An excavating and blasting machine and an anti-blasting ring support system thereof

Abstract

The application discloses a tunneling and blasting machine and an anti-blasting ring supporting system thereof, and relates to the technical field of tunneling equipment. The anti-blasting ring supporting system of the tunneling and blasting machine comprises a cutter head, a movable part and a manipulator. The cutter head comprises a supporting part, a center cutter head and an annular cutter head with a through hole, the center cutter head is sleeved in the through hole, and the supporting part is used for driving the center cutter head to move axially. The movable part is slidably sleeved on the peripheral surface of the supporting part, and the movable part can rotate relative to the supporting part. The manipulator comprises a telescopic jacking device and a pickup part, the jacking device is fixed to the movable part, the pickup part is fixed to the extending end of the jacking device, and the pickup part is used for clamping the anti-blasting ring. The anti-blasting ring supporting system supports the rock-burst area in front of the annular cutter head, can realize advanced support, effectively improves the safety of the excavated roadway, and protects the matched equipment and the operating personnel.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring equipment technology, and more specifically, to an anti-blast ring support system for a tunnel boring and blasting machine. Furthermore, this invention also relates to a tunnel boring and blasting machine including the aforementioned anti-blast ring support system. Background Technology

[0002] A tunnel boring machine (TBM) is a large piece of equipment specifically designed for excavating tunnels in hard rock. It has functions such as excavation, muck removal, and support, and integrates tunnel excavation and drilling and blasting, blast-resistant rings and support, aggregate processing, and green construction.

[0003] During the construction process of the tunneling and blasting machine, the initial stress state of the surrounding rock in the original strata will inevitably be disrupted, resulting in stress redistribution in the surrounding rock. Rock bursts may occur during the tunneling process, increasing the danger to the workers and making it difficult to protect the main equipment and supporting facilities.

[0004] Existing tunnel boring equipment support systems typically consist of steel arch frame assembly systems, anchor drilling rig systems, and shotcrete systems. They achieve initial tunnel support through processes such as assembling steel ring beams, installing anchor bolts, and shotcreting, which can control the deformation of the surrounding rock and prevent its destruction to a certain extent. However, they cannot effectively handle rockburst situations.

[0005] In conclusion, how to avoid the damage caused by rockbursts to construction personnel, main equipment, and supporting facilities is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of this invention is to provide an anti-blast ring support system for a tunneling and blasting machine, which can achieve advanced support and effectively ensure the safety of construction personnel, main equipment and supporting facilities.

[0007] Another object of the present invention is to provide a tunneling and blasting machine including the above-described blast-resistant ring support system.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An blast-resistant ring support system for a tunneling blasting machine includes:

[0010] The cutter head includes a support member, a central cutter head, and an annular cutter head with a through hole. The central cutter head is sleeved in the through hole, and the support member is used to drive the central cutter head to move axially.

[0011] The movable component is slidably sleeved on the circumferential surface of the support component, and the movable component is rotatable relative to the support component;

[0012] The robotic arm includes a retractable lifting device and a picking part. The lifting device is fixed to the movable part, and the picking part is fixed to the extended end of the lifting device. The picking part is used to clamp the explosion-proof ring.

[0013] Preferably, the movable component includes a sliding component and a rotating component. The sliding component is slidably sleeved on the circumferential surface of the support component, and the rotating component is rotatably sleeved on the sliding component. The lifting device is fixed to the rotating component.

[0014] Preferably, the movable component further includes a gear ring, a gear, and a power device. The gear ring is fixed to the rotating component, the gear is fixed to the sliding component, the gear meshes with the gear ring, and the power device is used to drive the gear to rotate.

[0015] Preferably, the movable component further includes a hydraulic cylinder for driving the sliding component to slide along the support component.

[0016] Preferably, there are two lifting devices, and the two lifting devices are symmetrically arranged about the axis of symmetry of the rotating member.

[0017] Preferably, the blast-resistant ring has an arch-shaped structure, and the end of the blast-resistant ring is provided with a connecting portion for connecting with the adjacent blast-resistant ring.

[0018] Preferably, the connecting part is a threaded hole, and a bolt is provided in the threaded hole.

[0019] Preferably, the robotic arm further includes a fine-tuning mechanism for adjusting the position of the explosion-proof ring.

