Tunnel top-lifting construction blasting excavation auxiliary device

Abstract

The utility model relates to the technical field of tunnel excavation, in particular to a tunnel top-lifting construction blasting excavation auxiliary device which comprises an excavation platform, a contour excavation unit, a medicament drilling unit and a lifting operation device, the contour excavation unit is connected with the excavation platform, and the medicament drilling unit is connected with the excavation platform through the lifting operation device; the contour excavation unit is used for grooving the tunnel, so that the tunnel forms a static blasting free face, the free face of the tunnel is improved, and the blasting efficiency is improved; the medicament drilling unit and the outline excavation unit can operate synchronously, so that the excavation efficiency is improved, and the operation period is shortened; meanwhile, the agent drilling unit is used for forming agent holes, the agent drilling unit is connected with the lifting operation device, excavation of the tunnel in a static blasting mode can be met, the hole forming requirements of different heights can also be met, the excavation efficiency is further improved, and the actual operation requirements are met; and the construction safety and reliability of excavation are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, relates to a tunnel top-lifting construction technology, and specifically is a tunnel top-lifting construction blasting excavation auxiliary device. Background Art

[0002] Tunnel coping is a critical process in tunnel construction. It primarily supports and protects the tunnel, ensuring safe and smooth construction. Common tunnel coping methods include steel frame coping, shotcrete coping, and precast slab coping. The tunnel coping process involves cleaning and preparing the tunnel, removing loose rock to ensure construction safety; erecting appropriate temporary support structures according to the construction plan to ensure tunnel stability and safety; and conducting construction operations, using steel frame coping, shotcrete coping, or precast slab coping.

[0003] Refer to the patent document with application number CN201510338658.8, which discloses a method and structure for selecting the top of a tunnel from a cross tunnel to the main tunnel, including the steps a: when the cross tunnel is constructed to the upper step of the main tunnel in accordance with the regulations, a small pilot tunnel is used to climb along the arc contour of the main tunnel top in the width direction of the main tunnel to directly select the top, and a crossbeam is set up at the intersection of the cross tunnel top and the main tunnel; b: initial support is provided for the main tunnel of the small pilot tunnel part; step c: the vertical support of the temporary support of the small pilot tunnel in the direction of the main tunnel's long mileage is removed, and the upper step of the main tunnel is expanded in the direction of the main tunnel's long mileage; step d: the vertical support of the temporary support of the small pilot tunnel in the direction of the main tunnel's short mileage is removed, and the upper step of the main tunnel is expanded in the direction of the main tunnel's short mileage using the step method. It can be seen from this that the patent document mainly adopts the steel frame selection method for selection, and its initial support is equivalent to a temporary support structure to ensure the stability and safety of the tunnel, and the vertical support is set up afterwards.

[0004] In the top-lift construction, whether it is to clear loose rocks, build temporary support structures, or carry out top-lift construction, the top of the tunnel needs to be excavated. During the tunnel excavation process, when facing hard rock and other environments, excavation is usually required by blasting. However, excavation by blasting has the problem of high construction risk, and blasting construction is likely to disturb the surrounding rock, resulting in over-excavation and under-excavation, which poses a serious safety hazard to subsequent construction. Therefore, the existing technology generally opens blasting holes in the tunnel, which can effectively avoid over-excavation and under-excavation and ensure construction safety. However, this operation method needs to be completed by different construction equipment, which not only increases the construction content and increases the difficulty of the operation, but also reduces construction efficiency. Utility Model Content

[0005] The utility model aims to provide a tunnel top construction blasting excavation auxiliary device to solve the technical problems of great difficulty and low construction efficiency when currently using blasting to excavate tunnels.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] The utility model discloses a tunnel top construction blasting excavation auxiliary device, which is used for static blasting construction of tunnel top, and comprises an excavation platform, a contour excavation unit, a medicament drilling unit and a lifting operation device, wherein the contour excavation unit is connected to the excavation platform, the medicament drilling unit is connected to the excavation platform via the lifting operation device, and the contour excavation unit is sleeved on the outside of the medicament drilling unit.

