other on the side close to the telescopic adjusting rod; the two brushes extend towards the two ends of the straight line respectively along the straight line direction.

[0025] The present invention also provides a method for brushing the wall of a diaphragm wall, and the wall brushing method includes the following steps:

[0026] S1. Set the grab of the grab trencher to the biting state;

[0027] S2. Connect the connecting unit described in any one of the above to the grab of the grab trencher;

[0028] S3. Connect the wall brushing unit described in any one of the above to the connecting unit;

[0029] S4. Start the grab trencher to move the wall brushing unit up and down along the wall to be cleaned to clean the attachments on the wall.

[0030] The wall brushing device and the wall brushing method for a diaphragm wall provided by the present invention detachably connect the wall brushing unit to the grab of the grab trencher, so that the body weight of the grab trencher can be fully utilized, effectively controlling the wall brushing unit to closely adhere to the concrete wall surface at the joint position of the diaphragm wall, effectively cleaning the attachments such as muck on the concrete wall surface, thereby improving the wall brushing effect of the wall brushing device. Description of the Drawings

[0031] Figure 1 is a schematic plan view of the distribution of the first-phase wall and the second-phase groove section.

[0032] Figure 2 is a schematic plan view of the distribution of the first-phase wall and the second-phase wall.

[0033] Figure 3 is a schematic structural view of a wall brushing device for a diaphragm wall provided by an embodiment of the present invention.

[0034] Figure 4 is Figure 3 a partial enlarged view of the grab, the connecting unit and the wall brushing unit in

[0035] Figure 5 is Figure 3 the left view of

[0036] Figure 6 is Figure 5 a partial enlarged view of the grab, the connecting unit and the wall brushing unit in

[0037] Figure 7 is a schematic structural view of a connecting unit provided by an embodiment of the present invention.

[0038] Figure 8 is Figure 7 the left view of

[0039] Figure 9 is Figure 7 the top view of

[0040] Figure 10 is a schematic structural view of a positioning block provided by an embodiment of the present invention.

[0041] Figure 11 is Figure 10 the vertical sectional view of

[0042] Figure 12 Schematic structural view of the connection unit and the brush wall unit connected together provided by an embodiment of the present invention.

[0043] Figure 13 is Figure 12 the left view of

[0044] Figure 14 is Figure 12 the top view of

[0045] [Description of the reference numerals is as follows]:

[0046] First-phase wall - 1, second-phase groove section - 2, second-phase wall - 3;

[0047] Grab trencher - 4, connection unit - 5, brush wall unit - 6;

[0048] Grab - 41, connection hole - 411, bucket part - 412, first side - 4121, second side - 4122;

[0049] First connecting plate - 51, support plate - 52, inclined support plate - 53, second connecting plate - 54, positioning plate - 55, positioning block - 56, passing-through through-hole - 521;

[0050] Brush - 61, mud scraping plate - 62, fixing plate - 63, telescopic adjusting rod - 64, connecting end plate - 65. Detailed implementation manners

[0051] To make the objectives, advantages and features of the present invention clearer, the following further describes in detail a brush wall device and a brush wall method for a diaphragm wall of the present invention with reference to the accompanying drawings. It should be noted that the accompanying drawings are in very simplified forms and all use non-precise scales, and are only used to facilitate and clearly assist in explaining the objectives of the embodiments of the present invention.

[0052] This embodiment provides a brush wall device for a diaphragm wall, as shown in Figures 3 - 6As shown, the wall brushing device includes a grab trench cutter 4 (only a part of the grab trench cutter connecting the grab is drawn in the figure, and the body of the grab trench cutter located on the ground is not drawn), a connecting unit 5, and a wall brushing unit 6; the grab trench cutter 4 includes a grab 41, one end of the connecting unit 5 is detachably connected to the grab 41, and the other end is connected to the wall brushing unit 6. Among them, the shape and size of the connecting unit 5 can change according to the shape and size of the grab 41; the connecting unit 5 can be detachably connected to the grab 41 through the connecting hole 411 on the grab 41, or can be detachably connected to the grab 41 through other transfer structures; the wall brushing unit 6 is provided with a brush for cleaning attachments such as muck on the concrete wall surface at the joint position of the diaphragm wall.

[0053] The wall brushing device for the diaphragm wall provided in this embodiment detachably connects the wall brushing unit 6 to the grab 41 of the grab trench cutter 4, so that the body weight of the grab trench cutter 4 can be fully utilized, effectively controlling the wall brushing unit 6 to closely adhere to the concrete wall surface at the joint position of the diaphragm wall, effectively cleaning attachments such as muck on the concrete wall surface, thereby improving the wall brushing effect of the wall brushing device.

