A slag collecting device for a caisson shaft boring machine and its implementation method

Abstract

The present invention discloses a slag collecting device for a caisson shaft boring machine and an implementation method thereof, comprising an outer sliding box connected below the rotary platform of the caisson shaft boring machine, an inner sliding box slidingly arranged inside the outer sliding box, a driving oil cylinder for driving the inner sliding box to extend and retract is arranged between the inner sliding box and the outer sliding box, a slag retaining plate is rotatably arranged at the bottom end of the inner sliding box, the slag retaining plate can perform circular motion and radial motion with the outer sliding box, and can also rotate relative to the inner sliding box, two stop blocks are arranged at intervals at the bottom end of the inner sliding box, a limit block located between the two upper stop blocks is arranged at the top end of the slag retaining plate, to ensure that the slag retaining plate can only rotate within a specific angle range relative to the inner sliding box, to ensure that the slag retaining plate can gather slag toward the center of the shaft when rotating circumferentially and moving radially regardless of whether the rotary platform rotates forward or reversely. Compared with the existing shaft slag discharging equipment and method, the present invention has a simple structure, convenient control, high construction efficiency and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of slag collection in shaft excavation, and in particular to a slag collection device for a caisson shaft boring machine and an implementation method thereof. Background Art

[0002] With the rapid development of underground space development and construction, caissons are being used more and more widely. The application of caisson shaft boring machines has improved the efficiency of shaft construction. However, due to the particularity of caisson construction: small space, vertical construction, and relatively scattered slag, the discharge of slag during excavation has become an important factor hindering construction efficiency.

[0003] At present, there are three methods for caisson slag removal: mud slag removal, vacuum slag removal, manual slag removal, and mechanical grab bucket slag removal. However, these slag removal methods have limitations. Mud slag removal requires mud separation equipment, and the well needs to be filled with mud, which is costly and has high requirements for waterproof sealing of the equipment, making equipment maintenance difficult. Vacuum slag removal requires pretreatment of the slag soil, and the vacuum equipment is expensive. Manual slag removal is not only inefficient, but also labor-intensive.

[0004] The caisson shaft boring machine with mechanical grab bucket for slag removal includes rock drilling, rock loading, lifting, gangue removal, suspension, drainage, ventilation equipment, as well as structures such as the drilling derrick and the rotary working table. Rock drilling is mainly carried out by the cutting head set under the rotary platform, and rock loading is carried out by the mechanical grab bucket. The mechanical grab bucket can quickly discharge slag, with high construction efficiency and low cost, but it is very difficult to gather the slag to a position where the mechanical grab bucket can easily grab it. Summary of the invention

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a slag collecting device for a caisson shaft boring machine and an implementation method thereof, which solves the problem that the mechanical grab bucket slag discharging method of the existing caisson shaft boring machine is difficult to gather the slag to a position convenient for grabbing.

[0006] The technical solution of the present invention is implemented as follows: a slag collecting device for a caisson shaft boring machine comprises an outer sliding box connected below the rotating platform of the caisson shaft boring machine. Driven by the rotating platform, the outer sliding box can make circular motion; driven by the radial oil cylinder of the caisson shaft boring machine, the outer sliding box can approach and move away from the center of the shaft. An inner sliding box is slidingly arranged inside the outer sliding box, and a driving oil cylinder for driving the inner sliding box to extend and retract is arranged between the inner sliding box and the outer sliding box, and the driving oil cylinder can drive the inner sliding box to extend and retract along the outer sliding box. A slag retaining plate is rotatably arranged at the bottom end of the inner sliding box, and the slag retaining plate can make circular motion and radial motion with the outer sliding box, and can also rotate relative to the inner sliding box. Two stop blocks are arranged at intervals at the bottom end of the inner sliding box, and a limit block is arranged at the top end of the slag baffle plate, which is located between the two upper stop blocks, to ensure that the slag baffle plate can only rotate within a specific angle range relative to the inner sliding box, and to ensure that no matter whether the rotary platform rotates forward or reversely, the slag baffle plate can gather the slag to the center of the shaft during circumferential rotation and radial movement.

