Groove brushing device for underground diaphragm wall construction

Abstract

The invention discloses a groove brushing device for underground diaphragm wall construction, and relates to the technical field of underground diaphragm wall construction, the groove brushing device comprises at least one brushing roller and an external driving mechanism, the brushing roller comprises an outer roller, an inner roller which can slide relative to the outer roller and cannot rotate is arranged in the outer roller, and a lead screw pair is arranged at the axis position in the inner roller. According to the groove brushing device for underground diaphragm wall construction, through the brushing roller composed of the outer roller and the inner roller, on the premise that a lead screw on a lead screw pair is kept static, in the rotating process of the outer roller and the inner roller, the inner roller can slide in a reciprocating mode relative to the outer roller, and therefore in the groove brushing process of an underground diaphragm wall, the inner roller can slide in a reciprocating mode; the space between the roller teeth on the outer roller and the roller teeth on the inner roller is changed, so that the fine degree of cleaning of the brush roller is enhanced, the fine groove brushing effect can be achieved without excessively adjusting the groove brushing machine left and right under the state of the same groove brushing efficiency, the missing area is effectively reduced, and the overall cleaning quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of diaphragm wall construction, and specifically to a grooving device for diaphragm wall construction. Background Art

[0002] Grooving (i.e., wall brushing) during the construction of diaphragm walls is a crucial step, which is directly related to the quality, durability, and safety of the wall.

[0003] Most grooving devices adopt the brush roll type, which is different from the scraper type that directly acts on the wall surface. Since the brush roll type continuously rotates and acts on the wall surface, the brushing intensity is relatively high and the fineness is better. However, the grooving fineness of the brush roll type grooving device is restricted by the spacing between the roller teeth. Among them, because the spacing between the roller teeth is fixed, if a finer brushing effect is required, the number of adjustments needs to be increased, and correspondingly, the number of brushings is also required to be more. For this reason, we propose a grooving device for diaphragm wall construction. Summary of the Invention

[0004]

Technical Problem to be Solved

[0005]

Technical Solution

[0006] Preferably, when there is only one brush roll in the grooving device, it is suitable for the implementation scenario of being installed on a trench cutter. One grooving device can be installed on each grab on both sides of the trench cutter. When there are two brush rolls in the grooving device, it is suitable for the application scenario of using the grooving device alone.

[0007] Preferably, the driving mechanism includes a motor, or a mechanism composed of a motor + a reducer. A shaft fixedly connected to the brush roll is arranged on the housing of the driving mechanism corresponding to the axial center of the brush roll.

[0008] Preferably, the two groups of roller teeth are fixedly connected to the outer wall of the outer roller and the inner roller in a path array respectively.

[0009] Preferably, a key shaft one is fixedly connected to the axial center part of the inner sides of both ends of the outer roller, and the two ends of the inner roller are spline-connected to the outer roller through the two key shafts one.

[0010] Preferably, a key shaft three is fixedly connected to one end of the lead screw outside the outer roller and the inner roller, and a key shaft two is fixedly connected to one end of the outer roller adjacent to the key shaft three. When the key shaft three and the key shaft two are relatively fixed, the outer roller and the inner roller will not slide relative to each other during the rotation of the outer roller and the inner roller.

[0011] Preferably, the brush groove device further includes a connection component, and the connection component is in line with the structures of the key shaft two and the key shaft three. The connection component is used to form the relative fixation between the key shaft two and the key shaft three, or to form the relative fixation between the key shaft three and the outside.

[0012] Preferably, the connection component includes a connecting piece that is in line with the structures of the key shaft two and the key shaft three, and the connecting piece is externally connected to a telescopic member.

[0013] Preferably, the telescopic member adopts a telescopic driving member such as a cylinder, an oil cylinder or an electric push rod, and the connecting piece is a telescopic section fixedly connected to the telescopic member.

[0014] Preferably, the connecting piece includes a key sleeve that can be key-connected to the key shaft two and the key shaft three. The key sleeve is provided with an internal spline and an external spline, and the key sleeve is fixedly connected to one end of the corresponding lead screw. The internal spline can be key-connected to the key shaft two and the key shaft three, and the external spline can be key-connected to the outside.

