Wall brush based on symmetrically arranged multiple steel brushes

Abstract

The application discloses a multi-steel-brush wall brushing device based on symmetric arrangement and belongs to the technical field of water conservancy and hydropower foundation construction, and aims to solve the problems of torque imbalance and poor operation stability of the existing wall brushing device. The core structure comprises a frame body, a second brush head located in the middle is arranged on one side of the frame body, and first brush heads are symmetrically arranged on both sides of the second brush head. The rotating directions of the first brush heads and the second brush head are opposite. The total number of steel brushes of the two first brush heads is equal to the number of steel brushes of the second brush head. The number of steel brushes in contact with the impervious wall of the two first brush heads and the second brush head is consistent at any time. The application can realize complete cancellation of positive and negative torques, solve the problems of average torque imbalance and instantaneous torque pulsation, avoid the deflection and shaking of the wall brushing device, ensure the effective adhesion of the brush head to the wall surface, greatly improve the cleaning effect and operation efficiency of the joint surface of the impervious wall, and guarantee the construction quality of the impervious wall.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and hydropower foundation construction technology, and more particularly to the construction of anti-seepage walls, and especially to the field of cleaning devices before splicing adjacent trench sections of anti-seepage walls, specifically to a multi-steel brush wall brusher based on symmetrical arrangement. Background Technology

[0002] In the construction of hydraulic and hydropower foundation projects, cutoff walls are the core structure of the seepage prevention system for hydraulic structures such as dams and cofferdams. They are often constructed using a segmented, sequential construction method, and the joint surfaces between adjacent segments are the weakest points in the seepage prevention system. Mud, sediment, soil protrusions, and other debris adhering to the joint surfaces can directly lead to seepage channels at the joints, severely reducing the overall seepage prevention performance of the cutoff wall and even causing safety accidents such as leakage and piping. Therefore, before pouring concrete for adjacent segments, a thorough cleaning of the joint surfaces is essential, and a wall-cleaning device is currently the core equipment for joint surface cleaning.

[0003] Existing conventional wall brushes mostly use a single set of roller brush heads or multiple sets of brush heads rotating in the same direction. In practical engineering applications, this has several insurmountable technical defects: First, the current brush heads mostly use a unidirectional rotation design, meaning the torque generated by the friction between the brush head and the wall surface during operation cannot cancel each other out. This results in an imbalance in the overall average torque of the wall brush, making it prone to swaying, shaking, or even axial jumping within the groove section. This prevents the brush head from maintaining a stable and effective fit with the joint wall surface, leading to problems such as blind spots and missed areas, and failing to guarantee the cleaning quality of the joint surface. Second, the steel brushes in existing brush heads mostly use a discrete fixing method. During installation and operation, the number of steel brushes in contact with the wall fluctuates continuously with rotation. Especially when using a brush head structure with forward and reverse rotation, the inconsistent number of steel brushes in contact in the forward and reverse directions can easily cause instantaneous torque pulsation, further aggravating the high-frequency vibration of the equipment. This not only significantly reduces cleaning efficiency but also accelerates the wear of equipment components and shortens the equipment's service life. Thirdly, most existing steel brushes are fixed integral structures. After the steel wire bristles wear down, the effective length cannot be adjusted, and the entire steel brush must be replaced. This results in low consumable utilization, high engineering application costs, and frequent replacement of consumables increases on-site downtime, affecting the construction progress.

[0004] Based on the aforementioned technical problems of existing wall brushers, there is an urgent need to develop a wall brushing device for seepage prevention that can achieve torque self-balancing, strong operational stability, good cleaning effect, and high material utilization rate, so as to meet the needs of high-quality construction of water conservancy and hydropower seepage prevention wall projects. Summary of the Invention

[0005] To address the issues of average torque imbalance and instantaneous torque pulsation in existing wall-cleaning devices, this application provides a multi-steel-brush wall-cleaning device based on symmetrical arrangement. By symmetrically arranging the brush heads, the arrangement and rotation speed among the multiple brush heads are reconstructed, thereby achieving average torque balance. This avoids the swaying, shaking, and jumping caused by torque imbalance, which prevents the brush heads from making good contact with the waterproof wall and results in poor cleaning performance. Furthermore, this invention avoids the problem of inconsistent forward and reverse torque caused by the contact between the steel wire bristles and the waterproof wall, which leads to instantaneous torque pulsation and intermittent contact jumping between the steel wire bristles and the waterproof wall, significantly reducing cleaning efficiency, by using a sine curve, axial reciprocating curve, or parallel spiral pattern to discretely install the brush heads or continuously install the bristles.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] To address the issues of average torque imbalance and instantaneous torque pulsation during the cleaning of joint surfaces in seepage-proof walls, this invention provides a symmetrically arranged multi-brush wall brusher. The brusher includes a frame, with a first brush head and a second brush head mounted on one side of the frame. The second brush head is located in the middle, and the first brush heads are symmetrically mounted on either side of the second brush head. The rotation direction of the first brush heads is opposite to that of the second brush heads, and the total number of brushes on the two first brush heads is equal to the number of brushes on the second brush head. Furthermore, during any complete rotation cycle T, the number of brushes on the second brush head that come into contact with the seepage-proof wall is equal to the number of brushes on both first brush heads that come into contact with the seepage-proof wall. It should be noted that any time period T is in seconds and T≥1s. The actual operating speed of the wall brusher is not high, typically controlled between 60-300 r / min. However, depending on different working conditions and the thickness of the mud deposit, the speed can be further reduced or increased to achieve a balance between cleaning effectiveness and efficiency. It is important to emphasize that the key limitation of this invention is not the length of the time period T, but rather ensuring that the phases of the steel brushes installed on the first and second brush heads, which are rotating in opposite directions, are synchronized. In other words, the number of steel brushes in contact with the cutoff wall must remain consistent regardless of whether the time period T is long or short. If the time period T is long, it reflects average torque balance, addressing the uncontrollable state of unstable contact or even separation between the steel brushes and the cutoff wall sidewall caused by the deflection, shaking, and jumping of the entire brush unit. If the time period T is short, it reflects small-amplitude oscillations occurring in a short or very short period, directly manifested as instantaneous torque pulsation of the entire brush unit, which also significantly reduces brushing efficiency and cleaning quality. Of course, the problem of instantaneous torque pulsation can also be addressed by setting up a shock-absorbing structure to absorb vibration, thereby improving or even essentially eliminating this problem. Several preferred solutions exist, which will be described in detail later.