[0007] A fixed shaft is arranged at the bottom end of the inner sliding box, and the slag blocking plate is rotatably arranged on the fixed shaft, providing a slag collecting method in which the fixed shaft is relatively fixed to the inner sliding box and the slag blocking plate is rotatable relative to the fixed shaft.

[0008] Alternatively, a rotating shaft is provided at the bottom end of the inner sliding box, and the slag blocking plate is fixedly arranged on the rotating shaft, providing a slag collecting method in which the rotating shaft rotates relative to the inner sliding box and the rotating shaft and the slag blocking plate are relatively fixed.

[0009] Furthermore, the cross section of the slag retaining plate is drop-shaped, and the slag retaining plate includes two symmetrical arc-shaped side plates, which can ensure that when the slag is gathered, the slag will move toward the center of the shaft along the arc direction. The upper and lower ports of the arc-shaped side plates are both provided with sealing plates, and the large end of the sealing plate is rotatably connected to the inner sliding box, and the sealing plate can prevent the slag from entering the gap between the two arc-shaped side plates.

[0010] Furthermore, a plug plate is provided below the sealing plate at the lower port to ensure that the debris is fully gathered.

[0011] Furthermore, a slide rail that cooperates with each other is arranged between the inner wall of the outer sliding box and the outer wall of the inner sliding box, which can reliably guide the relative sliding. The inner wall of the outer sliding box is provided with an outer wear-resistant strip, and the outer wall of the inner sliding box is provided with an inner wear-resistant strip that slides with the outer wear-resistant strip, which can effectively reduce the sliding friction and prolong the service life.

[0012] Furthermore, an upper hinge seat of the oil cylinder is provided at the top of the inner part of the outer sliding box, and a lower hinge seat of the oil cylinder is provided at the bottom of the inner sliding box. The upper hinge point of the driving oil cylinder is connected to the upper hinge seat of the oil cylinder, and the lower hinge point is connected to the lower hinge seat of the oil cylinder. This mutually nested driving method can not only simplify the structure, but also reduce the space required for installation. The hinge structure at the upper and lower ends of the driving oil cylinder can provide a certain amount of activity margin to prevent the driving oil cylinder from being subjected to shear force when extending and retracting.

[0013] A method for implementing a slag collecting device for a caisson shaft boring machine comprises the following steps:

[0014] Step 1: The caisson shaft boring machine stops digging;

[0015] Step 2: Drive the oil cylinder to push the slag baffle plate downward;

[0016] Step 3: The rotary platform drives the slag baffle plate to rotate and collect slag;

[0017] Step 4: The mechanical grab of the caisson shaft boring machine grabs and transports the debris out.

[0018] The step one is: controlling the cutting head of the caisson shaft boring machine to stop excavating, and the radial cylinder of the caisson shaft boring machine drives the cutting head to move to the outermost circle working state to prevent the cutting head from affecting the slag retaining plate to gather the slag toward the center of the shaft; the step four is controlling the radial cylinder of the caisson shaft boring machine to drive the outer sliding box to move to the outermost circle before the mechanical grab grabs the slag to prevent the slag retaining plate from affecting the mechanical grab grabbing the slag.

[0019] The second step is: pressurizing the driving oil cylinder to slide the inner sliding box along the outer sliding box, and the slag retaining plate is gradually pushed out by the inner sliding box until the slag retaining plate contacts the slag and the plug plate is inserted into the slag, and the extension stroke of the driving oil cylinder ends.

[0020] The step three is: control the rotating platform to drive the outer sliding box to make circular motion, the slag plate pushes up the slag while the inner sliding box rotates, and the arc-shaped side plate of the slag plate pushes the slag toward the center of the shaft. Under the action of the slag plate, the slag gradually accumulates and the resistance borne by the slag plate increases. Since the side of the slag plate is an arc-shaped side plate and a cantilever structure, the slag is subjected to a large thrust at the big head end of the slag plate, and a small thrust at the tail end. Under the reaction force, the slag forces the slag plate to swing around the inner sliding box at an angle. Under the relative top pressure of the stop block at the bottom of the inner sliding box and the limit block at the upper end of the slag plate, the slag plate swings to a fixed angle and makes circular motion with the rotating platform, and the slag in the shaft is gradually gathered to the center of the shaft.

