An auxiliary trenching device for a special-shaped under-continuous wall

Abstract

The utility model relates to auxiliary grooving technology field of underground continuous wall and disclose a kind of auxiliary grooving device of special-shaped underground continuous wall, including guide wall, the auxiliary mechanism is arranged in the inside of guide wall, the fixed mechanism is arranged in the front and back of auxiliary mechanism, the auxiliary mechanism includes lock catch pipe, the lock catch pipe bottom is inserted in the bottom of guide wall, first hoop is slidably connected with the periphery top of lock catch pipe, the first hoop is set to guide wall top, the second hoop is set to the left side of first hoop, when using, by the auxiliary mechanism set, for special-shaped ground continuous wall such as Z shape, when using three grab method construction, the third grab construction turning section is easy to cause the problem of over-excavation due to the deflection of grab bucket to the already excavated groove section, the device is set lock catch pipe at the edge of first groove and second groove and third groove in the already grabbed groove section, the bottom of lock catch pipe is designed as conical and can be stably embedded into soil mass, effectively prevent the hole collapse caused by grab bucket disturbance or soil loose.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary trenching technology for diaphragm walls, specifically to an auxiliary trenching device for irregularly shaped diaphragm walls. Background Technology

[0002] Currently, diaphragm walls are widely used in construction pits, subway stations, and other projects. Depending on the requirements, the plan shape of the diaphragm wall can be set as a straight line, an "L" shape, a "Z" shape, etc. Diaphragm walls that are not straight lines are usually called irregular-shaped diaphragm walls. During trenching construction, a single diaphragm wall is usually constructed using the "three-grab method," meaning the trenching machine first completes the trenching work on the two sides of the diaphragm wall, and then completes the trenching work on the remaining middle section. When constructing irregular-shaped diaphragm walls, taking a "Z" shape as an example, because the first two grabs remove the soil from the straight section, when the last grab is used to construct the turning section, the grab bucket of the trenching machine may deflect towards the already trenched section, leading to over-excavation or even hole collapse. This results in serious quality defects in the diaphragm wall and increases the cost of dealing with these defects during later excavation. Furthermore, because irregular-shaped diaphragm walls are located at corners, dealing with defects takes a long time, affecting subsequent construction operations. Therefore, it is necessary to design an auxiliary trenching device for irregularly shaped diaphragm walls to solve problems such as over-excavation and hole collapse during trenching of irregularly shaped diaphragm walls, which will greatly facilitate and enhance the value of on-site construction. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary trenching device for irregularly shaped underground continuous walls, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary trenching device for irregularly shaped underground continuous wall, including a guide wall, an auxiliary mechanism is provided inside the guide wall, and a fixing mechanism is provided on the front and rear sides of the auxiliary mechanism; The auxiliary mechanism includes a locking tube, the bottom of which is inserted into the bottom of the guide wall. A first clamp is slidably connected to the top of the locking tube and is located at the top of the guide wall. A second clamp is located to the left of the first clamp and is slidably connected to the top of the locking tube. The second clamp is located at the top of the guide wall. Fixed sleeves are slidably connected to the front and rear ends of the second clamp. Fixed shafts are threadedly connected to the inside of the fixed sleeves. A support frame is provided around the locking tube. A steel frame is fixedly connected to the left side of the support frame. The bottom of the steel frame is inserted into the bottom of the guide wall. A connecting seat is slidably connected to the top of the steel frame. Connecting brackets are fixedly connected to the front and rear sides of the connecting seat. A fixing block is fixedly connected to the bottom right side of the connecting bracket and is slidably connected to the inside of the fixing sleeve.

[0005] Preferably, the fixing shaft passes through the first clamp, the second clamp, and the fixing block, which facilitates the stability between the first clamp, the second clamp, and the fixing sleeve through the fixing shaft.

[0006] Preferably, the left side of the first clamp and the right side of the second clamp are in contact with each other, and the bottom of the first clamp and the second clamp are in contact with the top of the guide wall, so as to facilitate the fixing of the locking tube by the first clamp and the second clamp.

[0007] Preferably, the locking tube and the steel frame are slidably connected inside the guide wall, and the bottom of the locking tube is conical. The inner side of the support frame is in contact with the outer side of the locking tube, and the support frame is V-shaped, which facilitates further fixing of the locking tube by the support frame and the steel frame.

[0008] Preferably, the guide wall is Z-shaped, with a first grab groove and a second grab groove respectively provided on the inner left side of the upper end and the inner right side of the lower end of the guide wall. Two sets of locking tubes, first clamps, second clamps, steel frames, support frames, fixing sleeves, fixing shafts, connecting seats, connecting frames, and fixing blocks are provided, and are respectively located inside the first grab groove and the second grab groove. A third grab groove is provided inside the guide wall, and is located between the first grab groove and the second grab groove. By providing two sets, locking tubes can be placed near the third grab groove in the first grab groove to prevent the grab bucket from deflecting during the third grab.