[0008] To better address the issues of uneven average torque distribution causing vibration and missed areas, preferably, both the first and second brush heads include a brush head frame for mounting on the frame. A hydraulic motor for driving the rotating drum is mounted on the brush head frame. Multiple steel brushes are mounted on the circumferential sidewall of the rotating drum, and the projection of the steel brushes along the axial direction of the rotating drum is evenly distributed along the circumference. This even distribution along the axial projection direction helps to balance average or cumulative torque and address instantaneous pulsations, making precise control easier while maintaining the same rotational speed. However, the steel brushes are not completely confined to a single axial position on the circumference; they can be arranged at different positions along the axial direction. This allows for a wider effective cleaning of the seepage-proof wall width when the drum rotates once. If all the steel brushes were arranged on the same circumference, they would only be able to clean the seepage-proof wall corresponding to that circumference, significantly reducing cleaning efficiency and increasing unnecessary wear on the brushes.

[0009] To further improve brushing efficiency, preferably, the effective brushing range of any of the steel brushes located at different axial positions on the rotating drum of the first or second brush head is continuously and uninterruptedly connected along the axial direction of the drum, completely covering the preset axial brushing working surface of the drum without any blind spots. As described above, arranging the steel brushes at different positions along the axial direction can effectively widen the unit brushing width of the first or second brush head, but it is required that there are no blind spots or interruptions in the entire brushing width; otherwise, brushing omissions are likely to occur. For example, if the effective brushing width of a single steel brush is n (cm), then the number of brushes installed at different axial positions on the same rotating drum is k, and the effective brushing width should be less than n*k (cm). In this way, compared with the arrangement of a single row of steel brushes, the brushing efficiency can be significantly increased in one revolution of the drum, and it can also avoid repeated and excessive brushing of the same position by all steel brushes in the same position, which would lead to unnecessary wear of the steel brushes.

[0010] To increase the service life of a single steel brush and achieve adjustable effective brush length, preferably, the steel brush includes a second sleeve fixedly installed on the circumferential sidewall of the rotating drum, a third sleeve axially lockable and slidingly nested with the second sleeve, and steel wire bristles fixed at one end inside the third sleeve and radially spread out at the other end. When the steel brush is brand new, the second and third sleeves are in their maximum nesting state, at which point the entire steel brush is at its shortest length. As the steel wire bristles wear down and shorten, to ensure the effective brushing radius of the brush head remains within a preset range, the nesting state of the second and third sleeves can be changed. By altering the relative position between the second and third sleeves, the length of the worn steel wire bristles is compensated, allowing the steel brush to continue effectively brushing until the relative position between the second and third sleeves reaches the designed maximum length. At this point, the remaining length of the steel wire bristles and the radial spread have reached their minimum usability limit. Replacing the steel brush at this point significantly saves on consumable costs without affecting the cleaning operation.

[0011] For ease of adjustment, preferably, multiple positioning holes for installing locking components are provided axially spaced between the second and third sleeves to fix their relative axial positions. For example, one or both sides of the positioning holes can be made into threaded holes, and the locking component can be a screw that matches the threaded hole. Of course, to prevent the screw from falling off, a cotter pin or other anti-loosening safety structure can be provided.

[0012] To further address the issue of instantaneous torque pulsation, this invention also provides another method for installing steel wire bristles. Unlike the discretely installed steel brushes described above, continuous steel brush bristles are used, thus avoiding the problem of phase asynchrony. Specifically, both the first and second brush heads include a brush head frame for mounting on the frame. A hydraulic motor for driving the rotating drum is mounted on the brush head frame. Brush grooves for installing steel wire bristles are fixedly provided on the circumferential sidewall of the rotating drum. The brush grooves are arranged in a sinusoidal, axial reciprocating, or parallel spiral pattern, and the axial projection of the brush grooves is continuous and uninterrupted. Due to the use of non-discrete brush grooves, continuous installation of steel wire bristles is possible, ensuring that the bristles are in contact with the impermeable wall at any given time. Consequently, the forward and reverse rotation of the brush heads can completely cancel out the resulting torsion. It is worth noting that since the sidewall of the seepage barrier between adjacent sections is an arc-shaped sidewall formed after the cylindrical joint pipe is pulled out, the radius of rotation of the steel wire brushes installed on the rotating drum is consistent with the arc-shaped sidewall. Therefore, whether discrete steel brushes or continuously installed steel wire brushes are used, there will always be steel wire brushes in direct contact with the arc-shaped sidewall at any given moment. The only difference is that the number of steel brushes installed discretely cannot be precisely guaranteed to be exactly the same at any given moment, i.e., in a static state, the number of steel brushes in forward and reverse rotation is absolutely the same. However, in a dynamic state, the same number can be ensured within a time period by controlling the rotation speed and the installation spacing and number of steel brushes, thereby maintaining average torque balance and instantaneous pulsation balance.

