A new type of TRD mechanical cutting chain and cutter head automatic cleaning device

Abstract

The application provides a novel TRD mechanical cutting chain and cutter head automatic cleaning device, and belongs to the technical field of foundation construction, which comprises a high-pressure water cleaning unit and a mechanical cleaning unit symmetrically arranged on both sides of a TRD mechanical driving mechanism shell; the high-pressure water cleaning unit comprises a high-pressure water gun continuous row nozzle connected with the driving mechanism shell through a first telescopic connecting rod; the mechanical cleaning unit comprises an automatic rotating brush connected with the driving mechanism shell through a second telescopic connecting rod; the high-pressure water gun continuous row nozzle is located at the upper part of the automatic rotating brush; the application can timely remove the attachments on the cutting chain and the cutter head without stopping the machine, thereby guaranteeing the cutting efficiency and construction quality of the TRD machine and improving the continuity and economy of the overall construction.

Description

Technical Field

[0001] This invention relates to the field of foundation construction technology, specifically to a novel TRD mechanical cutting chain and automatic cleaning device for the cutter head. Background Technology

[0002] The TRD (Trench Cutting Re-mixing Deep Wall Method) is an efficient and continuous cement-soil mixing wall construction technology that has been widely used in deep foundation pit water-stop curtain engineering in recent years. With its advantages such as high wall quality, wide adaptability to strata, and large construction depth, this method has gradually become one of the preferred technologies for foundation pit support and waterproofing under complex geological conditions.

[0003] However, in actual construction, especially in areas with high clay content and complex geological conditions (such as the Yangtze River floodplain), the cutting chain and cutterhead of TRD machinery are easily covered with clay during excavation. As the construction depth increases, reaching 70 meters and requiring entry into rock, the clay adhesion becomes even more severe, leading to a significant decrease in cutterhead cutting efficiency, a slowdown in construction speed, and even affecting the continuity and quality of the wall. Traditional cleaning methods often rely on manual cleaning after machine shutdown, which is not only inefficient but also interrupts the construction process, increasing the construction period and labor costs.

[0004] Currently, there is no device on the market that can automatically and efficiently clean the cutting chain and cutter head during continuous TRD machinery operation. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing technologies by providing a novel automatic cleaning device for TRD mechanical cutting chains and cutter heads. This device can promptly remove deposits from the cutting chains and cutter heads without stopping the machine, ensuring the cutting efficiency and construction quality of TRD machinery, and improving the continuity and economy of the overall construction process.

[0006] Technical Solution: The present invention discloses a novel automatic cleaning device for TRD mechanical cutting chains and cutter heads, comprising a high-pressure water cleaning unit and a mechanical cleaning unit symmetrically arranged on both sides of the housing of the TRD mechanical drive mechanism; the high-pressure water cleaning unit includes a high-pressure water gun nozzle connected to the housing of the drive mechanism via a first telescopic connecting rod; the mechanical cleaning unit includes an automatic rotating brush connected to the housing of the drive mechanism via a second telescopic connecting rod; the high-pressure water gun nozzle is located above the automatic rotating brush.

[0007] This invention employs a synergistic cleaning process of "rinsing followed by scrubbing." The high-pressure water gun at the top, with its continuous nozzles, first sprays a high-pressure water curtain to initially impact, wet, and peel away the clay on the cutter head and chain. Subsequently, an automatic rotating brush at the bottom performs high-speed physical scrubbing on the rinsed surface, thoroughly scraping away any remaining stubborn clay. The two units are symmetrically arranged, ensuring effective cleaning on both sides of the cutting box, thus achieving automation and high efficiency in the cleaning process.

[0008] Furthermore, the high-pressure water gun nozzle array includes at least one manifold, the length of which is not less than the width of the widest cutting disc of the TRD. A set of high-pressure nozzles are evenly spaced along the length of the manifold. High-pressure water enters the manifold through the water supply pipe, and after the pressure is balanced inside, it is simultaneously ejected from the set of evenly spaced high-pressure nozzles, forming a uniform high-pressure water curtain covering the entire working width of the disc. This ensures comprehensive coverage of the cleaning range and avoids leaving uncleaned strips on both sides of the disc due to insufficient cleaning width, thereby ensuring the cleanliness of the entire cutting surface and maintaining uniform cutting resistance and efficiency.

[0009] Furthermore, there are at least two first telescopic connecting rods, symmetrically arranged above the continuous nozzles of the high-pressure water gun; the two or more symmetrically arranged telescopic connecting rods provide stable and balanced support for the continuous nozzles.