[0054] Optionally, as Figures 3 - 6 shown, the grab 41 includes two bucket parts 412 for accommodating soil, each bucket part 412 includes a first side surface 4121, on which claws for grabbing soil and a connecting hole 411 for connecting the connecting unit 5 are provided; the number of the connecting units 5 is two. When the grab 41 is in the biting state, the two connecting units 5 are respectively detachably connected to one first side surface 4121, and the two connecting units 5 are symmetrically arranged on both sides of the grab 41. Among them, there can be multiple connecting holes 411 on the grab 41, or they can be the slurry overflow holes or processed holes brought by the grab 41. Preferably, they are the slurry overflow holes brought by the grab 41, so as to prevent damage to the grab 41. Connecting one connecting unit 5 to each of the first side surfaces 4121 of the grab 41 can improve the stability of the wall brushing device.

[0055] Optionally, as Figures 6 - 9As shown, the connecting unit 5 includes a first connecting plate 51, a support plate 52, more than two diagonal support plates 53, and a second connecting plate 54; one end of the first connecting plate 51 is connected to the support plate 52, the first connecting plate 51 and the support plate 52 are perpendicular to each other, and the first connecting plate 51 is provided with holes for connecting the brush wall unit 6; more than two of the diagonal support plates 53 are arranged at intervals and in parallel, one end of each diagonal support plate 53 is connected to the first connecting plate 51, and the other end is connected to the support plate 52; the second connecting plate 54 is arranged on more than two of the diagonal support plates 53 and is perpendicular to more than two of the diagonal support plates 53, and the second connecting plate 54 is provided with kidney-shaped holes for connecting the grab 41. Among them, the number of holes for connecting the brush wall unit 6 provided on the first connecting plate 51 can be more than two; the number of kidney-shaped holes for connecting the grab 41 provided on the second connecting plate 54 can be more than two; the kidney-shaped hole can also be called a U-shaped hole. Through such a connecting unit 5, it is convenient to fix the connecting unit 5 on the grab 41.

[0056] Optionally, referring to Figure 9 and Figure 12 As shown, the holes for connecting the brush wall unit 6 on the first connecting plate 51 are kidney-shaped holes. This facilitates adjusting the position of the connecting unit 5 relative to the brush wall unit 6 and connecting the connecting unit 5 and the brush wall unit 6.

[0057] Optionally, as Figures 7 - 8 As shown, the support plate 52 is provided with a hand-through through-hole 521, and the hand-through through-hole 521 is close to the kidney-shaped holes on the second connecting plate 54. This facilitates a person to pass their hand through the hand-through through-hole 521 for operation when connecting the grab 41 and the connecting unit 5. The hand-through through-hole 521 can be in the shape of a circle or an ellipse, etc., and its size needs to be larger than a person's fist.

[0058] Optionally, as Figures 3 - 11As shown, the connecting unit 5 further includes two positioning plates 55 and two positioning blocks 56. The two positioning plates 55 are spaced apart at the other end of the support plate 52, and each positioning block 56 is detachably connected to one of the positioning plates 55; the bucket part 412 further includes two parallel second side surfaces 4122, the second side surfaces 4122 are perpendicular to the first side surface 4121, and the area surrounded by the first side surface 4121 and the second side surfaces 4122 is used to accommodate the soil mass to be grabbed; the distance between the two positioning plates 55 is equal to the distance between the two second side surfaces 4122, and the positioning plates 55 are used to prevent the connecting unit 5 from moving relative to the grab bucket 41. Among them, the positioning block 56 can be wedge-shaped. Setting the positioning block 56 can better fix the connecting unit 5 and prevent the connecting unit 5 from moving relative to the grab bucket 41, that is, prevent the connecting unit 5 from moving relative to the thickness direction of the diaphragm wall.

[0059] Optionally, as Figures 7 - 11 shown, each of the positioning plates 55 is provided with more than two through holes, and each of the positioning blocks 56 is provided with through holes that cooperate with the through holes on the positioning plates 55. If a bolt is used to fix the positioning plate 55 and the positioning block 56, the positioning block 56 may rotate relative to the positioning plate 55. The solution provided in this embodiment can prevent the positioning block 56 from rotating relative to the positioning plate 55.

