Multifunctional cutting arm of vertical shaft heading machine

Abstract

The multifunctional cutting arm comprises a base, a main arm, a main arm oil cylinder, an auxiliary arm and an auxiliary arm oil cylinder, the heading machine is coaxially supported in a vertical shaft, the base is fixedly connected to the rotation power output end of the heading machine, the middle of the first end of the main arm is hinged to the base, the first end of the main arm oil cylinder is hinged to the side wall of the base, and the second end of the main arm oil cylinder is hinged to the side wall of the base. The second end of the main arm oil cylinder is hinged to the side wall of the second end of the main arm; the first end of the auxiliary arm oil cylinder is hinged to the middle of the first end of the main arm, one side of the auxiliary arm is hinged to the second end of the main arm, and the other side of the auxiliary arm is hinged to the second end of the auxiliary arm oil cylinder. According to the invention, the structures of the main arm and the auxiliary arm are optimally designed, so that when the main arm and the auxiliary arm retract, the rock breaking roller can be driven to directly ascend to the position of the maintenance platform, a maintainer can directly maintain the rock breaking roller on the maintenance platform, the safety is improved, the maintenance efficiency is improved, and the project progress is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of shaft boring, in particular to a multifunctional cutting arm of a shaft boring machine. Background Art

[0002] The shaft boring machine is the main equipment for mechanized shaft excavation. Under the condition of stable support, the machine body uses the extended main shaft to provide powerful rotational power to drive the cutter head or cutting arm to break the rock. Since most shaft boring machines are full-section rock breaking machines, the full-section rock breaking and cutting parts are large in size and weight, which brings problems such as high cost, difficulty in lifting and maintenance.

[0003] By adopting a partial-section cutting arm that can swing freely within a certain range, the cutter can be driven to swing synchronously to carry out partial-section rock breaking and excavation. Compared with full-section rock breaking equipment, the overall weight can be reduced and the difficulty of lifting can be reduced. However, due to the decrease in the overall number of cutters, the working time of a single cutter increases. In the process of continuous swinging of the cutter for rock breaking, the force borne by the cutter becomes more complex and changeable, the maintenance cycle of the cutter becomes shorter, and the cutter needs to be inspected, maintained and replaced more frequently. However, due to the limitations of the partial-section cutting arm structure in the prior art, when inspecting the cutter at the end of the partial-section cutting arm, it is necessary to manually go down to the bottom of the well, which is dangerous. When there is a guide well at the bottom of the shaft and it is difficult for humans to go down to the bottom of the well, the entire partial-section cutting arm needs to be hoisted out of the shaft, which will consume a lot of time and affect the excavation efficiency. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a multifunctional cutting arm of a shaft boring machine which is easy to maintain, highly safe and capable of improving the excavation efficiency.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a multifunctional cutting arm of a shaft boring machine, comprising a base, a main arm, a main arm cylinder, a secondary arm and a secondary arm cylinder, the boring machine is coaxially supported in the shaft, the base is fixedly connected to the rotary power output end of the boring machine, the middle part of the first end of the main arm is hinged to the base, the first end of the main arm cylinder is hinged to the side wall of the base, and the second end of the main arm cylinder is hinged to the side wall of the second end of the main arm; the first end of the secondary arm cylinder is hinged to the middle of the first end of the main arm, and one side of the secondary arm is hinged to the first end of the main arm On the two ends, the other side of the auxiliary arm is hinged with the second end of the auxiliary arm cylinder; a rock breaking drum is installed on the end of the auxiliary arm, and a maintenance platform is installed on the end of the tunneling machine; when the main arm cylinder and the auxiliary arm cylinder are synchronously contracted to the upper limit position: the main arm swings upward along the base to the limit position, and at the same time, the auxiliary arm swings upward to drive the rock breaking drum to a height higher than the maintenance platform for maintenance; when the main arm cylinder and the auxiliary arm cylinder are synchronously extended to the lower limit position: the main arm swings downward along the base to the lower limit position, and at the same time, the auxiliary arm swings downward to drive the rock breaking drum to enter the wellhead of the guide well to block the guide well.