[0013] Although the present invention has already provided a brush head structure that can effectively solve the problems of average torque balance and instantaneous pulsation balance, in order to further reduce the friction between the brush head and the impermeable wall and the differential vibration between the forward and reverse brush heads, the present invention also provides a vibration damping mechanism for shock absorption, reducing the jumping and shaking of the entire brush wall device. Specifically, the preferred method is as follows: the vibration damping mechanism adopts a hydraulic bushing that can transmit axial and radial support force / pressure and absorb vibration. Specifically, the brush head frame has a base, and two slot frames are arranged in parallel on both sides of the base. Each slot frame has a mounting hole at both ends. The mounting hole is used to install the slot frame on the frame body through a mounting pin. A rubber bushing or hydraulic bushing for shock absorption is installed between the frame body and the pin.

[0014] Preferably, the vibration damping mechanism adopts a combination of floating shaft pin connection and spring damping. The specific preferred scheme is as follows: the brush head frame has a base, and two slot frames are arranged parallel to each other on both sides of the base. Each slot frame has a strip hole at both ends that is perpendicular to the axial space of the rotating drum and faces the wall to be brushed. A shaft pin is slidably installed in the strip hole. A first sleeve for installing a damping spring is fixedly connected to the side of the base near the frame. The other end of the damping spring is abutted against the frame. When the net external force generated by the brush head rotating in both directions is not zero, a torque is generated. At this time, under the action of the torque, the pin installed in the slot will adaptively slide back and forth in the slot. However, since there is a damping spring in a compressed state installed between the base and the frame, the pin must overcome the elastic force of the damping spring during the reciprocating sliding process in the slot, thereby achieving an adaptive floating damping effect. This minimizes the torque and vibration of the brush head frame transmitted to the frame, thus maintaining the overall stability of the frame. This ensures that the wire bristles always rotate in close contact with the curved surface of the waterproof wall, achieving the best technical effect of removing foreign objects / impurities.

[0015] To further improve the constant rotational speed among the three brush heads, preferably, a synchronous flow divider and combiner valve is provided in the hydraulic drive circuit of the three hydraulic motors. The oil inlet of the synchronous flow divider and combiner valve is connected to the system oil supply pipeline, and the two oil outlets are respectively connected to the parallel oil circuit of the hydraulic motor of the two first brush heads and the oil circuit of the hydraulic motor of the second brush head. The flow divider ratio of the synchronous flow divider and combiner valve is matched with the total displacement of the two first brush head hydraulic motors and the displacement of the second brush head hydraulic motor, so that the rotational angular velocity of the first brush head and the second brush head remains constant and synchronized.

[0016] To improve the fit between the brush head and the sidewall of the seepage barrier, and to increase the brushing efficiency and effect per unit time, preferably, the frame is provided with at least two sets of symmetrically distributed anti-torsion guide components. The anti-torsion guide components include guide wheels, wheel frames, and elastic pre-tensioners. The guide wheels are mounted on both axial ends of the frame via the wheel frames. The elastic pre-tensioners are disposed between the wheel frames and the frame. The wheel surface of the guide wheels abuts against the inner sidewall of the seepage barrier groove section to limit the circumferential torsion and radial sway of the frame, ensuring that the first brush head and the second brush head are always effectively in contact with the surface of the seepage barrier to be brushed.

[0017] Beneficial effects:

[0018] 1. This invention, through a symmetrically arranged reverse-rotating brush head structure and precise matching of the number of steel brushes and contact phase, ensures that the torque generated by the brush heads operating in both directions is completely canceled out at any given time. This achieves average torque balance during long-term operation, eliminating overall swaying, shaking, and jumping of the brush head, and also eliminates high-frequency vibrations caused by instantaneous torque pulsations. This ensures that the brush head and the waterproof wall surface remain stably adhered, fundamentally avoiding problems of missed brushing and incomplete cleaning, and significantly improving the uniformity and reliability of cleaning joint surfaces.

[0019] 2. This invention utilizes a staggered arrangement of steel brushes along the axial direction of the rotating drum, ensuring a continuous and uninterrupted brushing range. A single rotation is sufficient to completely cover the preset axial brushing surface, eliminating any blind spots. Compared to a single-row steel brush structure, this significantly improves the brushing width and work efficiency per unit time. Simultaneously, it avoids excessive wear caused by multiple sets of steel brushes concentrated in the same circumference, balancing brush wear and extending the overall service life of the steel brushes.

[0020] 3. This invention, through its axially telescopic and lockable steel brush structure, allows for flexible adjustment and locking of the effective length of the steel brush according to the actual wear of the bristles. This ensures that the effective brushing radius of the steel brush is always maintained within the preset working range, eliminating the need to replace the entire steel brush after the bristles wear down. This significantly improves the utilization rate of steel brush consumables, reduces consumable costs in engineering construction, and minimizes downtime for on-site consumable replacement, thereby improving overall construction efficiency.

[0021] 4. This invention employs two adaptable vibration damping mechanisms: it can absorb vibrations generated during brush head operation through rubber or hydraulic bushings, and it can also counteract torque fluctuations and vibrations caused by the forward and reverse rotation of the brush head through an adaptive floating structure using floating pins and damping springs. This blocks the transmission of vibrations to the frame, further suppresses the overall vibration of the brush, ensures continuous and effective contact between the steel wire bristles and the wall surface, and improves operational adaptability under complex working conditions.

[0022] 5. This invention, through the hydraulic circuit design of the synchronous diversion and collection valve, precisely matches the displacement of the hydraulic motors of the forward and reverse brush heads, ensuring that the rotational angular velocity of the first and second brush heads remains constant and synchronized, thus ensuring the continuous and stable torque cancellation effect. Through the symmetrically arranged anti-torsion guide components, the circumferential torsion and radial sway of the frame within the groove section can be effectively limited, further ensuring that the brush head always effectively adheres to the wall surface to be cleaned, avoiding cleaning failure caused by frame tilting, and improving the reliability and environmental adaptability of the equipment operation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a front view of the entire wall brush device of the present invention.

[0025] Figure 2 It is an isometric view of the brush head structure.

[0026] Figure 3 yes Figure 2 Top view.