[0060] Optionally, as Figures 3 - 6 shown, the connecting hole 411 on the first side surface 4121 is the waist-shaped slurry overflow hole that comes with the grab bucket 41. Using the slurry overflow hole that comes with the grab bucket 41 can avoid reprocessing the grab bucket 41.

[0061] Optionally, as Figures 3 - 7 shown, the second connecting plate 54 is parallel to the extending direction of the waist-shaped slurry overflow hole. This can facilitate the connection of the connecting plate and the grab bucket 41 by bolts.

[0062] Optionally, as Figures 12 - 14As shown, the wall brushing unit 6 includes a wall brushing module, and the wall brushing module includes a wire brush 61, a mud scraper 62, a fixing plate 63, a telescopic adjusting rod 64, and a connecting end plate 65; the wire brush 61 and the mud scraper 62 are respectively fixed to one end of the fixing plate 63, the wire brush 61 is located above the mud scraper 62, and the length by which the wire brush 61 extends out of the fixing plate 63 is greater than the length by which the mud scraper 62 extends out of the fixing plate 63; the other end of the fixing plate 63 is connected to the telescopic adjusting rod 64; the connecting end plate 65 is provided with a hole for connecting to the other end of the connecting unit 5. Among them, the wire brush 61 is usually a wire brush 61 made of steel wire, and the wall brushing module may include multiple wire brushes 61, and the multiple wire brushes 61 are arranged in parallel up and down on the fixing plate. The telescopic adjusting rod 64 is provided to adjust the lengths by which the wire brush 61 and the mud scraper 62 extend outwards, so as to adjust the lengths by which the wire brush 61 and the mud scraper 62 extend outwards according to the length of the secondary wall.

[0063] Optionally, as Figures 12 - 14 shown, the wall brushing unit 6 includes two symmetrically arranged wall brushing modules, and the sides of the two wall brushing modules close to the telescopic adjusting rod 64 are connected to each other; the two wire brushes 61 extend towards the two ends of the straight line respectively along the straight line direction. The wire brush 61 can be telescopically adjusted back and forth by loosening or tightening the nut of the telescopic adjusting rod 64, and the front and back direction refers to the length direction of the secondary wall. For example, when brushing the joint of the left side wall, the wire brush 61 on the other side can be pushed backwards on the slide plate by loosening the nut. When brushing the wall, usually one side of the wall is brushed separately, because if both sides are brushed simultaneously, it is easy for the wall brushing device to get stuck in the groove due to insufficient perpendicularity of the groove body of the secondary wall, so it is recommended to brush one side at a time. After finishing brushing the left side, use the same adjustment steps to brush the right side wall.

[0064] Existing wall brushing devices usually only have a wire brush on one side. After completing the wall brushing work on one side of the wall surface, it is necessary to disassemble the wall brushing device from the hoisting crawler belt, change the direction and reconnect it, and then carry out the wall brushing work on the other side of the wall surface, which is rather time-consuming. However, in this embodiment, two symmetrically arranged wall brushing modules are adopted. After completing the wall brushing work on one side of the wall surface, there is no need to disassemble the wall brushing module from the grab, thus improving the wall brushing efficiency.

[0065] Based on the same technical concept as the above-mentioned wall brushing device for diaphragm wall, this embodiment also provides a wall brushing method for diaphragm wall, referring to Figures 3 - 6 shown, the wall brushing method includes the following steps:

[0066] S1. Set the grab 41 of the grab trencher 4 to the biting state;

[0067] S2. Connect the connecting unit 5 described in any one of the above to the grab 41 of the grab trencher 4;

[0068] S3. Connect the wall brushing unit 6 described in any one of the above to the connection unit 5;

[0069] S4. Start the grab trench cutter 4, and move the wall brushing unit 6 up and down along the wall to be cleaned to clean the attachments on the wall.

[0070] A wall brushing method for a diaphragm wall provided in this embodiment detachably connects the wall brushing unit 6 to the grab 41 of the grab trench cutter 4, so that the body weight of the grab trench cutter 4 can be fully utilized, effectively controlling the wall brushing unit 6 to closely adhere to the concrete wall surface at the joint position of the diaphragm wall, effectively cleaning attachments such as muck on the concrete wall surface, thereby improving the wall brushing effect of the wall brush.

[0071] A wall brush and a wall brushing method for a diaphragm wall provided by the present invention are not only applicable to foundation pits of conventional depths. When encountering ultra-deep foundation pits, if a crawler crane is used to hoist the wall brush, the hoisting depth is usually insufficient, while the grab trench cutter can avoid such a phenomenon. At the same time, it saves the cost and process of renting a crawler crane to hoist the wall brush alone for wall brushing for one day.