[0008] It is further defined that the contour excavation unit includes a grooving device and a contour slide frame, the contour slide frame is arranged at one end close to the excavation platform, the grooving device is movably connected to the contour slide frame, the contour slide frame is sleeved on the outside of the agent drilling unit, and the lifting operation device and the grooving device are respectively located on opposite sides of the contour slide frame.

[0009] It is further defined that the slotting device includes a slotting drill and a first telescopic mechanism; the slotting drill is connected to the output end of the first telescopic mechanism, the fixed end of the first telescopic mechanism is slidably connected to the contour slide frame, the first telescopic mechanism is vertically arranged to the contour slide frame, and the slotting drill and the first telescopic mechanism are arranged in the same direction.

[0010] It is further defined that the drug drilling unit includes a mounting backplate, a hole-opening drill and a second telescopic mechanism; the hole-opening drill is connected to the output end of the second telescopic mechanism, the fixed end of the second telescopic mechanism is connected to the mounting backplate, the hole-opening drill and the slotting drill are arranged in the same direction, and the mounting backplate is connected to the lifting operation device.

[0011] It is further defined that the drug drilling unit also includes a movable mounting part, which includes a connecting horizontal plate and a plurality of connecting vertical plates arranged side by side, the connecting horizontal plate is provided with a horizontal guide rail, the connecting vertical plate is slidingly connected to the connecting horizontal plate through the horizontal guide rail, the connecting vertical plate is provided with a vertical guide rail, and the second telescopic mechanism is slidingly connected to the connecting vertical plate through the vertical guide rail; the connecting horizontal plate is connected to the mounting back plate.

[0012] It is further defined that the second telescopic mechanism includes a telescopic connecting frame, a telescopic drive, a first screw rod, a limiting guide rail, a telescopic connecting clamp ring and a follower roller;

[0013] The connecting vertical plate is connected to the telescopic connecting frame through a vertical guide rail, the telescopic connecting frame is sleeved on the outside of the telescopic drive, the telescopic drive is connected to the first screw rod transmission, the first screw rod and the limiting guide rail are arranged in the same direction, the limiting guide rail is connected to the outside of the telescopic connecting frame, the hole drilling rig is threadedly connected to the first screw rod through a telescopic connecting clamp, the follower roller is located on both sides of the telescopic connecting clamp, the follower roller cooperates with the limiting guide rail, and the telescopic connecting clamp is slidably connected to the limiting guide rail through the follower roller.

[0014] It is further defined that the lifting work device includes a lifting work platform and a drilling lifting device, the drilling lifting device is vertically arranged, the drilling lifting device is connected to the excavation platform through the lifting work platform, and the drilling lifting device is arranged between the connecting cross plate and the installation back plate.

[0015] It is further defined that the drilling and lifting device includes a connecting back plate, a fixed plate, a second screw rod, a lifting drive, a lifting guide rod and a lifting guide block;

[0016] The fixed end of the lifting drive and the lifting guide rod are both connected to the connecting back plate, the second screw rod is connected to the output end of the lifting drive, the lifting guide block is threadedly connected to the second screw rod, and the lifting guide block is slidingly connected to the lifting guide rod, the fixed plate is connected between the lifting guide block and the connecting cross plate, the connecting back plate is connected to the installation back plate, and the connecting back plate is set on the lifting work platform.

[0017] It is further defined that the lifting work platform includes a mounting base and four lifting working mechanisms arranged in an array between the excavation platform and the mounting base, the lifting working mechanisms including lifting columns, racks arranged on the lifting columns, gears cooperating with the racks, connecting sleeves sleeved on the outside of the lifting columns, a support plate connected to the connecting sleeves, and a rotating handle connected to the gears; the racks are arranged in the same direction as the lifting columns, the connecting sleeves are located on the outside of the racks, the gears are rotatably connected to the connecting sleeves, and the mounting base is arranged on the support plate;

[0018] The installation base plate is provided with a longitudinal guide rail, the drilling lifting device is slidably connected to the installation back plate through the longitudinal guide rail, and the installation back plate is arranged on the outside of the longitudinal guide rail and connected to the installation base plate.

