A trestle device with rock drilling function

Abstract

This utility model discloses a trestle bridge device with rock drilling function, including a main bridge and a front approach bridge located at the front end of the main bridge. The front approach bridge includes a first approach bridge section for connecting to the main bridge and a second approach bridge section for overlapping with excavation steps. The first approach bridge section is connected to the second approach bridge section, and the second approach bridge section can rotate downwards. The trestle bridge device with rock drilling function also includes a rock drilling mechanism that can swing laterally and extend longitudinally. The rock drilling mechanism is located on the main bridge and below the first approach bridge section. The trestle bridge device with rock drilling function disclosed in this utility model has a reliable structure and can accommodate both rock drilling and vehicle passage and muck removal, which is beneficial to improving the construction progress.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering machinery technology, and in particular to a trestle equipment with rock drilling construction 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 reliable trestle equipment with rock drilling function that can take into account both rock drilling and vehicle passage and slag removal, and is conducive to improving the construction progress.

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

[0008] A trestle bridge with rock drilling function includes a main bridge and a front approach bridge located at the front end of the main bridge. The front approach bridge includes a first approach bridge section for connecting to the main bridge and a second approach bridge section for overlapping with an excavation step. The first approach bridge section is connected to the second approach bridge section, and the second approach bridge section can rotate downward. The trestle bridge with rock drilling function also includes a rock drilling mechanism that can swing laterally and extend longitudinally. The rock drilling mechanism is located on the main bridge and below the first approach bridge section.

[0009] Optionally, the first approach bridge section is hinged to the main bridge, the second approach bridge section is hinged to the first approach bridge section, and a swing drive is provided between the first approach bridge section and the main bridge to adjust the tilt angle of the first approach bridge section.

[0010] Optionally, the main bridge is provided with a first longitudinally movable trolley, and the rock drilling mechanism is connected to the first longitudinally movable trolley.

[0011] Optionally, the main bridge includes two rows of main beams arranged longitudinally and a crossbeam disposed 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. The main beam is provided with a first longitudinal guide rail along the longitudinal direction, and the two sides of the first longitudinal trolley are respectively provided with moving parts that cooperate with the two first longitudinal guide rails.

[0012] Optionally, the first longitudinal trolley is provided with a transverse guide rail and a transverse seat that cooperates with the transverse guide rail, and the rock drilling mechanism is located on the transverse seat.

[0013] Optionally, the transverse guide rail includes a guide rod and a chain, with both ends of the guide rod and the chain fixed to the two sides of the first longitudinal trolley. The transverse seat includes a first sprocket meshing with the chain, a rotary drive for driving the first sprocket to rotate, and a sleeve fitted on the guide rod. The rotary drive and the rock drilling mechanism are both mounted on the sleeve.

[0014] Optionally, the first longitudinal trolley is provided with a first telescopic outrigger for supporting the main bridge, and the front outrigger is telescopic.

[0015] Optionally, a traveling mechanism is provided at the rear end of the main beam.

[0016] Optionally, the main bridge is provided with a second longitudinally movable trolley, the second longitudinally movable trolley is provided with a second telescopic outrigger for supporting the main bridge, the front outrigger is telescopic, and the rear end of the main beam is provided with a traveling mechanism.

[0017] Optionally, 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.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] This utility model discloses a trestle bridge device with rock drilling function, which integrates a rock drilling mechanism that can swing laterally and extend longitudinally on the main bridge of the trestle bridge. The rock drilling mechanism can drill blast holes in the end face of the invert arch to be excavated or in the area of ​​the deep-buried ditch excavation. The rock drilling mechanism can cover all the blast holes on the end face of the invert arch to be excavated by swinging laterally, reducing blind spots. Compared with the manual hand-held drilling method, the rock drilling efficiency is higher, and the blasting effect and excavation profile quality are also better. The rock drilling mechanism is located below the first approach bridge section, and the slag removal vehicles or other construction equipment can pass normally on the main bridge without interference, resulting in high construction efficiency. After the rock drilling work of each blast hole on the end face of the invert arch to be excavated is completed, the rock drilling mechanism retracts, and the second approach bridge section rotates downward to protect the rock drilling mechanism behind it, which can effectively avoid damage to the rock drilling mechanism during blasting, and has high reliability.

[0020] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of this utility model.

[0022] Figure 2 This is a side view of the structure of the first longitudinal trolley in the first embodiment of the present invention when it is in place.