[0072] In summary, a wall brush and a wall brushing method for a diaphragm wall provided by the present invention detachably connect the wall brushing unit 6 to the grab 41 of the grab trench cutter 4, so that the body weight of the grab trench cutter 4 can be fully utilized, effectively controlling the wall brushing unit 6 to closely adhere to the concrete wall surface at the joint position of the diaphragm wall, effectively cleaning attachments such as muck on the concrete wall surface, thereby improving the wall brushing effect of the wall brush.

[0073] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art based on the above disclosure fall within the protection scope of the present invention.

Claims

1. A brushing device for diaphragm wall, characterized in that, The wall brushing device comprises a grab bucket slotting machine, a connecting unit and a wall brushing unit; the grab bucket slotting machine comprises a grab bucket, one end of the connecting unit is detachably connected to the grab bucket, and the other end is connected to the wall brushing unit; The grab bucket comprises two bucket parts for accommodating soil, each of the bucket parts comprises a first side surface, and the first side surface is provided with claws for grabbing soil and a connection hole for connecting the connection unit; The number of the connection units is two. When the grab is in a biting state, the two connection units are detachably connected to one of the first side surfaces respectively. The two connection units are symmetrically arranged on both sides of the grab; The connecting unit includes a first connecting plate, a supporting plate, two or more diagonal supporting plates, and a second connecting plate; The first connecting plate is connected to one end of the supporting plate, the first connecting plate and the supporting plate are perpendicular to each other, and the first connecting plate is provided with a hole for connecting the wall brushing unit; Two or more diagonal bracing plates are spaced apart and arranged in parallel, one end of each diagonal bracing plate is connected to the first connecting plate, and the other end is connected to the supporting plate; The second connecting plate is arranged on the two or more diagonal bracing plates and is perpendicular to the two or more diagonal bracing plates, and the second connecting plate is provided with a waist-shaped hole for connecting the grab bucket; The support plate is provided with a hand-through hole.

2. The brushing device for diaphragm wall according to claim 1, wherein, The connecting unit further comprises two positioning plates and two positioning blocks, the two positioning plates are arranged at intervals at the other end of the supporting plate, and each positioning block is detachably connected to one of the positioning plates; The bucket also includes two parallel second side surfaces, the second side surfaces are perpendicular to the first side surfaces, and the area enclosed by the first side surfaces and the second side surfaces is used to accommodate the grabbed soil; the distance between the two positioning plates is equal to the distance between the two second side surfaces, and the positioning plates are used to prevent the connecting unit from moving relative to the grab bucket.

3. The brushing device for diaphragm wall according to claim 2, wherein, Each of the positioning plates is provided with more than two through holes, and each of the positioning blocks is provided with a through hole that matches with the through hole on the positioning plate.

4. The wall cleaning device for diaphragm wall according to claim 1, wherein, The connecting hole on the first side surface is a waist-shaped overflow hole provided by the grab bucket.

5. The brushing device for diaphragm wall according to claim 4, wherein The second connecting plate is parallel to the extension direction of the waist-shaped overflow hole.

6. The brushing device for diaphragm wall according to claim 1, characterized in that, The wall brushing unit comprises a wall brushing module, and the wall brushing module comprises a brush, a scraper blade, a fixing plate, a telescopic adjustment rod and a connecting end plate; The brush and the scraper are respectively fixed to one end of the fixed plate, the brush is located above the scraper, and the length of the brush extending from the fixed plate is greater than the length of the scraper extending from the fixed plate; The other end of the fixing plate is connected to the telescopic adjustment rod; The connecting end plate is provided with a hole for connecting with the other end of the connecting unit.

7. The wall cleaning device for diaphragm wall according to claim 6, characterized in that, The wall brushing unit comprises two symmetrically arranged wall brushing modules, and the two wall brushing modules are connected to each other at one side close to the telescopic adjustment rod; the two brushes extend to two ends of the straight line respectively along the straight line direction.

8. A method for brushing the wall of a diaphragm wall, characterized in that, The wall brushing method comprises the following steps: S1, setting the grab bucket of the grab bucket slotting machine to a bite state; S2. Connecting the connection unit according to any one of claims 1 to 7 to the grab bucket of the grab bucket slotting machine; S3. Connect the wall brushing unit according to any one of claims 1-7 to the connection unit; S4. Start the grab trench cutter, and move the wall brushing unit up and down along the wall to be cleaned to clean the attachments on the wall.

Images