[0015] Preferably, the connection component is attached with a casing, and the key sleeve can be key-connected to the casing based on the external spline thereon.

[0016] Preferably, a guide rod is rotatably connected to the key sleeve, and a guide rail that is in line with the structure of the guide rod is provided. The guide rail is fixedly connected to the telescopic section of the telescopic member. The transmission connection between the telescopic member and the connecting piece is realized through the guide rail, so as to change the force application direction of the connecting piece and increase the installation freedom degree of the telescopic member, so as to prevent the overall size of the brush groove device from becoming larger due to the installation of the telescopic member in the axial direction of the key sleeve.

[0017] Preferably, the brush groove device further includes a cleaning component. The cleaning component includes two groups of scraping plates. One group of scraping plates is erected corresponding to the roller teeth on the outer roller, and the other group of scraping plates is erected corresponding to the roller teeth on the inner roller. The two groups of scraping plates can slide relative to each other. One group of scraping plates corresponding to the roller teeth on the outer roller is fixed to the outside, and the other group of scraping plates is attached with a lead screw pair for driving this group of scraping plates to slide reciprocally relative to the other group of scraping plates.

[0018] Preferably, a set of scraping plates corresponding to the roller teeth on the outer roller can be fixedly connected to the casing attached to the connecting component or the driving mechanism, and a set of scraping plates corresponding to the roller teeth on the inner roller are fixedly connected to the nut of the lead screw pair, and the two sets of scraping plates are slidably connected.

[0019] Preferably, the lead screw of the lead screw pair attached to the cleaning component is connected to one output end of the driving mechanism, and the structural parameters of the lead screw pair attached to the cleaning component are the same as those of the lead screw pair attached to the brush roller.

[0020] Preferably, the lead screw in the lead screw pair attached to the cleaning component is also connected with a connecting piece, and this connecting piece is also equipped with a guide rail. The guide rail is fixedly connected to the telescopic section of the telescopic member. This lead screw is provided with a key groove, and one output shaft corresponding to the key groove on the driving mechanism is set as key shaft four. The connecting piece can be engaged with an external key. The lead screw has two key engagement states. It disengages from the external key engagement during the engagement with key shaft four, and disengages from the key engagement with key shaft four during the engagement with the external key.

[0021] Preferably, the lead screw on the cleaning component can be spline-connected with key shaft four through the key groove.

[0022] Preferably, the erection method of the lead screw attached to the cleaning component and the corresponding connecting piece thereof refers to the erection method of the lead screw attached to the brush roller and the corresponding connecting piece thereof.

[0023] Preferably, the scraping plate includes a receiving section and a straightening section. The distance between the receiving sections is greater than the diameter of the roller teeth, and the distance between the straightening sections fits the diameter of the roller teeth. Thus, the receiving section on the scraping plate allows the roller teeth after being bent to a certain degree to enter the scraping plate, and during the process of entering the scraping plate, the straightening of the roller teeth is realized.

[0024] Preferably, a through hole is provided on one side of the scraping plate corresponding to the roller teeth. Based on this through hole, the scraping plate is communicated with an external liquid supply device.

[0025] Preferably, the liquid supply device is mainly composed of a pump component such as a water pump and a water tank, and is used to pump the water in the water tank to the through hole under high pressure for spraying to realize the cleaning of the roller teeth.

[0026]

Beneficial effects

[0027] Figure 1 FIG. is a schematic diagram of the overall structure of the grooving device for diaphragm wall construction of the present invention.

[0028] Figure 2 FIG. is a top view of the grooving device for diaphragm wall construction of the present invention.

[0029] Figure 3 FIG. is an anatomical diagram of the structure of the brush roller in the grooving device for diaphragm wall construction of the present invention.

[0030] Figure 4 FIG. is a disassembled schematic diagram of the structure of the brush roller in the grooving device for diaphragm wall construction of the present invention.

[0031] Figure 5 FIG. is a schematic diagram of the structure of the connection component in the grooving device for diaphragm wall construction of the present invention.

[0032] Figure 6 FIG. is a schematic diagram of the structure of the key sleeve for the connection component in the grooving device for diaphragm wall construction of the present invention.

