Chamber surrounding rock drilling construction platform

Abstract

The invention relates to a hole drilling construction platform for surrounding rock of a cavern, comprising a hole drilling device, two circular-arch-shaped steel arches arranged at intervals in front and back, a positioning platform arranged between the two steel arches, the hole drilling device being installed at the center position of the positioning platform, the positioning platform being hoisted between the two steel arches through walking devices arranged on the two steel arches respectively, the hole drilling device being always at the midpoint position between the two steel arches during use, the walking devices being able to walk along the extension direction of the steel arches to adjust the position of the positioning platform in the left-right direction, the hoisting base being fixed with hoisting arms perpendicular to the hoisting base, the ends of the two hoisting arms away from the hoisting base being hingedly connected with the corresponding ends of the positioning platform, the axis of the hinge being perpendicular to the hoisting arm; the invention solves the technical problem that the hole drilling position and angle are not easy to control in the prior art when drilling according to the relative position manually.

Description

Technical Field

[0001] This invention relates to the field of drilling technology for soil or rock, and more specifically to a drilling platform for surrounding rock in caverns. Background Technology

[0002] In the field of drilling technology for soil or rock, specifically when drilling into the surrounding rock of a cavern, drilling equipment is needed to directionally drill holes in the top of the cavern. During drilling, the drill bit and drill rod must be perpendicular to the rock surface of the dome; that is, the drilling angle must pass through the center of the dome of the cavern, resulting in radial anchor holes. Ultimately, the anchor rods installed in the anchor holes form an arch shape. However, in existing technologies, drilling is usually done manually according to relative positions. This method makes it difficult to control the drilling position and angle, easily leading to discrepancies between the drilling angle and the design. Summary of the Invention

[0003] This invention provides a drilling platform for cavern surrounding rock to solve the technical problem in the prior art where drilling is done manually according to relative positions, making it difficult to control the drilling position and angle.

[0004] The drilling platform for surrounding rock in caverns of the present invention adopts the following technical solution:

[0005] A drilling platform for tunnel surrounding rock includes a drilling device, which comprises a drilling frame, a drill bit, and a drill bit drive motor for rotating the drill bit. The platform also includes two arched steel frames spaced apart, with a positioning platform between them. The drilling device is installed at the center of the positioning platform, and the drill bit is positioned perpendicular to the positioning platform. The positioning platform is suspended between the two steel arches by a traveling device mounted on each arch. During use, the drilling device is always positioned at the midpoint between the two arches. The traveling device includes a lifting base mounted on the arches, which can travel along the extension direction of the arches to adjust the position of the positioning platform in the left-right direction. A boom perpendicular to the lifting base is fixed to the lifting base, and the ends of the two booms furthest from the lifting base are hinged to the corresponding ends of the positioning platform, with the hinge axes perpendicular to the booms.

[0006] Furthermore, the positioning platform includes two L-shaped telescopic arms connected end to end, with the head end of one telescopic arm movably inserted into the tail end of the other telescopic arm, so that when the head end of the telescopic arm is pulled, the two telescopic arms can slide relative to each other to extend the positioning platform; the drilling device also includes a positioning sleeve, with the drilling frame fixed on the positioning sleeve, and the two telescopic arms inserted into the positioning sleeve. A positioning gear is provided at the center position between the two telescopic arms, and the positioning gear is rotatably mounted on the side wall of the positioning sleeve. The opposite side walls of the two telescopic arms each have a transverse rack that meshes with the positioning gear, and the two telescopic arms can extend and retract synchronously relative to the positioning gear.

[0007] Furthermore, each telescopic boom has a rotating seat rotatably connected to one end near the corresponding boom. A hinge seat is fixed on the rotating seat. The boom and the corresponding hinge seat are connected by a hinge shaft, which is perpendicular to the boom. In use, the angle between the boom and the positioning platform is adjusted by adjusting the position of the two traveling devices on their respective steel arches, so that the two traveling devices are staggered in the left and right directions.

[0008] Furthermore, the steel arch frame is formed by integrally bending an I-beam, and the front and rear sides of the hoisting base are respectively provided with traveling wheels. The traveling wheels on the front and rear sides are respectively located in the grooves on the front and rear sides of the I-beam and travel along the extension direction of the grooves.

[0009] Furthermore, the hoisting base is a telescopic structure, including a first mounting base and a second mounting base. The second mounting base is slidably installed in the first mounting base, and the traveling wheels are installed on the front and rear sides of the second mounting base through wheel frames.

