Explosion-proof duct piece crane

Abstract

The utility model relates to the technical field of tunnel construction, in particular to an anti-explosion duct piece crane which is characterized in that crane walking mechanisms located on crane rails are arranged on two sides of a crane walking frame, a lifting mechanism is arranged on the crane walking frame, the lifting mechanism comprises a main lifting rod and two main lifting oil cylinders, and the main lifting rod and the two main lifting oil cylinders are arranged on the main lifting rod. The front end of the main lifting rod is connected with a swing mechanism, the rear end of the main lifting rod is hinged to the crane walking frame, the two main lifting oil cylinders are located on the two sides of the main lifting rod respectively, one end of each main lifting oil cylinder is hinged to the crane walking frame, and the other end of each main lifting oil cylinder is hinged to the main lifting rod. The swing mechanism is movably connected with a mechanical grabbing and lifting head, and a material connector is arranged at the bottom of the mechanical grabbing and lifting head. According to the utility model, no system possibly generating ignition risk exists, and the pipe sheet can be safely hoisted in the tunnel with harmful combustible gas, so that the construction safety and efficiency in the tunneling process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an explosion-proof pipe segment crane. Background Art

[0002] During the tunnel construction shield machine advancement process, it may encounter areas with toxic and harmful flammable gases, such as toxic and harmful flammable gases such as methane, carbon monoxide and hydrogen sulfide in the excavation geology. Toxic and flammable gases will pose a safety threat to the tunnel under construction. Secondly, during the excavation process in a partially open tunnel, the tunnel boring machine needs to pass through geology rich in a large amount of toxic and harmful gases. Although the equipment has reduced the content of harmful flammable gases in the tunnel to the maximum extent by replacing a large amount of fresh air, some hard rock tunnel boring machines still inevitably have to face the harmful flammable gases that may continue to seep out of the tunnel. As an important part of the tunnel boring machine, the tunnel boring machine usually uses a segment crane to lift the arch, construction materials and segments. However, the existing segment crane contains components that can produce ignition factors. For example, the segment crane that uses an electric hoist to lift materials has safety hazards because the segment crane runs in the tunnel, and it cannot guarantee the safe lifting of segments in the tunnel where harmful flammable gases exist. Summary of the invention

[0003] The utility model provides an explosion-proof segment crane to solve the problem that the existing segment crane cannot ensure the safe lifting of segments in a tunnel where harmful flammable gases exist. The segment crane does not have a system that may produce an ignition risk and can safely lift segments in a tunnel where harmful flammable gases exist, thereby improving the construction safety and efficiency of the tunnel excavation process.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: an explosion-proof pipe segment crane, including a crane track and a crane traveling frame, both sides of the crane traveling frame are provided with a crane traveling mechanism located on the crane track, the crane traveling frame is provided with a lifting mechanism, the lifting mechanism includes a main lifting rod and two main lifting cylinders, the front end of the main lifting rod is connected with a swing mechanism, and the rear end is hinged to the crane traveling frame, the two main lifting cylinders are respectively located on both sides of the main lifting rod, one end of the main lifting cylinder is hinged to the crane traveling frame, and the other end is hinged to the main lifting rod.

[0005] The swing mechanism is movably connected to a mechanical grab head, and a material connection head is arranged at the bottom of the mechanical grab head. The lifting mechanism can drive the swing mechanism and the mechanical grab head to perform lifting and lowering movements, and the swing mechanism can drive the mechanical grab head to perform left and right swinging movements to compensate for the left and right deviations of the lifting points of the mechanical grab head for grabbing the pipe segments.

[0006] Furthermore, the crane traveling mechanism includes two traveling wheels, the traveling wheels are located on the crane track and are bolted to the crane traveling frame, and the crane traveling mechanism is used to realize the effect of the crane traveling frame moving on the crane track.

[0007] Furthermore, a second rotating shaft is fixedly provided on the crane traveling frame, and the lower rear end portion of the main lifting rod is sleeved on the second rotating shaft. The main lifting rod is hinged to the crane traveling frame through the second rotating shaft. Under the action of the second rotating shaft and the main lifting cylinder, the other end of the main lifting rod can achieve the effect of lifting and lowering.