[0019] It is further defined that the lifting operation device also includes a jacking drive device, the jacking drive device is connected between the installation back plate and the fixed plate, and a spray device is provided on the installation back plate.

[0020] The beneficial effects of the present invention are:

[0021] 1. The utility model provides a tunnel top construction blasting excavation auxiliary device, which uses a contour excavation unit to groove the tunnel, so that the tunnel forms a static blasting free surface, improves the tunnel's air surface, and improves blasting efficiency; and the agent drilling unit can operate synchronously with the contour excavation unit, thereby improving excavation efficiency and shortening the operation cycle; at the same time, the agent drilling unit is used to open agent holes, and is connected to the lifting operation device, which can meet the tunnel excavation by static blasting and the need for opening holes at different heights, further improving excavation efficiency, meeting actual operation needs, and improving the construction safety and reliability of excavation.

[0022] 2. The utility model utilizes a grooving device and a contour slide frame to realize reliable grooving on the tunnel, and at the same time will not affect the opening of the agent hole in the tunnel by the agent drilling unit in the middle position. The structural design is optimized to ensure that the grooving and the hole opening can be performed synchronously, ensuring smooth and reliable execution and improving work efficiency; and the height and spacing of the hole opening rig can be fine-tuned through the movable mounting parts to improve the accuracy of the hole opening and further improve the quality and efficiency of static blasting; the use of multiple hole opening rigs for synchronous drilling further improves the work efficiency, and the second telescopic mechanism can also be used to adjust the depth of the hole opening to meet different construction needs and increase the scope of application.

[0023] 3. The utility model utilizes a lifting operation device to drive the hole drilling rig on the connecting horizontal plate to be quickly adjusted to the area where drilling is required, and then utilizes the drilling lifting device to further adjust the height of the hole drilling rig on the connecting horizontal plate. The two-stage height adjustment is used to realize the rapid and accurate adjustment of the position of the hole drilling rig, thereby improving the working efficiency; during the drilling process, the jacking drive device can further improve the feed stability of the hole drilling rig and improve the drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model tunnel top construction blasting excavation auxiliary device;

[0025] Figure 2 This is a schematic diagram of the structure of the contour excavation unit of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the pharmaceutical drilling unit of the utility model;

[0027] Figure 4 This is a schematic diagram of the connection structure of the drilling lifting device of the utility model;

[0028] Figure 5 This is a structural diagram of the drilling lifting device of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the lifting operation device of the utility model;

[0030] In the figure, 100 is an excavation platform; 200 is a contour excavation unit; 210 is a slotting device; 211 is a slotting drill; 212 is a first telescopic mechanism; 213 is a slotting reinforcement rib; 220 is a contour slide frame; 300 is a pharmaceutical drilling unit; 310 is a mounting back plate; 320 is a hole drilling rig; 330 is a movable mounting member; 331 is a connecting horizontal plate; 332 is a connecting vertical plate; 333 is a horizontal guide rail; 334 is a vertical guide rail; 340 is a second telescopic mechanism; 341 is a telescopic connecting frame; 342 is a telescopic drive; 343 is a first screw rod; 344 is a limit guide Rail; 345-telescopic connecting clamp; 346-follow-up roller; 400-lifting working device; 410-lifting working platform; 411-lifting pillar; 412-rack; 413-gear; 414-connecting sleeve; 415-support plate; 416-turn handle; 420-mounting base plate; 421-longitudinal guide rail; 430-drilling lifting device; 431-connecting back plate; 432-fixing plate; 433-second screw; 434-lifting drive; 435-lifting guide rod; 436-lifting guide block; 440-jacking drive device; 500-spraying device. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] refer to Figure 1 The present embodiment provides a tunnel top construction blasting and excavation auxiliary device for static blasting construction of tunnel top, which includes an excavation platform 100, a contour excavation unit 200, a chemical drilling unit 300 and a lifting operation device 400. The chemical drilling unit 300 is connected to the excavation platform 100 through the lifting operation device 400, and the contour excavation unit 200 is directly connected to the excavation platform 100. The contour excavation unit 200 is sleeved on the outside of the chemical drilling unit 300, so that the chemical drilling unit 300 can open chemical holes at different positions in the tunnel according to needs, and can also cooperate with the contour excavation unit 200 to synchronously perform grooving and drilling, thereby improving work efficiency, shortening construction period, avoiding over-excavation and under-excavation, and meeting construction needs.