[0020] A tunneling and blasting machine, including the blast-resistant ring support system of the tunneling and blasting machine described above.

[0021] The blast-resistant ring support system for a tunneling and blasting machine provided by this invention has a split cutterhead structure, including an annular cutterhead with a through hole and a central cutterhead sleeved in the through hole. The central cutterhead can move axially under the drive of the support member. The movable part is sleeved on the circumference of the support member and can rotate relative to the support member. The lifting device is fixed to the movable part, so that the lifting device moves together with the movable part. The extended end of the telescopic lifting device is fixed with a pickup part.

[0022] In operation, the annular cutterhead first widens the tunnel at the corresponding location. After widening, the annular cutterhead retracts a certain distance with the machine, leaving sufficient space for the blast-resistant ring support operation. The central cutterhead extends a certain distance under the drive of the support components, and the pickup unit picks up a blast-resistant ring. Then, the movable component moves on the support components, moving the blast-resistant ring to a preset position. The movable component rotates, rotating the blast-resistant ring to the preset position. The lifting device of the robotic arm extends, pressing the blast-resistant ring tightly against the widened tunnel wall. This pre-support operation is completed in front of the annular cutterhead, improving the safety of the tunnel and effectively protecting the supporting equipment and personnel. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a specific embodiment provided by the present invention;

[0025] Figure 2 This is a front view of the cutter head according to a specific embodiment of the present invention;

[0026] Figure 3 This is a side view of the cutter head according to a specific embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the moving parts and the robotic arm provided in a specific embodiment of the present invention.

[0028] Figures 1-4 In the accompanying drawings, the reference numerals include:

[0029] 1 is the cutter head, 11 is the support component, 12 is the central cutter head, 13 is the annular cutter head, 2 is the movable component, 21 is the sliding component, 22 is the rotating component, 3 is the robotic arm, 31 is the lifting device, 32 is the picking unit, and 4 is the explosion-proof ring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The core of this invention is to provide an anti-blast ring support system for a tunneling and blasting machine, achieving advanced support and effectively ensuring the safety of construction personnel, the main equipment, and supporting facilities. Another core aspect of this invention is to provide a tunneling and blasting machine that includes the aforementioned anti-blast ring support system.

[0032] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the structure of a specific embodiment provided by the present invention; Figure 2 This is a front view of the cutter head according to a specific embodiment of the present invention; Figure 3 This is a side view of the cutter head according to a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the moving parts and the robotic arm provided in a specific embodiment of the present invention.

[0033] The present invention provides an anti-blast ring support system for a tunneling and blasting machine, comprising a cutterhead 1, a movable component 2, and a robotic arm 3.

[0034] The cutter head 1 includes a support member 11, a central cutter head 12, and an annular cutter head 13 with a through hole. The central cutter head 12 is fitted into the through hole, and the support member 11 is used to drive the central cutter head 12 to move axially. The movable member 2 is slidably fitted onto the circumferential surface of the support member 11, and the movable member 2 can rotate relative to the support member 11. The robot arm 3 includes a telescopic lifting device 31 and a picking part 32. The lifting device 31 is fixed to the movable member 2, and the picking part 32 is fixed to the extended end of the lifting device 31. The picking part 32 is used to clamp the explosion-proof ring 4.

[0035] Specifically, the cutterhead 1 is a split structure, including an annular cutterhead 13 with a through hole and a central cutterhead 12 sleeved in the through hole. The central cutterhead 12 can move axially under the drive of the support member 11. When support operation is required, the central cutterhead 12 extends out and when support is not required, the central cutterhead 12 retracts into the shield body. It should be noted that the support member 11 can be driven by a telescopic cylinder or any other device, as long as it can provide sufficient support and propulsion force for the central cutterhead 12.

[0036] The movable part 2 is sleeved on the circumference of the support part 11, which serves as a guide and support. It can move freely along the tunnel centerline and can rotate relative to the support part 11. The lifting device 31 is fixed to the movable part 2, so the lifting device 31 moves together with the movable part 2. The lifting device 31 can be a hydraulic cylinder-driven telescopic arm or any other device that can extend and retract. The extended end of the lifting device 31 is fixed with a picking part 32. It should be noted that the type of the picking part is not limited. It can be any tooling used for picking, such as a gripper or suction cup, as long as it can lift the explosion-proof ring 4 and stably transfer the explosion-proof ring 4 with the movement of the lifting device 31. Preferably, a hydraulic gripper is used, which has a simple structure, low cost, easy transportation of raw materials, and can bear huge weight.

