A multi-functional cutting arm of a shaft boring machine

Abstract

The application discloses a vertical shaft tunneling machine multifunctional cutting arm, which comprises a base, a main arm, a main arm oil cylinder, a sub-arm and a sub-arm oil cylinder, the tunneling machine is coaxially supported in a vertical shaft, the base is fixedly connected to a rotary power output end of the tunneling machine, a first end middle part of the main arm is hingedly connected to the base, a first end of the main arm oil cylinder is hingedly connected to a side wall of the base, and a second end of the main arm oil cylinder is hingedly connected to a second end side wall of the main arm; a first end of the sub-arm oil cylinder is hingedly connected to a first end middle part of the main arm, one side of the sub-arm is hingedly connected to the second end of the main arm, and the other side of the sub-arm is hingedly connected to a second end of the sub-arm oil cylinder. Through the optimization design of the main arm and the sub-arm structure, when the main arm and the sub-arm are retracted, the rock breaking roller can be directly lifted to a maintenance platform position, maintenance personnel can directly maintain the rock breaking roller on the maintenance platform, the safety is improved, the maintenance efficiency is improved, and the engineering progress is accelerated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shaft tunneling, in particular to a multifunctional cutting arm of a shaft tunneling machine. BACKGROUND

[0002] The shaft tunneling machine is the main equipment for mechanized tunneling of a shaft. The main shaft of the machine is stably supported and provides strong rotary power to drive the cutter head or cutting arm to break rocks. Since most shaft tunneling machines are full-face rock breaking machines, the full-face rock breaking cutting part is large in size and heavy in weight, which causes high cost, hoisting and maintenance difficulties and other problems.

[0003] By using a partial-face cutting arm that can freely swing within a certain range to drive the cutter to swing synchronously, partial-face rock breaking tunneling is carried out. Compared with full-face rock breaking equipment, the overall weight can be reduced and hoisting difficulties can be reduced. However, due to the decrease in the total number of cutters, the working time of a single cutter is increased. During the continuous swinging and rock breaking of the cutter, the force acting on the cutter is more complex and variable, the maintenance period of the cutter is shortened, and the cutter needs to be repaired, maintained and replaced more frequently. However, due to the limitation of the structure of the partial-face cutting arm in the prior art, when the cutter at the end of the partial-face cutting arm is repaired, a worker needs to go down to the bottom of the shaft, which is dangerous. When there is a pilot shaft at the bottom of the shaft, it is difficult for the worker to go down to the bottom of the shaft, and the entire partial-face cutting arm needs to be hoisted out of the shaft, which will consume a lot of time and affect the tunneling efficiency. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a multifunctional cutting arm of a shaft tunneling machine that is easy to maintain, safe, and can improve the tunneling efficiency.

[0005] To solve the above technical problems, the application provides the following technical scheme: a multi-functional cutting arm of a shaft tunneling machine, comprising a base, a main arm, a main arm oil cylinder, a sub-arm and a sub-arm oil cylinder, the tunneling machine is coaxially supported in a shaft, the base is fixedly connected to a rotary power output end of the tunneling machine, a first end middle part of the main arm is hingedly connected to the base, a first end of the main arm oil cylinder is hingedly connected to a side wall of the base, and a second end of the main arm oil cylinder is hingedly connected to a second end side wall of the main arm; a first end of the sub-arm oil cylinder is hingedly connected to a first end middle part of the main arm, one side of the sub-arm is hingedly connected to the second end of the main arm, and the other side of the sub-arm is hingedly connected to a second end of the sub-arm oil cylinder; a rock breaking roller is installed on an end part of the sub-arm, and a maintenance platform is installed on an end part of the tunneling machine; when the main arm oil cylinder and the sub-arm oil cylinder are synchronously contracted to an upper limit position, the main arm swings upward along the base to a limit position, and meanwhile, the sub-arm swings upward to drive the height of the rock breaking roller to be higher than the maintenance platform for maintenance; when the main arm oil cylinder and the sub-arm oil cylinder are synchronously extended to a lower limit position, the main arm swings downward along the base to a lower limit position, and meanwhile, the sub-arm swings downward to drive the rock breaking roller to enter an inlet of a pilot shaft and block the pilot shaft.

