A rock drilling rig

Abstract

This utility model discloses a trestle bridge device with rock drilling function, including a main bridge and a rock drilling mechanism. The main bridge is provided with a passageway for vehicles to pass through. At least one side of the passageway is provided with a longitudinally movable component, which is connected to the rock drilling mechanism in a one-to-one correspondence. This utility model integrates the rock drilling mechanism onto the main bridge of the trestle bridge through the longitudinally movable component, and the movable component is located on the lateral side of the passageway. When the rock drilling mechanism is drilling blast holes on the end face of the invert to be excavated, muck removal vehicles or other construction equipment can pass normally through the passageway of the main bridge without interference, which is conducive to improving construction efficiency. The main bridge can provide a stable, safe, and efficient mobile working platform for the rock drilling mechanism, and can be quickly deployed and transferred to adapt to the limited space and frequent process changes in the tunnel, thereby effectively shortening the single work cycle time, ensuring the safety of construction personnel, and also helping to improve the quality of drilling and blasting.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering machinery technology, and in particular to a trestle device with rock drilling function. Background Technology

[0002] During tunnel construction using the bench method, the invert needs to be constructed promptly to ensure structural stability and the formation of a closed pressure ring. Before constructing the invert, excavation of the soil and rock at the invert location is necessary. Currently, this excavation commonly employs the drill-and-blast method, which involves drilling a specific arrangement of blast holes on the invert working face, followed by a series of procedures including charging, blasting, and debris removal. Similarly, when the design requires the laying of deep-buried water trenches within the tunnel, the excavation of these trenches also faces similar drill-and-blast requirements. Currently, the main methods for drilling blast holes for tunnel inverts and deep-buried water trenches are as follows:

[0003] 1. Manual Handheld Drilling: This is the most traditional and common method. Workers stand on uncleaned or partially cleared rock piles and operate heavy handheld pneumatic or hydraulic rock drills. This method presents serious safety hazards: the working environment is harsh, the site is uneven, and the rock debris is slippery, easily causing personnel to slip, fall, or suffer mechanical injuries. Simultaneously, the dust and noise generated during drilling pose significant health risks to operators. Furthermore, this method is inefficient, requires a large workforce, is labor-intensive, and makes it difficult to guarantee drilling accuracy (mainly including hole depth and direction), affecting subsequent blasting effects and excavation profile quality. It has become one of the key bottlenecks restricting the efficiency of tunnel excavation cycle operations.

[0004] 2. Utilization of large rock drilling rigs: While fully hydraulic rock drilling rigs are highly efficient and safe for drilling at the tunnel face, their large size and complex structure present significant operational blind spots and flexibility limitations when used for drilling invert sections, as the rock and soil at the bottom of the tunnel cross-section are located in the invert area. The rig's boom cannot effectively cover areas near the initial support section or tunnel corners, and a large amount of backfilled and compacted soil is typically required to provide a stable support platform for the rig, a time-consuming and labor-intensive process. After drilling, the backfilled soil must be excavated again, resulting in repetitive work and resource waste. Furthermore, when using rock drilling rigs for invert drilling or deep-buried trench drilling, the front face cannot be cleared for muck removal, severely slowing down the construction progress.

[0005] 3. Temporary scaffolding platform operation: Some construction companies choose to erect steel pipe scaffolding platforms to provide working surfaces for personnel and drilling rigs. However, erecting and dismantling scaffolding itself requires a significant investment of manpower and time, resulting in low efficiency. Furthermore, the stability and safety of temporary scaffolding platforms cannot be guaranteed, and they are prone to instability when subjected to the strong impacts and vibrations of drilling rigs. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a trestle bridge that can take into account both rock drilling and vehicle passage and muck removal, which is conducive to improving construction efficiency and safety.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A rock-drilling trestle device includes a main bridge and a rock-drilling mechanism. The main bridge is provided with a passageway for vehicles to pass through. At least one side of the passageway is provided with a longitudinally movable component, which is connected to the rock-drilling mechanism in a one-to-one correspondence.