[0006] The multifunctional cutting arm of the shaft boring machine described above, the base comprises a main connecting seat and a first main articulated seat, the end of the main connecting seat is articulated with the main arm through a pin shaft, the end of the main connecting seat extends along the axis of the shaft and deflects in the direction away from the rock breaking drum, the first main articulated seat is fixedly connected to the side wall of the main connecting seat, the first end of the main arm cylinder is articulated in the first main articulated seat; a connecting plate is fixedly connected to the top of the main connecting seat, and the connecting plate is connected to the rotary power output end of the boring machine. Since the shaft diameter of the shaft has certain limitations, that is, the maximum rotation radius of the multifunctional cutting arm is limited, by setting the main connecting seat inclined in the direction away from the rock breaking drum, while ensuring that the maximum rotation radius of the multifunctional cutting arm matches the shaft diameter, the axial extension distance of the multifunctional cutting arm can be maximized, which is equivalent to indirectly increasing the effective length of the main arm, thereby increasing the maximum rock breaking excavation range of the boring machine in a single step, reducing the number of steps of the boring machine, and improving the excavation efficiency.

[0007] In the above-mentioned multifunctional cutting arm of a shaft boring machine, the hinge point of the main connecting seat and the hinge point of the first main hinge seat are respectively located on both sides of the shaft axis, and the distance between the hinge point of the first main hinge seat and the shaft axis is smaller than the distance between the hinge point of the main connecting seat and the shaft axis.

[0008] The above-mentioned multifunctional cutting arm of a shaft boring machine, the main arm includes a main supporting box and side rib plates, the side rib plates parallel to each other are fixedly connected on both sides of the main supporting box, a second pin hole is opened on the first end of the main supporting box, and a second main hinge seat is fixedly connected on the side wall of the second end of the main supporting box, and the first pin hole and the third pin hole are opened on the side rib plate; a clearance groove is opened on the surface of the main supporting box, the auxiliary arm cylinder is located between the two side rib plates, and the first end of the auxiliary arm cylinder passes through the clearance groove and enters the main supporting box and is hinged to the second pin hole through a pin shaft, and the second end of the main arm cylinder is hinged in the second main hinge seat; the end of the main connecting seat extends between the two side rib plates and is hinged to the first pin hole through a pin shaft; one side of the auxiliary arm extends between the two side rib plates and is hinged to the third pin hole through a pin shaft. Through the optimization design of the main arm structure and the position of each hinge point, the main arm cylinder and the auxiliary arm cylinder are cross-arranged within the space range. Without reducing the cylinder stroke cavity, the movement range of the main arm and the auxiliary arm is guaranteed, and the overall structure is tilted to the non-excavation side. The shaft space on the non-excavation side is utilized, so that the main arm and the auxiliary arm have a larger movement space on the excavation side, so that the rock breaking drum can move to the maintenance platform position. The excavation side refers to the shaft space on one side where the rock breaking drum is installed, and the other side is the non-excavation side. This layout not only avoids mutual interference during the movement process, but also makes the overall structure compact due to the utilization of the non-excavation space, which is conducive to transportation and movement in an engineering environment such as a shaft with limited space.

[0009] In the above-mentioned multifunctional cutting arm of a shaft boring machine, the side rib plate is shaped as an isosceles trapezoid, the first pin hole is arranged close to the waist on the first end of the side rib plate, and the third pin hole is arranged close to the waist on the second end of the side rib plate.

[0010] In the above-mentioned multifunctional cutting arm of a shaft boring machine, the distance between the first pin hole and the surface of the main support box is smaller than the distance between the third pin hole and the surface of the main support box.

[0011] The above-mentioned multifunctional cutting arm of a shaft boring machine, the auxiliary arm includes a first connecting seat, a second connecting seat and a base plate, the first connecting seat and the second connecting seat are both fixed on the plate surface of the base plate, the second connecting seat extends between the two side rib plates and is hinged to the third pin hole through a pin shaft, the second end of the auxiliary arm cylinder is hinged to the first connecting seat through a pin shaft; the rock breaking drum is installed on the base plate.

[0012] In the above-mentioned multifunctional cutting arm of a shaft boring machine, the distance between the hinge point of the second connecting seat and the bottom plate is greater than the distance between the hinge point of the first connecting seat and the bottom plate.

[0013] The multifunctional cutting arm of the shaft boring machine has hydraulic support arms fixedly connected to the four sides of the side wall of the boring machine, and the ends of the hydraulic support arms are pressed tightly against the shaft wall of the shaft; the connecting plate is coaxially arranged with the boring machine.