[0027] Figure 4 yes Figure 3 Full sectional view with the central section symbol AA.

[0028] Figure 5 yes Figure 4 Enlarged view of the structure in area B.

[0029] Figure 6 yes Figure 2 Another visual structural axonometric drawing.

[0030] Figure 7 yes Figure 6 Enlarged view of the structure in the C region.

[0031] Figure 8 yes Figure 2 Another visual structural axonometric drawing.

[0032] Figure 9 yes Figure 8 Enlarged view of the structure in the middle D region.

[0033] Figure 10 This is a diagram showing the force on the pivot pin when the brush head rotates clockwise.

[0034] Figure 11 This is a diagram showing the force on the pivot pin when the brush head rotates counterclockwise.

[0035] Figure 12 This is a schematic diagram of a rotating drum with three brush heads discretely installed using an axial reciprocating folding trajectory.

[0036] Figure 13 This is a schematic diagram of a rotating drum with steel wire bristles installed using a continuous axial reciprocating folding line for a single brush head.

[0037] Figure 14 This is a schematic diagram of a rotating drum with steel wire bristles installed in a parallel spiral pattern for a single brush head.

[0038] In the diagram: 100-Frame; 200-First brush head; 300-Second brush head; 1-Brush head frame; 11-Slot frame; 12-Shaft pin; 13-Bushing; 14-First sleeve; 2-Hydraulic motor; 3-Rotating drum; 4-Steel brush; 41-Second sleeve; 42-Third sleeve; 43-Positioning hole; 44-Steel wire bristles. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0044] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] Example 1:

[0046] like Figure 1 As shown, this embodiment provides a multi-steel-brush wall brusher based on symmetrical arrangement, including a frame 100. A first brush head 200 and a second brush head 300 are respectively installed on one side of the frame 100, with the second brush head 300 located in the middle. The first brush heads 200 are symmetrically installed on both sides of the second brush head 300. The rotation direction of the first brush head 200 is opposite to the rotation direction of the second brush head 300. The total number of steel brushes 4 installed on the two first brush heads 200 is equal to the number of steel brushes 4 or steel wire bristles 44 on the second brush head 300. During any complete rotation cycle T, the number of steel brushes 4 on the second brush head 300 that come into contact with the seepage-proof wall is equal to the number of steel brushes 4 on the two first brush heads 200 that come into contact with the seepage-proof wall.

[0047] This embodiment is the basic implementation of the invention. During operation, the wall brush is hoisted as a whole into the groove of the anti-seepage wall to be cleaned by ground hoisting equipment, so that the first brush head 200 and the second brush head 300 are in contact with the anti-seepage wall surface to be cleaned, and the first brush head 200 and the second brush head 300 are driven to rotate in opposite directions to brush away and clean the mud, sediment and other debris attached to the wall surface.

[0048] During operation, since the two first brush heads 200 are symmetrically arranged on both sides of the second brush head 300, and the first brush heads 200 and the second brush head 300 rotate in opposite directions, the torque generated by the first brush heads 200 on both sides is opposite in direction to the torque generated by the second brush head 300 in the middle. At the same time, through matching the arrangement of steel brushes 4 or steel wire bristles 44, the total number of steel brushes 4 in the two first brush heads 200 is equal to the arrangement of steel brushes 4 or steel wire bristles 44 in the second brush head 300, and the arrangement of steel brushes 4 or steel wire bristles 44 in contact with the seepage-proof wall is maintained within any complete rotation cycle T during rotation. Maintaining consistency ensures that the working torque in both directions can be completely canceled out at any time, fundamentally solving the problem of unbalanced average torque in existing wall brushers. This prevents the wall brusher from swaying, shaking, or jumping within the groove section, ensuring that the first brush head 200 and the second brush head 300 are always in effective contact with the surface of the anti-seepage wall, avoiding problems such as missed brushing or incomplete cleaning. At the same time, by matching the arrangement of the contact steel brush 4 or steel wire bristles 44 in real time, the instantaneous torque pulsation phenomenon is eliminated, significantly reducing the high-frequency vibration of the equipment during operation, improving cleaning efficiency and operational stability, and ensuring the cleaning quality of the anti-seepage wall joint surface.

[0049] Example 2:

[0050] like Figures 1-4 , Figure 12 As shown, this embodiment provides a multi-steel-brush wall brusher based on symmetrical arrangement, including a frame 100. A first brush head 200 and a second brush head 300 are respectively installed on one side of the frame 100, with the second brush head 300 located in the middle. The first brush heads 200 are symmetrically installed on both sides of the second brush head 300. The rotation direction of the first brush head 200 is opposite to the rotation direction of the second brush head 300. The total number of steel brushes 4 installed on the two first brush heads 200 is equal to the number of steel brushes 4 or steel wire bristles 44 on the second brush head 300. During any complete rotation cycle T, the number of steel brushes 4 on the second brush head 300 that come into contact with the seepage-proof wall is equal to the number of steel brushes 4 on the two first brush heads 200 that come into contact with the seepage-proof wall.

[0051] Both the first brush head 200 and the second brush head 300 include a brush head frame 1 for mounting on the frame 100. A hydraulic motor 2 for driving the rotating drum 3 is mounted on the brush head frame 1. Multiple steel brushes 4 are mounted on the circumferential sidewall of the rotating drum 3, and the projections of the steel brushes 4 along the axial direction of the rotating drum 3 are evenly distributed. The effective brushing range of any steel brush 4 located at different axial positions on the rotating drum 3 of the first brush head 200 or the second brush head 300 is continuously and uninterruptedly connected along the axial direction of the rotating drum 3, completely covering the preset axial brushing working surface of the rotating drum 3, with no blind spots in axial brushing.