[0023] Figure 3 This is a side view of the rock drilling mechanism when the front approach bridge protects the rock drilling mechanism according to Embodiment 1 of this utility model.

[0024] Figure 4 yes Figure 2 A schematic diagram of the structure in the AA section.

[0025] Figure 5 yes Figure 2 A structural schematic diagram in the BB section.

[0026] Figure 6 This is a side view of the swing drive mechanism according to Embodiment 1 of this utility model.

[0027] Figure 7This is a three-dimensional structural schematic diagram of the swing drive mechanism according to Embodiment 1 of this utility model.

[0028] Figure 8 This is a top view of the structure of Embodiment 1 of this utility model.

[0029] Figure 9 This is a top view of the rock-drilling mechanism of Embodiment 1 of this utility model, showing the rock-drilling state in the middle of the inverted arch.

[0030] Figure 10 This is a top view of the rock-drilling mechanism of Embodiment 1 of this utility model, showing the rock-drilling state on the side of the inverted arch.

[0031] Figure 11 This is a three-dimensional structural diagram of Embodiment 2 of this utility model.

[0032] Figure 12 This is a cross-sectional structural diagram of Embodiment 2 of this utility model.

[0033] Figure 13 This is a top view of the rock-drilling mechanism of Embodiment 2 of this utility model, showing the rock-drilling state on the side of the inverted arch.

[0034] Figure 14 This is a top view of the rock-drilling mechanism of Embodiment 2 of this utility model, showing the rock-drilling state in the middle of the inverted arch.

[0035] Figure 15 This is a structural schematic diagram of Embodiment 3 of this utility model.

[0036] Figure 16 This is a structural schematic diagram of Embodiment 4 of this utility model.

[0037] Figure 17 This is a cross-sectional structural diagram of another embodiment of the present invention.

[0038] The labels in the diagram represent: 1. Main bridge; 11. Main beam; 111. Front outrigger; 112. Rear outrigger; 113. Stabilizing outrigger; 12. Crossbeam; 13. First longitudinal guide rail; 14. Traveling mechanism; 2. Rock drilling mechanism; 3. First longitudinal trolley; 31. Moving part; 32. First telescopic outrigger; 4. Lateral guide rail; 41. Guide rod; 42. Chain; 5. Lateral seat; 51. First sprocket; 52. Rotary drive component; 53. Sleeve; 54. Second sprocket; 6. Second longitudinal trolley; 61. Second telescopic outrigger; 7. Rear approach bridge; 8. Front approach bridge; 81. First approach bridge section; 811. Swing drive component; 82. Second approach bridge section; 9. Swing drive mechanism; 91. Telescopic swing arm; 92. Telescopic drive component. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Example 1

[0044] Figures 1 to 10 This illustration shows an embodiment of the present invention, a trestle device with rock drilling function, including a main bridge 1 and a front approach bridge 8 located at the front end of the main bridge 1. The front approach bridge 8 includes a first approach bridge section 81 for connecting the main bridge 1 and a second approach bridge section 82 for overlapping with the excavation bench. The first approach bridge section 81 and the second approach bridge section 82 are connected, and the second approach bridge section 82 can rotate downwards. The trestle device with rock drilling function also includes a rock drilling mechanism 2 that can swing laterally and extend longitudinally. The rock drilling mechanism 2 is located on the main bridge 1 and below the first approach bridge section 81. 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.

[0045] This trestle equipment with rock drilling capabilities integrates a rock drilling mechanism 2, which can swing laterally and extend longitudinally, onto the main bridge 1 of the trestle. The rock drilling mechanism 2 can perform blasting on the end face of the invert arch to be excavated or in the area of ​​the deep-buried ditch excavation. By swinging laterally, the rock drilling mechanism 2 can cover all the blast holes on the end face of the invert arch to be excavated, reducing blind spots. Compared with manual handheld drilling, the rock drilling efficiency is higher, and the blasting effect and excavation profile quality are also better. The rock drilling mechanism 2 is located below the first approach bridge section 81, allowing cleaning vehicles or other construction equipment to pass normally on the main bridge 1 without interference, resulting in high construction efficiency. After the rock drilling work on each blast hole of the end face of the invert arch to be excavated is completed, the rock drilling mechanism 2 retracts, and the second approach bridge section 82 rotates downward to protect the rock drilling mechanism 2 behind it, which can effectively prevent damage to the rock drilling mechanism 2 during blasting, ensuring high reliability.