[0021] Furthermore, a diameter reduction operation is performed between step three and step four, the radial cylinder of the caisson shaft boring machine drives the outer sliding box to move toward the center of the shaft, and then step three is repeated until all the debris is pushed to the center of the shaft.

[0022] Furthermore, while implementing the step 3, the radial cylinder of the caisson shaft boring machine drives the outer sliding box to move toward the center of the shaft, and controls the inner sliding box below the outer sliding box to drive the slag retaining plate to make a spiral motion gradually approaching the center of the shaft. The spiral motion of the slag retaining plate gradually approaching the center of the shaft can further improve the reliability of gathering the slag.

[0023] The present invention can conveniently and reliably gather the slag in the shaft so that the mechanical grab can efficiently and conveniently grab the slag in the shaft, without the need for pre-treatment of the slag, and without the need for mud separation, vacuum slag removal and other equipment in traditional construction. Compared with the existing shaft slag removal equipment and method, the present invention has a simple structure, convenient control, high construction efficiency and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the installation position of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the present invention;

[0027] Figure 3 for Figure 2 Right view of;

[0028] Figure 4 for Figure 3 Top view of the middle slag plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] Embodiment 1, a slag collecting device for a caisson shaft boring machine, such as Figure 1 As shown, it includes an outer sliding box 5 connected to the lower part of the rotary platform 1 of the caisson shaft boring machine 2. Driven by the rotary platform 1, the outer sliding box 5 can make a circular motion. Driven by the radial cylinder of the caisson shaft boring machine 2, the outer sliding box 5 can move closer to and away from the center of the shaft.

[0031] like Figure 2 As shown, an inner sliding box 6 is slidably arranged inside the outer sliding box 5, and a driving oil cylinder 4 for driving the inner sliding box 6 to extend and retract is arranged between the inner sliding box 6 and the outer sliding box 5, and the driving oil cylinder 4 can drive the inner sliding box 6 to extend and retract along the outer sliding box 6. A slag blocking plate 7 is rotatably arranged at the bottom end of the inner sliding box 6, and the slag blocking plate 7 can perform circular motion and radial motion with the outer sliding box 5, and can also rotate relative to the inner sliding box 6.

[0032] like Figure 3 and Figure 4 As shown, two stop blocks 3 are arranged at intervals at the bottom end of the inner slide box 6, and a limit block 9 located between the two upper stop blocks 3 is arranged at the top end of the slag baffle plate 7, to ensure that the slag baffle plate 7 can only rotate within a specific angle range relative to the inner slide box 6, to ensure that no matter the rotary platform 1 rotates forward or reversely, the slag baffle plate 7 can gather the slag to the center of the shaft during circumferential rotation and radial movement.

[0033] Further, a fixed shaft is provided at the bottom end of the inner slide box 6, and the slag blocking plate 7 is rotatably provided on the fixed shaft, providing a slag collection method in which the fixed shaft is relatively fixed to the inner slide box 6 and the slag blocking plate 7 rotates relative to the fixed shaft. Alternatively, a rotating shaft is provided at the bottom end of the inner slide box 6, and the slag blocking plate 7 is fixedly provided on the rotating shaft, providing a slag collection method in which the rotating shaft rotates relative to the inner slide box 6 and the rotating shaft and the slag blocking plate 7 are relatively fixed.

[0034] Embodiment 2, a slag collecting device for a caisson shaft boring machine, such as Figure 4 As shown, the cross-section of the slag retaining plate 7 is drop-shaped, and the slag retaining plate 7 includes two left-right symmetrical arc-shaped side plates 8, which are connected to form a drop-shaped shape with one end large and the other end small. The arc-shaped side plates 8 can ensure that when the slag is gathered, the slag will move toward the center of the shaft along the arc direction.

