A rear-mounted airborne temporary support device for a tunnel boring machine

Abstract

The present invention discloses a rear-mounted airborne temporary support device for a tunnel boring machine, and relates to the technical field of temporary support devices. The temporary support device aims to solve the technical problems in the prior art that the connection with the tunnel boring machine is easy to break, the support area is small, and the device does not have a rotation and telescopic function. The temporary support device comprises a boom, a first telescopic cylinder installed on the inner side of the left end of the boom, a middle arm installed in the boom and connected to the telescopic end of the first telescopic cylinder, a second telescopic cylinder installed on the inner side of the left end of the middle arm, and a small arm installed in the middle arm and connected to the telescopic end of the second telescopic cylinder. The temporary support device is rear-mounted and fixed on the tunnel boring machine body frame. During cutting, the temporary support device is not easy to shake and the support area is increased. The design of the telescopic boom, middle arm and small arm can be used to adjust the working range, further enhance the stability of the connection between the temporary support device and the tunnel boring machine, and facilitate the adjustment of the support angle in conjunction with the rotating mechanism.

Description

Technical Field

[0001] The present invention belongs to the technical field of temporary support devices, and in particular relates to a rear-mounted machine-mounted temporary support device for a tunnel boring machine. Background Art

[0002] When anchor mesh belt support is used in coal mines, timely temporary support is required after the tunnel boring machine cuts a certain distance. At this stage, the onboard temporary support is installed on the front exploration beam of the cutting part. The front exploration beam is generally installed on the cutting part and is fixed at the connection between 2 support rods (frame) and the pin shaft of the cutting part. It is powered by a hydraulic cylinder and has a support area of ​​about 4 square meters. During anchor support, the operators are still working in the mid-air top area, and the front exploration beam is manually fixed by pipe-draining. The three front exploration beams are fixed on the arch top anchor with a lifting ring beam, and the front end is connected to the top plate with square wood and wood batches for temporary support.

[0003] At present, the invention patent with patent number CN201810215385.1 discloses a temporary support device on board a horizontal axis tunnel boring machine, including a main support top frame, a station sleeve, a station pipe, a swing oil cylinder, a telescopic oil cylinder, and a support oil cylinder. Two cross heads are symmetrically installed on both sides of the support top frame. The support top frame is connected to the forward extension top frame through the forward extension oil cylinder. The cross heads on the same side are hinged to the station pipe and the support oil cylinder respectively. The station pipe is sleeved in the station sleeve and driven by the telescopic oil cylinder. The other end of the support oil cylinder is hinged to one side of the end of the station sleeve. The bottom of the station sleeve is hinged to the main slide through the support front axis. A connecting plate is installed on one side of the sleeve, and a supporting front axle and a supporting rear axle are installed at both ends of the top of the main slide respectively. The two ends of the supporting rear axle are hinged to the swing cylinder, and the other end of the swing cylinder is hinged to the connecting plate. The main slide is slidably installed in the fixed main slide, and a slide cylinder is installed in the fixed main slide. The slide cylinder is connected to the main slide. It adopts the method of changing the hinge points of the supporting four-bar linkage from plane superposition to three-dimensional interlacing, thereby making full use of the space and reducing the overall structure height. However, the connection between the temporary support device and the tunneling machine is easy to break, and the support area is small, and it does not have the rotation and telescopic function.

[0004] Therefore, the above-mentioned problem of not having the rotation and telescopic function in daily life needs to be solved urgently to improve the use scenarios of temporary support devices. Summary of the Invention

