Underground continuous vertical membrane wall construction machine excavation mechanism assembly

Abstract

The present invention discloses an excavation mechanism assembly of an underground continuous vertical membrane wall-building machine. A guide wheel, a driving wheel, and a tensioning wheel are installed on the arm body. The driving wheel is driven by a reducer and a hydraulic motor. The tensioning wheel is provided with a tensioning device. Alternately arranged buckets and mud scrapers are connected to the chain. Wing plates are fixed on both sides of each section of the chain. A square box is fixed to the upper web of the arm body, and the upper wing plates of the chain are inserted into the guide pressure plates of the square box. The chain is located between the two side plates of the arc-shaped guide frame. A row of arc-shaped pressure wheels are installed on the inner wall of the side plate, and the pressure wheels press on the wings on both sides of the chain. The present invention sets an arc-shaped guide frame on the rear side of the tensioning wheel to guide the chain, facilitate the chain to smoothly turn into the square box guide pressure plate, and improve the stability of the chain rotation and non-deflection. The bucket empties the mud thoroughly, and the rotating blade prevents it from solidifying into the bucket. When the mud scraper and the arc-shaped guide frame are connected, the internal rotation recovery of the pin knife is completed, and some of the mud attached to the pin knife is cleaned off.

Description

Technical Field

[0001] The invention relates to an engineering machine for building an underground continuous water retaining wall, in particular to an excavation mechanism assembly of an underground continuous vertical membrane wall building machine. Background Art

[0002] The primary purpose of underground continuous anti-seepage walls (also known as retaining walls) is to address seepage issues in water conservancy projects, such as river embankments, mudflats, deserts, and reservoirs. The key to this construction is to dig a trench to a certain depth.

[0003] A Chinese patent discloses a one-step forming machine for underground continuous retaining walls (CN101619573A). The machine comprises a crawler chassis, a frame, a pivoting chassis, a trenching system mounted on the pivoting chassis, a reinforcement system, a concrete pouring trough, a power system mounted on the frame, an electrical control cabinet, and a hydraulic control cabinet. The trenching system includes a boom, a boom guide system, two chains, multiple buckets and coulters mounted on the chains, and a bucket motor that drives the chains. The buckets and coulters are staggered and mounted on the two chains.

[0004] The shortcomings of the above-mentioned existing technology are: the chain lacks effective guidance in the bent position, resulting in unstable chain rotation; the bucket is not clean in the unloading position, and the bottom of the bucket is prone to sticking to the soil, affecting the subsequent excavation efficiency; the plow blade is not retracted in time, and the friction between the plow blade and the guide plate is large when it moves in the retracted state. Summary of the Invention

[0005] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides an excavation mechanism assembly of an underground continuous vertical membrane wall-building machine.

[0006] The present invention adopts the following technical solution: an underground continuous vertical membrane wall building machine excavation mechanism assembly,

[0007] It includes an arm body and a chain arranged around the arm body;

[0008] A guide wheel is installed at one end of the arm body, and a drive wheel and a tension wheel are installed at the other end of the arm body. The tension wheel is located on the upper side of the arm body; a chain is installed on the guide wheel, the drive wheel and the tension wheel, and the chain is connected to buckets and mud scrapers arranged alternately. Wing plates are fixed on both sides of each section of the chain;

[0009] A long square box with open ends is fixed on the upper side of the arm, and the upper layer of the chain is passed through the square box;

[0010] An arc-shaped guide frame is arranged between the tensioning wheel and the square box; the arc-shaped guide frame is fixed on the upper side of the arm body, and has side panels on both sides of the arc-shaped guide frame, and the upper side edges of the side panels are arc-shaped edges; the chain is located between the two side panels, and a row of arc-shaped pressure wheels are installed on the inner wall of the side panel, and the pressure wheels are pressed on the wing plates on both sides of the chain.