[0006] The multi-functional cutting arm of the shaft tunneling machine, the base comprises a main connecting base and a first main hinge seat, an end part of the main connecting base is hingedly connected to the main arm through a pin shaft, the end part of the main connecting base extends along an axis of the shaft and is inclined away from the rock breaking roller, the first main hinge seat is fixedly connected to a side wall of the main connecting base, and a first end of the main arm oil cylinder is hingedly connected to the first main hinge seat; a connecting disc is fixedly connected to a top part of the main connecting base, and the connecting disc is connected to the rotary power output end of the tunneling machine. Since the shaft well diameter is limited, that is, the maximum rotary radius of the multi-functional cutting arm is limited, by arranging the main connecting base to be inclined away from the rock breaking roller, the axial extension distance of the multi-functional cutting arm can be maximized while ensuring that the maximum rotary radius of the multi-functional cutting arm matches the shaft well diameter, which indirectly increases the effective length of the main arm, thereby increasing the maximum rock breaking tunneling range of the tunneling machine in a single step, reducing the number of steps of the tunneling machine, and improving the tunneling efficiency.

[0007] The hinge points of the main connecting base and the first main hinge seat are respectively located on both sides of the shaft axis, and the distance between the first main hinge seat hinge point and the shaft axis is less than the distance between the main connecting base hinge point and the shaft axis.

[0008] The multi-functional cutting arm of the shaft tunneling machine, the main arm comprises a main support box and a side rib plate, the side rib plates are fixedly connected to the two sides of the main support box and are parallel to each other, a second pin hole is formed in the first end of the main support box, a second main hinge seat is fixedly connected to the second end side wall of the main support box, and a first pin hole and a third pin hole are formed in the side rib plate; a gap is formed in the surface of the main support box, the auxiliary arm oil cylinder is located between the two side rib plates, the first end of the auxiliary arm oil cylinder penetrates into the main support box through the gap and is hinged to the second pin hole through a pin shaft, and the second end of the main arm oil cylinder is hinged in the second main hinge seat; the end of the main connecting seat extends into the two side rib plates and is hinged to the first pin hole through a pin shaft; one side of the auxiliary arm extends into the two side rib plates and is hinged to the third pin hole through a pin shaft. Through the optimized design of the main arm structure and the positions of the hinge points, the main arm oil cylinder and the auxiliary arm oil cylinder are cross arranged in the space range, the movement range of the main arm and the auxiliary arm is ensured under the condition that the cavity of the oil cylinder stroke is not reduced, the overall structure is inclined to the non-excavation side, the shaft space of the non-excavation side is utilized, the main arm and the auxiliary arm have larger movement space on the excavation side, the rock breaking roller can move to the maintenance platform position, the excavation side refers to the side shaft space where the rock breaking roller is arranged, and the other side is the non-excavation side. This layout mode not only avoids mutual interference in the movement process, but also makes the overall structure compact due to the utilization of the non-excavation space, and is beneficial to transportation and movement in the engineering environment with limited space in the shaft.

[0009] The multi-functional cutting arm of the shaft tunneling machine, the shape of the side rib plate is isosceles trapezoidal, 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] The multi-functional cutting arm of the shaft tunneling 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 multi-functional cutting arm of the shaft tunneling machine, the auxiliary arm comprises a first connecting seat, a second connecting seat and a bottom plate, the first connecting seat and the second connecting seat are fixed on the plate surface of the bottom plate, the second connecting seat extends into the two side rib plates and is hinged to the third pin hole through a pin shaft, and the second end of the auxiliary arm oil cylinder is hinged to the first connecting seat through a pin shaft; the rock breaking roller is installed on the bottom plate.

[0012] The multi-functional cutting arm of the shaft tunneling 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 is provided with a hydraulic support arm fixedly connected to the periphery of the side wall of the shaft boring machine, and the end of the hydraulic support arm is tightly pressed against the shaft side of the shaft.

