Underground diaphragm wall grooving operation equipment

Abstract

The utility model discloses underground diaphragm wall grooving operation equipment which comprises a grooving grab bucket frame, a hydraulic cylinder and a sliding block are arranged in the grooving grab bucket frame, and two connecting rods are hinged to the sliding block. A connecting plate is arranged at the bottom end of the grooving grab bucket frame, a grab bucket is hinged to the connecting plate, and the bottom ends of the connecting rods are hinged to the upper end of the grab bucket; the same hinging mechanisms are adopted at the hinging positions of the grab bucket, the connecting plate and the connecting rod, each hinging mechanism comprises a hinging shaft and a shaft sleeve stretching into the grab bucket and the connecting plate, the grab bucket and the connecting plate are provided with shaft grooves, the shaft sleeves can slide along the shaft grooves, the shaft grooves are provided with limiting mechanisms, each limiting mechanism comprises a plurality of blocking parts, each shaft sleeve is provided with an outer groove, and each limiting mechanism further comprises a polygonal column; the connecting plate is provided with a first polygonal groove in the shaft groove, the shaft sleeve is provided with a second polygonal groove, and an extrusion spring is arranged in the first polygonal groove; according to the grooving operation equipment, stable positioning is achieved through cooperation of the shaft sleeve and the polygonal column, and the shaft sleeve is designed to stretch out and draw back along the shaft groove after adjustment, so that convenient assembly and disassembly are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to underground continuous wall construction technical field, concretely relates to a kind of underground continuous wall grooving operation equipment. BACKGROUND

[0002] The main purpose of underground continuous wall construction is to build a continuous reinforced concrete wall, which is used for water interception, seepage prevention, load bearing and water retaining. Specifically, underground continuous wall construction is to excavate a narrow and deep trench along the designed part by using special trenching machinery, and after foundation cleaning, a reinforcement cage is placed in the trench and poured with underwater concrete, and several wall sections are connected to form a whole, forming a continuous underground wall.

[0003] Underground continuous wall construction is generally constructed by crane with hydraulic grab. The hydraulic grab excavates soil along the guide wall to perform trenching construction. The steel wire rope is lowered to make the bucket head of the hydraulic grab contact and grab the soil. At the same time, the main hydraulic cylinder pushes out the piston rod to push the sliding block to move downward, and the lower part of the supporting rod is opened to the both sides to drive the bucket head to close and grab the soil. Finally, the steel wire rope is lifted to take out the bucket body from the trench to unload the soil.

[0004] The friction and collision between the grab bucket and the large-sized sandstone in the working process cause wear and tear to the grab bucket itself. The current grab bucket design is not easy to disassemble. To solve the above problems, the patent document with publication number CN 219058304 U discloses a quick disassembly underground continuous wall grab bucket, which includes a grab bucket 6, a hydraulic cylinder 4, a mounting seat 7 at the bottom of the hydraulic cylinder 4, a mounting groove 8 on the top of the mounting seat 7, a threaded rod 9 on the left and right sides of the mounting seat 7, a threaded sleeve 10 on the threaded rod 9, a mounting hole 11 on the upper left and right ends of the grab bucket 6, and a bolt 12 on the left side of the mounting hole 11 for disassembling the grab bucket 6.

[0005] However, the above-mentioned grab bucket is only positioned and fixed by bolts. The bolts are in direct contact with the working grab bucket, and the grab bucket and the threaded sleeve move relative to each other, which will frequently rub against the fixed bolts of the threaded sleeve, causing the bolts to loosen and the entire structure to be unstable. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of underground continuous wall grooving operation equipment, and stable positioning is realized by shaft sleeve cooperation polygonal column, and the design that shaft sleeve can be telescopic along shaft groove after adjustment is realized, to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of underground continuous wall grooving operation equipment, including grooving grab frame, hydraulic cylinder is contained in the grooving grab frame, the hydraulic cylinder piston rod is connected with sliding block, the grooving grab frame is equipped with the guide groove for the sliding block only vertical sliding, the bottom end of the sliding block is respectively hinged with two connecting rods;The bottom end of the grooving grab frame is equipped with connecting plate, the connecting plate is hinged with grab bucket, the bottom end of the connecting rod is respectively hinged with the upper end of the grab bucket;The hinge joint of the grab bucket with the connecting plate and the connecting rod is all used same hinge joint mechanism, the hinge joint mechanism includes hinge shaft and shaft sleeve that extends into the grab bucket, the connecting plate, the grab bucket, the connecting plate is equipped with the shaft groove corresponding with the shaft sleeve, the shaft sleeve can slide along the shaft groove, the shaft groove is equipped with the limiting mechanism that prevents the shaft sleeve from sliding.