[0037] In operation, the annular cutterhead 13 is first used to enlarge the tunnel at the corresponding location. After the enlargement is completed, the annular cutterhead 13 retracts a certain distance with the whole machine, leaving enough space for the support operation of the blast-resistant ring 4. The central cutterhead 12 extends a certain distance under the drive of the support member 11, and the picking part 32 picks up a blast-resistant ring 4. Then, the movable part 2 moves on the support member 11 to move the blast-resistant ring 4 to the preset position. The movable part 2 rotates to rotate the blast-resistant ring 4 to the preset position, and the lifting device 31 of the manipulator 3 extends to press the blast-resistant ring 4 tightly against the enlarged tunnel wall. The blast-resistant ring 4 support system supports the rockburst area in front of the annular cutterhead 13, which can achieve advanced support in areas with rockburst risk, effectively improving the safety of the tunnel and protecting the supporting equipment and workers.

[0038] Based on the above embodiments, the movable member 2 includes a sliding member 21 and a rotating member 22. The sliding member 21 is slidably sleeved on the circumferential surface of the support member 11, and the rotating member 22 is rotatably sleeved on the sliding member 21. The lifting device 31 is fixed to the rotating member 22.

[0039] Specifically, the movable component 2 includes a sliding component 21 that can slide freely along the support component 11 and a rotating component 22 that can rotate relative to the sliding component 21. The sliding component 21 is sleeved on the circumferential surface of the support component 11 and moves freely along the tunnel centerline with the support component 11. The rotating component 22 is sleeved with the sliding component 21 and can rotate. At this time, the sliding component 21 plays the role of restricting the rotating component 22 and preventing the rotating component 22 from derailing when rotating.

[0040] In use, the lifting device 31 slides to a preset position along with the sliding member 21 and rotates to a preset position along with the rotating member 22, thereby moving the blast ring 4 to the predetermined position by the picking unit 32. The sliding member 21 drives the blast ring 4 to make linear motion, and the rotating member 22 drives the blast ring 4 to make rotational motion. The two different movements of the blast ring 4 are controlled by different devices, which facilitates the adjustment of the position and angle of the blast ring 4, and the position adjustment and angle adjustment do not affect each other.

[0041] Optionally, the sliding member 21 and the rotating member 22 can be configured such that the sliding member 21 is slidably mounted on the support member 11, the fixed part of the rotating member 22 is connected to the sliding member 21, so that the sliding member 21 drives the moving member 22 to move back and forth, the rotating part of the rotating member 22 and the fixed part can rotate relative to each other, the lifting device 31 is fixed to the rotating part, and the rotating movement of the rotating member 22 drives the lifting device 31 to rotate.

[0042] Alternatively, the fixed part of the rotating part 22 can be directly set on the circumferential surface of the support 11, the rotating part of the rotating part 22 can rotate relative to the fixed part, the sliding part 21 is set on the rotating part and can move linearly along the support 11 relative to the rotating part, and the lifting device is set on the sliding part 21.

[0043] Based on the above embodiment, the movable component 2 also includes a gear ring, a gear, and a power device. The gear ring is fixed to the rotating component 22, and the gear is fixed to the sliding component 21. The gear meshes with the gear ring, and the power device is used to drive the gear to rotate. In use, the gear is driven to rotate by a hydraulic motor or electric motor, etc. The gear meshes with the gear ring, causing it to rotate. Therefore, the rotating component 22, which is fixed to the gear ring, rotates accordingly, realizing the angle adjustment of the anti-explosion ring 4. The gear meshing transmission ratio is stable and highly accurate, and the compact structure is beneficial for operation in a limited space.

[0044] Of course, any other transmission device can be used here, as long as it can drive the rotating part 22 to rotate.

[0045] Based on the above embodiments, the movable component 2 also includes a hydraulic cylinder, which is used to drive the sliding component 21 to slide along the support component 11.

[0046] Specifically, the cylinder rod extends and retracts, enabling the movement of the sliding member 21. In use, after the sliding member 21 slides the explosion-proof ring 4 along the support member 11 to a preset position, the cylinder stops supplying oil, thus locking the sliding member 21 and preventing the moving member 2 from moving arbitrarily and causing inaccurate installation of the explosion-proof ring 4. Of course, any other device can be used here, such as a self-locking hydraulic cylinder, as long as it can lock the sliding member 21.