[0034] By filling the reagent holes with expansion agent and using static blasting for excavation, the excavation reliability and safety of the tunnel can be further improved.

[0035] Specifically, the contour excavation unit 200 is used to groove the tunnel contour to improve the air-facing surface of the tunnel and improve the efficiency of static blasting; at the same time, the agent drilling unit 300 is used to open agent holes in the tunnel inside the contour. Multiple agent holes need to be opened, thereby reducing the difficulty and cost of manual hole opening and further improving work efficiency.

[0036] For further explanation, see Figure 1 and Figure 2 The contour excavation unit 200 includes a grooving device 210 and a contour slide frame 220. The contour slide frame 220 is usually an arched structure and can also be replaced according to actual needs. The contour slide frame 220 is used to provide an installation position and reliable support for the grooving device 210.

[0037] In order to further improve the support reliability, it is preferred to set slotted reinforcement ribs 213 on the contour slide frame 220, and the slotted reinforcement ribs 213 are connected between the contour slide frame 220 and the lifting operation device 400. Preferably, the slotted reinforcement ribs 213 are symmetrically arranged along the symmetry axis of the contour slide frame 220 to provide stable support for the contour slide frame 220.

[0038] Preferably, a slotted base plate is provided at the bottom of the contour slide frame 220. The contour slide frame 220 and the slotted base plate are an integrated structure. The contour slide frame 220 and the slotted base plate form an L-shaped structure. The slotted base plate is horizontally connected to the top end face of the excavation platform 100. At this time, the slotted reinforcement ribs 213 are connected between the contour slide frame 220 and the slotted base plate. The connection area is increased through the slotted base plate, thereby increasing the connection stability.

[0039] The contour slide frame 220 is vertically installed on the top end surface of the excavation platform 100 through the grooved bottom plate, and the groove device 210 is connected to the contour slide frame 220 in the horizontal direction. Preferably, the groove device 210 is slidingly connected to the contour slide frame 220, so that the groove device 210 can move along the frame of the contour slide frame 220, thereby realizing the groove corresponding to the contour on the tunnel, so that the tunnel forms a static blasting free surface, and improves the quality of static blasting.

[0040] The number of slotting devices 210 is at least one. When the length of slotting to be cut is large, two or more slotting devices 210 can be set up to perform slotting operations simultaneously to improve work efficiency. When the number of slotting devices 210 is two or more, all slotting devices 210 are set up in sequence along the contour slide frame 220.

[0041] Specifically, the slotting device 210 includes a slotting drill 211 and a first telescopic mechanism 212. The slotting drill 211 is connected to the first telescopic mechanism 212, and the slotting drill 211 can be optionally a water-grinding drill; the first telescopic mechanism 212 is horizontally arranged to drive the slotting drill 211 to move in a direction perpendicular to the tunnel to control the slotting depth; the first telescopic mechanism 212 is connected to the contour slide frame 220, and the first telescopic mechanism 212 can be optionally a cylinder telescopic mechanism or an electric telescopic mechanism.

[0042] The slotting drill 211 uses the contour slide frame 220 to perform slotting, ensuring the slotting quality and controllability of the slotting shape; at the same time, the first telescopic mechanism 212 can meet different slotting depth requirements; and different numbers of slotting drills 211 can be added according to construction requirements to perform synchronous slotting operations, thereby improving work efficiency and meeting actual operation requirements.

