A trenching apparatus for constructing a diaphragm wall

Abstract

The present application relates to the technical field of underground continuous wall construction, and especially relates to a trenching device for building underground continuous wall. It comprises a frame and walking wheels arranged at the four corners of the bottom of the frame. A traction frame is arranged at the right side of the frame. A forming groove is arranged through the middle of the surface of the frame. A communication groove is arranged through the frame at the right end of the forming groove. A driving mechanism is arranged on the frame at one side of the communication groove. A slotting mechanism is arranged in the forming groove of the frame. One end of the slotting mechanism is movably hinged to the driving mechanism. The trenching device has reasonable structure design, is convenient to operate, can continuously work, has high flexibility, is especially suitable for shallow trench excavation, can quickly and efficiently complete trenching, and solves the problems existing in the prior art.

Description

Technical Field

[0001] This invention relates to the field of diaphragm wall construction technology, and in particular to a trenching device for constructing diaphragm walls. Background Technology

[0002] A diaphragm wall, also known as a diaphragm wall, is a continuous reinforced concrete wall constructed underground, primarily used for water interception, seepage prevention, load-bearing, and water retention. The construction process of a diaphragm wall generally includes the construction of the guide wall, preparation of slurry, excavation of the trench, erection of the joint formwork, fabrication and placement of the reinforcing cage, pouring of concrete, and the formation of the diaphragm wall.

[0003] Currently, when constructing diaphragm walls in engineering projects, mechanical equipment is commonly used for trench excavation, such as trenching machines. These machines are heavy and require large hoisting equipment, resulting in poor overall flexibility and limited continuous operation capabilities. They are suitable for trenches tens of meters deep. For shallow trenches only a few meters deep, this is overkill, and their work efficiency is actually lower. Since trench excavation is crucial for building diaphragm walls, how to excavate quickly and efficiently is an important issue facing modern construction. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this invention provides a trenching device for constructing underground continuous walls. It has a reasonable structural design, is easy to operate, can operate continuously, and has high flexibility. It is especially suitable for shallow trench excavation and can complete trenching quickly and efficiently, thus solving the problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] A trenching device for constructing diaphragm walls includes a frame and four traveling wheels at the bottom corners of the frame. A traction frame is provided on the right side of the frame. A forming groove is provided through the middle of the frame surface. A connecting groove is provided through the frame at the right end of the forming groove. A drive mechanism is provided on the frame on one side of the connecting groove. A grooving mechanism is provided in the forming groove of the frame. One end of the grooving mechanism is movably hinged to the drive mechanism.

[0007] Optionally, the grooving mechanism includes a steel frame with a drive gear at the right end of the steel frame. The drive gear is connected to the steel frame via right clamps on its front and rear sides. Driven gears are respectively provided on the upper and lower sides of the left end of the steel frame. Each driven gear is connected to the steel frame via left clamps on its front and rear sides. A digging chain is wound around the drive gear and the two driven gears. The width of the digging chain is greater than the width of the steel frame. Several cutting plates are spaced apart along the length of the digging chain on its outer side. A mud-removing component is provided on the left side of each cutting plate. A rotating wheel that cooperates with the mud-removing component is provided on the steel frame near the drive gear. The rotating wheel is connected to the steel frame via a bracket.

[0008] Optionally, the outer end of the cutting plate is provided with a serrated cutting edge.

[0009] Optionally, the mud-removing component includes a bushing disposed at the bottom of the left side wall of the cutting plate and fixedly connected to the digging chain, a multi-strand steel fork movably fitting against the left side wall of the cutting plate, a fork handle vertically disposed at the bottom of the multi-strand steel fork in front of the bushing, a pin movably hinged to the bushing on the fork handle, a positioning seat disposed at the rear end of the pin, and a spring piece movably abutting against the fork handle on the inner wall of the digging chain corresponding to the fork handle position, and the rotating wheel directly impacting the end position of the fork handle.

[0010] Optionally, the steel frame is arranged in an obtuse triangle with the driving gear and two driven gears forming three points.