[0008] Furthermore, an articulated seat is provided on both sides of the main lifting rod, a third rotating shaft is fixedly arranged on the articulated seat, a fourth rotating shaft is symmetrically arranged on the crane traveling frame, the piston rod end of the main lifting cylinder is hinged to the main lifting rod through the third rotating shaft, and the tail end of the main lifting cylinder is hinged to the crane traveling frame through the fourth rotating shaft.

[0009] Furthermore, the swing mechanism includes a fine-tuning lifting rod, a fine-tuning cylinder, a grab head connecting seat and a parallel pull rod, one end of the fine-tuning lifting rod is hinged to the main lifting rod, and the other end is rotatably connected to the grab head connecting seat, one end of the fine-tuning cylinder is hinged to the main lifting rod, and the other end is hinged to the fine-tuning lifting rod, and the two ends of the parallel pull rod are respectively hinged to the main lifting rod and the grab head connecting seat, and the fine-tuning lifting rod can be driven to swing left and right through the extension and retraction of the fine-tuning cylinder piston rod, and with the cooperation of the parallel pull rod and the grab head connecting seat, the effect of the mechanical grab head swinging left and right is achieved.

[0010] Furthermore, the front end of the main lifting rod is connected to a front end seat, a first rotating shaft is fixedly provided on the front end seat, one end of the fine-tuning lifting rod is rotatably sleeved on the first rotating shaft, the other end of the fine-tuning lifting rod is connected to a connecting seat, a sixth rotating shaft is vertically provided on the connecting seat, and the grab head connecting seat is rotatably sleeved on the sixth rotating shaft.

[0011] Furthermore, two left-leaning plates are arranged at the bottom of the front end of the main lifting rod, and two right-leaning plates are arranged at the bottom of the fine-tuning lifting rod. A fifth rotating shaft is arranged between the two left-leaning plates and the right-leaning plates. The two ends of the fine-tuning cylinder are respectively hinged to the main lifting rod and the fine-tuning lifting rod through the fifth rotating shaft. The purpose is to enable the fine-tuning cylinder to drive the fine-tuning lifting rod to swing left and right.

[0012] Furthermore, a seventh rotating shaft is fixedly provided on the grab head connecting seat, and the upper end of the mechanical grab head is rotatably sleeved on the seventh rotating shaft.

[0013] Through the above technical solution, the beneficial effects of the utility model are:

[0014] The lifting, direction correction and front and rear transportation of the pipe segments of the utility model are all controlled and driven by low-temperature hydraulic oil, and can work safely in tunnels with flammable gases, thereby realizing the lifting of the pipe segments; there is no system that may produce ignition risks, and it can ensure the safe lifting of the pipe segments in tunnels with harmful flammable gases, thereby improving the construction safety and efficiency of the tunnel excavation process.

[0015] The utility model completes the action of grabbing and releasing the pipe segment through the mechanical grabbing head, and drives the end of the main lifting rod to perform lifting movement through the main lifting cylinder, so as to achieve the effect of driving the swing mechanism and the mechanical grabbing head to perform lifting movement, thereby realizing the purpose of lifting or lowering the pipe segment.

[0016] The piston rod of the fine-tuning cylinder of the swing mechanism of the utility model can drive the fine-tuning lifting rod to swing left and right, and with the cooperation of the parallel pull rod and the grab head connecting seat, the grab head connecting seat can drive the mechanical grab head to swing left and right, so as to achieve the effect of compensating for the left and right deviation of the lifting point of the mechanical grab head grabbing the pipe segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an explosion-proof pipe segment crane of the utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of an explosion-proof pipe segment crane of the utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of an explosion-proof pipe segment crane of the utility model. Figure 3 ;

[0020] Figure 4 It is a structural schematic diagram of the swing mechanism of the utility model.