[0014] The technical solution of the present invention achieves the following beneficial technical effects:

[0015] By optimizing the design of the main arm and auxiliary arm structure, when the main arm and auxiliary arm are retracted, they can drive the rock breaking drum to rise directly to the maintenance platform. Maintenance personnel can directly inspect and repair the rock breaking drum on the maintenance platform, which improves safety and maintenance efficiency while accelerating the progress of the project. In addition, the rock breaking drum can move to the wellhead of the guide shaft to cover the downward passage to prevent people and objects from falling, so that the well wall under the tunnel boring machine can be supported, repaired and other work can be carried out conveniently and safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of the multifunctional cutting arm of the present invention;

[0017] Figure 2 A schematic diagram of the three-dimensional structure of the base of the present invention;

[0018] Figure 3 A schematic diagram of the three-dimensional structure of the main arm of the present invention;

[0019] Figure 4 A schematic cross-sectional structure diagram of the main arm of the present invention;

[0020] Figure 5 A schematic diagram of the three-dimensional structure of the auxiliary arm of the present invention;

[0021] Figure 6 A schematic cross-sectional view of the multifunctional cutting arm of the present invention when it is in the lower limit position;

[0022] Figure 7 A schematic cross-sectional view of the multifunctional cutting arm of the present invention when it is in the upper limit position;

[0023] Figure 8 A schematic cross-sectional structure diagram of the multifunctional cutting arm of the present invention when in a rock breaking state;

[0024] Fig. 9 A schematic diagram of the multifunctional cutting arm of the present invention in the maintenance state in the shaft;

[0025] Fig.10 A schematic diagram of the multifunctional cutting arm of the present invention blocking the pilot shaft in a vertical shaft;

[0026] Fig.11 A schematic diagram of the multifunctional cutting arm of the present invention when breaking rock in a vertical shaft.

[0027] The reference numerals in the figure are represented as follows: 1-base; 101-main connecting seat; 102-first main articulated seat; 103-connecting plate; 2-main arm; 201-first pin hole; 202-second pin hole; 203-second main articulated seat; 204-third pin hole; 205-main support box; 206-side rib plate; 207-gap groove; 3-main arm cylinder; 4-auxiliary arm; 401-first connecting seat; 402-second connecting seat; 403-bottom plate; 5-auxiliary arm cylinder; 6-rock breaking drum; 7-maintenance platform; 8-tunneling machine; 9-hydraulic support arm; 10-well side; 11-well bottom; 12-well guide. DETAILED DESCRIPTION

[0028] The multifunctional cutting arm of the shaft boring machine in this embodiment is as follows: Figure 1 , Figure 6 As shown, it includes a base 1, a main arm 2, a main arm cylinder 3, a jib 4 and a jib cylinder 5, a tunnel boring machine 8 is coaxially supported in a vertical shaft, and hydraulic support arms 9 are fixedly connected to the side walls of the tunnel boring machine 8 on all sides, and the ends of the hydraulic support arms 9 are pressed tightly against the shaft wall 10 of the vertical shaft; the base 1 is fixedly connected to the rotary power output end of the tunnel boring machine 8, the middle part of the first end of the main arm 2 is hinged to the base 1, the first end of the main arm cylinder 3 is hinged to the side wall of the base 1, and the second end of the main arm cylinder 3 is hinged to the side wall of the second end of the main arm 2; the first end of the jib cylinder 5 is hinged to the middle of the first end of the main arm 2, one side of the jib 4 is hinged to the second end of the main arm 2, and the other side of the jib 4 is hinged to the second end of the jib cylinder 5; a rock breaking roller 6 is installed on the end of the jib 4.

[0029] like Fig. 9 As shown, a maintenance platform 7 is installed on the end of the tunnel boring machine 8; when the main arm cylinder 3 and the auxiliary arm cylinder 5 are synchronously retracted to the upper limit position: the main arm 2 swings upward along the base 1 to the limit position, and at the same time, the auxiliary arm 4 swings upward to drive the rock breaking drum 6 to a height higher than the maintenance platform 7 for maintenance; Fig.10 As shown, when the main arm cylinder 3 and the auxiliary arm cylinder 5 are synchronously extended to the lower limit position: the main arm 2 swings downward along the base 1 to the lower limit position, and at the same time, the auxiliary arm 4 swings downward to drive the rock breaking drum 6 to enter the wellhead of the guide well 12 to block the guide well 12.

[0030] like Figure 2As shown, the base 1 includes a main connecting seat 101 and a first main articulated seat 102, the end of the main connecting seat 101 is hinged to the main arm 2 through a pin shaft, the end of the main connecting seat 101 extends along the axis of the shaft and deflects in the direction away from the rock breaking drum 6, the first main articulated seat 102 is fixedly connected to the side wall of the main connecting seat 101, and the first end of the main arm cylinder 3 is hinged in the first main articulated seat 102; a connecting plate 103 is fixedly connected to the top of the main connecting seat 101, the connecting plate 103 is connected to the rotary power output end of the tunnel boring machine 8, and the connecting plate 103 is coaxially arranged with the tunnel boring machine 8.