[0005] (1) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a rear-mounted airborne temporary support device for a tunnel boring machine. The temporary support device is intended to solve the technical problems in the existing technology that the connection with the tunnel boring machine is easy to break, the support area is small, and there is no rotation and telescopic function.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a rear-mounted airborne temporary support device for a tunnel boring machine, which includes a boom, a first telescopic cylinder installed on the inner side of the left end of the boom, a middle arm installed in the boom and connected to the telescopic end of the first telescopic cylinder, a second telescopic cylinder installed on the inner side of the left end of the middle arm, and a small arm installed in the middle arm and connected to the telescopic end of the second telescopic cylinder; wherein, a first rotating pin is installed at both the front and rear ends of the small arm, and the first rotating pin and the other first rotating pin are rotatably connected to a U-shaped rotating frame, the upper end of the U-shaped rotating frame is fixedly connected to a fixed rod symmetrically distributed front and back, a telescopic rod is provided on the inner side of the left end of the fixed rod, the telescopic rod and the left end of the other telescopic rod are fixedly connected to a first support rod, the left end of the first support rod is fixedly connected to a first reinforcement rod equidistantly distributed, the left end of the first reinforcement rod is fixedly connected to a second support rod, a first rotating frame symmetrically distributed front and back is rotatably connected between the first support rod and the second support rod, and a first motor for driving the first rotating frame to rotate is installed at the right end of the first support rod. The third support rod is installed at the lower end of the fixed rod and is connected to the first support rod. The third support rod and the fourth support rod are installed at the left and right ends of the outer side of the fixed rod respectively. A gear rod is installed between the third support rod and the fourth support rod. A second reinforcement rod is provided between the fixed rod and the gear rod. A fifth support rod is installed on the outer side of the gear rod. An outer connecting rod is installed on the outer side of the third support rod and the fifth support rod. An oblique support rod is fixedly connected between the fixed rod and the third support rod. A third reinforcement rod and a fourth reinforcement rod are installed between the fixed rod and another fixed rod. A groove is provided at the right end of the connecting rod, and the left end of the outer connecting rod is rotatably connected to the second rotating pin, and the second motor is fixedly connected in the groove, and the outer side of the outer connecting rod is rotatably connected to the second rotating frame, and the lower end of the big arm is fixedly connected to the fixed seat symmetrically distributed front and back, and the third rotating pin is rotatably connected between the fixed seat and another fixed seat, and the fourth telescopic cylinder is installed on the outer side of the third rotating pin, and the lower end of the fourth telescopic cylinder is fixedly connected to the connecting seat, and the front and rear ends of the connecting seat are fixedly connected to the fourth rotating pin, and a rotating mechanism is installed between the left end of the forearm and the fixed rod.

[0009] When using the temporary support device of the present technical solution, the device is installed on the main frame of the tunnel boring machine through the fourth rotating pin and the main arm, and then the first telescopic cylinder and the second telescopic cylinder are controlled by the operating table to realize the extension and retraction of the middle arm and the small arm, and the first motor is started to drive the first rotating frame between the first support rod and the second support rod to rotate, and then the second motor in the groove at the left end of the outer connecting rod is started to drive the second rotating frame to flip, and the third telescopic cylinder is started to push the first support rod to move to the left, and the telescopic rod at the right end of the first support rod slides in the fixed rod to expand the area, and then the wire mesh and steel belt are placed on the upper ends of the fixed rod, the first support rod, the first reinforcement rod, the second support rod and the outer connecting rod, and the rotating mechanism is started. Under the action of the first rotating pin and the U-shaped rotating frame, the angle of the support part is adjusted, and then the angle of the main arm is adjusted by the fourth telescopic cylinder.

[0010] Furthermore, the rotating mechanism includes a first side plate and a second side plate, a first rotating rod rotatably installed between the first side plate and the other first side plate, a second rotating rod rotatably installed between the second side plate and the other second side plate, and a fifth telescopic cylinder fixed between the first rotating rod and the second rotating rod. Through the design of the rotating mechanism, the firmness between the temporary support device and the tunnel boring machine is further enhanced.

[0011] Furthermore, the first side plate is fixed to the lower end of the fixed rod, and the second side plate is installed at the left end of the small arm. When the fifth telescopic cylinder is started, the small arm is driven to rotate through the first side plate and the second side plate, thereby achieving angle adjustment.

[0012] Furthermore, the fixing rod and another fixing rod are parallel to each other, and the fixing rod and the third reinforcement rod and the fourth reinforcement rod are perpendicular to each other. Through the coordinated use of the fixing rod, the third reinforcement rod and the fourth reinforcement rod, the stability of the frame structure is ensured and it is not easy to deform.

[0013] Furthermore, the distance that the telescopic rod moves in the fixed rod is equal to the stroke of the third telescopic cylinder, and the first support rod is driven to move leftward by the third telescopic cylinder, thereby expanding the supporting area.

[0014] Furthermore, the lengths of the first support rod and the second support rod are equal, and the length of the first support rod is greater than the distance between one outer connecting rod and another outer connecting rod, ensuring that the structure composed of the first support rod and the second support rod has sufficient area.

[0015] Furthermore, the number of the first reinforcement rods is not less than 3, the first rotating frame is a "U"-shaped structure, and the length of the first rotating frame is greater than half the length of the first reinforcement rod. Through the design of the first rotating frame, the function of expanding the support area is activated.