[0047] Based on any of the above embodiments, the number of lifting devices 31 is two, and the two lifting devices 31 are symmetrically arranged about the axis of symmetry of the rotating member 22.

[0048] Specifically, such as Figure 4 As shown, two lifting devices 31 are provided, and the two lifting devices 31 are symmetrically arranged about the axis of symmetry of the rotating member 22, so that the distance between the two lifting devices 31 remains unchanged during the extension and retraction process; the extended ends of the two lifting devices 31 are fixed with corresponding picking parts 32, so that when the picking parts 32 pick up the explosion-proof ring 4, the two picking parts 32 pick up the explosion-proof ring 4 at different positions, so as to avoid the explosion-proof ring 4 being deformed or damaged during the transportation process after being picked up by the picking parts 32, and the explosion-proof ring 4 can remain stable during the installation process, which is conducive to accurate installation.

[0049] Based on any of the above embodiments, the blast-resistant ring 4 has an arch-shaped structure, and the end of the blast-resistant ring 4 is provided with a connecting part for connecting with the adjacent blast-resistant ring 4.

[0050] Specifically, such as Figure 4 As shown, the blast-resistant ring 4 has an arch-shaped structure, and a connecting part is provided at its end to connect with the adjacent blast-resistant ring 4.

[0051] In use, the picking unit 32 picks up one blast-resistant ring 4, then the movable part 2 moves on the support 11 to move the blast-resistant ring 4 to a preset position. The movable part 2 rotates to rotate the blast-resistant ring 4 to the preset position, and the lifting device 31 of the manipulator 3 extends to press the blast-resistant ring 4 tightly against the excavated tunnel wall. After fixing the previous blast-resistant ring 4, the manipulator 3 is controlled to retract, and the movable part 2 moves to the corresponding position to pick up the next blast-resistant ring 4. After picking up one blast-resistant ring 4, the above actions are repeated to fix the end of the picked blast-resistant ring 4 to the first fixed blast-resistant ring 4. The above steps are repeated until the blast-resistant rings 4 form a complete ring. When the two ends of the last blast-resistant ring 4 cannot be connected, they can be fixed by welding, finally completing the advance support of a complete ring of blast-resistant rings 4. In the narrow tunnels of the tunnel, it is inconvenient to transport the complete ring of blast-resistant rings 4. Using arch-shaped blast-resistant rings 4 facilitates transportation, and during support operations, using arch-shaped blast-resistant rings 4 is beneficial for transporting them to the preset position.

[0052] Furthermore, by setting two lifting devices 31 with the distance between them being the chord length of the blast-resistant ring 4, the picking parts 32 fixed at the extended ends of the two lifting devices 31 can pick up both ends of the arch-shaped blast-resistant ring 4 respectively, making the transfer process more stable and avoiding deformation or damage to the blast-resistant ring 4.

[0053] It should be noted that the blast-resistant ring 4 is made of high-strength steel to effectively resist rockbursts.

[0054] Based on the above embodiment, the connecting part is a threaded hole, and a bolt is provided in the threaded hole. Preferably, the ends of two adjacent blast-resistant rings 4 are fixed by high-strength bolts to enhance the connection end's resistance to rockbursts. It should be noted that the number of threaded holes and the arrangement of each threaded hole are not limited, as long as the connection strength of adjacent blast-resistant rings 4 is satisfied.

[0055] Furthermore, when multiple blast-resistant rings 4 are assembled into a complete ring, the last blast-resistant ring 4 is fixed to the adjacent blast-resistant ring 4 by welding to avoid the situation where the threaded hole of the last blast-resistant ring 4 cannot be aligned with the threaded hole of its adjacent blast-resistant ring 4.

[0056] Optionally, when forming a complete ring, other structures such as adhesives can be used for fixed connection.

[0057] Based on any of the above embodiments, the robotic arm 3 further includes a fine-tuning mechanism for adjusting the position of the blast ring 4. In use, the position of the blast ring 4 is slightly adjusted by the angle fine-tuning mechanism so that the end of the blast ring 4 is aligned with the threaded hole at the end of the adjacent blast ring 4, thereby allowing the ends of the two adjacent blast rings 4 to be easily fixed by bolts.