[0011] Optionally, the drive mechanism includes bearing seats symmetrically arranged on the front and rear sides of the frame of the connecting groove. The rotating shaft of the drive gear passes through the right clamp of the steel frame and is movably hinged to the bearing seat on the corresponding side. A hydraulic motor is provided on the frame, and the output shaft of the hydraulic motor is connected to the rotating shaft of the drive gear through a planetary reducer.

[0012] Optionally, it also includes a sludge suction mechanism, which includes a limiting sleeve disposed at the left end of the forming groove. Clamping plates are respectively provided on the inner walls of the frame on both the front and rear sides of the limiting sleeve. The limiting sleeve is movably hinged to the clamping plate on the corresponding side by a clamping shaft disposed on its front and rear sides. A sludge suction steel pipe is movably clamped inside the limiting sleeve. An air inlet steel pipe is provided parallel to the outside of the sludge suction steel pipe. The lower end of the air inlet steel pipe is provided with an elbow that penetrates the side wall of the sludge suction steel pipe, and its upper end is connected to the sludge suction steel pipe through a fixed seat. A buffer groove is provided on the inner wall of the frame at the position corresponding to the limiting sleeve.

[0013] The advantages of this invention, which adopts the above technical solution, are:

[0014] 1. Trench excavation can be completed without the need for large hoisting equipment;

[0015] 2. It can operate continuously, completing an entire trench section with high work efficiency;

[0016] 3. During the process of digging soil in the trench, it can prevent the soil from sticking and throw the excavated soil outwards;

[0017] 4. The mud at the bottom of the trench can be pumped out to reduce its mud content, thus preventing the mud from failing to protect the trench walls, cool the equipment, and lubricate the cutting surface due to its high mud content. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2This is a schematic diagram of the three-dimensional structure of the rack;

[0020] Figure 3 A three-dimensional structural diagram of the suction steel pipe and the air intake steel pipe;

[0021] Figure 4 A three-dimensional structural diagram of the grooving mechanism;

[0022] Figure 5 for Figure 4 Enlarged structural diagram of section A in the middle;

[0023] Figure 6 A three-dimensional structural diagram of the soil cutting board and mud-removing component;

[0024] Figure 7 A three-dimensional structural diagram of the mud-removing component;

[0025] In the diagram, 1. Frame; 2. Traveling wheel; 3. Traction frame; 4. Forming groove; 5. Connecting groove; 6. Steel frame; 7. Drive gear; 8. Right clamping plate; 9. Driven gear; 10. Left clamping plate; 11. Digging chain; 12. Cutting plate; 13. Mud-removing component; 1301. Bushing; 1302. Multi-strand steel fork; 1303. Fork handle; 1304. Shaft pin; 1305. Positioning seat; 1306. Spring; 14. Rotary wheel; 15. Support; 16. Serrated cutting edge; 17. Bearing seat; 18. Hydraulic motor; 19. Planetary reducer; 20. Limiting sleeve; 21. Clamping plate; 22. Shaft clamp; 23. Mud suction steel pipe; 24. Air intake steel pipe; 25. Elbow; 26. Fixed seat; 27. Buffer groove. Detailed Implementation

[0026] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application; however, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0027] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0029] like Figure 1-7 As shown in this embodiment, a trenching device for constructing a diaphragm wall includes a frame 1 and four traveling wheels 2 located at the bottom corners of the frame 1. A traction frame 3 is provided on the right side of the frame 1. A forming groove 4 is provided through the middle of the surface of the frame 1. A connecting groove 5 is provided through the frame 1 at the right end of the forming groove 4. A drive mechanism is provided on the frame 1 on one side of the connecting groove 5. A grooving mechanism is provided in the forming groove 4 of the frame 1. One end of the grooving mechanism is movably hinged to the drive mechanism.

[0030] Optionally, the grooving mechanism includes a steel frame 6, with a drive gear 7 at the right end of the steel frame 6. The drive gear 7 is connected to the steel frame via right clamps 8 on its front and rear sides. Driven gears 9 are respectively provided on the upper and lower sides of the left end of the steel frame 6. Each driven gear 9 is connected to the steel frame 6 via left clamps 10 on its front and rear sides. A digging chain 11 is wound around the drive gear 7 and the two driven gears 9. The width of the digging chain 11 is greater than the width of the steel frame 6. Several cutting plates 12 are spaced apart along the length of the digging chain 11. A mud-removing component 13 is provided on the left side of each cutting plate 12. A rotating wheel 14 that cooperates with the mud-removing component 13 is provided on the steel frame 6 near the drive gear 7. The rotating wheel 14 is connected to the steel frame 6 via a bracket 15.