[0033] Figure 7 FIG. is a schematic diagram of the structure of the cleaning component in the grooving device for diaphragm wall construction of the present invention.

[0034] Figure 8 FIG. is a schematic diagram of the structure of the cleaning component as a preferred embodiment in the grooving device for diaphragm wall construction of the present invention.

[0035] In the figure: 1. Brush roller; 2. Driving mechanism; 3. Connection component; 4. Cleaning component; 11. Outer roller; 12. Inner roller; 13. Roller teeth; 111. Through groove; 112. Key shaft one; 113. Key shaft two; 121. Nut; 122. Screw rod; 1221. Thread; 1222. Key shaft three; 1223. Key groove; 21. Key shaft four; 31. Connecting piece; 32. Telescopic piece; 33. Guide rail; 311, key cover; 312, guide rod; 41. Scraper; 411, through hole; 412, connecting section; 413, straightening section. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and functional effects of the present invention easy to understand, the present invention will be further described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] [Example 1] In order to address the shortcomings of the existing technology, such as Figure 1 , 2 As shown, the present invention provides a brush groove device for underground continuous wall construction, including at least one brush roller 1, and at least one brush roller 1 is externally connected to a driving mechanism 2 for driving the brush roller 1 to rotate.

[0038] It should be noted that the trough brushing device as a whole can be installed on the grab bucket of the troughing machine, or can be suspended by an external hanging device. When in use, the brush roller 1 is driven to rotate by the driving mechanism 2, and when the brush roller 1 rotates, it acts on the underground continuous wall to scrape the soil on the underground continuous wall; During the brushing process, the roller teeth on the brush roller 1 are transformed to change the spacing between the roller teeth. When the spacing between the roller teeth becomes smaller and acts on the underground continuous wall, the soil with smaller particles on the underground continuous wall that may have been missed can be scraped off.

[0039] Specifically, Figure 3 As shown, a brush roller 1 for a brush groove device for underground continuous wall construction, the brush roller 1 comprises an outer roller 11, an inner roller 12 which can slide relatively to the outer roller 11 but cannot rotate is arranged inside the outer roller 11, a screw pair is arranged at the axial position inside the inner roller 12, a screw 122 on the screw pair penetrates the inner roller 12 and the outer roller 11 and extends to the outside, a nut 121 on the screw pair is fixedly connected to the inner roller 12, when the screw 122 is stationary relative to the outside, the outer roller 11 and the inner roller 12 slide back and forth relative to each other during the rotation process; A plurality of roller teeth 13 are provided on the outer walls of the outer roller 11 and the inner roller 12, and the two sets of roller teeth 13 are staggered. A through groove 111 allowing the roller teeth 13 on the inner roller 12 to penetrate is formed at a position between two adjacent roller teeth 13 on the outer roller 11; At the axial center positions on the inner sides of both ends of the outer roller 11, a key shaft one 112 is fixedly connected, and both ends of the inner roller 12 are spline-connected to the outer roller 11 through these two key shafts one 112; The two sets of roller teeth 13 are respectively fixedly connected to the outer walls of the outer roller 11 and the inner roller 12 in a path array. The roller teeth on the outer roller 11 and the inner roller 12 and the space between them can adopt a modular design for easy replacement. In this embodiment, one end of the lead screw 122 extending out of the outer roller 11 is fixed to the external machine housing.

[0040] Among them, when there is only one brush roller 1 in the brush groove device, it is suitable for the implementation scenario of being installed on a grooving machine. One brush groove device can be installed on each grab on both sides of the grooving machine. When there are two brush rollers 1 in the brush groove device, it is suitable for the application scenario where the brush groove device is used alone. The driving mechanism 2 includes a motor, or a mechanism composed of a motor + a reducer. At a position on the housing of the driving mechanism 2 corresponding to the axis of the brush roller 1, a shaft fixedly connected to the brush roller 1 is provided.

