A trestle with rock drilling function

Abstract

The utility model discloses a trestle with rock drilling function, including main bridge still including the swing drive mechanism and the rock drilling mechanism of swing drive mechanism connection being located on the main bridge, swing drive mechanism is used for driving rock drilling mechanism transverse swing, the main bridge is equipped with the passing department of passing for vehicle, swing drive mechanism is located the below or side of passing department. The utility model discloses a trestle with rock drilling function, and when rock drilling mechanism is to the blast hole rock drilling of the excavation of inverted arch end face or deep buried water ditch excavation area, the vehicle of clearing residue or other construction equipment can normally pass from the passing department of main bridge, do not interfere with each other, is favorable to improve construction efficiency, and rock drilling mechanism can swing transversely under the drive of swing drive mechanism, and then can cover each blast hole of inverted arch end face of excavation, reduces the blind area of operation.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering machinery technology, and in particular to a trestle bridge 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: 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.

[0003] 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.

[0004] 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

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a trestle with a reliable structure that can accommodate both rock drilling and vehicle passage for muck removal, thereby improving the construction progress.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A rock-drilling trestle includes a main bridge, a swing drive mechanism mounted on the main bridge, and a rock-drilling mechanism connected to the swing drive mechanism. The swing drive mechanism is used to drive the rock-drilling mechanism to swing laterally. The main bridge is provided with a passageway for vehicles to pass through, and the swing drive mechanism is located below or to the side of the passageway.

[0007] As a further improvement to the above technical solution: The swing drive mechanism includes a swing arm and a telescopic drive member. One end of the telescopic drive member is hinged to the main bridge and the other end is hinged to the swing arm. One end of the swing arm is hinged to the main bridge and the other end is connected to the rock drilling mechanism.

[0008] The swing arm is a telescopic arm.

[0009] The main bridge includes two rows of main beams arranged longitudinally and a crossbeam located between the two rows of main beams. The front end of the main beam is provided with a front support leg, and the rear end of the main beam is provided with a rear support leg.

[0010] The swing drive mechanism is located at the front end of the main beam.

[0011] Both main beams are equipped with the swing drive mechanism.

[0012] The main bridge also includes a connecting seat, the two ends of which are respectively connected to the front ends of the two main beams, and the swing drive mechanism is disposed on the connecting seat.

[0013] The main bridge is equipped with a longitudinally movable approach bridge at its front end.

[0014] The rear end of the main bridge is hinged with a rear approach bridge, and a swing drive is provided between the rear approach bridge and the main bridge to adjust the tilt angle of the rear approach bridge.

[0015] The front outrigger is retractable, the main beam is equipped with a longitudinal trolley, the longitudinal trolley is equipped with a telescopic outrigger, and the rear end of the main beam is equipped with a traveling mechanism.

[0016] The main beam is equipped with a longitudinal trolley, and the longitudinal trolley is equipped with telescopic outriggers.

[0017] Compared with the prior art, the advantages of this utility model are: The rock-drilling trestle disclosed in this utility model integrates the rock-drilling mechanism onto the main bridge of the trestle via a swing drive mechanism. The swing drive mechanism is located below or to the side of the passageway. When the rock-drilling mechanism is drilling blast holes in the excavated invert arch face or the area of ​​the deep-buried ditch, the slag removal vehicle or other construction equipment can pass normally through the passageway of the main bridge without interference, which is conducive to improving construction efficiency. Furthermore, the rock-drilling mechanism can swing laterally under the drive of the swing drive mechanism, thereby covering all blast holes in the excavated invert arch face and reducing blind spots in operation.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the rock-drilling trestle bridge of this utility model. Figure 2 yes Figure 1 A magnified structural diagram of section C.

[0020] Figure 3 yes Figure 1 A schematic diagram of the structure in the AA section.

[0021] Figure 4 yes Figure 1 A structural schematic diagram in the BB section.

[0022] Figure 5 This is a top view schematic diagram of the rock-drilling trestle bridge of this utility model.

[0023] Figure 6 This is a second top view structural schematic diagram of the rock-drilling trestle bridge of this utility model.

[0024] Figure 7 This is a three-dimensional structural diagram of the rock-drilling trestle bridge of this utility model.

[0025] Figure 8 This is a three-dimensional structural diagram of the swing drive mechanism of this utility model.

[0026] Figure 9 This is a three-dimensional structural schematic diagram of another embodiment of the present invention.