[0052] Working Principle and Beneficial Effects: This embodiment is a preferred implementation of the invention. Based on the basic scheme of Embodiment 1, the structure of the brush head and the arrangement of the steel brushes 4 are further optimized, achieving precise control of torque balance and a significant improvement in brushing efficiency. During operation, the hydraulic motor 2 drives the rotating drum 3 to rotate, which in turn drives the steel brushes 4 on the rotating drum 3 to rotate synchronously, performing brushing operations on the anti-seepage wall surface. It is worth noting that the arrangement of the hydraulic pipes of the hydraulic motor 2 is existing technology and is not a technical improvement of this invention, so it will not be described in detail here. The projection of the steel brushes 4 on the axial direction of the rotating drum 3 is evenly distributed along the circumference, so that at the same rotation speed, the contact frequency between the steel brushes 4 and the wall surface is uniform and controllable. It is easier to accurately control the arrangement of the steel brushes 4 or steel wire bristles 44 in contact with the wall surface at any time period, ensuring that the torque phase of the first brush head 200 and the second brush head 300 is completely synchronized, further enhancing the average torque balance effect, while effectively suppressing instantaneous torque pulsation.

[0053] By staggering the steel brushes 4 along different axial positions of the rotating drum 3, the effective brushing range of the steel brushes 4 is continuously and uninterruptedly connected along the axial direction. Each rotation of the rotating drum 3 can completely cover the preset axial brushing working surface without any blind spots in axial brushing. Compared with the arrangement of a single row of steel brushes 4, this greatly improves the brushing width and work efficiency per unit time. At the same time, it avoids the over-brushing and unnecessary wear caused by multiple sets of steel brushes 4 concentrated in the same circumferential position, balances the wear of the steel brushes 4, extends the service life of the steel brushes 4, and further reduces the engineering application cost.

[0054] Example 3:

[0055] like Figure 1 , Figures 3-5 As shown, this embodiment provides a multi-steel-brush wall brusher based on symmetrical arrangement, including a frame 100. A first brush head 200 and a second brush head 300 are respectively installed on one side of the frame 100, with the second brush head 300 located in the middle. The first brush heads 200 are symmetrically installed on both sides of the second brush head 300. The rotation direction of the first brush head 200 is opposite to the rotation direction of the second brush head 300. The total number of steel brushes 4 installed on the two first brush heads 200 is equal to the number of steel brushes 4 or steel wire bristles 44 on the second brush head 300. During any complete rotation cycle T, the number of steel brushes 4 on the second brush head 300 that come into contact with the seepage-proof wall is equal to the number of steel brushes 4 on the two first brush heads 200 that come into contact with the seepage-proof wall.

[0056] The steel brush 4 includes a second sleeve 41 fixedly installed on the circumferential side wall of the rotating drum 3, a third sleeve 42 axially lockable and slidingly nested with the second sleeve 41, and steel wire bristles 44 fixed at one end inside the third sleeve 42 and radially distributed at the other end. Multiple positioning holes 43 for installing locking elements are provided axially between the second sleeve 41 and the third sleeve 42 to fix the relative axial position between the second sleeve 41 and the third sleeve 42.

[0057] Based on the basic scheme, this embodiment optimizes the structure of the steel brush 4, realizing the adjustment of the effective length of the steel brush 4 and greatly improving the utilization rate of consumables. When the steel brush 4 is in a brand new state, the second sleeve 41 and the third sleeve 42 are in the maximum nesting state. At this time, the overall length of the steel brush 4 is the shortest designed length, and the steel wire bristles 44 contact the anti-seepage wall surface with a preset effective radius to perform normal brushing operations.

[0058] As operating time increases, the wire bristles 44 will wear down due to continuous friction, and the effective brushing radius will gradually shrink. At this point, the locking between the second sleeve 41 and the third sleeve 42 can be released, and the axial position of the third sleeve 42 relative to the second sleeve 41 can be adjusted to compensate for the length loss due to wear of the wire bristles 44, restoring the effective brushing radius of the steel brush 4 to the preset operating range. Then, by using the locking device in conjunction with the corresponding positioning hole 43, the relative position of the second sleeve 41 and the third sleeve 42 can be fixed, and the brushing operation can continue. The steel brush 4 should be replaced as a whole when the relative position of the second sleeve 41 and the third sleeve 42 reaches the designed maximum elongation and the remaining length of the wire bristles 44 reaches its usage limit.

[0059] This embodiment significantly improves the utilization rate of steel brush 4 consumables through the retractable and lockable steel brush 4 structure, avoiding the waste of replacing the entire steel brush 44 when only a portion of the bristles are worn, and significantly reducing the consumable cost in engineering construction; at the same time, it reduces the frequency of on-site replacement of steel brush 4 and downtime, improves the overall construction efficiency, and is suitable for the needs of long-term continuous anti-seepage wall cleaning operations.

[0060] Example 4:

[0061] like Figures 1-4 , Figures 12-14As shown, this embodiment provides a multi-steel-brush wall brusher based on symmetrical arrangement, including a frame 100. A first brush head 200 and a second brush head 300 are respectively installed on one side of the frame 100, with the second brush head 300 located in the middle. The first brush heads 200 are symmetrically installed on both sides of the second brush head 300. The rotation direction of the first brush head 200 is opposite to the rotation direction of the second brush head 300. The total number of steel brushes 4 installed on the two first brush heads 200 is equal to the number of steel wire bristles 44 on the second brush head 300. During any complete rotation cycle T, the number of steel wire bristles 44 on the second brush head 300 that come into contact with the seepage-proof wall is equal to the number of steel brushes 4 on the two first brush heads 200 that come into contact with the seepage-proof wall.