[0041] It should be noted that the present invention is a brush groove device for underground diaphragm wall construction. During the process of brushing the groove through the provided brush roller 1, the whole brush roller 1 rotates based on the driving of the driving mechanism 2 through the outer roller 11. During the rotation of the outer roller 11, the inner roller 12 rotates synchronously relative to the outer roller 11 in a relatively slidable manner based on the key shaft one 112 provided thereon. To make the distance between the roller teeth 13 on the outer roller 11 and the roller teeth 13 on the inner roller 12 variable, in this embodiment, one end of the lead screw 122 extending out of the outer roller 11 is fixed to the outside, making the lead screw 122 stationary. During the process of the driving mechanism 2 driving the outer roller 11 and the inner roller 12 to rotate, the inner roller 12 acts on the outer wall of the lead screw 122 based on the nut 121 fixed thereto. The nut 121 meshes with the thread 1221. Since the lead screw 122 is stationary and the inner roller 12 drives the nut 121 to rotate on the outer wall of the lead screw 122, the inner roller 12 slides relatively on the inner wall of the outer roller 11 during rotation, and so on, making the distance between two adjacent roller teeth 13 variable.

[0042] It is worth mentioning that through the brush roller 1 composed of the outer roller 11 and the inner roller 12, on the premise that the lead screw 122 on the lead screw pair remains stationary, since the inner roller 12 is fixedly connected to the nut 121 on the lead screw pair, during the rotation of the outer roller 11 and the inner roller 12, the inner roller 12 will reciprocally slide relative to the outer roller 11. In this way, during the process of brushing the groove of the diaphragm wall, the distance between the roller teeth 13 on the outer roller 11 and the roller teeth 13 on the inner roller 12 changes, thereby enhancing the fineness of the cleaning of the brush roller 1. In the state of the same brushing groove efficiency, it is possible to achieve a delicate brushing groove effect without excessive left - right adjustment of the brushing machine, effectively reducing the missed areas and improving the overall cleaning quality.

[0043]

Embodiment 2

[0044] And as Figure 2 shown, the present invention provides a brushing groove device for diaphragm wall construction. The brushing groove device further includes a connection component 3. The connection component 3 is in line with the structures of the key shaft two 113 and the key shaft three 1222. The connection component 3 is used to form the relative fixation of the key shaft two 113 and the key shaft three 1222, or to form the relative fixation of the key shaft three 1222 and the outside.

[0045] Specifically, as Figure 5 、 6 shown, a connection component 3 for a brushing groove device for diaphragm wall construction. The connection component 3 includes a connecting piece 31 that is in line with the structures of the key shaft two 113 and the key shaft three 1222, and the connecting piece 31 is externally connected to a telescopic member 32; the telescopic member 32 adopts a telescopic driving member such as a cylinder, an oil cylinder or an electric push rod, and the connecting piece 31 is a telescopic section fixedly connected to the telescopic member 32.

[0046] It should be noted that the present invention is a grooving device for diaphragm wall construction. By means of the provided connecting assembly 3, in order to ensure that the distance between the roller teeth 13 on the outer roller 11 and the roller teeth 13 on the inner roller 12 does not change during the rotation of the brush roller 1, it is necessary to drive the guide rail 33 to move through the telescopic member 32. During the process of the telescopic member 32 driving the guide rail 33 to move, the guide rail 33 acts on the connecting member 31, so that the connecting member 31 is simultaneously key-engaged to the second key shaft 113 and the third key shaft 1222; In this state, the lead screw 122 rotates synchronously with the outer roller 11 and the inner roller 12 based on the connecting member 31. Therefore, the nut 121 located inside the inner roller 12 and the lead screw 122 are in a relatively stationary state, and the inner roller 12 will not slide relative to the outer roller 11.

[0047] Or in the operating mode where a certain distance between the roller teeth 13 is required. Previously, by rotating the lead screw 122 to keep the outer roller 11 and the inner roller 12 stationary, or by rotating the outer roller 11 and the inner roller 12 to keep the lead screw 122 stationary, so that the inner roller 12 slides relative to the roller teeth 13. When the distance between the roller teeth 13 on the outer roller 11 and the roller teeth 13 on the inner roller 12 is appropriate, similarly to the above, by driving the guide rail 33 to move through the telescopic member 32, the connecting member 31 can be simultaneously engaged to the second key shaft 113 and the third key shaft 1222.