[0014] The technical scheme of the present application has the following beneficial technical effects:

[0015] Through the optimized design of the main arm and the auxiliary arm structure, when the main arm and the auxiliary arm are retracted, the rock breaking roller can be directly lifted to the maintenance platform position, and the maintenance personnel can directly maintain the rock breaking roller on the maintenance platform, thereby improving the safety and the maintenance efficiency, and accelerating the engineering progress. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

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

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

[0021] Figure 6 The schematic diagram of the cross-sectional structure of the multifunctional cutting arm of the present application in the lower limit position;

[0022] Figure 7 The schematic diagram of the cross-sectional structure of the multifunctional cutting arm of the present application in the upper limit position;

[0023] Figure 8 The schematic diagram of the cross-sectional structure of the multifunctional cutting arm of the present application in the rock breaking state;

[0024] Figure 9 The schematic diagram of the multifunctional cutting arm of the present application in the maintenance state in the shaft;

[0025] Figure 10 The schematic diagram of the multifunctional cutting arm of the present application in the state of blocking the guide shaft in the shaft;

[0026] Figure 11 The schematic diagram of the multifunctional cutting arm of the present application in the state of rock breaking in the shaft.

[0027] The figure mark indicates that: 1-base; 101-main connecting seat; 102-first main hinged seat; 103-connection disc; 2-main arm; 201-first pin hole; 202-second pin hole; 203-second main hinged seat; 204-third pin hole; 205-main support box; 206-side rib plate; 207-give way slot; 3-main arm oil cylinder; 4-secondary arm; 401-first connecting seat; 402-second connecting seat; 403-bottom plate; 5-secondary arm oil cylinder; 6-rock breaking roller; 7-maintenance platform; 8-tunneling machine; 9-hydraulic support arm; 10-shaft lining; 11-shaft bottom; 12-guide shaft. DETAILED DESCRIPTION

[0028] The multi-functional cutting arm of the shaft tunneling machine in the embodiment, as shown in Figure 1 , Figure 6 , comprises a base 1, a main arm 2, a main arm oil cylinder 3, a secondary arm 4 and a secondary arm oil cylinder 5, the tunneling machine 8 is coaxially supported in the shaft, the side wall of the tunneling machine 8 is fixedly connected with a hydraulic support arm 9, the end of the hydraulic support arm 9 is tightly pressed against the shaft lining 10 of the shaft, the base 1 is fixedly connected to the rotary power output end of the tunneling machine 8, the first end of the main arm 2 is hingedly connected to the base 1, the first end of the main arm oil cylinder 3 is hingedly connected to the side wall of the base 1, the second end of the main arm oil cylinder 3 is hingedly connected to the second end side wall of the main arm 2, the first end of the secondary arm oil cylinder 5 is hingedly connected to the middle of the first end of the main arm 2, one side of the secondary arm 4 is hingedly connected to the second end of the main arm 2, the other side of the secondary arm 4 is hingedly connected to the second end of the secondary arm oil cylinder 5, and the end of the secondary arm 4 is provided with a rock breaking roller 6.

[0029] As shown in Figure 9 , the end of the tunneling machine 8 is provided with a maintenance platform 7, when the main arm oil cylinder 3 and the secondary arm oil cylinder 5 are synchronously contracted to the upper limit position, the main arm 2 swings upward along the base 1 to the limit position, at the same time, the secondary arm 4 swings upward to drive the height of the rock breaking roller 6 to be higher than the maintenance platform 7 for maintenance, as shown in Figure 10 , when the main arm oil cylinder 3 and the secondary arm oil 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, at the same time, the secondary arm 4 swings downward to drive the rock breaking roller 6 to enter the well mouth of the guide shaft 12 to block the guide shaft 12.

[0030] As shown in Figure 2As shown, the base 1 comprises a main connecting seat 101 and a first main hinged seat 102, the end of the main connecting seat 101 is hinged with the main arm 2 through a pin shaft, the end of the main connecting seat 101 extends along the axis of the shaft and is inclined to the direction away from the rock breaking drum 6, the first main hinged seat 102 is fixedly connected on the side wall of the main connecting seat 101, and the first end of the main arm oil cylinder 3 is hinged in the first main hinged seat 102; the top of the main connecting seat 101 is fixedly connected with a connecting disc 103, the connecting disc 103 is connected with the slewing power output end of the heading machine 8, and the connecting disc 103 is coaxially arranged with the heading machine 8.