[0010] Furthermore, the wheel frames on the front and rear sides are movably mounted on the second mounting base in the front-rear direction. The second mounting base is equipped with an electric telescopic push rod, which is connected to the wheel frame in a one-to-one correspondence, so as to drive the front and rear wheel frames to move closer and further apart in the front-rear direction.

[0011] Furthermore, the drilling frame has a C-shaped sleeve structure, and vertical racks are respectively provided on opposite sides of the inner wall of the drilling frame. A movable frame is provided inside the drilling frame, and the drill bit is rotatably mounted on the movable frame in the vertical direction. The drill bit drive motor is located inside the movable frame, and a drive gear that meshes with the vertical rack is also provided inside the movable frame. The drive gear is connected to the drive motor to drive the movable frame to reciprocate along the extension direction of the vertical rack.

[0012] The beneficial effects of this invention are as follows: By setting two steel arch frames with the same shape as the surrounding rock of the cavern, the two steel arch frames are fixed at intervals along the depth direction of the cavern during use. Then, a positioning platform is hoisted between the two steel arch frames by two sets of walking devices. Due to the hoisting configuration of the positioning platform, the angle between the positioning platform and the two side booms is equal, ensuring that the drilling device set at the center of the positioning platform is always perpendicular to the positioning platform and always located at the midpoint between the two steel arch frames. In this way, during operation, it is only necessary to move the positioning platform along the steel arch frames to the set position, and the front-back position and drilling direction of the drilling device are determined. That is, the drilling device always moves in an arc along the same depth position of the dome of the surrounding rock of the cavern, and the drill bit always drills in a direction perpendicular to the dome surface of the cavern. It is not necessary to further locate the front-back position and drilling direction of the drilling device, which allows for better control of the drilling angle and position, and makes it easier to ensure that the drilling position and angle conform to the design.

[0013] In addition, the positioning platform is a telescopic structure, and the walking device is hinged to the rotating seat of the positioning platform. This arrangement allows for a wider range of adjustment of the front-to-back distance between the two steel arches. Furthermore, by adjusting the position of each walking device on the steel arch, the two walking devices can be staggered to the left and right by a set angle, suspending the positioning platform at a predetermined angle. This causes the direction of the tension force exerted by each walking device on the steel arch to be tilted and staggered. The resultant force on each steel arch from the corresponding walking device can be decomposed into components along the front-to-back direction and along the left and right direction. Compared to arranging the two walking devices side by side, staggering them to the left and right reduces the component force on the steel arch in each direction, preventing the walking device from exerting a large tension on one side of the steel arch, which could affect the support stability between the steel arch and the surrounding rock. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is an isometric view of the overall structure of Embodiment 1 of the drilling platform for tunnel surrounding rock of the present invention;

[0016] Figure 2 This is a front view of the overall structure of Embodiment 1 of the drilling platform for tunnel surrounding rock of the present invention;

[0017] Figure 3This is a top view of the overall structure of Embodiment 1 of the drilling platform for tunnel surrounding rock of the present invention;

[0018] Figure 4 This is a schematic diagram showing the connection between the walking device, positioning platform, and drilling device in Embodiment 1 of the drilling platform for cavern surrounding rock of the present invention;

[0019] Figure 5 This is a schematic diagram of the positioning platform in Embodiment 1 of the drilling platform for cavern surrounding rock of the present invention;

[0020] Figure 6 This is a schematic diagram of the overall structure of the tunnel surrounding rock drilling construction platform of the present invention after changing the relative positions of the two walking devices in Embodiment 1.

[0021] Figure 7 This is a schematic diagram of the overall structure of the tunnel surrounding rock drilling construction platform of the present invention after changing the relative positions of the two walking devices and extending the hoisting base;

[0022] In the diagram: 100, steel arch frame; 200, traveling device; 210, first mounting base; 220, traveling wheel; 230, second mounting base; 240, boom; 300, drilling device; 310, drill bit; 320, moving frame; 330, drilling frame; 340, positioning sleeve; 400, positioning platform; 410, telescopic arm; 420, positioning gear; 430, rotating seat; 440, hinge shaft; 450, transverse rack. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Embodiment 1 of the drilling platform for cavern surrounding rock of the present invention, as follows: Figures 1 to 7 As shown, the drilling platform for cavern surrounding rock in this invention is used for drilling into the arched surrounding rock of a cavern. It includes a steel arch frame 100, a walking device 200, a positioning platform 400, and a drilling device 300. Two steel arch frames 100 and two walking devices 200 are provided. The steel arch frame 100 is an arched structure that conforms to the shape of the inner wall of the cavern surrounding rock. Assuming that the depth direction of the cavern opening to be drilled is the front-to-back direction, the two steel arch frames 100 are arranged side by side and spaced apart along the front-to-back direction. A walking device 200 is suspended on each steel arch frame 100. The two ends of the positioning platform 400 are connected to the walking devices 200 respectively. The positioning platform 400 is suspended between the two steel arch frames 100 through the two walking devices 200.