[0046] During operation, the trestle equipment with rock drilling function works as follows: after the main bridge 1 is in place, the front approach bridge 8 is attached to the step to be excavated, and the rear approach bridge 7 is attached to the already poured filling layer. The rock drilling mechanism 2 drills blast holes in the end face of the invert arch to be excavated by telescoping and lateral swinging. After all the blast holes in the end face are drilled, the rock drilling mechanism 2 retracts, and the second approach bridge section 82 rotates downward to protect the rock drilling mechanism 2 behind it. Explosives are loaded into each blast hole in the end face of the invert arch and the debris is removed. The above steps are repeated until the excavation of the entire construction section of the invert arch is completed (the length of the entire construction section of the invert arch is 12 meters, and each time a 4-meter depth of rock drilling is completed, three cycles of operation are required).

[0047] See details Figures 1 to 3 , Figure 6 ,to Figure 10 As an optional embodiment, the rock drilling mechanism 2 is driven to swing laterally and extend and retract via a swing drive mechanism 9. The swing drive mechanism 9 includes a telescopic swing arm 91 and a telescopic drive component 92 (which can be a hydraulic cylinder, pneumatic cylinder, electric cylinder, or other drive component). One end of the telescopic drive component 92 is hinged to the main bridge 1, and the other end is hinged to the telescopic swing arm 91. One end of the telescopic swing arm 91 is hinged to the main bridge 1, and the other end is connected to the rock drilling mechanism 2. The extension and retraction of the telescopic drive component 92 drives the telescopic swing arm 91 to swing, thereby driving the rock drilling mechanism 2 to swing laterally. The retraction of the telescopic swing arm 91 can drive 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 invert when changing the rock drilling hole during the lateral swing. After reaching the position of the blast hole, the rock drilling depth of the blast hole can be adjusted by adjusting the extension distance of the telescopic swing arm 91, which is beneficial to the consistency of the rock drilling depth of each blast hole.

[0048] See details Figures 1 to 3 , Figure 7In this embodiment, the first approach bridge section 81 is hinged to the main bridge 1, and the second approach bridge section 82 is hinged to the first approach bridge section 81. A swing drive component 811 (which can be a hydraulic cylinder, pneumatic cylinder, electric cylinder, etc.) is provided between the first approach bridge section 81 and the main bridge 1 to adjust the tilt angle of the first approach bridge section 81. Before the second approach bridge section 82 rotates downward, the swing drive component 811 drives the first approach bridge section 81 to rotate upward at a suitable angle in advance, so that the second approach bridge section 82 does not contact the step to be excavated, which facilitates the rotation of the second approach bridge section 82 (the swing drive component 811 can be set in the first approach bridge section 81 and the second approach bridge section 82 to drive the rotation of the second approach bridge section 82). Of course, in other embodiments, the front approach bridge 8 can be set to be longitudinally movable, and the first approach bridge section 81 can be separated from the step to be excavated by longitudinal movement, which can also facilitate the rotation of the second approach bridge section 82.

[0049] See details Figures 1 to 4 , Figure 6 ,to Figure 10 In this embodiment, the main bridge 1 is equipped with a first longitudinally movable trolley 3, and the rock drilling mechanism 2 is connected to the first longitudinally movable trolley 3. The first longitudinally movable trolley 3 can drive the rock drilling mechanism 2 to move back and forth through longitudinal movement, which can not only increase the longitudinal rock drilling range of the rock drilling mechanism 2, but also, after the rock drilling is completed, the first longitudinally movable trolley 3 can drive the rock drilling mechanism 2 away from the end face of the invert arch to be opened, which can further avoid damage to the rock drilling mechanism 2 during blasting, and improve reliability.

[0050] See details Figures 4 to 5 , Figure 8 ,to Figure 10 In this embodiment, the main bridge 1 includes two rows of longitudinally arranged main beams 11 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. The main beam 11 is provided with a first longitudinal guide rail 13 along its longitudinal direction. The two sides of the first longitudinal trolley 3 are respectively provided with moving parts 31 that cooperate with the two first longitudinal guide rails 13. The upper surface of the crossbeam 12 is provided with a traveling part (bridge deck). Vehicles and other construction equipment can pass normally on the top of the crossbeam 12, which is suitable for tunnels with a relatively wide width.

[0051] See details Figure 17 Of course, in other embodiments, 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. The main beam 11 is provided with a first longitudinal guide rail 13 along its longitudinal direction. The two sides of the first longitudinal trolley 3 are respectively provided with a moving part 31 that cooperates with the two first longitudinal guide rails 13. The upper surface of the main beam 11 is provided with a traveling part (bridge deck). The height of the first longitudinal guide rail 13 is less than the height of the traveling part on the upper surface of the main beam 11. Vehicles and other construction equipment can pass normally on the top of the main beam 11, which is suitable for tunnels with narrow width.