[0009] Preferably, the fixing mechanism includes a steel section, which is disposed on the top of the guide wall. A connecting block is disposed on the right side of the steel section, and the connecting block is fixedly connected to the front side of the fixing sleeve. A bolt is threadedly connected inside the connecting block.

[0010] Preferably, the bottom of the steel profile is in contact with the top of the guide wall, the left side of the connecting block is in contact with the right side of the steel profile, the bolt is threaded inside the steel profile, and the steel profile, connecting block and bolt are provided in two sets, symmetrically distributed at the top of the first and second gripping grooves, so that the fixing sleeve can be fixed by the steel profile, connecting block and bolt, thereby ensuring the stability between the first clamp and the second clamp.

[0011] Compared with the prior art, this utility model provides an auxiliary trenching device for irregularly shaped underground continuous walls, which has the following beneficial effects: This auxiliary trenching device for irregularly shaped diaphragm walls addresses the issue of over-excavation during the three-grab method construction of irregularly shaped diaphragm walls, such as Z-shaped ones, where the grab bucket tends to deflect towards the already excavated section at the turning point of the third grab. The device incorporates locking tubes at the edges of the first, second, and third grabs within the already excavated section. The tapered bottom of these locking tubes securely embeds into the soil, effectively preventing hole collapse caused by grab bucket disturbance or loose soil. This design is particularly suitable for soft soil and sandy strata prone to collapse. The coordinated use of the locking tubes, first clamp, and second clamp provides stable clamping and positioning of the locking tubes, preventing displacement or swaying during trenching. Furthermore, the V-shaped support frame provides external support for the locking tubes, and the steel frame is connected to the bottom of the guide wall, further enhancing the overall structural load-bearing capacity. This effectively resists lateral soil pressure during trenching, reducing the risk of collapse and ensuring construction safety. The device utilizes the Z-shaped guide wall... The structure is adapted to the shape of irregularly shaped ground ties. Two sets of auxiliary mechanisms correspond to the first and second grab slot positions respectively, forming a stable support system to ensure that the groove size of the turning section meets the design requirements and reduce the structural stress hazards caused by shape deviation.

[0012] This irregular-shaped diaphragm wall auxiliary trenching device, through the set fixing mechanism, when the first clamp and the second clamp are outside the locking tube, the fixing sleeve will drive the connecting block to contact the right side of the steel section. The combination of the steel section, the connecting block and the bolt can quickly fix the fixing sleeve, thereby further fixing the locking tube. At the same time, the steel section needs to be fixed to the guide wall by external expansion bolts. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the left-side structure of this utility model; Figure 3 This is a schematic diagram of the auxiliary mechanism structure; Figure 4 This is a schematic diagram of the outer structure of the locking tube; Figure 5 This is a schematic diagram of the outer structure of the first and second clamps; Figure 6 This is a schematic diagram of the top structure of the steel frame; Figure 7 This is a schematic diagram of the front and rear structures of the connector. Figure 8This is a schematic diagram of the fixed mechanism.

[0014] In the diagram: 1. Guide wall; 2. Auxiliary mechanism; 3. Fixing mechanism; 21. Locking tube; 22. First clamp; 23. Second clamp; 24. Steel frame; 25. Support frame; 26. Fixing sleeve; 27. Fixing shaft; 28. Connecting seat; 29. ​​Connecting frame; 291. Fixing block; 31. Section steel; 32. Connecting block; 33. Bolt. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] This utility model provides the following technical solution: Example 1

[0018] Please see Figures 1-8 This utility model provides a technical solution: an auxiliary trenching device for irregularly shaped underground continuous wall, including a guide wall 1, an auxiliary mechanism 2 is provided inside the guide wall 1, and a fixing mechanism 3 is provided on the front and rear sides of the auxiliary mechanism 2. The auxiliary mechanism 2 includes a locking tube 21, the bottom of which is inserted into the bottom of the guide wall 1. A first clamp 22 is slidably connected to the top of the locking tube 21 and is located at the top of the guide wall 1. A second clamp 23 is located to the left of the first clamp 22 and is slidably connected to the top of the locking tube 21 and is located at the top of the guide wall 1. Fixed sleeves 26 are slidably connected to the front and rear ends of the second clamp 23. A fixed shaft 27 is threadedly connected inside the fixed sleeve 26. A support frame 25 is located around the locking tube 21. A steel frame 24 is fixedly connected to the left of the support frame 25 and is inserted into the bottom of the guide wall 1. A connecting seat 28 is slidably connected to the top of the steel frame 24. Connecting brackets 29 are fixedly connected to the front and rear sides of the connecting seat 28. A fixed block 291 is fixedly connected to the bottom right of the connecting bracket 29 and is slidably connected inside the fixed sleeve 26.