[0025] The traveling device 200 includes a hoisting base suspended on a steel arch frame 100. The hoisting base can travel along the extension direction of the steel arch frame 100 to adjust the position of the positioning platform 400 in the left-right direction. A boom 240 perpendicular to the hoisting base is fixed on the hoisting base. The ends of the two booms 240 away from the hoisting base are respectively hinged to the corresponding ends of the positioning platform 400, with the hinge axis perpendicular to the boom 240. The drilling device 300 is installed at the center of the positioning platform 400. The drilling device 300 includes a drilling frame 330, a drill bit 310, and a drill bit drive motor for rotating the drill bit 310. In this invention, the drill bit 310 is always positioned perpendicular to the positioning platform 400. During operation, the positioning platform 400 forms the same angle with the two side booms 240, and the two steel arch frames 100 are at the same height. The drilling device 300 is positioned at the center of the positioning platform 400, ensuring that the drilling device 300 is always at the midpoint between the two steel arch frames 100, and the drill bit 310 is always perpendicular to the dome surface of the cavern. In other words, as the two traveling devices 200 and the positioning platform 400 move synchronously on the steel arch frames 100, the trajectory of the drilling device 300 is an arc with the same curvature as the steel arch frame 100, and this arc lies on the line connecting the midpoints of the two steel arch frames 100.

[0026] In this embodiment, the positioning platform 400 includes two L-shaped telescopic arms 410 connected end to end. The head end of one telescopic arm 410 is movably inserted into the tail end of the other telescopic arm 410, so that when either telescopic arm 410 is pulled or the head ends of both telescopic arms 410 are pulled simultaneously, the two telescopic arms 410 can slide relative to each other to extend the positioning platform 400. The drilling device 300 also includes a positioning sleeve 340, and the drilling frame 330 is fixed on the positioning sleeve 340. The two telescopic arms 410 are inserted into the positioning sleeve 340. A positioning gear 420 is provided at the center position between the two telescopic arms 410. The positioning gear 420 is rotatably mounted on the side wall of the positioning sleeve 340. The opposite side walls of the two telescopic arms 410 each have a transverse rack 450 that meshes with the positioning gear 420. The two telescopic arms 410 can extend and retract synchronously relative to the positioning gear 420.

[0027] Each telescopic boom 410 has a rotating seat 430 rotatably connected to one end near the corresponding boom 240. A hinge seat is fixed on the rotating seat 430. The boom 240 and the corresponding hinge seat are connected by a hinge shaft 440, which is perpendicular to the boom 240. In use, the angle between the boom 240 and the positioning platform 400 is adjusted by adjusting the position of the two traveling devices 200 on their respective steel arch frames 100, so that the two traveling devices 200 are staggered in the left and right directions.

[0028] This invention, by setting the positioning platform 400 as a telescopic structure and hingedly connecting the boom 240 of the traveling device 200 to the rotating seat 430 of the positioning platform 400, allows for a wider range of adjustment of the front-to-back distance between the two steel arch frames 100. Furthermore, by adjusting the positions of the two traveling devices 200 on the steel arch frames 100, the two traveling devices 200 can be staggered by a predetermined angle, suspending the positioning platform 400 at a set angle. This results in the tension direction of each traveling device 200 on the steel arch frame 100 being tilted and staggered. The resultant force on each steel arch frame 100 from the corresponding traveling device 200 can be decomposed into components along the front-to-back direction and along the left-to-right direction. Compared to arranging the two traveling devices 200 side-by-side, staggering them reduces the component force on the steel arch frame 100 in each direction, preventing excessive tension on one side of the steel arch frame 100 by the traveling devices 200, which could affect the support stability between the steel arch frame 100 and the surrounding rock.

[0029] In this embodiment, the steel arch frame 100 is integrally bent from an I-beam. The hoisting base has wheels 220 on its front and rear sides, respectively. These wheels are located within grooves on the front and rear sides of the I-beam and travel along the extension direction of the grooves. The hoisting base is a telescopic structure, including a first mounting base 210 and a second mounting base 230. The second mounting base 230 is slidably mounted in the first mounting base 210, and the wheels 220 are mounted on the front and rear sides of the second mounting base 230 via wheel frames. During drilling by the drilling device 300, the second mounting base 230 can be extended beyond the first mounting base 210, lengthening the hoisting base and increasing the distance between the two sets of wheels 220 in the traveling direction of the traveling device 200. This increases the support surface between the hoisting base and the steel arch frame 100, improving the stability of the drilling device 300 during drilling.