[0031] like Figure 6 As shown, the hinge point of the main connecting seat 101 and the hinge point of the first main articulated seat 102 are respectively located on both sides of the shaft axis, and the distance between the hinge point of the first main articulated seat 102 and the shaft axis is smaller than the distance between the hinge point of the main connecting seat 101 and the shaft axis, which effectively utilizes the space on the non-excavation side and increases the movement space on the excavation side.

[0032] like Figure 3-4 As shown, the main arm 2 includes a main support box 205 and a side rib plate 206, and the side rib plates 206 parallel to each other are fixedly connected on both sides of the main support box 205. A second pin hole 202 is provided on the first end of the main support box 205, and a second main hinge seat 203 is fixedly connected on the side wall of the second end of the main support box 205. A first pin hole 201 and a third pin hole 204 are provided on the side rib plate 206; a clearance groove 207 is provided on the surface of the main support box 205, and the auxiliary arm cylinder 5 is located between the two side rib plates 206, and the first end of the auxiliary arm cylinder 5 passes through the clearance groove 207 and enters the main support box 205 and is hinged to the second pin hole 202 through the pin shaft. The second end of the main arm cylinder 3 is hinged in the second main hinge seat 203; the end of the main connecting seat 101 extends between the two side ribs 206 and is hinged to the first pin hole 201 through a pin shaft; one side of the auxiliary arm 4 extends between the two side ribs 206 and is hinged to the third pin hole 204 through a pin shaft; the side rib plate 206 is in the shape of an isosceles trapezoid, the first pin hole 201 is arranged close to the waist on the first end of the side rib plate 206, and the third pin hole 204 is arranged close to the waist on the second end of the side rib plate 206; the distance between the first pin hole 201 and the surface of the main support box 205 is smaller than the distance between the third pin hole 204 and the surface of the main support box 205. Conventional hydraulic mechanical arms, in order to reduce the size, usually directly reduce the length of each arm section and the size of the hydraulic cylinder, such as Figure 1As shown, the multifunctional cutting arm suitable for use in the shaft in the present invention ensures that the length of the main arm 2 and the auxiliary arm 4 is not reduced, and the length of the main arm cylinder 3 and the auxiliary arm cylinder 5 is not reduced, and the motion range of the main arm 2 and the auxiliary arm 4 is guaranteed. The structure of the main arm 2 and the position of each hinge point are optimized, and each hinge point is staggered. The main arm cylinder 3 and the auxiliary arm cylinder 5 are staggered in a cross manner, which ensures that the rock breaking range is sufficient and the overall structure is compact. The movement space on the excavation side is large enough, so that after the main arm 2 and the auxiliary arm 4 are folded, the rock breaking drum 6 can move directly to the position where the maintenance platform 7 is exited, which is convenient for maintenance.

[0033] like Figure 5 As shown, the auxiliary arm 4 includes a first connecting seat 401, a second connecting seat 402 and a base plate 403, the first connecting seat 401 and the second connecting seat 402 are both fixed on the plate surface of the base plate 403, the second connecting seat 402 extends between the two side rib plates 206 and is hinged to the third pin hole 204 through a pin shaft, the second end of the auxiliary arm cylinder 5 is hinged to the first connecting seat 401 through a pin shaft; the rock breaking drum 6 is installed on the base plate 403; the distance between the hinge point of the second connecting seat 402 and the base plate 403 is greater than the distance between the hinge point of the first connecting seat 401 and the base plate 403.

[0034] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A multifunctional cutting arm of a shaft boring machine, characterized in that: The invention comprises a base (1), a main arm (2), a main arm cylinder (3), a jib (4) and a jib cylinder (5); a tunnel boring machine (8) is coaxially supported in a vertical shaft; the base (1) is fixedly connected to the rotary power output end of the tunnel boring machine (8); the middle of the first end of the main arm (2) is hinged to the base (1); the first end of the main arm cylinder (3) is hinged to the side wall of the base (1); the second end of the main arm cylinder (3) is hinged to the side wall of the second end of the main arm (2); the first end of the jib cylinder (5) is hinged to the middle of the first end of the main arm (2); one side of the jib (4) is hinged to the second end of the main arm (2); the other side of the jib (4) is hinged to the jib cylinder (5) 5); a rock-breaking drum (6) is installed on the end of the auxiliary arm (4), and a maintenance platform (7) is installed on the end of the tunnel boring machine (8); when the main arm cylinder (3) and the auxiliary arm cylinder (5) are synchronously retracted to the upper limit position: the main arm (2) swings upward along the base (1) to the limit position, and at the same time, the auxiliary arm (4) swings upward to drive the rock-breaking drum (6) to a height higher than the maintenance platform (7) for maintenance; when the main arm cylinder (3) and the auxiliary arm cylinder (5) are synchronously extended to the lower limit position: the main arm (2) swings downward along the base (1) to the lower limit position, and at the same time, the auxiliary arm (4) swings downward to drive the rock-breaking drum (6) into the wellhead of the guide shaft (12) to block the guide shaft (12).