[0035] Under the action of the slag blocking plate 7, the slag gradually accumulates and the resistance borne by the slag blocking plate 7 increases. Since the side surfaces of the slag blocking plate 7 are arc-shaped side plates 8 and are cantilever structures, the large head end of the slag blocking plate 7 is subject to large resistance and the tail end is subject to small resistance. The slag blocking plate 7 swings around the inner slide box 6 at an angle. Under the relative top pressure of the stop block 3 at the bottom of the inner slide box and the limit block 9 at the upper end of the slag blocking plate 7, the slag blocking plate 7 swings to a fixed angle and moves in a circle with the rotating platform 1, and the slag in the shaft is gradually gathered to the center of the shaft.

[0036] Furthermore, the upper and lower ports of the arc-shaped side plates 8 are both provided with sealing plates 10 , and the large end of the sealing plate 10 is rotatably connected to the inner slide box 6 , and the sealing plate 10 can prevent debris from entering the gap between the two arc-shaped side plates 8 .

[0037] The other structures of this embodiment are the same as those of Embodiment 1.

[0038] Embodiment 3, a slag collecting device for a caisson shaft boring machine, such as Figure 2 and Figure 3 As shown, a plug plate 13 is provided below the sealing plate 10 at the lower port, which can ensure that the debris is fully gathered.

[0039] The other structures of this embodiment are the same as those of Embodiment 1 or 2.

[0040] Embodiment 4, a slag collecting device for a caisson shaft boring machine, wherein a slide rail that cooperates with each other is arranged between the inner wall of the outer slide box 5 and the outer wall of the inner slide box 6, which can reliably guide the relative sliding. The inner wall of the outer slide box 5 is provided with an outer wear-resistant strip, and the outer wall of the inner slide box 6 is provided with an inner wear-resistant strip that slides with the outer wear-resistant strip, which can effectively reduce the sliding friction and prolong the service life.

[0041] The other structures of this embodiment are the same as those of Embodiment 1, 2 or 3.

[0042] Embodiment 5, a slag collecting device for a caisson shaft boring machine, wherein the top of the outer sliding box 5 is provided with an upper hinge seat 11 of the oil cylinder, the bottom of the inner sliding box 6 is provided with a lower hinge seat 12 of the oil cylinder, the upper hinge point of the driving cylinder 4 is connected to the upper hinge seat 11 of the oil cylinder, and the lower hinge point is connected to the lower hinge seat 12 of the oil cylinder. This mutually nested driving method can simplify the structure and reduce the space required for installation. The hinge structure at the upper and lower ends of the driving cylinder 4 can provide a certain amount of margin to prevent the driving cylinder 4 from being subjected to shear force when extending and retracting.

[0043] The other structures of this embodiment are the same as those of Embodiment 1, 2, 3 or 4.

[0044] Embodiment 6, a method for implementing a slag collecting device for a caisson shaft boring machine, comprising the following steps:

[0045] Step 1: The caisson shaft boring machine 2 stops digging;

[0046] Step 2: Drive the oil cylinder 4 to push the slag baffle plate 7 downward;

[0047] Step 3: The rotary platform 1 drives the slag baffle plate 7 to rotate and collect slag;

[0048] Step 4: The mechanical grab of the caisson shaft boring machine 2 grabs and transports the debris out.

[0049] The step one is: controlling the cutting head of the caisson shaft boring machine 2 to stop excavating, and the radial cylinder of the caisson shaft boring machine 2 drives the cutting head to move to the outermost circle working state to prevent the cutting head from affecting the slag retaining plate 7 to gather the slag toward the center of the shaft; before the mechanical grab bucket grabs the slag in the step four, controlling the radial cylinder of the caisson shaft boring machine 2 to drive the outer sliding box 5 to move to the outermost circle to prevent the slag retaining plate 7 from affecting the mechanical grab bucket to grab the slag.

[0050] The structure of this embodiment is the same as that of Embodiment 5.

[0051] Embodiment 7, a method for implementing a slag collecting device for a caisson shaft boring machine, the step 2 being: pressurizing the driving cylinder 4 to slide the inner sliding box 6 along the outer sliding box 5, the slag retaining plate 7 is gradually pushed out by the inner sliding box 6 until the slag retaining plate 7 contacts the slag and the insert plate 13 is inserted into the slag, and the extension stroke of the driving cylinder ends.