[0019] The fixed shaft 27 passes through the first clamp 22, the second clamp 23 and the fixed block 291, so as to ensure the stability between the first clamp 22, the second clamp 23 and the fixed sleeve 26 through the fixed shaft 27.

[0020] The left side of the first clamp 22 and the right side of the second clamp 23 are in contact with each other, and the bottom of the first clamp 22 and the second clamp 23 are in contact with the top of the guide wall 1, which facilitates the fixing of the locking tube 21 by the first clamp 22 and the second clamp 23.

[0021] The locking tube 21 and the steel frame 24 are slidably connected inside the guide wall 1. The bottom of the locking tube 21 is conical. The inner side of the support frame 25 is in contact with the outer side of the locking tube 21. The support frame 25 is V-shaped, which facilitates the further fixation of the locking tube 21 by the support frame 25 and the steel frame 24.

[0022] The guide wall 1 is Z-shaped. The upper left side and lower right side of the guide wall 1 are respectively provided with a first grab groove and a second grab groove. Two sets of locking tube 21, first clamp 22, second clamp 23, steel frame 24, support frame 25, fixing sleeve 26, fixing shaft 27, connecting seat 28, connecting frame 29 and fixing block 291 are provided and are located inside the first grab groove and the second grab groove respectively. A third grab groove is provided inside the guide wall 1 and is located between the first grab groove and the second grab groove. By setting two sets, the locking tube 21 can be installed near the third grab groove of the first grab groove to prevent the grab bucket from deflecting during the third grab. Example 2

[0023] Please see Figures 1-8 Furthermore, based on Embodiment 1, the fixing mechanism 3 includes a steel section 31, which is set on the top of the guide wall 1. A connecting block 32 is set on the right side of the steel section 31. The connecting block 32 is fixedly connected to the front side of the fixing sleeve 26. A bolt 33 is threadedly connected inside the connecting block 32.

[0024] The bottom of the steel section 31 is in contact with the top of the guide wall 1, the left side of the connecting block 32 is in contact with the right side of the steel section 31, and the bolt 33 is threaded inside the steel section 31. There are two sets of steel section 31, connecting block 32 and bolt 33, which are symmetrically distributed on the top of the first gripping groove and the second gripping groove, so that the fixing sleeve 26 can be fixed by the steel section 31, connecting block 32 and bolt 33, thereby ensuring the stability between the first clamp 22 and the second clamp 23.