[0021] The numbers in the accompanying drawings are: 1 is the crane track, 2 is the crane traveling frame, 3 is the crane traveling mechanism, 4 is the main lifting rod, 401 is the articulated seat, 402 is the front end seat, 403 is the first rotating shaft, 404 is the left tilt plate, 5 is the second rotating shaft, 6 is the main lifting cylinder, 601 is the third rotating shaft, 7 is the fourth rotating shaft, 8 is the fine-tuning lifting rod, 801 is the right tilt plate, 802 is the fifth rotating shaft, 9 is the fine-tuning cylinder, 10 is the parallel pull rod, 11 is the connecting seat, 1101 is the sixth rotating shaft, 12 is the grab head connecting seat, 1201 is the seventh rotating shaft, 13 is the mechanical grab head, and 14 is the material connecting head. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0023] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "horizontal", "vertical" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] like Figure 1 to Figure 4 As shown, an explosion-proof segment crane comprises a crane track 1 and a crane traveling frame 2. There are two crane tracks 1, which are installed to the inner wall of the tunnel. Both sides of the crane traveling frame 2 are provided with crane traveling mechanisms 3 located on the crane track 1. The crane traveling frame 2 is provided with a lifting mechanism, which comprises a main lifting rod 4 and two main lifting cylinders 6. The main lifting rod 4 is in an "L"-shaped structure as a whole. The front end of the main lifting rod 4 is connected with a swing mechanism, and the rear end is hinged to the crane traveling frame 2. The two main lifting cylinders 6 are respectively located on both sides of the main lifting rod 4, one end of the main lifting cylinder 6 is hinged to the crane traveling frame 2, and the other end is hinged to the main lifting rod 4. In this embodiment, the piston rods of the two main lifting cylinders 6 are synchronously extended and retracted to drive the main lifting rod 4 to perform lifting and lowering movements, so that the main lifting rod 4 drives the swing mechanism and the mechanical grab head 13 to perform lifting and lowering movements, thereby achieving the purpose of the mechanical grab head 13 grabbing or releasing the segment.

[0025] The swing mechanism is movably connected with a mechanical grab head 13, and a material connection head 14 is arranged at the bottom of the mechanical grab head 13. The mechanical grab head 13 in this embodiment is the mechanical grab head in the Chinese invention patent with application publication number CN 115924714 A. The detailed structure and working principle of the mechanical grab head 13 are not described in detail here. The material connection head 14 is a lifting bolt, which is installed on the pipe segment. The pipe segment crane in this embodiment can also be used to lift the invert arch and construction materials.

[0026] The crane traveling mechanism 3 includes two traveling wheels, which are located on the crane track 1 and are bolted to the crane traveling frame 2. In this embodiment, a driving unit is also installed on the crane traveling frame 2, and a hydraulic motor is used to drive the driving wheel to rotate so that the traveling wheel moves on the crane track 1, thereby achieving the effect of the segment crane moving back and forth to lift the segment.

[0027] A second rotating shaft 5 is fixedly provided on the crane traveling frame 2, and the lower rear end of the main lifting rod 4 is sleeved on the second rotating shaft 5. The main lifting rod 4 is hinged to the crane traveling frame 2 through the second rotating shaft 5. When the front end of the main lifting rod 4 performs a lifting movement, the tail end of the main lifting rod 4 rotates on the second rotating shaft 5.

[0028] An articulated seat 401 is provided on both sides of the main lifting rod 4, and a third rotating shaft 601 is fixedly arranged on the articulated seat 401. A fourth rotating shaft 7 is symmetrically arranged on the crane traveling frame 2. The piston rod end of the main lifting cylinder 6 is hinged to the main lifting rod 4 through the third rotating shaft 601, and the tail end of the main lifting cylinder 6 is hinged to the crane traveling frame 2 through the fourth rotating shaft 7. In this embodiment, the two ends of the main lifting cylinder 5 are respectively connected to the third rotating shaft 601 and the fourth rotating shaft 7 through fisheye joints. When the two main lifting cylinders 6 drive the main lifting rod 4 to move, the two ends of the main lifting cylinder 6 rotate on the third rotating shaft 601 and the fourth rotating shaft 7 respectively.