[0011] The tensioning wheel is further installed on a U-shaped frame, the bottom end of the U-shaped frame is connected to a tensioning oil cylinder, and the tensioning oil cylinder is fixed to the upper side of the arm body; support plates are fixed on both sides of the U-shaped frame, and a stop pin is fixed on the upper end of the support plate;

[0012] The bucket includes a rectangular frame fixed on the chain, with the bottom and top of the rectangular frame both open; a first rotating shaft is rotatably mounted on one side of the top of the rectangular frame, and a bottom plate is slidably mounted inside the rectangular frame; shift forks that cooperate with the stop pin are fixed at both ends of the first rotating shaft, a first torsion spring is installed between the first rotating shaft and the rectangular frame, and the first rotating shaft drives the bottom plate through a connecting rod mechanism;

[0013] When the bucket moves to the stop pin position, the shift fork is held against the stop pin and starts to rotate, thereby pulling the base plate upward along the rectangular frame; when the bucket passes over the stop pin, the shift fork separates from the stop pin, and the first torsion spring drives the first rotating shaft and the base plate to reset.

[0014] A pair of sliding rods are fixed to the inner wall of the rectangular frame, and a U-shaped guide rail slidably connected to the sliding rods is fixed to the bottom plate;

[0015] There are two connecting rod mechanisms, and the two connecting rod mechanisms are respectively opposite to the sliding rod;

[0016] The connecting rod mechanism comprises a first connecting rod fixed on the first rotating shaft, one end of the first connecting rod is hinged to the second connecting rod, and one end of the second connecting rod is hinged to the U-shaped guide rail.

[0017] A blade is provided on the side of the bottom plate near the top of the rectangular frame, and a rotating plate is provided on the side of the bottom plate near the bottom of the rectangular frame. The rotating plate and the blade are connected via a second rotating shaft passing through the bottom plate.

[0018] A tension spring is connected between both ends of the rotating plate and the bottom plate; a guide ring is fixed on the side of the bottom plate close to the bottom end of the rectangular frame, a pull rope is fixed at the bottom end of the rectangular frame, and the other end of the pull rope passes through the guide ring and is connected to one end of the rotating plate.

[0019] The mud scraper includes a U-shaped plate fixed on a chain, with a rotating support shaft rotatably mounted on both sides of the U-shaped plate; a pin knife is fixed to the upper end of the rotating support shaft, a second torsion spring is installed between the middle of the rotating support shaft and the U-shaped plate, and a crank is fixed to the lower end of the rotating support shaft; a roller is installed on the end of the crank away from the rotating support shaft;

[0020] When the mud scraper moves to the position of the arc-shaped guide frame, the roller is supported by the side plate of the arc-shaped guide frame and starts to rotate, thereby driving the pin knife to rotate inward.

[0021] Support blocks are fixed in both side walls of the U-shaped plate, the rotary support shaft is rotatably installed on the support blocks, and the two support blocks are fixedly connected by a crossbeam.

[0022] The ends of both side walls of the U-shaped plate are provided with limiting bosses, which abut against one side of the pin knife.

[0023] The beneficial effects of the present invention are:

[0024] An arc-shaped guide frame is set on the rear side of the tensioner to guide the chain, making it easier for the chain to turn and enter the box smoothly, thereby improving the stability of the chain rotation.

[0025] Under the action of the arc-shaped guide frame, the height of the tensioner can be set higher. A stop pin that cooperates with the bucket is set at the position of the tensioner. The bucket is farther away from the arm at the position of the tensioner, which is convenient for flipping and pouring the soil into the matching receiving barrel. The bottom plate of the bucket can be raised and lowered in conjunction with the stop pin. The bottom plate also has a blade that rotates during the lifting process to ensure that all the soil in the bucket is cleaned out to prevent it from solidifying in the bucket and affecting subsequent excavation.