[0025] In actual operation, when this device is used for irregularly shaped ground-connected walls, such as Z-shaped ones, and a three-grip method is employed, and when it is necessary to construct a third gripping groove between the first and second gripping grooves, firstly, a locking tube 21 is inserted into the first gripping groove of the already gripped section, with the locking tube 21 positioned at the edge of the first and third gripping grooves. At this point, the first clamp 22 and the second clamp 23 can be slidably connected to the outer periphery of the locking tube 21, with the left side of the first clamp 22 contacting the right side of the second clamp 23. The fixing sleeve 26 is then slidably connected to the outer periphery of the front and rear ends of the first clamp 22 and the second clamp 23, initially securing the first clamp. To stabilize the second clamp 22 and the second clamp 23, the steel frame 24 is inserted into the bottom of the guide wall 1 and placed in the first grab groove. This allows the steel frame 24 to drive the inner side of the support frame 25 to contact the outer side of the locking tube 21, further supporting the locking tube 21. The connecting seat 28 is slid from top to bottom to the top of the steel frame 24. During the sliding process, the connecting seat 28 will drive the fixing block 291 to slide and connect to the inside of the fixing sleeve 26 through the connecting frame 29, thus fixing the steel frame 24. At this time, the fixing shaft 27 is threaded into the fixing block 291, the fixing sleeve 26, the first clamp 22 and the second clamp 23 to ensure the stability of the four components. The steel profile 31 is fixed to the top of the guide wall 1 by external expansion bolts 33 to ensure the stability of the steel profile 31. When the fixing sleeve 26 is slidably connected to the outer periphery of the front end of the first clamp 22 and the second clamp 23, the fixing sleeve 26 will drive the left side of the connecting block 32 to contact the right side of the steel profile 31. The connecting block 32 and the steel profile 31 can be fixed by bolts 33 to ensure the stability of the three and further ensure the stability of the fixing sleeve 26 during operation. Furthermore, the locking tube 21, the first clamp 22, the second clamp 23, the steel frame 24, the support frame 25, the fixing sleeve 26, the fixing shaft 27, the connecting seat 28, the connecting frame 29, and the fixing block 291 are provided in two sets, and are respectively located inside the first gripping groove and the second gripping groove. During the third grabbing operation, the supporting effect of the locking pipe 21 ensures that there is no deflection during grabbing, preventing over-excavation or hole collapse. It effectively prevents hole collapse caused by grab bucket disturbance or loose soil, and is especially suitable for soft soil, sandy and other easily collapsed strata. It can ensure that there is no deflection during grabbing, preventing over-excavation or hole collapse, solving the problems of over-excavation and hole collapse when forming trenches for irregularly shaped diaphragm walls, reducing the cost of handling quality defects in the later stage, reducing the time spent on defect handling, improving the overall construction efficiency, and creating benefits for the project construction. Once the third gripping operation is completed, the above steps are reversed to disassemble these structures, making the operation convenient.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A trenching device for irregularly shaped diaphragm walls, comprising a guide wall (1), characterized in that: The guide wall (1) is provided with an auxiliary mechanism (2), and the auxiliary mechanism (2) is provided with a fixing mechanism (3) on the front and rear sides. The auxiliary mechanism (2) includes a locking tube (21), the bottom of which is inserted into the bottom of the guide wall (1). A first clamp (22) is slidably connected to the top of the outer periphery of the locking tube (21). The first clamp (22) is located at the top of the guide wall (1). A second clamp (23) is located on the left side of the first clamp (22). The second clamp (23) is slidably connected to the top of the outer periphery of the locking tube (21). The second clamp (23) is located at the top of the guide wall (1). Fixed sleeves (26) are slidably connected to the outer periphery of the front and rear ends of the second clamp (23). The fixed sleeve (26) is internally threaded with a fixed shaft (27). The locking tube (21) is surrounded by a support frame (25). A steel frame (24) is fixedly connected to the left side of the support frame (25). The bottom of the steel frame (24) is inserted into the bottom of the guide wall (1). A connecting seat (28) is slidably connected to the top of the steel frame (24). A connecting frame (29) is fixedly connected to the front and rear sides of the connecting seat (28). A fixing block (291) is fixedly connected to the bottom right side of the connecting frame (29). The fixing block (291) is slidably connected to the inside of the fixed sleeve (26).

2. The auxiliary trenching device for irregularly shaped diaphragm walls according to claim 1, characterized in that: The fixed shaft (27) passes through the first clamp (22), the second clamp (23) and the fixed block (291).

3. The auxiliary trenching device for irregularly shaped diaphragm walls according to claim 1, characterized in that: The left side of the first clamp (22) is in contact with the right side of the second clamp (23), and the bottom of the first clamp (22) and the second clamp (23) are in contact with the top of the guide wall (1).

4. The auxiliary trenching device for irregularly shaped diaphragm walls according to claim 1, characterized in that: The locking tube (21) and the steel frame (24) are slidably connected inside the guide wall (1), and the bottom of the locking tube (21) is conical. The inner side of the support frame (25) is in contact with the outer side of the locking tube (21), and the support frame (25) is V-shaped.

5. The auxiliary trenching device for irregularly shaped diaphragm walls according to claim 1, characterized in that: The guide wall (1) is Z-shaped. The upper left side and the lower right side of the guide wall (1) are respectively provided with a first grab groove and a second grab groove. The locking tube (21), the first clamp (22), the second clamp (23), the steel frame (24), the support frame (25), the fixing sleeve (26), the fixing shaft (27), the connecting seat (28), the connecting frame (29) and the fixing block (291) are provided in two sets and are respectively located inside the first grab groove and the second grab groove. The guide wall (1) is provided with a third grab groove and is located between the first grab groove and the second grab groove.

6. The auxiliary trenching device for irregularly shaped diaphragm walls according to claim 1, characterized in that: The fixing mechanism (3) includes a steel section (31), which is located on the top of the guide wall (1). A connecting block (32) is provided on the right side of the steel section (31). The connecting block (32) is fixedly connected to the front side of the fixing sleeve (26). A bolt (33) is threaded inside the connecting block (32).

7. The auxiliary trenching device for irregularly shaped diaphragm walls according to claim 6, characterized in that: The bottom of the steel section (31) is in contact with the top of the guide wall (1), the left side of the connecting block (32) is in contact with the right side of the steel section (31), and the bolt (33) is threaded inside the steel section (31). The steel section (31), the connecting block (32) and the bolt (33) are provided in two sets and are symmetrically distributed on the top of the first grab groove and the second grab groove.

Images