[0031] Optionally, the outer end of the cutting plate 12 is provided with a serrated cutting edge 16.

[0032] Optionally, the mud-removing component 13 includes a bushing 1301 disposed at the bottom of the left side wall of the cutting plate 12 and fixedly connected to the digging chain 11, a multi-strand steel fork 1302 movably attached to the left side wall of the cutting plate 12, a fork handle 1303 vertically disposed at the bottom of the multi-strand steel fork 1302 on the front side of the bushing 1301, a pivot pin 1304 movably hinged to the bushing 1301 on the pivot pin 1303, a positioning seat 1305 disposed at the rear end of the pivot pin 1304, and a spring piece 1306 movably abutting against the pivot pin 1303 on the inner wall of the digging chain 11 corresponding to the position of the pivot pin 1303, and the rotating wheel 14 directly impacting the end position of the pivot pin 1303.

[0033] Optionally, the steel frame 6 is arranged in an obtuse triangle with the driving gear 7 and two driven gears 9 forming the three points.

[0034] Optionally, the drive mechanism includes bearing seats 17 symmetrically arranged on the front and rear sides of the frame 1 of the connecting groove 5. The rotating shaft of the drive gear 7 passes through the right clamping plate 8 of the steel frame 6 and is movably hinged to the bearing seat 17 on the corresponding side. A hydraulic motor 18 is provided on the frame 1, and the output shaft of the hydraulic motor 18 is connected to the rotating shaft of the drive gear 7 via a planetary reducer 19.

[0035] Optionally, the system also includes a sludge suction mechanism, which includes a limiting sleeve 20 located at the left end of the forming groove 4. Clamping plates 21 are respectively provided on the inner walls of the frame 1 on both the front and rear sides of the limiting sleeve 20. The limiting sleeve 20 is movably hinged to the clamping plate 21 on the corresponding side by a clamping shaft 22 located on its front and rear sides. A sludge suction steel pipe 23 is movably clamped inside the limiting sleeve 20. An air inlet steel pipe 24 is provided parallel to the outside of the sludge suction steel pipe 23. The lower end of the air inlet steel pipe 24 is provided with an elbow 25 that penetrates the side wall of the sludge suction steel pipe 23, and its upper end is connected to the sludge suction steel pipe 23 through a fixing seat 26. A buffer groove 27 is provided on the inner wall of the frame 1 at the position corresponding to the limiting sleeve 20.

[0036] Before using this device, the drive unit needs to be connected to the traction frame 3. The drive unit drives the frame 1, which is then moved to the position to be excavated via the traveling wheels 2. During use, the hydraulic motor 18 is started. The hydraulic motor 18 transmits power to the drive gear 7 via the planetary reducer 19. As the drive gear 7 rotates, it drives the digging chain 11 to rotate, causing the cutting plate 12 at the bottom left end of the trenching mechanism to push the soil to the right. It should be noted that the drive unit remains stationary at this time. As the cutting plate transports the soil to the right end of the steel frame 6, the fork handle 1303 of the mud-pulling component 13 contacts the rotating wheel 14. As the excavating chain 11 rotates, the fork handle 1303 rotates within the bushing 1301 via the shaft pin 1304, thus separating the multi-strand steel forks 1302 that were originally closed on the cutting plate 12. This ejects the soil adhering to the cutting plate 12 outwards, preventing it from re-entering the trench with the excavating chain 11 (to reduce wear on the mud-removing parts 13, water needs to be injected into the trench; the water mixes with the mud in the trench to form mud slurry, which can act as a wall stabilizer). As the cutting plate 12 continuously turns the soil outwards from the trench, the entire trenching mechanism rotates downwards along the axis of the drive gear 7, gradually changing the trenching mechanism from a "—" to a "|", thus forming a trench of fixed depth. The length of the steel frame 6 determines the depth of the trench. Once the trenching mechanism is in a vertical position, the drive equipment is activated, moving the frame 1 to the right, allowing the trenching mechanism to work continuously, forming a complete deep trench. In addition, the mud and sand in the slurry need to be discharged in a timely manner. By inserting the suction pipe 23 into the bottom of the trench and connecting the blower to the air inlet pipe 24, the gas enters the air inlet pipe 24 at high speed and is blown into the suction pipe 23 through the elbow 25, creating a negative pressure inside the suction pipe 23, thereby drawing the slurry out and effectively reducing the mud content of the slurry. Its structure is reasonably designed, easy to operate, allows for continuous operation, and has high flexibility. It is especially suitable for shallow trench excavation, enabling rapid and efficient trenching and solving the problems existing in current technologies.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention fall within the protection scope of the present invention.