[0008] Preferably, the limiting mechanism includes a plurality of blocking portions arranged around the inner wall of the shaft groove, the shaft sleeve is provided with an outer groove corresponding to the blocking portions, and the shaft sleeve and the blocking portions are staggered by the limiting mechanism.

[0009] Preferably, the limiting mechanism further includes a polygonal column, the connecting plate is provided with a first polygonal groove in the shaft groove, one end of the polygonal column is located in the first polygonal groove, the shaft sleeve is provided with a second polygonal groove corresponding to the first polygonal groove, the first polygonal groove is provided with an extrusion spring, and the other end of the polygonal column is clamped in the second polygonal groove through the extrusion spring.

[0010] Preferably, the shaft sleeve further has a jacking post groove in the second polygonal groove, the jacking post groove is provided with a jacking post, one end of the jacking post abuts against the polygonal column, and the shaft sleeve is provided with a driving structure for driving the jacking post to move.

[0011] Preferably, the driving structure includes a through cavity communicating with the jacking post groove.

[0012] Preferably, the head end of the through cavity is provided with a sealing screw groove, and a sealing screw is threadedly connected to the sealing screw groove.

[0013] Preferably, the shaft sleeve is provided with a hinge shaft groove corresponding to the hinge shaft.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. Stable positioning is achieved by the shaft sleeve cooperating with the polygonal column, and the shaft sleeve can be adjusted to extend or retract along the shaft groove, achieving convenient assembly and disassembly.

[0016] 2. The overall structure is simple, avoiding the use of bolts for fixing the grab bucket, and the stability is high, so it is suitable for promotion. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the utility model;

[0018] Figure 2 is a closed structure schematic diagram of the utility model's grab bucket;

[0019] Figure 3 is a internal structure schematic diagram of the utility model's grab bucket;

[0020] Figure 4 is a limiting mechanism cross section structure schematic diagram of the utility model;

[0021] Figure 5 is a right view structure schematic diagram of the utility model's shaft sleeve.

[0022] In the figure: 1, groove grab bucket frame; 2, hydraulic cylinder; 3, sliding block; 4, connecting rod; 5, connecting plate; 6, grab bucket; 7, hinge shaft; 8, shaft sleeve; 9, shaft groove; 10, blocking part; 11, outer groove; 12, polygonal column; 13, first polygonal groove; 14, second polygonal groove; 15, extrusion spring; 16, jacking post groove; 17, jacking post; 18, through cavity; 19, sealing screw; 20, hinge shaft groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-5This utility model provides a trenching device for underground continuous wall, including a trenching grab bucket frame 1. The grab bucket frame 1 contains a hydraulic cylinder 2, and the piston rod of the hydraulic cylinder 2 is connected to a slider 3. The grab bucket frame 1 has a guide groove for the slider 3 to slide only vertically. Two connecting rods 4 are hinged to the bottom end of the slider 3. A connecting plate 5 is provided at the bottom end of the grab bucket frame 1, and a grab bucket 6 is hinged to the connecting plate 5. The bottom ends of the connecting rods 4 are hinged to the upper ends of the grab bucket 6. The hinges between the grab bucket 6, the connecting plate 5, and the connecting rods 4 all use the same hinge mechanism. The hinge mechanism includes a hinge shaft 7 and a bushing 8 extending into the grab bucket 6 and the connecting plate 5. The grab bucket 6 and the connecting plate 5 are provided with bushings 8 corresponding to the bushings 8. The shaft groove 9 allows the bushing 8 to slide along it. The shaft groove 9 is equipped with a limiting mechanism to prevent the bushing 8 from sliding. During operation, the crane works in conjunction with the trenching grab bucket frame 1 to excavate soil along the guide wall to form a trench. The steel wire rope is lowered so that the grab bucket 6 contacts and grabs the soil. At the same time, the hydraulic cylinder 2 pushes out the piston rod, pushing the slider 3 downward. The lower part of the connecting rod 4 opens to both sides, causing the grab bucket 6 to close and grab the soil. Finally, the steel wire rope is lifted to remove the trenching grab bucket frame 1 from the trench and unload the soil. When the grab bucket 6 needs to be disassembled for replacement or maintenance, the limiting mechanism is removed, and the bushing 8 is fully pushed into the shaft groove 9 by an external pressure device to separate the hinge shaft 7 and the bushing 8. Then, the hinge shaft 7 is separated from the connecting rod 4 and the connecting plate 5, achieving convenient assembly and disassembly.