[0048] In the first embodiment above, in order to enable the distance between the roller teeth 13 on the outer roller 11 and the roller teeth 13 on the inner roller 12 to change during the rotation of the brush roller 1, since the lead screw 122 needs to be kept stationary, in this embodiment, when the lead screw 122 is kept stationary, at this time the connecting member 31 should be disengaged from the simultaneous engagement with the second key shaft 113 and the third key shaft 1222. And to prevent the lead screw 122 from rotating by itself during the rotation of the outer roller 11 and the inner roller 12 of the brush roller 1, when the telescopic member 32 drives the connecting member 31 to disengage from the second key shaft 113 through the guide rail 33, at this time the connecting member 31 should be key-engaged with a fixed member or a fixed part such as a protective cover outside; In this state, because the lead screw 122 is engaged with the outside through the connecting member 31 based on the third key shaft 1222, therefore, the lead screw 122 cannot rotate by itself.

[0049] It is worth mentioning that by driving the connecting member 31 through the telescopic member 32, the lead screw 122 is key-connected to the outside or key-connected to the outer roller 11 to change the connection state of the lead screw 122. When the lead screw 122 is key-connected to the outside, the lead screw 122 remains stationary, so that the outer roller 11 and the inner roller 12 can slide relative to each other during rotation. When the lead screw 122 is key-connected to the key shaft two 113 on the outer roller 11, the lead screw 122 rotates synchronously with the outer roller 11 and the inner roller 12 and is in a stationary state relative to the outer roller 11 and the inner roller 12. In this state, the outer roller 11 and the inner roller 12 do not slide relative to each other, thereby allowing the brush roller 1 to flexibly switch between two working modes and enhancing adaptability.

[0050] As a preferred embodiment, and as Figure 5 、 6 shown, the connecting member 31 includes a key sleeve 311 that can be key-connected to the key shaft two 113 and the key shaft three 1222. The key sleeve 311 is provided with internal and external splines, and the key sleeve 311 is fixedly connected to one end of the corresponding lead screw 122. The internal spline can be key-connected to the key shaft two 113 and the key shaft three 1222, and the external spline can be key-connected to the outside; the connecting assembly 3 is attached with a housing, and the key sleeve 311 can be key-connected to the housing based on the external splines thereon; A guide rod 312 is rotatably connected to the key sleeve 311, and a guide rail 33 that is structurally compatible with the guide rod 312 is provided. The guide rail 33 is fixedly connected to the telescopic section of the telescopic member 32.

[0051] Among them, the transmission connection between the telescopic member 32 and the connecting member 31 is realized through the guide rail 33, thereby changing the force direction of the connecting member 31 and increasing the installation freedom of the telescopic member 32, so as to prevent the overall size of the brush groove device from becoming larger due to the installation of the telescopic member 32 in the axial direction of the key sleeve 311.

[0052]

Embodiment III

[0053] As Figure 7 、 8As shown, a cleaning component 4 for a grooving device in diaphragm wall construction. The grooving device further includes the cleaning component 4. The cleaning component 4 includes two sets of scraping plates 41. One set of scraping plates 41 is erected corresponding to the roller teeth 13 on the outer roller 11, and the other set of scraping plates 41 is erected corresponding to the roller teeth 13 on the inner roller 12. And the two sets of scraping plates 41 can slide relatively. One set of scraping plates 41 corresponding to the roller teeth 13 on the outer roller 11 is fixed to the outside, and the other set of scraping plates 41 is attached with a screw pair for driving this set of scraping plates 41 to slide reciprocally relative to the other set of scraping plates 41. One set of scraping plates 41 corresponding to the roller teeth 13 on the outer roller 11 can be fixedly connected to the housing attached to the connecting component 3 or the driving mechanism 2, and one set of scraping plates 41 corresponding to the roller teeth 13 on the inner roller 12 is fixedly connected to the nut 121 of the screw pair. The two sets of scraping plates 41 are slidably connected. The screw rod 122 of the screw pair attached to the cleaning component 4 is connected to one output end of the driving mechanism 2. The structural parameters of the screw pair attached to the cleaning component 4 are the same as those of the screw pair attached to the brush roller 1.