[0038] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A trenching device for constructing diaphragm walls, characterized in that, The device includes a frame and four wheels at the bottom corners of the frame. A traction frame is located on the right side of the frame. A forming groove runs through the center of the frame surface. A connecting groove runs through the frame at the right end of the forming groove. A drive mechanism is located on the frame on one side of the connecting groove. A grooving mechanism is located within the forming groove of the frame, with one end of the grooving mechanism hinged to the drive mechanism. The grooving mechanism includes a steel frame. A drive gear is located at the right end of the steel frame. The drive gear is connected to the steel frame via right clamps on its front and rear sides. Driven gears are located on the upper and lower sides of the left end of the steel frame. Each driven gear is connected to the steel frame via left clamps on its front and rear sides. A digging chain is wound around the drive gear and the two driven gears. The width of the excavating chain is greater than the width of the steel frame. Several cutting plates are spaced apart along the length of the excavating chain on its outer side. A mud-removing component is provided on the left side of each cutting plate. A rotating wheel that cooperates with the mud-removing component is provided on the steel frame near the drive gear. The rotating wheel is connected to the steel frame through a bracket. The mud-removing component includes a bushing set at the bottom of the left side wall of the cutting plate and fixed to the excavating chain. A multi-strand steel fork is movably attached to the left side wall of the cutting plate. A fork handle is vertically provided at the bottom of the multi-strand steel fork in front of the bushing. A pin is provided on the fork handle and movably hinged in the bushing. A positioning seat is provided at the rear end of the pin. A spring piece is provided on the inner wall of the excavating chain at the position corresponding to the fork handle and movably abuts against the fork handle. The rotating wheel is positioned directly opposite the end of the fork handle.

2. The trenching device for constructing a diaphragm wall according to claim 1, characterized in that, The outer end of the cutting plate is provided with a serrated blade.

3. The trenching device for constructing a diaphragm wall according to claim 1, characterized in that, The steel frame is arranged in an obtuse triangle with the driving gear and two driven gears forming three points.

4. The trenching device for constructing a diaphragm wall according to claim 1, characterized in that, The drive mechanism includes bearing seats symmetrically arranged on the front and rear sides of the frame of the connecting groove. The rotating shaft of the drive gear passes through the right clamp of the steel frame and is movably hinged to the bearing seat on the corresponding side. A hydraulic motor is provided on the frame, and the output shaft of the hydraulic motor is connected to the rotating shaft of the drive gear through a planetary reducer.

5. The trenching device for constructing a diaphragm wall according to claim 1, characterized in that, It also includes a sludge suction mechanism, which includes a limiting sleeve set at the left end of the forming groove. Clamping plates are respectively provided on the inner walls of the frame on both the front and rear sides of the limiting sleeve. The limiting sleeve is movably hinged to the clamping plate on the corresponding side by a clamping shaft set on its front and rear sides. A sludge suction steel pipe is movably clamped inside the limiting sleeve. An air inlet steel pipe is provided parallel to the outside of the sludge suction steel pipe. The lower end of the air inlet steel pipe is provided with an elbow that penetrates the side wall of the sludge suction steel pipe, and its upper end is connected to the sludge suction steel pipe through a fixed seat. A buffer groove is provided on the inner wall of the frame at the position corresponding to the limiting sleeve.

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