[0031] As shown in the drawings, Figure 6 As shown, the hinged points of the main connecting seat 101 and the first main hinged seat 102 are respectively located on both sides of the shaft axis, the distance between the first main hinged seat 102 hinged point and the shaft axis is less than the distance between the main connecting seat 101 hinged point and the shaft axis, and the space on the non-trenching side is effectively utilized, and the movement space on the trenching side is increased.

[0032] As shown in the drawings, Figures 3-4 As shown, the main arm 2 comprises a main support box 205 and a side rib plate 206, the side rib plate 206 is fixedly connected on both sides of the main support box 205 and is parallel to each other, the first end of the main support box 205 is provided with a second pin hole 202, the second end side wall of the main support box 205 is fixedly connected with a second main hinged seat 203, and the side rib plate 206 is provided with a first pin hole 201 and a third pin hole 204; the surface of the main support box 205 is provided with a gap slot 207, the auxiliary arm oil cylinder 5 is located between the two side rib plates 206, the first end of the auxiliary arm oil cylinder 5 passes through the gap slot 207 and enters the main support box 205 and is hinged with the second pin hole 202 through a pin shaft, and the second end of the main arm oil cylinder 3 is hinged in the second main hinged seat 203; the end of the main connecting seat 101 extends into the two side rib plates 206 and is hinged with the first pin hole 201 through a pin shaft; one side of the auxiliary arm 4 extends into the two side rib plates 206 and is hinged with the third pin hole 204 through a pin shaft; the shape of the side rib plate 206 is isosceles trapezoidal, 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 less than the distance between the third pin hole 204 and the surface of the main support box 205. In order to reduce the size, the conventional hydraulic mechanical arm usually directly reduces the length of each arm section and the size of the hydraulic cylinder, Figure 1As shown, the multifunctional cutting arm in the application is applied in the shaft, the length of the main arm 2 and the auxiliary arm 4 is not reduced, the length of the main arm cylinder 3 and the auxiliary arm cylinder 5 is not reduced, the structure of the main arm 2 and the position of each hinge point are optimized and designed, each hinge point is arranged in a staggered manner, the main arm cylinder 3 and the auxiliary arm cylinder 5 are arranged in a staggered manner, the rock breaking range is ensured, the overall structure is compact, the movement space of the excavation side is large enough, the rock breaking roller 6 can directly move to the position of the maintenance platform 7 after the main arm 2 and the auxiliary arm 4 are folded, and the maintenance is facilitated.

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

[0034] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the patent application claims.

Claims

1. A multi-functional cutting boom for a shaft heading machine, characterized in that, The invention relates to a rock breaking device, which comprises a base (1), a main arm (2), a main arm oil cylinder (3), a sub-arm (4) and a sub-arm oil cylinder (5), wherein the rock breaking device (8) is coaxially supported in a shaft, the base (1) is fixedly connected to a rotary power output end of the rock breaking device (8), a first end middle part of the main arm (2) is hingedly connected to the base (1), a first end of the main arm oil cylinder (3) is hingedly connected to a side wall of the base (1), a second end of the main arm oil cylinder (3) is hingedly connected to a second end side wall of the main arm (2), a first end of the sub-arm oil cylinder (5) is hingedly connected to a first end middle part of the main arm (2), one side of the sub-arm (4) is hingedly connected to the second end of the main arm (2), the other side of the sub-arm (4) is hingedly connected to a second end of the sub-arm oil cylinder (5), a rock breaking roller (6) is installed on an end part of the sub-arm (4), a maintenance platform (7) is installed on an end part of the rock breaking device (8), when the main arm oil cylinder (3) and the sub-arm oil cylinder (5) are synchronously contracted to an upper limit position, the main arm (2) swings upward along the base (1) to a limit position, at the same time, the sub-arm (4) swings upward to drive the height of the rock breaking roller (6) to be higher than the maintenance platform (7) for maintenance, when the main arm oil cylinder (3) and the sub-arm oil cylinder (5) are synchronously extended to a lower limit position, the main arm (2) swings downward along the base (1) to a lower limit position, at the same time, the sub-arm (4) swings downward to drive the rock breaking roller (6) to enter an opening of a pilot shaft (12) to block the pilot shaft (12).