[0054] It should be noted that the present invention is a grooving device for diaphragm wall construction. By providing the cleaning component 4, during the rotation of the brush roller 1, the roller teeth 13 on the outer roller 11 and the inner roller 12 continuously pass through the scraping plates 41, and the scraping plates 41 scrape the soil adhered to the roller teeth 13 to achieve cleaning.

[0055] During the rotation of the brush roller 1, in order to enable the two sets of scraping plates 41 to move synchronously with the relative movement of the inner roller 12 and the roller teeth 13, previously it was also driven by the telescopic member 32 to drive the guide rail 33 to move. During the movement of the guide rail 33, the guide rod 312 in the cleaning component 4 is acted on to make the screw rod 122 corresponding to this guide rod 312 move until this screw rod 122 is butted against and engaged with the key shaft four 21 on the driving mechanism 2. In this state, the driving mechanism 2 drives the screw rod 122 in the cleaning component 4 and the screw rod 122 in the brush roller 1 to rotate at the same speed. Thus, during the movement of the two sets of roller teeth 13, the two sets of scraping plates 41 also move synchronously, and the roller teeth 13 and the corresponding scraping plates 41 are relatively stationary, so that the roller teeth 13 can still be cleaned during the axial movement based on the brush roller 1.

[0056] As a preferred embodiment, the lead screw 122 in the lead screw pair attached to the cleaning assembly 4 is also connected with a connecting piece 31, and this connecting piece 31 is also equipped with a guide rail 33. The guide rail 33 is fixedly connected to the telescopic section of the telescopic member 32. The lead screw 122 is provided with a keyway 1223, and one output shaft corresponding to the keyway 1223 on the driving mechanism 2 is set as the key shaft four 21. The connecting piece 31 can be keyed to the external key. The lead screw 122 has two key engagement states, disengaging from the external key engagement during the key engagement with the key shaft four 21, and disengaging from the key engagement with the key shaft four 21 during the key engagement with the external key; The lead screw 122 on the cleaning assembly 4 can be splined to the key shaft four 21 through the keyway 1223; The erection method of the lead screw 122 attached to the cleaning assembly 4 and the corresponding connecting piece 31 refers to the erection method of the lead screw 122 attached to the brush roller 1 and the corresponding connecting piece 31.

[0057] In the second embodiment above, because there is an embodiment where the distance between the roller teeth 13 remains unchanged, correspondingly, the distance between the two sets of scraping plates 41 should also remain unchanged. Therefore, if the distance between the two sets of scraping plates 41 needs to be kept constant, after the connecting piece 31 on the brush roller 1 is keyed to the external fixed part such as a protective cover and the key shaft three 1222 on the lead screw 122 through the control of the telescopic member 32, the connecting piece 31 on the cleaning assembly 4 is keyed to the external fixed part such as a protective cover with the same operating principle, and at this time, the keyway 1223 provided on the lead screw 122 attached to the cleaning assembly 4 should disengage from the key engagement with the key shaft four 21, so as to keep the lead screw 122 attached to the cleaning assembly 4 stationary.

[0058]

Embodiment Four

[0059] As a preferred embodiment, through holes 411 are provided on one side of the scraping plate 41 corresponding to the roller teeth 13. Based on these through holes, the scraping plate 41 is connected to an external liquid supply device; the liquid supply device is mainly composed of pump components such as water pumps and water tanks, and is used to pump the water in the water tank to the through holes 411 under high pressure for spraying to clean the roller teeth 13.

[0060] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A grooving device for diaphragm wall construction, comprising at least one brush roll (1), and at least one of the brush rolls (1) is externally connected to a driving mechanism (2) for driving its rotation, characterized in that: The brush roll (1) includes an outer roll (11). An inner roll (12) that can slide relative to and is non-rotatable with respect to the outer roll (11) is provided inside the outer roll (11). A lead screw pair is provided at the axial center position inside the inner roll (12). The lead screw (122) on the lead screw pair penetrates through the inner roll (12) and the outer roll (11) and extends to the outside. The nut (121) on the lead screw pair is fixedly connected to the inner roll (12). When the lead screw (122) is stationary relative to the outside, the outer roll (11) and the inner roll (12) slide relative to each other reciprocally during rotation. A plurality of roll teeth (13) are provided on the outer walls of both the outer roll (11) and the inner roll (12), and the two sets of roll teeth (13) are staggered. A through groove (111) allowing the roll teeth (13) on the inner roll (12) to penetrate is formed at a position between two adjacent roll teeth (13) on the outer roll (11).