[0062] Both the first brush head 200 and the second brush head 300 include a brush head frame 1 for mounting on the frame 100. A hydraulic motor 2 for driving the rotating drum 3 is mounted on the brush head frame 1. A brush groove, replacing the steel brush 4, is fixedly provided on the circumferential side wall of the rotating drum 3 for mounting steel wire bristles 44. The brush grooves are arranged in a sinusoidal, axial reciprocating, or parallel spiral pattern, and the axial projection of the brush grooves is continuous and uninterrupted. The biggest difference between this embodiment and embodiments 1-3 is that the discrete steel wire bristles 44 are replaced with continuous ones, thus fundamentally eliminating the cause of instantaneous torque pulsation and resulting in a smoother operation.

[0063] This embodiment, based on the basic scheme, provides a continuous brush installation method to replace the discrete steel brush 4 structure, thus eliminating the problem of instantaneous torque pulsation at its source. During operation, the hydraulic motor 2 drives the rotating drum 3 to rotate, which in turn drives the continuously installed steel wire bristles 44 in the brush groove to rotate synchronously, performing continuous brushing operations on the anti-seepage wall surface.

[0064] Because the brush grooves are continuously arranged in a sinusoidal, axial reciprocating, or parallel spiral pattern, and the axial projection is continuous and uninterrupted, the steel wire bristles 44 maintain continuous contact with the waterproof wall surface at any given moment during the rotation of the drum 3. There is no problem of fluctuation in the number of contacting steel brushes 4, which completely eliminates the instantaneous torque pulsation caused by changes in the arrangement of contacting steel brushes 4 or steel wire bristles 44. At the same time, the continuous arrangement of steel wire bristles 44 ensures that the contact area of ​​the bristles in the forward and reverse directions remains consistent when the first brush head 200 and the second brush head 300 rotate in opposite directions. The torque cancellation effect is more stable and continuous, further enhancing the torque balance performance of the wall brusher, eliminating high-frequency vibration of the equipment, ensuring continuous and effective adhesion between the steel wire bristles 44 and the wall surface, and significantly improving the uniformity and cleaning effect of the brushing operation.

[0065] Meanwhile, the continuous brush groove arrangement can completely cover the axial brushing working surface of the rotating drum 3, without any brushing blind spots. A single rotation of the rotating drum 3 can achieve full coverage cleaning of the entire working surface, resulting in higher work efficiency and making it suitable for anti-seepage wall construction scenarios with extremely high requirements for cleaning uniformity.

[0066] Example 5:

[0067] like Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, this embodiment provides a multi-steel-brush wall brusher based on symmetrical arrangement, including a frame 100. A first brush head 200 and a second brush head 300 are respectively installed on one side of the frame 100, with the second brush head 300 located in the middle. The first brush heads 200 are symmetrically installed on both sides of the second brush head 300. The rotation direction of the first brush head 200 is opposite to the rotation direction of the second brush head 300. The total number of steel brushes 4 installed on the two first brush heads 200 is equal to the number of steel brushes 4 or steel wire bristles 44 on the second brush head 300. During any complete rotation cycle T, the number of steel brushes 4 on the second brush head 300 that come into contact with the seepage-proof wall is equal to the number of steel brushes 4 on the two first brush heads 200 that come into contact with the seepage-proof wall.

[0068] Both the first brush head 200 and the second brush head 300 include a brush head frame 1 for mounting on the frame 100. The brush head frame 1 has a base, and two slot frames 11 are arranged in parallel on both sides of the base. Each slot frame 11 has mounting holes at both ends. The slot frame 11 is mounted on the frame 100 through mounting pins 12. A rubber bushing or hydraulic bushing 13 for shock absorption is installed between the frame 100 and the pins 12.

[0069] This embodiment adds a bushing-type vibration damping mechanism to the basic scheme to further suppress the transmission of vibrations generated by the brush head operation to the frame 100 and improve the stability of the equipment operation. The brush head frame 1 is installed on the frame 100 through the mounting holes on the slot frame 11 via the shaft pin 12. The rubber bushing or hydraulic bushing 13 set between the shaft pin 12 and the frame 100 can not only stably transmit the support force required for brush head operation and ensure effective contact between the brush head and the wall, but also effectively absorb the vibration and torque fluctuations generated during the operation of the first brush head 200 and the second brush head 300 through the elastic deformation of the bushing itself, and block the transmission of vibration to the frame 100.

[0070] This embodiment further reduces the overall vibration of the wall brush by using a vibration-damping design with a rubber bushing or hydraulic bushing 13, avoiding problems such as the brush head separating from the wall or not adhering tightly due to vibration, thus ensuring the continuous effectiveness of the brushing operation; at the same time, it reduces the wear of various connecting parts of the equipment caused by vibration, extends the overall service life of the equipment, has a simple structure, is easy to install and maintain, and is suitable for anti-seepage wall cleaning operations under normal working conditions.

[0071] Example 6:

[0072] like Figure 1 , Figure 2 , Figures 8-11 As shown, this embodiment provides a multi-steel-brush wall brusher based on symmetrical arrangement, including a frame 100. A first brush head 200 and a second brush head 300 are respectively installed on one side of the frame 100, with the second brush head 300 located in the middle. The first brush heads 200 are symmetrically installed on both sides of the second brush head 300. The rotation direction of the first brush head 200 is opposite to the rotation direction of the second brush head 300. The total number of steel brushes 4 installed on the two first brush heads 200 is equal to the number of steel brushes 4 or steel wire bristles 44 on the second brush head 300. During any complete rotation cycle T, the number of steel brushes 4 on the second brush head 300 that come into contact with the seepage-proof wall is equal to the number of steel brushes 4 on the two first brush heads 200 that come into contact with the seepage-proof wall.

[0073] Both the first brush head 200 and the second brush head 300 include a brush head frame 1 for mounting on the frame 100. The brush head frame 1 has a base, and two slot frames 11 are arranged parallel to each other on both sides of the base. Each slot frame 11 has a strip hole at both ends that is perpendicular to the axial space of the rotating drum 3 and faces the anti-seepage wall to be brushed. A shaft pin 12 is slidably installed in the strip hole. A first sleeve 14 for installing a shock-absorbing spring is fixedly connected to the side of the base near the frame 100. The other end of the shock-absorbing spring is abutted against the frame 100.

