Underground blasting drilling device

Abstract

The invention discloses an underground blasting drilling device. The underground blasting drilling device comprises a drilling device body, the drilling device body comprises a rotating rod, a drill bit, a drilling machine and a positioning device, the rotating rod is connected to the drilling machine, the drill bit is fixed to the rotating rod, the rotating rod is arranged in the positioning device in a penetrating mode, the positioning device body comprises a positioning seat, a telescopic driver, a transmission sleeve, a telescopic sleeve and a supporting assembly, and the telescopic driver is installed on the positioning seat; the transmission sleeve is rotatably mounted on the positioning seat, the telescopic sleeve is screwed on the transmission sleeve, the supporting assemblies are uniformly distributed around the drill bit, each supporting assembly comprises a supporting leg, a connecting gear, a mounting part and a reset spring, the supporting legs are slidably arranged on the positioning seat, the connecting gears are rotatably mounted on the mounting parts, and the connecting gears are meshed with the supporting legs; the reset spring is arranged on the telescopic sleeve, the installation piece is arranged on the telescopic sleeve in a sliding mode, and the reset spring is used for resetting the installation piece. According to the underground blasting drilling device, supporting can be formed on the periphery of the drill bit, and the drilling precision is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel and gallery blasting, and particularly relates to an underground blasting drilling device. BACKGROUND

[0002] The engineering field of tunnels or galleries widely adopts blasting technology for tunneling, and the blasting needs to accurately drill blast holes on rock bodies, simultaneously charge the blast holes and block the blast holes. However, when drilling, since the drill bit only has one contact point when contacting the tunnel wall or gallery wall, the drill bit is prone to deviating from the drilling position or being eccentric when initially drilling, resulting in inaccurate blast hole positions and low blast hole precision. SUMMARY

[0003] The present application aims to provide an underground blasting drilling device that forms support around the drill bit to reduce shaking.

[0004] To solve the above problems, the present application provides an underground blasting drilling device, which comprises a drilling device, wherein the drilling device comprises a rotating rod, a drill bit, a drilling machine and a positioning device; the rotating rod is connected to the drilling machine; the drill bit is fixed to the rotating rod; the rotating rod is arranged in the positioning device; the positioning device comprises a positioning seat, an extension drive, a transmission sleeve, an extension sleeve and a support assembly; the extension drive is mounted on the positioning seat; the transmission sleeve is rotatably mounted on the positioning seat; the extension sleeve is screwedly arranged on the transmission sleeve; the support assembly is uniformly distributed around the drill bit; the support assembly comprises a support leg, a connecting gear, a mounting piece and a return spring; the support leg is slidably arranged on the positioning seat; the connecting gear is rotatably mounted on the mounting piece; the connecting gear is engaged with the support leg; the return spring is arranged on the extension sleeve; the mounting piece is slidably arranged on the extension sleeve; and the return spring is used to reset the mounting piece.

[0005] Further, the outer wall of the extension sleeve is provided with a containing groove, and the support leg is located in the containing groove.

[0006] Further, the extension sleeve is provided with a spring mounting groove, the return spring is arranged in the spring mounting groove, the mounting piece has a horizontal section and a vertical section, the horizontal section and the vertical section are connected in an L shape, the connecting gear is mounted on the vertical section, the horizontal section of the mounting piece is located in the mounting groove and abuts against the return spring, the spring mounting groove is provided with an opening in communication with the outside, the opening is used to avoid the vertical section of the mounting piece, and the spring mounting groove is provided with a sealing plug.

[0007] Further, the transmission sleeve has a threaded section and a mounting section, the threaded section is connected with the mounting section, the threaded section is provided with external threads, the extension sleeve is provided with internal threads, and the internal threads are matched with the external threads.

[0008] Further, the diameter of the threaded section is smaller than the diameter of the mounting section.

[0009] Further, the telescopic driver comprises a telescopic power source and an output gear, the telescopic power source is mounted on the positioning seat, the output gear is mounted on the telescopic power source, a transmission gear is arranged on the transmission sleeve, and the transmission gear and the output gear are engaged.