[0025] Specifically, the limiting mechanism includes a plurality of blocking parts 10 arranged around the inner wall of the shaft groove 9, and the bushing 8 is provided with an outer groove 11 corresponding to the blocking parts 10. The bushing 8 and the blocking parts 10 are staggered by the limiting mechanism. In this embodiment, the bushing 8 can be rotatably adjusted to achieve the correspondence or staggering between the blocking parts 10 and the outer groove 11. Thus, when extension or retraction is required, the blocking parts 10 are aligned with the outer groove 11, and when limiting is required to prevent the bushing 8 from sliding into the shaft groove 9, the bushing is staggered and limited.

[0026] Specifically, the limiting mechanism further includes a polygonal column 12. The connecting plate 5 has a first polygonal groove 13 in the shaft groove 9. One end of the polygonal column 12 is located in the first polygonal groove 13. The bushing 8 has a second polygonal groove 14 corresponding to the first polygonal groove 13. A compression spring 15 is installed in the first polygonal groove 13. The other end of the polygonal column 12 is squeezed by the compression spring 15 and stuck in the second polygonal groove 14. In this embodiment, when the blocking part 10 is misaligned with the outer groove 11, it is necessary to limit the rotation. The anti-rotation is achieved by the two ends of the polygonal column 12 being stuck into the first polygonal groove 13 and the second polygonal groove 14.

[0027] Specifically, the shaft sleeve 8 has a top post slot 16 in the second polygon slot 14, and a top post 17 is arranged in the top post slot 16, one end of the top post 17 abuts against the polygon post 12, and the shaft sleeve 8 is provided with a driving structure for driving the top post 17 to move; in the embodiment, the polygon post 12 is pushed by the top post 17 sliding along the top post slot 16, the top post 17 is longer than the depth of the second polygon slot 14, and the polygon post 12 is separated from the second polygon slot 14 without the top post 17 leaving the top post slot 16.

[0028] Specifically, the driving structure comprises a through cavity 18 communicating with the top post slot 16; in the embodiment, an external hydraulic or pneumatic device with a threaded connector is connected through the through cavity 18, and then high-pressure liquid or gas is introduced into the through cavity 18, so that the top post 17 is moved outward from the top post slot 16 under high pressure.

[0029] Specifically, the through cavity 18 is provided with a sealing screw slot at the head end, and a sealing screw 19 is threadedly connected to the sealing screw slot; in the embodiment, the sealing screw 19 plays a sealing role, and if necessary, sealing glue or a conventional sealing structure can be further applied at the connection position to prevent external water from entering the through cavity 18.

[0030] Specifically, the shaft sleeve 8 is provided with a hinge shaft slot 20 corresponding to the hinge shaft 7; in the embodiment, the hinge shaft 7 and the shaft sleeve 8 are rotationally connected, and the hinge shaft 7 axially positions the shaft sleeve 8.

[0031] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is described in detail below.

[0032] Working principle: during operation, the crane cooperates with the trenching grab frame 1 to perform construction, the trenching grab frame 1 performs trenching construction by excavating soil along the guide wall, the steel wire rope is lowered to make the grab bucket 6 contact and rush to excavate the soil body, at the same time, the hydraulic cylinder 2 pushes out the piston rod to drive the sliding block 3 to move downward, the lower part of the connecting rod 4 is opened to the both sides to drive the grab bucket 6 to close and excavate the soil body, and finally the steel wire rope is lifted to take out the trenching grab frame 1 from the trench to unload the soil.