[0029] The swing mechanism includes a fine-tuning lifting rod 8, a fine-tuning cylinder 9, a grab head connecting seat 12 and a parallel pull rod 10. One end of the fine-tuning lifting rod 8 is hinged to the main lifting rod 4, and the other end is rotatably connected to the grab head connecting seat 12. One end of the fine-tuning cylinder 9 is hinged to the main lifting rod 4, and the other end is hinged to the fine-tuning lifting rod 8. The two ends of the parallel pull rod 10 are respectively hinged to the main lifting rod 4 and the grab head connecting seat 12. The piston rod of the fine-tuning cylinder 9 performs telescopic movement, and the piston rod of the fine-tuning cylinder 9 drives the fine-tuning lifting rod 8 to swing left and right. At the same time, the parallel pull rod 10 moves relative to each other and pulls the grab head connecting seat 12 to rotate, thereby achieving the purpose of adjusting the position of the mechanical grab head 13 to ensure that the adjusted mechanical grab head 13 can grab the material connecting head.

[0030] The front end of the main lifting rod 4 is connected to a front end seat 402, and a first rotating shaft 403 is fixedly arranged on the front end seat 402. One end of the fine-tuning lifting rod 8 is rotatably sleeved on the first rotating shaft 403, and its purpose is to ensure that the fine-tuning lifting rod 8 can rotate relative to the main lifting rod 4. The other end of the fine-tuning lifting rod 8 is connected to a connecting seat 11, and a sixth rotating shaft 1101 is vertically arranged on the connecting seat 11. The grab head connecting seat 12 is rotatably sleeved on the sixth rotating shaft 1101, and its purpose is to enable the parallel pull rod 10 to pull the grab head connecting seat 12 to rotate.

[0031] Two left-leaning plates 404 are arranged at the bottom of the front end of the main lifting rod 4, and two right-leaning plates 801 are arranged at the bottom of the fine-tuning lifting rod 8. A fifth rotating shaft 802 is arranged between the two left-leaning plates 404 and the right-leaning plates 801, and both ends of the fine-tuning cylinder 9 are hinged to the main lifting rod 4 and the fine-tuning lifting rod 8 through the fifth rotating shaft 802, respectively.

[0032] The seventh rotating shaft 1201 is fixedly provided on the grab head connecting seat 12, and the upper end of the mechanical grab head 13 is rotatably sleeved on the seventh rotating shaft 1201, so that the mechanical grab head 13 can rotate.

[0033] The working principle of the utility model is as follows: when the segment crane moves to the segment placement position, the main lifting cylinder 6 is opened, the piston rod of the main lifting cylinder 6 extends, driving the end of the main lifting rod 4 connected to the swing mechanism to descend, and the rear end of the main lifting rod 4 rotates on the second rotating shaft 5. When the swing mechanism drives the mechanical grab head 13 to descend to the position of the material connection head 14 on the segment, the fine-tuning cylinder 9 is opened, the piston rod of the fine-tuning cylinder 9 performs a telescopic movement, and the piston rod of the fine-tuning cylinder 9 drives the fine-tuning lifting rod 8 to swing left and right, and at the same time the parallel pull rod 10 is relatively The mechanical grab head 13 moves and pulls the grab head connection seat 12 to rotate. The grab head connection seat 12 drives the mechanical grab head 13 to move. When the mechanical grab head 13 corresponds to the material connection head 14, the mechanical grab head 13 is used to grab the material connection head 14, and then the piston rod of the main lifting cylinder 6 is retracted to drive the main lifting rod 4 to connect one end of the swing mechanism to rise, so as to drive the swing mechanism and the mechanical grab head 13 to rise, and the material connection head 14 drives the pipe segment to lift, and then the pipe segment crane can achieve the effect of lifting the pipe segment through the crane walking mechanism 3 and the drive unit. It should be noted that because the lifting, correction direction, front and rear transportation and drive unit of the pipe segment of the utility model are all controlled and driven by low-temperature hydraulic oil, the pipe segment crane can safely work in a tunnel with flammable gas.