[0074] This embodiment, based on the basic scheme, provides an adaptive floating vibration damping mechanism that can better offset the torque fluctuations generated by the forward and reverse rotation of the brush head, adapting to the operational needs under complex working conditions. During operation, the first brush head 200 and the second brush head 300 rotate in opposite directions. The brush head frame 1 will be subjected to alternating forces due to the torque fluctuations generated by the forward and reverse rotation. At this time, the shaft pin 12 installed in the slot can adaptively reciprocate along the slot, cooperating with the damping spring in a compressed state between the base and the frame 100 to buffer and absorb the alternating forces and vibrations. See also Figures 10-11 As shown, when the brush head is rotating forward or backward, the pressure F1 and tension F2 acting on the pins 12 of the left and right slot frames 11 are in opposite directions. At this time, the damping springs on both sides are under different force states, and the damping effect is also different.

[0075] When the brush head is subjected to a positive torque, the pin 12 slides along the slot in the first direction, and the damping spring is further compressed to offset the impact of the positive torque. When the brush head is subjected to a negative torque, the pin 12 slides along the slot in the second direction, and the damping spring rebounds to release energy, offsetting the impact of the negative torque. This achieves adaptive cancellation of torque fluctuations and vibrations generated by the forward and reverse rotation of the brush head, minimizing the transmission of vibration and torque from the brush head frame 1 to the frame 100, and ensuring the overall stability of the frame 100.

[0076] This embodiment utilizes an adaptive floating structure with floating pivot pins and shock-absorbing springs to effectively absorb instantaneous torque pulsations and alternating vibrations generated during brush head operation. This further eliminates the jumping and shaking of the brush, ensuring that the steel wire bristles 44 are always in close contact with the waterproof wall surface, thus improving the adaptability and cleaning effect under complex working conditions. At the same time, this structure can adaptively compensate for unevenness of the wall surface, ensuring continuous and effective contact between the bristles and the wall surface, further improving the reliability of the cleaning operation.

[0077] Example 7:

[0078] like Figure 1 As shown, this embodiment provides a multi-steel-brush wall brusher based on symmetrical arrangement, including a frame 100. A first brush head 200 and a second brush head 300 are respectively installed on one side of the frame 100, with the second brush head 300 located in the middle. The first brush heads 200 are symmetrically installed on both sides of the second brush head 300. The rotation direction of the first brush head 200 is opposite to the rotation direction of the second brush head 300. The total number of steel brushes 4 installed on the two first brush heads 200 is equal to the number of steel brushes 4 or steel wire bristles 44 on the second brush head 300. During any complete rotation cycle T, the number of steel brushes 4 on the second brush head 300 that come into contact with the seepage-proof wall is equal to the number of steel brushes 4 on the two first brush heads 200 that come into contact with the seepage-proof wall.

[0079] The hydraulic drive circuit of the three hydraulic motors 2 is equipped with a synchronous flow divider and combiner valve. The oil inlet of the synchronous flow divider and combiner valve is connected to the system oil supply pipeline, and the two oil outlets are respectively connected to the parallel oil circuit of the hydraulic motors 2 of the two first brush heads 200 and the oil circuit of the hydraulic motor 2 of the second brush head 300. The flow divider ratio of the synchronous flow divider and combiner valve is matched with the total displacement of the two first brush head 200 hydraulic motors and the displacement of the second brush head 300 hydraulic motor, so that the rotational angular velocity of the first brush head 200 and the second brush head 300 remains constant and synchronized. The frame 100 is provided with at least two sets of symmetrically distributed anti-torsion guide components. The anti-torsion guide components include guide wheels, wheel frames and elastic pretensioners. The guide wheels are installed at both ends of the axial direction of the frame 100 through the wheel frames. The elastic pretensioners are set between the wheel frames and the frame 100. The wheel surface of the guide wheel abuts against the inner side wall of the anti-seepage wall groove section to limit the circumferential torsion and radial sway of the frame 100, and to ensure that the first brush head 200 and the second brush head 300 are always in effective contact with the anti-seepage wall surface to be brushed.

[0080] This embodiment optimizes the synchronous drive control of multiple brush heads and the guide and limit structure of the frame 100 based on the basic scheme, further ensuring the continuous stability of torque balance and the reliability of brush head contact with the wall. During operation, the system's oil supply line supplies oil to the synchronous flow divider valve. The synchronous flow divider valve accurately distributes hydraulic oil to the oil circuits of the parallel hydraulic motors 2 of the two first brush heads 200 and the hydraulic motor 2 of the second brush head 300 according to the preset flow divider ratio. Through the precise matching of the flow divider ratio and the displacement of the hydraulic motors 2, the rotational angular velocity of the first brush head 200 and the second brush head 300 remains constant and synchronized. This ensures the phase consistency of the rotation of the forward and reverse brush heads from the drive source, ensuring that the number of steel brushes 4 or steel wire bristles 44 in contact with the wall is always equal at any time. The torque cancellation effect is continuous and stable, avoiding the problem of asynchronous brush head speed and torque balance failure caused by fluctuations in the hydraulic system flow.

[0081] Meanwhile, the anti-torsion guide components symmetrically arranged at both ends of the frame 100 push the guide wheels to stably abut against the inner wall of the anti-seepage wall section through the elastic pre-tightening components. This can effectively limit the circumferential torsion and radial sway of the frame 100 in the section, prevent the frame 100 from tilting during operation, and ensure that the first brush head 200 and the second brush head 300 always maintain effective contact with the anti-seepage wall surface to be cleaned, thus eliminating problems such as brush head contact failure and cleaning blind spots caused by the tilt of the frame 100.