[0033] When the grab bucket 6 needs to be disassembled for replacement and maintenance, two sealing screws 19 are unscrewed by the external part, then the external hydraulic or pneumatic equipment with threaded connector is connected, then high-pressure liquid or gas is introduced into the through cavity 18, the top post 17 is moved outward from the top post groove 16 under high pressure, the polygonal post 12 presses the compression spring 15, the polygonal post 12 continues to extrude into the first polygonal groove 13, then the polygonal post 12 is separated from the second polygonal groove 14, then the rotatable shaft sleeve 8 is rotated, the outer groove 11 of the shaft sleeve 8 corresponds to the blocking part 10, then the hydraulic or pneumatic equipment is closed, the shaft sleeve 8 is fully pushed into the shaft groove 9 by the external pressure equipment, the hinge shaft 7 is separated from the hinge shaft groove 20, the hinge shaft 7 and the shaft sleeve 8 are separated, then the hinge shaft 7 and the connecting rod 4 and the connecting plate 5 are separated, and the convenient assembly and disassembly are realized.

[0034] When installing, the extrusion spring 15 and the polygonal post 12 are installed into the first polygonal groove 13, the blocking part 10 corresponds to the outer groove 11, then the shaft sleeve 8 is installed, the shaft sleeve 8 is pressed into the shaft groove 9 by the external pressure equipment, until the connecting rod 4 and the connecting plate 5 can enter between the hinge shafts 7 on both sides and correspond to the hinge shaft groove 20, then the pressing of the shaft sleeve 8 is released, the polygonal post 12 extrudes the shaft sleeve 8 against the hinge shaft 7, the blocking part 10 is separated from the outer groove 11, then the polygonal post 12 enters the second polygonal groove 14 for anti-rotation limiting after the blocking part 10 is staggered with the outer groove 11 by rotating the shaft sleeve 8.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An underground diaphragm wall trenching apparatus comprising a trenching grab frame (1), characterised in that, The groove digging grab frame (1) is internally provided with a hydraulic cylinder (2), the piston rod of the hydraulic cylinder (2) is connected with a sliding block (3), the groove digging grab frame (1) is internally provided with a guide groove for enabling the sliding block (3) to slide vertically, and the bottom end of the sliding block (3) is respectively hinged with two connecting rods (4); the bottom end of the groove digging grab frame (1) is provided with a connecting plate (5), the connecting plate (5) is hinged with a grab bucket (6), and the bottom end of the connecting rod (4) is respectively hinged with the upper end of the grab bucket (6); the hinge joints of the grab bucket (6) and the connecting plate (5) and the connecting rod (4) all adopt the same hinge mechanism, the hinge mechanism comprises a hinge shaft (7) and a shaft sleeve (8) extending into the grab bucket (6) and the connecting plate (5), the grab bucket (6) and the connecting plate (5) are provided with an axle groove (9) corresponding to the shaft sleeve (8), the shaft sleeve (8) can slide along the axle groove (9), and the axle groove (9) is provided with a limiting mechanism for preventing the shaft sleeve (8) from sliding.

2. The underground continuous wall trenching apparatus according to claim 1, wherein The limiting mechanism comprises a plurality of blocking portions (10) arranged around the inner wall of the axle groove (9), the shaft sleeve (8) is provided with an outer groove (11) corresponding to the blocking portion (10), and the shaft sleeve (8) and the blocking portion (10) are staggered by the limiting mechanism.

3. The underground continuous wall trenching apparatus according to claim 2, wherein The limiting mechanism further comprises a polygonal column (12), the connecting plate (5) is provided with a first polygonal groove (13) in the axle groove (9), one end of the polygonal column (12) is located in the first polygonal groove (13), the shaft sleeve (8) is provided with a second polygonal groove (14) corresponding to the first polygonal groove (13), the first polygonal groove (13) is internally provided with an extrusion spring (15), and the polygonal column (12) is clamped in the second polygonal groove (14) by the extrusion spring (15).

4. The underground continuous wall trenching apparatus according to claim 3, wherein The shaft sleeve (8) is further provided with a jacking column groove (16) in the second polygonal groove (14), the jacking column groove (16) is internally provided with a jacking column (17), one end of the jacking column (17) abuts against the polygonal column (12), and the shaft sleeve (8) is provided with a driving structure for driving the jacking column (17) to move.

5. The underground continuous wall trenching apparatus according to claim 4, wherein The driving structure comprises a through cavity (18) communicating with the jacking column groove (16).

6. The underground continuous wall trenching apparatus according to claim 5, wherein The head end of the through cavity (18) is provided with a sealing screw groove, and a sealing screw (19) is threadedly connected.

7. The underground continuous wall trenching apparatus according to claim 1, wherein The shaft sleeve (8) is provided with a hinge shaft groove (20) corresponding to the hinge shaft (7).

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