[0030] To facilitate the installation of the walking device 200 onto the steel arch frame 100, in this embodiment, the wheel frames on the front and rear sides are movably mounted on the second mounting base 230 in the front-rear direction. Specifically, the second mounting base 230 is equipped with an electric telescopic push rod, which is connected to the wheel frames one-to-one to drive the front and rear wheel frames to move closer and further apart in the front-rear direction. When the walking device 200 needs to be installed, the electric telescopic push rod drives the wheel frames of the front and rear walking wheels 220 to move further apart, increasing the distance between the two walking wheels 220. After aligning the walking wheels 220 with the grooves of the steel arch frame 100, the electric telescopic push rod drives the two wheel frames to move closer together, and the two walking wheels 220 respectively enter the grooves of the steel arch frame 100, so that the lifting base is hoisted onto the steel arch frame 100.

[0031] In this embodiment, the second mounting base 230 is also equipped with a travel drive motor for driving the travel wheel 220 to rotate. A transmission gear assembly is arranged inside the wheel frame. The travel drive motor is connected to the travel wheel 220 through the transmission gear assembly to drive the travel wheel 220. It should be noted that when the electric telescopic push rod pushes the wheel frame to guide its movement on the second mounting base 230, the transmission gear assembly and the output shaft of the travel drive motor are engaged and disengaged. When the wheel frame is reset, the transmission gear assembly is connected to the output shaft of the travel drive motor.

[0032] In this embodiment, the drilling frame 330 has a C-shaped sleeve structure. Vertical racks are provided on opposite sides of the inner wall of the drilling frame 330. A movable frame 320 is located inside the drilling frame 330. The drill bit 310 is rotatably mounted on the movable frame 320 in a vertical direction. A drive motor for the drill bit 310 is located inside the movable frame 320. A drive gear that meshes with the vertical racks is also located inside the movable frame 320. The drive gear is connected to a drive motor to drive the movable frame 320 to reciprocate along the extension direction of the vertical racks. It should be noted that the structure of the drilling device 300 is existing mature technology.

[0033] The specific usage process of the drilling platform for cavern surrounding rock of the present invention is as follows: Two steel arch frames 100 are respectively erected at intervals in the cavern surrounding rock where drilling is required. The walking devices 200 on both sides are respectively installed on the corresponding steel arch frames 100. The walking wheels 220 are engaged in the grooves on both sides of the steel arch frames 100. The positions of the two walking devices 200 on their respective steel arch frames 100 are adjusted so that the two walking devices 200 are staggered by the required angle. Specifically, the staggered angle of the two walking devices 200 can be adjusted according to the required drilling depth, thereby adjusting the suspension height of the positioning platform 400. After the two walking devices 200 are staggered, the two booms 240 are tilted and staggered, which restricts the degree of freedom of the rotating seat 430. The positioning platform 400 can only move synchronously when the two walking devices 200 move simultaneously. Therefore, after the position of the walking devices 200 is determined and cannot move, the stability of the positioning platform 400 can be guaranteed.

[0034] Once the staggered positions of the two traveling devices 200 are determined, the two traveling devices 200 and the positioning platform 400 are moved synchronously to the set drilling positions. After drilling is completed at one position, anchor bolts are installed into the anchor holes. Because the positions of the two traveling devices 200 are staggered, the tension of the traveling devices 200 on the steel arch frame 100 can be decomposed into components in the front-back and left-right directions. Under the same drilling force, the magnitude of the component force in each direction can be reduced, thereby preventing the traveling devices 200 from exerting a large tension on one side of the steel arch frame 100, which would affect the support stability between the steel arch frame 100 and the surrounding rock.

[0035] When the walking devices on both sides are staggered by 200, as Figure 2 As shown, the increased distance between the two booms 240 pulls the two telescopic booms 410 to extend towards both ends. With the cooperation of the positioning gear 420 and the transverse rack 450, the positioning gear 420 rotates around its own axis, ensuring that the drilling device 300 is always centered on the positioning platform 400. Simultaneously, the drilling device 300 remains centered between the two steel arches 100, eliminating the need to consider the distance between the two steel arches 100. Furthermore, when the traveling device 200 adjusts its position, the drill bit 310 of the drilling device 300 always points towards the center of the upper half of the circular section of the steel arch 100, meaning the drill bit 310 is perpendicular to the dome surface of the surrounding rock in the cavern. This meets the requirements for installing anchor bolts, eliminating the need for additional centering or detection devices to determine if the drilling angle has deviated.