[0009] As a further improvement to the above technical solution: the main bridge includes two rows of longitudinal beams and a crossbeam disposed between the two rows of longitudinal beams, the passage is disposed on the crossbeam, the longitudinal beams are hollow structures, and the longitudinal moving member is disposed inside the longitudinal beams.

[0010] As a further improvement to the above technical solution: a guide structure is provided between the longitudinal moving member and the inner wall of the longitudinal beam.

[0011] As a further improvement to the above technical solution: the main bridge is provided with a longitudinal movement drive for driving the longitudinal movement of the longitudinal movement member.

[0012] As a further improvement to the above technical solution: the longitudinal movement drive component is a chain.

[0013] As a further improvement to the above technical solution: the rock drilling mechanism includes a swing arm that can swing laterally, and the swing arm is connected to the longitudinal moving member.

[0014] As a further improvement to the above technical solution: the front end of the main bridge is provided with a longitudinally movable front approach bridge.

[0015] As a further improvement to the above technical solution: the main bridge is provided with a support wheel set for supporting the front approach bridge.

[0016] As a further improvement to the above technical solution: the main bridge is equipped with a longitudinally movable trestle trolley, and both the front end of the main bridge and the trestle trolley are equipped with telescopic outriggers, and the rear end of the main bridge is also equipped with a walking mechanism.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] This utility model discloses a rock-drilling trestle device that integrates the rock-drilling mechanism onto the main bridge of the trestle via a longitudinal moving member. The moving member is located on the lateral side of the passageway. When the rock-drilling mechanism is drilling blast holes at the end face of the invert to be excavated, muck removal vehicles or other construction equipment can pass normally through the passageway of the main bridge without interference, thus improving construction efficiency. The main bridge provides the rock-drilling mechanism with a stable, safe, and efficient mobile working platform, enabling rapid deployment and relocation to adapt to the limited space and frequent process changes within the tunnel. This effectively shortens the time of a single work cycle, ensures the safety of construction personnel, and also helps improve the quality of drilling and blasting.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure in the initial rock-drilling state of this utility model.

[0021] Figure 2 This is a top view of the structure of the present invention in the rock drilling state, wherein (a) is rock drilling on the side of the inverted arch, and (b) is rock drilling in the middle of the inverted arch after lateral swing.

[0022] Figure 3 yes Figure 1 AA view.

[0023] Figure 4 yes Figure 1 BB view.

[0024] Figure 5 This is a schematic diagram of the main structure of the present invention in the state of excavation of a 4-meter inverted arch.

[0025] Figure 6 This is a schematic diagram of the main structure of the present invention in the state of excavation of an 8-meter inverted arch.

[0026] Figure 7 This is a schematic diagram of the main structure of the present invention in the state of excavation of a 12-meter inverted arch.

[0027] Figure 8 This is a schematic diagram of the rock drilling location for the inverted arch blast holes.

[0028] The labels in the diagram represent:

[0029] 1. Main bridge; 11. Passage section; 12. Longitudinal beam; 13. Crossbeam; 14. Telescopic outrigger; 15. Support wheel assembly; 2. Rock drilling mechanism; 21. Swing arm; 3. Longitudinal movement component; 31. Longitudinal movement drive component; 4. Guide structure; 5. Trestle trolley; 6. Traveling mechanism; 7. Front approach bridge. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 7 As shown, the rock-drilling trestle equipment of this embodiment includes a main bridge 1 and a rock-drilling mechanism 2. The main bridge 1 is provided with a passageway 11 for vehicles to pass through. Both sides of the passageway 11 are provided with longitudinally movable sliding members 3, which are connected to the rock-drilling mechanisms 2 in a one-to-one correspondence. Of course, in other embodiments, the longitudinally movable members 3 can be provided only on either side of the passageway 11. The disadvantage is that, due to the reduction in the number of rock-drilling mechanisms 2, the rock-drilling coverage and efficiency are reduced.

[0035] In this context, longitudinal refers to the length direction of the tunnel, or the front-to-back direction, with the end of the tunnel being excavated being the front. Correspondingly, transverse refers to the width direction of the tunnel.