[0026] When the mud cutter encounters an arc-shaped guide frame, the crank, roller and arc-shaped guide frame cooperate to complete the inward rotation recovery of the pin cutter. When the pin cutter rotates, some of the dirt attached to the pin cutter can also be cleaned off; after the pin cutter is recovered, the roller at the end of the crank rolls in contact with the arc-shaped guide frame, which can reduce friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a three-dimensional structural diagram of the excavation mechanism assembly of an underground continuous vertical membrane wall building machine according to the present invention from the first perspective.

[0029] Figure 2 for Figure 1 A partial enlarged view of the .

[0030] Figure 3 This is a partially enlarged view of the second viewing angle of the excavation mechanism assembly of an underground continuous vertical membrane wall building machine of the present invention.

[0031] Figure 4This is a front view of the excavation mechanism assembly of an underground continuous vertical membrane wall building machine according to the present invention.

[0032] Figure 5 for Figure 4 Magnified image in .

[0033] Figure 6 This is a three-dimensional structural diagram of the bucket in the present invention from the first perspective.

[0034] Figure 7 for Figure 6 The view behind the rectangular frame with one side panel omitted

[0035] Figure 8 This is a three-dimensional structural diagram of the bucket in the present invention from a second viewing angle.

[0036] Figure 9 This is a three-dimensional structural diagram of the mud scraper in the present invention from the first perspective.

[0037] Figure 10 This is a three-dimensional structural diagram of the mud scraper in the present invention from a second viewing angle.

[0038] Explanation of Reference Numerals: 1. arm; 2. guide wheel; 3. driving wheel; 4. tensioning wheel; 5. chain; 501. wing plate; 6. bucket; 601. rectangular frame; 602. first rotating shaft; 603. shift fork; 604. first torsion spring; 605. bottom plate; 606. slide bar; 607. U-shaped guide rail; 608. first connecting rod; 609. second connecting rod; 610. blade; 611. rotating plate; 612. second rotating shaft; 613. tension spring; 614. pull rope; 615. guide ring;

[0039] 7. Mud scraper; 701. U-shaped plate; 702. Rotary support shaft; 703. Pin knife; 704. Second torsion spring; 705. Crank; 706. Roller; 707. Support block; 708. Crossbeam; 709. Limiting boss;

[0040] 8. Square box; 9. Arc-shaped guide frame; 901. Side plate; 902. Pressure wheel; 10. U-shaped frame; 11. Tensioning cylinder; 12. Support plate; 13. Stop pin. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] Combine Figures 1 to 5As shown, an excavation mechanism assembly for an underground continuous vertical membrane wall-building machine includes an arm 1. A long, open-ended box 8 is fixed to the upper side of the arm 1. The right end of the box 8 aligns with the arm 1, and the left end of the box 8 is shorter than the arm 1. A guide wheel 2 is mounted on the right end of the arm 1, and a drive wheel 3 is mounted on the left end of the arm 1. The drive wheel 3 is connected to a reducer and a hydraulic motor. A tensioner 4 is located on the upper side of the left end of the arm 1 and is mounted on a U-shaped frame 10. The bottom end of the U-shaped frame 10 is connected to a tensioning cylinder 11, which is vertically fixed to the upper side of the arm 1. A chain 5 is mounted on the guide wheel 2, drive wheel 3, and tensioner 4, and the chain 5 rotates around the arm 1. The upper section of the chain 5 is inserted into the box 8. Wings 501 are fixed on both sides of each section of the chain 5. The arm 1 and the box 8 have limit slides for contact with the wing 501. Buckets 6 and mud scrapers 7 are fixed on the chain 5 in alternating arrangement. In this embodiment, one mud scraper 7 is arranged for every three buckets 6 .

[0043] An arc-shaped guide frame 9 is installed between the tensioner 4 and the box 8. It is fixed to the upper side of the arm 1. It has side panels 901 on either side, each with an arc-shaped upper edge. The chain 5 is positioned between the two side panels 901. A row of arc-shaped pressure rollers 902 are mounted on the inner walls of these panels, pressing against the wing panels 501 on either side of the chain 5. The arc-shaped guide frame 9 guides the chain 5, ensuring smooth entry into the box 8.