[0052] See details Figures 1 to 4 , Figure 6 ,to Figure 10 In this embodiment, the first longitudinal trolley 3 is equipped with a first telescopic support leg 32 for supporting the main bridge 1, and the front support leg 111 is telescopic. Before the rock drilling mechanism 2 swings laterally, the first telescopic support leg 32 supports the ground, and the front support leg 111 retracts. While ensuring the stability of the main bridge 1, this helps to avoid interference between the rock drilling mechanism 2 and the front support leg 111 during subsequent lateral swings, which helps to increase the lateral swing range of the rock drilling mechanism 2 and further reduce the blind spot of operation.

[0053] See details Figures 1 to 3 In this embodiment, a walking mechanism 14 is provided at the rear end of the main beam 11. The main bridge 1 can move while stepping by cooperating with the front support leg 111, rear support leg 112, first longitudinal trolley 3, and first telescopic support leg 32. This adapts to the limited space and frequent process changes within the tunnel, 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 trolley, please refer to the various stepping trolleys previously applied for by the applicant, which will not be elaborated further. Furthermore, the main bridge 1 is provided with a second longitudinal trolley 6 (located behind the first longitudinal trolley 3), which can move longitudinally. The second longitudinal trolley 6 is provided with a second telescopic support leg 61 for supporting the main bridge 1. The main bridge 1 can also move while stepping by cooperating with the front support leg 111, rear support leg 112, second longitudinal trolley 6, and second telescopic support leg 61. In other embodiments, the first telescopic support leg 32 may not be provided on the first longitudinal trolley 3. The second longitudinal trolley 6 moves to the front end of the main bridge 1 before the rock drilling mechanism 2 swings laterally. The second telescopic support leg 61 supports the ground to replace the front support leg 111 in supporting the main bridge 1, which can also ensure the stability of the main bridge 1 when the rock drilling mechanism 2 is drilling.

[0054] See details Figures 1 to 3 , Figure 8 In this embodiment, a rear approach bridge 7 is hinged at the rear end of the main bridge 1, and a swing drive component 811 is provided between the rear approach bridge 7 and the main bridge 1 to adjust the tilt angle of the rear approach bridge 7. The tilt angle of the rear approach bridge 7 can be adjusted according to different connection requirements, which facilitates vehicle loading and unloading and has good adaptability.

[0055] Example 2

[0056] Figures 11 to 14 Another embodiment of the present invention is shown. The trestle equipment with rock drilling function in this embodiment is largely the same as that in Embodiment 1, except that: in this embodiment, the first longitudinal trolley 3 is provided with a transverse guide rail 4 and a transverse seat 5 that cooperates with the transverse guide rail 4, and the rock drilling mechanism 2 is located on the transverse seat 5. The transverse seat 5 can drive the rock drilling mechanism 2 to move laterally, and its transverse rock drilling coverage is wider and the blind spot is smaller.

[0057] Further, see Figures 11 to 14 In this embodiment, the transverse guide rail 4 includes a guide rod 41 and a chain 42. Both ends of the guide rod 41 and the chain 42 are fixed to the two sides of the first longitudinal trolley 3, respectively. The transverse seat 5 includes a first sprocket 51 that meshes with the chain 42, a rotary drive 52 that drives the first sprocket 51 to rotate, and a sleeve 53 sleeved on the guide rod 41. The rotary drive 52 and the rock drilling mechanism 2 are both mounted on the sleeve 53.

[0058] Further, see Figure 12 In this embodiment, the left and right sides (left and right directions are the lateral directions) of the sleeve 53 are respectively equipped with second sprockets 54 that rotate with it. The chain teeth on the inner side of the second sprocket 54 mesh with the chain 42, and the chain teeth on the lower side of the first sprocket 51 mesh with the chain 42, which is more conducive to ensuring the stability of the transverse shift seat 5 when it moves laterally.

[0059] Further, see Figure 11 and Figure 12 In this embodiment, the first sprocket 51, the second sprocket 54 and the rotary drive 52 are all located below the rock drilling mechanism 2, which helps to avoid interference when the rock drilling mechanism 2 swings laterally.