[0027] Figure 10 This is a three-dimensional structural schematic diagram of the swing drive mechanism according to another embodiment of the present invention.

[0028] Figure 11 This is a top view of the rock drilling mechanism according to another embodiment of the present invention.

[0029] Figure 12This is a cross-sectional structural schematic diagram of another embodiment of the present invention.

[0030] The labels in the diagram represent: 1. Main bridge; 10. Passage section; 11. Main beam; 111. Front outrigger; 112. Rear outrigger; 12. Crossbeam; 13. Connecting seat; 14. Longitudinal trolley; 141. Telescopic outrigger; 15. Traveling mechanism; 2. Rock drilling mechanism; 3. Swing drive mechanism; 31. Swing arm; 32. Telescopic drive component; 4. Front approach bridge; 5. Rear approach bridge; 6. Swing drive component. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Figures 1 to 8This invention illustrates one embodiment of a rock-drilling trestle, comprising a main bridge 1, a swing drive mechanism 3 mounted on the main bridge 1, and a rock-drilling mechanism 2 connected to the swing drive mechanism 3. The swing drive mechanism 3 drives the rock-drilling mechanism 2 to swing laterally. A passageway 10 for vehicles is provided on the main bridge 1, and the swing drive mechanism 3 is located below the passageway 10. (Of course, in other embodiments, the swing drive mechanism 3 can also be located on the side of the passageway 10 without obstructing vehicles or other construction equipment from passing through the passageway 10. The drawback is that the space under the main bridge 1 is not fully utilized, increasing the overall width of the trestle). It should be noted that in this specification, "lateral" is defined as the width direction of the tunnel, "longitudinal" is defined as the length direction of the tunnel, and "front end" is defined as the tunnel excavation end.

[0036] The rock-drilling trestle integrates the rock-drilling mechanism 2 onto the main bridge 1 of the trestle via a swing drive mechanism 3. The swing drive mechanism 3 is located below the passage section 10. When the rock-drilling mechanism 2 is drilling blast holes in the excavated invert arch face or the deep-buried ditch excavation area, the slag removal vehicle or other construction equipment can pass normally through the passage section 10 of the main bridge 1 without interference, which is conducive to improving construction efficiency. Furthermore, the rock-drilling mechanism 2 can swing laterally under the drive of the swing drive mechanism 3, thereby covering each blast hole in the excavated invert arch face and reducing blind spots in operation.

[0037] See details Figures 1 to 2 , Figures 5 to 8 In this embodiment, the swing drive mechanism 3 includes a swing arm 31 and a telescopic drive member 32. One end of the telescopic drive member 32 is hinged to the main bridge 1, and the other end is hinged to the swing arm 31. One end of the swing arm 31 is hinged to the main bridge 1, and the other end is connected to the rock drilling mechanism 2. The telescopic drive member 32 extends and retracts, causing the swing arm 31 to swing, which in turn causes the rock drilling mechanism 2 to swing laterally, thus enabling the rock drilling mechanism 2 to cover the rock drilling operations of multiple blast holes. Preferably, the swing arm 31 is a telescopic arm. The retraction of the swing arm 31 can cause the rock drilling mechanism 2 to retract away from the end face of the invert to be excavated, which helps to avoid the rock drilling mechanism 2 scraping against the end face of the excavated invert when it swings laterally to change the blast hole. At the same time, it can reduce the damage from fly soil and rock during blasting. After the rock drilling mechanism 2 swings laterally to change the blast hole, the rock drilling depth of the blast hole can be adjusted by adjusting the extension distance of the swing arm 31, which is beneficial to the consistency of the rock drilling depth of each blast hole. During construction, the excavation of an invert arch is often not completed in one go, but needs to be divided into multiple stages. Each stage only completes the excavation to a certain depth. The swing arm 31 is a telescopic arm, which can participate in the excavation work of multiple stages by controlling the length of the extension, thereby helping to avoid frequent movement of the position of the main bridge 1 and improving construction efficiency.

[0038] Furthermore, in this embodiment, the main bridge 1 includes two rows of longitudinally arranged main beams 11 and a crossbeam 12 disposed between the two rows of main beams 11 (see...). Figures 3 to 7 The main beam 11 has a front support leg 111 at its front end and a rear support leg 112 at its rear end (see...). Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 The swing drive mechanism 3 is located at the front end of the main beam 11, which helps to prevent the swing drive mechanism 3 from interfering with the normal operation of other components or equipment during operation. In another embodiment, the swing drive mechanism 3 can also be located elsewhere, for example, a connecting seat 13 can be provided at the front end of the two main beams 11, with both ends of the connecting seat 13 connected to the front end of the two main beams 11 respectively, and the swing drive mechanism 3 is located on the connecting seat 13 (see...). Figures 9 to 12 Similarly, it helps prevent the swing drive mechanism 3 from interfering with the normal operation of other components or equipment during operation.