[0058] It should be noted that the type of fine-tuning mechanism is not limited here, as long as it can achieve fine-tuning of the threaded hole of the explosion-proof ring 4.

[0059] In addition to the blast-resistant ring support system of the excavator and blaster mentioned above, the present invention also provides an excavator and blaster that includes the blast-resistant ring support system disclosed in the above embodiments. For the structure of other parts of the excavator and blaster, please refer to the prior art, which will not be repeated here.

[0060] It should be noted that the terms "upper surface", "lower surface", "top", "bottom" and the directional terms "up", "down", "left", "right" mentioned above are defined based on the accompanying drawings in the instruction manual.

[0061] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0062] The present invention has been described in detail above as a blasting excavator and its blast-resistant ring support system. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An anti-blast ring support system for a tunneling blasting machine, characterized in that, include: The cutter head (1) includes a support member (11), a central cutter head (12) and an annular cutter head (13) with a through hole. The central cutter head (12) is sleeved in the through hole, and the support member (11) is used to drive the central cutter head (12) to move axially. The movable part (2) is slidably sleeved on the circumferential surface of the support (11), and the movable part (2) can rotate relative to the support (11); The robotic arm (3) includes a retractable lifting device (31) and a picking part (32). The lifting device (31) is fixed to the movable part (2), and the picking part (32) is fixed to the extended end of the lifting device (31). The picking part (32) is used to pick up the explosion-proof ring (4). The central cutterhead (12) can extend a preset distance relative to the annular cutterhead (13), so that the explosion-proof ring (4) can provide advance support in front of the annular cutterhead (13). In use, the annular cutterhead (13) is first used to enlarge the tunnel at the corresponding position. After the enlargement is completed, the annular cutterhead (13) moves back a certain distance with the whole machine to leave enough space for the support operation of the blast-resistant ring (4). The central cutterhead (12) extends a certain distance under the drive of the support member (11). The picking part (32) picks up one of the blast-resistant rings (4). Then the movable part (2) moves on the support member (11) to move the blast-resistant ring (4) to the preset position. The movable part (2) rotates to rotate the blast-resistant ring (4) to the preset position. The lifting device (31) extends to press the blast-resistant ring (4) tightly against the wall of the enlarged tunnel.

2. The blast-resistant ring support system for a tunneling and blasting machine according to claim 1, characterized in that, The movable component (2) includes a sliding component (21) and a rotating component (22). The sliding component (21) is slidably sleeved on the circumferential surface of the support component (11), and the rotating component (22) is rotatably sleeved on the sliding component (21). The lifting device (31) is fixed to the rotating component (22).

3. The blast-resistant ring support system for a tunneling and blasting machine according to claim 2, characterized in that, The movable part (2) also includes a gear ring, a gear and a power device. The gear ring is fixed to the rotating part (22), the gear is fixed to the sliding part (21), the gear meshes with the gear ring, and the power device is used to drive the gear to rotate.

4. The blast-resistant ring support system for a tunneling and blasting machine according to claim 2, characterized in that, The movable component (2) also includes a hydraulic cylinder, which is used to drive the sliding component (21) to slide along the support component (11).

5. The blast-resistant ring support system for a tunneling and blasting machine according to any one of claims 2 to 4, characterized in that, The number of the lifting devices (31) is two, and the two lifting devices (31) are symmetrically arranged about the axis of symmetry of the rotating member (22).

6. The blast-resistant ring support system for a tunneling and blasting machine according to any one of claims 1 to 4, characterized in that, The blast-resistant ring (4) has an arch-shaped structure, and the end of the blast-resistant ring (4) is provided with a connecting part for connecting with the adjacent blast-resistant ring (4).

7. The blast-resistant ring support system for a tunneling and blasting machine according to claim 6, characterized in that, The connecting part is a threaded hole, and a bolt is provided in the threaded hole.

8. The blast-resistant ring support system for a tunneling and blasting machine according to any one of claims 1 to 4, characterized in that, The robotic arm (3) also includes a fine-tuning mechanism for adjusting the position of the explosion-proof ring (4).

9. A tunneling and blasting machine, characterized in that, Including the blast-resistant ring support system for the excavator as described in any one of claims 1 to 8.

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