[0036] When drilling into the surrounding rock on the side, such as Figure 7 As shown, the second mounting base 230 extends from the first mounting base 210, increasing the support range of the two sets of walking wheels 220 and the steel arch frame 100. Since the two walking devices 200 are on one side when drilling on the side, the pressure on the steel arch frame 100 is too concentrated. The increased support range of the walking device 200 and the steel arch frame 100 can improve the support stability of the walking device 200 and the steel arch frame 100.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drilling platform for tunnel surrounding rock, comprising a drilling device (300), the drilling device (300) comprising a drilling frame (330), a drill bit (310), and a drill bit drive motor for driving the drill bit (310) to rotate, characterized in that, The drilling platform for the surrounding rock of the cavern also includes two arched steel frames (100) arranged at intervals. A positioning platform (400) is provided between the two steel arches (100). The drilling device (300) is installed at the center of the positioning platform (400), and the drill bit (310) is set in a direction perpendicular to the positioning platform (400). The positioning platform (400) is suspended between the two steel arches (100) by a traveling device (200) respectively set on the two steel arches (100). The drilling device (300) is always located at the midpoint between the two steel arches (100) during use. The traveling device (200) includes... A hoisting base is suspended on a steel arch frame (100). The hoisting base can move along the extension direction of the steel arch frame (100) to adjust the position of the positioning platform (400) in the left and right directions. A boom (240) perpendicular to the hoisting base is fixed on the hoisting base. The ends of the two booms (240) away from the hoisting base are respectively hinged to the corresponding ends of the positioning platform (400), and the hinge axis is perpendicular to the boom (240). The positioning platform (400) includes two L-shaped telescopic booms (410). The two telescopic booms (410) are connected end to end. The head end of one telescopic boom (410) is movably inserted into the tail end of the other telescopic boom (410). This allows the two telescopic arms (410) to slide relative to each other when the head end of the telescopic arm (410) is pulled, thus extending the positioning platform (400); the drilling device (300) also includes a positioning sleeve (340), the drilling frame (330) is fixed on the positioning sleeve (340), the two telescopic arms (410) are inserted into the positioning sleeve (340), a positioning gear (420) is provided at the center position between the two telescopic arms (410), the positioning gear (420) is rotatably mounted on the side wall of the positioning sleeve (340), and the opposite side walls of the two telescopic arms (410) respectively have transverse racks (450) that mesh with the positioning gear (420). Each telescopic boom (410) can extend and retract synchronously relative to the positioning gear (420); each telescopic boom (410) has a rotating seat (430) rotatably connected to one end near the corresponding boom (240), and a hinge seat is fixed on the rotating seat (430). The boom (240) and the corresponding hinge seat are connected by a hinge shaft (440), which is perpendicular to the boom (240). In use, by adjusting the position of the two traveling devices (200) on their respective steel arch frames (100), the angle between the boom (240) and the positioning platform (400) is adjusted so that the two traveling devices (200) are staggered in the left and right directions.

2. The drilling platform for cavern surrounding rock according to claim 1, characterized in that, The steel arch frame (100) is formed by bending an I-beam in one piece. The front and rear sides of the hoisting base are respectively provided with traveling wheels (220). The traveling wheels (220) on the front and rear sides are respectively located in the grooves on the front and rear sides of the I-beam and travel along the extension direction of the grooves.

3. The drilling platform for tunnel surrounding rock according to claim 2, characterized in that, The hoisting base is a telescopic structure, including a first mounting base (210) and a second mounting base (230). The second mounting base (230) is slidably installed in the first mounting base (210), and the traveling wheels (220) are installed on the front and rear sides of the second mounting base (230) through wheel frames.

4. The drilling platform for cavern surrounding rock according to claim 3, characterized in that, The front and rear wheel frames are respectively mounted on the second mounting base (230) in the front-rear direction. The second mounting base (230) is equipped with an electric telescopic push rod, which is connected to the wheel frame one by one to drive the front and rear wheel frames to move closer and further apart in the front-rear direction.

5. The drilling platform for tunnel surrounding rock according to claim 1, characterized in that, The drilling frame (330) is a C-shaped sleeve structure. Vertical racks are provided on opposite sides of the inner wall of the drilling frame (330). A movable frame (320) is provided inside the drilling frame (330). The drill bit (310) is rotatably mounted on the movable frame (320) in the vertical direction. The drill bit drive motor is located inside the movable frame (320). A drive gear that meshes with the vertical rack is also provided inside the movable frame (320). The drive gear is connected to the drive motor to drive the movable frame (320) to reciprocate along the extension direction of the vertical rack.

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