[0039] See details Figures 4 to 8 In a preferred embodiment, each of the two main beams 11 is provided with a swing drive mechanism 3. Specifically, each of the two main beams 11 is provided with a swing drive mechanism 3. Both swing drive mechanisms 3 are connected to the rock drilling mechanism 2. By driving the two rock drilling mechanisms 2 to swing laterally through the two swing drive mechanisms 3, a wider distance can be covered, further reducing the blind spot in rock drilling.

[0040] See details Figures 1 to 2 , Figures 5 to 8 In this embodiment, the front end of the main bridge 1 is equipped with a longitudinally movable front approach bridge 4. During the rock drilling process, the front approach bridge 4 rests on the step to be excavated, facilitating vehicles to pass over and under the main bridge 1. When blasting is required, the front approach bridge 4 retreats to a safe position to avoid damage during blasting, making the structure reasonable and effective. Preferably, a support wheel set can be provided at the front end of the main bridge 1 to provide support for the front approach bridge 4, thereby reducing the resistance to the longitudinal movement of the front approach bridge 4 and making it more convenient to use.

[0041] See details Figure 1 , Figures 5 to 8 In this embodiment, a rear approach bridge 5 is hinged at the rear end of the main bridge 1. A swing drive 6 is provided between the rear approach bridge 5 and the main bridge 1 to adjust the tilt angle of the rear approach bridge 5. The swing drive 6 can be a hydraulic cylinder, pneumatic cylinder or electric cylinder, etc. It can adjust the tilt angle of the rear approach bridge 5 according to different connection requirements, which facilitates vehicle loading and unloading and has good adaptability.

[0042] Furthermore, in this embodiment, the front outrigger 111 and the main beam 11 are equipped with a longitudinal trolley 14 (see...). Figure 1 and Figure 7The longitudinal trolley 14 is equipped with telescopic outriggers 141, and the rear end of the main beam 11 is equipped with a traveling mechanism 15. Through the cooperation of the front outriggers 111, rear outriggers 112, longitudinal trolley 14, and telescopic outriggers 141, the main bridge 1 can move in a stepping motion 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. For the specific principle of the stepping movement of the trestle, please refer to the various stepping trestle applications previously filed by the applicant, which will not be elaborated here.

[0043] For excavation of trenches without considering deep burial, the excavation operation using the rock-drilling trestle bridge of this embodiment can be carried out using method 1, which includes the following steps: S1, Main Bridge 1 has been moved into position; S2, the front approach bridge 4 moves forward and overlaps on the step to be excavated, while the rear approach bridge 5 overlaps on the filling layer that has been poured. The swing drive mechanism 3 drives the rock drilling mechanism 2 to move and drill blast holes on the end face of the arch to be excavated. S3. After completing all the rock drilling at the end face, the front approach bridge 4 moves back to a safe area, and the swing drive mechanism 3 drives the rock drilling mechanism 2 away from the end face of the inverted arch. S4. Charge explosives into each blast hole of the invert arch and blast, then remove debris. S5. Repeat steps S2 to S4 until the excavation of the entire construction section of the invert arch is completed.

[0044] For tunnels designed with deeply buried drainage ditches and culverts, considering the excavation of the deeply buried drainage ditches, the following steps can be added to Method 1: S6. The swing drive mechanism 3 drives the rock drilling mechanism 2 to move to the deep buried ditch excavation area to perform blasting at the bottom of the deep buried ditch. S7. The rock drilling mechanism 2 adjusts its posture to drill blast holes in the side wall of the deep-buried ditch. S8. The front approach bridge 4 moves back to a safe area, and the swing drive mechanism 3 drives the rock drilling mechanism 2 away from the deep-buried ditch. S9. Load explosives into each blast hole in the deep-buried ditch and blast, then remove the slag. S10. Repeat steps S6 to S9 until the excavation of the entire construction section of the deep-buried ditch is completed. S11. Install culverts in the areas where deep-buried ditches have been excavated.