2. A multi-functional cutting boom for a raise boring machine as claimed in claim 1, wherein, The base (1) comprises a main connecting base (101) and a first main hinged seat (102), an end part of the main connecting base (101) is hingedly connected to the main arm (2) through a pin shaft, the end part of the main connecting base (101) extends along an axis of the shaft and is inclined away from the rock breaking roller (6), the first main hinged seat (102) is fixedly connected to a side wall of the main connecting base (101), and a first end of the main arm oil cylinder (3) is hingedly connected in the first main hinged seat (102), a connecting disc (103) is fixedly connected to a top part of the main connecting base (101), and the connecting disc (103) is connected to a rotary power output end of the rock breaking device (8).

3. A multi-functional cutting boom for a raise boring machine as claimed in claim 2, wherein, The hinged points of the main connecting base (101) and the first main hinged seat (102) are respectively located on two sides of the shaft axis, and the distance between the hinged point of the first main hinged seat (102) and the shaft axis is less than the distance between the hinged point of the main connecting base (101) and the shaft axis.

4. A multi-functional cutting boom for a raise boring machine as claimed in claim 3 wherein, The main arm (2) comprises a main support box (205) and side rib plates (206), the side rib plates (206) are fixedly connected to the two sides of the main support box (205) and are parallel to each other, a second pin hole (202) is formed in the first end of the main support box (205), a second main hinge seat (203) is fixedly connected to the second end side wall of the main support box (205), a first pin hole (201) and a third pin hole (204) are formed in the side rib plate (206), a displacement slot (207) is formed in the surface of the main support box (205), the auxiliary arm oil cylinder (5) is located between the two side rib plates (206), the first end of the auxiliary arm oil cylinder (5) passes through the displacement slot (207) and enters the main support box (205) and is hinged to the second pin hole (202) through a pin shaft, the second end of the main arm oil cylinder (3) is hinged in the second main hinge seat (203), the end of the main connecting seat (101) extends into the two side rib plates (206) and is hinged to the first pin hole (201) through a pin shaft, one side of the auxiliary arm (4) extends into the two side rib plates (206) and is hinged to the third pin hole (204) through a pin shaft.

5. A multi-functional cutting boom for a raise boring machine as claimed in claim 4 wherein, The side rib plate (206) is isosceles trapezoidal, 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 multi-functional cutting boom for a raise boring machine as claimed in claim 4 wherein, The distance between the first pin hole (201) and the surface of the main support box (205) is less than the distance between the third pin hole (204) and the surface of the main support box (205).

7. A multi-functional cutting boom for a raise boring machine as defined in claim 4, wherein The auxiliary arm (4) comprises a first connecting seat (401), a second connecting seat (402) and a bottom plate (403), the first connecting seat (401) and the second connecting seat (402) are fixed on the plate surface of the bottom plate (403), the second connecting seat (402) extends into 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 oil cylinder (5) is hinged to the first connecting seat (401) through a pin shaft, and the rock breaking roller (6) is installed on the bottom plate (403).

8. A multi-functional cutting boom for a raise boring machine according to claim 7, wherein, The distance between the hinge point of the second connecting seat (402) and the bottom plate (403) is greater than the distance between the hinge point of the first connecting seat (401) and the bottom plate (403).

9. A multi-functional cutting boom for a raise boring machine as claimed in claim 7 wherein, The sidewall of the heading machine (8) is fixedly connected with a hydraulic support arm (9), the end of the hydraulic support arm (9) is tightly pressed against the shaft lining (10) of the shaft, and the connecting disc (103) is coaxially arranged with the heading machine (8).

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