[0044] Combine Figure 5 As shown, when working, the arm 1 is basically in a vertical state, and the chain 5 rotates counterclockwise. After the bucket 6 digs out the soil, it turns over when it passes over the tensioning wheel 4, and pours the soil inside into the receiving barrel. Support plates 12 are fixed on both sides of the U-shaped frame 10, and a stop pin 13 is fixed on the upper end of the support plate 12. A fork guide wheel is installed in the stop pin 13. When the bucket 6 passes over the tensioning wheel 4, it cooperates with the fork guide wheel on the stop pin 13 to complete the dumping. The fork guide wheel can reduce friction and facilitate the smooth rotation of the fork 603 on the bucket 6.

[0045] Specific combination Figures 6 to 8 As shown, the bucket 6 includes a rectangular frame 601 fixed to the chain 5. The bottom and top of the rectangular frame 601 are open. A first rotating shaft 602 is rotatably mounted on one side of the top of the rectangular frame 601. A shift fork 603 that engages with the stop pin 13 is fixed at both ends of the first rotating shaft 602. A first torsion spring 604 is installed between the first rotating shaft 602 and the rectangular frame 601.

[0046] A base plate 605 is slidably mounted within the rectangular frame 601. Specifically, slide bars 606 are fixed to the inner walls of the rectangular frame 601 on both sides, and U-shaped guide rails 607 are fixed to both sides of the base plate 605, which are slidably connected to the slide bars 606. The base plate 605 can slide up and down in conjunction with the U-shaped guide rails 607 and the slide bars 606. The first rotating shaft 602 drives the base plate 605 via a linkage mechanism at each end. Specifically, the linkage mechanism includes a first link 608 fixed to the first rotating shaft 602. One end of the first link 608 is hingedly connected to a second link 609, which is hingedly connected to the U-shaped guide rail 607 at one end.

[0047] To prevent mud from sticking to the bottom plate 605, a blade 610 is provided on the side of the bottom plate 605 near the top of the rectangular frame 601. A rotating plate 611 is provided on the side of the bottom plate 605 near the bottom of the rectangular frame 601. The rotating plate 611 and the blade 610 are connected by a second rotating shaft 612 that passes through the bottom plate 605. A tension spring 613 is connected between each end of the rotating plate 611 and the bottom plate 605. A guide ring 615 is fixed to the side of the bottom plate 605 near the bottom of the rectangular frame 601. A pull rope 614 is fixed to the bottom of the rectangular frame 601. The other end of the pull rope 614 passes through the guide ring 615 and is connected to one end of the rotating plate 611.

[0048] Combine Figures 5 to 8 As shown, when the bucket 6 moves to the stop pin 13 position,

[0049] The shift fork 603 is pressed against the shift fork guide wheel on the stop pin 13 and begins to rotate, causing the first rotating shaft 602 to rotate accordingly, and then pulling the bottom plate 605 upward along the rectangular frame 601 through the connecting rod mechanism. When the bucket 6 passes the shift fork guide wheel on the stop pin 13, the shift fork 603 separates from the shift fork guide wheel on the stop pin 13, and the first torsion spring 604 drives the first rotating shaft 602 and the bottom plate 605 to return to their original position.

[0050] like Figure 8 As shown, when the bottom plate 605 moves upward along the rectangular frame 601, the pull rope 614 pulls the rotating plate 611 to rotate, and the rotating plate 611 drives the blade 610 to rotate through the second rotating shaft 612, thereby cutting off the soil adhered to the bottom plate 605 to prevent the soil from solidifying on the bottom plate 605.