2. The grooving device for diaphragm wall construction according to claim 1, characterized in that: A key shaft three (1222) is fixedly connected to one end of the lead screw (122) outside the outer roll (11) and the inner roll (12), and a key shaft two (113) is fixedly connected to one end of the outer roll (11) adjacent to the key shaft three (1222). When the key shaft three (1222) and the key shaft two (113) are relatively fixed, the outer roll (11) and the inner roll (12) do not slide relative to each other during the rotation of the outer roll (11) and the inner roll (12).

3. The grooving device for diaphragm wall construction according to claim 2, characterized in that: The brush groove device further includes a connection assembly (3). The connection assembly (3) fits the structures of the key shaft two (113) and the key shaft three (1222). The connection assembly (3) is used to form the relative fixation between the key shaft two (113) and the key shaft three (1222), or to form the relative fixation between the key shaft three (1222) and the outside.

4. A grooving device for diaphragm wall construction according to claim 3, characterized in that: The connection assembly (3) includes a connecting member (31) that fits the structures of the key shaft two (113) and the key shaft three (1222), and the connecting member (31) is externally connected to a telescopic member (32).

5. The grooving device for diaphragm wall construction according to claim 4, wherein: The connecting member (31) includes a key sleeve (311) that can be key-engaged with the key shaft two (113) and the key shaft three (1222). The key sleeve (311) is provided with internal and external splines, and the key sleeve (311) is fixedly connected to one end of the corresponding lead screw (122). The internal spline can be key-engaged with the key shaft two (113) and the key shaft three (1222), and the external spline can be key-engaged with the outside.

6. The grooving device for diaphragm wall construction according to claim 5, characterized in that: A guide rod (312) is rotatably connected to the key sleeve (311), and a guide rail (33) that fits the structure of the guide rod (312) is provided. The guide rail (33) is fixedly connected to the telescopic section of the telescopic member (32).

7. A grooving device for diaphragm wall construction according to claim 6, characterized in that: The brush groove device further includes a cleaning assembly (4). The cleaning assembly (4) includes two sets of scraping plates (41). One set of scraping plates (41) is arranged corresponding to the roll teeth (13) on the outer roll (11), and the other set of scraping plates (41) is arranged corresponding to the roll teeth (13) on the inner roll (12). The two sets of scraping plates (41) can slide relative to each other. One set of scraping plates (41) corresponding to the roll teeth (13) on the outer roll (11) is fixed to the outside, and the other set of scraping plates (41) is attached with a lead screw pair for driving this set of scraping plates (41) to slide reciprocally relative to the other set of scraping plates (41).

8. A grooving device for diaphragm wall construction according to claim 7, characterized in that: The lead screw (122) in the lead screw pair attached to the cleaning component (4) is also connected to a connecting piece (31), and this connecting piece (31) is also equipped with a guide rail (33). The guide rail (33) is fixedly connected to the telescopic section of the telescopic member (32). The lead screw (122) is provided with a keyway (1223), and one output shaft corresponding to the keyway (1223) on the driving mechanism (2) is set as the key shaft four (21). The connecting piece (31) can be keyed to the outside. The lead screw (122) has two keyed states, disengaging from the external key during the key engagement with the key shaft four (21), and disengaging from the key engagement with the key shaft four (21) during the key engagement with the external key.

9. A grooving device for diaphragm wall construction according to claim 7, characterized in that: The scraper (41) includes a receiving section (412) and a straightening section (413). The spacing of the receiving section (412) is greater than the diameter of the roller teeth (13), and the spacing of the straightening section (413) fits the diameter of the roller teeth (13).

10. A grooving device for diaphragm wall construction according to claim 7, characterized in that: A through hole (411) is provided on one side of the scraper (41) corresponding to the roller teeth (13). Based on this through hole, the scraper (41) is connected to an external liquid supply device.

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