[0043] To further illustrate, the drug drilling unit 300 includes a mounting backplate 310 , a hole drilling machine 320 and a second telescopic mechanism 340 , and the hole drilling machine 320 is connected to the mounting backplate 310 via the second telescopic mechanism 340 .

[0044] The number of the hole drill 320 is at least one, and usually the number of the hole drill 320 is selected to be multiple. The number of the second telescopic mechanisms 340 is the same as the number of the hole drill 320, and the two are arranged in a one-to-one correspondence.

[0045] The mounting back plate 310 is vertically arranged, and the hole drilling machine 320 is installed perpendicular to the mounting back plate 310 ; the mounting back plate 310 is used to provide an installation position and drilling support for the hole drilling machine 320 .

[0046] During the actual hole drilling operation, when the number of medicine holes to be opened is less than the number of hole drilling rigs 320, the second telescopic mechanism 340 is used to control some of the hole drilling rigs 320 to pass through the contour slide frame 220 to perform the hole drilling operation, and the remaining hole drilling rigs 320 remain in a silent state, reducing the number of times the hole drilling rigs 320 are disassembled and assembled, thereby improving the operation efficiency; when the number of hole drilling rigs 320 is the same as the number of medicine holes to be opened, the hole drilling rigs 320 can be arranged on the installation backplane 310 according to the opening requirements; preferably, the number of hole drilling rigs 320 is less than the number required for opening medicine holes.

[0047] The contour slide frame 220 is mounted on the outside of the mounting back plate 310, so that the hole drilling rig 320 can drill holes in the corresponding tunnel on the inside of the contour slide frame 220; the mounting back plate 310 is installed on the slotted bottom plate through the lifting operation device 400, and the slotted reinforcement rib 213 is located on the outside of the lifting operation device 400.

[0048] refer to Figure 1The drug drilling unit 300 also includes a movable mounting part 330. All second telescopic mechanisms 340 are connected to the mounting back plate 310 through the movable mounting part 330, so that the hole drilling rig 320 can adjust the installation position on the mounting back plate 310 according to needs to realize the opening of drug holes in different positions, and it is also convenient to disassemble, assemble and replace the hole drilling rig 320.

[0049] refer to Figure 3 The movable mounting part 330 includes a connecting horizontal plate 331 and a plurality of connecting vertical plates 332 arranged side by side. The back of the connecting horizontal plate 331 is connected to the mounting back plate 310. A horizontal guide rail 333 is provided on the connecting horizontal plate 331. The connecting vertical plates 332 are clamped with the connecting horizontal plate 331 through the horizontal guide rail 333, so that the connecting vertical plates 332 can slide along the horizontal guide rail 333; a vertical guide rail 334 is provided on the connecting vertical plate 332. The second telescopic mechanism 340 is slidably connected to the connecting vertical plate 332 through the vertical guide rail 334, which is used to adjust the distance of the hole drilling rig 320 in the horizontal and vertical directions.

[0050] The number of the movable mounting member 330 is at least one. When the number of the movable mounting member 330 is two, the two movable mounting members 330 are arranged up and down, which reduces the amount of adjustment of the hole drilling machine 320 in the vertical direction and improves working efficiency.

[0051] Further description, the second telescopic mechanism 340 includes a telescopic connecting frame 341, a telescopic drive 342, a first screw rod 343, a limiting guide rail 344, a telescopic connecting clamp 345 and a follower roller 346; the connecting vertical plate 332 is connected to the telescopic connecting frame 341 through the vertical guide rail 334, the telescopic connecting frame 341 is sleeved on the outside of the telescopic drive 342 and connected to the telescopic drive 342, the telescopic drive 342 can select a gear set or a belt to be connected to one end of the first screw rod 343 for driving the first screw rod 343 to rotate, and the first screw rod 343 is connected to the limiting guide rail 344. The telescopic connecting frame 341 is arranged in the same direction. The limiting guide rail 344 is connected to the outside of the telescopic connecting frame 341. The hole drill 320 is threadedly connected to the first screw rod 343 through the telescopic connecting ring 345. The follower rollers 346 are located on both sides of the telescopic connecting ring 345. The follower rollers 346 cooperate with the limiting guide rail 344. The telescopic connecting ring 345 is slidably connected to the limiting guide rail 344 through the follower rollers 346, preventing the telescopic connecting ring 345 from rotating with the first screw rod 343. At the same time, the telescopic connecting ring 345 assists the telescopic connecting ring 345 in driving the hole drill 320 to move forward and backward when the first screw rod 343 rotates.