[0052] The structure of this embodiment is the same as that of embodiment 5;

[0053] The other steps of this embodiment are the same as those of Embodiment 6.

[0054] Embodiment 8, a method for implementing a slag collecting device for a caisson shaft boring machine, wherein step three is: controlling the rotating platform 1 to drive the outer sliding box 5 to make a circular motion, the slag retaining plate 7 pushes up the slag soil as the inner sliding box 6 rotates, and the arc-shaped side plate 8 of the slag retaining plate 7 pushes the slag soil toward the center of the shaft. Under the action of the slag retaining plate 7, the slag soil gradually accumulates and the resistance borne by the slag retaining plate 7 increases. Since the side of the slag retaining plate 7 is an arc-shaped side plate 8 and is a cantilever structure, the slag soil is subjected to a large thrust at the large end of the slag retaining plate 7 and a small thrust at the tail end. Under the reaction force, the slag soil forces the slag retaining plate 7 to swing around the inner sliding box 6 at an angle. Under the relative top pressure of the stop block 3 at the bottom of the inner sliding box and the limit block 9 at the upper end of the slag retaining plate 7, the slag retaining plate 7 swings to a fixed angle and makes a circular motion with the rotating platform 1, and the slag soil in the shaft is gradually gathered to the center of the shaft.

[0055] The structure of this embodiment is the same as that of embodiment 5;

[0056] The other steps of this embodiment are the same as those of Embodiment 6 or 7.

[0057] Embodiment 9, a method for implementing a slag collecting device for a caisson shaft boring machine, performing a diameter reduction operation between step three and step four, the radial cylinder of the caisson shaft boring machine 2 drives the outer sliding box 5 to move toward the center of the shaft, and then repeating step three until all the slag is pushed to the center of the shaft.

[0058] The structure of this embodiment is the same as that of embodiment 5;

[0059] The other steps of this embodiment are the same as those of Embodiment 6, 7 or 8.

[0060] Embodiment 10, a method for implementing a slag collecting device for a caisson shaft boring machine, while implementing the step 3, the radial cylinder of the caisson shaft boring machine 2 drives the outer sliding box 5 to move toward the center of the shaft, and controls the inner sliding box 6 below the outer sliding box 5 to drive the slag retaining plate 7 to make a spiral motion gradually approaching the center of the shaft. The spiral motion of the slag retaining plate 7 gradually approaching the center of the shaft can further improve the reliability of gathering slag.

[0061] The structure of this embodiment is the same as that of embodiment 5;

[0062] The other steps of this embodiment are the same as those of Embodiment 6, 7 or 8.

[0063] The details not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A slag collecting device for a caisson shaft boring machine, characterized in that: It comprises an outer sliding box (5) connected to the lower part of the rotary platform (1) of the caisson shaft boring machine (2); driven by the rotary platform (1), the outer sliding box (5) can make circular motion; driven by the radial oil cylinder of the caisson shaft boring machine (2), the outer sliding box (5) can approach and move away from the center of the shaft; An inner sliding box (6) is slidably arranged inside the outer sliding box (5), a driving oil cylinder (4) for driving the inner sliding box (6) to extend and retract is arranged between the inner sliding box (6) and the outer sliding box (5), a slag blocking plate (7) is rotatably arranged at the bottom end of the inner sliding box (6), two stop blocks (3) are arranged at intervals at the bottom end of the inner sliding box (6), and a limit block (9) located between the two upper stop blocks (3) is arranged at the top end of the slag blocking plate (7); The cross section of the slag retaining plate (7) is in the shape of a water drop. The slag retaining plate (7) comprises two left-right symmetrical arc-shaped side plates (8). The upper and lower ends of the arc-shaped side plates (8) are both provided with sealing plates (10). The large end of the sealing plate (10) is rotatably connected to the inner slide box (6). The two arc-shaped side plates (8) are connected to form a water drop shape with one end being large and the other end being small. The arc-shaped side plates (8) can ensure that when the slag is gathered, the slag will move toward the center of the shaft along the arc direction.