[0034] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, all equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. An explosion-proof segment crane, comprising a crane track (1) and a crane traveling frame (2), characterized in that: Both sides of the crane traveling frame (2) are provided with a crane traveling mechanism (3) located on the crane track (1); the crane traveling frame (2) is provided with a lifting mechanism, the lifting mechanism comprising a main lifting rod (4) and two main lifting cylinders (6); the front end of the main lifting rod (4) is connected to a swing mechanism, and the rear end is hinged to the crane traveling frame (2); the two main lifting cylinders (6) are respectively located on both sides of the main lifting rod (4); one end of the main lifting cylinder (6) is hinged to the crane traveling frame (2), and the other end is hinged to the main lifting rod (4); The swing mechanism is movably connected to a mechanical grabbing head (13), and a material connecting head (14) is provided at the bottom of the mechanical grabbing head (13).

2. The explosion-proof segment crane according to claim 1, characterized in that: The crane traveling mechanism (3) comprises two traveling wheels, wherein the traveling wheels are located on the crane track (1) and are bolted to the crane traveling frame (2).

3. The explosion-proof segment crane according to claim 1, characterized in that: A second rotating shaft (5) is fixedly arranged on the crane traveling frame (2), a lower rear end portion of the main lifting rod (4) is sleeved on the second rotating shaft (5), and the main lifting rod (4) is hingedly connected to the crane traveling frame (2) via the second rotating shaft (5).

4. The explosion-proof segment crane according to claim 1, characterized in that: Both sides of the main lifting rod (4) are provided with an articulated seat (401), a third rotating shaft (601) is fixedly arranged on the articulated seat (401), a fourth rotating shaft (7) is symmetrically arranged on the crane traveling frame (2), the piston rod end of the main lifting cylinder (6) is hinged to the main lifting rod (4) through the third rotating shaft (601), and the tail end of the main lifting cylinder (6) is hinged to the crane traveling frame (2) through the fourth rotating shaft (7).

5. The explosion-proof segment crane according to claim 1, characterized in that: The swing mechanism comprises a fine-tuning lifting rod (8), a fine-tuning oil cylinder (9), a grab head connecting seat (12) and a parallel pull rod (10); one end of the fine-tuning lifting rod (8) is hinged to the main lifting rod (4), and the other end is rotatably connected to the grab head connecting seat (12); one end of the fine-tuning oil cylinder (9) is hinged to the main lifting rod (4), and the other end is hinged to the fine-tuning lifting rod (8); and both ends of the parallel pull rod (10) are respectively hinged to the main lifting rod (4) and the grab head connecting seat (12).

6. The explosion-proof segment crane according to claim 5, characterized in that: The front end of the main lifting rod (4) is connected to a front end seat (402), a first rotating shaft (403) is fixedly arranged on the front end seat (402), one end of the fine-tuning lifting rod (8) is rotatably sleeved on the first rotating shaft (403), the other end of the fine-tuning lifting rod (8) is connected to a connecting seat (11), a sixth rotating shaft (1101) is vertically arranged on the connecting seat (11), and the grab head connecting seat (12) is rotatably sleeved on the sixth rotating shaft (1101).

7. The explosion-proof segment crane according to claim 6, characterized in that: Two left-leaning plates (404) are arranged at the bottom of the front end of the main lifting rod (4), and two right-leaning plates (801) are arranged at the bottom of the fine-tuning lifting rod (8). A fifth rotating shaft (802) is arranged between the two left-leaning plates (404) and the right-leaning plates (801). The two ends of the fine-tuning oil cylinder (9) are respectively hinged to the main lifting rod (4) and the fine-tuning lifting rod (8) through the fifth rotating shaft (802).

8. The explosion-proof segment crane according to claim 6, characterized in that: A seventh rotating shaft (1201) is fixedly arranged on the grab head connecting seat (12), and the upper end of the mechanical grab head (13) is rotatably sleeved on the seventh rotating shaft (1201).

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