[0052] The first telescopic mechanism 212 can be connected to the slotting drill 211 with the same structure as the second telescopic mechanism 340 .

[0053] It should be noted that the chemical drilling unit 300 can be set in front of the contour slide frame 220, that is, the chemical drilling unit 300 is close to the head end of the excavation platform 100. During operation, the slotting drill rig 211 is fed forward through the first telescopic mechanism 212; after the slotting is completed, the slotting drill rig 211 withdraws, and the hole drilling rig 320 is fed through the second telescopic mechanism 340; or both can be fed at the same time. When both are fed at the same time, the feeding amount of both is determined according to the length of the tunnel excavation footage per cycle, and the drilling depth of both is slightly longer than the excavation depth by 10cm to 20cm to prevent under-excavation due to insufficient blasting depth.

[0054] Further preferably, a spray device 500 is provided on the mounting back plate 310 for performing dust suppression spraying operations during static blasting to avoid environmental pollution and provide a good environment for construction.

[0055] refer to Figure 1 、 Figure 4 and Figure 5 , taking the example of the drug drilling unit 300 being arranged behind the contour slide frame 220, in order to ensure the drilling depth of the hole drill 320 and further quickly adjust the height of the hole drill 320 on the same connecting horizontal plate 331, it is preferred that the lifting work device 400 includes a lifting work platform 410 and a drilling lifting device 430, the drilling lifting device 430 is installed on the lifting work platform 410, and the lifting work platform 410 is installed on the slotted bottom plate.

[0056] Specifically, the drilling lifting device 430 includes a connecting back plate 431 , a fixing plate 432 , a second screw rod 433 , a lifting drive 434 , a lifting guide rod 435 and a lifting guide block 436 .

[0057] There are two lifting guide rods 435, and the two lifting guide rods 435 are arranged on opposite sides of the connecting back plate 431 along the length direction of the connecting back plate 431. The second screw rod 433 is arranged between the two lifting guide rods 435. One end of the lifting guide rod 435 is rotatably connected to the connecting back plate 431, and the other end of the lifting guide rod 435 is connected to the output end of the lifting drive 434. The output end of the lifting drive 434 is connected to the connecting back plate 431. While the lifting guide block 436 is threadedly connected to the second screw rod 433, the lifting guide block 436 is also slidably connected to the lifting guide rod 435, so that the rotation of the lifting drive 434 can drive the lifting guide block 436 to move back and forth along the length direction of the connecting back plate 431, and the lifting guide block 436 is connected to the fixed plate 432.

[0058] At this time, the connecting back plate 431 is connected to the installation back plate 310, and the connecting back plate 431 is also connected to the lifting work platform 410, and the fixing plate 432 is connected to the connecting horizontal plate 331, which is used to drive all the hole drilling rigs 320 on the connecting horizontal plate 331 to move up and down for rapid position adjustment, so that the hole drilling rigs 320 can use the connecting vertical plate 332 to fine-tune the height position.

[0059] The number of the drilling lifting devices 430 is preferably two, and the two drilling lifting devices 430 are correspondingly arranged at both ends of the connecting horizontal plate 331 to ensure that the connecting horizontal plate 331 moves up and down and remains horizontal.

[0060] Preferably, the lifting operation device 400 also includes a jacking drive device 440, the gas tank is connected to the mounting back plate 310, and the cylinder is located on the left and right sides of the gas tank, which is used to push the drilling lifting device 430 forward, so that the hole drilling rig 320 can move quickly to the tunnel position. At the same time, it can provide stable support for the hole drilling rig 320 during drilling feeding, making the hole drilling more reliable.