[0010] Further, the telescopic driver comprises a rack and a hydraulic cylinder, the rack is mounted on the output end of the hydraulic cylinder, a transmission gear is arranged on the transmission sleeve, and the rack and the transmission gear are engaged.

[0011] Further, the positioning seat comprises a positioning support plate and a positioning mounting plate, the positioning mounting plate is arranged on the upper end of the positioning support plate, the telescopic driver is mounted on the positioning mounting plate, a mounting hole is arranged on the positioning support plate, the mounting hole is used for mounting the transmission sleeve, and the transmission sleeve is mounted in the mounting hole through a bearing.

[0012] Further, a rotatable sliding sleeve is arranged in the transmission sleeve.

[0013] Further, a mechanical arm and a walking device are further included, the mechanical arm is mounted on the walking device, and the positioning seat is mounted on the mechanical arm.

[0014] The underground blasting drilling device utilizes the support assembly, the support feet of the support assembly can adapt to the uneven tunnel wall or roadway wall, each support foot can abut against the tunnel wall or roadway wall, finally, support is formed around the drilling hole, the drill bit is prevented from deviating, the vibration amplitude of the drill bit is reduced when drilling, and the drilling precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a preferred embodiment of the underground blasting drilling device.

[0016] Figure 2 is a structural schematic diagram of the drilling device.

[0017] Figure 3 is a structural schematic diagram of the positioning device.

[0018] Figure 4 is a sectional view of the positioning device.

[0019] Figure 5 is a structural schematic diagram of the support assembly.

[0020] The meanings of various reference numerals in the drawings are as follows: Walking device 1, mechanical arm 2, drilling device 3, rotating rod 31, drill bit 32, drill machine 33, positioning device 34, positioning seat 341, positioning support plate 3411, positioning mounting plate 3412, guide slide rail 3413, telescopic drive 342, telescopic power source 3421, output gear 3422, transmission sleeve 343, threaded section 3431, mounting section 3432, telescopic sleeve 344, spring mounting groove 3441, sealing plug 3442, support assembly 345, support foot 3451, connecting gear 3452, mounting piece 3453, return spring 3455, transmission gear 346, sliding sleeve 347. DETAILED DESCRIPTION

[0021] The application will be further described below with reference to the drawings.

[0022] As shown in Figure 1 , a preferred embodiment of the underground blasting drilling device 3 of the application comprises a walking device 1, a multi-dimensional mechanical arm 2 and a drilling device 3, the drilling device 3 is used for drilling blast holes in a tunnel or a roadway, and the drilling device 3 is installed on the mechanical arm 2. The walking device 1 is used to drive the mechanical arm 2 and the drilling device 3 to move, so as to facilitate drilling at different positions; the walking device 1 usually adopts a tracked vehicle, which can adapt to different terrains.

[0023] As shown in Figure 2 , the drilling device 3 comprises a rotating rod 31, a drill bit 32, a drill machine 33 and a positioning device 34. The rotating rod 31 is connected to the drill machine 33, the drill bit 32 is fixed on the rotating rod 31, the rotating rod 31 is arranged in the positioning device 34, the positioning device 34 is installed on the mechanical arm 2, and the positioning device 34 is used to position the drill bit 32 to prevent the drill bit 32 from shaking. Before drilling blast holes, the positioning device 34 is started, the positioning device 34 is in contact with the tunnel wall or the roadway wall to form a support around the drill bit 32, which reduces the shaking of the mechanical arm 2 and further reduces the shaking of the drill bit 32, thereby improving the accuracy of the blast hole.