[0045] For tunnels designed with deeply buried drainage ditches and culverts, considering the excavation of the deeply buried ditches, method 2 can be used for excavation operations using the rock-drilling trestle bridge of this embodiment. The steps of method 2 include: S1, Main Bridge 1, has been moved into position; S2, the front approach bridge 4 moves forward and overlaps on the step to be excavated, while the rear approach bridge 5 overlaps on the filling layer that has been poured. The swing drive mechanism 3 drives the rock drilling mechanism 2 to move and drill blast holes on the end face of the arch to be excavated. S3. After completing all the rock drilling at the end face, the front approach bridge 4 moves back to a safe area, and the swing drive mechanism 3 drives the rock drilling mechanism 2 away from the end face of the inverted arch. S4. Charge explosives into each blast hole of the invert arch and blast, then remove debris. S5. The swing drive mechanism 3 drives the rock drilling mechanism 2 to move to the deep buried ditch excavation area and drills blast holes at the bottom of the deep buried ditch 6. S6. The rock drilling mechanism 2 adjusts its posture to drill blast holes in the side wall of the deep-buried ditch. S7. The front approach bridge 4 moves back to a safe area, and the swing drive mechanism 3 drives the rock drilling mechanism 2 away from the deep-buried ditch. S8. Load explosives into each blast hole in the deep-buried ditch and blast, then remove the slag. S9. Repeat steps S2 to S8 until the excavation of the entire construction section of the inverted arch and the deep-buried ditch is completed. S10. Install culverts in the area where the deep-buried ditch has been excavated.

[0046] Method 1 involves first excavating the entire construction section of the invert arch, then gradually excavating the entire construction section of the deep-buried ditch, and finally installing culvert 6. Method 2 involves alternating excavation of the entire construction section of the invert arch and the entire construction section of the deep-buried ditch, and finally installing culvert 6, which is more flexible than Method 1.

[0047] 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 rock-drilling trestle bridge, comprising a main bridge (1), characterized in that: It also includes a swing drive mechanism (3) provided on the main bridge (1) and a rock drilling mechanism (2) connected to the swing drive mechanism (3). The swing drive mechanism (3) is used to drive the rock drilling mechanism (2) to swing laterally. The main bridge (1) is provided with a passage section (10) for vehicles to pass through. The swing drive mechanism (3) is located below or to the side of the passage section (10).

2. The rock-drilling trestle bridge according to claim 1, characterized in that: The swing drive mechanism (3) includes a swing arm (31) and a telescopic drive member (32). One end of the telescopic drive member (32) is hinged to the main bridge (1) and the other end is hinged to the swing arm (31). One end of the swing arm (31) is hinged to the main bridge (1) and the other end is connected to the rock drilling mechanism (2).

3. The rock-drilling trestle bridge according to claim 2, characterized in that: The swing arm (31) is a telescopic arm.

4. The rock-drilling trestle bridge according to any one of claims 1 to 3, characterized in that: The main bridge (1) includes two rows of main beams (11) arranged longitudinally and a crossbeam (12) located between the two rows of main beams (11). The front end of the main beam (11) is provided with a front support leg (111) and the rear end of the main beam (11) is provided with a rear support leg (112).

5. The rock-drilling trestle bridge according to claim 4, characterized in that: The swing drive mechanism (3) is located at the front end of the main beam (11).

6. The rock-drilling trestle bridge according to claim 5, characterized in that: Both main beams (11) are equipped with the swing drive mechanism (3).

7. The rock-drilling trestle bridge according to claim 5, characterized in that: The main bridge (1) also includes a connecting seat (13), the two ends of which are respectively connected to the front ends of the two main beams (11), and the swing drive mechanism (3) is provided on the connecting seat (13).

8. The rock-drilling trestle bridge according to claim 5, characterized in that: The main bridge (1) is equipped with a longitudinally movable front approach bridge (4) at its front end.

9. The rock-drilling trestle bridge according to claim 5, characterized in that: The rear end of the main bridge (1) is hinged with a rear approach bridge (5), and a swing drive (6) is provided between the rear approach bridge (5) and the main bridge (1) to adjust the tilt angle of the rear approach bridge (5).

10. The rock-drilling trestle bridge according to claim 5, characterized in that: The front outrigger (111) is telescopic, the main beam (11) is provided with a longitudinal trolley (14), the longitudinal trolley (14) is provided with a telescopic outrigger (141), and the rear end of the main beam (11) is provided with a walking mechanism (15).

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