[0061] refer to Figure 4 and Figure 6 The lifting work platform 410 includes a mounting base 420 and four lifting work mechanisms. A longitudinal guide rail 421 is set on the mounting base 420. The drilling lifting device 430 is connected to the mounting base 420. The cylinder is located above the mounting base 420. The bottom of the connecting back plate 431 cooperates with the longitudinal guide rail 421 to ensure that the drilling lifting device 430 moves stably and reliably; at this time, the slotted reinforcement rib 213 is located on the outside of the longitudinal guide rail 421 to avoid interference with the movement of the drilling lifting device 430.

[0062] The lifting operation mechanism includes a lifting operation platform 410, a rack 412 arranged on a lifting pillar 411, a gear 413 cooperating with the rack 412, a connecting sleeve 414 sleeved on the outside of the lifting pillar 411, a support plate 415 connected to the connecting sleeve 414 and a rotating handle 416 connected to the gear 413.

[0063] Among them, four lifting operation mechanism arrays are arranged on the slotted bottom plate, the rack 412 is vertically arranged along the height direction of the lifting pillar 411, and the connecting sleeve 414 is also located on the outside of the rack 412. The gear 413 is rotatably connected to the connecting sleeve 414, so that the gear 413 is engaged with the rack 412. By turning the handle 416 to rotate the gear 413, the connecting sleeve 414 can be driven to move up and down along the lifting pillar 411, thereby driving the support plate 415 to move up and down; the four support plates 415 are arranged at the four top corners of the installation base plate 420, which are used to quickly change the height of the hole drilling rig 320 to realize the opening of medicine holes at different positions.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the present invention.

Claims

1. A tunnel top construction blasting excavation auxiliary device, used for static blasting construction of tunnel top, characterized by: The invention comprises an excavation platform (100), a contour excavation unit (200), a medicament drilling unit (300) and a lifting operation device (400), wherein the contour excavation unit (200) is connected to the excavation platform (100), the medicament drilling unit (300) is connected to the excavation platform (100) via the lifting operation device (400), and the contour excavation unit (200) is sleeved on the outside of the medicament drilling unit (300).

2. The tunnel top construction blasting excavation auxiliary device according to claim 1 is characterized in that: The contour excavation unit (200) includes a slotting device (210) and a contour slide frame (220), wherein the contour slide frame (220) is arranged at one end close to the excavation platform (100), the slotting device (210) is movably connected to the contour slide frame (220), and the contour slide frame (220) is sleeved on the outer side of the agent drilling unit (300), and the lifting operation device (400) and the slotting device (210) are respectively located on opposite sides of the contour slide frame (220).

3. The tunnel top construction blasting excavation auxiliary device according to claim 2 is characterized in that: The slotting device (210) comprises a slotting drill (211) and a first telescopic mechanism (212); the slotting drill (211) is connected to the output end of the first telescopic mechanism (212); the fixed end of the first telescopic mechanism (212) is slidably connected to a profile slide frame (220); the first telescopic mechanism (212) and the profile slide frame (220) are arranged vertically; and the slotting drill (211) and the first telescopic mechanism (212) are arranged in the same direction.

4. The tunnel top construction blasting excavation auxiliary device according to claim 3 is characterized in that: The drug drilling unit (300) includes a mounting backplate (310), a hole drilling machine (320) and a second telescopic mechanism (340); the hole drilling machine (320) is connected to the output end of the second telescopic mechanism (340), the fixed end of the second telescopic mechanism (340) is connected to the mounting backplate (310), the hole drilling machine (320) and the slotting drilling machine (211) are arranged in the same direction, and the mounting backplate (310) is connected to the lifting operation device (400).