[0016] Furthermore, the second rotating pin is connected to the inner wall of the left end of the second rotating frame, and the second motor output shaft is connected to the inner wall of the right end of the second rotating frame. The second rotating frame is driven to rotate by the second motor, thereby expanding the support area and improving the working effect of the temporary support device.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present invention are: the temporary support device of the present invention is rear-mounted and fixed on the main frame of the tunnel boring machine. The temporary support device is not easy to shake during cutting and the support area is increased. The frame adopts a cantilever beam structure, which is not easy to deform and is fixed and stable. The working range can be adjusted by utilizing the design of the retractable upper arm, middle arm and lower arm. By setting the fourth telescopic cylinder, the stability of the connection between the temporary support device and the tunnel boring machine is further enhanced. The support angle can be adjusted conveniently in conjunction with the rotating mechanism. The support adopts a retractable and flippable design, which can increase the support area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a specific embodiment of the temporary support device of the present invention;

[0020] Figure 2 This is a front structural schematic diagram of a specific embodiment of the temporary support device of the present invention;

[0021] Figure 3 This is a structural schematic diagram of the fixed rod and the telescopic rod in an extended state in a specific embodiment of the temporary support device of the present invention;

[0022] Figure 4 This is a schematic diagram of the installation structure of the outer connecting rod and the second rotating frame in a specific embodiment of the temporary support device of the present invention;

[0023] Figure 5 This is a schematic diagram of the assembly of a rotating mechanism and a U-shaped rotating frame in a specific embodiment of the temporary support device of the present invention;

[0024] Figure 6 This is a schematic diagram of the assembly of the upper arm, middle arm and lower arm in a specific embodiment of the temporary support device of the present invention.

[0025] The markings in the accompanying drawings are: 1. upper arm; 2. first telescopic cylinder; 3. middle arm; 4. second telescopic cylinder; 5. lower arm; 6. first rotating pin; 7. U-shaped rotating frame; 8. fixed rod; 9. telescopic rod; 10. first support rod; 11. first reinforcement rod; 12. second support rod; 13. first rotating frame; 14. first motor; 15. third telescopic cylinder; 16. third support rod; 17. fourth support rod; 18. gear lever; 19. second reinforcement rod; 20. fifth support rod ; 21. Outer connecting rod; 22. Diagonal support rod; 23. Third reinforcing rod; 24. Fourth reinforcing rod; 25. Groove; 26. Second rotating pin; 27. Second motor; 28. Second rotating frame; 29. ​​Fixed seat; 30. Third rotating pin; 31. Fourth telescopic cylinder; 32. Connecting seat; 33. Fourth rotating pin; 34. Rotating mechanism; 341. First side plate; 342. Second side plate; 343. First rotating rod; 344. Second rotating rod; 345. Fifth telescopic cylinder. DETAILED DESCRIPTION

[0026] This specific embodiment is a rear-mounted temporary support device for a roadheader, and its three-dimensional structural diagram is shown in FIG. Figure 1 As shown, the front structure diagram is as follows Figure 2As shown, the temporary support device includes a boom 1, a first telescopic cylinder 2 installed on the inner side of the left end of the boom 1, a middle arm 3 installed in the boom 1 and connected to the telescopic end of the first telescopic cylinder 2, a second telescopic cylinder 4 installed on the inner side of the left end of the middle arm 3, and a small arm 5 installed in the middle arm 3 and connected to the telescopic end of the second telescopic cylinder 4; a first rotating pin 6 is installed at both the front and rear ends of the small arm 5, and the first rotating pin 6 and the other first rotating pin 6 are rotatably connected to the outside of a U-shaped rotating frame 7, and the upper end of the U-shaped rotating frame 7 is fixedly connected to a fixed rod 8 symmetrically distributed front and back, and the fixed rod 8 is provided on the inner side of the left end. There is a telescopic rod 9, the left end of the telescopic rod 9 and the other telescopic rod 9 is fixedly connected to the first support rod 10, the left end of the first support rod 10 is fixedly connected to the first reinforcement rod 11 distributed equidistantly, the left end of the first reinforcement rod 11 is fixedly connected to the second support rod 12, the first support rod 10 and the second support rod 12 are rotatably connected to the first rotating frame 13 distributed front and back, the right end of the first support rod 10 is equipped with a first motor 14 for driving the first rotating frame 13 to rotate, the lower end of the fixed rod 8 is equipped with a third telescopic cylinder 15 connected to the first support rod 10, the left outer side of the fixed rod 8 The third support rod 16 and the fourth support rod 17 are respectively installed at the right two ends, a gear rod 18 is installed between the third support rod 16 and the fourth support rod 17, a second reinforcement rod 19 is provided between the fixed rod 8 and the gear rod 18, a fifth support rod 20 is installed on the outside of the gear rod 18, an outer connecting rod 21 is installed on the outside of the third support rod 16 and the fifth support rod 20, a diagonal support rod 22 is fixedly connected between the fixed rod 8 and the third support rod 16, a third reinforcement rod 23 and a fourth reinforcement rod 24 are installed between the fixed rod 8 and the other fixed rod 8, a groove 25 is provided at the right end of the outer connecting rod 21, and the outer connecting rod 2 The left end of the arm 1 is rotatably connected to a second rotating pin 26, a second motor 27 is fixedly connected in the groove 25, and a second rotating frame 28 is rotatably connected to the outer side of the outer connecting rod 21. The lower end of the arm 1 is fixedly connected to fixed seats 29 symmetrically distributed front and back. A third rotating pin 30 is rotatably connected between the fixed seat 29 and another fixed seat 29. A fourth telescopic cylinder 31 is installed on the outer side of the third rotating pin 30. The lower end of the fourth telescopic cylinder 31 is fixedly connected to a connecting seat 32. The front and rear ends of the connecting seat 32 are fixedly connected to fourth rotating pins 33. A rotating mechanism 34 is installed between the left end of the arm 5 and the fixed rod 8.