[0024] As shown in Figure 3 and Figure 4As shown, the positioning device 34 comprises a positioning seat 341, a telescopic driver 342, a transmission sleeve 343, a telescopic sleeve 344 and a support assembly 345. The positioning seat 341 is mounted on the mechanical arm 2, the telescopic driver 342 is mounted on the positioning seat 341, the outer side of the transmission sleeve 343 is provided with a bearing and is rotatably mounted on the positioning seat 341, and the telescopic driver 342 is used to drive the transmission sleeve 343 to rotate. The telescopic sleeve 344 is screwed on the transmission sleeve 343, and the transmission sleeve 343 is used to drive the telescopic sleeve 344. The support assembly 345 is mounted on the telescopic sleeve 344 and is slidably arranged on the positioning seat 341, and there are three support assemblies 345 which are uniformly distributed around the telescopic sleeve 344. In other embodiments, two support assemblies 345 or more support assemblies 345 can also be provided according to requirements. The inner cavity of the transmission sleeve 343 is also provided with a sliding sleeve 347 which is mounted in the transmission sleeve 343 through a bearing, so as to avoid the rotation of the telescopic sleeve 344 during the rotation of the drill rod and to avoid the wear of the transmission sleeve 343 on the drill rod. The telescopic driver 342 drives the transmission sleeve 343 to rotate, the transmission sleeve 343 drives the telescopic sleeve 344, the telescopic sleeve 344 moves along the axial direction of the transmission sleeve 343 under the limitation of the support assembly 345, the telescopic sleeve 344 drives the support assembly 345 to move until the support assembly 345 abuts against the tunnel wall or the roadway wall. In other embodiments, a housing can also be provided on the positioning seat 341 to reduce the entry of dust into the components.

[0025] As Figure 5As shown, each of the support assemblies 345 comprises a support leg 3451, a connecting gear 3452, a mounting member 3453 and a reset spring 3455, the support leg 3451 is slidingly arranged on the positioning seat 341, the support leg 3451 is two, the connecting gear 3452 is rotatably arranged on the mounting member 3453, the connecting gear 3452 is located between the two support legs 3451, and the connecting gear 3452 is engaged with the support leg 3451. Specifically, the reset spring 3455 is arranged on the telescopic sleeve 344, the mounting member 3453 is slidingly arranged on the telescopic sleeve 344, the connecting gear 3452 is rotatably arranged on the mounting member 3453, and the reset spring 3455 is used to reset the mounting member 3453; the two sides of each support leg 3451 are provided with tooth portions, so that the left and right of the support leg 3451 can not be distinguished when the support leg 3451 is installed, and the connecting gear 3452 is engaged with the tooth portions. Of course, in other embodiments, the support leg 3451 can also be provided with a tooth portion only on one side of the support leg 3451 close to the connecting gear 3452. When one of the support legs 3451 is in contact with the tunnel wall or the roadway wall, the support leg 3451 limited by the tunnel wall or the roadway wall stops moving, because the front end of the support leg 3451 not limited has no resistance, and the mounting member 3453 has the resistance of the reset spring 3455, so that the connecting gear 3452 rolls on the support leg 3451 limited, and moves with the telescopic sleeve 344, and the support leg 3451 not limited continues to move under the drive of the connecting gear 3452, until the two support legs 3451 are in contact with the tunnel wall or the roadway wall. When the two support legs 3451 of one group are in contact with the tunnel wall or the roadway wall, and the support leg 3451 of the other group is not in contact with the tunnel wall or the roadway wall, the two support legs 3451 of the contact group are limited, so that the mounting member 3453 in the support assembly 345 limited compresses the reset spring 3455, to ensure that the telescopic sleeve 344 can continue to move, until all the support legs 3451 are in contact with the tunnel wall or the roadway wall. Because the support leg 3451 can extend different lengths under the action of the connecting gear 3452, the support leg 3451 can adapt to the uneven tunnel wall or roadway wall, so that each support leg 3451 can bear on the tunnel wall or the roadway wall, so that the drill bit 32 can not shake during drilling, and the situation that the drill bit 32 shakes due to the support leg 3451 missing and unable to form support can be avoided. Because the support leg 3451 is distributed in a ring shape, the connecting gear 3452 is usually a conical gear, which can better engage with the tooth portions on the support leg 3451.

[0026] The outer wall of the telescopic sleeve 344 is provided with a receiving groove, and the supporting leg 3451 is located in the receiving groove, so that the supporting leg 3451 can limit the telescopic sleeve 344 and prevent the telescopic sleeve 344 from rotating. The telescopic sleeve 344 is provided with a spring mounting groove 3441, and the reset spring 3455 is arranged in the spring mounting groove 3441. The mounting piece 3453 has a horizontal section and a vertical section, and the horizontal section and the vertical section are connected in an L shape. The connecting gear 3452 is mounted on the vertical section, and the horizontal section of the mounting piece 3453 is located in the mounting groove and abuts against the reset spring 3455. The spring mounting groove 3441 is provided with an opening communicating with the outside, which is used to avoid the vertical section of the mounting piece 3453. The spring mounting groove 3441 is provided with a sealing plug 3442, which is screwed in the spring mounting groove 3441. The sealing plug 3442 is used to prevent the mounting piece 3453 from falling out of the spring mounting groove 3441.