[0010] Furthermore, the automatic rotating brush includes a rotating inner rod, and a sleeve is fitted onto the outer wall of the rotating inner rod. The sleeve has regularly arranged holes, and brush bristles are fixed in the holes. The rotating inner rod rotates at high speed under the drive of a driving device (such as a hydraulic motor), and the sleeve fitted onto it rotates accordingly. The regularly fixed brush bristles on it continuously scrape and brush the surface of the cutter disc.

[0011] Furthermore, there are at least two second telescopic links, symmetrically positioned above the automatically rotating brush.

[0012] Furthermore, the high-pressure water cleaning unit also includes a high-pressure water supply device, which includes a booster pump and a water supply pipe connected to a water source. The outlet of the water supply pipe is connected to the high-pressure water gun nozzles. A flow meter is installed on the water supply pipe to monitor and regulate the water pressure. The booster pump pressurizes the water from the water source to the required high pressure and delivers it to the nozzles through the water supply pipe. The flow meter monitors the water pressure and flow rate in the pipe in real time. The operator can remotely adjust the pump output or valve opening based on the data read.

[0013] Furthermore, a protective cover is provided on the drive mechanism housing, and a cavity is formed inside the protective cover to accommodate the high-pressure water gun nozzles and the automatic rotating brush; when the cleaning device is not required to work, the entire cleaning unit, namely the nozzles and brushes, can retract and be retracted into the cavity of the protective cover.

[0014] Furthermore, the protective cover is detachably connected to the drive mechanism housing via a movable latch.

[0015] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: (1) This invention achieves efficient automated cleaning by combining "flushing and brushing" through the coordinated arrangement of high-pressure water jet nozzles and automatic rotating brushes, fundamentally solving the problem of reduced efficiency caused by clay adhesion on the cutter head; the high-pressure water curtain first impacts, wets and softens the stubborn clay, and then the rotating brushes deeply clean the surface after water flushing. The two work in sequence to form a "1+1>2" cleaning effect, which is much more thorough and faster than a single cleaning method. This ensures that the TRD cutter head and chain are always kept clean, maintaining the highest cutting efficiency and forward speed, and avoiding the problem of forced shutdown due to clay adhesion. (2) This invention, through the combined design of a telescopic connecting rod and a detachable protective cover, greatly improves the reliability and maintainability of the equipment while ensuring the flexibility of the cleaning device's adjustment. The telescopic connecting rod allows the operator to remotely and precisely adjust the distance and angle between the cleaning unit and the cutter head according to the working conditions, so as to optimize the cleaning effect and avoid improper wear. When the cleaning unit is not working, it can be retracted into the cavity of the protective cover, effectively preventing it from being bumped, scratched, or blocked by mud and sand in complex construction environments, thus extending the service life of the core components. The movable latch allows the protective cover to be quickly opened or removed, which greatly facilitates the inspection, replacement, and maintenance of vulnerable parts such as nozzles and brushes, significantly reducing the downtime required for maintenance and ensuring the continuity and economy of construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the high-pressure water cleaning unit and the mechanical cleaning unit in this invention; Figure 3 This is a schematic diagram of the structure of the protective cover in this invention. Detailed Implementation

[0017] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments described.

[0018] like Figure 1The diagram illustrates a novel automatic cleaning device for TRD mechanical cutting chains and cutter heads, comprising a high-pressure water cleaning unit and a mechanical cleaning unit symmetrically arranged on both sides of the TRD mechanical drive mechanism housing. The high-pressure water cleaning unit 1 includes a high-pressure water jet nozzle 102 connected to the drive mechanism housing 3 via two first retractable connecting rods 101. The mechanical cleaning unit 2 includes an automatic rotating brush 202 connected to the drive mechanism housing 3 via two second retractable connecting rods 201. The high-pressure water jet nozzle 102 is located above the automatic rotating brush 202. The high-pressure water cleaning unit 1 also includes a high-pressure water supply device 103, which includes a booster pump and a water supply pipe 104 connected to a water source. The outlet of the water supply pipe 104 is connected to the high-pressure water jet nozzle 102, and a flow meter 105 for monitoring and regulating water pressure is installed on the water supply pipe 104. The cutting chain and cutter head are referenced in the attached diagram as 6.