[0027] Among them, the rotating mechanism 34 includes a first side plate 341 and a second side plate 342, a first rotating rod 343 rotatable between the first side plate 341 and another first side plate 341, a second rotating rod 344 rotatable between the second side plate 342 and another second side plate 342, and a fifth telescopic cylinder 345 fixed between the first rotating rod 343 and the second rotating rod 344. The first side plate 341 is fixed to the lower end of the fixed rod 8, and the second side plate 342 is installed at the left end of the forearm 5.

[0028] At the same time, the fixed rod 8 and the other fixed rod 8 are parallel to each other, and the fixed rod 8 is perpendicular to the third reinforcement rod 23 and the fourth reinforcement rod 24. The distance moved by the telescopic rod 9 in the fixed rod 8 is equal to the stroke of the third telescopic cylinder 15. The lengths of the first support rod 10 and the second support rod 12 are equal, and the length of the first support rod 10 is greater than the distance between the outer connecting rod 21 and the other outer connecting rod 21.

[0029] In addition, the number of first reinforcement rods 11 is no less than 3, the first rotating frame 13 is a "U"-shaped structure, and the length of the first rotating frame 13 is greater than half the length of the first reinforcement rod 11, the second rotating pin 26 is connected to the inner wall of the left end of the second rotating frame 28, and the output shaft of the second motor 27 is connected to the inner wall of the right end of the second rotating frame 28.

[0030] The structural diagram of the temporary support device in the extended state of the fixed rod 8 and the telescopic rod 9 is as follows Figure 3 As shown, the schematic diagram of the installation structure of the outer connecting rod 21 and the second rotating frame 28 is shown in Figure 4 As shown, the assembly diagram of the rotating mechanism 34 and the U-shaped rotating frame 7 is shown in FIG. Figure 5 As shown, the assembly diagram of the upper arm 1, middle arm 3 and lower arm 5 is as shown in Figure 6 shown.

[0031] When using the temporary support device of the present technical solution, the device is installed on the tunnel boring machine body frame through the fourth rotating pin 33 and the boom 1, and then the first telescopic cylinder 2 and the second telescopic cylinder 4 are controlled through the operating console to realize the telescopic operation of the middle arm 3 and the small arm 5, and the first motor 14 is started to drive the first rotating frame 13 between the first support rod 10 and the second support rod 12 to rotate, and then the second motor 27 in the groove 25 at the left end of the outer connecting rod 21 is started to drive the second rotating frame 28 to flip, and the third telescopic cylinder 15 is started to push the first support rod 10 to move to the left, and the telescopic rod 9 at the right end of the first support rod 10 slides in the fixed rod 8 to expand the area, and then the wire mesh and steel belt are placed on the upper ends of the fixed rod 8, the first support rod 10, the first reinforcement rod 11, the second support rod 12 and the outer connecting rod 21, and the rotating mechanism 34 is started. Under the action of the first rotating pin 6 and the U-shaped rotating frame 7, the angle of the support part is adjusted, and then the angle of the boom 1 is adjusted by the fourth telescopic cylinder 31.