5. The tunnel top construction blasting excavation auxiliary device according to claim 4 is characterized in that: The drug drilling unit (300) further includes a movable mounting member (330), which includes a connecting transverse plate (331) and a plurality of connecting vertical plates (332) arranged side by side. The connecting transverse plate (331) is provided with a transverse guide rail (333), and the connecting vertical plates (332) are slidably connected to the connecting transverse plate (331) via the transverse guide rail (333). The connecting vertical plates (332) are provided with a vertical guide rail (334), and the second telescopic mechanism (340) is slidably connected to the connecting vertical plates (332) via the vertical guide rail (334); the connecting transverse plate (331) is connected to the mounting back plate (310).

6. The tunnel top construction blasting excavation auxiliary device according to claim 5, characterized in that: The second telescopic mechanism (340) comprises a telescopic connecting frame (341), a telescopic drive (342), a first screw rod (343), a position-limiting guide rail (344), a telescopic connecting clamp (345) and a follower roller (346); The connecting vertical plate (332) is connected to the telescopic connecting frame (341) through a vertical guide rail (334). The telescopic connecting frame (341) is sleeved on the outside of the telescopic drive (342). The telescopic drive (342) is transmission-connected to the first screw rod (343). The first screw rod (343) and the limiting guide rail (344) are arranged in the same direction. The limiting guide rail (344) is connected to the outside of the telescopic connecting frame (341). The hole drilling machine (320) is threadedly connected to the first screw rod (343) through a telescopic connecting clamp (345). The follower roller (346) is located on both sides of the telescopic connecting clamp (345). The follower roller (346) cooperates with the limiting guide rail (344). The telescopic connecting clamp (345) is slidingly connected to the limiting guide rail (344) through the follower roller (346).

7. The tunnel top construction blasting excavation auxiliary device according to claim 5, characterized in that: The lifting operation device (400) includes a lifting operation platform (410) and a drilling lifting device (430). The drilling lifting device (430) is vertically arranged. The drilling lifting device (430) is connected to the excavation platform (100) through the lifting operation platform (410). The drilling lifting device (430) is arranged between the connecting horizontal plate (331) and the installation back plate (310).

8. The tunnel top construction blasting excavation auxiliary device according to claim 7, characterized in that: The drilling lifting device (430) comprises a connecting back plate (431), a fixing plate (432), a second screw rod (433), a lifting drive (434), a lifting guide rod (435) and a lifting guide block (436); The fixed end of the lifting drive (434) and the lifting guide rod (435) are both connected to the connecting back plate (431), the second screw rod (433) is connected to the output end of the lifting drive (434), the lifting guide block (436) is threadedly connected to the second screw rod (433), and the lifting guide block (436) is slidably connected to the lifting guide rod (435), the fixed plate (432) is connected between the lifting guide block (436) and the connecting transverse plate (331), the connecting back plate (431) is connected to the installation back plate (310), and the connecting back plate (431) is set on the lifting work platform (410).

9. The tunnel top construction blasting excavation auxiliary device according to claim 8, characterized in that: The lifting platform (410) includes a mounting base (420) and four lifting mechanisms arranged in an array between the excavation platform (100) and the mounting base (420), wherein the lifting mechanism includes a lifting support (411), a rack (412) arranged on the lifting support (411), a gear (413) matched with the rack (412), a connecting sleeve (414) sleeved on the outside of the lifting support (411), a support plate (415) connected to the connecting sleeve (414), and a rotating handle (416) connected to the gear (413); the rack (412) and the lifting support (411) are arranged in the same direction, the connecting sleeve (414) is located on the outside of the rack (412), the gear (413) and the connecting sleeve (414) are rotatably connected, and the mounting base (420) is arranged on the supporting plate (415); A longitudinal guide rail (421) is provided on the installation base plate (420), and the drilling lifting device (430) is slidably connected to the installation back plate (310) via the longitudinal guide rail (421). The installation back plate (310) is provided outside the longitudinal guide rail (421) and connected to the installation base plate (420).

10. The tunnel top construction blasting excavation auxiliary device according to claim 8, characterized in that: The lifting operation device (400) further includes a lifting drive device (440), wherein the lifting drive device (440) is connected between the installation back plate (310) and the fixed plate (432), and a spray device (500) is provided on the installation back plate (310).

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