[0036] In this embodiment, the rock-drilling trestle equipment integrates the rock-drilling mechanism 2 onto the main bridge 1 of the trestle via a longitudinal sliding member 3. The longitudinal sliding member 2 is located on the lateral side of the passageway 11. When the rock-drilling mechanism 2 performs blast hole drilling on the end face of the invert to be excavated (the specific location for blast hole drilling on the end face of the invert to be excavated is as follows...), Figure 8 As shown), slag removal vehicles or other construction equipment can pass normally through the main bridge's access road, as detailed below. Figure 1 , Figure 5 and Figure 6 As shown, the two structures do not interfere with each other, which is conducive to improving construction efficiency. The main bridge 1 can provide a stable, safe, and efficient mobile working platform for the rock drilling mechanism 2, and can be quickly deployed and transferred to adapt to the limited space and frequent process changes within the tunnel, thereby effectively shortening the time of a single work cycle, ensuring the safety of construction personnel, and also helping to improve the quality of drilling and blasting.

[0037] After all the blasting holes for a construction section (in this embodiment, each construction section of the rock drilling mechanism 2 is 4 meters long) are completed, when charging and blasting, the longitudinal moving part 3 drives the rock drilling mechanism 2 to retreat to a safe area, specifically inside the longitudinal beam 12. At the same time, the front approach bridge 7 also needs to retreat to a safe area. Figure 7 As shown, this avoids damage caused by debris generated during blasting, resulting in good safety and reliability.

[0038] See details Figure 3 and Figure 4 In this embodiment, the main bridge 1 includes two rows of longitudinal beams 12 and a crossbeam 13 located between the two rows of longitudinal beams 12. The structure is simple, reliable, and has a strong load-bearing capacity, making it suitable for tunnels with a large width. The passageway 11 is located on the crossbeam 13. The longitudinal beams 12 are hollow structures, and the longitudinal sliding member 3 is located inside the longitudinal beams 12. Vehicles and other construction equipment can pass normally on the crossbeam 13 without obstruction. Furthermore, the longitudinal sliding member 3 does not occupy additional space, making the overall structure of the trestle bridge simpler, more compact, and more rationally laid out. Preferably, the longitudinal sliding member 3 adopts a hollow structure, which helps reduce its self-weight. The cross-sections of the longitudinal beams 12 and the longitudinal sliding member 3 can be rectangular or square, and ribs are spaced along the longitudinal direction to improve strength and reduce deformation.

[0039] See details Figure 3 and Figure 4 In this embodiment, a guide structure 4 (such as a guide rail and roller, or a guide rail and slider) is provided between the longitudinal moving member 3 and the inner wall of the longitudinal beam 12. The guide structure 4 restricts the displacement of the longitudinal moving member 3 in the vertical and horizontal directions, so that the longitudinal moving member 3 only moves back and forth without deviating. The structure is simple and has good reliability.

[0040] Furthermore, in this embodiment, the main bridge 1 is provided with a longitudinal movement drive 31 for driving the longitudinal movement of the longitudinal movement member 3. Preferably, the longitudinal movement drive 31 is a chain, which has a simple structure and reliable transmission.

[0041] Of course, in other embodiments, the longitudinal moving member 3 can also be driven to reciprocate by a hydraulic cylinder, an electric push rod, a gear and rack mechanism, etc., which will not be described in detail here.

[0042] In this embodiment, the rock drilling mechanism 2 includes a swing arm 21 that can swing laterally, and the swing arm 21 is connected to the longitudinal moving member 3. For example, the swing arm 21 is hinged to the longitudinal moving member 3, and the swing arm 21 swings laterally through a hydraulic cylinder, so that the working range of the rock drilling mechanism 2 can cover each blast hole on the end face of the arch to be excavated, reducing the blind spot of operation.

[0043] In this embodiment, the front end of the main bridge 1 is provided with a longitudinally movable front approach bridge 7, which is driven to move back and forth, for example, by a hydraulic cylinder, a sprocket and chain mechanism, etc. During operation, the front end of the trestle bridge 7 is attached to the step to be excavated, and the slag removal vehicle or other construction equipment (such as a concrete mixer truck) can smoothly go up and down the main bridge 1 with the help of the front approach bridge 7.