[0019] like Figure 2 As shown, the high-pressure water gun nozzle 102 includes at least one manifold 102-01. The length of the manifold 102-01 is not less than the width of the widest cutting disc of the TRD. A set of high-pressure nozzles 102-02 are evenly spaced along the length of the manifold 102-01. The automatic rotating brush 202 includes a rotating inner rod 202-01. A sleeve is fitted onto the outer wall of the rotating inner rod 202-01. The sleeve has regularly arranged holes, and brush bristles 202-02 are fixed in the holes.

[0020] like Figure 3 As shown, a protective cover 4 is provided on the drive mechanism housing 3, and the protective cover 4 is detachably connected to the drive mechanism housing 3 by a movable latch 5. The interior of the protective cover 4 has a cavity for accommodating the high-pressure water gun nozzle 102 and the automatic rotating brush 202.

[0021] Workflow: 1. When TRD machinery is working in easily adhered geological conditions such as clay layers, the operator can start the automatic cleaning program in the control panel. 2. After the cleaning unit is positioned, the pressurizing pump of the high-pressure water supply device is started. High-pressure water is delivered to the manifold of the high-pressure water gun nozzles through the water supply pipeline. After the water flow is evenly distributed in the manifold, it is simultaneously sprayed out at high speed from a group of high-pressure nozzles arranged at equal intervals, forming a high-pressure water curtain covering the entire width of the cutter head. 3. Immediately following the high-pressure water rinse (or partially overlapping), the automatic rotating brush starts. Its rotating inner rod rotates at high speed under the drive of the drive device (such as a hydraulic motor), so that the bristles fixed on the sleeve physically scrape the surface of the cutter head and chain. 4. When the TRD machine completes the cleaning of easily adhered formations or when the cleaning task needs to be paused, the operator issues a stop command in the background.

[0022] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A novel automatic cleaning device for TRD mechanical cutting chains and cutter heads, characterized in that: The device includes a high-pressure water cleaning unit and a mechanical cleaning unit symmetrically arranged on both sides of the housing of the TRD mechanical drive mechanism; the high-pressure water cleaning unit (1) includes a high-pressure water gun nozzle (102) connected to the housing of the drive mechanism (3) via a first telescopic link (101); the mechanical cleaning unit (2) includes an automatic rotating brush (202) connected to the housing of the drive mechanism (3) via a second telescopic link (201); the high-pressure water gun nozzle (102) is located above the automatic rotating brush (202).

2. A novel TRD mechanical cutting chain and cutterhead automatic cleaning device according to claim 1, characterized in that: The high-pressure water gun nozzle array (102) includes at least one manifold (102-01), the length of which is not less than the width of the widest cutting disc of the TRD, and a set of high-pressure nozzles (102-02) are arranged at equal intervals along the length of the manifold (102-01).

3. A novel TRD mechanical cutting chain and cutterhead automatic cleaning device according to claim 2, characterized in that: There are at least two first telescopic connecting rods (101), which are symmetrically arranged above the high-pressure water gun nozzles (102).

4. A novel TRD mechanical cutting chain and cutterhead automatic cleaning device according to claim 1, characterized in that: The automatic rotating brush (202) includes a rotating inner rod (202-01), and a sleeve is fitted on the outer wall of the rotating inner rod (202-01). The sleeve has regularly arranged holes, and brush bristles (202-02) are fixed in the holes.

5. A novel TRD mechanical cutting chain and cutterhead automatic cleaning device according to claim 4, characterized in that: There are at least two second retractable links (201), symmetrically arranged above the automatic rotating brush (202).

6. A novel TRD mechanical cutting chain and cutterhead automatic cleaning device according to claim 1, characterized in that: The high-pressure water cleaning unit (1) further includes a high-pressure water supply device (103), which includes a booster pump and a water supply pipe (104) connected to a water source. The outlet of the water supply pipe (104) is connected to the high-pressure water gun nozzle (102), and a flow meter (105) for monitoring and adjusting water pressure is provided on the water supply pipe (104).

7. The novel automatic cleaning device for TRD mechanical cutting chains and cutter heads according to claim 1, characterized in that: The drive mechanism housing (3) is provided with a protective cover (4), and the protective cover (4) has a cavity inside for accommodating the high-pressure water gun nozzle (102) and the automatic rotating brush (202).

8. A novel TRD mechanical cutting chain and cutterhead automatic cleaning device according to claim 7, characterized in that: The protective cover (4) is detachably connected to the drive mechanism housing (3) via a movable latch (5).

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