[0051] Combine Figure 5 ,as well as Figure 9 and Figure 10As shown, the mud scraper 7 includes a U-shaped plate 701 fixed to the chain 5, and symmetrical swivel shafts 702 are rotatably mounted on both sides of the U-shaped plate 701. A pin knife 703 is fixed to the upper end of the swivel shaft 702, and a second torsion spring 704 is installed between the middle of the swivel shaft 702 and the U-shaped plate 701. The ends of the two side walls of the U-shaped plate 701 are provided with limiting bosses 709. Under the action of the second torsion spring 704, the limiting bosses 709 abut against one side of the pin knife 703. In addition, during operation, the pin knife 703 is also in a state of abutting against the limiting bosses 709, and excavation is performed by the pin knife 703. Support blocks 707 are fixed to the inside of the two side walls of the U-shaped plate 701, and the swivel shaft 702 is rotatably mounted on the support blocks 707. The two support blocks 707 are fixedly connected by a crossbar 708 to improve the overall strength and prevent the rotation support shaft 702 from being deformed due to excessive force when the pin knife 703 is subjected to force. A crank 705 is fixed to the lower end of the rotation support shaft 702, and a roller 706 is installed on the end of the crank 705 away from the rotation support shaft 702. Figure 5 When the mud scraper 7 moves to the position of the arc-shaped guide frame 9, the roller 706 and the crank 705 are pressed by the side plate 901 of the arc-shaped guide frame 9 and start to rotate, thereby driving the pin knife 703 to rotate inward.

[0052] Main combination Figure 2 、 Figure 3 and Figure 5 As shown, the working principle:

[0053] The excavating assembly is mounted on the wall-building machine, keeping the arm 1 in a substantially vertical state (i.e. Figure 5 (The state after rotating 90° clockwise) and moving slowly;

[0054] During operation, the hydraulic motor drives the reducer, the reducer drives the driving wheel 3, the driving wheel 3 drives the chain 5, and the chain 5 circulates on the driving wheel 3, the tensioning wheel 4, and the guide wheel 2;

[0055] During the operation of the chain 5, the bucket 6 and the mud scraper 7 are driven to work. As the arm 1 moves slowly, the bucket 6 and the mud scraper 7 dig a deep groove on the ground.

[0056] After the bucket 6 has dug out the soil, it rotates upward until it is about to pass over the tensioner 4. The shift fork 603 is resisted by the stop pin 13 and begins to rotate. The first rotating shaft 602 rotates accordingly, and then the bottom plate 605 is pulled upward along the rectangular frame 601 through the connecting rod mechanism to push out the soil in the bucket 6 (pour the soil into the matching receiving barrel); when the bucket 6 passes over the stop pin 13, the shift fork 603 separates from the stop pin 13, and the first torsion spring 604 drives the first rotating shaft 602 and the bottom plate 605 to return to their original position; as the bottom plate 605 moves upward along the rectangular frame 601, the blade 610 rotates to cut off the soil adhered to the bottom plate 605;

[0057] When the mud scraper 7 moves to the position of the arc-shaped guide frame 9, the roller 706 and the crank 705 are supported by the side plate 901 of the arc-shaped guide frame 9 and start to rotate, thereby driving the pin knife 703 to rotate inward, cleaning off some of the mud attached to the pin knife and preventing the mud from entering the square box 8; the roller 706 at the end of the crank 705 can reduce friction and avoid friction loss of the crank 705.