Claims

1. A rear-mounted, airborne temporary support device for a roadheader, comprising a boom (1), a first telescopic cylinder (2) mounted on the inner side of the left end of the boom (1), a middle arm (3) mounted in the boom (1) and connected to the telescopic end of the first telescopic cylinder (2), a second telescopic cylinder (4) mounted on the inner side of the left end of the middle arm (3), and a small arm (5) mounted in the middle arm (3) and connected to the telescopic end of the second telescopic cylinder (4); characterized in that: The front and rear ends of the small arm (5) are both provided with a first rotating pin (6), the outer sides of the first rotating pin (6) and another first rotating pin (6) are rotatably connected to a U-shaped rotating frame (7), the upper end of the U-shaped rotating frame (7) is fixedly connected to a fixed rod (8) symmetrically distributed in the front and rear, a telescopic rod (9) is provided on the inner side of the left end of the fixed rod (8), the left ends of the telescopic rod (9) and another telescopic rod (9) are fixedly connected to a first supporting rod (10), the left end of the first supporting rod (10) is fixedly connected to a first reinforcing rod (11) distributed at equal intervals, and the left end of the first reinforcing rod (11) is fixedly connected to a second supporting rod (12 ), a first rotating frame (13) symmetrically distributed front and back is rotatably connected between the first support rod (10) and the second support rod (12), a first motor (14) for driving the first rotating frame (13) to rotate is installed at the right end of the first support rod (10), a third telescopic cylinder (15) connected to the first support rod (10) is installed at the lower end of the fixed rod (8), a third support rod (16) and a fourth support rod (17) are installed at the left and right ends of the outer side of the fixed rod (8), a shift rod (18) is installed between the third support rod (16) and the fourth support rod (17), and the fixed rod (8) and the shift rod ( A second reinforcing rod (19) is provided between the first and second supporting rods (18), a fifth supporting rod (20) is installed on the outside of the shift rod (18), an outer connecting rod (21) is installed on the outside of the third supporting rod (16) and the fifth supporting rod (20), a diagonal support rod (22) is fixedly connected between the fixing rod (8) and the third supporting rod (16), a third reinforcing rod (23) and a fourth reinforcing rod (24) are installed between the fixing rod (8) and another fixing rod (8), a groove (25) is provided at the right end of the outer connecting rod (21), a second rotating pin (26) is rotatably connected to the left end of the outer connecting rod (21), and a A second motor (27) is provided. The outer side of the outer connecting rod (21) is rotatably connected to a second rotating frame (28). The lower end of the large arm (1) is fixedly connected to a fixed seat (29) symmetrically distributed in the front and rear directions. A third rotating pin (30) is rotatably connected between the fixed seat (29) and another fixed seat (29). A fourth telescopic cylinder (31) is installed on the outer side of the third rotating pin (30). The lower end of the fourth telescopic cylinder (31) is fixedly connected to a connecting seat (32). The front and rear ends of the connecting seat (32) are both fixedly connected to a fourth rotating pin (33). A rotating mechanism (34) is installed between the left end of the small arm (5) and the fixed rod (8).

2. A rear-mounted temporary support device for a roadheader according to claim 1, characterized in that: The rotating mechanism (34) includes a first side plate (341) and a second side plate (342), a first rotating rod (343) rotatably mounted between the first side plate (341) and another first side plate (341), a second rotating rod (344) rotatably mounted between the second side plate (342) and another second side plate (342), and a fifth telescopic cylinder (345) fixed between the first rotating rod (343) and the second rotating rod (344).

3. A rear-mounted temporary support device for a roadheader according to claim 2, characterized in that: The first side plate (341) is fixed to the lower end of the fixing rod (8), and the second side plate (342) is installed on the left end of the small arm (5).

4. A rear-mounted temporary support device for a roadheader according to claim 1, characterized in that: The fixing rod (8) and the other fixing rod (8) are parallel to each other, and the fixing rod (8) and the third reinforcement rod (23) and the fourth reinforcement rod (24) are perpendicular to each other.

5. The rear-mounted temporary support device for a roadheader according to claim 1, characterized in that: The distance that the telescopic rod (9) moves in the fixed rod (8) is equal to the stroke of the third telescopic cylinder (15).

6. A rear-mounted temporary support device for a roadheader according to claim 1, characterized in that: The first support rod (10) and the second support rod (12) are of equal length, and the length of the first support rod (10) is greater than the distance between one outer connecting rod (21) and another outer connecting rod (21).

7. The rear-mounted temporary support device for a roadheader according to claim 1, characterized in that: The number of the first reinforcement rods (11) is not less than 3, the first rotating frame (13) is a "U"-shaped structure, and the length of the first rotating frame (13) is greater than half the length of the first reinforcement rods (11).

8. The rear-mounted temporary support device for a roadheader according to claim 1, characterized in that: The second rotating pin (26) is connected to the inner wall of the left end of the second rotating frame (28), and the output shaft of the second motor (27) is connected to the inner wall of the right end of the second rotating frame (28).

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