2. A multifunctional cutting arm of a shaft boring machine according to claim 1, characterized in that: The base (1) comprises a main connecting seat (101) and a first main articulated seat (102); the end of the main connecting seat (101) is articulated with the main arm (2) via a pin shaft; the end of the main connecting seat (101) extends along the axis of the shaft and is inclined in a direction away from the rock breaking drum (6); the first main articulated seat (102) is fixedly connected to the side wall of the main connecting seat (101); the first end of the main arm cylinder (3) is articulated in the first main articulated seat (102); a connecting plate (103) is fixedly connected to the top of the main connecting seat (101); the connecting plate (103) is connected to the rotary power output end of the tunnel boring machine (8).

3. The multifunctional cutting arm of a shaft boring machine according to claim 2, characterized in that: The hinge point of the main connecting seat (101) and the hinge point of the first main hinge seat (102) are respectively located on both sides of the shaft axis, and the distance between the hinge point of the first main hinge seat (102) and the shaft axis is smaller than the distance between the hinge point of the main connecting seat (101) and the shaft axis.

4. A multifunctional cutting arm of a shaft boring machine according to claim 3, characterized in that: The main arm (2) comprises a main support box (205) and a side rib plate (206), the side rib plates (206) being parallel to each other and fixedly connected to both sides of the main support box (205), a second pin hole (202) being provided on the first end of the main support box (205), a second main hinge seat (203) being fixedly connected to the side wall of the second end of the main support box (205), and a first pin hole (201) and a third pin hole (204) being provided on the side rib plate (206); a clearance groove (207) being provided on the surface of the main support box (205), and the auxiliary arm oil cylinder (5) Located between the two side ribs (206), the first end of the auxiliary arm cylinder (5) passes through the clearance groove (207) into the main support box (205) and is hinged to the second pin hole (202) through a pin shaft, and the second end of the main arm cylinder (3) is hinged in the second main hinge seat (203); the end of the main connecting seat (101) extends between the two side ribs (206) and is hinged to the first pin hole (201) through a pin shaft; one side of the auxiliary arm (4) extends between the two side ribs (206) and is hinged to the third pin hole (204) through a pin shaft.

5. The multifunctional cutting arm of a shaft boring machine according to claim 4, characterized in that: The side rib plate (206) is in the shape of an isosceles trapezoid, the first pin hole (201) is arranged close to the waist on the first end of the side rib plate (206), and the third pin hole (204) is arranged close to the waist on the second end of the side rib plate (206).

6. A multifunctional cutting arm of a shaft boring machine according to claim 4, characterized in that: The distance between the first pin hole (201) and the surface of the main support box (205) is smaller than the distance between the third pin hole (204) and the surface of the main support box (205).

7. The multifunctional cutting arm of a shaft boring machine according to claim 4, characterized in that: The auxiliary arm (4) comprises a first connecting seat (401), a second connecting seat (402) and a base plate (403); the first connecting seat (401) and the second connecting seat (402) are both fixed on the plate surface of the base plate (403); the second connecting seat (402) extends between the two side rib plates (206) and is hinged to the third pin hole (204) through a pin shaft; the second end of the auxiliary arm cylinder (5) is hinged to the first connecting seat (401) through a pin shaft; the rock breaking drum (6) is installed on the base plate (403).

8. The multifunctional cutting arm of a shaft boring machine according to claim 7, characterized in that: The distance between the hinge point of the second connection seat (402) and the bottom plate (403) is greater than the distance between the hinge point of the first connection seat (401) and the bottom plate (403).

9. The multifunctional cutting arm of a shaft boring machine according to claim 7, characterized in that: The side walls of the tunnel boring machine (8) are fixedly connected with hydraulic support arms (9) on all sides, and the ends of the hydraulic support arms (9) are tightly pressed against the shaft wall (10) of the vertical shaft; the connecting plate (103) is coaxially arranged with the tunnel boring machine (8).

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