[0058] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An underground continuous vertical membrane wall building machine excavation mechanism assembly, Its characteristics are: It comprises an arm body (1) and a chain (5) arranged around the arm body (1); A guide wheel (2) is mounted on one end of the arm body (1), and a drive wheel (3) and a tension wheel (4) are mounted on the other end of the arm body (1), and the tension wheel (4) is located on the upper side of the arm body (1); a chain (5) is mounted on the guide wheel (2), the drive wheel (3) and the tension wheel (4), and the chain (5) is connected to buckets (6) and mud scrapers (7) arranged alternately, and wing plates (501) are fixed on both sides of each section of the chain (5); A long square box (8) with two open ends is fixed on the upper side of the arm (1), and the upper layer of the chain (5) is passed through the square box (8); An arc-shaped guide frame (9) is provided between the tensioning wheel (4) and the box (8); the arc-shaped guide frame (9) is fixed to the upper side of the arm body (1), and the arc-shaped guide frame (9) has side plates (901) on both sides, and the upper side edges of the side plates (901) are arc-shaped edges; the chain (5) is located between the two side plates (901), and a row of arc-shaped pressure wheels (902) are installed on the inner wall of the side plate (901), and the pressure wheels (902) press on the wing plates (501) on both sides of the chain (5); The tensioning wheel (4) is mounted on a U-shaped frame (10), the bottom end of the U-shaped frame (10) is connected to a tensioning oil cylinder (11), and the tensioning oil cylinder (11) is fixed to the upper side of the arm body (1); support plates (12) are fixed on both sides of the U-shaped frame (10), and a stop pin (13) is fixed on the upper end of the support plate (12); The bucket (6) includes a rectangular frame (601) fixed on the chain (5), and the bottom and top of the rectangular frame (601) are open; a first rotating shaft (602) is rotatably installed on one side of the top of the rectangular frame (601), and a bottom plate (605) is slidably installed in the rectangular frame (601); a shift fork (603) that cooperates with the stop pin (13) is fixed at both ends of the first rotating shaft (602), a first torsion spring (604) is installed between the first rotating shaft (602) and the rectangular frame (601), and the first rotating shaft (602) drives the bottom plate (605) through a connecting rod mechanism.

2. The excavation mechanism assembly of an underground continuous vertical membrane wall-building machine according to claim 1, characterized in that: A pair of slide bars (606) are fixed to the inner wall of the rectangular frame (601), and a U-shaped guide rail (607) slidably connected to the slide bars (606) is fixed to the bottom plate (605); There are two connecting rod mechanisms, and the two connecting rod mechanisms are respectively opposite to the sliding rod (606); The connecting rod mechanism comprises a first connecting rod (608) fixed on the first rotating shaft (602), one end of the first connecting rod (608) is hinged to a second connecting rod (609), and one end of the second connecting rod (609) is hinged to the U-shaped guide rail (607).

3. The excavation mechanism assembly of an underground continuous vertical membrane wall-building machine according to claim 1, characterized in that: A blade (610) is provided on the side of the bottom plate (605) close to the top of the rectangular frame (601), and a rotating plate (611) is provided on the side of the bottom plate (605) close to the bottom of the rectangular frame (601). The rotating plate (611) and the blade (610) are connected via a second rotating shaft (612) passing through the bottom plate (605). A tension spring (613) is connected between both ends of the rotating plate (611) and the bottom plate (605); a guide ring (615) is fixed to the side of the bottom plate (605) near the bottom end of the rectangular frame (601), and a pull rope (614) is fixed to the bottom end of the rectangular frame (601), and the other end of the pull rope (614) passes through the guide ring (615) and is connected to one end of the rotating plate (611).

4. The excavation mechanism assembly of an underground continuous vertical membrane wall-building machine according to claim 1, characterized in that: The mud scraper (7) comprises a U-shaped plate (701) fixed on the chain (5), and a rotating support shaft (702) is rotatably mounted on both sides of the U-shaped plate (701); a pin knife (703) is fixed to the upper end of the rotating support shaft (702), a second torsion spring (704) is installed between the middle of the rotating support shaft (702) and the U-shaped plate (701), and a crank (705) is fixed to the lower end of the rotating support shaft (702); and a roller (706) is installed at the end of the crank (705) away from the rotating support shaft (702).

5. The excavation mechanism assembly of an underground continuous vertical membrane wall-building machine according to claim 4, characterized in that: Support blocks (707) are fixed in both side walls of the U-shaped plate (701), the rotary support shaft (702) is rotatably mounted on the support blocks (707), and the two support blocks (707) are fixedly connected via a crossbeam (708).

6. The excavation mechanism assembly of an underground continuous vertical membrane wall-building machine according to claim 4, characterized in that: The ends of both side walls of the U-shaped plate (701) are provided with limiting bosses (709), and the limiting bosses (709) abut against one side of the pin knife (703).

Images