[0082] This embodiment further enhances the operational stability and reliability of the wall brusher from two dimensions: drive control and structural limitation. It is made possible by the hydraulic synchronization design of the synchronous diversion and collection valve and the limiting design of the anti-torsion guide component. This ensures the continuous effectiveness of the torque balance effect and is suitable for cleaning operations of deep and complex trench sections of anti-seepage walls. It can fully guarantee the cleaning quality of the joint surfaces of high-requirement anti-seepage wall projects.

[0083] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-steel-brush wall brusher based on symmetrical arrangement, comprising a frame (100), wherein a first brush head (200) and a second brush head (300) are respectively installed on one side of the frame (100), the second brush head (300) is located in the middle, and the first brush head (200) is symmetrically installed on both sides of the second brush head (300). The rotation direction of the first brush head (200) is opposite to the rotation direction of the second brush head (300), and the total number of steel brushes (4) installed on the two first brush heads (200) is equal to the number of steel brushes (4) or steel wire bristles (44) on the second brush head (300). During any complete rotation cycle T during rotation, the number of steel brushes (4) on the second brush head (300) in contact with the seepage-proof wall is equal to the number of steel brushes (4) on the two first brush heads (200) in contact with the seepage-proof wall.

2. The wall brusher based on symmetrical arrangement of multiple steel brushes according to claim 1, characterized in that: The first brush head (200) and the second brush head (300) both include a brush head frame (1) for mounting on the frame (100). A hydraulic motor (2) for driving the rotating drum (3) to rotate is mounted on the brush head frame (1). A plurality of steel brushes (4) are mounted on the circumferential sidewall of the rotating drum (3). The projection of the steel brushes (4) on the axial direction of the rotating drum (3) is evenly distributed along the circumferential direction of the rotating drum (3).

3. The wall brusher based on symmetrical arrangement of multiple steel brushes according to claim 2, characterized in that: The effective brushing range of any of the steel brushes (4) located at different axial positions on the rotating drum (3) of the first brush head (200) or the second brush head (300) is continuously and uninterruptedly connected along the axial direction of the rotating drum (3), completely covering the preset axial brushing working surface of the rotating drum (3), with no axial brushing blind spots.

4. The multi-steel-brush wall brusher based on symmetrical arrangement according to claim 2 or 3, characterized in that: The steel brush (4) includes a second sleeve (41) fixedly installed on the circumferential side wall of the rotating drum (3), a third sleeve (42) which is axially lockable and slidably nested with the second sleeve (41), and steel wire bristles (44) fixedly installed in the third sleeve (42) at one end and radially spread out at the other end.

5. The wall brusher based on symmetrical arrangement of multiple steel brushes according to claim 4, characterized in that: The second sleeve (41) and the third sleeve (42) are provided with a plurality of positioning holes (43) for installing locking parts at axial intervals to fix the relative axial position between the second sleeve (41) and the third sleeve (42).

6. The wall brusher based on symmetrical arrangement of multiple steel brushes according to claim 1, characterized in that: The first brush head (200) and the second brush head (300) both include a brush head frame (1) for mounting on the frame (100). The brush head frame (1) is equipped with a hydraulic motor (2) for driving the rotating drum (3) to rotate. The rotating drum (3) has a brush groove fixedly provided on its circumferential side wall for mounting steel wire bristles (44) and replacing the steel brush (4). The brush groove is arranged in the form of a sine line, an axial reciprocating folding line or a parallel spiral line, and the axial projection of the brush groove is continuous and uninterrupted.

7. The multi-steel-brush wall brusher based on symmetrical arrangement according to claim 2 or 6, characterized in that: The brush head holder (1) has a base, on which two slots (11) are arranged in parallel on both sides of the base. Each slot (11) has mounting holes at both ends. The slots (11) are mounted on the frame (100) through mounting pins (12). A rubber bushing or hydraulic bushing (13) for shock absorption is installed between the frame (100) and the pins (12).

8. The multi-steel-brush wall brusher based on symmetrical arrangement according to claim 2 or 6, characterized in that: The brush head frame (1) has a base, on which two slot frames (11) are arranged in parallel on both sides of the base. Each slot frame (11) has a strip hole at both ends that is perpendicular to the axial space of the rotating drum (3) and faces the wall to be brushed. A shaft pin (12) is slidably installed in the strip hole. A first sleeve (14) for installing a shock-absorbing spring is fixedly connected to the side of the base near the frame (100). The other end of the shock-absorbing spring is abutted against the frame (100).

9. The wall brusher based on symmetrical arrangement of multiple steel brushes according to claim 2, characterized in that, The hydraulic drive circuits of the three hydraulic motors (2) are equipped with synchronous flow divider and combiner valves. The inlet of the synchronous flow divider and combiner valve is connected to the system oil supply pipeline, and the two outlets are connected to the parallel oil circuits of the hydraulic motors (2) of the two first brush heads (200) and the oil circuit of the hydraulic motor (2) of the second brush head (300). The flow divider ratio of the synchronous flow divider and combiner valve is matched with the total displacement of the two first brush head (200) hydraulic motors and the displacement of the second brush head (300) hydraulic motor, so that the rotational angular velocity of the first brush head (200) and the second brush head (300) remains constant and synchronized.

10. The wall brusher based on symmetrical arrangement of multiple steel brushes according to claim 1, characterized in that, The frame (100) is provided with at least two sets of symmetrically distributed anti-torsion guide components. The anti-torsion guide components include guide wheels, wheel frames and elastic pretensioners. The guide wheels are installed at both ends of the axial direction of the frame (100) through the wheel frames. The elastic pretensioners are arranged between the wheel frames and the frame (100). The wheel surface of the guide wheel abuts against the inner side wall of the anti-seepage wall groove section to limit the circumferential torsion and radial sway of the frame (100) and ensure that the first brush head (200) and the second brush head (300) are always in effective contact with the anti-seepage wall surface to be brushed.

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