[0027] The transmission sleeve 343 has a threaded section 3431 and a mounting section 3432, and the threaded section 3431 is connected with the mounting section 3432. The threaded section 3431 is provided with external threads, and the telescopic sleeve 344 is provided with internal threads. The internal threads and the external threads are matched to drive the telescopic sleeve 344 by the transmission sleeve 343. The diameter of the threaded section 3431 is smaller than the diameter of the mounting section 3432, so that the bearing can be conveniently mounted on the mounting section 3432, and the transmission sleeve 343 can be conveniently mounted in the mounting hole of the positioning seat 341.

[0028] The telescopic drive 342 includes a telescopic power source 3421 and an output gear 3422. The telescopic power source 3421 is mounted on the positioning seat 341, and the output gear 3422 is mounted on the telescopic power source 3421. The telescopic power source 3421 is an electric motor or a hydraulic motor. The transmission sleeve 343 is provided with a transmission gear 346, which is arranged on the mounting section 3432 of the transmission sleeve 343. The transmission gear 346 is usually fixed on the mounting section 3432 by welding, so as to stably fix the transmission gear 346 on the transmission sleeve 343. In other embodiments, the transmission sleeve 343 and the transmission gear 346 are integrally formed, so as to reduce the assembly steps. The transmission gear 346 and the output gear 3422 are engaged, so that the telescopic drive 342 drives the transmission sleeve 343 to rotate.

[0029] In another embodiment, the telescopic drive 342 can also be a rack and a hydraulic cylinder. The rack is mounted on the output end of the hydraulic cylinder, and the rack is engaged with the transmission gear 346. The hydraulic cylinder drives the rack to move, so as to drive the output gear 3422 to rotate, and then drive the telescopic sleeve 344 to rotate.

[0030] The positioning seat 341 comprises a positioning support plate 3411 and a positioning mounting plate 3412, the positioning support plate 3411 is mounted on the mechanical arm 2, the positioning mounting plate 3412 is arranged on the upper end of the positioning support plate 3411, the telescopic power source 3421 is mounted on the positioning mounting plate 3412, the positioning mounting plate 3412 and the positioning support plate 3411 enclose an installation space, and the output gear 3422 is located in the installation space. The positioning mounting plate 3412 is detachably mounted on the positioning support plate 3411, so that the output gear 3422 can be mounted on the output end of the telescopic power source 3421, and then the positioning mounting plate 3412 is mounted, thereby facilitating mounting of the telescopic drive 342 on the positioning seat 341. The positioning support plate 3411 is provided with a mounting hole, and the mounting hole is used for mounting the transmission sleeve 343. The transmission sleeve 343 is mounted in the mounting hole through a bearing.

[0031] The positioning support plate 3411 of the positioning seat 341 is provided with six guide sliding rails 3413, each of the guide sliding rails 3413 is provided with a support foot 3451, and the guide sliding rails 3413 are uniformly distributed around the mounting hole, so that the support foot 3451 can stably move along the axial direction of the telescopic sleeve 344. The cross section of the guide sliding rail 3413 is in the shape of a Chinese character “”, and the support foot 3451 is provided with a Chinese character “” shaped groove, so that the support foot 3451 cannot fall off the guide sliding rail 3413.