[0060] Example 3

[0061] Figure 15 Another embodiment of the present invention is shown. The trestle equipment with rock drilling function in this embodiment is generally the same as that in the first embodiment. The difference is that the main bridge 1 in this embodiment is longer, and the main beam 11 is also provided with a stabilizing leg 113. The stabilizing leg 113 is a telescopic leg. The first longitudinal trolley 3 is located between the stabilizing leg 113 and the front leg 111, which is beneficial to increase the forward and backward movement range of the first longitudinal trolley 3.

[0062] Example 4

[0063] Figure 16 Another embodiment of the present invention is shown. The trestle equipment with rock drilling function in this embodiment is roughly the same as that in embodiment two. The difference is that the main bridge 1 in this embodiment is longer, and the main beam 11 is also provided with a stabilizing leg 113. The stabilizing leg 113 is a telescopic leg. The first longitudinal trolley 3 is located between the stabilizing leg 113 and the front leg 111, which is beneficial to increase the forward and backward movement range of the first longitudinal trolley 3.

[0064] 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 bridge device with rock drilling function, comprising a main bridge (1) and a front approach bridge (8) located at the front end of the main bridge (1), characterized in that: The front approach bridge (8) includes a first approach bridge section (81) for connecting the main bridge (1) and a second approach bridge section (82) for overlapping with the excavation steps. The first approach bridge section (81) is connected to the second approach bridge section (82). The second approach bridge section (82) can rotate downward. The trestle equipment with rock drilling function also includes a rock drilling mechanism (2) that can swing laterally and extend longitudinally. The rock drilling mechanism (2) is located on the main bridge (1) and below the first approach bridge section (81).

2. The trestle bridge equipment with rock drilling function according to claim 1, characterized in that: The first approach bridge section (81) is hinged to the main bridge (1), the second approach bridge section (82) is hinged to the first approach bridge section (81), and a swing drive (811) is provided between the first approach bridge section (81) and the main bridge (1) to adjust the tilt angle of the first approach bridge section (81).

3. The trestle bridge equipment with rock drilling function according to claim 1, characterized in that: The main bridge (1) is equipped with a first longitudinal trolley (3) that can move longitudinally, and the rock drilling mechanism (2) is connected to the first longitudinal trolley (3).

4. The trestle bridge equipment with rock drilling function according to claim 3, characterized in that: The main bridge (1) includes two longitudinally arranged main beams (11) and a crossbeam (12) between the two 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). The main beam (11) is provided with a first longitudinal guide rail (13) along the longitudinal direction. The two sides of the first longitudinal trolley (3) are respectively provided with a moving part (31) that cooperates with the two first longitudinal guide rails (13).

5. The trestle equipment with rock drilling function according to claim 4, characterized in that: The first longitudinal trolley (3) is provided with a transverse guide rail (4) and a transverse seat (5) that cooperates with the transverse guide rail (4), and the rock drilling mechanism (2) is provided on the transverse seat (5).

6. The trestle bridge equipment with rock drilling function according to claim 5, characterized in that: The transverse guide rail (4) includes a guide rod (41) and a chain (42). Both ends of the guide rod (41) and the chain (42) are fixed to the two sides of the first longitudinal trolley (3). The transverse seat (5) includes a first sprocket (51) meshing with the chain (42), a rotary drive (52) driving the first sprocket (51) to rotate, and a sleeve (53) sleeved on the guide rod (41). The rotary drive (52) and the rock drilling mechanism (2) are both located on the sleeve (53).

7. The trestle equipment with rock drilling function according to any one of claims 4 to 6, characterized in that: The first longitudinal trolley (3) is provided with a first telescopic outrigger (32) for supporting the main bridge (1), and the front outrigger (111) is telescopic.

8. The trestle equipment with rock drilling function according to claim 7, characterized in that: The rear end of the main beam (11) is provided with a traveling mechanism (14).

9. The trestle equipment with rock drilling function according to any one of claims 4 to 6, characterized in that: The main bridge (1) is provided with a second longitudinal trolley (6) that can move longitudinally. The second longitudinal trolley (6) is provided with a second telescopic support leg (61) for supporting the main bridge (1). The front support leg (111) is telescopic. The rear end of the main beam (11) is provided with a walking mechanism (14).

10. The trestle equipment with rock drilling function according to any one of claims 1 to 6, characterized in that: The rear end of the main bridge (1) is hinged with a rear approach bridge (7), and a swing drive (811) is provided between the rear approach bridge (7) and the main bridge (1) to adjust the tilt angle of the rear approach bridge (7).

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