2. The slag collecting device for a caisson shaft boring machine according to claim 1, characterized in that: A fixed shaft is provided at the bottom end of the inner sliding box (6), and the slag blocking plate (7) is rotatably arranged on the fixed shaft.

3. The slag collecting device for a caisson shaft boring machine according to claim 1, characterized in that: A rotating shaft is provided at the bottom end of the inner sliding box (6), and the slag blocking plate (7) is fixedly arranged on the rotating shaft.

4. The slag collecting device for a caisson shaft boring machine according to claim 1, characterized in that: An inserting plate (13) is provided below the sealing plate (10) at the lower port.

5. The slag collecting device for a caisson shaft boring machine according to claim 4, characterized in that: A slide rail that cooperates with each other is arranged between the inner wall of the outer slide box (5) and the outer wall of the inner slide box (6); the inner wall of the outer slide box (5) is provided with an outer wear-resistant strip, and the outer wall of the inner slide box (6) is provided with an inner wear-resistant strip that slidably cooperates with the outer wear-resistant strip.

6. The slag collecting device for a caisson shaft boring machine according to claim 5, characterized in that: An upper cylinder hinge seat (11) is provided at the top end of the outer sliding box (5), and a lower cylinder hinge seat (12) is provided at the bottom end of the inner sliding box (6). The upper hinge point of the driving cylinder (4) is connected to the upper cylinder hinge seat (11), and the lower hinge point is connected to the lower cylinder hinge seat (12).

7. The implementation method of the slag collecting device for a caisson shaft boring machine according to claim 6, characterized in that The following steps are involved: Step 1: The caisson shaft boring machine (2) stops digging; Step 2: driving the oil cylinder (4) to push the slag baffle plate (7) downward; Step 3: The rotary platform (1) drives the slag baffle plate (7) to rotate and collect slag; Step 4: The mechanical grab of the caisson shaft boring machine (2) grabs and transports the debris out.

8. The implementation method of the slag collecting device for a caisson shaft boring machine according to claim 7, characterized in that The first step is to control the cutting head of the caisson shaft boring machine (2) to stop excavating, and the radial oil cylinder of the caisson shaft boring machine (2) drives the cutting head to move to the outermost circle working state; the fourth step is to control the radial oil cylinder of the caisson shaft boring machine (2) to drive the outer sliding box (5) to move to the outermost circle before the mechanical grab bucket grabs and transports the slag.

9. The implementation method of the slag collecting device for a caisson shaft boring machine according to claim 7 or 8, characterized in that The second step is: pressurizing the driving oil cylinder (4) to slide the inner sliding box (6) along the outer sliding box (5), and the slag retaining plate (7) is gradually pushed out by the inner sliding box (6) until the slag retaining plate (7) contacts the slag and the inserting plate (13) is inserted into the slag.

10. The implementation method of the slag collecting device for a caisson shaft boring machine according to claim 9, characterized in that The step three is: controlling the rotary platform (1) to drive the outer sliding box (5) to make a circular motion, the slag retaining plate (7) pushes up the slag while the inner sliding box (6) rotates, and the arc-shaped side plate (8) of the slag retaining plate (7) pushes the slag toward the center of the shaft.

11. The implementation method of the slag collecting device for a caisson shaft boring machine according to claim 10, characterized in that: A diameter reduction operation is performed between step three and step four, the radial oil cylinder of the caisson shaft boring machine (2) drives the outer sliding box (5) to move toward the center of the shaft, and then step three is repeated until all the debris is pushed to the center of the shaft.

12. The implementation method of the slag collecting device for a caisson shaft boring machine according to claim 9, characterized in that: While implementing the step three, the radial oil cylinder of the caisson shaft boring machine (2) drives the outer sliding box (5) to move toward the center of the shaft, and controls the inner sliding box (6) below the outer sliding box (5) to drive the slag retaining plate (7) to make a spiral movement gradually approaching the center of the shaft.

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