[0044] Furthermore, in this embodiment, the main bridge 1 is provided with a support wheel assembly 15 for supporting the front approach bridge 7. Preferably, the support wheel assembly 15 is located on the crossbeam 13. During the rock drilling process of the rock drilling mechanism 2, the front approach bridge 7 is attached to the step to be excavated, facilitating vehicles to pass over and over the main bridge 1. When blasting is required, the front approach bridge 7 retreats to a safe position to avoid damage during blasting, making the structure reasonable and effective. The support wheel assembly provides support for the front approach bridge 15, which helps reduce the resistance to the longitudinal movement of the front approach bridge 7 and makes it more convenient to use.

[0045] Furthermore, in this embodiment, the main bridge 1 is equipped with a longitudinally movable trestle trolley 5 (specifically on the longitudinal beam 12 of the main bridge 1). Telescopic outriggers 14 are provided on both the front end of the main bridge 1 and the trestle trolley 5. A traveling mechanism 6 (such as tracks or rollers) is also provided at the rear end of the main bridge 1. After completing the drilling, blasting, and debris removal processes for a 12-meter longitudinal construction section, the leading approach bridge 7 moves backward, the trestle trolley 5 moves forward to the front end of the main bridge 1, and then the telescopic outriggers 14 extend to provide support for the main bridge 1. The telescopic outriggers 14 of the main bridge 1 retract, and the traveling mechanism 6 drives the main bridge 6 forward. After the main bridge 1 moves a certain distance, the traveling mechanism 6 stops, the telescopic outriggers 14 of the main bridge extend, the telescopic outriggers 14 of the trestle trolley 5 retract, and then it moves forward again to the front end of the main bridge 1. This cycle repeats, achieving step-by-step movement, which can provide a stable mobile working platform for the drilling mechanism 2.

[0046] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A trestle device with rock drilling function, characterized in that: It includes a main bridge (1) and a rock drilling mechanism (2). The main bridge (1) is provided with a passage section (11) for vehicles to pass through. At least one side of the passage section (11) is provided with a longitudinally movable component (3). The longitudinally movable component (3) is connected to the rock drilling mechanism (2) in a one-to-one correspondence.

2. A trestle device with rock drilling function according to claim 1, characterized in that: The main bridge (1) includes two rows of longitudinal beams (12) and a crossbeam (13) located between the two rows of longitudinal beams (12). The passage section (11) is located on the crossbeam (13). The longitudinal beams (12) are hollow structures. The longitudinal moving member (3) is located inside the longitudinal beams (12).

3. A trestle device with rock drilling function according to claim 2, characterized in that: A guide structure (4) is provided between the longitudinal moving member (3) and the inner wall of the longitudinal beam (12).

4. The trestle device with rock drilling function according to claim 1, characterized in that: The main bridge (1) is provided with a longitudinal traverse drive (31) for driving the longitudinal traverse member (3) to move longitudinally.

5. A trestle device with rock drilling function according to claim 4, characterized in that: The longitudinal drive component (31) is a chain.

6. The rock-drilling bridge equipment according to any one of claims 1 to 5, characterized in that: The rock drilling mechanism (2) includes a swing arm (21) that can swing laterally, and the swing arm (21) is connected to the longitudinal moving member (3).

7. The rock-drilling bridge equipment according to any one of claims 1 to 5, characterized in that: The main bridge (1) is equipped with a longitudinally movable front approach bridge (7) at its front end.

8. A trestle device with rock drilling function according to claim 7, characterized in that: The main bridge (1) is provided with a support wheel assembly (15) for supporting the front approach bridge (7).

9. A trestle device with rock drilling function according to any of claims 1 to 5, characterized in that: The main bridge (1) is equipped with a longitudinally movable trolley (5), and telescopic outriggers (14) are provided on the front end of the main bridge (1) and the trolley (5). The rear end of the main bridge (1) is also equipped with a walking mechanism (6).

Images