[0032] Before drilling, when the telescopic power source 3421 drives the output gear 3422 to rotate, the output gear 3422 drives the transmission gear 346 to rotate, the transmission gear 346 drives the transmission sleeve 343 to rotate, and the transmission sleeve 343 drives the support foot 3451 to move towards the tunnel wall or the roadway wall. When one of the support feet 3451 in the support assembly 345 abuts against the tunnel wall or the roadway wall, the support foot 3451 abutting against the tunnel wall or the roadway wall stops moving, and the corresponding connecting gear 3452 rolls on the limited support foot 3451. Another support foot 3451 of the support assembly 345 continues to move under the drive of the connecting gear 3452, until all the support feet 3451 abut against the tunnel wall or the roadway wall, and positioning is completed. After the positioning is completed, the drilling machine 33 is started to drive the drill rod and the drill bit to drill a blast hole. During drilling, the support foot 3451 can adapt to the uneven tunnel wall or roadway wall, so that each support foot 3451 abuts against the tunnel wall or the roadway wall, so that the support foot 3451 forms a support around the drill hole, reduces the vibration amplitude of the drill bit 32 during drilling, and improves the drilling precision.

[0033] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure made according to the content of the present application specification and drawings, directly or indirectly applied in other related technical fields, are also within the patent protection scope of the present application.

Claims

1. An underground blasting drilling device, characterized in that: The system includes a drilling device comprising a rotating rod, a drill bit, a drilling rig, and a positioning device. The rotating rod is connected to the drilling rig, and the drill bit is fixed to the rotating rod. The rotating rod passes through the positioning device, which includes a positioning seat, a telescopic actuator, a transmission sleeve, a telescopic sleeve, and a support assembly. The telescopic actuator is mounted on the positioning seat, the transmission sleeve is rotatably mounted on the positioning seat, and the telescopic sleeve is screwed onto the transmission sleeve. The support assembly is evenly distributed around the drill bit and includes a support foot, a connecting gear, a mounting component, and a return spring. The support foot is slidably mounted on the positioning seat, the connecting gear is rotatably mounted on the mounting component and meshes with the support foot, and the return spring is mounted on the telescopic sleeve. The mounting component is slidably mounted on the telescopic sleeve, and the return spring is used to reset the mounting component.

2. The underground blasting drilling device as described in claim 1, characterized in that: The outer wall of the telescopic sleeve is provided with a receiving groove, and the support foot is located in the receiving groove.

3. The underground blasting drilling device as described in claim 1, characterized in that: The telescopic sleeve is provided with a spring mounting groove, and the return spring is located in the spring mounting groove. The mounting component has a horizontal section and a vertical section, and the horizontal section and the vertical section are connected in an L-shape. The connecting gear is mounted on the vertical section. The horizontal section of the mounting component is located in the mounting groove and abuts against the return spring. The spring mounting groove is provided with an opening that communicates with the outside. This opening is used to avoid the vertical section of the mounting component. The spring mounting groove is provided with a sealing plug.

4. The underground blasting drilling device as described in claim 1, characterized in that: The transmission sleeve has a threaded section and an installation section. The threaded section is connected to the installation section. The threaded section is provided with an external thread. The telescopic sleeve is provided with an internal thread. The internal thread and the external thread cooperate with each other.

5. The underground blasting drilling device as described in claim 4, characterized in that: The diameter of the threaded section is smaller than the diameter of the mounting section.

6. The underground blasting drilling device as described in claim 1, characterized in that: The telescopic actuator includes a telescopic power source and an output gear. The telescopic power source is mounted on a positioning seat, and the output gear is mounted on the telescopic power source. A transmission gear is provided on the transmission sleeve, and the transmission gear meshes with the output gear.

7. The underground blasting drilling device as described in claim 1, characterized in that: The telescopic actuator includes a rack and a hydraulic cylinder. The rack is mounted on the output end of the hydraulic cylinder, and a transmission gear is provided on the transmission sleeve. The rack meshes with the transmission gear.

8. The underground blasting drilling device as described in claim 1, characterized in that: The positioning seat includes a positioning support plate and a positioning mounting plate. The positioning mounting plate is located at the upper end of the positioning support plate. The telescopic driver is mounted on the positioning mounting plate. The positioning support plate is provided with a mounting hole for mounting the transmission sleeve. The transmission sleeve is mounted in the mounting hole through a bearing.

9. The underground blasting drilling device as described in claim 1, characterized in that: The transmission sleeve is equipped with a rotatable sliding sleeve.

10. The underground blasting drilling device as described in claim 1, characterized in that: It also includes a robotic arm and a walking device, wherein the robotic arm is mounted on the walking device and the positioning seat is mounted on the robotic arm.

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